rmsetjmp.h

Go to the documentation of this file.

#ifndef _RMSETJMP_H
#define _RMSETJMP_H

FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );

#include <setjmp.h>
#include <realmode.h>

/** A real-mode-extended jump buffer */
typedef struct {
        /** Jump buffer */
        jmp_buf env;
        /** Real-mode stack pointer */
        segoff_t rm_stack;
} rmjmp_buf[1];

#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 /* _RMSETJMP_H */