diff options
Diffstat (limited to 'nptl')
| -rw-r--r-- | nptl/ChangeLog | 5 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/x86_64/pthread_once.S | 151 |
2 files changed, 137 insertions, 19 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog index a739fe1db7..509f23a58b 100644 --- a/nptl/ChangeLog +++ b/nptl/ChangeLog @@ -1,3 +1,8 @@ +2003-07-01 Ulrich Drepper <drepper@redhat.com> + + * sysdeps/unix/sysv/linux/x86_64/pthread_once.S: Add correct + cleanup support and unwind info. + 2003-06-30 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/i386/pthread_once.S (__pthread_once): diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_once.S b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_once.S index cebcb38b2a..3fec0f4205 100644 --- a/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_once.S +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/pthread_once.S @@ -35,6 +35,7 @@ .type __pthread_once,@function .align 16 __pthread_once: +.LSTARTCODE: testl $2, (%rdi) jz 1f xorl %eax, %eax @@ -42,6 +43,7 @@ __pthread_once: /* Preserve the function pointer. */ 1: pushq %rsi +.Lpush_rsi: xorq %r10, %r10 /* Not yet initialized or initialization in progress. @@ -79,28 +81,15 @@ __pthread_once: /* Preserve the pointer to the control variable. */ 3: pushq %rdi +.Lpush_rdi: - /* Call the initializer function after setting up the - cancellation handler. */ - subq $32, %rsp - - /* Push the cleanup handler. */ - leaq clear_once_control(%rip), %rsi - movq %rdi, %rdx - movq %rsp, %rdi - callq __pthread_cleanup_push /* Note: no @PLT. */ - - callq *40(%rsp) - - /* Pop the cleanup handler. */ - movq %rsp, %rdi - xorq %rsi, %rsi - callq __pthread_cleanup_pop /* Note: no @PLT. */ - - addq $32, %rsp +.LcleanupSTART: + callq *8(%rsp) +.LcleanupEND: /* Get the control variable address back. */ popq %rdi +.Lpop_rdi: /* Sucessful run of the initializer. Signal that we are done. */ LOCK @@ -113,6 +102,7 @@ __pthread_once: syscall 4: addq $8, %rsp +.Ladd: xorq %rax, %rax retq @@ -129,6 +119,8 @@ pthread_once = __pthread_once .type clear_once_control,@function .align 16 clear_once_control: + movq (%rsp), %rdi + movq %rax, %r8 movl $0, (%rdi) movl $0x7fffffff, %edx @@ -136,5 +128,126 @@ clear_once_control: movq $SYS_futex, %rax syscall - retq + movq %r8, %rdi +.LcallUR: + call _Unwind_Resume@PLT + hlt +.LENDCODE: .size clear_once_control,.-clear_once_control + + + .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 + .uleb128 .Lcstend-.Lcstbegin +.Lcstbegin: + .uleb128 .LcleanupSTART-.LSTARTCODE + .uleb128 .LcleanupEND-.LcleanupSTART + .uleb128 clear_once_control-.LSTARTCODE + .uleb128 0 + .uleb128 .LcallUR-.LSTARTCODE + .uleb128 .LENDCODE-.LcallUR + .uleb128 0 + .uleb128 0 +.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_rsi-.LSTARTCODE + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 16 + .byte 4 # DW_CFA_advance_loc4 + .long .Lpush_rdi-.Lpush_rsi + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 24 + .byte 4 # DW_CFA_advance_loc4 + .long .Lpop_rdi-.Lpush_rdi + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 16 + .byte 4 # DW_CFA_advance_loc4 + .long .Ladd-.Lpop_rdi + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 8 + .byte 4 # DW_CFA_advance_loc4 + .long clear_once_control-.Ladd + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 24 +#if 0 + .byte 4 # DW_CFA_advance_loc4 + .long .Lpop_rdi2-clear_once_control + .byte 14 # DW_CFA_def_cfa_offset + .uleb128 16 +#endif + .align 8 +.LENDFDE: + + +#ifdef SHARED + .hidden DW.ref.__gcc_personality_v0 + .weak DW.ref.__gcc_personality_v0 + .section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits + .align 8 + .type DW.ref.__gcc_personality_v0, @object + .size DW.ref.__gcc_personality_v0, 8 +DW.ref.__gcc_personality_v0: + .quad __gcc_personality_v0 +#endif |