Author: kib
Date: Fri Jun 18 11:10:39 2010
New Revision: 209295
URL: http://svn.freebsd.org/changeset/base/209295
Log:
Add unwind annotations to the asm part of crt1 on i386. Terminate the
process with SIGTRAP if _start1() unexpectedly returns.
Reviewed by: kan
MFC after: 2 weeks
Modified:
head/lib/csu/i386-elf/crt1_s.S
Modified: head/lib/csu/i386-elf/crt1_s.S
==============================================================================
--- head/lib/csu/i386-elf/crt1_s.S Fri Jun 18 11:09:51 2010
(r209294)
+++ head/lib/csu/i386-elf/crt1_s.S Fri Jun 18 11:10:39 2010
(r209295)
@@ -30,15 +30,22 @@
.align 4
.globl _start
.type _start, @function
-_start: xorl %ebp,%ebp
+_start:
+ .cfi_startproc
+ xorl %ebp,%ebp
pushl %ebp
+ .cfi_def_cfa_offset 4
movl %esp,%ebp
+ .cfi_offset %ebp,-8
+ .cfi_def_cfa_register %ebp
andl $0xfffffff0,%esp # align stack
leal 8(%ebp),%eax
pushl %eax # argv
pushl 4(%ebp) # argc
pushl %edx # rtld cleanup
call _start1
+ int3
+ .cfi_endproc
.size _start, . - _start
.ident "$FreeBSD$"
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