setjmp.h

标准c库代码,可以应用于各个系统提供了大量的基本函数

#ifdef __sparc__
/*
 * onsstack,sigmask,sp,pc,npc,psr,g1,o0,wbcnt (sigcontext).
 * All else recovered by under/over(flow) handling.
 */
#define	_JBLEN	9
#endif
/* necv70 was 9 as well. */
#ifdef __mc68000__
/*
 * onsstack,sigmask,sp,pc,psl,d2-d7,a2-a6,
 * fp2-fp7	for 68881.
 * All else recovered by under/over(flow) handling.
 */
#define	_JBLEN	34
#endif
#ifdef __H8300__
/*
 * 8 regs + pc + reg
 * 
 */
#define	_JBLEN	11
#endif

#ifdef __H8300H__
/*
 * same as H8/300 but registers are twice as big
 * 
 */
#define	_JBLEN	22
#endif


#if defined(__Z8001__) || defined(__Z8002__)
/* 16 regs + pc */
#define _JBLEN 20
#endif

#ifdef ___AM29K__
/*
 * onsstack,sigmask,sp,pc,npc,psr,g1,o0,wbcnt (sigcontext).
 * All else recovered by under/over(flow) handling.
 */
#define	_JBLEN	9
#endif
#ifdef __i386__
#ifdef __unix__
# define _JBLEN	36
#else
#include "setjmp-dj.h"
#endif
#endif
#ifdef __i960__
#define _JBLEN 35
#endif

#ifdef __mips__
#define _JBLEN 11
#endif

#ifdef __m88000__
#define _JBLEN 21
#endif

#ifdef __powerpc__
#define _JBLEN 59
#endif

#ifdef _JBLEN
typedef	int jmp_buf[_JBLEN];
/*
 * One extra word for the "signal mask saved here" flag.
 */
typedef	int sigjmp_buf[_JBLEN+1];
#endif

#ifdef  __sh__
#define _JBLEN 20
typedef int jmp_buf[_JBLEN];
#endif

#ifdef  __v800
#define _JBLEN 28
typedef int jmp_buf[_JBLEN];
#endif