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 */ 24 25#include "../tcg-pool.c.inc" 26 27#ifdef CONFIG_DEBUG_TCG 28static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { 29#if TCG_TARGET_REG_BITS == 64 30 "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi", 31#else 32 "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi", 33#endif 34 "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15", 35 "%xmm0", "%xmm1", "%xmm2", "%xmm3", "%xmm4", "%xmm5", "%xmm6", "%xmm7", 36#if TCG_TARGET_REG_BITS == 64 37 "%xmm8", "%xmm9", "%xmm10", "%xmm11", 38 "%xmm12", "%xmm13", "%xmm14", "%xmm15", 39#endif 40}; 41#endif 42 43static const int tcg_target_reg_alloc_order[] = { 44#if TCG_TARGET_REG_BITS == 64 45 TCG_REG_RBP, 46 TCG_REG_RBX, 47 TCG_REG_R12, 48 TCG_REG_R13, 49 TCG_REG_R14, 50 TCG_REG_R15, 51 TCG_REG_R10, 52 TCG_REG_R11, 53 TCG_REG_R9, 54 TCG_REG_R8, 55 TCG_REG_RCX, 56 TCG_REG_RDX, 57 TCG_REG_RSI, 58 TCG_REG_RDI, 59 TCG_REG_RAX, 60#else 61 TCG_REG_EBX, 62 TCG_REG_ESI, 63 TCG_REG_EDI, 64 TCG_REG_EBP, 65 TCG_REG_ECX, 66 TCG_REG_EDX, 67 TCG_REG_EAX, 68#endif 69 TCG_REG_XMM0, 70 TCG_REG_XMM1, 71 TCG_REG_XMM2, 72 TCG_REG_XMM3, 73 TCG_REG_XMM4, 74 TCG_REG_XMM5, 75#ifndef _WIN64 76 /* The Win64 ABI has xmm6-xmm15 as caller-saves, and we do not save 77 any of them. Therefore only allow xmm0-xmm5 to be allocated. */ 78 TCG_REG_XMM6, 79 TCG_REG_XMM7, 80#if TCG_TARGET_REG_BITS == 64 81 TCG_REG_XMM8, 82 TCG_REG_XMM9, 83 TCG_REG_XMM10, 84 TCG_REG_XMM11, 85 TCG_REG_XMM12, 86 TCG_REG_XMM13, 87 TCG_REG_XMM14, 88 TCG_REG_XMM15, 89#endif 90#endif 91}; 92 93static const int tcg_target_call_iarg_regs[] = { 94#if TCG_TARGET_REG_BITS == 64 95#if defined(_WIN64) 96 TCG_REG_RCX, 97 TCG_REG_RDX, 98#else 99 TCG_REG_RDI, 100 TCG_REG_RSI, 101 TCG_REG_RDX, 102 TCG_REG_RCX, 103#endif 104 TCG_REG_R8, 105 TCG_REG_R9, 106#else 107 /* 32 bit mode uses stack based calling convention (GCC default). */ 108#endif 109}; 110 111static const int tcg_target_call_oarg_regs[] = { 112 TCG_REG_EAX, 113#if TCG_TARGET_REG_BITS == 32 114 TCG_REG_EDX 115#endif 116}; 117 118/* Constants we accept. */ 119#define TCG_CT_CONST_S32 0x100 120#define TCG_CT_CONST_U32 0x200 121#define TCG_CT_CONST_I32 0x400 122#define TCG_CT_CONST_WSZ 0x800 123 124/* Registers used with L constraint, which are the first argument 125 registers on x86_64, and two random call clobbered registers on 126 i386. */ 127#if TCG_TARGET_REG_BITS == 64 128# define TCG_REG_L0 tcg_target_call_iarg_regs[0] 129# define TCG_REG_L1 tcg_target_call_iarg_regs[1] 130#else 131# define TCG_REG_L0 TCG_REG_EAX 132# define TCG_REG_L1 TCG_REG_EDX 133#endif 134 135#define ALL_BYTEH_REGS 0x0000000fu 136#if TCG_TARGET_REG_BITS == 64 137# define ALL_GENERAL_REGS 0x0000ffffu 138# define ALL_VECTOR_REGS 0xffff0000u 139# define ALL_BYTEL_REGS ALL_GENERAL_REGS 140#else 141# define ALL_GENERAL_REGS 0x000000ffu 142# define ALL_VECTOR_REGS 0x00ff0000u 143# define ALL_BYTEL_REGS ALL_BYTEH_REGS 144#endif 145#ifdef CONFIG_SOFTMMU 146# define SOFTMMU_RESERVE_REGS ((1 << TCG_REG_L0) | (1 << TCG_REG_L1)) 147#else 148# define SOFTMMU_RESERVE_REGS 0 149#endif 150 151/* The host compiler should supply <cpuid.h> to enable runtime features 152 detection, as we're not going to go so far as our own inline assembly. 153 If not available, default values will be assumed. */ 154#if defined(CONFIG_CPUID_H) 155#include "qemu/cpuid.h" 156#endif 157 158/* For 64-bit, we always know that CMOV is available. */ 159#if TCG_TARGET_REG_BITS == 64 160# define have_cmov 1 161#elif defined(CONFIG_CPUID_H) 162static bool have_cmov; 163#else 164# define have_cmov 0 165#endif 166 167/* We need these symbols in tcg-target.h, and we can't properly conditionalize 168 it there. Therefore we always define the variable. */ 169bool have_bmi1; 170bool have_popcnt; 171bool have_avx1; 172bool have_avx2; 173bool have_movbe; 174 175#ifdef CONFIG_CPUID_H 176static bool have_bmi2; 177static bool have_lzcnt; 178#else 179# define have_bmi2 0 180# define have_lzcnt 0 181#endif 182 183static const tcg_insn_unit *tb_ret_addr; 184 185static bool patch_reloc(tcg_insn_unit *code_ptr, int type, 186 intptr_t value, intptr_t addend) 187{ 188 value += addend; 189 switch(type) { 190 case R_386_PC32: 191 value -= (uintptr_t)tcg_splitwx_to_rx(code_ptr); 192 if (value != (int32_t)value) { 193 return false; 194 } 195 /* FALLTHRU */ 196 case R_386_32: 197 tcg_patch32(code_ptr, value); 198 break; 199 case R_386_PC8: 200 value -= (uintptr_t)tcg_splitwx_to_rx(code_ptr); 201 if (value != (int8_t)value) { 202 return false; 203 } 204 tcg_patch8(code_ptr, value); 205 break; 206 default: 207 tcg_abort(); 208 } 209 return true; 210} 211 212/* test if a constant matches the constraint */ 213static inline int tcg_target_const_match(tcg_target_long val, TCGType type, 214 const TCGArgConstraint *arg_ct) 215{ 216 int ct = arg_ct->ct; 217 if (ct & TCG_CT_CONST) { 218 return 1; 219 } 220 if (type == TCG_TYPE_I32) { 221 if (ct & (TCG_CT_CONST_S32 | TCG_CT_CONST_U32 | TCG_CT_CONST_I32)) { 222 return 1; 223 } 224 } else { 225 if ((ct & TCG_CT_CONST_S32) && val == (int32_t)val) { 226 return 1; 227 } 228 if ((ct & TCG_CT_CONST_U32) && val == (uint32_t)val) { 229 return 1; 230 } 231 if ((ct & TCG_CT_CONST_I32) && ~val == (int32_t)~val) { 232 return 1; 233 } 234 } 235 if ((ct & TCG_CT_CONST_WSZ) && val == (type == TCG_TYPE_I32 ? 32 : 64)) { 236 return 1; 237 } 238 return 0; 239} 240 241# define LOWREGMASK(x) ((x) & 7) 242 243#define P_EXT 0x100 /* 0x0f opcode prefix */ 244#define P_EXT38 0x200 /* 0x0f 0x38 opcode prefix */ 245#define P_DATA16 0x400 /* 0x66 opcode prefix */ 246#if TCG_TARGET_REG_BITS == 64 247# define P_REXW 0x1000 /* Set REX.W = 1 */ 248# define P_REXB_R 0x2000 /* REG field as byte register */ 249# define P_REXB_RM 0x4000 /* R/M field as byte register */ 250# define P_GS 0x8000 /* gs segment override */ 251#else 252# define P_REXW 0 253# define P_REXB_R 0 254# define P_REXB_RM 0 255# define P_GS 0 256#endif 257#define P_EXT3A 0x10000 /* 0x0f 0x3a opcode prefix */ 258#define P_SIMDF3 0x20000 /* 0xf3 opcode prefix */ 259#define P_SIMDF2 0x40000 /* 0xf2 opcode prefix */ 260#define P_VEXL 0x80000 /* Set VEX.L = 1 */ 261 262#define OPC_ARITH_EvIz (0x81) 263#define OPC_ARITH_EvIb (0x83) 264#define OPC_ARITH_GvEv (0x03) /* ... plus (ARITH_FOO << 3) */ 265#define OPC_ANDN (0xf2 | P_EXT38) 266#define OPC_ADD_GvEv (OPC_ARITH_GvEv | (ARITH_ADD << 3)) 267#define OPC_AND_GvEv (OPC_ARITH_GvEv | (ARITH_AND << 3)) 268#define OPC_BLENDPS (0x0c | P_EXT3A | P_DATA16) 269#define OPC_BSF (0xbc | P_EXT) 270#define OPC_BSR (0xbd | P_EXT) 271#define OPC_BSWAP (0xc8 | P_EXT) 272#define OPC_CALL_Jz (0xe8) 273#define OPC_CMOVCC (0x40 | P_EXT) /* ... plus condition code */ 274#define OPC_CMP_GvEv (OPC_ARITH_GvEv | (ARITH_CMP << 3)) 275#define OPC_DEC_r32 (0x48) 276#define OPC_IMUL_GvEv (0xaf | P_EXT) 277#define OPC_IMUL_GvEvIb (0x6b) 278#define OPC_IMUL_GvEvIz (0x69) 279#define OPC_INC_r32 (0x40) 280#define OPC_JCC_long (0x80 | P_EXT) /* ... plus condition code */ 281#define OPC_JCC_short (0x70) /* ... plus condition code */ 282#define OPC_JMP_long (0xe9) 283#define OPC_JMP_short (0xeb) 284#define OPC_LEA (0x8d) 285#define OPC_LZCNT (0xbd | P_EXT | P_SIMDF3) 286#define OPC_MOVB_EvGv (0x88) /* stores, more or less */ 287#define OPC_MOVL_EvGv (0x89) /* stores, more or less */ 288#define OPC_MOVL_GvEv (0x8b) /* loads, more or less */ 289#define OPC_MOVB_EvIz (0xc6) 290#define OPC_MOVL_EvIz (0xc7) 291#define OPC_MOVL_Iv (0xb8) 292#define OPC_MOVBE_GyMy (0xf0 | P_EXT38) 293#define OPC_MOVBE_MyGy (0xf1 | P_EXT38) 294#define OPC_MOVD_VyEy (0x6e | P_EXT | P_DATA16) 295#define OPC_MOVD_EyVy (0x7e | P_EXT | P_DATA16) 296#define OPC_MOVDDUP (0x12 | P_EXT | P_SIMDF2) 297#define OPC_MOVDQA_VxWx (0x6f | P_EXT | P_DATA16) 298#define OPC_MOVDQA_WxVx (0x7f | P_EXT | P_DATA16) 299#define OPC_MOVDQU_VxWx (0x6f | P_EXT | P_SIMDF3) 300#define OPC_MOVDQU_WxVx (0x7f | P_EXT | P_SIMDF3) 301#define OPC_MOVQ_VqWq (0x7e | P_EXT | P_SIMDF3) 302#define OPC_MOVQ_WqVq (0xd6 | P_EXT | P_DATA16) 303#define OPC_MOVSBL (0xbe | P_EXT) 304#define OPC_MOVSWL (0xbf | P_EXT) 305#define OPC_MOVSLQ (0x63 | P_REXW) 306#define OPC_MOVZBL (0xb6 | P_EXT) 307#define OPC_MOVZWL (0xb7 | P_EXT) 308#define OPC_PABSB (0x1c | P_EXT38 | P_DATA16) 309#define OPC_PABSW (0x1d | P_EXT38 | P_DATA16) 310#define OPC_PABSD (0x1e | P_EXT38 | P_DATA16) 311#define OPC_PACKSSDW (0x6b | P_EXT | P_DATA16) 312#define OPC_PACKSSWB (0x63 | P_EXT | P_DATA16) 313#define OPC_PACKUSDW (0x2b | P_EXT38 | P_DATA16) 314#define OPC_PACKUSWB (0x67 | P_EXT | P_DATA16) 315#define OPC_PADDB (0xfc | P_EXT | P_DATA16) 316#define OPC_PADDW (0xfd | P_EXT | P_DATA16) 317#define OPC_PADDD (0xfe | P_EXT | P_DATA16) 318#define OPC_PADDQ (0xd4 | P_EXT | P_DATA16) 319#define OPC_PADDSB (0xec | P_EXT | P_DATA16) 320#define OPC_PADDSW (0xed | P_EXT | P_DATA16) 321#define OPC_PADDUB (0xdc | P_EXT | P_DATA16) 322#define OPC_PADDUW (0xdd | P_EXT | P_DATA16) 323#define OPC_PAND (0xdb | P_EXT | P_DATA16) 324#define OPC_PANDN (0xdf | P_EXT | P_DATA16) 325#define OPC_PBLENDW (0x0e | P_EXT3A | P_DATA16) 326#define OPC_PCMPEQB (0x74 | P_EXT | P_DATA16) 327#define OPC_PCMPEQW (0x75 | P_EXT | P_DATA16) 328#define OPC_PCMPEQD (0x76 | P_EXT | P_DATA16) 329#define OPC_PCMPEQQ (0x29 | P_EXT38 | P_DATA16) 330#define OPC_PCMPGTB (0x64 | P_EXT | P_DATA16) 331#define OPC_PCMPGTW (0x65 | P_EXT | P_DATA16) 332#define OPC_PCMPGTD (0x66 | P_EXT | P_DATA16) 333#define OPC_PCMPGTQ (0x37 | P_EXT38 | P_DATA16) 334#define OPC_PMAXSB (0x3c | P_EXT38 | P_DATA16) 335#define OPC_PMAXSW (0xee | P_EXT | P_DATA16) 336#define OPC_PMAXSD (0x3d | P_EXT38 | P_DATA16) 337#define OPC_PMAXUB (0xde | P_EXT | P_DATA16) 338#define OPC_PMAXUW (0x3e | P_EXT38 | P_DATA16) 339#define OPC_PMAXUD (0x3f | P_EXT38 | P_DATA16) 340#define OPC_PMINSB (0x38 | P_EXT38 | P_DATA16) 341#define OPC_PMINSW (0xea | P_EXT | P_DATA16) 342#define OPC_PMINSD (0x39 | P_EXT38 | P_DATA16) 343#define OPC_PMINUB (0xda | P_EXT | P_DATA16) 344#define OPC_PMINUW (0x3a | P_EXT38 | P_DATA16) 345#define OPC_PMINUD (0x3b | P_EXT38 | P_DATA16) 346#define OPC_PMOVSXBW (0x20 | P_EXT38 | P_DATA16) 347#define OPC_PMOVSXWD (0x23 | P_EXT38 | P_DATA16) 348#define OPC_PMOVSXDQ (0x25 | P_EXT38 | P_DATA16) 349#define OPC_PMOVZXBW (0x30 | P_EXT38 | P_DATA16) 350#define OPC_PMOVZXWD (0x33 | P_EXT38 | P_DATA16) 351#define OPC_PMOVZXDQ (0x35 | P_EXT38 | P_DATA16) 352#define OPC_PMULLW (0xd5 | P_EXT | P_DATA16) 353#define OPC_PMULLD (0x40 | P_EXT38 | P_DATA16) 354#define OPC_POR (0xeb | P_EXT | P_DATA16) 355#define OPC_PSHUFB (0x00 | P_EXT38 | P_DATA16) 356#define OPC_PSHUFD (0x70 | P_EXT | P_DATA16) 357#define OPC_PSHUFLW (0x70 | P_EXT | P_SIMDF2) 358#define OPC_PSHUFHW (0x70 | P_EXT | P_SIMDF3) 359#define OPC_PSHIFTW_Ib (0x71 | P_EXT | P_DATA16) /* /2 /6 /4 */ 360#define OPC_PSHIFTD_Ib (0x72 | P_EXT | P_DATA16) /* /2 /6 /4 */ 361#define OPC_PSHIFTQ_Ib (0x73 | P_EXT | P_DATA16) /* /2 /6 /4 */ 362#define OPC_PSLLW (0xf1 | P_EXT | P_DATA16) 363#define OPC_PSLLD (0xf2 | P_EXT | P_DATA16) 364#define OPC_PSLLQ (0xf3 | P_EXT | P_DATA16) 365#define OPC_PSRAW (0xe1 | P_EXT | P_DATA16) 366#define OPC_PSRAD (0xe2 | P_EXT | P_DATA16) 367#define OPC_PSRLW (0xd1 | P_EXT | P_DATA16) 368#define OPC_PSRLD (0xd2 | P_EXT | P_DATA16) 369#define OPC_PSRLQ (0xd3 | P_EXT | P_DATA16) 370#define OPC_PSUBB (0xf8 | P_EXT | P_DATA16) 371#define OPC_PSUBW (0xf9 | P_EXT | P_DATA16) 372#define OPC_PSUBD (0xfa | P_EXT | P_DATA16) 373#define OPC_PSUBQ (0xfb | P_EXT | P_DATA16) 374#define OPC_PSUBSB (0xe8 | P_EXT | P_DATA16) 375#define OPC_PSUBSW (0xe9 | P_EXT | P_DATA16) 376#define OPC_PSUBUB (0xd8 | P_EXT | P_DATA16) 377#define OPC_PSUBUW (0xd9 | P_EXT | P_DATA16) 378#define OPC_PUNPCKLBW (0x60 | P_EXT | P_DATA16) 379#define OPC_PUNPCKLWD (0x61 | P_EXT | P_DATA16) 380#define OPC_PUNPCKLDQ (0x62 | P_EXT | P_DATA16) 381#define OPC_PUNPCKLQDQ (0x6c | P_EXT | P_DATA16) 382#define OPC_PUNPCKHBW (0x68 | P_EXT | P_DATA16) 383#define OPC_PUNPCKHWD (0x69 | P_EXT | P_DATA16) 384#define OPC_PUNPCKHDQ (0x6a | P_EXT | P_DATA16) 385#define OPC_PUNPCKHQDQ (0x6d | P_EXT | P_DATA16) 386#define OPC_PXOR (0xef | P_EXT | P_DATA16) 387#define OPC_POP_r32 (0x58) 388#define OPC_POPCNT (0xb8 | P_EXT | P_SIMDF3) 389#define OPC_PUSH_r32 (0x50) 390#define OPC_PUSH_Iv (0x68) 391#define OPC_PUSH_Ib (0x6a) 392#define OPC_RET (0xc3) 393#define OPC_SETCC (0x90 | P_EXT | P_REXB_RM) /* ... plus cc */ 394#define OPC_SHIFT_1 (0xd1) 395#define OPC_SHIFT_Ib (0xc1) 396#define OPC_SHIFT_cl (0xd3) 397#define OPC_SARX (0xf7 | P_EXT38 | P_SIMDF3) 398#define OPC_SHUFPS (0xc6 | P_EXT) 399#define OPC_SHLX (0xf7 | P_EXT38 | P_DATA16) 400#define OPC_SHRX (0xf7 | P_EXT38 | P_SIMDF2) 401#define OPC_SHRD_Ib (0xac | P_EXT) 402#define OPC_TESTL (0x85) 403#define OPC_TZCNT (0xbc | P_EXT | P_SIMDF3) 404#define OPC_UD2 (0x0b | P_EXT) 405#define OPC_VPBLENDD (0x02 | P_EXT3A | P_DATA16) 406#define OPC_VPBLENDVB (0x4c | P_EXT3A | P_DATA16) 407#define OPC_VPINSRB (0x20 | P_EXT3A | P_DATA16) 408#define OPC_VPINSRW (0xc4 | P_EXT | P_DATA16) 409#define OPC_VBROADCASTSS (0x18 | P_EXT38 | P_DATA16) 410#define OPC_VBROADCASTSD (0x19 | P_EXT38 | P_DATA16) 411#define OPC_VPBROADCASTB (0x78 | P_EXT38 | P_DATA16) 412#define OPC_VPBROADCASTW (0x79 | P_EXT38 | P_DATA16) 413#define OPC_VPBROADCASTD (0x58 | P_EXT38 | P_DATA16) 414#define OPC_VPBROADCASTQ (0x59 | P_EXT38 | P_DATA16) 415#define OPC_VPERMQ (0x00 | P_EXT3A | P_DATA16 | P_REXW) 416#define OPC_VPERM2I128 (0x46 | P_EXT3A | P_DATA16 | P_VEXL) 417#define OPC_VPSLLVD (0x47 | P_EXT38 | P_DATA16) 418#define OPC_VPSLLVQ (0x47 | P_EXT38 | P_DATA16 | P_REXW) 419#define OPC_VPSRAVD (0x46 | P_EXT38 | P_DATA16) 420#define OPC_VPSRLVD (0x45 | P_EXT38 | P_DATA16) 421#define OPC_VPSRLVQ (0x45 | P_EXT38 | P_DATA16 | P_REXW) 422#define OPC_VZEROUPPER (0x77 | P_EXT) 423#define OPC_XCHG_ax_r32 (0x90) 424 425#define OPC_GRP3_Ev (0xf7) 426#define OPC_GRP5 (0xff) 427#define OPC_GRP14 (0x73 | P_EXT | P_DATA16) 428 429/* Group 1 opcode extensions for 0x80-0x83. 430 These are also used as modifiers for OPC_ARITH. */ 431#define ARITH_ADD 0 432#define ARITH_OR 1 433#define ARITH_ADC 2 434#define ARITH_SBB 3 435#define ARITH_AND 4 436#define ARITH_SUB 5 437#define ARITH_XOR 6 438#define ARITH_CMP 7 439 440/* Group 2 opcode extensions for 0xc0, 0xc1, 0xd0-0xd3. */ 441#define SHIFT_ROL 0 442#define SHIFT_ROR 1 443#define SHIFT_SHL 4 444#define SHIFT_SHR 5 445#define SHIFT_SAR 7 446 447/* Group 3 opcode extensions for 0xf6, 0xf7. To be used with OPC_GRP3. */ 448#define EXT3_NOT 2 449#define EXT3_NEG 3 450#define EXT3_MUL 4 451#define EXT3_IMUL 5 452#define EXT3_DIV 6 453#define EXT3_IDIV 7 454 455/* Group 5 opcode extensions for 0xff. To be used with OPC_GRP5. */ 456#define EXT5_INC_Ev 0 457#define EXT5_DEC_Ev 1 458#define EXT5_CALLN_Ev 2 459#define EXT5_JMPN_Ev 4 460 461/* Condition codes to be added to OPC_JCC_{long,short}. */ 462#define JCC_JMP (-1) 463#define JCC_JO 0x0 464#define JCC_JNO 0x1 465#define JCC_JB 0x2 466#define JCC_JAE 0x3 467#define JCC_JE 0x4 468#define JCC_JNE 0x5 469#define JCC_JBE 0x6 470#define JCC_JA 0x7 471#define JCC_JS 0x8 472#define JCC_JNS 0x9 473#define JCC_JP 0xa 474#define JCC_JNP 0xb 475#define JCC_JL 0xc 476#define JCC_JGE 0xd 477#define JCC_JLE 0xe 478#define JCC_JG 0xf 479 480static const uint8_t tcg_cond_to_jcc[] = { 481 [TCG_COND_EQ] = JCC_JE, 482 [TCG_COND_NE] = JCC_JNE, 483 [TCG_COND_LT] = JCC_JL, 484 [TCG_COND_GE] = JCC_JGE, 485 [TCG_COND_LE] = JCC_JLE, 486 [TCG_COND_GT] = JCC_JG, 487 [TCG_COND_LTU] = JCC_JB, 488 [TCG_COND_GEU] = JCC_JAE, 489 [TCG_COND_LEU] = JCC_JBE, 490 [TCG_COND_GTU] = JCC_JA, 491}; 492 493#if TCG_TARGET_REG_BITS == 64 494static void tcg_out_opc(TCGContext *s, int opc, int r, int rm, int x) 495{ 496 int rex; 497 498 if (opc & P_GS) { 499 tcg_out8(s, 0x65); 500 } 501 if (opc & P_DATA16) { 502 /* We should never be asking for both 16 and 64-bit operation. */ 503 tcg_debug_assert((opc & P_REXW) == 0); 504 tcg_out8(s, 0x66); 505 } 506 if (opc & P_SIMDF3) { 507 tcg_out8(s, 0xf3); 508 } else if (opc & P_SIMDF2) { 509 tcg_out8(s, 0xf2); 510 } 511 512 rex = 0; 513 rex |= (opc & P_REXW) ? 0x8 : 0x0; /* REX.W */ 514 rex |= (r & 8) >> 1; /* REX.R */ 515 rex |= (x & 8) >> 2; /* REX.X */ 516 rex |= (rm & 8) >> 3; /* REX.B */ 517 518 /* P_REXB_{R,RM} indicates that the given register is the low byte. 519 For %[abcd]l we need no REX prefix, but for %{si,di,bp,sp}l we do, 520 as otherwise the encoding indicates %[abcd]h. Note that the values 521 that are ORed in merely indicate that the REX byte must be present; 522 those bits get discarded in output. */ 523 rex |= opc & (r >= 4 ? P_REXB_R : 0); 524 rex |= opc & (rm >= 4 ? P_REXB_RM : 0); 525 526 if (rex) { 527 tcg_out8(s, (uint8_t)(rex | 0x40)); 528 } 529 530 if (opc & (P_EXT | P_EXT38 | P_EXT3A)) { 531 tcg_out8(s, 0x0f); 532 if (opc & P_EXT38) { 533 tcg_out8(s, 0x38); 534 } else if (opc & P_EXT3A) { 535 tcg_out8(s, 0x3a); 536 } 537 } 538 539 tcg_out8(s, opc); 540} 541#else 542static void tcg_out_opc(TCGContext *s, int opc) 543{ 544 if (opc & P_DATA16) { 545 tcg_out8(s, 0x66); 546 } 547 if (opc & P_SIMDF3) { 548 tcg_out8(s, 0xf3); 549 } else if (opc & P_SIMDF2) { 550 tcg_out8(s, 0xf2); 551 } 552 if (opc & (P_EXT | P_EXT38 | P_EXT3A)) { 553 tcg_out8(s, 0x0f); 554 if (opc & P_EXT38) { 555 tcg_out8(s, 0x38); 556 } else if (opc & P_EXT3A) { 557 tcg_out8(s, 0x3a); 558 } 559 } 560 tcg_out8(s, opc); 561} 562/* Discard the register arguments to tcg_out_opc early, so as not to penalize 563 the 32-bit compilation paths. This method works with all versions of gcc, 564 whereas relying on optimization may not be able to exclude them. */ 565#define tcg_out_opc(s, opc, r, rm, x) (tcg_out_opc)(s, opc) 566#endif 567 568static void tcg_out_modrm(TCGContext *s, int opc, int r, int rm) 569{ 570 tcg_out_opc(s, opc, r, rm, 0); 571 tcg_out8(s, 0xc0 | (LOWREGMASK(r) << 3) | LOWREGMASK(rm)); 572} 573 574static void tcg_out_vex_opc(TCGContext *s, int opc, int r, int v, 575 int rm, int index) 576{ 577 int tmp; 578 579 /* Use the two byte form if possible, which cannot encode 580 VEX.W, VEX.B, VEX.X, or an m-mmmm field other than P_EXT. */ 581 if ((opc & (P_EXT | P_EXT38 | P_EXT3A | P_REXW)) == P_EXT 582 && ((rm | index) & 8) == 0) { 583 /* Two byte VEX prefix. */ 584 tcg_out8(s, 0xc5); 585 586 tmp = (r & 8 ? 0 : 0x80); /* VEX.R */ 587 } else { 588 /* Three byte VEX prefix. */ 589 tcg_out8(s, 0xc4); 590 591 /* VEX.m-mmmm */ 592 if (opc & P_EXT3A) { 593 tmp = 3; 594 } else if (opc & P_EXT38) { 595 tmp = 2; 596 } else if (opc & P_EXT) { 597 tmp = 1; 598 } else { 599 g_assert_not_reached(); 600 } 601 tmp |= (r & 8 ? 0 : 0x80); /* VEX.R */ 602 tmp |= (index & 8 ? 0 : 0x40); /* VEX.X */ 603 tmp |= (rm & 8 ? 0 : 0x20); /* VEX.B */ 604 tcg_out8(s, tmp); 605 606 tmp = (opc & P_REXW ? 0x80 : 0); /* VEX.W */ 607 } 608 609 tmp |= (opc & P_VEXL ? 0x04 : 0); /* VEX.L */ 610 /* VEX.pp */ 611 if (opc & P_DATA16) { 612 tmp |= 1; /* 0x66 */ 613 } else if (opc & P_SIMDF3) { 614 tmp |= 2; /* 0xf3 */ 615 } else if (opc & P_SIMDF2) { 616 tmp |= 3; /* 0xf2 */ 617 } 618 tmp |= (~v & 15) << 3; /* VEX.vvvv */ 619 tcg_out8(s, tmp); 620 tcg_out8(s, opc); 621} 622 623static void tcg_out_vex_modrm(TCGContext *s, int opc, int r, int v, int rm) 624{ 625 tcg_out_vex_opc(s, opc, r, v, rm, 0); 626 tcg_out8(s, 0xc0 | (LOWREGMASK(r) << 3) | LOWREGMASK(rm)); 627} 628 629/* Output an opcode with a full "rm + (index<<shift) + offset" address mode. 630 We handle either RM and INDEX missing with a negative value. In 64-bit 631 mode for absolute addresses, ~RM is the size of the immediate operand 632 that will follow the instruction. */ 633 634static void tcg_out_sib_offset(TCGContext *s, int r, int rm, int index, 635 int shift, intptr_t offset) 636{ 637 int mod, len; 638 639 if (index < 0 && rm < 0) { 640 if (TCG_TARGET_REG_BITS == 64) { 641 /* Try for a rip-relative addressing mode. This has replaced 642 the 32-bit-mode absolute addressing encoding. */ 643 intptr_t pc = (intptr_t)s->code_ptr + 5 + ~rm; 644 intptr_t disp = offset - pc; 645 if (disp == (int32_t)disp) { 646 tcg_out8(s, (LOWREGMASK(r) << 3) | 5); 647 tcg_out32(s, disp); 648 return; 649 } 650 651 /* Try for an absolute address encoding. This requires the 652 use of the MODRM+SIB encoding and is therefore larger than 653 rip-relative addressing. */ 654 if (offset == (int32_t)offset) { 655 tcg_out8(s, (LOWREGMASK(r) << 3) | 4); 656 tcg_out8(s, (4 << 3) | 5); 657 tcg_out32(s, offset); 658 return; 659 } 660 661 /* ??? The memory isn't directly addressable. */ 662 g_assert_not_reached(); 663 } else { 664 /* Absolute address. */ 665 tcg_out8(s, (r << 3) | 5); 666 tcg_out32(s, offset); 667 return; 668 } 669 } 670 671 /* Find the length of the immediate addend. Note that the encoding 672 that would be used for (%ebp) indicates absolute addressing. */ 673 if (rm < 0) { 674 mod = 0, len = 4, rm = 5; 675 } else if (offset == 0 && LOWREGMASK(rm) != TCG_REG_EBP) { 676 mod = 0, len = 0; 677 } else if (offset == (int8_t)offset) { 678 mod = 0x40, len = 1; 679 } else { 680 mod = 0x80, len = 4; 681 } 682 683 /* Use a single byte MODRM format if possible. Note that the encoding 684 that would be used for %esp is the escape to the two byte form. */ 685 if (index < 0 && LOWREGMASK(rm) != TCG_REG_ESP) { 686 /* Single byte MODRM format. */ 687 tcg_out8(s, mod | (LOWREGMASK(r) << 3) | LOWREGMASK(rm)); 688 } else { 689 /* Two byte MODRM+SIB format. */ 690 691 /* Note that the encoding that would place %esp into the index 692 field indicates no index register. In 64-bit mode, the REX.X 693 bit counts, so %r12 can be used as the index. */ 694 if (index < 0) { 695 index = 4; 696 } else { 697 tcg_debug_assert(index != TCG_REG_ESP); 698 } 699 700 tcg_out8(s, mod | (LOWREGMASK(r) << 3) | 4); 701 tcg_out8(s, (shift << 6) | (LOWREGMASK(index) << 3) | LOWREGMASK(rm)); 702 } 703 704 if (len == 1) { 705 tcg_out8(s, offset); 706 } else if (len == 4) { 707 tcg_out32(s, offset); 708 } 709} 710 711static void tcg_out_modrm_sib_offset(TCGContext *s, int opc, int r, int rm, 712 int index, int shift, intptr_t offset) 713{ 714 tcg_out_opc(s, opc, r, rm < 0 ? 0 : rm, index < 0 ? 0 : index); 715 tcg_out_sib_offset(s, r, rm, index, shift, offset); 716} 717 718static void tcg_out_vex_modrm_sib_offset(TCGContext *s, int opc, int r, int v, 719 int rm, int index, int shift, 720 intptr_t offset) 721{ 722 tcg_out_vex_opc(s, opc, r, v, rm < 0 ? 0 : rm, index < 0 ? 0 : index); 723 tcg_out_sib_offset(s, r, rm, index, shift, offset); 724} 725 726/* A simplification of the above with no index or shift. */ 727static inline void tcg_out_modrm_offset(TCGContext *s, int opc, int r, 728 int rm, intptr_t offset) 729{ 730 tcg_out_modrm_sib_offset(s, opc, r, rm, -1, 0, offset); 731} 732 733static inline void tcg_out_vex_modrm_offset(TCGContext *s, int opc, int r, 734 int v, int rm, intptr_t offset) 735{ 736 tcg_out_vex_modrm_sib_offset(s, opc, r, v, rm, -1, 0, offset); 737} 738 739/* Output an opcode with an expected reference to the constant pool. */ 740static inline void tcg_out_modrm_pool(TCGContext *s, int opc, int r) 741{ 742 tcg_out_opc(s, opc, r, 0, 0); 743 /* Absolute for 32-bit, pc-relative for 64-bit. */ 744 tcg_out8(s, LOWREGMASK(r) << 3 | 5); 745 tcg_out32(s, 0); 746} 747 748/* Output an opcode with an expected reference to the constant pool. */ 749static inline void tcg_out_vex_modrm_pool(TCGContext *s, int opc, int r) 750{ 751 tcg_out_vex_opc(s, opc, r, 0, 0, 0); 752 /* Absolute for 32-bit, pc-relative for 64-bit. */ 753 tcg_out8(s, LOWREGMASK(r) << 3 | 5); 754 tcg_out32(s, 0); 755} 756 757/* Generate dest op= src. Uses the same ARITH_* codes as tgen_arithi. */ 758static inline void tgen_arithr(TCGContext *s, int subop, int dest, int src) 759{ 760 /* Propagate an opcode prefix, such as P_REXW. */ 761 int ext = subop & ~0x7; 762 subop &= 0x7; 763 764 tcg_out_modrm(s, OPC_ARITH_GvEv + (subop << 3) + ext, dest, src); 765} 766 767static bool tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg) 768{ 769 int rexw = 0; 770 771 if (arg == ret) { 772 return true; 773 } 774 switch (type) { 775 case TCG_TYPE_I64: 776 rexw = P_REXW; 777 /* fallthru */ 778 case TCG_TYPE_I32: 779 if (ret < 16) { 780 if (arg < 16) { 781 tcg_out_modrm(s, OPC_MOVL_GvEv + rexw, ret, arg); 782 } else { 783 tcg_out_vex_modrm(s, OPC_MOVD_EyVy + rexw, arg, 0, ret); 784 } 785 } else { 786 if (arg < 16) { 787 tcg_out_vex_modrm(s, OPC_MOVD_VyEy + rexw, ret, 0, arg); 788 } else { 789 tcg_out_vex_modrm(s, OPC_MOVQ_VqWq, ret, 0, arg); 790 } 791 } 792 break; 793 794 case TCG_TYPE_V64: 795 tcg_debug_assert(ret >= 16 && arg >= 16); 796 tcg_out_vex_modrm(s, OPC_MOVQ_VqWq, ret, 0, arg); 797 break; 798 case TCG_TYPE_V128: 799 tcg_debug_assert(ret >= 16 && arg >= 16); 800 tcg_out_vex_modrm(s, OPC_MOVDQA_VxWx, ret, 0, arg); 801 break; 802 case TCG_TYPE_V256: 803 tcg_debug_assert(ret >= 16 && arg >= 16); 804 tcg_out_vex_modrm(s, OPC_MOVDQA_VxWx | P_VEXL, ret, 0, arg); 805 break; 806 807 default: 808 g_assert_not_reached(); 809 } 810 return true; 811} 812 813static const int avx2_dup_insn[4] = { 814 OPC_VPBROADCASTB, OPC_VPBROADCASTW, 815 OPC_VPBROADCASTD, OPC_VPBROADCASTQ, 816}; 817 818static bool tcg_out_dup_vec(TCGContext *s, TCGType type, unsigned vece, 819 TCGReg r, TCGReg a) 820{ 821 if (have_avx2) { 822 int vex_l = (type == TCG_TYPE_V256 ? P_VEXL : 0); 823 tcg_out_vex_modrm(s, avx2_dup_insn[vece] + vex_l, r, 0, a); 824 } else { 825 switch (vece) { 826 case MO_8: 827 /* ??? With zero in a register, use PSHUFB. */ 828 tcg_out_vex_modrm(s, OPC_PUNPCKLBW, r, a, a); 829 a = r; 830 /* FALLTHRU */ 831 case MO_16: 832 tcg_out_vex_modrm(s, OPC_PUNPCKLWD, r, a, a); 833 a = r; 834 /* FALLTHRU */ 835 case MO_32: 836 tcg_out_vex_modrm(s, OPC_PSHUFD, r, 0, a); 837 /* imm8 operand: all output lanes selected from input lane 0. */ 838 tcg_out8(s, 0); 839 break; 840 case MO_64: 841 tcg_out_vex_modrm(s, OPC_PUNPCKLQDQ, r, a, a); 842 break; 843 default: 844 g_assert_not_reached(); 845 } 846 } 847 return true; 848} 849 850static bool tcg_out_dupm_vec(TCGContext *s, TCGType type, unsigned vece, 851 TCGReg r, TCGReg base, intptr_t offset) 852{ 853 if (have_avx2) { 854 int vex_l = (type == TCG_TYPE_V256 ? P_VEXL : 0); 855 tcg_out_vex_modrm_offset(s, avx2_dup_insn[vece] + vex_l, 856 r, 0, base, offset); 857 } else { 858 switch (vece) { 859 case MO_64: 860 tcg_out_vex_modrm_offset(s, OPC_MOVDDUP, r, 0, base, offset); 861 break; 862 case MO_32: 863 tcg_out_vex_modrm_offset(s, OPC_VBROADCASTSS, r, 0, base, offset); 864 break; 865 case MO_16: 866 tcg_out_vex_modrm_offset(s, OPC_VPINSRW, r, r, base, offset); 867 tcg_out8(s, 0); /* imm8 */ 868 tcg_out_dup_vec(s, type, vece, r, r); 869 break; 870 case MO_8: 871 tcg_out_vex_modrm_offset(s, OPC_VPINSRB, r, r, base, offset); 872 tcg_out8(s, 0); /* imm8 */ 873 tcg_out_dup_vec(s, type, vece, r, r); 874 break; 875 default: 876 g_assert_not_reached(); 877 } 878 } 879 return true; 880} 881 882static void tcg_out_dupi_vec(TCGContext *s, TCGType type, unsigned vece, 883 TCGReg ret, int64_t arg) 884{ 885 int vex_l = (type == TCG_TYPE_V256 ? P_VEXL : 0); 886 887 if (arg == 0) { 888 tcg_out_vex_modrm(s, OPC_PXOR, ret, ret, ret); 889 return; 890 } 891 if (arg == -1) { 892 tcg_out_vex_modrm(s, OPC_PCMPEQB + vex_l, ret, ret, ret); 893 return; 894 } 895 896 if (TCG_TARGET_REG_BITS == 32 && vece < MO_64) { 897 if (have_avx2) { 898 tcg_out_vex_modrm_pool(s, OPC_VPBROADCASTD + vex_l, ret); 899 } else { 900 tcg_out_vex_modrm_pool(s, OPC_VBROADCASTSS, ret); 901 } 902 new_pool_label(s, arg, R_386_32, s->code_ptr - 4, 0); 903 } else { 904 if (type == TCG_TYPE_V64) { 905 tcg_out_vex_modrm_pool(s, OPC_MOVQ_VqWq, ret); 906 } else if (have_avx2) { 907 tcg_out_vex_modrm_pool(s, OPC_VPBROADCASTQ + vex_l, ret); 908 } else { 909 tcg_out_vex_modrm_pool(s, OPC_MOVDDUP, ret); 910 } 911 if (TCG_TARGET_REG_BITS == 64) { 912 new_pool_label(s, arg, R_386_PC32, s->code_ptr - 4, -4); 913 } else { 914 new_pool_l2(s, R_386_32, s->code_ptr - 4, 0, arg, arg >> 32); 915 } 916 } 917} 918 919static void tcg_out_movi_vec(TCGContext *s, TCGType type, 920 TCGReg ret, tcg_target_long arg) 921{ 922 if (arg == 0) { 923 tcg_out_vex_modrm(s, OPC_PXOR, ret, ret, ret); 924 return; 925 } 926 if (arg == -1) { 927 tcg_out_vex_modrm(s, OPC_PCMPEQB, ret, ret, ret); 928 return; 929 } 930 931 int rexw = (type == TCG_TYPE_I32 ? 0 : P_REXW); 932 tcg_out_vex_modrm_pool(s, OPC_MOVD_VyEy + rexw, ret); 933 if (TCG_TARGET_REG_BITS == 64) { 934 new_pool_label(s, arg, R_386_PC32, s->code_ptr - 4, -4); 935 } else { 936 new_pool_label(s, arg, R_386_32, s->code_ptr - 4, 0); 937 } 938} 939 940static void tcg_out_movi_int(TCGContext *s, TCGType type, 941 TCGReg ret, tcg_target_long arg) 942{ 943 tcg_target_long diff; 944 945 if (arg == 0) { 946 tgen_arithr(s, ARITH_XOR, ret, ret); 947 return; 948 } 949 if (arg == (uint32_t)arg || type == TCG_TYPE_I32) { 950 tcg_out_opc(s, OPC_MOVL_Iv + LOWREGMASK(ret), 0, ret, 0); 951 tcg_out32(s, arg); 952 return; 953 } 954 if (arg == (int32_t)arg) { 955 tcg_out_modrm(s, OPC_MOVL_EvIz + P_REXW, 0, ret); 956 tcg_out32(s, arg); 957 return; 958 } 959 960 /* Try a 7 byte pc-relative lea before the 10 byte movq. */ 961 diff = tcg_pcrel_diff(s, (const void *)arg) - 7; 962 if (diff == (int32_t)diff) { 963 tcg_out_opc(s, OPC_LEA | P_REXW, ret, 0, 0); 964 tcg_out8(s, (LOWREGMASK(ret) << 3) | 5); 965 tcg_out32(s, diff); 966 return; 967 } 968 969 tcg_out_opc(s, OPC_MOVL_Iv + P_REXW + LOWREGMASK(ret), 0, ret, 0); 970 tcg_out64(s, arg); 971} 972 973static void tcg_out_movi(TCGContext *s, TCGType type, 974 TCGReg ret, tcg_target_long arg) 975{ 976 switch (type) { 977 case TCG_TYPE_I32: 978#if TCG_TARGET_REG_BITS == 64 979 case TCG_TYPE_I64: 980#endif 981 if (ret < 16) { 982 tcg_out_movi_int(s, type, ret, arg); 983 } else { 984 tcg_out_movi_vec(s, type, ret, arg); 985 } 986 break; 987 default: 988 g_assert_not_reached(); 989 } 990} 991 992static inline void tcg_out_pushi(TCGContext *s, tcg_target_long val) 993{ 994 if (val == (int8_t)val) { 995 tcg_out_opc(s, OPC_PUSH_Ib, 0, 0, 0); 996 tcg_out8(s, val); 997 } else if (val == (int32_t)val) { 998 tcg_out_opc(s, OPC_PUSH_Iv, 0, 0, 0); 999 tcg_out32(s, val); 1000 } else { 1001 tcg_abort(); 1002 } 1003} 1004 1005static inline void tcg_out_mb(TCGContext *s, TCGArg a0) 1006{ 1007 /* Given the strength of x86 memory ordering, we only need care for 1008 store-load ordering. Experimentally, "lock orl $0,0(%esp)" is 1009 faster than "mfence", so don't bother with the sse insn. */ 1010 if (a0 & TCG_MO_ST_LD) { 1011 tcg_out8(s, 0xf0); 1012 tcg_out_modrm_offset(s, OPC_ARITH_EvIb, ARITH_OR, TCG_REG_ESP, 0); 1013 tcg_out8(s, 0); 1014 } 1015} 1016 1017static inline void tcg_out_push(TCGContext *s, int reg) 1018{ 1019 tcg_out_opc(s, OPC_PUSH_r32 + LOWREGMASK(reg), 0, reg, 0); 1020} 1021 1022static inline void tcg_out_pop(TCGContext *s, int reg) 1023{ 1024 tcg_out_opc(s, OPC_POP_r32 + LOWREGMASK(reg), 0, reg, 0); 1025} 1026 1027static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg ret, 1028 TCGReg arg1, intptr_t arg2) 1029{ 1030 switch (type) { 1031 case TCG_TYPE_I32: 1032 if (ret < 16) { 1033 tcg_out_modrm_offset(s, OPC_MOVL_GvEv, ret, arg1, arg2); 1034 } else { 1035 tcg_out_vex_modrm_offset(s, OPC_MOVD_VyEy, ret, 0, arg1, arg2); 1036 } 1037 break; 1038 case TCG_TYPE_I64: 1039 if (ret < 16) { 1040 tcg_out_modrm_offset(s, OPC_MOVL_GvEv | P_REXW, ret, arg1, arg2); 1041 break; 1042 } 1043 /* FALLTHRU */ 1044 case TCG_TYPE_V64: 1045 /* There is no instruction that can validate 8-byte alignment. */ 1046 tcg_debug_assert(ret >= 16); 1047 tcg_out_vex_modrm_offset(s, OPC_MOVQ_VqWq, ret, 0, arg1, arg2); 1048 break; 1049 case TCG_TYPE_V128: 1050 /* 1051 * The gvec infrastructure is asserts that v128 vector loads 1052 * and stores use a 16-byte aligned offset. Validate that the 1053 * final pointer is aligned by using an insn that will SIGSEGV. 1054 */ 1055 tcg_debug_assert(ret >= 16); 1056 tcg_out_vex_modrm_offset(s, OPC_MOVDQA_VxWx, ret, 0, arg1, arg2); 1057 break; 1058 case TCG_TYPE_V256: 1059 /* 1060 * The gvec infrastructure only requires 16-byte alignment, 1061 * so here we must use an unaligned load. 1062 */ 1063 tcg_debug_assert(ret >= 16); 1064 tcg_out_vex_modrm_offset(s, OPC_MOVDQU_VxWx | P_VEXL, 1065 ret, 0, arg1, arg2); 1066 break; 1067 default: 1068 g_assert_not_reached(); 1069 } 1070} 1071 1072static void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg, 1073 TCGReg arg1, intptr_t arg2) 1074{ 1075 switch (type) { 1076 case TCG_TYPE_I32: 1077 if (arg < 16) { 1078 tcg_out_modrm_offset(s, OPC_MOVL_EvGv, arg, arg1, arg2); 1079 } else { 1080 tcg_out_vex_modrm_offset(s, OPC_MOVD_EyVy, arg, 0, arg1, arg2); 1081 } 1082 break; 1083 case TCG_TYPE_I64: 1084 if (arg < 16) { 1085 tcg_out_modrm_offset(s, OPC_MOVL_EvGv | P_REXW, arg, arg1, arg2); 1086 break; 1087 } 1088 /* FALLTHRU */ 1089 case TCG_TYPE_V64: 1090 /* There is no instruction that can validate 8-byte alignment. */ 1091 tcg_debug_assert(arg >= 16); 1092 tcg_out_vex_modrm_offset(s, OPC_MOVQ_WqVq, arg, 0, arg1, arg2); 1093 break; 1094 case TCG_TYPE_V128: 1095 /* 1096 * The gvec infrastructure is asserts that v128 vector loads 1097 * and stores use a 16-byte aligned offset. Validate that the 1098 * final pointer is aligned by using an insn that will SIGSEGV. 1099 */ 1100 tcg_debug_assert(arg >= 16); 1101 tcg_out_vex_modrm_offset(s, OPC_MOVDQA_WxVx, arg, 0, arg1, arg2); 1102 break; 1103 case TCG_TYPE_V256: 1104 /* 1105 * The gvec infrastructure only requires 16-byte alignment, 1106 * so here we must use an unaligned store. 1107 */ 1108 tcg_debug_assert(arg >= 16); 1109 tcg_out_vex_modrm_offset(s, OPC_MOVDQU_WxVx | P_VEXL, 1110 arg, 0, arg1, arg2); 1111 break; 1112 default: 1113 g_assert_not_reached(); 1114 } 1115} 1116 1117static bool tcg_out_sti(TCGContext *s, TCGType type, TCGArg val, 1118 TCGReg base, intptr_t ofs) 1119{ 1120 int rexw = 0; 1121 if (TCG_TARGET_REG_BITS == 64 && type == TCG_TYPE_I64) { 1122 if (val != (int32_t)val) { 1123 return false; 1124 } 1125 rexw = P_REXW; 1126 } else if (type != TCG_TYPE_I32) { 1127 return false; 1128 } 1129 tcg_out_modrm_offset(s, OPC_MOVL_EvIz | rexw, 0, base, ofs); 1130 tcg_out32(s, val); 1131 return true; 1132} 1133 1134static void tcg_out_shifti(TCGContext *s, int subopc, int reg, int count) 1135{ 1136 /* Propagate an opcode prefix, such as P_DATA16. */ 1137 int ext = subopc & ~0x7; 1138 subopc &= 0x7; 1139 1140 if (count == 1) { 1141 tcg_out_modrm(s, OPC_SHIFT_1 + ext, subopc, reg); 1142 } else { 1143 tcg_out_modrm(s, OPC_SHIFT_Ib + ext, subopc, reg); 1144 tcg_out8(s, count); 1145 } 1146} 1147 1148static inline void tcg_out_bswap32(TCGContext *s, int reg) 1149{ 1150 tcg_out_opc(s, OPC_BSWAP + LOWREGMASK(reg), 0, reg, 0); 1151} 1152 1153static inline void tcg_out_rolw_8(TCGContext *s, int reg) 1154{ 1155 tcg_out_shifti(s, SHIFT_ROL + P_DATA16, reg, 8); 1156} 1157 1158static inline void tcg_out_ext8u(TCGContext *s, int dest, int src) 1159{ 1160 /* movzbl */ 1161 tcg_debug_assert(src < 4 || TCG_TARGET_REG_BITS == 64); 1162 tcg_out_modrm(s, OPC_MOVZBL + P_REXB_RM, dest, src); 1163} 1164 1165static void tcg_out_ext8s(TCGContext *s, int dest, int src, int rexw) 1166{ 1167 /* movsbl */ 1168 tcg_debug_assert(src < 4 || TCG_TARGET_REG_BITS == 64); 1169 tcg_out_modrm(s, OPC_MOVSBL + P_REXB_RM + rexw, dest, src); 1170} 1171 1172static inline void tcg_out_ext16u(TCGContext *s, int dest, int src) 1173{ 1174 /* movzwl */ 1175 tcg_out_modrm(s, OPC_MOVZWL, dest, src); 1176} 1177 1178static inline void tcg_out_ext16s(TCGContext *s, int dest, int src, int rexw) 1179{ 1180 /* movsw[lq] */ 1181 tcg_out_modrm(s, OPC_MOVSWL + rexw, dest, src); 1182} 1183 1184static inline void tcg_out_ext32u(TCGContext *s, int dest, int src) 1185{ 1186 /* 32-bit mov zero extends. */ 1187 tcg_out_modrm(s, OPC_MOVL_GvEv, dest, src); 1188} 1189 1190static inline void tcg_out_ext32s(TCGContext *s, int dest, int src) 1191{ 1192 tcg_out_modrm(s, OPC_MOVSLQ, dest, src); 1193} 1194 1195static inline void tcg_out_bswap64(TCGContext *s, int reg) 1196{ 1197 tcg_out_opc(s, OPC_BSWAP + P_REXW + LOWREGMASK(reg), 0, reg, 0); 1198} 1199 1200static void tgen_arithi(TCGContext *s, int c, int r0, 1201 tcg_target_long val, int cf) 1202{ 1203 int rexw = 0; 1204 1205 if (TCG_TARGET_REG_BITS == 64) { 1206 rexw = c & -8; 1207 c &= 7; 1208 } 1209 1210 /* ??? While INC is 2 bytes shorter than ADDL $1, they also induce 1211 partial flags update stalls on Pentium4 and are not recommended 1212 by current Intel optimization manuals. */ 1213 if (!cf && (c == ARITH_ADD || c == ARITH_SUB) && (val == 1 || val == -1)) { 1214 int is_inc = (c == ARITH_ADD) ^ (val < 0); 1215 if (TCG_TARGET_REG_BITS == 64) { 1216 /* The single-byte increment encodings are re-tasked as the 1217 REX prefixes. Use the MODRM encoding. */ 1218 tcg_out_modrm(s, OPC_GRP5 + rexw, 1219 (is_inc ? EXT5_INC_Ev : EXT5_DEC_Ev), r0); 1220 } else { 1221 tcg_out8(s, (is_inc ? OPC_INC_r32 : OPC_DEC_r32) + r0); 1222 } 1223 return; 1224 } 1225 1226 if (c == ARITH_AND) { 1227 if (TCG_TARGET_REG_BITS == 64) { 1228 if (val == 0xffffffffu) { 1229 tcg_out_ext32u(s, r0, r0); 1230 return; 1231 } 1232 if (val == (uint32_t)val) { 1233 /* AND with no high bits set can use a 32-bit operation. */ 1234 rexw = 0; 1235 } 1236 } 1237 if (val == 0xffu && (r0 < 4 || TCG_TARGET_REG_BITS == 64)) { 1238 tcg_out_ext8u(s, r0, r0); 1239 return; 1240 } 1241 if (val == 0xffffu) { 1242 tcg_out_ext16u(s, r0, r0); 1243 return; 1244 } 1245 } 1246 1247 if (val == (int8_t)val) { 1248 tcg_out_modrm(s, OPC_ARITH_EvIb + rexw, c, r0); 1249 tcg_out8(s, val); 1250 return; 1251 } 1252 if (rexw == 0 || val == (int32_t)val) { 1253 tcg_out_modrm(s, OPC_ARITH_EvIz + rexw, c, r0); 1254 tcg_out32(s, val); 1255 return; 1256 } 1257 1258 tcg_abort(); 1259} 1260 1261static void tcg_out_addi(TCGContext *s, int reg, tcg_target_long val) 1262{ 1263 if (val != 0) { 1264 tgen_arithi(s, ARITH_ADD + P_REXW, reg, val, 0); 1265 } 1266} 1267 1268/* Use SMALL != 0 to force a short forward branch. */ 1269static void tcg_out_jxx(TCGContext *s, int opc, TCGLabel *l, int small) 1270{ 1271 int32_t val, val1; 1272 1273 if (l->has_value) { 1274 val = tcg_pcrel_diff(s, l->u.value_ptr); 1275 val1 = val - 2; 1276 if ((int8_t)val1 == val1) { 1277 if (opc == -1) { 1278 tcg_out8(s, OPC_JMP_short); 1279 } else { 1280 tcg_out8(s, OPC_JCC_short + opc); 1281 } 1282 tcg_out8(s, val1); 1283 } else { 1284 if (small) { 1285 tcg_abort(); 1286 } 1287 if (opc == -1) { 1288 tcg_out8(s, OPC_JMP_long); 1289 tcg_out32(s, val - 5); 1290 } else { 1291 tcg_out_opc(s, OPC_JCC_long + opc, 0, 0, 0); 1292 tcg_out32(s, val - 6); 1293 } 1294 } 1295 } else if (small) { 1296 if (opc == -1) { 1297 tcg_out8(s, OPC_JMP_short); 1298 } else { 1299 tcg_out8(s, OPC_JCC_short + opc); 1300 } 1301 tcg_out_reloc(s, s->code_ptr, R_386_PC8, l, -1); 1302 s->code_ptr += 1; 1303 } else { 1304 if (opc == -1) { 1305 tcg_out8(s, OPC_JMP_long); 1306 } else { 1307 tcg_out_opc(s, OPC_JCC_long + opc, 0, 0, 0); 1308 } 1309 tcg_out_reloc(s, s->code_ptr, R_386_PC32, l, -4); 1310 s->code_ptr += 4; 1311 } 1312} 1313 1314static void tcg_out_cmp(TCGContext *s, TCGArg arg1, TCGArg arg2, 1315 int const_arg2, int rexw) 1316{ 1317 if (const_arg2) { 1318 if (arg2 == 0) { 1319 /* test r, r */ 1320 tcg_out_modrm(s, OPC_TESTL + rexw, arg1, arg1); 1321 } else { 1322 tgen_arithi(s, ARITH_CMP + rexw, arg1, arg2, 0); 1323 } 1324 } else { 1325 tgen_arithr(s, ARITH_CMP + rexw, arg1, arg2); 1326 } 1327} 1328 1329static void tcg_out_brcond32(TCGContext *s, TCGCond cond, 1330 TCGArg arg1, TCGArg arg2, int const_arg2, 1331 TCGLabel *label, int small) 1332{ 1333 tcg_out_cmp(s, arg1, arg2, const_arg2, 0); 1334 tcg_out_jxx(s, tcg_cond_to_jcc[cond], label, small); 1335} 1336 1337#if TCG_TARGET_REG_BITS == 64 1338static void tcg_out_brcond64(TCGContext *s, TCGCond cond, 1339 TCGArg arg1, TCGArg arg2, int const_arg2, 1340 TCGLabel *label, int small) 1341{ 1342 tcg_out_cmp(s, arg1, arg2, const_arg2, P_REXW); 1343 tcg_out_jxx(s, tcg_cond_to_jcc[cond], label, small); 1344} 1345#else 1346/* XXX: we implement it at the target level to avoid having to 1347 handle cross basic blocks temporaries */ 1348static void tcg_out_brcond2(TCGContext *s, const TCGArg *args, 1349 const int *const_args, int small) 1350{ 1351 TCGLabel *label_next = gen_new_label(); 1352 TCGLabel *label_this = arg_label(args[5]); 1353 1354 switch(args[4]) { 1355 case TCG_COND_EQ: 1356 tcg_out_brcond32(s, TCG_COND_NE, args[0], args[2], const_args[2], 1357 label_next, 1); 1358 tcg_out_brcond32(s, TCG_COND_EQ, args[1], args[3], const_args[3], 1359 label_this, small); 1360 break; 1361 case TCG_COND_NE: 1362 tcg_out_brcond32(s, TCG_COND_NE, args[0], args[2], const_args[2], 1363 label_this, small); 1364 tcg_out_brcond32(s, TCG_COND_NE, args[1], args[3], const_args[3], 1365 label_this, small); 1366 break; 1367 case TCG_COND_LT: 1368 tcg_out_brcond32(s, TCG_COND_LT, args[1], args[3], const_args[3], 1369 label_this, small); 1370 tcg_out_jxx(s, JCC_JNE, label_next, 1); 1371 tcg_out_brcond32(s, TCG_COND_LTU, args[0], args[2], const_args[2], 1372 label_this, small); 1373 break; 1374 case TCG_COND_LE: 1375 tcg_out_brcond32(s, TCG_COND_LT, args[1], args[3], const_args[3], 1376 label_this, small); 1377 tcg_out_jxx(s, JCC_JNE, label_next, 1); 1378 tcg_out_brcond32(s, TCG_COND_LEU, args[0], args[2], const_args[2], 1379 label_this, small); 1380 break; 1381 case TCG_COND_GT: 1382 tcg_out_brcond32(s, TCG_COND_GT, args[1], args[3], const_args[3], 1383 label_this, small); 1384 tcg_out_jxx(s, JCC_JNE, label_next, 1); 1385 tcg_out_brcond32(s, TCG_COND_GTU, args[0], args[2], const_args[2], 1386 label_this, small); 1387 break; 1388 case TCG_COND_GE: 1389 tcg_out_brcond32(s, TCG_COND_GT, args[1], args[3], const_args[3], 1390 label_this, small); 1391 tcg_out_jxx(s, JCC_JNE, label_next, 1); 1392 tcg_out_brcond32(s, TCG_COND_GEU, args[0], args[2], const_args[2], 1393 label_this, small); 1394 break; 1395 case TCG_COND_LTU: 1396 tcg_out_brcond32(s, TCG_COND_LTU, args[1], args[3], const_args[3], 1397 label_this, small); 1398 tcg_out_jxx(s, JCC_JNE, label_next, 1); 1399 tcg_out_brcond32(s, TCG_COND_LTU, args[0], args[2], const_args[2], 1400 label_this, small); 1401 break; 1402 case TCG_COND_LEU: 1403 tcg_out_brcond32(s, TCG_COND_LTU, args[1], args[3], const_args[3], 1404 label_this, small); 1405 tcg_out_jxx(s, JCC_JNE, label_next, 1); 1406 tcg_out_brcond32(s, TCG_COND_LEU, args[0], args[2], const_args[2], 1407 label_this, small); 1408 break; 1409 case TCG_COND_GTU: 1410 tcg_out_brcond32(s, TCG_COND_GTU, args[1], args[3], const_args[3], 1411 label_this, small); 1412 tcg_out_jxx(s, JCC_JNE, label_next, 1); 1413 tcg_out_brcond32(s, TCG_COND_GTU, args[0], args[2], const_args[2], 1414 label_this, small); 1415 break; 1416 case TCG_COND_GEU: 1417 tcg_out_brcond32(s, TCG_COND_GTU, args[1], args[3], const_args[3], 1418 label_this, small); 1419 tcg_out_jxx(s, JCC_JNE, label_next, 1); 1420 tcg_out_brcond32(s, TCG_COND_GEU, args[0], args[2], const_args[2], 1421 label_this, small); 1422 break; 1423 default: 1424 tcg_abort(); 1425 } 1426 tcg_out_label(s, label_next); 1427} 1428#endif 1429 1430static void tcg_out_setcond32(TCGContext *s, TCGCond cond, TCGArg dest, 1431 TCGArg arg1, TCGArg arg2, int const_arg2) 1432{ 1433 tcg_out_cmp(s, arg1, arg2, const_arg2, 0); 1434 tcg_out_modrm(s, OPC_SETCC | tcg_cond_to_jcc[cond], 0, dest); 1435 tcg_out_ext8u(s, dest, dest); 1436} 1437 1438#if TCG_TARGET_REG_BITS == 64 1439static void tcg_out_setcond64(TCGContext *s, TCGCond cond, TCGArg dest, 1440 TCGArg arg1, TCGArg arg2, int const_arg2) 1441{ 1442 tcg_out_cmp(s, arg1, arg2, const_arg2, P_REXW); 1443 tcg_out_modrm(s, OPC_SETCC | tcg_cond_to_jcc[cond], 0, dest); 1444 tcg_out_ext8u(s, dest, dest); 1445} 1446#else 1447static void tcg_out_setcond2(TCGContext *s, const TCGArg *args, 1448 const int *const_args) 1449{ 1450 TCGArg new_args[6]; 1451 TCGLabel *label_true, *label_over; 1452 1453 memcpy(new_args, args+1, 5*sizeof(TCGArg)); 1454 1455 if (args[0] == args[1] || args[0] == args[2] 1456 || (!const_args[3] && args[0] == args[3]) 1457 || (!const_args[4] && args[0] == args[4])) { 1458 /* When the destination overlaps with one of the argument 1459 registers, don't do anything tricky. */ 1460 label_true = gen_new_label(); 1461 label_over = gen_new_label(); 1462 1463 new_args[5] = label_arg(label_true); 1464 tcg_out_brcond2(s, new_args, const_args+1, 1); 1465 1466 tcg_out_movi(s, TCG_TYPE_I32, args[0], 0); 1467 tcg_out_jxx(s, JCC_JMP, label_over, 1); 1468 tcg_out_label(s, label_true); 1469 1470 tcg_out_movi(s, TCG_TYPE_I32, args[0], 1); 1471 tcg_out_label(s, label_over); 1472 } else { 1473 /* When the destination does not overlap one of the arguments, 1474 clear the destination first, jump if cond false, and emit an 1475 increment in the true case. This results in smaller code. */ 1476 1477 tcg_out_movi(s, TCG_TYPE_I32, args[0], 0); 1478 1479 label_over = gen_new_label(); 1480 new_args[4] = tcg_invert_cond(new_args[4]); 1481 new_args[5] = label_arg(label_over); 1482 tcg_out_brcond2(s, new_args, const_args+1, 1); 1483 1484 tgen_arithi(s, ARITH_ADD, args[0], 1, 0); 1485 tcg_out_label(s, label_over); 1486 } 1487} 1488#endif 1489 1490static void tcg_out_cmov(TCGContext *s, TCGCond cond, int rexw, 1491 TCGReg dest, TCGReg v1) 1492{ 1493 if (have_cmov) { 1494 tcg_out_modrm(s, OPC_CMOVCC | tcg_cond_to_jcc[cond] | rexw, dest, v1); 1495 } else { 1496 TCGLabel *over = gen_new_label(); 1497 tcg_out_jxx(s, tcg_cond_to_jcc[tcg_invert_cond(cond)], over, 1); 1498 tcg_out_mov(s, TCG_TYPE_I32, dest, v1); 1499 tcg_out_label(s, over); 1500 } 1501} 1502 1503static void tcg_out_movcond32(TCGContext *s, TCGCond cond, TCGReg dest, 1504 TCGReg c1, TCGArg c2, int const_c2, 1505 TCGReg v1) 1506{ 1507 tcg_out_cmp(s, c1, c2, const_c2, 0); 1508 tcg_out_cmov(s, cond, 0, dest, v1); 1509} 1510 1511#if TCG_TARGET_REG_BITS == 64 1512static void tcg_out_movcond64(TCGContext *s, TCGCond cond, TCGReg dest, 1513 TCGReg c1, TCGArg c2, int const_c2, 1514 TCGReg v1) 1515{ 1516 tcg_out_cmp(s, c1, c2, const_c2, P_REXW); 1517 tcg_out_cmov(s, cond, P_REXW, dest, v1); 1518} 1519#endif 1520 1521static void tcg_out_ctz(TCGContext *s, int rexw, TCGReg dest, TCGReg arg1, 1522 TCGArg arg2, bool const_a2) 1523{ 1524 if (have_bmi1) { 1525 tcg_out_modrm(s, OPC_TZCNT + rexw, dest, arg1); 1526 if (const_a2) { 1527 tcg_debug_assert(arg2 == (rexw ? 64 : 32)); 1528 } else { 1529 tcg_debug_assert(dest != arg2); 1530 tcg_out_cmov(s, TCG_COND_LTU, rexw, dest, arg2); 1531 } 1532 } else { 1533 tcg_debug_assert(dest != arg2); 1534 tcg_out_modrm(s, OPC_BSF + rexw, dest, arg1); 1535 tcg_out_cmov(s, TCG_COND_EQ, rexw, dest, arg2); 1536 } 1537} 1538 1539static void tcg_out_clz(TCGContext *s, int rexw, TCGReg dest, TCGReg arg1, 1540 TCGArg arg2, bool const_a2) 1541{ 1542 if (have_lzcnt) { 1543 tcg_out_modrm(s, OPC_LZCNT + rexw, dest, arg1); 1544 if (const_a2) { 1545 tcg_debug_assert(arg2 == (rexw ? 64 : 32)); 1546 } else { 1547 tcg_debug_assert(dest != arg2); 1548 tcg_out_cmov(s, TCG_COND_LTU, rexw, dest, arg2); 1549 } 1550 } else { 1551 tcg_debug_assert(!const_a2); 1552 tcg_debug_assert(dest != arg1); 1553 tcg_debug_assert(dest != arg2); 1554 1555 /* Recall that the output of BSR is the index not the count. */ 1556 tcg_out_modrm(s, OPC_BSR + rexw, dest, arg1); 1557 tgen_arithi(s, ARITH_XOR + rexw, dest, rexw ? 63 : 31, 0); 1558 1559 /* Since we have destroyed the flags from BSR, we have to re-test. */ 1560 tcg_out_cmp(s, arg1, 0, 1, rexw); 1561 tcg_out_cmov(s, TCG_COND_EQ, rexw, dest, arg2); 1562 } 1563} 1564 1565static void tcg_out_branch(TCGContext *s, int call, const tcg_insn_unit *dest) 1566{ 1567 intptr_t disp = tcg_pcrel_diff(s, dest) - 5; 1568 1569 if (disp == (int32_t)disp) { 1570 tcg_out_opc(s, call ? OPC_CALL_Jz : OPC_JMP_long, 0, 0, 0); 1571 tcg_out32(s, disp); 1572 } else { 1573 /* rip-relative addressing into the constant pool. 1574 This is 6 + 8 = 14 bytes, as compared to using an 1575 an immediate load 10 + 6 = 16 bytes, plus we may 1576 be able to re-use the pool constant for more calls. */ 1577 tcg_out_opc(s, OPC_GRP5, 0, 0, 0); 1578 tcg_out8(s, (call ? EXT5_CALLN_Ev : EXT5_JMPN_Ev) << 3 | 5); 1579 new_pool_label(s, (uintptr_t)dest, R_386_PC32, s->code_ptr, -4); 1580 tcg_out32(s, 0); 1581 } 1582} 1583 1584static inline void tcg_out_call(TCGContext *s, const tcg_insn_unit *dest) 1585{ 1586 tcg_out_branch(s, 1, dest); 1587} 1588 1589static void tcg_out_jmp(TCGContext *s, const tcg_insn_unit *dest) 1590{ 1591 tcg_out_branch(s, 0, dest); 1592} 1593 1594static void tcg_out_nopn(TCGContext *s, int n) 1595{ 1596 int i; 1597 /* Emit 1 or 2 operand size prefixes for the standard one byte nop, 1598 * "xchg %eax,%eax", forming "xchg %ax,%ax". All cores accept the 1599 * duplicate prefix, and all of the interesting recent cores can 1600 * decode and discard the duplicates in a single cycle. 1601 */ 1602 tcg_debug_assert(n >= 1); 1603 for (i = 1; i < n; ++i) { 1604 tcg_out8(s, 0x66); 1605 } 1606 tcg_out8(s, 0x90); 1607} 1608 1609#if defined(CONFIG_SOFTMMU) 1610#include "../tcg-ldst.c.inc" 1611 1612/* helper signature: helper_ret_ld_mmu(CPUState *env, target_ulong addr, 1613 * int mmu_idx, uintptr_t ra) 1614 */ 1615static void * const qemu_ld_helpers[16] = { 1616 [MO_UB] = helper_ret_ldub_mmu, 1617 [MO_LEUW] = helper_le_lduw_mmu, 1618 [MO_LEUL] = helper_le_ldul_mmu, 1619 [MO_LEQ] = helper_le_ldq_mmu, 1620 [MO_BEUW] = helper_be_lduw_mmu, 1621 [MO_BEUL] = helper_be_ldul_mmu, 1622 [MO_BEQ] = helper_be_ldq_mmu, 1623}; 1624 1625/* helper signature: helper_ret_st_mmu(CPUState *env, target_ulong addr, 1626 * uintxx_t val, int mmu_idx, uintptr_t ra) 1627 */ 1628static void * const qemu_st_helpers[16] = { 1629 [MO_UB] = helper_ret_stb_mmu, 1630 [MO_LEUW] = helper_le_stw_mmu, 1631 [MO_LEUL] = helper_le_stl_mmu, 1632 [MO_LEQ] = helper_le_stq_mmu, 1633 [MO_BEUW] = helper_be_stw_mmu, 1634 [MO_BEUL] = helper_be_stl_mmu, 1635 [MO_BEQ] = helper_be_stq_mmu, 1636}; 1637 1638/* Perform the TLB load and compare. 1639 1640 Inputs: 1641 ADDRLO and ADDRHI contain the low and high part of the address. 1642 1643 MEM_INDEX and S_BITS are the memory context and log2 size of the load. 1644 1645 WHICH is the offset into the CPUTLBEntry structure of the slot to read. 1646 This should be offsetof addr_read or addr_write. 1647 1648 Outputs: 1649 LABEL_PTRS is filled with 1 (32-bit addresses) or 2 (64-bit addresses) 1650 positions of the displacements of forward jumps to the TLB miss case. 1651 1652 Second argument register is loaded with the low part of the address. 1653 In the TLB hit case, it has been adjusted as indicated by the TLB 1654 and so is a host address. In the TLB miss case, it continues to 1655 hold a guest address. 1656 1657 First argument register is clobbered. */ 1658 1659static inline void tcg_out_tlb_load(TCGContext *s, TCGReg addrlo, TCGReg addrhi, 1660 int mem_index, MemOp opc, 1661 tcg_insn_unit **label_ptr, int which) 1662{ 1663 const TCGReg r0 = TCG_REG_L0; 1664 const TCGReg r1 = TCG_REG_L1; 1665 TCGType ttype = TCG_TYPE_I32; 1666 TCGType tlbtype = TCG_TYPE_I32; 1667 int trexw = 0, hrexw = 0, tlbrexw = 0; 1668 unsigned a_bits = get_alignment_bits(opc); 1669 unsigned s_bits = opc & MO_SIZE; 1670 unsigned a_mask = (1 << a_bits) - 1; 1671 unsigned s_mask = (1 << s_bits) - 1; 1672 target_ulong tlb_mask; 1673 1674 if (TCG_TARGET_REG_BITS == 64) { 1675 if (TARGET_LONG_BITS == 64) { 1676 ttype = TCG_TYPE_I64; 1677 trexw = P_REXW; 1678 } 1679 if (TCG_TYPE_PTR == TCG_TYPE_I64) { 1680 hrexw = P_REXW; 1681 if (TARGET_PAGE_BITS + CPU_TLB_DYN_MAX_BITS > 32) { 1682 tlbtype = TCG_TYPE_I64; 1683 tlbrexw = P_REXW; 1684 } 1685 } 1686 } 1687 1688 tcg_out_mov(s, tlbtype, r0, addrlo); 1689 tcg_out_shifti(s, SHIFT_SHR + tlbrexw, r0, 1690 TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS); 1691 1692 tcg_out_modrm_offset(s, OPC_AND_GvEv + trexw, r0, TCG_AREG0, 1693 TLB_MASK_TABLE_OFS(mem_index) + 1694 offsetof(CPUTLBDescFast, mask)); 1695 1696 tcg_out_modrm_offset(s, OPC_ADD_GvEv + hrexw, r0, TCG_AREG0, 1697 TLB_MASK_TABLE_OFS(mem_index) + 1698 offsetof(CPUTLBDescFast, table)); 1699 1700 /* If the required alignment is at least as large as the access, simply 1701 copy the address and mask. For lesser alignments, check that we don't 1702 cross pages for the complete access. */ 1703 if (a_bits >= s_bits) { 1704 tcg_out_mov(s, ttype, r1, addrlo); 1705 } else { 1706 tcg_out_modrm_offset(s, OPC_LEA + trexw, r1, addrlo, s_mask - a_mask); 1707 } 1708 tlb_mask = (target_ulong)TARGET_PAGE_MASK | a_mask; 1709 tgen_arithi(s, ARITH_AND + trexw, r1, tlb_mask, 0); 1710 1711 /* cmp 0(r0), r1 */ 1712 tcg_out_modrm_offset(s, OPC_CMP_GvEv + trexw, r1, r0, which); 1713 1714 /* Prepare for both the fast path add of the tlb addend, and the slow 1715 path function argument setup. */ 1716 tcg_out_mov(s, ttype, r1, addrlo); 1717 1718 /* jne slow_path */ 1719 tcg_out_opc(s, OPC_JCC_long + JCC_JNE, 0, 0, 0); 1720 label_ptr[0] = s->code_ptr; 1721 s->code_ptr += 4; 1722 1723 if (TARGET_LONG_BITS > TCG_TARGET_REG_BITS) { 1724 /* cmp 4(r0), addrhi */ 1725 tcg_out_modrm_offset(s, OPC_CMP_GvEv, addrhi, r0, which + 4); 1726 1727 /* jne slow_path */ 1728 tcg_out_opc(s, OPC_JCC_long + JCC_JNE, 0, 0, 0); 1729 label_ptr[1] = s->code_ptr; 1730 s->code_ptr += 4; 1731 } 1732 1733 /* TLB Hit. */ 1734 1735 /* add addend(r0), r1 */ 1736 tcg_out_modrm_offset(s, OPC_ADD_GvEv + hrexw, r1, r0, 1737 offsetof(CPUTLBEntry, addend)); 1738} 1739 1740/* 1741 * Record the context of a call to the out of line helper code for the slow path 1742 * for a load or store, so that we can later generate the correct helper code 1743 */ 1744static void add_qemu_ldst_label(TCGContext *s, bool is_ld, bool is_64, 1745 TCGMemOpIdx oi, 1746 TCGReg datalo, TCGReg datahi, 1747 TCGReg addrlo, TCGReg addrhi, 1748 tcg_insn_unit *raddr, 1749 tcg_insn_unit **label_ptr) 1750{ 1751 TCGLabelQemuLdst *label = new_ldst_label(s); 1752 1753 label->is_ld = is_ld; 1754 label->oi = oi; 1755 label->type = is_64 ? TCG_TYPE_I64 : TCG_TYPE_I32; 1756 label->datalo_reg = datalo; 1757 label->datahi_reg = datahi; 1758 label->addrlo_reg = addrlo; 1759 label->addrhi_reg = addrhi; 1760 label->raddr = tcg_splitwx_to_rx(raddr); 1761 label->label_ptr[0] = label_ptr[0]; 1762 if (TARGET_LONG_BITS > TCG_TARGET_REG_BITS) { 1763 label->label_ptr[1] = label_ptr[1]; 1764 } 1765} 1766 1767/* 1768 * Generate code for the slow path for a load at the end of block 1769 */ 1770static bool tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *l) 1771{ 1772 TCGMemOpIdx oi = l->oi; 1773 MemOp opc = get_memop(oi); 1774 TCGReg data_reg; 1775 tcg_insn_unit **label_ptr = &l->label_ptr[0]; 1776 int rexw = (l->type == TCG_TYPE_I64 ? P_REXW : 0); 1777 1778 /* resolve label address */ 1779 tcg_patch32(label_ptr[0], s->code_ptr - label_ptr[0] - 4); 1780 if (TARGET_LONG_BITS > TCG_TARGET_REG_BITS) { 1781 tcg_patch32(label_ptr[1], s->code_ptr - label_ptr[1] - 4); 1782 } 1783 1784 if (TCG_TARGET_REG_BITS == 32) { 1785 int ofs = 0; 1786 1787 tcg_out_st(s, TCG_TYPE_PTR, TCG_AREG0, TCG_REG_ESP, ofs); 1788 ofs += 4; 1789 1790 tcg_out_st(s, TCG_TYPE_I32, l->addrlo_reg, TCG_REG_ESP, ofs); 1791 ofs += 4; 1792 1793 if (TARGET_LONG_BITS == 64) { 1794 tcg_out_st(s, TCG_TYPE_I32, l->addrhi_reg, TCG_REG_ESP, ofs); 1795 ofs += 4; 1796 } 1797 1798 tcg_out_sti(s, TCG_TYPE_I32, oi, TCG_REG_ESP, ofs); 1799 ofs += 4; 1800 1801 tcg_out_sti(s, TCG_TYPE_PTR, (uintptr_t)l->raddr, TCG_REG_ESP, ofs); 1802 } else { 1803 tcg_out_mov(s, TCG_TYPE_PTR, tcg_target_call_iarg_regs[0], TCG_AREG0); 1804 /* The second argument is already loaded with addrlo. */ 1805 tcg_out_movi(s, TCG_TYPE_I32, tcg_target_call_iarg_regs[2], oi); 1806 tcg_out_movi(s, TCG_TYPE_PTR, tcg_target_call_iarg_regs[3], 1807 (uintptr_t)l->raddr); 1808 } 1809 1810 tcg_out_call(s, qemu_ld_helpers[opc & (MO_BSWAP | MO_SIZE)]); 1811 1812 data_reg = l->datalo_reg; 1813 switch (opc & MO_SSIZE) { 1814 case MO_SB: 1815 tcg_out_ext8s(s, data_reg, TCG_REG_EAX, rexw); 1816 break; 1817 case MO_SW: 1818 tcg_out_ext16s(s, data_reg, TCG_REG_EAX, rexw); 1819 break; 1820#if TCG_TARGET_REG_BITS == 64 1821 case MO_SL: 1822 tcg_out_ext32s(s, data_reg, TCG_REG_EAX); 1823 break; 1824#endif 1825 case MO_UB: 1826 case MO_UW: 1827 /* Note that the helpers have zero-extended to tcg_target_long. */ 1828 case MO_UL: 1829 tcg_out_mov(s, TCG_TYPE_I32, data_reg, TCG_REG_EAX); 1830 break; 1831 case MO_Q: 1832 if (TCG_TARGET_REG_BITS == 64) { 1833 tcg_out_mov(s, TCG_TYPE_I64, data_reg, TCG_REG_RAX); 1834 } else if (data_reg == TCG_REG_EDX) { 1835 /* xchg %edx, %eax */ 1836 tcg_out_opc(s, OPC_XCHG_ax_r32 + TCG_REG_EDX, 0, 0, 0); 1837 tcg_out_mov(s, TCG_TYPE_I32, l->datahi_reg, TCG_REG_EAX); 1838 } else { 1839 tcg_out_mov(s, TCG_TYPE_I32, data_reg, TCG_REG_EAX); 1840 tcg_out_mov(s, TCG_TYPE_I32, l->datahi_reg, TCG_REG_EDX); 1841 } 1842 break; 1843 default: 1844 tcg_abort(); 1845 } 1846 1847 /* Jump to the code corresponding to next IR of qemu_st */ 1848 tcg_out_jmp(s, l->raddr); 1849 return true; 1850} 1851 1852/* 1853 * Generate code for the slow path for a store at the end of block 1854 */ 1855static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *l) 1856{ 1857 TCGMemOpIdx oi = l->oi; 1858 MemOp opc = get_memop(oi); 1859 MemOp s_bits = opc & MO_SIZE; 1860 tcg_insn_unit **label_ptr = &l->label_ptr[0]; 1861 TCGReg retaddr; 1862 1863 /* resolve label address */ 1864 tcg_patch32(label_ptr[0], s->code_ptr - label_ptr[0] - 4); 1865 if (TARGET_LONG_BITS > TCG_TARGET_REG_BITS) { 1866 tcg_patch32(label_ptr[1], s->code_ptr - label_ptr[1] - 4); 1867 } 1868 1869 if (TCG_TARGET_REG_BITS == 32) { 1870 int ofs = 0; 1871 1872 tcg_out_st(s, TCG_TYPE_PTR, TCG_AREG0, TCG_REG_ESP, ofs); 1873 ofs += 4; 1874 1875 tcg_out_st(s, TCG_TYPE_I32, l->addrlo_reg, TCG_REG_ESP, ofs); 1876 ofs += 4; 1877 1878 if (TARGET_LONG_BITS == 64) { 1879 tcg_out_st(s, TCG_TYPE_I32, l->addrhi_reg, TCG_REG_ESP, ofs); 1880 ofs += 4; 1881 } 1882 1883 tcg_out_st(s, TCG_TYPE_I32, l->datalo_reg, TCG_REG_ESP, ofs); 1884 ofs += 4; 1885 1886 if (s_bits == MO_64) { 1887 tcg_out_st(s, TCG_TYPE_I32, l->datahi_reg, TCG_REG_ESP, ofs); 1888 ofs += 4; 1889 } 1890 1891 tcg_out_sti(s, TCG_TYPE_I32, oi, TCG_REG_ESP, ofs); 1892 ofs += 4; 1893 1894 retaddr = TCG_REG_EAX; 1895 tcg_out_movi(s, TCG_TYPE_PTR, retaddr, (uintptr_t)l->raddr); 1896 tcg_out_st(s, TCG_TYPE_PTR, retaddr, TCG_REG_ESP, ofs); 1897 } else { 1898 tcg_out_mov(s, TCG_TYPE_PTR, tcg_target_call_iarg_regs[0], TCG_AREG0); 1899 /* The second argument is already loaded with addrlo. */ 1900 tcg_out_mov(s, (s_bits == MO_64 ? TCG_TYPE_I64 : TCG_TYPE_I32), 1901 tcg_target_call_iarg_regs[2], l->datalo_reg); 1902 tcg_out_movi(s, TCG_TYPE_I32, tcg_target_call_iarg_regs[3], oi); 1903 1904 if (ARRAY_SIZE(tcg_target_call_iarg_regs) > 4) { 1905 retaddr = tcg_target_call_iarg_regs[4]; 1906 tcg_out_movi(s, TCG_TYPE_PTR, retaddr, (uintptr_t)l->raddr); 1907 } else { 1908 retaddr = TCG_REG_RAX; 1909 tcg_out_movi(s, TCG_TYPE_PTR, retaddr, (uintptr_t)l->raddr); 1910 tcg_out_st(s, TCG_TYPE_PTR, retaddr, TCG_REG_ESP, 1911 TCG_TARGET_CALL_STACK_OFFSET); 1912 } 1913 } 1914 1915 /* "Tail call" to the helper, with the return address back inline. */ 1916 tcg_out_push(s, retaddr); 1917 tcg_out_jmp(s, qemu_st_helpers[opc & (MO_BSWAP | MO_SIZE)]); 1918 return true; 1919} 1920#elif TCG_TARGET_REG_BITS == 32 1921# define x86_guest_base_seg 0 1922# define x86_guest_base_index -1 1923# define x86_guest_base_offset guest_base 1924#else 1925static int x86_guest_base_seg; 1926static int x86_guest_base_index = -1; 1927static int32_t x86_guest_base_offset; 1928# if defined(__x86_64__) && defined(__linux__) 1929# include <asm/prctl.h> 1930# include <sys/prctl.h> 1931int arch_prctl(int code, unsigned long addr); 1932static inline int setup_guest_base_seg(void) 1933{ 1934 if (arch_prctl(ARCH_SET_GS, guest_base) == 0) { 1935 return P_GS; 1936 } 1937 return 0; 1938} 1939# elif defined (__FreeBSD__) || defined (__FreeBSD_kernel__) 1940# include <machine/sysarch.h> 1941static inline int setup_guest_base_seg(void) 1942{ 1943 if (sysarch(AMD64_SET_GSBASE, &guest_base) == 0) { 1944 return P_GS; 1945 } 1946 return 0; 1947} 1948# else 1949static inline int setup_guest_base_seg(void) 1950{ 1951 return 0; 1952} 1953# endif 1954#endif /* SOFTMMU */ 1955 1956static void tcg_out_qemu_ld_direct(TCGContext *s, TCGReg datalo, TCGReg datahi, 1957 TCGReg base, int index, intptr_t ofs, 1958 int seg, bool is64, MemOp memop) 1959{ 1960 bool use_movbe = false; 1961 int rexw = is64 * P_REXW; 1962 int movop = OPC_MOVL_GvEv; 1963 1964 /* Do big-endian loads with movbe. */ 1965 if (memop & MO_BSWAP) { 1966 tcg_debug_assert(have_movbe); 1967 use_movbe = true; 1968 movop = OPC_MOVBE_GyMy; 1969 } 1970 1971 switch (memop & MO_SSIZE) { 1972 case MO_UB: 1973 tcg_out_modrm_sib_offset(s, OPC_MOVZBL + seg, datalo, 1974 base, index, 0, ofs); 1975 break; 1976 case MO_SB: 1977 tcg_out_modrm_sib_offset(s, OPC_MOVSBL + rexw + seg, datalo, 1978 base, index, 0, ofs); 1979 break; 1980 case MO_UW: 1981 if (use_movbe) { 1982 /* There is no extending movbe; only low 16-bits are modified. */ 1983 if (datalo != base && datalo != index) { 1984 /* XOR breaks dependency chains. */ 1985 tgen_arithr(s, ARITH_XOR, datalo, datalo); 1986 tcg_out_modrm_sib_offset(s, OPC_MOVBE_GyMy + P_DATA16 + seg, 1987 datalo, base, index, 0, ofs); 1988 } else { 1989 tcg_out_modrm_sib_offset(s, OPC_MOVBE_GyMy + P_DATA16 + seg, 1990 datalo, base, index, 0, ofs); 1991 tcg_out_ext16u(s, datalo, datalo); 1992 } 1993 } else { 1994 tcg_out_modrm_sib_offset(s, OPC_MOVZWL + seg, datalo, 1995 base, index, 0, ofs); 1996 } 1997 break; 1998 case MO_SW: 1999 if (use_movbe) { 2000 tcg_out_modrm_sib_offset(s, OPC_MOVBE_GyMy + P_DATA16 + seg, 2001 datalo, base, index, 0, ofs); 2002 tcg_out_ext16s(s, datalo, datalo, rexw); 2003 } else { 2004 tcg_out_modrm_sib_offset(s, OPC_MOVSWL + rexw + seg, 2005 datalo, base, index, 0, ofs); 2006 } 2007 break; 2008 case MO_UL: 2009 tcg_out_modrm_sib_offset(s, movop + seg, datalo, base, index, 0, ofs); 2010 break; 2011#if TCG_TARGET_REG_BITS == 64 2012 case MO_SL: 2013 if (use_movbe) { 2014 tcg_out_modrm_sib_offset(s, OPC_MOVBE_GyMy + seg, datalo, 2015 base, index, 0, ofs); 2016 tcg_out_ext32s(s, datalo, datalo); 2017 } else { 2018 tcg_out_modrm_sib_offset(s, OPC_MOVSLQ + seg, datalo, 2019 base, index, 0, ofs); 2020 } 2021 break; 2022#endif 2023 case MO_Q: 2024 if (TCG_TARGET_REG_BITS == 64) { 2025 tcg_out_modrm_sib_offset(s, movop + P_REXW + seg, datalo, 2026 base, index, 0, ofs); 2027 } else { 2028 if (use_movbe) { 2029 TCGReg t = datalo; 2030 datalo = datahi; 2031 datahi = t; 2032 } 2033 if (base != datalo) { 2034 tcg_out_modrm_sib_offset(s, movop + seg, datalo, 2035 base, index, 0, ofs); 2036 tcg_out_modrm_sib_offset(s, movop + seg, datahi, 2037 base, index, 0, ofs + 4); 2038 } else { 2039 tcg_out_modrm_sib_offset(s, movop + seg, datahi, 2040 base, index, 0, ofs + 4); 2041 tcg_out_modrm_sib_offset(s, movop + seg, datalo, 2042 base, index, 0, ofs); 2043 } 2044 } 2045 break; 2046 default: 2047 g_assert_not_reached(); 2048 } 2049} 2050 2051/* XXX: qemu_ld and qemu_st could be modified to clobber only EDX and 2052 EAX. It will be useful once fixed registers globals are less 2053 common. */ 2054static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, bool is64) 2055{ 2056 TCGReg datalo, datahi, addrlo; 2057 TCGReg addrhi __attribute__((unused)); 2058 TCGMemOpIdx oi; 2059 MemOp opc; 2060#if defined(CONFIG_SOFTMMU) 2061 int mem_index; 2062 tcg_insn_unit *label_ptr[2]; 2063#endif 2064 2065 datalo = *args++; 2066 datahi = (TCG_TARGET_REG_BITS == 32 && is64 ? *args++ : 0); 2067 addrlo = *args++; 2068 addrhi = (TARGET_LONG_BITS > TCG_TARGET_REG_BITS ? *args++ : 0); 2069 oi = *args++; 2070 opc = get_memop(oi); 2071 2072#if defined(CONFIG_SOFTMMU) 2073 mem_index = get_mmuidx(oi); 2074 2075 tcg_out_tlb_load(s, addrlo, addrhi, mem_index, opc, 2076 label_ptr, offsetof(CPUTLBEntry, addr_read)); 2077 2078 /* TLB Hit. */ 2079 tcg_out_qemu_ld_direct(s, datalo, datahi, TCG_REG_L1, -1, 0, 0, is64, opc); 2080 2081 /* Record the current context of a load into ldst label */ 2082 add_qemu_ldst_label(s, true, is64, oi, datalo, datahi, addrlo, addrhi, 2083 s->code_ptr, label_ptr); 2084#else 2085 tcg_out_qemu_ld_direct(s, datalo, datahi, addrlo, x86_guest_base_index, 2086 x86_guest_base_offset, x86_guest_base_seg, 2087 is64, opc); 2088#endif 2089} 2090 2091static void tcg_out_qemu_st_direct(TCGContext *s, TCGReg datalo, TCGReg datahi, 2092 TCGReg base, int index, intptr_t ofs, 2093 int seg, MemOp memop) 2094{ 2095 bool use_movbe = false; 2096 int movop = OPC_MOVL_EvGv; 2097 2098 /* 2099 * Do big-endian stores with movbe or softmmu. 2100 * User-only without movbe will have its swapping done generically. 2101 */ 2102 if (memop & MO_BSWAP) { 2103 tcg_debug_assert(have_movbe); 2104 use_movbe = true; 2105 movop = OPC_MOVBE_MyGy; 2106 } 2107 2108 switch (memop & MO_SIZE) { 2109 case MO_8: 2110 /* This is handled with constraints on INDEX_op_qemu_st8_i32. */ 2111 tcg_debug_assert(TCG_TARGET_REG_BITS == 64 || datalo < 4); 2112 tcg_out_modrm_sib_offset(s, OPC_MOVB_EvGv + P_REXB_R + seg, 2113 datalo, base, index, 0, ofs); 2114 break; 2115 case MO_16: 2116 tcg_out_modrm_sib_offset(s, movop + P_DATA16 + seg, datalo, 2117 base, index, 0, ofs); 2118 break; 2119 case MO_32: 2120 tcg_out_modrm_sib_offset(s, movop + seg, datalo, base, index, 0, ofs); 2121 break; 2122 case MO_64: 2123 if (TCG_TARGET_REG_BITS == 64) { 2124 tcg_out_modrm_sib_offset(s, movop + P_REXW + seg, datalo, 2125 base, index, 0, ofs); 2126 } else { 2127 if (use_movbe) { 2128 TCGReg t = datalo; 2129 datalo = datahi; 2130 datahi = t; 2131 } 2132 tcg_out_modrm_sib_offset(s, movop + seg, datalo, 2133 base, index, 0, ofs); 2134 tcg_out_modrm_sib_offset(s, movop + seg, datahi, 2135 base, index, 0, ofs + 4); 2136 } 2137 break; 2138 default: 2139 g_assert_not_reached(); 2140 } 2141} 2142 2143static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, bool is64) 2144{ 2145 TCGReg datalo, datahi, addrlo; 2146 TCGReg addrhi __attribute__((unused)); 2147 TCGMemOpIdx oi; 2148 MemOp opc; 2149#if defined(CONFIG_SOFTMMU) 2150 int mem_index; 2151 tcg_insn_unit *label_ptr[2]; 2152#endif 2153 2154 datalo = *args++; 2155 datahi = (TCG_TARGET_REG_BITS == 32 && is64 ? *args++ : 0); 2156 addrlo = *args++; 2157 addrhi = (TARGET_LONG_BITS > TCG_TARGET_REG_BITS ? *args++ : 0); 2158 oi = *args++; 2159 opc = get_memop(oi); 2160 2161#if defined(CONFIG_SOFTMMU) 2162 mem_index = get_mmuidx(oi); 2163 2164 tcg_out_tlb_load(s, addrlo, addrhi, mem_index, opc, 2165 label_ptr, offsetof(CPUTLBEntry, addr_write)); 2166 2167 /* TLB Hit. */ 2168 tcg_out_qemu_st_direct(s, datalo, datahi, TCG_REG_L1, -1, 0, 0, opc); 2169 2170 /* Record the current context of a store into ldst label */ 2171 add_qemu_ldst_label(s, false, is64, oi, datalo, datahi, addrlo, addrhi, 2172 s->code_ptr, label_ptr); 2173#else 2174 tcg_out_qemu_st_direct(s, datalo, datahi, addrlo, x86_guest_base_index, 2175 x86_guest_base_offset, x86_guest_base_seg, opc); 2176#endif 2177} 2178 2179static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, 2180 const TCGArg *args, const int *const_args) 2181{ 2182 TCGArg a0, a1, a2; 2183 int c, const_a2, vexop, rexw = 0; 2184 2185#if TCG_TARGET_REG_BITS == 64 2186# define OP_32_64(x) \ 2187 case glue(glue(INDEX_op_, x), _i64): \ 2188 rexw = P_REXW; /* FALLTHRU */ \ 2189 case glue(glue(INDEX_op_, x), _i32) 2190#else 2191# define OP_32_64(x) \ 2192 case glue(glue(INDEX_op_, x), _i32) 2193#endif 2194 2195 /* Hoist the loads of the most common arguments. */ 2196 a0 = args[0]; 2197 a1 = args[1]; 2198 a2 = args[2]; 2199 const_a2 = const_args[2]; 2200 2201 switch (opc) { 2202 case INDEX_op_exit_tb: 2203 /* Reuse the zeroing that exists for goto_ptr. */ 2204 if (a0 == 0) { 2205 tcg_out_jmp(s, tcg_code_gen_epilogue); 2206 } else { 2207 tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_EAX, a0); 2208 tcg_out_jmp(s, tb_ret_addr); 2209 } 2210 break; 2211 case INDEX_op_goto_tb: 2212 if (s->tb_jmp_insn_offset) { 2213 /* direct jump method */ 2214 int gap; 2215 /* jump displacement must be aligned for atomic patching; 2216 * see if we need to add extra nops before jump 2217 */ 2218 gap = QEMU_ALIGN_PTR_UP(s->code_ptr + 1, 4) - s->code_ptr; 2219 if (gap != 1) { 2220 tcg_out_nopn(s, gap - 1); 2221 } 2222 tcg_out8(s, OPC_JMP_long); /* jmp im */ 2223 s->tb_jmp_insn_offset[a0] = tcg_current_code_size(s); 2224 tcg_out32(s, 0); 2225 } else { 2226 /* indirect jump method */ 2227 tcg_out_modrm_offset(s, OPC_GRP5, EXT5_JMPN_Ev, -1, 2228 (intptr_t)(s->tb_jmp_target_addr + a0)); 2229 } 2230 set_jmp_reset_offset(s, a0); 2231 break; 2232 case INDEX_op_goto_ptr: 2233 /* jmp to the given host address (could be epilogue) */ 2234 tcg_out_modrm(s, OPC_GRP5, EXT5_JMPN_Ev, a0); 2235 break; 2236 case INDEX_op_br: 2237 tcg_out_jxx(s, JCC_JMP, arg_label(a0), 0); 2238 break; 2239 OP_32_64(ld8u): 2240 /* Note that we can ignore REXW for the zero-extend to 64-bit. */ 2241 tcg_out_modrm_offset(s, OPC_MOVZBL, a0, a1, a2); 2242 break; 2243 OP_32_64(ld8s): 2244 tcg_out_modrm_offset(s, OPC_MOVSBL + rexw, a0, a1, a2); 2245 break; 2246 OP_32_64(ld16u): 2247 /* Note that we can ignore REXW for the zero-extend to 64-bit. */ 2248 tcg_out_modrm_offset(s, OPC_MOVZWL, a0, a1, a2); 2249 break; 2250 OP_32_64(ld16s): 2251 tcg_out_modrm_offset(s, OPC_MOVSWL + rexw, a0, a1, a2); 2252 break; 2253#if TCG_TARGET_REG_BITS == 64 2254 case INDEX_op_ld32u_i64: 2255#endif 2256 case INDEX_op_ld_i32: 2257 tcg_out_ld(s, TCG_TYPE_I32, a0, a1, a2); 2258 break; 2259 2260 OP_32_64(st8): 2261 if (const_args[0]) { 2262 tcg_out_modrm_offset(s, OPC_MOVB_EvIz, 0, a1, a2); 2263 tcg_out8(s, a0); 2264 } else { 2265 tcg_out_modrm_offset(s, OPC_MOVB_EvGv | P_REXB_R, a0, a1, a2); 2266 } 2267 break; 2268 OP_32_64(st16): 2269 if (const_args[0]) { 2270 tcg_out_modrm_offset(s, OPC_MOVL_EvIz | P_DATA16, 0, a1, a2); 2271 tcg_out16(s, a0); 2272 } else { 2273 tcg_out_modrm_offset(s, OPC_MOVL_EvGv | P_DATA16, a0, a1, a2); 2274 } 2275 break; 2276#if TCG_TARGET_REG_BITS == 64 2277 case INDEX_op_st32_i64: 2278#endif 2279 case INDEX_op_st_i32: 2280 if (const_args[0]) { 2281 tcg_out_modrm_offset(s, OPC_MOVL_EvIz, 0, a1, a2); 2282 tcg_out32(s, a0); 2283 } else { 2284 tcg_out_st(s, TCG_TYPE_I32, a0, a1, a2); 2285 } 2286 break; 2287 2288 OP_32_64(add): 2289 /* For 3-operand addition, use LEA. */ 2290 if (a0 != a1) { 2291 TCGArg c3 = 0; 2292 if (const_a2) { 2293 c3 = a2, a2 = -1; 2294 } else if (a0 == a2) { 2295 /* Watch out for dest = src + dest, since we've removed 2296 the matching constraint on the add. */ 2297 tgen_arithr(s, ARITH_ADD + rexw, a0, a1); 2298 break; 2299 } 2300 2301 tcg_out_modrm_sib_offset(s, OPC_LEA + rexw, a0, a1, a2, 0, c3); 2302 break; 2303 } 2304 c = ARITH_ADD; 2305 goto gen_arith; 2306 OP_32_64(sub): 2307 c = ARITH_SUB; 2308 goto gen_arith; 2309 OP_32_64(and): 2310 c = ARITH_AND; 2311 goto gen_arith; 2312 OP_32_64(or): 2313 c = ARITH_OR; 2314 goto gen_arith; 2315 OP_32_64(xor): 2316 c = ARITH_XOR; 2317 goto gen_arith; 2318 gen_arith: 2319 if (const_a2) { 2320 tgen_arithi(s, c + rexw, a0, a2, 0); 2321 } else { 2322 tgen_arithr(s, c + rexw, a0, a2); 2323 } 2324 break; 2325 2326 OP_32_64(andc): 2327 if (const_a2) { 2328 tcg_out_mov(s, rexw ? TCG_TYPE_I64 : TCG_TYPE_I32, a0, a1); 2329 tgen_arithi(s, ARITH_AND + rexw, a0, ~a2, 0); 2330 } else { 2331 tcg_out_vex_modrm(s, OPC_ANDN + rexw, a0, a2, a1); 2332 } 2333 break; 2334 2335 OP_32_64(mul): 2336 if (const_a2) { 2337 int32_t val; 2338 val = a2; 2339 if (val == (int8_t)val) { 2340 tcg_out_modrm(s, OPC_IMUL_GvEvIb + rexw, a0, a0); 2341 tcg_out8(s, val); 2342 } else { 2343 tcg_out_modrm(s, OPC_IMUL_GvEvIz + rexw, a0, a0); 2344 tcg_out32(s, val); 2345 } 2346 } else { 2347 tcg_out_modrm(s, OPC_IMUL_GvEv + rexw, a0, a2); 2348 } 2349 break; 2350 2351 OP_32_64(div2): 2352 tcg_out_modrm(s, OPC_GRP3_Ev + rexw, EXT3_IDIV, args[4]); 2353 break; 2354 OP_32_64(divu2): 2355 tcg_out_modrm(s, OPC_GRP3_Ev + rexw, EXT3_DIV, args[4]); 2356 break; 2357 2358 OP_32_64(shl): 2359 /* For small constant 3-operand shift, use LEA. */ 2360 if (const_a2 && a0 != a1 && (a2 - 1) < 3) { 2361 if (a2 - 1 == 0) { 2362 /* shl $1,a1,a0 -> lea (a1,a1),a0 */ 2363 tcg_out_modrm_sib_offset(s, OPC_LEA + rexw, a0, a1, a1, 0, 0); 2364 } else { 2365 /* shl $n,a1,a0 -> lea 0(,a1,n),a0 */ 2366 tcg_out_modrm_sib_offset(s, OPC_LEA + rexw, a0, -1, a1, a2, 0); 2367 } 2368 break; 2369 } 2370 c = SHIFT_SHL; 2371 vexop = OPC_SHLX; 2372 goto gen_shift_maybe_vex; 2373 OP_32_64(shr): 2374 c = SHIFT_SHR; 2375 vexop = OPC_SHRX; 2376 goto gen_shift_maybe_vex; 2377 OP_32_64(sar): 2378 c = SHIFT_SAR; 2379 vexop = OPC_SARX; 2380 goto gen_shift_maybe_vex; 2381 OP_32_64(rotl): 2382 c = SHIFT_ROL; 2383 goto gen_shift; 2384 OP_32_64(rotr): 2385 c = SHIFT_ROR; 2386 goto gen_shift; 2387 gen_shift_maybe_vex: 2388 if (have_bmi2) { 2389 if (!const_a2) { 2390 tcg_out_vex_modrm(s, vexop + rexw, a0, a2, a1); 2391 break; 2392 } 2393 tcg_out_mov(s, rexw ? TCG_TYPE_I64 : TCG_TYPE_I32, a0, a1); 2394 } 2395 /* FALLTHRU */ 2396 gen_shift: 2397 if (const_a2) { 2398 tcg_out_shifti(s, c + rexw, a0, a2); 2399 } else { 2400 tcg_out_modrm(s, OPC_SHIFT_cl + rexw, c, a0); 2401 } 2402 break; 2403 2404 OP_32_64(ctz): 2405 tcg_out_ctz(s, rexw, args[0], args[1], args[2], const_args[2]); 2406 break; 2407 OP_32_64(clz): 2408 tcg_out_clz(s, rexw, args[0], args[1], args[2], const_args[2]); 2409 break; 2410 OP_32_64(ctpop): 2411 tcg_out_modrm(s, OPC_POPCNT + rexw, a0, a1); 2412 break; 2413 2414 case INDEX_op_brcond_i32: 2415 tcg_out_brcond32(s, a2, a0, a1, const_args[1], arg_label(args[3]), 0); 2416 break; 2417 case INDEX_op_setcond_i32: 2418 tcg_out_setcond32(s, args[3], a0, a1, a2, const_a2); 2419 break; 2420 case INDEX_op_movcond_i32: 2421 tcg_out_movcond32(s, args[5], a0, a1, a2, const_a2, args[3]); 2422 break; 2423 2424 OP_32_64(bswap16): 2425 tcg_out_rolw_8(s, a0); 2426 break; 2427 OP_32_64(bswap32): 2428 tcg_out_bswap32(s, a0); 2429 break; 2430 2431 OP_32_64(neg): 2432 tcg_out_modrm(s, OPC_GRP3_Ev + rexw, EXT3_NEG, a0); 2433 break; 2434 OP_32_64(not): 2435 tcg_out_modrm(s, OPC_GRP3_Ev + rexw, EXT3_NOT, a0); 2436 break; 2437 2438 OP_32_64(ext8s): 2439 tcg_out_ext8s(s, a0, a1, rexw); 2440 break; 2441 OP_32_64(ext16s): 2442 tcg_out_ext16s(s, a0, a1, rexw); 2443 break; 2444 OP_32_64(ext8u): 2445 tcg_out_ext8u(s, a0, a1); 2446 break; 2447 OP_32_64(ext16u): 2448 tcg_out_ext16u(s, a0, a1); 2449 break; 2450 2451 case INDEX_op_qemu_ld_i32: 2452 tcg_out_qemu_ld(s, args, 0); 2453 break; 2454 case INDEX_op_qemu_ld_i64: 2455 tcg_out_qemu_ld(s, args, 1); 2456 break; 2457 case INDEX_op_qemu_st_i32: 2458 case INDEX_op_qemu_st8_i32: 2459 tcg_out_qemu_st(s, args, 0); 2460 break; 2461 case INDEX_op_qemu_st_i64: 2462 tcg_out_qemu_st(s, args, 1); 2463 break; 2464 2465 OP_32_64(mulu2): 2466 tcg_out_modrm(s, OPC_GRP3_Ev + rexw, EXT3_MUL, args[3]); 2467 break; 2468 OP_32_64(muls2): 2469 tcg_out_modrm(s, OPC_GRP3_Ev + rexw, EXT3_IMUL, args[3]); 2470 break; 2471 OP_32_64(add2): 2472 if (const_args[4]) { 2473 tgen_arithi(s, ARITH_ADD + rexw, a0, args[4], 1); 2474 } else { 2475 tgen_arithr(s, ARITH_ADD + rexw, a0, args[4]); 2476 } 2477 if (const_args[5]) { 2478 tgen_arithi(s, ARITH_ADC + rexw, a1, args[5], 1); 2479 } else { 2480 tgen_arithr(s, ARITH_ADC + rexw, a1, args[5]); 2481 } 2482 break; 2483 OP_32_64(sub2): 2484 if (const_args[4]) { 2485 tgen_arithi(s, ARITH_SUB + rexw, a0, args[4], 1); 2486 } else { 2487 tgen_arithr(s, ARITH_SUB + rexw, a0, args[4]); 2488 } 2489 if (const_args[5]) { 2490 tgen_arithi(s, ARITH_SBB + rexw, a1, args[5], 1); 2491 } else { 2492 tgen_arithr(s, ARITH_SBB + rexw, a1, args[5]); 2493 } 2494 break; 2495 2496#if TCG_TARGET_REG_BITS == 32 2497 case INDEX_op_brcond2_i32: 2498 tcg_out_brcond2(s, args, const_args, 0); 2499 break; 2500 case INDEX_op_setcond2_i32: 2501 tcg_out_setcond2(s, args, const_args); 2502 break; 2503#else /* TCG_TARGET_REG_BITS == 64 */ 2504 case INDEX_op_ld32s_i64: 2505 tcg_out_modrm_offset(s, OPC_MOVSLQ, a0, a1, a2); 2506 break; 2507 case INDEX_op_ld_i64: 2508 tcg_out_ld(s, TCG_TYPE_I64, a0, a1, a2); 2509 break; 2510 case INDEX_op_st_i64: 2511 if (const_args[0]) { 2512 tcg_out_modrm_offset(s, OPC_MOVL_EvIz | P_REXW, 0, a1, a2); 2513 tcg_out32(s, a0); 2514 } else { 2515 tcg_out_st(s, TCG_TYPE_I64, a0, a1, a2); 2516 } 2517 break; 2518 2519 case INDEX_op_brcond_i64: 2520 tcg_out_brcond64(s, a2, a0, a1, const_args[1], arg_label(args[3]), 0); 2521 break; 2522 case INDEX_op_setcond_i64: 2523 tcg_out_setcond64(s, args[3], a0, a1, a2, const_a2); 2524 break; 2525 case INDEX_op_movcond_i64: 2526 tcg_out_movcond64(s, args[5], a0, a1, a2, const_a2, args[3]); 2527 break; 2528 2529 case INDEX_op_bswap64_i64: 2530 tcg_out_bswap64(s, a0); 2531 break; 2532 case INDEX_op_extu_i32_i64: 2533 case INDEX_op_ext32u_i64: 2534 case INDEX_op_extrl_i64_i32: 2535 tcg_out_ext32u(s, a0, a1); 2536 break; 2537 case INDEX_op_ext_i32_i64: 2538 case INDEX_op_ext32s_i64: 2539 tcg_out_ext32s(s, a0, a1); 2540 break; 2541 case INDEX_op_extrh_i64_i32: 2542 tcg_out_shifti(s, SHIFT_SHR + P_REXW, a0, 32); 2543 break; 2544#endif 2545 2546 OP_32_64(deposit): 2547 if (args[3] == 0 && args[4] == 8) { 2548 /* load bits 0..7 */ 2549 tcg_out_modrm(s, OPC_MOVB_EvGv | P_REXB_R | P_REXB_RM, a2, a0); 2550 } else if (args[3] == 8 && args[4] == 8) { 2551 /* load bits 8..15 */ 2552 tcg_out_modrm(s, OPC_MOVB_EvGv, a2, a0 + 4); 2553 } else if (args[3] == 0 && args[4] == 16) { 2554 /* load bits 0..15 */ 2555 tcg_out_modrm(s, OPC_MOVL_EvGv | P_DATA16, a2, a0); 2556 } else { 2557 tcg_abort(); 2558 } 2559 break; 2560 2561 case INDEX_op_extract_i64: 2562 if (a2 + args[3] == 32) { 2563 /* This is a 32-bit zero-extending right shift. */ 2564 tcg_out_mov(s, TCG_TYPE_I32, a0, a1); 2565 tcg_out_shifti(s, SHIFT_SHR, a0, a2); 2566 break; 2567 } 2568 /* FALLTHRU */ 2569 case INDEX_op_extract_i32: 2570 /* On the off-chance that we can use the high-byte registers. 2571 Otherwise we emit the same ext16 + shift pattern that we 2572 would have gotten from the normal tcg-op.c expansion. */ 2573 tcg_debug_assert(a2 == 8 && args[3] == 8); 2574 if (a1 < 4 && a0 < 8) { 2575 tcg_out_modrm(s, OPC_MOVZBL, a0, a1 + 4); 2576 } else { 2577 tcg_out_ext16u(s, a0, a1); 2578 tcg_out_shifti(s, SHIFT_SHR, a0, 8); 2579 } 2580 break; 2581 2582 case INDEX_op_sextract_i32: 2583 /* We don't implement sextract_i64, as we cannot sign-extend to 2584 64-bits without using the REX prefix that explicitly excludes 2585 access to the high-byte registers. */ 2586 tcg_debug_assert(a2 == 8 && args[3] == 8); 2587 if (a1 < 4 && a0 < 8) { 2588 tcg_out_modrm(s, OPC_MOVSBL, a0, a1 + 4); 2589 } else { 2590 tcg_out_ext16s(s, a0, a1, 0); 2591 tcg_out_shifti(s, SHIFT_SAR, a0, 8); 2592 } 2593 break; 2594 2595 OP_32_64(extract2): 2596 /* Note that SHRD outputs to the r/m operand. */ 2597 tcg_out_modrm(s, OPC_SHRD_Ib + rexw, a2, a0); 2598 tcg_out8(s, args[3]); 2599 break; 2600 2601 case INDEX_op_mb: 2602 tcg_out_mb(s, a0); 2603 break; 2604 case INDEX_op_mov_i32: /* Always emitted via tcg_out_mov. */ 2605 case INDEX_op_mov_i64: 2606 case INDEX_op_call: /* Always emitted via tcg_out_call. */ 2607 default: 2608 tcg_abort(); 2609 } 2610 2611#undef OP_32_64 2612} 2613 2614static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc, 2615 unsigned vecl, unsigned vece, 2616 const TCGArg *args, const int *const_args) 2617{ 2618 static int const add_insn[4] = { 2619 OPC_PADDB, OPC_PADDW, OPC_PADDD, OPC_PADDQ 2620 }; 2621 static int const ssadd_insn[4] = { 2622 OPC_PADDSB, OPC_PADDSW, OPC_UD2, OPC_UD2 2623 }; 2624 static int const usadd_insn[4] = { 2625 OPC_PADDUB, OPC_PADDUW, OPC_UD2, OPC_UD2 2626 }; 2627 static int const sub_insn[4] = { 2628 OPC_PSUBB, OPC_PSUBW, OPC_PSUBD, OPC_PSUBQ 2629 }; 2630 static int const sssub_insn[4] = { 2631 OPC_PSUBSB, OPC_PSUBSW, OPC_UD2, OPC_UD2 2632 }; 2633 static int const ussub_insn[4] = { 2634 OPC_PSUBUB, OPC_PSUBUW, OPC_UD2, OPC_UD2 2635 }; 2636 static int const mul_insn[4] = { 2637 OPC_UD2, OPC_PMULLW, OPC_PMULLD, OPC_UD2 2638 }; 2639 static int const shift_imm_insn[4] = { 2640 OPC_UD2, OPC_PSHIFTW_Ib, OPC_PSHIFTD_Ib, OPC_PSHIFTQ_Ib 2641 }; 2642 static int const cmpeq_insn[4] = { 2643 OPC_PCMPEQB, OPC_PCMPEQW, OPC_PCMPEQD, OPC_PCMPEQQ 2644 }; 2645 static int const cmpgt_insn[4] = { 2646 OPC_PCMPGTB, OPC_PCMPGTW, OPC_PCMPGTD, OPC_PCMPGTQ 2647 }; 2648 static int const punpckl_insn[4] = { 2649 OPC_PUNPCKLBW, OPC_PUNPCKLWD, OPC_PUNPCKLDQ, OPC_PUNPCKLQDQ 2650 }; 2651 static int const punpckh_insn[4] = { 2652 OPC_PUNPCKHBW, OPC_PUNPCKHWD, OPC_PUNPCKHDQ, OPC_PUNPCKHQDQ 2653 }; 2654 static int const packss_insn[4] = { 2655 OPC_PACKSSWB, OPC_PACKSSDW, OPC_UD2, OPC_UD2 2656 }; 2657 static int const packus_insn[4] = { 2658 OPC_PACKUSWB, OPC_PACKUSDW, OPC_UD2, OPC_UD2 2659 }; 2660 static int const smin_insn[4] = { 2661 OPC_PMINSB, OPC_PMINSW, OPC_PMINSD, OPC_UD2 2662 }; 2663 static int const smax_insn[4] = { 2664 OPC_PMAXSB, OPC_PMAXSW, OPC_PMAXSD, OPC_UD2 2665 }; 2666 static int const umin_insn[4] = { 2667 OPC_PMINUB, OPC_PMINUW, OPC_PMINUD, OPC_UD2 2668 }; 2669 static int const umax_insn[4] = { 2670 OPC_PMAXUB, OPC_PMAXUW, OPC_PMAXUD, OPC_UD2 2671 }; 2672 static int const shlv_insn[4] = { 2673 /* TODO: AVX512 adds support for MO_16. */ 2674 OPC_UD2, OPC_UD2, OPC_VPSLLVD, OPC_VPSLLVQ 2675 }; 2676 static int const shrv_insn[4] = { 2677 /* TODO: AVX512 adds support for MO_16. */ 2678 OPC_UD2, OPC_UD2, OPC_VPSRLVD, OPC_VPSRLVQ 2679 }; 2680 static int const sarv_insn[4] = { 2681 /* TODO: AVX512 adds support for MO_16, MO_64. */ 2682 OPC_UD2, OPC_UD2, OPC_VPSRAVD, OPC_UD2 2683 }; 2684 static int const shls_insn[4] = { 2685 OPC_UD2, OPC_PSLLW, OPC_PSLLD, OPC_PSLLQ 2686 }; 2687 static int const shrs_insn[4] = { 2688 OPC_UD2, OPC_PSRLW, OPC_PSRLD, OPC_PSRLQ 2689 }; 2690 static int const sars_insn[4] = { 2691 OPC_UD2, OPC_PSRAW, OPC_PSRAD, OPC_UD2 2692 }; 2693 static int const abs_insn[4] = { 2694 /* TODO: AVX512 adds support for MO_64. */ 2695 OPC_PABSB, OPC_PABSW, OPC_PABSD, OPC_UD2 2696 }; 2697 2698 TCGType type = vecl + TCG_TYPE_V64; 2699 int insn, sub; 2700 TCGArg a0, a1, a2; 2701 2702 a0 = args[0]; 2703 a1 = args[1]; 2704 a2 = args[2]; 2705 2706 switch (opc) { 2707 case INDEX_op_add_vec: 2708 insn = add_insn[vece]; 2709 goto gen_simd; 2710 case INDEX_op_ssadd_vec: 2711 insn = ssadd_insn[vece]; 2712 goto gen_simd; 2713 case INDEX_op_usadd_vec: 2714 insn = usadd_insn[vece]; 2715 goto gen_simd; 2716 case INDEX_op_sub_vec: 2717 insn = sub_insn[vece]; 2718 goto gen_simd; 2719 case INDEX_op_sssub_vec: 2720 insn = sssub_insn[vece]; 2721 goto gen_simd; 2722 case INDEX_op_ussub_vec: 2723 insn = ussub_insn[vece]; 2724 goto gen_simd; 2725 case INDEX_op_mul_vec: 2726 insn = mul_insn[vece]; 2727 goto gen_simd; 2728 case INDEX_op_and_vec: 2729 insn = OPC_PAND; 2730 goto gen_simd; 2731 case INDEX_op_or_vec: 2732 insn = OPC_POR; 2733 goto gen_simd; 2734 case INDEX_op_xor_vec: 2735 insn = OPC_PXOR; 2736 goto gen_simd; 2737 case INDEX_op_smin_vec: 2738 insn = smin_insn[vece]; 2739 goto gen_simd; 2740 case INDEX_op_umin_vec: 2741 insn = umin_insn[vece]; 2742 goto gen_simd; 2743 case INDEX_op_smax_vec: 2744 insn = smax_insn[vece]; 2745 goto gen_simd; 2746 case INDEX_op_umax_vec: 2747 insn = umax_insn[vece]; 2748 goto gen_simd; 2749 case INDEX_op_shlv_vec: 2750 insn = shlv_insn[vece]; 2751 goto gen_simd; 2752 case INDEX_op_shrv_vec: 2753 insn = shrv_insn[vece]; 2754 goto gen_simd; 2755 case INDEX_op_sarv_vec: 2756 insn = sarv_insn[vece]; 2757 goto gen_simd; 2758 case INDEX_op_shls_vec: 2759 insn = shls_insn[vece]; 2760 goto gen_simd; 2761 case INDEX_op_shrs_vec: 2762 insn = shrs_insn[vece]; 2763 goto gen_simd; 2764 case INDEX_op_sars_vec: 2765 insn = sars_insn[vece]; 2766 goto gen_simd; 2767 case INDEX_op_x86_punpckl_vec: 2768 insn = punpckl_insn[vece]; 2769 goto gen_simd; 2770 case INDEX_op_x86_punpckh_vec: 2771 insn = punpckh_insn[vece]; 2772 goto gen_simd; 2773 case INDEX_op_x86_packss_vec: 2774 insn = packss_insn[vece]; 2775 goto gen_simd; 2776 case INDEX_op_x86_packus_vec: 2777 insn = packus_insn[vece]; 2778 goto gen_simd; 2779#if TCG_TARGET_REG_BITS == 32 2780 case INDEX_op_dup2_vec: 2781 /* First merge the two 32-bit inputs to a single 64-bit element. */ 2782 tcg_out_vex_modrm(s, OPC_PUNPCKLDQ, a0, a1, a2); 2783 /* Then replicate the 64-bit elements across the rest of the vector. */ 2784 if (type != TCG_TYPE_V64) { 2785 tcg_out_dup_vec(s, type, MO_64, a0, a0); 2786 } 2787 break; 2788#endif 2789 case INDEX_op_abs_vec: 2790 insn = abs_insn[vece]; 2791 a2 = a1; 2792 a1 = 0; 2793 goto gen_simd; 2794 gen_simd: 2795 tcg_debug_assert(insn != OPC_UD2); 2796 if (type == TCG_TYPE_V256) { 2797 insn |= P_VEXL; 2798 } 2799 tcg_out_vex_modrm(s, insn, a0, a1, a2); 2800 break; 2801 2802 case INDEX_op_cmp_vec: 2803 sub = args[3]; 2804 if (sub == TCG_COND_EQ) { 2805 insn = cmpeq_insn[vece]; 2806 } else if (sub == TCG_COND_GT) { 2807 insn = cmpgt_insn[vece]; 2808 } else { 2809 g_assert_not_reached(); 2810 } 2811 goto gen_simd; 2812 2813 case INDEX_op_andc_vec: 2814 insn = OPC_PANDN; 2815 if (type == TCG_TYPE_V256) { 2816 insn |= P_VEXL; 2817 } 2818 tcg_out_vex_modrm(s, insn, a0, a2, a1); 2819 break; 2820 2821 case INDEX_op_shli_vec: 2822 sub = 6; 2823 goto gen_shift; 2824 case INDEX_op_shri_vec: 2825 sub = 2; 2826 goto gen_shift; 2827 case INDEX_op_sari_vec: 2828 tcg_debug_assert(vece != MO_64); 2829 sub = 4; 2830 gen_shift: 2831 tcg_debug_assert(vece != MO_8); 2832 insn = shift_imm_insn[vece]; 2833 if (type == TCG_TYPE_V256) { 2834 insn |= P_VEXL; 2835 } 2836 tcg_out_vex_modrm(s, insn, sub, a0, a1); 2837 tcg_out8(s, a2); 2838 break; 2839 2840 case INDEX_op_ld_vec: 2841 tcg_out_ld(s, type, a0, a1, a2); 2842 break; 2843 case INDEX_op_st_vec: 2844 tcg_out_st(s, type, a0, a1, a2); 2845 break; 2846 case INDEX_op_dupm_vec: 2847 tcg_out_dupm_vec(s, type, vece, a0, a1, a2); 2848 break; 2849 2850 case INDEX_op_x86_shufps_vec: 2851 insn = OPC_SHUFPS; 2852 sub = args[3]; 2853 goto gen_simd_imm8; 2854 case INDEX_op_x86_blend_vec: 2855 if (vece == MO_16) { 2856 insn = OPC_PBLENDW; 2857 } else if (vece == MO_32) { 2858 insn = (have_avx2 ? OPC_VPBLENDD : OPC_BLENDPS); 2859 } else { 2860 g_assert_not_reached(); 2861 } 2862 sub = args[3]; 2863 goto gen_simd_imm8; 2864 case INDEX_op_x86_vperm2i128_vec: 2865 insn = OPC_VPERM2I128; 2866 sub = args[3]; 2867 goto gen_simd_imm8; 2868 gen_simd_imm8: 2869 if (type == TCG_TYPE_V256) { 2870 insn |= P_VEXL; 2871 } 2872 tcg_out_vex_modrm(s, insn, a0, a1, a2); 2873 tcg_out8(s, sub); 2874 break; 2875 2876 case INDEX_op_x86_vpblendvb_vec: 2877 insn = OPC_VPBLENDVB; 2878 if (type == TCG_TYPE_V256) { 2879 insn |= P_VEXL; 2880 } 2881 tcg_out_vex_modrm(s, insn, a0, a1, a2); 2882 tcg_out8(s, args[3] << 4); 2883 break; 2884 2885 case INDEX_op_x86_psrldq_vec: 2886 tcg_out_vex_modrm(s, OPC_GRP14, 3, a0, a1); 2887 tcg_out8(s, a2); 2888 break; 2889 2890 case INDEX_op_mov_vec: /* Always emitted via tcg_out_mov. */ 2891 case INDEX_op_dup_vec: /* Always emitted via tcg_out_dup_vec. */ 2892 default: 2893 g_assert_not_reached(); 2894 } 2895} 2896 2897static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op) 2898{ 2899 switch (op) { 2900 case INDEX_op_goto_ptr: 2901 return C_O0_I1(r); 2902 2903 case INDEX_op_ld8u_i32: 2904 case INDEX_op_ld8u_i64: 2905 case INDEX_op_ld8s_i32: 2906 case INDEX_op_ld8s_i64: 2907 case INDEX_op_ld16u_i32: 2908 case INDEX_op_ld16u_i64: 2909 case INDEX_op_ld16s_i32: 2910 case INDEX_op_ld16s_i64: 2911 case INDEX_op_ld_i32: 2912 case INDEX_op_ld32u_i64: 2913 case INDEX_op_ld32s_i64: 2914 case INDEX_op_ld_i64: 2915 return C_O1_I1(r, r); 2916 2917 case INDEX_op_st8_i32: 2918 case INDEX_op_st8_i64: 2919 return C_O0_I2(qi, r); 2920 2921 case INDEX_op_st16_i32: 2922 case INDEX_op_st16_i64: 2923 case INDEX_op_st_i32: 2924 case INDEX_op_st32_i64: 2925 return C_O0_I2(ri, r); 2926 2927 case INDEX_op_st_i64: 2928 return C_O0_I2(re, r); 2929 2930 case INDEX_op_add_i32: 2931 case INDEX_op_add_i64: 2932 return C_O1_I2(r, r, re); 2933 2934 case INDEX_op_sub_i32: 2935 case INDEX_op_sub_i64: 2936 case INDEX_op_mul_i32: 2937 case INDEX_op_mul_i64: 2938 case INDEX_op_or_i32: 2939 case INDEX_op_or_i64: 2940 case INDEX_op_xor_i32: 2941 case INDEX_op_xor_i64: 2942 return C_O1_I2(r, 0, re); 2943 2944 case INDEX_op_and_i32: 2945 case INDEX_op_and_i64: 2946 return C_O1_I2(r, 0, reZ); 2947 2948 case INDEX_op_andc_i32: 2949 case INDEX_op_andc_i64: 2950 return C_O1_I2(r, r, rI); 2951 2952 case INDEX_op_shl_i32: 2953 case INDEX_op_shl_i64: 2954 case INDEX_op_shr_i32: 2955 case INDEX_op_shr_i64: 2956 case INDEX_op_sar_i32: 2957 case INDEX_op_sar_i64: 2958 return have_bmi2 ? C_O1_I2(r, r, ri) : C_O1_I2(r, 0, ci); 2959 2960 case INDEX_op_rotl_i32: 2961 case INDEX_op_rotl_i64: 2962 case INDEX_op_rotr_i32: 2963 case INDEX_op_rotr_i64: 2964 return C_O1_I2(r, 0, ci); 2965 2966 case INDEX_op_brcond_i32: 2967 case INDEX_op_brcond_i64: 2968 return C_O0_I2(r, re); 2969 2970 case INDEX_op_bswap16_i32: 2971 case INDEX_op_bswap16_i64: 2972 case INDEX_op_bswap32_i32: 2973 case INDEX_op_bswap32_i64: 2974 case INDEX_op_bswap64_i64: 2975 case INDEX_op_neg_i32: 2976 case INDEX_op_neg_i64: 2977 case INDEX_op_not_i32: 2978 case INDEX_op_not_i64: 2979 case INDEX_op_extrh_i64_i32: 2980 return C_O1_I1(r, 0); 2981 2982 case INDEX_op_ext8s_i32: 2983 case INDEX_op_ext8s_i64: 2984 case INDEX_op_ext8u_i32: 2985 case INDEX_op_ext8u_i64: 2986 return C_O1_I1(r, q); 2987 2988 case INDEX_op_ext16s_i32: 2989 case INDEX_op_ext16s_i64: 2990 case INDEX_op_ext16u_i32: 2991 case INDEX_op_ext16u_i64: 2992 case INDEX_op_ext32s_i64: 2993 case INDEX_op_ext32u_i64: 2994 case INDEX_op_ext_i32_i64: 2995 case INDEX_op_extu_i32_i64: 2996 case INDEX_op_extrl_i64_i32: 2997 case INDEX_op_extract_i32: 2998 case INDEX_op_extract_i64: 2999 case INDEX_op_sextract_i32: 3000 case INDEX_op_ctpop_i32: 3001 case INDEX_op_ctpop_i64: 3002 return C_O1_I1(r, r); 3003 3004 case INDEX_op_extract2_i32: 3005 case INDEX_op_extract2_i64: 3006 return C_O1_I2(r, 0, r); 3007 3008 case INDEX_op_deposit_i32: 3009 case INDEX_op_deposit_i64: 3010 return C_O1_I2(Q, 0, Q); 3011 3012 case INDEX_op_setcond_i32: 3013 case INDEX_op_setcond_i64: 3014 return C_O1_I2(q, r, re); 3015 3016 case INDEX_op_movcond_i32: 3017 case INDEX_op_movcond_i64: 3018 return C_O1_I4(r, r, re, r, 0); 3019 3020 case INDEX_op_div2_i32: 3021 case INDEX_op_div2_i64: 3022 case INDEX_op_divu2_i32: 3023 case INDEX_op_divu2_i64: 3024 return C_O2_I3(a, d, 0, 1, r); 3025 3026 case INDEX_op_mulu2_i32: 3027 case INDEX_op_mulu2_i64: 3028 case INDEX_op_muls2_i32: 3029 case INDEX_op_muls2_i64: 3030 return C_O2_I2(a, d, a, r); 3031 3032 case INDEX_op_add2_i32: 3033 case INDEX_op_add2_i64: 3034 case INDEX_op_sub2_i32: 3035 case INDEX_op_sub2_i64: 3036 return C_O2_I4(r, r, 0, 1, re, re); 3037 3038 case INDEX_op_ctz_i32: 3039 case INDEX_op_ctz_i64: 3040 return have_bmi1 ? C_N1_I2(r, r, rW) : C_N1_I2(r, r, r); 3041 3042 case INDEX_op_clz_i32: 3043 case INDEX_op_clz_i64: 3044 return have_lzcnt ? C_N1_I2(r, r, rW) : C_N1_I2(r, r, r); 3045 3046 case INDEX_op_qemu_ld_i32: 3047 return (TARGET_LONG_BITS <= TCG_TARGET_REG_BITS 3048 ? C_O1_I1(r, L) : C_O1_I2(r, L, L)); 3049 3050 case INDEX_op_qemu_st_i32: 3051 return (TARGET_LONG_BITS <= TCG_TARGET_REG_BITS 3052 ? C_O0_I2(L, L) : C_O0_I3(L, L, L)); 3053 case INDEX_op_qemu_st8_i32: 3054 return (TARGET_LONG_BITS <= TCG_TARGET_REG_BITS 3055 ? C_O0_I2(s, L) : C_O0_I3(s, L, L)); 3056 3057 case INDEX_op_qemu_ld_i64: 3058 return (TCG_TARGET_REG_BITS == 64 ? C_O1_I1(r, L) 3059 : TARGET_LONG_BITS <= TCG_TARGET_REG_BITS ? C_O2_I1(r, r, L) 3060 : C_O2_I2(r, r, L, L)); 3061 3062 case INDEX_op_qemu_st_i64: 3063 return (TCG_TARGET_REG_BITS == 64 ? C_O0_I2(L, L) 3064 : TARGET_LONG_BITS <= TCG_TARGET_REG_BITS ? C_O0_I3(L, L, L) 3065 : C_O0_I4(L, L, L, L)); 3066 3067 case INDEX_op_brcond2_i32: 3068 return C_O0_I4(r, r, ri, ri); 3069 3070 case INDEX_op_setcond2_i32: 3071 return C_O1_I4(r, r, r, ri, ri); 3072 3073 case INDEX_op_ld_vec: 3074 case INDEX_op_dupm_vec: 3075 return C_O1_I1(x, r); 3076 3077 case INDEX_op_st_vec: 3078 return C_O0_I2(x, r); 3079 3080 case INDEX_op_add_vec: 3081 case INDEX_op_sub_vec: 3082 case INDEX_op_mul_vec: 3083 case INDEX_op_and_vec: 3084 case INDEX_op_or_vec: 3085 case INDEX_op_xor_vec: 3086 case INDEX_op_andc_vec: 3087 case INDEX_op_ssadd_vec: 3088 case INDEX_op_usadd_vec: 3089 case INDEX_op_sssub_vec: 3090 case INDEX_op_ussub_vec: 3091 case INDEX_op_smin_vec: 3092 case INDEX_op_umin_vec: 3093 case INDEX_op_smax_vec: 3094 case INDEX_op_umax_vec: 3095 case INDEX_op_shlv_vec: 3096 case INDEX_op_shrv_vec: 3097 case INDEX_op_sarv_vec: 3098 case INDEX_op_shls_vec: 3099 case INDEX_op_shrs_vec: 3100 case INDEX_op_sars_vec: 3101 case INDEX_op_rotls_vec: 3102 case INDEX_op_cmp_vec: 3103 case INDEX_op_x86_shufps_vec: 3104 case INDEX_op_x86_blend_vec: 3105 case INDEX_op_x86_packss_vec: 3106 case INDEX_op_x86_packus_vec: 3107 case INDEX_op_x86_vperm2i128_vec: 3108 case INDEX_op_x86_punpckl_vec: 3109 case INDEX_op_x86_punpckh_vec: 3110#if TCG_TARGET_REG_BITS == 32 3111 case INDEX_op_dup2_vec: 3112#endif 3113 return C_O1_I2(x, x, x); 3114 3115 case INDEX_op_abs_vec: 3116 case INDEX_op_dup_vec: 3117 case INDEX_op_shli_vec: 3118 case INDEX_op_shri_vec: 3119 case INDEX_op_sari_vec: 3120 case INDEX_op_x86_psrldq_vec: 3121 return C_O1_I1(x, x); 3122 3123 case INDEX_op_x86_vpblendvb_vec: 3124 return C_O1_I3(x, x, x, x); 3125 3126 default: 3127 g_assert_not_reached(); 3128 } 3129} 3130 3131int tcg_can_emit_vec_op(TCGOpcode opc, TCGType type, unsigned vece) 3132{ 3133 switch (opc) { 3134 case INDEX_op_add_vec: 3135 case INDEX_op_sub_vec: 3136 case INDEX_op_and_vec: 3137 case INDEX_op_or_vec: 3138 case INDEX_op_xor_vec: 3139 case INDEX_op_andc_vec: 3140 return 1; 3141 case INDEX_op_rotli_vec: 3142 case INDEX_op_cmp_vec: 3143 case INDEX_op_cmpsel_vec: 3144 return -1; 3145 3146 case INDEX_op_shli_vec: 3147 case INDEX_op_shri_vec: 3148 /* We must expand the operation for MO_8. */ 3149 return vece == MO_8 ? -1 : 1; 3150 3151 case INDEX_op_sari_vec: 3152 /* We must expand the operation for MO_8. */ 3153 if (vece == MO_8) { 3154 return -1; 3155 } 3156 /* We can emulate this for MO_64, but it does not pay off 3157 unless we're producing at least 4 values. */ 3158 if (vece == MO_64) { 3159 return type >= TCG_TYPE_V256 ? -1 : 0; 3160 } 3161 return 1; 3162 3163 case INDEX_op_shls_vec: 3164 case INDEX_op_shrs_vec: 3165 return vece >= MO_16; 3166 case INDEX_op_sars_vec: 3167 return vece >= MO_16 && vece <= MO_32; 3168 case INDEX_op_rotls_vec: 3169 return vece >= MO_16 ? -1 : 0; 3170 3171 case INDEX_op_shlv_vec: 3172 case INDEX_op_shrv_vec: 3173 return have_avx2 && vece >= MO_32; 3174 case INDEX_op_sarv_vec: 3175 return have_avx2 && vece == MO_32; 3176 case INDEX_op_rotlv_vec: 3177 case INDEX_op_rotrv_vec: 3178 return have_avx2 && vece >= MO_32 ? -1 : 0; 3179 3180 case INDEX_op_mul_vec: 3181 if (vece == MO_8) { 3182 /* We can expand the operation for MO_8. */ 3183 return -1; 3184 } 3185 if (vece == MO_64) { 3186 return 0; 3187 } 3188 return 1; 3189 3190 case INDEX_op_ssadd_vec: 3191 case INDEX_op_usadd_vec: 3192 case INDEX_op_sssub_vec: 3193 case INDEX_op_ussub_vec: 3194 return vece <= MO_16; 3195 case INDEX_op_smin_vec: 3196 case INDEX_op_smax_vec: 3197 case INDEX_op_umin_vec: 3198 case INDEX_op_umax_vec: 3199 case INDEX_op_abs_vec: 3200 return vece <= MO_32; 3201 3202 default: 3203 return 0; 3204 } 3205} 3206 3207static void expand_vec_shi(TCGType type, unsigned vece, TCGOpcode opc, 3208 TCGv_vec v0, TCGv_vec v1, TCGArg imm) 3209{ 3210 TCGv_vec t1, t2; 3211 3212 tcg_debug_assert(vece == MO_8); 3213 3214 t1 = tcg_temp_new_vec(type); 3215 t2 = tcg_temp_new_vec(type); 3216 3217 /* 3218 * Unpack to W, shift, and repack. Tricky bits: 3219 * (1) Use punpck*bw x,x to produce DDCCBBAA, 3220 * i.e. duplicate in other half of the 16-bit lane. 3221 * (2) For right-shift, add 8 so that the high half of the lane 3222 * becomes zero. For left-shift, and left-rotate, we must 3223 * shift up and down again. 3224 * (3) Step 2 leaves high half zero such that PACKUSWB 3225 * (pack with unsigned saturation) does not modify 3226 * the quantity. 3227 */ 3228 vec_gen_3(INDEX_op_x86_punpckl_vec, type, MO_8, 3229 tcgv_vec_arg(t1), tcgv_vec_arg(v1), tcgv_vec_arg(v1)); 3230 vec_gen_3(INDEX_op_x86_punpckh_vec, type, MO_8, 3231 tcgv_vec_arg(t2), tcgv_vec_arg(v1), tcgv_vec_arg(v1)); 3232 3233 if (opc != INDEX_op_rotli_vec) { 3234 imm += 8; 3235 } 3236 if (opc == INDEX_op_shri_vec) { 3237 tcg_gen_shri_vec(MO_16, t1, t1, imm); 3238 tcg_gen_shri_vec(MO_16, t2, t2, imm); 3239 } else { 3240 tcg_gen_shli_vec(MO_16, t1, t1, imm); 3241 tcg_gen_shli_vec(MO_16, t2, t2, imm); 3242 tcg_gen_shri_vec(MO_16, t1, t1, 8); 3243 tcg_gen_shri_vec(MO_16, t2, t2, 8); 3244 } 3245 3246 vec_gen_3(INDEX_op_x86_packus_vec, type, MO_8, 3247 tcgv_vec_arg(v0), tcgv_vec_arg(t1), tcgv_vec_arg(t2)); 3248 tcg_temp_free_vec(t1); 3249 tcg_temp_free_vec(t2); 3250} 3251 3252static void expand_vec_sari(TCGType type, unsigned vece, 3253 TCGv_vec v0, TCGv_vec v1, TCGArg imm) 3254{ 3255 TCGv_vec t1, t2; 3256 3257 switch (vece) { 3258 case MO_8: 3259 /* Unpack to W, shift, and repack, as in expand_vec_shi. */ 3260 t1 = tcg_temp_new_vec(type); 3261 t2 = tcg_temp_new_vec(type); 3262 vec_gen_3(INDEX_op_x86_punpckl_vec, type, MO_8, 3263 tcgv_vec_arg(t1), tcgv_vec_arg(v1), tcgv_vec_arg(v1)); 3264 vec_gen_3(INDEX_op_x86_punpckh_vec, type, MO_8, 3265 tcgv_vec_arg(t2), tcgv_vec_arg(v1), tcgv_vec_arg(v1)); 3266 tcg_gen_sari_vec(MO_16, t1, t1, imm + 8); 3267 tcg_gen_sari_vec(MO_16, t2, t2, imm + 8); 3268 vec_gen_3(INDEX_op_x86_packss_vec, type, MO_8, 3269 tcgv_vec_arg(v0), tcgv_vec_arg(t1), tcgv_vec_arg(t2)); 3270 tcg_temp_free_vec(t1); 3271 tcg_temp_free_vec(t2); 3272 break; 3273 3274 case MO_64: 3275 if (imm <= 32) { 3276 /* 3277 * We can emulate a small sign extend by performing an arithmetic 3278 * 32-bit shift and overwriting the high half of a 64-bit logical 3279 * shift. Note that the ISA says shift of 32 is valid, but TCG 3280 * does not, so we have to bound the smaller shift -- we get the 3281 * same result in the high half either way. 3282 */ 3283 t1 = tcg_temp_new_vec(type); 3284 tcg_gen_sari_vec(MO_32, t1, v1, MIN(imm, 31)); 3285 tcg_gen_shri_vec(MO_64, v0, v1, imm); 3286 vec_gen_4(INDEX_op_x86_blend_vec, type, MO_32, 3287 tcgv_vec_arg(v0), tcgv_vec_arg(v0), 3288 tcgv_vec_arg(t1), 0xaa); 3289 tcg_temp_free_vec(t1); 3290 } else { 3291 /* Otherwise we will need to use a compare vs 0 to produce 3292 * the sign-extend, shift and merge. 3293 */ 3294 t1 = tcg_const_zeros_vec(type); 3295 tcg_gen_cmp_vec(TCG_COND_GT, MO_64, t1, t1, v1); 3296 tcg_gen_shri_vec(MO_64, v0, v1, imm); 3297 tcg_gen_shli_vec(MO_64, t1, t1, 64 - imm); 3298 tcg_gen_or_vec(MO_64, v0, v0, t1); 3299 tcg_temp_free_vec(t1); 3300 } 3301 break; 3302 3303 default: 3304 g_assert_not_reached(); 3305 } 3306} 3307 3308static void expand_vec_rotli(TCGType type, unsigned vece, 3309 TCGv_vec v0, TCGv_vec v1, TCGArg imm) 3310{ 3311 TCGv_vec t; 3312 3313 if (vece == MO_8) { 3314 expand_vec_shi(type, vece, INDEX_op_rotli_vec, v0, v1, imm); 3315 return; 3316 } 3317 3318 t = tcg_temp_new_vec(type); 3319 tcg_gen_shli_vec(vece, t, v1, imm); 3320 tcg_gen_shri_vec(vece, v0, v1, (8 << vece) - imm); 3321 tcg_gen_or_vec(vece, v0, v0, t); 3322 tcg_temp_free_vec(t); 3323} 3324 3325static void expand_vec_rotls(TCGType type, unsigned vece, 3326 TCGv_vec v0, TCGv_vec v1, TCGv_i32 lsh) 3327{ 3328 TCGv_i32 rsh; 3329 TCGv_vec t; 3330 3331 tcg_debug_assert(vece != MO_8); 3332 3333 t = tcg_temp_new_vec(type); 3334 rsh = tcg_temp_new_i32(); 3335 3336 tcg_gen_neg_i32(rsh, lsh); 3337 tcg_gen_andi_i32(rsh, rsh, (8 << vece) - 1); 3338 tcg_gen_shls_vec(vece, t, v1, lsh); 3339 tcg_gen_shrs_vec(vece, v0, v1, rsh); 3340 tcg_gen_or_vec(vece, v0, v0, t); 3341 tcg_temp_free_vec(t); 3342 tcg_temp_free_i32(rsh); 3343} 3344 3345static void expand_vec_rotv(TCGType type, unsigned vece, TCGv_vec v0, 3346 TCGv_vec v1, TCGv_vec sh, bool right) 3347{ 3348 TCGv_vec t = tcg_temp_new_vec(type); 3349 3350 tcg_gen_dupi_vec(vece, t, 8 << vece); 3351 tcg_gen_sub_vec(vece, t, t, sh); 3352 if (right) { 3353 tcg_gen_shlv_vec(vece, t, v1, t); 3354 tcg_gen_shrv_vec(vece, v0, v1, sh); 3355 } else { 3356 tcg_gen_shrv_vec(vece, t, v1, t); 3357 tcg_gen_shlv_vec(vece, v0, v1, sh); 3358 } 3359 tcg_gen_or_vec(vece, v0, v0, t); 3360 tcg_temp_free_vec(t); 3361} 3362 3363static void expand_vec_mul(TCGType type, unsigned vece, 3364 TCGv_vec v0, TCGv_vec v1, TCGv_vec v2) 3365{ 3366 TCGv_vec t1, t2, t3, t4, zero; 3367 3368 tcg_debug_assert(vece == MO_8); 3369 3370 /* 3371 * Unpack v1 bytes to words, 0 | x. 3372 * Unpack v2 bytes to words, y | 0. 3373 * This leaves the 8-bit result, x * y, with 8 bits of right padding. 3374 * Shift logical right by 8 bits to clear the high 8 bytes before 3375 * using an unsigned saturated pack. 3376 * 3377 * The difference between the V64, V128 and V256 cases is merely how 3378 * we distribute the expansion between temporaries. 3379 */ 3380 switch (type) { 3381 case TCG_TYPE_V64: 3382 t1 = tcg_temp_new_vec(TCG_TYPE_V128); 3383 t2 = tcg_temp_new_vec(TCG_TYPE_V128); 3384 zero = tcg_constant_vec(TCG_TYPE_V128, MO_8, 0); 3385 vec_gen_3(INDEX_op_x86_punpckl_vec, TCG_TYPE_V128, MO_8, 3386 tcgv_vec_arg(t1), tcgv_vec_arg(v1), tcgv_vec_arg(zero)); 3387 vec_gen_3(INDEX_op_x86_punpckl_vec, TCG_TYPE_V128, MO_8, 3388 tcgv_vec_arg(t2), tcgv_vec_arg(zero), tcgv_vec_arg(v2)); 3389 tcg_gen_mul_vec(MO_16, t1, t1, t2); 3390 tcg_gen_shri_vec(MO_16, t1, t1, 8); 3391 vec_gen_3(INDEX_op_x86_packus_vec, TCG_TYPE_V128, MO_8, 3392 tcgv_vec_arg(v0), tcgv_vec_arg(t1), tcgv_vec_arg(t1)); 3393 tcg_temp_free_vec(t1); 3394 tcg_temp_free_vec(t2); 3395 break; 3396 3397 case TCG_TYPE_V128: 3398 case TCG_TYPE_V256: 3399 t1 = tcg_temp_new_vec(type); 3400 t2 = tcg_temp_new_vec(type); 3401 t3 = tcg_temp_new_vec(type); 3402 t4 = tcg_temp_new_vec(type); 3403 zero = tcg_constant_vec(TCG_TYPE_V128, MO_8, 0); 3404 vec_gen_3(INDEX_op_x86_punpckl_vec, type, MO_8, 3405 tcgv_vec_arg(t1), tcgv_vec_arg(v1), tcgv_vec_arg(zero)); 3406 vec_gen_3(INDEX_op_x86_punpckl_vec, type, MO_8, 3407 tcgv_vec_arg(t2), tcgv_vec_arg(zero), tcgv_vec_arg(v2)); 3408 vec_gen_3(INDEX_op_x86_punpckh_vec, type, MO_8, 3409 tcgv_vec_arg(t3), tcgv_vec_arg(v1), tcgv_vec_arg(zero)); 3410 vec_gen_3(INDEX_op_x86_punpckh_vec, type, MO_8, 3411 tcgv_vec_arg(t4), tcgv_vec_arg(zero), tcgv_vec_arg(v2)); 3412 tcg_gen_mul_vec(MO_16, t1, t1, t2); 3413 tcg_gen_mul_vec(MO_16, t3, t3, t4); 3414 tcg_gen_shri_vec(MO_16, t1, t1, 8); 3415 tcg_gen_shri_vec(MO_16, t3, t3, 8); 3416 vec_gen_3(INDEX_op_x86_packus_vec, type, MO_8, 3417 tcgv_vec_arg(v0), tcgv_vec_arg(t1), tcgv_vec_arg(t3)); 3418 tcg_temp_free_vec(t1); 3419 tcg_temp_free_vec(t2); 3420 tcg_temp_free_vec(t3); 3421 tcg_temp_free_vec(t4); 3422 break; 3423 3424 default: 3425 g_assert_not_reached(); 3426 } 3427} 3428 3429static bool expand_vec_cmp_noinv(TCGType type, unsigned vece, TCGv_vec v0, 3430 TCGv_vec v1, TCGv_vec v2, TCGCond cond) 3431{ 3432 enum { 3433 NEED_INV = 1, 3434 NEED_SWAP = 2, 3435 NEED_BIAS = 4, 3436 NEED_UMIN = 8, 3437 NEED_UMAX = 16, 3438 }; 3439 TCGv_vec t1, t2, t3; 3440 uint8_t fixup; 3441 3442 switch (cond) { 3443 case TCG_COND_EQ: 3444 case TCG_COND_GT: 3445 fixup = 0; 3446 break; 3447 case TCG_COND_NE: 3448 case TCG_COND_LE: 3449 fixup = NEED_INV; 3450 break; 3451 case TCG_COND_LT: 3452 fixup = NEED_SWAP; 3453 break; 3454 case TCG_COND_GE: 3455 fixup = NEED_SWAP | NEED_INV; 3456 break; 3457 case TCG_COND_LEU: 3458 if (vece <= MO_32) { 3459 fixup = NEED_UMIN; 3460 } else { 3461 fixup = NEED_BIAS | NEED_INV; 3462 } 3463 break; 3464 case TCG_COND_GTU: 3465 if (vece <= MO_32) { 3466 fixup = NEED_UMIN | NEED_INV; 3467 } else { 3468 fixup = NEED_BIAS; 3469 } 3470 break; 3471 case TCG_COND_GEU: 3472 if (vece <= MO_32) { 3473 fixup = NEED_UMAX; 3474 } else { 3475 fixup = NEED_BIAS | NEED_SWAP | NEED_INV; 3476 } 3477 break; 3478 case TCG_COND_LTU: 3479 if (vece <= MO_32) { 3480 fixup = NEED_UMAX | NEED_INV; 3481 } else { 3482 fixup = NEED_BIAS | NEED_SWAP; 3483 } 3484 break; 3485 default: 3486 g_assert_not_reached(); 3487 } 3488 3489 if (fixup & NEED_INV) { 3490 cond = tcg_invert_cond(cond); 3491 } 3492 if (fixup & NEED_SWAP) { 3493 t1 = v1, v1 = v2, v2 = t1; 3494 cond = tcg_swap_cond(cond); 3495 } 3496 3497 t1 = t2 = NULL; 3498 if (fixup & (NEED_UMIN | NEED_UMAX)) { 3499 t1 = tcg_temp_new_vec(type); 3500 if (fixup & NEED_UMIN) { 3501 tcg_gen_umin_vec(vece, t1, v1, v2); 3502 } else { 3503 tcg_gen_umax_vec(vece, t1, v1, v2); 3504 } 3505 v2 = t1; 3506 cond = TCG_COND_EQ; 3507 } else if (fixup & NEED_BIAS) { 3508 t1 = tcg_temp_new_vec(type); 3509 t2 = tcg_temp_new_vec(type); 3510 t3 = tcg_constant_vec(type, vece, 1ull << ((8 << vece) - 1)); 3511 tcg_gen_sub_vec(vece, t1, v1, t3); 3512 tcg_gen_sub_vec(vece, t2, v2, t3); 3513 v1 = t1; 3514 v2 = t2; 3515 cond = tcg_signed_cond(cond); 3516 } 3517 3518 tcg_debug_assert(cond == TCG_COND_EQ || cond == TCG_COND_GT); 3519 /* Expand directly; do not recurse. */ 3520 vec_gen_4(INDEX_op_cmp_vec, type, vece, 3521 tcgv_vec_arg(v0), tcgv_vec_arg(v1), tcgv_vec_arg(v2), cond); 3522 3523 if (t1) { 3524 tcg_temp_free_vec(t1); 3525 if (t2) { 3526 tcg_temp_free_vec(t2); 3527 } 3528 } 3529 return fixup & NEED_INV; 3530} 3531 3532static void expand_vec_cmp(TCGType type, unsigned vece, TCGv_vec v0, 3533 TCGv_vec v1, TCGv_vec v2, TCGCond cond) 3534{ 3535 if (expand_vec_cmp_noinv(type, vece, v0, v1, v2, cond)) { 3536 tcg_gen_not_vec(vece, v0, v0); 3537 } 3538} 3539 3540static void expand_vec_cmpsel(TCGType type, unsigned vece, TCGv_vec v0, 3541 TCGv_vec c1, TCGv_vec c2, 3542 TCGv_vec v3, TCGv_vec v4, TCGCond cond) 3543{ 3544 TCGv_vec t = tcg_temp_new_vec(type); 3545 3546 if (expand_vec_cmp_noinv(type, vece, t, c1, c2, cond)) { 3547 /* Invert the sense of the compare by swapping arguments. */ 3548 TCGv_vec x; 3549 x = v3, v3 = v4, v4 = x; 3550 } 3551 vec_gen_4(INDEX_op_x86_vpblendvb_vec, type, vece, 3552 tcgv_vec_arg(v0), tcgv_vec_arg(v4), 3553 tcgv_vec_arg(v3), tcgv_vec_arg(t)); 3554 tcg_temp_free_vec(t); 3555} 3556 3557void tcg_expand_vec_op(TCGOpcode opc, TCGType type, unsigned vece, 3558 TCGArg a0, ...) 3559{ 3560 va_list va; 3561 TCGArg a2; 3562 TCGv_vec v0, v1, v2, v3, v4; 3563 3564 va_start(va, a0); 3565 v0 = temp_tcgv_vec(arg_temp(a0)); 3566 v1 = temp_tcgv_vec(arg_temp(va_arg(va, TCGArg))); 3567 a2 = va_arg(va, TCGArg); 3568 3569 switch (opc) { 3570 case INDEX_op_shli_vec: 3571 case INDEX_op_shri_vec: 3572 expand_vec_shi(type, vece, opc, v0, v1, a2); 3573 break; 3574 3575 case INDEX_op_sari_vec: 3576 expand_vec_sari(type, vece, v0, v1, a2); 3577 break; 3578 3579 case INDEX_op_rotli_vec: 3580 expand_vec_rotli(type, vece, v0, v1, a2); 3581 break; 3582 3583 case INDEX_op_rotls_vec: 3584 expand_vec_rotls(type, vece, v0, v1, temp_tcgv_i32(arg_temp(a2))); 3585 break; 3586 3587 case INDEX_op_rotlv_vec: 3588 v2 = temp_tcgv_vec(arg_temp(a2)); 3589 expand_vec_rotv(type, vece, v0, v1, v2, false); 3590 break; 3591 case INDEX_op_rotrv_vec: 3592 v2 = temp_tcgv_vec(arg_temp(a2)); 3593 expand_vec_rotv(type, vece, v0, v1, v2, true); 3594 break; 3595 3596 case INDEX_op_mul_vec: 3597 v2 = temp_tcgv_vec(arg_temp(a2)); 3598 expand_vec_mul(type, vece, v0, v1, v2); 3599 break; 3600 3601 case INDEX_op_cmp_vec: 3602 v2 = temp_tcgv_vec(arg_temp(a2)); 3603 expand_vec_cmp(type, vece, v0, v1, v2, va_arg(va, TCGArg)); 3604 break; 3605 3606 case INDEX_op_cmpsel_vec: 3607 v2 = temp_tcgv_vec(arg_temp(a2)); 3608 v3 = temp_tcgv_vec(arg_temp(va_arg(va, TCGArg))); 3609 v4 = temp_tcgv_vec(arg_temp(va_arg(va, TCGArg))); 3610 expand_vec_cmpsel(type, vece, v0, v1, v2, v3, v4, va_arg(va, TCGArg)); 3611 break; 3612 3613 default: 3614 break; 3615 } 3616 3617 va_end(va); 3618} 3619 3620static const int tcg_target_callee_save_regs[] = { 3621#if TCG_TARGET_REG_BITS == 64 3622 TCG_REG_RBP, 3623 TCG_REG_RBX, 3624#if defined(_WIN64) 3625 TCG_REG_RDI, 3626 TCG_REG_RSI, 3627#endif 3628 TCG_REG_R12, 3629 TCG_REG_R13, 3630 TCG_REG_R14, /* Currently used for the global env. */ 3631 TCG_REG_R15, 3632#else 3633 TCG_REG_EBP, /* Currently used for the global env. */ 3634 TCG_REG_EBX, 3635 TCG_REG_ESI, 3636 TCG_REG_EDI, 3637#endif 3638}; 3639 3640/* Compute frame size via macros, to share between tcg_target_qemu_prologue 3641 and tcg_register_jit. */ 3642 3643#define PUSH_SIZE \ 3644 ((1 + ARRAY_SIZE(tcg_target_callee_save_regs)) \ 3645 * (TCG_TARGET_REG_BITS / 8)) 3646 3647#define FRAME_SIZE \ 3648 ((PUSH_SIZE \ 3649 + TCG_STATIC_CALL_ARGS_SIZE \ 3650 + CPU_TEMP_BUF_NLONGS * sizeof(long) \ 3651 + TCG_TARGET_STACK_ALIGN - 1) \ 3652 & ~(TCG_TARGET_STACK_ALIGN - 1)) 3653 3654/* Generate global QEMU prologue and epilogue code */ 3655static void tcg_target_qemu_prologue(TCGContext *s) 3656{ 3657 int i, stack_addend; 3658 3659 /* TB prologue */ 3660 3661 /* Reserve some stack space, also for TCG temps. */ 3662 stack_addend = FRAME_SIZE - PUSH_SIZE; 3663 tcg_set_frame(s, TCG_REG_CALL_STACK, TCG_STATIC_CALL_ARGS_SIZE, 3664 CPU_TEMP_BUF_NLONGS * sizeof(long)); 3665 3666 /* Save all callee saved registers. */ 3667 for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); i++) { 3668 tcg_out_push(s, tcg_target_callee_save_regs[i]); 3669 } 3670 3671#if TCG_TARGET_REG_BITS == 32 3672 tcg_out_ld(s, TCG_TYPE_PTR, TCG_AREG0, TCG_REG_ESP, 3673 (ARRAY_SIZE(tcg_target_callee_save_regs) + 1) * 4); 3674 tcg_out_addi(s, TCG_REG_ESP, -stack_addend); 3675 /* jmp *tb. */ 3676 tcg_out_modrm_offset(s, OPC_GRP5, EXT5_JMPN_Ev, TCG_REG_ESP, 3677 (ARRAY_SIZE(tcg_target_callee_save_regs) + 2) * 4 3678 + stack_addend); 3679#else 3680# if !defined(CONFIG_SOFTMMU) && TCG_TARGET_REG_BITS == 64 3681 if (guest_base) { 3682 int seg = setup_guest_base_seg(); 3683 if (seg != 0) { 3684 x86_guest_base_seg = seg; 3685 } else if (guest_base == (int32_t)guest_base) { 3686 x86_guest_base_offset = guest_base; 3687 } else { 3688 /* Choose R12 because, as a base, it requires a SIB byte. */ 3689 x86_guest_base_index = TCG_REG_R12; 3690 tcg_out_movi(s, TCG_TYPE_PTR, x86_guest_base_index, guest_base); 3691 tcg_regset_set_reg(s->reserved_regs, x86_guest_base_index); 3692 } 3693 } 3694# endif 3695 tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]); 3696 tcg_out_addi(s, TCG_REG_ESP, -stack_addend); 3697 /* jmp *tb. */ 3698 tcg_out_modrm(s, OPC_GRP5, EXT5_JMPN_Ev, tcg_target_call_iarg_regs[1]); 3699#endif 3700 3701 /* 3702 * Return path for goto_ptr. Set return value to 0, a-la exit_tb, 3703 * and fall through to the rest of the epilogue. 3704 */ 3705 tcg_code_gen_epilogue = tcg_splitwx_to_rx(s->code_ptr); 3706 tcg_out_movi(s, TCG_TYPE_REG, TCG_REG_EAX, 0); 3707 3708 /* TB epilogue */ 3709 tb_ret_addr = tcg_splitwx_to_rx(s->code_ptr); 3710 3711 tcg_out_addi(s, TCG_REG_CALL_STACK, stack_addend); 3712 3713 if (have_avx2) { 3714 tcg_out_vex_opc(s, OPC_VZEROUPPER, 0, 0, 0, 0); 3715 } 3716 for (i = ARRAY_SIZE(tcg_target_callee_save_regs) - 1; i >= 0; i--) { 3717 tcg_out_pop(s, tcg_target_callee_save_regs[i]); 3718 } 3719 tcg_out_opc(s, OPC_RET, 0, 0, 0); 3720} 3721 3722static void tcg_out_nop_fill(tcg_insn_unit *p, int count) 3723{ 3724 memset(p, 0x90, count); 3725} 3726 3727static void tcg_target_init(TCGContext *s) 3728{ 3729#ifdef CONFIG_CPUID_H 3730 unsigned a, b, c, d, b7 = 0; 3731 int max = __get_cpuid_max(0, 0); 3732 3733 if (max >= 7) { 3734 /* BMI1 is available on AMD Piledriver and Intel Haswell CPUs. */ 3735 __cpuid_count(7, 0, a, b7, c, d); 3736 have_bmi1 = (b7 & bit_BMI) != 0; 3737 have_bmi2 = (b7 & bit_BMI2) != 0; 3738 } 3739 3740 if (max >= 1) { 3741 __cpuid(1, a, b, c, d); 3742#ifndef have_cmov 3743 /* For 32-bit, 99% certainty that we're running on hardware that 3744 supports cmov, but we still need to check. In case cmov is not 3745 available, we'll use a small forward branch. */ 3746 have_cmov = (d & bit_CMOV) != 0; 3747#endif 3748 3749 /* MOVBE is only available on Intel Atom and Haswell CPUs, so we 3750 need to probe for it. */ 3751 have_movbe = (c & bit_MOVBE) != 0; 3752 have_popcnt = (c & bit_POPCNT) != 0; 3753 3754 /* There are a number of things we must check before we can be 3755 sure of not hitting invalid opcode. */ 3756 if (c & bit_OSXSAVE) { 3757 unsigned xcrl, xcrh; 3758 /* The xgetbv instruction is not available to older versions of 3759 * the assembler, so we encode the instruction manually. 3760 */ 3761 asm(".byte 0x0f, 0x01, 0xd0" : "=a" (xcrl), "=d" (xcrh) : "c" (0)); 3762 if ((xcrl & 6) == 6) { 3763 have_avx1 = (c & bit_AVX) != 0; 3764 have_avx2 = (b7 & bit_AVX2) != 0; 3765 } 3766 } 3767 } 3768 3769 max = __get_cpuid_max(0x8000000, 0); 3770 if (max >= 1) { 3771 __cpuid(0x80000001, a, b, c, d); 3772 /* LZCNT was introduced with AMD Barcelona and Intel Haswell CPUs. */ 3773 have_lzcnt = (c & bit_LZCNT) != 0; 3774 } 3775#endif /* CONFIG_CPUID_H */ 3776 3777 tcg_target_available_regs[TCG_TYPE_I32] = ALL_GENERAL_REGS; 3778 if (TCG_TARGET_REG_BITS == 64) { 3779 tcg_target_available_regs[TCG_TYPE_I64] = ALL_GENERAL_REGS; 3780 } 3781 if (have_avx1) { 3782 tcg_target_available_regs[TCG_TYPE_V64] = ALL_VECTOR_REGS; 3783 tcg_target_available_regs[TCG_TYPE_V128] = ALL_VECTOR_REGS; 3784 } 3785 if (have_avx2) { 3786 tcg_target_available_regs[TCG_TYPE_V256] = ALL_VECTOR_REGS; 3787 } 3788 3789 tcg_target_call_clobber_regs = ALL_VECTOR_REGS; 3790 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_EAX); 3791 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_EDX); 3792 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_ECX); 3793 if (TCG_TARGET_REG_BITS == 64) { 3794#if !defined(_WIN64) 3795 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_RDI); 3796 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_RSI); 3797#endif 3798 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R8); 3799 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R9); 3800 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R10); 3801 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R11); 3802 } 3803 3804 s->reserved_regs = 0; 3805 tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK); 3806} 3807 3808typedef struct { 3809 DebugFrameHeader h; 3810 uint8_t fde_def_cfa[4]; 3811 uint8_t fde_reg_ofs[14]; 3812} DebugFrame; 3813 3814/* We're expecting a 2 byte uleb128 encoded value. */ 3815QEMU_BUILD_BUG_ON(FRAME_SIZE >= (1 << 14)); 3816 3817#if !defined(__ELF__) 3818 /* Host machine without ELF. */ 3819#elif TCG_TARGET_REG_BITS == 64 3820#define ELF_HOST_MACHINE EM_X86_64 3821static const DebugFrame debug_frame = { 3822 .h.cie.len = sizeof(DebugFrameCIE)-4, /* length after .len member */ 3823 .h.cie.id = -1, 3824 .h.cie.version = 1, 3825 .h.cie.code_align = 1, 3826 .h.cie.data_align = 0x78, /* sleb128 -8 */ 3827 .h.cie.return_column = 16, 3828 3829 /* Total FDE size does not include the "len" member. */ 3830 .h.fde.len = sizeof(DebugFrame) - offsetof(DebugFrame, h.fde.cie_offset), 3831 3832 .fde_def_cfa = { 3833 12, 7, /* DW_CFA_def_cfa %rsp, ... */ 3834 (FRAME_SIZE & 0x7f) | 0x80, /* ... uleb128 FRAME_SIZE */ 3835 (FRAME_SIZE >> 7) 3836 }, 3837 .fde_reg_ofs = { 3838 0x90, 1, /* DW_CFA_offset, %rip, -8 */ 3839 /* The following ordering must match tcg_target_callee_save_regs. */ 3840 0x86, 2, /* DW_CFA_offset, %rbp, -16 */ 3841 0x83, 3, /* DW_CFA_offset, %rbx, -24 */ 3842 0x8c, 4, /* DW_CFA_offset, %r12, -32 */ 3843 0x8d, 5, /* DW_CFA_offset, %r13, -40 */ 3844 0x8e, 6, /* DW_CFA_offset, %r14, -48 */ 3845 0x8f, 7, /* DW_CFA_offset, %r15, -56 */ 3846 } 3847}; 3848#else 3849#define ELF_HOST_MACHINE EM_386 3850static const DebugFrame debug_frame = { 3851 .h.cie.len = sizeof(DebugFrameCIE)-4, /* length after .len member */ 3852 .h.cie.id = -1, 3853 .h.cie.version = 1, 3854 .h.cie.code_align = 1, 3855 .h.cie.data_align = 0x7c, /* sleb128 -4 */ 3856 .h.cie.return_column = 8, 3857 3858 /* Total FDE size does not include the "len" member. */ 3859 .h.fde.len = sizeof(DebugFrame) - offsetof(DebugFrame, h.fde.cie_offset), 3860 3861 .fde_def_cfa = { 3862 12, 4, /* DW_CFA_def_cfa %esp, ... */ 3863 (FRAME_SIZE & 0x7f) | 0x80, /* ... uleb128 FRAME_SIZE */ 3864 (FRAME_SIZE >> 7) 3865 }, 3866 .fde_reg_ofs = { 3867 0x88, 1, /* DW_CFA_offset, %eip, -4 */ 3868 /* The following ordering must match tcg_target_callee_save_regs. */ 3869 0x85, 2, /* DW_CFA_offset, %ebp, -8 */ 3870 0x83, 3, /* DW_CFA_offset, %ebx, -12 */ 3871 0x86, 4, /* DW_CFA_offset, %esi, -16 */ 3872 0x87, 5, /* DW_CFA_offset, %edi, -20 */ 3873 } 3874}; 3875#endif 3876 3877#if defined(ELF_HOST_MACHINE) 3878void tcg_register_jit(const void *buf, size_t buf_size) 3879{ 3880 tcg_register_jit_int(buf, buf_size, &debug_frame, sizeof(debug_frame)); 3881} 3882#endif 3883