diff options
Diffstat (limited to 'arch')
64 files changed, 1013 insertions, 1424 deletions
diff --git a/arch/arc/include/asm/arcregs.h b/arch/arc/include/asm/arcregs.h index 355cb470c2a4..372466b371bf 100644 --- a/arch/arc/include/asm/arcregs.h +++ b/arch/arc/include/asm/arcregs.h @@ -296,7 +296,7 @@ struct cpuinfo_arc_mmu { }; struct cpuinfo_arc_cache { - unsigned int sz, line_len, assoc, ver; + unsigned int sz_k:8, line_len:8, assoc:4, ver:4, alias:1, vipt:1, pad:6; }; struct cpuinfo_arc_ccm { diff --git a/arch/arc/include/asm/irq.h b/arch/arc/include/asm/irq.h index fb4efb648971..f38652fb2ed7 100644 --- a/arch/arc/include/asm/irq.h +++ b/arch/arc/include/asm/irq.h @@ -16,9 +16,13 @@ #define TIMER0_IRQ 3 #define TIMER1_IRQ 4 +#include <linux/interrupt.h> #include <asm-generic/irq.h> extern void arc_init_IRQ(void); void arc_local_timer_setup(void); +void arc_request_percpu_irq(int irq, int cpu, + irqreturn_t (*isr)(int irq, void *dev), + const char *irq_nm, void *percpu_dev); #endif diff --git a/arch/arc/include/asm/irqflags.h b/arch/arc/include/asm/irqflags.h index cb7efc29f16f..587df8236e8b 100644 --- a/arch/arc/include/asm/irqflags.h +++ b/arch/arc/include/asm/irqflags.h @@ -131,24 +131,6 @@ static inline int arch_irqs_disabled(void) return arch_irqs_disabled_flags(arch_local_save_flags()); } -static inline void arch_mask_irq(unsigned int irq) -{ - unsigned int ienb; - - ienb = read_aux_reg(AUX_IENABLE); - ienb &= ~(1 << irq); - write_aux_reg(AUX_IENABLE, ienb); -} - -static inline void arch_unmask_irq(unsigned int irq) -{ - unsigned int ienb; - - ienb = read_aux_reg(AUX_IENABLE); - ienb |= (1 << irq); - write_aux_reg(AUX_IENABLE, ienb); -} - #else #ifdef CONFIG_TRACE_IRQFLAGS diff --git a/arch/arc/kernel/irq.c b/arch/arc/kernel/irq.c index 7d653c0d0773..620ec2fe32a9 100644 --- a/arch/arc/kernel/irq.c +++ b/arch/arc/kernel/irq.c @@ -19,21 +19,16 @@ /* * Early Hardware specific Interrupt setup + * -Platform independent, needed for each CPU (not foldable into init_IRQ) * -Called very early (start_kernel -> setup_arch -> setup_processor) - * -Platform Independent (must for any ARC700) - * -Needed for each CPU (hence not foldable into init_IRQ) * * what it does ? - * -Disable all IRQs (on CPU side) * -Optionally, setup the High priority Interrupts as Level 2 IRQs */ void arc_init_IRQ(void) { int level_mask = 0; - /* Disable all IRQs: enable them as devices request */ - write_aux_reg(AUX_IENABLE, 0); - /* setup any high priority Interrupts (Level2 in ARCompact jargon) */ level_mask |= IS_ENABLED(CONFIG_ARC_IRQ3_LV2) << 3; level_mask |= IS_ENABLED(CONFIG_ARC_IRQ5_LV2) << 5; @@ -60,20 +55,28 @@ void arc_init_IRQ(void) * below, per IRQ. */ -static void arc_mask_irq(struct irq_data *data) +static void arc_irq_mask(struct irq_data *data) { - arch_mask_irq(data->irq); + unsigned int ienb; + + ienb = read_aux_reg(AUX_IENABLE); + ienb &= ~(1 << data->irq); + write_aux_reg(AUX_IENABLE, ienb); } -static void arc_unmask_irq(struct irq_data *data) +static void arc_irq_unmask(struct irq_data *data) { - arch_unmask_irq(data->irq); + unsigned int ienb; + + ienb = read_aux_reg(AUX_IENABLE); + ienb |= (1 << data->irq); + write_aux_reg(AUX_IENABLE, ienb); } static struct irq_chip onchip_intc = { .name = "ARC In-core Intc", - .irq_mask = arc_mask_irq, - .irq_unmask = arc_unmask_irq, + .irq_mask = arc_irq_mask, + .irq_unmask = arc_irq_unmask, }; static int arc_intc_domain_map(struct irq_domain *d, unsigned int irq, @@ -150,6 +153,32 @@ void arch_do_IRQ(unsigned int irq, struct pt_regs *regs) set_irq_regs(old_regs); } +void arc_request_percpu_irq(int irq, int cpu, + irqreturn_t (*isr)(int irq, void *dev), + const char *irq_nm, + void *percpu_dev) +{ + /* Boot cpu calls request, all call enable */ + if (!cpu) { + int rc; + + /* + * These 2 calls are essential to making percpu IRQ APIs work + * Ideally these details could be hidden in irq chip map function + * but the issue is IPIs IRQs being static (non-DT) and platform + * specific, so we can't identify them there. + */ + irq_set_percpu_devid(irq); + irq_modify_status(irq, IRQ_NOAUTOEN, 0); /* @irq, @clr, @set */ + + rc = request_percpu_irq(irq, isr, irq_nm, percpu_dev); + if (rc) + panic("Percpu IRQ request failed for %d\n", irq); + } + + enable_percpu_irq(irq, 0); +} + /* * arch_local_irq_enable - Enable interrupts. * diff --git a/arch/arc/kernel/signal.c b/arch/arc/kernel/signal.c index 7e95e1a86510..cb3142a2d40b 100644 --- a/arch/arc/kernel/signal.c +++ b/arch/arc/kernel/signal.c @@ -141,17 +141,13 @@ badframe: /* * Determine which stack to use.. */ -static inline void __user *get_sigframe(struct k_sigaction *ka, +static inline void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs, unsigned long framesize) { - unsigned long sp = regs->sp; + unsigned long sp = sigsp(regs->sp, ksig); void __user *frame; - /* This is the X/Open sanctioned signal stack switching */ - if ((ka->sa.sa_flags & SA_ONSTACK) && !sas_ss_flags(sp)) - sp = current->sas_ss_sp + current->sas_ss_size; - /* No matter what happens, 'sp' must be word * aligned otherwise nasty things could happen */ @@ -179,14 +175,13 @@ static inline int map_sig(int sig) } static int -setup_rt_frame(int signo, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs) { struct rt_sigframe __user *sf; unsigned int magic = 0; int err = 0; - sf = get_sigframe(ka, regs, sizeof(struct rt_sigframe)); + sf = get_sigframe(ksig, regs, sizeof(struct rt_sigframe)); if (!sf) return 1; @@ -205,8 +200,8 @@ setup_rt_frame(int signo, struct k_sigaction *ka, siginfo_t *info, * #2: struct siginfo * #3: struct ucontext (completely populated) */ - if (unlikely(ka->sa.sa_flags & SA_SIGINFO)) { - err |= copy_siginfo_to_user(&sf->info, info); + if (unlikely(ksig->ka.sa.sa_flags & SA_SIGINFO)) { + err |= copy_siginfo_to_user(&sf->info, &ksig->info); err |= __put_user(0, &sf->uc.uc_flags); err |= __put_user(NULL, &sf->uc.uc_link); err |= __save_altstack(&sf->uc.uc_stack, regs->sp); @@ -227,16 +222,16 @@ setup_rt_frame(int signo, struct k_sigaction *ka, siginfo_t *info, return err; /* #1 arg to the user Signal handler */ - regs->r0 = map_sig(signo); + regs->r0 = map_sig(ksig->sig); /* setup PC of user space signal handler */ - regs->ret = (unsigned long)ka->sa.sa_handler; + regs->ret = (unsigned long)ksig->ka.sa.sa_handler; /* * handler returns using sigreturn stub provided already by userpsace */ - BUG_ON(!(ka->sa.sa_flags & SA_RESTORER)); - regs->blink = (unsigned long)ka->sa.sa_restorer; + BUG_ON(!(ksig->ka.sa.sa_flags & SA_RESTORER)); + regs->blink = (unsigned long)ksig->ka.sa.sa_restorer; /* User Stack for signal handler will be above the frame just carved */ regs->sp = (unsigned long)sf; @@ -298,38 +293,30 @@ static void arc_restart_syscall(struct k_sigaction *ka, struct pt_regs *regs) * OK, we're invoking a handler */ static void -handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, - struct pt_regs *regs) +handle_signal(struct ksignal *ksig, struct pt_regs *regs) { sigset_t *oldset = sigmask_to_save(); int ret; /* Set up the stack frame */ - ret = setup_rt_frame(sig, ka, info, oldset, regs); + ret = setup_rt_frame(ksig, oldset, regs); - if (ret) - force_sigsegv(sig, current); - else - signal_delivered(sig, info, ka, regs, 0); + signal_setup_done(ret, ksig, 0); } void do_signal(struct pt_regs *regs) { - struct k_sigaction ka; - siginfo_t info; - int signr; + struct ksignal ksig; int restart_scall; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - restart_scall = in_syscall(regs) && syscall_restartable(regs); - if (signr > 0) { + if (get_signal(&ksig)) { if (restart_scall) { - arc_restart_syscall(&ka, regs); + arc_restart_syscall(&ksig.ka, regs); syscall_wont_restart(regs); /* No more restarts */ } - handle_signal(signr, &ka, &info, regs); + handle_signal(&ksig, regs); return; } diff --git a/arch/arc/kernel/smp.c b/arch/arc/kernel/smp.c index c802bb500602..dcd317c47d09 100644 --- a/arch/arc/kernel/smp.c +++ b/arch/arc/kernel/smp.c @@ -12,23 +12,15 @@ * -- Initial Write (Borrowed heavily from ARM) */ -#include <linux/module.h> -#include <linux/init.h> #include <linux/spinlock.h> #include <linux/sched.h> #include <linux/interrupt.h> #include <linux/profile.h> -#include <linux/errno.h> -#include <linux/err.h> #include <linux/mm.h> #include <linux/cpu.h> -#include <linux/smp.h> #include <linux/irq.h> -#include <linux/delay.h> #include <linux/atomic.h> -#include <linux/percpu.h> #include <linux/cpumask.h> -#include <linux/spinlock_types.h> #include <linux/reboot.h> #include <asm/processor.h> #include <asm/setup.h> @@ -136,7 +128,7 @@ void start_kernel_secondary(void) pr_info("## CPU%u LIVE ##: Executing Code...\n", cpu); if (machine_desc->init_smp) - machine_desc->init_smp(smp_processor_id()); + machine_desc->init_smp(cpu); arc_local_timer_setup(); @@ -338,18 +330,11 @@ irqreturn_t do_IPI(int irq, void *dev_id) */ static DEFINE_PER_CPU(int, ipi_dev); -static struct irqaction arc_ipi_irq = { - .name = "IPI Interrupt", - .flags = IRQF_PERCPU, - .handler = do_IPI, -}; - int smp_ipi_irq_setup(int cpu, int irq) { - if (!cpu) - return setup_irq(irq, &arc_ipi_irq); - else - arch_unmask_irq(irq); + int *dev = per_cpu_ptr(&ipi_dev, cpu); + + arc_request_percpu_irq(irq, cpu, do_IPI, "IPI Interrupt", dev); return 0; } diff --git a/arch/arc/kernel/time.c b/arch/arc/kernel/time.c index 36c2aa99436f..dbe74f418019 100644 --- a/arch/arc/kernel/time.c +++ b/arch/arc/kernel/time.c @@ -144,12 +144,12 @@ static struct clocksource arc_counter = { /********** Clock Event Device *********/ /* - * Arm the timer to interrupt after @limit cycles + * Arm the timer to interrupt after @cycles * The distinction for oneshot/periodic is done in arc_event_timer_ack() below */ -static void arc_timer_event_setup(unsigned int limit) +static void arc_timer_event_setup(unsigned int cycles) { - write_aux_reg(ARC_REG_TIMER0_LIMIT, limit); + write_aux_reg(ARC_REG_TIMER0_LIMIT, cycles); write_aux_reg(ARC_REG_TIMER0_CNT, 0); /* start from 0 */ write_aux_reg(ARC_REG_TIMER0_CTRL, TIMER_CTRL_IE | TIMER_CTRL_NH); @@ -168,6 +168,10 @@ static void arc_clkevent_set_mode(enum clock_event_mode mode, { switch (mode) { case CLOCK_EVT_MODE_PERIODIC: + /* + * At X Hz, 1 sec = 1000ms -> X cycles; + * 10ms -> X / 100 cycles + */ arc_timer_event_setup(arc_get_core_freq() / HZ); break; case CLOCK_EVT_MODE_ONESHOT: @@ -210,12 +214,6 @@ static irqreturn_t timer_irq_handler(int irq, void *dev_id) return IRQ_HANDLED; } -static struct irqaction arc_timer_irq = { - .name = "Timer0 (clock-evt-dev)", - .flags = IRQF_TIMER | IRQF_PERCPU, - .handler = timer_irq_handler, -}; - /* * Setup the local event timer for @cpu */ @@ -228,15 +226,9 @@ void arc_local_timer_setup() clockevents_config_and_register(evt, arc_get_core_freq(), 0, ARC_TIMER_MAX); - /* - * setup the per-cpu timer IRQ handler - for all cpus - * For non boot CPU explicitly unmask at intc - * setup_irq() -> .. -> irq_startup() already does this on boot-cpu - */ - if (!cpu) - setup_irq(TIMER0_IRQ, &arc_timer_irq); - else - arch_unmask_irq(TIMER0_IRQ); + /* setup the per-cpu timer IRQ handler - for all cpus */ + arc_request_percpu_irq(TIMER0_IRQ, cpu, timer_irq_handler, + "Timer0 (per-cpu-tick)", evt); } /* diff --git a/arch/arc/mm/cache_arc700.c b/arch/arc/mm/cache_arc700.c index 353b202c37c9..4670afc3b971 100644 --- a/arch/arc/mm/cache_arc700.c +++ b/arch/arc/mm/cache_arc700.c @@ -77,21 +77,19 @@ char *arc_cache_mumbojumbo(int c, char *buf, int len) { int n = 0; -#define PR_CACHE(p, enb, str) \ -{ \ +#define PR_CACHE(p, cfg, str) \ if (!(p)->ver) \ n += scnprintf(buf + n, len - n, str"\t\t: N/A\n"); \ else \ n += scnprintf(buf + n, len - n, \ - str"\t\t: (%uK) VIPT, %dway set-asc, %ub Line %s\n", \ - TO_KB((p)->sz), (p)->assoc, (p)->line_len, \ - enb ? "" : "DISABLED (kernel-build)"); \ -} + str"\t\t: %uK, %dway/set, %uB Line, %s%s%s\n", \ + (p)->sz_k, (p)->assoc, (p)->line_len, \ + (p)->vipt ? "VIPT" : "PIPT", \ + (p)->alias ? " aliasing" : "", \ + IS_ENABLED(cfg) ? "" : " (not used)"); - PR_CACHE(&cpuinfo_arc700[c].icache, IS_ENABLED(CONFIG_ARC_HAS_ICACHE), - "I-Cache"); - PR_CACHE(&cpuinfo_arc700[c].dcache, IS_ENABLED(CONFIG_ARC_HAS_DCACHE), - "D-Cache"); + PR_CACHE(&cpuinfo_arc700[c].icache, CONFIG_ARC_HAS_ICACHE, "I-Cache"); + PR_CACHE(&cpuinfo_arc700[c].dcache, CONFIG_ARC_HAS_DCACHE, "D-Cache"); return buf; } @@ -116,20 +114,31 @@ void read_decode_cache_bcr(void) p_ic = &cpuinfo_arc700[cpu].icache; READ_BCR(ARC_REG_IC_BCR, ibcr); + if (!ibcr.ver) + goto dc_chk; + BUG_ON(ibcr.config != 3); p_ic->assoc = 2; /* Fixed to 2w set assoc */ p_ic->line_len = 8 << ibcr.line_len; - p_ic->sz = 0x200 << ibcr.sz; + p_ic->sz_k = 1 << (ibcr.sz - 1); p_ic->ver = ibcr.ver; + p_ic->vipt = 1; + p_ic->alias = p_ic->sz_k/p_ic->assoc/TO_KB(PAGE_SIZE) > 1; +dc_chk: p_dc = &cpuinfo_arc700[cpu].dcache; READ_BCR(ARC_REG_DC_BCR, dbcr); + if (!dbcr.ver) + return; + BUG_ON(dbcr.config != 2); p_dc->assoc = 4; /* Fixed to 4w set assoc */ p_dc->line_len = 16 << dbcr.line_len; - p_dc->sz = 0x200 << dbcr.sz; + p_dc->sz_k = 1 << (dbcr.sz - 1); p_dc->ver = dbcr.ver; + p_dc->vipt = 1; + p_dc->alias = p_dc->sz_k/p_dc->assoc/TO_KB(PAGE_SIZE) > 1; } /* @@ -142,14 +151,16 @@ void read_decode_cache_bcr(void) void arc_cache_init(void) { unsigned int __maybe_unused cpu = smp_processor_id(); - struct cpuinfo_arc_cache __maybe_unused *ic, __maybe_unused *dc; char str[256]; printk(arc_cache_mumbojumbo(0, str, sizeof(str))); -#ifdef CONFIG_ARC_HAS_ICACHE - ic = &cpuinfo_arc700[cpu].icache; - if (ic->ver) { + if (IS_ENABLED(CONFIG_ARC_HAS_ICACHE)) { + struct cpuinfo_arc_cache *ic = &cpuinfo_arc700[cpu].icache; + + if (!ic->ver) + panic("cache support enabled but non-existent cache\n"); + if (ic->line_len != L1_CACHE_BYTES) panic("ICache line [%d] != kernel Config [%d]", ic->line_len, L1_CACHE_BYTES); @@ -158,26 +169,26 @@ void arc_cache_init(void) panic("Cache ver [%d] doesn't match MMU ver [%d]\n", ic->ver, CONFIG_ARC_MMU_VER); } -#endif -#ifdef CONFIG_ARC_HAS_DCACHE - dc = &cpuinfo_arc700[cpu].dcache; - if (dc->ver) { - unsigned int dcache_does_alias; + if (IS_ENABLED(CONFIG_ARC_HAS_DCACHE)) { + struct cpuinfo_arc_cache *dc = &cpuinfo_arc700[cpu].dcache; + int handled; + + if (!dc->ver) + panic("cache support enabled but non-existent cache\n"); if (dc->line_len != L1_CACHE_BYTES) panic("DCache line [%d] != kernel Config [%d]", dc->line_len, L1_CACHE_BYTES); /* check for D-Cache aliasing */ - dcache_does_alias = (dc->sz / dc->assoc) > PAGE_SIZE; + handled = IS_ENABLED(CONFIG_ARC_CACHE_VIPT_ALIASING); - if (dcache_does_alias && !cache_is_vipt_aliasing()) + if (dc->alias && !handled) panic("Enable CONFIG_ARC_CACHE_VIPT_ALIASING\n"); - else if (!dcache_does_alias && cache_is_vipt_aliasing()) + else if (!dc->alias && handled) panic("Don't need CONFIG_ARC_CACHE_VIPT_ALIASING\n"); } -#endif } #define OP_INV 0x1 @@ -255,10 +266,32 @@ static inline void __cache_line_loop(unsigned long paddr, unsigned long vaddr, * Machine specific helpers for Entire D-Cache or Per Line ops */ -static inline void wait_for_flush(void) +static unsigned int __before_dc_op(const int op) +{ + unsigned int reg = reg; + + if (op == OP_FLUSH_N_INV) { + /* Dcache provides 2 cmd: FLUSH or INV + * INV inturn has sub-modes: DISCARD or FLUSH-BEFORE + * flush-n-inv is achieved by INV cmd but with IM=1 + * So toggle INV sub-mode depending on op request and default + */ + reg = read_aux_reg(ARC_REG_DC_CTRL); + write_aux_reg(ARC_REG_DC_CTRL, reg | DC_CTRL_INV_MODE_FLUSH) + ; + } + + return reg; +} + +static void __after_dc_op(const int op, unsigned int reg) { - while (read_aux_reg(ARC_REG_DC_CTRL) & DC_CTRL_FLUSH_STATUS) - ; + if (op & OP_FLUSH) /* flush / flush-n-inv both wait */ + while (read_aux_reg(ARC_REG_DC_CTRL) & DC_CTRL_FLUSH_STATUS); + + /* Switch back to default Invalidate mode */ + if (op == OP_FLUSH_N_INV) + write_aux_reg(ARC_REG_DC_CTRL, reg & ~DC_CTRL_INV_MODE_FLUSH); } /* @@ -269,18 +302,10 @@ static inline void wait_for_flush(void) */ static inline void __dc_entire_op(const int cacheop) { - unsigned int tmp = tmp; + unsigned int ctrl_reg; int aux; - if (cacheop == OP_FLUSH_N_INV) { - /* Dcache provides 2 cmd: FLUSH or INV - * INV inturn has sub-modes: DISCARD or FLUSH-BEFORE - * flush-n-inv is achieved by INV cmd but with IM=1 - * Default INV sub-mode is DISCARD, which needs to be toggled - */ - tmp = read_aux_reg(ARC_REG_DC_CTRL); - write_aux_reg(ARC_REG_DC_CTRL, tmp | DC_CTRL_INV_MODE_FLUSH); - } + ctrl_reg = __before_dc_op(cacheop); if (cacheop & OP_INV) /* Inv or flush-n-inv use same cmd reg */ aux = ARC_REG_DC_IVDC; @@ -289,12 +314,7 @@ static inline void __dc_entire_op(const int cacheop) write_aux_reg(aux, 0x1); - if (cacheop & OP_FLUSH) /* flush / flush-n-inv both wait */ - wait_for_flush(); - - /* Switch back the DISCARD ONLY Invalidate mode */ - if (cacheop == OP_FLUSH_N_INV) - write_aux_reg(ARC_REG_DC_CTRL, tmp & ~DC_CTRL_INV_MODE_FLUSH); + __after_dc_op(cacheop, ctrl_reg); } /* For kernel mappings cache operation: index is same as paddr */ @@ -306,29 +326,16 @@ static inline void __dc_entire_op(const int cacheop) static inline void __dc_line_op(unsigned long paddr, unsigned long vaddr, unsigned long sz, const int cacheop) { - unsigned long flags, tmp = tmp; + unsigned long flags; + unsigned int ctrl_reg; local_irq_save(flags); - if (cacheop == OP_FLUSH_N_INV) { - /* - * Dcache provides 2 cmd: FLUSH or INV - * INV inturn has sub-modes: DISCARD or FLUSH-BEFORE - * flush-n-inv is achieved by INV cmd but with IM=1 - * Default INV sub-mode is DISCARD, which needs to be toggled - */ - tmp = read_aux_reg(ARC_REG_DC_CTRL); - write_aux_reg(ARC_REG_DC_CTRL, tmp | DC_CTRL_INV_MODE_FLUSH); - } + ctrl_reg = __before_dc_op(cacheop); __cache_line_loop(paddr, vaddr, sz, cacheop); - if (cacheop & OP_FLUSH) /* flush / flush-n-inv both wait */ - wait_for_flush(); - - /* Switch back the DISCARD ONLY Invalidate mode */ - if (cacheop == OP_FLUSH_N_INV) - write_aux_reg(ARC_REG_DC_CTRL, tmp & ~DC_CTRL_INV_MODE_FLUSH); + __after_dc_op(cacheop, ctrl_reg); local_irq_restore(flags); } @@ -389,8 +396,16 @@ static inline void __dc_line_op(unsigned long paddr, unsigned long vaddr, /*********************************************************** * Machine specific helper for per line I-Cache invalidate. */ -static void __ic_line_inv_vaddr_local(unsigned long paddr, unsigned long vaddr, - unsigned long sz) + +static inline void __ic_entire_inv(void) +{ + write_aux_reg(ARC_REG_IC_IVIC, 1); + read_aux_reg(ARC_REG_IC_CTRL); /* blocks */ +} + +static inline void +__ic_line_inv_vaddr_local(unsigned long paddr, unsigned long vaddr, + unsigned long sz) { unsigned long flags; @@ -399,30 +414,39 @@ static void __ic_line_inv_vaddr_local(unsigned long paddr, unsigned long vaddr, local_irq_restore(flags); } -static inline void __ic_entire_inv(void) -{ - write_aux_reg(ARC_REG_IC_IVIC, 1); - read_aux_reg(ARC_REG_IC_CTRL); /* blocks */ -} +#ifndef CONFIG_SMP + +#define __ic_line_inv_vaddr(p, v, s) __ic_line_inv_vaddr_local(p, v, s) -struct ic_line_inv_vaddr_ipi { +#else + +struct ic_inv_args { unsigned long paddr, vaddr; int sz; }; static void __ic_line_inv_vaddr_helper(void *info) { - struct ic_line_inv_vaddr_ipi *ic_inv = (struct ic_line_inv_vaddr_ipi*) info; + struct ic_inv *ic_inv_args = (struct ic_inv_args *) info; + __ic_line_inv_vaddr_local(ic_inv->paddr, ic_inv->vaddr, ic_inv->sz); } static void __ic_line_inv_vaddr(unsigned long paddr, unsigned long vaddr, unsigned long sz) { - struct ic_line_inv_vaddr_ipi ic_inv = { paddr, vaddr , sz}; + struct ic_inv_args ic_inv = { + .paddr = paddr, + .vaddr = vaddr, + .sz = sz + }; + on_each_cpu(__ic_line_inv_vaddr_helper, &ic_inv, 1); } -#else + +#endif /* CONFIG_SMP */ + +#else /* !CONFIG_ARC_HAS_ICACHE */ #define __ic_entire_inv() #define __ic_line_inv_vaddr(pstart, vstart, sz) diff --git a/arch/arc/mm/fault.c b/arch/arc/mm/fault.c index 9c69552350c4..6f7e3a68803a 100644 --- a/arch/arc/mm/fault.c +++ b/arch/arc/mm/fault.c @@ -159,7 +159,6 @@ good_area: return; } - /* TBD: switch to pagefault_out_of_memory() */ if (fault & VM_FAULT_OOM) goto out_of_memory; else if (fault & VM_FAULT_SIGBUS) diff --git a/arch/arc/mm/tlbex.S b/arch/arc/mm/tlbex.S index 79bfc81358c9..d572f1c2c724 100644 --- a/arch/arc/mm/tlbex.S +++ b/arch/arc/mm/tlbex.S @@ -220,9 +220,9 @@ ex_saved_reg1: .macro CONV_PTE_TO_TLB and r3, r0, PTE_BITS_RWX ; r w x - lsl r2, r3, 3 ; r w x 0 0 0 + lsl r2, r3, 3 ; r w x 0 0 0 (GLOBAL, kernel only) and.f 0, r0, _PAGE_GLOBAL - or.z r2, r2, r3 ; r w x r w x + or.z r2, r2, r3 ; r w x r w x (!GLOBAL, user page) and r3, r0, PTE_BITS_NON_RWX_IN_PD1 ; Extract PFN+cache bits from PTE or r3, r3, r2 diff --git a/arch/arc/plat-arcfpga/Makefile b/arch/arc/plat-arcfpga/Makefile index 4d1bddc34b5b..66fd0ecd68b3 100644 --- a/arch/arc/plat-arcfpga/Makefile +++ b/arch/arc/plat-arcfpga/Makefile @@ -8,5 +8,5 @@ KBUILD_CFLAGS += -Iarch/arc/plat-arcfpga/include -obj-y := platform.o irq.o +obj-y := platform.o obj-$(CONFIG_ISS_SMP_EXTN) += smp.o diff --git a/arch/arc/plat-arcfpga/include/plat/irq.h b/arch/arc/plat-arcfpga/include/plat/irq.h index 6adbc53c3a5b..2c9dea690ac4 100644 --- a/arch/arc/plat-arcfpga/include/plat/irq.h +++ b/arch/arc/plat-arcfpga/include/plat/irq.h @@ -24,6 +24,4 @@ #define IDU_INTERRUPT_0 16 #endif -extern void __init plat_fpga_init_IRQ(void); - #endif diff --git a/arch/arc/plat-arcfpga/irq.c b/arch/arc/plat-arcfpga/irq.c deleted file mode 100644 index d2215fd889c2..000000000000 --- a/arch/arc/plat-arcfpga/irq.c +++ /dev/null @@ -1,25 +0,0 @@ -/* - * ARC FPGA Platform IRQ hookups - * - * Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/interrupt.h> -#include <plat/irq.h> - -void __init plat_fpga_init_IRQ(void) -{ - /* - * SMP Hack because UART IRQ hardwired to cpu0 (boot-cpu) but if the - * request_irq() comes from any other CPU, the low level IRQ unamsking - * essential for getting Interrupts won't be enabled on cpu0, locking - * up the UART state machine. - */ -#ifdef CONFIG_SMP - arch_unmask_irq(UART0_IRQ); -#endif -} diff --git a/arch/arc/plat-arcfpga/platform.c b/arch/arc/plat-arcfpga/platform.c index b8d0d456627f..1038949a99a1 100644 --- a/arch/arc/plat-arcfpga/platform.c +++ b/arch/arc/plat-arcfpga/platform.c @@ -57,7 +57,6 @@ MACHINE_START(ANGEL4, "angel4") .dt_compat = aa4_compat, .init_early = plat_fpga_early_init, .init_machine = plat_fpga_populate_dev, - .init_irq = plat_fpga_init_IRQ, #ifdef CONFIG_ISS_SMP_EXTN .init_smp = iss_model_init_smp, #endif @@ -72,7 +71,6 @@ MACHINE_START(ML509, "ml509") .dt_compat = ml509_compat, .init_early = plat_fpga_early_init, .init_machine = plat_fpga_populate_dev, - .init_irq = plat_fpga_init_IRQ, #ifdef CONFIG_SMP .init_smp = iss_model_init_smp, #endif @@ -87,5 +85,4 @@ MACHINE_START(NSIMOSCI, "nsimosci") .dt_compat = nsimosci_compat, .init_early = NULL, .init_machine = plat_fpga_populate_dev, - .init_irq = NULL, MACHINE_END diff --git a/arch/arm/include/asm/unistd.h b/arch/arm/include/asm/unistd.h index 21ca0cebcab0..32640c431a08 100644 --- a/arch/arm/include/asm/unistd.h +++ b/arch/arm/include/asm/unistd.h @@ -19,7 +19,7 @@ * This may need to be greater than __NR_last_syscall+1 in order to * account for the padding in the syscall table */ -#define __NR_syscalls (384) +#define __NR_syscalls (388) /* * *NOTE*: This is a ghost syscall private to the kernel. Only the diff --git a/arch/arm/include/uapi/asm/unistd.h b/arch/arm/include/uapi/asm/unistd.h index 767ea204334e..3aaa75cae90c 100644 --- a/arch/arm/include/uapi/asm/unistd.h +++ b/arch/arm/include/uapi/asm/unistd.h @@ -410,6 +410,8 @@ #define __NR_sched_getattr (__NR_SYSCALL_BASE+381) #define __NR_renameat2 (__NR_SYSCALL_BASE+382) #define __NR_seccomp (__NR_SYSCALL_BASE+383) +#define __NR_getrandom (__NR_SYSCALL_BASE+384) +#define __NR_memfd_create (__NR_SYSCALL_BASE+385) /* * The following SWIs are ARM private. diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S index bea85f97f363..9f899d8fdcca 100644 --- a/arch/arm/kernel/calls.S +++ b/arch/arm/kernel/calls.S @@ -393,6 +393,8 @@ CALL(sys_sched_getattr) CALL(sys_renameat2) CALL(sys_seccomp) + CALL(sys_getrandom) +/* 385 */ CALL(sys_memfd_create) #ifndef syscalls_counted .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls #define syscalls_counted diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 7c4fada440f0..9388a3d479e1 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -47,6 +47,9 @@ #include <asm/mach/arch.h> #include <asm/mpu.h> +#define CREATE_TRACE_POINTS +#include <trace/events/ipi.h> + /* * as from 2.5, kernels no longer have an init_tasks structure * so we need some other way of telling a new secondary core @@ -430,38 +433,15 @@ void __init smp_prepare_cpus(unsigned int max_cpus) } } -static void (*smp_cross_call)(const struct cpumask *, unsigned int); +static void (*__smp_cross_call)(const struct cpumask *, unsigned int); void __init set_smp_cross_call(void (*fn)(const struct cpumask *, unsigned int)) { - if (!smp_cross_call) - smp_cross_call = fn; -} - -void arch_send_call_function_ipi_mask(const struct cpumask *mask) -{ - smp_cross_call(mask, IPI_CALL_FUNC); -} - -void arch_send_wakeup_ipi_mask(const struct cpumask *mask) -{ - smp_cross_call(mask, IPI_WAKEUP); -} - -void arch_send_call_function_single_ipi(int cpu) -{ - smp_cross_call(cpumask_of(cpu), IPI_CALL_FUNC_SINGLE); + if (!__smp_cross_call) + __smp_cross_call = fn; } -#ifdef CONFIG_IRQ_WORK -void arch_irq_work_raise(void) -{ - if (is_smp()) - smp_cross_call(cpumask_of(smp_processor_id()), IPI_IRQ_WORK); -} -#endif - -static const char *ipi_types[NR_IPI] = { +static const char *ipi_types[NR_IPI] __tracepoint_string = { #define S(x,s) [x] = s S(IPI_WAKEUP, "CPU wakeup interrupts"), S(IPI_TIMER, "Timer broadcast interrupts"), @@ -473,6 +453,12 @@ static const char *ipi_types[NR_IPI] = { S(IPI_COMPLETION, "completion interrupts"), }; +static void smp_cross_call(const struct cpumask *target, unsigned int ipinr) +{ + trace_ipi_raise(target, ipi_types[ipinr]); + __smp_cross_call(target, ipinr); +} + void show_ipi_list(struct seq_file *p, int prec) { unsigned int cpu, i; @@ -499,6 +485,29 @@ u64 smp_irq_stat_cpu(unsigned int cpu) return sum; } +void arch_send_call_function_ipi_mask(const struct cpumask *mask) +{ + smp_cross_call(mask, IPI_CALL_FUNC); +} + +void arch_send_wakeup_ipi_mask(const struct cpumask *mask) +{ + smp_cross_call(mask, IPI_WAKEUP); +} + +void arch_send_call_function_single_ipi(int cpu) +{ + smp_cross_call(cpumask_of(cpu), IPI_CALL_FUNC_SINGLE); +} + +#ifdef CONFIG_IRQ_WORK +void arch_irq_work_raise(void) +{ + if (is_smp()) + smp_cross_call(cpumask_of(smp_processor_id()), IPI_IRQ_WORK); +} +#endif + #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST void tick_broadcast(const struct cpumask *mask) { @@ -556,8 +565,10 @@ void handle_IPI(int ipinr, struct pt_regs *regs) unsigned int cpu = smp_processor_id(); struct pt_regs *old_regs = set_irq_regs(regs); - if (ipinr < NR_IPI) + if ((unsigned)ipinr < NR_IPI) { + trace_ipi_entry(ipi_types[ipinr]); __inc_irq_stat(cpu, ipi_irqs[ipinr]); + } switch (ipinr) { case IPI_WAKEUP: @@ -612,6 +623,9 @@ void handle_IPI(int ipinr, struct pt_regs *regs) cpu, ipinr); break; } + + if ((unsigned)ipinr < NR_IPI) + trace_ipi_exit(ipi_types[ipinr]); set_irq_regs(old_regs); } diff --git a/arch/arm/mm/proc-v7-3level.S b/arch/arm/mm/proc-v7-3level.S index e4c8acfc1323..1a24e9232ec8 100644 --- a/arch/arm/mm/proc-v7-3level.S +++ b/arch/arm/mm/proc-v7-3level.S @@ -146,12 +146,11 @@ ENDPROC(cpu_v7_set_pte_ext) mov \tmp, \ttbr1, lsr #(32 - ARCH_PGD_SHIFT) @ upper bits mov \ttbr1, \ttbr1, lsl #ARCH_PGD_SHIFT @ lower bits addls \ttbr1, \ttbr1, #TTBR1_OFFSET - mcrr p15, 1, \ttbr1, \zero, c2 @ load TTBR1 + adcls \tmp, \tmp, #0 + mcrr p15, 1, \ttbr1, \tmp, c2 @ load TTBR1 mov \tmp, \ttbr0, lsr #(32 - ARCH_PGD_SHIFT) @ upper bits mov \ttbr0, \ttbr0, lsl #ARCH_PGD_SHIFT @ lower bits - mcrr p15, 0, \ttbr0, \zero, c2 @ load TTBR0 - mcrr p15, 1, \ttbr1, \zero, c2 @ load TTBR1 - mcrr p15, 0, \ttbr0, \zero, c2 @ load TTBR0 + mcrr p15, 0, \ttbr0, \tmp, c2 @ load TTBR0 .endm /* diff --git a/arch/arm64/include/asm/signal32.h b/arch/arm64/include/asm/signal32.h index 7c275e3b640f..eeaa97559bab 100644 --- a/arch/arm64/include/asm/signal32.h +++ b/arch/arm64/include/asm/signal32.h @@ -24,22 +24,21 @@ extern const compat_ulong_t aarch32_sigret_code[6]; -int compat_setup_frame(int usig, struct k_sigaction *ka, sigset_t *set, +int compat_setup_frame(int usig, struct ksignal *ksig, sigset_t *set, struct pt_regs *regs); -int compat_setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs); +int compat_setup_rt_frame(int usig, struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs); void compat_setup_restart_syscall(struct pt_regs *regs); #else -static inline int compat_setup_frame(int usid, struct k_sigaction *ka, +static inline int compat_setup_frame(int usid, struct ksignal *ksig, sigset_t *set, struct pt_regs *regs) { return -ENOSYS; } -static inline int compat_setup_rt_frame(int usig, struct k_sigaction *ka, - siginfo_t *info, sigset_t *set, +static inline int compat_setup_rt_frame(int usig, struct ksignal *ksig, sigset_t *set, struct pt_regs *regs) { return -ENOSYS; diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c index 6357b9c6c90e..6fa792137eda 100644 --- a/arch/arm64/kernel/signal.c +++ b/arch/arm64/kernel/signal.c @@ -209,19 +209,13 @@ static int setup_sigframe(struct rt_sigframe __user *sf, return err; } -static struct rt_sigframe __user *get_sigframe(struct k_sigaction *ka, +static struct rt_sigframe __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs) { unsigned long sp, sp_top; struct rt_sigframe __user *frame; - sp = sp_top = regs->sp; - - /* - * This is the X/Open sanctioned signal stack switching. - */ - if ((ka->sa.sa_flags & SA_ONSTACK) && !sas_ss_flags(sp)) - sp = sp_top = current->sas_ss_sp + current->sas_ss_size; + sp = sp_top = sigsp(regs->sp, ksig); sp = (sp - sizeof(struct rt_sigframe)) & ~15; frame = (struct rt_sigframe __user *)sp; @@ -253,13 +247,13 @@ static void setup_return(struct pt_regs *regs, struct k_sigaction *ka, regs->regs[30] = (unsigned long)sigtramp; } -static int setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +static int setup_rt_frame(int usig, struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { struct rt_sigframe __user *frame; int err = 0; - frame = get_sigframe(ka, regs); + frame = get_sigframe(ksig, regs); if (!frame) return 1; @@ -269,9 +263,9 @@ static int setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info, err |= __save_altstack(&frame->uc.uc_stack, regs->sp); err |= setup_sigframe(frame, regs, set); if (err == 0) { - setup_return(regs, ka, frame, usig); - if (ka->sa.sa_flags & SA_SIGINFO) { - err |= copy_siginfo_to_user(&frame->info, info); + setup_return(regs, &ksig->ka, frame, usig); + if (ksig->ka.sa.sa_flags & SA_SIGINFO) { + err |= copy_siginfo_to_user(&frame->info, &ksig->info); regs->regs[1] = (unsigned long)&frame->info; regs->regs[2] = (unsigned long)&frame->uc; } @@ -291,13 +285,12 @@ static void setup_restart_syscall(struct pt_regs *regs) /* * OK, we're invoking a handler */ -static void handle_signal(unsigned long sig, struct k_sigaction *ka, - siginfo_t *info, struct pt_regs *regs) +static void handle_signal(struct ksignal *ksig, struct pt_regs *regs) { struct thread_info *thread = current_thread_info(); struct task_struct *tsk = current; sigset_t *oldset = sigmask_to_save(); - int usig = sig; + int usig = ksig->sig; int ret; /* @@ -310,13 +303,12 @@ static void handle_signal(unsigned long sig, struct k_sigaction *ka, * Set up the stack frame */ if (is_compat_task()) { - if (ka->sa.sa_flags & SA_SIGINFO) - ret = compat_setup_rt_frame(usig, ka, info, oldset, - regs); + if (ksig->ka.sa.sa_flags & SA_SIGINFO) + ret = compat_setup_rt_frame(usig, ksig, oldset, regs); else - ret = compat_setup_frame(usig, ka, oldset, regs); + ret = compat_setup_frame(usig, ksig, oldset, regs); } else { - ret = setup_rt_frame(usig, ka, info, oldset, regs); + ret = setup_rt_frame(usig, ksig, oldset, regs); } /* @@ -324,18 +316,14 @@ static void handle_signal(unsigned long sig, struct k_sigaction *ka, */ ret |= !valid_user_regs(®s->user_regs); - if (ret != 0) { - force_sigsegv(sig, tsk); - return; - } - /* * Fast forward the stepping logic so we step into the signal * handler. */ - user_fastforward_single_step(tsk); + if (!ret) + user_fastforward_single_step(tsk); - signal_delivered(sig, info, ka, regs, 0); + signal_setup_done(ret, ksig, 0); } /* @@ -350,10 +338,9 @@ static void handle_signal(unsigned long sig, struct k_sigaction *ka, static void do_signal(struct pt_regs *regs) { unsigned long continue_addr = 0, restart_addr = 0; - struct k_sigaction ka; - siginfo_t info; - int signr, retval = 0; + int retval = 0; int syscall = (int)regs->syscallno; + struct ksignal ksig; /* * If we were from a system call, check for system call restarting... @@ -387,8 +374,7 @@ static void do_signal(struct pt_regs *regs) * Get the signal to deliver. When running under ptrace, at this point * the debugger may change all of our registers. */ - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { + if (get_signal(&ksig)) { /* * Depending on the signal settings, we may need to revert the * decision to restart the system call, but skip this if a @@ -398,12 +384,12 @@ static void do_signal(struct pt_regs *regs) (retval == -ERESTARTNOHAND || retval == -ERESTART_RESTARTBLOCK || (retval == -ERESTARTSYS && - !(ka.sa.sa_flags & SA_RESTART)))) { + !(ksig.ka.sa.sa_flags & SA_RESTART)))) { regs->regs[0] = -EINTR; regs->pc = continue_addr; } - handle_signal(signr, &ka, &info, regs); + handle_signal(&ksig, regs); return; } diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c index c5ee208321c3..1b9ad02837cf 100644 --- a/arch/arm64/kernel/signal32.c +++ b/arch/arm64/kernel/signal32.c @@ -407,20 +407,14 @@ badframe: return 0; } -static void __user *compat_get_sigframe(struct k_sigaction *ka, +static void __user *compat_get_sigframe(struct ksignal *ksig, struct pt_regs *regs, int framesize) { - compat_ulong_t sp = regs->compat_sp; + compat_ulong_t sp = sigsp(regs->compat_sp, ksig); void __user *frame; /* - * This is the X/Open sanctioned signal stack switching. - */ - if ((ka->sa.sa_flags & SA_ONSTACK) && !sas_ss_flags(sp)) - sp = current->sas_ss_sp + current->sas_ss_size; - - /* * ATPCS B01 mandates 8-byte alignment */ frame = compat_ptr((compat_uptr_t)((sp - framesize) & ~7)); @@ -520,18 +514,18 @@ static int compat_setup_sigframe(struct compat_sigframe __user *sf, /* * 32-bit signal handling routines called from signal.c */ -int compat_setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info, +int compat_setup_rt_frame(int usig, struct ksignal *ksig, sigset_t *set, struct pt_regs *regs) { struct compat_rt_sigframe __user *frame; int err = 0; - frame = compat_get_sigframe(ka, regs, sizeof(*frame)); + frame = compat_get_sigframe(ksig, regs, sizeof(*frame)); if (!frame) return 1; - err |= copy_siginfo_to_user32(&frame->info, info); + err |= copy_siginfo_to_user32(&frame->info, &ksig->info); __put_user_error(0, &frame->sig.uc.uc_flags, err); __put_user_error(0, &frame->sig.uc.uc_link, err); @@ -541,7 +535,7 @@ int compat_setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info, err |= compat_setup_sigframe(&frame->sig, regs, set); if (err == 0) { - compat_setup_return(regs, ka, frame->sig.retcode, frame, usig); + compat_setup_return(regs, &ksig->ka, frame->sig.retcode, frame, usig); regs->regs[1] = (compat_ulong_t)(unsigned long)&frame->info; regs->regs[2] = (compat_ulong_t)(unsigned long)&frame->sig.uc; } @@ -549,13 +543,13 @@ int compat_setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info, return err; } -int compat_setup_frame(int usig, struct k_sigaction *ka, sigset_t *set, +int compat_setup_frame(int usig, struct ksignal *ksig, sigset_t *set, struct pt_regs *regs) { struct compat_sigframe __user *frame; int err = 0; - frame = compat_get_sigframe(ka, regs, sizeof(*frame)); + frame = compat_get_sigframe(ksig, regs, sizeof(*frame)); if (!frame) return 1; @@ -564,7 +558,7 @@ int compat_setup_frame(int usig, struct k_sigaction *ka, sigset_t *set, err |= compat_setup_sigframe(frame, regs, set); if (err == 0) - compat_setup_return(regs, ka, frame->retcode, frame, usig); + compat_setup_return(regs, &ksig->ka, frame->retcode, frame, usig); return err; } diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index 3e2f5ebbf63e..474339718105 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -51,6 +51,9 @@ #include <asm/tlbflush.h> #include <asm/ptrace.h> +#define CREATE_TRACE_POINTS +#include <trace/events/ipi.h> + /* * as from 2.5, kernels no longer have an init_tasks structure * so we need some other way of telling a new secondary core @@ -313,8 +316,6 @@ void __init smp_prepare_boot_cpu(void) set_my_cpu_offset(per_cpu_offset(smp_processor_id())); } -static void (*smp_cross_call)(const struct cpumask *, unsigned int); - /* * Enumerate the possible CPU set from the device tree and build the * cpu logical map array containing MPIDR values related to logical @@ -469,32 +470,15 @@ void __init smp_prepare_cpus(unsigned int max_cpus) } } +static void (*__smp_cross_call)(const struct cpumask *, unsigned int); void __init set_smp_cross_call(void (*fn)(const struct cpumask *, unsigned int)) { - smp_cross_call = fn; + __smp_cross_call = fn; } -void arch_send_call_function_ipi_mask(const struct cpumask *mask) -{ - smp_cross_call(mask, IPI_CALL_FUNC); -} - -void arch_send_call_function_single_ipi(int cpu) -{ - smp_cross_call(cpumask_of(cpu), IPI_CALL_FUNC_SINGLE); -} - -#ifdef CONFIG_IRQ_WORK -void arch_irq_work_raise(void) -{ - if (smp_cross_call) - smp_cross_call(cpumask_of(smp_processor_id()), IPI_IRQ_WORK); -} -#endif - -static const char *ipi_types[NR_IPI] = { -#define S(x,s) [x - IPI_RESCHEDULE] = s +static const char *ipi_types[NR_IPI] __tracepoint_string = { +#define S(x,s) [x] = s S(IPI_RESCHEDULE, "Rescheduling interrupts"), S(IPI_CALL_FUNC, "Function call interrupts"), S(IPI_CALL_FUNC_SINGLE, "Single function call interrupts"), @@ -503,12 +487,18 @@ static const char *ipi_types[NR_IPI] = { S(IPI_IRQ_WORK, "IRQ work interrupts"), }; +static void smp_cross_call(const struct cpumask *target, unsigned int ipinr) +{ + trace_ipi_raise(target, ipi_types[ipinr]); + __smp_cross_call(target, ipinr); +} + void show_ipi_list(struct seq_file *p, int prec) { unsigned int cpu, i; for (i = 0; i < NR_IPI; i++) { - seq_printf(p, "%*s%u:%s", prec - 1, "IPI", i + IPI_RESCHEDULE, + seq_printf(p, "%*s%u:%s", prec - 1, "IPI", i, prec >= 4 ? " " : ""); for_each_online_cpu(cpu) seq_printf(p, "%10u ", @@ -528,6 +518,24 @@ u64 smp_irq_stat_cpu(unsigned int cpu) return sum; } +void arch_send_call_function_ipi_mask(const struct cpumask *mask) +{ + smp_cross_call(mask, IPI_CALL_FUNC); +} + +void arch_send_call_function_single_ipi(int cpu) +{ + smp_cross_call(cpumask_of(cpu), IPI_CALL_FUNC_SINGLE); +} + +#ifdef CONFIG_IRQ_WORK +void arch_irq_work_raise(void) +{ + if (__smp_cross_call) + smp_cross_call(cpumask_of(smp_processor_id()), IPI_IRQ_WORK); +} +#endif + static DEFINE_RAW_SPINLOCK(stop_lock); /* @@ -559,8 +567,10 @@ void handle_IPI(int ipinr, struct pt_regs *regs) unsigned int cpu = smp_processor_id(); struct pt_regs *old_regs = set_irq_regs(regs); - if (ipinr >= IPI_RESCHEDULE && ipinr < IPI_RESCHEDULE + NR_IPI) - __inc_irq_stat(cpu, ipi_irqs[ipinr - IPI_RESCHEDULE]); + if ((unsigned)ipinr < NR_IPI) { + trace_ipi_entry(ipi_types[ipinr]); + __inc_irq_stat(cpu, ipi_irqs[ipinr]); + } switch (ipinr) { case IPI_RESCHEDULE: @@ -605,6 +615,9 @@ void handle_IPI(int ipinr, struct pt_regs *regs) pr_crit("CPU%u: Unknown IPI message 0x%x\n", cpu, ipinr); break; } + + if ((unsigned)ipinr < NR_IPI) + trace_ipi_exit(ipi_types[ipinr]); set_irq_regs(old_regs); } diff --git a/arch/avr32/kernel/signal.c b/arch/avr32/kernel/signal.c index b80c0b3d2bab..d309fbcc3bd6 100644 --- a/arch/avr32/kernel/signal.c +++ b/arch/avr32/kernel/signal.c @@ -127,24 +127,20 @@ setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs) } static inline void __user * -get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, int framesize) +get_sigframe(struct ksignal *ksig, struct pt_regs *regs, int framesize) { - unsigned long sp = regs->sp; - - if ((ka->sa.sa_flags & SA_ONSTACK) && !sas_ss_flags(sp)) - sp = current->sas_ss_sp + current->sas_ss_size; + unsigned long sp = sigsp(regs->sp, ksig); return (void __user *)((sp - framesize) & ~3); } static int -setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs) { struct rt_sigframe __user *frame; int err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, regs, sizeof(*frame)); err = -EFAULT; if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame))) goto out; @@ -164,7 +160,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err = __put_user(0x3008d733 | (__NR_rt_sigreturn << 20), &frame->retcode); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); /* Set up the ucontext */ err |= __put_user(0, &frame->uc.uc_flags); @@ -176,12 +172,12 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, if (err) goto out; - regs->r12 = sig; + regs->r12 = ksig->sig; regs->r11 = (unsigned long) &frame->info; regs->r10 = (unsigned long) &frame->uc; regs->sp = (unsigned long) frame; - if (ka->sa.sa_flags & SA_RESTORER) - regs->lr = (unsigned long)ka->sa.sa_restorer; + if (ksig->ka.sa.sa_flags & SA_RESTORER) + regs->lr = (unsigned long)ksig->ka.sa.sa_restorer; else { printk(KERN_NOTICE "[%s:%d] did not set SA_RESTORER\n", current->comm, current->pid); @@ -189,10 +185,10 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, } pr_debug("SIG deliver [%s:%d]: sig=%d sp=0x%lx pc=0x%lx->0x%p lr=0x%lx\n", - current->comm, current->pid, sig, regs->sp, - regs->pc, ka->sa.sa_handler, regs->lr); + current->comm, current->pid, ksig->sig, regs->sp, + regs->pc, ksig->ka.sa.sa_handler, regs->lr); - regs->pc = (unsigned long) ka->sa.sa_handler; + regs->pc = (unsigned long)ksig->ka.sa.sa_handler; out: return err; @@ -208,15 +204,14 @@ static inline void setup_syscall_restart(struct pt_regs *regs) } static inline void -handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, - struct pt_regs *regs, int syscall) +handle_signal(struct ksignal *ksig, struct pt_regs *regs, int syscall) { int ret; /* * Set up the stack frame */ - ret = setup_rt_frame(sig, ka, info, sigmask_to_save(), regs); + ret = setup_rt_frame(ksig, sigmask_to_save(), regs); /* * Check that the resulting registers are sane @@ -226,10 +221,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, /* * Block the signal if we were successful. */ - if (ret != 0) - force_sigsegv(sig, current); - else - signal_delivered(sig, info, ka, regs, 0); + signal_setup_done(ret, ksig, 0); } /* @@ -239,9 +231,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, */ static void do_signal(struct pt_regs *regs, int syscall) { - siginfo_t info; - int signr; - struct k_sigaction ka; + struct ksignal ksig; /* * We want the common case to go fast, which is why we may in @@ -251,18 +241,18 @@ static void do_signal(struct pt_regs *regs, int syscall) if (!user_mode(regs)) return; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); + get_signal(&ksig); if (syscall) { switch (regs->r12) { case -ERESTART_RESTARTBLOCK: case -ERESTARTNOHAND: - if (signr > 0) { + if (ksig.sig > 0) { regs->r12 = -EINTR; break; } /* fall through */ case -ERESTARTSYS: - if (signr > 0 && !(ka.sa.sa_flags & SA_RESTART)) { + if (ksig.sig > 0 && !(ksig.ka.sa.sa_flags & SA_RESTART)) { regs->r12 = -EINTR; break; } @@ -272,13 +262,13 @@ static void do_signal(struct pt_regs *regs, int syscall) } } - if (signr == 0) { + if (!ksig.sig) { /* No signal to deliver -- put the saved sigmask back */ restore_saved_sigmask(); return; } - handle_signal(signr, &ka, &info, regs, syscall); + handle_signal(&ksig, regs, syscall); } asmlinkage void do_notify_resume(struct pt_regs *regs, struct thread_info *ti) diff --git a/arch/blackfin/kernel/signal.c b/arch/blackfin/kernel/signal.c index b022af6c48f8..ef275571d885 100644 --- a/arch/blackfin/kernel/signal.c +++ b/arch/blackfin/kernel/signal.c @@ -135,40 +135,31 @@ static inline int rt_setup_sigcontext(struct sigcontext *sc, struct pt_regs *reg return err; } -static inline void *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, +static inline void *get_sigframe(struct ksignal *ksig, size_t frame_size) { - unsigned long usp; + unsigned long usp = sigsp(rdusp(), ksig); - /* Default to using normal stack. */ - usp = rdusp(); - - /* This is the X/Open sanctioned signal stack switching. */ - if (ka->sa.sa_flags & SA_ONSTACK) { - if (!on_sig_stack(usp)) - usp = current->sas_ss_sp + current->sas_ss_size; - } return (void *)((usp - frame_size) & -8UL); } static int -setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t * info, - sigset_t * set, struct pt_regs *regs) +setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs) { struct rt_sigframe *frame; int err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, sizeof(*frame)); err |= __put_user((current_thread_info()->exec_domain && current_thread_info()->exec_domain->signal_invmap - && sig < 32 + && ksig->sig < 32 ? current_thread_info()->exec_domain-> - signal_invmap[sig] : sig), &frame->sig); + signal_invmap[ksig->sig] : ksig->sig), &frame->sig); err |= __put_user(&frame->info, &frame->pinfo); err |= __put_user(&frame->uc, &frame->puc); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); /* Create the ucontext. */ err |= __put_user(0, &frame->uc.uc_flags); @@ -183,7 +174,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t * info, /* Set up registers for signal handler */ if (current->personality & FDPIC_FUNCPTRS) { struct fdpic_func_descriptor __user *funcptr = - (struct fdpic_func_descriptor *) ka->sa.sa_handler; + (struct fdpic_func_descriptor *) ksig->ka.sa.sa_handler; u32 pc, p3; err |= __get_user(pc, &funcptr->text); err |= __get_user(p3, &funcptr->GOT); @@ -192,7 +183,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t * info, regs->pc = pc; regs->p3 = p3; } else - regs->pc = (unsigned long)ka->sa.sa_handler; + regs->pc = (unsigned long)ksig->ka.sa.sa_handler; wrusp((unsigned long)frame); regs->rets = SIGRETURN_STUB; @@ -237,20 +228,19 @@ handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler) * OK, we're invoking a handler */ static void -handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka, - struct pt_regs *regs) +handle_signal(struct ksignal *ksig, struct pt_regs *regs) { + int ret; + /* are we from a system call? to see pt_regs->orig_p0 */ if (regs->orig_p0 >= 0) /* If so, check system call restarting.. */ - handle_restart(regs, ka, 1); + handle_restart(regs, &ksig->ka, 1); /* set up the stack frame */ - if (setup_rt_frame(sig, ka, info, sigmask_to_save(), regs) < 0) - force_sigsegv(sig, current); - else - signal_delivered(sig, info, ka, regs, - test_thread_flag(TIF_SINGLESTEP)); + ret = setup_rt_frame(ksig, sigmask_to_save(), regs); + + signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP)); } /* @@ -264,16 +254,13 @@ handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka, */ asmlinkage void do_signal(struct pt_regs *regs) { - siginfo_t info; - int signr; - struct k_sigaction ka; + struct ksignal ksig; current->thread.esp0 = (unsigned long)regs; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { + if (get_signal(&ksig)) { /* Whee! Actually deliver the signal. */ - handle_signal(signr, &info, &ka, regs); + handle_signal(&ksig, regs); return; } diff --git a/arch/c6x/kernel/signal.c b/arch/c6x/kernel/signal.c index 3998b24e26f2..fe68226f6c4d 100644 --- a/arch/c6x/kernel/signal.c +++ b/arch/c6x/kernel/signal.c @@ -127,17 +127,11 @@ static int setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, return err; } -static inline void __user *get_sigframe(struct k_sigaction *ka, +static inline void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs, unsigned long framesize) { - unsigned long sp = regs->sp; - - /* - * This is the X/Open sanctioned signal stack switching. - */ - if ((ka->sa.sa_flags & SA_ONSTACK) && sas_ss_flags(sp) == 0) - sp = current->sas_ss_sp + current->sas_ss_size; + unsigned long sp = sigsp(regs->sp, ksig); /* * No matter what happens, 'sp' must be dword @@ -146,21 +140,21 @@ static inline void __user *get_sigframe(struct k_sigaction *ka, return (void __user *)((sp - framesize) & ~7); } -static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { struct rt_sigframe __user *frame; unsigned long __user *retcode; int err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, regs, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto segv_and_exit; + return -EFAULT; err |= __put_user(&frame->info, &frame->pinfo); err |= __put_user(&frame->uc, &frame->puc); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); /* Clear all the bits of the ucontext we don't use. */ err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext)); @@ -188,7 +182,7 @@ static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info, #undef COPY if (err) - goto segv_and_exit; + return -EFAULT; flush_icache_range((unsigned long) &frame->retcode, (unsigned long) &frame->retcode + RETCODE_SIZE); @@ -198,10 +192,10 @@ static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info, /* Change user context to branch to signal handler */ regs->sp = (unsigned long) frame - 8; regs->b3 = (unsigned long) retcode; - regs->pc = (unsigned long) ka->sa.sa_handler; + regs->pc = (unsigned long) ksig->ka.sa.sa_handler; /* Give the signal number to the handler */ - regs->a4 = signr; + regs->a4 = ksig->sig; /* * For realtime signals we must also set the second and third @@ -212,10 +206,6 @@ static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info, regs->a6 = (unsigned long)&frame->uc; return 0; - -segv_and_exit: - force_sigsegv(signr, current); - return -EFAULT; } static inline void @@ -245,10 +235,11 @@ do_restart: /* * handle the actual delivery of a signal to userspace */ -static void handle_signal(int sig, - siginfo_t *info, struct k_sigaction *ka, - struct pt_regs *regs, int syscall) +static void handle_signal(struct ksignal *ksig, struct pt_regs *regs, + int syscall) { + int ret; + /* Are we from a system call? */ if (syscall) { /* If so, check system call restarting.. */ @@ -259,7 +250,7 @@ static void handle_signal(int sig, break; case -ERESTARTSYS: - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { regs->a4 = -EINTR; break; } @@ -272,9 +263,8 @@ static void handle_signal(int sig, } /* Set up the stack frame */ - if (setup_rt_frame(sig, ka, info, sigmask_to_save(), regs) < 0) - return; - signal_delivered(sig, info, ka, regs, 0); + ret = setup_rt_frame(ksig, sigmask_to_save(), regs); + signal_setup_done(ret, ksig, 0); } /* @@ -282,18 +272,15 @@ static void handle_signal(int sig, */ static void do_signal(struct pt_regs *regs, int syscall) { - struct k_sigaction ka; - siginfo_t info; - int signr; + struct ksignal ksig; /* we want the common case to go fast, which is why we may in certain * cases get here from kernel mode */ if (!user_mode(regs)) return; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { - handle_signal(signr, &info, &ka, regs, syscall); + if (get_signal(&ksig)) { + handle_signal(&ksig, regs, syscall); return; } diff --git a/arch/cris/arch-v10/kernel/signal.c b/arch/cris/arch-v10/kernel/signal.c index 61ce6273a895..9b32d338838b 100644 --- a/arch/cris/arch-v10/kernel/signal.c +++ b/arch/cris/arch-v10/kernel/signal.c @@ -203,15 +203,9 @@ static int setup_sigcontext(struct sigcontext __user *sc, * - usually on the stack. */ static inline void __user * -get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size) +get_sigframe(struct ksignal *ksig, size_t frame_size) { - unsigned long sp = rdusp(); - - /* This is the X/Open sanctioned signal stack switching. */ - if (ka->sa.sa_flags & SA_ONSTACK) { - if (! on_sig_stack(sp)) - sp = current->sas_ss_sp + current->sas_ss_size; - } + unsigned long sp = sigsp(rdusp(), ksig); /* make sure the frame is dword-aligned */ @@ -228,33 +222,33 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size) * user-mode trampoline. */ -static int setup_frame(int sig, struct k_sigaction *ka, - sigset_t *set, struct pt_regs *regs) +static int setup_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { struct sigframe __user *frame; unsigned long return_ip; int err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; err |= setup_sigcontext(&frame->sc, regs, set->sig[0]); if (err) - goto give_sigsegv; + return -EFAULT; if (_NSIG_WORDS > 1) { err |= __copy_to_user(frame->extramask, &set->sig[1], sizeof(frame->extramask)); } if (err) - goto give_sigsegv; + return -EFAULT; /* Set up to return from userspace. If provided, use a stub already in userspace. */ - if (ka->sa.sa_flags & SA_RESTORER) { - return_ip = (unsigned long)ka->sa.sa_restorer; + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + return_ip = (unsigned long)ksig->ka.sa.sa_restorer; } else { /* trampoline - the desired return ip is the retcode itself */ return_ip = (unsigned long)&frame->retcode; @@ -265,42 +259,38 @@ static int setup_frame(int sig, struct k_sigaction *ka, } if (err) - goto give_sigsegv; + return -EFAULT; /* Set up registers for signal handler */ - regs->irp = (unsigned long) ka->sa.sa_handler; /* what we enter NOW */ + regs->irp = (unsigned long) ksig->ka.sa.sa_handler; /* what we enter NOW */ regs->srp = return_ip; /* what we enter LATER */ - regs->r10 = sig; /* first argument is signo */ + regs->r10 = ksig->sig; /* first argument is signo */ /* actually move the usp to reflect the stacked frame */ wrusp((unsigned long)frame); return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } -static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { struct rt_sigframe __user *frame; unsigned long return_ip; int err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; err |= __put_user(&frame->info, &frame->pinfo); err |= __put_user(&frame->uc, &frame->puc); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); if (err) - goto give_sigsegv; + return -EFAULT; /* Clear all the bits of the ucontext we don't use. */ err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext)); @@ -312,12 +302,12 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= __save_altstack(&frame->uc.uc_stack, rdusp()); if (err) - goto give_sigsegv; + return -EFAULT; /* Set up to return from userspace. If provided, use a stub already in userspace. */ - if (ka->sa.sa_flags & SA_RESTORER) { - return_ip = (unsigned long)ka->sa.sa_restorer; + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + return_ip = (unsigned long)ksig->ka.sa.sa_restorer; } else { /* trampoline - the desired return ip is the retcode itself */ return_ip = (unsigned long)&frame->retcode; @@ -329,18 +319,18 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, } if (err) - goto give_sigsegv; + return -EFAULT; /* TODO what is the current->exec_domain stuff and invmap ? */ /* Set up registers for signal handler */ /* What we enter NOW */ - regs->irp = (unsigned long) ka->sa.sa_handler; + regs->irp = (unsigned long) ksig->ka.sa.sa_handler; /* What we enter LATER */ regs->srp = return_ip; /* First argument is signo */ - regs->r10 = sig; + regs->r10 = ksig->sig; /* Second argument is (siginfo_t *) */ regs->r11 = (unsigned long)&frame->info; /* Third argument is unused */ @@ -350,19 +340,14 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, wrusp((unsigned long)frame); return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } /* * OK, we're invoking a handler */ -static inline void handle_signal(int canrestart, unsigned long sig, - siginfo_t *info, struct k_sigaction *ka, - struct pt_regs *regs) +static inline void handle_signal(int canrestart, struct ksignal *ksig, + struct pt_regs *regs) { sigset_t *oldset = sigmask_to_save(); int ret; @@ -383,7 +368,7 @@ static inline void handle_signal(int canrestart, unsigned long sig, /* ERESTARTSYS means to restart the syscall if * there is no handler or the handler was * registered with SA_RESTART */ - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { regs->r10 = -EINTR; break; } @@ -396,13 +381,12 @@ static inline void handle_signal(int canrestart, unsigned long sig, } /* Set up the stack frame */ - if (ka->sa.sa_flags & SA_SIGINFO) - ret = setup_rt_frame(sig, ka, info, oldset, regs); + if (ksig->ka.sa.sa_flags & SA_SIGINFO) + ret = setup_rt_frame(ksig, oldset, regs); else - ret = setup_frame(sig, ka, oldset, regs); + ret = setup_frame(ksig, oldset, regs); - if (ret == 0) - signal_delivered(sig, info, ka, regs, 0); + signal_setup_done(ret, ksig, 0); } /* @@ -419,9 +403,7 @@ static inline void handle_signal(int canrestart, unsigned long sig, void do_signal(int canrestart, struct pt_regs *regs) { - siginfo_t info; - int signr; - struct k_sigaction ka; + struct ksignal ksig; /* * We want the common case to go fast, which @@ -432,10 +414,9 @@ void do_signal(int canrestart, struct pt_regs *regs) if (!user_mode(regs)) return; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { + if (get_signal(&ksig)) { /* Whee! Actually deliver the signal. */ - handle_signal(canrestart, signr, &info, &ka, regs); + handle_signal(canrestart, &ksig, regs); return; } diff --git a/arch/cris/arch-v32/kernel/signal.c b/arch/cris/arch-v32/kernel/signal.c index 01d1375c9004..78ce3b1c9bcb 100644 --- a/arch/cris/arch-v32/kernel/signal.c +++ b/arch/cris/arch-v32/kernel/signal.c @@ -189,17 +189,9 @@ setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, /* Figure out where to put the new signal frame - usually on the stack. */ static inline void __user * -get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size) +get_sigframe(struct ksignal *ksig, size_t frame_size) { - unsigned long sp; - - sp = rdusp(); - - /* This is the X/Open sanctioned signal stack switching. */ - if (ka->sa.sa_flags & SA_ONSTACK) { - if (!on_sig_stack(sp)) - sp = current->sas_ss_sp + current->sas_ss_size; - } + unsigned long sp = sigsp(rdusp(), ksig); /* Make sure the frame is dword-aligned. */ sp &= ~3; @@ -215,23 +207,22 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size) * trampoline. */ static int -setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, - struct pt_regs * regs) +setup_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs) { int err; unsigned long return_ip; struct signal_frame __user *frame; err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; err |= setup_sigcontext(&frame->sc, regs, set->sig[0]); if (err) - goto give_sigsegv; + return -EFAULT; if (_NSIG_WORDS > 1) { err |= __copy_to_user(frame->extramask, &set->sig[1], @@ -239,14 +230,14 @@ setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, } if (err) - goto give_sigsegv; + return -EFAULT; /* * Set up to return from user-space. If provided, use a stub * already located in user-space. */ - if (ka->sa.sa_flags & SA_RESTORER) { - return_ip = (unsigned long)ka->sa.sa_restorer; + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + return_ip = (unsigned long)ksig->ka.sa.sa_restorer; } else { /* Trampoline - the desired return ip is in the signal return page. */ return_ip = cris_signal_return_page; @@ -264,7 +255,7 @@ setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, } if (err) - goto give_sigsegv; + return -EFAULT; /* * Set up registers for signal handler. @@ -273,42 +264,37 @@ setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, * Where the code enter later. * First argument, signo. */ - regs->erp = (unsigned long) ka->sa.sa_handler; + regs->erp = (unsigned long) ksig->ka.sa.sa_handler; regs->srp = return_ip; - regs->r10 = sig; + regs->r10 = ksig->sig; /* Actually move the USP to reflect the stacked frame. */ wrusp((unsigned long)frame); return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } static int -setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs * regs) +setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs) { int err; unsigned long return_ip; struct rt_signal_frame __user *frame; err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; /* TODO: what is the current->exec_domain stuff and invmap ? */ err |= __put_user(&frame->info, &frame->pinfo); err |= __put_user(&frame->uc, &frame->puc); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); if (err) - goto give_sigsegv; + return -EFAULT; /* Clear all the bits of the ucontext we don't use. */ err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext)); @@ -317,14 +303,14 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= __save_altstack(&frame->uc.uc_stack, rdusp()); if (err) - goto give_sigsegv; + return -EFAULT; /* * Set up to return from user-space. If provided, use a stub * already located in user-space. */ - if (ka->sa.sa_flags & SA_RESTORER) { - return_ip = (unsigned long) ka->sa.sa_restorer; + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + return_ip = (unsigned long) ksig->ka.sa.sa_restorer; } else { /* Trampoline - the desired return ip is in the signal return page. */ return_ip = cris_signal_return_page + 6; @@ -345,7 +331,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, } if (err) - goto give_sigsegv; + return -EFAULT; /* * Set up registers for signal handler. @@ -356,9 +342,9 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, * Second argument is (siginfo_t *). * Third argument is unused. */ - regs->erp = (unsigned long) ka->sa.sa_handler; + regs->erp = (unsigned long) ksig->ka.sa.sa_handler; regs->srp = return_ip; - regs->r10 = sig; + regs->r10 = ksig->sig; regs->r11 = (unsigned long) &frame->info; regs->r12 = 0; @@ -366,17 +352,11 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, wrusp((unsigned long)frame); return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } /* Invoke a signal handler to, well, handle the signal. */ static inline void -handle_signal(int canrestart, unsigned long sig, - siginfo_t *info, struct k_sigaction *ka, - struct pt_regs * regs) +handle_signal(int canrestart, struct ksignal *ksig, struct pt_regs *regs) { sigset_t *oldset = sigmask_to_save(); int ret; @@ -404,7 +384,7 @@ handle_signal(int canrestart, unsigned long sig, * there is no handler, or the handler * was registered with SA_RESTART. */ - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { regs->r10 = -EINTR; break; } @@ -423,13 +403,12 @@ handle_signal(int canrestart, unsigned long sig, } /* Set up the stack frame. */ - if (ka->sa.sa_flags & SA_SIGINFO) - ret = setup_rt_frame(sig, ka, info, oldset, regs); + if (ksig->ka.sa.sa_flags & SA_SIGINFO) + ret = setup_rt_frame(ksig, oldset, regs); else - ret = setup_frame(sig, ka, oldset, regs); + ret = setup_frame(ksig, oldset, regs); - if (ret == 0) - signal_delivered(sig, info, ka, regs, 0); + signal_setup_done(ret, ksig, 0); } /* @@ -446,9 +425,7 @@ handle_signal(int canrestart, unsigned long sig, void do_signal(int canrestart, struct pt_regs *regs) { - int signr; - siginfo_t info; - struct k_sigaction ka; + struct ksignal ksig; /* * The common case should go fast, which is why this point is @@ -458,11 +435,9 @@ do_signal(int canrestart, struct pt_regs *regs) if (!user_mode(regs)) return; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - - if (signr > 0) { + if (get_signal(&ksig)) { /* Whee! Actually deliver the signal. */ - handle_signal(canrestart, signr, &info, &ka, regs); + handle_signal(canrestart, &ksig, regs); return; } diff --git a/arch/frv/kernel/signal.c b/arch/frv/kernel/signal.c index d822700d4f15..dc3d59de0870 100644 --- a/arch/frv/kernel/signal.c +++ b/arch/frv/kernel/signal.c @@ -158,19 +158,10 @@ static int setup_sigcontext(struct sigcontext __user *sc, unsigned long mask) /* * Determine which stack to use.. */ -static inline void __user *get_sigframe(struct k_sigaction *ka, +static inline void __user *get_sigframe(struct ksignal *ksig, size_t frame_size) { - unsigned long sp; - - /* Default to using normal stack */ - sp = __frame->sp; - - /* This is the X/Open sanctioned signal stack switching. */ - if (ka->sa.sa_flags & SA_ONSTACK) { - if (! sas_ss_flags(sp)) - sp = current->sas_ss_sp + current->sas_ss_size; - } + unsigned long sp = sigsp(__frame->sp, ksig); return (void __user *) ((sp - frame_size) & ~7UL); @@ -180,17 +171,17 @@ static inline void __user *get_sigframe(struct k_sigaction *ka, /* * */ -static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set) +static int setup_frame(struct ksignal *ksig, sigset_t *set) { struct sigframe __user *frame; - int rsig; + int rsig, sig = ksig->sig; set_fs(USER_DS); - frame = get_sigframe(ka, sizeof(*frame)); + frame = get_sigframe(ksig, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; rsig = sig; if (sig < 32 && @@ -199,22 +190,22 @@ static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set) rsig = __current_thread_info->exec_domain->signal_invmap[sig]; if (__put_user(rsig, &frame->sig) < 0) - goto give_sigsegv; + return -EFAULT; if (setup_sigcontext(&frame->sc, set->sig[0])) - goto give_sigsegv; + return -EFAULT; if (_NSIG_WORDS > 1) { if (__copy_to_user(frame->extramask, &set->sig[1], sizeof(frame->extramask))) - goto give_sigsegv; + return -EFAULT; } /* Set up to return from userspace. If provided, use a stub * already in userspace. */ - if (ka->sa.sa_flags & SA_RESTORER) { - if (__put_user(ka->sa.sa_restorer, &frame->pretcode) < 0) - goto give_sigsegv; + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + if (__put_user(ksig->ka.sa.sa_restorer, &frame->pretcode) < 0) + return -EFAULT; } else { /* Set up the following code on the stack: @@ -224,7 +215,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set) if (__put_user((__sigrestore_t)frame->retcode, &frame->pretcode) || __put_user(0x8efc0000|__NR_sigreturn, &frame->retcode[0]) || __put_user(0xc0700000, &frame->retcode[1])) - goto give_sigsegv; + return -EFAULT; flush_icache_range((unsigned long) frame->retcode, (unsigned long) (frame->retcode + 2)); @@ -233,14 +224,14 @@ static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set) /* Set up registers for the signal handler */ if (current->personality & FDPIC_FUNCPTRS) { struct fdpic_func_descriptor __user *funcptr = - (struct fdpic_func_descriptor __user *) ka->sa.sa_handler; + (struct fdpic_func_descriptor __user *) ksig->ka.sa.sa_handler; struct fdpic_func_descriptor desc; if (copy_from_user(&desc, funcptr, sizeof(desc))) - goto give_sigsegv; + return -EFAULT; __frame->pc = desc.text; __frame->gr15 = desc.GOT; } else { - __frame->pc = (unsigned long) ka->sa.sa_handler; + __frame->pc = (unsigned long) ksig->ka.sa.sa_handler; __frame->gr15 = 0; } @@ -255,29 +246,23 @@ static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set) #endif return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; - } /* end setup_frame() */ /*****************************************************************************/ /* * */ -static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set) +static int setup_rt_frame(struct ksignal *ksig, sigset_t *set) { struct rt_sigframe __user *frame; - int rsig; + int rsig, sig = ksig->sig; set_fs(USER_DS); - frame = get_sigframe(ka, sizeof(*frame)); + frame = get_sigframe(ksig, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; rsig = sig; if (sig < 32 && @@ -288,28 +273,28 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, if (__put_user(rsig, &frame->sig) || __put_user(&frame->info, &frame->pinfo) || __put_user(&frame->uc, &frame->puc)) - goto give_sigsegv; + return -EFAULT; - if (copy_siginfo_to_user(&frame->info, info)) - goto give_sigsegv; + if (copy_siginfo_to_user(&frame->info, &ksig->info)) + return -EFAULT; /* Create the ucontext. */ if (__put_user(0, &frame->uc.uc_flags) || __put_user(NULL, &frame->uc.uc_link) || __save_altstack(&frame->uc.uc_stack, __frame->sp)) - goto give_sigsegv; + return -EFAULT; if (setup_sigcontext(&frame->uc.uc_mcontext, set->sig[0])) - goto give_sigsegv; + return -EFAULT; if (__copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set))) - goto give_sigsegv; + return -EFAULT; /* Set up to return from userspace. If provided, use a stub * already in userspace. */ - if (ka->sa.sa_flags & SA_RESTORER) { - if (__put_user(ka->sa.sa_restorer, &frame->pretcode)) - goto give_sigsegv; + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + if (__put_user(ksig->ka.sa.sa_restorer, &frame->pretcode)) + return -EFAULT; } else { /* Set up the following code on the stack: @@ -319,7 +304,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, if (__put_user((__sigrestore_t)frame->retcode, &frame->pretcode) || __put_user(0x8efc0000|__NR_rt_sigreturn, &frame->retcode[0]) || __put_user(0xc0700000, &frame->retcode[1])) - goto give_sigsegv; + return -EFAULT; flush_icache_range((unsigned long) frame->retcode, (unsigned long) (frame->retcode + 2)); @@ -328,14 +313,14 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, /* Set up registers for signal handler */ if (current->personality & FDPIC_FUNCPTRS) { struct fdpic_func_descriptor __user *funcptr = - (struct fdpic_func_descriptor __user *) ka->sa.sa_handler; + (struct fdpic_func_descriptor __user *) ksig->ka.sa.sa_handler; struct fdpic_func_descriptor desc; if (copy_from_user(&desc, funcptr, sizeof(desc))) - goto give_sigsegv; + return -EFAULT; __frame->pc = desc.text; __frame->gr15 = desc.GOT; } else { - __frame->pc = (unsigned long) ka->sa.sa_handler; + __frame->pc = (unsigned long) ksig->ka.sa.sa_handler; __frame->gr15 = 0; } @@ -349,21 +334,15 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, sig, current->comm, current->pid, frame, __frame->pc, frame->pretcode); #endif - return 0; -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; - } /* end setup_rt_frame() */ /*****************************************************************************/ /* * OK, we're invoking a handler */ -static void handle_signal(unsigned long sig, siginfo_t *info, - struct k_sigaction *ka) +static void handle_signal(struct ksignal *ksig) { sigset_t *oldset = sigmask_to_save(); int ret; @@ -378,7 +357,7 @@ static void handle_signal(unsigned long sig, siginfo_t *info, break; case -ERESTARTSYS: - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { __frame->gr8 = -EINTR; break; } @@ -392,16 +371,12 @@ static void handle_signal(unsigned long sig, siginfo_t *info, } /* Set up the stack frame */ - if (ka->sa.sa_flags & SA_SIGINFO) - ret = setup_rt_frame(sig, ka, info, oldset); + if (ksig->ka.sa.sa_flags & SA_SIGINFO) + ret = setup_rt_frame(ksig, oldset); else - ret = setup_frame(sig, ka, oldset); - - if (ret) - return; + ret = setup_frame(ksig, oldset); - signal_delivered(sig, info, ka, __frame, - test_thread_flag(TIF_SINGLESTEP)); + signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP)); } /* end handle_signal() */ /*****************************************************************************/ @@ -412,13 +387,10 @@ static void handle_signal(unsigned long sig, siginfo_t *info, */ static void do_signal(void) { - struct k_sigaction ka; - siginfo_t info; - int signr; + struct ksignal ksig; - signr = get_signal_to_deliver(&info, &ka, __frame, NULL); - if (signr > 0) { - handle_signal(signr, &info, &ka); + if (get_signal(&ksig)) { + handle_signal(&ksig); return; } diff --git a/arch/hexagon/kernel/signal.c b/arch/hexagon/kernel/signal.c index d7c73874b515..eadd70e47e7e 100644 --- a/arch/hexagon/kernel/signal.c +++ b/arch/hexagon/kernel/signal.c @@ -36,18 +36,10 @@ struct rt_sigframe { struct ucontext uc; }; -static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, +static void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs, size_t frame_size) { - unsigned long sp = regs->r29; - - /* check if we would overflow the alt stack */ - if (on_sig_stack(sp) && !likely(on_sig_stack(sp - frame_size))) - return (void __user __force *)-1UL; - - /* Switch to signal stack if appropriate */ - if ((ka->sa.sa_flags & SA_ONSTACK) && (sas_ss_flags(sp) == 0)) - sp = current->sas_ss_sp + current->sas_ss_size; + unsigned long sp = sigsp(regs->r29, ksig); return (void __user *)((sp - frame_size) & ~(sizeof(long long) - 1)); } @@ -112,20 +104,20 @@ static int restore_sigcontext(struct pt_regs *regs, /* * Setup signal stack frame with siginfo structure */ -static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { int err = 0; struct rt_sigframe __user *frame; struct hexagon_vdso *vdso = current->mm->context.vdso; - frame = get_sigframe(ka, regs, sizeof(struct rt_sigframe)); + frame = get_sigframe(ksig, regs, sizeof(struct rt_sigframe)); if (!access_ok(VERIFY_WRITE, frame, sizeof(struct rt_sigframe))) - goto sigsegv; + return -EFAULT; - if (copy_siginfo_to_user(&frame->info, info)) - goto sigsegv; + if (copy_siginfo_to_user(&frame->info, &ksig->info)) + return -EFAULT; /* The on-stack signal trampoline is no longer executed; * however, the libgcc signal frame unwinding code checks for @@ -137,29 +129,26 @@ static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info, err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); err |= __save_altstack(&frame->uc.uc_stack, user_stack_pointer(regs)); if (err) - goto sigsegv; + return -EFAULT; /* Load r0/r1 pair with signumber/siginfo pointer... */ regs->r0100 = ((unsigned long long)((unsigned long)&frame->info) << 32) - | (unsigned long long)signr; + | (unsigned long long)ksig->sig; regs->r02 = (unsigned long) &frame->uc; regs->r31 = (unsigned long) vdso->rt_signal_trampoline; pt_psp(regs) = (unsigned long) frame; - pt_set_elr(regs, (unsigned long)ka->sa.sa_handler); + pt_set_elr(regs, (unsigned long)ksig->ka.sa.sa_handler); return 0; - -sigsegv: - force_sigsegv(signr, current); - return -EFAULT; } /* * Setup invocation of signal handler */ -static void handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka, - struct pt_regs *regs) +static void handle_signal(struct ksignal *ksig, struct pt_regs *regs) { + int ret; + /* * If we're handling a signal that aborted a system call, * set up the error return value before adding the signal @@ -173,7 +162,7 @@ static void handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka, regs->r00 = -EINTR; break; case -ERESTARTSYS: - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { regs->r00 = -EINTR; break; } @@ -193,11 +182,9 @@ static void handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka, * only set up the rt_frame flavor. */ /* If there was an error on setup, no signal was delivered. */ - if (setup_rt_frame(sig, ka, info, sigmask_to_save(), regs) < 0) - return; + ret = setup_rt_frame(ksig, sigmask_to_save(), regs); - signal_delivered(sig, info, ka, regs, - test_thread_flag(TIF_SINGLESTEP)); + signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP)); } /* @@ -205,17 +192,13 @@ static void handle_signal(int sig, siginfo_t *info, struct k_sigaction *ka, */ void do_signal(struct pt_regs *regs) { - struct k_sigaction sigact; - siginfo_t info; - int signo; + struct ksignal ksig; if (!user_mode(regs)) return; - signo = get_signal_to_deliver(&info, &sigact, regs, NULL); - - if (signo > 0) { - handle_signal(signo, &info, &sigact, regs); + if (get_signal(&ksig)) { + handle_signal(&ksig, regs); return; } diff --git a/arch/ia64/include/asm/unistd.h b/arch/ia64/include/asm/unistd.h index fb13dc5e8f8c..4254f5d3218c 100644 --- a/arch/ia64/include/asm/unistd.h +++ b/arch/ia64/include/asm/unistd.h @@ -11,7 +11,7 @@ -#define NR_syscalls 315 /* length of syscall table */ +#define NR_syscalls 316 /* length of syscall table */ /* * The following defines stop scripts/checksyscalls.sh from complaining about diff --git a/arch/ia64/include/uapi/asm/unistd.h b/arch/ia64/include/uapi/asm/unistd.h index 7de0a2d65da4..99801c3be914 100644 --- a/arch/ia64/include/uapi/asm/unistd.h +++ b/arch/ia64/include/uapi/asm/unistd.h @@ -328,5 +328,6 @@ #define __NR_sched_setattr 1336 #define __NR_sched_getattr 1337 #define __NR_renameat2 1338 +#define __NR_getrandom 1339 #endif /* _UAPI_ASM_IA64_UNISTD_H */ diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S index ba3d03503e84..4c13837a9269 100644 --- a/arch/ia64/kernel/entry.S +++ b/arch/ia64/kernel/entry.S @@ -1776,6 +1776,7 @@ sys_call_table: data8 sys_sched_setattr data8 sys_sched_getattr data8 sys_renameat2 + data8 sys_getrandom .org sys_call_table + 8*NR_syscalls // guard against failures to increase NR_syscalls #endif /* __IA64_ASM_PARAVIRTUALIZED_NATIVE */ diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c index 33cab9a8adff..6d92170be457 100644 --- a/arch/ia64/kernel/signal.c +++ b/arch/ia64/kernel/signal.c @@ -309,12 +309,11 @@ force_sigsegv_info (int sig, void __user *addr) si.si_uid = from_kuid_munged(current_user_ns(), current_uid()); si.si_addr = addr; force_sig_info(SIGSEGV, &si, current); - return 0; + return 1; } static long -setup_frame (int sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set, - struct sigscratch *scr) +setup_frame(struct ksignal *ksig, sigset_t *set, struct sigscratch *scr) { extern char __kernel_sigtramp[]; unsigned long tramp_addr, new_rbs = 0, new_sp; @@ -323,7 +322,7 @@ setup_frame (int sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set, new_sp = scr->pt.r12; tramp_addr = (unsigned long) __kernel_sigtramp; - if (ka->sa.sa_flags & SA_ONSTACK) { + if (ksig->ka.sa.sa_flags & SA_ONSTACK) { int onstack = sas_ss_flags(new_sp); if (onstack == 0) { @@ -347,29 +346,29 @@ setup_frame (int sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set, */ check_sp = (new_sp - sizeof(*frame)) & -STACK_ALIGN; if (!likely(on_sig_stack(check_sp))) - return force_sigsegv_info(sig, (void __user *) + return force_sigsegv_info(ksig->sig, (void __user *) check_sp); } } frame = (void __user *) ((new_sp - sizeof(*frame)) & -STACK_ALIGN); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - return force_sigsegv_info(sig, frame); + return force_sigsegv_info(ksig->sig, frame); - err = __put_user(sig, &frame->arg0); + err = __put_user(ksig->sig, &frame->arg0); err |= __put_user(&frame->info, &frame->arg1); err |= __put_user(&frame->sc, &frame->arg2); err |= __put_user(new_rbs, &frame->sc.sc_rbs_base); err |= __put_user(0, &frame->sc.sc_loadrs); /* initialize to zero */ - err |= __put_user(ka->sa.sa_handler, &frame->handler); + err |= __put_user(ksig->ka.sa.sa_handler, &frame->handler); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); err |= __save_altstack(&frame->sc.sc_stack, scr->pt.r12); err |= setup_sigcontext(&frame->sc, set, scr); if (unlikely(err)) - return force_sigsegv_info(sig, frame); + return force_sigsegv_info(ksig->sig, frame); scr->pt.r12 = (unsigned long) frame - 16; /* new stack pointer */ scr->pt.ar_fpsr = FPSR_DEFAULT; /* reset fpsr for signal handler */ @@ -394,22 +393,20 @@ setup_frame (int sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set, #if DEBUG_SIG printk("SIG deliver (%s:%d): sig=%d sp=%lx ip=%lx handler=%p\n", - current->comm, current->pid, sig, scr->pt.r12, frame->sc.sc_ip, frame->handler); + current->comm, current->pid, ksig->sig, scr->pt.r12, frame->sc.sc_ip, frame->handler); #endif - return 1; + return 0; } static long -handle_signal (unsigned long sig, struct k_sigaction *ka, siginfo_t *info, - struct sigscratch *scr) +handle_signal (struct ksignal *ksig, struct sigscratch *scr) { - if (!setup_frame(sig, ka, info, sigmask_to_save(), scr)) - return 0; + int ret = setup_frame(ksig, sigmask_to_save(), scr); - signal_delivered(sig, info, ka, &scr->pt, - test_thread_flag(TIF_SINGLESTEP)); + if (!ret) + signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP)); - return 1; + return ret; } /* @@ -419,17 +416,16 @@ handle_signal (unsigned long sig, struct k_sigaction *ka, siginfo_t *info, void ia64_do_signal (struct sigscratch *scr, long in_syscall) { - struct k_sigaction ka; - siginfo_t info; long restart = in_syscall; long errno = scr->pt.r8; + struct ksignal ksig; /* * This only loops in the rare cases of handle_signal() failing, in which case we * need to push through a forced SIGSEGV. */ while (1) { - int signr = get_signal_to_deliver(&info, &ka, &scr->pt, NULL); + get_signal(&ksig); /* * get_signal_to_deliver() may have run a debugger (via notify_parent()) @@ -446,7 +442,7 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall) */ restart = 0; - if (signr <= 0) + if (ksig.sig <= 0) break; if (unlikely(restart)) { @@ -458,7 +454,7 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall) break; case ERESTARTSYS: - if ((ka.sa.sa_flags & SA_RESTART) == 0) { + if ((ksig.ka.sa.sa_flags & SA_RESTART) == 0) { scr->pt.r8 = EINTR; /* note: scr->pt.r10 is already -1 */ break; @@ -473,7 +469,7 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall) * Whee! Actually deliver the signal. If the delivery failed, we need to * continue to iterate in this loop so we can deliver the SIGSEGV... */ - if (handle_signal(signr, &ka, &info, scr)) + if (handle_signal(&ksig, scr)) return; } diff --git a/arch/m32r/kernel/signal.c b/arch/m32r/kernel/signal.c index d503568cb753..95408b8f130a 100644 --- a/arch/m32r/kernel/signal.c +++ b/arch/m32r/kernel/signal.c @@ -162,28 +162,22 @@ setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, * Determine which stack to use.. */ static inline void __user * -get_sigframe(struct k_sigaction *ka, unsigned long sp, size_t frame_size) +get_sigframe(struct ksignal *ksig, unsigned long sp, size_t frame_size) { - /* This is the X/Open sanctioned signal stack switching. */ - if (ka->sa.sa_flags & SA_ONSTACK) { - if (sas_ss_flags(sp) == 0) - sp = current->sas_ss_sp + current->sas_ss_size; - } - - return (void __user *)((sp - frame_size) & -8ul); + return (void __user *)((sigsp(sp, ksig) - frame_size) & -8ul); } -static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { struct rt_sigframe __user *frame; int err = 0; - int signal; + int signal, sig = ksig->sig; - frame = get_sigframe(ka, regs->spu, sizeof(*frame)); + frame = get_sigframe(ksig, regs->spu, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; signal = current_thread_info()->exec_domain && current_thread_info()->exec_domain->signal_invmap @@ -193,13 +187,13 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= __put_user(signal, &frame->sig); if (err) - goto give_sigsegv; + return -EFAULT; err |= __put_user(&frame->info, &frame->pinfo); err |= __put_user(&frame->uc, &frame->puc); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); if (err) - goto give_sigsegv; + return -EFAULT; /* Create the ucontext. */ err |= __put_user(0, &frame->uc.uc_flags); @@ -208,17 +202,17 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]); err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); if (err) - goto give_sigsegv; + return -EFAULT; /* Set up to return from userspace. */ - regs->lr = (unsigned long)ka->sa.sa_restorer; + regs->lr = (unsigned long)ksig->ka.sa.sa_restorer; /* Set up registers for signal handler */ regs->spu = (unsigned long)frame; regs->r0 = signal; /* Arg for signal handler */ regs->r1 = (unsigned long)&frame->info; regs->r2 = (unsigned long)&frame->uc; - regs->bpc = (unsigned long)ka->sa.sa_handler; + regs->bpc = (unsigned long)ksig->ka.sa.sa_handler; set_fs(USER_DS); @@ -228,10 +222,6 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, #endif return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } static int prev_insn(struct pt_regs *regs) @@ -252,9 +242,10 @@ static int prev_insn(struct pt_regs *regs) */ static void -handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, - struct pt_regs *regs) +handle_signal(struct ksignal *ksig, struct pt_regs *regs) { + int ret; + /* Are we from a system call? */ if (regs->syscall_nr >= 0) { /* If so, check system call restarting.. */ @@ -265,7 +256,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, break; case -ERESTARTSYS: - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { regs->r0 = -EINTR; break; } @@ -278,10 +269,9 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, } /* Set up the stack frame */ - if (setup_rt_frame(sig, ka, info, sigmask_to_save(), regs)) - return; + ret = setup_rt_frame(ksig, sigmask_to_save(), regs); - signal_delivered(sig, info, ka, regs, 0); + signal_setup_done(ret, ksig, 0); } /* @@ -291,9 +281,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, */ static void do_signal(struct pt_regs *regs) { - siginfo_t info; - int signr; - struct k_sigaction ka; + struct ksignal ksig; /* * We want the common case to go fast, which @@ -304,8 +292,7 @@ static void do_signal(struct pt_regs *regs) if (!user_mode(regs)) return; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { + if (get_signal(&ksig)) { /* Re-enable any watchpoints before delivering the * signal to user space. The processor register will * have been cleared if the watchpoint triggered @@ -313,7 +300,7 @@ static void do_signal(struct pt_regs *regs) */ /* Whee! Actually deliver the signal. */ - handle_signal(signr, &ka, &info, regs); + handle_signal(&ksig, regs); return; } diff --git a/arch/m68k/kernel/signal.c b/arch/m68k/kernel/signal.c index 57fd286e4b0b..967a8b7e1527 100644 --- a/arch/m68k/kernel/signal.c +++ b/arch/m68k/kernel/signal.c @@ -835,38 +835,30 @@ static inline int rt_setup_ucontext(struct ucontext __user *uc, struct pt_regs * } static inline void __user * -get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size) +get_sigframe(struct ksignal *ksig, size_t frame_size) { - unsigned long usp; - - /* Default to using normal stack. */ - usp = rdusp(); + unsigned long usp = sigsp(rdusp(), ksig); - /* This is the X/Open sanctioned signal stack switching. */ - if (ka->sa.sa_flags & SA_ONSTACK) { - if (!sas_ss_flags(usp)) - usp = current->sas_ss_sp + current->sas_ss_size; - } return (void __user *)((usp - frame_size) & -8UL); } -static int setup_frame (int sig, struct k_sigaction *ka, - sigset_t *set, struct pt_regs *regs) +static int setup_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { struct sigframe __user *frame; int fsize = frame_extra_sizes(regs->format); struct sigcontext context; - int err = 0; + int err = 0, sig = ksig->sig; if (fsize < 0) { #ifdef DEBUG printk ("setup_frame: Unknown frame format %#x\n", regs->format); #endif - goto give_sigsegv; + return -EFAULT; } - frame = get_sigframe(ka, regs, sizeof(*frame) + fsize); + frame = get_sigframe(ksig, sizeof(*frame) + fsize); if (fsize) err |= copy_to_user (frame + 1, regs + 1, fsize); @@ -899,7 +891,7 @@ static int setup_frame (int sig, struct k_sigaction *ka, #endif if (err) - goto give_sigsegv; + return -EFAULT; push_cache ((unsigned long) &frame->retcode); @@ -908,7 +900,7 @@ static int setup_frame (int sig, struct k_sigaction *ka, * to destroy is successfully copied to sigframe. */ wrusp ((unsigned long) frame); - regs->pc = (unsigned long) ka->sa.sa_handler; + regs->pc = (unsigned long) ksig->ka.sa.sa_handler; adjustformat(regs); /* @@ -934,28 +926,24 @@ static int setup_frame (int sig, struct k_sigaction *ka, tregs->sr = regs->sr; } return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return err; } -static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { struct rt_sigframe __user *frame; int fsize = frame_extra_sizes(regs->format); - int err = 0; + int err = 0, sig = ksig->sig; if (fsize < 0) { #ifdef DEBUG printk ("setup_frame: Unknown frame format %#x\n", regs->format); #endif - goto give_sigsegv; + return -EFAULT; } - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, sizeof(*frame)); if (fsize) err |= copy_to_user (&frame->uc.uc_extra, regs + 1, fsize); @@ -968,7 +956,7 @@ static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info, &frame->sig); err |= __put_user(&frame->info, &frame->pinfo); err |= __put_user(&frame->uc, &frame->puc); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); /* Create the ucontext. */ err |= __put_user(0, &frame->uc.uc_flags); @@ -996,7 +984,7 @@ static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info, #endif /* CONFIG_MMU */ if (err) - goto give_sigsegv; + return -EFAULT; push_cache ((unsigned long) &frame->retcode); @@ -1005,7 +993,7 @@ static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info, * to destroy is successfully copied to sigframe. */ wrusp ((unsigned long) frame); - regs->pc = (unsigned long) ka->sa.sa_handler; + regs->pc = (unsigned long) ksig->ka.sa.sa_handler; adjustformat(regs); /* @@ -1031,10 +1019,6 @@ static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info, tregs->sr = regs->sr; } return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return err; } static inline void @@ -1074,26 +1058,22 @@ handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler) * OK, we're invoking a handler */ static void -handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info, - struct pt_regs *regs) +handle_signal(struct ksignal *ksig, struct pt_regs *regs) { sigset_t *oldset = sigmask_to_save(); int err; /* are we from a system call? */ if (regs->orig_d0 >= 0) /* If so, check system call restarting.. */ - handle_restart(regs, ka, 1); + handle_restart(regs, &ksig->ka, 1); /* set up the stack frame */ - if (ka->sa.sa_flags & SA_SIGINFO) - err = setup_rt_frame(sig, ka, info, oldset, regs); + if (ksig->ka.sa.sa_flags & SA_SIGINFO) + err = setup_rt_frame(ksig, oldset, regs); else - err = setup_frame(sig, ka, oldset, regs); - - if (err) - return; + err = setup_frame(ksig, oldset, regs); - signal_delivered(sig, info, ka, regs, 0); + signal_setup_done(err, ksig, 0); if (test_thread_flag(TIF_DELAYED_TRACE)) { regs->sr &= ~0x8000; @@ -1108,16 +1088,13 @@ handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info, */ static void do_signal(struct pt_regs *regs) { - siginfo_t info; - struct k_sigaction ka; - int signr; + struct ksignal ksig; current->thread.esp0 = (unsigned long) regs; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { + if (get_signal(&ksig)) { /* Whee! Actually deliver the signal. */ - handle_signal(signr, &ka, &info, regs); + handle_signal(&ksig, regs); return; } diff --git a/arch/metag/kernel/signal.c b/arch/metag/kernel/signal.c index b9e4a82d2bd4..0d100d5c1407 100644 --- a/arch/metag/kernel/signal.c +++ b/arch/metag/kernel/signal.c @@ -140,13 +140,9 @@ static int setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, /* * Determine which stack to use.. */ -static void __user *get_sigframe(struct k_sigaction *ka, unsigned long sp, - size_t frame_size) +static void __user *get_sigframe(struct ksignal *ksig, unsigned long sp) { - /* Meta stacks grows upwards */ - if ((ka->sa.sa_flags & SA_ONSTACK) && (sas_ss_flags(sp) == 0)) - sp = current->sas_ss_sp; - + sp = sigsp(sp, ksig); sp = (sp + 7) & ~7; /* 8byte align stack */ return (void __user *)sp; @@ -159,7 +155,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, int err; unsigned long code; - frame = get_sigframe(&ksig->ka, regs->REG_SP, sizeof(*frame)); + frame = get_sigframe(ksig, regs->REG_SP); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) return -EFAULT; diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c index 49a07a4d76d0..8955a3829cf0 100644 --- a/arch/microblaze/kernel/signal.c +++ b/arch/microblaze/kernel/signal.c @@ -145,22 +145,19 @@ setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, * Determine which stack to use.. */ static inline void __user * -get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size) +get_sigframe(struct ksignal *ksig, struct pt_regs *regs, size_t frame_size) { /* Default to using normal stack */ - unsigned long sp = regs->r1; - - if ((ka->sa.sa_flags & SA_ONSTACK) != 0 && !on_sig_stack(sp)) - sp = current->sas_ss_sp + current->sas_ss_size; + unsigned long sp = sigsp(regs->r1, ksig); return (void __user *)((sp - frame_size) & -8UL); } -static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { struct rt_sigframe __user *frame; - int err = 0; + int err = 0, sig = ksig->sig; int signal; unsigned long address = 0; #ifdef CONFIG_MMU @@ -168,10 +165,10 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, pte_t *ptep; #endif - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, regs, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; signal = current_thread_info()->exec_domain && current_thread_info()->exec_domain->signal_invmap @@ -179,8 +176,8 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, ? current_thread_info()->exec_domain->signal_invmap[sig] : sig; - if (info) - err |= copy_siginfo_to_user(&frame->info, info); + if (ksig->ka.sa.sa_flags & SA_SIGINFO) + err |= copy_siginfo_to_user(&frame->info, &ksig->info); /* Create the ucontext. */ err |= __put_user(0, &frame->uc.uc_flags); @@ -227,7 +224,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, flush_dcache_range(address, address + 8); #endif if (err) - goto give_sigsegv; + return -EFAULT; /* Set up registers for signal handler */ regs->r1 = (unsigned long) frame; @@ -237,7 +234,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, regs->r6 = (unsigned long) &frame->info; /* arg 1: siginfo */ regs->r7 = (unsigned long) &frame->uc; /* arg2: ucontext */ /* Offset to handle microblaze rtid r14, 0 */ - regs->pc = (unsigned long)ka->sa.sa_handler; + regs->pc = (unsigned long)ksig->ka.sa.sa_handler; set_fs(USER_DS); @@ -247,10 +244,6 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, #endif return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } /* Handle restarting system calls */ @@ -283,23 +276,15 @@ do_restart: */ static void -handle_signal(unsigned long sig, struct k_sigaction *ka, - siginfo_t *info, struct pt_regs *regs) +handle_signal(struct ksignal *ksig, struct pt_regs *regs) { sigset_t *oldset = sigmask_to_save(); int ret; /* Set up the stack frame */ - if (ka->sa.sa_flags & SA_SIGINFO) - ret = setup_rt_frame(sig, ka, info, oldset, regs); - else - ret = setup_rt_frame(sig, ka, NULL, oldset, regs); + ret = setup_rt_frame(ksig, oldset, regs); - if (ret) - return; - - signal_delivered(sig, info, ka, regs, - test_thread_flag(TIF_SINGLESTEP)); + signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP)); } /* @@ -313,21 +298,19 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, */ static void do_signal(struct pt_regs *regs, int in_syscall) { - siginfo_t info; - int signr; - struct k_sigaction ka; + struct ksignal ksig; + #ifdef DEBUG_SIG pr_info("do signal: %p %d\n", regs, in_syscall); pr_info("do signal2: %lx %lx %ld [%lx]\n", regs->pc, regs->r1, regs->r12, current_thread_info()->flags); #endif - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { + if (get_signal(&ksig)) { /* Whee! Actually deliver the signal. */ if (in_syscall) - handle_restart(regs, &ka, 1); - handle_signal(signr, &ka, &info, regs); + handle_restart(regs, &ksig.ka, 1); + handle_signal(&ksig, regs); return; } diff --git a/arch/mips/include/asm/abi.h b/arch/mips/include/asm/abi.h index 909bb6984866..7186bb51b89b 100644 --- a/arch/mips/include/asm/abi.h +++ b/arch/mips/include/asm/abi.h @@ -13,13 +13,11 @@ #include <asm/siginfo.h> struct mips_abi { - int (* const setup_frame)(void *sig_return, struct k_sigaction *ka, - struct pt_regs *regs, int signr, - sigset_t *set); + int (* const setup_frame)(void *sig_return, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *set); const unsigned long signal_return_offset; - int (* const setup_rt_frame)(void *sig_return, struct k_sigaction *ka, - struct pt_regs *regs, int signr, - sigset_t *set, siginfo_t *info); + int (* const setup_rt_frame)(void *sig_return, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *set); const unsigned long rt_signal_return_offset; const unsigned long restart; }; diff --git a/arch/mips/kernel/signal-common.h b/arch/mips/kernel/signal-common.h index 9c60d09e62a7..06805e09bcd3 100644 --- a/arch/mips/kernel/signal-common.h +++ b/arch/mips/kernel/signal-common.h @@ -22,7 +22,7 @@ /* * Determine which stack to use.. */ -extern void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, +extern void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs, size_t frame_size); /* Check and clear pending FPU exceptions in saved CSR */ extern int fpcsr_pending(unsigned int __user *fpcsr); diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c index 9e60d117e41e..1d57605e4615 100644 --- a/arch/mips/kernel/signal.c +++ b/arch/mips/kernel/signal.c @@ -280,7 +280,7 @@ int restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc) return err; } -void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, +void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs, size_t frame_size) { unsigned long sp; @@ -295,9 +295,7 @@ void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, */ sp -= 32; - /* This is the X/Open sanctioned signal stack switching. */ - if ((ka->sa.sa_flags & SA_ONSTACK) && (sas_ss_flags (sp) == 0)) - sp = current->sas_ss_sp + current->sas_ss_size; + sp = sigsp(sp, ksig); return (void __user *)((sp - frame_size) & (ICACHE_REFILLS_WORKAROUND_WAR ? ~(cpu_icache_line_size()-1) : ALMASK)); } @@ -428,20 +426,20 @@ badframe: } #ifdef CONFIG_TRAD_SIGNALS -static int setup_frame(void *sig_return, struct k_sigaction *ka, - struct pt_regs *regs, int signr, sigset_t *set) +static int setup_frame(void *sig_return, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *set) { struct sigframe __user *frame; int err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, regs, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame))) - goto give_sigsegv; + return -EFAULT; err |= setup_sigcontext(regs, &frame->sf_sc); err |= __copy_to_user(&frame->sf_mask, set, sizeof(*set)); if (err) - goto give_sigsegv; + return -EFAULT; /* * Arguments to signal handler: @@ -453,37 +451,32 @@ static int setup_frame(void *sig_return, struct k_sigaction *ka, * $25 and c0_epc point to the signal handler, $29 points to the * struct sigframe. */ - regs->regs[ 4] = signr; + regs->regs[ 4] = ksig->sig; regs->regs[ 5] = 0; regs->regs[ 6] = (unsigned long) &frame->sf_sc; regs->regs[29] = (unsigned long) frame; regs->regs[31] = (unsigned long) sig_return; - regs->cp0_epc = regs->regs[25] = (unsigned long) ka->sa.sa_handler; + regs->cp0_epc = regs->regs[25] = (unsigned long) ksig->ka.sa.sa_handler; DEBUGP("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%lx\n", current->comm, current->pid, frame, regs->cp0_epc, regs->regs[31]); return 0; - -give_sigsegv: - force_sigsegv(signr, current); - return -EFAULT; } #endif -static int setup_rt_frame(void *sig_return, struct k_sigaction *ka, - struct pt_regs *regs, int signr, sigset_t *set, - siginfo_t *info) +static int setup_rt_frame(void *sig_return, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *set) { struct rt_sigframe __user *frame; int err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, regs, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame))) - goto give_sigsegv; + return -EFAULT; /* Create siginfo. */ - err |= copy_siginfo_to_user(&frame->rs_info, info); + err |= copy_siginfo_to_user(&frame->rs_info, &ksig->info); /* Create the ucontext. */ err |= __put_user(0, &frame->rs_uc.uc_flags); @@ -493,7 +486,7 @@ static int setup_rt_frame(void *sig_return, struct k_sigaction *ka, err |= __copy_to_user(&frame->rs_uc.uc_sigmask, set, sizeof(*set)); if (err) - goto give_sigsegv; + return -EFAULT; /* * Arguments to signal handler: @@ -505,22 +498,18 @@ static int setup_rt_frame(void *sig_return, struct k_sigaction *ka, * $25 and c0_epc point to the signal handler, $29 points to * the struct rt_sigframe. */ - regs->regs[ 4] = signr; + regs->regs[ 4] = ksig->sig; regs->regs[ 5] = (unsigned long) &frame->rs_info; regs->regs[ 6] = (unsigned long) &frame->rs_uc; regs->regs[29] = (unsigned long) frame; regs->regs[31] = (unsigned long) sig_return; - regs->cp0_epc = regs->regs[25] = (unsigned long) ka->sa.sa_handler; + regs->cp0_epc = regs->regs[25] = (unsigned long) ksig->ka.sa.sa_handler; DEBUGP("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%lx\n", current->comm, current->pid, frame, regs->cp0_epc, regs->regs[31]); return 0; - -give_sigsegv: - force_sigsegv(signr, current); - return -EFAULT; } struct mips_abi mips_abi = { @@ -534,8 +523,7 @@ struct mips_abi mips_abi = { .restart = __NR_restart_syscall }; -static void handle_signal(unsigned long sig, siginfo_t *info, - struct k_sigaction *ka, struct pt_regs *regs) +static void handle_signal(struct ksignal *ksig, struct pt_regs *regs) { sigset_t *oldset = sigmask_to_save(); int ret; @@ -557,7 +545,7 @@ static void handle_signal(unsigned long sig, siginfo_t *info, regs->regs[2] = EINTR; break; case ERESTARTSYS: - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { regs->regs[2] = EINTR; break; } @@ -571,29 +559,23 @@ static void handle_signal(unsigned long sig, siginfo_t *info, regs->regs[0] = 0; /* Don't deal with this again. */ } - if (sig_uses_siginfo(ka)) + if (sig_uses_siginfo(&ksig->ka)) ret = abi->setup_rt_frame(vdso + abi->rt_signal_return_offset, - ka, regs, sig, oldset, info); + ksig, regs, oldset); else - ret = abi->setup_frame(vdso + abi->signal_return_offset, - ka, regs, sig, oldset); - - if (ret) - return; + ret = abi->setup_frame(vdso + abi->signal_return_offset, ksig, + regs, oldset); - signal_delivered(sig, info, ka, regs, 0); + signal_setup_done(ret, ksig, 0); } static void do_signal(struct pt_regs *regs) { - struct k_sigaction ka; - siginfo_t info; - int signr; + struct ksignal ksig; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { + if (get_signal(&ksig)) { /* Whee! Actually deliver the signal. */ - handle_signal(signr, &info, &ka, regs); + handle_signal(&ksig, regs); return; } diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c index bae2e6ee2109..d69179c0d49d 100644 --- a/arch/mips/kernel/signal32.c +++ b/arch/mips/kernel/signal32.c @@ -490,21 +490,21 @@ badframe: force_sig(SIGSEGV, current); } -static int setup_frame_32(void *sig_return, struct k_sigaction *ka, - struct pt_regs *regs, int signr, sigset_t *set) +static int setup_frame_32(void *sig_return, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *set) { struct sigframe32 __user *frame; int err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, regs, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame))) - goto give_sigsegv; + return -EFAULT; err |= setup_sigcontext32(regs, &frame->sf_sc); err |= __copy_conv_sigset_to_user(&frame->sf_mask, set); if (err) - goto give_sigsegv; + return -EFAULT; /* * Arguments to signal handler: @@ -516,37 +516,32 @@ static int setup_frame_32(void *sig_return, struct k_sigaction *ka, * $25 and c0_epc point to the signal handler, $29 points to the * struct sigframe. */ - regs->regs[ 4] = signr; + regs->regs[ 4] = ksig->sig; regs->regs[ 5] = 0; regs->regs[ 6] = (unsigned long) &frame->sf_sc; regs->regs[29] = (unsigned long) frame; regs->regs[31] = (unsigned long) sig_return; - regs->cp0_epc = regs->regs[25] = (unsigned long) ka->sa.sa_handler; + regs->cp0_epc = regs->regs[25] = (unsigned long) ksig->ka.sa.sa_handler; DEBUGP("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%lx\n", current->comm, current->pid, frame, regs->cp0_epc, regs->regs[31]); return 0; - -give_sigsegv: - force_sigsegv(signr, current); - return -EFAULT; } -static int setup_rt_frame_32(void *sig_return, struct k_sigaction *ka, - struct pt_regs *regs, int signr, sigset_t *set, - siginfo_t *info) +static int setup_rt_frame_32(void *sig_return, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *set) { struct rt_sigframe32 __user *frame; int err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, regs, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame))) - goto give_sigsegv; + return -EFAULT; /* Convert (siginfo_t -> compat_siginfo_t) and copy to user. */ - err |= copy_siginfo_to_user32(&frame->rs_info, info); + err |= copy_siginfo_to_user32(&frame->rs_info, &ksig->info); /* Create the ucontext. */ err |= __put_user(0, &frame->rs_uc.uc_flags); @@ -556,7 +551,7 @@ static int setup_rt_frame_32(void *sig_return, struct k_sigaction *ka, err |= __copy_conv_sigset_to_user(&frame->rs_uc.uc_sigmask, set); if (err) - goto give_sigsegv; + return -EFAULT; /* * Arguments to signal handler: @@ -568,22 +563,18 @@ static int setup_rt_frame_32(void *sig_return, struct k_sigaction *ka, * $25 and c0_epc point to the signal handler, $29 points to * the struct rt_sigframe32. */ - regs->regs[ 4] = signr; + regs->regs[ 4] = ksig->sig; regs->regs[ 5] = (unsigned long) &frame->rs_info; regs->regs[ 6] = (unsigned long) &frame->rs_uc; regs->regs[29] = (unsigned long) frame; regs->regs[31] = (unsigned long) sig_return; - regs->cp0_epc = regs->regs[25] = (unsigned long) ka->sa.sa_handler; + regs->cp0_epc = regs->regs[25] = (unsigned long) ksig->ka.sa.sa_handler; DEBUGP("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%lx\n", current->comm, current->pid, frame, regs->cp0_epc, regs->regs[31]); return 0; - -give_sigsegv: - force_sigsegv(signr, current); - return -EFAULT; } /* diff --git a/arch/mips/kernel/signal_n32.c b/arch/mips/kernel/signal_n32.c index b2241bb9cac1..f1d4751eead0 100644 --- a/arch/mips/kernel/signal_n32.c +++ b/arch/mips/kernel/signal_n32.c @@ -102,18 +102,18 @@ badframe: force_sig(SIGSEGV, current); } -static int setup_rt_frame_n32(void *sig_return, struct k_sigaction *ka, - struct pt_regs *regs, int signr, sigset_t *set, siginfo_t *info) +static int setup_rt_frame_n32(void *sig_return, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *set) { struct rt_sigframe_n32 __user *frame; int err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, regs, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame))) - goto give_sigsegv; + return -EFAULT; /* Create siginfo. */ - err |= copy_siginfo_to_user32(&frame->rs_info, info); + err |= copy_siginfo_to_user32(&frame->rs_info, &ksig->info); /* Create the ucontext. */ err |= __put_user(0, &frame->rs_uc.uc_flags); @@ -123,7 +123,7 @@ static int setup_rt_frame_n32(void *sig_return, struct k_sigaction *ka, err |= __copy_conv_sigset_to_user(&frame->rs_uc.uc_sigmask, set); if (err) - goto give_sigsegv; + return -EFAULT; /* * Arguments to signal handler: @@ -135,22 +135,18 @@ static int setup_rt_frame_n32(void *sig_return, struct k_sigaction *ka, * $25 and c0_epc point to the signal handler, $29 points to * the struct rt_sigframe. */ - regs->regs[ 4] = signr; + regs->regs[ 4] = ksig->sig; regs->regs[ 5] = (unsigned long) &frame->rs_info; regs->regs[ 6] = (unsigned long) &frame->rs_uc; regs->regs[29] = (unsigned long) frame; regs->regs[31] = (unsigned long) sig_return; - regs->cp0_epc = regs->regs[25] = (unsigned long) ka->sa.sa_handler; + regs->cp0_epc = regs->regs[25] = (unsigned long) ksig->ka.sa.sa_handler; DEBUGP("SIG deliver (%s:%d): sp=0x%p pc=0x%lx ra=0x%lx\n", current->comm, current->pid, frame, regs->cp0_epc, regs->regs[31]); return 0; - -give_sigsegv: - force_sigsegv(signr, current); - return -EFAULT; } struct mips_abi mips_abi_n32 = { diff --git a/arch/mn10300/kernel/signal.c b/arch/mn10300/kernel/signal.c index 9dfac5cd16e6..a6c0858592c3 100644 --- a/arch/mn10300/kernel/signal.c +++ b/arch/mn10300/kernel/signal.c @@ -186,20 +186,11 @@ static int setup_sigcontext(struct sigcontext __user *sc, /* * determine which stack to use.. */ -static inline void __user *get_sigframe(struct k_sigaction *ka, +static inline void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs, size_t frame_size) { - unsigned long sp; - - /* default to using normal stack */ - sp = regs->sp; - - /* this is the X/Open sanctioned signal stack switching. */ - if (ka->sa.sa_flags & SA_ONSTACK) { - if (sas_ss_flags(sp) == 0) - sp = current->sas_ss_sp + current->sas_ss_size; - } + unsigned long sp = sigsp(regs->sp, ksig); return (void __user *) ((sp - frame_size) & ~7UL); } @@ -207,16 +198,16 @@ static inline void __user *get_sigframe(struct k_sigaction *ka, /* * set up a normal signal frame */ -static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, +static int setup_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs) { struct sigframe __user *frame; - int rsig; + int rsig, sig = ksig->sig; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, regs, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; rsig = sig; if (sig < 32 && @@ -226,40 +217,40 @@ static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, if (__put_user(rsig, &frame->sig) < 0 || __put_user(&frame->sc, &frame->psc) < 0) - goto give_sigsegv; + return -EFAULT; if (setup_sigcontext(&frame->sc, &frame->fpuctx, regs, set->sig[0])) - goto give_sigsegv; + return -EFAULT; if (_NSIG_WORDS > 1) { if (__copy_to_user(frame->extramask, &set->sig[1], sizeof(frame->extramask))) - goto give_sigsegv; + return -EFAULT; } /* set up to return from userspace. If provided, use a stub already in * userspace */ - if (ka->sa.sa_flags & SA_RESTORER) { - if (__put_user(ka->sa.sa_restorer, &frame->pretcode)) - goto give_sigsegv; + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + if (__put_user(ksig->ka.sa.sa_restorer, &frame->pretcode)) + return -EFAULT; } else { if (__put_user((void (*)(void))frame->retcode, &frame->pretcode)) - goto give_sigsegv; + return -EFAULT; /* this is mov $,d0; syscall 0 */ if (__put_user(0x2c, (char *)(frame->retcode + 0)) || __put_user(__NR_sigreturn, (char *)(frame->retcode + 1)) || __put_user(0x00, (char *)(frame->retcode + 2)) || __put_user(0xf0, (char *)(frame->retcode + 3)) || __put_user(0xe0, (char *)(frame->retcode + 4))) - goto give_sigsegv; + return -EFAULT; flush_icache_range((unsigned long) frame->retcode, (unsigned long) frame->retcode + 5); } /* set up registers for signal handler */ regs->sp = (unsigned long) frame; - regs->pc = (unsigned long) ka->sa.sa_handler; + regs->pc = (unsigned long) ksig->ka.sa.sa_handler; regs->d0 = sig; regs->d1 = (unsigned long) &frame->sc; @@ -270,25 +261,21 @@ static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, #endif return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } /* * set up a realtime signal frame */ -static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { struct rt_sigframe __user *frame; - int rsig; + int rsig, sig = ksig->sig; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, regs, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; rsig = sig; if (sig < 32 && @@ -299,8 +286,8 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, if (__put_user(rsig, &frame->sig) || __put_user(&frame->info, &frame->pinfo) || __put_user(&frame->uc, &frame->puc) || - copy_siginfo_to_user(&frame->info, info)) - goto give_sigsegv; + copy_siginfo_to_user(&frame->info, &ksig->info)) + return -EFAULT; /* create the ucontext. */ if (__put_user(0, &frame->uc.uc_flags) || @@ -309,13 +296,14 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, setup_sigcontext(&frame->uc.uc_mcontext, &frame->fpuctx, regs, set->sig[0]) || __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set))) - goto give_sigsegv; + return -EFAULT; /* set up to return from userspace. If provided, use a stub already in * userspace */ - if (ka->sa.sa_flags & SA_RESTORER) { - if (__put_user(ka->sa.sa_restorer, &frame->pretcode)) - goto give_sigsegv; + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + if (__put_user(ksig->ka.sa.sa_restorer, &frame->pretcode)) + return -EFAULT; + } else { if (__put_user((void(*)(void))frame->retcode, &frame->pretcode) || @@ -326,7 +314,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, __put_user(0x00, (char *)(frame->retcode + 2)) || __put_user(0xf0, (char *)(frame->retcode + 3)) || __put_user(0xe0, (char *)(frame->retcode + 4))) - goto give_sigsegv; + return -EFAULT; flush_icache_range((u_long) frame->retcode, (u_long) frame->retcode + 5); @@ -334,7 +322,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, /* Set up registers for signal handler */ regs->sp = (unsigned long) frame; - regs->pc = (unsigned long) ka->sa.sa_handler; + regs->pc = (unsigned long) ksig->ka.sa.sa_handler; regs->d0 = sig; regs->d1 = (long) &frame->info; @@ -345,10 +333,6 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, #endif return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } static inline void stepback(struct pt_regs *regs) @@ -360,9 +344,7 @@ static inline void stepback(struct pt_regs *regs) /* * handle the actual delivery of a signal to userspace */ -static int handle_signal(int sig, - siginfo_t *info, struct k_sigaction *ka, - struct pt_regs *regs) +static int handle_signal(struct ksignal *ksig, struct pt_regs *regs) { sigset_t *oldset = sigmask_to_save(); int ret; @@ -377,7 +359,7 @@ static int handle_signal(int sig, break; case -ERESTARTSYS: - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { regs->d0 = -EINTR; break; } @@ -390,15 +372,12 @@ static int handle_signal(int sig, } /* Set up the stack frame */ - if (ka->sa.sa_flags & SA_SIGINFO) - ret = setup_rt_frame(sig, ka, info, oldset, regs); + if (ksig->ka.sa.sa_flags & SA_SIGINFO) + ret = setup_rt_frame(ksig, oldset, regs); else - ret = setup_frame(sig, ka, oldset, regs); - if (ret) - return ret; + ret = setup_frame(ksig, oldset, regs); - signal_delivered(sig, info, ka, regs, - test_thread_flag(TIF_SINGLESTEP)); + signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP)); return 0; } @@ -407,15 +386,10 @@ static int handle_signal(int sig, */ static void do_signal(struct pt_regs *regs) { - struct k_sigaction ka; - siginfo_t info; - int signr; - - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { - if (handle_signal(signr, &info, &ka, regs) == 0) { - } + struct ksignal ksig; + if (get_signal(&ksig)) { + handle_signal(&ksig, regs); return; } diff --git a/arch/openrisc/kernel/signal.c b/arch/openrisc/kernel/signal.c index 66775bc07a8e..7d1b8235bf90 100644 --- a/arch/openrisc/kernel/signal.c +++ b/arch/openrisc/kernel/signal.c @@ -132,30 +132,16 @@ static inline unsigned long align_sigframe(unsigned long sp) * or the alternate stack. */ -static inline void __user *get_sigframe(struct k_sigaction *ka, +static inline void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs, size_t frame_size) { unsigned long sp = regs->sp; - int onsigstack = on_sig_stack(sp); /* redzone */ sp -= STACK_FRAME_OVERHEAD; - - /* This is the X/Open sanctioned signal stack switching. */ - if ((ka->sa.sa_flags & SA_ONSTACK) && !onsigstack) { - if (current->sas_ss_size) - sp = current->sas_ss_sp + current->sas_ss_size; - } - + sp = sigsp(sp, ksig); sp = align_sigframe(sp - frame_size); - /* - * If we are on the alternate signal stack and would overflow it, don't. - * Return an always-bogus address instead so we will die with SIGSEGV. - */ - if (onsigstack && !likely(on_sig_stack(sp))) - return (void __user *)-1L; - return (void __user *)sp; } @@ -173,7 +159,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, unsigned long return_ip; int err = 0; - frame = get_sigframe(&ksig->ka, regs, sizeof(*frame)); + frame = get_sigframe(ksig, regs, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) return -EFAULT; diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c index 1cba8f29bb49..012d4fa63d97 100644 --- a/arch/parisc/kernel/signal.c +++ b/arch/parisc/kernel/signal.c @@ -227,8 +227,8 @@ setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, int in_sysc } static long -setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs, int in_syscall) +setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs, + int in_syscall) { struct rt_sigframe __user *frame; unsigned long rp, usp; @@ -241,10 +241,10 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, usp = (regs->gr[30] & ~(0x01UL)); /*FIXME: frame_size parameter is unused, remove it. */ - frame = get_sigframe(ka, usp, sizeof(*frame)); + frame = get_sigframe(&ksig->ka, usp, sizeof(*frame)); DBG(1,"SETUP_RT_FRAME: START\n"); - DBG(1,"setup_rt_frame: frame %p info %p\n", frame, info); + DBG(1,"setup_rt_frame: frame %p info %p\n", frame, ksig->info); #ifdef CONFIG_64BIT @@ -253,7 +253,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, if (is_compat_task()) { DBG(1,"setup_rt_frame: frame->info = 0x%p\n", &compat_frame->info); - err |= copy_siginfo_to_user32(&compat_frame->info, info); + err |= copy_siginfo_to_user32(&compat_frame->info, &ksig->info); err |= __compat_save_altstack( &compat_frame->uc.uc_stack, regs->gr[30]); DBG(1,"setup_rt_frame: frame->uc = 0x%p\n", &compat_frame->uc); DBG(1,"setup_rt_frame: frame->uc.uc_mcontext = 0x%p\n", &compat_frame->uc.uc_mcontext); @@ -265,7 +265,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, #endif { DBG(1,"setup_rt_frame: frame->info = 0x%p\n", &frame->info); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); err |= __save_altstack(&frame->uc.uc_stack, regs->gr[30]); DBG(1,"setup_rt_frame: frame->uc = 0x%p\n", &frame->uc); DBG(1,"setup_rt_frame: frame->uc.uc_mcontext = 0x%p\n", &frame->uc.uc_mcontext); @@ -275,7 +275,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, } if (err) - goto give_sigsegv; + return -EFAULT; /* Set up to return from userspace. If provided, use a stub already in userspace. The first words of tramp are used to @@ -312,9 +312,9 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, rp = (unsigned long) &frame->tramp[SIGRESTARTBLOCK_TRAMP]; if (err) - goto give_sigsegv; + return -EFAULT; - haddr = A(ka->sa.sa_handler); + haddr = A(ksig->ka.sa.sa_handler); /* The sa_handler may be a pointer to a function descriptor */ #ifdef CONFIG_64BIT if (is_compat_task()) { @@ -326,7 +326,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err = __copy_from_user(&fdesc, ufdesc, sizeof(fdesc)); if (err) - goto give_sigsegv; + return -EFAULT; haddr = fdesc.addr; regs->gr[19] = fdesc.gp; @@ -339,7 +339,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err = __copy_from_user(&fdesc, ufdesc, sizeof(fdesc)); if (err) - goto give_sigsegv; + return -EFAULT; haddr = fdesc.addr; regs->gr[19] = fdesc.gp; @@ -386,7 +386,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, } regs->gr[2] = rp; /* userland return pointer */ - regs->gr[26] = sig; /* signal number */ + regs->gr[26] = ksig->sig; /* signal number */ #ifdef CONFIG_64BIT if (is_compat_task()) { @@ -410,11 +410,6 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, current->comm, current->pid, frame, regs->gr[30], regs->iaoq[0], regs->iaoq[1], rp); - return 1; - -give_sigsegv: - DBG(1,"setup_rt_frame: sending SIGSEGV\n"); - force_sigsegv(sig, current); return 0; } @@ -423,20 +418,19 @@ give_sigsegv: */ static void -handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, - struct pt_regs *regs, int in_syscall) +handle_signal(struct ksignal *ksig, struct pt_regs *regs, int in_syscall) { + int ret; sigset_t *oldset = sigmask_to_save(); + DBG(1,"handle_signal: sig=%ld, ka=%p, info=%p, oldset=%p, regs=%p\n", - sig, ka, info, oldset, regs); + ksig->sig, ksig->ka, ksig->info, oldset, regs); /* Set up the stack frame */ - if (!setup_rt_frame(sig, ka, info, oldset, regs, in_syscall)) - return; + ret = setup_rt_frame(ksig, oldset, regs, in_syscall); - signal_delivered(sig, info, ka, regs, - test_thread_flag(TIF_SINGLESTEP) || - test_thread_flag(TIF_BLOCKSTEP)); + signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP) || + test_thread_flag(TIF_BLOCKSTEP)); DBG(1,KERN_DEBUG "do_signal: Exit (success), regs->gr[28] = %ld\n", regs->gr[28]); @@ -544,22 +538,18 @@ insert_restart_trampoline(struct pt_regs *regs) asmlinkage void do_signal(struct pt_regs *regs, long in_syscall) { - siginfo_t info; - struct k_sigaction ka; - int signr; + struct ksignal ksig; DBG(1,"\ndo_signal: regs=0x%p, sr7 %#lx, in_syscall=%d\n", regs, regs->sr[7], in_syscall); - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - DBG(3,"do_signal: signr = %d, regs->gr[28] = %ld\n", signr, regs->gr[28]); - - if (signr > 0) { + if (get_signal(&ksig)) { + DBG(3,"do_signal: signr = %d, regs->gr[28] = %ld\n", signr, regs->gr[28]); /* Restart a system call if necessary. */ if (in_syscall) - syscall_restart(regs, &ka); + syscall_restart(regs, &ksig.ka); - handle_signal(signr, &info, &ka, regs, in_syscall); + handle_signal(&ksig, regs, in_syscall); return; } diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c index 1c794cef2883..cf8c7e4e0b21 100644 --- a/arch/powerpc/kernel/signal.c +++ b/arch/powerpc/kernel/signal.c @@ -31,20 +31,14 @@ int show_unhandled_signals = 1; /* * Allocate space for the signal frame */ -void __user * get_sigframe(struct k_sigaction *ka, unsigned long sp, +void __user *get_sigframe(struct ksignal *ksig, unsigned long sp, size_t frame_size, int is_32) { unsigned long oldsp, newsp; /* Default to using normal stack */ oldsp = get_clean_sp(sp, is_32); - - /* Check for alt stack */ - if ((ka->sa.sa_flags & SA_ONSTACK) && - current->sas_ss_size && !on_sig_stack(oldsp)) - oldsp = (current->sas_ss_sp + current->sas_ss_size); - - /* Get aligned frame */ + oldsp = sigsp(oldsp, ksig); newsp = (oldsp - frame_size) & ~0xFUL; /* Check access */ @@ -105,25 +99,23 @@ static void check_syscall_restart(struct pt_regs *regs, struct k_sigaction *ka, } } -static int do_signal(struct pt_regs *regs) +static void do_signal(struct pt_regs *regs) { sigset_t *oldset = sigmask_to_save(); - siginfo_t info; - int signr; - struct k_sigaction ka; + struct ksignal ksig; int ret; int is32 = is_32bit_task(); - signr = get_signal_to_deliver(&info, &ka, regs, NULL); + get_signal(&ksig); /* Is there any syscall restart business here ? */ - check_syscall_restart(regs, &ka, signr > 0); + check_syscall_restart(regs, &ksig.ka, ksig.sig > 0); - if (signr <= 0) { + if (ksig.sig <= 0) { /* No signal to deliver -- put the saved sigmask back */ restore_saved_sigmask(); regs->trap = 0; - return 0; /* no signals delivered */ + return; /* no signals delivered */ } #ifndef CONFIG_PPC_ADV_DEBUG_REGS @@ -140,23 +132,16 @@ static int do_signal(struct pt_regs *regs) thread_change_pc(current, regs); if (is32) { - if (ka.sa.sa_flags & SA_SIGINFO) - ret = handle_rt_signal32(signr, &ka, &info, oldset, - regs); + if (ksig.ka.sa.sa_flags & SA_SIGINFO) + ret = handle_rt_signal32(&ksig, oldset, regs); else - ret = handle_signal32(signr, &ka, &info, oldset, - regs); + ret = handle_signal32(&ksig, oldset, regs); } else { - ret = handle_rt_signal64(signr, &ka, &info, oldset, regs); + ret = handle_rt_signal64(&ksig, oldset, regs); } regs->trap = 0; - if (ret) { - signal_delivered(signr, &info, &ka, regs, - test_thread_flag(TIF_SINGLESTEP)); - } - - return ret; + signal_setup_done(ret, &ksig, test_thread_flag(TIF_SINGLESTEP)); } void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags) diff --git a/arch/powerpc/kernel/signal.h b/arch/powerpc/kernel/signal.h index c69b9aeb9f23..51b274199dd9 100644 --- a/arch/powerpc/kernel/signal.h +++ b/arch/powerpc/kernel/signal.h @@ -12,15 +12,13 @@ extern void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags); -extern void __user * get_sigframe(struct k_sigaction *ka, unsigned long sp, +extern void __user *get_sigframe(struct ksignal *ksig, unsigned long sp, size_t frame_size, int is_32); -extern int handle_signal32(unsigned long sig, struct k_sigaction *ka, - siginfo_t *info, sigset_t *oldset, +extern int handle_signal32(struct ksignal *ksig, sigset_t *oldset, struct pt_regs *regs); -extern int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka, - siginfo_t *info, sigset_t *oldset, +extern int handle_rt_signal32(struct ksignal *ksig, sigset_t *oldset, struct pt_regs *regs); extern unsigned long copy_fpr_to_user(void __user *to, @@ -44,14 +42,12 @@ extern unsigned long copy_transact_vsx_from_user(struct task_struct *task, #ifdef CONFIG_PPC64 -extern int handle_rt_signal64(int signr, struct k_sigaction *ka, - siginfo_t *info, sigset_t *set, +extern int handle_rt_signal64(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs); #else /* CONFIG_PPC64 */ -static inline int handle_rt_signal64(int signr, struct k_sigaction *ka, - siginfo_t *info, sigset_t *set, +static inline int handle_rt_signal64(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs) { return -EFAULT; diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c index 1bc5a1755ed4..b171001698ff 100644 --- a/arch/powerpc/kernel/signal_32.c +++ b/arch/powerpc/kernel/signal_32.c @@ -981,9 +981,8 @@ int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from) * Set up a signal frame for a "real-time" signal handler * (one which gets siginfo). */ -int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka, - siginfo_t *info, sigset_t *oldset, - struct pt_regs *regs) +int handle_rt_signal32(struct ksignal *ksig, sigset_t *oldset, + struct pt_regs *regs) { struct rt_sigframe __user *rt_sf; struct mcontext __user *frame; @@ -995,13 +994,13 @@ int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka, /* Set up Signal Frame */ /* Put a Real Time Context onto stack */ - rt_sf = get_sigframe(ka, get_tm_stackpointer(regs), sizeof(*rt_sf), 1); + rt_sf = get_sigframe(ksig, get_tm_stackpointer(regs), sizeof(*rt_sf), 1); addr = rt_sf; if (unlikely(rt_sf == NULL)) goto badframe; /* Put the siginfo & fill in most of the ucontext */ - if (copy_siginfo_to_user(&rt_sf->info, info) + if (copy_siginfo_to_user(&rt_sf->info, &ksig->info) || __put_user(0, &rt_sf->uc.uc_flags) || __save_altstack(&rt_sf->uc.uc_stack, regs->gpr[1]) || __put_user(to_user_ptr(&rt_sf->uc.uc_mcontext), @@ -1051,15 +1050,15 @@ int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka, /* Fill registers for signal handler */ regs->gpr[1] = newsp; - regs->gpr[3] = sig; + regs->gpr[3] = ksig->sig; regs->gpr[4] = (unsigned long) &rt_sf->info; regs->gpr[5] = (unsigned long) &rt_sf->uc; regs->gpr[6] = (unsigned long) rt_sf; - regs->nip = (unsigned long) ka->sa.sa_handler; + regs->nip = (unsigned long) ksig->ka.sa.sa_handler; /* enter the signal handler in native-endian mode */ regs->msr &= ~MSR_LE; regs->msr |= (MSR_KERNEL & MSR_LE); - return 1; + return 0; badframe: if (show_unhandled_signals) @@ -1069,8 +1068,7 @@ badframe: current->comm, current->pid, addr, regs->nip, regs->link); - force_sigsegv(sig, current); - return 0; + return 1; } static int do_setcontext(struct ucontext __user *ucp, struct pt_regs *regs, int sig) @@ -1409,8 +1407,7 @@ int sys_debug_setcontext(struct ucontext __user *ctx, /* * OK, we're invoking a handler */ -int handle_signal32(unsigned long sig, struct k_sigaction *ka, - siginfo_t *info, sigset_t *oldset, struct pt_regs *regs) +int handle_signal32(struct ksignal *ksig, sigset_t *oldset, struct pt_regs *regs) { struct sigcontext __user *sc; struct sigframe __user *frame; @@ -1420,7 +1417,7 @@ int handle_signal32(unsigned long sig, struct k_sigaction *ka, unsigned long tramp; /* Set up Signal Frame */ - frame = get_sigframe(ka, get_tm_stackpointer(regs), sizeof(*frame), 1); + frame = get_sigframe(ksig, get_tm_stackpointer(regs), sizeof(*frame), 1); if (unlikely(frame == NULL)) goto badframe; sc = (struct sigcontext __user *) &frame->sctx; @@ -1428,7 +1425,7 @@ int handle_signal32(unsigned long sig, struct k_sigaction *ka, #if _NSIG != 64 #error "Please adjust handle_signal()" #endif - if (__put_user(to_user_ptr(ka->sa.sa_handler), &sc->handler) + if (__put_user(to_user_ptr(ksig->ka.sa.sa_handler), &sc->handler) || __put_user(oldset->sig[0], &sc->oldmask) #ifdef CONFIG_PPC64 || __put_user((oldset->sig[0] >> 32), &sc->_unused[3]) @@ -1436,7 +1433,7 @@ int handle_signal32(unsigned long sig, struct k_sigaction *ka, || __put_user(oldset->sig[1], &sc->_unused[3]) #endif || __put_user(to_user_ptr(&frame->mctx), &sc->regs) - || __put_user(sig, &sc->signal)) + || __put_user(ksig->sig, &sc->signal)) goto badframe; if (vdso32_sigtramp && current->mm->context.vdso_base) { @@ -1471,12 +1468,12 @@ int handle_signal32(unsigned long sig, struct k_sigaction *ka, goto badframe; regs->gpr[1] = newsp; - regs->gpr[3] = sig; + regs->gpr[3] = ksig->sig; regs->gpr[4] = (unsigned long) sc; - regs->nip = (unsigned long) ka->sa.sa_handler; + regs->nip = (unsigned long) (unsigned long)ksig->ka.sa.sa_handler; /* enter the signal handler in big-endian mode */ regs->msr &= ~MSR_LE; - return 1; + return 0; badframe: if (show_unhandled_signals) @@ -1486,8 +1483,7 @@ badframe: current->comm, current->pid, frame, regs->nip, regs->link); - force_sigsegv(sig, current); - return 0; + return 1; } /* diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c index 97c1e4b683fc..2cb0c94cafa5 100644 --- a/arch/powerpc/kernel/signal_64.c +++ b/arch/powerpc/kernel/signal_64.c @@ -708,20 +708,19 @@ badframe: return 0; } -int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +int handle_rt_signal64(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs) { struct rt_sigframe __user *frame; unsigned long newsp = 0; long err = 0; - frame = get_sigframe(ka, get_tm_stackpointer(regs), sizeof(*frame), 0); + frame = get_sigframe(ksig, get_tm_stackpointer(regs), sizeof(*frame), 0); if (unlikely(frame == NULL)) goto badframe; err |= __put_user(&frame->info, &frame->pinfo); err |= __put_user(&frame->uc, &frame->puc); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); if (err) goto badframe; @@ -736,15 +735,15 @@ int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info, err |= __put_user(&frame->uc_transact, &frame->uc.uc_link); err |= setup_tm_sigcontexts(&frame->uc.uc_mcontext, &frame->uc_transact.uc_mcontext, - regs, signr, + regs, ksig->sig, NULL, - (unsigned long)ka->sa.sa_handler); + (unsigned long)ksig->ka.sa.sa_handler); } else #endif { err |= __put_user(0, &frame->uc.uc_link); - err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, signr, - NULL, (unsigned long)ka->sa.sa_handler, + err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, ksig->sig, + NULL, (unsigned long)ksig->ka.sa.sa_handler, 1); } err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); @@ -770,7 +769,7 @@ int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info, /* Set up "regs" so we "return" to the signal handler. */ if (is_elf2_task()) { - regs->nip = (unsigned long) ka->sa.sa_handler; + regs->nip = (unsigned long) ksig->ka.sa.sa_handler; regs->gpr[12] = regs->nip; } else { /* Handler is *really* a pointer to the function descriptor for @@ -779,7 +778,7 @@ int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info, * entry is the TOC value we need to use. */ func_descr_t __user *funct_desc_ptr = - (func_descr_t __user *) ka->sa.sa_handler; + (func_descr_t __user *) ksig->ka.sa.sa_handler; err |= get_user(regs->nip, &funct_desc_ptr->entry); err |= get_user(regs->gpr[2], &funct_desc_ptr->toc); @@ -789,9 +788,9 @@ int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info, regs->msr &= ~MSR_LE; regs->msr |= (MSR_KERNEL & MSR_LE); regs->gpr[1] = newsp; - regs->gpr[3] = signr; + regs->gpr[3] = ksig->sig; regs->result = 0; - if (ka->sa.sa_flags & SA_SIGINFO) { + if (ksig->ka.sa.sa_flags & SA_SIGINFO) { err |= get_user(regs->gpr[4], (unsigned long __user *)&frame->pinfo); err |= get_user(regs->gpr[5], (unsigned long __user *)&frame->puc); regs->gpr[6] = (unsigned long) frame; @@ -801,7 +800,7 @@ int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info, if (err) goto badframe; - return 1; + return 0; badframe: if (show_unhandled_signals) @@ -809,6 +808,5 @@ badframe: current->comm, current->pid, "setup_rt_frame", (long)frame, regs->nip, regs->link); - force_sigsegv(signr, current); - return 0; + return 1; } diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c index f204d6920368..598b0b42668b 100644 --- a/arch/s390/kernel/compat_signal.c +++ b/arch/s390/kernel/compat_signal.c @@ -320,38 +320,39 @@ static inline int map_signal(int sig) return sig; } -static int setup_frame32(int sig, struct k_sigaction *ka, - sigset_t *set, struct pt_regs * regs) +static int setup_frame32(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { - sigframe32 __user *frame = get_sigframe(ka, regs, sizeof(sigframe32)); + int sig = ksig->sig; + sigframe32 __user *frame = get_sigframe(&ksig->ka, regs, sizeof(sigframe32)); if (frame == (void __user *) -1UL) - goto give_sigsegv; + return -EFAULT; if (__copy_to_user(&frame->sc.oldmask, &set->sig, _SIGMASK_COPY_SIZE32)) - goto give_sigsegv; + return -EFAULT; if (save_sigregs32(regs, &frame->sregs)) - goto give_sigsegv; + return -EFAULT; if (save_sigregs_gprs_high(regs, frame->gprs_high)) - goto give_sigsegv; + return -EFAULT; if (__put_user((unsigned long) &frame->sregs, &frame->sc.sregs)) - goto give_sigsegv; + return -EFAULT; /* Set up to return from userspace. If provided, use a stub already in userspace. */ - if (ka->sa.sa_flags & SA_RESTORER) { - regs->gprs[14] = (__u64 __force) ka->sa.sa_restorer | PSW32_ADDR_AMODE; + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + regs->gprs[14] = (__u64 __force) ksig->ka.sa.sa_restorer | PSW32_ADDR_AMODE; } else { regs->gprs[14] = (__u64 __force) frame->retcode | PSW32_ADDR_AMODE; if (__put_user(S390_SYSCALL_OPCODE | __NR_sigreturn, (u16 __force __user *)(frame->retcode))) - goto give_sigsegv; + return -EFAULT; } /* Set up backchain. */ if (__put_user(regs->gprs[15], (unsigned int __user *) frame)) - goto give_sigsegv; + return -EFAULT; /* Set up registers for signal handler */ regs->gprs[15] = (__force __u64) frame; @@ -359,7 +360,7 @@ static int setup_frame32(int sig, struct k_sigaction *ka, regs->psw.mask = PSW_MASK_BA | (PSW_USER_BITS & PSW_MASK_ASC) | (regs->psw.mask & ~PSW_MASK_ASC); - regs->psw.addr = (__force __u64) ka->sa.sa_handler; + regs->psw.addr = (__force __u64) ksig->ka.sa.sa_handler; regs->gprs[2] = map_signal(sig); regs->gprs[3] = (__force __u64) &frame->sc; @@ -376,25 +377,21 @@ static int setup_frame32(int sig, struct k_sigaction *ka, /* Place signal number on stack to allow backtrace from handler. */ if (__put_user(regs->gprs[2], (int __force __user *) &frame->signo)) - goto give_sigsegv; + return -EFAULT; return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } -static int setup_rt_frame32(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs * regs) +static int setup_rt_frame32(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { int err = 0; - rt_sigframe32 __user *frame = get_sigframe(ka, regs, sizeof(rt_sigframe32)); + rt_sigframe32 __user *frame = get_sigframe(&ksig->ka, regs, sizeof(rt_sigframe32)); if (frame == (void __user *) -1UL) - goto give_sigsegv; + return -EFAULT; - if (copy_siginfo_to_user32(&frame->info, info)) - goto give_sigsegv; + if (copy_siginfo_to_user32(&frame->info, &ksig->info)) + return -EFAULT; /* Create the ucontext. */ err |= __put_user(UC_EXTENDED, &frame->uc.uc_flags); @@ -404,22 +401,22 @@ static int setup_rt_frame32(int sig, struct k_sigaction *ka, siginfo_t *info, err |= save_sigregs_gprs_high(regs, frame->gprs_high); err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); if (err) - goto give_sigsegv; + return -EFAULT; /* Set up to return from userspace. If provided, use a stub already in userspace. */ - if (ka->sa.sa_flags & SA_RESTORER) { - regs->gprs[14] = (__u64 __force) ka->sa.sa_restorer | PSW32_ADDR_AMODE; + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + regs->gprs[14] = (__u64 __force) ksig->ka.sa.sa_restorer | PSW32_ADDR_AMODE; } else { regs->gprs[14] = (__u64 __force) frame->retcode | PSW32_ADDR_AMODE; if (__put_user(S390_SYSCALL_OPCODE | __NR_rt_sigreturn, (u16 __force __user *)(frame->retcode))) - goto give_sigsegv; + return -EFAULT; } /* Set up backchain. */ if (__put_user(regs->gprs[15], (unsigned int __force __user *) frame)) - goto give_sigsegv; + return -EFAULT; /* Set up registers for signal handler */ regs->gprs[15] = (__force __u64) frame; @@ -427,36 +424,30 @@ static int setup_rt_frame32(int sig, struct k_sigaction *ka, siginfo_t *info, regs->psw.mask = PSW_MASK_BA | (PSW_USER_BITS & PSW_MASK_ASC) | (regs->psw.mask & ~PSW_MASK_ASC); - regs->psw.addr = (__u64 __force) ka->sa.sa_handler; + regs->psw.addr = (__u64 __force) ksig->ka.sa.sa_handler; - regs->gprs[2] = map_signal(sig); + regs->gprs[2] = map_signal(ksig->sig); regs->gprs[3] = (__force __u64) &frame->info; regs->gprs[4] = (__force __u64) &frame->uc; regs->gprs[5] = task_thread_info(current)->last_break; return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } /* * OK, we're invoking a handler */ -void handle_signal32(unsigned long sig, struct k_sigaction *ka, - siginfo_t *info, sigset_t *oldset, struct pt_regs *regs) +void handle_signal32(struct ksignal *ksig, sigset_t *oldset, + struct pt_regs *regs) { int ret; /* Set up the stack frame */ - if (ka->sa.sa_flags & SA_SIGINFO) - ret = setup_rt_frame32(sig, ka, info, oldset, regs); + if (ksig->ka.sa.sa_flags & SA_SIGINFO) + ret = setup_rt_frame32(ksig, oldset, regs); else - ret = setup_frame32(sig, ka, oldset, regs); - if (ret) - return; - signal_delivered(sig, info, ka, regs, - test_thread_flag(TIF_SINGLE_STEP)); + ret = setup_frame32(ksig, oldset, regs); + + signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLE_STEP)); } diff --git a/arch/s390/kernel/entry.h b/arch/s390/kernel/entry.h index 6ac78192455f..1aad48398d06 100644 --- a/arch/s390/kernel/entry.h +++ b/arch/s390/kernel/entry.h @@ -48,8 +48,8 @@ void do_per_trap(struct pt_regs *regs); void syscall_trace(struct pt_regs *regs, int entryexit); void kernel_stack_overflow(struct pt_regs * regs); void do_signal(struct pt_regs *regs); -void handle_signal32(unsigned long sig, struct k_sigaction *ka, - siginfo_t *info, sigset_t *oldset, struct pt_regs *regs); +void handle_signal32(struct ksignal *ksig, sigset_t *oldset, + struct pt_regs *regs); void do_notify_resume(struct pt_regs *regs); void __init init_IRQ(void); diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c index 42b49f9e19bf..469c4c6d9182 100644 --- a/arch/s390/kernel/signal.c +++ b/arch/s390/kernel/signal.c @@ -200,15 +200,15 @@ static int setup_frame(int sig, struct k_sigaction *ka, frame = get_sigframe(ka, regs, sizeof(sigframe)); if (frame == (void __user *) -1UL) - goto give_sigsegv; + return -EFAULT; if (__copy_to_user(&frame->sc.oldmask, &set->sig, _SIGMASK_COPY_SIZE)) - goto give_sigsegv; + return -EFAULT; if (save_sigregs(regs, &frame->sregs)) - goto give_sigsegv; + return -EFAULT; if (__put_user(&frame->sregs, &frame->sc.sregs)) - goto give_sigsegv; + return -EFAULT; /* Set up to return from userspace. If provided, use a stub already in userspace. */ @@ -220,12 +220,12 @@ static int setup_frame(int sig, struct k_sigaction *ka, frame->retcode | PSW_ADDR_AMODE; if (__put_user(S390_SYSCALL_OPCODE | __NR_sigreturn, (u16 __user *)(frame->retcode))) - goto give_sigsegv; + return -EFAULT; } /* Set up backchain. */ if (__put_user(regs->gprs[15], (addr_t __user *) frame)) - goto give_sigsegv; + return -EFAULT; /* Set up registers for signal handler */ regs->gprs[15] = (unsigned long) frame; @@ -250,27 +250,23 @@ static int setup_frame(int sig, struct k_sigaction *ka, /* Place signal number on stack to allow backtrace from handler. */ if (__put_user(regs->gprs[2], (int __user *) &frame->signo)) - goto give_sigsegv; + return -EFAULT; return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } -static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs * regs) +static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { int err = 0; rt_sigframe __user *frame; - frame = get_sigframe(ka, regs, sizeof(rt_sigframe)); + frame = get_sigframe(&ksig->ka, regs, sizeof(rt_sigframe)); if (frame == (void __user *) -1UL) - goto give_sigsegv; + return -EFAULT; - if (copy_siginfo_to_user(&frame->info, info)) - goto give_sigsegv; + if (copy_siginfo_to_user(&frame->info, &ksig->info)) + return -EFAULT; /* Create the ucontext. */ err |= __put_user(0, &frame->uc.uc_flags); @@ -279,24 +275,24 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= save_sigregs(regs, &frame->uc.uc_mcontext); err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); if (err) - goto give_sigsegv; + return -EFAULT; /* Set up to return from userspace. If provided, use a stub already in userspace. */ - if (ka->sa.sa_flags & SA_RESTORER) { + if (ksig->ka.sa.sa_flags & SA_RESTORER) { regs->gprs[14] = (unsigned long) - ka->sa.sa_restorer | PSW_ADDR_AMODE; + ksig->ka.sa.sa_restorer | PSW_ADDR_AMODE; } else { regs->gprs[14] = (unsigned long) frame->retcode | PSW_ADDR_AMODE; if (__put_user(S390_SYSCALL_OPCODE | __NR_rt_sigreturn, (u16 __user *)(frame->retcode))) - goto give_sigsegv; + return -EFAULT; } /* Set up backchain. */ if (__put_user(regs->gprs[15], (addr_t __user *) frame)) - goto give_sigsegv; + return -EFAULT; /* Set up registers for signal handler */ regs->gprs[15] = (unsigned long) frame; @@ -304,34 +300,27 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, regs->psw.mask = PSW_MASK_EA | PSW_MASK_BA | (PSW_USER_BITS & PSW_MASK_ASC) | (regs->psw.mask & ~PSW_MASK_ASC); - regs->psw.addr = (unsigned long) ka->sa.sa_handler | PSW_ADDR_AMODE; + regs->psw.addr = (unsigned long) ksig->ka.sa.sa_handler | PSW_ADDR_AMODE; - regs->gprs[2] = map_signal(sig); + regs->gprs[2] = map_signal(ksig->sig); regs->gprs[3] = (unsigned long) &frame->info; regs->gprs[4] = (unsigned long) &frame->uc; regs->gprs[5] = task_thread_info(current)->last_break; return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } -static void handle_signal(unsigned long sig, struct k_sigaction *ka, - siginfo_t *info, sigset_t *oldset, - struct pt_regs *regs) +static void handle_signal(struct ksignal *ksig, sigset_t *oldset, + struct pt_regs *regs) { int ret; /* Set up the stack frame */ - if (ka->sa.sa_flags & SA_SIGINFO) - ret = setup_rt_frame(sig, ka, info, oldset, regs); + if (ksig->ka.sa.sa_flags & SA_SIGINFO) + ret = setup_rt_frame(ksig, oldset, regs); else - ret = setup_frame(sig, ka, oldset, regs); - if (ret) - return; - signal_delivered(sig, info, ka, regs, - test_thread_flag(TIF_SINGLE_STEP)); + ret = setup_frame(ksig->sig, &ksig->ka, oldset, regs); + + signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLE_STEP)); } /* @@ -345,9 +334,7 @@ static void handle_signal(unsigned long sig, struct k_sigaction *ka, */ void do_signal(struct pt_regs *regs) { - siginfo_t info; - int signr; - struct k_sigaction ka; + struct ksignal ksig; sigset_t *oldset = sigmask_to_save(); /* @@ -357,9 +344,8 @@ void do_signal(struct pt_regs *regs) */ current_thread_info()->system_call = test_pt_regs_flag(regs, PIF_SYSCALL) ? regs->int_code : 0; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { + if (get_signal(&ksig)) { /* Whee! Actually deliver the signal. */ if (current_thread_info()->system_call) { regs->int_code = current_thread_info()->system_call; @@ -370,7 +356,7 @@ void do_signal(struct pt_regs *regs) regs->gprs[2] = -EINTR; break; case -ERESTARTSYS: - if (!(ka.sa.sa_flags & SA_RESTART)) { + if (!(ksig.ka.sa.sa_flags & SA_RESTART)) { regs->gprs[2] = -EINTR; break; } @@ -387,9 +373,9 @@ void do_signal(struct pt_regs *regs) clear_pt_regs_flag(regs, PIF_SYSCALL); if (is_compat_task()) - handle_signal32(signr, &ka, &info, oldset, regs); + handle_signal32(&ksig, oldset, regs); else - handle_signal(signr, &ka, &info, oldset, regs); + handle_signal(&ksig, oldset, regs); return; } diff --git a/arch/score/kernel/signal.c b/arch/score/kernel/signal.c index a00fba32b0eb..1651807774ad 100644 --- a/arch/score/kernel/signal.c +++ b/arch/score/kernel/signal.c @@ -173,15 +173,15 @@ badframe: return 0; } -static int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs, - int signr, sigset_t *set, siginfo_t *info) +static int setup_rt_frame(struct ksignal *ksig, struct pt_regs *regs, + sigset_t *set) { struct rt_sigframe __user *frame; int err = 0; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(&ksig->ka, regs, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; /* * Set up the return code ... @@ -194,7 +194,7 @@ static int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs, err |= __put_user(0x80008002, frame->rs_code + 1); flush_cache_sigtramp((unsigned long) frame->rs_code); - err |= copy_siginfo_to_user(&frame->rs_info, info); + err |= copy_siginfo_to_user(&frame->rs_info, &ksig->info); err |= __put_user(0, &frame->rs_uc.uc_flags); err |= __put_user(NULL, &frame->rs_uc.uc_link); err |= __save_altstack(&frame->rs_uc.uc_stack, regs->regs[0]); @@ -202,26 +202,23 @@ static int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs, err |= __copy_to_user(&frame->rs_uc.uc_sigmask, set, sizeof(*set)); if (err) - goto give_sigsegv; + return -EFAULT; regs->regs[0] = (unsigned long) frame; regs->regs[3] = (unsigned long) frame->rs_code; - regs->regs[4] = signr; + regs->regs[4] = ksig->sig; regs->regs[5] = (unsigned long) &frame->rs_info; regs->regs[6] = (unsigned long) &frame->rs_uc; - regs->regs[29] = (unsigned long) ka->sa.sa_handler; - regs->cp0_epc = (unsigned long) ka->sa.sa_handler; + regs->regs[29] = (unsigned long) ksig->ka.sa.sa_handler; + regs->cp0_epc = (unsigned long) ksig->ka.sa.sa_handler; return 0; - -give_sigsegv: - force_sigsegv(signr, current); - return -EFAULT; } -static void handle_signal(unsigned long sig, siginfo_t *info, - struct k_sigaction *ka, struct pt_regs *regs) +static void handle_signal(struct ksignal *ksig, struct pt_regs *regs) { + int ret; + if (regs->is_syscall) { switch (regs->regs[4]) { case ERESTART_RESTARTBLOCK: @@ -229,7 +226,7 @@ static void handle_signal(unsigned long sig, siginfo_t *info, regs->regs[4] = EINTR; break; case ERESTARTSYS: - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { regs->regs[4] = EINTR; break; } @@ -245,17 +242,14 @@ static void handle_signal(unsigned long sig, siginfo_t *info, /* * Set up the stack frame */ - if (setup_rt_frame(ka, regs, sig, sigmask_to_save(), info) < 0) - return; + ret = setup_rt_frame(ksig, regs, sigmask_to_save()); - signal_delivered(sig, info, ka, regs, 0); + signal_setup_done(ret, ksig, 0); } static void do_signal(struct pt_regs *regs) { - struct k_sigaction ka; - siginfo_t info; - int signr; + struct ksignal ksig; /* * We want the common case to go fast, which is why we may in certain @@ -265,10 +259,9 @@ static void do_signal(struct pt_regs *regs) if (!user_mode(regs)) return; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { + if (get_signal(&ksig)) { /* Actually deliver the signal. */ - handle_signal(signr, &info, &ka, regs); + handle_signal(&ksig, regs); return; } diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c index 594cd371aa28..2f002b24fb92 100644 --- a/arch/sh/kernel/signal_32.c +++ b/arch/sh/kernel/signal_32.c @@ -262,17 +262,17 @@ get_sigframe(struct k_sigaction *ka, unsigned long sp, size_t frame_size) extern void __kernel_sigreturn(void); extern void __kernel_rt_sigreturn(void); -static int setup_frame(int sig, struct k_sigaction *ka, - sigset_t *set, struct pt_regs *regs) +static int setup_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { struct sigframe __user *frame; - int err = 0; + int err = 0, sig = ksig->sig; int signal; - frame = get_sigframe(ka, regs->regs[15], sizeof(*frame)); + frame = get_sigframe(&ksig->ka, regs->regs[15], sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; signal = current_thread_info()->exec_domain && current_thread_info()->exec_domain->signal_invmap @@ -288,8 +288,8 @@ static int setup_frame(int sig, struct k_sigaction *ka, /* Set up to return from userspace. If provided, use a stub already in userspace. */ - if (ka->sa.sa_flags & SA_RESTORER) { - regs->pr = (unsigned long) ka->sa.sa_restorer; + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + regs->pr = (unsigned long) ksig->ka.sa.sa_restorer; #ifdef CONFIG_VSYSCALL } else if (likely(current->mm->context.vdso)) { regs->pr = VDSO_SYM(&__kernel_sigreturn); @@ -309,7 +309,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, } if (err) - goto give_sigsegv; + return -EFAULT; /* Set up registers for signal handler */ regs->regs[15] = (unsigned long) frame; @@ -319,15 +319,15 @@ static int setup_frame(int sig, struct k_sigaction *ka, if (current->personality & FDPIC_FUNCPTRS) { struct fdpic_func_descriptor __user *funcptr = - (struct fdpic_func_descriptor __user *)ka->sa.sa_handler; + (struct fdpic_func_descriptor __user *)ksig->ka.sa.sa_handler; err |= __get_user(regs->pc, &funcptr->text); err |= __get_user(regs->regs[12], &funcptr->GOT); } else - regs->pc = (unsigned long)ka->sa.sa_handler; + regs->pc = (unsigned long)ksig->ka.sa.sa_handler; if (err) - goto give_sigsegv; + return -EFAULT; set_fs(USER_DS); @@ -335,23 +335,19 @@ static int setup_frame(int sig, struct k_sigaction *ka, current->comm, task_pid_nr(current), frame, regs->pc, regs->pr); return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } -static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { struct rt_sigframe __user *frame; - int err = 0; + int err = 0, sig = ksig->sig; int signal; - frame = get_sigframe(ka, regs->regs[15], sizeof(*frame)); + frame = get_sigframe(&ksig->ka, regs->regs[15], sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; signal = current_thread_info()->exec_domain && current_thread_info()->exec_domain->signal_invmap @@ -359,7 +355,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, ? current_thread_info()->exec_domain->signal_invmap[sig] : sig; - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); /* Create the ucontext. */ err |= __put_user(0, &frame->uc.uc_flags); @@ -371,8 +367,8 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, /* Set up to return from userspace. If provided, use a stub already in userspace. */ - if (ka->sa.sa_flags & SA_RESTORER) { - regs->pr = (unsigned long) ka->sa.sa_restorer; + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + regs->pr = (unsigned long) ksig->ka.sa.sa_restorer; #ifdef CONFIG_VSYSCALL } else if (likely(current->mm->context.vdso)) { regs->pr = VDSO_SYM(&__kernel_rt_sigreturn); @@ -392,7 +388,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, } if (err) - goto give_sigsegv; + return -EFAULT; /* Set up registers for signal handler */ regs->regs[15] = (unsigned long) frame; @@ -402,15 +398,15 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, if (current->personality & FDPIC_FUNCPTRS) { struct fdpic_func_descriptor __user *funcptr = - (struct fdpic_func_descriptor __user *)ka->sa.sa_handler; + (struct fdpic_func_descriptor __user *)ksig->ka.sa.sa_handler; err |= __get_user(regs->pc, &funcptr->text); err |= __get_user(regs->regs[12], &funcptr->GOT); } else - regs->pc = (unsigned long)ka->sa.sa_handler; + regs->pc = (unsigned long)ksig->ka.sa.sa_handler; if (err) - goto give_sigsegv; + return -EFAULT; set_fs(USER_DS); @@ -418,10 +414,6 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, current->comm, task_pid_nr(current), frame, regs->pc, regs->pr); return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } static inline void @@ -455,22 +447,18 @@ handle_syscall_restart(unsigned long save_r0, struct pt_regs *regs, * OK, we're invoking a handler */ static void -handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, - struct pt_regs *regs, unsigned int save_r0) +handle_signal(struct ksignal *ksig, struct pt_regs *regs, unsigned int save_r0) { sigset_t *oldset = sigmask_to_save(); int ret; /* Set up the stack frame */ - if (ka->sa.sa_flags & SA_SIGINFO) - ret = setup_rt_frame(sig, ka, info, oldset, regs); + if (ksig->ka.sa.sa_flags & SA_SIGINFO) + ret = setup_rt_frame(ksig, oldset, regs); else - ret = setup_frame(sig, ka, oldset, regs); + ret = setup_frame(ksig, oldset, regs); - if (ret) - return; - signal_delivered(sig, info, ka, regs, - test_thread_flag(TIF_SINGLESTEP)); + signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP)); } /* @@ -484,9 +472,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, */ static void do_signal(struct pt_regs *regs, unsigned int save_r0) { - siginfo_t info; - int signr; - struct k_sigaction ka; + struct ksignal ksig; /* * We want the common case to go fast, which @@ -497,12 +483,11 @@ static void do_signal(struct pt_regs *regs, unsigned int save_r0) if (!user_mode(regs)) return; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { - handle_syscall_restart(save_r0, regs, &ka.sa); + if (get_signal(&ksig)) { + handle_syscall_restart(save_r0, regs, &ksig.ka.sa); /* Whee! Actually deliver the signal. */ - handle_signal(signr, &ka, &info, regs, save_r0); + handle_signal(&ksig, regs, save_r0); return; } diff --git a/arch/sh/kernel/signal_64.c b/arch/sh/kernel/signal_64.c index 23d4c71c91af..897abe7b871e 100644 --- a/arch/sh/kernel/signal_64.c +++ b/arch/sh/kernel/signal_64.c @@ -41,8 +41,7 @@ #define DEBUG_SIG 0 static void -handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, - struct pt_regs * regs); +handle_signal(struct ksignal *ksig, struct pt_regs *regs); static inline void handle_syscall_restart(struct pt_regs *regs, struct sigaction *sa) @@ -82,9 +81,7 @@ handle_syscall_restart(struct pt_regs *regs, struct sigaction *sa) */ static void do_signal(struct pt_regs *regs) { - siginfo_t info; - int signr; - struct k_sigaction ka; + struct ksignal ksig; /* * We want the common case to go fast, which @@ -95,12 +92,11 @@ static void do_signal(struct pt_regs *regs) if (!user_mode(regs)) return; - signr = get_signal_to_deliver(&info, &ka, regs, 0); - if (signr > 0) { - handle_syscall_restart(regs, &ka.sa); + if (get_signal(&ksig)) { + handle_syscall_restart(regs, &ksig.ka.sa); /* Whee! Actually deliver the signal. */ - handle_signal(signr, &info, &ka, regs); + handle_signal(&ksig, regs); return; } @@ -378,17 +374,16 @@ get_sigframe(struct k_sigaction *ka, unsigned long sp, size_t frame_size) void sa_default_restorer(void); /* See comments below */ void sa_default_rt_restorer(void); /* See comments below */ -static int setup_frame(int sig, struct k_sigaction *ka, - sigset_t *set, struct pt_regs *regs) +static int setup_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs) { struct sigframe __user *frame; - int err = 0; + int err = 0, sig = ksig->sig; int signal; - frame = get_sigframe(ka, regs->regs[REG_SP], sizeof(*frame)); + frame = get_sigframe(&ksig->ka, regs->regs[REG_SP], sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; signal = current_thread_info()->exec_domain && current_thread_info()->exec_domain->signal_invmap @@ -400,7 +395,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, /* Give up earlier as i386, in case */ if (err) - goto give_sigsegv; + return -EFAULT; if (_NSIG_WORDS > 1) { err |= __copy_to_user(frame->extramask, &set->sig[1], @@ -408,16 +403,16 @@ static int setup_frame(int sig, struct k_sigaction *ka, /* Give up earlier as i386, in case */ if (err) - goto give_sigsegv; + return -EFAULT; /* Set up to return from userspace. If provided, use a stub already in userspace. */ - if (ka->sa.sa_flags & SA_RESTORER) { + if (ksig->ka.sa.sa_flags & SA_RESTORER) { /* * On SH5 all edited pointers are subject to NEFF */ DEREF_REG_PR = neff_sign_extend((unsigned long) - ka->sa.sa_restorer | 0x1); + ksig->ka->sa.sa_restorer | 0x1); } else { /* * Different approach on SH5. @@ -435,7 +430,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, if (__copy_to_user(frame->retcode, (void *)((unsigned long)sa_default_restorer & (~1)), 16) != 0) - goto give_sigsegv; + return -EFAULT; /* Cohere the trampoline with the I-cache. */ flush_cache_sigtramp(DEREF_REG_PR-1); @@ -460,7 +455,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, regs->regs[REG_ARG2] = (unsigned long long)(unsigned long)(signed long)&frame->sc; regs->regs[REG_ARG3] = (unsigned long long)(unsigned long)(signed long)&frame->sc; - regs->pc = neff_sign_extend((unsigned long)ka->sa.sa_handler); + regs->pc = neff_sign_extend((unsigned long)ksig->ka.sa.sa_handler); set_fs(USER_DS); @@ -471,23 +466,19 @@ static int setup_frame(int sig, struct k_sigaction *ka, DEREF_REG_PR >> 32, DEREF_REG_PR & 0xffffffff); return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } -static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +static int setup_rt_frame(struct ksignal *kig, sigset_t *set, + struct pt_regs *regs) { struct rt_sigframe __user *frame; - int err = 0; + int err = 0, sig = ksig->sig; int signal; - frame = get_sigframe(ka, regs->regs[REG_SP], sizeof(*frame)); + frame = get_sigframe(&ksig->ka, regs->regs[REG_SP], sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; signal = current_thread_info()->exec_domain && current_thread_info()->exec_domain->signal_invmap @@ -497,11 +488,11 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= __put_user(&frame->info, &frame->pinfo); err |= __put_user(&frame->uc, &frame->puc); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); /* Give up earlier as i386, in case */ if (err) - goto give_sigsegv; + return -EFAULT; /* Create the ucontext. */ err |= __put_user(0, &frame->uc.uc_flags); @@ -513,16 +504,16 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, /* Give up earlier as i386, in case */ if (err) - goto give_sigsegv; + return -EFAULT; /* Set up to return from userspace. If provided, use a stub already in userspace. */ - if (ka->sa.sa_flags & SA_RESTORER) { + if (ksig->ka.sa.sa_flags & SA_RESTORER) { /* * On SH5 all edited pointers are subject to NEFF */ DEREF_REG_PR = neff_sign_extend((unsigned long) - ka->sa.sa_restorer | 0x1); + ksig->ka.sa.sa_restorer | 0x1); } else { /* * Different approach on SH5. @@ -540,7 +531,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, if (__copy_to_user(frame->retcode, (void *)((unsigned long)sa_default_rt_restorer & (~1)), 16) != 0) - goto give_sigsegv; + return -EFAULT; /* Cohere the trampoline with the I-cache. */ flush_icache_range(DEREF_REG_PR-1, DEREF_REG_PR-1+15); @@ -554,7 +545,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, regs->regs[REG_ARG1] = signal; /* Arg for signal handler */ regs->regs[REG_ARG2] = (unsigned long long)(unsigned long)(signed long)&frame->info; regs->regs[REG_ARG3] = (unsigned long long)(unsigned long)(signed long)&frame->uc.uc_mcontext; - regs->pc = neff_sign_extend((unsigned long)ka->sa.sa_handler); + regs->pc = neff_sign_extend((unsigned long)ksig->ka.sa.sa_handler); set_fs(USER_DS); @@ -564,33 +555,24 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, DEREF_REG_PR >> 32, DEREF_REG_PR & 0xffffffff); return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } /* * OK, we're invoking a handler */ static void -handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, - struct pt_regs * regs) +handle_signal(struct ksignal *ksig, struct pt_regs *regs) { sigset_t *oldset = sigmask_to_save(); int ret; /* Set up the stack frame */ - if (ka->sa.sa_flags & SA_SIGINFO) - ret = setup_rt_frame(sig, ka, info, oldset, regs); + if (ksig->ka.sa.sa_flags & SA_SIGINFO) + ret = setup_rt_frame(ksig, oldset, regs); else - ret = setup_frame(sig, ka, oldset, regs); - - if (ret) - return; + ret = setup_frame(ksig, oldset, regs); - signal_delivered(sig, info, ka, regs, - test_thread_flag(TIF_SINGLESTEP)); + signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP)); } asmlinkage void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags) diff --git a/arch/tile/include/asm/compat.h b/arch/tile/include/asm/compat.h index ffd4493efc78..c14e36f008c8 100644 --- a/arch/tile/include/asm/compat.h +++ b/arch/tile/include/asm/compat.h @@ -267,8 +267,7 @@ static inline int is_compat_task(void) return current_thread_info()->status & TS_COMPAT; } -extern int compat_setup_rt_frame(int sig, struct k_sigaction *ka, - siginfo_t *info, sigset_t *set, +extern int compat_setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs); /* Compat syscalls. */ diff --git a/arch/tile/kernel/compat_signal.c b/arch/tile/kernel/compat_signal.c index 19c04b5ce408..8c5abf2e4794 100644 --- a/arch/tile/kernel/compat_signal.c +++ b/arch/tile/kernel/compat_signal.c @@ -190,18 +190,18 @@ static inline void __user *compat_get_sigframe(struct k_sigaction *ka, return (void __user *) sp; } -int compat_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +int compat_setup_rt_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { unsigned long restorer; struct compat_rt_sigframe __user *frame; - int err = 0; + int err = 0, sig = ksig->sig; int usig; - frame = compat_get_sigframe(ka, regs, sizeof(*frame)); + frame = compat_get_sigframe(&ksig->ka, regs, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + goto err; usig = current_thread_info()->exec_domain && current_thread_info()->exec_domain->signal_invmap @@ -210,12 +210,12 @@ int compat_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, : sig; /* Always write at least the signal number for the stack backtracer. */ - if (ka->sa.sa_flags & SA_SIGINFO) { + if (ksig->ka.sa.sa_flags & SA_SIGINFO) { /* At sigreturn time, restore the callee-save registers too. */ - err |= copy_siginfo_to_user32(&frame->info, info); + err |= copy_siginfo_to_user32(&frame->info, &ksig->info); regs->flags |= PT_FLAGS_RESTORE_REGS; } else { - err |= __put_user(info->si_signo, &frame->info.si_signo); + err |= __put_user(ksig->info.si_signo, &frame->info.si_signo); } /* Create the ucontext. */ @@ -226,11 +226,11 @@ int compat_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= setup_sigcontext(&frame->uc.uc_mcontext, regs); err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); if (err) - goto give_sigsegv; + goto err; restorer = VDSO_SYM(&__vdso_rt_sigreturn); - if (ka->sa.sa_flags & SA_RESTORER) - restorer = ptr_to_compat_reg(ka->sa.sa_restorer); + if (ksig->ka.sa.sa_flags & SA_RESTORER) + restorer = ptr_to_compat_reg(ksig->ka.sa.sa_restorer); /* * Set up registers for signal handler. @@ -239,7 +239,7 @@ int compat_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, * We always pass siginfo and mcontext, regardless of SA_SIGINFO, * since some things rely on this (e.g. glibc's debug/segfault.c). */ - regs->pc = ptr_to_compat_reg(ka->sa.sa_handler); + regs->pc = ptr_to_compat_reg(ksig->ka.sa.sa_handler); regs->ex1 = PL_ICS_EX1(USER_PL, 1); /* set crit sec in handler */ regs->sp = ptr_to_compat_reg(frame); regs->lr = restorer; @@ -249,7 +249,8 @@ int compat_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, regs->flags |= PT_FLAGS_CALLER_SAVES; return 0; -give_sigsegv: - signal_fault("bad setup frame", regs, frame, sig); +err: + trace_unhandled_signal("bad sigreturn frame", regs, + (unsigned long)frame, SIGSEGV); return -EFAULT; } diff --git a/arch/tile/kernel/signal.c b/arch/tile/kernel/signal.c index d1d026f01267..7c2fecc52177 100644 --- a/arch/tile/kernel/signal.c +++ b/arch/tile/kernel/signal.c @@ -153,18 +153,18 @@ static inline void __user *get_sigframe(struct k_sigaction *ka, return (void __user *) sp; } -static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { unsigned long restorer; struct rt_sigframe __user *frame; - int err = 0; + int err = 0, sig = ksig->sig; int usig; - frame = get_sigframe(ka, regs, sizeof(*frame)); + frame = get_sigframe(&ksig->ka, regs, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + goto err; usig = current_thread_info()->exec_domain && current_thread_info()->exec_domain->signal_invmap @@ -173,12 +173,12 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, : sig; /* Always write at least the signal number for the stack backtracer. */ - if (ka->sa.sa_flags & SA_SIGINFO) { + if (ksig->ka.sa.sa_flags & SA_SIGINFO) { /* At sigreturn time, restore the callee-save registers too. */ - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); regs->flags |= PT_FLAGS_RESTORE_REGS; } else { - err |= __put_user(info->si_signo, &frame->info.si_signo); + err |= __put_user(ksig->info.si_signo, &frame->info.si_signo); } /* Create the ucontext. */ @@ -189,11 +189,11 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= setup_sigcontext(&frame->uc.uc_mcontext, regs); err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); if (err) - goto give_sigsegv; + goto err; restorer = VDSO_SYM(&__vdso_rt_sigreturn); - if (ka->sa.sa_flags & SA_RESTORER) - restorer = (unsigned long) ka->sa.sa_restorer; + if (ksig->ka.sa.sa_flags & SA_RESTORER) + restorer = (unsigned long) ksig->ka.sa.sa_restorer; /* * Set up registers for signal handler. @@ -202,7 +202,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, * We always pass siginfo and mcontext, regardless of SA_SIGINFO, * since some things rely on this (e.g. glibc's debug/segfault.c). */ - regs->pc = (unsigned long) ka->sa.sa_handler; + regs->pc = (unsigned long) ksig->ka.sa.sa_handler; regs->ex1 = PL_ICS_EX1(USER_PL, 1); /* set crit sec in handler */ regs->sp = (unsigned long) frame; regs->lr = restorer; @@ -212,8 +212,9 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, regs->flags |= PT_FLAGS_CALLER_SAVES; return 0; -give_sigsegv: - signal_fault("bad setup frame", regs, frame, sig); +err: + trace_unhandled_signal("bad sigreturn frame", regs, + (unsigned long)frame, SIGSEGV); return -EFAULT; } @@ -221,9 +222,7 @@ give_sigsegv: * OK, we're invoking a handler */ -static void handle_signal(unsigned long sig, siginfo_t *info, - struct k_sigaction *ka, - struct pt_regs *regs) +static void handle_signal(struct ksignal *ksig, struct pt_regs *regs) { sigset_t *oldset = sigmask_to_save(); int ret; @@ -238,7 +237,7 @@ static void handle_signal(unsigned long sig, siginfo_t *info, break; case -ERESTARTSYS: - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { regs->regs[0] = -EINTR; break; } @@ -254,14 +253,12 @@ static void handle_signal(unsigned long sig, siginfo_t *info, /* Set up the stack frame */ #ifdef CONFIG_COMPAT if (is_compat_task()) - ret = compat_setup_rt_frame(sig, ka, info, oldset, regs); + ret = compat_setup_rt_frame(ksig, oldset, regs); else #endif - ret = setup_rt_frame(sig, ka, info, oldset, regs); - if (ret) - return; - signal_delivered(sig, info, ka, regs, - test_thread_flag(TIF_SINGLESTEP)); + ret = setup_rt_frame(ksig, oldset, regs); + + signal_setup_done(ret, ksig, test_thread_flag(TIF_SINGLESTEP)); } /* @@ -271,9 +268,7 @@ static void handle_signal(unsigned long sig, siginfo_t *info, */ void do_signal(struct pt_regs *regs) { - siginfo_t info; - int signr; - struct k_sigaction ka; + struct ksignal ksig; /* * i386 will check if we're coming from kernel mode and bail out @@ -282,10 +277,9 @@ void do_signal(struct pt_regs *regs) * helpful, we can reinstate the check on "!user_mode(regs)". */ - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { + if (get_signal(&ksig)) { /* Whee! Actually deliver the signal. */ - handle_signal(signr, &info, &ka, regs); + handle_signal(&ksig, regs); goto done; } diff --git a/arch/um/include/shared/frame_kern.h b/arch/um/include/shared/frame_kern.h index f2ca5702a4e2..a5cde5c433b4 100644 --- a/arch/um/include/shared/frame_kern.h +++ b/arch/um/include/shared/frame_kern.h @@ -6,14 +6,10 @@ #ifndef __FRAME_KERN_H_ #define __FRAME_KERN_H_ -extern int setup_signal_stack_sc(unsigned long stack_top, int sig, - struct k_sigaction *ka, - struct pt_regs *regs, - sigset_t *mask); -extern int setup_signal_stack_si(unsigned long stack_top, int sig, - struct k_sigaction *ka, - struct pt_regs *regs, struct siginfo *info, - sigset_t *mask); +extern int setup_signal_stack_sc(unsigned long stack_top, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *mask); +extern int setup_signal_stack_si(unsigned long stack_top, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *mask); #endif diff --git a/arch/um/kernel/signal.c b/arch/um/kernel/signal.c index f57e02e7910f..4f60e4aad790 100644 --- a/arch/um/kernel/signal.c +++ b/arch/um/kernel/signal.c @@ -18,8 +18,7 @@ EXPORT_SYMBOL(unblock_signals); /* * OK, we're invoking a handler */ -static void handle_signal(struct pt_regs *regs, unsigned long signr, - struct k_sigaction *ka, struct siginfo *info) +static void handle_signal(struct ksignal *ksig, struct pt_regs *regs) { sigset_t *oldset = sigmask_to_save(); int singlestep = 0; @@ -39,7 +38,7 @@ static void handle_signal(struct pt_regs *regs, unsigned long signr, break; case -ERESTARTSYS: - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { PT_REGS_SYSCALL_RET(regs) = -EINTR; break; } @@ -52,32 +51,28 @@ static void handle_signal(struct pt_regs *regs, unsigned long signr, } sp = PT_REGS_SP(regs); - if ((ka->sa.sa_flags & SA_ONSTACK) && (sas_ss_flags(sp) == 0)) + if ((ksig->ka.sa.sa_flags & SA_ONSTACK) && (sas_ss_flags(sp) == 0)) sp = current->sas_ss_sp + current->sas_ss_size; #ifdef CONFIG_ARCH_HAS_SC_SIGNALS - if (!(ka->sa.sa_flags & SA_SIGINFO)) - err = setup_signal_stack_sc(sp, signr, ka, regs, oldset); + if (!(ksig->ka.sa.sa_flags & SA_SIGINFO)) + err = setup_signal_stack_sc(sp, ksig, regs, oldset); else #endif - err = setup_signal_stack_si(sp, signr, ka, regs, info, oldset); + err = setup_signal_stack_si(sp, ksig, regs, oldset); - if (err) - force_sigsegv(signr, current); - else - signal_delivered(signr, info, ka, regs, singlestep); + signal_setup_done(err, ksig, singlestep); } static int kern_do_signal(struct pt_regs *regs) { - struct k_sigaction ka_copy; - struct siginfo info; - int sig, handled_sig = 0; + struct ksignal ksig; + int handled_sig = 0; - while ((sig = get_signal_to_deliver(&info, &ka_copy, regs, NULL)) > 0) { + while (get_signal(&ksig)) { handled_sig = 1; /* Whee! Actually deliver the signal. */ - handle_signal(regs, sig, &ka_copy, &info); + handle_signal(&ksig, regs); } /* Did we come from a system call? */ diff --git a/arch/unicore32/kernel/signal.c b/arch/unicore32/kernel/signal.c index 6905f0ebdc77..780d77388dec 100644 --- a/arch/unicore32/kernel/signal.c +++ b/arch/unicore32/kernel/signal.c @@ -238,10 +238,10 @@ static int setup_return(struct pt_regs *regs, struct k_sigaction *ka, return 0; } -static int setup_frame(int usig, struct k_sigaction *ka, - sigset_t *set, struct pt_regs *regs) +static int setup_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { - struct sigframe __user *frame = get_sigframe(ka, regs, sizeof(*frame)); + struct sigframe __user *frame = get_sigframe(&ksig->ka, regs, sizeof(*frame)); int err = 0; if (!frame) @@ -254,29 +254,29 @@ static int setup_frame(int usig, struct k_sigaction *ka, err |= setup_sigframe(frame, regs, set); if (err == 0) - err |= setup_return(regs, ka, frame->retcode, frame, usig); + err |= setup_return(regs, &ksig->ka, frame->retcode, frame, usig); return err; } -static int setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { struct rt_sigframe __user *frame = - get_sigframe(ka, regs, sizeof(*frame)); + get_sigframe(&ksig->ka, regs, sizeof(*frame)); int err = 0; if (!frame) return 1; - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); err |= __put_user(0, &frame->sig.uc.uc_flags); err |= __put_user(NULL, &frame->sig.uc.uc_link); err |= __save_altstack(&frame->sig.uc.uc_stack, regs->UCreg_sp); err |= setup_sigframe(&frame->sig, regs, set); if (err == 0) - err |= setup_return(regs, ka, frame->sig.retcode, frame, usig); + err |= setup_return(regs, &ksig->ka, frame->sig.retcode, frame, usig); if (err == 0) { /* @@ -299,13 +299,13 @@ static inline void setup_syscall_restart(struct pt_regs *regs) /* * OK, we're invoking a handler */ -static void handle_signal(unsigned long sig, struct k_sigaction *ka, - siginfo_t *info, struct pt_regs *regs, int syscall) +static void handle_signal(struct ksignal *ksig, struct pt_regs *regs, + int syscall) { struct thread_info *thread = current_thread_info(); struct task_struct *tsk = current; sigset_t *oldset = sigmask_to_save(); - int usig = sig; + int usig = ksig->sig; int ret; /* @@ -318,7 +318,7 @@ static void handle_signal(unsigned long sig, struct k_sigaction *ka, regs->UCreg_00 = -EINTR; break; case -ERESTARTSYS: - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { regs->UCreg_00 = -EINTR; break; } @@ -338,22 +338,17 @@ static void handle_signal(unsigned long sig, struct k_sigaction *ka, /* * Set up the stack frame */ - if (ka->sa.sa_flags & SA_SIGINFO) - ret = setup_rt_frame(usig, ka, info, oldset, regs); + if (ksig->ka.sa.sa_flags & SA_SIGINFO) + ret = setup_rt_frame(ksig, oldset, regs); else - ret = setup_frame(usig, ka, oldset, regs); + ret = setup_frame(ksig, oldset, regs); /* * Check that the resulting registers are actually sane. */ ret |= !valid_user_regs(regs); - if (ret != 0) { - force_sigsegv(sig, tsk); - return; - } - - signal_delivered(sig, info, ka, regs, 0); + signal_setup_done(ret, ksig, 0); } /* @@ -367,9 +362,7 @@ static void handle_signal(unsigned long sig, struct k_sigaction *ka, */ static void do_signal(struct pt_regs *regs, int syscall) { - struct k_sigaction ka; - siginfo_t info; - int signr; + struct ksignal ksig; /* * We want the common case to go fast, which @@ -380,9 +373,8 @@ static void do_signal(struct pt_regs *regs, int syscall) if (!user_mode(regs)) return; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { - handle_signal(signr, &ka, &info, regs, syscall); + if (get_signsl(&ksig)) { + handle_signal(&ksig, regs, syscall); return; } diff --git a/arch/x86/um/signal.c b/arch/x86/um/signal.c index 5e04a1c899fa..79d824551c1a 100644 --- a/arch/x86/um/signal.c +++ b/arch/x86/um/signal.c @@ -370,13 +370,12 @@ struct rt_sigframe char retcode[8]; }; -int setup_signal_stack_sc(unsigned long stack_top, int sig, - struct k_sigaction *ka, struct pt_regs *regs, - sigset_t *mask) +int setup_signal_stack_sc(unsigned long stack_top, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *mask) { struct sigframe __user *frame; void __user *restorer; - int err = 0; + int err = 0, sig = ksig->sig; /* This is the same calculation as i386 - ((sp + 4) & 15) == 0 */ stack_top = ((stack_top + 4) & -16UL) - 4; @@ -385,8 +384,8 @@ int setup_signal_stack_sc(unsigned long stack_top, int sig, return 1; restorer = frame->retcode; - if (ka->sa.sa_flags & SA_RESTORER) - restorer = ka->sa.sa_restorer; + if (ksig->ka.sa.sa_flags & SA_RESTORER) + restorer = ksig->ka.sa.sa_restorer; err |= __put_user(restorer, &frame->pretcode); err |= __put_user(sig, &frame->sig); @@ -410,20 +409,19 @@ int setup_signal_stack_sc(unsigned long stack_top, int sig, return err; PT_REGS_SP(regs) = (unsigned long) frame; - PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler; + PT_REGS_IP(regs) = (unsigned long) ksig->ka.sa.sa_handler; PT_REGS_AX(regs) = (unsigned long) sig; PT_REGS_DX(regs) = (unsigned long) 0; PT_REGS_CX(regs) = (unsigned long) 0; return 0; } -int setup_signal_stack_si(unsigned long stack_top, int sig, - struct k_sigaction *ka, struct pt_regs *regs, - siginfo_t *info, sigset_t *mask) +int setup_signal_stack_si(unsigned long stack_top, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *mask) { struct rt_sigframe __user *frame; void __user *restorer; - int err = 0; + int err = 0, sig = ksig->sig; stack_top &= -8UL; frame = (struct rt_sigframe __user *) stack_top - 1; @@ -431,14 +429,14 @@ int setup_signal_stack_si(unsigned long stack_top, int sig, return 1; restorer = frame->retcode; - if (ka->sa.sa_flags & SA_RESTORER) - restorer = ka->sa.sa_restorer; + if (ksig->ka.sa.sa_flags & SA_RESTORER) + restorer = ksig->ka.sa.sa_restorer; err |= __put_user(restorer, &frame->pretcode); err |= __put_user(sig, &frame->sig); err |= __put_user(&frame->info, &frame->pinfo); err |= __put_user(&frame->uc, &frame->puc); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); err |= copy_ucontext_to_user(&frame->uc, &frame->fpstate, mask, PT_REGS_SP(regs)); @@ -457,7 +455,7 @@ int setup_signal_stack_si(unsigned long stack_top, int sig, return err; PT_REGS_SP(regs) = (unsigned long) frame; - PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler; + PT_REGS_IP(regs) = (unsigned long) ksig->ka.sa.sa_handler; PT_REGS_AX(regs) = (unsigned long) sig; PT_REGS_DX(regs) = (unsigned long) &frame->info; PT_REGS_CX(regs) = (unsigned long) &frame->uc; @@ -502,12 +500,11 @@ struct rt_sigframe struct _fpstate fpstate; }; -int setup_signal_stack_si(unsigned long stack_top, int sig, - struct k_sigaction *ka, struct pt_regs * regs, - siginfo_t *info, sigset_t *set) +int setup_signal_stack_si(unsigned long stack_top, struct ksignal *ksig, + struct pt_regs *regs, sigset_t *set) { struct rt_sigframe __user *frame; - int err = 0; + int err = 0, sig = ksig->sig; frame = (struct rt_sigframe __user *) round_down(stack_top - sizeof(struct rt_sigframe), 16); @@ -517,8 +514,8 @@ int setup_signal_stack_si(unsigned long stack_top, int sig, if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) goto out; - if (ka->sa.sa_flags & SA_SIGINFO) { - err |= copy_siginfo_to_user(&frame->info, info); + if (ksig->ka.sa.sa_flags & SA_SIGINFO) { + err |= copy_siginfo_to_user(&frame->info, &ksig->info); if (err) goto out; } @@ -543,8 +540,8 @@ int setup_signal_stack_si(unsigned long stack_top, int sig, * already in userspace. */ /* x86-64 should always use SA_RESTORER. */ - if (ka->sa.sa_flags & SA_RESTORER) - err |= __put_user(ka->sa.sa_restorer, &frame->pretcode); + if (ksig->ka.sa.sa_flags & SA_RESTORER) + err |= __put_user(ksig->ka.sa.sa_restorer, &frame->pretcode); else /* could use a vstub here */ return err; @@ -570,7 +567,7 @@ int setup_signal_stack_si(unsigned long stack_top, int sig, */ PT_REGS_SI(regs) = (unsigned long) &frame->info; PT_REGS_DX(regs) = (unsigned long) &frame->uc; - PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler; + PT_REGS_IP(regs) = (unsigned long) ksig->ka.sa.sa_handler; out: return err; } diff --git a/arch/xtensa/kernel/signal.c b/arch/xtensa/kernel/signal.c index 98b67d5f1514..4612321c73cc 100644 --- a/arch/xtensa/kernel/signal.c +++ b/arch/xtensa/kernel/signal.c @@ -331,17 +331,17 @@ gen_return_code(unsigned char *codemem) } -static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +static int setup_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { struct rt_sigframe *frame; - int err = 0; + int err = 0, sig = ksig->sig; int signal; unsigned long sp, ra, tp; sp = regs->areg[1]; - if ((ka->sa.sa_flags & SA_ONSTACK) != 0 && sas_ss_flags(sp) == 0) { + if ((ksig->ka.sa.sa_flags & SA_ONSTACK) != 0 && sas_ss_flags(sp) == 0) { sp = current->sas_ss_sp + current->sas_ss_size; } @@ -351,7 +351,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info, panic ("Double exception sys_sigreturn\n"); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) { - goto give_sigsegv; + return -EFAULT; } signal = current_thread_info()->exec_domain @@ -360,8 +360,8 @@ static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info, ? current_thread_info()->exec_domain->signal_invmap[sig] : sig; - if (ka->sa.sa_flags & SA_SIGINFO) { - err |= copy_siginfo_to_user(&frame->info, info); + if (ksig->ka.sa.sa_flags & SA_SIGINFO) { + err |= copy_siginfo_to_user(&frame->info, &ksig->info); } /* Create the user context. */ @@ -372,8 +372,8 @@ static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= setup_sigcontext(frame, regs); err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); - if (ka->sa.sa_flags & SA_RESTORER) { - ra = (unsigned long)ka->sa.sa_restorer; + if (ksig->ka.sa.sa_flags & SA_RESTORER) { + ra = (unsigned long)ksig->ka.sa.sa_restorer; } else { /* Create sys_rt_sigreturn syscall in stack frame */ @@ -381,7 +381,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= gen_return_code(frame->retcode); if (err) { - goto give_sigsegv; + return -EFAULT; } ra = (unsigned long) frame->retcode; } @@ -393,7 +393,7 @@ static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info, /* Set up registers for signal handler; preserve the threadptr */ tp = regs->threadptr; - start_thread(regs, (unsigned long) ka->sa.sa_handler, + start_thread(regs, (unsigned long) ksig->ka.sa.sa_handler, (unsigned long) frame); /* Set up a stack frame for a call4 @@ -416,10 +416,6 @@ static int setup_frame(int sig, struct k_sigaction *ka, siginfo_t *info, #endif return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } /* @@ -433,15 +429,11 @@ give_sigsegv: */ static void do_signal(struct pt_regs *regs) { - siginfo_t info; - int signr; - struct k_sigaction ka; + struct ksignal ksig; task_pt_regs(current)->icountlevel = 0; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - - if (signr > 0) { + if (get_signal(&ksig)) { int ret; /* Are we from a system call? */ @@ -457,7 +449,7 @@ static void do_signal(struct pt_regs *regs) break; case -ERESTARTSYS: - if (!(ka.sa.sa_flags & SA_RESTART)) { + if (!(ksig.ka.sa.sa_flags & SA_RESTART)) { regs->areg[2] = -EINTR; break; } @@ -476,11 +468,8 @@ static void do_signal(struct pt_regs *regs) /* Whee! Actually deliver the signal. */ /* Set up the stack frame */ - ret = setup_frame(signr, &ka, &info, sigmask_to_save(), regs); - if (ret) - return; - - signal_delivered(signr, &info, &ka, regs, 0); + ret = setup_frame(&ksig, sigmask_to_save(), regs); + signal_setup_done(ret, &ksig, 0); if (current->ptrace & PT_SINGLESTEP) task_pt_regs(current)->icountlevel = 1; |