1 /* 2 * QEMU Hypervisor.framework support for Apple Silicon 3 4 * Copyright 2020 Alexander Graf <agraf@csgraf.de> 5 * Copyright 2020 Google LLC 6 * 7 * This work is licensed under the terms of the GNU GPL, version 2 or later. 8 * See the COPYING file in the top-level directory. 9 * 10 */ 11 12 #include "qemu/osdep.h" 13 #include "qemu/error-report.h" 14 #include "qemu/log.h" 15 16 #include "system/runstate.h" 17 #include "system/hvf.h" 18 #include "system/hvf_int.h" 19 #include "system/hw_accel.h" 20 #include "hvf_arm.h" 21 #include "cpregs.h" 22 #include "cpu-sysregs.h" 23 24 #include <mach/mach_time.h> 25 26 #include "system/address-spaces.h" 27 #include "system/memory.h" 28 #include "hw/boards.h" 29 #include "hw/irq.h" 30 #include "qemu/main-loop.h" 31 #include "system/cpus.h" 32 #include "arm-powerctl.h" 33 #include "target/arm/cpu.h" 34 #include "target/arm/internals.h" 35 #include "target/arm/multiprocessing.h" 36 #include "target/arm/gtimer.h" 37 #include "trace.h" 38 #include "migration/vmstate.h" 39 40 #include "gdbstub/enums.h" 41 42 #define MDSCR_EL1_SS_SHIFT 0 43 #define MDSCR_EL1_MDE_SHIFT 15 44 45 static const uint16_t dbgbcr_regs[] = { 46 HV_SYS_REG_DBGBCR0_EL1, 47 HV_SYS_REG_DBGBCR1_EL1, 48 HV_SYS_REG_DBGBCR2_EL1, 49 HV_SYS_REG_DBGBCR3_EL1, 50 HV_SYS_REG_DBGBCR4_EL1, 51 HV_SYS_REG_DBGBCR5_EL1, 52 HV_SYS_REG_DBGBCR6_EL1, 53 HV_SYS_REG_DBGBCR7_EL1, 54 HV_SYS_REG_DBGBCR8_EL1, 55 HV_SYS_REG_DBGBCR9_EL1, 56 HV_SYS_REG_DBGBCR10_EL1, 57 HV_SYS_REG_DBGBCR11_EL1, 58 HV_SYS_REG_DBGBCR12_EL1, 59 HV_SYS_REG_DBGBCR13_EL1, 60 HV_SYS_REG_DBGBCR14_EL1, 61 HV_SYS_REG_DBGBCR15_EL1, 62 }; 63 64 static const uint16_t dbgbvr_regs[] = { 65 HV_SYS_REG_DBGBVR0_EL1, 66 HV_SYS_REG_DBGBVR1_EL1, 67 HV_SYS_REG_DBGBVR2_EL1, 68 HV_SYS_REG_DBGBVR3_EL1, 69 HV_SYS_REG_DBGBVR4_EL1, 70 HV_SYS_REG_DBGBVR5_EL1, 71 HV_SYS_REG_DBGBVR6_EL1, 72 HV_SYS_REG_DBGBVR7_EL1, 73 HV_SYS_REG_DBGBVR8_EL1, 74 HV_SYS_REG_DBGBVR9_EL1, 75 HV_SYS_REG_DBGBVR10_EL1, 76 HV_SYS_REG_DBGBVR11_EL1, 77 HV_SYS_REG_DBGBVR12_EL1, 78 HV_SYS_REG_DBGBVR13_EL1, 79 HV_SYS_REG_DBGBVR14_EL1, 80 HV_SYS_REG_DBGBVR15_EL1, 81 }; 82 83 static const uint16_t dbgwcr_regs[] = { 84 HV_SYS_REG_DBGWCR0_EL1, 85 HV_SYS_REG_DBGWCR1_EL1, 86 HV_SYS_REG_DBGWCR2_EL1, 87 HV_SYS_REG_DBGWCR3_EL1, 88 HV_SYS_REG_DBGWCR4_EL1, 89 HV_SYS_REG_DBGWCR5_EL1, 90 HV_SYS_REG_DBGWCR6_EL1, 91 HV_SYS_REG_DBGWCR7_EL1, 92 HV_SYS_REG_DBGWCR8_EL1, 93 HV_SYS_REG_DBGWCR9_EL1, 94 HV_SYS_REG_DBGWCR10_EL1, 95 HV_SYS_REG_DBGWCR11_EL1, 96 HV_SYS_REG_DBGWCR12_EL1, 97 HV_SYS_REG_DBGWCR13_EL1, 98 HV_SYS_REG_DBGWCR14_EL1, 99 HV_SYS_REG_DBGWCR15_EL1, 100 }; 101 102 static const uint16_t dbgwvr_regs[] = { 103 HV_SYS_REG_DBGWVR0_EL1, 104 HV_SYS_REG_DBGWVR1_EL1, 105 HV_SYS_REG_DBGWVR2_EL1, 106 HV_SYS_REG_DBGWVR3_EL1, 107 HV_SYS_REG_DBGWVR4_EL1, 108 HV_SYS_REG_DBGWVR5_EL1, 109 HV_SYS_REG_DBGWVR6_EL1, 110 HV_SYS_REG_DBGWVR7_EL1, 111 HV_SYS_REG_DBGWVR8_EL1, 112 HV_SYS_REG_DBGWVR9_EL1, 113 HV_SYS_REG_DBGWVR10_EL1, 114 HV_SYS_REG_DBGWVR11_EL1, 115 HV_SYS_REG_DBGWVR12_EL1, 116 HV_SYS_REG_DBGWVR13_EL1, 117 HV_SYS_REG_DBGWVR14_EL1, 118 HV_SYS_REG_DBGWVR15_EL1, 119 }; 120 121 static inline int hvf_arm_num_brps(hv_vcpu_config_t config) 122 { 123 uint64_t val; 124 hv_return_t ret; 125 ret = hv_vcpu_config_get_feature_reg(config, HV_FEATURE_REG_ID_AA64DFR0_EL1, 126 &val); 127 assert_hvf_ok(ret); 128 return FIELD_EX64(val, ID_AA64DFR0, BRPS) + 1; 129 } 130 131 static inline int hvf_arm_num_wrps(hv_vcpu_config_t config) 132 { 133 uint64_t val; 134 hv_return_t ret; 135 ret = hv_vcpu_config_get_feature_reg(config, HV_FEATURE_REG_ID_AA64DFR0_EL1, 136 &val); 137 assert_hvf_ok(ret); 138 return FIELD_EX64(val, ID_AA64DFR0, WRPS) + 1; 139 } 140 141 void hvf_arm_init_debug(void) 142 { 143 hv_vcpu_config_t config; 144 config = hv_vcpu_config_create(); 145 146 max_hw_bps = hvf_arm_num_brps(config); 147 hw_breakpoints = 148 g_array_sized_new(true, true, sizeof(HWBreakpoint), max_hw_bps); 149 150 max_hw_wps = hvf_arm_num_wrps(config); 151 hw_watchpoints = 152 g_array_sized_new(true, true, sizeof(HWWatchpoint), max_hw_wps); 153 } 154 155 #define HVF_SYSREG(crn, crm, op0, op1, op2) \ 156 ENCODE_AA64_CP_REG(CP_REG_ARM64_SYSREG_CP, crn, crm, op0, op1, op2) 157 158 #define SYSREG_OP0_SHIFT 20 159 #define SYSREG_OP0_MASK 0x3 160 #define SYSREG_OP0(sysreg) ((sysreg >> SYSREG_OP0_SHIFT) & SYSREG_OP0_MASK) 161 #define SYSREG_OP1_SHIFT 14 162 #define SYSREG_OP1_MASK 0x7 163 #define SYSREG_OP1(sysreg) ((sysreg >> SYSREG_OP1_SHIFT) & SYSREG_OP1_MASK) 164 #define SYSREG_CRN_SHIFT 10 165 #define SYSREG_CRN_MASK 0xf 166 #define SYSREG_CRN(sysreg) ((sysreg >> SYSREG_CRN_SHIFT) & SYSREG_CRN_MASK) 167 #define SYSREG_CRM_SHIFT 1 168 #define SYSREG_CRM_MASK 0xf 169 #define SYSREG_CRM(sysreg) ((sysreg >> SYSREG_CRM_SHIFT) & SYSREG_CRM_MASK) 170 #define SYSREG_OP2_SHIFT 17 171 #define SYSREG_OP2_MASK 0x7 172 #define SYSREG_OP2(sysreg) ((sysreg >> SYSREG_OP2_SHIFT) & SYSREG_OP2_MASK) 173 174 #define SYSREG(op0, op1, crn, crm, op2) \ 175 ((op0 << SYSREG_OP0_SHIFT) | \ 176 (op1 << SYSREG_OP1_SHIFT) | \ 177 (crn << SYSREG_CRN_SHIFT) | \ 178 (crm << SYSREG_CRM_SHIFT) | \ 179 (op2 << SYSREG_OP2_SHIFT)) 180 #define SYSREG_MASK \ 181 SYSREG(SYSREG_OP0_MASK, \ 182 SYSREG_OP1_MASK, \ 183 SYSREG_CRN_MASK, \ 184 SYSREG_CRM_MASK, \ 185 SYSREG_OP2_MASK) 186 #define SYSREG_OSLAR_EL1 SYSREG(2, 0, 1, 0, 4) 187 #define SYSREG_OSLSR_EL1 SYSREG(2, 0, 1, 1, 4) 188 #define SYSREG_OSDLR_EL1 SYSREG(2, 0, 1, 3, 4) 189 #define SYSREG_CNTPCT_EL0 SYSREG(3, 3, 14, 0, 1) 190 #define SYSREG_CNTP_CTL_EL0 SYSREG(3, 3, 14, 2, 1) 191 #define SYSREG_PMCR_EL0 SYSREG(3, 3, 9, 12, 0) 192 #define SYSREG_PMUSERENR_EL0 SYSREG(3, 3, 9, 14, 0) 193 #define SYSREG_PMCNTENSET_EL0 SYSREG(3, 3, 9, 12, 1) 194 #define SYSREG_PMCNTENCLR_EL0 SYSREG(3, 3, 9, 12, 2) 195 #define SYSREG_PMINTENCLR_EL1 SYSREG(3, 0, 9, 14, 2) 196 #define SYSREG_PMOVSCLR_EL0 SYSREG(3, 3, 9, 12, 3) 197 #define SYSREG_PMSWINC_EL0 SYSREG(3, 3, 9, 12, 4) 198 #define SYSREG_PMSELR_EL0 SYSREG(3, 3, 9, 12, 5) 199 #define SYSREG_PMCEID0_EL0 SYSREG(3, 3, 9, 12, 6) 200 #define SYSREG_PMCEID1_EL0 SYSREG(3, 3, 9, 12, 7) 201 #define SYSREG_PMCCNTR_EL0 SYSREG(3, 3, 9, 13, 0) 202 #define SYSREG_PMCCFILTR_EL0 SYSREG(3, 3, 14, 15, 7) 203 204 #define SYSREG_ICC_AP0R0_EL1 SYSREG(3, 0, 12, 8, 4) 205 #define SYSREG_ICC_AP0R1_EL1 SYSREG(3, 0, 12, 8, 5) 206 #define SYSREG_ICC_AP0R2_EL1 SYSREG(3, 0, 12, 8, 6) 207 #define SYSREG_ICC_AP0R3_EL1 SYSREG(3, 0, 12, 8, 7) 208 #define SYSREG_ICC_AP1R0_EL1 SYSREG(3, 0, 12, 9, 0) 209 #define SYSREG_ICC_AP1R1_EL1 SYSREG(3, 0, 12, 9, 1) 210 #define SYSREG_ICC_AP1R2_EL1 SYSREG(3, 0, 12, 9, 2) 211 #define SYSREG_ICC_AP1R3_EL1 SYSREG(3, 0, 12, 9, 3) 212 #define SYSREG_ICC_ASGI1R_EL1 SYSREG(3, 0, 12, 11, 6) 213 #define SYSREG_ICC_BPR0_EL1 SYSREG(3, 0, 12, 8, 3) 214 #define SYSREG_ICC_BPR1_EL1 SYSREG(3, 0, 12, 12, 3) 215 #define SYSREG_ICC_CTLR_EL1 SYSREG(3, 0, 12, 12, 4) 216 #define SYSREG_ICC_DIR_EL1 SYSREG(3, 0, 12, 11, 1) 217 #define SYSREG_ICC_EOIR0_EL1 SYSREG(3, 0, 12, 8, 1) 218 #define SYSREG_ICC_EOIR1_EL1 SYSREG(3, 0, 12, 12, 1) 219 #define SYSREG_ICC_HPPIR0_EL1 SYSREG(3, 0, 12, 8, 2) 220 #define SYSREG_ICC_HPPIR1_EL1 SYSREG(3, 0, 12, 12, 2) 221 #define SYSREG_ICC_IAR0_EL1 SYSREG(3, 0, 12, 8, 0) 222 #define SYSREG_ICC_IAR1_EL1 SYSREG(3, 0, 12, 12, 0) 223 #define SYSREG_ICC_IGRPEN0_EL1 SYSREG(3, 0, 12, 12, 6) 224 #define SYSREG_ICC_IGRPEN1_EL1 SYSREG(3, 0, 12, 12, 7) 225 #define SYSREG_ICC_PMR_EL1 SYSREG(3, 0, 4, 6, 0) 226 #define SYSREG_ICC_RPR_EL1 SYSREG(3, 0, 12, 11, 3) 227 #define SYSREG_ICC_SGI0R_EL1 SYSREG(3, 0, 12, 11, 7) 228 #define SYSREG_ICC_SGI1R_EL1 SYSREG(3, 0, 12, 11, 5) 229 #define SYSREG_ICC_SRE_EL1 SYSREG(3, 0, 12, 12, 5) 230 231 #define SYSREG_MDSCR_EL1 SYSREG(2, 0, 0, 2, 2) 232 #define SYSREG_DBGBVR0_EL1 SYSREG(2, 0, 0, 0, 4) 233 #define SYSREG_DBGBCR0_EL1 SYSREG(2, 0, 0, 0, 5) 234 #define SYSREG_DBGWVR0_EL1 SYSREG(2, 0, 0, 0, 6) 235 #define SYSREG_DBGWCR0_EL1 SYSREG(2, 0, 0, 0, 7) 236 #define SYSREG_DBGBVR1_EL1 SYSREG(2, 0, 0, 1, 4) 237 #define SYSREG_DBGBCR1_EL1 SYSREG(2, 0, 0, 1, 5) 238 #define SYSREG_DBGWVR1_EL1 SYSREG(2, 0, 0, 1, 6) 239 #define SYSREG_DBGWCR1_EL1 SYSREG(2, 0, 0, 1, 7) 240 #define SYSREG_DBGBVR2_EL1 SYSREG(2, 0, 0, 2, 4) 241 #define SYSREG_DBGBCR2_EL1 SYSREG(2, 0, 0, 2, 5) 242 #define SYSREG_DBGWVR2_EL1 SYSREG(2, 0, 0, 2, 6) 243 #define SYSREG_DBGWCR2_EL1 SYSREG(2, 0, 0, 2, 7) 244 #define SYSREG_DBGBVR3_EL1 SYSREG(2, 0, 0, 3, 4) 245 #define SYSREG_DBGBCR3_EL1 SYSREG(2, 0, 0, 3, 5) 246 #define SYSREG_DBGWVR3_EL1 SYSREG(2, 0, 0, 3, 6) 247 #define SYSREG_DBGWCR3_EL1 SYSREG(2, 0, 0, 3, 7) 248 #define SYSREG_DBGBVR4_EL1 SYSREG(2, 0, 0, 4, 4) 249 #define SYSREG_DBGBCR4_EL1 SYSREG(2, 0, 0, 4, 5) 250 #define SYSREG_DBGWVR4_EL1 SYSREG(2, 0, 0, 4, 6) 251 #define SYSREG_DBGWCR4_EL1 SYSREG(2, 0, 0, 4, 7) 252 #define SYSREG_DBGBVR5_EL1 SYSREG(2, 0, 0, 5, 4) 253 #define SYSREG_DBGBCR5_EL1 SYSREG(2, 0, 0, 5, 5) 254 #define SYSREG_DBGWVR5_EL1 SYSREG(2, 0, 0, 5, 6) 255 #define SYSREG_DBGWCR5_EL1 SYSREG(2, 0, 0, 5, 7) 256 #define SYSREG_DBGBVR6_EL1 SYSREG(2, 0, 0, 6, 4) 257 #define SYSREG_DBGBCR6_EL1 SYSREG(2, 0, 0, 6, 5) 258 #define SYSREG_DBGWVR6_EL1 SYSREG(2, 0, 0, 6, 6) 259 #define SYSREG_DBGWCR6_EL1 SYSREG(2, 0, 0, 6, 7) 260 #define SYSREG_DBGBVR7_EL1 SYSREG(2, 0, 0, 7, 4) 261 #define SYSREG_DBGBCR7_EL1 SYSREG(2, 0, 0, 7, 5) 262 #define SYSREG_DBGWVR7_EL1 SYSREG(2, 0, 0, 7, 6) 263 #define SYSREG_DBGWCR7_EL1 SYSREG(2, 0, 0, 7, 7) 264 #define SYSREG_DBGBVR8_EL1 SYSREG(2, 0, 0, 8, 4) 265 #define SYSREG_DBGBCR8_EL1 SYSREG(2, 0, 0, 8, 5) 266 #define SYSREG_DBGWVR8_EL1 SYSREG(2, 0, 0, 8, 6) 267 #define SYSREG_DBGWCR8_EL1 SYSREG(2, 0, 0, 8, 7) 268 #define SYSREG_DBGBVR9_EL1 SYSREG(2, 0, 0, 9, 4) 269 #define SYSREG_DBGBCR9_EL1 SYSREG(2, 0, 0, 9, 5) 270 #define SYSREG_DBGWVR9_EL1 SYSREG(2, 0, 0, 9, 6) 271 #define SYSREG_DBGWCR9_EL1 SYSREG(2, 0, 0, 9, 7) 272 #define SYSREG_DBGBVR10_EL1 SYSREG(2, 0, 0, 10, 4) 273 #define SYSREG_DBGBCR10_EL1 SYSREG(2, 0, 0, 10, 5) 274 #define SYSREG_DBGWVR10_EL1 SYSREG(2, 0, 0, 10, 6) 275 #define SYSREG_DBGWCR10_EL1 SYSREG(2, 0, 0, 10, 7) 276 #define SYSREG_DBGBVR11_EL1 SYSREG(2, 0, 0, 11, 4) 277 #define SYSREG_DBGBCR11_EL1 SYSREG(2, 0, 0, 11, 5) 278 #define SYSREG_DBGWVR11_EL1 SYSREG(2, 0, 0, 11, 6) 279 #define SYSREG_DBGWCR11_EL1 SYSREG(2, 0, 0, 11, 7) 280 #define SYSREG_DBGBVR12_EL1 SYSREG(2, 0, 0, 12, 4) 281 #define SYSREG_DBGBCR12_EL1 SYSREG(2, 0, 0, 12, 5) 282 #define SYSREG_DBGWVR12_EL1 SYSREG(2, 0, 0, 12, 6) 283 #define SYSREG_DBGWCR12_EL1 SYSREG(2, 0, 0, 12, 7) 284 #define SYSREG_DBGBVR13_EL1 SYSREG(2, 0, 0, 13, 4) 285 #define SYSREG_DBGBCR13_EL1 SYSREG(2, 0, 0, 13, 5) 286 #define SYSREG_DBGWVR13_EL1 SYSREG(2, 0, 0, 13, 6) 287 #define SYSREG_DBGWCR13_EL1 SYSREG(2, 0, 0, 13, 7) 288 #define SYSREG_DBGBVR14_EL1 SYSREG(2, 0, 0, 14, 4) 289 #define SYSREG_DBGBCR14_EL1 SYSREG(2, 0, 0, 14, 5) 290 #define SYSREG_DBGWVR14_EL1 SYSREG(2, 0, 0, 14, 6) 291 #define SYSREG_DBGWCR14_EL1 SYSREG(2, 0, 0, 14, 7) 292 #define SYSREG_DBGBVR15_EL1 SYSREG(2, 0, 0, 15, 4) 293 #define SYSREG_DBGBCR15_EL1 SYSREG(2, 0, 0, 15, 5) 294 #define SYSREG_DBGWVR15_EL1 SYSREG(2, 0, 0, 15, 6) 295 #define SYSREG_DBGWCR15_EL1 SYSREG(2, 0, 0, 15, 7) 296 297 #define WFX_IS_WFE (1 << 0) 298 299 #define TMR_CTL_ENABLE (1 << 0) 300 #define TMR_CTL_IMASK (1 << 1) 301 #define TMR_CTL_ISTATUS (1 << 2) 302 303 static void hvf_wfi(CPUState *cpu); 304 305 static uint32_t chosen_ipa_bit_size; 306 307 typedef struct HVFVTimer { 308 /* Vtimer value during migration and paused state */ 309 uint64_t vtimer_val; 310 } HVFVTimer; 311 312 static HVFVTimer vtimer; 313 314 typedef struct ARMHostCPUFeatures { 315 ARMISARegisters isar; 316 uint64_t features; 317 uint64_t midr; 318 uint32_t reset_sctlr; 319 const char *dtb_compatible; 320 } ARMHostCPUFeatures; 321 322 static ARMHostCPUFeatures arm_host_cpu_features; 323 324 struct hvf_reg_match { 325 int reg; 326 uint64_t offset; 327 }; 328 329 static const struct hvf_reg_match hvf_reg_match[] = { 330 { HV_REG_X0, offsetof(CPUARMState, xregs[0]) }, 331 { HV_REG_X1, offsetof(CPUARMState, xregs[1]) }, 332 { HV_REG_X2, offsetof(CPUARMState, xregs[2]) }, 333 { HV_REG_X3, offsetof(CPUARMState, xregs[3]) }, 334 { HV_REG_X4, offsetof(CPUARMState, xregs[4]) }, 335 { HV_REG_X5, offsetof(CPUARMState, xregs[5]) }, 336 { HV_REG_X6, offsetof(CPUARMState, xregs[6]) }, 337 { HV_REG_X7, offsetof(CPUARMState, xregs[7]) }, 338 { HV_REG_X8, offsetof(CPUARMState, xregs[8]) }, 339 { HV_REG_X9, offsetof(CPUARMState, xregs[9]) }, 340 { HV_REG_X10, offsetof(CPUARMState, xregs[10]) }, 341 { HV_REG_X11, offsetof(CPUARMState, xregs[11]) }, 342 { HV_REG_X12, offsetof(CPUARMState, xregs[12]) }, 343 { HV_REG_X13, offsetof(CPUARMState, xregs[13]) }, 344 { HV_REG_X14, offsetof(CPUARMState, xregs[14]) }, 345 { HV_REG_X15, offsetof(CPUARMState, xregs[15]) }, 346 { HV_REG_X16, offsetof(CPUARMState, xregs[16]) }, 347 { HV_REG_X17, offsetof(CPUARMState, xregs[17]) }, 348 { HV_REG_X18, offsetof(CPUARMState, xregs[18]) }, 349 { HV_REG_X19, offsetof(CPUARMState, xregs[19]) }, 350 { HV_REG_X20, offsetof(CPUARMState, xregs[20]) }, 351 { HV_REG_X21, offsetof(CPUARMState, xregs[21]) }, 352 { HV_REG_X22, offsetof(CPUARMState, xregs[22]) }, 353 { HV_REG_X23, offsetof(CPUARMState, xregs[23]) }, 354 { HV_REG_X24, offsetof(CPUARMState, xregs[24]) }, 355 { HV_REG_X25, offsetof(CPUARMState, xregs[25]) }, 356 { HV_REG_X26, offsetof(CPUARMState, xregs[26]) }, 357 { HV_REG_X27, offsetof(CPUARMState, xregs[27]) }, 358 { HV_REG_X28, offsetof(CPUARMState, xregs[28]) }, 359 { HV_REG_X29, offsetof(CPUARMState, xregs[29]) }, 360 { HV_REG_X30, offsetof(CPUARMState, xregs[30]) }, 361 { HV_REG_PC, offsetof(CPUARMState, pc) }, 362 }; 363 364 static const struct hvf_reg_match hvf_fpreg_match[] = { 365 { HV_SIMD_FP_REG_Q0, offsetof(CPUARMState, vfp.zregs[0]) }, 366 { HV_SIMD_FP_REG_Q1, offsetof(CPUARMState, vfp.zregs[1]) }, 367 { HV_SIMD_FP_REG_Q2, offsetof(CPUARMState, vfp.zregs[2]) }, 368 { HV_SIMD_FP_REG_Q3, offsetof(CPUARMState, vfp.zregs[3]) }, 369 { HV_SIMD_FP_REG_Q4, offsetof(CPUARMState, vfp.zregs[4]) }, 370 { HV_SIMD_FP_REG_Q5, offsetof(CPUARMState, vfp.zregs[5]) }, 371 { HV_SIMD_FP_REG_Q6, offsetof(CPUARMState, vfp.zregs[6]) }, 372 { HV_SIMD_FP_REG_Q7, offsetof(CPUARMState, vfp.zregs[7]) }, 373 { HV_SIMD_FP_REG_Q8, offsetof(CPUARMState, vfp.zregs[8]) }, 374 { HV_SIMD_FP_REG_Q9, offsetof(CPUARMState, vfp.zregs[9]) }, 375 { HV_SIMD_FP_REG_Q10, offsetof(CPUARMState, vfp.zregs[10]) }, 376 { HV_SIMD_FP_REG_Q11, offsetof(CPUARMState, vfp.zregs[11]) }, 377 { HV_SIMD_FP_REG_Q12, offsetof(CPUARMState, vfp.zregs[12]) }, 378 { HV_SIMD_FP_REG_Q13, offsetof(CPUARMState, vfp.zregs[13]) }, 379 { HV_SIMD_FP_REG_Q14, offsetof(CPUARMState, vfp.zregs[14]) }, 380 { HV_SIMD_FP_REG_Q15, offsetof(CPUARMState, vfp.zregs[15]) }, 381 { HV_SIMD_FP_REG_Q16, offsetof(CPUARMState, vfp.zregs[16]) }, 382 { HV_SIMD_FP_REG_Q17, offsetof(CPUARMState, vfp.zregs[17]) }, 383 { HV_SIMD_FP_REG_Q18, offsetof(CPUARMState, vfp.zregs[18]) }, 384 { HV_SIMD_FP_REG_Q19, offsetof(CPUARMState, vfp.zregs[19]) }, 385 { HV_SIMD_FP_REG_Q20, offsetof(CPUARMState, vfp.zregs[20]) }, 386 { HV_SIMD_FP_REG_Q21, offsetof(CPUARMState, vfp.zregs[21]) }, 387 { HV_SIMD_FP_REG_Q22, offsetof(CPUARMState, vfp.zregs[22]) }, 388 { HV_SIMD_FP_REG_Q23, offsetof(CPUARMState, vfp.zregs[23]) }, 389 { HV_SIMD_FP_REG_Q24, offsetof(CPUARMState, vfp.zregs[24]) }, 390 { HV_SIMD_FP_REG_Q25, offsetof(CPUARMState, vfp.zregs[25]) }, 391 { HV_SIMD_FP_REG_Q26, offsetof(CPUARMState, vfp.zregs[26]) }, 392 { HV_SIMD_FP_REG_Q27, offsetof(CPUARMState, vfp.zregs[27]) }, 393 { HV_SIMD_FP_REG_Q28, offsetof(CPUARMState, vfp.zregs[28]) }, 394 { HV_SIMD_FP_REG_Q29, offsetof(CPUARMState, vfp.zregs[29]) }, 395 { HV_SIMD_FP_REG_Q30, offsetof(CPUARMState, vfp.zregs[30]) }, 396 { HV_SIMD_FP_REG_Q31, offsetof(CPUARMState, vfp.zregs[31]) }, 397 }; 398 399 struct hvf_sreg_match { 400 int reg; 401 uint32_t key; 402 uint32_t cp_idx; 403 }; 404 405 static struct hvf_sreg_match hvf_sreg_match[] = { 406 { HV_SYS_REG_DBGBVR0_EL1, HVF_SYSREG(0, 0, 2, 0, 4) }, 407 { HV_SYS_REG_DBGBCR0_EL1, HVF_SYSREG(0, 0, 2, 0, 5) }, 408 { HV_SYS_REG_DBGWVR0_EL1, HVF_SYSREG(0, 0, 2, 0, 6) }, 409 { HV_SYS_REG_DBGWCR0_EL1, HVF_SYSREG(0, 0, 2, 0, 7) }, 410 411 { HV_SYS_REG_DBGBVR1_EL1, HVF_SYSREG(0, 1, 2, 0, 4) }, 412 { HV_SYS_REG_DBGBCR1_EL1, HVF_SYSREG(0, 1, 2, 0, 5) }, 413 { HV_SYS_REG_DBGWVR1_EL1, HVF_SYSREG(0, 1, 2, 0, 6) }, 414 { HV_SYS_REG_DBGWCR1_EL1, HVF_SYSREG(0, 1, 2, 0, 7) }, 415 416 { HV_SYS_REG_DBGBVR2_EL1, HVF_SYSREG(0, 2, 2, 0, 4) }, 417 { HV_SYS_REG_DBGBCR2_EL1, HVF_SYSREG(0, 2, 2, 0, 5) }, 418 { HV_SYS_REG_DBGWVR2_EL1, HVF_SYSREG(0, 2, 2, 0, 6) }, 419 { HV_SYS_REG_DBGWCR2_EL1, HVF_SYSREG(0, 2, 2, 0, 7) }, 420 421 { HV_SYS_REG_DBGBVR3_EL1, HVF_SYSREG(0, 3, 2, 0, 4) }, 422 { HV_SYS_REG_DBGBCR3_EL1, HVF_SYSREG(0, 3, 2, 0, 5) }, 423 { HV_SYS_REG_DBGWVR3_EL1, HVF_SYSREG(0, 3, 2, 0, 6) }, 424 { HV_SYS_REG_DBGWCR3_EL1, HVF_SYSREG(0, 3, 2, 0, 7) }, 425 426 { HV_SYS_REG_DBGBVR4_EL1, HVF_SYSREG(0, 4, 2, 0, 4) }, 427 { HV_SYS_REG_DBGBCR4_EL1, HVF_SYSREG(0, 4, 2, 0, 5) }, 428 { HV_SYS_REG_DBGWVR4_EL1, HVF_SYSREG(0, 4, 2, 0, 6) }, 429 { HV_SYS_REG_DBGWCR4_EL1, HVF_SYSREG(0, 4, 2, 0, 7) }, 430 431 { HV_SYS_REG_DBGBVR5_EL1, HVF_SYSREG(0, 5, 2, 0, 4) }, 432 { HV_SYS_REG_DBGBCR5_EL1, HVF_SYSREG(0, 5, 2, 0, 5) }, 433 { HV_SYS_REG_DBGWVR5_EL1, HVF_SYSREG(0, 5, 2, 0, 6) }, 434 { HV_SYS_REG_DBGWCR5_EL1, HVF_SYSREG(0, 5, 2, 0, 7) }, 435 436 { HV_SYS_REG_DBGBVR6_EL1, HVF_SYSREG(0, 6, 2, 0, 4) }, 437 { HV_SYS_REG_DBGBCR6_EL1, HVF_SYSREG(0, 6, 2, 0, 5) }, 438 { HV_SYS_REG_DBGWVR6_EL1, HVF_SYSREG(0, 6, 2, 0, 6) }, 439 { HV_SYS_REG_DBGWCR6_EL1, HVF_SYSREG(0, 6, 2, 0, 7) }, 440 441 { HV_SYS_REG_DBGBVR7_EL1, HVF_SYSREG(0, 7, 2, 0, 4) }, 442 { HV_SYS_REG_DBGBCR7_EL1, HVF_SYSREG(0, 7, 2, 0, 5) }, 443 { HV_SYS_REG_DBGWVR7_EL1, HVF_SYSREG(0, 7, 2, 0, 6) }, 444 { HV_SYS_REG_DBGWCR7_EL1, HVF_SYSREG(0, 7, 2, 0, 7) }, 445 446 { HV_SYS_REG_DBGBVR8_EL1, HVF_SYSREG(0, 8, 2, 0, 4) }, 447 { HV_SYS_REG_DBGBCR8_EL1, HVF_SYSREG(0, 8, 2, 0, 5) }, 448 { HV_SYS_REG_DBGWVR8_EL1, HVF_SYSREG(0, 8, 2, 0, 6) }, 449 { HV_SYS_REG_DBGWCR8_EL1, HVF_SYSREG(0, 8, 2, 0, 7) }, 450 451 { HV_SYS_REG_DBGBVR9_EL1, HVF_SYSREG(0, 9, 2, 0, 4) }, 452 { HV_SYS_REG_DBGBCR9_EL1, HVF_SYSREG(0, 9, 2, 0, 5) }, 453 { HV_SYS_REG_DBGWVR9_EL1, HVF_SYSREG(0, 9, 2, 0, 6) }, 454 { HV_SYS_REG_DBGWCR9_EL1, HVF_SYSREG(0, 9, 2, 0, 7) }, 455 456 { HV_SYS_REG_DBGBVR10_EL1, HVF_SYSREG(0, 10, 2, 0, 4) }, 457 { HV_SYS_REG_DBGBCR10_EL1, HVF_SYSREG(0, 10, 2, 0, 5) }, 458 { HV_SYS_REG_DBGWVR10_EL1, HVF_SYSREG(0, 10, 2, 0, 6) }, 459 { HV_SYS_REG_DBGWCR10_EL1, HVF_SYSREG(0, 10, 2, 0, 7) }, 460 461 { HV_SYS_REG_DBGBVR11_EL1, HVF_SYSREG(0, 11, 2, 0, 4) }, 462 { HV_SYS_REG_DBGBCR11_EL1, HVF_SYSREG(0, 11, 2, 0, 5) }, 463 { HV_SYS_REG_DBGWVR11_EL1, HVF_SYSREG(0, 11, 2, 0, 6) }, 464 { HV_SYS_REG_DBGWCR11_EL1, HVF_SYSREG(0, 11, 2, 0, 7) }, 465 466 { HV_SYS_REG_DBGBVR12_EL1, HVF_SYSREG(0, 12, 2, 0, 4) }, 467 { HV_SYS_REG_DBGBCR12_EL1, HVF_SYSREG(0, 12, 2, 0, 5) }, 468 { HV_SYS_REG_DBGWVR12_EL1, HVF_SYSREG(0, 12, 2, 0, 6) }, 469 { HV_SYS_REG_DBGWCR12_EL1, HVF_SYSREG(0, 12, 2, 0, 7) }, 470 471 { HV_SYS_REG_DBGBVR13_EL1, HVF_SYSREG(0, 13, 2, 0, 4) }, 472 { HV_SYS_REG_DBGBCR13_EL1, HVF_SYSREG(0, 13, 2, 0, 5) }, 473 { HV_SYS_REG_DBGWVR13_EL1, HVF_SYSREG(0, 13, 2, 0, 6) }, 474 { HV_SYS_REG_DBGWCR13_EL1, HVF_SYSREG(0, 13, 2, 0, 7) }, 475 476 { HV_SYS_REG_DBGBVR14_EL1, HVF_SYSREG(0, 14, 2, 0, 4) }, 477 { HV_SYS_REG_DBGBCR14_EL1, HVF_SYSREG(0, 14, 2, 0, 5) }, 478 { HV_SYS_REG_DBGWVR14_EL1, HVF_SYSREG(0, 14, 2, 0, 6) }, 479 { HV_SYS_REG_DBGWCR14_EL1, HVF_SYSREG(0, 14, 2, 0, 7) }, 480 481 { HV_SYS_REG_DBGBVR15_EL1, HVF_SYSREG(0, 15, 2, 0, 4) }, 482 { HV_SYS_REG_DBGBCR15_EL1, HVF_SYSREG(0, 15, 2, 0, 5) }, 483 { HV_SYS_REG_DBGWVR15_EL1, HVF_SYSREG(0, 15, 2, 0, 6) }, 484 { HV_SYS_REG_DBGWCR15_EL1, HVF_SYSREG(0, 15, 2, 0, 7) }, 485 486 #ifdef SYNC_NO_RAW_REGS 487 /* 488 * The registers below are manually synced on init because they are 489 * marked as NO_RAW. We still list them to make number space sync easier. 490 */ 491 { HV_SYS_REG_MDCCINT_EL1, HVF_SYSREG(0, 2, 2, 0, 0) }, 492 { HV_SYS_REG_MIDR_EL1, HVF_SYSREG(0, 0, 3, 0, 0) }, 493 { HV_SYS_REG_MPIDR_EL1, HVF_SYSREG(0, 0, 3, 0, 5) }, 494 { HV_SYS_REG_ID_AA64PFR0_EL1, HVF_SYSREG(0, 4, 3, 0, 0) }, 495 #endif 496 { HV_SYS_REG_ID_AA64PFR1_EL1, HVF_SYSREG(0, 4, 3, 0, 1) }, 497 { HV_SYS_REG_ID_AA64DFR0_EL1, HVF_SYSREG(0, 5, 3, 0, 0) }, 498 { HV_SYS_REG_ID_AA64DFR1_EL1, HVF_SYSREG(0, 5, 3, 0, 1) }, 499 { HV_SYS_REG_ID_AA64ISAR0_EL1, HVF_SYSREG(0, 6, 3, 0, 0) }, 500 { HV_SYS_REG_ID_AA64ISAR1_EL1, HVF_SYSREG(0, 6, 3, 0, 1) }, 501 #ifdef SYNC_NO_MMFR0 502 /* We keep the hardware MMFR0 around. HW limits are there anyway */ 503 { HV_SYS_REG_ID_AA64MMFR0_EL1, HVF_SYSREG(0, 7, 3, 0, 0) }, 504 #endif 505 { HV_SYS_REG_ID_AA64MMFR1_EL1, HVF_SYSREG(0, 7, 3, 0, 1) }, 506 { HV_SYS_REG_ID_AA64MMFR2_EL1, HVF_SYSREG(0, 7, 3, 0, 2) }, 507 /* Add ID_AA64MMFR3_EL1 here when HVF supports it */ 508 509 { HV_SYS_REG_MDSCR_EL1, HVF_SYSREG(0, 2, 2, 0, 2) }, 510 { HV_SYS_REG_SCTLR_EL1, HVF_SYSREG(1, 0, 3, 0, 0) }, 511 { HV_SYS_REG_CPACR_EL1, HVF_SYSREG(1, 0, 3, 0, 2) }, 512 { HV_SYS_REG_TTBR0_EL1, HVF_SYSREG(2, 0, 3, 0, 0) }, 513 { HV_SYS_REG_TTBR1_EL1, HVF_SYSREG(2, 0, 3, 0, 1) }, 514 { HV_SYS_REG_TCR_EL1, HVF_SYSREG(2, 0, 3, 0, 2) }, 515 516 { HV_SYS_REG_APIAKEYLO_EL1, HVF_SYSREG(2, 1, 3, 0, 0) }, 517 { HV_SYS_REG_APIAKEYHI_EL1, HVF_SYSREG(2, 1, 3, 0, 1) }, 518 { HV_SYS_REG_APIBKEYLO_EL1, HVF_SYSREG(2, 1, 3, 0, 2) }, 519 { HV_SYS_REG_APIBKEYHI_EL1, HVF_SYSREG(2, 1, 3, 0, 3) }, 520 { HV_SYS_REG_APDAKEYLO_EL1, HVF_SYSREG(2, 2, 3, 0, 0) }, 521 { HV_SYS_REG_APDAKEYHI_EL1, HVF_SYSREG(2, 2, 3, 0, 1) }, 522 { HV_SYS_REG_APDBKEYLO_EL1, HVF_SYSREG(2, 2, 3, 0, 2) }, 523 { HV_SYS_REG_APDBKEYHI_EL1, HVF_SYSREG(2, 2, 3, 0, 3) }, 524 { HV_SYS_REG_APGAKEYLO_EL1, HVF_SYSREG(2, 3, 3, 0, 0) }, 525 { HV_SYS_REG_APGAKEYHI_EL1, HVF_SYSREG(2, 3, 3, 0, 1) }, 526 527 { HV_SYS_REG_SPSR_EL1, HVF_SYSREG(4, 0, 3, 0, 0) }, 528 { HV_SYS_REG_ELR_EL1, HVF_SYSREG(4, 0, 3, 0, 1) }, 529 { HV_SYS_REG_SP_EL0, HVF_SYSREG(4, 1, 3, 0, 0) }, 530 { HV_SYS_REG_AFSR0_EL1, HVF_SYSREG(5, 1, 3, 0, 0) }, 531 { HV_SYS_REG_AFSR1_EL1, HVF_SYSREG(5, 1, 3, 0, 1) }, 532 { HV_SYS_REG_ESR_EL1, HVF_SYSREG(5, 2, 3, 0, 0) }, 533 { HV_SYS_REG_FAR_EL1, HVF_SYSREG(6, 0, 3, 0, 0) }, 534 { HV_SYS_REG_PAR_EL1, HVF_SYSREG(7, 4, 3, 0, 0) }, 535 { HV_SYS_REG_MAIR_EL1, HVF_SYSREG(10, 2, 3, 0, 0) }, 536 { HV_SYS_REG_AMAIR_EL1, HVF_SYSREG(10, 3, 3, 0, 0) }, 537 { HV_SYS_REG_VBAR_EL1, HVF_SYSREG(12, 0, 3, 0, 0) }, 538 { HV_SYS_REG_CONTEXTIDR_EL1, HVF_SYSREG(13, 0, 3, 0, 1) }, 539 { HV_SYS_REG_TPIDR_EL1, HVF_SYSREG(13, 0, 3, 0, 4) }, 540 { HV_SYS_REG_CNTKCTL_EL1, HVF_SYSREG(14, 1, 3, 0, 0) }, 541 { HV_SYS_REG_CSSELR_EL1, HVF_SYSREG(0, 0, 3, 2, 0) }, 542 { HV_SYS_REG_TPIDR_EL0, HVF_SYSREG(13, 0, 3, 3, 2) }, 543 { HV_SYS_REG_TPIDRRO_EL0, HVF_SYSREG(13, 0, 3, 3, 3) }, 544 { HV_SYS_REG_CNTV_CTL_EL0, HVF_SYSREG(14, 3, 3, 3, 1) }, 545 { HV_SYS_REG_CNTV_CVAL_EL0, HVF_SYSREG(14, 3, 3, 3, 2) }, 546 { HV_SYS_REG_SP_EL1, HVF_SYSREG(4, 1, 3, 4, 0) }, 547 }; 548 549 int hvf_get_registers(CPUState *cpu) 550 { 551 ARMCPU *arm_cpu = ARM_CPU(cpu); 552 CPUARMState *env = &arm_cpu->env; 553 hv_return_t ret; 554 uint64_t val; 555 hv_simd_fp_uchar16_t fpval; 556 int i; 557 558 for (i = 0; i < ARRAY_SIZE(hvf_reg_match); i++) { 559 ret = hv_vcpu_get_reg(cpu->accel->fd, hvf_reg_match[i].reg, &val); 560 *(uint64_t *)((void *)env + hvf_reg_match[i].offset) = val; 561 assert_hvf_ok(ret); 562 } 563 564 for (i = 0; i < ARRAY_SIZE(hvf_fpreg_match); i++) { 565 ret = hv_vcpu_get_simd_fp_reg(cpu->accel->fd, hvf_fpreg_match[i].reg, 566 &fpval); 567 memcpy((void *)env + hvf_fpreg_match[i].offset, &fpval, sizeof(fpval)); 568 assert_hvf_ok(ret); 569 } 570 571 val = 0; 572 ret = hv_vcpu_get_reg(cpu->accel->fd, HV_REG_FPCR, &val); 573 assert_hvf_ok(ret); 574 vfp_set_fpcr(env, val); 575 576 val = 0; 577 ret = hv_vcpu_get_reg(cpu->accel->fd, HV_REG_FPSR, &val); 578 assert_hvf_ok(ret); 579 vfp_set_fpsr(env, val); 580 581 ret = hv_vcpu_get_reg(cpu->accel->fd, HV_REG_CPSR, &val); 582 assert_hvf_ok(ret); 583 pstate_write(env, val); 584 585 for (i = 0; i < ARRAY_SIZE(hvf_sreg_match); i++) { 586 if (hvf_sreg_match[i].cp_idx == -1) { 587 continue; 588 } 589 590 if (cpu->accel->guest_debug_enabled) { 591 /* Handle debug registers */ 592 switch (hvf_sreg_match[i].reg) { 593 case HV_SYS_REG_DBGBVR0_EL1: 594 case HV_SYS_REG_DBGBCR0_EL1: 595 case HV_SYS_REG_DBGWVR0_EL1: 596 case HV_SYS_REG_DBGWCR0_EL1: 597 case HV_SYS_REG_DBGBVR1_EL1: 598 case HV_SYS_REG_DBGBCR1_EL1: 599 case HV_SYS_REG_DBGWVR1_EL1: 600 case HV_SYS_REG_DBGWCR1_EL1: 601 case HV_SYS_REG_DBGBVR2_EL1: 602 case HV_SYS_REG_DBGBCR2_EL1: 603 case HV_SYS_REG_DBGWVR2_EL1: 604 case HV_SYS_REG_DBGWCR2_EL1: 605 case HV_SYS_REG_DBGBVR3_EL1: 606 case HV_SYS_REG_DBGBCR3_EL1: 607 case HV_SYS_REG_DBGWVR3_EL1: 608 case HV_SYS_REG_DBGWCR3_EL1: 609 case HV_SYS_REG_DBGBVR4_EL1: 610 case HV_SYS_REG_DBGBCR4_EL1: 611 case HV_SYS_REG_DBGWVR4_EL1: 612 case HV_SYS_REG_DBGWCR4_EL1: 613 case HV_SYS_REG_DBGBVR5_EL1: 614 case HV_SYS_REG_DBGBCR5_EL1: 615 case HV_SYS_REG_DBGWVR5_EL1: 616 case HV_SYS_REG_DBGWCR5_EL1: 617 case HV_SYS_REG_DBGBVR6_EL1: 618 case HV_SYS_REG_DBGBCR6_EL1: 619 case HV_SYS_REG_DBGWVR6_EL1: 620 case HV_SYS_REG_DBGWCR6_EL1: 621 case HV_SYS_REG_DBGBVR7_EL1: 622 case HV_SYS_REG_DBGBCR7_EL1: 623 case HV_SYS_REG_DBGWVR7_EL1: 624 case HV_SYS_REG_DBGWCR7_EL1: 625 case HV_SYS_REG_DBGBVR8_EL1: 626 case HV_SYS_REG_DBGBCR8_EL1: 627 case HV_SYS_REG_DBGWVR8_EL1: 628 case HV_SYS_REG_DBGWCR8_EL1: 629 case HV_SYS_REG_DBGBVR9_EL1: 630 case HV_SYS_REG_DBGBCR9_EL1: 631 case HV_SYS_REG_DBGWVR9_EL1: 632 case HV_SYS_REG_DBGWCR9_EL1: 633 case HV_SYS_REG_DBGBVR10_EL1: 634 case HV_SYS_REG_DBGBCR10_EL1: 635 case HV_SYS_REG_DBGWVR10_EL1: 636 case HV_SYS_REG_DBGWCR10_EL1: 637 case HV_SYS_REG_DBGBVR11_EL1: 638 case HV_SYS_REG_DBGBCR11_EL1: 639 case HV_SYS_REG_DBGWVR11_EL1: 640 case HV_SYS_REG_DBGWCR11_EL1: 641 case HV_SYS_REG_DBGBVR12_EL1: 642 case HV_SYS_REG_DBGBCR12_EL1: 643 case HV_SYS_REG_DBGWVR12_EL1: 644 case HV_SYS_REG_DBGWCR12_EL1: 645 case HV_SYS_REG_DBGBVR13_EL1: 646 case HV_SYS_REG_DBGBCR13_EL1: 647 case HV_SYS_REG_DBGWVR13_EL1: 648 case HV_SYS_REG_DBGWCR13_EL1: 649 case HV_SYS_REG_DBGBVR14_EL1: 650 case HV_SYS_REG_DBGBCR14_EL1: 651 case HV_SYS_REG_DBGWVR14_EL1: 652 case HV_SYS_REG_DBGWCR14_EL1: 653 case HV_SYS_REG_DBGBVR15_EL1: 654 case HV_SYS_REG_DBGBCR15_EL1: 655 case HV_SYS_REG_DBGWVR15_EL1: 656 case HV_SYS_REG_DBGWCR15_EL1: { 657 /* 658 * If the guest is being debugged, the vCPU's debug registers 659 * are holding the gdbstub's view of the registers (set in 660 * hvf_arch_update_guest_debug()). 661 * Since the environment is used to store only the guest's view 662 * of the registers, don't update it with the values from the 663 * vCPU but simply keep the values from the previous 664 * environment. 665 */ 666 const ARMCPRegInfo *ri; 667 ri = get_arm_cp_reginfo(arm_cpu->cp_regs, hvf_sreg_match[i].key); 668 val = read_raw_cp_reg(env, ri); 669 670 arm_cpu->cpreg_values[hvf_sreg_match[i].cp_idx] = val; 671 continue; 672 } 673 } 674 } 675 676 ret = hv_vcpu_get_sys_reg(cpu->accel->fd, hvf_sreg_match[i].reg, &val); 677 assert_hvf_ok(ret); 678 679 arm_cpu->cpreg_values[hvf_sreg_match[i].cp_idx] = val; 680 } 681 assert(write_list_to_cpustate(arm_cpu)); 682 683 aarch64_restore_sp(env, arm_current_el(env)); 684 685 return 0; 686 } 687 688 int hvf_put_registers(CPUState *cpu) 689 { 690 ARMCPU *arm_cpu = ARM_CPU(cpu); 691 CPUARMState *env = &arm_cpu->env; 692 hv_return_t ret; 693 uint64_t val; 694 hv_simd_fp_uchar16_t fpval; 695 int i; 696 697 for (i = 0; i < ARRAY_SIZE(hvf_reg_match); i++) { 698 val = *(uint64_t *)((void *)env + hvf_reg_match[i].offset); 699 ret = hv_vcpu_set_reg(cpu->accel->fd, hvf_reg_match[i].reg, val); 700 assert_hvf_ok(ret); 701 } 702 703 for (i = 0; i < ARRAY_SIZE(hvf_fpreg_match); i++) { 704 memcpy(&fpval, (void *)env + hvf_fpreg_match[i].offset, sizeof(fpval)); 705 ret = hv_vcpu_set_simd_fp_reg(cpu->accel->fd, hvf_fpreg_match[i].reg, 706 fpval); 707 assert_hvf_ok(ret); 708 } 709 710 ret = hv_vcpu_set_reg(cpu->accel->fd, HV_REG_FPCR, vfp_get_fpcr(env)); 711 assert_hvf_ok(ret); 712 713 ret = hv_vcpu_set_reg(cpu->accel->fd, HV_REG_FPSR, vfp_get_fpsr(env)); 714 assert_hvf_ok(ret); 715 716 ret = hv_vcpu_set_reg(cpu->accel->fd, HV_REG_CPSR, pstate_read(env)); 717 assert_hvf_ok(ret); 718 719 aarch64_save_sp(env, arm_current_el(env)); 720 721 assert(write_cpustate_to_list(arm_cpu, false)); 722 for (i = 0; i < ARRAY_SIZE(hvf_sreg_match); i++) { 723 if (hvf_sreg_match[i].cp_idx == -1) { 724 continue; 725 } 726 727 if (cpu->accel->guest_debug_enabled) { 728 /* Handle debug registers */ 729 switch (hvf_sreg_match[i].reg) { 730 case HV_SYS_REG_DBGBVR0_EL1: 731 case HV_SYS_REG_DBGBCR0_EL1: 732 case HV_SYS_REG_DBGWVR0_EL1: 733 case HV_SYS_REG_DBGWCR0_EL1: 734 case HV_SYS_REG_DBGBVR1_EL1: 735 case HV_SYS_REG_DBGBCR1_EL1: 736 case HV_SYS_REG_DBGWVR1_EL1: 737 case HV_SYS_REG_DBGWCR1_EL1: 738 case HV_SYS_REG_DBGBVR2_EL1: 739 case HV_SYS_REG_DBGBCR2_EL1: 740 case HV_SYS_REG_DBGWVR2_EL1: 741 case HV_SYS_REG_DBGWCR2_EL1: 742 case HV_SYS_REG_DBGBVR3_EL1: 743 case HV_SYS_REG_DBGBCR3_EL1: 744 case HV_SYS_REG_DBGWVR3_EL1: 745 case HV_SYS_REG_DBGWCR3_EL1: 746 case HV_SYS_REG_DBGBVR4_EL1: 747 case HV_SYS_REG_DBGBCR4_EL1: 748 case HV_SYS_REG_DBGWVR4_EL1: 749 case HV_SYS_REG_DBGWCR4_EL1: 750 case HV_SYS_REG_DBGBVR5_EL1: 751 case HV_SYS_REG_DBGBCR5_EL1: 752 case HV_SYS_REG_DBGWVR5_EL1: 753 case HV_SYS_REG_DBGWCR5_EL1: 754 case HV_SYS_REG_DBGBVR6_EL1: 755 case HV_SYS_REG_DBGBCR6_EL1: 756 case HV_SYS_REG_DBGWVR6_EL1: 757 case HV_SYS_REG_DBGWCR6_EL1: 758 case HV_SYS_REG_DBGBVR7_EL1: 759 case HV_SYS_REG_DBGBCR7_EL1: 760 case HV_SYS_REG_DBGWVR7_EL1: 761 case HV_SYS_REG_DBGWCR7_EL1: 762 case HV_SYS_REG_DBGBVR8_EL1: 763 case HV_SYS_REG_DBGBCR8_EL1: 764 case HV_SYS_REG_DBGWVR8_EL1: 765 case HV_SYS_REG_DBGWCR8_EL1: 766 case HV_SYS_REG_DBGBVR9_EL1: 767 case HV_SYS_REG_DBGBCR9_EL1: 768 case HV_SYS_REG_DBGWVR9_EL1: 769 case HV_SYS_REG_DBGWCR9_EL1: 770 case HV_SYS_REG_DBGBVR10_EL1: 771 case HV_SYS_REG_DBGBCR10_EL1: 772 case HV_SYS_REG_DBGWVR10_EL1: 773 case HV_SYS_REG_DBGWCR10_EL1: 774 case HV_SYS_REG_DBGBVR11_EL1: 775 case HV_SYS_REG_DBGBCR11_EL1: 776 case HV_SYS_REG_DBGWVR11_EL1: 777 case HV_SYS_REG_DBGWCR11_EL1: 778 case HV_SYS_REG_DBGBVR12_EL1: 779 case HV_SYS_REG_DBGBCR12_EL1: 780 case HV_SYS_REG_DBGWVR12_EL1: 781 case HV_SYS_REG_DBGWCR12_EL1: 782 case HV_SYS_REG_DBGBVR13_EL1: 783 case HV_SYS_REG_DBGBCR13_EL1: 784 case HV_SYS_REG_DBGWVR13_EL1: 785 case HV_SYS_REG_DBGWCR13_EL1: 786 case HV_SYS_REG_DBGBVR14_EL1: 787 case HV_SYS_REG_DBGBCR14_EL1: 788 case HV_SYS_REG_DBGWVR14_EL1: 789 case HV_SYS_REG_DBGWCR14_EL1: 790 case HV_SYS_REG_DBGBVR15_EL1: 791 case HV_SYS_REG_DBGBCR15_EL1: 792 case HV_SYS_REG_DBGWVR15_EL1: 793 case HV_SYS_REG_DBGWCR15_EL1: 794 /* 795 * If the guest is being debugged, the vCPU's debug registers 796 * are already holding the gdbstub's view of the registers (set 797 * in hvf_arch_update_guest_debug()). 798 */ 799 continue; 800 } 801 } 802 803 val = arm_cpu->cpreg_values[hvf_sreg_match[i].cp_idx]; 804 ret = hv_vcpu_set_sys_reg(cpu->accel->fd, hvf_sreg_match[i].reg, val); 805 assert_hvf_ok(ret); 806 } 807 808 ret = hv_vcpu_set_vtimer_offset(cpu->accel->fd, hvf_state->vtimer_offset); 809 assert_hvf_ok(ret); 810 811 return 0; 812 } 813 814 static void flush_cpu_state(CPUState *cpu) 815 { 816 if (cpu->vcpu_dirty) { 817 hvf_put_registers(cpu); 818 cpu->vcpu_dirty = false; 819 } 820 } 821 822 static void hvf_set_reg(CPUState *cpu, int rt, uint64_t val) 823 { 824 hv_return_t r; 825 826 flush_cpu_state(cpu); 827 828 if (rt < 31) { 829 r = hv_vcpu_set_reg(cpu->accel->fd, HV_REG_X0 + rt, val); 830 assert_hvf_ok(r); 831 } 832 } 833 834 static uint64_t hvf_get_reg(CPUState *cpu, int rt) 835 { 836 uint64_t val = 0; 837 hv_return_t r; 838 839 flush_cpu_state(cpu); 840 841 if (rt < 31) { 842 r = hv_vcpu_get_reg(cpu->accel->fd, HV_REG_X0 + rt, &val); 843 assert_hvf_ok(r); 844 } 845 846 return val; 847 } 848 849 static void clamp_id_aa64mmfr0_parange_to_ipa_size(ARMISARegisters *isar) 850 { 851 uint32_t ipa_size = chosen_ipa_bit_size ? 852 chosen_ipa_bit_size : hvf_arm_get_max_ipa_bit_size(); 853 uint64_t id_aa64mmfr0; 854 855 /* Clamp down the PARange to the IPA size the kernel supports. */ 856 uint8_t index = round_down_to_parange_index(ipa_size); 857 id_aa64mmfr0 = GET_IDREG(isar, ID_AA64MMFR0); 858 id_aa64mmfr0 = (id_aa64mmfr0 & ~R_ID_AA64MMFR0_PARANGE_MASK) | index; 859 SET_IDREG(isar, ID_AA64MMFR0, id_aa64mmfr0); 860 } 861 862 static bool hvf_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf) 863 { 864 ARMISARegisters host_isar = {}; 865 const struct isar_regs { 866 int reg; 867 uint64_t *val; 868 } regs[] = { 869 { HV_SYS_REG_ID_AA64PFR0_EL1, &host_isar.idregs[ID_AA64PFR0_EL1_IDX] }, 870 { HV_SYS_REG_ID_AA64PFR1_EL1, &host_isar.idregs[ID_AA64PFR1_EL1_IDX] }, 871 { HV_SYS_REG_ID_AA64DFR0_EL1, &host_isar.idregs[ID_AA64DFR0_EL1_IDX] }, 872 { HV_SYS_REG_ID_AA64DFR1_EL1, &host_isar.idregs[ID_AA64DFR1_EL1_IDX] }, 873 { HV_SYS_REG_ID_AA64ISAR0_EL1, &host_isar.idregs[ID_AA64ISAR0_EL1_IDX] }, 874 { HV_SYS_REG_ID_AA64ISAR1_EL1, &host_isar.idregs[ID_AA64ISAR1_EL1_IDX] }, 875 /* Add ID_AA64ISAR2_EL1 here when HVF supports it */ 876 { HV_SYS_REG_ID_AA64MMFR0_EL1, &host_isar.idregs[ID_AA64MMFR0_EL1_IDX] }, 877 { HV_SYS_REG_ID_AA64MMFR1_EL1, &host_isar.idregs[ID_AA64MMFR1_EL1_IDX] }, 878 { HV_SYS_REG_ID_AA64MMFR2_EL1, &host_isar.idregs[ID_AA64MMFR2_EL1_IDX] }, 879 /* Add ID_AA64MMFR3_EL1 here when HVF supports it */ 880 }; 881 hv_vcpu_t fd; 882 hv_return_t r = HV_SUCCESS; 883 hv_vcpu_exit_t *exit; 884 int i; 885 886 ahcf->dtb_compatible = "arm,armv8"; 887 ahcf->features = (1ULL << ARM_FEATURE_V8) | 888 (1ULL << ARM_FEATURE_NEON) | 889 (1ULL << ARM_FEATURE_AARCH64) | 890 (1ULL << ARM_FEATURE_PMU) | 891 (1ULL << ARM_FEATURE_GENERIC_TIMER); 892 893 /* We set up a small vcpu to extract host registers */ 894 895 if (hv_vcpu_create(&fd, &exit, NULL) != HV_SUCCESS) { 896 return false; 897 } 898 899 for (i = 0; i < ARRAY_SIZE(regs); i++) { 900 r |= hv_vcpu_get_sys_reg(fd, regs[i].reg, regs[i].val); 901 } 902 r |= hv_vcpu_get_sys_reg(fd, HV_SYS_REG_MIDR_EL1, &ahcf->midr); 903 r |= hv_vcpu_destroy(fd); 904 905 clamp_id_aa64mmfr0_parange_to_ipa_size(&host_isar); 906 907 /* 908 * Disable SME, which is not properly handled by QEMU hvf yet. 909 * To allow this through we would need to: 910 * - make sure that the SME state is correctly handled in the 911 * get_registers/put_registers functions 912 * - get the SME-specific CPU properties to work with accelerators 913 * other than TCG 914 * - fix any assumptions we made that SME implies SVE (since 915 * on the M4 there is SME but not SVE) 916 */ 917 SET_IDREG(&host_isar, ID_AA64PFR1, 918 GET_IDREG(&host_isar, ID_AA64PFR1) & ~R_ID_AA64PFR1_SME_MASK); 919 920 ahcf->isar = host_isar; 921 922 /* 923 * A scratch vCPU returns SCTLR 0, so let's fill our default with the M1 924 * boot SCTLR from https://github.com/AsahiLinux/m1n1/issues/97 925 */ 926 ahcf->reset_sctlr = 0x30100180; 927 /* 928 * SPAN is disabled by default when SCTLR.SPAN=1. To improve compatibility, 929 * let's disable it on boot and then allow guest software to turn it on by 930 * setting it to 0. 931 */ 932 ahcf->reset_sctlr |= 0x00800000; 933 934 /* Make sure we don't advertise AArch32 support for EL0/EL1 */ 935 if ((GET_IDREG(&host_isar, ID_AA64PFR0) & 0xff) != 0x11) { 936 return false; 937 } 938 939 return r == HV_SUCCESS; 940 } 941 942 uint32_t hvf_arm_get_default_ipa_bit_size(void) 943 { 944 uint32_t default_ipa_size; 945 hv_return_t ret = hv_vm_config_get_default_ipa_size(&default_ipa_size); 946 assert_hvf_ok(ret); 947 948 return default_ipa_size; 949 } 950 951 uint32_t hvf_arm_get_max_ipa_bit_size(void) 952 { 953 uint32_t max_ipa_size; 954 hv_return_t ret = hv_vm_config_get_max_ipa_size(&max_ipa_size); 955 assert_hvf_ok(ret); 956 957 /* 958 * We clamp any IPA size we want to back the VM with to a valid PARange 959 * value so the guest doesn't try and map memory outside of the valid range. 960 * This logic just clamps the passed in IPA bit size to the first valid 961 * PARange value <= to it. 962 */ 963 return round_down_to_parange_bit_size(max_ipa_size); 964 } 965 966 void hvf_arm_set_cpu_features_from_host(ARMCPU *cpu) 967 { 968 if (!arm_host_cpu_features.dtb_compatible) { 969 if (!hvf_enabled() || 970 !hvf_arm_get_host_cpu_features(&arm_host_cpu_features)) { 971 /* 972 * We can't report this error yet, so flag that we need to 973 * in arm_cpu_realizefn(). 974 */ 975 cpu->host_cpu_probe_failed = true; 976 return; 977 } 978 } 979 980 cpu->dtb_compatible = arm_host_cpu_features.dtb_compatible; 981 cpu->isar = arm_host_cpu_features.isar; 982 cpu->env.features = arm_host_cpu_features.features; 983 cpu->midr = arm_host_cpu_features.midr; 984 cpu->reset_sctlr = arm_host_cpu_features.reset_sctlr; 985 } 986 987 void hvf_arch_vcpu_destroy(CPUState *cpu) 988 { 989 } 990 991 hv_return_t hvf_arch_vm_create(MachineState *ms, uint32_t pa_range) 992 { 993 hv_return_t ret; 994 hv_vm_config_t config = hv_vm_config_create(); 995 996 ret = hv_vm_config_set_ipa_size(config, pa_range); 997 if (ret != HV_SUCCESS) { 998 goto cleanup; 999 } 1000 chosen_ipa_bit_size = pa_range; 1001 1002 ret = hv_vm_create(config); 1003 1004 cleanup: 1005 os_release(config); 1006 1007 return ret; 1008 } 1009 1010 int hvf_arch_init_vcpu(CPUState *cpu) 1011 { 1012 ARMCPU *arm_cpu = ARM_CPU(cpu); 1013 CPUARMState *env = &arm_cpu->env; 1014 uint32_t sregs_match_len = ARRAY_SIZE(hvf_sreg_match); 1015 uint32_t sregs_cnt = 0; 1016 uint64_t pfr; 1017 hv_return_t ret; 1018 int i; 1019 1020 env->aarch64 = true; 1021 asm volatile("mrs %0, cntfrq_el0" : "=r"(arm_cpu->gt_cntfrq_hz)); 1022 1023 /* Allocate enough space for our sysreg sync */ 1024 arm_cpu->cpreg_indexes = g_renew(uint64_t, arm_cpu->cpreg_indexes, 1025 sregs_match_len); 1026 arm_cpu->cpreg_values = g_renew(uint64_t, arm_cpu->cpreg_values, 1027 sregs_match_len); 1028 arm_cpu->cpreg_vmstate_indexes = g_renew(uint64_t, 1029 arm_cpu->cpreg_vmstate_indexes, 1030 sregs_match_len); 1031 arm_cpu->cpreg_vmstate_values = g_renew(uint64_t, 1032 arm_cpu->cpreg_vmstate_values, 1033 sregs_match_len); 1034 1035 memset(arm_cpu->cpreg_values, 0, sregs_match_len * sizeof(uint64_t)); 1036 1037 /* Populate cp list for all known sysregs */ 1038 for (i = 0; i < sregs_match_len; i++) { 1039 const ARMCPRegInfo *ri; 1040 uint32_t key = hvf_sreg_match[i].key; 1041 1042 ri = get_arm_cp_reginfo(arm_cpu->cp_regs, key); 1043 if (ri) { 1044 assert(!(ri->type & ARM_CP_NO_RAW)); 1045 hvf_sreg_match[i].cp_idx = sregs_cnt; 1046 arm_cpu->cpreg_indexes[sregs_cnt++] = cpreg_to_kvm_id(key); 1047 } else { 1048 hvf_sreg_match[i].cp_idx = -1; 1049 } 1050 } 1051 arm_cpu->cpreg_array_len = sregs_cnt; 1052 arm_cpu->cpreg_vmstate_array_len = sregs_cnt; 1053 1054 assert(write_cpustate_to_list(arm_cpu, false)); 1055 1056 /* Set CP_NO_RAW system registers on init */ 1057 ret = hv_vcpu_set_sys_reg(cpu->accel->fd, HV_SYS_REG_MIDR_EL1, 1058 arm_cpu->midr); 1059 assert_hvf_ok(ret); 1060 1061 ret = hv_vcpu_set_sys_reg(cpu->accel->fd, HV_SYS_REG_MPIDR_EL1, 1062 arm_cpu->mp_affinity); 1063 assert_hvf_ok(ret); 1064 1065 ret = hv_vcpu_get_sys_reg(cpu->accel->fd, HV_SYS_REG_ID_AA64PFR0_EL1, &pfr); 1066 assert_hvf_ok(ret); 1067 pfr |= env->gicv3state ? (1 << 24) : 0; 1068 ret = hv_vcpu_set_sys_reg(cpu->accel->fd, HV_SYS_REG_ID_AA64PFR0_EL1, pfr); 1069 assert_hvf_ok(ret); 1070 1071 /* We're limited to underlying hardware caps, override internal versions */ 1072 ret = hv_vcpu_get_sys_reg(cpu->accel->fd, HV_SYS_REG_ID_AA64MMFR0_EL1, 1073 &arm_cpu->isar.idregs[ID_AA64MMFR0_EL1_IDX]); 1074 assert_hvf_ok(ret); 1075 1076 clamp_id_aa64mmfr0_parange_to_ipa_size(&arm_cpu->isar); 1077 ret = hv_vcpu_set_sys_reg(cpu->accel->fd, HV_SYS_REG_ID_AA64MMFR0_EL1, 1078 arm_cpu->isar.idregs[ID_AA64MMFR0_EL1_IDX]); 1079 assert_hvf_ok(ret); 1080 1081 return 0; 1082 } 1083 1084 void hvf_kick_vcpu_thread(CPUState *cpu) 1085 { 1086 cpus_kick_thread(cpu); 1087 hv_vcpus_exit(&cpu->accel->fd, 1); 1088 } 1089 1090 static void hvf_raise_exception(CPUState *cpu, uint32_t excp, 1091 uint32_t syndrome, int target_el) 1092 { 1093 ARMCPU *arm_cpu = ARM_CPU(cpu); 1094 CPUARMState *env = &arm_cpu->env; 1095 1096 cpu->exception_index = excp; 1097 env->exception.target_el = target_el; 1098 env->exception.syndrome = syndrome; 1099 1100 arm_cpu_do_interrupt(cpu); 1101 } 1102 1103 static void hvf_psci_cpu_off(ARMCPU *arm_cpu) 1104 { 1105 int32_t ret = arm_set_cpu_off(arm_cpu_mp_affinity(arm_cpu)); 1106 assert(ret == QEMU_ARM_POWERCTL_RET_SUCCESS); 1107 } 1108 1109 /* 1110 * Handle a PSCI call. 1111 * 1112 * Returns 0 on success 1113 * -1 when the PSCI call is unknown, 1114 */ 1115 static bool hvf_handle_psci_call(CPUState *cpu) 1116 { 1117 ARMCPU *arm_cpu = ARM_CPU(cpu); 1118 CPUARMState *env = &arm_cpu->env; 1119 uint64_t param[4] = { 1120 env->xregs[0], 1121 env->xregs[1], 1122 env->xregs[2], 1123 env->xregs[3] 1124 }; 1125 uint64_t context_id, mpidr; 1126 bool target_aarch64 = true; 1127 CPUState *target_cpu_state; 1128 ARMCPU *target_cpu; 1129 target_ulong entry; 1130 int target_el = 1; 1131 int32_t ret = 0; 1132 1133 trace_hvf_psci_call(param[0], param[1], param[2], param[3], 1134 arm_cpu_mp_affinity(arm_cpu)); 1135 1136 switch (param[0]) { 1137 case QEMU_PSCI_0_2_FN_PSCI_VERSION: 1138 ret = QEMU_PSCI_VERSION_1_1; 1139 break; 1140 case QEMU_PSCI_0_2_FN_MIGRATE_INFO_TYPE: 1141 ret = QEMU_PSCI_0_2_RET_TOS_MIGRATION_NOT_REQUIRED; /* No trusted OS */ 1142 break; 1143 case QEMU_PSCI_0_2_FN_AFFINITY_INFO: 1144 case QEMU_PSCI_0_2_FN64_AFFINITY_INFO: 1145 mpidr = param[1]; 1146 1147 switch (param[2]) { 1148 case 0: 1149 target_cpu_state = arm_get_cpu_by_id(mpidr); 1150 if (!target_cpu_state) { 1151 ret = QEMU_PSCI_RET_INVALID_PARAMS; 1152 break; 1153 } 1154 target_cpu = ARM_CPU(target_cpu_state); 1155 1156 ret = target_cpu->power_state; 1157 break; 1158 default: 1159 /* Everything above affinity level 0 is always on. */ 1160 ret = 0; 1161 } 1162 break; 1163 case QEMU_PSCI_0_2_FN_SYSTEM_RESET: 1164 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 1165 /* 1166 * QEMU reset and shutdown are async requests, but PSCI 1167 * mandates that we never return from the reset/shutdown 1168 * call, so power the CPU off now so it doesn't execute 1169 * anything further. 1170 */ 1171 hvf_psci_cpu_off(arm_cpu); 1172 break; 1173 case QEMU_PSCI_0_2_FN_SYSTEM_OFF: 1174 qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); 1175 hvf_psci_cpu_off(arm_cpu); 1176 break; 1177 case QEMU_PSCI_0_1_FN_CPU_ON: 1178 case QEMU_PSCI_0_2_FN_CPU_ON: 1179 case QEMU_PSCI_0_2_FN64_CPU_ON: 1180 mpidr = param[1]; 1181 entry = param[2]; 1182 context_id = param[3]; 1183 ret = arm_set_cpu_on(mpidr, entry, context_id, 1184 target_el, target_aarch64); 1185 break; 1186 case QEMU_PSCI_0_1_FN_CPU_OFF: 1187 case QEMU_PSCI_0_2_FN_CPU_OFF: 1188 hvf_psci_cpu_off(arm_cpu); 1189 break; 1190 case QEMU_PSCI_0_1_FN_CPU_SUSPEND: 1191 case QEMU_PSCI_0_2_FN_CPU_SUSPEND: 1192 case QEMU_PSCI_0_2_FN64_CPU_SUSPEND: 1193 /* Affinity levels are not supported in QEMU */ 1194 if (param[1] & 0xfffe0000) { 1195 ret = QEMU_PSCI_RET_INVALID_PARAMS; 1196 break; 1197 } 1198 /* Powerdown is not supported, we always go into WFI */ 1199 env->xregs[0] = 0; 1200 hvf_wfi(cpu); 1201 break; 1202 case QEMU_PSCI_0_1_FN_MIGRATE: 1203 case QEMU_PSCI_0_2_FN_MIGRATE: 1204 ret = QEMU_PSCI_RET_NOT_SUPPORTED; 1205 break; 1206 case QEMU_PSCI_1_0_FN_PSCI_FEATURES: 1207 switch (param[1]) { 1208 case QEMU_PSCI_0_2_FN_PSCI_VERSION: 1209 case QEMU_PSCI_0_2_FN_MIGRATE_INFO_TYPE: 1210 case QEMU_PSCI_0_2_FN_AFFINITY_INFO: 1211 case QEMU_PSCI_0_2_FN64_AFFINITY_INFO: 1212 case QEMU_PSCI_0_2_FN_SYSTEM_RESET: 1213 case QEMU_PSCI_0_2_FN_SYSTEM_OFF: 1214 case QEMU_PSCI_0_1_FN_CPU_ON: 1215 case QEMU_PSCI_0_2_FN_CPU_ON: 1216 case QEMU_PSCI_0_2_FN64_CPU_ON: 1217 case QEMU_PSCI_0_1_FN_CPU_OFF: 1218 case QEMU_PSCI_0_2_FN_CPU_OFF: 1219 case QEMU_PSCI_0_1_FN_CPU_SUSPEND: 1220 case QEMU_PSCI_0_2_FN_CPU_SUSPEND: 1221 case QEMU_PSCI_0_2_FN64_CPU_SUSPEND: 1222 case QEMU_PSCI_1_0_FN_PSCI_FEATURES: 1223 ret = 0; 1224 break; 1225 case QEMU_PSCI_0_1_FN_MIGRATE: 1226 case QEMU_PSCI_0_2_FN_MIGRATE: 1227 default: 1228 ret = QEMU_PSCI_RET_NOT_SUPPORTED; 1229 } 1230 break; 1231 default: 1232 return false; 1233 } 1234 1235 env->xregs[0] = ret; 1236 return true; 1237 } 1238 1239 static bool is_id_sysreg(uint32_t reg) 1240 { 1241 return SYSREG_OP0(reg) == 3 && 1242 SYSREG_OP1(reg) == 0 && 1243 SYSREG_CRN(reg) == 0 && 1244 SYSREG_CRM(reg) >= 1 && 1245 SYSREG_CRM(reg) < 8; 1246 } 1247 1248 static uint32_t hvf_reg2cp_reg(uint32_t reg) 1249 { 1250 return ENCODE_AA64_CP_REG(CP_REG_ARM64_SYSREG_CP, 1251 (reg >> SYSREG_CRN_SHIFT) & SYSREG_CRN_MASK, 1252 (reg >> SYSREG_CRM_SHIFT) & SYSREG_CRM_MASK, 1253 (reg >> SYSREG_OP0_SHIFT) & SYSREG_OP0_MASK, 1254 (reg >> SYSREG_OP1_SHIFT) & SYSREG_OP1_MASK, 1255 (reg >> SYSREG_OP2_SHIFT) & SYSREG_OP2_MASK); 1256 } 1257 1258 static bool hvf_sysreg_read_cp(CPUState *cpu, uint32_t reg, uint64_t *val) 1259 { 1260 ARMCPU *arm_cpu = ARM_CPU(cpu); 1261 CPUARMState *env = &arm_cpu->env; 1262 const ARMCPRegInfo *ri; 1263 1264 ri = get_arm_cp_reginfo(arm_cpu->cp_regs, hvf_reg2cp_reg(reg)); 1265 if (ri) { 1266 if (ri->accessfn) { 1267 if (ri->accessfn(env, ri, true) != CP_ACCESS_OK) { 1268 return false; 1269 } 1270 } 1271 if (ri->type & ARM_CP_CONST) { 1272 *val = ri->resetvalue; 1273 } else if (ri->readfn) { 1274 *val = ri->readfn(env, ri); 1275 } else { 1276 *val = CPREG_FIELD64(env, ri); 1277 } 1278 trace_hvf_vgic_read(ri->name, *val); 1279 return true; 1280 } 1281 1282 return false; 1283 } 1284 1285 static int hvf_sysreg_read(CPUState *cpu, uint32_t reg, uint64_t *val) 1286 { 1287 ARMCPU *arm_cpu = ARM_CPU(cpu); 1288 CPUARMState *env = &arm_cpu->env; 1289 1290 if (arm_feature(env, ARM_FEATURE_PMU)) { 1291 switch (reg) { 1292 case SYSREG_PMCR_EL0: 1293 *val = env->cp15.c9_pmcr; 1294 return 0; 1295 case SYSREG_PMCCNTR_EL0: 1296 pmu_op_start(env); 1297 *val = env->cp15.c15_ccnt; 1298 pmu_op_finish(env); 1299 return 0; 1300 case SYSREG_PMCNTENCLR_EL0: 1301 *val = env->cp15.c9_pmcnten; 1302 return 0; 1303 case SYSREG_PMOVSCLR_EL0: 1304 *val = env->cp15.c9_pmovsr; 1305 return 0; 1306 case SYSREG_PMSELR_EL0: 1307 *val = env->cp15.c9_pmselr; 1308 return 0; 1309 case SYSREG_PMINTENCLR_EL1: 1310 *val = env->cp15.c9_pminten; 1311 return 0; 1312 case SYSREG_PMCCFILTR_EL0: 1313 *val = env->cp15.pmccfiltr_el0; 1314 return 0; 1315 case SYSREG_PMCNTENSET_EL0: 1316 *val = env->cp15.c9_pmcnten; 1317 return 0; 1318 case SYSREG_PMUSERENR_EL0: 1319 *val = env->cp15.c9_pmuserenr; 1320 return 0; 1321 case SYSREG_PMCEID0_EL0: 1322 case SYSREG_PMCEID1_EL0: 1323 /* We can't really count anything yet, declare all events invalid */ 1324 *val = 0; 1325 return 0; 1326 } 1327 } 1328 1329 switch (reg) { 1330 case SYSREG_CNTPCT_EL0: 1331 *val = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) / 1332 gt_cntfrq_period_ns(arm_cpu); 1333 return 0; 1334 case SYSREG_OSLSR_EL1: 1335 *val = env->cp15.oslsr_el1; 1336 return 0; 1337 case SYSREG_OSDLR_EL1: 1338 /* Dummy register */ 1339 return 0; 1340 case SYSREG_ICC_AP0R0_EL1: 1341 case SYSREG_ICC_AP0R1_EL1: 1342 case SYSREG_ICC_AP0R2_EL1: 1343 case SYSREG_ICC_AP0R3_EL1: 1344 case SYSREG_ICC_AP1R0_EL1: 1345 case SYSREG_ICC_AP1R1_EL1: 1346 case SYSREG_ICC_AP1R2_EL1: 1347 case SYSREG_ICC_AP1R3_EL1: 1348 case SYSREG_ICC_ASGI1R_EL1: 1349 case SYSREG_ICC_BPR0_EL1: 1350 case SYSREG_ICC_BPR1_EL1: 1351 case SYSREG_ICC_DIR_EL1: 1352 case SYSREG_ICC_EOIR0_EL1: 1353 case SYSREG_ICC_EOIR1_EL1: 1354 case SYSREG_ICC_HPPIR0_EL1: 1355 case SYSREG_ICC_HPPIR1_EL1: 1356 case SYSREG_ICC_IAR0_EL1: 1357 case SYSREG_ICC_IAR1_EL1: 1358 case SYSREG_ICC_IGRPEN0_EL1: 1359 case SYSREG_ICC_IGRPEN1_EL1: 1360 case SYSREG_ICC_PMR_EL1: 1361 case SYSREG_ICC_SGI0R_EL1: 1362 case SYSREG_ICC_SGI1R_EL1: 1363 case SYSREG_ICC_SRE_EL1: 1364 case SYSREG_ICC_CTLR_EL1: 1365 /* Call the TCG sysreg handler. This is only safe for GICv3 regs. */ 1366 if (hvf_sysreg_read_cp(cpu, reg, val)) { 1367 return 0; 1368 } 1369 break; 1370 case SYSREG_DBGBVR0_EL1: 1371 case SYSREG_DBGBVR1_EL1: 1372 case SYSREG_DBGBVR2_EL1: 1373 case SYSREG_DBGBVR3_EL1: 1374 case SYSREG_DBGBVR4_EL1: 1375 case SYSREG_DBGBVR5_EL1: 1376 case SYSREG_DBGBVR6_EL1: 1377 case SYSREG_DBGBVR7_EL1: 1378 case SYSREG_DBGBVR8_EL1: 1379 case SYSREG_DBGBVR9_EL1: 1380 case SYSREG_DBGBVR10_EL1: 1381 case SYSREG_DBGBVR11_EL1: 1382 case SYSREG_DBGBVR12_EL1: 1383 case SYSREG_DBGBVR13_EL1: 1384 case SYSREG_DBGBVR14_EL1: 1385 case SYSREG_DBGBVR15_EL1: 1386 *val = env->cp15.dbgbvr[SYSREG_CRM(reg)]; 1387 return 0; 1388 case SYSREG_DBGBCR0_EL1: 1389 case SYSREG_DBGBCR1_EL1: 1390 case SYSREG_DBGBCR2_EL1: 1391 case SYSREG_DBGBCR3_EL1: 1392 case SYSREG_DBGBCR4_EL1: 1393 case SYSREG_DBGBCR5_EL1: 1394 case SYSREG_DBGBCR6_EL1: 1395 case SYSREG_DBGBCR7_EL1: 1396 case SYSREG_DBGBCR8_EL1: 1397 case SYSREG_DBGBCR9_EL1: 1398 case SYSREG_DBGBCR10_EL1: 1399 case SYSREG_DBGBCR11_EL1: 1400 case SYSREG_DBGBCR12_EL1: 1401 case SYSREG_DBGBCR13_EL1: 1402 case SYSREG_DBGBCR14_EL1: 1403 case SYSREG_DBGBCR15_EL1: 1404 *val = env->cp15.dbgbcr[SYSREG_CRM(reg)]; 1405 return 0; 1406 case SYSREG_DBGWVR0_EL1: 1407 case SYSREG_DBGWVR1_EL1: 1408 case SYSREG_DBGWVR2_EL1: 1409 case SYSREG_DBGWVR3_EL1: 1410 case SYSREG_DBGWVR4_EL1: 1411 case SYSREG_DBGWVR5_EL1: 1412 case SYSREG_DBGWVR6_EL1: 1413 case SYSREG_DBGWVR7_EL1: 1414 case SYSREG_DBGWVR8_EL1: 1415 case SYSREG_DBGWVR9_EL1: 1416 case SYSREG_DBGWVR10_EL1: 1417 case SYSREG_DBGWVR11_EL1: 1418 case SYSREG_DBGWVR12_EL1: 1419 case SYSREG_DBGWVR13_EL1: 1420 case SYSREG_DBGWVR14_EL1: 1421 case SYSREG_DBGWVR15_EL1: 1422 *val = env->cp15.dbgwvr[SYSREG_CRM(reg)]; 1423 return 0; 1424 case SYSREG_DBGWCR0_EL1: 1425 case SYSREG_DBGWCR1_EL1: 1426 case SYSREG_DBGWCR2_EL1: 1427 case SYSREG_DBGWCR3_EL1: 1428 case SYSREG_DBGWCR4_EL1: 1429 case SYSREG_DBGWCR5_EL1: 1430 case SYSREG_DBGWCR6_EL1: 1431 case SYSREG_DBGWCR7_EL1: 1432 case SYSREG_DBGWCR8_EL1: 1433 case SYSREG_DBGWCR9_EL1: 1434 case SYSREG_DBGWCR10_EL1: 1435 case SYSREG_DBGWCR11_EL1: 1436 case SYSREG_DBGWCR12_EL1: 1437 case SYSREG_DBGWCR13_EL1: 1438 case SYSREG_DBGWCR14_EL1: 1439 case SYSREG_DBGWCR15_EL1: 1440 *val = env->cp15.dbgwcr[SYSREG_CRM(reg)]; 1441 return 0; 1442 default: 1443 if (is_id_sysreg(reg)) { 1444 /* ID system registers read as RES0 */ 1445 *val = 0; 1446 return 0; 1447 } 1448 } 1449 1450 cpu_synchronize_state(cpu); 1451 trace_hvf_unhandled_sysreg_read(env->pc, reg, 1452 SYSREG_OP0(reg), 1453 SYSREG_OP1(reg), 1454 SYSREG_CRN(reg), 1455 SYSREG_CRM(reg), 1456 SYSREG_OP2(reg)); 1457 hvf_raise_exception(cpu, EXCP_UDEF, syn_uncategorized(), 1); 1458 return 1; 1459 } 1460 1461 static void pmu_update_irq(CPUARMState *env) 1462 { 1463 ARMCPU *cpu = env_archcpu(env); 1464 qemu_set_irq(cpu->pmu_interrupt, (env->cp15.c9_pmcr & PMCRE) && 1465 (env->cp15.c9_pminten & env->cp15.c9_pmovsr)); 1466 } 1467 1468 static bool pmu_event_supported(uint16_t number) 1469 { 1470 return false; 1471 } 1472 1473 /* Returns true if the counter (pass 31 for PMCCNTR) should count events using 1474 * the current EL, security state, and register configuration. 1475 */ 1476 static bool pmu_counter_enabled(CPUARMState *env, uint8_t counter) 1477 { 1478 uint64_t filter; 1479 bool enabled, filtered = true; 1480 int el = arm_current_el(env); 1481 1482 enabled = (env->cp15.c9_pmcr & PMCRE) && 1483 (env->cp15.c9_pmcnten & (1 << counter)); 1484 1485 if (counter == 31) { 1486 filter = env->cp15.pmccfiltr_el0; 1487 } else { 1488 filter = env->cp15.c14_pmevtyper[counter]; 1489 } 1490 1491 if (el == 0) { 1492 filtered = filter & PMXEVTYPER_U; 1493 } else if (el == 1) { 1494 filtered = filter & PMXEVTYPER_P; 1495 } 1496 1497 if (counter != 31) { 1498 /* 1499 * If not checking PMCCNTR, ensure the counter is setup to an event we 1500 * support 1501 */ 1502 uint16_t event = filter & PMXEVTYPER_EVTCOUNT; 1503 if (!pmu_event_supported(event)) { 1504 return false; 1505 } 1506 } 1507 1508 return enabled && !filtered; 1509 } 1510 1511 static void pmswinc_write(CPUARMState *env, uint64_t value) 1512 { 1513 unsigned int i; 1514 for (i = 0; i < pmu_num_counters(env); i++) { 1515 /* Increment a counter's count iff: */ 1516 if ((value & (1 << i)) && /* counter's bit is set */ 1517 /* counter is enabled and not filtered */ 1518 pmu_counter_enabled(env, i) && 1519 /* counter is SW_INCR */ 1520 (env->cp15.c14_pmevtyper[i] & PMXEVTYPER_EVTCOUNT) == 0x0) { 1521 /* 1522 * Detect if this write causes an overflow since we can't predict 1523 * PMSWINC overflows like we can for other events 1524 */ 1525 uint32_t new_pmswinc = env->cp15.c14_pmevcntr[i] + 1; 1526 1527 if (env->cp15.c14_pmevcntr[i] & ~new_pmswinc & INT32_MIN) { 1528 env->cp15.c9_pmovsr |= (1 << i); 1529 pmu_update_irq(env); 1530 } 1531 1532 env->cp15.c14_pmevcntr[i] = new_pmswinc; 1533 } 1534 } 1535 } 1536 1537 static bool hvf_sysreg_write_cp(CPUState *cpu, uint32_t reg, uint64_t val) 1538 { 1539 ARMCPU *arm_cpu = ARM_CPU(cpu); 1540 CPUARMState *env = &arm_cpu->env; 1541 const ARMCPRegInfo *ri; 1542 1543 ri = get_arm_cp_reginfo(arm_cpu->cp_regs, hvf_reg2cp_reg(reg)); 1544 1545 if (ri) { 1546 if (ri->accessfn) { 1547 if (ri->accessfn(env, ri, false) != CP_ACCESS_OK) { 1548 return false; 1549 } 1550 } 1551 if (ri->writefn) { 1552 ri->writefn(env, ri, val); 1553 } else { 1554 CPREG_FIELD64(env, ri) = val; 1555 } 1556 1557 trace_hvf_vgic_write(ri->name, val); 1558 return true; 1559 } 1560 1561 return false; 1562 } 1563 1564 static int hvf_sysreg_write(CPUState *cpu, uint32_t reg, uint64_t val) 1565 { 1566 ARMCPU *arm_cpu = ARM_CPU(cpu); 1567 CPUARMState *env = &arm_cpu->env; 1568 1569 trace_hvf_sysreg_write(reg, 1570 SYSREG_OP0(reg), 1571 SYSREG_OP1(reg), 1572 SYSREG_CRN(reg), 1573 SYSREG_CRM(reg), 1574 SYSREG_OP2(reg), 1575 val); 1576 1577 if (arm_feature(env, ARM_FEATURE_PMU)) { 1578 switch (reg) { 1579 case SYSREG_PMCCNTR_EL0: 1580 pmu_op_start(env); 1581 env->cp15.c15_ccnt = val; 1582 pmu_op_finish(env); 1583 return 0; 1584 case SYSREG_PMCR_EL0: 1585 pmu_op_start(env); 1586 1587 if (val & PMCRC) { 1588 /* The counter has been reset */ 1589 env->cp15.c15_ccnt = 0; 1590 } 1591 1592 if (val & PMCRP) { 1593 unsigned int i; 1594 for (i = 0; i < pmu_num_counters(env); i++) { 1595 env->cp15.c14_pmevcntr[i] = 0; 1596 } 1597 } 1598 1599 env->cp15.c9_pmcr &= ~PMCR_WRITABLE_MASK; 1600 env->cp15.c9_pmcr |= (val & PMCR_WRITABLE_MASK); 1601 1602 pmu_op_finish(env); 1603 return 0; 1604 case SYSREG_PMUSERENR_EL0: 1605 env->cp15.c9_pmuserenr = val & 0xf; 1606 return 0; 1607 case SYSREG_PMCNTENSET_EL0: 1608 env->cp15.c9_pmcnten |= (val & pmu_counter_mask(env)); 1609 return 0; 1610 case SYSREG_PMCNTENCLR_EL0: 1611 env->cp15.c9_pmcnten &= ~(val & pmu_counter_mask(env)); 1612 return 0; 1613 case SYSREG_PMINTENCLR_EL1: 1614 pmu_op_start(env); 1615 env->cp15.c9_pminten |= val; 1616 pmu_op_finish(env); 1617 return 0; 1618 case SYSREG_PMOVSCLR_EL0: 1619 pmu_op_start(env); 1620 env->cp15.c9_pmovsr &= ~val; 1621 pmu_op_finish(env); 1622 return 0; 1623 case SYSREG_PMSWINC_EL0: 1624 pmu_op_start(env); 1625 pmswinc_write(env, val); 1626 pmu_op_finish(env); 1627 return 0; 1628 case SYSREG_PMSELR_EL0: 1629 env->cp15.c9_pmselr = val & 0x1f; 1630 return 0; 1631 case SYSREG_PMCCFILTR_EL0: 1632 pmu_op_start(env); 1633 env->cp15.pmccfiltr_el0 = val & PMCCFILTR_EL0; 1634 pmu_op_finish(env); 1635 return 0; 1636 } 1637 } 1638 1639 switch (reg) { 1640 case SYSREG_OSLAR_EL1: 1641 env->cp15.oslsr_el1 = val & 1; 1642 return 0; 1643 case SYSREG_CNTP_CTL_EL0: 1644 /* 1645 * Guests should not rely on the physical counter, but macOS emits 1646 * disable writes to it. Let it do so, but ignore the requests. 1647 */ 1648 qemu_log_mask(LOG_UNIMP, "Unsupported write to CNTP_CTL_EL0\n"); 1649 return 0; 1650 case SYSREG_OSDLR_EL1: 1651 /* Dummy register */ 1652 return 0; 1653 case SYSREG_ICC_AP0R0_EL1: 1654 case SYSREG_ICC_AP0R1_EL1: 1655 case SYSREG_ICC_AP0R2_EL1: 1656 case SYSREG_ICC_AP0R3_EL1: 1657 case SYSREG_ICC_AP1R0_EL1: 1658 case SYSREG_ICC_AP1R1_EL1: 1659 case SYSREG_ICC_AP1R2_EL1: 1660 case SYSREG_ICC_AP1R3_EL1: 1661 case SYSREG_ICC_ASGI1R_EL1: 1662 case SYSREG_ICC_BPR0_EL1: 1663 case SYSREG_ICC_BPR1_EL1: 1664 case SYSREG_ICC_CTLR_EL1: 1665 case SYSREG_ICC_DIR_EL1: 1666 case SYSREG_ICC_EOIR0_EL1: 1667 case SYSREG_ICC_EOIR1_EL1: 1668 case SYSREG_ICC_HPPIR0_EL1: 1669 case SYSREG_ICC_HPPIR1_EL1: 1670 case SYSREG_ICC_IAR0_EL1: 1671 case SYSREG_ICC_IAR1_EL1: 1672 case SYSREG_ICC_IGRPEN0_EL1: 1673 case SYSREG_ICC_IGRPEN1_EL1: 1674 case SYSREG_ICC_PMR_EL1: 1675 case SYSREG_ICC_SGI0R_EL1: 1676 case SYSREG_ICC_SGI1R_EL1: 1677 case SYSREG_ICC_SRE_EL1: 1678 /* Call the TCG sysreg handler. This is only safe for GICv3 regs. */ 1679 if (hvf_sysreg_write_cp(cpu, reg, val)) { 1680 return 0; 1681 } 1682 break; 1683 case SYSREG_MDSCR_EL1: 1684 env->cp15.mdscr_el1 = val; 1685 return 0; 1686 case SYSREG_DBGBVR0_EL1: 1687 case SYSREG_DBGBVR1_EL1: 1688 case SYSREG_DBGBVR2_EL1: 1689 case SYSREG_DBGBVR3_EL1: 1690 case SYSREG_DBGBVR4_EL1: 1691 case SYSREG_DBGBVR5_EL1: 1692 case SYSREG_DBGBVR6_EL1: 1693 case SYSREG_DBGBVR7_EL1: 1694 case SYSREG_DBGBVR8_EL1: 1695 case SYSREG_DBGBVR9_EL1: 1696 case SYSREG_DBGBVR10_EL1: 1697 case SYSREG_DBGBVR11_EL1: 1698 case SYSREG_DBGBVR12_EL1: 1699 case SYSREG_DBGBVR13_EL1: 1700 case SYSREG_DBGBVR14_EL1: 1701 case SYSREG_DBGBVR15_EL1: 1702 env->cp15.dbgbvr[SYSREG_CRM(reg)] = val; 1703 return 0; 1704 case SYSREG_DBGBCR0_EL1: 1705 case SYSREG_DBGBCR1_EL1: 1706 case SYSREG_DBGBCR2_EL1: 1707 case SYSREG_DBGBCR3_EL1: 1708 case SYSREG_DBGBCR4_EL1: 1709 case SYSREG_DBGBCR5_EL1: 1710 case SYSREG_DBGBCR6_EL1: 1711 case SYSREG_DBGBCR7_EL1: 1712 case SYSREG_DBGBCR8_EL1: 1713 case SYSREG_DBGBCR9_EL1: 1714 case SYSREG_DBGBCR10_EL1: 1715 case SYSREG_DBGBCR11_EL1: 1716 case SYSREG_DBGBCR12_EL1: 1717 case SYSREG_DBGBCR13_EL1: 1718 case SYSREG_DBGBCR14_EL1: 1719 case SYSREG_DBGBCR15_EL1: 1720 env->cp15.dbgbcr[SYSREG_CRM(reg)] = val; 1721 return 0; 1722 case SYSREG_DBGWVR0_EL1: 1723 case SYSREG_DBGWVR1_EL1: 1724 case SYSREG_DBGWVR2_EL1: 1725 case SYSREG_DBGWVR3_EL1: 1726 case SYSREG_DBGWVR4_EL1: 1727 case SYSREG_DBGWVR5_EL1: 1728 case SYSREG_DBGWVR6_EL1: 1729 case SYSREG_DBGWVR7_EL1: 1730 case SYSREG_DBGWVR8_EL1: 1731 case SYSREG_DBGWVR9_EL1: 1732 case SYSREG_DBGWVR10_EL1: 1733 case SYSREG_DBGWVR11_EL1: 1734 case SYSREG_DBGWVR12_EL1: 1735 case SYSREG_DBGWVR13_EL1: 1736 case SYSREG_DBGWVR14_EL1: 1737 case SYSREG_DBGWVR15_EL1: 1738 env->cp15.dbgwvr[SYSREG_CRM(reg)] = val; 1739 return 0; 1740 case SYSREG_DBGWCR0_EL1: 1741 case SYSREG_DBGWCR1_EL1: 1742 case SYSREG_DBGWCR2_EL1: 1743 case SYSREG_DBGWCR3_EL1: 1744 case SYSREG_DBGWCR4_EL1: 1745 case SYSREG_DBGWCR5_EL1: 1746 case SYSREG_DBGWCR6_EL1: 1747 case SYSREG_DBGWCR7_EL1: 1748 case SYSREG_DBGWCR8_EL1: 1749 case SYSREG_DBGWCR9_EL1: 1750 case SYSREG_DBGWCR10_EL1: 1751 case SYSREG_DBGWCR11_EL1: 1752 case SYSREG_DBGWCR12_EL1: 1753 case SYSREG_DBGWCR13_EL1: 1754 case SYSREG_DBGWCR14_EL1: 1755 case SYSREG_DBGWCR15_EL1: 1756 env->cp15.dbgwcr[SYSREG_CRM(reg)] = val; 1757 return 0; 1758 } 1759 1760 cpu_synchronize_state(cpu); 1761 trace_hvf_unhandled_sysreg_write(env->pc, reg, 1762 SYSREG_OP0(reg), 1763 SYSREG_OP1(reg), 1764 SYSREG_CRN(reg), 1765 SYSREG_CRM(reg), 1766 SYSREG_OP2(reg)); 1767 hvf_raise_exception(cpu, EXCP_UDEF, syn_uncategorized(), 1); 1768 return 1; 1769 } 1770 1771 static int hvf_inject_interrupts(CPUState *cpu) 1772 { 1773 if (cpu->interrupt_request & CPU_INTERRUPT_FIQ) { 1774 trace_hvf_inject_fiq(); 1775 hv_vcpu_set_pending_interrupt(cpu->accel->fd, HV_INTERRUPT_TYPE_FIQ, 1776 true); 1777 } 1778 1779 if (cpu->interrupt_request & CPU_INTERRUPT_HARD) { 1780 trace_hvf_inject_irq(); 1781 hv_vcpu_set_pending_interrupt(cpu->accel->fd, HV_INTERRUPT_TYPE_IRQ, 1782 true); 1783 } 1784 1785 return 0; 1786 } 1787 1788 static uint64_t hvf_vtimer_val_raw(void) 1789 { 1790 /* 1791 * mach_absolute_time() returns the vtimer value without the VM 1792 * offset that we define. Add our own offset on top. 1793 */ 1794 return mach_absolute_time() - hvf_state->vtimer_offset; 1795 } 1796 1797 static uint64_t hvf_vtimer_val(void) 1798 { 1799 if (!runstate_is_running()) { 1800 /* VM is paused, the vtimer value is in vtimer.vtimer_val */ 1801 return vtimer.vtimer_val; 1802 } 1803 1804 return hvf_vtimer_val_raw(); 1805 } 1806 1807 static void hvf_wait_for_ipi(CPUState *cpu, struct timespec *ts) 1808 { 1809 /* 1810 * Use pselect to sleep so that other threads can IPI us while we're 1811 * sleeping. 1812 */ 1813 qatomic_set_mb(&cpu->thread_kicked, false); 1814 bql_unlock(); 1815 pselect(0, 0, 0, 0, ts, &cpu->accel->unblock_ipi_mask); 1816 bql_lock(); 1817 } 1818 1819 static void hvf_wfi(CPUState *cpu) 1820 { 1821 ARMCPU *arm_cpu = ARM_CPU(cpu); 1822 struct timespec ts; 1823 hv_return_t r; 1824 uint64_t ctl; 1825 uint64_t cval; 1826 int64_t ticks_to_sleep; 1827 uint64_t seconds; 1828 uint64_t nanos; 1829 uint32_t cntfrq; 1830 1831 if (cpu->interrupt_request & (CPU_INTERRUPT_HARD | CPU_INTERRUPT_FIQ)) { 1832 /* Interrupt pending, no need to wait */ 1833 return; 1834 } 1835 1836 r = hv_vcpu_get_sys_reg(cpu->accel->fd, HV_SYS_REG_CNTV_CTL_EL0, &ctl); 1837 assert_hvf_ok(r); 1838 1839 if (!(ctl & 1) || (ctl & 2)) { 1840 /* Timer disabled or masked, just wait for an IPI. */ 1841 hvf_wait_for_ipi(cpu, NULL); 1842 return; 1843 } 1844 1845 r = hv_vcpu_get_sys_reg(cpu->accel->fd, HV_SYS_REG_CNTV_CVAL_EL0, &cval); 1846 assert_hvf_ok(r); 1847 1848 ticks_to_sleep = cval - hvf_vtimer_val(); 1849 if (ticks_to_sleep < 0) { 1850 return; 1851 } 1852 1853 cntfrq = gt_cntfrq_period_ns(arm_cpu); 1854 seconds = muldiv64(ticks_to_sleep, cntfrq, NANOSECONDS_PER_SECOND); 1855 ticks_to_sleep -= muldiv64(seconds, NANOSECONDS_PER_SECOND, cntfrq); 1856 nanos = ticks_to_sleep * cntfrq; 1857 1858 /* 1859 * Don't sleep for less than the time a context switch would take, 1860 * so that we can satisfy fast timer requests on the same CPU. 1861 * Measurements on M1 show the sweet spot to be ~2ms. 1862 */ 1863 if (!seconds && nanos < (2 * SCALE_MS)) { 1864 return; 1865 } 1866 1867 ts = (struct timespec) { seconds, nanos }; 1868 hvf_wait_for_ipi(cpu, &ts); 1869 } 1870 1871 static void hvf_sync_vtimer(CPUState *cpu) 1872 { 1873 ARMCPU *arm_cpu = ARM_CPU(cpu); 1874 hv_return_t r; 1875 uint64_t ctl; 1876 bool irq_state; 1877 1878 if (!cpu->accel->vtimer_masked) { 1879 /* We will get notified on vtimer changes by hvf, nothing to do */ 1880 return; 1881 } 1882 1883 r = hv_vcpu_get_sys_reg(cpu->accel->fd, HV_SYS_REG_CNTV_CTL_EL0, &ctl); 1884 assert_hvf_ok(r); 1885 1886 irq_state = (ctl & (TMR_CTL_ENABLE | TMR_CTL_IMASK | TMR_CTL_ISTATUS)) == 1887 (TMR_CTL_ENABLE | TMR_CTL_ISTATUS); 1888 qemu_set_irq(arm_cpu->gt_timer_outputs[GTIMER_VIRT], irq_state); 1889 1890 if (!irq_state) { 1891 /* Timer no longer asserting, we can unmask it */ 1892 hv_vcpu_set_vtimer_mask(cpu->accel->fd, false); 1893 cpu->accel->vtimer_masked = false; 1894 } 1895 } 1896 1897 int hvf_vcpu_exec(CPUState *cpu) 1898 { 1899 ARMCPU *arm_cpu = ARM_CPU(cpu); 1900 CPUARMState *env = &arm_cpu->env; 1901 int ret; 1902 hv_vcpu_exit_t *hvf_exit = cpu->accel->exit; 1903 hv_return_t r; 1904 bool advance_pc = false; 1905 1906 if (!(cpu->singlestep_enabled & SSTEP_NOIRQ) && 1907 hvf_inject_interrupts(cpu)) { 1908 return EXCP_INTERRUPT; 1909 } 1910 1911 if (cpu->halted) { 1912 return EXCP_HLT; 1913 } 1914 1915 flush_cpu_state(cpu); 1916 1917 bql_unlock(); 1918 r = hv_vcpu_run(cpu->accel->fd); 1919 bql_lock(); 1920 switch (r) { 1921 case HV_SUCCESS: 1922 break; 1923 case HV_ILLEGAL_GUEST_STATE: 1924 trace_hvf_illegal_guest_state(); 1925 /* fall through */ 1926 default: 1927 g_assert_not_reached(); 1928 } 1929 1930 /* handle VMEXIT */ 1931 uint64_t exit_reason = hvf_exit->reason; 1932 uint64_t syndrome = hvf_exit->exception.syndrome; 1933 uint32_t ec = syn_get_ec(syndrome); 1934 1935 ret = 0; 1936 switch (exit_reason) { 1937 case HV_EXIT_REASON_EXCEPTION: 1938 /* This is the main one, handle below. */ 1939 break; 1940 case HV_EXIT_REASON_VTIMER_ACTIVATED: 1941 qemu_set_irq(arm_cpu->gt_timer_outputs[GTIMER_VIRT], 1); 1942 cpu->accel->vtimer_masked = true; 1943 return 0; 1944 case HV_EXIT_REASON_CANCELED: 1945 /* we got kicked, no exit to process */ 1946 return 0; 1947 default: 1948 g_assert_not_reached(); 1949 } 1950 1951 hvf_sync_vtimer(cpu); 1952 1953 switch (ec) { 1954 case EC_SOFTWARESTEP: { 1955 ret = EXCP_DEBUG; 1956 1957 if (!cpu->singlestep_enabled) { 1958 error_report("EC_SOFTWARESTEP but single-stepping not enabled"); 1959 } 1960 break; 1961 } 1962 case EC_AA64_BKPT: { 1963 ret = EXCP_DEBUG; 1964 1965 cpu_synchronize_state(cpu); 1966 1967 if (!hvf_find_sw_breakpoint(cpu, env->pc)) { 1968 /* Re-inject into the guest */ 1969 ret = 0; 1970 hvf_raise_exception(cpu, EXCP_BKPT, syn_aa64_bkpt(0), 1); 1971 } 1972 break; 1973 } 1974 case EC_BREAKPOINT: { 1975 ret = EXCP_DEBUG; 1976 1977 cpu_synchronize_state(cpu); 1978 1979 if (!find_hw_breakpoint(cpu, env->pc)) { 1980 error_report("EC_BREAKPOINT but unknown hw breakpoint"); 1981 } 1982 break; 1983 } 1984 case EC_WATCHPOINT: { 1985 ret = EXCP_DEBUG; 1986 1987 cpu_synchronize_state(cpu); 1988 1989 CPUWatchpoint *wp = 1990 find_hw_watchpoint(cpu, hvf_exit->exception.virtual_address); 1991 if (!wp) { 1992 error_report("EXCP_DEBUG but unknown hw watchpoint"); 1993 } 1994 cpu->watchpoint_hit = wp; 1995 break; 1996 } 1997 case EC_DATAABORT: { 1998 bool isv = syndrome & ARM_EL_ISV; 1999 bool iswrite = (syndrome >> 6) & 1; 2000 bool s1ptw = (syndrome >> 7) & 1; 2001 bool sse = (syndrome >> 21) & 1; 2002 uint32_t sas = (syndrome >> 22) & 3; 2003 uint32_t len = 1 << sas; 2004 uint32_t srt = (syndrome >> 16) & 0x1f; 2005 uint32_t cm = (syndrome >> 8) & 0x1; 2006 uint64_t val = 0; 2007 2008 trace_hvf_data_abort(env->pc, hvf_exit->exception.virtual_address, 2009 hvf_exit->exception.physical_address, isv, 2010 iswrite, s1ptw, len, srt); 2011 2012 if (cm) { 2013 /* We don't cache MMIO regions */ 2014 advance_pc = true; 2015 break; 2016 } 2017 2018 assert(isv); 2019 2020 if (iswrite) { 2021 val = hvf_get_reg(cpu, srt); 2022 address_space_write(&address_space_memory, 2023 hvf_exit->exception.physical_address, 2024 MEMTXATTRS_UNSPECIFIED, &val, len); 2025 } else { 2026 address_space_read(&address_space_memory, 2027 hvf_exit->exception.physical_address, 2028 MEMTXATTRS_UNSPECIFIED, &val, len); 2029 if (sse) { 2030 val = sextract64(val, 0, len * 8); 2031 } 2032 hvf_set_reg(cpu, srt, val); 2033 } 2034 2035 advance_pc = true; 2036 break; 2037 } 2038 case EC_SYSTEMREGISTERTRAP: { 2039 bool isread = (syndrome >> 0) & 1; 2040 uint32_t rt = (syndrome >> 5) & 0x1f; 2041 uint32_t reg = syndrome & SYSREG_MASK; 2042 uint64_t val; 2043 int sysreg_ret = 0; 2044 2045 if (isread) { 2046 sysreg_ret = hvf_sysreg_read(cpu, reg, &val); 2047 if (!sysreg_ret) { 2048 trace_hvf_sysreg_read(reg, 2049 SYSREG_OP0(reg), 2050 SYSREG_OP1(reg), 2051 SYSREG_CRN(reg), 2052 SYSREG_CRM(reg), 2053 SYSREG_OP2(reg), 2054 val); 2055 hvf_set_reg(cpu, rt, val); 2056 } 2057 } else { 2058 val = hvf_get_reg(cpu, rt); 2059 sysreg_ret = hvf_sysreg_write(cpu, reg, val); 2060 } 2061 2062 advance_pc = !sysreg_ret; 2063 break; 2064 } 2065 case EC_WFX_TRAP: 2066 advance_pc = true; 2067 if (!(syndrome & WFX_IS_WFE)) { 2068 hvf_wfi(cpu); 2069 } 2070 break; 2071 case EC_AA64_HVC: 2072 cpu_synchronize_state(cpu); 2073 if (arm_cpu->psci_conduit == QEMU_PSCI_CONDUIT_HVC) { 2074 if (!hvf_handle_psci_call(cpu)) { 2075 trace_hvf_unknown_hvc(env->pc, env->xregs[0]); 2076 /* SMCCC 1.3 section 5.2 says every unknown SMCCC call returns -1 */ 2077 env->xregs[0] = -1; 2078 } 2079 } else { 2080 trace_hvf_unknown_hvc(env->pc, env->xregs[0]); 2081 hvf_raise_exception(cpu, EXCP_UDEF, syn_uncategorized(), 1); 2082 } 2083 break; 2084 case EC_AA64_SMC: 2085 cpu_synchronize_state(cpu); 2086 if (arm_cpu->psci_conduit == QEMU_PSCI_CONDUIT_SMC) { 2087 advance_pc = true; 2088 2089 if (!hvf_handle_psci_call(cpu)) { 2090 trace_hvf_unknown_smc(env->xregs[0]); 2091 /* SMCCC 1.3 section 5.2 says every unknown SMCCC call returns -1 */ 2092 env->xregs[0] = -1; 2093 } 2094 } else { 2095 trace_hvf_unknown_smc(env->xregs[0]); 2096 hvf_raise_exception(cpu, EXCP_UDEF, syn_uncategorized(), 1); 2097 } 2098 break; 2099 default: 2100 cpu_synchronize_state(cpu); 2101 trace_hvf_exit(syndrome, ec, env->pc); 2102 error_report("0x%llx: unhandled exception ec=0x%x", env->pc, ec); 2103 } 2104 2105 if (advance_pc) { 2106 uint64_t pc; 2107 2108 flush_cpu_state(cpu); 2109 2110 r = hv_vcpu_get_reg(cpu->accel->fd, HV_REG_PC, &pc); 2111 assert_hvf_ok(r); 2112 pc += 4; 2113 r = hv_vcpu_set_reg(cpu->accel->fd, HV_REG_PC, pc); 2114 assert_hvf_ok(r); 2115 2116 /* Handle single-stepping over instructions which trigger a VM exit */ 2117 if (cpu->singlestep_enabled) { 2118 ret = EXCP_DEBUG; 2119 } 2120 } 2121 2122 return ret; 2123 } 2124 2125 static const VMStateDescription vmstate_hvf_vtimer = { 2126 .name = "hvf-vtimer", 2127 .version_id = 1, 2128 .minimum_version_id = 1, 2129 .fields = (const VMStateField[]) { 2130 VMSTATE_UINT64(vtimer_val, HVFVTimer), 2131 VMSTATE_END_OF_LIST() 2132 }, 2133 }; 2134 2135 static void hvf_vm_state_change(void *opaque, bool running, RunState state) 2136 { 2137 HVFVTimer *s = opaque; 2138 2139 if (running) { 2140 /* Update vtimer offset on all CPUs */ 2141 hvf_state->vtimer_offset = mach_absolute_time() - s->vtimer_val; 2142 cpu_synchronize_all_states(); 2143 } else { 2144 /* Remember vtimer value on every pause */ 2145 s->vtimer_val = hvf_vtimer_val_raw(); 2146 } 2147 } 2148 2149 int hvf_arch_init(void) 2150 { 2151 hvf_state->vtimer_offset = mach_absolute_time(); 2152 vmstate_register(NULL, 0, &vmstate_hvf_vtimer, &vtimer); 2153 qemu_add_vm_change_state_handler(hvf_vm_state_change, &vtimer); 2154 2155 hvf_arm_init_debug(); 2156 2157 return 0; 2158 } 2159 2160 static const uint32_t brk_insn = 0xd4200000; 2161 2162 int hvf_arch_insert_sw_breakpoint(CPUState *cpu, struct hvf_sw_breakpoint *bp) 2163 { 2164 if (cpu_memory_rw_debug(cpu, bp->pc, (uint8_t *)&bp->saved_insn, 4, 0) || 2165 cpu_memory_rw_debug(cpu, bp->pc, (uint8_t *)&brk_insn, 4, 1)) { 2166 return -EINVAL; 2167 } 2168 return 0; 2169 } 2170 2171 int hvf_arch_remove_sw_breakpoint(CPUState *cpu, struct hvf_sw_breakpoint *bp) 2172 { 2173 static uint32_t brk; 2174 2175 if (cpu_memory_rw_debug(cpu, bp->pc, (uint8_t *)&brk, 4, 0) || 2176 brk != brk_insn || 2177 cpu_memory_rw_debug(cpu, bp->pc, (uint8_t *)&bp->saved_insn, 4, 1)) { 2178 return -EINVAL; 2179 } 2180 return 0; 2181 } 2182 2183 int hvf_arch_insert_hw_breakpoint(vaddr addr, vaddr len, int type) 2184 { 2185 switch (type) { 2186 case GDB_BREAKPOINT_HW: 2187 return insert_hw_breakpoint(addr); 2188 case GDB_WATCHPOINT_READ: 2189 case GDB_WATCHPOINT_WRITE: 2190 case GDB_WATCHPOINT_ACCESS: 2191 return insert_hw_watchpoint(addr, len, type); 2192 default: 2193 return -ENOSYS; 2194 } 2195 } 2196 2197 int hvf_arch_remove_hw_breakpoint(vaddr addr, vaddr len, int type) 2198 { 2199 switch (type) { 2200 case GDB_BREAKPOINT_HW: 2201 return delete_hw_breakpoint(addr); 2202 case GDB_WATCHPOINT_READ: 2203 case GDB_WATCHPOINT_WRITE: 2204 case GDB_WATCHPOINT_ACCESS: 2205 return delete_hw_watchpoint(addr, len, type); 2206 default: 2207 return -ENOSYS; 2208 } 2209 } 2210 2211 void hvf_arch_remove_all_hw_breakpoints(void) 2212 { 2213 if (cur_hw_wps > 0) { 2214 g_array_remove_range(hw_watchpoints, 0, cur_hw_wps); 2215 } 2216 if (cur_hw_bps > 0) { 2217 g_array_remove_range(hw_breakpoints, 0, cur_hw_bps); 2218 } 2219 } 2220 2221 /* 2222 * Update the vCPU with the gdbstub's view of debug registers. This view 2223 * consists of all hardware breakpoints and watchpoints inserted so far while 2224 * debugging the guest. 2225 */ 2226 static void hvf_put_gdbstub_debug_registers(CPUState *cpu) 2227 { 2228 hv_return_t r = HV_SUCCESS; 2229 int i; 2230 2231 for (i = 0; i < cur_hw_bps; i++) { 2232 HWBreakpoint *bp = get_hw_bp(i); 2233 r = hv_vcpu_set_sys_reg(cpu->accel->fd, dbgbcr_regs[i], bp->bcr); 2234 assert_hvf_ok(r); 2235 r = hv_vcpu_set_sys_reg(cpu->accel->fd, dbgbvr_regs[i], bp->bvr); 2236 assert_hvf_ok(r); 2237 } 2238 for (i = cur_hw_bps; i < max_hw_bps; i++) { 2239 r = hv_vcpu_set_sys_reg(cpu->accel->fd, dbgbcr_regs[i], 0); 2240 assert_hvf_ok(r); 2241 r = hv_vcpu_set_sys_reg(cpu->accel->fd, dbgbvr_regs[i], 0); 2242 assert_hvf_ok(r); 2243 } 2244 2245 for (i = 0; i < cur_hw_wps; i++) { 2246 HWWatchpoint *wp = get_hw_wp(i); 2247 r = hv_vcpu_set_sys_reg(cpu->accel->fd, dbgwcr_regs[i], wp->wcr); 2248 assert_hvf_ok(r); 2249 r = hv_vcpu_set_sys_reg(cpu->accel->fd, dbgwvr_regs[i], wp->wvr); 2250 assert_hvf_ok(r); 2251 } 2252 for (i = cur_hw_wps; i < max_hw_wps; i++) { 2253 r = hv_vcpu_set_sys_reg(cpu->accel->fd, dbgwcr_regs[i], 0); 2254 assert_hvf_ok(r); 2255 r = hv_vcpu_set_sys_reg(cpu->accel->fd, dbgwvr_regs[i], 0); 2256 assert_hvf_ok(r); 2257 } 2258 } 2259 2260 /* 2261 * Update the vCPU with the guest's view of debug registers. This view is kept 2262 * in the environment at all times. 2263 */ 2264 static void hvf_put_guest_debug_registers(CPUState *cpu) 2265 { 2266 ARMCPU *arm_cpu = ARM_CPU(cpu); 2267 CPUARMState *env = &arm_cpu->env; 2268 hv_return_t r = HV_SUCCESS; 2269 int i; 2270 2271 for (i = 0; i < max_hw_bps; i++) { 2272 r = hv_vcpu_set_sys_reg(cpu->accel->fd, dbgbcr_regs[i], 2273 env->cp15.dbgbcr[i]); 2274 assert_hvf_ok(r); 2275 r = hv_vcpu_set_sys_reg(cpu->accel->fd, dbgbvr_regs[i], 2276 env->cp15.dbgbvr[i]); 2277 assert_hvf_ok(r); 2278 } 2279 2280 for (i = 0; i < max_hw_wps; i++) { 2281 r = hv_vcpu_set_sys_reg(cpu->accel->fd, dbgwcr_regs[i], 2282 env->cp15.dbgwcr[i]); 2283 assert_hvf_ok(r); 2284 r = hv_vcpu_set_sys_reg(cpu->accel->fd, dbgwvr_regs[i], 2285 env->cp15.dbgwvr[i]); 2286 assert_hvf_ok(r); 2287 } 2288 } 2289 2290 static inline bool hvf_arm_hw_debug_active(CPUState *cpu) 2291 { 2292 return ((cur_hw_wps > 0) || (cur_hw_bps > 0)); 2293 } 2294 2295 static void hvf_arch_set_traps(CPUState *cpu) 2296 { 2297 bool should_enable_traps = false; 2298 hv_return_t r = HV_SUCCESS; 2299 2300 /* Check whether guest debugging is enabled for at least one vCPU; if it 2301 * is, enable exiting the guest on all vCPUs */ 2302 should_enable_traps |= cpu->accel->guest_debug_enabled; 2303 /* Set whether debug exceptions exit the guest */ 2304 r = hv_vcpu_set_trap_debug_exceptions(cpu->accel->fd, 2305 should_enable_traps); 2306 assert_hvf_ok(r); 2307 2308 /* Set whether accesses to debug registers exit the guest */ 2309 r = hv_vcpu_set_trap_debug_reg_accesses(cpu->accel->fd, 2310 should_enable_traps); 2311 assert_hvf_ok(r); 2312 } 2313 2314 void hvf_arch_update_guest_debug(CPUState *cpu) 2315 { 2316 ARMCPU *arm_cpu = ARM_CPU(cpu); 2317 CPUARMState *env = &arm_cpu->env; 2318 2319 /* Check whether guest debugging is enabled */ 2320 cpu->accel->guest_debug_enabled = cpu->singlestep_enabled || 2321 hvf_sw_breakpoints_active(cpu) || 2322 hvf_arm_hw_debug_active(cpu); 2323 2324 /* Update debug registers */ 2325 if (cpu->accel->guest_debug_enabled) { 2326 hvf_put_gdbstub_debug_registers(cpu); 2327 } else { 2328 hvf_put_guest_debug_registers(cpu); 2329 } 2330 2331 cpu_synchronize_state(cpu); 2332 2333 /* Enable/disable single-stepping */ 2334 if (cpu->singlestep_enabled) { 2335 env->cp15.mdscr_el1 = 2336 deposit64(env->cp15.mdscr_el1, MDSCR_EL1_SS_SHIFT, 1, 1); 2337 pstate_write(env, pstate_read(env) | PSTATE_SS); 2338 } else { 2339 env->cp15.mdscr_el1 = 2340 deposit64(env->cp15.mdscr_el1, MDSCR_EL1_SS_SHIFT, 1, 0); 2341 } 2342 2343 /* Enable/disable Breakpoint exceptions */ 2344 if (hvf_arm_hw_debug_active(cpu)) { 2345 env->cp15.mdscr_el1 = 2346 deposit64(env->cp15.mdscr_el1, MDSCR_EL1_MDE_SHIFT, 1, 1); 2347 } else { 2348 env->cp15.mdscr_el1 = 2349 deposit64(env->cp15.mdscr_el1, MDSCR_EL1_MDE_SHIFT, 1, 0); 2350 } 2351 2352 hvf_arch_set_traps(cpu); 2353 } 2354 2355 bool hvf_arch_supports_guest_debug(void) 2356 { 2357 return true; 2358 } 2359