/
iasm.h
430 lines (372 loc) · 15 KB
/
iasm.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
/*
* Copyright (c) 1992-1999 by Symantec
* Copyright (c) 1999-2016 by Digital Mars
* All Rights Reserved
* http://www.digitalmars.com
* Written by Mike Cote, John Micco and Walter Bright
*
* This source file is made available for personal use
* only. The license is in backendlicense.txt
* For any other uses, please contact Digital Mars.
*/
#include <setjmp.h>
/////////////////////////////////////////////////
// Instruction flags (usFlags)
//
//
// This is for when the reg field of modregrm specifies which instruction it is
#define NUM_MASK 0x7
#define NUM_MASKR 0x8 // for REX extended registers
#define _0 (0x0 | _modrm) // insure that some _modrm bit is set
#define _1 0x1 // with _0
#define _2 0x2
#define _3 0x3
#define _4 0x4
#define _5 0x5
#define _6 0x6
#define _7 0x7
#define _modrm 0x10
#define _r _modrm
#define _cb _modrm
#define _cw _modrm
#define _cd _modrm
#define _cq _modrm
#define _cp _modrm
#define _ib 0
#define _iw 0
#define _id 0
#define _rb 0
#define _rw 0
#define _rd 0
#define _16_bit 0x20
#define _32_bit 0x40
#define _64_bit 0x10000
#define _i64_bit 0x20000 // opcode is invalid in 64bit mode
#define _I386 0x80 // opcode is only for 386 and later
#define _16_bit_addr 0x100
#define _32_bit_addr 0x200
#define _fwait 0x400 // Add an FWAIT prior to the instruction opcode
#define _nfwait 0x800 // Do not add an FWAIT prior to the instruction
#define MOD_MASK 0xF000 // Mod mask
#define _modsi 0x1000 // Instruction modifies SI
#define _moddx 0x2000 // Instruction modifies DX
#define _mod2 0x3000 // Instruction modifies second operand
#define _modax 0x4000 // Instruction modifies AX
#define _modnot1 0x5000 // Instruction does not modify first operand
#define _modaxdx 0x6000 // instruction modifies AX and DX
#define _moddi 0x7000 // Instruction modifies DI
#define _modsidi 0x8000 // Instruction modifies SI and DI
#define _modcx 0x9000 // Instruction modifies CX
#define _modes 0xa000 // Instruction modifies ES
#define _modall 0xb000 // Instruction modifies all register values
#define _modsiax 0xc000 // Instruction modifies AX and SI
#define _modsinot1 0xd000 // Instruction modifies SI and not first param
#define _modcxr11 0xe000 // Instruction modifies CX and R11
#define _modxmm0 0xf000 // Instruction modifies XMM0
// translates opcode into equivalent vex encoding
#define VEX_128_W0(op) (_VEX(op)|_VEX_NOO)
#define VEX_128_W1(op) (_VEX(op)|_VEX_NOO|_VEX_W)
#define VEX_128_WIG(op) VEX_128_W0(op)
#define VEX_256_W0(op) (_VEX(op)|_VEX_NOO|_VEX_L)
#define VEX_256_W1(op) (_VEX(op)|_VEX_NOO|_VEX_W|_VEX_L)
#define VEX_256_WIG(op) VEX_256_W0(op)
#define VEX_NDS_128_W0(op) (_VEX(op)|_VEX_NDS)
#define VEX_NDS_128_W1(op) (_VEX(op)|_VEX_NDS|_VEX_W)
#define VEX_NDS_128_WIG(op) VEX_NDS_128_W0(op)
#define VEX_NDS_256_W0(op) (_VEX(op)|_VEX_NDS|_VEX_L)
#define VEX_NDS_256_W1(op) (_VEX(op)|_VEX_NDS|_VEX_W|_VEX_L)
#define VEX_NDS_256_WIG(op) VEX_NDS_256_W0(op)
#define VEX_NDD_128_W0(op) (_VEX(op)|_VEX_NDD)
#define VEX_NDD_128_W1(op) (_VEX(op)|_VEX_NDD|_VEX_W)
#define VEX_NDD_128_WIG(op) VEX_NDD_128_W0(op)
#define VEX_NDD_256_W0(op) (_VEX(op)|_VEX_NDD|_VEX_L)
#define VEX_NDD_256_W1(op) (_VEX(op)|_VEX_NDD|_VEX_W|_VEX_L)
#define VEX_NDD_256_WIG(op) VEX_NDD_256_W0(op)
#define VEX_DDS_128_W0(op) (_VEX(op)|_VEX_DDS)
#define VEX_DDS_128_W1(op) (_VEX(op)|_VEX_DDS|_VEX_W)
#define VEX_DDS_128_WIG(op) VEX_DDS_128_W0(op)
#define VEX_DDS_256_W0(op) (_VEX(op)|_VEX_DDS|_VEX_L)
#define VEX_DDS_256_W1(op) (_VEX(op)|_VEX_DDS|_VEX_W|_VEX_L)
#define VEX_DDS_256_WIG(op) VEX_DDS_256_W0(op)
#define _VEX_W 0x8000
/* Don't encode LIG/LZ use 128 for these.
*/
#define _VEX_L 0x0400
/* Encode nds, ndd, dds in the vvvv field, it gets
* overwritten with the actual register later.
*/
#define VEX_NOO 0 // neither of nds, ndd, dds
#define VEX_NDS 1
#define VEX_NDD 2
#define VEX_DDS 3
#define _VEX_NOO ( VEX_NOO << 11)
#define _VEX_NDS ( VEX_NDS << 11)
#define _VEX_NDD ( VEX_NDD << 11)
#define _VEX_DDS ( VEX_DDS << 11)
#define _VEX(op) (0xC4 << 24 | _VEX_MM(op >> 8) | (op & 0xFF))
#define _VEX_MM(op) \
( \
((op) & 0x00FF) == 0x000F ? (0x1 << 16 | _VEX_PP((op) >> 8)) : \
((op) & 0xFFFF) == 0x0F38 ? (0x2 << 16 | _VEX_PP((op) >> 16)) : \
((op) & 0xFFFF) == 0x0F3A ? (0x3 << 16 | _VEX_PP((op) >> 16)) : \
_VEX_ASSERT0 \
)
#define _VEX_PP(op) \
( \
(op) == 0x00 ? 0x00 << 8 : \
(op) == 0x66 ? 0x01 << 8 : \
(op) == 0xF3 ? 0x02 << 8 : \
(op) == 0xF2 ? 0x03 << 8 : \
_VEX_ASSERT0 \
)
// avoid dynamic initialization of the asm tables
#if DEBUG
#define _VEX_ASSERT0 (assert(0))
#else
#define _VEX_ASSERT0 (0)
#endif
/////////////////////////////////////////////////
// Operand flags - usOp1, usOp2, usOp3
//
typedef unsigned opflag_t;
// Operand flags for normal opcodes
#define _r8 CONSTRUCT_FLAGS( _8, _reg, _normal, 0 )
#define _r16 CONSTRUCT_FLAGS(_16, _reg, _normal, 0 )
#define _r32 CONSTRUCT_FLAGS(_32, _reg, _normal, 0 )
#define _r64 CONSTRUCT_FLAGS(_64, _reg, _normal, 0 )
#define _m8 CONSTRUCT_FLAGS(_8, _m, _normal, 0 )
#define _m16 CONSTRUCT_FLAGS(_16, _m, _normal, 0 )
#define _m32 CONSTRUCT_FLAGS(_32, _m, _normal, 0 )
#define _m48 CONSTRUCT_FLAGS( _48, _m, _normal, 0 )
#define _m64 CONSTRUCT_FLAGS( _64, _m, _normal, 0 )
#define _m128 CONSTRUCT_FLAGS( _anysize, _m, _normal, 0 )
#define _m256 CONSTRUCT_FLAGS( _anysize, _m, _normal, 0 )
#define _rm8 CONSTRUCT_FLAGS(_8, _rm, _normal, 0 )
#define _rm16 CONSTRUCT_FLAGS(_16, _rm, _normal, 0 )
#define _rm32 CONSTRUCT_FLAGS(_32, _rm, _normal, 0)
#define _rm64 CONSTRUCT_FLAGS(_64, _rm, _normal, 0)
#define _r32m8 CONSTRUCT_FLAGS(_32|_8, _rm, _normal, 0)
#define _r32m16 CONSTRUCT_FLAGS(_32|_16, _rm, _normal, 0)
#define _regm8 CONSTRUCT_FLAGS(_64|_32|_8, _rm, _normal, 0)
#define _imm8 CONSTRUCT_FLAGS(_8, _imm, _normal, 0 )
#define _imm16 CONSTRUCT_FLAGS(_16, _imm, _normal, 0)
#define _imm32 CONSTRUCT_FLAGS(_32, _imm, _normal, 0)
#define _imm64 CONSTRUCT_FLAGS(_64, _imm, _normal, 0)
#define _rel8 CONSTRUCT_FLAGS(_8, _rel, _normal, 0)
#define _rel16 CONSTRUCT_FLAGS(_16, _rel, _normal, 0)
#define _rel32 CONSTRUCT_FLAGS(_32, _rel, _normal, 0)
#define _p1616 CONSTRUCT_FLAGS(_32, _p, _normal, 0)
#define _m1616 CONSTRUCT_FLAGS(_32, _mnoi, _normal, 0)
#define _p1632 CONSTRUCT_FLAGS(_48, _p, _normal, 0 )
#define _m1632 CONSTRUCT_FLAGS(_48, _mnoi, _normal, 0)
#define _special CONSTRUCT_FLAGS( 0, 0, _rspecial, 0 )
#define _seg CONSTRUCT_FLAGS( 0, 0, _rseg, 0 )
#define _a16 CONSTRUCT_FLAGS( 0, 0, _addr16, 0 )
#define _a32 CONSTRUCT_FLAGS( 0, 0, _addr32, 0 )
#define _f16 CONSTRUCT_FLAGS( 0, 0, _fn16, 0)
// Near function pointer
#define _f32 CONSTRUCT_FLAGS( 0, 0, _fn32, 0)
// Far function pointer
#define _lbl CONSTRUCT_FLAGS( 0, 0, _flbl, 0 )
// Label (in current function)
#define _mmm32 CONSTRUCT_FLAGS( 0, _m, 0, _32)
#define _mmm64 CONSTRUCT_FLAGS( _64, _m, 0, _f64)
#define _mmm128 CONSTRUCT_FLAGS( 0, _m, 0, _f128)
#define _xmm_m16 CONSTRUCT_FLAGS( _16, _m, _rspecial, ASM_GET_uRegmask(_xmm))
#define _xmm_m32 CONSTRUCT_FLAGS( _32, _m, _rspecial, ASM_GET_uRegmask(_xmm))
#define _xmm_m64 CONSTRUCT_FLAGS( _anysize, _m, _rspecial, ASM_GET_uRegmask(_xmm))
#define _xmm_m128 CONSTRUCT_FLAGS( _anysize, _m, _rspecial, ASM_GET_uRegmask(_xmm))
#define _ymm_m256 CONSTRUCT_FLAGS( _anysize, _m, _rspecial, ASM_GET_uRegmask(_ymm))
#define _moffs8 (_rel8)
#define _moffs16 (_rel16 )
#define _moffs32 (_rel32 )
////////////////////////////////////////////////////////////////////
// Operand flags for floating point opcodes are all just aliases for
// normal opcode variants and only asm_determine_operator_flags should
// need to care.
//
#define _fm80 CONSTRUCT_FLAGS( 0, _m, 0, _f80 )
#define _fm64 CONSTRUCT_FLAGS( 0, _m, 0, _f64 )
#define _fm128 CONSTRUCT_FLAGS( 0, _m, 0, _f128 )
#define _fanysize (_f64 | _f80 | _f112 )
#define _float_m CONSTRUCT_FLAGS( _anysize, _float, 0, _fanysize)
#define _st CONSTRUCT_FLAGS( 0, _float, 0, _rst ) // stack register 0
#define _m112 CONSTRUCT_FLAGS( 0, _m, 0, _f112 )
#define _m224 _m112
#define _m512 _m224
#define _sti CONSTRUCT_FLAGS( 0, _float, 0, _rsti )
////////////////// FLAGS /////////////////////////////////////
#if 1
// bit size 5 3 3 7
#define CONSTRUCT_FLAGS( uSizemask, aopty, amod, uRegmask ) \
( (uSizemask) | (aopty) << 5 | (amod) << 8 | (uRegmask) << 11)
#define ASM_GET_uSizemask(us) ((us) & 0x1F)
#define ASM_GET_aopty(us) ((ASM_OPERAND_TYPE)(((us) >> 5) & 7))
#define ASM_GET_amod(us) ((ASM_MODIFIERS)(((us) >> 8) & 7))
#define ASM_GET_uRegmask(us) (((us) >> 11) & 0x7F)
#else
#define CONSTRUCT_FLAGS( uSizemask, aopty, amod, uRegmask ) \
( (uSizemask) | (aopty) << 4 | (amod) << 7 | (uRegmask) << 10)
#define ASM_GET_uSizemask(us) ((us) & 0x0F)
#define ASM_GET_aopty(us) ((ASM_OPERAND_TYPE)(((us) & 0x70) >> 4))
#define ASM_GET_amod(us) ((ASM_MODIFIERS)(((us) & 0x380) >> 7))
#define ASM_GET_uRegmask(us) (((us) & 0xFC00) >> 10)
#endif
// For uSizemask (5 bits)
#define _8 0x1
#define _16 0x2
#define _32 0x4
#define _48 0x8
#define _64 0x10
#define _anysize (_8 | _16 | _32 | _48 | _64 )
// For aopty (3 bits)
enum ASM_OPERAND_TYPE {
_reg, // _r8, _r16, _r32
_m, // _m8, _m16, _m32, _m48
_imm, // _imm8, _imm16, _imm32, _imm64
_rel, // _rel8, _rel16, _rel32
_mnoi, // _m1616, _m1632
_p, // _p1616, _p1632
_rm, // _rm8, _rm16, _rm32
_float // Floating point operand, look at cRegmask for the
// actual size
};
// For amod (3 bits)
enum ASM_MODIFIERS {
_normal, // Normal register value
_rseg, // Segment registers
_rspecial, // Special registers
_addr16, // 16 bit address
_addr32, // 32 bit address
_fn16, // 16 bit function call
_fn32, // 32 bit function call
_flbl // Label
};
// For uRegmask (7 bits)
// uRegmask flags when aopty == _float
#define _rst 0x1
#define _rsti 0x2
#define _f64 0x4
#define _f80 0x8
#define _f112 0x10
#define _f128 0x20
// _seg register values (amod == _rseg)
//
#define _ds CONSTRUCT_FLAGS( 0, 0, _rseg, 0x01 )
#define _es CONSTRUCT_FLAGS( 0, 0, _rseg, 0x02 )
#define _ss CONSTRUCT_FLAGS( 0, 0, _rseg, 0x04 )
#define _fs CONSTRUCT_FLAGS( 0, 0, _rseg, 0x08 )
#define _gs CONSTRUCT_FLAGS( 0, 0, _rseg, 0x10 )
#define _cs CONSTRUCT_FLAGS( 0, 0, _rseg, 0x20 )
//
// _special register values
//
#define _crn CONSTRUCT_FLAGS( 0, 0, _rspecial, 0x01 ) // CRn register (0,2,3)
#define _drn CONSTRUCT_FLAGS( 0, 0, _rspecial, 0x02 ) // DRn register (0-3,6-7)
#define _trn CONSTRUCT_FLAGS( 0, 0, _rspecial, 0x04 ) // TRn register (3-7)
#define _mm CONSTRUCT_FLAGS( 0, 0, _rspecial, 0x08 ) // MMn register (0-7)
#define _xmm CONSTRUCT_FLAGS( 0, 0, _rspecial, 0x10 ) // XMMn register (0-7)
#define _xmm0 CONSTRUCT_FLAGS( 0, 0, _rspecial, 0x20 ) // XMM0 register
#define _ymm CONSTRUCT_FLAGS( 0, 0, _rspecial, 0x40 ) // YMMn register (0-15)
//
// Default register values
//
#define _al CONSTRUCT_FLAGS( 0, 0, _normal, 0x01 ) // AL register
#define _ax CONSTRUCT_FLAGS( 0, 0, _normal, 0x02 ) // AX register
#define _eax CONSTRUCT_FLAGS( 0, 0, _normal, 0x04 ) // EAX register
#define _dx CONSTRUCT_FLAGS( 0, 0, _normal, 0x08 ) // DX register
#define _cl CONSTRUCT_FLAGS( 0, 0, _normal, 0x10 ) // CL register
#define _rax CONSTRUCT_FLAGS( 0, 0, _normal, 0x40 ) // RAX register
#define _rplus_r 0x20
#define _plus_r CONSTRUCT_FLAGS( 0, 0, 0, _rplus_r )
// Add the register to the opcode (no mod r/m)
//////////////////////////////////////////////////////////////////
#define ITprefix 0x10 // special prefix
#define ITjump 0x20 // jump instructions CALL, Jxx and LOOPxx
#define ITimmed 0x30 // value of an immediate operand controls
// code generation
#define ITopt 0x40 // not all operands are required
#define ITshift 0x50 // rotate and shift instructions
#define ITfloat 0x60 // floating point coprocessor instructions
#define ITdata 0x70 // DB, DW, DD, DQ, DT pseudo-ops
#define ITaddr 0x80 // DA (define addresss) pseudo-op
#define ITMASK 0xF0
#define ITSIZE 0x0F // mask for size
enum OP_DB
{
#if SCPP
// These are the number of bytes
OPdb = 1,
OPdw = 2,
OPdd = 4,
OPdq = 8,
OPdt = 10,
OPdf = 4,
OPde = 10,
OPds = 2,
OPdi = 4,
OPdl = 8,
#endif
#if MARS
// Integral types
OPdb,
OPds,
OPdi,
OPdl,
// Float types
OPdf,
OPdd,
OPde,
// Deprecated
OPdw = OPds,
OPdq = OPdl,
OPdt = OPde,
#endif
};
/* from iasm.c */
int asm_state(int iFlags);
void asm_process_fixup( block **ppblockLabels );
typedef struct _PTRNTAB4 {
int opcode;
unsigned usFlags;
opflag_t usOp1;
opflag_t usOp2;
opflag_t usOp3;
opflag_t usOp4;
} PTRNTAB4, * PPTRNTAB4, ** PPPTRNTAB4;
typedef struct _PTRNTAB3 {
int opcode;
unsigned usFlags;
opflag_t usOp1;
opflag_t usOp2;
opflag_t usOp3;
} PTRNTAB3, * PPTRNTAB3, ** PPPTRNTAB3;
typedef struct _PTRNTAB2 {
int opcode;
unsigned usFlags;
opflag_t usOp1;
opflag_t usOp2;
} PTRNTAB2, * PPTRNTAB2, ** PPPTRNTAB2;
typedef struct _PTRNTAB1 {
int opcode;
unsigned usFlags;
opflag_t usOp1;
} PTRNTAB1, * PPTRNTAB1, ** PPPTRNTAB1;
typedef struct _PTRNTAB0 {
int opcode;
#define ASM_END 0xffff // special opcode meaning end of table
unsigned usFlags;
} PTRNTAB0, * PPTRNTAB0, ** PPPTRNTAB0;
typedef union _PTRNTAB {
void *ppt; // avoid type-punning warnings
PTRNTAB0 *pptb0;
PTRNTAB1 *pptb1;
PTRNTAB2 *pptb2;
PTRNTAB3 *pptb3;
PTRNTAB4 *pptb4;
} PTRNTAB, * PPTRNTAB, ** PPPTRNTAB;
typedef struct
{
unsigned char usNumops;
PTRNTAB ptb;
} OP;