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-rw-r--r--target/ppc/arch_dump.c286
1 files changed, 286 insertions, 0 deletions
diff --git a/target/ppc/arch_dump.c b/target/ppc/arch_dump.c
new file mode 100644
index 0000000000..40282a1f50
--- /dev/null
+++ b/target/ppc/arch_dump.c
@@ -0,0 +1,286 @@
+/*
+ * writing ELF notes for ppc64 arch
+ *
+ *
+ * Copyright IBM, Corp. 2013
+ *
+ * Authors:
+ * Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "elf.h"
+#include "exec/cpu-all.h"
+#include "sysemu/dump.h"
+#include "sysemu/kvm.h"
+
+struct PPC64UserRegStruct {
+ uint64_t gpr[32];
+ uint64_t nip;
+ uint64_t msr;
+ uint64_t orig_gpr3;
+ uint64_t ctr;
+ uint64_t link;
+ uint64_t xer;
+ uint64_t ccr;
+ uint64_t softe;
+ uint64_t trap;
+ uint64_t dar;
+ uint64_t dsisr;
+ uint64_t result;
+} QEMU_PACKED;
+
+struct PPC64ElfPrstatus {
+ char pad1[112];
+ struct PPC64UserRegStruct pr_reg;
+ uint64_t pad2[4];
+} QEMU_PACKED;
+
+
+struct PPC64ElfFpregset {
+ uint64_t fpr[32];
+ uint64_t fpscr;
+} QEMU_PACKED;
+
+
+struct PPC64ElfVmxregset {
+ ppc_avr_t avr[32];
+ ppc_avr_t vscr;
+ union {
+ ppc_avr_t unused;
+ uint32_t value;
+ } vrsave;
+} QEMU_PACKED;
+
+struct PPC64ElfVsxregset {
+ uint64_t vsr[32];
+} QEMU_PACKED;
+
+struct PPC64ElfSperegset {
+ uint32_t evr[32];
+ uint64_t spe_acc;
+ uint32_t spe_fscr;
+} QEMU_PACKED;
+
+typedef struct noteStruct {
+ Elf64_Nhdr hdr;
+ char name[5];
+ char pad3[3];
+ union {
+ struct PPC64ElfPrstatus prstatus;
+ struct PPC64ElfFpregset fpregset;
+ struct PPC64ElfVmxregset vmxregset;
+ struct PPC64ElfVsxregset vsxregset;
+ struct PPC64ElfSperegset speregset;
+ } contents;
+} QEMU_PACKED Note;
+
+typedef struct NoteFuncArg {
+ Note note;
+ DumpState *state;
+} NoteFuncArg;
+
+static void ppc64_write_elf64_prstatus(NoteFuncArg *arg, PowerPCCPU *cpu)
+{
+ int i;
+ uint64_t cr;
+ struct PPC64ElfPrstatus *prstatus;
+ struct PPC64UserRegStruct *reg;
+ Note *note = &arg->note;
+ DumpState *s = arg->state;
+
+ note->hdr.n_type = cpu_to_dump32(s, NT_PRSTATUS);
+
+ prstatus = &note->contents.prstatus;
+ memset(prstatus, 0, sizeof(*prstatus));
+ reg = &prstatus->pr_reg;
+
+ for (i = 0; i < 32; i++) {
+ reg->gpr[i] = cpu_to_dump64(s, cpu->env.gpr[i]);
+ }
+ reg->nip = cpu_to_dump64(s, cpu->env.nip);
+ reg->msr = cpu_to_dump64(s, cpu->env.msr);
+ reg->ctr = cpu_to_dump64(s, cpu->env.ctr);
+ reg->link = cpu_to_dump64(s, cpu->env.lr);
+ reg->xer = cpu_to_dump64(s, cpu_read_xer(&cpu->env));
+
+ cr = 0;
+ for (i = 0; i < 8; i++) {
+ cr |= (cpu->env.crf[i] & 15) << (4 * (7 - i));
+ }
+ reg->ccr = cpu_to_dump64(s, cr);
+}
+
+static void ppc64_write_elf64_fpregset(NoteFuncArg *arg, PowerPCCPU *cpu)
+{
+ int i;
+ struct PPC64ElfFpregset *fpregset;
+ Note *note = &arg->note;
+ DumpState *s = arg->state;
+
+ note->hdr.n_type = cpu_to_dump32(s, NT_PRFPREG);
+
+ fpregset = &note->contents.fpregset;
+ memset(fpregset, 0, sizeof(*fpregset));
+
+ for (i = 0; i < 32; i++) {
+ fpregset->fpr[i] = cpu_to_dump64(s, cpu->env.fpr[i]);
+ }
+ fpregset->fpscr = cpu_to_dump64(s, cpu->env.fpscr);
+}
+
+static void ppc64_write_elf64_vmxregset(NoteFuncArg *arg, PowerPCCPU *cpu)
+{
+ int i;
+ struct PPC64ElfVmxregset *vmxregset;
+ Note *note = &arg->note;
+ DumpState *s = arg->state;
+
+ note->hdr.n_type = cpu_to_dump32(s, NT_PPC_VMX);
+ vmxregset = &note->contents.vmxregset;
+ memset(vmxregset, 0, sizeof(*vmxregset));
+
+ for (i = 0; i < 32; i++) {
+ bool needs_byteswap;
+
+#ifdef HOST_WORDS_BIGENDIAN
+ needs_byteswap = s->dump_info.d_endian == ELFDATA2LSB;
+#else
+ needs_byteswap = s->dump_info.d_endian == ELFDATA2MSB;
+#endif
+
+ if (needs_byteswap) {
+ vmxregset->avr[i].u64[0] = bswap64(cpu->env.avr[i].u64[1]);
+ vmxregset->avr[i].u64[1] = bswap64(cpu->env.avr[i].u64[0]);
+ } else {
+ vmxregset->avr[i].u64[0] = cpu->env.avr[i].u64[0];
+ vmxregset->avr[i].u64[1] = cpu->env.avr[i].u64[1];
+ }
+ }
+ vmxregset->vscr.u32[3] = cpu_to_dump32(s, cpu->env.vscr);
+}
+static void ppc64_write_elf64_vsxregset(NoteFuncArg *arg, PowerPCCPU *cpu)
+{
+ int i;
+ struct PPC64ElfVsxregset *vsxregset;
+ Note *note = &arg->note;
+ DumpState *s = arg->state;
+
+ note->hdr.n_type = cpu_to_dump32(s, NT_PPC_VSX);
+ vsxregset = &note->contents.vsxregset;
+ memset(vsxregset, 0, sizeof(*vsxregset));
+
+ for (i = 0; i < 32; i++) {
+ vsxregset->vsr[i] = cpu_to_dump64(s, cpu->env.vsr[i]);
+ }
+}
+static void ppc64_write_elf64_speregset(NoteFuncArg *arg, PowerPCCPU *cpu)
+{
+ struct PPC64ElfSperegset *speregset;
+ Note *note = &arg->note;
+ DumpState *s = arg->state;
+
+ note->hdr.n_type = cpu_to_dump32(s, NT_PPC_SPE);
+ speregset = &note->contents.speregset;
+ memset(speregset, 0, sizeof(*speregset));
+
+ speregset->spe_acc = cpu_to_dump64(s, cpu->env.spe_acc);
+ speregset->spe_fscr = cpu_to_dump32(s, cpu->env.spe_fscr);
+}
+
+static const struct NoteFuncDescStruct {
+ int contents_size;
+ void (*note_contents_func)(NoteFuncArg *arg, PowerPCCPU *cpu);
+} note_func[] = {
+ {sizeof(((Note *)0)->contents.prstatus), ppc64_write_elf64_prstatus},
+ {sizeof(((Note *)0)->contents.fpregset), ppc64_write_elf64_fpregset},
+ {sizeof(((Note *)0)->contents.vmxregset), ppc64_write_elf64_vmxregset},
+ {sizeof(((Note *)0)->contents.vsxregset), ppc64_write_elf64_vsxregset},
+ {sizeof(((Note *)0)->contents.speregset), ppc64_write_elf64_speregset},
+ { 0, NULL}
+};
+
+typedef struct NoteFuncDescStruct NoteFuncDesc;
+
+int cpu_get_dump_info(ArchDumpInfo *info,
+ const struct GuestPhysBlockList *guest_phys_blocks)
+{
+ PowerPCCPU *cpu = POWERPC_CPU(first_cpu);
+ PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
+
+ info->d_machine = EM_PPC64;
+ info->d_class = ELFCLASS64;
+ if ((*pcc->interrupts_big_endian)(cpu)) {
+ info->d_endian = ELFDATA2MSB;
+ } else {
+ info->d_endian = ELFDATA2LSB;
+ }
+ /* 64KB is the max page size for pseries kernel */
+ if (strncmp(object_get_typename(qdev_get_machine()),
+ "pseries-", 8) == 0) {
+ info->page_size = (1U << 16);
+ }
+
+ return 0;
+}
+
+ssize_t cpu_get_note_size(int class, int machine, int nr_cpus)
+{
+ int name_size = 8; /* "CORE" or "QEMU" rounded */
+ size_t elf_note_size = 0;
+ int note_head_size;
+ const NoteFuncDesc *nf;
+
+ if (class != ELFCLASS64) {
+ return -1;
+ }
+ assert(machine == EM_PPC64);
+
+ note_head_size = sizeof(Elf64_Nhdr);
+
+ for (nf = note_func; nf->note_contents_func; nf++) {
+ elf_note_size = elf_note_size + note_head_size + name_size +
+ nf->contents_size;
+ }
+
+ return (elf_note_size) * nr_cpus;
+}
+
+static int ppc64_write_all_elf64_notes(const char *note_name,
+ WriteCoreDumpFunction f,
+ PowerPCCPU *cpu, int id,
+ void *opaque)
+{
+ NoteFuncArg arg = { .state = opaque };
+ int ret = -1;
+ int note_size;
+ const NoteFuncDesc *nf;
+
+ for (nf = note_func; nf->note_contents_func; nf++) {
+ arg.note.hdr.n_namesz = cpu_to_dump32(opaque, sizeof(arg.note.name));
+ arg.note.hdr.n_descsz = cpu_to_dump32(opaque, nf->contents_size);
+ strncpy(arg.note.name, note_name, sizeof(arg.note.name));
+
+ (*nf->note_contents_func)(&arg, cpu);
+
+ note_size =
+ sizeof(arg.note) - sizeof(arg.note.contents) + nf->contents_size;
+ ret = f(&arg.note, note_size, opaque);
+ if (ret < 0) {
+ return -1;
+ }
+ }
+ return 0;
+}
+
+int ppc64_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
+ int cpuid, void *opaque)
+{
+ PowerPCCPU *cpu = POWERPC_CPU(cs);
+ return ppc64_write_all_elf64_notes("CORE", f, cpu, cpuid, opaque);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-16 17:59:28 +0000