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Replace hand-coded unwind tables from x86-64 sem_wait.

This commit is contained in:
Ulrich Drepper 2009-07-17 15:31:36 -07:00
parent 63601ccd16
commit c3c2f3cf56
2 changed files with 26 additions and 101 deletions
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1
nptl/ChangeLog
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@ -5,6 +5,7 @@
hand-coded unwind tables. hand-coded unwind tables.
* sysdeps/unix/sysv/linux/x86_64/pthread_once.S (__pthread_once): * sysdeps/unix/sysv/linux/x86_64/pthread_once.S (__pthread_once):
Likewise. Likewise.
* sysdeps/unix/sysv/linux/x86_64/sem_wait.S (sem_wait): Likewise.
2009-06-12 Ulrich Drepper <drepper@redhat.com> 2009-06-12 Ulrich Drepper <drepper@redhat.com>

126
nptl/sysdeps/unix/sysv/linux/x86_64/sem_wait.S
View File

@ -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. This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@ -31,10 +31,21 @@
.align 16 .align 16
sem_wait: sem_wait:
.LSTARTCODE: .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
pushq %r12 pushq %r12
.Lpush_r12: cfi_adjust_cfa_offset(8)
cfi_rel_offset(%r12, 0)
pushq %r13 pushq %r13
.Lpush_r13: cfi_adjust_cfa_offset(8)
cfi_rel_offset(%r13, 0)
movq %rdi, %r13 movq %rdi, %r13
#if VALUE == 0 #if VALUE == 0
@ -57,13 +68,17 @@ sem_wait:
7: xorl %eax, %eax 7: xorl %eax, %eax
9: popq %r13 9: popq %r13
.Lpop_r13: cfi_adjust_cfa_offset(-8)
cfi_restore(%r13)
popq %r12 popq %r12
.Lpop_r12: cfi_adjust_cfa_offset(-8)
cfi_restore(%r12)
retq retq
.Lafter_retq: cfi_adjust_cfa_offset(2 * 8)
cfi_rel_offset(%r12, 8)
cfi_rel_offset(%r13, 0)
1: LOCK 1: LOCK
addq $1, NWAITERS(%r13) addq $1, NWAITERS(%r13)
@ -141,15 +156,15 @@ sem_wait_cleanup:
call _Unwind_Resume@PLT call _Unwind_Resume@PLT
hlt hlt
.LENDCODE: .LENDCODE:
cfi_endproc
.size sem_wait_cleanup,.-sem_wait_cleanup .size sem_wait_cleanup,.-sem_wait_cleanup
.section .gcc_except_table,"a",@progbits .section .gcc_except_table,"a",@progbits
.LexceptSTART: .LexceptSTART:
.byte 0xff # @LPStart format (omit) .byte DW_EH_PE_omit # @LPStart format
.byte 0xff # @TType format (omit) .byte DW_EH_PE_omit # @TType format
.byte 0x01 # call-site format .byte DW_EH_PE_uleb128 # call-site format
# DW_EH_PE_uleb128
.uleb128 .Lcstend-.Lcstbegin .uleb128 .Lcstend-.Lcstbegin
.Lcstbegin: .Lcstbegin:
.uleb128 .LcleanupSTART-.LSTARTCODE .uleb128 .LcleanupSTART-.LSTARTCODE
@ -163,97 +178,6 @@ sem_wait_cleanup:
.Lcstend: .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 #ifdef SHARED
.hidden DW.ref.__gcc_personality_v0 .hidden DW.ref.__gcc_personality_v0
.weak DW.ref.__gcc_personality_v0 .weak DW.ref.__gcc_personality_v0