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changed definition of jmp_buf (alignment problems)

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eck 1990-10-26 11:31:27 +00:00
parent 16e89fea1f
commit 17abf1a78a
1 changed files with 10 additions and 3 deletions
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13
lang/cem/libcc.ansi/headers/setjmp.h
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@ -1,5 +1,5 @@
/*
* setjmp.h - restore calling environment
* setjmp.h - save/restore calling environment
*
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
* See the copyright notice in the ACK home directory, in the file "Copyright".
@ -12,11 +12,18 @@
/* In a jmp_buf, there is room for: 1 mask (long), 1 flag (int) and 3
* pointers (stack-pointer, local base and program-counter). This may be
* too big, but that doesn't matter. It could also be too small, when
* sigset_t is larger than a long.
* sigset_t is larger than a long. The fields is in the structure have no
* meaning, they just get the size right.
* The identifier __setjmp has a special meaning to the compiler.
*/
typedef char jmp_buf[ sizeof(long) + sizeof(int) + 3 * sizeof(void *)];
typedef struct {
long __mask;
int __flag;
void (*__pc)();
void *__sp;
void *__lb;
} jmp_buf[1];
int __setjmp(jmp_buf _env, int _savemask);