1 #ifndef TARGET_ARM_TRANSLATE_H 2 #define TARGET_ARM_TRANSLATE_H 3 4 #include "cpu.h" 5 #include "tcg/tcg-op.h" 6 #include "tcg/tcg-op-gvec.h" 7 #include "exec/exec-all.h" 8 #include "exec/translator.h" 9 #include "exec/helper-gen.h" 10 #include "internals.h" 11 #include "cpu-features.h" 12 13 /* internal defines */ 14 15 /* 16 * Save pc_save across a branch, so that we may restore the value from 17 * before the branch at the point the label is emitted. 18 */ 19 typedef struct DisasLabel { 20 TCGLabel *label; 21 target_ulong pc_save; 22 } DisasLabel; 23 24 typedef struct DisasContext { 25 DisasContextBase base; 26 const ARMISARegisters *isar; 27 28 /* The address of the current instruction being translated. */ 29 target_ulong pc_curr; 30 /* 31 * For CF_PCREL, the full value of cpu_pc is not known 32 * (although the page offset is known). For convenience, the 33 * translation loop uses the full virtual address that triggered 34 * the translation, from base.pc_start through pc_curr. 35 * For efficiency, we do not update cpu_pc for every instruction. 36 * Instead, pc_save has the value of pc_curr at the time of the 37 * last update to cpu_pc, which allows us to compute the addend 38 * needed to bring cpu_pc current: pc_curr - pc_save. 39 * If cpu_pc now contains the destination of an indirect branch, 40 * pc_save contains -1 to indicate that relative updates are no 41 * longer possible. 42 */ 43 target_ulong pc_save; 44 target_ulong page_start; 45 uint32_t insn; 46 /* Nonzero if this instruction has been conditionally skipped. */ 47 int condjmp; 48 /* The label that will be jumped to when the instruction is skipped. */ 49 DisasLabel condlabel; 50 /* Thumb-2 conditional execution bits. */ 51 int condexec_mask; 52 int condexec_cond; 53 /* M-profile ECI/ICI exception-continuable instruction state */ 54 int eci; 55 /* 56 * trans_ functions for insns which are continuable should set this true 57 * after decode (ie after any UNDEF checks) 58 */ 59 bool eci_handled; 60 int sctlr_b; 61 MemOp be_data; 62 #if !defined(CONFIG_USER_ONLY) 63 int user; 64 #endif 65 ARMMMUIdx mmu_idx; /* MMU index to use for normal loads/stores */ 66 uint8_t tbii; /* TBI1|TBI0 for insns */ 67 uint8_t tbid; /* TBI1|TBI0 for data */ 68 uint8_t tcma; /* TCMA1|TCMA0 for MTE */ 69 bool ns; /* Use non-secure CPREG bank on access */ 70 int fp_excp_el; /* FP exception EL or 0 if enabled */ 71 int sve_excp_el; /* SVE exception EL or 0 if enabled */ 72 int sme_excp_el; /* SME exception EL or 0 if enabled */ 73 int vl; /* current vector length in bytes */ 74 int svl; /* current streaming vector length in bytes */ 75 bool vfp_enabled; /* FP enabled via FPSCR.EN */ 76 int vec_len; 77 int vec_stride; 78 bool v7m_handler_mode; 79 bool v8m_secure; /* true if v8M and we're in Secure mode */ 80 bool v8m_stackcheck; /* true if we need to perform v8M stack limit checks */ 81 bool v8m_fpccr_s_wrong; /* true if v8M FPCCR.S != v8m_secure */ 82 bool v7m_new_fp_ctxt_needed; /* ASPEN set but no active FP context */ 83 bool v7m_lspact; /* FPCCR.LSPACT set */ 84 /* Immediate value in AArch32 SVC insn; must be set if is_jmp == DISAS_SWI 85 * so that top level loop can generate correct syndrome information. 86 */ 87 uint32_t svc_imm; 88 int current_el; 89 GHashTable *cp_regs; 90 uint64_t features; /* CPU features bits */ 91 bool aarch64; 92 bool thumb; 93 bool lse2; 94 /* Because unallocated encodings generate different exception syndrome 95 * information from traps due to FP being disabled, we can't do a single 96 * "is fp access disabled" check at a high level in the decode tree. 97 * To help in catching bugs where the access check was forgotten in some 98 * code path, we set this flag when the access check is done, and assert 99 * that it is set at the point where we actually touch the FP regs. 100 */ 101 bool fp_access_checked; 102 bool sve_access_checked; 103 /* ARMv8 single-step state (this is distinct from the QEMU gdbstub 104 * single-step support). 105 */ 106 bool ss_active; 107 bool pstate_ss; 108 /* True if the insn just emitted was a load-exclusive instruction 109 * (necessary for syndrome information for single step exceptions), 110 * ie A64 LDX*, LDAX*, A32/T32 LDREX*, LDAEX*. 111 */ 112 bool is_ldex; 113 /* True if AccType_UNPRIV should be used for LDTR et al */ 114 bool unpriv; 115 /* True if v8.3-PAuth is active. */ 116 bool pauth_active; 117 /* True if v8.5-MTE access to tags is enabled; index with is_unpriv. */ 118 bool ata[2]; 119 /* True if v8.5-MTE tag checks affect the PE; index with is_unpriv. */ 120 bool mte_active[2]; 121 /* True with v8.5-BTI and SCTLR_ELx.BT* set. */ 122 bool bt; 123 /* True if any CP15 access is trapped by HSTR_EL2 */ 124 bool hstr_active; 125 /* True if memory operations require alignment */ 126 bool align_mem; 127 /* True if PSTATE.IL is set */ 128 bool pstate_il; 129 /* True if PSTATE.SM is set. */ 130 bool pstate_sm; 131 /* True if PSTATE.ZA is set. */ 132 bool pstate_za; 133 /* True if non-streaming insns should raise an SME Streaming exception. */ 134 bool sme_trap_nonstreaming; 135 /* True if the current instruction is non-streaming. */ 136 bool is_nonstreaming; 137 /* True if MVE insns are definitely not predicated by VPR or LTPSIZE */ 138 bool mve_no_pred; 139 /* True if fine-grained traps are active */ 140 bool fgt_active; 141 /* True if fine-grained trap on SVC is enabled */ 142 bool fgt_svc; 143 /* True if a trap on ERET is enabled (FGT or NV) */ 144 bool trap_eret; 145 /* True if FEAT_LSE2 SCTLR_ELx.nAA is set */ 146 bool naa; 147 /* True if FEAT_NV HCR_EL2.NV is enabled */ 148 bool nv; 149 /* True if NV enabled and HCR_EL2.NV1 is set */ 150 bool nv1; 151 /* True if NV enabled and HCR_EL2.NV2 is set */ 152 bool nv2; 153 /* True if NV2 enabled and NV2 RAM accesses use EL2&0 translation regime */ 154 bool nv2_mem_e20; 155 /* True if NV2 enabled and NV2 RAM accesses are big-endian */ 156 bool nv2_mem_be; 157 /* 158 * >= 0, a copy of PSTATE.BTYPE, which will be 0 without v8.5-BTI. 159 * < 0, set by the current instruction. 160 */ 161 int8_t btype; 162 /* A copy of cpu->dcz_blocksize. */ 163 uint8_t dcz_blocksize; 164 /* A copy of cpu->gm_blocksize. */ 165 uint8_t gm_blocksize; 166 /* True if the current insn_start has been updated. */ 167 bool insn_start_updated; 168 /* Bottom two bits of XScale c15_cpar coprocessor access control reg */ 169 int c15_cpar; 170 /* Offset from VNCR_EL2 when FEAT_NV2 redirects this reg to memory */ 171 uint32_t nv2_redirect_offset; 172 } DisasContext; 173 174 typedef struct DisasCompare { 175 TCGCond cond; 176 TCGv_i32 value; 177 } DisasCompare; 178 179 /* Share the TCG temporaries common between 32 and 64 bit modes. */ 180 extern TCGv_i32 cpu_NF, cpu_ZF, cpu_CF, cpu_VF; 181 extern TCGv_i64 cpu_exclusive_addr; 182 extern TCGv_i64 cpu_exclusive_val; 183 184 /* 185 * Constant expanders for the decoders. 186 */ 187 188 static inline int negate(DisasContext *s, int x) 189 { 190 return -x; 191 } 192 193 static inline int plus_1(DisasContext *s, int x) 194 { 195 return x + 1; 196 } 197 198 static inline int plus_2(DisasContext *s, int x) 199 { 200 return x + 2; 201 } 202 203 static inline int plus_12(DisasContext *s, int x) 204 { 205 return x + 12; 206 } 207 208 static inline int times_2(DisasContext *s, int x) 209 { 210 return x * 2; 211 } 212 213 static inline int times_4(DisasContext *s, int x) 214 { 215 return x * 4; 216 } 217 218 static inline int times_8(DisasContext *s, int x) 219 { 220 return x * 8; 221 } 222 223 static inline int times_2_plus_1(DisasContext *s, int x) 224 { 225 return x * 2 + 1; 226 } 227 228 static inline int rsub_64(DisasContext *s, int x) 229 { 230 return 64 - x; 231 } 232 233 static inline int rsub_32(DisasContext *s, int x) 234 { 235 return 32 - x; 236 } 237 238 static inline int rsub_16(DisasContext *s, int x) 239 { 240 return 16 - x; 241 } 242 243 static inline int rsub_8(DisasContext *s, int x) 244 { 245 return 8 - x; 246 } 247 248 static inline int shl_12(DisasContext *s, int x) 249 { 250 return x << 12; 251 } 252 253 static inline int xor_2(DisasContext *s, int x) 254 { 255 return x ^ 2; 256 } 257 258 static inline int neon_3same_fp_size(DisasContext *s, int x) 259 { 260 /* Convert 0==fp32, 1==fp16 into a MO_* value */ 261 return MO_32 - x; 262 } 263 264 static inline int arm_dc_feature(DisasContext *dc, int feature) 265 { 266 return (dc->features & (1ULL << feature)) != 0; 267 } 268 269 static inline int get_mem_index(DisasContext *s) 270 { 271 return arm_to_core_mmu_idx(s->mmu_idx); 272 } 273 274 static inline void disas_set_insn_syndrome(DisasContext *s, uint32_t syn) 275 { 276 /* We don't need to save all of the syndrome so we mask and shift 277 * out unneeded bits to help the sleb128 encoder do a better job. 278 */ 279 syn &= ARM_INSN_START_WORD2_MASK; 280 syn >>= ARM_INSN_START_WORD2_SHIFT; 281 282 /* Check for multiple updates. */ 283 assert(!s->insn_start_updated); 284 s->insn_start_updated = true; 285 tcg_set_insn_start_param(s->base.insn_start, 2, syn); 286 } 287 288 static inline int curr_insn_len(DisasContext *s) 289 { 290 return s->base.pc_next - s->pc_curr; 291 } 292 293 /* is_jmp field values */ 294 #define DISAS_JUMP DISAS_TARGET_0 /* only pc was modified dynamically */ 295 /* CPU state was modified dynamically; exit to main loop for interrupts. */ 296 #define DISAS_UPDATE_EXIT DISAS_TARGET_1 297 /* These instructions trap after executing, so the A32/T32 decoder must 298 * defer them until after the conditional execution state has been updated. 299 * WFI also needs special handling when single-stepping. 300 */ 301 #define DISAS_WFI DISAS_TARGET_2 302 #define DISAS_SWI DISAS_TARGET_3 303 /* WFE */ 304 #define DISAS_WFE DISAS_TARGET_4 305 #define DISAS_HVC DISAS_TARGET_5 306 #define DISAS_SMC DISAS_TARGET_6 307 #define DISAS_YIELD DISAS_TARGET_7 308 /* M profile branch which might be an exception return (and so needs 309 * custom end-of-TB code) 310 */ 311 #define DISAS_BX_EXCRET DISAS_TARGET_8 312 /* 313 * For instructions which want an immediate exit to the main loop, as opposed 314 * to attempting to use lookup_and_goto_ptr. Unlike DISAS_UPDATE_EXIT, this 315 * doesn't write the PC on exiting the translation loop so you need to ensure 316 * something (gen_a64_update_pc or runtime helper) has done so before we reach 317 * return from cpu_tb_exec. 318 */ 319 #define DISAS_EXIT DISAS_TARGET_9 320 /* CPU state was modified dynamically; no need to exit, but do not chain. */ 321 #define DISAS_UPDATE_NOCHAIN DISAS_TARGET_10 322 323 #ifdef TARGET_AARCH64 324 void a64_translate_init(void); 325 void gen_a64_update_pc(DisasContext *s, target_long diff); 326 extern const TranslatorOps aarch64_translator_ops; 327 #else 328 static inline void a64_translate_init(void) 329 { 330 } 331 332 static inline void gen_a64_update_pc(DisasContext *s, target_long diff) 333 { 334 } 335 #endif 336 337 void arm_test_cc(DisasCompare *cmp, int cc); 338 void arm_jump_cc(DisasCompare *cmp, TCGLabel *label); 339 void arm_gen_test_cc(int cc, TCGLabel *label); 340 MemOp pow2_align(unsigned i); 341 void unallocated_encoding(DisasContext *s); 342 void gen_exception_insn_el(DisasContext *s, target_long pc_diff, int excp, 343 uint32_t syn, uint32_t target_el); 344 void gen_exception_insn(DisasContext *s, target_long pc_diff, 345 int excp, uint32_t syn); 346 347 /* Return state of Alternate Half-precision flag, caller frees result */ 348 static inline TCGv_i32 get_ahp_flag(void) 349 { 350 TCGv_i32 ret = tcg_temp_new_i32(); 351 352 tcg_gen_ld_i32(ret, tcg_env, offsetoflow32(CPUARMState, vfp.fpcr)); 353 tcg_gen_extract_i32(ret, ret, 26, 1); 354 355 return ret; 356 } 357 358 /* Set bits within PSTATE. */ 359 static inline void set_pstate_bits(uint32_t bits) 360 { 361 TCGv_i32 p = tcg_temp_new_i32(); 362 363 tcg_debug_assert(!(bits & CACHED_PSTATE_BITS)); 364 365 tcg_gen_ld_i32(p, tcg_env, offsetof(CPUARMState, pstate)); 366 tcg_gen_ori_i32(p, p, bits); 367 tcg_gen_st_i32(p, tcg_env, offsetof(CPUARMState, pstate)); 368 } 369 370 /* Clear bits within PSTATE. */ 371 static inline void clear_pstate_bits(uint32_t bits) 372 { 373 TCGv_i32 p = tcg_temp_new_i32(); 374 375 tcg_debug_assert(!(bits & CACHED_PSTATE_BITS)); 376 377 tcg_gen_ld_i32(p, tcg_env, offsetof(CPUARMState, pstate)); 378 tcg_gen_andi_i32(p, p, ~bits); 379 tcg_gen_st_i32(p, tcg_env, offsetof(CPUARMState, pstate)); 380 } 381 382 /* If the singlestep state is Active-not-pending, advance to Active-pending. */ 383 static inline void gen_ss_advance(DisasContext *s) 384 { 385 if (s->ss_active) { 386 s->pstate_ss = 0; 387 clear_pstate_bits(PSTATE_SS); 388 } 389 } 390 391 /* Generate an architectural singlestep exception */ 392 static inline void gen_swstep_exception(DisasContext *s, int isv, int ex) 393 { 394 /* Fill in the same_el field of the syndrome in the helper. */ 395 uint32_t syn = syn_swstep(false, isv, ex); 396 gen_helper_exception_swstep(tcg_env, tcg_constant_i32(syn)); 397 } 398 399 /* 400 * Given a VFP floating point constant encoded into an 8 bit immediate in an 401 * instruction, expand it to the actual constant value of the specified 402 * size, as per the VFPExpandImm() pseudocode in the Arm ARM. 403 */ 404 uint64_t vfp_expand_imm(int size, uint8_t imm8); 405 406 static inline void gen_vfp_absh(TCGv_i32 d, TCGv_i32 s) 407 { 408 tcg_gen_andi_i32(d, s, INT16_MAX); 409 } 410 411 static inline void gen_vfp_abss(TCGv_i32 d, TCGv_i32 s) 412 { 413 tcg_gen_andi_i32(d, s, INT32_MAX); 414 } 415 416 static inline void gen_vfp_absd(TCGv_i64 d, TCGv_i64 s) 417 { 418 tcg_gen_andi_i64(d, s, INT64_MAX); 419 } 420 421 static inline void gen_vfp_negh(TCGv_i32 d, TCGv_i32 s) 422 { 423 tcg_gen_xori_i32(d, s, 1u << 15); 424 } 425 426 static inline void gen_vfp_negs(TCGv_i32 d, TCGv_i32 s) 427 { 428 tcg_gen_xori_i32(d, s, 1u << 31); 429 } 430 431 static inline void gen_vfp_negd(TCGv_i64 d, TCGv_i64 s) 432 { 433 tcg_gen_xori_i64(d, s, 1ull << 63); 434 } 435 436 /* Vector operations shared between ARM and AArch64. */ 437 void gen_gvec_ceq0(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs, 438 uint32_t opr_sz, uint32_t max_sz); 439 void gen_gvec_clt0(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs, 440 uint32_t opr_sz, uint32_t max_sz); 441 void gen_gvec_cgt0(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs, 442 uint32_t opr_sz, uint32_t max_sz); 443 void gen_gvec_cle0(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs, 444 uint32_t opr_sz, uint32_t max_sz); 445 void gen_gvec_cge0(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs, 446 uint32_t opr_sz, uint32_t max_sz); 447 448 void gen_gvec_mla(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 449 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 450 void gen_gvec_mls(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 451 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 452 453 void gen_gvec_cmtst(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 454 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 455 void gen_gvec_sshl(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 456 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 457 void gen_gvec_ushl(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 458 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 459 void gen_gvec_srshl(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 460 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 461 void gen_gvec_urshl(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 462 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 463 void gen_neon_sqshl(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 464 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 465 void gen_neon_uqshl(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 466 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 467 void gen_neon_sqrshl(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 468 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 469 void gen_neon_uqrshl(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 470 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 471 472 void gen_neon_sqshli(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 473 int64_t c, uint32_t opr_sz, uint32_t max_sz); 474 void gen_neon_uqshli(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 475 int64_t c, uint32_t opr_sz, uint32_t max_sz); 476 void gen_neon_sqshlui(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 477 int64_t c, uint32_t opr_sz, uint32_t max_sz); 478 479 void gen_gvec_shadd(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 480 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 481 void gen_gvec_uhadd(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 482 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 483 void gen_gvec_shsub(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 484 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 485 void gen_gvec_uhsub(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 486 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 487 void gen_gvec_srhadd(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 488 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 489 void gen_gvec_urhadd(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 490 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 491 492 void gen_cmtst_i64(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b); 493 void gen_ushl_i32(TCGv_i32 d, TCGv_i32 a, TCGv_i32 b); 494 void gen_sshl_i32(TCGv_i32 d, TCGv_i32 a, TCGv_i32 b); 495 void gen_ushl_i64(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b); 496 void gen_sshl_i64(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b); 497 498 void gen_uqadd_bhs(TCGv_i64 res, TCGv_i64 qc, 499 TCGv_i64 a, TCGv_i64 b, MemOp esz); 500 void gen_uqadd_d(TCGv_i64 d, TCGv_i64 q, TCGv_i64 a, TCGv_i64 b); 501 void gen_gvec_uqadd_qc(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 502 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 503 504 void gen_sqadd_bhs(TCGv_i64 res, TCGv_i64 qc, 505 TCGv_i64 a, TCGv_i64 b, MemOp esz); 506 void gen_sqadd_d(TCGv_i64 d, TCGv_i64 q, TCGv_i64 a, TCGv_i64 b); 507 void gen_gvec_sqadd_qc(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 508 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 509 510 void gen_uqsub_bhs(TCGv_i64 res, TCGv_i64 qc, 511 TCGv_i64 a, TCGv_i64 b, MemOp esz); 512 void gen_uqsub_d(TCGv_i64 d, TCGv_i64 q, TCGv_i64 a, TCGv_i64 b); 513 void gen_gvec_uqsub_qc(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 514 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 515 516 void gen_sqsub_bhs(TCGv_i64 res, TCGv_i64 qc, 517 TCGv_i64 a, TCGv_i64 b, MemOp esz); 518 void gen_sqsub_d(TCGv_i64 d, TCGv_i64 q, TCGv_i64 a, TCGv_i64 b); 519 void gen_gvec_sqsub_qc(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 520 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 521 522 void gen_gvec_sshr(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs, 523 int64_t shift, uint32_t opr_sz, uint32_t max_sz); 524 void gen_gvec_ushr(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs, 525 int64_t shift, uint32_t opr_sz, uint32_t max_sz); 526 527 void gen_gvec_ssra(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs, 528 int64_t shift, uint32_t opr_sz, uint32_t max_sz); 529 void gen_gvec_usra(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs, 530 int64_t shift, uint32_t opr_sz, uint32_t max_sz); 531 532 void gen_srshr32_i32(TCGv_i32 d, TCGv_i32 a, int32_t sh); 533 void gen_srshr64_i64(TCGv_i64 d, TCGv_i64 a, int64_t sh); 534 void gen_urshr32_i32(TCGv_i32 d, TCGv_i32 a, int32_t sh); 535 void gen_urshr64_i64(TCGv_i64 d, TCGv_i64 a, int64_t sh); 536 537 void gen_gvec_srshr(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs, 538 int64_t shift, uint32_t opr_sz, uint32_t max_sz); 539 void gen_gvec_urshr(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs, 540 int64_t shift, uint32_t opr_sz, uint32_t max_sz); 541 void gen_gvec_srsra(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs, 542 int64_t shift, uint32_t opr_sz, uint32_t max_sz); 543 void gen_gvec_ursra(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs, 544 int64_t shift, uint32_t opr_sz, uint32_t max_sz); 545 546 void gen_gvec_sri(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs, 547 int64_t shift, uint32_t opr_sz, uint32_t max_sz); 548 void gen_gvec_sli(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs, 549 int64_t shift, uint32_t opr_sz, uint32_t max_sz); 550 551 void gen_gvec_sqdmulh_qc(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 552 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 553 void gen_gvec_sqrdmulh_qc(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 554 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 555 void gen_gvec_sqrdmlah_qc(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 556 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 557 void gen_gvec_sqrdmlsh_qc(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 558 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 559 560 void gen_gvec_sabd(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 561 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 562 void gen_gvec_uabd(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 563 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 564 565 void gen_gvec_saba(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 566 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 567 void gen_gvec_uaba(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 568 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 569 570 void gen_gvec_addp(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 571 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 572 void gen_gvec_smaxp(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 573 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 574 void gen_gvec_sminp(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 575 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 576 void gen_gvec_umaxp(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 577 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 578 void gen_gvec_uminp(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs, 579 uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz); 580 581 /* 582 * Forward to the isar_feature_* tests given a DisasContext pointer. 583 */ 584 #define dc_isar_feature(name, ctx) \ 585 ({ DisasContext *ctx_ = (ctx); isar_feature_##name(ctx_->isar); }) 586 587 /* Note that the gvec expanders operate on offsets + sizes. */ 588 typedef void GVecGen2Fn(unsigned, uint32_t, uint32_t, uint32_t, uint32_t); 589 typedef void GVecGen2iFn(unsigned, uint32_t, uint32_t, int64_t, 590 uint32_t, uint32_t); 591 typedef void GVecGen3Fn(unsigned, uint32_t, uint32_t, 592 uint32_t, uint32_t, uint32_t); 593 typedef void GVecGen4Fn(unsigned, uint32_t, uint32_t, uint32_t, 594 uint32_t, uint32_t, uint32_t); 595 596 /* Function prototype for gen_ functions for calling Neon helpers */ 597 typedef void NeonGenOneOpFn(TCGv_i32, TCGv_i32); 598 typedef void NeonGenOneOpEnvFn(TCGv_i32, TCGv_ptr, TCGv_i32); 599 typedef void NeonGenTwoOpFn(TCGv_i32, TCGv_i32, TCGv_i32); 600 typedef void NeonGenTwoOpEnvFn(TCGv_i32, TCGv_ptr, TCGv_i32, TCGv_i32); 601 typedef void NeonGenThreeOpEnvFn(TCGv_i32, TCGv_env, TCGv_i32, 602 TCGv_i32, TCGv_i32); 603 typedef void NeonGenTwo64OpFn(TCGv_i64, TCGv_i64, TCGv_i64); 604 typedef void NeonGenTwo64OpEnvFn(TCGv_i64, TCGv_ptr, TCGv_i64, TCGv_i64); 605 typedef void NeonGenNarrowFn(TCGv_i32, TCGv_i64); 606 typedef void NeonGenWidenFn(TCGv_i64, TCGv_i32); 607 typedef void NeonGenTwoOpWidenFn(TCGv_i64, TCGv_i32, TCGv_i32); 608 typedef void NeonGenOneSingleOpFn(TCGv_i32, TCGv_i32, TCGv_ptr); 609 typedef void NeonGenTwoSingleOpFn(TCGv_i32, TCGv_i32, TCGv_i32, TCGv_ptr); 610 typedef void NeonGenTwoDoubleOpFn(TCGv_i64, TCGv_i64, TCGv_i64, TCGv_ptr); 611 typedef void NeonGenOne64OpFn(TCGv_i64, TCGv_i64); 612 typedef void NeonGenOne64OpEnvFn(TCGv_i64, TCGv_env, TCGv_i64); 613 typedef void CryptoTwoOpFn(TCGv_ptr, TCGv_ptr); 614 typedef void CryptoThreeOpIntFn(TCGv_ptr, TCGv_ptr, TCGv_i32); 615 typedef void CryptoThreeOpFn(TCGv_ptr, TCGv_ptr, TCGv_ptr); 616 typedef void AtomicThreeOpFn(TCGv_i64, TCGv_i64, TCGv_i64, TCGArg, MemOp); 617 typedef void WideShiftImmFn(TCGv_i64, TCGv_i64, int64_t shift); 618 typedef void WideShiftFn(TCGv_i64, TCGv_ptr, TCGv_i64, TCGv_i32); 619 typedef void ShiftImmFn(TCGv_i32, TCGv_i32, int32_t shift); 620 typedef void ShiftFn(TCGv_i32, TCGv_ptr, TCGv_i32, TCGv_i32); 621 622 /** 623 * arm_tbflags_from_tb: 624 * @tb: the TranslationBlock 625 * 626 * Extract the flag values from @tb. 627 */ 628 static inline CPUARMTBFlags arm_tbflags_from_tb(const TranslationBlock *tb) 629 { 630 return (CPUARMTBFlags){ tb->flags, tb->cs_base }; 631 } 632 633 /* 634 * Enum for argument to fpstatus_ptr(). 635 */ 636 typedef enum ARMFPStatusFlavour { 637 FPST_FPCR, 638 FPST_FPCR_F16, 639 FPST_STD, 640 FPST_STD_F16, 641 } ARMFPStatusFlavour; 642 643 /** 644 * fpstatus_ptr: return TCGv_ptr to the specified fp_status field 645 * 646 * We have multiple softfloat float_status fields in the Arm CPU state struct 647 * (see the comment in cpu.h for details). Return a TCGv_ptr which has 648 * been set up to point to the requested field in the CPU state struct. 649 * The options are: 650 * 651 * FPST_FPCR 652 * for non-FP16 operations controlled by the FPCR 653 * FPST_FPCR_F16 654 * for operations controlled by the FPCR where FPCR.FZ16 is to be used 655 * FPST_STD 656 * for A32/T32 Neon operations using the "standard FPSCR value" 657 * FPST_STD_F16 658 * as FPST_STD, but where FPCR.FZ16 is to be used 659 */ 660 static inline TCGv_ptr fpstatus_ptr(ARMFPStatusFlavour flavour) 661 { 662 TCGv_ptr statusptr = tcg_temp_new_ptr(); 663 int offset; 664 665 switch (flavour) { 666 case FPST_FPCR: 667 offset = offsetof(CPUARMState, vfp.fp_status); 668 break; 669 case FPST_FPCR_F16: 670 offset = offsetof(CPUARMState, vfp.fp_status_f16); 671 break; 672 case FPST_STD: 673 offset = offsetof(CPUARMState, vfp.standard_fp_status); 674 break; 675 case FPST_STD_F16: 676 offset = offsetof(CPUARMState, vfp.standard_fp_status_f16); 677 break; 678 default: 679 g_assert_not_reached(); 680 } 681 tcg_gen_addi_ptr(statusptr, tcg_env, offset); 682 return statusptr; 683 } 684 685 /** 686 * finalize_memop_atom: 687 * @s: DisasContext 688 * @opc: size+sign+align of the memory operation 689 * @atom: atomicity of the memory operation 690 * 691 * Build the complete MemOp for a memory operation, including alignment, 692 * endianness, and atomicity. 693 * 694 * If (op & MO_AMASK) then the operation already contains the required 695 * alignment, e.g. for AccType_ATOMIC. Otherwise, this an optionally 696 * unaligned operation, e.g. for AccType_NORMAL. 697 * 698 * In the latter case, there are configuration bits that require alignment, 699 * and this is applied here. Note that there is no way to indicate that 700 * no alignment should ever be enforced; this must be handled manually. 701 */ 702 static inline MemOp finalize_memop_atom(DisasContext *s, MemOp opc, MemOp atom) 703 { 704 if (s->align_mem && !(opc & MO_AMASK)) { 705 opc |= MO_ALIGN; 706 } 707 return opc | atom | s->be_data; 708 } 709 710 /** 711 * finalize_memop: 712 * @s: DisasContext 713 * @opc: size+sign+align of the memory operation 714 * 715 * Like finalize_memop_atom, but with default atomicity. 716 */ 717 static inline MemOp finalize_memop(DisasContext *s, MemOp opc) 718 { 719 MemOp atom = s->lse2 ? MO_ATOM_WITHIN16 : MO_ATOM_IFALIGN; 720 return finalize_memop_atom(s, opc, atom); 721 } 722 723 /** 724 * finalize_memop_pair: 725 * @s: DisasContext 726 * @opc: size+sign+align of the memory operation 727 * 728 * Like finalize_memop_atom, but with atomicity for a pair. 729 * C.f. Pseudocode for Mem[], operand ispair. 730 */ 731 static inline MemOp finalize_memop_pair(DisasContext *s, MemOp opc) 732 { 733 MemOp atom = s->lse2 ? MO_ATOM_WITHIN16_PAIR : MO_ATOM_IFALIGN_PAIR; 734 return finalize_memop_atom(s, opc, atom); 735 } 736 737 /** 738 * finalize_memop_asimd: 739 * @s: DisasContext 740 * @opc: size+sign+align of the memory operation 741 * 742 * Like finalize_memop_atom, but with atomicity of AccessType_ASIMD. 743 */ 744 static inline MemOp finalize_memop_asimd(DisasContext *s, MemOp opc) 745 { 746 /* 747 * In the pseudocode for Mem[], with AccessType_ASIMD, size == 16, 748 * if IsAligned(8), the first case provides separate atomicity for 749 * the pair of 64-bit accesses. If !IsAligned(8), the middle cases 750 * do not apply, and we're left with the final case of no atomicity. 751 * Thus MO_ATOM_IFALIGN_PAIR. 752 * 753 * For other sizes, normal LSE2 rules apply. 754 */ 755 if ((opc & MO_SIZE) == MO_128) { 756 return finalize_memop_atom(s, opc, MO_ATOM_IFALIGN_PAIR); 757 } 758 return finalize_memop(s, opc); 759 } 760 761 /** 762 * asimd_imm_const: Expand an encoded SIMD constant value 763 * 764 * Expand a SIMD constant value. This is essentially the pseudocode 765 * AdvSIMDExpandImm, except that we also perform the boolean NOT needed for 766 * VMVN and VBIC (when cmode < 14 && op == 1). 767 * 768 * The combination cmode == 15 op == 1 is a reserved encoding for AArch32; 769 * callers must catch this; we return the 64-bit constant value defined 770 * for AArch64. 771 * 772 * cmode = 2,3,4,5,6,7,10,11,12,13 imm=0 was UNPREDICTABLE in v7A but 773 * is either not unpredictable or merely CONSTRAINED UNPREDICTABLE in v8A; 774 * we produce an immediate constant value of 0 in these cases. 775 */ 776 uint64_t asimd_imm_const(uint32_t imm, int cmode, int op); 777 778 /* 779 * gen_disas_label: 780 * Create a label and cache a copy of pc_save. 781 */ 782 static inline DisasLabel gen_disas_label(DisasContext *s) 783 { 784 return (DisasLabel){ 785 .label = gen_new_label(), 786 .pc_save = s->pc_save, 787 }; 788 } 789 790 /* 791 * set_disas_label: 792 * Emit a label and restore the cached copy of pc_save. 793 */ 794 static inline void set_disas_label(DisasContext *s, DisasLabel l) 795 { 796 gen_set_label(l.label); 797 s->pc_save = l.pc_save; 798 } 799 800 static inline TCGv_ptr gen_lookup_cp_reg(uint32_t key) 801 { 802 TCGv_ptr ret = tcg_temp_new_ptr(); 803 gen_helper_lookup_cp_reg(ret, tcg_env, tcg_constant_i32(key)); 804 return ret; 805 } 806 807 /* 808 * Set and reset rounding mode around another operation. 809 */ 810 static inline TCGv_i32 gen_set_rmode(ARMFPRounding rmode, TCGv_ptr fpst) 811 { 812 TCGv_i32 new = tcg_constant_i32(arm_rmode_to_sf(rmode)); 813 TCGv_i32 old = tcg_temp_new_i32(); 814 815 gen_helper_set_rmode(old, new, fpst); 816 return old; 817 } 818 819 static inline void gen_restore_rmode(TCGv_i32 old, TCGv_ptr fpst) 820 { 821 gen_helper_set_rmode(old, old, fpst); 822 } 823 824 /* 825 * Helpers for implementing sets of trans_* functions. 826 * Defer the implementation of NAME to FUNC, with optional extra arguments. 827 */ 828 #define TRANS(NAME, FUNC, ...) \ 829 static bool trans_##NAME(DisasContext *s, arg_##NAME *a) \ 830 { return FUNC(s, __VA_ARGS__); } 831 #define TRANS_FEAT(NAME, FEAT, FUNC, ...) \ 832 static bool trans_##NAME(DisasContext *s, arg_##NAME *a) \ 833 { return dc_isar_feature(FEAT, s) && FUNC(s, __VA_ARGS__); } 834 835 #define TRANS_FEAT_NONSTREAMING(NAME, FEAT, FUNC, ...) \ 836 static bool trans_##NAME(DisasContext *s, arg_##NAME *a) \ 837 { \ 838 s->is_nonstreaming = true; \ 839 return dc_isar_feature(FEAT, s) && FUNC(s, __VA_ARGS__); \ 840 } 841 842 #endif /* TARGET_ARM_TRANSLATE_H */ 843