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authorTejun Heo <tj@kernel.org>2010-01-05 09:17:33 +0900
committerTejun Heo <tj@kernel.org>2010-01-05 09:17:33 +0900
commit32032df6c2f6c9c6b2ada2ce42322231824f70c2 (patch)
treeb1ce838a37044bb38dfc128e2116ca35630e629a /arch/x86/ia32/ia32entry.S
parent22b737f4c75197372d64afc6ed1bccd58c00e549 (diff)
parentc5974b835a909ff15c3b7e6cf6789b5eb919f419 (diff)
Merge branch 'master' into percpu
Conflicts: arch/powerpc/platforms/pseries/hvCall.S include/linux/percpu.h
Diffstat (limited to 'arch/x86/ia32/ia32entry.S')
-rw-r--r--arch/x86/ia32/ia32entry.S46
1 files changed, 28 insertions, 18 deletions
diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index 74619c4f9fd..53147ad85b9 100644
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -21,8 +21,8 @@
#define __AUDIT_ARCH_LE 0x40000000
#ifndef CONFIG_AUDITSYSCALL
-#define sysexit_audit int_ret_from_sys_call
-#define sysretl_audit int_ret_from_sys_call
+#define sysexit_audit ia32_ret_from_sys_call
+#define sysretl_audit ia32_ret_from_sys_call
#endif
#define IA32_NR_syscalls ((ia32_syscall_end - ia32_sys_call_table)/8)
@@ -39,12 +39,12 @@
.endm
/* clobbers %eax */
- .macro CLEAR_RREGS _r9=rax
+ .macro CLEAR_RREGS offset=0, _r9=rax
xorl %eax,%eax
- movq %rax,R11(%rsp)
- movq %rax,R10(%rsp)
- movq %\_r9,R9(%rsp)
- movq %rax,R8(%rsp)
+ movq %rax,\offset+R11(%rsp)
+ movq %rax,\offset+R10(%rsp)
+ movq %\_r9,\offset+R9(%rsp)
+ movq %rax,\offset+R8(%rsp)
.endm
/*
@@ -172,6 +172,10 @@ sysexit_from_sys_call:
movl RIP-R11(%rsp),%edx /* User %eip */
CFI_REGISTER rip,rdx
RESTORE_ARGS 1,24,1,1,1,1
+ xorq %r8,%r8
+ xorq %r9,%r9
+ xorq %r10,%r10
+ xorq %r11,%r11
popfq
CFI_ADJUST_CFA_OFFSET -8
/*CFI_RESTORE rflags*/
@@ -200,9 +204,9 @@ sysexit_from_sys_call:
movl RDI-ARGOFFSET(%rsp),%r8d /* reload 5th syscall arg */
.endm
- .macro auditsys_exit exit,ebpsave=RBP
+ .macro auditsys_exit exit
testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10)
- jnz int_ret_from_sys_call
+ jnz ia32_ret_from_sys_call
TRACE_IRQS_ON
sti
movl %eax,%esi /* second arg, syscall return value */
@@ -213,13 +217,13 @@ sysexit_from_sys_call:
call audit_syscall_exit
GET_THREAD_INFO(%r10)
movl RAX-ARGOFFSET(%rsp),%eax /* reload syscall return value */
- movl \ebpsave-ARGOFFSET(%rsp),%ebp /* reload user register value */
movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi
cli
TRACE_IRQS_OFF
testl %edi,TI_flags(%r10)
- jnz int_with_check
- jmp \exit
+ jz \exit
+ CLEAR_RREGS -ARGOFFSET
+ jmp int_with_check
.endm
sysenter_auditsys:
@@ -329,6 +333,9 @@ sysretl_from_sys_call:
CFI_REGISTER rip,rcx
movl EFLAGS-ARGOFFSET(%rsp),%r11d
/*CFI_REGISTER rflags,r11*/
+ xorq %r10,%r10
+ xorq %r9,%r9
+ xorq %r8,%r8
TRACE_IRQS_ON
movl RSP-ARGOFFSET(%rsp),%esp
CFI_RESTORE rsp
@@ -343,7 +350,7 @@ cstar_auditsys:
jmp cstar_dispatch
sysretl_audit:
- auditsys_exit sysretl_from_sys_call, RCX /* user %ebp in RCX slot */
+ auditsys_exit sysretl_from_sys_call
#endif
cstar_tracesys:
@@ -353,7 +360,7 @@ cstar_tracesys:
#endif
xchgl %r9d,%ebp
SAVE_REST
- CLEAR_RREGS r9
+ CLEAR_RREGS 0, r9
movq $-ENOSYS,RAX(%rsp) /* ptrace can change this for a bad syscall */
movq %rsp,%rdi /* &pt_regs -> arg1 */
call syscall_trace_enter
@@ -425,6 +432,8 @@ ia32_do_call:
call *ia32_sys_call_table(,%rax,8) # xxx: rip relative
ia32_sysret:
movq %rax,RAX-ARGOFFSET(%rsp)
+ia32_ret_from_sys_call:
+ CLEAR_RREGS -ARGOFFSET
jmp int_ret_from_sys_call
ia32_tracesys:
@@ -442,8 +451,8 @@ END(ia32_syscall)
ia32_badsys:
movq $0,ORIG_RAX-ARGOFFSET(%rsp)
- movq $-ENOSYS,RAX-ARGOFFSET(%rsp)
- jmp int_ret_from_sys_call
+ movq $-ENOSYS,%rax
+ jmp ia32_sysret
quiet_ni_syscall:
movq $-ENOSYS,%rax
@@ -644,7 +653,7 @@ ia32_sys_call_table:
.quad compat_sys_writev
.quad sys_getsid
.quad sys_fdatasync
- .quad sys32_sysctl /* sysctl */
+ .quad compat_sys_sysctl /* sysctl */
.quad sys_mlock /* 150 */
.quad sys_munlock
.quad sys_mlockall
@@ -687,7 +696,7 @@ ia32_sys_call_table:
.quad quiet_ni_syscall /* streams2 */
.quad stub32_vfork /* 190 */
.quad compat_sys_getrlimit
- .quad sys32_mmap2
+ .quad sys_mmap_pgoff
.quad sys32_truncate64
.quad sys32_ftruncate64
.quad sys32_stat64 /* 195 */
@@ -832,4 +841,5 @@ ia32_sys_call_table:
.quad compat_sys_pwritev
.quad compat_sys_rt_tgsigqueueinfo /* 335 */
.quad sys_perf_event_open
+ .quad compat_sys_recvmmsg
ia32_syscall_end: