diff options
Diffstat (limited to 'target/arm/helper.c')
| -rw-r--r-- | target/arm/helper.c | 79 |
1 files changed, 71 insertions, 8 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c index 76b608f0ba..8646a7a119 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -885,7 +885,7 @@ static CPAccessResult pmreg_access(CPUARMState *env, const ARMCPRegInfo *ri, */ int el = arm_current_el(env); - if (el == 0 && !env->cp15.c9_pmuserenr) { + if (el == 0 && !(env->cp15.c9_pmuserenr & 1)) { return CP_ACCESS_TRAP; } if (el < 2 && (env->cp15.mdcr_el2 & MDCR_TPM) @@ -899,8 +899,67 @@ static CPAccessResult pmreg_access(CPUARMState *env, const ARMCPRegInfo *ri, return CP_ACCESS_OK; } +static CPAccessResult pmreg_access_xevcntr(CPUARMState *env, + const ARMCPRegInfo *ri, + bool isread) +{ + /* ER: event counter read trap control */ + if (arm_feature(env, ARM_FEATURE_V8) + && arm_current_el(env) == 0 + && (env->cp15.c9_pmuserenr & (1 << 3)) != 0 + && isread) { + return CP_ACCESS_OK; + } + + return pmreg_access(env, ri, isread); +} + +static CPAccessResult pmreg_access_swinc(CPUARMState *env, + const ARMCPRegInfo *ri, + bool isread) +{ + /* SW: software increment write trap control */ + if (arm_feature(env, ARM_FEATURE_V8) + && arm_current_el(env) == 0 + && (env->cp15.c9_pmuserenr & (1 << 1)) != 0 + && !isread) { + return CP_ACCESS_OK; + } + + return pmreg_access(env, ri, isread); +} + #ifndef CONFIG_USER_ONLY +static CPAccessResult pmreg_access_selr(CPUARMState *env, + const ARMCPRegInfo *ri, + bool isread) +{ + /* ER: event counter read trap control */ + if (arm_feature(env, ARM_FEATURE_V8) + && arm_current_el(env) == 0 + && (env->cp15.c9_pmuserenr & (1 << 3)) != 0) { + return CP_ACCESS_OK; + } + + return pmreg_access(env, ri, isread); +} + +static CPAccessResult pmreg_access_ccntr(CPUARMState *env, + const ARMCPRegInfo *ri, + bool isread) +{ + /* CR: cycle counter read trap control */ + if (arm_feature(env, ARM_FEATURE_V8) + && arm_current_el(env) == 0 + && (env->cp15.c9_pmuserenr & (1 << 2)) != 0 + && isread) { + return CP_ACCESS_OK; + } + + return pmreg_access(env, ri, isread); +} + static inline bool arm_ccnt_enabled(CPUARMState *env) { /* This does not support checking PMCCFILTR_EL0 register */ @@ -1068,7 +1127,11 @@ static uint64_t pmxevtyper_read(CPUARMState *env, const ARMCPRegInfo *ri) static void pmuserenr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) { - env->cp15.c9_pmuserenr = value & 1; + if (arm_feature(env, ARM_FEATURE_V8)) { + env->cp15.c9_pmuserenr = value & 0xf; + } else { + env->cp15.c9_pmuserenr = value & 1; + } } static void pmintenset_write(CPUARMState *env, const ARMCPRegInfo *ri, @@ -1212,25 +1275,25 @@ static const ARMCPRegInfo v7_cp_reginfo[] = { .raw_writefn = raw_write }, /* Unimplemented so WI. */ { .name = "PMSWINC", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 4, - .access = PL0_W, .accessfn = pmreg_access, .type = ARM_CP_NOP }, + .access = PL0_W, .accessfn = pmreg_access_swinc, .type = ARM_CP_NOP }, #ifndef CONFIG_USER_ONLY { .name = "PMSELR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 5, .access = PL0_RW, .type = ARM_CP_ALIAS, .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmselr), - .accessfn = pmreg_access, .writefn = pmselr_write, + .accessfn = pmreg_access_selr, .writefn = pmselr_write, .raw_writefn = raw_write}, { .name = "PMSELR_EL0", .state = ARM_CP_STATE_AA64, .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 5, - .access = PL0_RW, .accessfn = pmreg_access, + .access = PL0_RW, .accessfn = pmreg_access_selr, .fieldoffset = offsetof(CPUARMState, cp15.c9_pmselr), .writefn = pmselr_write, .raw_writefn = raw_write, }, { .name = "PMCCNTR", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 0, .access = PL0_RW, .resetvalue = 0, .type = ARM_CP_IO, .readfn = pmccntr_read, .writefn = pmccntr_write32, - .accessfn = pmreg_access }, + .accessfn = pmreg_access_ccntr }, { .name = "PMCCNTR_EL0", .state = ARM_CP_STATE_AA64, .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 13, .opc2 = 0, - .access = PL0_RW, .accessfn = pmreg_access, + .access = PL0_RW, .accessfn = pmreg_access_ccntr, .type = ARM_CP_IO, .readfn = pmccntr_read, .writefn = pmccntr_write, }, #endif @@ -1251,7 +1314,7 @@ static const ARMCPRegInfo v7_cp_reginfo[] = { /* Unimplemented, RAZ/WI. */ { .name = "PMXEVCNTR", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 2, .access = PL0_RW, .type = ARM_CP_CONST, .resetvalue = 0, - .accessfn = pmreg_access }, + .accessfn = pmreg_access_xevcntr }, { .name = "PMUSERENR", .cp = 15, .crn = 9, .crm = 14, .opc1 = 0, .opc2 = 0, .access = PL0_R | PL1_RW, .accessfn = access_tpm, .fieldoffset = offsetof(CPUARMState, cp15.c9_pmuserenr), |