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- /* $Id$ */
- /*
- * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
- * See the copyright notice in the ACK home directory, in the file "Copyright".
- */
- /*
- * Motorola 68020 dependent C declarations
- */
- #define low3(z) ((short)(z) & 07)
- #define low4(z) ((short)(z) & 017)
- #define low5(z) ((short)(z) & 037)
- #define low6(z) ((short)(z) & 077)
- #define low7(z) ((short)(z) & 0177)
- #define fit3(z) ((((z)-1) & ~((int)07)) == 0)
- #define fit4(z) (((z) & ~((int)017)) == 0)
- #define fit5(z) (((z) & ~((int)037)) == 0)
- #define fit6(z) (((z) & ~((int)077)) == 0)
- #define fit7(z) (((z) & ~((int)0177)) == 0)
- #define sfit7(z) (fit7((z)+64))
- #define fit8(z) (((z) & ~((int)0xFF)) == 0)
- #define fit16(z) (((z) & ~(0xFFFFL)) == 0)
- #define SIZE_B 0000
- #define SIZE_W 0100
- #define SIZE_L 0200
- #define SIZE_NON 0300
- #define SIZE_DEF SIZE_W
- #define FSIZE_L 00
- #define FSIZE_S 01
- #define FSIZE_X 02
- #define FSIZE_P 03
- #define FSIZE_W 04
- #define FSIZE_D 05
- #define FSIZE_B 06
- #define DEF_FP 01000 /* default floating point processor */
- #define DEF_MM 00000 /* default memory management */
- extern int co_id; /* coprocessor id */
- extern int mrg_1,mrg_2; /* Mode and ReGister */
- extern short ffew_1, ffew_2; /* Full Format Extension Word */
- extern expr_t bd_1,bd_2,od_1,od_2; /* base and outer displacements */
- #ifndef ASLD
- extern valu_t bd_rel1,bd_rel2,od_rel1,od_rel2;
- #endif
- #ifdef RELOCATION
- #ifdef ASLD
- #define T_EMIT2(a,b,c,d) t_emit2(a,b,c,(valu_t)0)
- #define T_EMIT4(a,b,c,d) t_emit4(a,b,c,(valu_t)0)
- #else /* ALSD */
- #define T_EMIT2(a,b,c,d) t_emit2(a,b,c,(valu_t)d)
- #define T_EMIT4(a,b,c,d) t_emit4(a,b,c,(valu_t)d)
- #endif /* ASLD */
- #else
- #define T_EMIT2(a,b,c,d) t_emit2(a)
- #define T_EMIT4(a,b,c,d) t_emit4(a)
- #endif
- struct instr_t {
- short i_word; /* word to be emitted */
- #ifdef RELOCATION
- short i_relotype;
- int i_reloinfo;
- valu_t i_relonami;
- #endif
- };
- typedef struct instr_t instr_t;
- extern instr_t instr[30]; /* temporary area for instructions */
- extern instr_t *instrp; /* index into instr[] */
- extern int dot_offset;
- /* flags used when reading effective addresses */
- #define INDEX 0300
- #define PRE_INDEX 0100
- #define POST_INDEX 0200
- #define DBL_INDEX 0300
- #define PC_MODE 0400
- /* addressing mode bits */
- #define DTA 0x01
- #define MEM 0x02
- #define CTR 0x04
- #define ALT 0x08
- #define FITB 0x10
- #define FITW 0x20
- #define PUTW 0x40
- #define PUTL 0x80
- extern int curr_instr;
- extern int curr_size;
- #ifndef extern
- extern short eamode[];
- #else
- short eamode[] = {
- /* 00A */ DTA |ALT,
- /* 01A */ ALT,
- /* 02A */ DTA|MEM|CTR|ALT,
- /* 03A */ DTA|MEM |ALT,
- /* 04A */ DTA|MEM |ALT,
- /* 05A */ DTA|MEM|CTR|ALT|FITW|PUTW, /* if relocation wanted, use 06A */
- /* 06A */ DTA|MEM|CTR|ALT |PUTW, /* relocation handled by ea_1() */
- /* 07x */ 0,
- /* 070 */ DTA|MEM|CTR|ALT|FITW|PUTW | (RELO2)<<8,
- /* 071 */ DTA|MEM|CTR|ALT |PUTL | (RELO4)<<8,
- /* 072 */ DTA|MEM|CTR |FITW|PUTW, /* if relocation wanted, use 073 */
- /* 073 */ DTA|MEM|CTR |PUTW, /* relocation handled by ea_1() */
- /* 074x */ 0,
- /* 074B */ DTA|MEM |FITB|PUTW | (RELO1)<<8,
- /* 074W */ DTA|MEM |FITW|PUTW | (RELO2)<<8,
- /* 074L */ DTA|MEM |PUTL | (RELO4)<<8,
- };
- /* RELO2 had to go with mode 070, because the assembly
- * language programmer can use addresses like
- * '(expression).w', which still have to be relocatable.
- */
- #endif
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