mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
Replace hand-coded unwind tables from x86-64 sem_wait.
This commit is contained in:
Ulrich Drepper
parent
63601ccd16
commit
c3c2f3cf56
@ -5,6 +5,7 @@
|
||||
hand-coded unwind tables.
|
||||
* sysdeps/unix/sysv/linux/x86_64/pthread_once.S (__pthread_once):
|
||||
Likewise.
|
||||
* sysdeps/unix/sysv/linux/x86_64/sem_wait.S (sem_wait): Likewise.
|
||||
|
||||
2009-06-12 Ulrich Drepper <drepper@redhat.com>
|
||||
|
||||
|
||||
@ -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.
|
||||
|
||||
@ -31,10 +31,21 @@
|
||||
.align 16
|
||||
sem_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
|
||||
pushq %r12
|
||||
.Lpush_r12:
|
||||
cfi_adjust_cfa_offset(8)
|
||||
cfi_rel_offset(%r12, 0)
|
||||
pushq %r13
|
||||
.Lpush_r13:
|
||||
cfi_adjust_cfa_offset(8)
|
||||
cfi_rel_offset(%r13, 0)
|
||||
movq %rdi, %r13
|
||||
|
||||
#if VALUE == 0
|
||||
@ -57,13 +68,17 @@ sem_wait:
|
||||
7: xorl %eax, %eax
|
||||
|
||||
9: popq %r13
|
||||
.Lpop_r13:
|
||||
cfi_adjust_cfa_offset(-8)
|
||||
cfi_restore(%r13)
|
||||
popq %r12
|
||||
.Lpop_r12:
|
||||
cfi_adjust_cfa_offset(-8)
|
||||
cfi_restore(%r12)
|
||||
|
||||
retq
|
||||
|
||||
.Lafter_retq:
|
||||
cfi_adjust_cfa_offset(2 * 8)
|
||||
cfi_rel_offset(%r12, 8)
|
||||
cfi_rel_offset(%r13, 0)
|
||||
1: LOCK
|
||||
addq $1, NWAITERS(%r13)
|
||||
|
||||
@ -141,15 +156,15 @@ 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 +178,6 @@ 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
|
||||
|
||||
Loading…
Reference in New Issue
Block a user