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Add proper unwind information.

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2004-01-22  Andreas Jaeger  <aj@suse.de>

	* sysdeps/unix/sysv/linux/x86_64/setcontext.S: Add proper unwind
	information.
This commit is contained in:
Andreas Jaeger
2004-01-22 08:17:42 +00:00
parent e11676dd1c
commit 4ef0929571
2 changed files with 22 additions and 1 deletions
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5
ChangeLog
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@@ -1,3 +1,8 @@
2004-01-22 Andreas Jaeger <aj@suse.de>
* sysdeps/unix/sysv/linux/x86_64/setcontext.S: Add proper unwind
information.
2004-01-20 Ulrich Drepper <drepper@redhat.com> 2004-01-20 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/sys/epoll.h: Add EPOLLONESHOT. * sysdeps/unix/sysv/linux/sys/epoll.h: Add EPOLLONESHOT.

18
sysdeps/unix/sysv/linux/x86_64/setcontext.S
View File

@@ -1,5 +1,5 @@
/* Install given context. /* Install given context.
Copyright (C) 2002 Free Software Foundation, Inc. Copyright (C) 2002, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
Contributed by Andreas Jaeger <aj@suse.de>, 2002. Contributed by Andreas Jaeger <aj@suse.de>, 2002.
@@ -35,6 +35,7 @@
ENTRY(__setcontext) ENTRY(__setcontext)
/* Save argument since syscall will destroy it. */ /* Save argument since syscall will destroy it. */
pushq %rdi pushq %rdi
cfi_adjust_cfa_offset(8)
/* Set the signal mask with /* Set the signal mask with
rt_sigprocmask (SIG_SETMASK, mask, NULL, _NSIG/8). */ rt_sigprocmask (SIG_SETMASK, mask, NULL, _NSIG/8). */
@@ -45,6 +46,7 @@ ENTRY(__setcontext)
movq $__NR_rt_sigprocmask, %rax movq $__NR_rt_sigprocmask, %rax
syscall syscall
popq %rdi /* Reload %rdi, adjust stack. */ popq %rdi /* Reload %rdi, adjust stack. */
cfi_adjust_cfa_offset(-8)
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. */
@@ -57,6 +59,16 @@ ENTRY(__setcontext)
/* Load the new stack pointer, the preserved registers and /* Load the new stack pointer, the preserved registers and
registers used for passing args. */ registers used for passing args. */
cfi_def_cfa(%rdi, 0)
cfi_offset(%rbx,oRBX)
cfi_offset(%rbp,oRBP)
cfi_offset(%r12,oR12)
cfi_offset(%r13,oR13)
cfi_offset(%r14,oR14)
cfi_offset(%r15,oR15)
cfi_offset(%rsp,oRSP)
cfi_offset(%rip,oRIP)
movq oRSP(%rdi), %rsp movq oRSP(%rdi), %rsp
movq oRBX(%rdi), %rbx movq oRBX(%rdi), %rbx
movq oRBP(%rdi), %rbp movq oRBP(%rdi), %rbp
@@ -79,6 +91,10 @@ ENTRY(__setcontext)
/* Setup finally %rdi. */ /* Setup finally %rdi. */
movq oRDI(%rdi), %rdi movq oRDI(%rdi), %rdi
/* End FDE here, we fall into another context. */
cfi_endproc
cfi_startproc
/* Clear rax to indicate success. */ /* Clear rax to indicate success. */
xorq %rax, %rax xorq %rax, %rax