1 /* 2 * QEMU MIPS CPU 3 * 4 * Copyright (c) 2012 SUSE LINUX Products GmbH 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, see 18 * <http://www.gnu.org/licenses/lgpl-2.1.html> 19 */ 20 21 #include "qemu/osdep.h" 22 #include "qemu/cutils.h" 23 #include "qemu/qemu-print.h" 24 #include "qemu/error-report.h" 25 #include "qapi/error.h" 26 #include "cpu.h" 27 #include "internal.h" 28 #include "kvm_mips.h" 29 #include "qemu/module.h" 30 #include "sysemu/kvm.h" 31 #include "sysemu/qtest.h" 32 #include "exec/exec-all.h" 33 #include "hw/qdev-properties.h" 34 #include "hw/qdev-clock.h" 35 #include "semihosting/semihost.h" 36 #include "fpu_helper.h" 37 38 const char regnames[32][3] = { 39 "r0", "at", "v0", "v1", "a0", "a1", "a2", "a3", 40 "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", 41 "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7", 42 "t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra", 43 }; 44 45 static void fpu_dump_fpr(fpr_t *fpr, FILE *f, bool is_fpu64) 46 { 47 if (is_fpu64) { 48 qemu_fprintf(f, "w:%08x d:%016" PRIx64 " fd:%13g fs:%13g psu: %13g\n", 49 fpr->w[FP_ENDIAN_IDX], fpr->d, 50 (double)fpr->fd, 51 (double)fpr->fs[FP_ENDIAN_IDX], 52 (double)fpr->fs[!FP_ENDIAN_IDX]); 53 } else { 54 fpr_t tmp; 55 56 tmp.w[FP_ENDIAN_IDX] = fpr->w[FP_ENDIAN_IDX]; 57 tmp.w[!FP_ENDIAN_IDX] = (fpr + 1)->w[FP_ENDIAN_IDX]; 58 qemu_fprintf(f, "w:%08x d:%016" PRIx64 " fd:%13g fs:%13g psu:%13g\n", 59 tmp.w[FP_ENDIAN_IDX], tmp.d, 60 (double)tmp.fd, 61 (double)tmp.fs[FP_ENDIAN_IDX], 62 (double)tmp.fs[!FP_ENDIAN_IDX]); 63 } 64 } 65 66 static void fpu_dump_state(CPUMIPSState *env, FILE *f, int flags) 67 { 68 int i; 69 bool is_fpu64 = !!(env->hflags & MIPS_HFLAG_F64); 70 71 qemu_fprintf(f, 72 "CP1 FCR0 0x%08x FCR31 0x%08x SR.FR %d fp_status 0x%02x\n", 73 env->active_fpu.fcr0, env->active_fpu.fcr31, is_fpu64, 74 get_float_exception_flags(&env->active_fpu.fp_status)); 75 for (i = 0; i < 32; (is_fpu64) ? i++ : (i += 2)) { 76 qemu_fprintf(f, "%3s: ", fregnames[i]); 77 fpu_dump_fpr(&env->active_fpu.fpr[i], f, is_fpu64); 78 } 79 } 80 81 static void mips_cpu_dump_state(CPUState *cs, FILE *f, int flags) 82 { 83 MIPSCPU *cpu = MIPS_CPU(cs); 84 CPUMIPSState *env = &cpu->env; 85 int i; 86 87 qemu_fprintf(f, "pc=0x" TARGET_FMT_lx " HI=0x" TARGET_FMT_lx 88 " LO=0x" TARGET_FMT_lx " ds %04x " 89 TARGET_FMT_lx " " TARGET_FMT_ld "\n", 90 env->active_tc.PC, env->active_tc.HI[0], env->active_tc.LO[0], 91 env->hflags, env->btarget, env->bcond); 92 for (i = 0; i < 32; i++) { 93 if ((i & 3) == 0) { 94 qemu_fprintf(f, "GPR%02d:", i); 95 } 96 qemu_fprintf(f, " %s " TARGET_FMT_lx, 97 regnames[i], env->active_tc.gpr[i]); 98 if ((i & 3) == 3) { 99 qemu_fprintf(f, "\n"); 100 } 101 } 102 103 qemu_fprintf(f, "CP0 Status 0x%08x Cause 0x%08x EPC 0x" 104 TARGET_FMT_lx "\n", 105 env->CP0_Status, env->CP0_Cause, env->CP0_EPC); 106 qemu_fprintf(f, " Config0 0x%08x Config1 0x%08x LLAddr 0x%016" 107 PRIx64 "\n", 108 env->CP0_Config0, env->CP0_Config1, env->CP0_LLAddr); 109 qemu_fprintf(f, " Config2 0x%08x Config3 0x%08x\n", 110 env->CP0_Config2, env->CP0_Config3); 111 qemu_fprintf(f, " Config4 0x%08x Config5 0x%08x\n", 112 env->CP0_Config4, env->CP0_Config5); 113 if ((flags & CPU_DUMP_FPU) && (env->hflags & MIPS_HFLAG_FPU)) { 114 fpu_dump_state(env, f, flags); 115 } 116 } 117 118 void cpu_set_exception_base(int vp_index, target_ulong address) 119 { 120 MIPSCPU *vp = MIPS_CPU(qemu_get_cpu(vp_index)); 121 vp->env.exception_base = address; 122 } 123 124 static void mips_cpu_set_pc(CPUState *cs, vaddr value) 125 { 126 MIPSCPU *cpu = MIPS_CPU(cs); 127 128 mips_env_set_pc(&cpu->env, value); 129 } 130 131 static vaddr mips_cpu_get_pc(CPUState *cs) 132 { 133 MIPSCPU *cpu = MIPS_CPU(cs); 134 135 return cpu->env.active_tc.PC; 136 } 137 138 static bool mips_cpu_has_work(CPUState *cs) 139 { 140 MIPSCPU *cpu = MIPS_CPU(cs); 141 CPUMIPSState *env = &cpu->env; 142 bool has_work = false; 143 144 /* 145 * Prior to MIPS Release 6 it is implementation dependent if non-enabled 146 * interrupts wake-up the CPU, however most of the implementations only 147 * check for interrupts that can be taken. For pre-release 6 CPUs, 148 * check for CP0 Config7 'Wait IE ignore' bit. 149 */ 150 if ((cs->interrupt_request & CPU_INTERRUPT_HARD) && 151 cpu_mips_hw_interrupts_pending(env)) { 152 if (cpu_mips_hw_interrupts_enabled(env) || 153 (env->CP0_Config7 & (1 << CP0C7_WII)) || 154 (env->insn_flags & ISA_MIPS_R6)) { 155 has_work = true; 156 } 157 } 158 159 /* MIPS-MT has the ability to halt the CPU. */ 160 if (ase_mt_available(env)) { 161 /* 162 * The QEMU model will issue an _WAKE request whenever the CPUs 163 * should be woken up. 164 */ 165 if (cs->interrupt_request & CPU_INTERRUPT_WAKE) { 166 has_work = true; 167 } 168 169 if (!mips_vpe_active(env)) { 170 has_work = false; 171 } 172 } 173 /* MIPS Release 6 has the ability to halt the CPU. */ 174 if (env->CP0_Config5 & (1 << CP0C5_VP)) { 175 if (cs->interrupt_request & CPU_INTERRUPT_WAKE) { 176 has_work = true; 177 } 178 if (!mips_vp_active(env)) { 179 has_work = false; 180 } 181 } 182 return has_work; 183 } 184 185 #include "cpu-defs.c.inc" 186 187 static void mips_cpu_reset_hold(Object *obj) 188 { 189 CPUState *cs = CPU(obj); 190 MIPSCPU *cpu = MIPS_CPU(cs); 191 MIPSCPUClass *mcc = MIPS_CPU_GET_CLASS(cpu); 192 CPUMIPSState *env = &cpu->env; 193 194 if (mcc->parent_phases.hold) { 195 mcc->parent_phases.hold(obj); 196 } 197 198 memset(env, 0, offsetof(CPUMIPSState, end_reset_fields)); 199 200 /* Reset registers to their default values */ 201 env->CP0_PRid = env->cpu_model->CP0_PRid; 202 env->CP0_Config0 = env->cpu_model->CP0_Config0; 203 #if TARGET_BIG_ENDIAN 204 env->CP0_Config0 |= (1 << CP0C0_BE); 205 #endif 206 env->CP0_Config1 = env->cpu_model->CP0_Config1; 207 env->CP0_Config2 = env->cpu_model->CP0_Config2; 208 env->CP0_Config3 = env->cpu_model->CP0_Config3; 209 env->CP0_Config4 = env->cpu_model->CP0_Config4; 210 env->CP0_Config4_rw_bitmask = env->cpu_model->CP0_Config4_rw_bitmask; 211 env->CP0_Config5 = env->cpu_model->CP0_Config5; 212 env->CP0_Config5_rw_bitmask = env->cpu_model->CP0_Config5_rw_bitmask; 213 env->CP0_Config6 = env->cpu_model->CP0_Config6; 214 env->CP0_Config6_rw_bitmask = env->cpu_model->CP0_Config6_rw_bitmask; 215 env->CP0_Config7 = env->cpu_model->CP0_Config7; 216 env->CP0_Config7_rw_bitmask = env->cpu_model->CP0_Config7_rw_bitmask; 217 env->CP0_LLAddr_rw_bitmask = env->cpu_model->CP0_LLAddr_rw_bitmask 218 << env->cpu_model->CP0_LLAddr_shift; 219 env->CP0_LLAddr_shift = env->cpu_model->CP0_LLAddr_shift; 220 env->SYNCI_Step = env->cpu_model->SYNCI_Step; 221 env->CCRes = env->cpu_model->CCRes; 222 env->CP0_Status_rw_bitmask = env->cpu_model->CP0_Status_rw_bitmask; 223 env->CP0_TCStatus_rw_bitmask = env->cpu_model->CP0_TCStatus_rw_bitmask; 224 env->CP0_SRSCtl = env->cpu_model->CP0_SRSCtl; 225 env->current_tc = 0; 226 env->SEGBITS = env->cpu_model->SEGBITS; 227 env->SEGMask = (target_ulong)((1ULL << env->cpu_model->SEGBITS) - 1); 228 #if defined(TARGET_MIPS64) 229 if (env->cpu_model->insn_flags & ISA_MIPS3) { 230 env->SEGMask |= 3ULL << 62; 231 } 232 #endif 233 env->PABITS = env->cpu_model->PABITS; 234 env->CP0_SRSConf0_rw_bitmask = env->cpu_model->CP0_SRSConf0_rw_bitmask; 235 env->CP0_SRSConf0 = env->cpu_model->CP0_SRSConf0; 236 env->CP0_SRSConf1_rw_bitmask = env->cpu_model->CP0_SRSConf1_rw_bitmask; 237 env->CP0_SRSConf1 = env->cpu_model->CP0_SRSConf1; 238 env->CP0_SRSConf2_rw_bitmask = env->cpu_model->CP0_SRSConf2_rw_bitmask; 239 env->CP0_SRSConf2 = env->cpu_model->CP0_SRSConf2; 240 env->CP0_SRSConf3_rw_bitmask = env->cpu_model->CP0_SRSConf3_rw_bitmask; 241 env->CP0_SRSConf3 = env->cpu_model->CP0_SRSConf3; 242 env->CP0_SRSConf4_rw_bitmask = env->cpu_model->CP0_SRSConf4_rw_bitmask; 243 env->CP0_SRSConf4 = env->cpu_model->CP0_SRSConf4; 244 env->CP0_PageGrain_rw_bitmask = env->cpu_model->CP0_PageGrain_rw_bitmask; 245 env->CP0_PageGrain = env->cpu_model->CP0_PageGrain; 246 env->CP0_EBaseWG_rw_bitmask = env->cpu_model->CP0_EBaseWG_rw_bitmask; 247 env->lcsr_cpucfg1 = env->cpu_model->lcsr_cpucfg1; 248 env->lcsr_cpucfg2 = env->cpu_model->lcsr_cpucfg2; 249 env->active_fpu.fcr0 = env->cpu_model->CP1_fcr0; 250 env->active_fpu.fcr31_rw_bitmask = env->cpu_model->CP1_fcr31_rw_bitmask; 251 env->active_fpu.fcr31 = env->cpu_model->CP1_fcr31; 252 env->msair = env->cpu_model->MSAIR; 253 env->insn_flags = env->cpu_model->insn_flags; 254 255 #if defined(CONFIG_USER_ONLY) 256 env->CP0_Status = (MIPS_HFLAG_UM << CP0St_KSU); 257 # ifdef TARGET_MIPS64 258 /* Enable 64-bit register mode. */ 259 env->CP0_Status |= (1 << CP0St_PX); 260 # endif 261 # ifdef TARGET_ABI_MIPSN64 262 /* Enable 64-bit address mode. */ 263 env->CP0_Status |= (1 << CP0St_UX); 264 # endif 265 /* 266 * Enable access to the CPUNum, SYNCI_Step, CC, and CCRes RDHWR 267 * hardware registers. 268 */ 269 env->CP0_HWREna |= 0x0000000F; 270 if (env->CP0_Config1 & (1 << CP0C1_FP)) { 271 env->CP0_Status |= (1 << CP0St_CU1); 272 } 273 if (env->CP0_Config3 & (1 << CP0C3_DSPP)) { 274 env->CP0_Status |= (1 << CP0St_MX); 275 } 276 # if defined(TARGET_MIPS64) 277 /* For MIPS64, init FR bit to 1 if FPU unit is there and bit is writable. */ 278 if ((env->CP0_Config1 & (1 << CP0C1_FP)) && 279 (env->CP0_Status_rw_bitmask & (1 << CP0St_FR))) { 280 env->CP0_Status |= (1 << CP0St_FR); 281 } 282 # endif 283 #else /* !CONFIG_USER_ONLY */ 284 if (env->hflags & MIPS_HFLAG_BMASK) { 285 /* 286 * If the exception was raised from a delay slot, 287 * come back to the jump. 288 */ 289 env->CP0_ErrorEPC = (env->active_tc.PC 290 - (env->hflags & MIPS_HFLAG_B16 ? 2 : 4)); 291 } else { 292 env->CP0_ErrorEPC = env->active_tc.PC; 293 } 294 env->active_tc.PC = env->exception_base; 295 env->CP0_Random = env->tlb->nb_tlb - 1; 296 env->tlb->tlb_in_use = env->tlb->nb_tlb; 297 env->CP0_Wired = 0; 298 env->CP0_GlobalNumber = (cs->cpu_index & 0xFF) << CP0GN_VPId; 299 env->CP0_EBase = KSEG0_BASE | (cs->cpu_index & 0x3FF); 300 if (env->CP0_Config3 & (1 << CP0C3_CMGCR)) { 301 env->CP0_CMGCRBase = 0x1fbf8000 >> 4; 302 } 303 env->CP0_EntryHi_ASID_mask = (env->CP0_Config5 & (1 << CP0C5_MI)) ? 304 0x0 : (env->CP0_Config4 & (1 << CP0C4_AE)) ? 0x3ff : 0xff; 305 env->CP0_Status = (1 << CP0St_BEV) | (1 << CP0St_ERL); 306 if (env->insn_flags & INSN_LOONGSON2F) { 307 /* Loongson-2F has those bits hardcoded to 1 */ 308 env->CP0_Status |= (1 << CP0St_KX) | (1 << CP0St_SX) | 309 (1 << CP0St_UX); 310 } 311 312 /* 313 * Vectored interrupts not implemented, timer on int 7, 314 * no performance counters. 315 */ 316 env->CP0_IntCtl = 0xe0000000; 317 { 318 int i; 319 320 for (i = 0; i < 7; i++) { 321 env->CP0_WatchLo[i] = 0; 322 env->CP0_WatchHi[i] = 1 << CP0WH_M; 323 } 324 env->CP0_WatchLo[7] = 0; 325 env->CP0_WatchHi[7] = 0; 326 } 327 /* Count register increments in debug mode, EJTAG version 1 */ 328 env->CP0_Debug = (1 << CP0DB_CNT) | (0x1 << CP0DB_VER); 329 330 cpu_mips_store_count(env, 1); 331 332 if (ase_mt_available(env)) { 333 int i; 334 335 /* Only TC0 on VPE 0 starts as active. */ 336 for (i = 0; i < ARRAY_SIZE(env->tcs); i++) { 337 env->tcs[i].CP0_TCBind = cs->cpu_index << CP0TCBd_CurVPE; 338 env->tcs[i].CP0_TCHalt = 1; 339 } 340 env->active_tc.CP0_TCHalt = 1; 341 cs->halted = 1; 342 343 if (cs->cpu_index == 0) { 344 /* VPE0 starts up enabled. */ 345 env->mvp->CP0_MVPControl |= (1 << CP0MVPCo_EVP); 346 env->CP0_VPEConf0 |= (1 << CP0VPEC0_MVP) | (1 << CP0VPEC0_VPA); 347 348 /* TC0 starts up unhalted. */ 349 cs->halted = 0; 350 env->active_tc.CP0_TCHalt = 0; 351 env->tcs[0].CP0_TCHalt = 0; 352 /* With thread 0 active. */ 353 env->active_tc.CP0_TCStatus = (1 << CP0TCSt_A); 354 env->tcs[0].CP0_TCStatus = (1 << CP0TCSt_A); 355 } 356 } 357 358 /* 359 * Configure default legacy segmentation control. We use this regardless of 360 * whether segmentation control is presented to the guest. 361 */ 362 /* KSeg3 (seg0 0xE0000000..0xFFFFFFFF) */ 363 env->CP0_SegCtl0 = (CP0SC_AM_MK << CP0SC_AM); 364 /* KSeg2 (seg1 0xC0000000..0xDFFFFFFF) */ 365 env->CP0_SegCtl0 |= ((CP0SC_AM_MSK << CP0SC_AM)) << 16; 366 /* KSeg1 (seg2 0xA0000000..0x9FFFFFFF) */ 367 env->CP0_SegCtl1 = (0 << CP0SC_PA) | (CP0SC_AM_UK << CP0SC_AM) | 368 (2 << CP0SC_C); 369 /* KSeg0 (seg3 0x80000000..0x9FFFFFFF) */ 370 env->CP0_SegCtl1 |= ((0 << CP0SC_PA) | (CP0SC_AM_UK << CP0SC_AM) | 371 (3 << CP0SC_C)) << 16; 372 /* USeg (seg4 0x40000000..0x7FFFFFFF) */ 373 env->CP0_SegCtl2 = (2 << CP0SC_PA) | (CP0SC_AM_MUSK << CP0SC_AM) | 374 (1 << CP0SC_EU) | (2 << CP0SC_C); 375 /* USeg (seg5 0x00000000..0x3FFFFFFF) */ 376 env->CP0_SegCtl2 |= ((0 << CP0SC_PA) | (CP0SC_AM_MUSK << CP0SC_AM) | 377 (1 << CP0SC_EU) | (2 << CP0SC_C)) << 16; 378 /* XKPhys (note, SegCtl2.XR = 0, so XAM won't be used) */ 379 env->CP0_SegCtl1 |= (CP0SC_AM_UK << CP0SC1_XAM); 380 #endif /* !CONFIG_USER_ONLY */ 381 if ((env->insn_flags & ISA_MIPS_R6) && 382 (env->active_fpu.fcr0 & (1 << FCR0_F64))) { 383 /* Status.FR = 0 mode in 64-bit FPU not allowed in R6 */ 384 env->CP0_Status |= (1 << CP0St_FR); 385 } 386 387 if (env->insn_flags & ISA_MIPS_R6) { 388 /* PTW = 1 */ 389 env->CP0_PWSize = 0x40; 390 /* GDI = 12 */ 391 /* UDI = 12 */ 392 /* MDI = 12 */ 393 /* PRI = 12 */ 394 /* PTEI = 2 */ 395 env->CP0_PWField = 0x0C30C302; 396 } else { 397 /* GDI = 0 */ 398 /* UDI = 0 */ 399 /* MDI = 0 */ 400 /* PRI = 0 */ 401 /* PTEI = 2 */ 402 env->CP0_PWField = 0x02; 403 } 404 405 if (env->CP0_Config3 & (1 << CP0C3_ISA) & (1 << (CP0C3_ISA + 1))) { 406 /* microMIPS on reset when Config3.ISA is 3 */ 407 env->hflags |= MIPS_HFLAG_M16; 408 } 409 410 msa_reset(env); 411 412 compute_hflags(env); 413 restore_fp_status(env); 414 restore_pamask(env); 415 cs->exception_index = EXCP_NONE; 416 417 if (semihosting_get_argc()) { 418 /* UHI interface can be used to obtain argc and argv */ 419 env->active_tc.gpr[4] = -1; 420 } 421 422 #ifndef CONFIG_USER_ONLY 423 if (kvm_enabled()) { 424 kvm_mips_reset_vcpu(cpu); 425 } 426 #endif 427 } 428 429 static void mips_cpu_disas_set_info(CPUState *s, disassemble_info *info) 430 { 431 MIPSCPU *cpu = MIPS_CPU(s); 432 CPUMIPSState *env = &cpu->env; 433 434 if (!(env->insn_flags & ISA_NANOMIPS32)) { 435 #if TARGET_BIG_ENDIAN 436 info->print_insn = print_insn_big_mips; 437 #else 438 info->print_insn = print_insn_little_mips; 439 #endif 440 } else { 441 info->print_insn = print_insn_nanomips; 442 } 443 } 444 445 /* 446 * Since commit 6af0bf9c7c3 this model assumes a CPU clocked at 200MHz. 447 */ 448 #define CPU_FREQ_HZ_DEFAULT 200000000 449 450 static void mips_cp0_period_set(MIPSCPU *cpu) 451 { 452 CPUMIPSState *env = &cpu->env; 453 454 clock_set_mul_div(cpu->count_div, env->cpu_model->CCRes, 1); 455 clock_set_source(cpu->count_div, cpu->clock); 456 clock_set_source(env->count_clock, cpu->count_div); 457 } 458 459 static void mips_cpu_realizefn(DeviceState *dev, Error **errp) 460 { 461 CPUState *cs = CPU(dev); 462 MIPSCPU *cpu = MIPS_CPU(dev); 463 CPUMIPSState *env = &cpu->env; 464 MIPSCPUClass *mcc = MIPS_CPU_GET_CLASS(dev); 465 Error *local_err = NULL; 466 467 if (!clock_get(cpu->clock)) { 468 #ifndef CONFIG_USER_ONLY 469 if (!qtest_enabled()) { 470 g_autofree char *cpu_freq_str = freq_to_str(CPU_FREQ_HZ_DEFAULT); 471 472 warn_report("CPU input clock is not connected to any output clock, " 473 "using default frequency of %s.", cpu_freq_str); 474 } 475 #endif 476 /* Initialize the frequency in case the clock remains unconnected. */ 477 clock_set_hz(cpu->clock, CPU_FREQ_HZ_DEFAULT); 478 } 479 mips_cp0_period_set(cpu); 480 481 cpu_exec_realizefn(cs, &local_err); 482 if (local_err != NULL) { 483 error_propagate(errp, local_err); 484 return; 485 } 486 487 env->exception_base = (int32_t)0xBFC00000; 488 489 #if defined(CONFIG_TCG) && !defined(CONFIG_USER_ONLY) 490 mmu_init(env, env->cpu_model); 491 #endif 492 fpu_init(env, env->cpu_model); 493 mvp_init(env); 494 495 cpu_reset(cs); 496 qemu_init_vcpu(cs); 497 498 mcc->parent_realize(dev, errp); 499 } 500 501 static void mips_cpu_initfn(Object *obj) 502 { 503 MIPSCPU *cpu = MIPS_CPU(obj); 504 CPUMIPSState *env = &cpu->env; 505 MIPSCPUClass *mcc = MIPS_CPU_GET_CLASS(obj); 506 507 cpu->clock = qdev_init_clock_in(DEVICE(obj), "clk-in", NULL, cpu, 0); 508 cpu->count_div = clock_new(OBJECT(obj), "clk-div-count"); 509 env->count_clock = clock_new(OBJECT(obj), "clk-count"); 510 env->cpu_model = mcc->cpu_def; 511 #ifndef CONFIG_USER_ONLY 512 if (mcc->cpu_def->lcsr_cpucfg2 & (1 << CPUCFG2_LCSRP)) { 513 memory_region_init_io(&env->iocsr.mr, OBJECT(cpu), NULL, 514 env, "iocsr", UINT64_MAX); 515 address_space_init(&env->iocsr.as, 516 &env->iocsr.mr, "IOCSR"); 517 } 518 #endif 519 } 520 521 static char *mips_cpu_type_name(const char *cpu_model) 522 { 523 return g_strdup_printf(MIPS_CPU_TYPE_NAME("%s"), cpu_model); 524 } 525 526 static ObjectClass *mips_cpu_class_by_name(const char *cpu_model) 527 { 528 ObjectClass *oc; 529 char *typename; 530 531 typename = mips_cpu_type_name(cpu_model); 532 oc = object_class_by_name(typename); 533 g_free(typename); 534 return oc; 535 } 536 537 #ifndef CONFIG_USER_ONLY 538 #include "hw/core/sysemu-cpu-ops.h" 539 540 static const struct SysemuCPUOps mips_sysemu_ops = { 541 .get_phys_page_debug = mips_cpu_get_phys_page_debug, 542 .legacy_vmsd = &vmstate_mips_cpu, 543 }; 544 #endif 545 546 #ifdef CONFIG_TCG 547 #include "hw/core/tcg-cpu-ops.h" 548 /* 549 * NB: cannot be const, as some elements are changed for specific 550 * mips hardware (see hw/mips/jazz.c). 551 */ 552 static const struct TCGCPUOps mips_tcg_ops = { 553 .initialize = mips_tcg_init, 554 .synchronize_from_tb = mips_cpu_synchronize_from_tb, 555 .restore_state_to_opc = mips_restore_state_to_opc, 556 557 #if !defined(CONFIG_USER_ONLY) 558 .tlb_fill = mips_cpu_tlb_fill, 559 .cpu_exec_interrupt = mips_cpu_exec_interrupt, 560 .do_interrupt = mips_cpu_do_interrupt, 561 .do_transaction_failed = mips_cpu_do_transaction_failed, 562 .do_unaligned_access = mips_cpu_do_unaligned_access, 563 .io_recompile_replay_branch = mips_io_recompile_replay_branch, 564 #endif /* !CONFIG_USER_ONLY */ 565 }; 566 #endif /* CONFIG_TCG */ 567 568 static void mips_cpu_class_init(ObjectClass *c, void *data) 569 { 570 MIPSCPUClass *mcc = MIPS_CPU_CLASS(c); 571 CPUClass *cc = CPU_CLASS(c); 572 DeviceClass *dc = DEVICE_CLASS(c); 573 ResettableClass *rc = RESETTABLE_CLASS(c); 574 575 device_class_set_parent_realize(dc, mips_cpu_realizefn, 576 &mcc->parent_realize); 577 resettable_class_set_parent_phases(rc, NULL, mips_cpu_reset_hold, NULL, 578 &mcc->parent_phases); 579 580 cc->class_by_name = mips_cpu_class_by_name; 581 cc->has_work = mips_cpu_has_work; 582 cc->dump_state = mips_cpu_dump_state; 583 cc->set_pc = mips_cpu_set_pc; 584 cc->get_pc = mips_cpu_get_pc; 585 cc->gdb_read_register = mips_cpu_gdb_read_register; 586 cc->gdb_write_register = mips_cpu_gdb_write_register; 587 #ifndef CONFIG_USER_ONLY 588 cc->sysemu_ops = &mips_sysemu_ops; 589 #endif 590 cc->disas_set_info = mips_cpu_disas_set_info; 591 cc->gdb_num_core_regs = 73; 592 cc->gdb_stop_before_watchpoint = true; 593 #ifdef CONFIG_TCG 594 cc->tcg_ops = &mips_tcg_ops; 595 #endif /* CONFIG_TCG */ 596 } 597 598 static const TypeInfo mips_cpu_type_info = { 599 .name = TYPE_MIPS_CPU, 600 .parent = TYPE_CPU, 601 .instance_size = sizeof(MIPSCPU), 602 .instance_align = __alignof(MIPSCPU), 603 .instance_init = mips_cpu_initfn, 604 .abstract = true, 605 .class_size = sizeof(MIPSCPUClass), 606 .class_init = mips_cpu_class_init, 607 }; 608 609 static void mips_cpu_cpudef_class_init(ObjectClass *oc, void *data) 610 { 611 MIPSCPUClass *mcc = MIPS_CPU_CLASS(oc); 612 mcc->cpu_def = data; 613 } 614 615 static void mips_register_cpudef_type(const struct mips_def_t *def) 616 { 617 char *typename = mips_cpu_type_name(def->name); 618 TypeInfo ti = { 619 .name = typename, 620 .parent = TYPE_MIPS_CPU, 621 .class_init = mips_cpu_cpudef_class_init, 622 .class_data = (void *)def, 623 }; 624 625 type_register(&ti); 626 g_free(typename); 627 } 628 629 static void mips_cpu_register_types(void) 630 { 631 int i; 632 633 type_register_static(&mips_cpu_type_info); 634 for (i = 0; i < mips_defs_number; i++) { 635 mips_register_cpudef_type(&mips_defs[i]); 636 } 637 } 638 639 type_init(mips_cpu_register_types) 640 641 /* Could be used by generic CPU object */ 642 MIPSCPU *mips_cpu_create_with_clock(const char *cpu_type, Clock *cpu_refclk) 643 { 644 DeviceState *cpu; 645 646 cpu = DEVICE(object_new(cpu_type)); 647 qdev_connect_clock_in(cpu, "clk-in", cpu_refclk); 648 qdev_realize(cpu, NULL, &error_abort); 649 650 return MIPS_CPU(cpu); 651 } 652 653 bool cpu_supports_isa(const CPUMIPSState *env, uint64_t isa_mask) 654 { 655 return (env->cpu_model->insn_flags & isa_mask) != 0; 656 } 657 658 bool cpu_type_supports_isa(const char *cpu_type, uint64_t isa) 659 { 660 const MIPSCPUClass *mcc = MIPS_CPU_CLASS(object_class_by_name(cpu_type)); 661 return (mcc->cpu_def->insn_flags & isa) != 0; 662 } 663 664 bool cpu_type_supports_cps_smp(const char *cpu_type) 665 { 666 const MIPSCPUClass *mcc = MIPS_CPU_CLASS(object_class_by_name(cpu_type)); 667 return (mcc->cpu_def->CP0_Config3 & (1 << CP0C3_CMGCR)) != 0; 668 } 669