*/
#include "qemu/osdep.h"
+#include "qemu-common.h"
#include "target/arm/idau.h"
+#include "qemu/module.h"
#include "qapi/error.h"
#include "qapi/visitor.h"
#include "cpu.h"
#include "internals.h"
-#include "qemu-common.h"
#include "exec/exec-all.h"
#include "hw/qdev-properties.h"
#if !defined(CONFIG_USER_ONLY)
#include "hw/loader.h"
#endif
#include "sysemu/sysemu.h"
+#include "sysemu/tcg.h"
#include "sysemu/hw_accel.h"
#include "kvm_arm.h"
#include "disas/capstone.h"
static void arm_cpu_initfn(Object *obj)
{
- CPUState *cs = CPU(obj);
ARMCPU *cpu = ARM_CPU(obj);
- cs->env_ptr = &cpu->env;
+ cpu_set_cpustate_pointers(cpu);
cpu->cp_regs = g_hash_table_new_full(g_int_hash, g_int_equal,
g_free, cpreg_hashtable_data_destroy);
static Property arm_cpu_has_pmu_property =
DEFINE_PROP_BOOL("pmu", ARMCPU, has_pmu, true);
+static Property arm_cpu_has_vfp_property =
+ DEFINE_PROP_BOOL("vfp", ARMCPU, has_vfp, true);
+
+static Property arm_cpu_has_neon_property =
+ DEFINE_PROP_BOOL("neon", ARMCPU, has_neon, true);
+
+static Property arm_cpu_has_dsp_property =
+ DEFINE_PROP_BOOL("dsp", ARMCPU, has_dsp, true);
+
static Property arm_cpu_has_mpu_property =
DEFINE_PROP_BOOL("has-mpu", ARMCPU, has_mpu, true);
if (arm_feature(&cpu->env, ARM_FEATURE_M)) {
set_feature(&cpu->env, ARM_FEATURE_PMSA);
}
+ /* Similarly for the VFP feature bits */
+ if (arm_feature(&cpu->env, ARM_FEATURE_VFP4)) {
+ set_feature(&cpu->env, ARM_FEATURE_VFP3);
+ }
+ if (arm_feature(&cpu->env, ARM_FEATURE_VFP3)) {
+ set_feature(&cpu->env, ARM_FEATURE_VFP);
+ }
if (arm_feature(&cpu->env, ARM_FEATURE_CBAR) ||
arm_feature(&cpu->env, ARM_FEATURE_CBAR_RO)) {
&error_abort);
}
+ /*
+ * Allow user to turn off VFP and Neon support, but only for TCG --
+ * KVM does not currently allow us to lie to the guest about its
+ * ID/feature registers, so the guest always sees what the host has.
+ */
+ if (arm_feature(&cpu->env, ARM_FEATURE_VFP)) {
+ cpu->has_vfp = true;
+ if (!kvm_enabled()) {
+ qdev_property_add_static(DEVICE(obj), &arm_cpu_has_vfp_property,
+ &error_abort);
+ }
+ }
+
+ if (arm_feature(&cpu->env, ARM_FEATURE_NEON)) {
+ cpu->has_neon = true;
+ if (!kvm_enabled()) {
+ qdev_property_add_static(DEVICE(obj), &arm_cpu_has_neon_property,
+ &error_abort);
+ }
+ }
+
+ if (arm_feature(&cpu->env, ARM_FEATURE_M) &&
+ arm_feature(&cpu->env, ARM_FEATURE_THUMB_DSP)) {
+ qdev_property_add_static(DEVICE(obj), &arm_cpu_has_dsp_property,
+ &error_abort);
+ }
+
if (arm_feature(&cpu->env, ARM_FEATURE_PMSA)) {
qdev_property_add_static(DEVICE(obj), &arm_cpu_has_mpu_property,
&error_abort);
return;
}
+ if (arm_feature(env, ARM_FEATURE_AARCH64) &&
+ cpu->has_vfp != cpu->has_neon) {
+ /*
+ * This is an architectural requirement for AArch64; AArch32 is
+ * more flexible and permits VFP-no-Neon and Neon-no-VFP.
+ */
+ error_setg(errp,
+ "AArch64 CPUs must have both VFP and Neon or neither");
+ return;
+ }
+
+ if (!cpu->has_vfp) {
+ uint64_t t;
+ uint32_t u;
+
+ unset_feature(env, ARM_FEATURE_VFP);
+ unset_feature(env, ARM_FEATURE_VFP3);
+ unset_feature(env, ARM_FEATURE_VFP4);
+
+ t = cpu->isar.id_aa64isar1;
+ t = FIELD_DP64(t, ID_AA64ISAR1, JSCVT, 0);
+ cpu->isar.id_aa64isar1 = t;
+
+ t = cpu->isar.id_aa64pfr0;
+ t = FIELD_DP64(t, ID_AA64PFR0, FP, 0xf);
+ cpu->isar.id_aa64pfr0 = t;
+
+ u = cpu->isar.id_isar6;
+ u = FIELD_DP32(u, ID_ISAR6, JSCVT, 0);
+ cpu->isar.id_isar6 = u;
+
+ u = cpu->isar.mvfr0;
+ u = FIELD_DP32(u, MVFR0, FPSP, 0);
+ u = FIELD_DP32(u, MVFR0, FPDP, 0);
+ u = FIELD_DP32(u, MVFR0, FPTRAP, 0);
+ u = FIELD_DP32(u, MVFR0, FPDIVIDE, 0);
+ u = FIELD_DP32(u, MVFR0, FPSQRT, 0);
+ u = FIELD_DP32(u, MVFR0, FPSHVEC, 0);
+ u = FIELD_DP32(u, MVFR0, FPROUND, 0);
+ cpu->isar.mvfr0 = u;
+
+ u = cpu->isar.mvfr1;
+ u = FIELD_DP32(u, MVFR1, FPFTZ, 0);
+ u = FIELD_DP32(u, MVFR1, FPDNAN, 0);
+ u = FIELD_DP32(u, MVFR1, FPHP, 0);
+ cpu->isar.mvfr1 = u;
+
+ u = cpu->isar.mvfr2;
+ u = FIELD_DP32(u, MVFR2, FPMISC, 0);
+ cpu->isar.mvfr2 = u;
+ }
+
+ if (!cpu->has_neon) {
+ uint64_t t;
+ uint32_t u;
+
+ unset_feature(env, ARM_FEATURE_NEON);
+
+ t = cpu->isar.id_aa64isar0;
+ t = FIELD_DP64(t, ID_AA64ISAR0, DP, 0);
+ cpu->isar.id_aa64isar0 = t;
+
+ t = cpu->isar.id_aa64isar1;
+ t = FIELD_DP64(t, ID_AA64ISAR1, FCMA, 0);
+ cpu->isar.id_aa64isar1 = t;
+
+ t = cpu->isar.id_aa64pfr0;
+ t = FIELD_DP64(t, ID_AA64PFR0, ADVSIMD, 0xf);
+ cpu->isar.id_aa64pfr0 = t;
+
+ u = cpu->isar.id_isar5;
+ u = FIELD_DP32(u, ID_ISAR5, RDM, 0);
+ u = FIELD_DP32(u, ID_ISAR5, VCMA, 0);
+ cpu->isar.id_isar5 = u;
+
+ u = cpu->isar.id_isar6;
+ u = FIELD_DP32(u, ID_ISAR6, DP, 0);
+ u = FIELD_DP32(u, ID_ISAR6, FHM, 0);
+ cpu->isar.id_isar6 = u;
+
+ u = cpu->isar.mvfr1;
+ u = FIELD_DP32(u, MVFR1, SIMDLS, 0);
+ u = FIELD_DP32(u, MVFR1, SIMDINT, 0);
+ u = FIELD_DP32(u, MVFR1, SIMDSP, 0);
+ u = FIELD_DP32(u, MVFR1, SIMDHP, 0);
+ u = FIELD_DP32(u, MVFR1, SIMDFMAC, 0);
+ cpu->isar.mvfr1 = u;
+
+ u = cpu->isar.mvfr2;
+ u = FIELD_DP32(u, MVFR2, SIMDMISC, 0);
+ cpu->isar.mvfr2 = u;
+ }
+
+ if (!cpu->has_neon && !cpu->has_vfp) {
+ uint64_t t;
+ uint32_t u;
+
+ t = cpu->isar.id_aa64isar0;
+ t = FIELD_DP64(t, ID_AA64ISAR0, FHM, 0);
+ cpu->isar.id_aa64isar0 = t;
+
+ t = cpu->isar.id_aa64isar1;
+ t = FIELD_DP64(t, ID_AA64ISAR1, FRINTTS, 0);
+ cpu->isar.id_aa64isar1 = t;
+
+ u = cpu->isar.mvfr0;
+ u = FIELD_DP32(u, MVFR0, SIMDREG, 0);
+ cpu->isar.mvfr0 = u;
+ }
+
+ if (arm_feature(env, ARM_FEATURE_M) && !cpu->has_dsp) {
+ uint32_t u;
+
+ unset_feature(env, ARM_FEATURE_THUMB_DSP);
+
+ u = cpu->isar.id_isar1;
+ u = FIELD_DP32(u, ID_ISAR1, EXTEND, 1);
+ cpu->isar.id_isar1 = u;
+
+ u = cpu->isar.id_isar2;
+ u = FIELD_DP32(u, ID_ISAR2, MULTU, 1);
+ u = FIELD_DP32(u, ID_ISAR2, MULTS, 1);
+ cpu->isar.id_isar2 = u;
+
+ u = cpu->isar.id_isar3;
+ u = FIELD_DP32(u, ID_ISAR3, SIMD, 1);
+ u = FIELD_DP32(u, ID_ISAR3, SATURATE, 0);
+ cpu->isar.id_isar3 = u;
+ }
+
/* Some features automatically imply others: */
if (arm_feature(env, ARM_FEATURE_V8)) {
if (arm_feature(env, ARM_FEATURE_M)) {
if (arm_feature(env, ARM_FEATURE_V5)) {
set_feature(env, ARM_FEATURE_V4T);
}
- if (arm_feature(env, ARM_FEATURE_VFP4)) {
- set_feature(env, ARM_FEATURE_VFP3);
- }
- if (arm_feature(env, ARM_FEATURE_VFP3)) {
- set_feature(env, ARM_FEATURE_VFP);
- }
if (arm_feature(env, ARM_FEATURE_LPAE)) {
set_feature(env, ARM_FEATURE_V7MP);
set_feature(env, ARM_FEATURE_PXN);
cortex_r5_initfn(obj);
set_feature(&cpu->env, ARM_FEATURE_VFP3);
+ cpu->isar.mvfr0 = 0x10110221;
+ cpu->isar.mvfr1 = 0x00000011;
}
static const ARMCPRegInfo cortexa8_cp_reginfo[] = {
kvm_arm_set_cpu_features_from_host(cpu);
} else {
cortex_a15_initfn(obj);
+
+ /* old-style VFP short-vector support */
+ cpu->isar.mvfr0 = FIELD_DP32(cpu->isar.mvfr0, MVFR0, FPSHVEC, 1);
+
#ifdef CONFIG_USER_ONLY
/* We don't set these in system emulation mode for the moment,
* since we don't correctly set (all of) the ID registers to
projects / qemu.git / blobdiff