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-rw-r--r--target-arm/machine.c330
1 files changed, 330 insertions, 0 deletions
diff --git a/target-arm/machine.c b/target-arm/machine.c
new file mode 100644
index 00000000..32adfe79
--- /dev/null
+++ b/target-arm/machine.c
@@ -0,0 +1,330 @@
+#include "hw/hw.h"
+#include "hw/boards.h"
+#include "sysemu/kvm.h"
+#include "kvm_arm.h"
+#include "internals.h"
+
+static bool vfp_needed(void *opaque)
+{
+ ARMCPU *cpu = opaque;
+ CPUARMState *env = &cpu->env;
+
+ return arm_feature(env, ARM_FEATURE_VFP);
+}
+
+static int get_fpscr(QEMUFile *f, void *opaque, size_t size)
+{
+ ARMCPU *cpu = opaque;
+ CPUARMState *env = &cpu->env;
+ uint32_t val = qemu_get_be32(f);
+
+ vfp_set_fpscr(env, val);
+ return 0;
+}
+
+static void put_fpscr(QEMUFile *f, void *opaque, size_t size)
+{
+ ARMCPU *cpu = opaque;
+ CPUARMState *env = &cpu->env;
+
+ qemu_put_be32(f, vfp_get_fpscr(env));
+}
+
+static const VMStateInfo vmstate_fpscr = {
+ .name = "fpscr",
+ .get = get_fpscr,
+ .put = put_fpscr,
+};
+
+static const VMStateDescription vmstate_vfp = {
+ .name = "cpu/vfp",
+ .version_id = 3,
+ .minimum_version_id = 3,
+ .needed = vfp_needed,
+ .fields = (VMStateField[]) {
+ VMSTATE_FLOAT64_ARRAY(env.vfp.regs, ARMCPU, 64),
+ /* The xregs array is a little awkward because element 1 (FPSCR)
+ * requires a specific accessor, so we have to split it up in
+ * the vmstate:
+ */
+ VMSTATE_UINT32(env.vfp.xregs[0], ARMCPU),
+ VMSTATE_UINT32_SUB_ARRAY(env.vfp.xregs, ARMCPU, 2, 14),
+ {
+ .name = "fpscr",
+ .version_id = 0,
+ .size = sizeof(uint32_t),
+ .info = &vmstate_fpscr,
+ .flags = VMS_SINGLE,
+ .offset = 0,
+ },
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static bool iwmmxt_needed(void *opaque)
+{
+ ARMCPU *cpu = opaque;
+ CPUARMState *env = &cpu->env;
+
+ return arm_feature(env, ARM_FEATURE_IWMMXT);
+}
+
+static const VMStateDescription vmstate_iwmmxt = {
+ .name = "cpu/iwmmxt",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .needed = iwmmxt_needed,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT64_ARRAY(env.iwmmxt.regs, ARMCPU, 16),
+ VMSTATE_UINT32_ARRAY(env.iwmmxt.cregs, ARMCPU, 16),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static bool m_needed(void *opaque)
+{
+ ARMCPU *cpu = opaque;
+ CPUARMState *env = &cpu->env;
+
+ return arm_feature(env, ARM_FEATURE_M);
+}
+
+static const VMStateDescription vmstate_m = {
+ .name = "cpu/m",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .needed = m_needed,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(env.v7m.other_sp, ARMCPU),
+ VMSTATE_UINT32(env.v7m.vecbase, ARMCPU),
+ VMSTATE_UINT32(env.v7m.basepri, ARMCPU),
+ VMSTATE_UINT32(env.v7m.control, ARMCPU),
+ VMSTATE_INT32(env.v7m.current_sp, ARMCPU),
+ VMSTATE_INT32(env.v7m.exception, ARMCPU),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static bool thumb2ee_needed(void *opaque)
+{
+ ARMCPU *cpu = opaque;
+ CPUARMState *env = &cpu->env;
+
+ return arm_feature(env, ARM_FEATURE_THUMB2EE);
+}
+
+static const VMStateDescription vmstate_thumb2ee = {
+ .name = "cpu/thumb2ee",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .needed = thumb2ee_needed,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(env.teecr, ARMCPU),
+ VMSTATE_UINT32(env.teehbr, ARMCPU),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static bool pmsav7_needed(void *opaque)
+{
+ ARMCPU *cpu = opaque;
+ CPUARMState *env = &cpu->env;
+
+ return arm_feature(env, ARM_FEATURE_MPU) &&
+ arm_feature(env, ARM_FEATURE_V7);
+}
+
+static bool pmsav7_rgnr_vmstate_validate(void *opaque, int version_id)
+{
+ ARMCPU *cpu = opaque;
+
+ return cpu->env.cp15.c6_rgnr < cpu->pmsav7_dregion;
+}
+
+static const VMStateDescription vmstate_pmsav7 = {
+ .name = "cpu/pmsav7",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .needed = pmsav7_needed,
+ .fields = (VMStateField[]) {
+ VMSTATE_VARRAY_UINT32(env.pmsav7.drbar, ARMCPU, pmsav7_dregion, 0,
+ vmstate_info_uint32, uint32_t),
+ VMSTATE_VARRAY_UINT32(env.pmsav7.drsr, ARMCPU, pmsav7_dregion, 0,
+ vmstate_info_uint32, uint32_t),
+ VMSTATE_VARRAY_UINT32(env.pmsav7.dracr, ARMCPU, pmsav7_dregion, 0,
+ vmstate_info_uint32, uint32_t),
+ VMSTATE_VALIDATE("rgnr is valid", pmsav7_rgnr_vmstate_validate),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static int get_cpsr(QEMUFile *f, void *opaque, size_t size)
+{
+ ARMCPU *cpu = opaque;
+ CPUARMState *env = &cpu->env;
+ uint32_t val = qemu_get_be32(f);
+
+ env->aarch64 = ((val & PSTATE_nRW) == 0);
+
+ if (is_a64(env)) {
+ pstate_write(env, val);
+ return 0;
+ }
+
+ /* Avoid mode switch when restoring CPSR */
+ env->uncached_cpsr = val & CPSR_M;
+ cpsr_write(env, val, 0xffffffff);
+ return 0;
+}
+
+static void put_cpsr(QEMUFile *f, void *opaque, size_t size)
+{
+ ARMCPU *cpu = opaque;
+ CPUARMState *env = &cpu->env;
+ uint32_t val;
+
+ if (is_a64(env)) {
+ val = pstate_read(env);
+ } else {
+ val = cpsr_read(env);
+ }
+
+ qemu_put_be32(f, val);
+}
+
+static const VMStateInfo vmstate_cpsr = {
+ .name = "cpsr",
+ .get = get_cpsr,
+ .put = put_cpsr,
+};
+
+static void cpu_pre_save(void *opaque)
+{
+ ARMCPU *cpu = opaque;
+
+ if (kvm_enabled()) {
+ if (!write_kvmstate_to_list(cpu)) {
+ /* This should never fail */
+ abort();
+ }
+ } else {
+ if (!write_cpustate_to_list(cpu)) {
+ /* This should never fail. */
+ abort();
+ }
+ }
+
+ cpu->cpreg_vmstate_array_len = cpu->cpreg_array_len;
+ memcpy(cpu->cpreg_vmstate_indexes, cpu->cpreg_indexes,
+ cpu->cpreg_array_len * sizeof(uint64_t));
+ memcpy(cpu->cpreg_vmstate_values, cpu->cpreg_values,
+ cpu->cpreg_array_len * sizeof(uint64_t));
+}
+
+static int cpu_post_load(void *opaque, int version_id)
+{
+ ARMCPU *cpu = opaque;
+ int i, v;
+
+ /* Update the values list from the incoming migration data.
+ * Anything in the incoming data which we don't know about is
+ * a migration failure; anything we know about but the incoming
+ * data doesn't specify retains its current (reset) value.
+ * The indexes list remains untouched -- we only inspect the
+ * incoming migration index list so we can match the values array
+ * entries with the right slots in our own values array.
+ */
+
+ for (i = 0, v = 0; i < cpu->cpreg_array_len
+ && v < cpu->cpreg_vmstate_array_len; i++) {
+ if (cpu->cpreg_vmstate_indexes[v] > cpu->cpreg_indexes[i]) {
+ /* register in our list but not incoming : skip it */
+ continue;
+ }
+ if (cpu->cpreg_vmstate_indexes[v] < cpu->cpreg_indexes[i]) {
+ /* register in their list but not ours: fail migration */
+ return -1;
+ }
+ /* matching register, copy the value over */
+ cpu->cpreg_values[i] = cpu->cpreg_vmstate_values[v];
+ v++;
+ }
+
+ if (kvm_enabled()) {
+ if (!write_list_to_kvmstate(cpu, KVM_PUT_FULL_STATE)) {
+ return -1;
+ }
+ /* Note that it's OK for the TCG side not to know about
+ * every register in the list; KVM is authoritative if
+ * we're using it.
+ */
+ write_list_to_cpustate(cpu);
+ } else {
+ if (!write_list_to_cpustate(cpu)) {
+ return -1;
+ }
+ }
+
+ hw_breakpoint_update_all(cpu);
+ hw_watchpoint_update_all(cpu);
+
+ return 0;
+}
+
+const VMStateDescription vmstate_arm_cpu = {
+ .name = "cpu",
+ .version_id = 22,
+ .minimum_version_id = 22,
+ .pre_save = cpu_pre_save,
+ .post_load = cpu_post_load,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32_ARRAY(env.regs, ARMCPU, 16),
+ VMSTATE_UINT64_ARRAY(env.xregs, ARMCPU, 32),
+ VMSTATE_UINT64(env.pc, ARMCPU),
+ {
+ .name = "cpsr",
+ .version_id = 0,
+ .size = sizeof(uint32_t),
+ .info = &vmstate_cpsr,
+ .flags = VMS_SINGLE,
+ .offset = 0,
+ },
+ VMSTATE_UINT32(env.spsr, ARMCPU),
+ VMSTATE_UINT64_ARRAY(env.banked_spsr, ARMCPU, 8),
+ VMSTATE_UINT32_ARRAY(env.banked_r13, ARMCPU, 8),
+ VMSTATE_UINT32_ARRAY(env.banked_r14, ARMCPU, 8),
+ VMSTATE_UINT32_ARRAY(env.usr_regs, ARMCPU, 5),
+ VMSTATE_UINT32_ARRAY(env.fiq_regs, ARMCPU, 5),
+ VMSTATE_UINT64_ARRAY(env.elr_el, ARMCPU, 4),
+ VMSTATE_UINT64_ARRAY(env.sp_el, ARMCPU, 4),
+ /* The length-check must come before the arrays to avoid
+ * incoming data possibly overflowing the array.
+ */
+ VMSTATE_INT32_POSITIVE_LE(cpreg_vmstate_array_len, ARMCPU),
+ VMSTATE_VARRAY_INT32(cpreg_vmstate_indexes, ARMCPU,
+ cpreg_vmstate_array_len,
+ 0, vmstate_info_uint64, uint64_t),
+ VMSTATE_VARRAY_INT32(cpreg_vmstate_values, ARMCPU,
+ cpreg_vmstate_array_len,
+ 0, vmstate_info_uint64, uint64_t),
+ VMSTATE_UINT64(env.exclusive_addr, ARMCPU),
+ VMSTATE_UINT64(env.exclusive_val, ARMCPU),
+ VMSTATE_UINT64(env.exclusive_high, ARMCPU),
+ VMSTATE_UINT64(env.features, ARMCPU),
+ VMSTATE_UINT32(env.exception.syndrome, ARMCPU),
+ VMSTATE_UINT32(env.exception.fsr, ARMCPU),
+ VMSTATE_UINT64(env.exception.vaddress, ARMCPU),
+ VMSTATE_TIMER_PTR(gt_timer[GTIMER_PHYS], ARMCPU),
+ VMSTATE_TIMER_PTR(gt_timer[GTIMER_VIRT], ARMCPU),
+ VMSTATE_BOOL(powered_off, ARMCPU),
+ VMSTATE_END_OF_LIST()
+ },
+ .subsections = (const VMStateDescription*[]) {
+ &vmstate_vfp,
+ &vmstate_iwmmxt,
+ &vmstate_m,
+ &vmstate_thumb2ee,
+ &vmstate_pmsav7,
+ NULL
+ }
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-02 11:20:29 +0000