source: trunk/minix/include/minix/jmp_buf.h@ 9

/* This file is intended for use by assembly language programs that
 * need to manipulate a jmp_buf.  It may only be used by those systems
 * for which a jmp_buf is identical to a struct sigcontext.
 */

#ifndef _JMP_BUF_H
#define _JMP_BUF_H

#if !defined(CHIP)
#include "error, configuration is not known"
#endif

#if (CHIP == INTEL)
#if _WORD_SIZE == 4
#define JB_FLAGS         0
#define JB_MASK          4
#define JB_GS            8
#define JB_FS           10
#define JB_ES           12
#define JB_DS           14
#define JB_DI           16
#define JB_SI           20
#define JB_BP           24
#define JB_ST           28
#define JB_BX           32
#define JB_DX           36
#define JB_CX           40
#define JB_AX           44
#define JB_RETADR       48
#define JB_IP           52
#define JB_CS           56
#define JB_PSW          60
#define JB_SP           64
#define JB_SS           68
#else /* _WORD_SIZE == 2 */
#define JB_FLAGS         0
#define JB_MASK          2
#define JB_ES            6
#define JB_DS            8 
#define JB_DI           10
#define JB_SI           12
#define JB_BP           14
#define JB_ST           16
#define JB_BX           18
#define JB_DX           20
#define JB_CX           22
#define JB_AX           24
#define JB_RETADR       26
#define JB_IP           28
#define JB_CS           30
#define JB_PSW          32
#define JB_SP           34
#define JB_SS           36
#endif /* _WORD_SIZE == 2 */
#else /* !(CHIP == INTEL) */
#if (CHIP == M68000)
#define JB_FLAGS         0
#define JB_MASK          2
#define JB_RETREG        6
#define JB_D1           10
#define JB_D2           14
#define JB_D3           18
#define JB_D4           22
#define JB_D5           26
#define JB_D6           20
#define JB_D7           34
#define JB_A0           38
#define JB_A1           42
#define JB_A2           46
#define JB_A3           50
#define JB_A4           54
#define JB_A5           58
#define JB_A6           62
#define JB_SP           66
#define JB_PC           70
#define JB_PSW          74
#else /* !(CHIP == INTEL) && !(CHIP == M68000) */
#include "error, CHIP is not supported"
#endif /* (CHIP == INTEL) */

/* Defines from C headers needed in assembly code.  The headers have too
 * much C stuff to used directly.
 */
#define SIG_BLOCK       0       /* must agree with <signal.h> */
#define SC_SIGCONTEXT   2       /* must agree with <sys/sigcontext.h> */
#define SC_NOREGLOCALS  4       /* must agree with <sys/sigcontext.h> */
#endif /* _JMP_BUF_H */