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c896fe29 FB |
1 | /* |
2 | * Tiny Code Generator for QEMU | |
3 | * | |
4 | * Copyright (c) 2008 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
d4a9eb1f BS |
24 | |
25 | #ifndef NDEBUG | |
26 | static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { | |
c896fe29 FB |
27 | "%eax", |
28 | "%ecx", | |
29 | "%edx", | |
30 | "%ebx", | |
31 | "%esp", | |
32 | "%ebp", | |
33 | "%esi", | |
34 | "%edi", | |
35 | }; | |
d4a9eb1f | 36 | #endif |
c896fe29 | 37 | |
d4a9eb1f | 38 | static const int tcg_target_reg_alloc_order[] = { |
c896fe29 FB |
39 | TCG_REG_EBX, |
40 | TCG_REG_ESI, | |
41 | TCG_REG_EDI, | |
42 | TCG_REG_EBP, | |
6648e296 RH |
43 | TCG_REG_ECX, |
44 | TCG_REG_EDX, | |
45 | TCG_REG_EAX, | |
c896fe29 FB |
46 | }; |
47 | ||
d4a9eb1f BS |
48 | static const int tcg_target_call_iarg_regs[3] = { TCG_REG_EAX, TCG_REG_EDX, TCG_REG_ECX }; |
49 | static const int tcg_target_call_oarg_regs[2] = { TCG_REG_EAX, TCG_REG_EDX }; | |
c896fe29 | 50 | |
b03cce8e FB |
51 | static uint8_t *tb_ret_addr; |
52 | ||
c896fe29 | 53 | static void patch_reloc(uint8_t *code_ptr, int type, |
f54b3f92 | 54 | tcg_target_long value, tcg_target_long addend) |
c896fe29 | 55 | { |
f54b3f92 | 56 | value += addend; |
c896fe29 FB |
57 | switch(type) { |
58 | case R_386_32: | |
59 | *(uint32_t *)code_ptr = value; | |
60 | break; | |
61 | case R_386_PC32: | |
62 | *(uint32_t *)code_ptr = value - (long)code_ptr; | |
63 | break; | |
f75b56c1 RH |
64 | case R_386_PC8: |
65 | value -= (long)code_ptr; | |
66 | if (value != (int8_t)value) { | |
67 | tcg_abort(); | |
68 | } | |
69 | *(uint8_t *)code_ptr = value; | |
70 | break; | |
c896fe29 FB |
71 | default: |
72 | tcg_abort(); | |
73 | } | |
74 | } | |
75 | ||
76 | /* maximum number of register used for input function arguments */ | |
77 | static inline int tcg_target_get_call_iarg_regs_count(int flags) | |
78 | { | |
79 | flags &= TCG_CALL_TYPE_MASK; | |
80 | switch(flags) { | |
81 | case TCG_CALL_TYPE_STD: | |
82 | return 0; | |
83 | case TCG_CALL_TYPE_REGPARM_1: | |
84 | case TCG_CALL_TYPE_REGPARM_2: | |
85 | case TCG_CALL_TYPE_REGPARM: | |
86 | return flags - TCG_CALL_TYPE_REGPARM_1 + 1; | |
87 | default: | |
88 | tcg_abort(); | |
89 | } | |
90 | } | |
91 | ||
92 | /* parse target specific constraints */ | |
d4a9eb1f | 93 | static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str) |
c896fe29 FB |
94 | { |
95 | const char *ct_str; | |
96 | ||
97 | ct_str = *pct_str; | |
98 | switch(ct_str[0]) { | |
99 | case 'a': | |
100 | ct->ct |= TCG_CT_REG; | |
101 | tcg_regset_set_reg(ct->u.regs, TCG_REG_EAX); | |
102 | break; | |
103 | case 'b': | |
104 | ct->ct |= TCG_CT_REG; | |
105 | tcg_regset_set_reg(ct->u.regs, TCG_REG_EBX); | |
106 | break; | |
107 | case 'c': | |
108 | ct->ct |= TCG_CT_REG; | |
109 | tcg_regset_set_reg(ct->u.regs, TCG_REG_ECX); | |
110 | break; | |
111 | case 'd': | |
112 | ct->ct |= TCG_CT_REG; | |
113 | tcg_regset_set_reg(ct->u.regs, TCG_REG_EDX); | |
114 | break; | |
115 | case 'S': | |
116 | ct->ct |= TCG_CT_REG; | |
117 | tcg_regset_set_reg(ct->u.regs, TCG_REG_ESI); | |
118 | break; | |
119 | case 'D': | |
120 | ct->ct |= TCG_CT_REG; | |
121 | tcg_regset_set_reg(ct->u.regs, TCG_REG_EDI); | |
122 | break; | |
123 | case 'q': | |
124 | ct->ct |= TCG_CT_REG; | |
125 | tcg_regset_set32(ct->u.regs, 0, 0xf); | |
126 | break; | |
127 | case 'r': | |
128 | ct->ct |= TCG_CT_REG; | |
129 | tcg_regset_set32(ct->u.regs, 0, 0xff); | |
130 | break; | |
131 | ||
132 | /* qemu_ld/st address constraint */ | |
133 | case 'L': | |
134 | ct->ct |= TCG_CT_REG; | |
135 | tcg_regset_set32(ct->u.regs, 0, 0xff); | |
136 | tcg_regset_reset_reg(ct->u.regs, TCG_REG_EAX); | |
137 | tcg_regset_reset_reg(ct->u.regs, TCG_REG_EDX); | |
138 | break; | |
139 | default: | |
140 | return -1; | |
141 | } | |
142 | ct_str++; | |
143 | *pct_str = ct_str; | |
144 | return 0; | |
145 | } | |
146 | ||
147 | /* test if a constant matches the constraint */ | |
148 | static inline int tcg_target_const_match(tcg_target_long val, | |
149 | const TCGArgConstraint *arg_ct) | |
150 | { | |
151 | int ct; | |
152 | ct = arg_ct->ct; | |
153 | if (ct & TCG_CT_CONST) | |
154 | return 1; | |
155 | else | |
156 | return 0; | |
157 | } | |
158 | ||
fcb5dac1 RH |
159 | #define P_EXT 0x100 /* 0x0f opcode prefix */ |
160 | ||
a369a702 RH |
161 | #define OPC_ARITH_EvIz (0x81) |
162 | #define OPC_ARITH_EvIb (0x83) | |
81570a70 RH |
163 | #define OPC_ARITH_GvEv (0x03) /* ... plus (ARITH_FOO << 3) */ |
164 | #define OPC_ADD_GvEv (OPC_ARITH_GvEv | (ARITH_ADD << 3)) | |
fcb5dac1 | 165 | #define OPC_BSWAP (0xc8 | P_EXT) |
aadb21a4 | 166 | #define OPC_CALL_Jz (0xe8) |
81570a70 RH |
167 | #define OPC_CMP_GvEv (OPC_ARITH_GvEv | (ARITH_CMP << 3)) |
168 | #define OPC_DEC_r32 (0x48) | |
169 | #define OPC_INC_r32 (0x40) | |
da441cff RH |
170 | #define OPC_JCC_long (0x80 | P_EXT) /* ... plus condition code */ |
171 | #define OPC_JCC_short (0x70) /* ... plus condition code */ | |
172 | #define OPC_JMP_long (0xe9) | |
173 | #define OPC_JMP_short (0xeb) | |
af266089 RH |
174 | #define OPC_MOVB_EvGv (0x88) /* stores, more or less */ |
175 | #define OPC_MOVL_EvGv (0x89) /* stores, more or less */ | |
176 | #define OPC_MOVL_GvEv (0x8b) /* loads, more or less */ | |
ef10b106 | 177 | #define OPC_MOVL_Iv (0xb8) |
6817c355 RH |
178 | #define OPC_MOVSBL (0xbe | P_EXT) |
179 | #define OPC_MOVSWL (0xbf | P_EXT) | |
55e082a7 RH |
180 | #define OPC_MOVZBL (0xb6 | P_EXT) |
181 | #define OPC_MOVZWL (0xb7 | P_EXT) | |
6858614e RH |
182 | #define OPC_POP_r32 (0x58) |
183 | #define OPC_PUSH_r32 (0x50) | |
184 | #define OPC_PUSH_Iv (0x68) | |
185 | #define OPC_PUSH_Ib (0x6a) | |
3c3accc6 | 186 | #define OPC_RET (0xc3) |
f53dba01 RH |
187 | #define OPC_SHIFT_1 (0xd1) |
188 | #define OPC_SHIFT_Ib (0xc1) | |
189 | #define OPC_SHIFT_cl (0xd3) | |
81570a70 | 190 | #define OPC_TESTL (0x85) |
fcb5dac1 | 191 | |
da441cff | 192 | /* Group 1 opcode extensions for 0x80-0x83. */ |
c896fe29 FB |
193 | #define ARITH_ADD 0 |
194 | #define ARITH_OR 1 | |
195 | #define ARITH_ADC 2 | |
196 | #define ARITH_SBB 3 | |
197 | #define ARITH_AND 4 | |
198 | #define ARITH_SUB 5 | |
199 | #define ARITH_XOR 6 | |
200 | #define ARITH_CMP 7 | |
201 | ||
da441cff | 202 | /* Group 2 opcode extensions for 0xc0, 0xc1, 0xd0-0xd3. */ |
9619376c AJ |
203 | #define SHIFT_ROL 0 |
204 | #define SHIFT_ROR 1 | |
c896fe29 FB |
205 | #define SHIFT_SHL 4 |
206 | #define SHIFT_SHR 5 | |
207 | #define SHIFT_SAR 7 | |
208 | ||
da441cff | 209 | /* Group 5 opcode extensions for 0xff. */ |
aadb21a4 | 210 | #define EXT_CALLN_Ev 2 |
da441cff RH |
211 | #define EXT_JMPN_Ev 4 |
212 | ||
213 | /* Condition codes to be added to OPC_JCC_{long,short}. */ | |
c896fe29 FB |
214 | #define JCC_JMP (-1) |
215 | #define JCC_JO 0x0 | |
216 | #define JCC_JNO 0x1 | |
217 | #define JCC_JB 0x2 | |
218 | #define JCC_JAE 0x3 | |
219 | #define JCC_JE 0x4 | |
220 | #define JCC_JNE 0x5 | |
221 | #define JCC_JBE 0x6 | |
222 | #define JCC_JA 0x7 | |
223 | #define JCC_JS 0x8 | |
224 | #define JCC_JNS 0x9 | |
225 | #define JCC_JP 0xa | |
226 | #define JCC_JNP 0xb | |
227 | #define JCC_JL 0xc | |
228 | #define JCC_JGE 0xd | |
229 | #define JCC_JLE 0xe | |
230 | #define JCC_JG 0xf | |
231 | ||
c896fe29 FB |
232 | static const uint8_t tcg_cond_to_jcc[10] = { |
233 | [TCG_COND_EQ] = JCC_JE, | |
234 | [TCG_COND_NE] = JCC_JNE, | |
235 | [TCG_COND_LT] = JCC_JL, | |
236 | [TCG_COND_GE] = JCC_JGE, | |
237 | [TCG_COND_LE] = JCC_JLE, | |
238 | [TCG_COND_GT] = JCC_JG, | |
239 | [TCG_COND_LTU] = JCC_JB, | |
240 | [TCG_COND_GEU] = JCC_JAE, | |
241 | [TCG_COND_LEU] = JCC_JBE, | |
242 | [TCG_COND_GTU] = JCC_JA, | |
243 | }; | |
244 | ||
245 | static inline void tcg_out_opc(TCGContext *s, int opc) | |
246 | { | |
247 | if (opc & P_EXT) | |
248 | tcg_out8(s, 0x0f); | |
249 | tcg_out8(s, opc); | |
250 | } | |
251 | ||
252 | static inline void tcg_out_modrm(TCGContext *s, int opc, int r, int rm) | |
253 | { | |
254 | tcg_out_opc(s, opc); | |
255 | tcg_out8(s, 0xc0 | (r << 3) | rm); | |
256 | } | |
257 | ||
258 | /* rm == -1 means no register index */ | |
259 | static inline void tcg_out_modrm_offset(TCGContext *s, int opc, int r, int rm, | |
260 | int32_t offset) | |
261 | { | |
262 | tcg_out_opc(s, opc); | |
263 | if (rm == -1) { | |
264 | tcg_out8(s, 0x05 | (r << 3)); | |
265 | tcg_out32(s, offset); | |
266 | } else if (offset == 0 && rm != TCG_REG_EBP) { | |
267 | if (rm == TCG_REG_ESP) { | |
268 | tcg_out8(s, 0x04 | (r << 3)); | |
269 | tcg_out8(s, 0x24); | |
270 | } else { | |
271 | tcg_out8(s, 0x00 | (r << 3) | rm); | |
272 | } | |
273 | } else if ((int8_t)offset == offset) { | |
274 | if (rm == TCG_REG_ESP) { | |
275 | tcg_out8(s, 0x44 | (r << 3)); | |
276 | tcg_out8(s, 0x24); | |
277 | } else { | |
278 | tcg_out8(s, 0x40 | (r << 3) | rm); | |
279 | } | |
280 | tcg_out8(s, offset); | |
281 | } else { | |
282 | if (rm == TCG_REG_ESP) { | |
283 | tcg_out8(s, 0x84 | (r << 3)); | |
284 | tcg_out8(s, 0x24); | |
285 | } else { | |
286 | tcg_out8(s, 0x80 | (r << 3) | rm); | |
287 | } | |
288 | tcg_out32(s, offset); | |
289 | } | |
290 | } | |
291 | ||
81570a70 RH |
292 | /* Generate dest op= src. Uses the same ARITH_* codes as tgen_arithi. */ |
293 | static inline void tgen_arithr(TCGContext *s, int subop, int dest, int src) | |
294 | { | |
295 | tcg_out_modrm(s, OPC_ARITH_GvEv + (subop << 3), dest, src); | |
296 | } | |
297 | ||
c896fe29 FB |
298 | static inline void tcg_out_mov(TCGContext *s, int ret, int arg) |
299 | { | |
af266089 RH |
300 | if (arg != ret) { |
301 | tcg_out_modrm(s, OPC_MOVL_GvEv, ret, arg); | |
302 | } | |
c896fe29 FB |
303 | } |
304 | ||
305 | static inline void tcg_out_movi(TCGContext *s, TCGType type, | |
306 | int ret, int32_t arg) | |
307 | { | |
308 | if (arg == 0) { | |
81570a70 | 309 | tgen_arithr(s, ARITH_XOR, ret, ret); |
c896fe29 | 310 | } else { |
ef10b106 | 311 | tcg_out8(s, OPC_MOVL_Iv + ret); |
c896fe29 FB |
312 | tcg_out32(s, arg); |
313 | } | |
314 | } | |
315 | ||
6858614e RH |
316 | static inline void tcg_out_pushi(TCGContext *s, tcg_target_long val) |
317 | { | |
318 | if (val == (int8_t)val) { | |
319 | tcg_out_opc(s, OPC_PUSH_Ib); | |
320 | tcg_out8(s, val); | |
321 | } else { | |
322 | tcg_out_opc(s, OPC_PUSH_Iv); | |
323 | tcg_out32(s, val); | |
324 | } | |
325 | } | |
326 | ||
327 | static inline void tcg_out_push(TCGContext *s, int reg) | |
328 | { | |
329 | tcg_out_opc(s, OPC_PUSH_r32 + reg); | |
330 | } | |
331 | ||
332 | static inline void tcg_out_pop(TCGContext *s, int reg) | |
333 | { | |
334 | tcg_out_opc(s, OPC_POP_r32 + reg); | |
335 | } | |
336 | ||
e4d5434c BS |
337 | static inline void tcg_out_ld(TCGContext *s, TCGType type, int ret, |
338 | int arg1, tcg_target_long arg2) | |
c896fe29 | 339 | { |
af266089 | 340 | tcg_out_modrm_offset(s, OPC_MOVL_GvEv, ret, arg1, arg2); |
c896fe29 FB |
341 | } |
342 | ||
e4d5434c BS |
343 | static inline void tcg_out_st(TCGContext *s, TCGType type, int arg, |
344 | int arg1, tcg_target_long arg2) | |
c896fe29 | 345 | { |
af266089 | 346 | tcg_out_modrm_offset(s, OPC_MOVL_EvGv, arg, arg1, arg2); |
c896fe29 FB |
347 | } |
348 | ||
f53dba01 RH |
349 | static void tcg_out_shifti(TCGContext *s, int subopc, int reg, int count) |
350 | { | |
351 | if (count == 1) { | |
352 | tcg_out_modrm(s, OPC_SHIFT_1, subopc, reg); | |
353 | } else { | |
354 | tcg_out_modrm(s, OPC_SHIFT_Ib, subopc, reg); | |
355 | tcg_out8(s, count); | |
356 | } | |
357 | } | |
358 | ||
fcb5dac1 RH |
359 | static inline void tcg_out_bswap32(TCGContext *s, int reg) |
360 | { | |
361 | tcg_out_opc(s, OPC_BSWAP + reg); | |
362 | } | |
363 | ||
364 | static inline void tcg_out_rolw_8(TCGContext *s, int reg) | |
365 | { | |
366 | tcg_out8(s, 0x66); | |
f53dba01 | 367 | tcg_out_shifti(s, SHIFT_ROL, reg, 8); |
fcb5dac1 RH |
368 | } |
369 | ||
55e082a7 RH |
370 | static inline void tcg_out_ext8u(TCGContext *s, int dest, int src) |
371 | { | |
372 | /* movzbl */ | |
373 | assert(src < 4); | |
374 | tcg_out_modrm(s, OPC_MOVZBL, dest, src); | |
375 | } | |
376 | ||
6817c355 RH |
377 | static void tcg_out_ext8s(TCGContext *s, int dest, int src) |
378 | { | |
379 | /* movsbl */ | |
380 | assert(src < 4); | |
381 | tcg_out_modrm(s, OPC_MOVSBL, dest, src); | |
382 | } | |
383 | ||
55e082a7 RH |
384 | static inline void tcg_out_ext16u(TCGContext *s, int dest, int src) |
385 | { | |
386 | /* movzwl */ | |
387 | tcg_out_modrm(s, OPC_MOVZWL, dest, src); | |
388 | } | |
389 | ||
6817c355 RH |
390 | static inline void tcg_out_ext16s(TCGContext *s, int dest, int src) |
391 | { | |
392 | /* movswl */ | |
393 | tcg_out_modrm(s, OPC_MOVSWL, dest, src); | |
394 | } | |
395 | ||
81570a70 RH |
396 | static inline void tgen_arithi(TCGContext *s, int c, int r0, |
397 | int32_t val, int cf) | |
c896fe29 | 398 | { |
81570a70 RH |
399 | /* ??? While INC is 2 bytes shorter than ADDL $1, they also induce |
400 | partial flags update stalls on Pentium4 and are not recommended | |
401 | by current Intel optimization manuals. */ | |
402 | if (!cf && (c == ARITH_ADD || c == ARITH_SUB) && (val == 1 || val == -1)) { | |
403 | int opc = ((c == ARITH_ADD) ^ (val < 0) ? OPC_INC_r32 : OPC_DEC_r32); | |
404 | tcg_out_opc(s, opc + r0); | |
17cf428f | 405 | } else if (val == (int8_t)val) { |
a369a702 | 406 | tcg_out_modrm(s, OPC_ARITH_EvIb, c, r0); |
c896fe29 | 407 | tcg_out8(s, val); |
b70650cb | 408 | } else if (c == ARITH_AND && val == 0xffu && r0 < 4) { |
55e082a7 | 409 | tcg_out_ext8u(s, r0, r0); |
b70650cb | 410 | } else if (c == ARITH_AND && val == 0xffffu) { |
55e082a7 | 411 | tcg_out_ext16u(s, r0, r0); |
c896fe29 | 412 | } else { |
a369a702 | 413 | tcg_out_modrm(s, OPC_ARITH_EvIz, c, r0); |
c896fe29 FB |
414 | tcg_out32(s, val); |
415 | } | |
416 | } | |
417 | ||
3e9a474e | 418 | static void tcg_out_addi(TCGContext *s, int reg, tcg_target_long val) |
c896fe29 FB |
419 | { |
420 | if (val != 0) | |
17cf428f | 421 | tgen_arithi(s, ARITH_ADD, reg, val, 0); |
c896fe29 FB |
422 | } |
423 | ||
f75b56c1 RH |
424 | /* Use SMALL != 0 to force a short forward branch. */ |
425 | static void tcg_out_jxx(TCGContext *s, int opc, int label_index, int small) | |
c896fe29 FB |
426 | { |
427 | int32_t val, val1; | |
428 | TCGLabel *l = &s->labels[label_index]; | |
429 | ||
430 | if (l->has_value) { | |
431 | val = l->u.value - (tcg_target_long)s->code_ptr; | |
432 | val1 = val - 2; | |
433 | if ((int8_t)val1 == val1) { | |
f75b56c1 | 434 | if (opc == -1) { |
da441cff | 435 | tcg_out8(s, OPC_JMP_short); |
f75b56c1 | 436 | } else { |
da441cff | 437 | tcg_out8(s, OPC_JCC_short + opc); |
f75b56c1 | 438 | } |
c896fe29 FB |
439 | tcg_out8(s, val1); |
440 | } else { | |
f75b56c1 RH |
441 | if (small) { |
442 | tcg_abort(); | |
443 | } | |
c896fe29 | 444 | if (opc == -1) { |
da441cff | 445 | tcg_out8(s, OPC_JMP_long); |
c896fe29 FB |
446 | tcg_out32(s, val - 5); |
447 | } else { | |
da441cff | 448 | tcg_out_opc(s, OPC_JCC_long + opc); |
c896fe29 FB |
449 | tcg_out32(s, val - 6); |
450 | } | |
451 | } | |
f75b56c1 RH |
452 | } else if (small) { |
453 | if (opc == -1) { | |
da441cff | 454 | tcg_out8(s, OPC_JMP_short); |
f75b56c1 | 455 | } else { |
da441cff | 456 | tcg_out8(s, OPC_JCC_short + opc); |
f75b56c1 RH |
457 | } |
458 | tcg_out_reloc(s, s->code_ptr, R_386_PC8, label_index, -1); | |
459 | s->code_ptr += 1; | |
c896fe29 FB |
460 | } else { |
461 | if (opc == -1) { | |
da441cff | 462 | tcg_out8(s, OPC_JMP_long); |
c896fe29 | 463 | } else { |
da441cff | 464 | tcg_out_opc(s, OPC_JCC_long + opc); |
c896fe29 FB |
465 | } |
466 | tcg_out_reloc(s, s->code_ptr, R_386_PC32, label_index, -4); | |
623e265c | 467 | s->code_ptr += 4; |
c896fe29 FB |
468 | } |
469 | } | |
470 | ||
1d2699ae RH |
471 | static void tcg_out_cmp(TCGContext *s, TCGArg arg1, TCGArg arg2, |
472 | int const_arg2) | |
c896fe29 | 473 | { |
c896fe29 FB |
474 | if (const_arg2) { |
475 | if (arg2 == 0) { | |
c896fe29 | 476 | /* test r, r */ |
81570a70 | 477 | tcg_out_modrm(s, OPC_TESTL, arg1, arg1); |
c896fe29 | 478 | } else { |
17cf428f | 479 | tgen_arithi(s, ARITH_CMP, arg1, arg2, 0); |
c896fe29 FB |
480 | } |
481 | } else { | |
81570a70 | 482 | tgen_arithr(s, ARITH_CMP, arg1, arg2); |
c896fe29 | 483 | } |
1d2699ae RH |
484 | } |
485 | ||
8a56e840 | 486 | static void tcg_out_brcond(TCGContext *s, TCGCond cond, |
1d2699ae RH |
487 | TCGArg arg1, TCGArg arg2, int const_arg2, |
488 | int label_index, int small) | |
489 | { | |
490 | tcg_out_cmp(s, arg1, arg2, const_arg2); | |
f75b56c1 | 491 | tcg_out_jxx(s, tcg_cond_to_jcc[cond], label_index, small); |
c896fe29 FB |
492 | } |
493 | ||
494 | /* XXX: we implement it at the target level to avoid having to | |
495 | handle cross basic blocks temporaries */ | |
f75b56c1 RH |
496 | static void tcg_out_brcond2(TCGContext *s, const TCGArg *args, |
497 | const int *const_args, int small) | |
c896fe29 FB |
498 | { |
499 | int label_next; | |
500 | label_next = gen_new_label(); | |
501 | switch(args[4]) { | |
502 | case TCG_COND_EQ: | |
f75b56c1 RH |
503 | tcg_out_brcond(s, TCG_COND_NE, args[0], args[2], const_args[2], |
504 | label_next, 1); | |
505 | tcg_out_brcond(s, TCG_COND_EQ, args[1], args[3], const_args[3], | |
506 | args[5], small); | |
c896fe29 FB |
507 | break; |
508 | case TCG_COND_NE: | |
f75b56c1 RH |
509 | tcg_out_brcond(s, TCG_COND_NE, args[0], args[2], const_args[2], |
510 | args[5], small); | |
511 | tcg_out_brcond(s, TCG_COND_NE, args[1], args[3], const_args[3], | |
512 | args[5], small); | |
c896fe29 FB |
513 | break; |
514 | case TCG_COND_LT: | |
f75b56c1 RH |
515 | tcg_out_brcond(s, TCG_COND_LT, args[1], args[3], const_args[3], |
516 | args[5], small); | |
517 | tcg_out_jxx(s, JCC_JNE, label_next, 1); | |
518 | tcg_out_brcond(s, TCG_COND_LTU, args[0], args[2], const_args[2], | |
519 | args[5], small); | |
c896fe29 FB |
520 | break; |
521 | case TCG_COND_LE: | |
f75b56c1 RH |
522 | tcg_out_brcond(s, TCG_COND_LT, args[1], args[3], const_args[3], |
523 | args[5], small); | |
524 | tcg_out_jxx(s, JCC_JNE, label_next, 1); | |
525 | tcg_out_brcond(s, TCG_COND_LEU, args[0], args[2], const_args[2], | |
526 | args[5], small); | |
c896fe29 FB |
527 | break; |
528 | case TCG_COND_GT: | |
f75b56c1 RH |
529 | tcg_out_brcond(s, TCG_COND_GT, args[1], args[3], const_args[3], |
530 | args[5], small); | |
531 | tcg_out_jxx(s, JCC_JNE, label_next, 1); | |
532 | tcg_out_brcond(s, TCG_COND_GTU, args[0], args[2], const_args[2], | |
533 | args[5], small); | |
c896fe29 FB |
534 | break; |
535 | case TCG_COND_GE: | |
f75b56c1 RH |
536 | tcg_out_brcond(s, TCG_COND_GT, args[1], args[3], const_args[3], |
537 | args[5], small); | |
538 | tcg_out_jxx(s, JCC_JNE, label_next, 1); | |
539 | tcg_out_brcond(s, TCG_COND_GEU, args[0], args[2], const_args[2], | |
540 | args[5], small); | |
c896fe29 FB |
541 | break; |
542 | case TCG_COND_LTU: | |
f75b56c1 RH |
543 | tcg_out_brcond(s, TCG_COND_LTU, args[1], args[3], const_args[3], |
544 | args[5], small); | |
545 | tcg_out_jxx(s, JCC_JNE, label_next, 1); | |
546 | tcg_out_brcond(s, TCG_COND_LTU, args[0], args[2], const_args[2], | |
547 | args[5], small); | |
c896fe29 FB |
548 | break; |
549 | case TCG_COND_LEU: | |
f75b56c1 RH |
550 | tcg_out_brcond(s, TCG_COND_LTU, args[1], args[3], const_args[3], |
551 | args[5], small); | |
552 | tcg_out_jxx(s, JCC_JNE, label_next, 1); | |
553 | tcg_out_brcond(s, TCG_COND_LEU, args[0], args[2], const_args[2], | |
554 | args[5], small); | |
c896fe29 FB |
555 | break; |
556 | case TCG_COND_GTU: | |
f75b56c1 RH |
557 | tcg_out_brcond(s, TCG_COND_GTU, args[1], args[3], const_args[3], |
558 | args[5], small); | |
559 | tcg_out_jxx(s, JCC_JNE, label_next, 1); | |
560 | tcg_out_brcond(s, TCG_COND_GTU, args[0], args[2], const_args[2], | |
561 | args[5], small); | |
c896fe29 FB |
562 | break; |
563 | case TCG_COND_GEU: | |
f75b56c1 RH |
564 | tcg_out_brcond(s, TCG_COND_GTU, args[1], args[3], const_args[3], |
565 | args[5], small); | |
566 | tcg_out_jxx(s, JCC_JNE, label_next, 1); | |
567 | tcg_out_brcond(s, TCG_COND_GEU, args[0], args[2], const_args[2], | |
568 | args[5], small); | |
c896fe29 FB |
569 | break; |
570 | default: | |
571 | tcg_abort(); | |
572 | } | |
573 | tcg_out_label(s, label_next, (tcg_target_long)s->code_ptr); | |
574 | } | |
575 | ||
8a56e840 | 576 | static void tcg_out_setcond(TCGContext *s, TCGCond cond, TCGArg dest, |
1d2699ae RH |
577 | TCGArg arg1, TCGArg arg2, int const_arg2) |
578 | { | |
579 | tcg_out_cmp(s, arg1, arg2, const_arg2); | |
580 | /* setcc */ | |
581 | tcg_out_modrm(s, 0x90 | tcg_cond_to_jcc[cond] | P_EXT, 0, dest); | |
a369a702 | 582 | tcg_out_ext8u(s, dest, dest); |
1d2699ae RH |
583 | } |
584 | ||
585 | static void tcg_out_setcond2(TCGContext *s, const TCGArg *args, | |
586 | const int *const_args) | |
587 | { | |
588 | TCGArg new_args[6]; | |
589 | int label_true, label_over; | |
590 | ||
591 | memcpy(new_args, args+1, 5*sizeof(TCGArg)); | |
592 | ||
593 | if (args[0] == args[1] || args[0] == args[2] | |
594 | || (!const_args[3] && args[0] == args[3]) | |
595 | || (!const_args[4] && args[0] == args[4])) { | |
596 | /* When the destination overlaps with one of the argument | |
597 | registers, don't do anything tricky. */ | |
598 | label_true = gen_new_label(); | |
599 | label_over = gen_new_label(); | |
600 | ||
601 | new_args[5] = label_true; | |
602 | tcg_out_brcond2(s, new_args, const_args+1, 1); | |
603 | ||
604 | tcg_out_movi(s, TCG_TYPE_I32, args[0], 0); | |
605 | tcg_out_jxx(s, JCC_JMP, label_over, 1); | |
606 | tcg_out_label(s, label_true, (tcg_target_long)s->code_ptr); | |
607 | ||
608 | tcg_out_movi(s, TCG_TYPE_I32, args[0], 1); | |
609 | tcg_out_label(s, label_over, (tcg_target_long)s->code_ptr); | |
610 | } else { | |
611 | /* When the destination does not overlap one of the arguments, | |
612 | clear the destination first, jump if cond false, and emit an | |
613 | increment in the true case. This results in smaller code. */ | |
614 | ||
615 | tcg_out_movi(s, TCG_TYPE_I32, args[0], 0); | |
616 | ||
617 | label_over = gen_new_label(); | |
618 | new_args[4] = tcg_invert_cond(new_args[4]); | |
619 | new_args[5] = label_over; | |
620 | tcg_out_brcond2(s, new_args, const_args+1, 1); | |
621 | ||
622 | tgen_arithi(s, ARITH_ADD, args[0], 1, 0); | |
623 | tcg_out_label(s, label_over, (tcg_target_long)s->code_ptr); | |
624 | } | |
625 | } | |
626 | ||
aadb21a4 RH |
627 | static void tcg_out_calli(TCGContext *s, tcg_target_long dest) |
628 | { | |
629 | tcg_out_opc(s, OPC_CALL_Jz); | |
630 | tcg_out32(s, dest - (tcg_target_long)s->code_ptr - 4); | |
631 | } | |
632 | ||
c896fe29 | 633 | #if defined(CONFIG_SOFTMMU) |
79383c9c BS |
634 | |
635 | #include "../../softmmu_defs.h" | |
c896fe29 FB |
636 | |
637 | static void *qemu_ld_helpers[4] = { | |
638 | __ldb_mmu, | |
639 | __ldw_mmu, | |
640 | __ldl_mmu, | |
641 | __ldq_mmu, | |
642 | }; | |
643 | ||
644 | static void *qemu_st_helpers[4] = { | |
645 | __stb_mmu, | |
646 | __stw_mmu, | |
647 | __stl_mmu, | |
648 | __stq_mmu, | |
649 | }; | |
650 | #endif | |
651 | ||
379f6698 PB |
652 | #ifndef CONFIG_USER_ONLY |
653 | #define GUEST_BASE 0 | |
654 | #endif | |
655 | ||
c896fe29 FB |
656 | /* XXX: qemu_ld and qemu_st could be modified to clobber only EDX and |
657 | EAX. It will be useful once fixed registers globals are less | |
658 | common. */ | |
659 | static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, | |
660 | int opc) | |
661 | { | |
662 | int addr_reg, data_reg, data_reg2, r0, r1, mem_index, s_bits, bswap; | |
663 | #if defined(CONFIG_SOFTMMU) | |
664 | uint8_t *label1_ptr, *label2_ptr; | |
665 | #endif | |
666 | #if TARGET_LONG_BITS == 64 | |
667 | #if defined(CONFIG_SOFTMMU) | |
668 | uint8_t *label3_ptr; | |
669 | #endif | |
670 | int addr_reg2; | |
671 | #endif | |
672 | ||
673 | data_reg = *args++; | |
674 | if (opc == 3) | |
675 | data_reg2 = *args++; | |
676 | else | |
677 | data_reg2 = 0; | |
678 | addr_reg = *args++; | |
679 | #if TARGET_LONG_BITS == 64 | |
680 | addr_reg2 = *args++; | |
681 | #endif | |
682 | mem_index = *args; | |
683 | s_bits = opc & 3; | |
684 | ||
685 | r0 = TCG_REG_EAX; | |
686 | r1 = TCG_REG_EDX; | |
687 | ||
688 | #if defined(CONFIG_SOFTMMU) | |
689 | tcg_out_mov(s, r1, addr_reg); | |
c896fe29 | 690 | tcg_out_mov(s, r0, addr_reg); |
a369a702 | 691 | |
f53dba01 RH |
692 | tcg_out_shifti(s, SHIFT_SHR, r1, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS); |
693 | ||
a369a702 RH |
694 | tgen_arithi(s, ARITH_AND, r0, TARGET_PAGE_MASK | ((1 << s_bits) - 1), 0); |
695 | tgen_arithi(s, ARITH_AND, r1, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS, 0); | |
c896fe29 FB |
696 | |
697 | tcg_out_opc(s, 0x8d); /* lea offset(r1, %ebp), r1 */ | |
698 | tcg_out8(s, 0x80 | (r1 << 3) | 0x04); | |
699 | tcg_out8(s, (5 << 3) | r1); | |
700 | tcg_out32(s, offsetof(CPUState, tlb_table[mem_index][0].addr_read)); | |
701 | ||
702 | /* cmp 0(r1), r0 */ | |
81570a70 | 703 | tcg_out_modrm_offset(s, OPC_CMP_GvEv, r0, r1, 0); |
c896fe29 FB |
704 | |
705 | tcg_out_mov(s, r0, addr_reg); | |
706 | ||
707 | #if TARGET_LONG_BITS == 32 | |
708 | /* je label1 */ | |
da441cff | 709 | tcg_out8(s, OPC_JCC_short + JCC_JE); |
c896fe29 FB |
710 | label1_ptr = s->code_ptr; |
711 | s->code_ptr++; | |
712 | #else | |
713 | /* jne label3 */ | |
da441cff | 714 | tcg_out8(s, OPC_JCC_short + JCC_JNE); |
c896fe29 FB |
715 | label3_ptr = s->code_ptr; |
716 | s->code_ptr++; | |
717 | ||
718 | /* cmp 4(r1), addr_reg2 */ | |
81570a70 | 719 | tcg_out_modrm_offset(s, OPC_CMP_GvEv, addr_reg2, r1, 4); |
c896fe29 FB |
720 | |
721 | /* je label1 */ | |
da441cff | 722 | tcg_out8(s, OPC_JCC_short + JCC_JE); |
c896fe29 FB |
723 | label1_ptr = s->code_ptr; |
724 | s->code_ptr++; | |
725 | ||
726 | /* label3: */ | |
727 | *label3_ptr = s->code_ptr - label3_ptr - 1; | |
728 | #endif | |
729 | ||
730 | /* XXX: move that code at the end of the TB */ | |
731 | #if TARGET_LONG_BITS == 32 | |
732 | tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_EDX, mem_index); | |
733 | #else | |
734 | tcg_out_mov(s, TCG_REG_EDX, addr_reg2); | |
735 | tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_ECX, mem_index); | |
736 | #endif | |
aadb21a4 | 737 | tcg_out_calli(s, (tcg_target_long)qemu_ld_helpers[s_bits]); |
c896fe29 FB |
738 | |
739 | switch(opc) { | |
740 | case 0 | 4: | |
6817c355 | 741 | tcg_out_ext8s(s, data_reg, TCG_REG_EAX); |
c896fe29 FB |
742 | break; |
743 | case 1 | 4: | |
6817c355 | 744 | tcg_out_ext16s(s, data_reg, TCG_REG_EAX); |
c896fe29 FB |
745 | break; |
746 | case 0: | |
55e082a7 | 747 | tcg_out_ext8u(s, data_reg, TCG_REG_EAX); |
9db3ba4d | 748 | break; |
c896fe29 | 749 | case 1: |
55e082a7 | 750 | tcg_out_ext16u(s, data_reg, TCG_REG_EAX); |
9db3ba4d | 751 | break; |
c896fe29 FB |
752 | case 2: |
753 | default: | |
754 | tcg_out_mov(s, data_reg, TCG_REG_EAX); | |
755 | break; | |
756 | case 3: | |
757 | if (data_reg == TCG_REG_EDX) { | |
758 | tcg_out_opc(s, 0x90 + TCG_REG_EDX); /* xchg %edx, %eax */ | |
759 | tcg_out_mov(s, data_reg2, TCG_REG_EAX); | |
760 | } else { | |
761 | tcg_out_mov(s, data_reg, TCG_REG_EAX); | |
762 | tcg_out_mov(s, data_reg2, TCG_REG_EDX); | |
763 | } | |
764 | break; | |
765 | } | |
766 | ||
767 | /* jmp label2 */ | |
da441cff | 768 | tcg_out8(s, OPC_JMP_short); |
c896fe29 FB |
769 | label2_ptr = s->code_ptr; |
770 | s->code_ptr++; | |
771 | ||
772 | /* label1: */ | |
773 | *label1_ptr = s->code_ptr - label1_ptr - 1; | |
774 | ||
775 | /* add x(r1), r0 */ | |
81570a70 RH |
776 | tcg_out_modrm_offset(s, OPC_ADD_GvEv, r0, r1, |
777 | offsetof(CPUTLBEntry, addend) - | |
c896fe29 FB |
778 | offsetof(CPUTLBEntry, addr_read)); |
779 | #else | |
780 | r0 = addr_reg; | |
781 | #endif | |
782 | ||
783 | #ifdef TARGET_WORDS_BIGENDIAN | |
784 | bswap = 1; | |
785 | #else | |
786 | bswap = 0; | |
787 | #endif | |
788 | switch(opc) { | |
789 | case 0: | |
790 | /* movzbl */ | |
55e082a7 | 791 | tcg_out_modrm_offset(s, OPC_MOVZBL, data_reg, r0, GUEST_BASE); |
c896fe29 FB |
792 | break; |
793 | case 0 | 4: | |
794 | /* movsbl */ | |
6817c355 | 795 | tcg_out_modrm_offset(s, OPC_MOVSBL, data_reg, r0, GUEST_BASE); |
c896fe29 FB |
796 | break; |
797 | case 1: | |
798 | /* movzwl */ | |
55e082a7 | 799 | tcg_out_modrm_offset(s, OPC_MOVZWL, data_reg, r0, GUEST_BASE); |
c896fe29 | 800 | if (bswap) { |
fcb5dac1 | 801 | tcg_out_rolw_8(s, data_reg); |
c896fe29 FB |
802 | } |
803 | break; | |
804 | case 1 | 4: | |
805 | /* movswl */ | |
6817c355 | 806 | tcg_out_modrm_offset(s, OPC_MOVSWL, data_reg, r0, GUEST_BASE); |
c896fe29 | 807 | if (bswap) { |
fcb5dac1 | 808 | tcg_out_rolw_8(s, data_reg); |
c896fe29 FB |
809 | |
810 | /* movswl data_reg, data_reg */ | |
6817c355 | 811 | tcg_out_modrm(s, OPC_MOVSWL, data_reg, data_reg); |
c896fe29 FB |
812 | } |
813 | break; | |
814 | case 2: | |
af266089 | 815 | tcg_out_ld(s, TCG_TYPE_I32, data_reg, r0, GUEST_BASE); |
c896fe29 | 816 | if (bswap) { |
fcb5dac1 | 817 | tcg_out_bswap32(s, data_reg); |
c896fe29 FB |
818 | } |
819 | break; | |
820 | case 3: | |
a042ef94 RH |
821 | if (bswap) { |
822 | int t = data_reg; | |
823 | data_reg = data_reg2; | |
824 | data_reg2 = t; | |
c896fe29 | 825 | } |
a042ef94 | 826 | if (r0 != data_reg) { |
af266089 RH |
827 | tcg_out_ld(s, TCG_TYPE_I32, data_reg, r0, GUEST_BASE); |
828 | tcg_out_ld(s, TCG_TYPE_I32, data_reg2, r0, GUEST_BASE + 4); | |
c896fe29 | 829 | } else { |
a042ef94 RH |
830 | tcg_out_ld(s, TCG_TYPE_I32, data_reg2, r0, GUEST_BASE + 4); |
831 | tcg_out_ld(s, TCG_TYPE_I32, data_reg, r0, GUEST_BASE); | |
832 | } | |
833 | if (bswap) { | |
fcb5dac1 | 834 | tcg_out_bswap32(s, data_reg); |
fcb5dac1 | 835 | tcg_out_bswap32(s, data_reg2); |
c896fe29 FB |
836 | } |
837 | break; | |
838 | default: | |
839 | tcg_abort(); | |
840 | } | |
841 | ||
842 | #if defined(CONFIG_SOFTMMU) | |
843 | /* label2: */ | |
844 | *label2_ptr = s->code_ptr - label2_ptr - 1; | |
845 | #endif | |
846 | } | |
847 | ||
848 | ||
849 | static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, | |
850 | int opc) | |
851 | { | |
852 | int addr_reg, data_reg, data_reg2, r0, r1, mem_index, s_bits, bswap; | |
853 | #if defined(CONFIG_SOFTMMU) | |
aadb21a4 | 854 | int stack_adjust; |
c896fe29 FB |
855 | uint8_t *label1_ptr, *label2_ptr; |
856 | #endif | |
857 | #if TARGET_LONG_BITS == 64 | |
858 | #if defined(CONFIG_SOFTMMU) | |
859 | uint8_t *label3_ptr; | |
860 | #endif | |
861 | int addr_reg2; | |
862 | #endif | |
863 | ||
864 | data_reg = *args++; | |
865 | if (opc == 3) | |
866 | data_reg2 = *args++; | |
867 | else | |
868 | data_reg2 = 0; | |
869 | addr_reg = *args++; | |
870 | #if TARGET_LONG_BITS == 64 | |
871 | addr_reg2 = *args++; | |
872 | #endif | |
873 | mem_index = *args; | |
874 | ||
875 | s_bits = opc; | |
876 | ||
877 | r0 = TCG_REG_EAX; | |
878 | r1 = TCG_REG_EDX; | |
879 | ||
880 | #if defined(CONFIG_SOFTMMU) | |
881 | tcg_out_mov(s, r1, addr_reg); | |
c896fe29 FB |
882 | tcg_out_mov(s, r0, addr_reg); |
883 | ||
f53dba01 RH |
884 | tcg_out_shifti(s, SHIFT_SHR, r1, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS); |
885 | ||
a369a702 RH |
886 | tgen_arithi(s, ARITH_AND, r0, TARGET_PAGE_MASK | ((1 << s_bits) - 1), 0); |
887 | tgen_arithi(s, ARITH_AND, r1, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS, 0); | |
c896fe29 FB |
888 | |
889 | tcg_out_opc(s, 0x8d); /* lea offset(r1, %ebp), r1 */ | |
890 | tcg_out8(s, 0x80 | (r1 << 3) | 0x04); | |
891 | tcg_out8(s, (5 << 3) | r1); | |
892 | tcg_out32(s, offsetof(CPUState, tlb_table[mem_index][0].addr_write)); | |
893 | ||
894 | /* cmp 0(r1), r0 */ | |
81570a70 | 895 | tcg_out_modrm_offset(s, OPC_CMP_GvEv, r0, r1, 0); |
c896fe29 FB |
896 | |
897 | tcg_out_mov(s, r0, addr_reg); | |
898 | ||
899 | #if TARGET_LONG_BITS == 32 | |
900 | /* je label1 */ | |
da441cff | 901 | tcg_out8(s, OPC_JCC_short + JCC_JE); |
c896fe29 FB |
902 | label1_ptr = s->code_ptr; |
903 | s->code_ptr++; | |
904 | #else | |
905 | /* jne label3 */ | |
da441cff | 906 | tcg_out8(s, OPC_JCC_short + JCC_JNE); |
c896fe29 FB |
907 | label3_ptr = s->code_ptr; |
908 | s->code_ptr++; | |
909 | ||
910 | /* cmp 4(r1), addr_reg2 */ | |
81570a70 | 911 | tcg_out_modrm_offset(s, OPC_CMP_GvEv, addr_reg2, r1, 4); |
c896fe29 FB |
912 | |
913 | /* je label1 */ | |
da441cff | 914 | tcg_out8(s, OPC_JCC_short + JCC_JE); |
c896fe29 FB |
915 | label1_ptr = s->code_ptr; |
916 | s->code_ptr++; | |
917 | ||
918 | /* label3: */ | |
919 | *label3_ptr = s->code_ptr - label3_ptr - 1; | |
920 | #endif | |
921 | ||
922 | /* XXX: move that code at the end of the TB */ | |
923 | #if TARGET_LONG_BITS == 32 | |
924 | if (opc == 3) { | |
925 | tcg_out_mov(s, TCG_REG_EDX, data_reg); | |
926 | tcg_out_mov(s, TCG_REG_ECX, data_reg2); | |
6858614e | 927 | tcg_out_pushi(s, mem_index); |
aadb21a4 | 928 | stack_adjust = 4; |
c896fe29 FB |
929 | } else { |
930 | switch(opc) { | |
931 | case 0: | |
55e082a7 | 932 | tcg_out_ext8u(s, TCG_REG_EDX, data_reg); |
c896fe29 FB |
933 | break; |
934 | case 1: | |
55e082a7 | 935 | tcg_out_ext16u(s, TCG_REG_EDX, data_reg); |
c896fe29 FB |
936 | break; |
937 | case 2: | |
938 | tcg_out_mov(s, TCG_REG_EDX, data_reg); | |
939 | break; | |
940 | } | |
941 | tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_ECX, mem_index); | |
aadb21a4 | 942 | stack_adjust = 0; |
c896fe29 FB |
943 | } |
944 | #else | |
945 | if (opc == 3) { | |
946 | tcg_out_mov(s, TCG_REG_EDX, addr_reg2); | |
6858614e RH |
947 | tcg_out_pushi(s, mem_index); |
948 | tcg_out_push(s, data_reg2); | |
949 | tcg_out_push(s, data_reg); | |
aadb21a4 | 950 | stack_adjust = 12; |
c896fe29 FB |
951 | } else { |
952 | tcg_out_mov(s, TCG_REG_EDX, addr_reg2); | |
953 | switch(opc) { | |
954 | case 0: | |
55e082a7 | 955 | tcg_out_ext8u(s, TCG_REG_ECX, data_reg); |
c896fe29 FB |
956 | break; |
957 | case 1: | |
55e082a7 | 958 | tcg_out_ext16u(s, TCG_REG_ECX, data_reg); |
c896fe29 FB |
959 | break; |
960 | case 2: | |
961 | tcg_out_mov(s, TCG_REG_ECX, data_reg); | |
962 | break; | |
963 | } | |
6858614e | 964 | tcg_out_pushi(s, mem_index); |
aadb21a4 | 965 | stack_adjust = 4; |
c896fe29 FB |
966 | } |
967 | #endif | |
aadb21a4 RH |
968 | |
969 | tcg_out_calli(s, (tcg_target_long)qemu_st_helpers[s_bits]); | |
970 | ||
971 | if (stack_adjust == 4) { | |
972 | /* Pop and discard. This is 2 bytes smaller than the add. */ | |
973 | tcg_out_pop(s, TCG_REG_ECX); | |
974 | } else if (stack_adjust != 0) { | |
975 | tcg_out_addi(s, TCG_REG_ESP, stack_adjust); | |
976 | } | |
977 | ||
c896fe29 | 978 | /* jmp label2 */ |
da441cff | 979 | tcg_out8(s, OPC_JMP_short); |
c896fe29 FB |
980 | label2_ptr = s->code_ptr; |
981 | s->code_ptr++; | |
982 | ||
983 | /* label1: */ | |
984 | *label1_ptr = s->code_ptr - label1_ptr - 1; | |
985 | ||
986 | /* add x(r1), r0 */ | |
81570a70 RH |
987 | tcg_out_modrm_offset(s, OPC_ADD_GvEv, r0, r1, |
988 | offsetof(CPUTLBEntry, addend) - | |
c896fe29 FB |
989 | offsetof(CPUTLBEntry, addr_write)); |
990 | #else | |
991 | r0 = addr_reg; | |
992 | #endif | |
993 | ||
994 | #ifdef TARGET_WORDS_BIGENDIAN | |
995 | bswap = 1; | |
996 | #else | |
997 | bswap = 0; | |
998 | #endif | |
999 | switch(opc) { | |
1000 | case 0: | |
af266089 | 1001 | tcg_out_modrm_offset(s, OPC_MOVB_EvGv, data_reg, r0, GUEST_BASE); |
c896fe29 FB |
1002 | break; |
1003 | case 1: | |
1004 | if (bswap) { | |
1005 | tcg_out_mov(s, r1, data_reg); | |
fcb5dac1 | 1006 | tcg_out_rolw_8(s, r1); |
c896fe29 FB |
1007 | data_reg = r1; |
1008 | } | |
1009 | /* movw */ | |
1010 | tcg_out8(s, 0x66); | |
af266089 | 1011 | tcg_out_modrm_offset(s, OPC_MOVL_EvGv, data_reg, r0, GUEST_BASE); |
c896fe29 FB |
1012 | break; |
1013 | case 2: | |
1014 | if (bswap) { | |
1015 | tcg_out_mov(s, r1, data_reg); | |
fcb5dac1 | 1016 | tcg_out_bswap32(s, r1); |
c896fe29 FB |
1017 | data_reg = r1; |
1018 | } | |
af266089 | 1019 | tcg_out_st(s, TCG_TYPE_I32, data_reg, r0, GUEST_BASE); |
c896fe29 FB |
1020 | break; |
1021 | case 3: | |
1022 | if (bswap) { | |
1023 | tcg_out_mov(s, r1, data_reg2); | |
fcb5dac1 | 1024 | tcg_out_bswap32(s, r1); |
af266089 | 1025 | tcg_out_st(s, TCG_TYPE_I32, r1, r0, GUEST_BASE); |
c896fe29 | 1026 | tcg_out_mov(s, r1, data_reg); |
fcb5dac1 | 1027 | tcg_out_bswap32(s, r1); |
af266089 | 1028 | tcg_out_st(s, TCG_TYPE_I32, r1, r0, GUEST_BASE + 4); |
c896fe29 | 1029 | } else { |
af266089 RH |
1030 | tcg_out_st(s, TCG_TYPE_I32, data_reg, r0, GUEST_BASE); |
1031 | tcg_out_st(s, TCG_TYPE_I32, data_reg2, r0, GUEST_BASE + 4); | |
c896fe29 FB |
1032 | } |
1033 | break; | |
1034 | default: | |
1035 | tcg_abort(); | |
1036 | } | |
1037 | ||
1038 | #if defined(CONFIG_SOFTMMU) | |
1039 | /* label2: */ | |
1040 | *label2_ptr = s->code_ptr - label2_ptr - 1; | |
1041 | #endif | |
1042 | } | |
1043 | ||
a9751609 | 1044 | static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, |
c896fe29 FB |
1045 | const TCGArg *args, const int *const_args) |
1046 | { | |
1047 | int c; | |
1048 | ||
1049 | switch(opc) { | |
1050 | case INDEX_op_exit_tb: | |
1051 | tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_EAX, args[0]); | |
da441cff | 1052 | tcg_out8(s, OPC_JMP_long); /* jmp tb_ret_addr */ |
b03cce8e | 1053 | tcg_out32(s, tb_ret_addr - s->code_ptr - 4); |
c896fe29 FB |
1054 | break; |
1055 | case INDEX_op_goto_tb: | |
1056 | if (s->tb_jmp_offset) { | |
1057 | /* direct jump method */ | |
da441cff | 1058 | tcg_out8(s, OPC_JMP_long); /* jmp im */ |
c896fe29 FB |
1059 | s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf; |
1060 | tcg_out32(s, 0); | |
1061 | } else { | |
1062 | /* indirect jump method */ | |
da441cff | 1063 | tcg_out_modrm_offset(s, 0xff, EXT_JMPN_Ev, -1, |
c896fe29 FB |
1064 | (tcg_target_long)(s->tb_next + args[0])); |
1065 | } | |
1066 | s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf; | |
1067 | break; | |
1068 | case INDEX_op_call: | |
1069 | if (const_args[0]) { | |
aadb21a4 | 1070 | tcg_out_calli(s, args[0]); |
c896fe29 | 1071 | } else { |
aadb21a4 RH |
1072 | /* call *reg */ |
1073 | tcg_out_modrm(s, 0xff, EXT_CALLN_Ev, args[0]); | |
c896fe29 FB |
1074 | } |
1075 | break; | |
1076 | case INDEX_op_jmp: | |
1077 | if (const_args[0]) { | |
da441cff | 1078 | tcg_out8(s, OPC_JMP_long); |
c896fe29 FB |
1079 | tcg_out32(s, args[0] - (tcg_target_long)s->code_ptr - 4); |
1080 | } else { | |
da441cff RH |
1081 | /* jmp *reg */ |
1082 | tcg_out_modrm(s, 0xff, EXT_JMPN_Ev, args[0]); | |
c896fe29 FB |
1083 | } |
1084 | break; | |
1085 | case INDEX_op_br: | |
f75b56c1 | 1086 | tcg_out_jxx(s, JCC_JMP, args[0], 0); |
c896fe29 FB |
1087 | break; |
1088 | case INDEX_op_movi_i32: | |
1089 | tcg_out_movi(s, TCG_TYPE_I32, args[0], args[1]); | |
1090 | break; | |
1091 | case INDEX_op_ld8u_i32: | |
1092 | /* movzbl */ | |
55e082a7 | 1093 | tcg_out_modrm_offset(s, OPC_MOVZBL, args[0], args[1], args[2]); |
c896fe29 FB |
1094 | break; |
1095 | case INDEX_op_ld8s_i32: | |
1096 | /* movsbl */ | |
6817c355 | 1097 | tcg_out_modrm_offset(s, OPC_MOVSBL, args[0], args[1], args[2]); |
c896fe29 FB |
1098 | break; |
1099 | case INDEX_op_ld16u_i32: | |
1100 | /* movzwl */ | |
55e082a7 | 1101 | tcg_out_modrm_offset(s, OPC_MOVZWL, args[0], args[1], args[2]); |
c896fe29 FB |
1102 | break; |
1103 | case INDEX_op_ld16s_i32: | |
1104 | /* movswl */ | |
6817c355 | 1105 | tcg_out_modrm_offset(s, OPC_MOVSWL, args[0], args[1], args[2]); |
c896fe29 FB |
1106 | break; |
1107 | case INDEX_op_ld_i32: | |
af266089 | 1108 | tcg_out_ld(s, TCG_TYPE_I32, args[0], args[1], args[2]); |
c896fe29 FB |
1109 | break; |
1110 | case INDEX_op_st8_i32: | |
1111 | /* movb */ | |
af266089 | 1112 | tcg_out_modrm_offset(s, OPC_MOVB_EvGv, args[0], args[1], args[2]); |
c896fe29 FB |
1113 | break; |
1114 | case INDEX_op_st16_i32: | |
1115 | /* movw */ | |
1116 | tcg_out8(s, 0x66); | |
af266089 | 1117 | tcg_out_modrm_offset(s, OPC_MOVL_EvGv, args[0], args[1], args[2]); |
c896fe29 FB |
1118 | break; |
1119 | case INDEX_op_st_i32: | |
af266089 | 1120 | tcg_out_st(s, TCG_TYPE_I32, args[0], args[1], args[2]); |
c896fe29 FB |
1121 | break; |
1122 | case INDEX_op_sub_i32: | |
1123 | c = ARITH_SUB; | |
1124 | goto gen_arith; | |
1125 | case INDEX_op_and_i32: | |
1126 | c = ARITH_AND; | |
1127 | goto gen_arith; | |
1128 | case INDEX_op_or_i32: | |
1129 | c = ARITH_OR; | |
1130 | goto gen_arith; | |
1131 | case INDEX_op_xor_i32: | |
1132 | c = ARITH_XOR; | |
1133 | goto gen_arith; | |
1134 | case INDEX_op_add_i32: | |
1135 | c = ARITH_ADD; | |
1136 | gen_arith: | |
1137 | if (const_args[2]) { | |
17cf428f | 1138 | tgen_arithi(s, c, args[0], args[2], 0); |
c896fe29 | 1139 | } else { |
81570a70 | 1140 | tgen_arithr(s, c, args[0], args[2]); |
c896fe29 FB |
1141 | } |
1142 | break; | |
1143 | case INDEX_op_mul_i32: | |
1144 | if (const_args[2]) { | |
1145 | int32_t val; | |
1146 | val = args[2]; | |
1147 | if (val == (int8_t)val) { | |
1148 | tcg_out_modrm(s, 0x6b, args[0], args[0]); | |
1149 | tcg_out8(s, val); | |
1150 | } else { | |
1151 | tcg_out_modrm(s, 0x69, args[0], args[0]); | |
1152 | tcg_out32(s, val); | |
1153 | } | |
1154 | } else { | |
1155 | tcg_out_modrm(s, 0xaf | P_EXT, args[0], args[2]); | |
1156 | } | |
1157 | break; | |
1158 | case INDEX_op_mulu2_i32: | |
1159 | tcg_out_modrm(s, 0xf7, 4, args[3]); | |
1160 | break; | |
1161 | case INDEX_op_div2_i32: | |
1162 | tcg_out_modrm(s, 0xf7, 7, args[4]); | |
1163 | break; | |
1164 | case INDEX_op_divu2_i32: | |
1165 | tcg_out_modrm(s, 0xf7, 6, args[4]); | |
1166 | break; | |
1167 | case INDEX_op_shl_i32: | |
1168 | c = SHIFT_SHL; | |
1169 | gen_shift32: | |
1170 | if (const_args[2]) { | |
f53dba01 | 1171 | tcg_out_shifti(s, c, args[0], args[2]); |
c896fe29 | 1172 | } else { |
f53dba01 | 1173 | tcg_out_modrm(s, OPC_SHIFT_cl, c, args[0]); |
c896fe29 FB |
1174 | } |
1175 | break; | |
1176 | case INDEX_op_shr_i32: | |
1177 | c = SHIFT_SHR; | |
1178 | goto gen_shift32; | |
1179 | case INDEX_op_sar_i32: | |
1180 | c = SHIFT_SAR; | |
1181 | goto gen_shift32; | |
9619376c AJ |
1182 | case INDEX_op_rotl_i32: |
1183 | c = SHIFT_ROL; | |
1184 | goto gen_shift32; | |
1185 | case INDEX_op_rotr_i32: | |
1186 | c = SHIFT_ROR; | |
1187 | goto gen_shift32; | |
1188 | ||
c896fe29 | 1189 | case INDEX_op_add2_i32: |
81570a70 | 1190 | if (const_args[4]) { |
17cf428f | 1191 | tgen_arithi(s, ARITH_ADD, args[0], args[4], 1); |
81570a70 RH |
1192 | } else { |
1193 | tgen_arithr(s, ARITH_ADD, args[0], args[4]); | |
1194 | } | |
1195 | if (const_args[5]) { | |
17cf428f | 1196 | tgen_arithi(s, ARITH_ADC, args[1], args[5], 1); |
81570a70 RH |
1197 | } else { |
1198 | tgen_arithr(s, ARITH_ADC, args[1], args[5]); | |
1199 | } | |
c896fe29 FB |
1200 | break; |
1201 | case INDEX_op_sub2_i32: | |
81570a70 | 1202 | if (const_args[4]) { |
17cf428f | 1203 | tgen_arithi(s, ARITH_SUB, args[0], args[4], 1); |
81570a70 RH |
1204 | } else { |
1205 | tgen_arithr(s, ARITH_SUB, args[0], args[4]); | |
1206 | } | |
1207 | if (const_args[5]) { | |
17cf428f | 1208 | tgen_arithi(s, ARITH_SBB, args[1], args[5], 1); |
81570a70 RH |
1209 | } else { |
1210 | tgen_arithr(s, ARITH_SBB, args[1], args[5]); | |
1211 | } | |
c896fe29 FB |
1212 | break; |
1213 | case INDEX_op_brcond_i32: | |
f75b56c1 RH |
1214 | tcg_out_brcond(s, args[2], args[0], args[1], const_args[1], |
1215 | args[3], 0); | |
c896fe29 FB |
1216 | break; |
1217 | case INDEX_op_brcond2_i32: | |
f75b56c1 | 1218 | tcg_out_brcond2(s, args, const_args, 0); |
c896fe29 FB |
1219 | break; |
1220 | ||
5d40cd63 | 1221 | case INDEX_op_bswap16_i32: |
fcb5dac1 | 1222 | tcg_out_rolw_8(s, args[0]); |
5d40cd63 | 1223 | break; |
66896cb8 | 1224 | case INDEX_op_bswap32_i32: |
fcb5dac1 | 1225 | tcg_out_bswap32(s, args[0]); |
9619376c AJ |
1226 | break; |
1227 | ||
1228 | case INDEX_op_neg_i32: | |
1229 | tcg_out_modrm(s, 0xf7, 3, args[0]); | |
1230 | break; | |
1231 | ||
1232 | case INDEX_op_not_i32: | |
1233 | tcg_out_modrm(s, 0xf7, 2, args[0]); | |
1234 | break; | |
1235 | ||
1236 | case INDEX_op_ext8s_i32: | |
6817c355 | 1237 | tcg_out_ext8s(s, args[0], args[1]); |
9619376c AJ |
1238 | break; |
1239 | case INDEX_op_ext16s_i32: | |
6817c355 | 1240 | tcg_out_ext16s(s, args[0], args[1]); |
9619376c | 1241 | break; |
5f0ce17f | 1242 | case INDEX_op_ext8u_i32: |
55e082a7 | 1243 | tcg_out_ext8u(s, args[0], args[1]); |
5f0ce17f AJ |
1244 | break; |
1245 | case INDEX_op_ext16u_i32: | |
55e082a7 | 1246 | tcg_out_ext16u(s, args[0], args[1]); |
5f0ce17f | 1247 | break; |
9619376c | 1248 | |
1d2699ae RH |
1249 | case INDEX_op_setcond_i32: |
1250 | tcg_out_setcond(s, args[3], args[0], args[1], args[2], const_args[2]); | |
1251 | break; | |
1252 | case INDEX_op_setcond2_i32: | |
1253 | tcg_out_setcond2(s, args, const_args); | |
1254 | break; | |
1255 | ||
c896fe29 FB |
1256 | case INDEX_op_qemu_ld8u: |
1257 | tcg_out_qemu_ld(s, args, 0); | |
1258 | break; | |
1259 | case INDEX_op_qemu_ld8s: | |
1260 | tcg_out_qemu_ld(s, args, 0 | 4); | |
1261 | break; | |
1262 | case INDEX_op_qemu_ld16u: | |
1263 | tcg_out_qemu_ld(s, args, 1); | |
1264 | break; | |
1265 | case INDEX_op_qemu_ld16s: | |
1266 | tcg_out_qemu_ld(s, args, 1 | 4); | |
1267 | break; | |
86feb1c8 | 1268 | case INDEX_op_qemu_ld32: |
c896fe29 FB |
1269 | tcg_out_qemu_ld(s, args, 2); |
1270 | break; | |
1271 | case INDEX_op_qemu_ld64: | |
1272 | tcg_out_qemu_ld(s, args, 3); | |
1273 | break; | |
1274 | ||
1275 | case INDEX_op_qemu_st8: | |
1276 | tcg_out_qemu_st(s, args, 0); | |
1277 | break; | |
1278 | case INDEX_op_qemu_st16: | |
1279 | tcg_out_qemu_st(s, args, 1); | |
1280 | break; | |
1281 | case INDEX_op_qemu_st32: | |
1282 | tcg_out_qemu_st(s, args, 2); | |
1283 | break; | |
1284 | case INDEX_op_qemu_st64: | |
1285 | tcg_out_qemu_st(s, args, 3); | |
1286 | break; | |
1287 | ||
1288 | default: | |
1289 | tcg_abort(); | |
1290 | } | |
1291 | } | |
1292 | ||
1293 | static const TCGTargetOpDef x86_op_defs[] = { | |
1294 | { INDEX_op_exit_tb, { } }, | |
1295 | { INDEX_op_goto_tb, { } }, | |
1296 | { INDEX_op_call, { "ri" } }, | |
1297 | { INDEX_op_jmp, { "ri" } }, | |
1298 | { INDEX_op_br, { } }, | |
1299 | { INDEX_op_mov_i32, { "r", "r" } }, | |
1300 | { INDEX_op_movi_i32, { "r" } }, | |
1301 | { INDEX_op_ld8u_i32, { "r", "r" } }, | |
1302 | { INDEX_op_ld8s_i32, { "r", "r" } }, | |
1303 | { INDEX_op_ld16u_i32, { "r", "r" } }, | |
1304 | { INDEX_op_ld16s_i32, { "r", "r" } }, | |
1305 | { INDEX_op_ld_i32, { "r", "r" } }, | |
1306 | { INDEX_op_st8_i32, { "q", "r" } }, | |
1307 | { INDEX_op_st16_i32, { "r", "r" } }, | |
1308 | { INDEX_op_st_i32, { "r", "r" } }, | |
1309 | ||
1310 | { INDEX_op_add_i32, { "r", "0", "ri" } }, | |
1311 | { INDEX_op_sub_i32, { "r", "0", "ri" } }, | |
1312 | { INDEX_op_mul_i32, { "r", "0", "ri" } }, | |
1313 | { INDEX_op_mulu2_i32, { "a", "d", "a", "r" } }, | |
1314 | { INDEX_op_div2_i32, { "a", "d", "0", "1", "r" } }, | |
1315 | { INDEX_op_divu2_i32, { "a", "d", "0", "1", "r" } }, | |
1316 | { INDEX_op_and_i32, { "r", "0", "ri" } }, | |
1317 | { INDEX_op_or_i32, { "r", "0", "ri" } }, | |
1318 | { INDEX_op_xor_i32, { "r", "0", "ri" } }, | |
1319 | ||
1320 | { INDEX_op_shl_i32, { "r", "0", "ci" } }, | |
1321 | { INDEX_op_shr_i32, { "r", "0", "ci" } }, | |
1322 | { INDEX_op_sar_i32, { "r", "0", "ci" } }, | |
9619376c AJ |
1323 | { INDEX_op_rotl_i32, { "r", "0", "ci" } }, |
1324 | { INDEX_op_rotr_i32, { "r", "0", "ci" } }, | |
c896fe29 FB |
1325 | |
1326 | { INDEX_op_brcond_i32, { "r", "ri" } }, | |
1327 | ||
1328 | { INDEX_op_add2_i32, { "r", "r", "0", "1", "ri", "ri" } }, | |
1329 | { INDEX_op_sub2_i32, { "r", "r", "0", "1", "ri", "ri" } }, | |
1330 | { INDEX_op_brcond2_i32, { "r", "r", "ri", "ri" } }, | |
1331 | ||
5d40cd63 | 1332 | { INDEX_op_bswap16_i32, { "r", "0" } }, |
66896cb8 | 1333 | { INDEX_op_bswap32_i32, { "r", "0" } }, |
9619376c AJ |
1334 | |
1335 | { INDEX_op_neg_i32, { "r", "0" } }, | |
1336 | ||
1337 | { INDEX_op_not_i32, { "r", "0" } }, | |
1338 | ||
1339 | { INDEX_op_ext8s_i32, { "r", "q" } }, | |
1340 | { INDEX_op_ext16s_i32, { "r", "r" } }, | |
55e082a7 RH |
1341 | { INDEX_op_ext8u_i32, { "r", "q" } }, |
1342 | { INDEX_op_ext16u_i32, { "r", "r" } }, | |
9619376c | 1343 | |
1d2699ae RH |
1344 | { INDEX_op_setcond_i32, { "q", "r", "ri" } }, |
1345 | { INDEX_op_setcond2_i32, { "r", "r", "r", "ri", "ri" } }, | |
1346 | ||
c896fe29 FB |
1347 | #if TARGET_LONG_BITS == 32 |
1348 | { INDEX_op_qemu_ld8u, { "r", "L" } }, | |
1349 | { INDEX_op_qemu_ld8s, { "r", "L" } }, | |
1350 | { INDEX_op_qemu_ld16u, { "r", "L" } }, | |
1351 | { INDEX_op_qemu_ld16s, { "r", "L" } }, | |
86feb1c8 | 1352 | { INDEX_op_qemu_ld32, { "r", "L" } }, |
c896fe29 FB |
1353 | { INDEX_op_qemu_ld64, { "r", "r", "L" } }, |
1354 | ||
1355 | { INDEX_op_qemu_st8, { "cb", "L" } }, | |
1356 | { INDEX_op_qemu_st16, { "L", "L" } }, | |
1357 | { INDEX_op_qemu_st32, { "L", "L" } }, | |
1358 | { INDEX_op_qemu_st64, { "L", "L", "L" } }, | |
1359 | #else | |
1360 | { INDEX_op_qemu_ld8u, { "r", "L", "L" } }, | |
1361 | { INDEX_op_qemu_ld8s, { "r", "L", "L" } }, | |
1362 | { INDEX_op_qemu_ld16u, { "r", "L", "L" } }, | |
1363 | { INDEX_op_qemu_ld16s, { "r", "L", "L" } }, | |
86feb1c8 | 1364 | { INDEX_op_qemu_ld32, { "r", "L", "L" } }, |
c896fe29 FB |
1365 | { INDEX_op_qemu_ld64, { "r", "r", "L", "L" } }, |
1366 | ||
1367 | { INDEX_op_qemu_st8, { "cb", "L", "L" } }, | |
1368 | { INDEX_op_qemu_st16, { "L", "L", "L" } }, | |
1369 | { INDEX_op_qemu_st32, { "L", "L", "L" } }, | |
1370 | { INDEX_op_qemu_st64, { "L", "L", "L", "L" } }, | |
1371 | #endif | |
1372 | { -1 }, | |
1373 | }; | |
1374 | ||
b03cce8e FB |
1375 | static int tcg_target_callee_save_regs[] = { |
1376 | /* TCG_REG_EBP, */ /* currently used for the global env, so no | |
1377 | need to save */ | |
1378 | TCG_REG_EBX, | |
1379 | TCG_REG_ESI, | |
1380 | TCG_REG_EDI, | |
1381 | }; | |
1382 | ||
b03cce8e FB |
1383 | /* Generate global QEMU prologue and epilogue code */ |
1384 | void tcg_target_qemu_prologue(TCGContext *s) | |
1385 | { | |
1386 | int i, frame_size, push_size, stack_addend; | |
1387 | ||
1388 | /* TB prologue */ | |
1389 | /* save all callee saved registers */ | |
1390 | for(i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); i++) { | |
1391 | tcg_out_push(s, tcg_target_callee_save_regs[i]); | |
1392 | } | |
1393 | /* reserve some stack space */ | |
1394 | push_size = 4 + ARRAY_SIZE(tcg_target_callee_save_regs) * 4; | |
1395 | frame_size = push_size + TCG_STATIC_CALL_ARGS_SIZE; | |
1396 | frame_size = (frame_size + TCG_TARGET_STACK_ALIGN - 1) & | |
1397 | ~(TCG_TARGET_STACK_ALIGN - 1); | |
1398 | stack_addend = frame_size - push_size; | |
1399 | tcg_out_addi(s, TCG_REG_ESP, -stack_addend); | |
1400 | ||
da441cff | 1401 | tcg_out_modrm(s, 0xff, EXT_JMPN_Ev, TCG_REG_EAX); /* jmp *%eax */ |
b03cce8e FB |
1402 | |
1403 | /* TB epilogue */ | |
1404 | tb_ret_addr = s->code_ptr; | |
1405 | tcg_out_addi(s, TCG_REG_ESP, stack_addend); | |
1406 | for(i = ARRAY_SIZE(tcg_target_callee_save_regs) - 1; i >= 0; i--) { | |
1407 | tcg_out_pop(s, tcg_target_callee_save_regs[i]); | |
1408 | } | |
3c3accc6 | 1409 | tcg_out_opc(s, OPC_RET); |
b03cce8e FB |
1410 | } |
1411 | ||
c896fe29 FB |
1412 | void tcg_target_init(TCGContext *s) |
1413 | { | |
20cb400d | 1414 | #if !defined(CONFIG_USER_ONLY) |
c896fe29 FB |
1415 | /* fail safe */ |
1416 | if ((1 << CPU_TLB_ENTRY_BITS) != sizeof(CPUTLBEntry)) | |
1417 | tcg_abort(); | |
20cb400d | 1418 | #endif |
c896fe29 FB |
1419 | |
1420 | tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, 0xff); | |
4ab50ccf RH |
1421 | |
1422 | tcg_regset_clear(tcg_target_call_clobber_regs); | |
1423 | tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_EAX); | |
1424 | tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_EDX); | |
1425 | tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_ECX); | |
1426 | ||
c896fe29 FB |
1427 | tcg_regset_clear(s->reserved_regs); |
1428 | tcg_regset_set_reg(s->reserved_regs, TCG_REG_ESP); | |
1429 | ||
1430 | tcg_add_target_add_op_defs(x86_op_defs); | |
1431 | } |