diff options
Diffstat (limited to 'target/arm')
| -rw-r--r-- | target/arm/cpu.h | 17 | ||||
| -rw-r--r-- | target/arm/cpu64.c | 1 | ||||
| -rw-r--r-- | target/arm/helper.c | 64 | ||||
| -rw-r--r-- | target/arm/pauth_helper.c | 18 |
4 files changed, 76 insertions, 24 deletions
diff --git a/target/arm/cpu.h b/target/arm/cpu.h index 733b840a71..c34207611b 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -636,11 +636,13 @@ typedef struct CPUARMState { } iwmmxt; #ifdef TARGET_AARCH64 - ARMPACKey apia_key; - ARMPACKey apib_key; - ARMPACKey apda_key; - ARMPACKey apdb_key; - ARMPACKey apga_key; + struct { + ARMPACKey apia; + ARMPACKey apib; + ARMPACKey apda; + ARMPACKey apdb; + ARMPACKey apga; + } keys; #endif #if defined(CONFIG_USER_ONLY) @@ -3519,6 +3521,11 @@ static inline bool isar_feature_aa64_condm_5(const ARMISARegisters *id) return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, TS) >= 2; } +static inline bool isar_feature_aa64_rndr(const ARMISARegisters *id) +{ + return FIELD_EX64(id->id_aa64isar0, ID_AA64ISAR0, RNDR) != 0; +} + static inline bool isar_feature_aa64_jscvt(const ARMISARegisters *id) { return FIELD_EX64(id->id_aa64isar1, ID_AA64ISAR1, JSCVT) != 0; diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c index 228906f267..835f73cceb 100644 --- a/target/arm/cpu64.c +++ b/target/arm/cpu64.c @@ -310,6 +310,7 @@ static void aarch64_max_initfn(Object *obj) t = FIELD_DP64(t, ID_AA64ISAR0, DP, 1); t = FIELD_DP64(t, ID_AA64ISAR0, FHM, 1); t = FIELD_DP64(t, ID_AA64ISAR0, TS, 2); /* v8.5-CondM */ + t = FIELD_DP64(t, ID_AA64ISAR0, RNDR, 1); cpu->isar.id_aa64isar0 = t; t = cpu->isar.id_aa64isar1; diff --git a/target/arm/helper.c b/target/arm/helper.c index e2d5c8e34f..acd23c53ca 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -22,6 +22,8 @@ #include "fpu/softfloat.h" #include "qemu/range.h" #include "qapi/qapi-commands-target.h" +#include "qapi/error.h" +#include "qemu/guest-random.h" #define ARM_CPU_FREQ 1000000000 /* FIXME: 1 GHz, should be configurable */ @@ -5707,43 +5709,82 @@ static const ARMCPRegInfo pauth_reginfo[] = { { .name = "APDAKEYLO_EL1", .state = ARM_CP_STATE_AA64, .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 2, .opc2 = 0, .access = PL1_RW, .accessfn = access_pauth, - .fieldoffset = offsetof(CPUARMState, apda_key.lo) }, + .fieldoffset = offsetof(CPUARMState, keys.apda.lo) }, { .name = "APDAKEYHI_EL1", .state = ARM_CP_STATE_AA64, .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 2, .opc2 = 1, .access = PL1_RW, .accessfn = access_pauth, - .fieldoffset = offsetof(CPUARMState, apda_key.hi) }, + .fieldoffset = offsetof(CPUARMState, keys.apda.hi) }, { .name = "APDBKEYLO_EL1", .state = ARM_CP_STATE_AA64, .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 2, .opc2 = 2, .access = PL1_RW, .accessfn = access_pauth, - .fieldoffset = offsetof(CPUARMState, apdb_key.lo) }, + .fieldoffset = offsetof(CPUARMState, keys.apdb.lo) }, { .name = "APDBKEYHI_EL1", .state = ARM_CP_STATE_AA64, .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 2, .opc2 = 3, .access = PL1_RW, .accessfn = access_pauth, - .fieldoffset = offsetof(CPUARMState, apdb_key.hi) }, + .fieldoffset = offsetof(CPUARMState, keys.apdb.hi) }, { .name = "APGAKEYLO_EL1", .state = ARM_CP_STATE_AA64, .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 3, .opc2 = 0, .access = PL1_RW, .accessfn = access_pauth, - .fieldoffset = offsetof(CPUARMState, apga_key.lo) }, + .fieldoffset = offsetof(CPUARMState, keys.apga.lo) }, { .name = "APGAKEYHI_EL1", .state = ARM_CP_STATE_AA64, .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 3, .opc2 = 1, .access = PL1_RW, .accessfn = access_pauth, - .fieldoffset = offsetof(CPUARMState, apga_key.hi) }, + .fieldoffset = offsetof(CPUARMState, keys.apga.hi) }, { .name = "APIAKEYLO_EL1", .state = ARM_CP_STATE_AA64, .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 1, .opc2 = 0, .access = PL1_RW, .accessfn = access_pauth, - .fieldoffset = offsetof(CPUARMState, apia_key.lo) }, + .fieldoffset = offsetof(CPUARMState, keys.apia.lo) }, { .name = "APIAKEYHI_EL1", .state = ARM_CP_STATE_AA64, .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 1, .opc2 = 1, .access = PL1_RW, .accessfn = access_pauth, - .fieldoffset = offsetof(CPUARMState, apia_key.hi) }, + .fieldoffset = offsetof(CPUARMState, keys.apia.hi) }, { .name = "APIBKEYLO_EL1", .state = ARM_CP_STATE_AA64, .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 1, .opc2 = 2, .access = PL1_RW, .accessfn = access_pauth, - .fieldoffset = offsetof(CPUARMState, apib_key.lo) }, + .fieldoffset = offsetof(CPUARMState, keys.apib.lo) }, { .name = "APIBKEYHI_EL1", .state = ARM_CP_STATE_AA64, .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 1, .opc2 = 3, .access = PL1_RW, .accessfn = access_pauth, - .fieldoffset = offsetof(CPUARMState, apib_key.hi) }, + .fieldoffset = offsetof(CPUARMState, keys.apib.hi) }, + REGINFO_SENTINEL +}; + +static uint64_t rndr_readfn(CPUARMState *env, const ARMCPRegInfo *ri) +{ + Error *err = NULL; + uint64_t ret; + + /* Success sets NZCV = 0000. */ + env->NF = env->CF = env->VF = 0, env->ZF = 1; + + if (qemu_guest_getrandom(&ret, sizeof(ret), &err) < 0) { + /* + * ??? Failed, for unknown reasons in the crypto subsystem. + * The best we can do is log the reason and return the + * timed-out indication to the guest. There is no reason + * we know to expect this failure to be transitory, so the + * guest may well hang retrying the operation. + */ + qemu_log_mask(LOG_UNIMP, "%s: Crypto failure: %s", + ri->name, error_get_pretty(err)); + error_free(err); + + env->ZF = 0; /* NZCF = 0100 */ + return 0; + } + return ret; +} + +/* We do not support re-seeding, so the two registers operate the same. */ +static const ARMCPRegInfo rndr_reginfo[] = { + { .name = "RNDR", .state = ARM_CP_STATE_AA64, + .type = ARM_CP_NO_RAW | ARM_CP_SUPPRESS_TB_END | ARM_CP_IO, + .opc0 = 3, .opc1 = 3, .crn = 2, .crm = 4, .opc2 = 0, + .access = PL0_R, .readfn = rndr_readfn }, + { .name = "RNDRRS", .state = ARM_CP_STATE_AA64, + .type = ARM_CP_NO_RAW | ARM_CP_SUPPRESS_TB_END | ARM_CP_IO, + .opc0 = 3, .opc1 = 3, .crn = 2, .crm = 4, .opc2 = 1, + .access = PL0_R, .readfn = rndr_readfn }, REGINFO_SENTINEL }; #endif @@ -6690,6 +6731,9 @@ void register_cp_regs_for_features(ARMCPU *cpu) if (cpu_isar_feature(aa64_pauth, cpu)) { define_arm_cp_regs(cpu, pauth_reginfo); } + if (cpu_isar_feature(aa64_rndr, cpu)) { + define_arm_cp_regs(cpu, rndr_reginfo); + } #endif /* diff --git a/target/arm/pauth_helper.c b/target/arm/pauth_helper.c index d750f96edf..7f30ae7395 100644 --- a/target/arm/pauth_helper.c +++ b/target/arm/pauth_helper.c @@ -403,7 +403,7 @@ uint64_t HELPER(pacia)(CPUARMState *env, uint64_t x, uint64_t y) return x; } pauth_check_trap(env, el, GETPC()); - return pauth_addpac(env, x, y, &env->apia_key, false); + return pauth_addpac(env, x, y, &env->keys.apia, false); } uint64_t HELPER(pacib)(CPUARMState *env, uint64_t x, uint64_t y) @@ -413,7 +413,7 @@ uint64_t HELPER(pacib)(CPUARMState *env, uint64_t x, uint64_t y) return x; } pauth_check_trap(env, el, GETPC()); - return pauth_addpac(env, x, y, &env->apib_key, false); + return pauth_addpac(env, x, y, &env->keys.apib, false); } uint64_t HELPER(pacda)(CPUARMState *env, uint64_t x, uint64_t y) @@ -423,7 +423,7 @@ uint64_t HELPER(pacda)(CPUARMState *env, uint64_t x, uint64_t y) return x; } pauth_check_trap(env, el, GETPC()); - return pauth_addpac(env, x, y, &env->apda_key, true); + return pauth_addpac(env, x, y, &env->keys.apda, true); } uint64_t HELPER(pacdb)(CPUARMState *env, uint64_t x, uint64_t y) @@ -433,7 +433,7 @@ uint64_t HELPER(pacdb)(CPUARMState *env, uint64_t x, uint64_t y) return x; } pauth_check_trap(env, el, GETPC()); - return pauth_addpac(env, x, y, &env->apdb_key, true); + return pauth_addpac(env, x, y, &env->keys.apdb, true); } uint64_t HELPER(pacga)(CPUARMState *env, uint64_t x, uint64_t y) @@ -441,7 +441,7 @@ uint64_t HELPER(pacga)(CPUARMState *env, uint64_t x, uint64_t y) uint64_t pac; pauth_check_trap(env, arm_current_el(env), GETPC()); - pac = pauth_computepac(x, y, env->apga_key); + pac = pauth_computepac(x, y, env->keys.apga); return pac & 0xffffffff00000000ull; } @@ -453,7 +453,7 @@ uint64_t HELPER(autia)(CPUARMState *env, uint64_t x, uint64_t y) return x; } pauth_check_trap(env, el, GETPC()); - return pauth_auth(env, x, y, &env->apia_key, false, 0); + return pauth_auth(env, x, y, &env->keys.apia, false, 0); } uint64_t HELPER(autib)(CPUARMState *env, uint64_t x, uint64_t y) @@ -463,7 +463,7 @@ uint64_t HELPER(autib)(CPUARMState *env, uint64_t x, uint64_t y) return x; } pauth_check_trap(env, el, GETPC()); - return pauth_auth(env, x, y, &env->apib_key, false, 1); + return pauth_auth(env, x, y, &env->keys.apib, false, 1); } uint64_t HELPER(autda)(CPUARMState *env, uint64_t x, uint64_t y) @@ -473,7 +473,7 @@ uint64_t HELPER(autda)(CPUARMState *env, uint64_t x, uint64_t y) return x; } pauth_check_trap(env, el, GETPC()); - return pauth_auth(env, x, y, &env->apda_key, true, 0); + return pauth_auth(env, x, y, &env->keys.apda, true, 0); } uint64_t HELPER(autdb)(CPUARMState *env, uint64_t x, uint64_t y) @@ -483,7 +483,7 @@ uint64_t HELPER(autdb)(CPUARMState *env, uint64_t x, uint64_t y) return x; } pauth_check_trap(env, el, GETPC()); - return pauth_auth(env, x, y, &env->apdb_key, true, 1); + return pauth_auth(env, x, y, &env->keys.apdb, true, 1); } uint64_t HELPER(xpaci)(CPUARMState *env, uint64_t a) |