Subversion Repositories openrisc

/*
   Copyright 2009, 2010 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/* Compile with "gcc -nostdlib dw2-restore.S" */

        .text
        .globl _start
        .func   _start
_start: call foo
        mov $0,%rax
        ret
        .endfunc

        .func   foo
foo:    .cfi_startproc
        push %rbp
        .cfi_adjust_cfa_offset 8
        mov %rsp,%rbp
        .cfi_def_cfa_register %rbp

        .cfi_remember_state
        jmp 2f
        
1:      mov %rbp,%rsp
        .cfi_restore %rbp
        pop %rbp
        .cfi_adjust_cfa_offset -8
        .cfi_def_cfa_register %rsp
        ret

        .cfi_restore_state
2:      movq $0,%rax
        movq $0,(%rax)  /* crash here */
        jmp 1b
        .cfi_endproc
        .endfunc