diff options
| -rw-r--r-- | target/arm/cpu.h | 12 | ||||
| -rw-r--r-- | target/arm/helper.c | 22 | ||||
| -rw-r--r-- | target/arm/internals.h | 6 | ||||
| -rw-r--r-- | target/arm/translate-a64.c | 12 |
4 files changed, 52 insertions, 0 deletions
diff --git a/target/arm/cpu.h b/target/arm/cpu.h index 39633f73f3..f240275407 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -1243,6 +1243,7 @@ void pmu_init(ARMCPU *cpu); #define CPSR_IT_2_7 (0xfc00U) #define CPSR_GE (0xfU << 16) #define CPSR_IL (1U << 20) +#define CPSR_DIT (1U << 21) #define CPSR_PAN (1U << 22) #define CPSR_J (1U << 24) #define CPSR_IT_0_1 (3U << 25) @@ -1310,6 +1311,7 @@ void pmu_init(ARMCPU *cpu); #define PSTATE_SS (1U << 21) #define PSTATE_PAN (1U << 22) #define PSTATE_UAO (1U << 23) +#define PSTATE_DIT (1U << 24) #define PSTATE_TCO (1U << 25) #define PSTATE_V (1U << 28) #define PSTATE_C (1U << 29) @@ -3876,6 +3878,11 @@ static inline bool isar_feature_aa32_tts2uxn(const ARMISARegisters *id) return FIELD_EX32(id->id_mmfr4, ID_MMFR4, XNX) != 0; } +static inline bool isar_feature_aa32_dit(const ARMISARegisters *id) +{ + return FIELD_EX32(id->id_pfr0, ID_PFR0, DIT) != 0; +} + /* * 64-bit feature tests via id registers. */ @@ -4125,6 +4132,11 @@ static inline bool isar_feature_aa64_tts2uxn(const ARMISARegisters *id) return FIELD_EX64(id->id_aa64mmfr1, ID_AA64MMFR1, XNX) != 0; } +static inline bool isar_feature_aa64_dit(const ARMISARegisters *id) +{ + return FIELD_EX64(id->id_aa64pfr0, ID_AA64PFR0, DIT) != 0; +} + /* * Feature tests for "does this exist in either 32-bit or 64-bit?" */ diff --git a/target/arm/helper.c b/target/arm/helper.c index 51330a0c48..cf8e80419d 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -4431,6 +4431,24 @@ static const ARMCPRegInfo uao_reginfo = { .readfn = aa64_uao_read, .writefn = aa64_uao_write }; +static uint64_t aa64_dit_read(CPUARMState *env, const ARMCPRegInfo *ri) +{ + return env->pstate & PSTATE_DIT; +} + +static void aa64_dit_write(CPUARMState *env, const ARMCPRegInfo *ri, + uint64_t value) +{ + env->pstate = (env->pstate & ~PSTATE_DIT) | (value & PSTATE_DIT); +} + +static const ARMCPRegInfo dit_reginfo = { + .name = "DIT", .state = ARM_CP_STATE_AA64, + .opc0 = 3, .opc1 = 3, .crn = 4, .crm = 2, .opc2 = 5, + .type = ARM_CP_NO_RAW, .access = PL0_RW, + .readfn = aa64_dit_read, .writefn = aa64_dit_write +}; + static CPAccessResult aa64_cacheop_poc_access(CPUARMState *env, const ARMCPRegInfo *ri, bool isread) @@ -8224,6 +8242,10 @@ void register_cp_regs_for_features(ARMCPU *cpu) define_one_arm_cp_reg(cpu, &uao_reginfo); } + if (cpu_isar_feature(aa64_dit, cpu)) { + define_one_arm_cp_reg(cpu, &dit_reginfo); + } + if (arm_feature(env, ARM_FEATURE_EL2) && cpu_isar_feature(aa64_vh, cpu)) { define_arm_cp_regs(cpu, vhe_reginfo); } diff --git a/target/arm/internals.h b/target/arm/internals.h index 448982dd2f..b251fe4450 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -1228,6 +1228,9 @@ static inline uint32_t aarch32_cpsr_valid_mask(uint64_t features, if (isar_feature_aa32_pan(id)) { valid |= CPSR_PAN; } + if (isar_feature_aa32_dit(id)) { + valid |= CPSR_DIT; + } return valid; } @@ -1246,6 +1249,9 @@ static inline uint32_t aarch64_pstate_valid_mask(const ARMISARegisters *id) if (isar_feature_aa64_uao(id)) { valid |= PSTATE_UAO; } + if (isar_feature_aa64_dit(id)) { + valid |= PSTATE_DIT; + } if (isar_feature_aa64_mte(id)) { valid |= PSTATE_TCO; } diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index ffc060e5d7..1c4b8d02f3 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -1700,6 +1700,18 @@ static void handle_msr_i(DisasContext *s, uint32_t insn, tcg_temp_free_i32(t1); break; + case 0x1a: /* DIT */ + if (!dc_isar_feature(aa64_dit, s)) { + goto do_unallocated; + } + if (crm & 1) { + set_pstate_bits(PSTATE_DIT); + } else { + clear_pstate_bits(PSTATE_DIT); + } + /* There's no need to rebuild hflags because DIT is a nop */ + break; + case 0x1e: /* DAIFSet */ t1 = tcg_const_i32(crm); gen_helper_msr_i_daifset(cpu_env, t1); |