diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S | 157 |
1 files changed, 42 insertions, 115 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S b/nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S index 5320a91e19..a01d745a17 100644 --- a/nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2005, 2007 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2005, 2007, 2009 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -31,16 +31,20 @@ .align 16 sem_wait: .LSTARTCODE: - pushq %r12 -.Lpush_r12: - pushq %r13 -.Lpush_r13: - movq %rdi, %r13 + 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 #if VALUE == 0 - movl (%r13), %eax + movl (%rdi), %eax #else - movl VALUE(%r13), %eax + movl VALUE(%rdi), %eax #endif 2: testl %eax, %eax je 1f @@ -48,23 +52,24 @@ sem_wait: leal -1(%rax), %edx LOCK #if VALUE == 0 - cmpxchgl %edx, (%r13) + cmpxchgl %edx, (%rdi) #else - cmpxchgl %edx, VALUE(%r13) + cmpxchgl %edx, VALUE(%rdi) #endif jne 2b -7: xorl %eax, %eax - -9: popq %r13 -.Lpop_r13: - popq %r12 -.Lpop_r12: - + xorl %eax, %eax retq -.Lafter_retq: -1: LOCK +1: pushq %r12 + cfi_adjust_cfa_offset(8) + cfi_rel_offset(%r12, 0) + pushq %r13 + cfi_adjust_cfa_offset(8) + cfi_rel_offset(%r13, 0) + movq %rdi, %r13 + + LOCK addq $1, NWAITERS(%r13) .LcleanupSTART: @@ -113,8 +118,21 @@ sem_wait: LOCK subq $1, NWAITERS(%r13) - jmp 7b + xorl %eax, %eax + +9: popq %r13 + cfi_adjust_cfa_offset(-8) + cfi_restore(%r13) + popq %r12 + cfi_adjust_cfa_offset(-8) + cfi_restore(%r12) + + retq + + cfi_adjust_cfa_offset(2 * 8) + cfi_rel_offset(%r12, 8) + cfi_rel_offset(%r13, 0) 4: negq %r12 #if USE___THREAD movq errno@gottpoff(%rip), %rdx @@ -141,15 +159,15 @@ sem_wait_cleanup: call _Unwind_Resume@PLT hlt .LENDCODE: + cfi_endproc .size sem_wait_cleanup,.-sem_wait_cleanup .section .gcc_except_table,"a",@progbits .LexceptSTART: - .byte 0xff # @LPStart format (omit) - .byte 0xff # @TType format (omit) - .byte 0x01 # call-site format - # DW_EH_PE_uleb128 + .byte DW_EH_PE_omit # @LPStart format + .byte DW_EH_PE_omit # @TType format + .byte DW_EH_PE_uleb128 # call-site format .uleb128 .Lcstend-.Lcstbegin .Lcstbegin: .uleb128 .LcleanupSTART-.LSTARTCODE @@ -163,97 +181,6 @@ sem_wait_cleanup: .Lcstend: - .section .eh_frame,"a",@progbits -.LSTARTFRAME: - .long .LENDCIE-.LSTARTCIE # 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 -8 # Data alignment factor. - .byte 16 # 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 10 # Augmentation value length. - .byte 0x0 # Personality: absolute - .quad __gcc_personality_v0 - .byte 0x0 # LSDA Encoding: absolute -#endif - .byte 0x0c # DW_CFA_def_cfa - .uleb128 7 - .uleb128 8 - .byte 0x90 # DW_CFA_offset, column 0x10 - .uleb128 1 - .align 8 -.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. - .long .LENDCODE-.LSTARTCODE # Length of the code. - .uleb128 4 # Augmentation size - .long .LexceptSTART-. -#else - .quad .LSTARTCODE # Start address of the code. - .quad .LENDCODE-.LSTARTCODE # Length of the code. - .uleb128 8 # Augmentation size - .quad .LexceptSTART -#endif - - .byte 4 # DW_CFA_advance_loc4 - .long .Lpush_r12-.LSTARTCODE - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 16 - .byte 0x8c # DW_CFA_offset %r12 - .uleb128 2 - .byte 4 # DW_CFA_advance_loc4 - .long .Lpush_r13-.Lpush_r12 - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 24 - .byte 0x8d # DW_CFA_offset %r13 - .uleb128 3 - .byte 4 # DW_CFA_advance_loc4 - .long .Lpop_r13-.Lpush_r13 - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 16 - .byte 0xcd # DW_CFA_restore %r13 - .byte 4 # DW_CFA_advance_loc4 - .long .Lpop_r12-.Lpop_r13 - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 8 - .byte 0xcc # DW_CFA_restore %r12 - .byte 4 # DW_CFA_advance_loc4 - .long .Lafter_retq-.Lpop_r12 - .byte 14 # DW_CFA_def_cfa_offset - .uleb128 24 - .byte 0x8c # DW_CFA_offset %r12 - .uleb128 2 - .byte 0x8d # DW_CFA_offset %r13 - .uleb128 3 - .align 8 -.LENDFDE: - - #ifdef SHARED .hidden DW.ref.__gcc_personality_v0 .weak DW.ref.__gcc_personality_v0 |