diff options
| -rw-r--r-- | target/arm/cpu.h | 2 | ||||
| -rw-r--r-- | target/arm/helper.c | 21 | ||||
| -rw-r--r-- | target/arm/internals.h | 6 | ||||
| -rw-r--r-- | target/arm/translate-a64.c | 14 |
4 files changed, 43 insertions, 0 deletions
diff --git a/target/arm/cpu.h b/target/arm/cpu.h index c6dff1d55b..65a0ef8cd6 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -1186,6 +1186,7 @@ void pmu_init(ARMCPU *cpu); #define CPSR_IT_2_7 (0xfc00U) #define CPSR_GE (0xfU << 16) #define CPSR_IL (1U << 20) +#define CPSR_PAN (1U << 22) #define CPSR_J (1U << 24) #define CPSR_IT_0_1 (3U << 25) #define CPSR_Q (1U << 27) @@ -1250,6 +1251,7 @@ void pmu_init(ARMCPU *cpu); #define PSTATE_BTYPE (3U << 10) #define PSTATE_IL (1U << 20) #define PSTATE_SS (1U << 21) +#define PSTATE_PAN (1U << 22) #define PSTATE_V (1U << 28) #define PSTATE_C (1U << 29) #define PSTATE_Z (1U << 30) diff --git a/target/arm/helper.c b/target/arm/helper.c index e4f17c7e83..058fb23959 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -4163,6 +4163,24 @@ static void aa64_daif_write(CPUARMState *env, const ARMCPRegInfo *ri, env->daif = value & PSTATE_DAIF; } +static uint64_t aa64_pan_read(CPUARMState *env, const ARMCPRegInfo *ri) +{ + return env->pstate & PSTATE_PAN; +} + +static void aa64_pan_write(CPUARMState *env, const ARMCPRegInfo *ri, + uint64_t value) +{ + env->pstate = (env->pstate & ~PSTATE_PAN) | (value & PSTATE_PAN); +} + +static const ARMCPRegInfo pan_reginfo = { + .name = "PAN", .state = ARM_CP_STATE_AA64, + .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 2, .opc2 = 3, + .type = ARM_CP_NO_RAW, .access = PL1_RW, + .readfn = aa64_pan_read, .writefn = aa64_pan_write +}; + static CPAccessResult aa64_cacheop_access(CPUARMState *env, const ARMCPRegInfo *ri, bool isread) @@ -7599,6 +7617,9 @@ void register_cp_regs_for_features(ARMCPU *cpu) if (cpu_isar_feature(aa64_lor, cpu)) { define_arm_cp_regs(cpu, lor_reginfo); } + if (cpu_isar_feature(aa64_pan, cpu)) { + define_one_arm_cp_reg(cpu, &pan_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 034d98ad53..f6709a2b08 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -1081,6 +1081,9 @@ static inline uint32_t aarch32_cpsr_valid_mask(uint64_t features, if (isar_feature_jazelle(id)) { valid |= CPSR_J; } + if (isar_feature_aa32_pan(id)) { + valid |= CPSR_PAN; + } return valid; } @@ -1093,6 +1096,9 @@ static inline uint32_t aarch64_pstate_valid_mask(const ARMISARegisters *id) if (isar_feature_aa64_bti(id)) { valid |= PSTATE_BTYPE; } + if (isar_feature_aa64_pan(id)) { + valid |= PSTATE_PAN; + } return valid; } diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index 49631c2340..d8ba240a15 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -1602,6 +1602,20 @@ static void handle_msr_i(DisasContext *s, uint32_t insn, s->base.is_jmp = DISAS_NEXT; break; + case 0x04: /* PAN */ + if (!dc_isar_feature(aa64_pan, s) || s->current_el == 0) { + goto do_unallocated; + } + if (crm & 1) { + set_pstate_bits(PSTATE_PAN); + } else { + clear_pstate_bits(PSTATE_PAN); + } + t1 = tcg_const_i32(s->current_el); + gen_helper_rebuild_hflags_a64(cpu_env, t1); + tcg_temp_free_i32(t1); + break; + case 0x05: /* SPSel */ if (s->current_el == 0) { goto do_unallocated; |