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 "elf.h" 26 27/* 28 * Standardize on the _CALL_FOO symbols used by GCC: 29 * Apple XCode does not define _CALL_DARWIN. 30 * Clang defines _CALL_ELF (64-bit) but not _CALL_SYSV or _CALL_AIX. 31 */ 32#if TCG_TARGET_REG_BITS == 64 33# ifdef _CALL_AIX 34 /* ok */ 35# elif defined(_CALL_ELF) && _CALL_ELF == 1 36# define _CALL_AIX 37# elif defined(_CALL_ELF) && _CALL_ELF == 2 38 /* ok */ 39# else 40# error "Unknown ABI" 41# endif 42#else 43# if defined(_CALL_SYSV) || defined(_CALL_DARWIN) 44 /* ok */ 45# elif defined(__APPLE__) 46# define _CALL_DARWIN 47# elif defined(__ELF__) 48# define _CALL_SYSV 49# else 50# error "Unknown ABI" 51# endif 52#endif 53 54#if TCG_TARGET_REG_BITS == 64 55# define TCG_TARGET_CALL_ARG_I32 TCG_CALL_ARG_EXTEND 56# define TCG_TARGET_CALL_RET_I128 TCG_CALL_RET_NORMAL 57#else 58# define TCG_TARGET_CALL_ARG_I32 TCG_CALL_ARG_NORMAL 59# define TCG_TARGET_CALL_RET_I128 TCG_CALL_RET_BY_REF 60#endif 61#ifdef _CALL_SYSV 62# define TCG_TARGET_CALL_ARG_I64 TCG_CALL_ARG_EVEN 63# define TCG_TARGET_CALL_ARG_I128 TCG_CALL_ARG_BY_REF 64#else 65# define TCG_TARGET_CALL_ARG_I64 TCG_CALL_ARG_NORMAL 66# define TCG_TARGET_CALL_ARG_I128 TCG_CALL_ARG_NORMAL 67#endif 68 69/* For some memory operations, we need a scratch that isn't R0. For the AIX 70 calling convention, we can re-use the TOC register since we'll be reloading 71 it at every call. Otherwise R12 will do nicely as neither a call-saved 72 register nor a parameter register. */ 73#ifdef _CALL_AIX 74# define TCG_REG_TMP1 TCG_REG_R2 75#else 76# define TCG_REG_TMP1 TCG_REG_R12 77#endif 78#define TCG_REG_TMP2 TCG_REG_R11 79 80#define TCG_VEC_TMP1 TCG_REG_V0 81#define TCG_VEC_TMP2 TCG_REG_V1 82 83#define TCG_REG_TB TCG_REG_R31 84#define USE_REG_TB (TCG_TARGET_REG_BITS == 64 && !have_isa_3_00) 85 86/* Shorthand for size of a pointer. Avoid promotion to unsigned. */ 87#define SZP ((int)sizeof(void *)) 88 89/* Shorthand for size of a register. */ 90#define SZR (TCG_TARGET_REG_BITS / 8) 91 92#define TCG_CT_CONST_S16 0x100 93#define TCG_CT_CONST_U16 0x200 94#define TCG_CT_CONST_S32 0x400 95#define TCG_CT_CONST_U32 0x800 96#define TCG_CT_CONST_ZERO 0x1000 97#define TCG_CT_CONST_MONE 0x2000 98#define TCG_CT_CONST_WSZ 0x4000 99#define TCG_CT_CONST_CMP 0x8000 100 101#define ALL_GENERAL_REGS 0xffffffffu 102#define ALL_VECTOR_REGS 0xffffffff00000000ull 103 104#ifndef R_PPC64_PCREL34 105#define R_PPC64_PCREL34 132 106#endif 107 108#define have_isel (cpuinfo & CPUINFO_ISEL) 109 110#define TCG_GUEST_BASE_REG TCG_REG_R30 111 112#ifdef CONFIG_DEBUG_TCG 113static const char tcg_target_reg_names[TCG_TARGET_NB_REGS][4] = { 114 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", 115 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", 116 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", 117 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", 118 "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", 119 "v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15", 120 "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", 121 "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31", 122}; 123#endif 124 125static const int tcg_target_reg_alloc_order[] = { 126 TCG_REG_R14, /* call saved registers */ 127 TCG_REG_R15, 128 TCG_REG_R16, 129 TCG_REG_R17, 130 TCG_REG_R18, 131 TCG_REG_R19, 132 TCG_REG_R20, 133 TCG_REG_R21, 134 TCG_REG_R22, 135 TCG_REG_R23, 136 TCG_REG_R24, 137 TCG_REG_R25, 138 TCG_REG_R26, 139 TCG_REG_R27, 140 TCG_REG_R28, 141 TCG_REG_R29, 142 TCG_REG_R30, 143 TCG_REG_R31, 144 TCG_REG_R12, /* call clobbered, non-arguments */ 145 TCG_REG_R11, 146 TCG_REG_R2, 147 TCG_REG_R13, 148 TCG_REG_R10, /* call clobbered, arguments */ 149 TCG_REG_R9, 150 TCG_REG_R8, 151 TCG_REG_R7, 152 TCG_REG_R6, 153 TCG_REG_R5, 154 TCG_REG_R4, 155 TCG_REG_R3, 156 157 /* V0 and V1 reserved as temporaries; V20 - V31 are call-saved */ 158 TCG_REG_V2, /* call clobbered, vectors */ 159 TCG_REG_V3, 160 TCG_REG_V4, 161 TCG_REG_V5, 162 TCG_REG_V6, 163 TCG_REG_V7, 164 TCG_REG_V8, 165 TCG_REG_V9, 166 TCG_REG_V10, 167 TCG_REG_V11, 168 TCG_REG_V12, 169 TCG_REG_V13, 170 TCG_REG_V14, 171 TCG_REG_V15, 172 TCG_REG_V16, 173 TCG_REG_V17, 174 TCG_REG_V18, 175 TCG_REG_V19, 176}; 177 178static const int tcg_target_call_iarg_regs[] = { 179 TCG_REG_R3, 180 TCG_REG_R4, 181 TCG_REG_R5, 182 TCG_REG_R6, 183 TCG_REG_R7, 184 TCG_REG_R8, 185 TCG_REG_R9, 186 TCG_REG_R10 187}; 188 189static TCGReg tcg_target_call_oarg_reg(TCGCallReturnKind kind, int slot) 190{ 191 tcg_debug_assert(kind == TCG_CALL_RET_NORMAL); 192 tcg_debug_assert(slot >= 0 && slot <= 1); 193 return TCG_REG_R3 + slot; 194} 195 196static const int tcg_target_callee_save_regs[] = { 197#ifdef _CALL_DARWIN 198 TCG_REG_R11, 199#endif 200 TCG_REG_R14, 201 TCG_REG_R15, 202 TCG_REG_R16, 203 TCG_REG_R17, 204 TCG_REG_R18, 205 TCG_REG_R19, 206 TCG_REG_R20, 207 TCG_REG_R21, 208 TCG_REG_R22, 209 TCG_REG_R23, 210 TCG_REG_R24, 211 TCG_REG_R25, 212 TCG_REG_R26, 213 TCG_REG_R27, /* currently used for the global env */ 214 TCG_REG_R28, 215 TCG_REG_R29, 216 TCG_REG_R30, 217 TCG_REG_R31 218}; 219 220/* For PPC, we use TB+4 instead of TB as the base. */ 221static inline ptrdiff_t ppc_tbrel_diff(TCGContext *s, const void *target) 222{ 223 return tcg_tbrel_diff(s, target) - 4; 224} 225 226static inline bool in_range_b(tcg_target_long target) 227{ 228 return target == sextract64(target, 0, 26); 229} 230 231static uint32_t reloc_pc24_val(const tcg_insn_unit *pc, 232 const tcg_insn_unit *target) 233{ 234 ptrdiff_t disp = tcg_ptr_byte_diff(target, pc); 235 tcg_debug_assert(in_range_b(disp)); 236 return disp & 0x3fffffc; 237} 238 239static bool reloc_pc24(tcg_insn_unit *src_rw, const tcg_insn_unit *target) 240{ 241 const tcg_insn_unit *src_rx = tcg_splitwx_to_rx(src_rw); 242 ptrdiff_t disp = tcg_ptr_byte_diff(target, src_rx); 243 244 if (in_range_b(disp)) { 245 *src_rw = (*src_rw & ~0x3fffffc) | (disp & 0x3fffffc); 246 return true; 247 } 248 return false; 249} 250 251static uint16_t reloc_pc14_val(const tcg_insn_unit *pc, 252 const tcg_insn_unit *target) 253{ 254 ptrdiff_t disp = tcg_ptr_byte_diff(target, pc); 255 tcg_debug_assert(disp == (int16_t) disp); 256 return disp & 0xfffc; 257} 258 259static bool reloc_pc14(tcg_insn_unit *src_rw, const tcg_insn_unit *target) 260{ 261 const tcg_insn_unit *src_rx = tcg_splitwx_to_rx(src_rw); 262 ptrdiff_t disp = tcg_ptr_byte_diff(target, src_rx); 263 264 if (disp == (int16_t) disp) { 265 *src_rw = (*src_rw & ~0xfffc) | (disp & 0xfffc); 266 return true; 267 } 268 return false; 269} 270 271static bool reloc_pc34(tcg_insn_unit *src_rw, const tcg_insn_unit *target) 272{ 273 const tcg_insn_unit *src_rx = tcg_splitwx_to_rx(src_rw); 274 ptrdiff_t disp = tcg_ptr_byte_diff(target, src_rx); 275 276 if (disp == sextract64(disp, 0, 34)) { 277 src_rw[0] = (src_rw[0] & ~0x3ffff) | ((disp >> 16) & 0x3ffff); 278 src_rw[1] = (src_rw[1] & ~0xffff) | (disp & 0xffff); 279 return true; 280 } 281 return false; 282} 283 284static bool mask_operand(uint32_t c, int *mb, int *me); 285static bool mask64_operand(uint64_t c, int *mb, int *me); 286 287/* test if a constant matches the constraint */ 288static bool tcg_target_const_match(int64_t sval, int ct, 289 TCGType type, TCGCond cond, int vece) 290{ 291 uint64_t uval = sval; 292 int mb, me; 293 294 if (ct & TCG_CT_CONST) { 295 return 1; 296 } 297 298 if (type == TCG_TYPE_I32) { 299 uval = (uint32_t)sval; 300 sval = (int32_t)sval; 301 } 302 303 if (ct & TCG_CT_CONST_CMP) { 304 switch (cond) { 305 case TCG_COND_EQ: 306 case TCG_COND_NE: 307 ct |= TCG_CT_CONST_S16 | TCG_CT_CONST_U16; 308 break; 309 case TCG_COND_LT: 310 case TCG_COND_GE: 311 case TCG_COND_LE: 312 case TCG_COND_GT: 313 ct |= TCG_CT_CONST_S16; 314 break; 315 case TCG_COND_LTU: 316 case TCG_COND_GEU: 317 case TCG_COND_LEU: 318 case TCG_COND_GTU: 319 ct |= TCG_CT_CONST_U16; 320 break; 321 case TCG_COND_TSTEQ: 322 case TCG_COND_TSTNE: 323 if ((uval & ~0xffff) == 0 || (uval & ~0xffff0000ull) == 0) { 324 return 1; 325 } 326 if (uval == (uint32_t)uval && mask_operand(uval, &mb, &me)) { 327 return 1; 328 } 329 if (TCG_TARGET_REG_BITS == 64 && 330 mask64_operand(uval << clz64(uval), &mb, &me)) { 331 return 1; 332 } 333 return 0; 334 default: 335 g_assert_not_reached(); 336 } 337 } 338 339 if ((ct & TCG_CT_CONST_S16) && sval == (int16_t)sval) { 340 return 1; 341 } 342 if ((ct & TCG_CT_CONST_U16) && uval == (uint16_t)uval) { 343 return 1; 344 } 345 if ((ct & TCG_CT_CONST_S32) && sval == (int32_t)sval) { 346 return 1; 347 } 348 if ((ct & TCG_CT_CONST_U32) && uval == (uint32_t)uval) { 349 return 1; 350 } 351 if ((ct & TCG_CT_CONST_ZERO) && sval == 0) { 352 return 1; 353 } 354 if ((ct & TCG_CT_CONST_MONE) && sval == -1) { 355 return 1; 356 } 357 if ((ct & TCG_CT_CONST_WSZ) && sval == (type == TCG_TYPE_I32 ? 32 : 64)) { 358 return 1; 359 } 360 return 0; 361} 362 363#define OPCD(opc) ((opc)<<26) 364#define XO19(opc) (OPCD(19)|((opc)<<1)) 365#define MD30(opc) (OPCD(30)|((opc)<<2)) 366#define MDS30(opc) (OPCD(30)|((opc)<<1)) 367#define XO31(opc) (OPCD(31)|((opc)<<1)) 368#define XO58(opc) (OPCD(58)|(opc)) 369#define XO62(opc) (OPCD(62)|(opc)) 370#define VX4(opc) (OPCD(4)|(opc)) 371 372#define B OPCD( 18) 373#define BC OPCD( 16) 374 375#define LBZ OPCD( 34) 376#define LHZ OPCD( 40) 377#define LHA OPCD( 42) 378#define LWZ OPCD( 32) 379#define LWZUX XO31( 55) 380#define LD XO58( 0) 381#define LDX XO31( 21) 382#define LDU XO58( 1) 383#define LDUX XO31( 53) 384#define LWA XO58( 2) 385#define LWAX XO31(341) 386#define LQ OPCD( 56) 387 388#define STB OPCD( 38) 389#define STH OPCD( 44) 390#define STW OPCD( 36) 391#define STD XO62( 0) 392#define STDU XO62( 1) 393#define STDX XO31(149) 394#define STQ XO62( 2) 395 396#define PLWA OPCD( 41) 397#define PLD OPCD( 57) 398#define PLXSD OPCD( 42) 399#define PLXV OPCD(25 * 2 + 1) /* force tx=1 */ 400 401#define PSTD OPCD( 61) 402#define PSTXSD OPCD( 46) 403#define PSTXV OPCD(27 * 2 + 1) /* force sx=1 */ 404 405#define ADDIC OPCD( 12) 406#define ADDI OPCD( 14) 407#define ADDIS OPCD( 15) 408#define ORI OPCD( 24) 409#define ORIS OPCD( 25) 410#define XORI OPCD( 26) 411#define XORIS OPCD( 27) 412#define ANDI OPCD( 28) 413#define ANDIS OPCD( 29) 414#define MULLI OPCD( 7) 415#define CMPLI OPCD( 10) 416#define CMPI OPCD( 11) 417#define SUBFIC OPCD( 8) 418 419#define LWZU OPCD( 33) 420#define STWU OPCD( 37) 421 422#define RLWIMI OPCD( 20) 423#define RLWINM OPCD( 21) 424#define RLWNM OPCD( 23) 425 426#define RLDICL MD30( 0) 427#define RLDICR MD30( 1) 428#define RLDIMI MD30( 3) 429#define RLDCL MDS30( 8) 430 431#define BCLR XO19( 16) 432#define BCCTR XO19(528) 433#define CRAND XO19(257) 434#define CRANDC XO19(129) 435#define CRNAND XO19(225) 436#define CROR XO19(449) 437#define CRNOR XO19( 33) 438#define ADDPCIS XO19( 2) 439 440#define EXTSB XO31(954) 441#define EXTSH XO31(922) 442#define EXTSW XO31(986) 443#define ADD XO31(266) 444#define ADDE XO31(138) 445#define ADDME XO31(234) 446#define ADDZE XO31(202) 447#define ADDC XO31( 10) 448#define AND XO31( 28) 449#define SUBF XO31( 40) 450#define SUBFC XO31( 8) 451#define SUBFE XO31(136) 452#define SUBFME XO31(232) 453#define SUBFZE XO31(200) 454#define OR XO31(444) 455#define XOR XO31(316) 456#define MULLW XO31(235) 457#define MULHW XO31( 75) 458#define MULHWU XO31( 11) 459#define DIVW XO31(491) 460#define DIVWU XO31(459) 461#define MODSW XO31(779) 462#define MODUW XO31(267) 463#define CMP XO31( 0) 464#define CMPL XO31( 32) 465#define LHBRX XO31(790) 466#define LWBRX XO31(534) 467#define LDBRX XO31(532) 468#define STHBRX XO31(918) 469#define STWBRX XO31(662) 470#define STDBRX XO31(660) 471#define MFSPR XO31(339) 472#define MTSPR XO31(467) 473#define SRAWI XO31(824) 474#define NEG XO31(104) 475#define MFCR XO31( 19) 476#define MFOCRF (MFCR | (1u << 20)) 477#define NOR XO31(124) 478#define CNTLZW XO31( 26) 479#define CNTLZD XO31( 58) 480#define CNTTZW XO31(538) 481#define CNTTZD XO31(570) 482#define CNTPOPW XO31(378) 483#define CNTPOPD XO31(506) 484#define ANDC XO31( 60) 485#define ORC XO31(412) 486#define EQV XO31(284) 487#define NAND XO31(476) 488#define ISEL XO31( 15) 489 490#define MULLD XO31(233) 491#define MULHD XO31( 73) 492#define MULHDU XO31( 9) 493#define DIVD XO31(489) 494#define DIVDU XO31(457) 495#define MODSD XO31(777) 496#define MODUD XO31(265) 497 498#define LBZX XO31( 87) 499#define LHZX XO31(279) 500#define LHAX XO31(343) 501#define LWZX XO31( 23) 502#define STBX XO31(215) 503#define STHX XO31(407) 504#define STWX XO31(151) 505 506#define EIEIO XO31(854) 507#define HWSYNC XO31(598) 508#define LWSYNC (HWSYNC | (1u << 21)) 509 510#define SPR(a, b) ((((a)<<5)|(b))<<11) 511#define LR SPR(8, 0) 512#define CTR SPR(9, 0) 513 514#define SLW XO31( 24) 515#define SRW XO31(536) 516#define SRAW XO31(792) 517 518#define SLD XO31( 27) 519#define SRD XO31(539) 520#define SRAD XO31(794) 521#define SRADI XO31(413<<1) 522 523#define BRH XO31(219) 524#define BRW XO31(155) 525#define BRD XO31(187) 526 527#define TW XO31( 4) 528#define TRAP (TW | TO(31)) 529 530#define SETBC XO31(384) /* v3.10 */ 531#define SETBCR XO31(416) /* v3.10 */ 532#define SETNBC XO31(448) /* v3.10 */ 533#define SETNBCR XO31(480) /* v3.10 */ 534 535#define NOP ORI /* ori 0,0,0 */ 536 537#define LVX XO31(103) 538#define LVEBX XO31(7) 539#define LVEHX XO31(39) 540#define LVEWX XO31(71) 541#define LXSDX (XO31(588) | 1) /* v2.06, force tx=1 */ 542#define LXVDSX (XO31(332) | 1) /* v2.06, force tx=1 */ 543#define LXSIWZX (XO31(12) | 1) /* v2.07, force tx=1 */ 544#define LXV (OPCD(61) | 8 | 1) /* v3.00, force tx=1 */ 545#define LXSD (OPCD(57) | 2) /* v3.00 */ 546#define LXVWSX (XO31(364) | 1) /* v3.00, force tx=1 */ 547 548#define STVX XO31(231) 549#define STVEWX XO31(199) 550#define STXSDX (XO31(716) | 1) /* v2.06, force sx=1 */ 551#define STXSIWX (XO31(140) | 1) /* v2.07, force sx=1 */ 552#define STXV (OPCD(61) | 8 | 5) /* v3.00, force sx=1 */ 553#define STXSD (OPCD(61) | 2) /* v3.00 */ 554 555#define VADDSBS VX4(768) 556#define VADDUBS VX4(512) 557#define VADDUBM VX4(0) 558#define VADDSHS VX4(832) 559#define VADDUHS VX4(576) 560#define VADDUHM VX4(64) 561#define VADDSWS VX4(896) 562#define VADDUWS VX4(640) 563#define VADDUWM VX4(128) 564#define VADDUDM VX4(192) /* v2.07 */ 565 566#define VSUBSBS VX4(1792) 567#define VSUBUBS VX4(1536) 568#define VSUBUBM VX4(1024) 569#define VSUBSHS VX4(1856) 570#define VSUBUHS VX4(1600) 571#define VSUBUHM VX4(1088) 572#define VSUBSWS VX4(1920) 573#define VSUBUWS VX4(1664) 574#define VSUBUWM VX4(1152) 575#define VSUBUDM VX4(1216) /* v2.07 */ 576 577#define VNEGW (VX4(1538) | (6 << 16)) /* v3.00 */ 578#define VNEGD (VX4(1538) | (7 << 16)) /* v3.00 */ 579 580#define VMAXSB VX4(258) 581#define VMAXSH VX4(322) 582#define VMAXSW VX4(386) 583#define VMAXSD VX4(450) /* v2.07 */ 584#define VMAXUB VX4(2) 585#define VMAXUH VX4(66) 586#define VMAXUW VX4(130) 587#define VMAXUD VX4(194) /* v2.07 */ 588#define VMINSB VX4(770) 589#define VMINSH VX4(834) 590#define VMINSW VX4(898) 591#define VMINSD VX4(962) /* v2.07 */ 592#define VMINUB VX4(514) 593#define VMINUH VX4(578) 594#define VMINUW VX4(642) 595#define VMINUD VX4(706) /* v2.07 */ 596 597#define VCMPEQUB VX4(6) 598#define VCMPEQUH VX4(70) 599#define VCMPEQUW VX4(134) 600#define VCMPEQUD VX4(199) /* v2.07 */ 601#define VCMPGTSB VX4(774) 602#define VCMPGTSH VX4(838) 603#define VCMPGTSW VX4(902) 604#define VCMPGTSD VX4(967) /* v2.07 */ 605#define VCMPGTUB VX4(518) 606#define VCMPGTUH VX4(582) 607#define VCMPGTUW VX4(646) 608#define VCMPGTUD VX4(711) /* v2.07 */ 609#define VCMPNEB VX4(7) /* v3.00 */ 610#define VCMPNEH VX4(71) /* v3.00 */ 611#define VCMPNEW VX4(135) /* v3.00 */ 612 613#define VSLB VX4(260) 614#define VSLH VX4(324) 615#define VSLW VX4(388) 616#define VSLD VX4(1476) /* v2.07 */ 617#define VSRB VX4(516) 618#define VSRH VX4(580) 619#define VSRW VX4(644) 620#define VSRD VX4(1732) /* v2.07 */ 621#define VSRAB VX4(772) 622#define VSRAH VX4(836) 623#define VSRAW VX4(900) 624#define VSRAD VX4(964) /* v2.07 */ 625#define VRLB VX4(4) 626#define VRLH VX4(68) 627#define VRLW VX4(132) 628#define VRLD VX4(196) /* v2.07 */ 629 630#define VMULEUB VX4(520) 631#define VMULEUH VX4(584) 632#define VMULEUW VX4(648) /* v2.07 */ 633#define VMULOUB VX4(8) 634#define VMULOUH VX4(72) 635#define VMULOUW VX4(136) /* v2.07 */ 636#define VMULUWM VX4(137) /* v2.07 */ 637#define VMULLD VX4(457) /* v3.10 */ 638#define VMSUMUHM VX4(38) 639 640#define VMRGHB VX4(12) 641#define VMRGHH VX4(76) 642#define VMRGHW VX4(140) 643#define VMRGLB VX4(268) 644#define VMRGLH VX4(332) 645#define VMRGLW VX4(396) 646 647#define VPKUHUM VX4(14) 648#define VPKUWUM VX4(78) 649 650#define VAND VX4(1028) 651#define VANDC VX4(1092) 652#define VNOR VX4(1284) 653#define VOR VX4(1156) 654#define VXOR VX4(1220) 655#define VEQV VX4(1668) /* v2.07 */ 656#define VNAND VX4(1412) /* v2.07 */ 657#define VORC VX4(1348) /* v2.07 */ 658 659#define VSPLTB VX4(524) 660#define VSPLTH VX4(588) 661#define VSPLTW VX4(652) 662#define VSPLTISB VX4(780) 663#define VSPLTISH VX4(844) 664#define VSPLTISW VX4(908) 665 666#define VSLDOI VX4(44) 667 668#define XXPERMDI (OPCD(60) | (10 << 3) | 7) /* v2.06, force ax=bx=tx=1 */ 669#define XXSEL (OPCD(60) | (3 << 4) | 0xf) /* v2.06, force ax=bx=cx=tx=1 */ 670#define XXSPLTIB (OPCD(60) | (360 << 1) | 1) /* v3.00, force tx=1 */ 671 672#define MFVSRD (XO31(51) | 1) /* v2.07, force sx=1 */ 673#define MFVSRWZ (XO31(115) | 1) /* v2.07, force sx=1 */ 674#define MTVSRD (XO31(179) | 1) /* v2.07, force tx=1 */ 675#define MTVSRWZ (XO31(243) | 1) /* v2.07, force tx=1 */ 676#define MTVSRDD (XO31(435) | 1) /* v3.00, force tx=1 */ 677#define MTVSRWS (XO31(403) | 1) /* v3.00, force tx=1 */ 678 679#define RT(r) ((r)<<21) 680#define RS(r) ((r)<<21) 681#define RA(r) ((r)<<16) 682#define RB(r) ((r)<<11) 683#define TO(t) ((t)<<21) 684#define SH(s) ((s)<<11) 685#define MB(b) ((b)<<6) 686#define ME(e) ((e)<<1) 687#define BO(o) ((o)<<21) 688#define MB64(b) ((b)<<5) 689#define FXM(b) (1 << (19 - (b))) 690 691#define VRT(r) (((r) & 31) << 21) 692#define VRA(r) (((r) & 31) << 16) 693#define VRB(r) (((r) & 31) << 11) 694#define VRC(r) (((r) & 31) << 6) 695 696#define LK 1 697 698#define TAB(t, a, b) (RT(t) | RA(a) | RB(b)) 699#define SAB(s, a, b) (RS(s) | RA(a) | RB(b)) 700#define TAI(s, a, i) (RT(s) | RA(a) | ((i) & 0xffff)) 701#define SAI(s, a, i) (RS(s) | RA(a) | ((i) & 0xffff)) 702 703#define BF(n) ((n)<<23) 704#define BI(n, c) (((c)+((n)*4))<<16) 705#define BT(n, c) (((c)+((n)*4))<<21) 706#define BA(n, c) (((c)+((n)*4))<<16) 707#define BB(n, c) (((c)+((n)*4))<<11) 708#define BC_(n, c) (((c)+((n)*4))<<6) 709 710#define BO_COND_TRUE BO(12) 711#define BO_COND_FALSE BO( 4) 712#define BO_ALWAYS BO(20) 713 714enum { 715 CR_LT, 716 CR_GT, 717 CR_EQ, 718 CR_SO 719}; 720 721static const uint32_t tcg_to_bc[16] = { 722 [TCG_COND_EQ] = BC | BI(0, CR_EQ) | BO_COND_TRUE, 723 [TCG_COND_NE] = BC | BI(0, CR_EQ) | BO_COND_FALSE, 724 [TCG_COND_TSTEQ] = BC | BI(0, CR_EQ) | BO_COND_TRUE, 725 [TCG_COND_TSTNE] = BC | BI(0, CR_EQ) | BO_COND_FALSE, 726 [TCG_COND_LT] = BC | BI(0, CR_LT) | BO_COND_TRUE, 727 [TCG_COND_GE] = BC | BI(0, CR_LT) | BO_COND_FALSE, 728 [TCG_COND_LE] = BC | BI(0, CR_GT) | BO_COND_FALSE, 729 [TCG_COND_GT] = BC | BI(0, CR_GT) | BO_COND_TRUE, 730 [TCG_COND_LTU] = BC | BI(0, CR_LT) | BO_COND_TRUE, 731 [TCG_COND_GEU] = BC | BI(0, CR_LT) | BO_COND_FALSE, 732 [TCG_COND_LEU] = BC | BI(0, CR_GT) | BO_COND_FALSE, 733 [TCG_COND_GTU] = BC | BI(0, CR_GT) | BO_COND_TRUE, 734}; 735 736/* The low bit here is set if the RA and RB fields must be inverted. */ 737static const uint32_t tcg_to_isel[16] = { 738 [TCG_COND_EQ] = ISEL | BC_(0, CR_EQ), 739 [TCG_COND_NE] = ISEL | BC_(0, CR_EQ) | 1, 740 [TCG_COND_TSTEQ] = ISEL | BC_(0, CR_EQ), 741 [TCG_COND_TSTNE] = ISEL | BC_(0, CR_EQ) | 1, 742 [TCG_COND_LT] = ISEL | BC_(0, CR_LT), 743 [TCG_COND_GE] = ISEL | BC_(0, CR_LT) | 1, 744 [TCG_COND_LE] = ISEL | BC_(0, CR_GT) | 1, 745 [TCG_COND_GT] = ISEL | BC_(0, CR_GT), 746 [TCG_COND_LTU] = ISEL | BC_(0, CR_LT), 747 [TCG_COND_GEU] = ISEL | BC_(0, CR_LT) | 1, 748 [TCG_COND_LEU] = ISEL | BC_(0, CR_GT) | 1, 749 [TCG_COND_GTU] = ISEL | BC_(0, CR_GT), 750}; 751 752static bool patch_reloc(tcg_insn_unit *code_ptr, int type, 753 intptr_t value, intptr_t addend) 754{ 755 const tcg_insn_unit *target; 756 int16_t lo; 757 int32_t hi; 758 759 value += addend; 760 target = (const tcg_insn_unit *)value; 761 762 switch (type) { 763 case R_PPC_REL14: 764 return reloc_pc14(code_ptr, target); 765 case R_PPC_REL24: 766 return reloc_pc24(code_ptr, target); 767 case R_PPC64_PCREL34: 768 return reloc_pc34(code_ptr, target); 769 case R_PPC_ADDR16: 770 /* 771 * We are (slightly) abusing this relocation type. In particular, 772 * assert that the low 2 bits are zero, and do not modify them. 773 * That way we can use this with LD et al that have opcode bits 774 * in the low 2 bits of the insn. 775 */ 776 if ((value & 3) || value != (int16_t)value) { 777 return false; 778 } 779 *code_ptr = (*code_ptr & ~0xfffc) | (value & 0xfffc); 780 break; 781 case R_PPC_ADDR32: 782 /* 783 * We are abusing this relocation type. Again, this points to 784 * a pair of insns, lis + load. This is an absolute address 785 * relocation for PPC32 so the lis cannot be removed. 786 */ 787 lo = value; 788 hi = value - lo; 789 if (hi + lo != value) { 790 return false; 791 } 792 code_ptr[0] = deposit32(code_ptr[0], 0, 16, hi >> 16); 793 code_ptr[1] = deposit32(code_ptr[1], 0, 16, lo); 794 break; 795 default: 796 g_assert_not_reached(); 797 } 798 return true; 799} 800 801/* Ensure that the prefixed instruction does not cross a 64-byte boundary. */ 802static bool tcg_out_need_prefix_align(TCGContext *s) 803{ 804 return ((uintptr_t)s->code_ptr & 0x3f) == 0x3c; 805} 806 807static void tcg_out_prefix_align(TCGContext *s) 808{ 809 if (tcg_out_need_prefix_align(s)) { 810 tcg_out32(s, NOP); 811 } 812} 813 814static ptrdiff_t tcg_pcrel_diff_for_prefix(TCGContext *s, const void *target) 815{ 816 return tcg_pcrel_diff(s, target) - (tcg_out_need_prefix_align(s) ? 4 : 0); 817} 818 819/* Output Type 00 Prefix - 8-Byte Load/Store Form (8LS:D) */ 820static void tcg_out_8ls_d(TCGContext *s, tcg_insn_unit opc, unsigned rt, 821 unsigned ra, tcg_target_long imm, bool r) 822{ 823 tcg_insn_unit p, i; 824 825 p = OPCD(1) | (r << 20) | ((imm >> 16) & 0x3ffff); 826 i = opc | TAI(rt, ra, imm); 827 828 tcg_out_prefix_align(s); 829 tcg_out32(s, p); 830 tcg_out32(s, i); 831} 832 833/* Output Type 10 Prefix - Modified Load/Store Form (MLS:D) */ 834static void tcg_out_mls_d(TCGContext *s, tcg_insn_unit opc, unsigned rt, 835 unsigned ra, tcg_target_long imm, bool r) 836{ 837 tcg_insn_unit p, i; 838 839 p = OPCD(1) | (2 << 24) | (r << 20) | ((imm >> 16) & 0x3ffff); 840 i = opc | TAI(rt, ra, imm); 841 842 tcg_out_prefix_align(s); 843 tcg_out32(s, p); 844 tcg_out32(s, i); 845} 846 847static void tcg_out_mem_long(TCGContext *s, int opi, int opx, TCGReg rt, 848 TCGReg base, tcg_target_long offset); 849 850static bool tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg) 851{ 852 if (ret == arg) { 853 return true; 854 } 855 switch (type) { 856 case TCG_TYPE_I64: 857 tcg_debug_assert(TCG_TARGET_REG_BITS == 64); 858 /* fallthru */ 859 case TCG_TYPE_I32: 860 if (ret < TCG_REG_V0) { 861 if (arg < TCG_REG_V0) { 862 tcg_out32(s, OR | SAB(arg, ret, arg)); 863 break; 864 } else if (have_isa_2_07) { 865 tcg_out32(s, (type == TCG_TYPE_I32 ? MFVSRWZ : MFVSRD) 866 | VRT(arg) | RA(ret)); 867 break; 868 } else { 869 /* Altivec does not support vector->integer moves. */ 870 return false; 871 } 872 } else if (arg < TCG_REG_V0) { 873 if (have_isa_2_07) { 874 tcg_out32(s, (type == TCG_TYPE_I32 ? MTVSRWZ : MTVSRD) 875 | VRT(ret) | RA(arg)); 876 break; 877 } else { 878 /* Altivec does not support integer->vector moves. */ 879 return false; 880 } 881 } 882 /* fallthru */ 883 case TCG_TYPE_V64: 884 case TCG_TYPE_V128: 885 tcg_debug_assert(ret >= TCG_REG_V0 && arg >= TCG_REG_V0); 886 tcg_out32(s, VOR | VRT(ret) | VRA(arg) | VRB(arg)); 887 break; 888 default: 889 g_assert_not_reached(); 890 } 891 return true; 892} 893 894static void tcg_out_rld_rc(TCGContext *s, int op, TCGReg ra, TCGReg rs, 895 int sh, int mb, bool rc) 896{ 897 tcg_debug_assert(TCG_TARGET_REG_BITS == 64); 898 sh = SH(sh & 0x1f) | (((sh >> 5) & 1) << 1); 899 mb = MB64((mb >> 5) | ((mb << 1) & 0x3f)); 900 tcg_out32(s, op | RA(ra) | RS(rs) | sh | mb | rc); 901} 902 903static void tcg_out_rld(TCGContext *s, int op, TCGReg ra, TCGReg rs, 904 int sh, int mb) 905{ 906 tcg_out_rld_rc(s, op, ra, rs, sh, mb, false); 907} 908 909static void tcg_out_rlw_rc(TCGContext *s, int op, TCGReg ra, TCGReg rs, 910 int sh, int mb, int me, bool rc) 911{ 912 tcg_debug_assert((mb & 0x1f) == mb); 913 tcg_debug_assert((me & 0x1f) == me); 914 tcg_out32(s, op | RA(ra) | RS(rs) | SH(sh & 0x1f) | MB(mb) | ME(me) | rc); 915} 916 917static void tcg_out_rlw(TCGContext *s, int op, TCGReg ra, TCGReg rs, 918 int sh, int mb, int me) 919{ 920 tcg_out_rlw_rc(s, op, ra, rs, sh, mb, me, false); 921} 922 923static void tcg_out_ext8s(TCGContext *s, TCGType type, TCGReg dst, TCGReg src) 924{ 925 tcg_out32(s, EXTSB | RA(dst) | RS(src)); 926} 927 928static void tcg_out_ext8u(TCGContext *s, TCGReg dst, TCGReg src) 929{ 930 tcg_out32(s, ANDI | SAI(src, dst, 0xff)); 931} 932 933static void tcg_out_ext16s(TCGContext *s, TCGType type, TCGReg dst, TCGReg src) 934{ 935 tcg_out32(s, EXTSH | RA(dst) | RS(src)); 936} 937 938static void tcg_out_ext16u(TCGContext *s, TCGReg dst, TCGReg src) 939{ 940 tcg_out32(s, ANDI | SAI(src, dst, 0xffff)); 941} 942 943static void tcg_out_ext32s(TCGContext *s, TCGReg dst, TCGReg src) 944{ 945 tcg_debug_assert(TCG_TARGET_REG_BITS == 64); 946 tcg_out32(s, EXTSW | RA(dst) | RS(src)); 947} 948 949static void tcg_out_ext32u(TCGContext *s, TCGReg dst, TCGReg src) 950{ 951 tcg_debug_assert(TCG_TARGET_REG_BITS == 64); 952 tcg_out_rld(s, RLDICL, dst, src, 0, 32); 953} 954 955static void tcg_out_exts_i32_i64(TCGContext *s, TCGReg dst, TCGReg src) 956{ 957 tcg_out_ext32s(s, dst, src); 958} 959 960static void tcg_out_extu_i32_i64(TCGContext *s, TCGReg dst, TCGReg src) 961{ 962 tcg_out_ext32u(s, dst, src); 963} 964 965static void tcg_out_extrl_i64_i32(TCGContext *s, TCGReg rd, TCGReg rn) 966{ 967 tcg_debug_assert(TCG_TARGET_REG_BITS == 64); 968 tcg_out_mov(s, TCG_TYPE_I32, rd, rn); 969} 970 971static inline void tcg_out_shli32(TCGContext *s, TCGReg dst, TCGReg src, int c) 972{ 973 tcg_out_rlw(s, RLWINM, dst, src, c, 0, 31 - c); 974} 975 976static inline void tcg_out_shli64(TCGContext *s, TCGReg dst, TCGReg src, int c) 977{ 978 tcg_out_rld(s, RLDICR, dst, src, c, 63 - c); 979} 980 981static inline void tcg_out_sari32(TCGContext *s, TCGReg dst, TCGReg src, int c) 982{ 983 /* Limit immediate shift count lest we create an illegal insn. */ 984 tcg_out32(s, SRAWI | RA(dst) | RS(src) | SH(c & 31)); 985} 986 987static inline void tcg_out_shri32(TCGContext *s, TCGReg dst, TCGReg src, int c) 988{ 989 tcg_out_rlw(s, RLWINM, dst, src, 32 - c, c, 31); 990} 991 992static inline void tcg_out_shri64(TCGContext *s, TCGReg dst, TCGReg src, int c) 993{ 994 tcg_out_rld(s, RLDICL, dst, src, 64 - c, c); 995} 996 997static inline void tcg_out_sari64(TCGContext *s, TCGReg dst, TCGReg src, int c) 998{ 999 tcg_out32(s, SRADI | RA(dst) | RS(src) | SH(c & 0x1f) | ((c >> 4) & 2)); 1000} 1001 1002static void tcg_out_addpcis(TCGContext *s, TCGReg dst, intptr_t imm) 1003{ 1004 uint32_t d0, d1, d2; 1005 1006 tcg_debug_assert((imm & 0xffff) == 0); 1007 tcg_debug_assert(imm == (int32_t)imm); 1008 1009 d2 = extract32(imm, 16, 1); 1010 d1 = extract32(imm, 17, 5); 1011 d0 = extract32(imm, 22, 10); 1012 tcg_out32(s, ADDPCIS | RT(dst) | (d1 << 16) | (d0 << 6) | d2); 1013} 1014 1015static void tcg_out_bswap16(TCGContext *s, TCGReg dst, TCGReg src, int flags) 1016{ 1017 TCGReg tmp = dst == src ? TCG_REG_R0 : dst; 1018 1019 if (have_isa_3_10) { 1020 tcg_out32(s, BRH | RA(dst) | RS(src)); 1021 if (flags & TCG_BSWAP_OS) { 1022 tcg_out_ext16s(s, TCG_TYPE_REG, dst, dst); 1023 } else if ((flags & (TCG_BSWAP_IZ | TCG_BSWAP_OZ)) == TCG_BSWAP_OZ) { 1024 tcg_out_ext16u(s, dst, dst); 1025 } 1026 return; 1027 } 1028 1029 /* 1030 * In the following, 1031 * dep(a, b, m) -> (a & ~m) | (b & m) 1032 * 1033 * Begin with: src = xxxxabcd 1034 */ 1035 /* tmp = rol32(src, 24) & 0x000000ff = 0000000c */ 1036 tcg_out_rlw(s, RLWINM, tmp, src, 24, 24, 31); 1037 /* tmp = dep(tmp, rol32(src, 8), 0x0000ff00) = 000000dc */ 1038 tcg_out_rlw(s, RLWIMI, tmp, src, 8, 16, 23); 1039 1040 if (flags & TCG_BSWAP_OS) { 1041 tcg_out_ext16s(s, TCG_TYPE_REG, dst, tmp); 1042 } else { 1043 tcg_out_mov(s, TCG_TYPE_REG, dst, tmp); 1044 } 1045} 1046 1047static void tcg_out_bswap32(TCGContext *s, TCGReg dst, TCGReg src, int flags) 1048{ 1049 TCGReg tmp = dst == src ? TCG_REG_R0 : dst; 1050 1051 if (have_isa_3_10) { 1052 tcg_out32(s, BRW | RA(dst) | RS(src)); 1053 if (flags & TCG_BSWAP_OS) { 1054 tcg_out_ext32s(s, dst, dst); 1055 } else if ((flags & (TCG_BSWAP_IZ | TCG_BSWAP_OZ)) == TCG_BSWAP_OZ) { 1056 tcg_out_ext32u(s, dst, dst); 1057 } 1058 return; 1059 } 1060 1061 /* 1062 * Stolen from gcc's builtin_bswap32. 1063 * In the following, 1064 * dep(a, b, m) -> (a & ~m) | (b & m) 1065 * 1066 * Begin with: src = xxxxabcd 1067 */ 1068 /* tmp = rol32(src, 8) & 0xffffffff = 0000bcda */ 1069 tcg_out_rlw(s, RLWINM, tmp, src, 8, 0, 31); 1070 /* tmp = dep(tmp, rol32(src, 24), 0xff000000) = 0000dcda */ 1071 tcg_out_rlw(s, RLWIMI, tmp, src, 24, 0, 7); 1072 /* tmp = dep(tmp, rol32(src, 24), 0x0000ff00) = 0000dcba */ 1073 tcg_out_rlw(s, RLWIMI, tmp, src, 24, 16, 23); 1074 1075 if (flags & TCG_BSWAP_OS) { 1076 tcg_out_ext32s(s, dst, tmp); 1077 } else { 1078 tcg_out_mov(s, TCG_TYPE_REG, dst, tmp); 1079 } 1080} 1081 1082static void tcg_out_bswap64(TCGContext *s, TCGReg dst, TCGReg src) 1083{ 1084 TCGReg t0 = dst == src ? TCG_REG_R0 : dst; 1085 TCGReg t1 = dst == src ? dst : TCG_REG_R0; 1086 1087 if (have_isa_3_10) { 1088 tcg_out32(s, BRD | RA(dst) | RS(src)); 1089 return; 1090 } 1091 1092 /* 1093 * In the following, 1094 * dep(a, b, m) -> (a & ~m) | (b & m) 1095 * 1096 * Begin with: src = abcdefgh 1097 */ 1098 /* t0 = rol32(src, 8) & 0xffffffff = 0000fghe */ 1099 tcg_out_rlw(s, RLWINM, t0, src, 8, 0, 31); 1100 /* t0 = dep(t0, rol32(src, 24), 0xff000000) = 0000hghe */ 1101 tcg_out_rlw(s, RLWIMI, t0, src, 24, 0, 7); 1102 /* t0 = dep(t0, rol32(src, 24), 0x0000ff00) = 0000hgfe */ 1103 tcg_out_rlw(s, RLWIMI, t0, src, 24, 16, 23); 1104 1105 /* t0 = rol64(t0, 32) = hgfe0000 */ 1106 tcg_out_rld(s, RLDICL, t0, t0, 32, 0); 1107 /* t1 = rol64(src, 32) = efghabcd */ 1108 tcg_out_rld(s, RLDICL, t1, src, 32, 0); 1109 1110 /* t0 = dep(t0, rol32(t1, 24), 0xffffffff) = hgfebcda */ 1111 tcg_out_rlw(s, RLWIMI, t0, t1, 8, 0, 31); 1112 /* t0 = dep(t0, rol32(t1, 24), 0xff000000) = hgfedcda */ 1113 tcg_out_rlw(s, RLWIMI, t0, t1, 24, 0, 7); 1114 /* t0 = dep(t0, rol32(t1, 24), 0x0000ff00) = hgfedcba */ 1115 tcg_out_rlw(s, RLWIMI, t0, t1, 24, 16, 23); 1116 1117 tcg_out_mov(s, TCG_TYPE_REG, dst, t0); 1118} 1119 1120/* Emit a move into ret of arg, if it can be done in one insn. */ 1121static bool tcg_out_movi_one(TCGContext *s, TCGReg ret, tcg_target_long arg) 1122{ 1123 if (arg == (int16_t)arg) { 1124 tcg_out32(s, ADDI | TAI(ret, 0, arg)); 1125 return true; 1126 } 1127 if (arg == (int32_t)arg && (arg & 0xffff) == 0) { 1128 tcg_out32(s, ADDIS | TAI(ret, 0, arg >> 16)); 1129 return true; 1130 } 1131 return false; 1132} 1133 1134static void tcg_out_movi_int(TCGContext *s, TCGType type, TCGReg ret, 1135 tcg_target_long arg, bool in_prologue) 1136{ 1137 intptr_t tb_diff; 1138 tcg_target_long tmp; 1139 int shift; 1140 1141 tcg_debug_assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32); 1142 1143 if (TCG_TARGET_REG_BITS == 64 && type == TCG_TYPE_I32) { 1144 arg = (int32_t)arg; 1145 } 1146 1147 /* Load 16-bit immediates with one insn. */ 1148 if (tcg_out_movi_one(s, ret, arg)) { 1149 return; 1150 } 1151 1152 /* Load addresses within the TB with one insn. */ 1153 tb_diff = ppc_tbrel_diff(s, (void *)arg); 1154 if (!in_prologue && USE_REG_TB && tb_diff == (int16_t)tb_diff) { 1155 tcg_out32(s, ADDI | TAI(ret, TCG_REG_TB, tb_diff)); 1156 return; 1157 } 1158 1159 /* 1160 * Load values up to 34 bits, and pc-relative addresses, 1161 * with one prefixed insn. 1162 */ 1163 if (have_isa_3_10) { 1164 if (arg == sextract64(arg, 0, 34)) { 1165 /* pli ret,value = paddi ret,0,value,0 */ 1166 tcg_out_mls_d(s, ADDI, ret, 0, arg, 0); 1167 return; 1168 } 1169 1170 tmp = tcg_pcrel_diff_for_prefix(s, (void *)arg); 1171 if (tmp == sextract64(tmp, 0, 34)) { 1172 /* pla ret,value = paddi ret,0,value,1 */ 1173 tcg_out_mls_d(s, ADDI, ret, 0, tmp, 1); 1174 return; 1175 } 1176 } 1177 1178 /* Load 32-bit immediates with two insns. Note that we've already 1179 eliminated bare ADDIS, so we know both insns are required. */ 1180 if (TCG_TARGET_REG_BITS == 32 || arg == (int32_t)arg) { 1181 tcg_out32(s, ADDIS | TAI(ret, 0, arg >> 16)); 1182 tcg_out32(s, ORI | SAI(ret, ret, arg)); 1183 return; 1184 } 1185 if (arg == (uint32_t)arg && !(arg & 0x8000)) { 1186 tcg_out32(s, ADDI | TAI(ret, 0, arg)); 1187 tcg_out32(s, ORIS | SAI(ret, ret, arg >> 16)); 1188 return; 1189 } 1190 1191 /* Load masked 16-bit value. */ 1192 if (arg > 0 && (arg & 0x8000)) { 1193 tmp = arg | 0x7fff; 1194 if ((tmp & (tmp + 1)) == 0) { 1195 int mb = clz64(tmp + 1) + 1; 1196 tcg_out32(s, ADDI | TAI(ret, 0, arg)); 1197 tcg_out_rld(s, RLDICL, ret, ret, 0, mb); 1198 return; 1199 } 1200 } 1201 1202 /* Load common masks with 2 insns. */ 1203 shift = ctz64(arg); 1204 tmp = arg >> shift; 1205 if (tmp == (int16_t)tmp) { 1206 tcg_out32(s, ADDI | TAI(ret, 0, tmp)); 1207 tcg_out_shli64(s, ret, ret, shift); 1208 return; 1209 } 1210 shift = clz64(arg); 1211 if (tcg_out_movi_one(s, ret, arg << shift)) { 1212 tcg_out_shri64(s, ret, ret, shift); 1213 return; 1214 } 1215 1216 /* Load addresses within 2GB with 2 insns. */ 1217 if (have_isa_3_00) { 1218 intptr_t hi = tcg_pcrel_diff(s, (void *)arg) - 4; 1219 int16_t lo = hi; 1220 1221 hi -= lo; 1222 if (hi == (int32_t)hi) { 1223 tcg_out_addpcis(s, TCG_REG_TMP2, hi); 1224 tcg_out32(s, ADDI | TAI(ret, TCG_REG_TMP2, lo)); 1225 return; 1226 } 1227 } 1228 1229 /* Load addresses within 2GB of TB with 2 (or rarely 3) insns. */ 1230 if (!in_prologue && USE_REG_TB && tb_diff == (int32_t)tb_diff) { 1231 tcg_out_mem_long(s, ADDI, ADD, ret, TCG_REG_TB, tb_diff); 1232 return; 1233 } 1234 1235 /* Use the constant pool, if possible. */ 1236 if (!in_prologue && USE_REG_TB) { 1237 new_pool_label(s, arg, R_PPC_ADDR16, s->code_ptr, 1238 ppc_tbrel_diff(s, NULL)); 1239 tcg_out32(s, LD | TAI(ret, TCG_REG_TB, 0)); 1240 return; 1241 } 1242 if (have_isa_3_10) { 1243 tcg_out_8ls_d(s, PLD, ret, 0, 0, 1); 1244 new_pool_label(s, arg, R_PPC64_PCREL34, s->code_ptr - 2, 0); 1245 return; 1246 } 1247 if (have_isa_3_00) { 1248 tcg_out_addpcis(s, TCG_REG_TMP2, 0); 1249 new_pool_label(s, arg, R_PPC_REL14, s->code_ptr, 0); 1250 tcg_out32(s, LD | TAI(ret, TCG_REG_TMP2, 0)); 1251 return; 1252 } 1253 1254 tmp = arg >> 31 >> 1; 1255 tcg_out_movi(s, TCG_TYPE_I32, ret, tmp); 1256 if (tmp) { 1257 tcg_out_shli64(s, ret, ret, 32); 1258 } 1259 if (arg & 0xffff0000) { 1260 tcg_out32(s, ORIS | SAI(ret, ret, arg >> 16)); 1261 } 1262 if (arg & 0xffff) { 1263 tcg_out32(s, ORI | SAI(ret, ret, arg)); 1264 } 1265} 1266 1267static void tcg_out_dupi_vec(TCGContext *s, TCGType type, unsigned vece, 1268 TCGReg ret, int64_t val) 1269{ 1270 uint32_t load_insn; 1271 int rel, low; 1272 intptr_t add; 1273 1274 switch (vece) { 1275 case MO_8: 1276 low = (int8_t)val; 1277 if (low >= -16 && low < 16) { 1278 tcg_out32(s, VSPLTISB | VRT(ret) | ((val & 31) << 16)); 1279 return; 1280 } 1281 if (have_isa_3_00) { 1282 tcg_out32(s, XXSPLTIB | VRT(ret) | ((val & 0xff) << 11)); 1283 return; 1284 } 1285 break; 1286 1287 case MO_16: 1288 low = (int16_t)val; 1289 if (low >= -16 && low < 16) { 1290 tcg_out32(s, VSPLTISH | VRT(ret) | ((val & 31) << 16)); 1291 return; 1292 } 1293 break; 1294 1295 case MO_32: 1296 low = (int32_t)val; 1297 if (low >= -16 && low < 16) { 1298 tcg_out32(s, VSPLTISW | VRT(ret) | ((val & 31) << 16)); 1299 return; 1300 } 1301 break; 1302 } 1303 1304 /* 1305 * Otherwise we must load the value from the constant pool. 1306 */ 1307 if (USE_REG_TB) { 1308 rel = R_PPC_ADDR16; 1309 add = ppc_tbrel_diff(s, NULL); 1310 } else if (have_isa_3_10) { 1311 if (type == TCG_TYPE_V64) { 1312 tcg_out_8ls_d(s, PLXSD, ret & 31, 0, 0, 1); 1313 new_pool_label(s, val, R_PPC64_PCREL34, s->code_ptr - 2, 0); 1314 } else { 1315 tcg_out_8ls_d(s, PLXV, ret & 31, 0, 0, 1); 1316 new_pool_l2(s, R_PPC64_PCREL34, s->code_ptr - 2, 0, val, val); 1317 } 1318 return; 1319 } else if (have_isa_3_00) { 1320 tcg_out_addpcis(s, TCG_REG_TMP1, 0); 1321 rel = R_PPC_REL14; 1322 add = 0; 1323 } else { 1324 rel = R_PPC_ADDR32; 1325 add = 0; 1326 } 1327 1328 if (have_vsx) { 1329 load_insn = type == TCG_TYPE_V64 ? LXSDX : LXVDSX; 1330 load_insn |= VRT(ret) | RB(TCG_REG_TMP1); 1331 if (TCG_TARGET_REG_BITS == 64) { 1332 new_pool_label(s, val, rel, s->code_ptr, add); 1333 } else { 1334 new_pool_l2(s, rel, s->code_ptr, add, val >> 32, val); 1335 } 1336 } else { 1337 load_insn = LVX | VRT(ret) | RB(TCG_REG_TMP1); 1338 if (TCG_TARGET_REG_BITS == 64) { 1339 new_pool_l2(s, rel, s->code_ptr, add, val, val); 1340 } else { 1341 new_pool_l4(s, rel, s->code_ptr, add, 1342 val >> 32, val, val >> 32, val); 1343 } 1344 } 1345 1346 if (USE_REG_TB) { 1347 tcg_out32(s, ADDI | TAI(TCG_REG_TMP1, 0, 0)); 1348 load_insn |= RA(TCG_REG_TB); 1349 } else if (have_isa_3_00) { 1350 tcg_out32(s, ADDI | TAI(TCG_REG_TMP1, TCG_REG_TMP1, 0)); 1351 } else { 1352 tcg_out32(s, ADDIS | TAI(TCG_REG_TMP1, 0, 0)); 1353 tcg_out32(s, ADDI | TAI(TCG_REG_TMP1, TCG_REG_TMP1, 0)); 1354 } 1355 tcg_out32(s, load_insn); 1356} 1357 1358static void tcg_out_movi(TCGContext *s, TCGType type, TCGReg ret, 1359 tcg_target_long arg) 1360{ 1361 switch (type) { 1362 case TCG_TYPE_I32: 1363 case TCG_TYPE_I64: 1364 tcg_debug_assert(ret < TCG_REG_V0); 1365 tcg_out_movi_int(s, type, ret, arg, false); 1366 break; 1367 1368 default: 1369 g_assert_not_reached(); 1370 } 1371} 1372 1373static bool tcg_out_xchg(TCGContext *s, TCGType type, TCGReg r1, TCGReg r2) 1374{ 1375 return false; 1376} 1377 1378static void tcg_out_addi_ptr(TCGContext *s, TCGReg rd, TCGReg rs, 1379 tcg_target_long imm) 1380{ 1381 /* This function is only used for passing structs by reference. */ 1382 g_assert_not_reached(); 1383} 1384 1385static bool mask_operand(uint32_t c, int *mb, int *me) 1386{ 1387 uint32_t lsb, test; 1388 1389 /* Accept a bit pattern like: 1390 0....01....1 1391 1....10....0 1392 0..01..10..0 1393 Keep track of the transitions. */ 1394 if (c == 0 || c == -1) { 1395 return false; 1396 } 1397 test = c; 1398 lsb = test & -test; 1399 test += lsb; 1400 if (test & (test - 1)) { 1401 return false; 1402 } 1403 1404 *me = clz32(lsb); 1405 *mb = test ? clz32(test & -test) + 1 : 0; 1406 return true; 1407} 1408 1409static bool mask64_operand(uint64_t c, int *mb, int *me) 1410{ 1411 uint64_t lsb; 1412 1413 if (c == 0) { 1414 return false; 1415 } 1416 1417 lsb = c & -c; 1418 /* Accept 1..10..0. */ 1419 if (c == -lsb) { 1420 *mb = 0; 1421 *me = clz64(lsb); 1422 return true; 1423 } 1424 /* Accept 0..01..1. */ 1425 if (lsb == 1 && (c & (c + 1)) == 0) { 1426 *mb = clz64(c + 1) + 1; 1427 *me = 63; 1428 return true; 1429 } 1430 return false; 1431} 1432 1433static void tcg_out_andi32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c) 1434{ 1435 int mb, me; 1436 1437 if (mask_operand(c, &mb, &me)) { 1438 tcg_out_rlw(s, RLWINM, dst, src, 0, mb, me); 1439 } else if ((c & 0xffff) == c) { 1440 tcg_out32(s, ANDI | SAI(src, dst, c)); 1441 return; 1442 } else if ((c & 0xffff0000) == c) { 1443 tcg_out32(s, ANDIS | SAI(src, dst, c >> 16)); 1444 return; 1445 } else { 1446 tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_R0, c); 1447 tcg_out32(s, AND | SAB(src, dst, TCG_REG_R0)); 1448 } 1449} 1450 1451static void tcg_out_andi64(TCGContext *s, TCGReg dst, TCGReg src, uint64_t c) 1452{ 1453 int mb, me; 1454 1455 tcg_debug_assert(TCG_TARGET_REG_BITS == 64); 1456 if (mask64_operand(c, &mb, &me)) { 1457 if (mb == 0) { 1458 tcg_out_rld(s, RLDICR, dst, src, 0, me); 1459 } else { 1460 tcg_out_rld(s, RLDICL, dst, src, 0, mb); 1461 } 1462 } else if ((c & 0xffff) == c) { 1463 tcg_out32(s, ANDI | SAI(src, dst, c)); 1464 return; 1465 } else if ((c & 0xffff0000) == c) { 1466 tcg_out32(s, ANDIS | SAI(src, dst, c >> 16)); 1467 return; 1468 } else { 1469 tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_R0, c); 1470 tcg_out32(s, AND | SAB(src, dst, TCG_REG_R0)); 1471 } 1472} 1473 1474static void tcg_out_zori32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c, 1475 int op_lo, int op_hi) 1476{ 1477 if (c >> 16) { 1478 tcg_out32(s, op_hi | SAI(src, dst, c >> 16)); 1479 src = dst; 1480 } 1481 if (c & 0xffff) { 1482 tcg_out32(s, op_lo | SAI(src, dst, c)); 1483 src = dst; 1484 } 1485} 1486 1487static void tcg_out_ori32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c) 1488{ 1489 tcg_out_zori32(s, dst, src, c, ORI, ORIS); 1490} 1491 1492static void tcg_out_xori32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c) 1493{ 1494 tcg_out_zori32(s, dst, src, c, XORI, XORIS); 1495} 1496 1497static void tcg_out_b(TCGContext *s, int mask, const tcg_insn_unit *target) 1498{ 1499 ptrdiff_t disp = tcg_pcrel_diff(s, target); 1500 if (in_range_b(disp)) { 1501 tcg_out32(s, B | (disp & 0x3fffffc) | mask); 1502 } else { 1503 tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R0, (uintptr_t)target); 1504 tcg_out32(s, MTSPR | RS(TCG_REG_R0) | CTR); 1505 tcg_out32(s, BCCTR | BO_ALWAYS | mask); 1506 } 1507} 1508 1509static void tcg_out_mem_long(TCGContext *s, int opi, int opx, TCGReg rt, 1510 TCGReg base, tcg_target_long offset) 1511{ 1512 tcg_target_long orig = offset, l0, l1, extra = 0, align = 0; 1513 bool is_int_store = false; 1514 TCGReg rs = TCG_REG_TMP1; 1515 1516 switch (opi) { 1517 case LD: case LWA: 1518 align = 3; 1519 /* FALLTHRU */ 1520 default: 1521 if (rt > TCG_REG_R0 && rt < TCG_REG_V0) { 1522 rs = rt; 1523 break; 1524 } 1525 break; 1526 case LXSD: 1527 case STXSD: 1528 align = 3; 1529 break; 1530 case LXV: 1531 case STXV: 1532 align = 15; 1533 break; 1534 case STD: 1535 align = 3; 1536 /* FALLTHRU */ 1537 case STB: case STH: case STW: 1538 is_int_store = true; 1539 break; 1540 } 1541 1542 /* For unaligned or large offsets, use the prefixed form. */ 1543 if (have_isa_3_10 1544 && (offset != (int16_t)offset || (offset & align)) 1545 && offset == sextract64(offset, 0, 34)) { 1546 /* 1547 * Note that the MLS:D insns retain their un-prefixed opcode, 1548 * while the 8LS:D insns use a different opcode space. 1549 */ 1550 switch (opi) { 1551 case LBZ: 1552 case LHZ: 1553 case LHA: 1554 case LWZ: 1555 case STB: 1556 case STH: 1557 case STW: 1558 case ADDI: 1559 tcg_out_mls_d(s, opi, rt, base, offset, 0); 1560 return; 1561 case LWA: 1562 tcg_out_8ls_d(s, PLWA, rt, base, offset, 0); 1563 return; 1564 case LD: 1565 tcg_out_8ls_d(s, PLD, rt, base, offset, 0); 1566 return; 1567 case STD: 1568 tcg_out_8ls_d(s, PSTD, rt, base, offset, 0); 1569 return; 1570 case LXSD: 1571 tcg_out_8ls_d(s, PLXSD, rt & 31, base, offset, 0); 1572 return; 1573 case STXSD: 1574 tcg_out_8ls_d(s, PSTXSD, rt & 31, base, offset, 0); 1575 return; 1576 case LXV: 1577 tcg_out_8ls_d(s, PLXV, rt & 31, base, offset, 0); 1578 return; 1579 case STXV: 1580 tcg_out_8ls_d(s, PSTXV, rt & 31, base, offset, 0); 1581 return; 1582 } 1583 } 1584 1585 /* For unaligned, or very large offsets, use the indexed form. */ 1586 if (offset & align || offset != (int32_t)offset || opi == 0) { 1587 if (rs == base) { 1588 rs = TCG_REG_R0; 1589 } 1590 tcg_debug_assert(!is_int_store || rs != rt); 1591 tcg_out_movi(s, TCG_TYPE_PTR, rs, orig); 1592 tcg_out32(s, opx | TAB(rt & 31, base, rs)); 1593 return; 1594 } 1595 1596 l0 = (int16_t)offset; 1597 offset = (offset - l0) >> 16; 1598 l1 = (int16_t)offset; 1599 1600 if (l1 < 0 && orig >= 0) { 1601 extra = 0x4000; 1602 l1 = (int16_t)(offset - 0x4000); 1603 } 1604 if (l1) { 1605 tcg_out32(s, ADDIS | TAI(rs, base, l1)); 1606 base = rs; 1607 } 1608 if (extra) { 1609 tcg_out32(s, ADDIS | TAI(rs, base, extra)); 1610 base = rs; 1611 } 1612 if (opi != ADDI || base != rt || l0 != 0) { 1613 tcg_out32(s, opi | TAI(rt & 31, base, l0)); 1614 } 1615} 1616 1617static void tcg_out_vsldoi(TCGContext *s, TCGReg ret, 1618 TCGReg va, TCGReg vb, int shb) 1619{ 1620 tcg_out32(s, VSLDOI | VRT(ret) | VRA(va) | VRB(vb) | (shb << 6)); 1621} 1622 1623static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg ret, 1624 TCGReg base, intptr_t offset) 1625{ 1626 int shift; 1627 1628 switch (type) { 1629 case TCG_TYPE_I32: 1630 if (ret < TCG_REG_V0) { 1631 tcg_out_mem_long(s, LWZ, LWZX, ret, base, offset); 1632 break; 1633 } 1634 if (have_isa_2_07 && have_vsx) { 1635 tcg_out_mem_long(s, 0, LXSIWZX, ret, base, offset); 1636 break; 1637 } 1638 tcg_debug_assert((offset & 3) == 0); 1639 tcg_out_mem_long(s, 0, LVEWX, ret, base, offset); 1640 shift = (offset - 4) & 0xc; 1641 if (shift) { 1642 tcg_out_vsldoi(s, ret, ret, ret, shift); 1643 } 1644 break; 1645 case TCG_TYPE_I64: 1646 if (ret < TCG_REG_V0) { 1647 tcg_debug_assert(TCG_TARGET_REG_BITS == 64); 1648 tcg_out_mem_long(s, LD, LDX, ret, base, offset); 1649 break; 1650 } 1651 /* fallthru */ 1652 case TCG_TYPE_V64: 1653 tcg_debug_assert(ret >= TCG_REG_V0); 1654 if (have_vsx) { 1655 tcg_out_mem_long(s, have_isa_3_00 ? LXSD : 0, LXSDX, 1656 ret, base, offset); 1657 break; 1658 } 1659 tcg_debug_assert((offset & 7) == 0); 1660 tcg_out_mem_long(s, 0, LVX, ret, base, offset & -16); 1661 if (offset & 8) { 1662 tcg_out_vsldoi(s, ret, ret, ret, 8); 1663 } 1664 break; 1665 case TCG_TYPE_V128: 1666 tcg_debug_assert(ret >= TCG_REG_V0); 1667 tcg_debug_assert((offset & 15) == 0); 1668 tcg_out_mem_long(s, have_isa_3_00 ? LXV : 0, 1669 LVX, ret, base, offset); 1670 break; 1671 default: 1672 g_assert_not_reached(); 1673 } 1674} 1675 1676static void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg, 1677 TCGReg base, intptr_t offset) 1678{ 1679 int shift; 1680 1681 switch (type) { 1682 case TCG_TYPE_I32: 1683 if (arg < TCG_REG_V0) { 1684 tcg_out_mem_long(s, STW, STWX, arg, base, offset); 1685 break; 1686 } 1687 if (have_isa_2_07 && have_vsx) { 1688 tcg_out_mem_long(s, 0, STXSIWX, arg, base, offset); 1689 break; 1690 } 1691 assert((offset & 3) == 0); 1692 tcg_debug_assert((offset & 3) == 0); 1693 shift = (offset - 4) & 0xc; 1694 if (shift) { 1695 tcg_out_vsldoi(s, TCG_VEC_TMP1, arg, arg, shift); 1696 arg = TCG_VEC_TMP1; 1697 } 1698 tcg_out_mem_long(s, 0, STVEWX, arg, base, offset); 1699 break; 1700 case TCG_TYPE_I64: 1701 if (arg < TCG_REG_V0) { 1702 tcg_debug_assert(TCG_TARGET_REG_BITS == 64); 1703 tcg_out_mem_long(s, STD, STDX, arg, base, offset); 1704 break; 1705 } 1706 /* fallthru */ 1707 case TCG_TYPE_V64: 1708 tcg_debug_assert(arg >= TCG_REG_V0); 1709 if (have_vsx) { 1710 tcg_out_mem_long(s, have_isa_3_00 ? STXSD : 0, 1711 STXSDX, arg, base, offset); 1712 break; 1713 } 1714 tcg_debug_assert((offset & 7) == 0); 1715 if (offset & 8) { 1716 tcg_out_vsldoi(s, TCG_VEC_TMP1, arg, arg, 8); 1717 arg = TCG_VEC_TMP1; 1718 } 1719 tcg_out_mem_long(s, 0, STVEWX, arg, base, offset); 1720 tcg_out_mem_long(s, 0, STVEWX, arg, base, offset + 4); 1721 break; 1722 case TCG_TYPE_V128: 1723 tcg_debug_assert(arg >= TCG_REG_V0); 1724 tcg_out_mem_long(s, have_isa_3_00 ? STXV : 0, 1725 STVX, arg, base, offset); 1726 break; 1727 default: 1728 g_assert_not_reached(); 1729 } 1730} 1731 1732static inline bool tcg_out_sti(TCGContext *s, TCGType type, TCGArg val, 1733 TCGReg base, intptr_t ofs) 1734{ 1735 return false; 1736} 1737 1738/* 1739 * Set dest non-zero if and only if (arg1 & arg2) is non-zero. 1740 * If RC, then also set RC0. 1741 */ 1742static void tcg_out_test(TCGContext *s, TCGReg dest, TCGReg arg1, TCGArg arg2, 1743 bool const_arg2, TCGType type, bool rc) 1744{ 1745 int mb, me; 1746 1747 if (!const_arg2) { 1748 tcg_out32(s, AND | SAB(arg1, dest, arg2) | rc); 1749 return; 1750 } 1751 1752 if (type == TCG_TYPE_I32) { 1753 arg2 = (uint32_t)arg2; 1754 } 1755 1756 if ((arg2 & ~0xffff) == 0) { 1757 tcg_out32(s, ANDI | SAI(arg1, dest, arg2)); 1758 return; 1759 } 1760 if ((arg2 & ~0xffff0000ull) == 0) { 1761 tcg_out32(s, ANDIS | SAI(arg1, dest, arg2 >> 16)); 1762 return; 1763 } 1764 if (arg2 == (uint32_t)arg2 && mask_operand(arg2, &mb, &me)) { 1765 tcg_out_rlw_rc(s, RLWINM, dest, arg1, 0, mb, me, rc); 1766 return; 1767 } 1768 if (TCG_TARGET_REG_BITS == 64) { 1769 int sh = clz64(arg2); 1770 if (mask64_operand(arg2 << sh, &mb, &me)) { 1771 tcg_out_rld_rc(s, RLDICR, dest, arg1, sh, me, rc); 1772 return; 1773 } 1774 } 1775 /* Constraints should satisfy this. */ 1776 g_assert_not_reached(); 1777} 1778 1779static void tcg_out_cmp(TCGContext *s, int cond, TCGArg arg1, TCGArg arg2, 1780 int const_arg2, int cr, TCGType type) 1781{ 1782 int imm; 1783 uint32_t op; 1784 1785 tcg_debug_assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32); 1786 1787 /* 1788 * Simplify the comparisons below wrt CMPI. 1789 * All of the tests are 16-bit, so a 32-bit sign extend always works. 1790 */ 1791 if (type == TCG_TYPE_I32) { 1792 arg2 = (int32_t)arg2; 1793 } 1794 1795 switch (cond) { 1796 case TCG_COND_EQ: 1797 case TCG_COND_NE: 1798 if (const_arg2) { 1799 if ((int16_t) arg2 == arg2) { 1800 op = CMPI; 1801 imm = 1; 1802 break; 1803 } else if ((uint16_t) arg2 == arg2) { 1804 op = CMPLI; 1805 imm = 1; 1806 break; 1807 } 1808 } 1809 op = CMPL; 1810 imm = 0; 1811 break; 1812 1813 case TCG_COND_TSTEQ: 1814 case TCG_COND_TSTNE: 1815 tcg_debug_assert(cr == 0); 1816 tcg_out_test(s, TCG_REG_R0, arg1, arg2, const_arg2, type, true); 1817 return; 1818 1819 case TCG_COND_LT: 1820 case TCG_COND_GE: 1821 case TCG_COND_LE: 1822 case TCG_COND_GT: 1823 if (const_arg2) { 1824 if ((int16_t) arg2 == arg2) { 1825 op = CMPI; 1826 imm = 1; 1827 break; 1828 } 1829 } 1830 op = CMP; 1831 imm = 0; 1832 break; 1833 1834 case TCG_COND_LTU: 1835 case TCG_COND_GEU: 1836 case TCG_COND_LEU: 1837 case TCG_COND_GTU: 1838 if (const_arg2) { 1839 if ((uint16_t) arg2 == arg2) { 1840 op = CMPLI; 1841 imm = 1; 1842 break; 1843 } 1844 } 1845 op = CMPL; 1846 imm = 0; 1847 break; 1848 1849 default: 1850 g_assert_not_reached(); 1851 } 1852 op |= BF(cr) | ((type == TCG_TYPE_I64) << 21); 1853 1854 if (imm) { 1855 tcg_out32(s, op | RA(arg1) | (arg2 & 0xffff)); 1856 } else { 1857 if (const_arg2) { 1858 tcg_out_movi(s, type, TCG_REG_R0, arg2); 1859 arg2 = TCG_REG_R0; 1860 } 1861 tcg_out32(s, op | RA(arg1) | RB(arg2)); 1862 } 1863} 1864 1865static void tcg_out_setcond_eq0(TCGContext *s, TCGType type, 1866 TCGReg dst, TCGReg src, bool neg) 1867{ 1868 if (neg && (TCG_TARGET_REG_BITS == 32 || type == TCG_TYPE_I64)) { 1869 /* 1870 * X != 0 implies X + -1 generates a carry. 1871 * RT = (~X + X) + CA 1872 * = -1 + CA 1873 * = CA ? 0 : -1 1874 */ 1875 tcg_out32(s, ADDIC | TAI(TCG_REG_R0, src, -1)); 1876 tcg_out32(s, SUBFE | TAB(dst, src, src)); 1877 return; 1878 } 1879 1880 if (type == TCG_TYPE_I32) { 1881 tcg_out32(s, CNTLZW | RS(src) | RA(dst)); 1882 tcg_out_shri32(s, dst, dst, 5); 1883 } else { 1884 tcg_out32(s, CNTLZD | RS(src) | RA(dst)); 1885 tcg_out_shri64(s, dst, dst, 6); 1886 } 1887 if (neg) { 1888 tcg_out32(s, NEG | RT(dst) | RA(dst)); 1889 } 1890} 1891 1892static void tcg_out_setcond_ne0(TCGContext *s, TCGType type, 1893 TCGReg dst, TCGReg src, bool neg) 1894{ 1895 if (!neg && (TCG_TARGET_REG_BITS == 32 || type == TCG_TYPE_I64)) { 1896 /* 1897 * X != 0 implies X + -1 generates a carry. Extra addition 1898 * trickery means: R = X-1 + ~X + C = X-1 + (-X+1) + C = C. 1899 */ 1900 tcg_out32(s, ADDIC | TAI(TCG_REG_R0, src, -1)); 1901 tcg_out32(s, SUBFE | TAB(dst, TCG_REG_R0, src)); 1902 return; 1903 } 1904 tcg_out_setcond_eq0(s, type, dst, src, false); 1905 if (neg) { 1906 tcg_out32(s, ADDI | TAI(dst, dst, -1)); 1907 } else { 1908 tcg_out_xori32(s, dst, dst, 1); 1909 } 1910} 1911 1912static TCGReg tcg_gen_setcond_xor(TCGContext *s, TCGReg arg1, TCGArg arg2, 1913 bool const_arg2) 1914{ 1915 if (const_arg2) { 1916 if ((uint32_t)arg2 == arg2) { 1917 tcg_out_xori32(s, TCG_REG_R0, arg1, arg2); 1918 } else { 1919 tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_R0, arg2); 1920 tcg_out32(s, XOR | SAB(arg1, TCG_REG_R0, TCG_REG_R0)); 1921 } 1922 } else { 1923 tcg_out32(s, XOR | SAB(arg1, TCG_REG_R0, arg2)); 1924 } 1925 return TCG_REG_R0; 1926} 1927 1928static void tcg_out_setcond(TCGContext *s, TCGType type, TCGCond cond, 1929 TCGArg arg0, TCGArg arg1, TCGArg arg2, 1930 int const_arg2, bool neg) 1931{ 1932 int sh; 1933 bool inv; 1934 1935 tcg_debug_assert(TCG_TARGET_REG_BITS == 64 || type == TCG_TYPE_I32); 1936 1937 /* Ignore high bits of a potential constant arg2. */ 1938 if (type == TCG_TYPE_I32) { 1939 arg2 = (uint32_t)arg2; 1940 } 1941 1942 /* With SETBC/SETBCR, we can always implement with 2 insns. */ 1943 if (have_isa_3_10) { 1944 tcg_insn_unit bi, opc; 1945 1946 tcg_out_cmp(s, cond, arg1, arg2, const_arg2, 0, type); 1947 1948 /* Re-use tcg_to_bc for BI and BO_COND_{TRUE,FALSE}. */ 1949 bi = tcg_to_bc[cond] & (0x1f << 16); 1950 if (tcg_to_bc[cond] & BO(8)) { 1951 opc = neg ? SETNBC : SETBC; 1952 } else { 1953 opc = neg ? SETNBCR : SETBCR; 1954 } 1955 tcg_out32(s, opc | RT(arg0) | bi); 1956 return; 1957 } 1958 1959 /* Handle common and trivial cases before handling anything else. */ 1960 if (arg2 == 0) { 1961 switch (cond) { 1962 case TCG_COND_EQ: 1963 tcg_out_setcond_eq0(s, type, arg0, arg1, neg); 1964 return; 1965 case TCG_COND_NE: 1966 tcg_out_setcond_ne0(s, type, arg0, arg1, neg); 1967 return; 1968 case TCG_COND_GE: 1969 tcg_out32(s, NOR | SAB(arg1, arg0, arg1)); 1970 arg1 = arg0; 1971 /* FALLTHRU */ 1972 case TCG_COND_LT: 1973 /* Extract the sign bit. */ 1974 if (type == TCG_TYPE_I32) { 1975 if (neg) { 1976 tcg_out_sari32(s, arg0, arg1, 31); 1977 } else { 1978 tcg_out_shri32(s, arg0, arg1, 31); 1979 } 1980 } else { 1981 if (neg) { 1982 tcg_out_sari64(s, arg0, arg1, 63); 1983 } else { 1984 tcg_out_shri64(s, arg0, arg1, 63); 1985 } 1986 } 1987 return; 1988 default: 1989 break; 1990 } 1991 } 1992 1993 /* If we have ISEL, we can implement everything with 3 or 4 insns. 1994 All other cases below are also at least 3 insns, so speed up the 1995 code generator by not considering them and always using ISEL. */ 1996 if (have_isel) { 1997 int isel, tab; 1998 1999 tcg_out_cmp(s, cond, arg1, arg2, const_arg2, 0, type); 2000 2001 isel = tcg_to_isel[cond]; 2002 2003 tcg_out_movi(s, type, arg0, neg ? -1 : 1); 2004 if (isel & 1) { 2005 /* arg0 = (bc ? 0 : 1) */ 2006 tab = TAB(arg0, 0, arg0); 2007 isel &= ~1; 2008 } else { 2009 /* arg0 = (bc ? 1 : 0) */ 2010 tcg_out_movi(s, type, TCG_REG_R0, 0); 2011 tab = TAB(arg0, arg0, TCG_REG_R0); 2012 } 2013 tcg_out32(s, isel | tab); 2014 return; 2015 } 2016 2017 inv = false; 2018 switch (cond) { 2019 case TCG_COND_EQ: 2020 arg1 = tcg_gen_setcond_xor(s, arg1, arg2, const_arg2); 2021 tcg_out_setcond_eq0(s, type, arg0, arg1, neg); 2022 break; 2023 2024 case TCG_COND_NE: 2025 arg1 = tcg_gen_setcond_xor(s, arg1, arg2, const_arg2); 2026 tcg_out_setcond_ne0(s, type, arg0, arg1, neg); 2027 break; 2028 2029 case TCG_COND_TSTEQ: 2030 tcg_out_test(s, TCG_REG_R0, arg1, arg2, const_arg2, type, false); 2031 tcg_out_setcond_eq0(s, type, arg0, TCG_REG_R0, neg); 2032 break; 2033 2034 case TCG_COND_TSTNE: 2035 tcg_out_test(s, TCG_REG_R0, arg1, arg2, const_arg2, type, false); 2036 tcg_out_setcond_ne0(s, type, arg0, TCG_REG_R0, neg); 2037 break; 2038 2039 case TCG_COND_LE: 2040 case TCG_COND_LEU: 2041 inv = true; 2042 /* fall through */ 2043 case TCG_COND_GT: 2044 case TCG_COND_GTU: 2045 sh = 30; /* CR7 CR_GT */ 2046 goto crtest; 2047 2048 case TCG_COND_GE: 2049 case TCG_COND_GEU: 2050 inv = true; 2051 /* fall through */ 2052 case TCG_COND_LT: 2053 case TCG_COND_LTU: 2054 sh = 29; /* CR7 CR_LT */ 2055 goto crtest; 2056 2057 crtest: 2058 tcg_out_cmp(s, cond, arg1, arg2, const_arg2, 7, type); 2059 tcg_out32(s, MFOCRF | RT(TCG_REG_R0) | FXM(7)); 2060 tcg_out_rlw(s, RLWINM, arg0, TCG_REG_R0, sh, 31, 31); 2061 if (neg && inv) { 2062 tcg_out32(s, ADDI | TAI(arg0, arg0, -1)); 2063 } else if (neg) { 2064 tcg_out32(s, NEG | RT(arg0) | RA(arg0)); 2065 } else if (inv) { 2066 tcg_out_xori32(s, arg0, arg0, 1); 2067 } 2068 break; 2069 2070 default: 2071 g_assert_not_reached(); 2072 } 2073} 2074 2075static void tcg_out_bc(TCGContext *s, TCGCond cond, int bd) 2076{ 2077 tcg_out32(s, tcg_to_bc[cond] | bd); 2078} 2079 2080static void tcg_out_bc_lab(TCGContext *s, TCGCond cond, TCGLabel *l) 2081{ 2082 int bd = 0; 2083 if (l->has_value) { 2084 bd = reloc_pc14_val(tcg_splitwx_to_rx(s->code_ptr), l->u.value_ptr); 2085 } else { 2086 tcg_out_reloc(s, s->code_ptr, R_PPC_REL14, l, 0); 2087 } 2088 tcg_out_bc(s, cond, bd); 2089} 2090 2091static void tcg_out_brcond(TCGContext *s, TCGCond cond, 2092 TCGArg arg1, TCGArg arg2, int const_arg2, 2093 TCGLabel *l, TCGType type) 2094{ 2095 tcg_out_cmp(s, cond, arg1, arg2, const_arg2, 0, type); 2096 tcg_out_bc_lab(s, cond, l); 2097} 2098 2099static void tcg_out_movcond(TCGContext *s, TCGType type, TCGCond cond, 2100 TCGArg dest, TCGArg c1, TCGArg c2, TCGArg v1, 2101 TCGArg v2, bool const_c2) 2102{ 2103 /* If for some reason both inputs are zero, don't produce bad code. */ 2104 if (v1 == 0 && v2 == 0) { 2105 tcg_out_movi(s, type, dest, 0); 2106 return; 2107 } 2108 2109 tcg_out_cmp(s, cond, c1, c2, const_c2, 0, type); 2110 2111 if (have_isel) { 2112 int isel = tcg_to_isel[cond]; 2113 2114 /* Swap the V operands if the operation indicates inversion. */ 2115 if (isel & 1) { 2116 int t = v1; 2117 v1 = v2; 2118 v2 = t; 2119 isel &= ~1; 2120 } 2121 /* V1 == 0 is handled by isel; V2 == 0 must be handled by hand. */ 2122 if (v2 == 0) { 2123 tcg_out_movi(s, type, TCG_REG_R0, 0); 2124 } 2125 tcg_out32(s, isel | TAB(dest, v1, v2)); 2126 } else { 2127 if (dest == v2) { 2128 cond = tcg_invert_cond(cond); 2129 v2 = v1; 2130 } else if (dest != v1) { 2131 if (v1 == 0) { 2132 tcg_out_movi(s, type, dest, 0); 2133 } else { 2134 tcg_out_mov(s, type, dest, v1); 2135 } 2136 } 2137 /* Branch forward over one insn */ 2138 tcg_out_bc(s, cond, 8); 2139 if (v2 == 0) { 2140 tcg_out_movi(s, type, dest, 0); 2141 } else { 2142 tcg_out_mov(s, type, dest, v2); 2143 } 2144 } 2145} 2146 2147static void tcg_out_cntxz(TCGContext *s, TCGType type, uint32_t opc, 2148 TCGArg a0, TCGArg a1, TCGArg a2, bool const_a2) 2149{ 2150 if (const_a2 && a2 == (type == TCG_TYPE_I32 ? 32 : 64)) { 2151 tcg_out32(s, opc | RA(a0) | RS(a1)); 2152 } else { 2153 tcg_out_cmp(s, TCG_COND_EQ, a1, 0, 1, 0, type); 2154 /* Note that the only other valid constant for a2 is 0. */ 2155 if (have_isel) { 2156 tcg_out32(s, opc | RA(TCG_REG_R0) | RS(a1)); 2157 tcg_out32(s, tcg_to_isel[TCG_COND_EQ] | TAB(a0, a2, TCG_REG_R0)); 2158 } else if (!const_a2 && a0 == a2) { 2159 tcg_out_bc(s, TCG_COND_EQ, 8); 2160 tcg_out32(s, opc | RA(a0) | RS(a1)); 2161 } else { 2162 tcg_out32(s, opc | RA(a0) | RS(a1)); 2163 tcg_out_bc(s, TCG_COND_NE, 8); 2164 if (const_a2) { 2165 tcg_out_movi(s, type, a0, 0); 2166 } else { 2167 tcg_out_mov(s, type, a0, a2); 2168 } 2169 } 2170 } 2171} 2172 2173static void tcg_out_cmp2(TCGContext *s, const TCGArg *args, 2174 const int *const_args) 2175{ 2176 static const struct { uint8_t bit1, bit2; } bits[] = { 2177 [TCG_COND_LT ] = { CR_LT, CR_LT }, 2178 [TCG_COND_LE ] = { CR_LT, CR_GT }, 2179 [TCG_COND_GT ] = { CR_GT, CR_GT }, 2180 [TCG_COND_GE ] = { CR_GT, CR_LT }, 2181 [TCG_COND_LTU] = { CR_LT, CR_LT }, 2182 [TCG_COND_LEU] = { CR_LT, CR_GT }, 2183 [TCG_COND_GTU] = { CR_GT, CR_GT }, 2184 [TCG_COND_GEU] = { CR_GT, CR_LT }, 2185 }; 2186 2187 TCGCond cond = args[4], cond2; 2188 TCGArg al, ah, bl, bh; 2189 int blconst, bhconst; 2190 int op, bit1, bit2; 2191 2192 al = args[0]; 2193 ah = args[1]; 2194 bl = args[2]; 2195 bh = args[3]; 2196 blconst = const_args[2]; 2197 bhconst = const_args[3]; 2198 2199 switch (cond) { 2200 case TCG_COND_EQ: 2201 op = CRAND; 2202 goto do_equality; 2203 case TCG_COND_NE: 2204 op = CRNAND; 2205 do_equality: 2206 tcg_out_cmp(s, cond, al, bl, blconst, 6, TCG_TYPE_I32); 2207 tcg_out_cmp(s, cond, ah, bh, bhconst, 7, TCG_TYPE_I32); 2208 tcg_out32(s, op | BT(0, CR_EQ) | BA(6, CR_EQ) | BB(7, CR_EQ)); 2209 break; 2210 2211 case TCG_COND_TSTEQ: 2212 case TCG_COND_TSTNE: 2213 if (blconst) { 2214 tcg_out_andi32(s, TCG_REG_R0, al, bl); 2215 } else { 2216 tcg_out32(s, AND | SAB(al, TCG_REG_R0, bl)); 2217 } 2218 if (bhconst) { 2219 tcg_out_andi32(s, TCG_REG_TMP1, ah, bh); 2220 } else { 2221 tcg_out32(s, AND | SAB(ah, TCG_REG_TMP1, bh)); 2222 } 2223 tcg_out32(s, OR | SAB(TCG_REG_R0, TCG_REG_R0, TCG_REG_TMP1) | 1); 2224 break; 2225 2226 case TCG_COND_LT: 2227 case TCG_COND_LE: 2228 case TCG_COND_GT: 2229 case TCG_COND_GE: 2230 case TCG_COND_LTU: 2231 case TCG_COND_LEU: 2232 case TCG_COND_GTU: 2233 case TCG_COND_GEU: 2234 bit1 = bits[cond].bit1; 2235 bit2 = bits[cond].bit2; 2236 op = (bit1 != bit2 ? CRANDC : CRAND); 2237 cond2 = tcg_unsigned_cond(cond); 2238 2239 tcg_out_cmp(s, cond, ah, bh, bhconst, 6, TCG_TYPE_I32); 2240 tcg_out_cmp(s, cond2, al, bl, blconst, 7, TCG_TYPE_I32); 2241 tcg_out32(s, op | BT(0, CR_EQ) | BA(6, CR_EQ) | BB(7, bit2)); 2242 tcg_out32(s, CROR | BT(0, CR_EQ) | BA(6, bit1) | BB(0, CR_EQ)); 2243 break; 2244 2245 default: 2246 g_assert_not_reached(); 2247 } 2248} 2249 2250static void tcg_out_setcond2(TCGContext *s, const TCGArg *args, 2251 const int *const_args) 2252{ 2253 tcg_out_cmp2(s, args + 1, const_args + 1); 2254 tcg_out32(s, MFOCRF | RT(TCG_REG_R0) | FXM(0)); 2255 tcg_out_rlw(s, RLWINM, args[0], TCG_REG_R0, CR_EQ + 0*4 + 1, 31, 31); 2256} 2257 2258static void tcg_out_brcond2(TCGContext *s, const TCGArg *args, 2259 const int *const_args) 2260{ 2261 tcg_out_cmp2(s, args, const_args); 2262 tcg_out_bc_lab(s, TCG_COND_EQ, arg_label(args[5])); 2263} 2264 2265static void tcg_out_mb(TCGContext *s, TCGArg a0) 2266{ 2267 uint32_t insn; 2268 2269 if (a0 & TCG_MO_ST_LD) { 2270 insn = HWSYNC; 2271 } else { 2272 insn = LWSYNC; 2273 } 2274 2275 tcg_out32(s, insn); 2276} 2277 2278static void tcg_out_call_int(TCGContext *s, int lk, 2279 const tcg_insn_unit *target) 2280{ 2281#ifdef _CALL_AIX 2282 /* Look through the descriptor. If the branch is in range, and we 2283 don't have to spend too much effort on building the toc. */ 2284 const void *tgt = ((const void * const *)target)[0]; 2285 uintptr_t toc = ((const uintptr_t *)target)[1]; 2286 intptr_t diff = tcg_pcrel_diff(s, tgt); 2287 2288 if (in_range_b(diff) && toc == (uint32_t)toc) { 2289 tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP1, toc); 2290 tcg_out_b(s, lk, tgt); 2291 } else { 2292 /* Fold the low bits of the constant into the addresses below. */ 2293 intptr_t arg = (intptr_t)target; 2294 int ofs = (int16_t)arg; 2295 2296 if (ofs + 8 < 0x8000) { 2297 arg -= ofs; 2298 } else { 2299 ofs = 0; 2300 } 2301 tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP1, arg); 2302 tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_R0, TCG_REG_TMP1, ofs); 2303 tcg_out32(s, MTSPR | RA(TCG_REG_R0) | CTR); 2304 tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_R2, TCG_REG_TMP1, ofs + SZP); 2305 tcg_out32(s, BCCTR | BO_ALWAYS | lk); 2306 } 2307#elif defined(_CALL_ELF) && _CALL_ELF == 2 2308 intptr_t diff; 2309 2310 /* In the ELFv2 ABI, we have to set up r12 to contain the destination 2311 address, which the callee uses to compute its TOC address. */ 2312 /* FIXME: when the branch is in range, we could avoid r12 load if we 2313 knew that the destination uses the same TOC, and what its local 2314 entry point offset is. */ 2315 tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R12, (intptr_t)target); 2316 2317 diff = tcg_pcrel_diff(s, target); 2318 if (in_range_b(diff)) { 2319 tcg_out_b(s, lk, target); 2320 } else { 2321 tcg_out32(s, MTSPR | RS(TCG_REG_R12) | CTR); 2322 tcg_out32(s, BCCTR | BO_ALWAYS | lk); 2323 } 2324#else 2325 tcg_out_b(s, lk, target); 2326#endif 2327} 2328 2329static void tcg_out_call(TCGContext *s, const tcg_insn_unit *target, 2330 const TCGHelperInfo *info) 2331{ 2332 tcg_out_call_int(s, LK, target); 2333} 2334 2335static const uint32_t qemu_ldx_opc[(MO_SSIZE + MO_BSWAP) + 1] = { 2336 [MO_UB] = LBZX, 2337 [MO_UW] = LHZX, 2338 [MO_UL] = LWZX, 2339 [MO_UQ] = LDX, 2340 [MO_SW] = LHAX, 2341 [MO_SL] = LWAX, 2342 [MO_BSWAP | MO_UB] = LBZX, 2343 [MO_BSWAP | MO_UW] = LHBRX, 2344 [MO_BSWAP | MO_UL] = LWBRX, 2345 [MO_BSWAP | MO_UQ] = LDBRX, 2346}; 2347 2348static const uint32_t qemu_stx_opc[(MO_SIZE + MO_BSWAP) + 1] = { 2349 [MO_UB] = STBX, 2350 [MO_UW] = STHX, 2351 [MO_UL] = STWX, 2352 [MO_UQ] = STDX, 2353 [MO_BSWAP | MO_UB] = STBX, 2354 [MO_BSWAP | MO_UW] = STHBRX, 2355 [MO_BSWAP | MO_UL] = STWBRX, 2356 [MO_BSWAP | MO_UQ] = STDBRX, 2357}; 2358 2359static TCGReg ldst_ra_gen(TCGContext *s, const TCGLabelQemuLdst *l, int arg) 2360{ 2361 if (arg < 0) { 2362 arg = TCG_REG_TMP1; 2363 } 2364 tcg_out32(s, MFSPR | RT(arg) | LR); 2365 return arg; 2366} 2367 2368/* 2369 * For the purposes of ppc32 sorting 4 input registers into 4 argument 2370 * registers, there is an outside chance we would require 3 temps. 2371 */ 2372static const TCGLdstHelperParam ldst_helper_param = { 2373 .ra_gen = ldst_ra_gen, 2374 .ntmp = 3, 2375 .tmp = { TCG_REG_TMP1, TCG_REG_TMP2, TCG_REG_R0 } 2376}; 2377 2378static bool tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *lb) 2379{ 2380 MemOp opc = get_memop(lb->oi); 2381 2382 if (!reloc_pc14(lb->label_ptr[0], tcg_splitwx_to_rx(s->code_ptr))) { 2383 return false; 2384 } 2385 2386 tcg_out_ld_helper_args(s, lb, &ldst_helper_param); 2387 tcg_out_call_int(s, LK, qemu_ld_helpers[opc & MO_SIZE]); 2388 tcg_out_ld_helper_ret(s, lb, false, &ldst_helper_param); 2389 2390 tcg_out_b(s, 0, lb->raddr); 2391 return true; 2392} 2393 2394static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *lb) 2395{ 2396 MemOp opc = get_memop(lb->oi); 2397 2398 if (!reloc_pc14(lb->label_ptr[0], tcg_splitwx_to_rx(s->code_ptr))) { 2399 return false; 2400 } 2401 2402 tcg_out_st_helper_args(s, lb, &ldst_helper_param); 2403 tcg_out_call_int(s, LK, qemu_st_helpers[opc & MO_SIZE]); 2404 2405 tcg_out_b(s, 0, lb->raddr); 2406 return true; 2407} 2408 2409typedef struct { 2410 TCGReg base; 2411 TCGReg index; 2412 TCGAtomAlign aa; 2413} HostAddress; 2414 2415bool tcg_target_has_memory_bswap(MemOp memop) 2416{ 2417 TCGAtomAlign aa; 2418 2419 if ((memop & MO_SIZE) <= MO_64) { 2420 return true; 2421 } 2422 2423 /* 2424 * Reject 16-byte memop with 16-byte atomicity, 2425 * but do allow a pair of 64-bit operations. 2426 */ 2427 aa = atom_and_align_for_opc(tcg_ctx, memop, MO_ATOM_IFALIGN, true); 2428 return aa.atom <= MO_64; 2429} 2430 2431/* We expect to use a 16-bit negative offset from ENV. */ 2432#define MIN_TLB_MASK_TABLE_OFS -32768 2433 2434/* 2435 * For system-mode, perform the TLB load and compare. 2436 * For user-mode, perform any required alignment tests. 2437 * In both cases, return a TCGLabelQemuLdst structure if the slow path 2438 * is required and fill in @h with the host address for the fast path. 2439 */ 2440static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h, 2441 TCGReg addr, MemOpIdx oi, bool is_ld) 2442{ 2443 TCGType addr_type = s->addr_type; 2444 TCGLabelQemuLdst *ldst = NULL; 2445 MemOp opc = get_memop(oi); 2446 MemOp a_bits, s_bits; 2447 2448 /* 2449 * Book II, Section 1.4, Single-Copy Atomicity, specifies: 2450 * 2451 * Before 3.0, "An access that is not atomic is performed as a set of 2452 * smaller disjoint atomic accesses. In general, the number and alignment 2453 * of these accesses are implementation-dependent." Thus MO_ATOM_IFALIGN. 2454 * 2455 * As of 3.0, "the non-atomic access is performed as described in 2456 * the corresponding list", which matches MO_ATOM_SUBALIGN. 2457 */ 2458 s_bits = opc & MO_SIZE; 2459 h->aa = atom_and_align_for_opc(s, opc, 2460 have_isa_3_00 ? MO_ATOM_SUBALIGN 2461 : MO_ATOM_IFALIGN, 2462 s_bits == MO_128); 2463 a_bits = h->aa.align; 2464 2465 if (tcg_use_softmmu) { 2466 int mem_index = get_mmuidx(oi); 2467 int cmp_off = is_ld ? offsetof(CPUTLBEntry, addr_read) 2468 : offsetof(CPUTLBEntry, addr_write); 2469 int fast_off = tlb_mask_table_ofs(s, mem_index); 2470 int mask_off = fast_off + offsetof(CPUTLBDescFast, mask); 2471 int table_off = fast_off + offsetof(CPUTLBDescFast, table); 2472 2473 ldst = new_ldst_label(s); 2474 ldst->is_ld = is_ld; 2475 ldst->oi = oi; 2476 ldst->addr_reg = addr; 2477 2478 /* Load tlb_mask[mmu_idx] and tlb_table[mmu_idx]. */ 2479 tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_AREG0, mask_off); 2480 tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP2, TCG_AREG0, table_off); 2481 2482 /* Extract the page index, shifted into place for tlb index. */ 2483 if (TCG_TARGET_REG_BITS == 32) { 2484 tcg_out_shri32(s, TCG_REG_R0, addr, 2485 s->page_bits - CPU_TLB_ENTRY_BITS); 2486 } else { 2487 tcg_out_shri64(s, TCG_REG_R0, addr, 2488 s->page_bits - CPU_TLB_ENTRY_BITS); 2489 } 2490 tcg_out32(s, AND | SAB(TCG_REG_TMP1, TCG_REG_TMP1, TCG_REG_R0)); 2491 2492 /* 2493 * Load the TLB comparator into TMP2. 2494 * For 64-bit host, always load the entire 64-bit slot for simplicity. 2495 * We will ignore the high bits with tcg_out_cmp(..., addr_type). 2496 */ 2497 if (cmp_off == 0) { 2498 tcg_out32(s, (TCG_TARGET_REG_BITS == 64 ? LDUX : LWZUX) 2499 | TAB(TCG_REG_TMP2, TCG_REG_TMP1, TCG_REG_TMP2)); 2500 } else { 2501 tcg_out32(s, ADD | TAB(TCG_REG_TMP1, TCG_REG_TMP1, TCG_REG_TMP2)); 2502 tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP2, TCG_REG_TMP1, cmp_off); 2503 } 2504 2505 /* 2506 * Load the TLB addend for use on the fast path. 2507 * Do this asap to minimize any load use delay. 2508 */ 2509 if (TCG_TARGET_REG_BITS == 64 || addr_type == TCG_TYPE_I32) { 2510 tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_REG_TMP1, 2511 offsetof(CPUTLBEntry, addend)); 2512 } 2513 2514 /* Clear the non-page, non-alignment bits from the address in R0. */ 2515 if (TCG_TARGET_REG_BITS == 32) { 2516 /* 2517 * We don't support unaligned accesses on 32-bits. 2518 * Preserve the bottom bits and thus trigger a comparison 2519 * failure on unaligned accesses. 2520 */ 2521 if (a_bits < s_bits) { 2522 a_bits = s_bits; 2523 } 2524 tcg_out_rlw(s, RLWINM, TCG_REG_R0, addr, 0, 2525 (32 - a_bits) & 31, 31 - s->page_bits); 2526 } else { 2527 TCGReg t = addr; 2528 2529 /* 2530 * If the access is unaligned, we need to make sure we fail if we 2531 * cross a page boundary. The trick is to add the access size-1 2532 * to the address before masking the low bits. That will make the 2533 * address overflow to the next page if we cross a page boundary, 2534 * which will then force a mismatch of the TLB compare. 2535 */ 2536 if (a_bits < s_bits) { 2537 unsigned a_mask = (1 << a_bits) - 1; 2538 unsigned s_mask = (1 << s_bits) - 1; 2539 tcg_out32(s, ADDI | TAI(TCG_REG_R0, t, s_mask - a_mask)); 2540 t = TCG_REG_R0; 2541 } 2542 2543 /* Mask the address for the requested alignment. */ 2544 if (addr_type == TCG_TYPE_I32) { 2545 tcg_out_rlw(s, RLWINM, TCG_REG_R0, t, 0, 2546 (32 - a_bits) & 31, 31 - s->page_bits); 2547 } else if (a_bits == 0) { 2548 tcg_out_rld(s, RLDICR, TCG_REG_R0, t, 0, 63 - s->page_bits); 2549 } else { 2550 tcg_out_rld(s, RLDICL, TCG_REG_R0, t, 2551 64 - s->page_bits, s->page_bits - a_bits); 2552 tcg_out_rld(s, RLDICL, TCG_REG_R0, TCG_REG_R0, s->page_bits, 0); 2553 } 2554 } 2555 2556 /* Full comparison into cr0. */ 2557 tcg_out_cmp(s, TCG_COND_EQ, TCG_REG_R0, TCG_REG_TMP2, 0, 0, addr_type); 2558 2559 /* Load a pointer into the current opcode w/conditional branch-link. */ 2560 ldst->label_ptr[0] = s->code_ptr; 2561 tcg_out_bc(s, TCG_COND_NE, LK); 2562 2563 h->base = TCG_REG_TMP1; 2564 } else { 2565 if (a_bits) { 2566 ldst = new_ldst_label(s); 2567 ldst->is_ld = is_ld; 2568 ldst->oi = oi; 2569 ldst->addr_reg = addr; 2570 2571 /* We are expecting a_bits to max out at 7, much lower than ANDI. */ 2572 tcg_debug_assert(a_bits < 16); 2573 tcg_out32(s, ANDI | SAI(addr, TCG_REG_R0, (1 << a_bits) - 1)); 2574 2575 ldst->label_ptr[0] = s->code_ptr; 2576 tcg_out32(s, BC | BI(0, CR_EQ) | BO_COND_FALSE | LK); 2577 } 2578 2579 h->base = guest_base ? TCG_GUEST_BASE_REG : 0; 2580 } 2581 2582 if (TCG_TARGET_REG_BITS == 64 && addr_type == TCG_TYPE_I32) { 2583 /* Zero-extend the guest address for use in the host address. */ 2584 tcg_out_ext32u(s, TCG_REG_TMP2, addr); 2585 h->index = TCG_REG_TMP2; 2586 } else { 2587 h->index = addr; 2588 } 2589 2590 return ldst; 2591} 2592 2593static void tcg_out_qemu_ld(TCGContext *s, TCGReg datalo, TCGReg datahi, 2594 TCGReg addr, MemOpIdx oi, TCGType data_type) 2595{ 2596 MemOp opc = get_memop(oi); 2597 TCGLabelQemuLdst *ldst; 2598 HostAddress h; 2599 2600 ldst = prepare_host_addr(s, &h, addr, oi, true); 2601 2602 if (TCG_TARGET_REG_BITS == 32 && (opc & MO_SIZE) == MO_64) { 2603 if (opc & MO_BSWAP) { 2604 tcg_out32(s, ADDI | TAI(TCG_REG_R0, h.index, 4)); 2605 tcg_out32(s, LWBRX | TAB(datalo, h.base, h.index)); 2606 tcg_out32(s, LWBRX | TAB(datahi, h.base, TCG_REG_R0)); 2607 } else if (h.base != 0) { 2608 tcg_out32(s, ADDI | TAI(TCG_REG_R0, h.index, 4)); 2609 tcg_out32(s, LWZX | TAB(datahi, h.base, h.index)); 2610 tcg_out32(s, LWZX | TAB(datalo, h.base, TCG_REG_R0)); 2611 } else if (h.index == datahi) { 2612 tcg_out32(s, LWZ | TAI(datalo, h.index, 4)); 2613 tcg_out32(s, LWZ | TAI(datahi, h.index, 0)); 2614 } else { 2615 tcg_out32(s, LWZ | TAI(datahi, h.index, 0)); 2616 tcg_out32(s, LWZ | TAI(datalo, h.index, 4)); 2617 } 2618 } else { 2619 uint32_t insn = qemu_ldx_opc[opc & (MO_BSWAP | MO_SSIZE)]; 2620 if (!have_isa_2_06 && insn == LDBRX) { 2621 tcg_out32(s, ADDI | TAI(TCG_REG_R0, h.index, 4)); 2622 tcg_out32(s, LWBRX | TAB(datalo, h.base, h.index)); 2623 tcg_out32(s, LWBRX | TAB(TCG_REG_R0, h.base, TCG_REG_R0)); 2624 tcg_out_rld(s, RLDIMI, datalo, TCG_REG_R0, 32, 0); 2625 } else if (insn) { 2626 tcg_out32(s, insn | TAB(datalo, h.base, h.index)); 2627 } else { 2628 insn = qemu_ldx_opc[opc & (MO_SIZE | MO_BSWAP)]; 2629 tcg_out32(s, insn | TAB(datalo, h.base, h.index)); 2630 tcg_out_movext(s, TCG_TYPE_REG, datalo, 2631 TCG_TYPE_REG, opc & MO_SSIZE, datalo); 2632 } 2633 } 2634 2635 if (ldst) { 2636 ldst->type = data_type; 2637 ldst->datalo_reg = datalo; 2638 ldst->datahi_reg = datahi; 2639 ldst->raddr = tcg_splitwx_to_rx(s->code_ptr); 2640 } 2641} 2642 2643static void tcg_out_qemu_st(TCGContext *s, TCGReg datalo, TCGReg datahi, 2644 TCGReg addr, MemOpIdx oi, TCGType data_type) 2645{ 2646 MemOp opc = get_memop(oi); 2647 TCGLabelQemuLdst *ldst; 2648 HostAddress h; 2649 2650 ldst = prepare_host_addr(s, &h, addr, oi, false); 2651 2652 if (TCG_TARGET_REG_BITS == 32 && (opc & MO_SIZE) == MO_64) { 2653 if (opc & MO_BSWAP) { 2654 tcg_out32(s, ADDI | TAI(TCG_REG_R0, h.index, 4)); 2655 tcg_out32(s, STWBRX | SAB(datalo, h.base, h.index)); 2656 tcg_out32(s, STWBRX | SAB(datahi, h.base, TCG_REG_R0)); 2657 } else if (h.base != 0) { 2658 tcg_out32(s, ADDI | TAI(TCG_REG_R0, h.index, 4)); 2659 tcg_out32(s, STWX | SAB(datahi, h.base, h.index)); 2660 tcg_out32(s, STWX | SAB(datalo, h.base, TCG_REG_R0)); 2661 } else { 2662 tcg_out32(s, STW | TAI(datahi, h.index, 0)); 2663 tcg_out32(s, STW | TAI(datalo, h.index, 4)); 2664 } 2665 } else { 2666 uint32_t insn = qemu_stx_opc[opc & (MO_BSWAP | MO_SIZE)]; 2667 if (!have_isa_2_06 && insn == STDBRX) { 2668 tcg_out32(s, STWBRX | SAB(datalo, h.base, h.index)); 2669 tcg_out32(s, ADDI | TAI(TCG_REG_TMP2, h.index, 4)); 2670 tcg_out_shri64(s, TCG_REG_R0, datalo, 32); 2671 tcg_out32(s, STWBRX | SAB(TCG_REG_R0, h.base, TCG_REG_TMP2)); 2672 } else { 2673 tcg_out32(s, insn | SAB(datalo, h.base, h.index)); 2674 } 2675 } 2676 2677 if (ldst) { 2678 ldst->type = data_type; 2679 ldst->datalo_reg = datalo; 2680 ldst->datahi_reg = datahi; 2681 ldst->raddr = tcg_splitwx_to_rx(s->code_ptr); 2682 } 2683} 2684 2685static void tcg_out_qemu_ldst_i128(TCGContext *s, TCGReg datalo, TCGReg datahi, 2686 TCGReg addr_reg, MemOpIdx oi, bool is_ld) 2687{ 2688 TCGLabelQemuLdst *ldst; 2689 HostAddress h; 2690 bool need_bswap; 2691 uint32_t insn; 2692 TCGReg index; 2693 2694 ldst = prepare_host_addr(s, &h, addr_reg, oi, is_ld); 2695 2696 /* Compose the final address, as LQ/STQ have no indexing. */ 2697 index = h.index; 2698 if (h.base != 0) { 2699 index = TCG_REG_TMP1; 2700 tcg_out32(s, ADD | TAB(index, h.base, h.index)); 2701 } 2702 need_bswap = get_memop(oi) & MO_BSWAP; 2703 2704 if (h.aa.atom == MO_128) { 2705 tcg_debug_assert(!need_bswap); 2706 tcg_debug_assert(datalo & 1); 2707 tcg_debug_assert(datahi == datalo - 1); 2708 tcg_debug_assert(!is_ld || datahi != index); 2709 insn = is_ld ? LQ : STQ; 2710 tcg_out32(s, insn | TAI(datahi, index, 0)); 2711 } else { 2712 TCGReg d1, d2; 2713 2714 if (HOST_BIG_ENDIAN ^ need_bswap) { 2715 d1 = datahi, d2 = datalo; 2716 } else { 2717 d1 = datalo, d2 = datahi; 2718 } 2719 2720 if (need_bswap) { 2721 tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R0, 8); 2722 insn = is_ld ? LDBRX : STDBRX; 2723 tcg_out32(s, insn | TAB(d1, 0, index)); 2724 tcg_out32(s, insn | TAB(d2, index, TCG_REG_R0)); 2725 } else { 2726 insn = is_ld ? LD : STD; 2727 tcg_out32(s, insn | TAI(d1, index, 0)); 2728 tcg_out32(s, insn | TAI(d2, index, 8)); 2729 } 2730 } 2731 2732 if (ldst) { 2733 ldst->type = TCG_TYPE_I128; 2734 ldst->datalo_reg = datalo; 2735 ldst->datahi_reg = datahi; 2736 ldst->raddr = tcg_splitwx_to_rx(s->code_ptr); 2737 } 2738} 2739 2740static void tcg_out_nop_fill(tcg_insn_unit *p, int count) 2741{ 2742 int i; 2743 for (i = 0; i < count; ++i) { 2744 p[i] = NOP; 2745 } 2746} 2747 2748/* Parameters for function call generation, used in tcg.c. */ 2749#define TCG_TARGET_STACK_ALIGN 16 2750 2751#ifdef _CALL_AIX 2752# define LINK_AREA_SIZE (6 * SZR) 2753# define LR_OFFSET (1 * SZR) 2754# define TCG_TARGET_CALL_STACK_OFFSET (LINK_AREA_SIZE + 8 * SZR) 2755#elif defined(_CALL_DARWIN) 2756# define LINK_AREA_SIZE (6 * SZR) 2757# define LR_OFFSET (2 * SZR) 2758#elif TCG_TARGET_REG_BITS == 64 2759# if defined(_CALL_ELF) && _CALL_ELF == 2 2760# define LINK_AREA_SIZE (4 * SZR) 2761# define LR_OFFSET (1 * SZR) 2762# endif 2763#else /* TCG_TARGET_REG_BITS == 32 */ 2764# if defined(_CALL_SYSV) 2765# define LINK_AREA_SIZE (2 * SZR) 2766# define LR_OFFSET (1 * SZR) 2767# endif 2768#endif 2769#ifndef LR_OFFSET 2770# error "Unhandled abi" 2771#endif 2772#ifndef TCG_TARGET_CALL_STACK_OFFSET 2773# define TCG_TARGET_CALL_STACK_OFFSET LINK_AREA_SIZE 2774#endif 2775 2776#define CPU_TEMP_BUF_SIZE (CPU_TEMP_BUF_NLONGS * (int)sizeof(long)) 2777#define REG_SAVE_SIZE ((int)ARRAY_SIZE(tcg_target_callee_save_regs) * SZR) 2778 2779#define FRAME_SIZE ((TCG_TARGET_CALL_STACK_OFFSET \ 2780 + TCG_STATIC_CALL_ARGS_SIZE \ 2781 + CPU_TEMP_BUF_SIZE \ 2782 + REG_SAVE_SIZE \ 2783 + TCG_TARGET_STACK_ALIGN - 1) \ 2784 & -TCG_TARGET_STACK_ALIGN) 2785 2786#define REG_SAVE_BOT (FRAME_SIZE - REG_SAVE_SIZE) 2787 2788static void tcg_target_qemu_prologue(TCGContext *s) 2789{ 2790 int i; 2791 2792#ifdef _CALL_AIX 2793 const void **desc = (const void **)s->code_ptr; 2794 desc[0] = tcg_splitwx_to_rx(desc + 2); /* entry point */ 2795 desc[1] = 0; /* environment pointer */ 2796 s->code_ptr = (void *)(desc + 2); /* skip over descriptor */ 2797#endif 2798 2799 tcg_set_frame(s, TCG_REG_CALL_STACK, REG_SAVE_BOT - CPU_TEMP_BUF_SIZE, 2800 CPU_TEMP_BUF_SIZE); 2801 2802 /* Prologue */ 2803 tcg_out32(s, MFSPR | RT(TCG_REG_R0) | LR); 2804 tcg_out32(s, (SZR == 8 ? STDU : STWU) 2805 | SAI(TCG_REG_R1, TCG_REG_R1, -FRAME_SIZE)); 2806 2807 for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); ++i) { 2808 tcg_out_st(s, TCG_TYPE_REG, tcg_target_callee_save_regs[i], 2809 TCG_REG_R1, REG_SAVE_BOT + i * SZR); 2810 } 2811 tcg_out_st(s, TCG_TYPE_PTR, TCG_REG_R0, TCG_REG_R1, FRAME_SIZE+LR_OFFSET); 2812 2813 if (!tcg_use_softmmu && guest_base) { 2814 tcg_out_movi_int(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, guest_base, true); 2815 tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG); 2816 } 2817 2818 tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]); 2819 tcg_out32(s, MTSPR | RS(tcg_target_call_iarg_regs[1]) | CTR); 2820 tcg_out32(s, BCCTR | BO_ALWAYS); 2821 2822 /* Epilogue */ 2823 tcg_code_gen_epilogue = tcg_splitwx_to_rx(s->code_ptr); 2824 2825 tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_R0, TCG_REG_R1, FRAME_SIZE+LR_OFFSET); 2826 for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); ++i) { 2827 tcg_out_ld(s, TCG_TYPE_REG, tcg_target_callee_save_regs[i], 2828 TCG_REG_R1, REG_SAVE_BOT + i * SZR); 2829 } 2830 tcg_out32(s, MTSPR | RS(TCG_REG_R0) | LR); 2831 tcg_out32(s, ADDI | TAI(TCG_REG_R1, TCG_REG_R1, FRAME_SIZE)); 2832 tcg_out32(s, BCLR | BO_ALWAYS); 2833} 2834 2835static void tcg_out_tb_start(TCGContext *s) 2836{ 2837 /* Load TCG_REG_TB. */ 2838 if (USE_REG_TB) { 2839 if (have_isa_3_00) { 2840 /* lnia REG_TB */ 2841 tcg_out_addpcis(s, TCG_REG_TB, 0); 2842 } else { 2843 /* bcl 20,31,$+4 (preferred form for getting nia) */ 2844 tcg_out32(s, BC | BO_ALWAYS | BI(7, CR_SO) | 0x4 | LK); 2845 tcg_out32(s, MFSPR | RT(TCG_REG_TB) | LR); 2846 } 2847 } 2848} 2849 2850static void tcg_out_exit_tb(TCGContext *s, uintptr_t arg) 2851{ 2852 tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R3, arg); 2853 tcg_out_b(s, 0, tcg_code_gen_epilogue); 2854} 2855 2856static void tcg_out_goto_tb(TCGContext *s, int which) 2857{ 2858 uintptr_t ptr = get_jmp_target_addr(s, which); 2859 int16_t lo; 2860 2861 /* Direct branch will be patched by tb_target_set_jmp_target. */ 2862 set_jmp_insn_offset(s, which); 2863 tcg_out32(s, NOP); 2864 2865 /* When branch is out of range, fall through to indirect. */ 2866 if (USE_REG_TB) { 2867 ptrdiff_t offset = ppc_tbrel_diff(s, (void *)ptr); 2868 tcg_out_mem_long(s, LD, LDX, TCG_REG_TMP1, TCG_REG_TB, offset); 2869 } else if (have_isa_3_10) { 2870 ptrdiff_t offset = tcg_pcrel_diff_for_prefix(s, (void *)ptr); 2871 tcg_out_8ls_d(s, PLD, TCG_REG_TMP1, 0, offset, 1); 2872 } else if (have_isa_3_00) { 2873 ptrdiff_t offset = tcg_pcrel_diff(s, (void *)ptr) - 4; 2874 lo = offset; 2875 tcg_out_addpcis(s, TCG_REG_TMP1, offset - lo); 2876 tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_REG_TMP1, lo); 2877 } else { 2878 lo = ptr; 2879 tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP1, ptr - lo); 2880 tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_REG_TMP1, lo); 2881 } 2882 2883 tcg_out32(s, MTSPR | RS(TCG_REG_TMP1) | CTR); 2884 tcg_out32(s, BCCTR | BO_ALWAYS); 2885 set_jmp_reset_offset(s, which); 2886} 2887 2888void tb_target_set_jmp_target(const TranslationBlock *tb, int n, 2889 uintptr_t jmp_rx, uintptr_t jmp_rw) 2890{ 2891 uintptr_t addr = tb->jmp_target_addr[n]; 2892 intptr_t diff = addr - jmp_rx; 2893 tcg_insn_unit insn; 2894 2895 if (in_range_b(diff)) { 2896 insn = B | (diff & 0x3fffffc); 2897 } else { 2898 insn = NOP; 2899 } 2900 2901 qatomic_set((uint32_t *)jmp_rw, insn); 2902 flush_idcache_range(jmp_rx, jmp_rw, 4); 2903} 2904 2905 2906static void tgen_add(TCGContext *s, TCGType type, 2907 TCGReg a0, TCGReg a1, TCGReg a2) 2908{ 2909 tcg_out32(s, ADD | TAB(a0, a1, a2)); 2910} 2911 2912static void tgen_addi(TCGContext *s, TCGType type, 2913 TCGReg a0, TCGReg a1, tcg_target_long a2) 2914{ 2915 tcg_out_mem_long(s, ADDI, ADD, a0, a1, a2); 2916} 2917 2918static const TCGOutOpBinary outop_add = { 2919 .base.static_constraint = C_O1_I2(r, r, rT), 2920 .out_rrr = tgen_add, 2921 .out_rri = tgen_addi, 2922}; 2923 2924static void tgen_and(TCGContext *s, TCGType type, 2925 TCGReg a0, TCGReg a1, TCGReg a2) 2926{ 2927 tcg_out32(s, AND | SAB(a1, a0, a2)); 2928} 2929 2930static void tgen_andi(TCGContext *s, TCGType type, 2931 TCGReg a0, TCGReg a1, tcg_target_long a2) 2932{ 2933 if (type == TCG_TYPE_I32) { 2934 tcg_out_andi32(s, a0, a1, a2); 2935 } else { 2936 tcg_out_andi64(s, a0, a1, a2); 2937 } 2938} 2939 2940static const TCGOutOpBinary outop_and = { 2941 .base.static_constraint = C_O1_I2(r, r, ri), 2942 .out_rrr = tgen_and, 2943 .out_rri = tgen_andi, 2944}; 2945 2946static void tgen_andc(TCGContext *s, TCGType type, 2947 TCGReg a0, TCGReg a1, TCGReg a2) 2948{ 2949 tcg_out32(s, ANDC | SAB(a1, a0, a2)); 2950} 2951 2952static const TCGOutOpBinary outop_andc = { 2953 .base.static_constraint = C_O1_I2(r, r, r), 2954 .out_rrr = tgen_andc, 2955}; 2956 2957static void tgen_eqv(TCGContext *s, TCGType type, 2958 TCGReg a0, TCGReg a1, TCGReg a2) 2959{ 2960 tcg_out32(s, EQV | SAB(a1, a0, a2)); 2961} 2962 2963static const TCGOutOpBinary outop_eqv = { 2964 .base.static_constraint = C_O1_I2(r, r, r), 2965 .out_rrr = tgen_eqv, 2966}; 2967 2968static void tgen_nand(TCGContext *s, TCGType type, 2969 TCGReg a0, TCGReg a1, TCGReg a2) 2970{ 2971 tcg_out32(s, NAND | SAB(a1, a0, a2)); 2972} 2973 2974static const TCGOutOpBinary outop_nand = { 2975 .base.static_constraint = C_O1_I2(r, r, r), 2976 .out_rrr = tgen_nand, 2977}; 2978 2979static void tgen_nor(TCGContext *s, TCGType type, 2980 TCGReg a0, TCGReg a1, TCGReg a2) 2981{ 2982 tcg_out32(s, NOR | SAB(a1, a0, a2)); 2983} 2984 2985static const TCGOutOpBinary outop_nor = { 2986 .base.static_constraint = C_O1_I2(r, r, r), 2987 .out_rrr = tgen_nor, 2988}; 2989 2990static void tgen_or(TCGContext *s, TCGType type, 2991 TCGReg a0, TCGReg a1, TCGReg a2) 2992{ 2993 tcg_out32(s, OR | SAB(a1, a0, a2)); 2994} 2995 2996static void tgen_ori(TCGContext *s, TCGType type, 2997 TCGReg a0, TCGReg a1, tcg_target_long a2) 2998{ 2999 tcg_out_ori32(s, a0, a1, a2); 3000} 3001 3002static const TCGOutOpBinary outop_or = { 3003 .base.static_constraint = C_O1_I2(r, r, rU), 3004 .out_rrr = tgen_or, 3005 .out_rri = tgen_ori, 3006}; 3007 3008static void tgen_orc(TCGContext *s, TCGType type, 3009 TCGReg a0, TCGReg a1, TCGReg a2) 3010{ 3011 tcg_out32(s, ORC | SAB(a1, a0, a2)); 3012} 3013 3014static const TCGOutOpBinary outop_orc = { 3015 .base.static_constraint = C_O1_I2(r, r, r), 3016 .out_rrr = tgen_orc, 3017}; 3018 3019static void tgen_sub(TCGContext *s, TCGType type, 3020 TCGReg a0, TCGReg a1, TCGReg a2) 3021{ 3022 tcg_out32(s, SUBF | TAB(a0, a2, a1)); 3023} 3024 3025static void tgen_subfi(TCGContext *s, TCGType type, 3026 TCGReg a0, tcg_target_long a1, TCGReg a2) 3027{ 3028 tcg_out32(s, SUBFIC | TAI(a0, a2, a1)); 3029} 3030 3031static const TCGOutOpSubtract outop_sub = { 3032 .base.static_constraint = C_O1_I2(r, rI, r), 3033 .out_rrr = tgen_sub, 3034 .out_rir = tgen_subfi, 3035}; 3036 3037static void tgen_xor(TCGContext *s, TCGType type, 3038 TCGReg a0, TCGReg a1, TCGReg a2) 3039{ 3040 tcg_out32(s, XOR | SAB(a1, a0, a2)); 3041} 3042 3043static void tgen_xori(TCGContext *s, TCGType type, 3044 TCGReg a0, TCGReg a1, tcg_target_long a2) 3045{ 3046 tcg_out_xori32(s, a0, a1, a2); 3047} 3048 3049static const TCGOutOpBinary outop_xor = { 3050 .base.static_constraint = C_O1_I2(r, r, rU), 3051 .out_rrr = tgen_xor, 3052 .out_rri = tgen_xori, 3053}; 3054 3055static void tgen_neg(TCGContext *s, TCGType type, TCGReg a0, TCGReg a1) 3056{ 3057 tcg_out32(s, NEG | RT(a0) | RA(a1)); 3058} 3059 3060static const TCGOutOpUnary outop_neg = { 3061 .base.static_constraint = C_O1_I1(r, r), 3062 .out_rr = tgen_neg, 3063}; 3064 3065 3066static void tcg_out_op(TCGContext *s, TCGOpcode opc, TCGType type, 3067 const TCGArg args[TCG_MAX_OP_ARGS], 3068 const int const_args[TCG_MAX_OP_ARGS]) 3069{ 3070 TCGArg a0, a1, a2; 3071 3072 switch (opc) { 3073 case INDEX_op_goto_ptr: 3074 tcg_out32(s, MTSPR | RS(args[0]) | CTR); 3075 tcg_out32(s, ADDI | TAI(TCG_REG_R3, 0, 0)); 3076 tcg_out32(s, BCCTR | BO_ALWAYS); 3077 break; 3078 case INDEX_op_br: 3079 { 3080 TCGLabel *l = arg_label(args[0]); 3081 uint32_t insn = B; 3082 3083 if (l->has_value) { 3084 insn |= reloc_pc24_val(tcg_splitwx_to_rx(s->code_ptr), 3085 l->u.value_ptr); 3086 } else { 3087 tcg_out_reloc(s, s->code_ptr, R_PPC_REL24, l, 0); 3088 } 3089 tcg_out32(s, insn); 3090 } 3091 break; 3092 case INDEX_op_ld8u_i32: 3093 case INDEX_op_ld8u_i64: 3094 tcg_out_mem_long(s, LBZ, LBZX, args[0], args[1], args[2]); 3095 break; 3096 case INDEX_op_ld8s_i32: 3097 case INDEX_op_ld8s_i64: 3098 tcg_out_mem_long(s, LBZ, LBZX, args[0], args[1], args[2]); 3099 tcg_out_ext8s(s, TCG_TYPE_REG, args[0], args[0]); 3100 break; 3101 case INDEX_op_ld16u_i32: 3102 case INDEX_op_ld16u_i64: 3103 tcg_out_mem_long(s, LHZ, LHZX, args[0], args[1], args[2]); 3104 break; 3105 case INDEX_op_ld16s_i32: 3106 case INDEX_op_ld16s_i64: 3107 tcg_out_mem_long(s, LHA, LHAX, args[0], args[1], args[2]); 3108 break; 3109 case INDEX_op_ld_i32: 3110 case INDEX_op_ld32u_i64: 3111 tcg_out_mem_long(s, LWZ, LWZX, args[0], args[1], args[2]); 3112 break; 3113 case INDEX_op_ld32s_i64: 3114 tcg_out_mem_long(s, LWA, LWAX, args[0], args[1], args[2]); 3115 break; 3116 case INDEX_op_ld_i64: 3117 tcg_out_mem_long(s, LD, LDX, args[0], args[1], args[2]); 3118 break; 3119 case INDEX_op_st8_i32: 3120 case INDEX_op_st8_i64: 3121 tcg_out_mem_long(s, STB, STBX, args[0], args[1], args[2]); 3122 break; 3123 case INDEX_op_st16_i32: 3124 case INDEX_op_st16_i64: 3125 tcg_out_mem_long(s, STH, STHX, args[0], args[1], args[2]); 3126 break; 3127 case INDEX_op_st_i32: 3128 case INDEX_op_st32_i64: 3129 tcg_out_mem_long(s, STW, STWX, args[0], args[1], args[2]); 3130 break; 3131 case INDEX_op_st_i64: 3132 tcg_out_mem_long(s, STD, STDX, args[0], args[1], args[2]); 3133 break; 3134 3135 case INDEX_op_clz_i32: 3136 tcg_out_cntxz(s, TCG_TYPE_I32, CNTLZW, args[0], args[1], 3137 args[2], const_args[2]); 3138 break; 3139 case INDEX_op_ctz_i32: 3140 tcg_out_cntxz(s, TCG_TYPE_I32, CNTTZW, args[0], args[1], 3141 args[2], const_args[2]); 3142 break; 3143 case INDEX_op_ctpop_i32: 3144 tcg_out32(s, CNTPOPW | SAB(args[1], args[0], 0)); 3145 break; 3146 3147 case INDEX_op_clz_i64: 3148 tcg_out_cntxz(s, TCG_TYPE_I64, CNTLZD, args[0], args[1], 3149 args[2], const_args[2]); 3150 break; 3151 case INDEX_op_ctz_i64: 3152 tcg_out_cntxz(s, TCG_TYPE_I64, CNTTZD, args[0], args[1], 3153 args[2], const_args[2]); 3154 break; 3155 case INDEX_op_ctpop_i64: 3156 tcg_out32(s, CNTPOPD | SAB(args[1], args[0], 0)); 3157 break; 3158 3159 case INDEX_op_mul_i32: 3160 a0 = args[0], a1 = args[1], a2 = args[2]; 3161 if (const_args[2]) { 3162 tcg_out32(s, MULLI | TAI(a0, a1, a2)); 3163 } else { 3164 tcg_out32(s, MULLW | TAB(a0, a1, a2)); 3165 } 3166 break; 3167 3168 case INDEX_op_div_i32: 3169 tcg_out32(s, DIVW | TAB(args[0], args[1], args[2])); 3170 break; 3171 3172 case INDEX_op_divu_i32: 3173 tcg_out32(s, DIVWU | TAB(args[0], args[1], args[2])); 3174 break; 3175 3176 case INDEX_op_rem_i32: 3177 tcg_out32(s, MODSW | TAB(args[0], args[1], args[2])); 3178 break; 3179 3180 case INDEX_op_remu_i32: 3181 tcg_out32(s, MODUW | TAB(args[0], args[1], args[2])); 3182 break; 3183 3184 case INDEX_op_shl_i32: 3185 if (const_args[2]) { 3186 /* Limit immediate shift count lest we create an illegal insn. */ 3187 tcg_out_shli32(s, args[0], args[1], args[2] & 31); 3188 } else { 3189 tcg_out32(s, SLW | SAB(args[1], args[0], args[2])); 3190 } 3191 break; 3192 case INDEX_op_shr_i32: 3193 if (const_args[2]) { 3194 /* Limit immediate shift count lest we create an illegal insn. */ 3195 tcg_out_shri32(s, args[0], args[1], args[2] & 31); 3196 } else { 3197 tcg_out32(s, SRW | SAB(args[1], args[0], args[2])); 3198 } 3199 break; 3200 case INDEX_op_sar_i32: 3201 if (const_args[2]) { 3202 tcg_out_sari32(s, args[0], args[1], args[2]); 3203 } else { 3204 tcg_out32(s, SRAW | SAB(args[1], args[0], args[2])); 3205 } 3206 break; 3207 case INDEX_op_rotl_i32: 3208 if (const_args[2]) { 3209 tcg_out_rlw(s, RLWINM, args[0], args[1], args[2], 0, 31); 3210 } else { 3211 tcg_out32(s, RLWNM | SAB(args[1], args[0], args[2]) 3212 | MB(0) | ME(31)); 3213 } 3214 break; 3215 case INDEX_op_rotr_i32: 3216 if (const_args[2]) { 3217 tcg_out_rlw(s, RLWINM, args[0], args[1], 32 - args[2], 0, 31); 3218 } else { 3219 tcg_out32(s, SUBFIC | TAI(TCG_REG_R0, args[2], 32)); 3220 tcg_out32(s, RLWNM | SAB(args[1], args[0], TCG_REG_R0) 3221 | MB(0) | ME(31)); 3222 } 3223 break; 3224 3225 case INDEX_op_brcond_i32: 3226 tcg_out_brcond(s, args[2], args[0], args[1], const_args[1], 3227 arg_label(args[3]), TCG_TYPE_I32); 3228 break; 3229 case INDEX_op_brcond_i64: 3230 tcg_out_brcond(s, args[2], args[0], args[1], const_args[1], 3231 arg_label(args[3]), TCG_TYPE_I64); 3232 break; 3233 case INDEX_op_brcond2_i32: 3234 tcg_out_brcond2(s, args, const_args); 3235 break; 3236 3237 case INDEX_op_not_i32: 3238 case INDEX_op_not_i64: 3239 tcg_out32(s, NOR | SAB(args[1], args[0], args[1])); 3240 break; 3241 3242 case INDEX_op_shl_i64: 3243 if (const_args[2]) { 3244 /* Limit immediate shift count lest we create an illegal insn. */ 3245 tcg_out_shli64(s, args[0], args[1], args[2] & 63); 3246 } else { 3247 tcg_out32(s, SLD | SAB(args[1], args[0], args[2])); 3248 } 3249 break; 3250 case INDEX_op_shr_i64: 3251 if (const_args[2]) { 3252 /* Limit immediate shift count lest we create an illegal insn. */ 3253 tcg_out_shri64(s, args[0], args[1], args[2] & 63); 3254 } else { 3255 tcg_out32(s, SRD | SAB(args[1], args[0], args[2])); 3256 } 3257 break; 3258 case INDEX_op_sar_i64: 3259 if (const_args[2]) { 3260 tcg_out_sari64(s, args[0], args[1], args[2]); 3261 } else { 3262 tcg_out32(s, SRAD | SAB(args[1], args[0], args[2])); 3263 } 3264 break; 3265 case INDEX_op_rotl_i64: 3266 if (const_args[2]) { 3267 tcg_out_rld(s, RLDICL, args[0], args[1], args[2], 0); 3268 } else { 3269 tcg_out32(s, RLDCL | SAB(args[1], args[0], args[2]) | MB64(0)); 3270 } 3271 break; 3272 case INDEX_op_rotr_i64: 3273 if (const_args[2]) { 3274 tcg_out_rld(s, RLDICL, args[0], args[1], 64 - args[2], 0); 3275 } else { 3276 tcg_out32(s, SUBFIC | TAI(TCG_REG_R0, args[2], 64)); 3277 tcg_out32(s, RLDCL | SAB(args[1], args[0], TCG_REG_R0) | MB64(0)); 3278 } 3279 break; 3280 3281 case INDEX_op_mul_i64: 3282 a0 = args[0], a1 = args[1], a2 = args[2]; 3283 if (const_args[2]) { 3284 tcg_out32(s, MULLI | TAI(a0, a1, a2)); 3285 } else { 3286 tcg_out32(s, MULLD | TAB(a0, a1, a2)); 3287 } 3288 break; 3289 case INDEX_op_div_i64: 3290 tcg_out32(s, DIVD | TAB(args[0], args[1], args[2])); 3291 break; 3292 case INDEX_op_divu_i64: 3293 tcg_out32(s, DIVDU | TAB(args[0], args[1], args[2])); 3294 break; 3295 case INDEX_op_rem_i64: 3296 tcg_out32(s, MODSD | TAB(args[0], args[1], args[2])); 3297 break; 3298 case INDEX_op_remu_i64: 3299 tcg_out32(s, MODUD | TAB(args[0], args[1], args[2])); 3300 break; 3301 3302 case INDEX_op_qemu_ld_i32: 3303 tcg_out_qemu_ld(s, args[0], -1, args[1], args[2], TCG_TYPE_I32); 3304 break; 3305 case INDEX_op_qemu_ld_i64: 3306 if (TCG_TARGET_REG_BITS == 64) { 3307 tcg_out_qemu_ld(s, args[0], -1, args[1], args[2], TCG_TYPE_I64); 3308 } else { 3309 tcg_out_qemu_ld(s, args[0], args[1], args[2], 3310 args[3], TCG_TYPE_I64); 3311 } 3312 break; 3313 case INDEX_op_qemu_ld_i128: 3314 tcg_debug_assert(TCG_TARGET_REG_BITS == 64); 3315 tcg_out_qemu_ldst_i128(s, args[0], args[1], args[2], args[3], true); 3316 break; 3317 3318 case INDEX_op_qemu_st_i32: 3319 tcg_out_qemu_st(s, args[0], -1, args[1], args[2], TCG_TYPE_I32); 3320 break; 3321 case INDEX_op_qemu_st_i64: 3322 if (TCG_TARGET_REG_BITS == 64) { 3323 tcg_out_qemu_st(s, args[0], -1, args[1], args[2], TCG_TYPE_I64); 3324 } else { 3325 tcg_out_qemu_st(s, args[0], args[1], args[2], 3326 args[3], TCG_TYPE_I64); 3327 } 3328 break; 3329 case INDEX_op_qemu_st_i128: 3330 tcg_debug_assert(TCG_TARGET_REG_BITS == 64); 3331 tcg_out_qemu_ldst_i128(s, args[0], args[1], args[2], args[3], false); 3332 break; 3333 3334 case INDEX_op_setcond_i32: 3335 tcg_out_setcond(s, TCG_TYPE_I32, args[3], args[0], args[1], args[2], 3336 const_args[2], false); 3337 break; 3338 case INDEX_op_setcond_i64: 3339 tcg_out_setcond(s, TCG_TYPE_I64, args[3], args[0], args[1], args[2], 3340 const_args[2], false); 3341 break; 3342 case INDEX_op_negsetcond_i32: 3343 tcg_out_setcond(s, TCG_TYPE_I32, args[3], args[0], args[1], args[2], 3344 const_args[2], true); 3345 break; 3346 case INDEX_op_negsetcond_i64: 3347 tcg_out_setcond(s, TCG_TYPE_I64, args[3], args[0], args[1], args[2], 3348 const_args[2], true); 3349 break; 3350 case INDEX_op_setcond2_i32: 3351 tcg_out_setcond2(s, args, const_args); 3352 break; 3353 3354 case INDEX_op_bswap16_i32: 3355 case INDEX_op_bswap16_i64: 3356 tcg_out_bswap16(s, args[0], args[1], args[2]); 3357 break; 3358 case INDEX_op_bswap32_i32: 3359 tcg_out_bswap32(s, args[0], args[1], 0); 3360 break; 3361 case INDEX_op_bswap32_i64: 3362 tcg_out_bswap32(s, args[0], args[1], args[2]); 3363 break; 3364 case INDEX_op_bswap64_i64: 3365 tcg_out_bswap64(s, args[0], args[1]); 3366 break; 3367 3368 case INDEX_op_deposit_i32: 3369 if (const_args[2]) { 3370 uint32_t mask = ((2u << (args[4] - 1)) - 1) << args[3]; 3371 tcg_out_andi32(s, args[0], args[0], ~mask); 3372 } else { 3373 tcg_out_rlw(s, RLWIMI, args[0], args[2], args[3], 3374 32 - args[3] - args[4], 31 - args[3]); 3375 } 3376 break; 3377 case INDEX_op_deposit_i64: 3378 if (const_args[2]) { 3379 uint64_t mask = ((2ull << (args[4] - 1)) - 1) << args[3]; 3380 tcg_out_andi64(s, args[0], args[0], ~mask); 3381 } else { 3382 tcg_out_rld(s, RLDIMI, args[0], args[2], args[3], 3383 64 - args[3] - args[4]); 3384 } 3385 break; 3386 3387 case INDEX_op_extract_i32: 3388 if (args[2] == 0 && args[3] <= 16) { 3389 tcg_out32(s, ANDI | SAI(args[1], args[0], (1 << args[3]) - 1)); 3390 break; 3391 } 3392 tcg_out_rlw(s, RLWINM, args[0], args[1], 3393 32 - args[2], 32 - args[3], 31); 3394 break; 3395 case INDEX_op_extract_i64: 3396 if (args[2] == 0 && args[3] <= 16) { 3397 tcg_out32(s, ANDI | SAI(args[1], args[0], (1 << args[3]) - 1)); 3398 break; 3399 } 3400 tcg_out_rld(s, RLDICL, args[0], args[1], 64 - args[2], 64 - args[3]); 3401 break; 3402 3403 case INDEX_op_sextract_i64: 3404 if (args[2] + args[3] == 32) { 3405 if (args[2] == 0) { 3406 tcg_out_ext32s(s, args[0], args[1]); 3407 } else { 3408 tcg_out_sari32(s, args[0], args[1], args[2]); 3409 } 3410 break; 3411 } 3412 /* FALLTHRU */ 3413 case INDEX_op_sextract_i32: 3414 if (args[2] == 0 && args[3] == 8) { 3415 tcg_out_ext8s(s, TCG_TYPE_I32, args[0], args[1]); 3416 } else if (args[2] == 0 && args[3] == 16) { 3417 tcg_out_ext16s(s, TCG_TYPE_I32, args[0], args[1]); 3418 } else { 3419 g_assert_not_reached(); 3420 } 3421 break; 3422 3423 case INDEX_op_movcond_i32: 3424 tcg_out_movcond(s, TCG_TYPE_I32, args[5], args[0], args[1], args[2], 3425 args[3], args[4], const_args[2]); 3426 break; 3427 case INDEX_op_movcond_i64: 3428 tcg_out_movcond(s, TCG_TYPE_I64, args[5], args[0], args[1], args[2], 3429 args[3], args[4], const_args[2]); 3430 break; 3431 3432#if TCG_TARGET_REG_BITS == 64 3433 case INDEX_op_add2_i64: 3434#else 3435 case INDEX_op_add2_i32: 3436#endif 3437 /* Note that the CA bit is defined based on the word size of the 3438 environment. So in 64-bit mode it's always carry-out of bit 63. 3439 The fallback code using deposit works just as well for 32-bit. */ 3440 a0 = args[0], a1 = args[1]; 3441 if (a0 == args[3] || (!const_args[5] && a0 == args[5])) { 3442 a0 = TCG_REG_R0; 3443 } 3444 if (const_args[4]) { 3445 tcg_out32(s, ADDIC | TAI(a0, args[2], args[4])); 3446 } else { 3447 tcg_out32(s, ADDC | TAB(a0, args[2], args[4])); 3448 } 3449 if (const_args[5]) { 3450 tcg_out32(s, (args[5] ? ADDME : ADDZE) | RT(a1) | RA(args[3])); 3451 } else { 3452 tcg_out32(s, ADDE | TAB(a1, args[3], args[5])); 3453 } 3454 if (a0 != args[0]) { 3455 tcg_out_mov(s, TCG_TYPE_REG, args[0], a0); 3456 } 3457 break; 3458 3459#if TCG_TARGET_REG_BITS == 64 3460 case INDEX_op_sub2_i64: 3461#else 3462 case INDEX_op_sub2_i32: 3463#endif 3464 a0 = args[0], a1 = args[1]; 3465 if (a0 == args[5] || (!const_args[3] && a0 == args[3])) { 3466 a0 = TCG_REG_R0; 3467 } 3468 if (const_args[2]) { 3469 tcg_out32(s, SUBFIC | TAI(a0, args[4], args[2])); 3470 } else { 3471 tcg_out32(s, SUBFC | TAB(a0, args[4], args[2])); 3472 } 3473 if (const_args[3]) { 3474 tcg_out32(s, (args[3] ? SUBFME : SUBFZE) | RT(a1) | RA(args[5])); 3475 } else { 3476 tcg_out32(s, SUBFE | TAB(a1, args[5], args[3])); 3477 } 3478 if (a0 != args[0]) { 3479 tcg_out_mov(s, TCG_TYPE_REG, args[0], a0); 3480 } 3481 break; 3482 3483 case INDEX_op_muluh_i32: 3484 tcg_out32(s, MULHWU | TAB(args[0], args[1], args[2])); 3485 break; 3486 case INDEX_op_mulsh_i32: 3487 tcg_out32(s, MULHW | TAB(args[0], args[1], args[2])); 3488 break; 3489 case INDEX_op_muluh_i64: 3490 tcg_out32(s, MULHDU | TAB(args[0], args[1], args[2])); 3491 break; 3492 case INDEX_op_mulsh_i64: 3493 tcg_out32(s, MULHD | TAB(args[0], args[1], args[2])); 3494 break; 3495 3496 case INDEX_op_mb: 3497 tcg_out_mb(s, args[0]); 3498 break; 3499 3500 case INDEX_op_call: /* Always emitted via tcg_out_call. */ 3501 case INDEX_op_exit_tb: /* Always emitted via tcg_out_exit_tb. */ 3502 case INDEX_op_goto_tb: /* Always emitted via tcg_out_goto_tb. */ 3503 case INDEX_op_ext_i32_i64: /* Always emitted via tcg_reg_alloc_op. */ 3504 case INDEX_op_extu_i32_i64: 3505 case INDEX_op_extrl_i64_i32: 3506 default: 3507 g_assert_not_reached(); 3508 } 3509} 3510 3511int tcg_can_emit_vec_op(TCGOpcode opc, TCGType type, unsigned vece) 3512{ 3513 switch (opc) { 3514 case INDEX_op_and_vec: 3515 case INDEX_op_or_vec: 3516 case INDEX_op_xor_vec: 3517 case INDEX_op_andc_vec: 3518 case INDEX_op_not_vec: 3519 case INDEX_op_nor_vec: 3520 case INDEX_op_eqv_vec: 3521 case INDEX_op_nand_vec: 3522 return 1; 3523 case INDEX_op_orc_vec: 3524 return have_isa_2_07; 3525 case INDEX_op_add_vec: 3526 case INDEX_op_sub_vec: 3527 case INDEX_op_smax_vec: 3528 case INDEX_op_smin_vec: 3529 case INDEX_op_umax_vec: 3530 case INDEX_op_umin_vec: 3531 case INDEX_op_shlv_vec: 3532 case INDEX_op_shrv_vec: 3533 case INDEX_op_sarv_vec: 3534 case INDEX_op_rotlv_vec: 3535 return vece <= MO_32 || have_isa_2_07; 3536 case INDEX_op_ssadd_vec: 3537 case INDEX_op_sssub_vec: 3538 case INDEX_op_usadd_vec: 3539 case INDEX_op_ussub_vec: 3540 return vece <= MO_32; 3541 case INDEX_op_shli_vec: 3542 case INDEX_op_shri_vec: 3543 case INDEX_op_sari_vec: 3544 case INDEX_op_rotli_vec: 3545 return vece <= MO_32 || have_isa_2_07 ? -1 : 0; 3546 case INDEX_op_cmp_vec: 3547 case INDEX_op_cmpsel_vec: 3548 return vece <= MO_32 || have_isa_2_07 ? 1 : 0; 3549 case INDEX_op_neg_vec: 3550 return vece >= MO_32 && have_isa_3_00; 3551 case INDEX_op_mul_vec: 3552 switch (vece) { 3553 case MO_8: 3554 case MO_16: 3555 return -1; 3556 case MO_32: 3557 return have_isa_2_07 ? 1 : -1; 3558 case MO_64: 3559 return have_isa_3_10; 3560 } 3561 return 0; 3562 case INDEX_op_bitsel_vec: 3563 return have_vsx; 3564 case INDEX_op_rotrv_vec: 3565 return -1; 3566 default: 3567 return 0; 3568 } 3569} 3570 3571static bool tcg_out_dup_vec(TCGContext *s, TCGType type, unsigned vece, 3572 TCGReg dst, TCGReg src) 3573{ 3574 tcg_debug_assert(dst >= TCG_REG_V0); 3575 3576 /* Splat from integer reg allowed via constraints for v3.00. */ 3577 if (src < TCG_REG_V0) { 3578 tcg_debug_assert(have_isa_3_00); 3579 switch (vece) { 3580 case MO_64: 3581 tcg_out32(s, MTVSRDD | VRT(dst) | RA(src) | RB(src)); 3582 return true; 3583 case MO_32: 3584 tcg_out32(s, MTVSRWS | VRT(dst) | RA(src)); 3585 return true; 3586 default: 3587 /* Fail, so that we fall back on either dupm or mov+dup. */ 3588 return false; 3589 } 3590 } 3591 3592 /* 3593 * Recall we use (or emulate) VSX integer loads, so the integer is 3594 * right justified within the left (zero-index) double-word. 3595 */ 3596 switch (vece) { 3597 case MO_8: 3598 tcg_out32(s, VSPLTB | VRT(dst) | VRB(src) | (7 << 16)); 3599 break; 3600 case MO_16: 3601 tcg_out32(s, VSPLTH | VRT(dst) | VRB(src) | (3 << 16)); 3602 break; 3603 case MO_32: 3604 tcg_out32(s, VSPLTW | VRT(dst) | VRB(src) | (1 << 16)); 3605 break; 3606 case MO_64: 3607 if (have_vsx) { 3608 tcg_out32(s, XXPERMDI | VRT(dst) | VRA(src) | VRB(src)); 3609 break; 3610 } 3611 tcg_out_vsldoi(s, TCG_VEC_TMP1, src, src, 8); 3612 tcg_out_vsldoi(s, dst, TCG_VEC_TMP1, src, 8); 3613 break; 3614 default: 3615 g_assert_not_reached(); 3616 } 3617 return true; 3618} 3619 3620static bool tcg_out_dupm_vec(TCGContext *s, TCGType type, unsigned vece, 3621 TCGReg out, TCGReg base, intptr_t offset) 3622{ 3623 int elt; 3624 3625 tcg_debug_assert(out >= TCG_REG_V0); 3626 switch (vece) { 3627 case MO_8: 3628 if (have_isa_3_00) { 3629 tcg_out_mem_long(s, LXV, LVX, out, base, offset & -16); 3630 } else { 3631 tcg_out_mem_long(s, 0, LVEBX, out, base, offset); 3632 } 3633 elt = extract32(offset, 0, 4); 3634#if !HOST_BIG_ENDIAN 3635 elt ^= 15; 3636#endif 3637 tcg_out32(s, VSPLTB | VRT(out) | VRB(out) | (elt << 16)); 3638 break; 3639 case MO_16: 3640 tcg_debug_assert((offset & 1) == 0); 3641 if (have_isa_3_00) { 3642 tcg_out_mem_long(s, LXV | 8, LVX, out, base, offset & -16); 3643 } else { 3644 tcg_out_mem_long(s, 0, LVEHX, out, base, offset); 3645 } 3646 elt = extract32(offset, 1, 3); 3647#if !HOST_BIG_ENDIAN 3648 elt ^= 7; 3649#endif 3650 tcg_out32(s, VSPLTH | VRT(out) | VRB(out) | (elt << 16)); 3651 break; 3652 case MO_32: 3653 if (have_isa_3_00) { 3654 tcg_out_mem_long(s, 0, LXVWSX, out, base, offset); 3655 break; 3656 } 3657 tcg_debug_assert((offset & 3) == 0); 3658 tcg_out_mem_long(s, 0, LVEWX, out, base, offset); 3659 elt = extract32(offset, 2, 2); 3660#if !HOST_BIG_ENDIAN 3661 elt ^= 3; 3662#endif 3663 tcg_out32(s, VSPLTW | VRT(out) | VRB(out) | (elt << 16)); 3664 break; 3665 case MO_64: 3666 if (have_vsx) { 3667 tcg_out_mem_long(s, 0, LXVDSX, out, base, offset); 3668 break; 3669 } 3670 tcg_debug_assert((offset & 7) == 0); 3671 tcg_out_mem_long(s, 0, LVX, out, base, offset & -16); 3672 tcg_out_vsldoi(s, TCG_VEC_TMP1, out, out, 8); 3673 elt = extract32(offset, 3, 1); 3674#if !HOST_BIG_ENDIAN 3675 elt = !elt; 3676#endif 3677 if (elt) { 3678 tcg_out_vsldoi(s, out, out, TCG_VEC_TMP1, 8); 3679 } else { 3680 tcg_out_vsldoi(s, out, TCG_VEC_TMP1, out, 8); 3681 } 3682 break; 3683 default: 3684 g_assert_not_reached(); 3685 } 3686 return true; 3687} 3688 3689static void tcg_out_not_vec(TCGContext *s, TCGReg a0, TCGReg a1) 3690{ 3691 tcg_out32(s, VNOR | VRT(a0) | VRA(a1) | VRB(a1)); 3692} 3693 3694static void tcg_out_or_vec(TCGContext *s, TCGReg a0, TCGReg a1, TCGReg a2) 3695{ 3696 tcg_out32(s, VOR | VRT(a0) | VRA(a1) | VRB(a2)); 3697} 3698 3699static void tcg_out_orc_vec(TCGContext *s, TCGReg a0, TCGReg a1, TCGReg a2) 3700{ 3701 tcg_out32(s, VORC | VRT(a0) | VRA(a1) | VRB(a2)); 3702} 3703 3704static void tcg_out_and_vec(TCGContext *s, TCGReg a0, TCGReg a1, TCGReg a2) 3705{ 3706 tcg_out32(s, VAND | VRT(a0) | VRA(a1) | VRB(a2)); 3707} 3708 3709static void tcg_out_andc_vec(TCGContext *s, TCGReg a0, TCGReg a1, TCGReg a2) 3710{ 3711 tcg_out32(s, VANDC | VRT(a0) | VRA(a1) | VRB(a2)); 3712} 3713 3714static void tcg_out_bitsel_vec(TCGContext *s, TCGReg d, 3715 TCGReg c, TCGReg t, TCGReg f) 3716{ 3717 if (TCG_TARGET_HAS_bitsel_vec) { 3718 tcg_out32(s, XXSEL | VRT(d) | VRC(c) | VRB(t) | VRA(f)); 3719 } else { 3720 tcg_out_and_vec(s, TCG_VEC_TMP2, t, c); 3721 tcg_out_andc_vec(s, d, f, c); 3722 tcg_out_or_vec(s, d, d, TCG_VEC_TMP2); 3723 } 3724} 3725 3726static bool tcg_out_cmp_vec_noinv(TCGContext *s, unsigned vece, TCGReg a0, 3727 TCGReg a1, TCGReg a2, TCGCond cond) 3728{ 3729 static const uint32_t 3730 eq_op[4] = { VCMPEQUB, VCMPEQUH, VCMPEQUW, VCMPEQUD }, 3731 ne_op[4] = { VCMPNEB, VCMPNEH, VCMPNEW, 0 }, 3732 gts_op[4] = { VCMPGTSB, VCMPGTSH, VCMPGTSW, VCMPGTSD }, 3733 gtu_op[4] = { VCMPGTUB, VCMPGTUH, VCMPGTUW, VCMPGTUD }; 3734 uint32_t insn; 3735 3736 bool need_swap = false, need_inv = false; 3737 3738 tcg_debug_assert(vece <= MO_32 || have_isa_2_07); 3739 3740 switch (cond) { 3741 case TCG_COND_EQ: 3742 case TCG_COND_GT: 3743 case TCG_COND_GTU: 3744 break; 3745 case TCG_COND_NE: 3746 if (have_isa_3_00 && vece <= MO_32) { 3747 break; 3748 } 3749 /* fall through */ 3750 case TCG_COND_LE: 3751 case TCG_COND_LEU: 3752 need_inv = true; 3753 break; 3754 case TCG_COND_LT: 3755 case TCG_COND_LTU: 3756 need_swap = true; 3757 break; 3758 case TCG_COND_GE: 3759 case TCG_COND_GEU: 3760 need_swap = need_inv = true; 3761 break; 3762 default: 3763 g_assert_not_reached(); 3764 } 3765 3766 if (need_inv) { 3767 cond = tcg_invert_cond(cond); 3768 } 3769 if (need_swap) { 3770 TCGReg swap = a1; 3771 a1 = a2; 3772 a2 = swap; 3773 cond = tcg_swap_cond(cond); 3774 } 3775 3776 switch (cond) { 3777 case TCG_COND_EQ: 3778 insn = eq_op[vece]; 3779 break; 3780 case TCG_COND_NE: 3781 insn = ne_op[vece]; 3782 break; 3783 case TCG_COND_GT: 3784 insn = gts_op[vece]; 3785 break; 3786 case TCG_COND_GTU: 3787 insn = gtu_op[vece]; 3788 break; 3789 default: 3790 g_assert_not_reached(); 3791 } 3792 tcg_out32(s, insn | VRT(a0) | VRA(a1) | VRB(a2)); 3793 3794 return need_inv; 3795} 3796 3797static void tcg_out_cmp_vec(TCGContext *s, unsigned vece, TCGReg a0, 3798 TCGReg a1, TCGReg a2, TCGCond cond) 3799{ 3800 if (tcg_out_cmp_vec_noinv(s, vece, a0, a1, a2, cond)) { 3801 tcg_out_not_vec(s, a0, a0); 3802 } 3803} 3804 3805static void tcg_out_cmpsel_vec(TCGContext *s, unsigned vece, TCGReg a0, 3806 TCGReg c1, TCGReg c2, TCGArg v3, int const_v3, 3807 TCGReg v4, TCGCond cond) 3808{ 3809 bool inv = tcg_out_cmp_vec_noinv(s, vece, TCG_VEC_TMP1, c1, c2, cond); 3810 3811 if (!const_v3) { 3812 if (inv) { 3813 tcg_out_bitsel_vec(s, a0, TCG_VEC_TMP1, v4, v3); 3814 } else { 3815 tcg_out_bitsel_vec(s, a0, TCG_VEC_TMP1, v3, v4); 3816 } 3817 } else if (v3) { 3818 if (inv) { 3819 tcg_out_orc_vec(s, a0, v4, TCG_VEC_TMP1); 3820 } else { 3821 tcg_out_or_vec(s, a0, v4, TCG_VEC_TMP1); 3822 } 3823 } else { 3824 if (inv) { 3825 tcg_out_and_vec(s, a0, v4, TCG_VEC_TMP1); 3826 } else { 3827 tcg_out_andc_vec(s, a0, v4, TCG_VEC_TMP1); 3828 } 3829 } 3830} 3831 3832static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc, 3833 unsigned vecl, unsigned vece, 3834 const TCGArg args[TCG_MAX_OP_ARGS], 3835 const int const_args[TCG_MAX_OP_ARGS]) 3836{ 3837 static const uint32_t 3838 add_op[4] = { VADDUBM, VADDUHM, VADDUWM, VADDUDM }, 3839 sub_op[4] = { VSUBUBM, VSUBUHM, VSUBUWM, VSUBUDM }, 3840 mul_op[4] = { 0, 0, VMULUWM, VMULLD }, 3841 neg_op[4] = { 0, 0, VNEGW, VNEGD }, 3842 ssadd_op[4] = { VADDSBS, VADDSHS, VADDSWS, 0 }, 3843 usadd_op[4] = { VADDUBS, VADDUHS, VADDUWS, 0 }, 3844 sssub_op[4] = { VSUBSBS, VSUBSHS, VSUBSWS, 0 }, 3845 ussub_op[4] = { VSUBUBS, VSUBUHS, VSUBUWS, 0 }, 3846 umin_op[4] = { VMINUB, VMINUH, VMINUW, VMINUD }, 3847 smin_op[4] = { VMINSB, VMINSH, VMINSW, VMINSD }, 3848 umax_op[4] = { VMAXUB, VMAXUH, VMAXUW, VMAXUD }, 3849 smax_op[4] = { VMAXSB, VMAXSH, VMAXSW, VMAXSD }, 3850 shlv_op[4] = { VSLB, VSLH, VSLW, VSLD }, 3851 shrv_op[4] = { VSRB, VSRH, VSRW, VSRD }, 3852 sarv_op[4] = { VSRAB, VSRAH, VSRAW, VSRAD }, 3853 mrgh_op[4] = { VMRGHB, VMRGHH, VMRGHW, 0 }, 3854 mrgl_op[4] = { VMRGLB, VMRGLH, VMRGLW, 0 }, 3855 muleu_op[4] = { VMULEUB, VMULEUH, VMULEUW, 0 }, 3856 mulou_op[4] = { VMULOUB, VMULOUH, VMULOUW, 0 }, 3857 pkum_op[4] = { VPKUHUM, VPKUWUM, 0, 0 }, 3858 rotl_op[4] = { VRLB, VRLH, VRLW, VRLD }; 3859 3860 TCGType type = vecl + TCG_TYPE_V64; 3861 TCGArg a0 = args[0], a1 = args[1], a2 = args[2]; 3862 uint32_t insn; 3863 3864 switch (opc) { 3865 case INDEX_op_ld_vec: 3866 tcg_out_ld(s, type, a0, a1, a2); 3867 return; 3868 case INDEX_op_st_vec: 3869 tcg_out_st(s, type, a0, a1, a2); 3870 return; 3871 case INDEX_op_dupm_vec: 3872 tcg_out_dupm_vec(s, type, vece, a0, a1, a2); 3873 return; 3874 3875 case INDEX_op_add_vec: 3876 insn = add_op[vece]; 3877 break; 3878 case INDEX_op_sub_vec: 3879 insn = sub_op[vece]; 3880 break; 3881 case INDEX_op_neg_vec: 3882 insn = neg_op[vece]; 3883 a2 = a1; 3884 a1 = 0; 3885 break; 3886 case INDEX_op_mul_vec: 3887 insn = mul_op[vece]; 3888 break; 3889 case INDEX_op_ssadd_vec: 3890 insn = ssadd_op[vece]; 3891 break; 3892 case INDEX_op_sssub_vec: 3893 insn = sssub_op[vece]; 3894 break; 3895 case INDEX_op_usadd_vec: 3896 insn = usadd_op[vece]; 3897 break; 3898 case INDEX_op_ussub_vec: 3899 insn = ussub_op[vece]; 3900 break; 3901 case INDEX_op_smin_vec: 3902 insn = smin_op[vece]; 3903 break; 3904 case INDEX_op_umin_vec: 3905 insn = umin_op[vece]; 3906 break; 3907 case INDEX_op_smax_vec: 3908 insn = smax_op[vece]; 3909 break; 3910 case INDEX_op_umax_vec: 3911 insn = umax_op[vece]; 3912 break; 3913 case INDEX_op_shlv_vec: 3914 insn = shlv_op[vece]; 3915 break; 3916 case INDEX_op_shrv_vec: 3917 insn = shrv_op[vece]; 3918 break; 3919 case INDEX_op_sarv_vec: 3920 insn = sarv_op[vece]; 3921 break; 3922 case INDEX_op_and_vec: 3923 tcg_out_and_vec(s, a0, a1, a2); 3924 return; 3925 case INDEX_op_or_vec: 3926 tcg_out_or_vec(s, a0, a1, a2); 3927 return; 3928 case INDEX_op_xor_vec: 3929 insn = VXOR; 3930 break; 3931 case INDEX_op_andc_vec: 3932 tcg_out_andc_vec(s, a0, a1, a2); 3933 return; 3934 case INDEX_op_not_vec: 3935 tcg_out_not_vec(s, a0, a1); 3936 return; 3937 case INDEX_op_orc_vec: 3938 tcg_out_orc_vec(s, a0, a1, a2); 3939 return; 3940 case INDEX_op_nand_vec: 3941 insn = VNAND; 3942 break; 3943 case INDEX_op_nor_vec: 3944 insn = VNOR; 3945 break; 3946 case INDEX_op_eqv_vec: 3947 insn = VEQV; 3948 break; 3949 3950 case INDEX_op_cmp_vec: 3951 tcg_out_cmp_vec(s, vece, a0, a1, a2, args[3]); 3952 return; 3953 case INDEX_op_cmpsel_vec: 3954 tcg_out_cmpsel_vec(s, vece, a0, a1, a2, 3955 args[3], const_args[3], args[4], args[5]); 3956 return; 3957 case INDEX_op_bitsel_vec: 3958 tcg_out_bitsel_vec(s, a0, a1, a2, args[3]); 3959 return; 3960 3961 case INDEX_op_dup2_vec: 3962 assert(TCG_TARGET_REG_BITS == 32); 3963 /* With inputs a1 = xLxx, a2 = xHxx */ 3964 tcg_out32(s, VMRGHW | VRT(a0) | VRA(a2) | VRB(a1)); /* a0 = xxHL */ 3965 tcg_out_vsldoi(s, TCG_VEC_TMP1, a0, a0, 8); /* tmp = HLxx */ 3966 tcg_out_vsldoi(s, a0, a0, TCG_VEC_TMP1, 8); /* a0 = HLHL */ 3967 return; 3968 3969 case INDEX_op_ppc_mrgh_vec: 3970 insn = mrgh_op[vece]; 3971 break; 3972 case INDEX_op_ppc_mrgl_vec: 3973 insn = mrgl_op[vece]; 3974 break; 3975 case INDEX_op_ppc_muleu_vec: 3976 insn = muleu_op[vece]; 3977 break; 3978 case INDEX_op_ppc_mulou_vec: 3979 insn = mulou_op[vece]; 3980 break; 3981 case INDEX_op_ppc_pkum_vec: 3982 insn = pkum_op[vece]; 3983 break; 3984 case INDEX_op_rotlv_vec: 3985 insn = rotl_op[vece]; 3986 break; 3987 case INDEX_op_ppc_msum_vec: 3988 tcg_debug_assert(vece == MO_16); 3989 tcg_out32(s, VMSUMUHM | VRT(a0) | VRA(a1) | VRB(a2) | VRC(args[3])); 3990 return; 3991 3992 case INDEX_op_mov_vec: /* Always emitted via tcg_out_mov. */ 3993 case INDEX_op_dup_vec: /* Always emitted via tcg_out_dup_vec. */ 3994 default: 3995 g_assert_not_reached(); 3996 } 3997 3998 tcg_debug_assert(insn != 0); 3999 tcg_out32(s, insn | VRT(a0) | VRA(a1) | VRB(a2)); 4000} 4001 4002static void expand_vec_shi(TCGType type, unsigned vece, TCGv_vec v0, 4003 TCGv_vec v1, TCGArg imm, TCGOpcode opci) 4004{ 4005 TCGv_vec t1; 4006 4007 if (vece == MO_32) { 4008 /* 4009 * Only 5 bits are significant, and VSPLTISB can represent -16..15. 4010 * So using negative numbers gets us the 4th bit easily. 4011 */ 4012 imm = sextract32(imm, 0, 5); 4013 } else { 4014 imm &= (8 << vece) - 1; 4015 } 4016 4017 /* Splat w/bytes for xxspltib when 2.07 allows MO_64. */ 4018 t1 = tcg_constant_vec(type, MO_8, imm); 4019 vec_gen_3(opci, type, vece, tcgv_vec_arg(v0), 4020 tcgv_vec_arg(v1), tcgv_vec_arg(t1)); 4021} 4022 4023static void expand_vec_mul(TCGType type, unsigned vece, TCGv_vec v0, 4024 TCGv_vec v1, TCGv_vec v2) 4025{ 4026 TCGv_vec t1 = tcg_temp_new_vec(type); 4027 TCGv_vec t2 = tcg_temp_new_vec(type); 4028 TCGv_vec c0, c16; 4029 4030 switch (vece) { 4031 case MO_8: 4032 case MO_16: 4033 vec_gen_3(INDEX_op_ppc_muleu_vec, type, vece, tcgv_vec_arg(t1), 4034 tcgv_vec_arg(v1), tcgv_vec_arg(v2)); 4035 vec_gen_3(INDEX_op_ppc_mulou_vec, type, vece, tcgv_vec_arg(t2), 4036 tcgv_vec_arg(v1), tcgv_vec_arg(v2)); 4037 vec_gen_3(INDEX_op_ppc_mrgh_vec, type, vece + 1, tcgv_vec_arg(v0), 4038 tcgv_vec_arg(t1), tcgv_vec_arg(t2)); 4039 vec_gen_3(INDEX_op_ppc_mrgl_vec, type, vece + 1, tcgv_vec_arg(t1), 4040 tcgv_vec_arg(t1), tcgv_vec_arg(t2)); 4041 vec_gen_3(INDEX_op_ppc_pkum_vec, type, vece, tcgv_vec_arg(v0), 4042 tcgv_vec_arg(v0), tcgv_vec_arg(t1)); 4043 break; 4044 4045 case MO_32: 4046 tcg_debug_assert(!have_isa_2_07); 4047 /* 4048 * Only 5 bits are significant, and VSPLTISB can represent -16..15. 4049 * So using -16 is a quick way to represent 16. 4050 */ 4051 c16 = tcg_constant_vec(type, MO_8, -16); 4052 c0 = tcg_constant_vec(type, MO_8, 0); 4053 4054 vec_gen_3(INDEX_op_rotlv_vec, type, MO_32, tcgv_vec_arg(t1), 4055 tcgv_vec_arg(v2), tcgv_vec_arg(c16)); 4056 vec_gen_3(INDEX_op_ppc_mulou_vec, type, MO_16, tcgv_vec_arg(t2), 4057 tcgv_vec_arg(v1), tcgv_vec_arg(v2)); 4058 vec_gen_4(INDEX_op_ppc_msum_vec, type, MO_16, tcgv_vec_arg(t1), 4059 tcgv_vec_arg(v1), tcgv_vec_arg(t1), tcgv_vec_arg(c0)); 4060 vec_gen_3(INDEX_op_shlv_vec, type, MO_32, tcgv_vec_arg(t1), 4061 tcgv_vec_arg(t1), tcgv_vec_arg(c16)); 4062 tcg_gen_add_vec(MO_32, v0, t1, t2); 4063 break; 4064 4065 default: 4066 g_assert_not_reached(); 4067 } 4068 tcg_temp_free_vec(t1); 4069 tcg_temp_free_vec(t2); 4070} 4071 4072void tcg_expand_vec_op(TCGOpcode opc, TCGType type, unsigned vece, 4073 TCGArg a0, ...) 4074{ 4075 va_list va; 4076 TCGv_vec v0, v1, v2, t0; 4077 TCGArg a2; 4078 4079 va_start(va, a0); 4080 v0 = temp_tcgv_vec(arg_temp(a0)); 4081 v1 = temp_tcgv_vec(arg_temp(va_arg(va, TCGArg))); 4082 a2 = va_arg(va, TCGArg); 4083 4084 switch (opc) { 4085 case INDEX_op_shli_vec: 4086 expand_vec_shi(type, vece, v0, v1, a2, INDEX_op_shlv_vec); 4087 break; 4088 case INDEX_op_shri_vec: 4089 expand_vec_shi(type, vece, v0, v1, a2, INDEX_op_shrv_vec); 4090 break; 4091 case INDEX_op_sari_vec: 4092 expand_vec_shi(type, vece, v0, v1, a2, INDEX_op_sarv_vec); 4093 break; 4094 case INDEX_op_rotli_vec: 4095 expand_vec_shi(type, vece, v0, v1, a2, INDEX_op_rotlv_vec); 4096 break; 4097 case INDEX_op_mul_vec: 4098 v2 = temp_tcgv_vec(arg_temp(a2)); 4099 expand_vec_mul(type, vece, v0, v1, v2); 4100 break; 4101 case INDEX_op_rotlv_vec: 4102 v2 = temp_tcgv_vec(arg_temp(a2)); 4103 t0 = tcg_temp_new_vec(type); 4104 tcg_gen_neg_vec(vece, t0, v2); 4105 tcg_gen_rotlv_vec(vece, v0, v1, t0); 4106 tcg_temp_free_vec(t0); 4107 break; 4108 default: 4109 g_assert_not_reached(); 4110 } 4111 va_end(va); 4112} 4113 4114static TCGConstraintSetIndex 4115tcg_target_op_def(TCGOpcode op, TCGType type, unsigned flags) 4116{ 4117 switch (op) { 4118 case INDEX_op_goto_ptr: 4119 return C_O0_I1(r); 4120 4121 case INDEX_op_ld8u_i32: 4122 case INDEX_op_ld8s_i32: 4123 case INDEX_op_ld16u_i32: 4124 case INDEX_op_ld16s_i32: 4125 case INDEX_op_ld_i32: 4126 case INDEX_op_ctpop_i32: 4127 case INDEX_op_not_i32: 4128 case INDEX_op_bswap16_i32: 4129 case INDEX_op_bswap32_i32: 4130 case INDEX_op_extract_i32: 4131 case INDEX_op_sextract_i32: 4132 case INDEX_op_ld8u_i64: 4133 case INDEX_op_ld8s_i64: 4134 case INDEX_op_ld16u_i64: 4135 case INDEX_op_ld16s_i64: 4136 case INDEX_op_ld32u_i64: 4137 case INDEX_op_ld32s_i64: 4138 case INDEX_op_ld_i64: 4139 case INDEX_op_ctpop_i64: 4140 case INDEX_op_not_i64: 4141 case INDEX_op_ext_i32_i64: 4142 case INDEX_op_extu_i32_i64: 4143 case INDEX_op_bswap16_i64: 4144 case INDEX_op_bswap32_i64: 4145 case INDEX_op_bswap64_i64: 4146 case INDEX_op_extract_i64: 4147 case INDEX_op_sextract_i64: 4148 return C_O1_I1(r, r); 4149 4150 case INDEX_op_st8_i32: 4151 case INDEX_op_st16_i32: 4152 case INDEX_op_st_i32: 4153 case INDEX_op_st8_i64: 4154 case INDEX_op_st16_i64: 4155 case INDEX_op_st32_i64: 4156 case INDEX_op_st_i64: 4157 return C_O0_I2(r, r); 4158 4159 case INDEX_op_shl_i32: 4160 case INDEX_op_shr_i32: 4161 case INDEX_op_sar_i32: 4162 case INDEX_op_rotl_i32: 4163 case INDEX_op_rotr_i32: 4164 case INDEX_op_shl_i64: 4165 case INDEX_op_shr_i64: 4166 case INDEX_op_sar_i64: 4167 case INDEX_op_rotl_i64: 4168 case INDEX_op_rotr_i64: 4169 return C_O1_I2(r, r, ri); 4170 4171 case INDEX_op_mul_i32: 4172 case INDEX_op_mul_i64: 4173 return C_O1_I2(r, r, rI); 4174 4175 case INDEX_op_div_i32: 4176 case INDEX_op_divu_i32: 4177 case INDEX_op_rem_i32: 4178 case INDEX_op_remu_i32: 4179 case INDEX_op_muluh_i32: 4180 case INDEX_op_mulsh_i32: 4181 case INDEX_op_div_i64: 4182 case INDEX_op_divu_i64: 4183 case INDEX_op_rem_i64: 4184 case INDEX_op_remu_i64: 4185 case INDEX_op_mulsh_i64: 4186 case INDEX_op_muluh_i64: 4187 return C_O1_I2(r, r, r); 4188 4189 case INDEX_op_clz_i32: 4190 case INDEX_op_ctz_i32: 4191 case INDEX_op_clz_i64: 4192 case INDEX_op_ctz_i64: 4193 return C_O1_I2(r, r, rZW); 4194 4195 case INDEX_op_brcond_i32: 4196 case INDEX_op_brcond_i64: 4197 return C_O0_I2(r, rC); 4198 case INDEX_op_setcond_i32: 4199 case INDEX_op_setcond_i64: 4200 case INDEX_op_negsetcond_i32: 4201 case INDEX_op_negsetcond_i64: 4202 return C_O1_I2(r, r, rC); 4203 case INDEX_op_movcond_i32: 4204 case INDEX_op_movcond_i64: 4205 return C_O1_I4(r, r, rC, rZ, rZ); 4206 4207 case INDEX_op_deposit_i32: 4208 case INDEX_op_deposit_i64: 4209 return C_O1_I2(r, 0, rZ); 4210 case INDEX_op_brcond2_i32: 4211 return C_O0_I4(r, r, ri, ri); 4212 case INDEX_op_setcond2_i32: 4213 return C_O1_I4(r, r, r, ri, ri); 4214 case INDEX_op_add2_i64: 4215 case INDEX_op_add2_i32: 4216 return C_O2_I4(r, r, r, r, rI, rZM); 4217 case INDEX_op_sub2_i64: 4218 case INDEX_op_sub2_i32: 4219 return C_O2_I4(r, r, rI, rZM, r, r); 4220 4221 case INDEX_op_qemu_ld_i32: 4222 return C_O1_I1(r, r); 4223 case INDEX_op_qemu_ld_i64: 4224 return TCG_TARGET_REG_BITS == 64 ? C_O1_I1(r, r) : C_O2_I1(r, r, r); 4225 4226 case INDEX_op_qemu_st_i32: 4227 return C_O0_I2(r, r); 4228 case INDEX_op_qemu_st_i64: 4229 return TCG_TARGET_REG_BITS == 64 ? C_O0_I2(r, r) : C_O0_I3(r, r, r); 4230 4231 case INDEX_op_qemu_ld_i128: 4232 return C_N1O1_I1(o, m, r); 4233 case INDEX_op_qemu_st_i128: 4234 return C_O0_I3(o, m, r); 4235 4236 case INDEX_op_add_vec: 4237 case INDEX_op_sub_vec: 4238 case INDEX_op_mul_vec: 4239 case INDEX_op_and_vec: 4240 case INDEX_op_or_vec: 4241 case INDEX_op_xor_vec: 4242 case INDEX_op_andc_vec: 4243 case INDEX_op_orc_vec: 4244 case INDEX_op_nor_vec: 4245 case INDEX_op_eqv_vec: 4246 case INDEX_op_nand_vec: 4247 case INDEX_op_cmp_vec: 4248 case INDEX_op_ssadd_vec: 4249 case INDEX_op_sssub_vec: 4250 case INDEX_op_usadd_vec: 4251 case INDEX_op_ussub_vec: 4252 case INDEX_op_smax_vec: 4253 case INDEX_op_smin_vec: 4254 case INDEX_op_umax_vec: 4255 case INDEX_op_umin_vec: 4256 case INDEX_op_shlv_vec: 4257 case INDEX_op_shrv_vec: 4258 case INDEX_op_sarv_vec: 4259 case INDEX_op_rotlv_vec: 4260 case INDEX_op_rotrv_vec: 4261 case INDEX_op_ppc_mrgh_vec: 4262 case INDEX_op_ppc_mrgl_vec: 4263 case INDEX_op_ppc_muleu_vec: 4264 case INDEX_op_ppc_mulou_vec: 4265 case INDEX_op_ppc_pkum_vec: 4266 case INDEX_op_dup2_vec: 4267 return C_O1_I2(v, v, v); 4268 4269 case INDEX_op_not_vec: 4270 case INDEX_op_neg_vec: 4271 return C_O1_I1(v, v); 4272 4273 case INDEX_op_dup_vec: 4274 return have_isa_3_00 ? C_O1_I1(v, vr) : C_O1_I1(v, v); 4275 4276 case INDEX_op_ld_vec: 4277 case INDEX_op_dupm_vec: 4278 return C_O1_I1(v, r); 4279 4280 case INDEX_op_st_vec: 4281 return C_O0_I2(v, r); 4282 4283 case INDEX_op_bitsel_vec: 4284 case INDEX_op_ppc_msum_vec: 4285 return C_O1_I3(v, v, v, v); 4286 case INDEX_op_cmpsel_vec: 4287 return C_O1_I4(v, v, v, vZM, v); 4288 4289 default: 4290 return C_NotImplemented; 4291 } 4292} 4293 4294static void tcg_target_init(TCGContext *s) 4295{ 4296 tcg_target_available_regs[TCG_TYPE_I32] = 0xffffffff; 4297 tcg_target_available_regs[TCG_TYPE_I64] = 0xffffffff; 4298 if (have_altivec) { 4299 tcg_target_available_regs[TCG_TYPE_V64] = 0xffffffff00000000ull; 4300 tcg_target_available_regs[TCG_TYPE_V128] = 0xffffffff00000000ull; 4301 } 4302 4303 tcg_target_call_clobber_regs = 0; 4304 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R0); 4305 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R2); 4306 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R3); 4307 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R4); 4308 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R5); 4309 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R6); 4310 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R7); 4311 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R8); 4312 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R9); 4313 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R10); 4314 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R11); 4315 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_R12); 4316 4317 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V0); 4318 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V1); 4319 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V2); 4320 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V3); 4321 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V4); 4322 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V5); 4323 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V6); 4324 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V7); 4325 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V8); 4326 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V9); 4327 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V10); 4328 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V11); 4329 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V12); 4330 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V13); 4331 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V14); 4332 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V15); 4333 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V16); 4334 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V17); 4335 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V18); 4336 tcg_regset_set_reg(tcg_target_call_clobber_regs, TCG_REG_V19); 4337 4338 s->reserved_regs = 0; 4339 tcg_regset_set_reg(s->reserved_regs, TCG_REG_R0); /* tcg temp */ 4340 tcg_regset_set_reg(s->reserved_regs, TCG_REG_R1); /* stack pointer */ 4341#if defined(_CALL_SYSV) 4342 tcg_regset_set_reg(s->reserved_regs, TCG_REG_R2); /* toc pointer */ 4343#endif 4344#if defined(_CALL_SYSV) || TCG_TARGET_REG_BITS == 64 4345 tcg_regset_set_reg(s->reserved_regs, TCG_REG_R13); /* thread pointer */ 4346#endif 4347 tcg_regset_set_reg(s->reserved_regs, TCG_REG_TMP1); 4348 tcg_regset_set_reg(s->reserved_regs, TCG_REG_TMP2); 4349 tcg_regset_set_reg(s->reserved_regs, TCG_VEC_TMP1); 4350 tcg_regset_set_reg(s->reserved_regs, TCG_VEC_TMP2); 4351 if (USE_REG_TB) { 4352 tcg_regset_set_reg(s->reserved_regs, TCG_REG_TB); /* tb->tc_ptr */ 4353 } 4354} 4355 4356#ifdef __ELF__ 4357typedef struct { 4358 DebugFrameCIE cie; 4359 DebugFrameFDEHeader fde; 4360 uint8_t fde_def_cfa[4]; 4361 uint8_t fde_reg_ofs[ARRAY_SIZE(tcg_target_callee_save_regs) * 2 + 3]; 4362} DebugFrame; 4363 4364/* We're expecting a 2 byte uleb128 encoded value. */ 4365QEMU_BUILD_BUG_ON(FRAME_SIZE >= (1 << 14)); 4366 4367#if TCG_TARGET_REG_BITS == 64 4368# define ELF_HOST_MACHINE EM_PPC64 4369#else 4370# define ELF_HOST_MACHINE EM_PPC 4371#endif 4372 4373static DebugFrame debug_frame = { 4374 .cie.len = sizeof(DebugFrameCIE)-4, /* length after .len member */ 4375 .cie.id = -1, 4376 .cie.version = 1, 4377 .cie.code_align = 1, 4378 .cie.data_align = (-SZR & 0x7f), /* sleb128 -SZR */ 4379 .cie.return_column = 65, 4380 4381 /* Total FDE size does not include the "len" member. */ 4382 .fde.len = sizeof(DebugFrame) - offsetof(DebugFrame, fde.cie_offset), 4383 4384 .fde_def_cfa = { 4385 12, TCG_REG_R1, /* DW_CFA_def_cfa r1, ... */ 4386 (FRAME_SIZE & 0x7f) | 0x80, /* ... uleb128 FRAME_SIZE */ 4387 (FRAME_SIZE >> 7) 4388 }, 4389 .fde_reg_ofs = { 4390 /* DW_CFA_offset_extended_sf, lr, LR_OFFSET */ 4391 0x11, 65, (LR_OFFSET / -SZR) & 0x7f, 4392 } 4393}; 4394 4395void tcg_register_jit(const void *buf, size_t buf_size) 4396{ 4397 uint8_t *p = &debug_frame.fde_reg_ofs[3]; 4398 int i; 4399 4400 for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); ++i, p += 2) { 4401 p[0] = 0x80 + tcg_target_callee_save_regs[i]; 4402 p[1] = (FRAME_SIZE - (REG_SAVE_BOT + i * SZR)) / SZR; 4403 } 4404 4405 debug_frame.fde.func_start = (uintptr_t)buf; 4406 debug_frame.fde.func_len = buf_size; 4407 4408 tcg_register_jit_int(buf, buf_size, &debug_frame, sizeof(debug_frame)); 4409} 4410#endif /* __ELF__ */ 4411#undef VMULEUB 4412#undef VMULEUH 4413#undef VMULEUW 4414#undef VMULOUB 4415#undef VMULOUH 4416#undef VMULOUW 4417#undef VMSUMUHM 4418