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Add DWARF2 unwind information.

This commit is contained in:
Andreas Jaeger 2003-05-07 13:38:40 +00:00
parent 14a2bd4b6d
commit c99876181c
1 changed files with 28 additions and 1 deletions
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29
sysdeps/unix/sysv/linux/x86_64/syscall.S
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@ -28,7 +28,7 @@
.text .text
ENTRY (syscall) ENTRY (syscall)
.LFB1:
movq %rdi, %rax /* Syscall number -> rax. */ movq %rdi, %rax /* Syscall number -> rax. */
movq %rsi, %rdi /* shift arg1 - arg5. */ movq %rsi, %rdi /* shift arg1 - arg5. */
movq %rdx, %rsi movq %rdx, %rsi
@ -39,6 +39,33 @@ ENTRY (syscall)
cmpq $-4095, %rax /* Check %rax for error. */ cmpq $-4095, %rax /* Check %rax for error. */
jae SYSCALL_ERROR_LABEL /* Jump to error handler if error. */ jae SYSCALL_ERROR_LABEL /* Jump to error handler if error. */
L(pseudo_end): L(pseudo_end):
.LFE1:
ret /* Return to caller. */ ret /* Return to caller. */
PSEUDO_END (syscall) PSEUDO_END (syscall)
.section .eh_frame,"aw",@progbits
.Lframe1:
.long .LECIE1-.LSCIE1 # Length of Common Information Entry
.LSCIE1:
.long 0x0 # CIE Identifier Tag
.byte 0x1 # CIE Version
.ascii "\0" # CIE Augmentation
.uleb128 0x1 # CIE Code Alignment Factor
.sleb128 -8 # CIE Data Alignment Factor
.byte 0x10 # CIE RA Column
.byte 0xc # DW_CFA_def_cfa
.uleb128 0x7
.uleb128 0x8
.byte 0x90 # DW_CFA_offset, column 0x10
.uleb128 0x1
.align 8
.LECIE1:
.LSFDE1:
.long .LEFDE1-.LASFDE1 # FDE Length
.LASFDE1:
.long .LASFDE1-.Lframe1 # FDE CIE offset
.quad .LFB1 # FDE initial location
.quad .LFE1-.LFB1 # FDE address range
.align 8
.LEFDE1: