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1.1 root 1: /*
2: * A debugger.
3: * Tables for the Intel 8086.
4: */
5: #include <stdio.h>
6: #include <sys/const.h>
7: #include <l.out.h>
8: #include "trace.h"
9: #include "i8086.h"
10:
11: /*
12: * Instruction table.
13: */
14: INS insrtab[] ={
15: 0x88, 0xFC, "mov%0t\t%1d",
16: 0xC6, 0xFE, "mov%0t\t%nf0m,$%ik",
17: 0xB0, 0xF0, "mov%3t\t%0r,$%ik",
18: 0xA0, 0xFE, "mov%0t\t%x,%:wp",
19: 0xA2, 0xFE, "mov%0t\t%:wp,%x",
20: 0x8E, 0xFF, "mov\t%n5z3s,%m",
21: 0x8C, 0xFF, "mov\t%n5zm,%3s",
22: 0xFF, 0xFF, "push\t%nf6m",
23: 0x50, 0xF8, "push\t%0r",
24: 0x06, 0xE7, "push\t%3s",
25: 0x8F, 0xFF, "pop\t%nf0m",
26: 0x58, 0xF8, "pop\t%0r",
27: 0x07, 0xE7, "pop\t%3s",
28: 0x86, 0xFE, "xchg%0t\t%n3r,%m",
29: 0x90, 0xF8, "xchg\t%x,%0r",
30: 0xE4, 0xFE, "in%0t\t%x,%bl",
31: 0xEC, 0xFE, "in%0t\t%x,dx",
32: 0xE6, 0xFE, "out%0t\t%bl,%x",
33: 0xEE, 0xFE, "out%0t\tdx,%x",
34: 0xD7, 0xFF, "xlat",
35: 0x8D, 0xFF, "lea\t%n3r,%m",
36: 0xC5, 0xFF, "lds\t%n3r,%m",
37: 0xC4, 0xFF, "les\t%n3r,%m",
38: 0x9F, 0xFF, "lahf",
39: 0x9E, 0xFF, "sahf",
40: 0x9C, 0xFF, "pushf",
41: 0x9D, 0xFF, "popf",
42: 0x00, 0xFC, "add%0t\t%1d",
43: 0x80, 0xFC, "add%0t\t%1enf0m,$%ik",
44: 0x04, 0xFE, "add%0t\t%x,$%ik",
45: 0x10, 0xFC, "adc%0t\t%1d",
46: 0x80, 0xFC, "adc%0t\t%1enf2m,$%ik",
47: 0x14, 0xFE, "adc%0t\t%x,$%ik",
48: 0xFE, 0xFE, "inc%0t\t%nf0m",
49: 0x40, 0xF8, "inc\t%0r",
50: 0x37, 0xFF, "aaa",
51: 0x27, 0xFF, "daa",
52: 0x28, 0xFC, "sub%0t\t%1d",
53: 0x80, 0xFC, "sub%0t\t%1enf5m,$%ik",
54: 0x2C, 0xFE, "sub%0t\t%x,$%ik",
55: 0x18, 0xFC, "sbb%0t\t%1d",
56: 0x80, 0xFC, "sbb%0t\t%1enf3m,$%ik",
57: 0x1C, 0xFE, "sbb%0t\t%x,$%ik",
58: 0xFE, 0xFE, "dec%0t\t%nf1m",
59: 0x48, 0xF8, "dec\t%0r",
60: 0xF6, 0xFE, "neg%0t\t%nf3m",
61: 0x38, 0xFC, "cmp%0t\t%1d",
62: 0x80, 0xFC, "cmp%0t\t%1enf7m,$%ik",
63: 0x3C, 0xFE, "cmp%0t\t%x,$%ik",
64: 0x3F, 0xFF, "aas",
65: 0x2F, 0xFF, "das",
66: 0xF6, 0xFE, "mul%0t\t%x,%nf4m",
67: 0xF6, 0xFE, "imul%0t\t%x,%nf5m",
68: 0xD4, 0xFF, "aam%n%g",
69: 0xF6, 0xFE, "div%0t\t%x,%nf6m",
70: 0xF6, 0xFE, "idiv%0t\t%x,%nf7m",
71: 0xD5, 0xFF, "aad%n%g",
72: 0x98, 0xFF, "cbw",
73: 0x99, 0xFF, "cwd",
74: 0xF6, 0xFE, "not%0t\t%nf2m",
75: 0xD0, 0xFC, "shl%0t\t%nf4m,%1v",
76: 0xD0, 0xFC, "shr%0t\t%nf5m,%1v",
77: 0xD0, 0xFC, "sar%0t\t%nf7m,%1v",
78: 0xD0, 0xFC, "rol%0t\t%nf0m,%1v",
79: 0xD0, 0xFC, "ror%0t\t%nf1m,%1v",
80: 0xD0, 0xFC, "rcl%0t\t%nf2m,%1v",
81: 0xD0, 0xFC, "rcr%0t\t%nf3m,%1v",
82: 0x20, 0xFC, "and%0t\t%1d",
83: 0x80, 0xFE, "and%0t\t%nf4m,$%ik",
84: 0x24, 0xFE, "and%0t\t%x,$%ik",
85: 0x10, 0xFC, "test%0t\t%1d",
86: 0xF6, 0xFE, "test%0t\t%nf0m,$%ik",
87: 0xA8, 0xFE, "test%0t\t%x,$%ik",
88: 0x08, 0xFC, "or%0t\t%1d",
89: 0x80, 0xFE, "or%0t\t%nf1m,$%ik",
90: 0x0C, 0xFE, "or%0t\t%x,$%ik",
91: 0x30, 0xFC, "xor%0t\t%1d",
92: 0x34, 0xFE, "xor%0t\t%nf6m,$%ik",
93: 0x34, 0xFE, "xor%0t\t%x,$%ik",
94: 0xF2, 0xFF, "rep",
95: 0xF3, 0xFF, "repnz",
96: 0xA4, 0xFE, "movs%0t",
97: 0xA6, 0xFE, "cmps%0t",
98: 0xAE, 0xFE, "scas%0t",
99: 0xAC, 0xFE, "lods%0t",
100: 0xAA, 0xFE, "stos%0t",
101: 0xE8, 0xFF, "call\t%woq",
102: 0xFF, 0xFF, "icall\t%nf2m",
103: 0x9A, 0xFF, "xcall\t%wP",
104: 0xFF, 0xFF, "xcall\t%nf3m",
105: 0xE9, 0xFF, "jmp\t%wol",
106: 0xEB, 0xFF, "jmp\t%bol",
107: 0xFF, 0xFF, "ijmp\t%nf4m",
108: 0xEA, 0xFF, "xjmp\t%wP",
109: 0xFF, 0xFF, "xjmp\t%nf5m",
110: 0xC3, 0xFF, "ret",
111: 0xC2, 0xFF, "ret\t%wk",
112: 0xCB, 0xFF, "xret",
113: 0xCA, 0xFF, "xret\t%wk",
114: 0x70, 0xF0, "%j\t%bol",
115: 0xE2, 0xFF, "loop\t%bol",
116: 0xE1, 0xFF, "loope\t%bol",
117: 0xE0, 0xFF, "loopne\t%bol",
118: 0xE3, 0xFF, "jcxz\t%bol",
119: 0xCD, 0xFF, "%uy",
120: 0xCC, 0xFF, "int\t3",
121: 0xCE, 0xFF, "into",
122: 0xCF, 0xFF, "iret",
123: 0xF8, 0xFF, "clc",
124: 0xF5, 0xFF, "cmc",
125: 0xF9, 0xFF, "stc",
126: 0xFC, 0xFF, "cld",
127: 0xFD, 0xFF, "std",
128: 0xFA, 0xFF, "cli",
129: 0xFB, 0xFF, "sti",
130: 0xF4, 0xFF, "hlt",
131: 0x9B, 0xFF, "wait",
132: 0xD8, 0xF8, "%F",
133: 0xF0, 0xFF, "lock",
134: 0x00, 0x00, NULL
135: };
136:
137: /*
138: * 8087 Instruction table.
139: * The bits considered are the last 3 bits of the ESC
140: * instruction and the next instruction byte.
141: */
142: INS fpinstab[] = {
143: 0x000, 0x138, "fadd?",
144: 0x0C0, 0x1F8, "fadd\tST(i)?",
145: 0x020, 0x130, "fsubb?",
146: 0x0E0, 0x1F0, "fsub\tST(i)?",
147: 0x008, 0x138, "fmul?",
148: 0x0C8, 0x1F8, "fmul\tST(i)?",
149: 0x030, 0x130, "fdiv?",
150: 0x0F0, 0x1F0, "fdiv\tST(i)?",
151: 0x1FA, 0x7FF, "fsqrt",
152: 0x1FD, 0x7FF, "fscale",
153: 0x1F8, 0x7FF, "fprem",
154: 0x1FC, 0x7FF, "frndint",
155: 0x1F4, 0x7FF, "fxtract",
156: 0x1E1, 0x7FF, "fabs",
157: 0x1E0, 0x7FF, "fchs",
158: 0x1F2, 0x7FF, "fptan",
159: 0x1F3, 0x7FF, "fpatan",
160: 0x1F0, 0x7FF, "f2xm1",
161: 0x1F1, 0x7FF, "fyl2x",
162: 0x1F9, 0x7FF, "fyl2p1",
163: 0x1EE, 0x7FF, "fldz",
164: 0x1E8, 0x7FF, "fld1",
165: 0x1EB, 0x7FF, "fldpi",
166: 0x1E9, 0x7FF, "fldl2t",
167: 0x1EA, 0x7FF, "fldl2e",
168: 0x1EC, 0x7FF, "fldlg2",
169: 0x1ED, 0x7FF, "fldln2",
170: 0x3E3, 0x7FF, "finit",
171: 0x3E0, 0x77FF, "feni",
172: 0x3E1, 0x7FF, "fdisi",
173: 0x128, 0x738, "fldcw?",
174: 0x138, 0x738, "fstcw?",
175: 0x538, 0x738, "fstsw?",
176: 0x3E2, 0x7FF, "fclex",
177: 0x130, 0x738, "fstenv?",
178: 0x120, 0x738, "fldenv?",
179: 0x530, 0x738, "fsave?",
180: 0x520, 0x738, "frstor?",
181: 0x1F7, 0x7FF, "fincstp",
182: 0x1F6, 0x7FF, "fdecstp",
183: 0x5C0, 0x7F8, "ffree\tST(i)?",
184: 0x1D0, 0x7FF, "fnop",
185: };
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