From f8c10bb45b7639ec7b6bb500a9e69b1e29d5e6f6 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Tue, 17 Nov 2009 17:59:33 -0800 Subject: [PATCH] Use cfi directives in x86 pthread_cond_{,timed}wait. --- nptl/ChangeLog | 7 + .../sysv/linux/i386/i486/pthread_cond_timedwait.S | 254 ++++++--------------- .../unix/sysv/linux/i386/i486/pthread_cond_wait.S | 223 +++++------------- 3 files changed, 140 insertions(+), 344 deletions(-) diff --git a/nptl/ChangeLog b/nptl/ChangeLog index 0aaaa3f..ae345a3 100644 --- a/nptl/ChangeLog +++ b/nptl/ChangeLog @@ -1,3 +1,10 @@ +2009-11-17 Ulrich Drepper + + * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S: Convert to use + cfi directives. + * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S: Likewise. + Based on a patch by Dinakar Guniguntala . + 2009-11-03 Andreas Schwab [BZ #4457] diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S index 83f8db2..8f5088a 100644 --- a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S +++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2004, 2006, 2007 Free Software Foundation, Inc. +/* Copyright (C) 2002-2004, 2006-2007, 2009 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 2002. @@ -34,14 +34,29 @@ .align 16 __pthread_cond_timedwait: .LSTARTCODE: + cfi_startproc +#ifdef SHARED + cfi_personality(DW_EH_PE_pcrel | DW_EH_PE_sdata4 | DW_EH_PE_indirect, + DW.ref.__gcc_personality_v0) + cfi_lsda(DW_EH_PE_pcrel | DW_EH_PE_sdata4, .LexceptSTART) +#else + cfi_personality(DW_EH_PE_udata4, __gcc_personality_v0) + cfi_lsda(DW_EH_PE_udata4, .LexceptSTART) +#endif + pushl %ebp -.Lpush_ebp: + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebp, 0) pushl %edi -.Lpush_edi: + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%edi, 0) pushl %esi -.Lpush_esi: + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%esi, 0) pushl %ebx -.Lpush_ebx: + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebx, 0) + cfi_remember_state movl 20(%esp), %ebx movl 28(%esp), %ebp @@ -82,7 +97,7 @@ __pthread_cond_timedwait: #define FRAME_SIZE 24 subl $FRAME_SIZE, %esp -.Lsubl: + cfi_adjust_cfa_offset(FRAME_SIZE) /* Get and store current wakeup_seq value. */ movl wakeup_seq(%ebx), %edi @@ -273,7 +288,7 @@ __pthread_cond_timedwait: 11: movl 24+FRAME_SIZE(%esp), %eax call __pthread_mutex_cond_lock addl $FRAME_SIZE, %esp -.Laddl: + cfi_adjust_cfa_offset(-FRAME_SIZE); /* We return the result of the mutex_lock operation if it failed. */ testl %eax, %eax @@ -286,19 +301,24 @@ __pthread_cond_timedwait: #endif 18: popl %ebx -.Lpop_ebx: + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) popl %esi -.Lpop_esi: + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) popl %edi -.Lpop_edi: + cfi_adjust_cfa_offset(-4) + cfi_restore(%edi) popl %ebp -.Lpop_ebp: + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebp) ret + cfi_restore_state + /* Initial locking failed. */ 1: -.LSbl1: #if cond_lock == 0 movl %ebx, %edx #else @@ -317,9 +337,17 @@ __pthread_cond_timedwait: call __lll_lock_wait jmp 2b - /* Unlock in loop requires wakeup. */ -3: -.LSbl2: + /* The initial unlocking of the mutex failed. */ +16: + LOCK +#if cond_lock == 0 + subl $1, (%ebx) +#else + subl $1, cond_lock(%ebx) +#endif + jne 18b + + movl %eax, %esi #if cond_lock == 0 movl %ebx, %eax #else @@ -336,14 +364,18 @@ __pthread_cond_timedwait: addl $LLL_PRIVATE, %ecx #endif call __lll_unlock_wake - jmp 4b - /* Locking in loop failed. */ -5: + movl %esi, %eax + jmp 18b + + cfi_adjust_cfa_offset(FRAME_SIZE) + + /* Unlock in loop requires wakeup. */ +3: #if cond_lock == 0 - movl %ebx, %edx + movl %ebx, %eax #else - leal cond_lock(%ebx), %edx + leal cond_lock(%ebx), %eax #endif #if (LLL_SHARED-LLL_PRIVATE) > 255 xorl %ecx, %ecx @@ -355,15 +387,15 @@ __pthread_cond_timedwait: #if LLL_PRIVATE != 0 addl $LLL_PRIVATE, %ecx #endif - call __lll_lock_wait - jmp 6b + call __lll_unlock_wake + jmp 4b - /* Unlock after loop requires wakeup. */ -10: + /* Locking in loop failed. */ +5: #if cond_lock == 0 - movl %ebx, %eax + movl %ebx, %edx #else - leal cond_lock(%ebx), %eax + leal cond_lock(%ebx), %edx #endif #if (LLL_SHARED-LLL_PRIVATE) > 255 xorl %ecx, %ecx @@ -375,21 +407,11 @@ __pthread_cond_timedwait: #if LLL_PRIVATE != 0 addl $LLL_PRIVATE, %ecx #endif - call __lll_unlock_wake - jmp 11b - - /* The initial unlocking of the mutex failed. */ -16: -.LSbl3: - LOCK -#if cond_lock == 0 - subl $1, (%ebx) -#else - subl $1, cond_lock(%ebx) -#endif - jne 18b + call __lll_lock_wait + jmp 6b - movl %eax, %esi + /* Unlock after loop requires wakeup. */ +10: #if cond_lock == 0 movl %ebx, %eax #else @@ -406,13 +428,10 @@ __pthread_cond_timedwait: addl $LLL_PRIVATE, %ecx #endif call __lll_unlock_wake - - movl %esi, %eax - jmp 18b + jmp 11b #if defined __NR_clock_gettime && !defined __ASSUME_POSIX_TIMERS /* clock_gettime not available. */ -.LSbl4: 19: leal 4(%esp), %ebx xorl %ecx, %ecx movl $__NR_gettimeofday, %eax @@ -443,7 +462,6 @@ versioned_symbol (libpthread, __pthread_cond_timedwait, pthread_cond_timedwait, .type __condvar_tw_cleanup2, @function __condvar_tw_cleanup2: subl $cond_futex, %ebx -.LSbl5: .size __condvar_tw_cleanup2, .-__condvar_tw_cleanup2 .type __condvar_tw_cleanup, @function __condvar_tw_cleanup: @@ -583,14 +601,15 @@ __condvar_tw_cleanup: call _Unwind_Resume hlt .LENDCODE: + cfi_endproc .size __condvar_tw_cleanup, .-__condvar_tw_cleanup .section .gcc_except_table,"a",@progbits .LexceptSTART: - .byte 0xff # @LPStart format (omit) - .byte 0xff # @TType format (omit) - .byte 0x0b # call-site format + .byte DW_EH_PE_omit # @LPStart format (omit) + .byte DW_EH_PE_omit # @TType format (omit) + .byte DW_EH_PE_sdata4 # call-site format # DW_EH_PE_sdata4 .uleb128 .Lcstend-.Lcstbegin .Lcstbegin: @@ -613,144 +632,13 @@ __condvar_tw_cleanup: .Lcstend: - .section .eh_frame,"a",@progbits -.LSTARTFRAME: - .long L(ENDCIE)-L(STARTCIE) # Length of the CIE. -.LSTARTCIE: - .long 0 # CIE ID. - .byte 1 # Version number. -#ifdef SHARED - .string "zPLR" # NUL-terminated augmentation - # string. -#else - .string "zPL" # NUL-terminated augmentation - # string. -#endif - .uleb128 1 # Code alignment factor. - .sleb128 -4 # Data alignment factor. - .byte 8 # Return address register - # column. -#ifdef SHARED - .uleb128 7 # Augmentation value length. - .byte 0x9b # Personality: DW_EH_PE_pcrel - # + DW_EH_PE_sdata4 - # + DW_EH_PE_indirect - .long DW.ref.__gcc_personality_v0-. - .byte 0x1b # LSDA Encoding: DW_EH_PE_pcrel - # + DW_EH_PE_sdata4. - .byte 0x1b # FDE Encoding: DW_EH_PE_pcrel - # + DW_EH_PE_sdata4. -#else - .uleb128 6 # Augmentation value length. - .byte 0x0 # Personality: absolute - .long __gcc_personality_v0 - .byte 0x0 # LSDA Encoding: absolute -#endif - .byte 0x0c # DW_CFA_def_cfa - .uleb128 4 - .uleb128 4 - .byte 0x88 # DW_CFA_offset, column 0x8 - .uleb128 1 - .align 4 -.LENDCIE: - - .long .LENDFDE-.LSTARTFDE # Length of the FDE. -.LSTARTFDE: - .long .LSTARTFDE-.LSTARTFRAME # CIE pointer. -#ifdef SHARED - .long .LSTARTCODE-. # PC-relative start address - # of the code -#else - .long .LSTARTCODE # Start address of the code. -#endif - .long .LENDCODE-.LSTARTCODE # Length of the code. - .uleb128 4 # Augmentation size -#ifdef SHARED - .long .LexceptSTART-. -#else - .long .LexceptSTART -#endif - .byte 0x40+.Lpush_ebp-.LSTARTCODE # DW_CFA_advance_loc+N - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 8 - .byte 0x85 # DW_CFA_offset %ebp - .uleb128 2 - .byte 0x40+ .Lpush_edi-.Lpush_ebp # DW_CFA_advance_loc+N - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 12 - .byte 0x87 # DW_CFA_offset %edi - .uleb128 3 - .byte 0x40+.Lpush_esi-.Lpush_edi # DW_CFA_advance_loc+N - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 16 - .byte 0x86 # DW_CFA_offset %esi - .uleb128 4 - .byte 0x40+.Lpush_ebx-.Lpush_esi # DW_CFA_advance_loc+N - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 20 - .byte 0x83 # DW_CFA_offset %ebx - .uleb128 5 - .byte 4 # DW_CFA_advance_loc4 - .4byte .Lsubl-.Lpush_ebx - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 20+FRAME_SIZE - .byte 4 # DW_CFA_advance_loc4 - .4byte .Laddl-.Lsubl - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 20 - .byte 0x40+.Lpop_ebx-.Laddl # DW_CFA_advance_loc+N - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 16 - .byte 0xc3 # DW_CFA_restore %ebx - .byte 0x40+.Lpop_esi-.Lpop_ebx # DW_CFA_advance_loc+N - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 12 - .byte 0xc6 # DW_CFA_restore %esi - .byte 0x40+.Lpop_edi-.Lpop_esi # DW_CFA_advance_loc+N - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 8 - .byte 0xc7 # DW_CFA_restore %edi - .byte 0x40+.Lpop_ebp-.Lpop_edi # DW_CFA_advance_loc+N - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 4 - .byte 0xc5 # DW_CFA_restore %ebp - .byte 0x40+.LSbl1-.Lpop_edi # DW_CFA_advance_loc+N - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 20 - .byte 4 # DW_CFA_advance_loc4 - .4byte .LSbl2-.LSbl1 - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 20+FRAME_SIZE - .byte 0x85 # DW_CFA_offset %ebp - .uleb128 2 - .byte 0x87 # DW_CFA_offset %edi - .uleb128 3 - .byte 0x86 # DW_CFA_offset %esi - .uleb128 4 - .byte 0x83 # DW_CFA_offset %ebx - .uleb128 5 - .byte 4 # DW_CFA_advance_loc4 - .4byte .LSbl3-.LSbl2 - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 20 - .byte 4 # DW_CFA_advance_loc4 -#if defined __NR_clock_gettime && !defined __ASSUME_POSIX_TIMERS - .4byte .LSbl4-.LSbl3 -#else - .4byte .LSbl5-.LSbl3 -#endif - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 20+FRAME_SIZE - .align 4 -.LENDFDE: - #ifdef SHARED .hidden DW.ref.__gcc_personality_v0 - .weak DW.ref.__gcc_personality_v0 + .weak DW.ref.__gcc_personality_v0 .section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits - .align 4 - .type DW.ref.__gcc_personality_v0, @object - .size DW.ref.__gcc_personality_v0, 4 + .align 4 + .type DW.ref.__gcc_personality_v0, @object + .size DW.ref.__gcc_personality_v0, 4 DW.ref.__gcc_personality_v0: .long __gcc_personality_v0 #endif diff --git a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S index 5b30197..776b95e 100644 --- a/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S +++ b/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2004, 2006, 2007 Free Software Foundation, Inc. +/* Copyright (C) 2002-2004, 2006-2007, 2009 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper , 2002. @@ -33,13 +33,26 @@ .align 16 __pthread_cond_wait: .LSTARTCODE: + cfi_startproc +#ifdef SHARED + cfi_personality(DW_EH_PE_pcrel | DW_EH_PE_sdata4 | DW_EH_PE_indirect, + DW.ref.__gcc_personality_v0) + cfi_lsda(DW_EH_PE_pcrel | DW_EH_PE_sdata4, .LexceptSTART) +#else + cfi_personality(DW_EH_PE_udata4, __gcc_personality_v0) + cfi_lsda(DW_EH_PE_udata4, .LexceptSTART) +#endif pushl %edi -.Lpush_edi: + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%edi, 0) pushl %esi -.Lpush_esi: + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%esi, 0) pushl %ebx -.Lpush_ebx: + cfi_adjust_cfa_offset(4) + cfi_rel_offset(%ebx, 0) + cfi_remember_state xorl %esi, %esi movl 16(%esp), %ebx @@ -76,7 +89,7 @@ __pthread_cond_wait: #define FRAME_SIZE 16 subl $FRAME_SIZE, %esp -.Lsubl: + cfi_adjust_cfa_offset(FRAME_SIZE) /* Get and store current wakeup_seq value. */ movl wakeup_seq(%ebx), %edi @@ -202,21 +215,25 @@ __pthread_cond_wait: 11: movl 20+FRAME_SIZE(%esp), %eax call __pthread_mutex_cond_lock addl $FRAME_SIZE, %esp -.Laddl: + cfi_adjust_cfa_offset(-FRAME_SIZE); 14: popl %ebx -.Lpop_ebx: + cfi_adjust_cfa_offset(-4) + cfi_restore(%ebx) popl %esi -.Lpop_esi: + cfi_adjust_cfa_offset(-4) + cfi_restore(%esi) popl %edi -.Lpop_edi: + cfi_adjust_cfa_offset(-4) + cfi_restore(%edi) /* We return the result of the mutex_lock operation. */ ret + cfi_restore_state + /* Initial locking failed. */ 1: -.LSbl1: #if cond_lock == 0 movl %ebx, %edx #else @@ -235,9 +252,17 @@ __pthread_cond_wait: call __lll_lock_wait jmp 2b - /* Unlock in loop requires waekup. */ -3: -.LSbl2: + /* The initial unlocking of the mutex failed. */ +12: + LOCK +#if cond_lock == 0 + subl $1, (%ebx) +#else + subl $1, cond_lock(%ebx) +#endif + jne 14b + + movl %eax, %esi #if cond_lock == 0 movl %ebx, %eax #else @@ -254,14 +279,18 @@ __pthread_cond_wait: addl $LLL_PRIVATE, %ecx #endif call __lll_unlock_wake - jmp 4b - /* Locking in loop failed. */ -5: + movl %esi, %eax + jmp 14b + + cfi_adjust_cfa_offset(FRAME_SIZE) + + /* Unlock in loop requires wakeup. */ +3: #if cond_lock == 0 - movl %ebx, %edx + movl %ebx, %eax #else - leal cond_lock(%ebx), %edx + leal cond_lock(%ebx), %eax #endif #if (LLL_SHARED-LLL_PRIVATE) > 255 xorl %ecx, %ecx @@ -273,15 +302,15 @@ __pthread_cond_wait: #if LLL_PRIVATE != 0 addl $LLL_PRIVATE, %ecx #endif - call __lll_lock_wait - jmp 6b + call __lll_unlock_wake + jmp 4b - /* Unlock after loop requires wakeup. */ -10: + /* Locking in loop failed. */ +5: #if cond_lock == 0 - movl %ebx, %eax + movl %ebx, %edx #else - leal cond_lock(%ebx), %eax + leal cond_lock(%ebx), %edx #endif #if (LLL_SHARED-LLL_PRIVATE) > 255 xorl %ecx, %ecx @@ -293,21 +322,11 @@ __pthread_cond_wait: #if LLL_PRIVATE != 0 addl $LLL_PRIVATE, %ecx #endif - call __lll_unlock_wake - jmp 11b - - /* The initial unlocking of the mutex failed. */ -12: -.LSbl3: - LOCK -#if cond_lock == 0 - subl $1, (%ebx) -#else - subl $1, cond_lock(%ebx) -#endif - jne 14b + call __lll_lock_wait + jmp 6b - movl %eax, %esi + /* Unlock after loop requires wakeup. */ +10: #if cond_lock == 0 movl %ebx, %eax #else @@ -324,9 +343,7 @@ __pthread_cond_wait: addl $LLL_PRIVATE, %ecx #endif call __lll_unlock_wake - - movl %esi, %eax - jmp 14b + jmp 11b .size __pthread_cond_wait, .-__pthread_cond_wait versioned_symbol (libpthread, __pthread_cond_wait, pthread_cond_wait, GLIBC_2_3_2) @@ -475,14 +492,15 @@ __condvar_w_cleanup: call _Unwind_Resume hlt .LENDCODE: + cfi_endproc .size __condvar_w_cleanup, .-__condvar_w_cleanup .section .gcc_except_table,"a",@progbits .LexceptSTART: - .byte 0xff # @LPStart format (omit) - .byte 0xff # @TType format (omit) - .byte 0x0b # call-site format + .byte DW_EH_PE_omit # @LPStart format (omit) + .byte DW_EH_PE_omit # @TType format (omit) + .byte DW_EH_PE_sdata4 # call-site format # DW_EH_PE_sdata4 .uleb128 .Lcstend-.Lcstbegin .Lcstbegin: @@ -504,123 +522,6 @@ __condvar_w_cleanup: .uleb128 0 .Lcstend: - .section .eh_frame,"a",@progbits -.LSTARTFRAME: - .long L(ENDCIE)-L(STARTCIE) # Length of the CIE. -.LSTARTCIE: - .long 0 # CIE ID. - .byte 1 # Version number. -#ifdef SHARED - .string "zPLR" # NUL-terminated augmentation - # string. -#else - .string "zPL" # NUL-terminated augmentation - # string. -#endif - .uleb128 1 # Code alignment factor. - .sleb128 -4 # Data alignment factor. - .byte 8 # Return address register - # column. -#ifdef SHARED - .uleb128 7 # Augmentation value length. - .byte 0x9b # Personality: DW_EH_PE_pcrel - # + DW_EH_PE_sdata4 - # + DW_EH_PE_indirect - .long DW.ref.__gcc_personality_v0-. - .byte 0x1b # LSDA Encoding: DW_EH_PE_pcrel - # + DW_EH_PE_sdata4. - .byte 0x1b # FDE Encoding: DW_EH_PE_pcrel - # + DW_EH_PE_sdata4. -#else - .uleb128 6 # Augmentation value length. - .byte 0x0 # Personality: absolute - .long __gcc_personality_v0 - .byte 0x0 # LSDA Encoding: absolute -#endif - .byte 0x0c # DW_CFA_def_cfa - .uleb128 4 - .uleb128 4 - .byte 0x88 # DW_CFA_offset, column 0x8 - .uleb128 1 - .align 4 -.LENDCIE: - - .long .LENDFDE-.LSTARTFDE # Length of the FDE. -.LSTARTFDE: - .long .LSTARTFDE-.LSTARTFRAME # CIE pointer. -#ifdef SHARED - .long .LSTARTCODE-. # PC-relative start address - # of the code. -#else - .long .LSTARTCODE # Start address of the code. -#endif - .long .LENDCODE-.LSTARTCODE # Length of the code. - .uleb128 4 # Augmentation size -#ifdef SHARED - .long .LexceptSTART-. -#else - .long .LexceptSTART -#endif - .byte 0x40+.Lpush_edi-.LSTARTCODE # DW_CFA_advance_loc+N - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 8 - .byte 0x87 # DW_CFA_offset %edi - .uleb128 2 - .byte 0x40+.Lpush_esi-.Lpush_edi # DW_CFA_advance_loc+N - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 12 - .byte 0x86 # DW_CFA_offset %esi - .uleb128 3 - .byte 0x40+.Lpush_ebx-.Lpush_esi # DW_CFA_advance_loc+N - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 16 - .byte 0x83 # DW_CFA_offset %ebx - .uleb128 4 - .byte 4 # DW_CFA_advance_loc4 - .4byte .Lsubl-.Lpush_ebx - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 16+FRAME_SIZE - .byte 4 # DW_CFA_advance_loc4 - .4byte .Laddl-.Lsubl - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 16 - .byte 0x40+ .Lpop_ebx-.Laddl # DW_CFA_advance_loc+N - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 12 - .byte 0xc3 # DW_CFA_restore %ebx - .byte 0x40+.Lpop_esi-.Lpop_ebx # DW_CFA_advance_loc+N - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 8 - .byte 0xc6 # DW_CFA_restore %esi - .byte 0x40+.Lpop_edi-.Lpop_esi # DW_CFA_advance_loc+N - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 4 - .byte 0xc7 # DW_CFA_restore %edi - .byte 0x40+.LSbl1-.Lpop_edi # DW_CFA_advance_loc+N - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 16 - .byte 0x87 # DW_CFA_offset %edi - .uleb128 2 - .byte 0x86 # DW_CFA_offset %esi - .uleb128 3 - .byte 0x83 # DW_CFA_offset %ebx - .uleb128 4 - .byte 4 # DW_CFA_advance_loc4 - .4byte .LSbl2-.LSbl1 - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 16+FRAME_SIZE - .byte 4 # DW_CFA_advance_loc4 - .4byte .LSbl3-.LSbl2 - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 16 - .byte 4 # DW_CFA_advance_loc4 - .4byte .LSbl4-.LSbl3 - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 16+FRAME_SIZE - .align 4 -.LENDFDE: - - #ifdef PIC .section .gnu.linkonce.t.__i686.get_pc_thunk.cx,"ax",@progbits .globl __i686.get_pc_thunk.cx -- 2.7.4