setjmp.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:1k
- /*
- * BK Id: SCCS/s.setjmp.c 1.5 05/17/01 18:14:23 cort
- */
- /*
- * Copyright (C) 1996 Paul Mackerras.
- *
- * NB this file must be compiled with -O2.
- */
- int
- xmon_setjmp(long *buf)
- {
- asm ("mflr 0; stw 0,0(%0);"
- "stw 1,4(%0); stw 2,8(%0);"
- "mfcr 0; stw 0,12(%0);"
- "stmw 13,16(%0)"
- : : "r" (buf));
- /* XXX should save fp regs as well */
- return 0;
- }
- void
- xmon_longjmp(long *buf, int val)
- {
- if (val == 0)
- val = 1;
- asm ("lmw 13,16(%0);"
- "lwz 0,12(%0); mtcrf 0x38,0;"
- "lwz 0,0(%0); lwz 1,4(%0); lwz 2,8(%0);"
- "mtlr 0; mr 3,%1"
- : : "r" (buf), "r" (val));
- }