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Merge /spare/repo/linux-2.6/
[cascardo/linux.git]
/
arch
/
x86_64
/
ia32
/
ia32entry.S
diff --git
a/arch/x86_64/ia32/ia32entry.S
b/arch/x86_64/ia32/ia32entry.S
index
c45d6a0
..
e0eb0c7
100644
(file)
--- a/
arch/x86_64/ia32/ia32entry.S
+++ b/
arch/x86_64/ia32/ia32entry.S
@@
-6,7
+6,7
@@
#include <asm/dwarf2.h>
#include <asm/calling.h>
#include <asm/dwarf2.h>
#include <asm/calling.h>
-#include <asm/
offset
.h>
+#include <asm/
asm-offsets
.h>
#include <asm/current.h>
#include <asm/errno.h>
#include <asm/ia32_unistd.h>
#include <asm/current.h>
#include <asm/errno.h>
#include <asm/ia32_unistd.h>
@@
-55,20
+55,34
@@
* with the int 0x80 path.
*/
ENTRY(ia32_sysenter_target)
* with the int 0x80 path.
*/
ENTRY(ia32_sysenter_target)
- CFI_STARTPROC
+ CFI_STARTPROC simple
+ CFI_DEF_CFA rsp,0
+ CFI_REGISTER rsp,rbp
swapgs
movq %gs:pda_kernelstack, %rsp
addq $(PDA_STACKOFFSET),%rsp
sti
movl %ebp,%ebp /* zero extension */
pushq $__USER32_DS
swapgs
movq %gs:pda_kernelstack, %rsp
addq $(PDA_STACKOFFSET),%rsp
sti
movl %ebp,%ebp /* zero extension */
pushq $__USER32_DS
+ CFI_ADJUST_CFA_OFFSET 8
+ /*CFI_REL_OFFSET ss,0*/
pushq %rbp
pushq %rbp
+ CFI_ADJUST_CFA_OFFSET 8
+ CFI_REL_OFFSET rsp,0
pushfq
pushfq
+ CFI_ADJUST_CFA_OFFSET 8
+ /*CFI_REL_OFFSET rflags,0*/
movl $VSYSCALL32_SYSEXIT, %r10d
movl $VSYSCALL32_SYSEXIT, %r10d
+ CFI_REGISTER rip,r10
pushq $__USER32_CS
pushq $__USER32_CS
+ CFI_ADJUST_CFA_OFFSET 8
+ /*CFI_REL_OFFSET cs,0*/
movl %eax, %eax
pushq %r10
movl %eax, %eax
pushq %r10
+ CFI_ADJUST_CFA_OFFSET 8
+ CFI_REL_OFFSET rip,0
pushq %rax
pushq %rax
+ CFI_ADJUST_CFA_OFFSET 8
cld
SAVE_ARGS 0,0,1
/* no need to do an access_ok check here because rbp has been
cld
SAVE_ARGS 0,0,1
/* no need to do an access_ok check here because rbp has been
@@
-79,6
+93,7
@@
ENTRY(ia32_sysenter_target)
.previous
GET_THREAD_INFO(%r10)
testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10)
.previous
GET_THREAD_INFO(%r10)
testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10)
+ CFI_REMEMBER_STATE
jnz sysenter_tracesys
sysenter_do_call:
cmpl $(IA32_NR_syscalls),%eax
jnz sysenter_tracesys
sysenter_do_call:
cmpl $(IA32_NR_syscalls),%eax
@@
-94,14
+109,20
@@
sysenter_do_call:
andl $~0x200,EFLAGS-R11(%rsp)
RESTORE_ARGS 1,24,1,1,1,1
popfq
andl $~0x200,EFLAGS-R11(%rsp)
RESTORE_ARGS 1,24,1,1,1,1
popfq
+ CFI_ADJUST_CFA_OFFSET -8
+ /*CFI_RESTORE rflags*/
popq %rcx /* User %esp */
popq %rcx /* User %esp */
+ CFI_ADJUST_CFA_OFFSET -8
+ CFI_REGISTER rsp,rcx
movl $VSYSCALL32_SYSEXIT,%edx /* User %eip */
movl $VSYSCALL32_SYSEXIT,%edx /* User %eip */
+ CFI_REGISTER rip,rdx
swapgs
sti /* sti only takes effect after the next instruction */
/* sysexit */
.byte 0xf, 0x35
sysenter_tracesys:
swapgs
sti /* sti only takes effect after the next instruction */
/* sysexit */
.byte 0xf, 0x35
sysenter_tracesys:
+ CFI_RESTORE_STATE
SAVE_REST
CLEAR_RREGS
movq $-ENOSYS,RAX(%rsp) /* really needed? */
SAVE_REST
CLEAR_RREGS
movq $-ENOSYS,RAX(%rsp) /* really needed? */
@@
-140,21
+161,28
@@
sysenter_tracesys:
* with the int 0x80 path.
*/
ENTRY(ia32_cstar_target)
* with the int 0x80 path.
*/
ENTRY(ia32_cstar_target)
- CFI_STARTPROC
+ CFI_STARTPROC simple
+ CFI_DEF_CFA rsp,0
+ CFI_REGISTER rip,rcx
+ /*CFI_REGISTER rflags,r11*/
swapgs
movl %esp,%r8d
swapgs
movl %esp,%r8d
+ CFI_REGISTER rsp,r8
movq %gs:pda_kernelstack,%rsp
sti
SAVE_ARGS 8,1,1
movl %eax,%eax /* zero extension */
movq %rax,ORIG_RAX-ARGOFFSET(%rsp)
movq %rcx,RIP-ARGOFFSET(%rsp)
movq %gs:pda_kernelstack,%rsp
sti
SAVE_ARGS 8,1,1
movl %eax,%eax /* zero extension */
movq %rax,ORIG_RAX-ARGOFFSET(%rsp)
movq %rcx,RIP-ARGOFFSET(%rsp)
+ CFI_REL_OFFSET rip,RIP-ARGOFFSET
movq %rbp,RCX-ARGOFFSET(%rsp) /* this lies slightly to ptrace */
movl %ebp,%ecx
movq $__USER32_CS,CS-ARGOFFSET(%rsp)
movq $__USER32_DS,SS-ARGOFFSET(%rsp)
movq %r11,EFLAGS-ARGOFFSET(%rsp)
movq %rbp,RCX-ARGOFFSET(%rsp) /* this lies slightly to ptrace */
movl %ebp,%ecx
movq $__USER32_CS,CS-ARGOFFSET(%rsp)
movq $__USER32_DS,SS-ARGOFFSET(%rsp)
movq %r11,EFLAGS-ARGOFFSET(%rsp)
+ /*CFI_REL_OFFSET rflags,EFLAGS-ARGOFFSET*/
movq %r8,RSP-ARGOFFSET(%rsp)
movq %r8,RSP-ARGOFFSET(%rsp)
+ CFI_REL_OFFSET rsp,RSP-ARGOFFSET
/* no need to do an access_ok check here because r8 has been
32bit zero extended */
/* hardware stack frame is complete now */
/* no need to do an access_ok check here because r8 has been
32bit zero extended */
/* hardware stack frame is complete now */
@@
-164,6
+192,7
@@
ENTRY(ia32_cstar_target)
.previous
GET_THREAD_INFO(%r10)
testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10)
.previous
GET_THREAD_INFO(%r10)
testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10)
+ CFI_REMEMBER_STATE
jnz cstar_tracesys
cstar_do_call:
cmpl $IA32_NR_syscalls,%eax
jnz cstar_tracesys
cstar_do_call:
cmpl $IA32_NR_syscalls,%eax
@@
-177,12
+206,16
@@
cstar_do_call:
jnz int_ret_from_sys_call
RESTORE_ARGS 1,-ARG_SKIP,1,1,1
movl RIP-ARGOFFSET(%rsp),%ecx
jnz int_ret_from_sys_call
RESTORE_ARGS 1,-ARG_SKIP,1,1,1
movl RIP-ARGOFFSET(%rsp),%ecx
+ CFI_REGISTER rip,rcx
movl EFLAGS-ARGOFFSET(%rsp),%r11d
movl EFLAGS-ARGOFFSET(%rsp),%r11d
+ /*CFI_REGISTER rflags,r11*/
movl RSP-ARGOFFSET(%rsp),%esp
movl RSP-ARGOFFSET(%rsp),%esp
+ CFI_RESTORE rsp
swapgs
sysretl
cstar_tracesys:
swapgs
sysretl
cstar_tracesys:
+ CFI_RESTORE_STATE
SAVE_REST
CLEAR_RREGS
movq $-ENOSYS,RAX(%rsp) /* really needed? */
SAVE_REST
CLEAR_RREGS
movq $-ENOSYS,RAX(%rsp) /* really needed? */
@@
-226,11
+259,18
@@
ia32_badarg:
*/
ENTRY(ia32_syscall)
*/
ENTRY(ia32_syscall)
- CFI_STARTPROC
+ CFI_STARTPROC simple
+ CFI_DEF_CFA rsp,SS+8-RIP
+ /*CFI_REL_OFFSET ss,SS-RIP*/
+ CFI_REL_OFFSET rsp,RSP-RIP
+ /*CFI_REL_OFFSET rflags,EFLAGS-RIP*/
+ /*CFI_REL_OFFSET cs,CS-RIP*/
+ CFI_REL_OFFSET rip,RIP-RIP
swapgs
sti
movl %eax,%eax
pushq %rax
swapgs
sti
movl %eax,%eax
pushq %rax
+ CFI_ADJUST_CFA_OFFSET 8
cld
/* note the registers are not zero extended to the sf.
this could be a problem. */
cld
/* note the registers are not zero extended to the sf.
this could be a problem. */
@@
-278,6
+318,8
@@
quiet_ni_syscall:
jmp ia32_ptregs_common
.endm
jmp ia32_ptregs_common
.endm
+ CFI_STARTPROC
+
PTREGSCALL stub32_rt_sigreturn, sys32_rt_sigreturn, %rdi
PTREGSCALL stub32_sigreturn, sys32_sigreturn, %rdi
PTREGSCALL stub32_sigaltstack, sys32_sigaltstack, %rdx
PTREGSCALL stub32_rt_sigreturn, sys32_rt_sigreturn, %rdi
PTREGSCALL stub32_sigreturn, sys32_sigreturn, %rdi
PTREGSCALL stub32_sigaltstack, sys32_sigaltstack, %rdx
@@
-290,8
+332,9
@@
quiet_ni_syscall:
PTREGSCALL stub32_rt_sigsuspend, sys_rt_sigsuspend, %rdx
ENTRY(ia32_ptregs_common)
PTREGSCALL stub32_rt_sigsuspend, sys_rt_sigsuspend, %rdx
ENTRY(ia32_ptregs_common)
- CFI_STARTPROC
popq %r11
popq %r11
+ CFI_ADJUST_CFA_OFFSET -8
+ CFI_REGISTER rip, r11
SAVE_REST
call *%rax
RESTORE_REST
SAVE_REST
call *%rax
RESTORE_REST
@@
-307,7
+350,7
@@
ia32_sys_call_table:
.quad stub32_fork
.quad sys_read
.quad sys_write
.quad stub32_fork
.quad sys_read
.quad sys_write
- .quad
sys32_open
/* 5 */
+ .quad
compat_sys_open
/* 5 */
.quad sys_close
.quad sys32_waitpid
.quad sys_creat
.quad sys_close
.quad sys32_waitpid
.quad sys_creat