1 files changed, 47 insertions, 4 deletions

diff --git a/arch/x86_64/ia32/ia32entry.S b/arch/x86_64/ia32/ia32entry.S
index 5244f803203d..e0eb0c712fe9 100644
--- a/arch/x86_64/ia32/ia32entry.S
+++ b/arch/x86_64/ia32/ia32entry.S
@@ -55,20 +55,34 @@
  * 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
+        CFI_ADJUST_CFA_OFFSET 8
+        /*CFI_REL_OFFSET ss,0*/
         pushq   %rbp
+        CFI_ADJUST_CFA_OFFSET 8
+        CFI_REL_OFFSET rsp,0
         pushfq
+        CFI_ADJUST_CFA_OFFSET 8
+        /*CFI_REL_OFFSET rflags,0*/
         movl    $VSYSCALL32_SYSEXIT, %r10d
+        CFI_REGISTER rip,r10
         pushq   $__USER32_CS
+        CFI_ADJUST_CFA_OFFSET 8
+        /*CFI_REL_OFFSET cs,0*/
         movl    %eax, %eax
         pushq   %r10
+        CFI_ADJUST_CFA_OFFSET 8
+        CFI_REL_OFFSET rip,0
         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
@@ -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)
+        CFI_REMEMBER_STATE
         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
+        CFI_ADJUST_CFA_OFFSET -8
+        /*CFI_RESTORE rflags*/
         popq    %rcx                            /* User %esp */
+        CFI_ADJUST_CFA_OFFSET -8
+        CFI_REGISTER rsp,rcx
         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:
+        CFI_RESTORE_STATE
         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)
-        CFI_STARTPROC
+        CFI_STARTPROC   simple
+        CFI_DEF_CFA     rsp,0
+        CFI_REGISTER    rip,rcx
+        /*CFI_REGISTER  rflags,r11*/
         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)
+        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)
+        /*CFI_REL_OFFSET rflags,EFLAGS-ARGOFFSET*/
         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 */      
@@ -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)
+        CFI_REMEMBER_STATE
         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
+        CFI_REGISTER rip,rcx
         movl EFLAGS-ARGOFFSET(%rsp),%r11d       
+        /*CFI_REGISTER rflags,r11*/
         movl RSP-ARGOFFSET(%rsp),%esp
+        CFI_RESTORE rsp
         swapgs
         sysretl
         
 cstar_tracesys: 
+        CFI_RESTORE_STATE
         SAVE_REST
         CLEAR_RREGS
         movq $-ENOSYS,RAX(%rsp) /* really needed? */
@@ -226,11 +259,18 @@ ia32_badarg:
  */                             
 
 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
+        CFI_ADJUST_CFA_OFFSET 8
         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
 
+        CFI_STARTPROC
+
         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)
-        CFI_STARTPROC
         popq %r11
+        CFI_ADJUST_CFA_OFFSET -8
+        CFI_REGISTER rip, r11
         SAVE_REST
         call *%rax
         RESTORE_REST