diff options
Diffstat (limited to 'arch/mips/kernel/scall64-o32.S')
| -rw-r--r-- | arch/mips/kernel/scall64-o32.S | 40 |
1 files changed, 28 insertions, 12 deletions
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S index af8887f779f..f1343ccd7ed 100644 --- a/arch/mips/kernel/scall64-o32.S +++ b/arch/mips/kernel/scall64-o32.S @@ -53,7 +53,7 @@ NESTED(handle_sys, PT_SIZE, sp) sll a3, a3, 0 dsll t0, v0, 3 # offset into table - ld t2, (sys_call_table - (__NR_O32_Linux * 8))(t0) + ld t2, (sys32_call_table - (__NR_O32_Linux * 8))(t0) sd a3, PT_R26(sp) # save a3 for syscall restarting @@ -81,7 +81,7 @@ NESTED(handle_sys, PT_SIZE, sp) PTR 4b, bad_stack .previous - li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT + li t1, _TIF_WORK_SYSCALL_ENTRY LONG_L t0, TI_FLAGS($28) # syscall tracing enabled? and t0, t1, t0 bnez t0, trace_a_syscall @@ -112,7 +112,20 @@ trace_a_syscall: move s0, t2 # Save syscall pointer move a0, sp - jal syscall_trace_enter + /* + * syscall number is in v0 unless we called syscall(__NR_###) + * where the real syscall number is in a0 + * note: NR_syscall is the first O32 syscall but the macro is + * only defined when compiling with -mabi=32 (CONFIG_32BIT) + * therefore __NR_O32_Linux is used (4000) + */ + addiu a1, v0, __NR_O32_Linux + bnez v0, 1f /* __NR_syscall at offset 0 */ + lw a1, PT_R4(sp) + +1: jal syscall_trace_enter + + bltz v0, 2f # seccomp failed? Skip syscall move t0, s0 RESTORE_STATIC @@ -136,7 +149,7 @@ trace_a_syscall: sd t1, PT_R0(sp) # save it for syscall restarting 1: sd v0, PT_R2(sp) # result - j syscall_exit +2: j syscall_exit /* ------------------------------------------------------------------------ */ @@ -168,7 +181,7 @@ LEAF(sys32_syscall) beqz t0, einval # do not recurse dsll t1, t0, 3 beqz v0, einval - ld t2, sys_call_table(t1) # syscall routine + ld t2, sys32_call_table(t1) # syscall routine move a0, a1 # shift argument registers move a1, a2 @@ -190,8 +203,8 @@ einval: li v0, -ENOSYS END(sys32_syscall) .align 3 - .type sys_call_table,@object -sys_call_table: + .type sys32_call_table,@object +EXPORT(sys32_call_table) PTR sys32_syscall /* 4000 */ PTR sys_exit PTR __sys_fork @@ -309,7 +322,7 @@ sys_call_table: PTR compat_sys_wait4 PTR sys_swapoff /* 4115 */ PTR compat_sys_sysinfo - PTR sys_32_ipc + PTR compat_sys_ipc PTR sys_fsync PTR sys32_sigreturn PTR __sys_clone /* 4120 */ @@ -399,7 +412,7 @@ sys_call_table: PTR sys_capget PTR sys_capset /* 4205 */ PTR compat_sys_sigaltstack - PTR sys_32_sendfile + PTR compat_sys_sendfile PTR sys_ni_syscall PTR sys_ni_syscall PTR sys_mips_mmap2 /* 4210 */ @@ -439,7 +452,7 @@ sys_call_table: PTR compat_sys_io_submit PTR sys_io_cancel /* 4245 */ PTR sys_exit_group - PTR sys32_lookup_dcookie + PTR compat_sys_lookup_dcookie PTR sys_epoll_create PTR sys_epoll_ctl PTR sys_epoll_wait /* 4250 */ @@ -529,7 +542,7 @@ sys_call_table: PTR sys_accept4 PTR compat_sys_recvmmsg /* 4335 */ PTR sys_fanotify_init - PTR sys_32_fanotify_mark + PTR compat_sys_fanotify_mark PTR sys_prlimit64 PTR sys_name_to_handle_at PTR compat_sys_open_by_handle_at /* 4340 */ @@ -541,4 +554,7 @@ sys_call_table: PTR compat_sys_process_vm_writev PTR sys_kcmp PTR sys_finit_module - .size sys_call_table,.-sys_call_table + PTR sys_sched_setattr + PTR sys_sched_getattr /* 4350 */ + PTR sys_renameat2 + .size sys32_call_table,.-sys32_call_table |