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 f174083..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/offset.h>
+#include <asm/asm-offsets.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)
-       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