diff options
Diffstat (limited to 'arch/mips/kernel/scall64-64.S')
| -rw-r--r-- | arch/mips/kernel/scall64-64.S | 152 |
1 files changed, 51 insertions, 101 deletions
diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S index 2b73fd1e452..be2fedd4ae3 100644 --- a/arch/mips/kernel/scall64-64.S +++ b/arch/mips/kernel/scall64-64.S @@ -25,7 +25,7 @@ #define handle_sys64 handle_sys #endif - .align 5 + .align 5 NESTED(handle_sys64, PT_SIZE, sp) #if !defined(CONFIG_MIPS32_O32) && !defined(CONFIG_MIPS32_N32) /* @@ -40,7 +40,7 @@ NESTED(handle_sys64, PT_SIZE, sp) #endif dsubu t0, v0, __NR_64_Linux # check syscall number - sltiu t0, t0, __NR_64_Linux_syscalls + 1 + sltiu t0, t0, __NR_64_Linux_syscalls + 1 #if !defined(CONFIG_MIPS32_O32) && !defined(CONFIG_MIPS32_N32) ld t1, PT_EPC(sp) # skip syscall on return daddiu t1, 4 # skip to next instruction @@ -54,7 +54,7 @@ NESTED(handle_sys64, PT_SIZE, sp) sd a3, PT_R26(sp) # save a3 for syscall restarting - 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, syscall_trace_entry @@ -66,24 +66,13 @@ NESTED(handle_sys64, PT_SIZE, sp) sd t0, PT_R7(sp) # set error flag beqz t0, 1f + ld t1, PT_R2(sp) # syscall number dnegu v0 # error - sd v0, PT_R0(sp) # set flag for syscall - # restarting + sd t1, PT_R0(sp) # save it for syscall restarting 1: sd v0, PT_R2(sp) # result n64_syscall_exit: - local_irq_disable # make sure need_resched and - # signals dont change between - # sampling and return - LONG_L a2, TI_FLAGS($28) # current->work - li t0, _TIF_ALLWORK_MASK - and t0, a2, t0 - bnez t0, n64_syscall_exit_work - - j restore_partial - -n64_syscall_exit_work: - j syscall_exit_work_partial + j syscall_exit_partial /* ------------------------------------------------------------------------ */ @@ -91,8 +80,10 @@ syscall_trace_entry: SAVE_STATIC move s0, t2 move a0, sp - li a1, 0 - jal do_syscall_trace + daddiu a1, v0, __NR_64_Linux + jal syscall_trace_enter + + bltz v0, 2f # seccomp failed? Skip syscall move t0, s0 RESTORE_STATIC @@ -109,95 +100,25 @@ syscall_trace_entry: sd t0, PT_R7(sp) # set error flag beqz t0, 1f + ld t1, PT_R2(sp) # syscall number dnegu v0 # error - sd v0, PT_R0(sp) # set flag for syscall restarting + sd t1, PT_R0(sp) # save it for syscall restarting 1: sd v0, PT_R2(sp) # result - j syscall_exit +2: j syscall_exit illegal_syscall: /* This also isn't a 64-bit syscall, throw an error. */ - li v0, -ENOSYS # error + li v0, ENOSYS # error sd v0, PT_R2(sp) li t0, 1 # set error flag sd t0, PT_R7(sp) j n64_syscall_exit END(handle_sys64) - LEAF(mips_atomic_set) - andi v0, a1, 3 # must be word aligned - bnez v0, bad_alignment - - LONG_L v1, TI_ADDR_LIMIT($28) # in legal address range? - LONG_ADDIU a0, a1, 4 - or a0, a0, a1 - and a0, a0, v1 - bltz a0, bad_address - -#ifdef CONFIG_CPU_HAS_LLSC - /* Ok, this is the ll/sc case. World is sane :-) */ -1: ll v0, (a1) - move a0, a2 -2: sc a0, (a1) -#if R10000_LLSC_WAR - beqzl a0, 1b -#else - beqz a0, 1b -#endif - - .section __ex_table,"a" - PTR 1b, bad_stack - PTR 2b, bad_stack - .previous -#else - sw a1, 16(sp) - sw a2, 20(sp) - - move a0, sp - move a2, a1 - li a1, 1 - jal do_page_fault - - lw a1, 16(sp) - lw a2, 20(sp) - - /* - * At this point the page should be readable and writable unless - * there was no more memory available. - */ -1: lw v0, (a1) -2: sw a2, (a1) - - .section __ex_table,"a" - PTR 1b, no_mem - PTR 2b, no_mem - .previous -#endif - - sd zero, PT_R7(sp) # success - sd v0, PT_R2(sp) # result - - j n64_syscall_exit # continue like a normal syscall - -no_mem: li v0, -ENOMEM - jr ra - -bad_address: - li v0, -EFAULT - jr ra - -bad_alignment: - li v0, -EINVAL - jr ra - END(mips_atomic_set) - - LEAF(sys_sysmips) - beq a0, MIPS_ATOMIC_SET, mips_atomic_set - j _sys_sysmips - END(sys_sysmips) - .align 3 -sys_call_table: + .type sys_call_table, @object +EXPORT(sys_call_table) PTR sys_read /* 5000 */ PTR sys_write PTR sys_open @@ -207,7 +128,7 @@ sys_call_table: PTR sys_newlstat PTR sys_poll PTR sys_lseek - PTR old_mmap + PTR sys_mips_mmap PTR sys_mprotect /* 5010 */ PTR sys_munmap PTR sys_brk @@ -253,8 +174,8 @@ sys_call_table: PTR sys_socketpair PTR sys_setsockopt PTR sys_getsockopt - PTR sys_clone /* 5055 */ - PTR sys_fork + PTR __sys_clone /* 5055 */ + PTR __sys_fork PTR sys_execve PTR sys_exit PTR sys_wait4 @@ -371,9 +292,9 @@ sys_call_table: PTR sys_ni_syscall /* 5170, was get_kernel_syms */ PTR sys_ni_syscall /* was query_module */ PTR sys_quotactl - PTR sys_nfsservctl + PTR sys_ni_syscall /* was nfsservctl */ PTR sys_ni_syscall /* res. for getpmsg */ - PTR sys_ni_syscall /* 5175 for putpmsg */ + PTR sys_ni_syscall /* 5175 for putpmsg */ PTR sys_ni_syscall /* res. for afs_syscall */ PTR sys_ni_syscall /* res. for security */ PTR sys_gettid @@ -475,10 +396,39 @@ sys_call_table: PTR sys_ioprio_get PTR sys_utimensat /* 5275 */ PTR sys_signalfd - PTR sys_ni_syscall + PTR sys_ni_syscall /* was timerfd */ PTR sys_eventfd PTR sys_fallocate PTR sys_timerfd_create /* 5280 */ PTR sys_timerfd_gettime PTR sys_timerfd_settime + PTR sys_signalfd4 + PTR sys_eventfd2 + PTR sys_epoll_create1 /* 5285 */ + PTR sys_dup3 + PTR sys_pipe2 + PTR sys_inotify_init1 + PTR sys_preadv + PTR sys_pwritev /* 5290 */ + PTR sys_rt_tgsigqueueinfo + PTR sys_perf_event_open + PTR sys_accept4 + PTR sys_recvmmsg + PTR sys_fanotify_init /* 5295 */ + PTR sys_fanotify_mark + PTR sys_prlimit64 + PTR sys_name_to_handle_at + PTR sys_open_by_handle_at + PTR sys_clock_adjtime /* 5300 */ + PTR sys_syncfs + PTR sys_sendmmsg + PTR sys_setns + PTR sys_process_vm_readv + PTR sys_process_vm_writev /* 5305 */ + PTR sys_kcmp + PTR sys_finit_module + PTR sys_getdents64 + PTR sys_sched_setattr + PTR sys_sched_getattr /* 5310 */ + PTR sys_renameat2 .size sys_call_table,.-sys_call_table |