| 0,0 → 1,57 |
|---|
| # |
| # Copyright (c) 2008 Josef Cejka |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions |
| # are met: |
| # |
| # - Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # - Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # - The name of the author may not be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| # |
| |
| #include <kernel/arch/context_offset.h> |
| |
| .text |
| .global setjmp |
| .global longjmp |
| |
| .type setjmp,@function |
| setjmp: |
| movl 0(%esp),%eax # save pc value into eax |
| movl 4(%esp),%edx # address of the jmp_buf structure to save context to |
| |
| # save registers to the jmp_buf structure |
| CONTEXT_SAVE_ARCH_CORE %edx %eax |
| |
| xorl %eax,%eax # set_jmp returns 0 |
| ret |
| |
| .type longjmp,@function |
| longjmp: |
| |
| movl 4(%esp), %ecx # put address of jmp_buf into ecx |
| movl 8(%esp), %eax # put return value into eax |
| |
| # restore registers from the jmp_buf structure |
| CONTEXT_RESTORE_ARCH_CORE %ecx %edx |
| |
| movl %edx,0(%esp) # put saved pc on stack |
| ret |
| |