diff options
author | Qi Hu <huqi@loongson.cn> | 2023-09-06 22:53:55 +0800 |
---|---|---|
committer | Huacai Chen <chenhuacai@loongson.cn> | 2023-09-06 22:53:55 +0800 |
commit | bd3c5798484aa9a08302a844d7a75a2ee3b53d05 (patch) | |
tree | 338b637a5062d6a6e97b342691b2969a4ef3bd80 /arch/loongarch/kernel/asm-offsets.c | |
parent | f2091321044d9fbcadb93dfc1c9cf23e563ea40c (diff) |
LoongArch: Add Loongson Binary Translation (LBT) extension support
Loongson Binary Translation (LBT) is used to accelerate binary translation,
which contains 4 scratch registers (scr0 to scr3), x86/ARM eflags (eflags)
and x87 fpu stack pointer (ftop).
This patch support kernel to save/restore these registers, handle the LBT
exception and maintain sigcontext.
Signed-off-by: Qi Hu <huqi@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/kernel/asm-offsets.c')
-rw-r--r-- | arch/loongarch/kernel/asm-offsets.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/arch/loongarch/kernel/asm-offsets.c b/arch/loongarch/kernel/asm-offsets.c index 505e4bf59603..8da0726777ed 100644 --- a/arch/loongarch/kernel/asm-offsets.c +++ b/arch/loongarch/kernel/asm-offsets.c @@ -118,13 +118,6 @@ void output_thread_defines(void) OFFSET(THREAD_CSRECFG, task_struct, thread.csr_ecfg); - OFFSET(THREAD_SCR0, task_struct, thread.scr0); - OFFSET(THREAD_SCR1, task_struct, thread.scr1); - OFFSET(THREAD_SCR2, task_struct, thread.scr2); - OFFSET(THREAD_SCR3, task_struct, thread.scr3); - - OFFSET(THREAD_EFLAGS, task_struct, thread.eflags); - OFFSET(THREAD_FPU, task_struct, thread.fpu); OFFSET(THREAD_BVADDR, task_struct, \ @@ -172,6 +165,17 @@ void output_thread_fpu_defines(void) OFFSET(THREAD_FCSR, loongarch_fpu, fcsr); OFFSET(THREAD_FCC, loongarch_fpu, fcc); + OFFSET(THREAD_FTOP, loongarch_fpu, ftop); + BLANK(); +} + +void output_thread_lbt_defines(void) +{ + OFFSET(THREAD_SCR0, loongarch_lbt, scr0); + OFFSET(THREAD_SCR1, loongarch_lbt, scr1); + OFFSET(THREAD_SCR2, loongarch_lbt, scr2); + OFFSET(THREAD_SCR3, loongarch_lbt, scr3); + OFFSET(THREAD_EFLAGS, loongarch_lbt, eflags); BLANK(); } |