blob: fe1a9ef4d8dcdb7d163a04242564e502408a1296 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
#ifndef _SETJMP_H
#define _SETJMP_H
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdint.h>
#include <realmode.h>
/** A jump buffer */
typedef struct {
/** Saved return address */
uint32_t retaddr;
/** Saved stack pointer */
uint32_t stack;
/** Saved %ebx */
uint32_t ebx;
/** Saved %esi */
uint32_t esi;
/** Saved %edi */
uint32_t edi;
/** Saved %ebp */
uint32_t ebp;
} jmp_buf[1];
/** A real-mode-extended jump buffer */
typedef struct {
/** Jump buffer */
jmp_buf env;
/** Real-mode stack pointer */
segoff_t rm_stack;
} rmjmp_buf[1];
extern int __asmcall __attribute__ (( returns_twice ))
setjmp ( jmp_buf env );
extern void __asmcall __attribute__ (( noreturn ))
longjmp ( jmp_buf env, int val );
#define rmsetjmp( _env ) ( { \
(_env)->rm_stack.segment = rm_ss; \
(_env)->rm_stack.offset = rm_sp; \
setjmp ( (_env)->env ); } ) \
#define rmlongjmp( _env, _val ) do { \
rm_ss = (_env)->rm_stack.segment; \
rm_sp = (_env)->rm_stack.offset; \
longjmp ( (_env)->env, (_val) ); \
} while ( 0 )
#endif /* _SETJMP_H */
|
