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authorAlexey Kardashevskiy <aik@ozlabs.ru>2013-07-18 14:32:54 -0500
committerAnthony Liguori <aliguori@us.ibm.com>2013-07-29 10:37:04 -0500
commita90db1584a00dc1d1439dc7729d99674b666b85e (patch)
tree6141d78c5b7ed1f21a98ccad141ecf083d6e3218 /target-ppc/machine.c
parentfdc43322c978d78e79e692872dcec7b4f6a447f1 (diff)
downloadqemu-arm-a90db1584a00dc1d1439dc7729d99674b666b85e.tar.gz
target-ppc: Convert ppc cpu savevm to VMStateDescription
The savevm code for the powerpc cpu emulation is currently based around the old register_savevm() rather than register_vmstate() method. It's also rather broken, missing some important state on some CPU models. This patch completely rewrites the savevm for target-ppc, using the new VMStateDescription approach. Exactly what needs to be saved in what configurations has been more carefully examined, too. This introduces a new version (5) of the cpu save format. The old load function is retained to support version 4 images. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Message-id: 1374175984-8930-2-git-send-email-aliguori@us.ibm.com [aik: ppc cpu savevm convertion fixed to use PowerPCCPU instead of CPUPPCState] Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'target-ppc/machine.c')
-rw-r--r--target-ppc/machine.c531
1 files changed, 443 insertions, 88 deletions
diff --git a/target-ppc/machine.c b/target-ppc/machine.c
index 2d10adb60d..12e1512996 100644
--- a/target-ppc/machine.c
+++ b/target-ppc/machine.c
@@ -1,96 +1,12 @@
#include "hw/hw.h"
#include "hw/boards.h"
#include "sysemu/kvm.h"
+#include "helper_regs.h"
-void cpu_save(QEMUFile *f, void *opaque)
+static int cpu_load_old(QEMUFile *f, void *opaque, int version_id)
{
- CPUPPCState *env = (CPUPPCState *)opaque;
- unsigned int i, j;
- uint32_t fpscr;
- target_ulong xer;
-
- for (i = 0; i < 32; i++)
- qemu_put_betls(f, &env->gpr[i]);
-#if !defined(TARGET_PPC64)
- for (i = 0; i < 32; i++)
- qemu_put_betls(f, &env->gprh[i]);
-#endif
- qemu_put_betls(f, &env->lr);
- qemu_put_betls(f, &env->ctr);
- for (i = 0; i < 8; i++)
- qemu_put_be32s(f, &env->crf[i]);
- xer = cpu_read_xer(env);
- qemu_put_betls(f, &xer);
- qemu_put_betls(f, &env->reserve_addr);
- qemu_put_betls(f, &env->msr);
- for (i = 0; i < 4; i++)
- qemu_put_betls(f, &env->tgpr[i]);
- for (i = 0; i < 32; i++) {
- union {
- float64 d;
- uint64_t l;
- } u;
- u.d = env->fpr[i];
- qemu_put_be64(f, u.l);
- }
- fpscr = env->fpscr;
- qemu_put_be32s(f, &fpscr);
- qemu_put_sbe32s(f, &env->access_type);
-#if defined(TARGET_PPC64)
- qemu_put_betls(f, &env->spr[SPR_ASR]);
- qemu_put_sbe32s(f, &env->slb_nr);
-#endif
- qemu_put_betls(f, &env->spr[SPR_SDR1]);
- for (i = 0; i < 32; i++)
- qemu_put_betls(f, &env->sr[i]);
- for (i = 0; i < 2; i++)
- for (j = 0; j < 8; j++)
- qemu_put_betls(f, &env->DBAT[i][j]);
- for (i = 0; i < 2; i++)
- for (j = 0; j < 8; j++)
- qemu_put_betls(f, &env->IBAT[i][j]);
- qemu_put_sbe32s(f, &env->nb_tlb);
- qemu_put_sbe32s(f, &env->tlb_per_way);
- qemu_put_sbe32s(f, &env->nb_ways);
- qemu_put_sbe32s(f, &env->last_way);
- qemu_put_sbe32s(f, &env->id_tlbs);
- qemu_put_sbe32s(f, &env->nb_pids);
- if (env->tlb.tlb6) {
- // XXX assumes 6xx
- for (i = 0; i < env->nb_tlb; i++) {
- qemu_put_betls(f, &env->tlb.tlb6[i].pte0);
- qemu_put_betls(f, &env->tlb.tlb6[i].pte1);
- qemu_put_betls(f, &env->tlb.tlb6[i].EPN);
- }
- }
- for (i = 0; i < 4; i++)
- qemu_put_betls(f, &env->pb[i]);
- for (i = 0; i < 1024; i++)
- qemu_put_betls(f, &env->spr[i]);
- qemu_put_be32s(f, &env->vscr);
- qemu_put_be64s(f, &env->spe_acc);
- qemu_put_be32s(f, &env->spe_fscr);
- qemu_put_betls(f, &env->msr_mask);
- qemu_put_be32s(f, &env->flags);
- qemu_put_sbe32s(f, &env->error_code);
- qemu_put_be32s(f, &env->pending_interrupts);
- qemu_put_be32s(f, &env->irq_input_state);
- for (i = 0; i < POWERPC_EXCP_NB; i++)
- qemu_put_betls(f, &env->excp_vectors[i]);
- qemu_put_betls(f, &env->excp_prefix);
- qemu_put_betls(f, &env->ivor_mask);
- qemu_put_betls(f, &env->ivpr_mask);
- qemu_put_betls(f, &env->hreset_vector);
- qemu_put_betls(f, &env->nip);
- qemu_put_betls(f, &env->hflags);
- qemu_put_betls(f, &env->hflags_nmsr);
- qemu_put_sbe32s(f, &env->mmu_idx);
- qemu_put_sbe32(f, 0);
-}
-
-int cpu_load(QEMUFile *f, void *opaque, int version_id)
-{
- CPUPPCState *env = (CPUPPCState *)opaque;
+ PowerPCCPU *cpu = opaque;
+ CPUPPCState *env = &cpu->env;
unsigned int i, j;
target_ulong sdr1;
uint32_t fpscr;
@@ -177,3 +93,442 @@ int cpu_load(QEMUFile *f, void *opaque, int version_id)
return 0;
}
+
+static int get_avr(QEMUFile *f, void *pv, size_t size)
+{
+ ppc_avr_t *v = pv;
+
+ v->u64[0] = qemu_get_be64(f);
+ v->u64[1] = qemu_get_be64(f);
+
+ return 0;
+}
+
+static void put_avr(QEMUFile *f, void *pv, size_t size)
+{
+ ppc_avr_t *v = pv;
+
+ qemu_put_be64(f, v->u64[0]);
+ qemu_put_be64(f, v->u64[1]);
+}
+
+const VMStateInfo vmstate_info_avr = {
+ .name = "avr",
+ .get = get_avr,
+ .put = put_avr,
+};
+
+#define VMSTATE_AVR_ARRAY_V(_f, _s, _n, _v) \
+ VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_avr, ppc_avr_t)
+
+#define VMSTATE_AVR_ARRAY(_f, _s, _n) \
+ VMSTATE_AVR_ARRAY_V(_f, _s, _n, 0)
+
+static void cpu_pre_save(void *opaque)
+{
+ PowerPCCPU *cpu = opaque;
+ CPUPPCState *env = &cpu->env;
+ int i;
+
+ env->spr[SPR_LR] = env->lr;
+ env->spr[SPR_CTR] = env->ctr;
+ env->spr[SPR_XER] = env->xer;
+#if defined(TARGET_PPC64)
+ env->spr[SPR_CFAR] = env->cfar;
+#endif
+ env->spr[SPR_BOOKE_SPEFSCR] = env->spe_fscr;
+
+ for (i = 0; (i < 4) && (i < env->nb_BATs); i++) {
+ env->spr[SPR_DBAT0U + 2*i] = env->DBAT[0][i];
+ env->spr[SPR_DBAT0U + 2*i + 1] = env->DBAT[1][i];
+ env->spr[SPR_IBAT0U + 2*i] = env->IBAT[0][i];
+ env->spr[SPR_IBAT0U + 2*i + 1] = env->IBAT[1][i];
+ }
+ for (i = 0; (i < 4) && ((i+4) < env->nb_BATs); i++) {
+ env->spr[SPR_DBAT4U + 2*i] = env->DBAT[0][i+4];
+ env->spr[SPR_DBAT4U + 2*i + 1] = env->DBAT[1][i+4];
+ env->spr[SPR_IBAT4U + 2*i] = env->IBAT[0][i+4];
+ env->spr[SPR_IBAT4U + 2*i + 1] = env->IBAT[1][i+4];
+ }
+}
+
+static int cpu_post_load(void *opaque, int version_id)
+{
+ PowerPCCPU *cpu = opaque;
+ CPUPPCState *env = &cpu->env;
+ int i;
+
+ env->lr = env->spr[SPR_LR];
+ env->ctr = env->spr[SPR_CTR];
+ env->xer = env->spr[SPR_XER];
+#if defined(TARGET_PPC64)
+ env->cfar = env->spr[SPR_CFAR];
+#endif
+ env->spe_fscr = env->spr[SPR_BOOKE_SPEFSCR];
+
+ for (i = 0; (i < 4) && (i < env->nb_BATs); i++) {
+ env->DBAT[0][i] = env->spr[SPR_DBAT0U + 2*i];
+ env->DBAT[1][i] = env->spr[SPR_DBAT0U + 2*i + 1];
+ env->IBAT[0][i] = env->spr[SPR_IBAT0U + 2*i];
+ env->IBAT[1][i] = env->spr[SPR_IBAT0U + 2*i + 1];
+ }
+ for (i = 0; (i < 4) && ((i+4) < env->nb_BATs); i++) {
+ env->DBAT[0][i+4] = env->spr[SPR_DBAT4U + 2*i];
+ env->DBAT[1][i+4] = env->spr[SPR_DBAT4U + 2*i + 1];
+ env->IBAT[0][i+4] = env->spr[SPR_IBAT4U + 2*i];
+ env->IBAT[1][i+4] = env->spr[SPR_IBAT4U + 2*i + 1];
+ }
+
+ /* Restore htab_base and htab_mask variables */
+ ppc_store_sdr1(env, env->spr[SPR_SDR1]);
+
+ hreg_compute_hflags(env);
+ hreg_compute_mem_idx(env);
+
+ return 0;
+}
+
+static bool fpu_needed(void *opaque)
+{
+ PowerPCCPU *cpu = opaque;
+
+ return (cpu->env.insns_flags & PPC_FLOAT);
+}
+
+static const VMStateDescription vmstate_fpu = {
+ .name = "cpu/fpu",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField []) {
+ VMSTATE_FLOAT64_ARRAY(env.fpr, PowerPCCPU, 32),
+ VMSTATE_UINTTL(env.fpscr, PowerPCCPU),
+ VMSTATE_END_OF_LIST()
+ },
+};
+
+static bool altivec_needed(void *opaque)
+{
+ PowerPCCPU *cpu = opaque;
+
+ return (cpu->env.insns_flags & PPC_ALTIVEC);
+}
+
+static const VMStateDescription vmstate_altivec = {
+ .name = "cpu/altivec",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField []) {
+ VMSTATE_AVR_ARRAY(env.avr, PowerPCCPU, 32),
+ VMSTATE_UINT32(env.vscr, PowerPCCPU),
+ VMSTATE_END_OF_LIST()
+ },
+};
+
+static bool vsx_needed(void *opaque)
+{
+ PowerPCCPU *cpu = opaque;
+
+ return (cpu->env.insns_flags2 & PPC2_VSX);
+}
+
+static const VMStateDescription vmstate_vsx = {
+ .name = "cpu/vsx",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField []) {
+ VMSTATE_UINT64_ARRAY(env.vsr, PowerPCCPU, 32),
+ VMSTATE_END_OF_LIST()
+ },
+};
+
+static bool sr_needed(void *opaque)
+{
+#ifdef TARGET_PPC64
+ PowerPCCPU *cpu = opaque;
+
+ return !(cpu->env.mmu_model & POWERPC_MMU_64);
+#else
+ return true;
+#endif
+}
+
+static const VMStateDescription vmstate_sr = {
+ .name = "cpu/sr",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField []) {
+ VMSTATE_UINTTL_ARRAY(env.sr, PowerPCCPU, 32),
+ VMSTATE_END_OF_LIST()
+ },
+};
+
+#ifdef TARGET_PPC64
+static int get_slbe(QEMUFile *f, void *pv, size_t size)
+{
+ ppc_slb_t *v = pv;
+
+ v->esid = qemu_get_be64(f);
+ v->vsid = qemu_get_be64(f);
+
+ return 0;
+}
+
+static void put_slbe(QEMUFile *f, void *pv, size_t size)
+{
+ ppc_slb_t *v = pv;
+
+ qemu_put_be64(f, v->esid);
+ qemu_put_be64(f, v->vsid);
+}
+
+const VMStateInfo vmstate_info_slbe = {
+ .name = "slbe",
+ .get = get_slbe,
+ .put = put_slbe,
+};
+
+#define VMSTATE_SLB_ARRAY_V(_f, _s, _n, _v) \
+ VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_slbe, ppc_slb_t)
+
+#define VMSTATE_SLB_ARRAY(_f, _s, _n) \
+ VMSTATE_SLB_ARRAY_V(_f, _s, _n, 0)
+
+static bool slb_needed(void *opaque)
+{
+ PowerPCCPU *cpu = opaque;
+
+ /* We don't support any of the old segment table based 64-bit CPUs */
+ return (cpu->env.mmu_model & POWERPC_MMU_64);
+}
+
+static const VMStateDescription vmstate_slb = {
+ .name = "cpu/slb",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField []) {
+ VMSTATE_INT32_EQUAL(env.slb_nr, PowerPCCPU),
+ VMSTATE_SLB_ARRAY(env.slb, PowerPCCPU, 64),
+ VMSTATE_END_OF_LIST()
+ }
+};
+#endif /* TARGET_PPC64 */
+
+static const VMStateDescription vmstate_tlb6xx_entry = {
+ .name = "cpu/tlb6xx_entry",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField []) {
+ VMSTATE_UINTTL(pte0, ppc6xx_tlb_t),
+ VMSTATE_UINTTL(pte1, ppc6xx_tlb_t),
+ VMSTATE_UINTTL(EPN, ppc6xx_tlb_t),
+ VMSTATE_END_OF_LIST()
+ },
+};
+
+static bool tlb6xx_needed(void *opaque)
+{
+ PowerPCCPU *cpu = opaque;
+ CPUPPCState *env = &cpu->env;
+
+ return env->nb_tlb && (env->tlb_type == TLB_6XX);
+}
+
+static const VMStateDescription vmstate_tlb6xx = {
+ .name = "cpu/tlb6xx",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField []) {
+ VMSTATE_INT32_EQUAL(env.nb_tlb, PowerPCCPU),
+ VMSTATE_STRUCT_VARRAY_POINTER_INT32(env.tlb.tlb6, PowerPCCPU,
+ env.nb_tlb,
+ vmstate_tlb6xx_entry,
+ ppc6xx_tlb_t),
+ VMSTATE_UINTTL_ARRAY(env.tgpr, PowerPCCPU, 4),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static const VMStateDescription vmstate_tlbemb_entry = {
+ .name = "cpu/tlbemb_entry",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField []) {
+ VMSTATE_UINT64(RPN, ppcemb_tlb_t),
+ VMSTATE_UINTTL(EPN, ppcemb_tlb_t),
+ VMSTATE_UINTTL(PID, ppcemb_tlb_t),
+ VMSTATE_UINTTL(size, ppcemb_tlb_t),
+ VMSTATE_UINT32(prot, ppcemb_tlb_t),
+ VMSTATE_UINT32(attr, ppcemb_tlb_t),
+ VMSTATE_END_OF_LIST()
+ },
+};
+
+static bool tlbemb_needed(void *opaque)
+{
+ PowerPCCPU *cpu = opaque;
+ CPUPPCState *env = &cpu->env;
+
+ return env->nb_tlb && (env->tlb_type == TLB_EMB);
+}
+
+static bool pbr403_needed(void *opaque)
+{
+ PowerPCCPU *cpu = opaque;
+ uint32_t pvr = cpu->env.spr[SPR_PVR];
+
+ return (pvr & 0xffff0000) == 0x00200000;
+}
+
+static const VMStateDescription vmstate_pbr403 = {
+ .name = "cpu/pbr403",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField []) {
+ VMSTATE_UINTTL_ARRAY(env.pb, PowerPCCPU, 4),
+ VMSTATE_END_OF_LIST()
+ },
+};
+
+static const VMStateDescription vmstate_tlbemb = {
+ .name = "cpu/tlb6xx",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField []) {
+ VMSTATE_INT32_EQUAL(env.nb_tlb, PowerPCCPU),
+ VMSTATE_STRUCT_VARRAY_POINTER_INT32(env.tlb.tlbe, PowerPCCPU,
+ env.nb_tlb,
+ vmstate_tlbemb_entry,
+ ppcemb_tlb_t),
+ /* 403 protection registers */
+ VMSTATE_END_OF_LIST()
+ },
+ .subsections = (VMStateSubsection []) {
+ {
+ .vmsd = &vmstate_pbr403,
+ .needed = pbr403_needed,
+ } , {
+ /* empty */
+ }
+ }
+};
+
+static const VMStateDescription vmstate_tlbmas_entry = {
+ .name = "cpu/tlbmas_entry",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField []) {
+ VMSTATE_UINT32(mas8, ppcmas_tlb_t),
+ VMSTATE_UINT32(mas1, ppcmas_tlb_t),
+ VMSTATE_UINT64(mas2, ppcmas_tlb_t),
+ VMSTATE_UINT64(mas7_3, ppcmas_tlb_t),
+ VMSTATE_END_OF_LIST()
+ },
+};
+
+static bool tlbmas_needed(void *opaque)
+{
+ PowerPCCPU *cpu = opaque;
+ CPUPPCState *env = &cpu->env;
+
+ return env->nb_tlb && (env->tlb_type == TLB_MAS);
+}
+
+static const VMStateDescription vmstate_tlbmas = {
+ .name = "cpu/tlbmas",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .fields = (VMStateField []) {
+ VMSTATE_INT32_EQUAL(env.nb_tlb, PowerPCCPU),
+ VMSTATE_STRUCT_VARRAY_POINTER_INT32(env.tlb.tlbm, PowerPCCPU,
+ env.nb_tlb,
+ vmstate_tlbmas_entry,
+ ppcmas_tlb_t),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+const VMStateDescription vmstate_ppc_cpu = {
+ .name = "cpu",
+ .version_id = 5,
+ .minimum_version_id = 5,
+ .minimum_version_id_old = 4,
+ .load_state_old = cpu_load_old,
+ .pre_save = cpu_pre_save,
+ .post_load = cpu_post_load,
+ .fields = (VMStateField []) {
+ /* Verify we haven't changed the pvr */
+ VMSTATE_UINTTL_EQUAL(env.spr[SPR_PVR], PowerPCCPU),
+
+ /* User mode architected state */
+ VMSTATE_UINTTL_ARRAY(env.gpr, PowerPCCPU, 32),
+#if !defined(TARGET_PPC64)
+ VMSTATE_UINTTL_ARRAY(env.gprh, PowerPCCPU, 32),
+#endif
+ VMSTATE_UINT32_ARRAY(env.crf, PowerPCCPU, 8),
+ VMSTATE_UINTTL(env.nip, PowerPCCPU),
+
+ /* SPRs */
+ VMSTATE_UINTTL_ARRAY(env.spr, PowerPCCPU, 1024),
+ VMSTATE_UINT64(env.spe_acc, PowerPCCPU),
+
+ /* Reservation */
+ VMSTATE_UINTTL(env.reserve_addr, PowerPCCPU),
+
+ /* Supervisor mode architected state */
+ VMSTATE_UINTTL(env.msr, PowerPCCPU),
+
+ /* Internal state */
+ VMSTATE_UINTTL(env.hflags_nmsr, PowerPCCPU),
+ /* FIXME: access_type? */
+
+ /* Sanity checking */
+ VMSTATE_UINTTL_EQUAL(env.msr_mask, PowerPCCPU),
+ VMSTATE_UINT64_EQUAL(env.insns_flags, PowerPCCPU),
+ VMSTATE_UINT64_EQUAL(env.insns_flags2, PowerPCCPU),
+ VMSTATE_UINT32_EQUAL(env.nb_BATs, PowerPCCPU),
+ VMSTATE_END_OF_LIST()
+ },
+ .subsections = (VMStateSubsection []) {
+ {
+ .vmsd = &vmstate_fpu,
+ .needed = fpu_needed,
+ } , {
+ .vmsd = &vmstate_altivec,
+ .needed = altivec_needed,
+ } , {
+ .vmsd = &vmstate_vsx,
+ .needed = vsx_needed,
+ } , {
+ .vmsd = &vmstate_sr,
+ .needed = sr_needed,
+ } , {
+#ifdef TARGET_PPC64
+ .vmsd = &vmstate_slb,
+ .needed = slb_needed,
+ } , {
+#endif /* TARGET_PPC64 */
+ .vmsd = &vmstate_tlb6xx,
+ .needed = tlb6xx_needed,
+ } , {
+ .vmsd = &vmstate_tlbemb,
+ .needed = tlbemb_needed,
+ } , {
+ .vmsd = &vmstate_tlbmas,
+ .needed = tlbmas_needed,
+ } , {
+ /* empty */
+ }
+ }
+};