diff options
Diffstat (limited to 'arch/mips/kernel/scall64-o32.S')
| -rw-r--r-- | arch/mips/kernel/scall64-o32.S | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S index c5b759e584c7..f4f28b1580de 100644 --- a/arch/mips/kernel/scall64-o32.S +++ b/arch/mips/kernel/scall64-o32.S @@ -52,9 +52,6 @@ NESTED(handle_sys, PT_SIZE, sp) sll a2, a2, 0 sll a3, a3, 0 - dsll t0, v0, 3 # offset into table - ld t2, (sys32_call_table - (__NR_O32_Linux * 8))(t0) - sd a3, PT_R26(sp) # save a3 for syscall restarting /* @@ -88,6 +85,9 @@ loads_done: bnez t0, trace_a_syscall syscall_common: + dsll t0, v0, 3 # offset into table + ld t2, (sys32_call_table - (__NR_O32_Linux * 8))(t0) + jalr t2 # Do The Real Thing (TM) li t0, -EMAXERRNO - 1 # error? @@ -112,7 +112,6 @@ trace_a_syscall: sd a6, PT_R10(sp) sd a7, PT_R11(sp) # For indirect syscalls - move s0, t2 # Save syscall pointer move a0, sp /* * absolute syscall number is in v0 unless we called syscall(__NR_###) @@ -133,8 +132,8 @@ trace_a_syscall: bltz v0, 1f # seccomp failed? Skip syscall - move t2, s0 RESTORE_STATIC + ld v0, PT_R2(sp) # Restore syscall (maybe modified) ld a0, PT_R4(sp) # Restore argument registers ld a1, PT_R5(sp) ld a2, PT_R6(sp) @@ -143,6 +142,11 @@ trace_a_syscall: ld a5, PT_R9(sp) ld a6, PT_R10(sp) ld a7, PT_R11(sp) # For indirect syscalls + + dsubu t0, v0, __NR_O32_Linux # check (new) syscall number + sltiu t0, t0, __NR_O32_Linux_syscalls + 1 + beqz t0, not_o32_scall + j syscall_common 1: j syscall_exit @@ -579,4 +583,6 @@ EXPORT(sys32_call_table) PTR sys_membarrier PTR sys_mlock2 PTR sys_copy_file_range /* 4360 */ + PTR compat_sys_preadv2 + PTR compat_sys_pwritev2 .size sys32_call_table,.-sys32_call_table |