diff options
Diffstat (limited to 'arch/mips/kernel/scall32-o32.S')
| -rw-r--r-- | arch/mips/kernel/scall32-o32.S | 50 |
1 files changed, 25 insertions, 25 deletions
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S index d9434cd0f568..4947a4f39e37 100644 --- a/arch/mips/kernel/scall32-o32.S +++ b/arch/mips/kernel/scall32-o32.S @@ -19,7 +19,6 @@ #include <asm/sysmips.h> #include <asm/thread_info.h> #include <asm/unistd.h> -#include <asm/war.h> #include <asm/asm-offsets.h> .align 5 @@ -48,10 +47,8 @@ NESTED(handle_sys, PT_SIZE, sp) * We intentionally keep the kernel stack a little below the top of * userspace so we don't have to do a slower byte accurate check here. */ - lw t5, TI_ADDR_LIMIT($28) addu t4, t0, 32 - and t5, t4 - bltz t5, bad_stack # -> sp is bad + bltz t4, bad_stack # -> sp is bad /* * Ok, copy the args from the luser stack to the kernel stack. @@ -67,19 +64,31 @@ load_a6: user_lw(t7, 24(t0)) # argument #7 from usp load_a7: user_lw(t8, 28(t0)) # argument #8 from usp loads_done: - sw t5, 16(sp) # argument #5 to ksp - sw t6, 20(sp) # argument #6 to ksp - sw t7, 24(sp) # argument #7 to ksp - sw t8, 28(sp) # argument #8 to ksp + sw t5, PT_ARG4(sp) # argument #5 to ksp + sw t6, PT_ARG5(sp) # argument #6 to ksp + sw t7, PT_ARG6(sp) # argument #7 to ksp + sw t8, PT_ARG7(sp) # argument #8 to ksp .set pop .section __ex_table,"a" - PTR load_a4, bad_stack_a4 - PTR load_a5, bad_stack_a5 - PTR load_a6, bad_stack_a6 - PTR load_a7, bad_stack_a7 + PTR_WD load_a4, bad_stack_a4 + PTR_WD load_a5, bad_stack_a5 + PTR_WD load_a6, bad_stack_a6 + PTR_WD load_a7, bad_stack_a7 .previous + /* + * syscall number is in v0 unless we called syscall(__NR_###) + * where the real syscall number is in a0 + */ + subu t2, v0, __NR_O32_Linux + bnez t2, 1f /* __NR_syscall at offset 0 */ + LONG_S a0, TI_SYSCALL($28) # Save a0 as syscall number + b 2f +1: + LONG_S v0, TI_SYSCALL($28) # Save v0 as syscall number +2: + lw t0, TI_FLAGS($28) # syscall tracing enabled? li t1, _TIF_WORK_SYSCALL_ENTRY and t0, t1 @@ -117,16 +126,7 @@ syscall_trace_entry: SAVE_STATIC move a0, sp - /* - * syscall number is in v0 unless we called syscall(__NR_###) - * where the real syscall number is in a0 - */ - move a1, v0 - subu t2, v0, __NR_O32_Linux - bnez t2, 1f /* __NR_syscall at offset 0 */ - lw a1, PT_R4(sp) - -1: jal syscall_trace_enter + jal syscall_trace_enter bltz v0, 1f # seccomp failed? Skip syscall @@ -217,9 +217,9 @@ einval: li v0, -ENOSYS #define sys_sched_getaffinity mipsmt_sys_sched_getaffinity #endif /* CONFIG_MIPS_MT_FPAFF */ -#define __SYSCALL(nr, entry, nargs) PTR entry +#define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, native) +#define __SYSCALL(nr, entry) PTR_WD entry .align 2 .type sys_call_table, @object EXPORT(sys_call_table) -#include <asm/syscall_table_32_o32.h> -#undef __SYSCALL +#include <asm/syscall_table_o32.h> |