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1.1 root 1: /*
2: * h/i386/cc2mch.h
3: * Machine specific definitions for final phase
4: * of direct to bits C compiler (cc2).
5: * i386.
6: */
7:
8: #define UNCON ZJMP
9: #define ischnrel(rel) (rel!=ZLOOP && rel!=ZLOOPE && rel!=ZLOOPNE && rel!=ZJCXZ)
10: #define isrevrel(rel) (rel!=ZJMP && rel!=ZLOOP && rel!=ZLOOPE && rel!=ZLOOPNE && rel!=ZJCXZ)
11:
12: /*
13: * These definitions are used in the opcode table.
14: * They tell the coder the style of the instruction.
15: */
16: #define OF_BYTE 0 /* Byte data */
17: #define OF_CALL 1 /* Direct call */
18: #define OF_ICALL 2 /* Indirect call */
19: #define OF_IN 3 /* In */
20: #define OF_INH 4 /* Inherent (1 byte) */
21: #define OF_INH2 5 /* One byte, 0x0A prefix */
22: #define OF_INT 6 /* Interrupt */
23: #define OF_JMP 7 /* Jumps */
24: #define OF_LEA 8 /* Lea, lds, les */
25: #define OF_REL 9 /* Jcxz, loops */
26: #define OF_MUL 10 /* Mul and div */
27: #define OF_MOV 11 /* Moves */
28: #define OF_NRET 12 /* Return with pop of n */
29: #define OF_OUT 13 /* Out */
30: #define OF_POP 14 /* Pop */
31: #define OF_PUSH 15 /* Push */
32: #define OF_DOP 16 /* Double operand */
33: #define OF_SHR 17 /* Shifts */
34: #define OF_SOP 18 /* Single operand */
35: #define OF_WORD 19 /* Word data */
36: #define OF_XCALL 20 /* Cross segment calls */
37: #define OF_DOPS 21 /* Double op, sw encoding valid */
38: #define OF_FWAIT 22 /* FWAIT */
39: #define OF_FRM 23 /* Floating point, standard address */
40: #define OF_FD9 24 /* Single byte, D9 prefix */
41: #define OF_FDE 25 /* Single byte, DE prefix */
42: #define OF_LPTR 26 /* Local pointer (offset only) */
43: #define OF_GPTR 27 /* Global pointer (segment and offset) */
44: #define OF_FDD 28 /* Single byte, DD prefix */
45: #define OF_MUL3 29 /* Multiply immediate, 3 operands */
46: #define OF_2B 30 /* Two-byte, 0F prefix */
47: #define OF_LONG 31 /* Long data */
48:
49: #define is8087op(op) ((op)==OF_FWAIT||(op)==OF_FD9||(op)==OF_FDD||(op)==OF_FDE||(op)==OF_FRM)
50:
51: /* Flags. Watch out for OP_JUMP etc. defined in h/cc2.h. */
52: #define OP_BYTE 0010 /* Byte instruction */
53: #define OP_WORD 0020 /* Word instruction */
54: #define OP_DWORD 0040 /* Dword instruction */
55: #define OP_NPTR 0100 /* No PTR in output */
56:
57: /* If !EMUFIXUPS, the routines outf[bw]() write an absolute 8087 op. */
58: #if !EMUFIXUPS
59: #define outfb(b) outab(b)
60: #define outfw(w, pfx) outaw(w)
61: #endif
62:
63: /* Shorthand. */
64: #define af_p(ip, n) (&((ip)->i_af[n]))
65: #define MOD(afp) (((afp)->a_mode) & A_AMOD)
66: #define REGM(afp) (((afp)->a_mode) & A_REGM)
67: #define MODRM(afp) (((afp)->a_mode) & (A_AMOD|A_REGM))
68:
69: /*
70: * Externals.
71: */
72: extern ival_t framesize; /* Size of frame */
73: extern PREGSET usedregs; /* Registers used */
74: extern int hasfloat; /* -VNDP fp code used */
75:
76: /* end of h/i386/cc2mch.h */
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