2 * Copyright (C) 2024 Mikulas Patocka
4 * This file is part of Ajla.
6 * Ajla is free software: you can redistribute it and/or modify it under the
7 * terms of the GNU General Public License as published by the Free Software
8 * Foundation, either version 3 of the License, or (at your option) any later
11 * Ajla is distributed in the hope that it will be useful, but WITHOUT ANY
12 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
13 * A PARTICULAR PURPOSE. See the GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along with
16 * Ajla. If not, see <https://www.gnu.org/licenses/>.
19 #define X86_ALU_RM8_R8 0x00
20 #define X86_ALU_RM16_R16 0x01
21 #define X86_ALU_R8_RM8 0x02
22 #define X86_ALU_R16_RM16 0x03
23 #define X86_ALU_AL_IMM8 0x04
24 #define X86_ALU_AX_IMM16 0x05
31 #define X86_REX_B 0x01
32 #define X86_REX_X 0x02
33 #define X86_REX_R 0x04
34 #define X86_REX_W 0x08
35 #define X86_INC_R16 0x40
36 #define X86_DEC_R16 0x48
37 #define X86_PUSH_R16 0x50
38 #define X86_POP_R16 0x58
39 #define X86_MOVSXD 0x63
42 #define X86_OP_SIZE 0x66
43 #define X86_PUSH_IMM16 0x68
44 #define X86_IMUL_R16_RM16_IMM16 0x69
45 #define X86_PUSH_IMM8 0x6a
46 #define X86_IMUL_R16_RM16_IMM8 0x6b
47 #define X86_JCC_8 0x70
48 #define X86_ALU_RM8_IMM8 0x80
49 #define X86_ALU_RM16_IMM16 0x81
50 #define X86_ALU_RM16_IMM8 0x83
51 #define X86_TEST_RM8_R8 0x84
52 #define X86_TEST_RM16_R16 0x85
53 #define X86_MOV_RM8_R8 0x88
54 #define X86_MOV_RM16_R16 0x89
55 #define X86_MOV_R8_RM8 0x8a
56 #define X86_MOV_R16_RM16 0x8b
57 #define X86_LEA_R16_RM16 0x8d
60 #define X86_MOV_AL_M16 0xa0
61 #define X86_MOV_AX_M16 0xa1
62 #define X86_MOV_M16_AL 0xa2
63 #define X86_MOV_M16_AX 0xa3
64 #define X86_MOVSB 0xa4
65 #define X86_TEST_AL_IMM8 0xa8
66 #define X86_TEST_AX_IMM16 0xa9
67 #define X86_STOSB 0xaa
68 #define X86_MOV_R16_IMM16 0xb8
69 #define X86_ROT_RM8_IMM8 0xc0
70 #define X86_ROT_RM16_IMM8 0xc1
71 #define X86_RET_IMM16 0xc2
73 #define X86_VEX_3 0xc4
74 #define X86_VEX_2 0xc5
75 #define X86_MOV_RM8_IMM8 0xc6
76 #define X86_MOV_RM16_IMM16 0xc7
77 #define X86_MOV_R16_IMM16_REG 0x0
79 #define X86_8F_POP 0x0
80 #define X86_ROT_RM8_1 0xd0
81 #define X86_ROT_RM16_1 0xd1
82 #define X86_ROT_RM8_CL 0xd2
83 #define X86_ROT_RM16_CL 0xd3
84 #define X86_JMP_16 0xe9
85 #define X86_JMP_8 0xeb
86 #define X86_REPNE 0xf2
89 #define X86_F6_TEST_RM8_IMM8 0x0
90 #define X86_F6_NOT_RM8 0x2
91 #define X86_F6_NEG_RM8 0x3
92 #define X86_F6_MUL_RM8 0x4
93 #define X86_F6_IMUL_RM8 0x5
94 #define X86_F6_DIV_RM8 0x6
95 #define X86_F6_IDIV_RM8 0x7
97 #define X86_F7_TEST_RM16_IMM16 0x0
98 #define X86_F7_NOT_RM16 0x2
99 #define X86_F7_NEG_RM16 0x3
100 #define X86_F7_MUL_RM16 0x4
101 #define X86_F7_IMUL_RM16 0x5
102 #define X86_F7_DIV_RM16 0x6
103 #define X86_F7_IDIV_RM16 0x7
105 #define X86_FE_INC_RM8 0x0
106 #define X86_FE_DEC_RM8 0x1
108 #define X86_FF_INC_RM16 0x0
109 #define X86_FF_DEC_RM16 0x1
110 #define X86_FF_CALL_INDIRECT 0x2
111 #define X86_FF_JMP_INDIRECT 0x4
112 #define X86_FF_PUSH 0x6
114 #define X86_0F_MOVSS_X128_M32 0x10
115 #define X86_0F_MOVSS_M32_X128 0x11
116 #define X86_0F_MOVAPS_X128_M128 0x28
117 #define X86_0F_MOVAPS_M128_X128 0x29
118 #define X86_0F_CVTSI2SS_X128_RM32 0x2a
119 #define X86_0F_CVTTSS2SI_X128_RM32 0x2c
120 #define X86_0F_UCOMISS_X128_RM32 0x2e
121 #define X86_0F_38 0x38
122 #define X86_0F_3A 0x3a
123 #define X86_0F_CMOVCC_R16_RM16 0x40
124 #define X86_0F_SQRTPS_X128_M32 0x51
125 #define X86_0F_ANDPS_X128_M128 0x54
126 #define X86_0F_ANDNPS_X128_M128 0x55
127 #define X86_0F_ORPS_X128_M128 0x56
128 #define X86_0F_XORPS_X128_M128 0x57
129 #define X86_0F_ADDPS_X128_M32 0x58
130 #define X86_0F_MULPS_X128_M32 0x59
131 #define X86_0F_SUBPS_X128_M32 0x5c
132 #define X86_0F_DIVPS_X128_M32 0x5e
133 #define X86_0F_MOVD_X128_RM32 0x6e
134 #define X86_0F_MOVD_RM32_X128 0x7e
135 #define X86_0F_JCC_16 0x80
136 #define X86_0F_SETCC_RM8 0x90
137 #define X86_0F_BT_RM16_R16 0xa3
138 #define X86_0F_BTS_RM16_R16 0xab
139 #define X86_0F_BTR_RM16_R16 0xb3
140 #define X86_0F_BTX_RM16_IMM8 0xba
141 #define X86_0F_BTX_BT_RM16_IMM8 0x4
142 #define X86_0F_BTX_BTS_RM16_IMM8 0x5
143 #define X86_0F_BTX_BTR_RM16_IMM8 0x6
144 #define X86_0F_BTX_BTC_RM16_IMM8 0x7
145 #define X86_0F_BSWAP 0xc8
146 #define X86_0F_BTC_RM16_R16 0xbb
147 #define X86_0F_IMUL_R16_RM16 0xaf
148 #define X86_0F_MOVZX_R16_RM8 0xb6
149 #define X86_0F_MOVZX_R16_RM16 0xb7
150 #define X86_0F_POPCNT_R16_RM16 0xb8
151 #define X86_0F_BSF_R16_RM16 0xbc
152 #define X86_0F_BSR_R16_RM16 0xbd
153 #define X86_0F_MOVSX_R16_RM8 0xbe
154 #define X86_0F_MOVSX_R16_RM16 0xbf
155 #define X86_0F_PINSRW_X128_RM16_IMM8 0xc4
157 #define X86_0F_38_CVTPH2PS_X128_RM64 0x13
158 #define X86_0F_38_ROTX 0xf7
160 #define X86_0F_3A_ROUNDSS_X128_M32 0x0a
161 #define X86_0F_3A_ROUNDSD_X128_M64 0x0b
162 #define X86_0F_3A_PEXTRW_RM16_X128_IMM8 0x15
163 #define X86_0F_3A_CVTPS2PH_RM64_X128 0x1d
165 #define X87_FLD_RM32 0xd9
166 #define X87_FLD_RM32_X 0x0
167 #define X87_FLDCW 0xd9
168 #define X87_FLDCW_X 0x5
169 #define X87_FILD_M32 0xdb
170 #define X87_FILD_M32_X 0x0
171 #define X87_FISTTP_M32 0xdb
172 #define X87_FISTTP_M32_X 0x1
173 #define X87_FISTP_M32 0xdb
174 #define X87_FISTP_M32_X 0x3
175 #define X87_FLD_M80 0xdb
176 #define X87_FLD_M80_X 0x5
177 #define X87_FLD_M64 0xdd
178 #define X87_FLD_M64_X 0x0
179 #define X87_FSTP_M32 0xd9
180 #define X87_FSTP_M32_X 0x3
181 #define X87_FSTP_M80 0xdb
182 #define X87_FSTP_M80_X 0x7
183 #define X87_FSTP_RM64 0xdd
184 #define X87_FSTP_RM64_X 0x3
185 #define X87_FALU_ST_RM32 0xd8
186 #define X87_FCHS 0xd9
187 #define X87_FCHS_2 0xe0
188 #define X87_FSQRT 0xd9
189 #define X87_FSQRT_2 0xfa
190 #define X87_FRNDINT 0xd9
191 #define X87_FRNDINT_2 0xfc
192 #define X87_FALU_ST_M64 0xdc
193 #define X87_FALU_STi_ST 0xdc
194 #define X87_FISTTP_M64 0xdd
195 #define X87_FISTTP_M64_X 0x1
196 #define X87_FALUP_STi_ST0 0xde
197 #define X87_ALU_ADD 0x0
198 #define X87_ALU_MUL 0x1
199 #define X87_ALU_FCOM 0x2
200 #define X87_ALU_FCOMP 0x3
201 #define X87_ALU_SUBR 0x4
202 #define X87_ALU_SUB 0x5
203 #define X87_ALU_DIVR 0x6
204 #define X87_ALU_DIV 0x7
205 #define X87_FCOMPP 0xde
206 #define X87_FCOMPP_2 0xd9
207 #define X87_FILD_M16 0xdf
208 #define X87_FILD_M16_X 0x0
209 #define X87_FISTTP_M16 0xdf
210 #define X87_FISTTP_M16_X 0x1
211 #define X87_FISTP_M16 0xdf
212 #define X87_FISTP_M16_X 0x3
213 #define X87_FILD_M64 0xdf
214 #define X87_FILD_M64_X 0x5
215 #define X87_FISTP_M64 0xdf
216 #define X87_FISTP_M64_X 0x7
217 #define X87_FNSTSW 0xdf
218 #define X87_FNSTSW_2 0xe0
219 #define X87_FCOMIP 0xdf
220 #define X87_FCOMIP_2 0xf0
222 #define SSE_PREFIX_NONE 0
223 #define SSE_PREFIX_66 1
224 #define SSE_PREFIX_F3 2
225 #define SSE_PREFIX_F2 3
227 #define PREFIX_NONE 0
229 #define PREFIX_0F_38 2
230 #define PREFIX_0F_3A 3
233 #define cgen_rex(rex) internal(file_line, "cgen_rex: attempting to generate rex in 32-bit mode: %02x", rex)
235 #define cgen_rex(rex) cgen_one(rex)
238 #define force_vex 0x10000
240 static bool attr_w cgen_rm_insn(struct codegen_context *ctx, int32_t sse_prefix, uint8_t prefix, uint8_t opcode, unsigned size, bool reg_is_reg, uint8_t reg, uint8_t *arg)
242 uint8_t rex, mod, rm;
244 int64_t imm = 0; /* avoid warning */
249 if (unlikely(R_IS_XMM(reg)))
251 if (unlikely(R_IS_XMM(arg[0]))) {
252 arg_reg = arg[0] - R_XMM0;
255 if (unlikely(!R_IS_GPR(reg)))
256 internal(file_line, "cgen_rm_insn: invalid register %02x", reg);
260 if (size == OP_SIZE_8)
271 uint8_t *imm_ptr = arg + arg_size(arg[0]) - 8;
272 imm = get_imm(imm_ptr);
273 if (unlikely(!imm_is_32bit(imm)))
274 internal(file_line, "cgen_rm_insn: immediate out of range: %"PRIxMAX"", (uintmax_t)imm);
275 if (arg[0] == ARG_ADDRESS_0) {
285 } else if (imm >= -0x80 && imm <= 0x7f) {
290 if ((arg[1] & 7) == 0x5 && addr_size == 0)
294 else if (addr_size == 1)
298 if (arg[0] == ARG_ADDRESS_1) {
299 if (reg_is_segment(arg[1])) {
300 static const uint8_t segments[6] = { X86_ES, X86_CS, X86_SS, X86_DS, X86_FS, X86_GS };
301 cgen_one(segments[arg[1] - R_ES]);
306 if ((arg[1] & 7) == 0x4) {
314 if (arg[0] >= ARG_ADDRESS_1_2 && arg[0] <= ARG_ADDRESS_1_8) {
315 if (unlikely(arg[1] == R_SP))
316 internal(file_line, "cgen_rm_insn: attemptint to scale SP");
322 sib = ((arg[0] - ARG_ADDRESS_1) << 6) | ((arg[1] & 7) << 3) | 0x5;
325 if (arg[0] >= ARG_ADDRESS_2 && arg[0] <= ARG_ADDRESS_2_8) {
326 if (unlikely(arg[2] == R_SP))
327 internal(file_line, "cgen_rm_insn: attemptint to scale SP");
333 sib = ((arg[0] - ARG_ADDRESS_2) << 6) | ((arg[2] & 7) << 3) | (arg[1] & 7);
336 internal(file_line, "cgen_rm_insn: invalid argument %02x", arg[0]);
340 if (unlikely(sse_prefix >= 0)) {
341 if (likely(cpu_test_feature(CPU_FEATURE_avx)) || (sse_prefix & force_vex)) {
342 if ((rex & (X86_REX_X | X86_REX_B | X86_REX_W)) == 0 && prefix == PREFIX_0F) {
344 cgen_one((~rex & X86_REX_R) << 5 | (~(sse_prefix >> 8) & 0xf) << 3 | (sse_prefix & 3));
347 cgen_one((~rex & (X86_REX_R | X86_REX_X | X86_REX_B)) << 5 | prefix);
348 cgen_one((rex & X86_REX_W) << 4 | (~(sse_prefix >> 8) & 0xf) << 3 | (sse_prefix & 3));
352 switch (sse_prefix & 3) {
353 case SSE_PREFIX_66: cgen_one(X86_OP_SIZE); break;
354 case SSE_PREFIX_F3: cgen_one(X86_REPE); break;
355 case SSE_PREFIX_F2: cgen_one(X86_REPNE); break;
358 if (size == OP_SIZE_2)
359 cgen_one(X86_OP_SIZE);
361 need_rex = rex != X86_REX;
362 need_rex |= size == OP_SIZE_1 && ((reg_is_reg && !reg_is_fp(reg) && reg >= 4) || (mod == 0xc0 && !reg_is_fp(arg[0]) && arg[0] >= 4));
363 if (prefix == PREFIX_0F && (opcode == X86_0F_MOVZX_R16_RM8 || opcode == X86_0F_MOVSX_R16_RM8)) {
364 need_rex |= mod == 0xc0 && arg[0] >= 4;
384 internal(file_line, "cgen_rm_insn: invalid prefix %u", prefix);
388 cgen_one(mod | ((reg & 7) << 3) | (rm & 7));
402 static bool attr_w cgen_sse_insn(struct codegen_context *ctx, unsigned sse_prefix, unsigned sse_op_map, uint8_t opcode, bool wide, uint8_t reg, uint8_t reg2, uint8_t *arg)
404 g(cgen_rm_insn(ctx, sse_prefix + (reg2 << 8), sse_op_map, opcode, !wide ? OP_SIZE_4 : OP_SIZE_8, true, reg, arg));
408 static bool attr_w cgen_push(struct codegen_context *ctx)
410 uint8_t *arg1 = ctx->code_position;
411 ctx->code_position += arg_size(*arg1);
412 if (likely(R_IS_GPR(arg1[0]))) {
414 cgen_rex(X86_REX | X86_REX_B);
415 cgen_one(X86_PUSH_R16 + (arg1[0] & 7));
418 if (arg1[0] == ARG_IMM) {
420 imm = get_imm(&arg1[1]);
421 if (unlikely(!imm_is_32bit(imm)))
422 internal(file_line, "cgen_push: immediate out of range: %"PRIxMAX"", (uintmax_t)imm);
423 if (imm >= -0x80 && imm <= 0x7f) {
424 cgen_one(X86_PUSH_IMM8);
428 cgen_one(X86_PUSH_IMM16);
433 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, X86_FF, OP_SIZE_4, false, X86_FF_PUSH, arg1));
437 static bool attr_w cgen_pop(struct codegen_context *ctx)
439 uint8_t *arg1 = ctx->code_position;
440 ctx->code_position += arg_size(*arg1);
441 if (likely(R_IS_GPR(arg1[0]))) {
443 cgen_rex(X86_REX | X86_REX_B);
444 cgen_one(X86_POP_R16 + (arg1[0] & 7));
447 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, X86_8F, OP_SIZE_4, false, X86_8F_POP, arg1));
451 static bool attr_w cgen_mov(struct codegen_context *ctx, unsigned size)
453 uint8_t *arg1 = ctx->code_position;
454 uint8_t *arg2 = arg1 + arg_size(*arg1);
455 ctx->code_position = arg2 + arg_size(*arg2);
456 if (arg2[0] == ARG_IMM) {
459 imm = get_imm(&arg2[1]);
460 if (R_IS_GPR(arg1[0])) {
464 if (imm >= 0 && imm < 0x100000000LL)
469 cgen_one(X86_MOV_R16_IMM16 + (arg1[0] & 7));
473 if (imm >= ~(int64_t)0x7fffffff && imm < 0) {
478 cgen_one(X86_MOV_R16_IMM16 + (arg1[0] & 7));
482 if (size < OP_SIZE_4) {
483 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, size == OP_SIZE_1 ? X86_MOV_RM8_IMM8 : X86_MOV_RM16_IMM16, size, false, X86_MOV_R16_IMM16_REG, arg1));
484 if (size == OP_SIZE_1)
491 if (unlikely(!imm_is_32bit(imm)))
492 internal(file_line, "cgen_mov: immediate out of range: %"PRIxMAX"", (uintmax_t)imm);
493 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, X86_MOV_RM16_IMM16, maximum(size, OP_SIZE_4), false, X86_MOV_R16_IMM16_REG, arg1));
498 if (arg1[0] == R_AX && size >= OP_SIZE_4 && arg2[0] == ARG_ADDRESS_0) {
500 imm = get_imm(&arg2[1]);
501 if (size == OP_SIZE_8)
502 cgen_rex(X86_REX | X86_REX_W);
503 cgen_one(X86_MOV_AX_M16);
507 if (arg1[0] == ARG_ADDRESS_0 && arg2[0] == R_AX) {
508 uint8_t code = size == OP_SIZE_1 ? X86_MOV_M16_AL : X86_MOV_M16_AX;
510 imm = get_imm(&arg1[1]);
511 if (size == OP_SIZE_2)
512 cgen_one(X86_OP_SIZE);
513 if (size == OP_SIZE_8)
514 cgen_rex(X86_REX | X86_REX_W);
519 if (R_IS_XMM(arg1[0]) && ARG_IS_ADDRESS(arg2[0])) {
520 if (size == OP_SIZE_2) {
521 g(cgen_sse_insn(ctx, SSE_PREFIX_66, PREFIX_0F, X86_0F_PINSRW_X128_RM16_IMM8, false, arg1[0], R_XMM7, arg2));
525 if (size == OP_SIZE_16) {
526 g(cgen_sse_insn(ctx, SSE_PREFIX_NONE, PREFIX_0F, X86_0F_MOVAPS_X128_M128, false, arg1[0], 0, arg2));
529 g(cgen_sse_insn(ctx, size == OP_SIZE_4 ? SSE_PREFIX_F3 : SSE_PREFIX_F2, PREFIX_0F, X86_0F_MOVSS_X128_M32, false, arg1[0], 0, arg2));
532 if (ARG_IS_ADDRESS(arg1[0]) && R_IS_XMM(arg2[0])) {
533 if (size == OP_SIZE_2) {
534 g(cgen_sse_insn(ctx, SSE_PREFIX_66, PREFIX_0F_3A, X86_0F_3A_PEXTRW_RM16_X128_IMM8, false, arg2[0], 0, arg1));
538 if (size == OP_SIZE_16) {
539 g(cgen_sse_insn(ctx, SSE_PREFIX_NONE, PREFIX_0F, X86_0F_MOVAPS_M128_X128, false, arg2[0], 0, arg1));
542 g(cgen_sse_insn(ctx, size == OP_SIZE_4 ? SSE_PREFIX_F3 : SSE_PREFIX_F2, PREFIX_0F, X86_0F_MOVSS_M32_X128, false, arg2[0], 0, arg1));
545 if (R_IS_XMM(arg1[0]) && R_IS_XMM(arg2[0])) {
546 g(cgen_sse_insn(ctx, SSE_PREFIX_NONE, PREFIX_0F, X86_0F_MOVAPS_X128_M128, false, arg1[0], 0, arg2));
549 if (R_IS_XMM(arg1[0]) && R_IS_GPR(arg2[0])) {
550 g(cgen_sse_insn(ctx, SSE_PREFIX_66, PREFIX_0F, X86_0F_MOVD_X128_RM32, size == OP_SIZE_8, arg1[0], 0, arg2));
553 if (R_IS_GPR(arg1[0]) && R_IS_XMM(arg2[0])) {
554 g(cgen_sse_insn(ctx, SSE_PREFIX_66, PREFIX_0F, X86_0F_MOVD_RM32_X128, size == OP_SIZE_8, arg2[0], 0, arg1));
557 if (!R_IS_GPR(arg1[0]) && unlikely(!R_IS_GPR(arg2[0]))) {
558 /*debug("%s", da(ctx->fn,function)->function_name);*/
559 internal(file_line, "cgen_mov: two addresses not supported");
561 if (!R_IS_GPR(arg1[0])) {
562 uint8_t code = size == OP_SIZE_1 ? X86_MOV_RM8_R8 : X86_MOV_RM16_R16;
563 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, code, size, true, arg2[0], arg1));
565 } else if (size >= OP_SIZE_4) {
566 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, X86_MOV_R16_RM16, size, true, arg1[0], arg2));
569 uint8_t code = size == OP_SIZE_1 ? X86_0F_MOVZX_R16_RM8 : X86_0F_MOVZX_R16_RM16;
570 g(cgen_rm_insn(ctx, -1, PREFIX_0F, code, OP_SIZE_4, false, arg1[0], arg2));
575 static bool attr_w cgen_movsx(struct codegen_context *ctx, unsigned size)
577 uint8_t *arg1, *arg2;
578 if (unlikely(size == OP_SIZE_NATIVE)) {
579 g(cgen_mov(ctx, size));
582 arg1 = ctx->code_position;
583 arg2 = arg1 + arg_size(*arg1);
584 ctx->code_position = arg2 + arg_size(*arg2);
585 if (size <= OP_SIZE_2) {
586 g(cgen_rm_insn(ctx, -1, PREFIX_0F, size == OP_SIZE_1 ? X86_0F_MOVSX_R16_RM8 : X86_0F_MOVSX_R16_RM16, OP_SIZE_NATIVE, true, arg1[0], arg2));
588 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, X86_MOVSXD, OP_SIZE_NATIVE, true, arg1[0], arg2));
593 static bool attr_w cgen_lea(struct codegen_context *ctx, unsigned size, bool neg)
596 uint8_t *arg1, *arg2, *arg3;
598 arg1 = ctx->code_position;
599 arg2 = arg1 + arg_size(*arg1);
600 arg3 = arg2 + arg_size(*arg2);
601 ctx->code_position = arg3 + arg_size(*arg3);
603 if (arg3[0] == ARG_IMM) {
605 if (arg2[0] == ARG_SHIFTED_REGISTER) {
606 if (unlikely((arg2[1] & ARG_SHIFT_MODE) != ARG_SHIFT_LSL) ||
607 unlikely((arg2[1] & ARG_SHIFT_AMOUNT) > 3))
609 addr[0] = ARG_ADDRESS_1 + (arg2[1] & ARG_SHIFT_AMOUNT);
612 addr[0] = ARG_ADDRESS_1;
615 imm = get_imm(&arg3[1]);
617 imm = -(uint64_t)imm;
619 memcpy(&addr[2], &imm, 8);
620 } else if (R_IS_GPR(arg3[0])) {
623 addr[0] = ARG_ADDRESS_2;
626 memset(&addr[3], 0, 8);
627 } else if (arg3[0] == ARG_SHIFTED_REGISTER) {
630 if (unlikely((arg3[1] & ARG_SHIFT_MODE) != ARG_SHIFT_LSL) ||
631 unlikely((arg3[1] & ARG_SHIFT_AMOUNT) > 3))
633 addr[0] = ARG_ADDRESS_2 + (arg3[1] & ARG_SHIFT_AMOUNT);
636 memset(&addr[3], 0, 8);
639 internal(file_line, "cgen_lea: invalid argument %u, %02x, %02x, %02x, %u", size, arg1[0], arg2[0], arg3[0], (unsigned)neg);
641 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, X86_LEA_R16_RM16, size, true, arg1[0], addr));
645 static bool attr_w cgen_alu(struct codegen_context *ctx, unsigned size, unsigned alu, unsigned writes_flags)
647 uint8_t *arg1, *arg2, *arg3;
649 arg1 = ctx->code_position;
650 arg2 = arg1 + arg_size(*arg1);
651 arg3 = arg2 + arg_size(*arg2);
652 ctx->code_position = arg3 + arg_size(*arg3);
653 if (unlikely(arg_size(*arg1) != arg_size(*arg2)))
654 internal(file_line, "cgen_alu: three-operand mode not supported");
655 if (unlikely(memcmp(arg1, arg2, arg_size(*arg1))))
656 internal(file_line, "cgen_alu: three-operand mode not supported");
658 arg1 = ctx->code_position;
660 arg3 = arg2 + arg_size(*arg2);
661 ctx->code_position = arg3 + arg_size(*arg3);
664 if (unlikely(alu == ALU_MUL)) {
665 if (unlikely(arg3[0] == ARG_IMM)) {
668 imm = get_imm(&arg3[1]);
669 if (unlikely(!imm_is_32bit(imm)))
670 internal(file_line, "cgen_alu: immediate out of range: %"PRIxMAX"", (uintmax_t)imm);
671 code = imm_is_8bit(imm) ? X86_IMUL_R16_RM16_IMM8 : X86_IMUL_R16_RM16_IMM16;
672 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, code, size, true, arg1[0], arg2));
673 if (code == X86_IMUL_R16_RM16_IMM8) {
675 } else if (size == OP_SIZE_2) {
682 if (unlikely(size == OP_SIZE_1)) {
683 if (unlikely(arg1[0] != R_AX))
684 internal(file_line, "cgen_alu: imul with unsupported register");
685 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, X86_F6, size, false, X86_F6_IMUL_RM8, arg3));
688 if (unlikely(!R_IS_GPR(arg1[0])))
689 internal(file_line, "cgen_alu: invalid multiply args");
690 g(cgen_rm_insn(ctx, -1, PREFIX_0F, X86_0F_IMUL_R16_RM16, size, true, arg1[0], arg3));
695 if (arg3[0] == ARG_IMM) {
699 imm = get_imm(&arg3[1]);
700 if (unlikely(!imm_is_32bit(imm)))
701 internal(file_line, "cgen_alu: immediate out of range: %"PRIxMAX"", (uintmax_t)imm);
703 if (!(writes_flags & 2)) {
704 if ((alu == ALU_ADD && imm == 1) || (alu == ALU_SUB && imm == -1)) {
706 if (R_IS_GPR(arg1[0]) && size >= OP_SIZE_2) {
707 if (size == OP_SIZE_2)
708 cgen_one(X86_OP_SIZE);
709 cgen_one(X86_INC_R16 + arg1[0]);
713 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, size == OP_SIZE_1 ? X86_FE : X86_FF, size, false, X86_FE_INC_RM8, arg1));
716 if ((alu == ALU_ADD && imm == -1) || (alu == ALU_SUB && imm == 1)) {
718 if (R_IS_GPR(arg1[0]) && size >= OP_SIZE_2) {
719 if (size == OP_SIZE_2)
720 cgen_one(X86_OP_SIZE);
721 cgen_one(X86_DEC_R16 + arg1[0]);
725 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, size == OP_SIZE_1 ? X86_FE : X86_FF, size, false, X86_FE_DEC_RM8, arg1));
730 if (arg1[0] == R_AX) {
731 if (imm_is_8bit(imm) && size >= OP_SIZE_4)
734 code = size == OP_SIZE_1 ? X86_ALU_AL_IMM8 : X86_ALU_AX_IMM16;
735 if (size == OP_SIZE_2)
736 cgen_one(X86_OP_SIZE);
737 if (size == OP_SIZE_8)
738 cgen_rex(X86_REX | X86_REX_W);
743 bit8 = imm_is_8bit(imm);
744 code = size == OP_SIZE_1 ? X86_ALU_RM8_IMM8 : bit8 ? X86_ALU_RM16_IMM8 : X86_ALU_RM16_IMM16;
745 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, code, size, false, alu, arg1));
747 if (bit8 || size == OP_SIZE_1) {
749 } else if (size == OP_SIZE_2) {
757 if (R_IS_XMM(arg1[0]) && size == OP_SIZE_16) {
760 case ALU_AND: code = X86_0F_ANDPS_X128_M128; break;
761 case ALU_ANDN: code = X86_0F_ANDNPS_X128_M128; break;
762 case ALU_OR: code = X86_0F_ORPS_X128_M128; break;
763 case ALU_XOR: code = X86_0F_XORPS_X128_M128; break;
764 default: internal(file_line, "invalid sse alu: %u", alu);
766 g(cgen_sse_insn(ctx, SSE_PREFIX_NONE, PREFIX_0F, code, false, arg1[0], arg2[0], arg3));
770 if (!R_IS_GPR(arg1[0]) && unlikely(!R_IS_GPR(arg3[0])))
771 internal(file_line, "cgen_alu: two addresses not supported");
773 if (!R_IS_GPR(arg1[0])) {
774 uint8_t code = size == OP_SIZE_1 ? X86_ALU_RM8_R8 : X86_ALU_RM16_R16;
776 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, code, size, true, arg3[0], arg1));
779 uint8_t code = size == OP_SIZE_1 ? X86_ALU_R8_RM8 : X86_ALU_R16_RM16;
781 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, code, size, true, arg1[0], arg3));
786 static bool attr_w cgen_alu1(struct codegen_context *ctx, unsigned size, unsigned alu)
789 uint8_t *arg1 = ctx->code_position;
790 uint8_t *arg2 = arg1 + arg_size(*arg1);
791 ctx->code_position = arg2 + arg_size(*arg2);
792 if (alu == ALU1_NOT || alu == ALU1_NEG || alu == ALU1_BSWAP) {
793 if (unlikely(arg1[0] != arg2[0]))
794 internal(file_line, "cgen_alu1: arguments mismatch: %x, %x", arg1[0], arg2[0]);
798 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, size == OP_SIZE_1 ? X86_F6 : X86_F7, size, false, X86_F6_NOT_RM8, arg1));
801 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, size == OP_SIZE_1 ? X86_F6 : X86_F7, size, false, X86_F6_NEG_RM8, arg1));
804 if (unlikely(size <= OP_SIZE_2))
805 internal(file_line, "cgen_alu1: bytes or words not supported with this operation");
807 if (!R_IS_GPR(arg1[0]))
808 internal(file_line, "cgen_alu1: bswap needs a register");
811 if (size == OP_SIZE_8)
816 cgen_one(X86_0F_BSWAP + (arg1[0] & 7));
822 if (unlikely(size == OP_SIZE_1))
823 internal(file_line, "cgen_alu1: bytes not supported with this operation");
824 if (alu == ALU1_POPCNT || alu == ALU1_LZCNT)
826 g(cgen_rm_insn(ctx, -1, PREFIX_0F, alu == ALU1_BSF ? X86_0F_BSF_R16_RM16 : alu == ALU1_BSR || alu == ALU1_LZCNT ? X86_0F_BSR_R16_RM16 : X86_0F_POPCNT_R16_RM16, size, true, arg1[0], arg2));
829 internal(file_line, "cgen_alu1: invalid operation %u", alu);
834 static bool attr_w cgen_test(struct codegen_context *ctx, unsigned size)
836 uint8_t *arg1, *arg2;
837 arg1 = ctx->code_position;
838 arg2 = arg1 + arg_size(*arg1);
839 ctx->code_position = arg2 + arg_size(*arg2);
841 if (arg2[0] == ARG_IMM) {
843 imm = get_imm(&arg2[1]);
844 if (arg1[0] == R_AX) {
845 if (size == OP_SIZE_1) {
846 cgen_one(X86_TEST_AL_IMM8);
847 } else if (size == OP_SIZE_2) {
848 cgen_one(X86_OP_SIZE);
849 cgen_one(X86_TEST_AX_IMM16);
850 } else if (size == OP_SIZE_4) {
851 cgen_one(X86_TEST_AX_IMM16);
853 if (unlikely(!imm_is_32bit(imm)))
854 internal(file_line, "cgen_Test: immediate out of range: %"PRIxMAX"", (uintmax_t)imm);
855 cgen_rex(X86_REX | X86_REX_W);
856 cgen_one(X86_TEST_AX_IMM16);
859 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, size == OP_SIZE_1 ? X86_F6 : X86_F7, size, false, X86_F6_TEST_RM8_IMM8, arg1));
861 if (size == OP_SIZE_1) {
863 } else if (size == OP_SIZE_2) {
865 } else if (size == OP_SIZE_4) {
868 if (unlikely(!imm_is_32bit(imm)))
869 internal(file_line, "cgen_Test: immediate out of range: %"PRIxMAX"", (uintmax_t)imm);
875 if (!R_IS_GPR(arg1[0]) && unlikely(!R_IS_GPR(arg2[0])))
876 internal(file_line, "cgen_test: two addresses not supported");
878 if (!R_IS_GPR(arg1[0])) {
879 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, size == OP_SIZE_1 ? X86_TEST_RM8_R8 : X86_TEST_RM16_R16, size, true, arg2[0], arg1));
881 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, size == OP_SIZE_1 ? X86_TEST_RM8_R8 : X86_TEST_RM16_R16, size, true, arg1[0], arg2));
886 static bool attr_w cgen_lea3(struct codegen_context *ctx, unsigned size, unsigned shift)
889 uint8_t *arg1, *arg2, *arg3, *arg4;
891 arg1 = ctx->code_position;
892 arg2 = arg1 + arg_size(*arg1);
893 arg3 = arg2 + arg_size(*arg2);
894 arg4 = arg3 + arg_size(*arg3);
895 ctx->code_position = arg4 + arg_size(*arg4);
897 if (unlikely(!R_IS_GPR(arg1[0])) || unlikely(!R_IS_GPR(arg2[0])) || unlikely(!R_IS_GPR(arg3[0])) || unlikely(arg4[0] != ARG_IMM))
898 internal(file_line, "cgen_lea3: invalid arguments");
900 addr[0] = ARG_ADDRESS_2 + shift;
903 memcpy(&addr[3], &arg4[1], 8);
905 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, X86_LEA_R16_RM16, size, true, arg1[0], addr));
910 static bool attr_w cgen_rot(struct codegen_context *ctx, unsigned size, uint8_t rot, unsigned writes_flags)
912 uint8_t *arg1 = ctx->code_position;
913 uint8_t *arg2 = arg1 + arg_size(*arg1);
914 uint8_t *arg3 = arg2 + arg_size(*arg2);
915 ctx->code_position = arg3 + arg_size(*arg3);
917 if (cpu_test_feature(CPU_FEATURE_bmi2) && size >= OP_SIZE_4 && arg3[0] != ARG_IMM && !writes_flags && (rot == ROT_SHL || rot == ROT_SHR || rot == ROT_SAR)) {
920 case ROT_SHL: sse_prefix = SSE_PREFIX_66; break;
921 case ROT_SAR: sse_prefix = SSE_PREFIX_F3; break;
922 case ROT_SHR: sse_prefix = SSE_PREFIX_F2; break;
923 default: internal(file_line, "cgen_rot: invalid rotation %x", rot);
925 g(cgen_sse_insn(ctx, sse_prefix + force_vex, PREFIX_0F_38, X86_0F_38_ROTX, size == OP_SIZE_8, arg1[0], arg3[0], arg2));
929 if (arg1[0] != arg2[0])
930 internal(file_line, "cgen_rot: invalid arguments: %x, %02x, %02x, %02x", rot, arg1[0], arg2[0], arg3[0]);
932 if (arg3[0] == R_CX) {
933 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, size == OP_SIZE_1 ? X86_ROT_RM8_CL : X86_ROT_RM16_CL, size, false, rot, arg1));
934 } else if (likely(arg3[0] == ARG_IMM)) {
936 imm = get_imm(&arg3[1]);
938 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, size == OP_SIZE_1 ? X86_ROT_RM8_1 : X86_ROT_RM16_1, size, false, rot, arg1));
940 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, size == OP_SIZE_1 ? X86_ROT_RM8_IMM8 : X86_ROT_RM16_IMM8, size, false, rot, arg1));
944 internal(file_line, "cgen_rot: invalid argument %02x", arg3[0]);
949 static bool attr_w cgen_btxt(struct codegen_context *ctx, unsigned size, uint8_t bt, uint8_t *arg1, uint8_t *arg2)
951 if (arg2[0] == ARG_IMM) {
952 g(cgen_rm_insn(ctx, -1, PREFIX_0F, X86_0F_BTX_RM16_IMM8, size, false, X86_0F_BTX_BT_RM16_IMM8 + bt, arg1));
955 g(cgen_rm_insn(ctx, -1, PREFIX_0F, X86_0F_BT_RM16_R16 + bt * 8, size, true, arg2[0], arg1));
960 static bool attr_w cgen_bt(struct codegen_context *ctx, unsigned size)
962 uint8_t *arg1 = ctx->code_position;
963 uint8_t *arg2 = arg1 + arg_size(*arg1);
964 ctx->code_position = arg2 + arg_size(*arg2);
966 return cgen_btxt(ctx, size, BTX_BT, arg1, arg2);
969 static bool attr_w cgen_btx(struct codegen_context *ctx, unsigned size, uint8_t bt)
971 uint8_t *arg1 = ctx->code_position;
972 uint8_t *arg2 = arg1 + arg_size(*arg1);
973 uint8_t *arg3 = arg2 + arg_size(*arg2);
974 ctx->code_position = arg3 + arg_size(*arg3);
976 if (arg1[0] != arg2[0])
977 internal(file_line, "cgen_btx: invalid arguments");
979 return cgen_btxt(ctx, size, bt, arg1, arg3);
982 static bool attr_w cgen_mul_l(struct codegen_context *ctx, unsigned size, bool sgn)
984 uint8_t *arg1, *arg2, *arg3, *arg4;
986 arg1 = ctx->code_position;
987 arg2 = arg1 + arg_size(*arg1);
988 arg3 = arg2 + arg_size(*arg2);
989 arg4 = arg3 + arg_size(*arg3);
990 ctx->code_position = arg4 + arg_size(*arg4);
991 reg_up = size == OP_SIZE_1 ? R_AX : R_DX;
992 if (unlikely(arg1[0] != R_AX) || unlikely(arg2[0] != reg_up) || unlikely(arg3[0] != R_AX) || unlikely(arg4[0] == ARG_IMM))
993 internal(file_line, "cgen_mul_l: invalid mul arguments");
995 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, size == OP_SIZE_1 ? X86_F6 : X86_F7, size, false, !sgn ? X86_F6_MUL_RM8 : X86_F6_IMUL_RM8, arg4));
999 static bool attr_w cgen_div_l(struct codegen_context *ctx, unsigned size, bool sgn)
1001 uint8_t *arg1, *arg2, *arg3, *arg4, *arg5;
1003 arg1 = ctx->code_position;
1004 arg2 = arg1 + arg_size(*arg1);
1005 arg3 = arg2 + arg_size(*arg2);
1006 arg4 = arg3 + arg_size(*arg3);
1007 arg5 = arg4 + arg_size(*arg4);
1008 ctx->code_position = arg5 + arg_size(*arg5);
1009 reg_up = size == OP_SIZE_1 ? R_AX : R_DX;
1010 if (unlikely(arg1[0] != R_AX) || unlikely(arg2[0] != reg_up) || unlikely(arg3[0] != R_AX) || unlikely(arg4[0] != reg_up) || unlikely(arg5[0] == ARG_IMM))
1011 internal(file_line, "cgen_div_l: invalid div arguments");
1013 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, size == OP_SIZE_1 ? X86_F6 : X86_F7, size, false, !sgn ? X86_F6_DIV_RM8 : X86_F6_IDIV_RM8, arg5));
1017 static bool attr_w cgen_cmov(struct codegen_context *ctx, unsigned size, unsigned cond)
1019 uint8_t *arg1 = ctx->code_position;
1020 uint8_t *arg2 = arg1 + arg_size(*arg1);
1021 uint8_t *arg3 = arg2 + arg_size(*arg2);
1022 ctx->code_position = arg3 + arg_size(*arg3);
1023 if (unlikely(arg1[0] != arg2[0]))
1024 internal(file_line, "cgen_cmov: invalid arguments");
1025 g(cgen_rm_insn(ctx, -1, PREFIX_0F, X86_0F_CMOVCC_R16_RM16 + cond, size, true, arg1[0], arg3));
1029 static bool attr_w cgen_memcpy(struct codegen_context *ctx)
1031 int64_t disp_dest, disp_src;
1032 uint8_t *arg1, *arg2, *arg3;
1033 arg1 = ctx->code_position;
1034 arg2 = arg1 + arg_size(*arg1);
1035 arg3 = arg2 + arg_size(*arg2);
1036 ctx->code_position = arg3 + arg_size(*arg3);
1037 if (unlikely(arg1[0] != ARG_ADDRESS_1_POST_I) || unlikely(arg2[0] != ARG_ADDRESS_1_POST_I) || unlikely(arg3[0] != R_CX))
1039 if (unlikely(arg1[1] != R_DI) || unlikely(arg2[1] != R_SI))
1041 disp_dest = get_imm(&arg1[2]);
1042 disp_src = get_imm(&arg2[2]);
1043 if (unlikely(disp_dest != 0) || unlikely(disp_src != 0))
1047 cgen_one(X86_MOVSB);
1051 internal(file_line, "cgen_memcpy: invalid arguments %02x, %02x, %02x", *arg1, *arg2, *arg3);
1055 static bool attr_w cgen_memset(struct codegen_context *ctx)
1058 uint8_t *arg1, *arg2, *arg3;
1059 arg1 = ctx->code_position;
1060 arg2 = arg1 + arg_size(*arg1);
1061 arg3 = arg2 + arg_size(*arg2);
1062 ctx->code_position = arg3 + arg_size(*arg3);
1063 if (unlikely(arg1[0] != ARG_ADDRESS_1_POST_I) || unlikely(arg2[0] != R_CX) || unlikely(arg3[0] != R_AX))
1065 if (unlikely(arg1[1] != R_DI))
1067 disp_dest = get_imm(&arg1[2]);
1068 if (unlikely(disp_dest != 0))
1072 cgen_one(X86_STOSB);
1076 internal(file_line, "cgen_memset: invalid arguments %02x, %02x, %02x", *arg1, *arg2, *arg3);
1080 static bool attr_w cgen_sse_cmp(struct codegen_context *ctx, unsigned size)
1082 uint8_t *arg1 = ctx->code_position;
1083 uint8_t *arg2 = arg1 + arg_size(*arg1);
1084 ctx->code_position = arg2 + arg_size(*arg2);
1085 g(cgen_sse_insn(ctx, size == OP_SIZE_4 ? SSE_PREFIX_NONE: SSE_PREFIX_66, PREFIX_0F, X86_0F_UCOMISS_X128_RM32, false, arg1[0], 0, arg2));
1089 static bool attr_w cgen_sse_alu(struct codegen_context *ctx, unsigned size, unsigned alu)
1092 uint8_t *arg1 = ctx->code_position;
1093 uint8_t *arg2 = arg1 + arg_size(*arg1);
1094 uint8_t *arg3 = arg2 + arg_size(*arg2);
1095 ctx->code_position = arg3 + arg_size(*arg3);
1097 case FP_ALU_ADD: opcode = X86_0F_ADDPS_X128_M32; break;
1098 case FP_ALU_SUB: opcode = X86_0F_SUBPS_X128_M32; break;
1099 case FP_ALU_MUL: opcode = X86_0F_MULPS_X128_M32; break;
1100 case FP_ALU_DIV: opcode = X86_0F_DIVPS_X128_M32; break;
1101 default: internal(file_line, "cgen_sse_alu: invalid alu %u", alu);
1103 g(cgen_sse_insn(ctx, size == OP_SIZE_4 ? SSE_PREFIX_F3 : SSE_PREFIX_F2, PREFIX_0F, opcode, false, arg1[0], arg2[0], arg3));
1107 static bool attr_w cgen_sse_alu1(struct codegen_context *ctx, unsigned size, unsigned alu)
1110 unsigned sse_pfx, sse_op_map;
1111 uint8_t *arg1 = ctx->code_position;
1112 uint8_t *arg2 = arg1 + arg_size(*arg1);
1113 ctx->code_position = arg2 + arg_size(*arg2);
1115 case FP_ALU1_SQRT: if (size == OP_SIZE_4) {
1116 sse_pfx = SSE_PREFIX_F3;
1117 } else if (size == OP_SIZE_8) {
1118 sse_pfx = SSE_PREFIX_F2;
1122 sse_op_map = PREFIX_0F;
1123 opcode = X86_0F_SQRTPS_X128_M32;
1128 case FP_ALU1_TRUNC: sse_pfx = SSE_PREFIX_66;
1129 sse_op_map = PREFIX_0F_3A;
1130 if (size == OP_SIZE_4) {
1131 opcode = X86_0F_3A_ROUNDSS_X128_M32;
1132 } else if (size == OP_SIZE_8) {
1133 opcode = X86_0F_3A_ROUNDSD_X128_M64;
1139 default: internal(file_line, "cgen_sse_alu1: invalid alu %u, %u", alu, size);
1141 g(cgen_sse_insn(ctx, sse_pfx, sse_op_map, opcode, false, arg1[0], arg1[0], arg2));
1142 if (OP_IS_ROUND(alu))
1143 cgen_one(alu - FP_ALU1_ROUND);
1147 static bool attr_w cgen_sse_from_int(struct codegen_context *ctx, unsigned int_op_size, unsigned fp_op_size)
1149 uint8_t *arg1 = ctx->code_position;
1150 uint8_t *arg2 = arg1 + arg_size(*arg1);
1151 ctx->code_position = arg2 + arg_size(*arg2);
1152 g(cgen_sse_insn(ctx, fp_op_size == OP_SIZE_4 ? SSE_PREFIX_F3 : SSE_PREFIX_F2, PREFIX_0F, X86_0F_CVTSI2SS_X128_RM32, int_op_size == OP_SIZE_8, arg1[0], R_XMM7, arg2));
1156 static bool attr_w cgen_sse_to_int(struct codegen_context *ctx, unsigned int_op_size, unsigned fp_op_size)
1158 uint8_t *arg1 = ctx->code_position;
1159 uint8_t *arg2 = arg1 + arg_size(*arg1);
1160 ctx->code_position = arg2 + arg_size(*arg2);
1161 g(cgen_sse_insn(ctx, fp_op_size == OP_SIZE_4 ? SSE_PREFIX_F3 : SSE_PREFIX_F2, PREFIX_0F, X86_0F_CVTTSS2SI_X128_RM32, int_op_size == OP_SIZE_8, arg1[0], 0, arg2));
1165 static bool attr_w cgen_sse_cvt(struct codegen_context *ctx, unsigned from_op_size, unsigned to_op_size)
1167 uint8_t *arg1 = ctx->code_position;
1168 uint8_t *arg2 = arg1 + arg_size(*arg1);
1169 ctx->code_position = arg2 + arg_size(*arg2);
1170 if (from_op_size == OP_SIZE_2 && to_op_size == OP_SIZE_4) {
1171 g(cgen_sse_insn(ctx, SSE_PREFIX_66, PREFIX_0F_38, X86_0F_38_CVTPH2PS_X128_RM64, false, arg1[0], 0, arg2));
1173 } else if (from_op_size == OP_SIZE_4 && to_op_size == OP_SIZE_2) {
1174 g(cgen_sse_insn(ctx, SSE_PREFIX_66, PREFIX_0F_3A, X86_0F_3A_CVTPS2PH_RM64_X128, false, arg2[0], 0, arg1));
1178 internal(file_line, "cgen_sse_cvt: unsupported arguments %u, %u", from_op_size, to_op_size);
1182 static bool attr_w cgen_x87_fld(struct codegen_context *ctx, unsigned size)
1185 uint8_t *arg1 = ctx->code_position;
1186 ctx->code_position = arg1 + arg_size(*arg1);
1187 if (arg1[0] >= R_ST0 && arg1[0] <= R_ST7)
1191 c1 = X87_FLD_RM32; c2 = X87_FLD_RM32_X; break;
1193 c1 = X87_FLD_M64; c2 = X87_FLD_M64_X; break;
1195 c1 = X87_FLD_M80; c2 = X87_FLD_M80_X; break;
1197 internal(file_line, "cgen_x87_fld: invalid size %u", size);
1199 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, c1, OP_SIZE_4, false, c2, arg1));
1203 static bool attr_w cgen_x87_fild(struct codegen_context *ctx, unsigned size)
1206 uint8_t *arg1 = ctx->code_position;
1207 ctx->code_position = arg1 + arg_size(*arg1);
1210 c1 = X87_FILD_M16; c2 = X87_FILD_M16_X; break;
1212 c1 = X87_FILD_M32; c2 = X87_FILD_M32_X; break;
1214 c1 = X87_FILD_M64; c2 = X87_FILD_M64_X; break;
1216 internal(file_line, "cgen_x87_fild: invalid size %u", size);
1218 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, c1, OP_SIZE_4, false, c2, arg1));
1222 static bool attr_w cgen_x87_fstp(struct codegen_context *ctx, unsigned size)
1225 uint8_t *arg1 = ctx->code_position;
1226 ctx->code_position = arg1 + arg_size(*arg1);
1227 if (arg1[0] >= R_ST0 && arg1[0] <= R_ST7)
1231 c1 = X87_FSTP_M32; c2 = X87_FSTP_M32_X; break;
1233 c1 = X87_FSTP_RM64; c2 = X87_FSTP_RM64_X; break;
1235 c1 = X87_FSTP_M80; c2 = X87_FSTP_M80_X; break;
1237 internal(file_line, "cgen_x87_fstp: invalid size %u", size);
1239 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, c1, OP_SIZE_4, false, c2, arg1));
1243 static bool attr_w cgen_x87_fistp(struct codegen_context *ctx, unsigned size)
1246 uint8_t *arg1 = ctx->code_position;
1247 ctx->code_position = arg1 + arg_size(*arg1);
1250 c1 = X87_FISTP_M16; c2 = X87_FISTP_M16_X; break;
1252 c1 = X87_FISTP_M32; c2 = X87_FISTP_M32_X; break;
1254 c1 = X87_FISTP_M64; c2 = X87_FISTP_M64_X; break;
1256 internal(file_line, "cgen_x87_fistp: invalid size %u", size);
1258 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, c1, OP_SIZE_4, false, c2, arg1));
1262 static bool attr_w cgen_x87_fisttp(struct codegen_context *ctx, unsigned size)
1265 uint8_t *arg1 = ctx->code_position;
1266 ctx->code_position = arg1 + arg_size(*arg1);
1269 c1 = X87_FISTTP_M16; c2 = X87_FISTTP_M16_X; break;
1271 c1 = X87_FISTTP_M32; c2 = X87_FISTTP_M32_X; break;
1273 c1 = X87_FISTTP_M64; c2 = X87_FISTTP_M64_X; break;
1275 internal(file_line, "cgen_x87_fisttp: invalid size %u", size);
1277 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, c1, OP_SIZE_4, false, c2, arg1));
1281 static bool attr_w cgen_x87_fcomp(struct codegen_context *ctx, unsigned size)
1284 uint8_t *arg1 = ctx->code_position;
1285 ctx->code_position = arg1 + arg_size(*arg1);
1286 if (arg1[0] < ARG_REGS_MAX) {
1287 c1 = X87_FALU_ST_RM32;
1288 } else switch (size) {
1290 c1 = X87_FALU_ST_RM32; break;
1292 c1 = X87_FALU_ST_M64; break;
1294 internal(file_line, "cgen_x87_fcomp: invalid size %u", size);
1297 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, c1, OP_SIZE_4, false, c2, arg1));
1301 static bool attr_w cgen_x87_alu(struct codegen_context *ctx, unsigned size, unsigned aux)
1304 uint8_t *arg1 = ctx->code_position;
1305 ctx->code_position = arg1 + arg_size(*arg1);
1306 if (arg1[0] < ARG_REGS_MAX) {
1307 c1 = X87_FALU_ST_RM32;
1308 } else switch (size) {
1310 c1 = X87_FALU_ST_RM32; break;
1312 c1 = X87_FALU_ST_M64; break;
1314 internal(file_line, "cgen_x87_alu: invalid size %u", size);
1318 c2 = X87_ALU_ADD; break;
1320 c2 = X87_ALU_SUB; break;
1322 c2 = X87_ALU_MUL; break;
1324 c2 = X87_ALU_DIV; break;
1326 internal(file_line, "cgen_x87_fst: invalid operation %u", aux);
1328 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, c1, OP_SIZE_4, false, c2, arg1));
1332 static bool attr_w cgen_x87_alup(struct codegen_context *ctx, unsigned aux)
1335 uint8_t *arg1 = ctx->code_position;
1336 ctx->code_position = arg1 + arg_size(*arg1);
1339 c2 = X87_ALU_ADD; break;
1341 c2 = X87_ALU_SUB; break;
1343 c2 = X87_ALU_MUL; break;
1345 c2 = X87_ALU_DIV; break;
1347 internal(file_line, "cgen_x87_fstp: invalid operation %u", aux);
1349 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, X87_FALUP_STi_ST0, OP_SIZE_4, false, c2, arg1));
1353 static bool attr_w resolve_relocation(struct codegen_context *ctx, struct relocation *reloc)
1355 int64_t offs = (int64_t)ctx->label_to_pos[reloc->label_id] - (int64_t)(reloc->position + (reloc->length == JMP_SHORT ? 1 : 4));
1356 switch (reloc->length) {
1359 if (!imm_is_8bit(offs))
1362 memcpy(ctx->mcode + reloc->position, &i8, 1);
1367 if (!imm_is_32bit(offs))
1370 memcpy(ctx->mcode + reloc->position, &i32, 4);
1374 internal(file_line, "resolve_relocation: invalid relocation length %u", reloc->length);
1380 static bool attr_w cgen_insn(struct codegen_context *ctx, uint32_t insn)
1384 /*debug("insn: %08x", insn);*/
1385 switch (insn_opcode(insn)) {
1396 imm16 = cget_two(ctx);
1397 cgen_one(X86_RET_IMM16);
1406 case INSN_CALL_INDIRECT:
1407 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, X86_FF, OP_SIZE_4, false, X86_FF_CALL_INDIRECT, ctx->code_position));
1408 ctx->code_position += arg_size(*ctx->code_position);
1411 g(cgen_mov(ctx, insn_op_size(insn)));
1414 g(cgen_movsx(ctx, insn_op_size(insn)));
1417 g(cgen_alu(ctx, insn_op_size(insn), 7, insn_writes_flags(insn)));
1420 g(cgen_test(ctx, insn_op_size(insn)));
1423 case INSN_ALU_FLAGS:
1424 if (unlikely(insn_op_size(insn) < OP_SIZE_4))
1426 if (!insn_writes_flags(insn) && insn_op_size(insn) <= OP_SIZE_8) {
1427 if (unlikely(insn_aux(insn) != ALU_ADD) && unlikely(insn_aux(insn) != ALU_SUB))
1429 g(cgen_lea(ctx, insn_op_size(insn), insn_aux(insn) == ALU_SUB));
1432 g(cgen_alu(ctx, insn_op_size(insn), insn_aux(insn), insn_writes_flags(insn)));
1434 case INSN_ALU_PARTIAL:
1435 case INSN_ALU_FLAGS_PARTIAL:
1436 if (unlikely(insn_op_size(insn) >= OP_SIZE_4))
1438 g(cgen_alu(ctx, insn_op_size(insn), insn_aux(insn), insn_writes_flags(insn)));
1441 case INSN_ALU1_FLAGS:
1442 if (unlikely(insn_op_size(insn) < OP_SIZE_4))
1444 g(cgen_alu1(ctx, insn_op_size(insn), insn_aux(insn)));
1446 case INSN_ALU1_PARTIAL:
1447 case INSN_ALU1_FLAGS_PARTIAL:
1448 if (unlikely(insn_op_size(insn) >= OP_SIZE_4))
1450 g(cgen_alu1(ctx, insn_op_size(insn), insn_aux(insn)));
1453 if (unlikely(insn_op_size(insn) < OP_SIZE_4))
1455 g(cgen_lea3(ctx, insn_op_size(insn), insn_aux(insn)));
1458 if (unlikely(insn_op_size(insn) < OP_SIZE_4))
1460 g(cgen_rot(ctx, insn_op_size(insn), insn_aux(insn), insn_writes_flags(insn)));
1462 case INSN_ROT_PARTIAL:
1463 if (unlikely(insn_op_size(insn) >= OP_SIZE_4))
1465 g(cgen_rot(ctx, insn_op_size(insn), insn_aux(insn), insn_writes_flags(insn)));
1468 if (unlikely(insn_op_size(insn) == OP_SIZE_1) || unlikely(!insn_writes_flags(insn)))
1470 g(cgen_bt(ctx, insn_op_size(insn)));
1473 if (unlikely(insn_op_size(insn) == OP_SIZE_1) || unlikely(!insn_writes_flags(insn)))
1475 g(cgen_btx(ctx, insn_op_size(insn), insn_aux(insn)));
1478 g(cgen_mul_l(ctx, insn_op_size(insn), insn_aux(insn)));
1481 g(cgen_div_l(ctx, insn_op_size(insn), insn_aux(insn)));
1484 if (unlikely(insn_op_size(insn) <= OP_SIZE_2))
1486 if (insn_op_size(insn) == OP_SIZE_8)
1487 cgen_rex(X86_REX | X86_REX_W);
1488 if (unlikely(cget_one(ctx) != R_AX))
1490 if (unlikely(cget_one(ctx) != R_AX))
1494 case INSN_CBW_PARTIAL:
1495 if (unlikely(insn_op_size(insn) != OP_SIZE_2))
1497 if (unlikely(cget_one(ctx) != R_AX))
1499 if (unlikely(cget_one(ctx) != R_AX))
1501 cgen_one(X86_OP_SIZE);
1505 if (unlikely(insn_op_size(insn) <= OP_SIZE_2))
1507 if (unlikely(cget_one(ctx) != R_DX))
1509 if (unlikely(cget_one(ctx) != R_AX))
1511 if (insn_op_size(insn) == OP_SIZE_8)
1512 cgen_rex(X86_REX | X86_REX_W);
1515 case INSN_CWD_PARTIAL:
1516 if (unlikely(insn_op_size(insn) != OP_SIZE_2))
1518 if (unlikely(cget_one(ctx) != R_DX))
1520 if (unlikely(cget_one(ctx) != R_AX))
1522 if (unlikely(cget_one(ctx) != R_DX))
1524 cgen_one(X86_OP_SIZE);
1528 if (unlikely(insn_op_size(insn) != OP_SIZE_1))
1530 g(cgen_rm_insn(ctx, -1, PREFIX_0F, X86_0F_SETCC_RM8 + (insn_aux(insn) & 0xf), OP_SIZE_1, false, 0, ctx->code_position));
1531 ctx->code_position += arg_size(*ctx->code_position);
1533 case INSN_SET_COND_PARTIAL:
1534 if (unlikely(insn_op_size(insn) != OP_SIZE_1))
1536 g(cgen_rm_insn(ctx, -1, PREFIX_0F, X86_0F_SETCC_RM8 + (insn_aux(insn) & 0xf), OP_SIZE_1, false, 0, ctx->code_position));
1537 ctx->code_position += arg_size(*ctx->code_position);
1538 ctx->code_position += arg_size(*ctx->code_position);
1542 if (unlikely(insn_op_size(insn) == OP_SIZE_1))
1544 g(cgen_cmov(ctx, insn_op_size(insn), insn_aux(insn)));
1547 g(cgen_memcpy(ctx));
1550 g(cgen_memset(ctx));
1553 g(cgen_sse_cmp(ctx, insn_op_size(insn)));
1556 g(cgen_sse_alu(ctx, insn_op_size(insn), insn_aux(insn)));
1559 g(cgen_sse_alu1(ctx, insn_op_size(insn), insn_aux(insn)));
1561 case INSN_FP_FROM_INT32:
1562 case INSN_FP_FROM_INT64:
1563 g(cgen_sse_from_int(ctx, insn_opcode(insn) == INSN_FP_FROM_INT32 ? OP_SIZE_4 : OP_SIZE_8, insn_op_size(insn)));
1565 case INSN_FP_TO_INT32:
1566 case INSN_FP_TO_INT64:
1567 g(cgen_sse_to_int(ctx, insn_opcode(insn) == INSN_FP_TO_INT32 ? OP_SIZE_4 : OP_SIZE_8, insn_op_size(insn)));
1570 g(cgen_sse_cvt(ctx, insn_op_size(insn), insn_aux(insn)));
1573 g(cgen_x87_fld(ctx, insn_op_size(insn)));
1576 g(cgen_x87_fild(ctx, insn_op_size(insn)));
1579 g(cgen_x87_fstp(ctx, insn_op_size(insn)));
1581 case INSN_X87_FISTP:
1582 g(cgen_x87_fistp(ctx, insn_op_size(insn)));
1584 case INSN_X87_FISTTP:
1585 g(cgen_x87_fisttp(ctx, insn_op_size(insn)));
1587 case INSN_X87_FCOMP:
1588 g(cgen_x87_fcomp(ctx, insn_op_size(insn)));
1590 case INSN_X87_FCOMPP:
1591 cgen_one(X87_FCOMPP);
1592 cgen_one(X87_FCOMPP_2);
1594 case INSN_X87_FCOMIP:
1595 imm8 = cget_one(ctx);
1596 cgen_one(X87_FCOMIP);
1597 cgen_one(X87_FCOMIP_2 + (imm8 & 7));
1600 g(cgen_x87_alu(ctx, insn_op_size(insn), insn_aux(insn)));
1603 g(cgen_x87_alup(ctx, insn_aux(insn)));
1607 cgen_one(X87_FCHS_2);
1609 case INSN_X87_FSQRT:
1610 cgen_one(X87_FSQRT);
1611 cgen_one(X87_FSQRT_2);
1613 case INSN_X87_FRNDINT:
1614 cgen_one(X87_FRNDINT);
1615 cgen_one(X87_FRNDINT_2);
1617 case INSN_X87_FNSTSW:
1618 if (unlikely(cget_one(ctx) != R_AX))
1620 if (unlikely(cget_one(ctx) != R_AX))
1622 cgen_one(X87_FNSTSW);
1623 cgen_one(X87_FNSTSW_2);
1625 case INSN_X87_FLDCW:
1626 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, X87_FLDCW, OP_SIZE_4, false, X87_FLDCW_X, ctx->code_position));
1627 ctx->code_position += arg_size(*ctx->code_position);
1630 if (insn_jump_size(insn) == JMP_SHORT || insn_jump_size(insn) == JMP_SHORTEST) {
1631 cgen_one(X86_JMP_8);
1632 g(add_relocation(ctx, JMP_SHORT, 0, NULL));
1634 } else if (likely(insn_jump_size(insn) == JMP_LONG)) {
1635 cgen_one(X86_JMP_16);
1636 g(add_relocation(ctx, JMP_LONG, 0, NULL));
1643 if (insn_jump_size(insn) == JMP_SHORT || insn_jump_size(insn) == JMP_SHORTEST) {
1644 cgen_one(X86_JCC_8 + (insn_aux(insn) & 0xf));
1645 g(add_relocation(ctx, JMP_SHORT, 0, NULL));
1647 } else if (likely(insn_jump_size(insn) == JMP_LONG)) {
1649 cgen_one(X86_0F_JCC_16 + (insn_aux(insn) & 0xf));
1650 g(add_relocation(ctx, JMP_LONG, 0, NULL));
1656 case INSN_JMP_INDIRECT:
1657 g(cgen_rm_insn(ctx, -1, PREFIX_NONE, X86_FF, OP_SIZE_4, false, X86_FF_JMP_INDIRECT, ctx->code_position));
1658 ctx->code_position += arg_size(*ctx->code_position);
1662 internal(file_line, "cgen_insn: invalid insn %08lx", (unsigned long)insn);