* Copyright (C) 1995 - 2000, 2001 by Ralf Baechle
* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
* Copyright (C) 2001 MIPS Technologies, Inc.
+ * Copyright (C) 2004 Thiemo Seufer
*
* Hairy, the userspace application uses a different argument passing
* convention than the kernel, so we have to translate things from o32
RESTORE_ALL
#endif
+ /* We don't want to stumble over broken sign extensions from
+ userland. O32 does never use the upper half. */
sll a0, a0, 0
sll a1, a1, 0
sll a2, a2, 0
1: lw a4, 16(t0) # argument #5 from usp
2: lw a5, 20(t0) # argument #6 from usp
3: lw a6, 24(t0) # argument #7 from usp
+4: lw a7, 28(t0) # argument #8 from usp (for indirect syscalls)
.section __ex_table,"a"
PTR 1b, bad_stack
PTR 2b, bad_stack
PTR 3b, bad_stack
+ PTR 4b, bad_stack
.previous
li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
sd v0, PT_R0(sp) # flag for syscall restarting
1: sd v0, PT_R2(sp) # result
-FEXPORT(o32_syscall_exit)
+o32_syscall_exit:
local_irq_disable # make need_resched and
# signals dont change between
# sampling and return
trace_a_syscall:
SAVE_STATIC
- sd a4, PT_R8(sp)
+ sd a4, PT_R8(sp) # Save argument registers
sd a5, PT_R9(sp)
sd a6, PT_R10(sp)
- sd a7, PT_R11(sp)
+ sd a7, PT_R11(sp) # For indirect syscalls
- move s0, t2
+ move s0, t2 # Save syscall pointer
move a0, sp
li a1, 0
jal do_syscall_trace
+ move t0, s0
+ RESTORE_STATIC
ld a0, PT_R4(sp) # Restore argument registers
ld a1, PT_R5(sp)
ld a2, PT_R6(sp)
ld a3, PT_R7(sp)
ld a4, PT_R8(sp)
ld a5, PT_R9(sp)
- ld a6, PT_R10(sp) # For indirect syscalls
- jalr s0
+ ld a6, PT_R10(sp)
+ ld a7, PT_R11(sp) # For indirect syscalls
+ jalr t0
li t0, -EMAXERRNO - 1 # error?
sltu t0, t0, v0
#else
j handle_sys64
#endif
-
-illegal_syscall:
- /* This also isn't a 64-bit syscall, throw an error. */
- li v0, ENOSYS # error
- sd v0, PT_R2(sp)
- li t0, 1 # set error flag
- sd t0, PT_R7(sp)
- j o32_syscall_exit
END(handle_sys)
LEAF(sys32_syscall)
- ld t0, PT_R29(sp) # user sp
-
sltu v0, a0, __NR_O32_Linux + __NR_O32_Linux_syscalls + 1
- beqz v0, enosys
+ beqz v0, einval
dsll v0, a0, 3
- dla v1, sys32_syscall
ld t2, (sys_call_table - (__NR_O32_Linux * 8))(v0)
- li v0, -EINVAL
- beq t2, v1, out # do not recurse
-
- beqz t2, enosys # null function pointer?
-
- andi v0, t0, 0x3 # unaligned stack pointer?
- bnez v0, sigsegv
-
- daddiu v0, t0, 16 # v0 = usp + 16
- daddu t1, v0, 12 # 3 32-bit arguments
- ld v1, TI_ADDR_LIMIT($28)
- or v0, v0, t1
- and v1, v1, v0
- bnez v1, efault
+ li v1, 4000 # indirect syscall number
+ beq a0, v1, einval # do not recurse
move a0, a1 # shift argument registers
move a1, a2
move a3, a4
move a4, a5
move a5, a6
+ move a6, a7
+ sd a0, PT_R4(sp) # ... and push back a0 - a3, some
+ sd a1, PT_R5(sp) # syscalls expect them there
+ sd a2, PT_R6(sp)
+ sd a3, PT_R7(sp)
+ sd a3, PT_R26(sp) # update a3 for syscall restarting
jr t2
/* Unreached */
-enosys: li v0, -ENOSYS
- b out
-
-sigsegv:
- li a0, _SIGSEGV
- move a1, $28
- jal force_sig
- /* Fall through */
-
-efault: li v0, -EFAULT
-
-out: jr ra
+einval: li v0, -EINVAL
+ jr ra
END(sys32_syscall)
.align 3
- .type sys_call_table,@object;
+ .type sys_call_table,@object
sys_call_table:
PTR sys32_syscall /* 4000 */
PTR sys_exit
PTR sys_fork
PTR sys_read
PTR sys_write
- PTR sys_open /* 4005 */
+ PTR compat_sys_open /* 4005 */
PTR sys_close
PTR sys_waitpid
PTR sys_creat
PTR sys_unlink /* 4010 */
PTR sys32_execve
PTR sys_chdir
- PTR sys_time
+ PTR compat_sys_time
PTR sys_mknod
PTR sys_chmod /* 4015 */
PTR sys_lchown
PTR sys_oldumount
PTR sys_setuid
PTR sys_getuid
- PTR sys_stime /* 4025 */
+ PTR compat_sys_stime /* 4025 */
PTR sys32_ptrace
PTR sys_alarm
PTR sys_ni_syscall /* was sys_fstat */
PTR sys_uselib
PTR sys_swapon
PTR sys_reboot
- PTR sys32_readdir
+ PTR compat_sys_old_readdir
PTR old_mmap /* 4090 */
PTR sys_munmap
PTR sys_truncate
PTR sys_vhangup
PTR sys_ni_syscall /* was sys_idle */
PTR sys_ni_syscall /* sys_vm86 */
- PTR sys32_wait4
+ PTR compat_sys_wait4
PTR sys_swapoff /* 4115 */
PTR sys32_sysinfo
PTR sys32_ipc
PTR sys_fsync
PTR sys32_sigreturn
- PTR sys_clone /* 4120 */
+ PTR sys32_clone /* 4120 */
PTR sys_setdomainname
PTR sys32_newuname
PTR sys_ni_syscall /* sys_modify_ldt */
- PTR sys32_adjtimex
+ PTR compat_sys_adjtimex
PTR sys_mprotect /* 4125 */
PTR compat_sys_sigprocmask
PTR sys_ni_syscall /* was creat_module */
PTR sys_setfsuid
PTR sys_setfsgid
PTR sys32_llseek /* 4140 */
- PTR sys32_getdents
+ PTR compat_sys_getdents
PTR compat_sys_select
PTR sys_flock
PTR sys_msync
PTR sys_getresuid
PTR sys_ni_syscall /* was query_module */
PTR sys_poll
- PTR sys_nfsservctl
+ PTR compat_sys_nfsservctl
PTR sys_setresgid /* 4190 */
PTR sys_getresgid
PTR sys_prctl
PTR sys32_rt_sigaction
PTR sys32_rt_sigprocmask /* 4195 */
PTR sys32_rt_sigpending
- PTR sys32_rt_sigtimedwait
+ PTR compat_sys_rt_sigtimedwait
PTR sys32_rt_sigqueueinfo
PTR sys32_rt_sigsuspend
PTR sys32_pread /* 4200 */
PTR sys_fadvise64_64
PTR compat_sys_statfs64 /* 4255 */
PTR compat_sys_fstatfs64
- PTR sys_timer_create
+ PTR sys32_timer_create
PTR compat_sys_timer_settime
PTR compat_sys_timer_gettime
PTR sys_timer_getoverrun /* 4260 */
PTR compat_sys_mq_timedreceive
PTR compat_sys_mq_notify /* 4275 */
PTR compat_sys_mq_getsetattr
- PTR sys_ni_syscall /* sys_vserver */
- PTR sys_waitid
+ PTR sys32_vserver
+ PTR sys32_waitid
PTR sys_ni_syscall /* available, was setaltroot */
PTR sys_add_key /* 4280 */
PTR sys_request_key
PTR sys_keyctl
+ PTR sys_set_thread_area
+ PTR sys_inotify_init
+ PTR sys_inotify_add_watch /* 4285 */
+ PTR sys_inotify_rm_watch
+ PTR sys_migrate_pages
+ PTR compat_sys_openat
+ PTR sys_mkdirat
+ PTR sys_mknodat /* 4290 */
+ PTR sys_fchownat
+ PTR compat_sys_futimesat
+ PTR compat_sys_newfstatat
+ PTR sys_unlinkat
+ PTR sys_renameat /* 4295 */
+ PTR sys_linkat
+ PTR sys_symlinkat
+ PTR sys_readlinkat
+ PTR sys_fchmodat
+ PTR sys_faccessat /* 4300 */
+ PTR sys_pselect6
+ PTR sys_ppoll
+ PTR sys_unshare
+ PTR sys_splice
+ PTR sys32_sync_file_range /* 4305 */
.size sys_call_table,.-sys_call_table
git://git.onelab.eu / linux-2.6.git / blobdiff