diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-10-12 12:39:30 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-10-12 12:39:50 +0200 |
commit | 4c7145a1ec1bb789d5f07e47510e8bda546a7c4a (patch) | |
tree | e2767b77e5413473a3bba302237f4669a203f183 /arch/mips/include/asm/stacktrace.h | |
parent | 74e91604b2452c15bbe72d77b37cf47ed0310d13 (diff) | |
parent | fd048088306656824958e7783ffcee27e241b361 (diff) |
Merge branch 'linus' into x86/spinlocks
Done to prevent this failure of an Octopus merge:
Added arch/arm/include/asm/byteorder.h in both, but differently.
ERROR: Merge conflict in arch/arm/include/asm/byteorder.h
Auto-merging include/asm-x86/spinlock.h
ERROR: Merge conflict in include/asm-x86/spinlock.h
fatal: merge program failed
Diffstat (limited to 'arch/mips/include/asm/stacktrace.h')
-rw-r--r-- | arch/mips/include/asm/stacktrace.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/mips/include/asm/stacktrace.h b/arch/mips/include/asm/stacktrace.h new file mode 100644 index 000000000000..0bf82818aa53 --- /dev/null +++ b/arch/mips/include/asm/stacktrace.h @@ -0,0 +1,48 @@ +#ifndef _ASM_STACKTRACE_H +#define _ASM_STACKTRACE_H + +#include <asm/ptrace.h> + +#ifdef CONFIG_KALLSYMS +extern int raw_show_trace; +extern unsigned long unwind_stack(struct task_struct *task, unsigned long *sp, + unsigned long pc, unsigned long *ra); +#else +#define raw_show_trace 1 +static inline unsigned long unwind_stack(struct task_struct *task, + unsigned long *sp, unsigned long pc, unsigned long *ra) +{ + return 0; +} +#endif + +static __always_inline void prepare_frametrace(struct pt_regs *regs) +{ +#ifndef CONFIG_KALLSYMS + /* + * Remove any garbage that may be in regs (specially func + * addresses) to avoid show_raw_backtrace() to report them + */ + memset(regs, 0, sizeof(*regs)); +#endif + __asm__ __volatile__( + ".set push\n\t" + ".set noat\n\t" +#ifdef CONFIG_64BIT + "1: dla $1, 1b\n\t" + "sd $1, %0\n\t" + "sd $29, %1\n\t" + "sd $31, %2\n\t" +#else + "1: la $1, 1b\n\t" + "sw $1, %0\n\t" + "sw $29, %1\n\t" + "sw $31, %2\n\t" +#endif + ".set pop\n\t" + : "=m" (regs->cp0_epc), + "=m" (regs->regs[29]), "=m" (regs->regs[31]) + : : "memory"); +} + +#endif /* _ASM_STACKTRACE_H */ |