diff options
| author | fishsoupisgood <github@madingley.org> | 2019-04-29 01:17:54 +0100 |
|---|---|---|
| committer | fishsoupisgood <github@madingley.org> | 2019-05-27 03:43:43 +0100 |
| commit | 3f2546b2ef55b661fd8dd69682b38992225e86f6 (patch) | |
| tree | 65ca85f13617aee1dce474596800950f266a456c /roms/ipxe/src/arch/i386/include/setjmp.h | |
| download | qemu-master.tar.gz qemu-master.tar.bz2 qemu-master.zip | |
Diffstat (limited to 'roms/ipxe/src/arch/i386/include/setjmp.h')
| -rw-r--r-- | roms/ipxe/src/arch/i386/include/setjmp.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/roms/ipxe/src/arch/i386/include/setjmp.h b/roms/ipxe/src/arch/i386/include/setjmp.h new file mode 100644 index 00000000..5d3c11b6 --- /dev/null +++ b/roms/ipxe/src/arch/i386/include/setjmp.h @@ -0,0 +1,40 @@ +#ifndef ETHERBOOT_SETJMP_H +#define ETHERBOOT_SETJMP_H + +FILE_LICENCE ( GPL2_OR_LATER ); + +#include <stdint.h> +#include <realmode.h> + +/** A jump buffer */ +typedef struct { + uint32_t retaddr; + uint32_t ebx; + uint32_t esp; + uint32_t ebp; + uint32_t esi; + uint32_t edi; +} jmp_buf[1]; + +/** A real-mode-extended jump buffer */ +typedef struct { + jmp_buf env; + uint16_t rm_ss; + uint16_t rm_sp; +} rmjmp_buf[1]; + +extern int __asmcall setjmp ( jmp_buf env ); +extern void __asmcall longjmp ( jmp_buf env, int val ); + +#define rmsetjmp( _env ) ( { \ + (_env)->rm_ss = rm_ss; \ + (_env)->rm_sp = rm_sp; \ + setjmp ( (_env)->env ); } ) \ + +#define rmlongjmp( _env, _val ) do { \ + rm_ss = (_env)->rm_ss; \ + rm_sp = (_env)->rm_sp; \ + longjmp ( (_env)->env, (_val) ); \ + } while ( 0 ) + +#endif /* ETHERBOOT_SETJMP_H */ |