/* Define the machine-dependent type `jmp_buf'. Intel 386 version. */ typedef struct { long int __bx, __si, __di; __ptr_t __bp; __ptr_t __sp; __ptr_t __pc; } __jmp_buf[1]; /* Test if longjmp to JMPBUF would unwind the frame containing a local variable at ADDRESS. */ #define _JMPBUF_UNWINDS(jmpbuf, address) \ ((__ptr_t) (address) < (jmpbuf)[0].__sp)