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-rw-r--r--target/s390x/arch_dump.c249
1 files changed, 249 insertions, 0 deletions
diff --git a/target/s390x/arch_dump.c b/target/s390x/arch_dump.c
new file mode 100644
index 0000000000..4731869f6b
--- /dev/null
+++ b/target/s390x/arch_dump.c
@@ -0,0 +1,249 @@
+/*
+ * writing ELF notes for s390x arch
+ *
+ *
+ * Copyright IBM Corp. 2012, 2013
+ *
+ * Ekaterina Tumanova <tumanova@linux.vnet.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * 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 S390xUserRegsStruct {
+ uint64_t psw[2];
+ uint64_t gprs[16];
+ uint32_t acrs[16];
+} QEMU_PACKED;
+
+typedef struct S390xUserRegsStruct S390xUserRegs;
+
+struct S390xElfPrstatusStruct {
+ uint8_t pad1[32];
+ uint32_t pid;
+ uint8_t pad2[76];
+ S390xUserRegs regs;
+ uint8_t pad3[16];
+} QEMU_PACKED;
+
+typedef struct S390xElfPrstatusStruct S390xElfPrstatus;
+
+struct S390xElfFpregsetStruct {
+ uint32_t fpc;
+ uint32_t pad;
+ uint64_t fprs[16];
+} QEMU_PACKED;
+
+typedef struct S390xElfFpregsetStruct S390xElfFpregset;
+
+struct S390xElfVregsLoStruct {
+ uint64_t vregs[16];
+} QEMU_PACKED;
+
+typedef struct S390xElfVregsLoStruct S390xElfVregsLo;
+
+struct S390xElfVregsHiStruct {
+ uint64_t vregs[16][2];
+} QEMU_PACKED;
+
+typedef struct S390xElfVregsHiStruct S390xElfVregsHi;
+
+typedef struct noteStruct {
+ Elf64_Nhdr hdr;
+ char name[5];
+ char pad3[3];
+ union {
+ S390xElfPrstatus prstatus;
+ S390xElfFpregset fpregset;
+ S390xElfVregsLo vregslo;
+ S390xElfVregsHi vregshi;
+ uint32_t prefix;
+ uint64_t timer;
+ uint64_t todcmp;
+ uint32_t todpreg;
+ uint64_t ctrs[16];
+ } contents;
+} QEMU_PACKED Note;
+
+static void s390x_write_elf64_prstatus(Note *note, S390CPU *cpu)
+{
+ int i;
+ S390xUserRegs *regs;
+
+ note->hdr.n_type = cpu_to_be32(NT_PRSTATUS);
+
+ regs = &(note->contents.prstatus.regs);
+ regs->psw[0] = cpu_to_be64(cpu->env.psw.mask);
+ regs->psw[1] = cpu_to_be64(cpu->env.psw.addr);
+ for (i = 0; i <= 15; i++) {
+ regs->acrs[i] = cpu_to_be32(cpu->env.aregs[i]);
+ regs->gprs[i] = cpu_to_be64(cpu->env.regs[i]);
+ }
+}
+
+static void s390x_write_elf64_fpregset(Note *note, S390CPU *cpu)
+{
+ int i;
+ CPUS390XState *cs = &cpu->env;
+
+ note->hdr.n_type = cpu_to_be32(NT_FPREGSET);
+ note->contents.fpregset.fpc = cpu_to_be32(cpu->env.fpc);
+ for (i = 0; i <= 15; i++) {
+ note->contents.fpregset.fprs[i] = cpu_to_be64(get_freg(cs, i)->ll);
+ }
+}
+
+static void s390x_write_elf64_vregslo(Note *note, S390CPU *cpu)
+{
+ int i;
+
+ note->hdr.n_type = cpu_to_be32(NT_S390_VXRS_LOW);
+ for (i = 0; i <= 15; i++) {
+ note->contents.vregslo.vregs[i] = cpu_to_be64(cpu->env.vregs[i][1].ll);
+ }
+}
+
+static void s390x_write_elf64_vregshi(Note *note, S390CPU *cpu)
+{
+ int i;
+ S390xElfVregsHi *temp_vregshi;
+
+ temp_vregshi = &note->contents.vregshi;
+
+ note->hdr.n_type = cpu_to_be32(NT_S390_VXRS_HIGH);
+ for (i = 0; i <= 15; i++) {
+ temp_vregshi->vregs[i][0] = cpu_to_be64(cpu->env.vregs[i + 16][0].ll);
+ temp_vregshi->vregs[i][1] = cpu_to_be64(cpu->env.vregs[i + 16][1].ll);
+ }
+}
+
+static void s390x_write_elf64_timer(Note *note, S390CPU *cpu)
+{
+ note->hdr.n_type = cpu_to_be32(NT_S390_TIMER);
+ note->contents.timer = cpu_to_be64((uint64_t)(cpu->env.cputm));
+}
+
+static void s390x_write_elf64_todcmp(Note *note, S390CPU *cpu)
+{
+ note->hdr.n_type = cpu_to_be32(NT_S390_TODCMP);
+ note->contents.todcmp = cpu_to_be64((uint64_t)(cpu->env.ckc));
+}
+
+static void s390x_write_elf64_todpreg(Note *note, S390CPU *cpu)
+{
+ note->hdr.n_type = cpu_to_be32(NT_S390_TODPREG);
+ note->contents.todpreg = cpu_to_be32((uint32_t)(cpu->env.todpr));
+}
+
+static void s390x_write_elf64_ctrs(Note *note, S390CPU *cpu)
+{
+ int i;
+
+ note->hdr.n_type = cpu_to_be32(NT_S390_CTRS);
+
+ for (i = 0; i <= 15; i++) {
+ note->contents.ctrs[i] = cpu_to_be64(cpu->env.cregs[i]);
+ }
+}
+
+static void s390x_write_elf64_prefix(Note *note, S390CPU *cpu)
+{
+ note->hdr.n_type = cpu_to_be32(NT_S390_PREFIX);
+ note->contents.prefix = cpu_to_be32((uint32_t)(cpu->env.psa));
+}
+
+
+static const struct NoteFuncDescStruct {
+ int contents_size;
+ void (*note_contents_func)(Note *note, S390CPU *cpu);
+} note_func[] = {
+ {sizeof(((Note *)0)->contents.prstatus), s390x_write_elf64_prstatus},
+ {sizeof(((Note *)0)->contents.prefix), s390x_write_elf64_prefix},
+ {sizeof(((Note *)0)->contents.fpregset), s390x_write_elf64_fpregset},
+ {sizeof(((Note *)0)->contents.ctrs), s390x_write_elf64_ctrs},
+ {sizeof(((Note *)0)->contents.timer), s390x_write_elf64_timer},
+ {sizeof(((Note *)0)->contents.todcmp), s390x_write_elf64_todcmp},
+ {sizeof(((Note *)0)->contents.todpreg), s390x_write_elf64_todpreg},
+ {sizeof(((Note *)0)->contents.vregslo), s390x_write_elf64_vregslo},
+ {sizeof(((Note *)0)->contents.vregshi), s390x_write_elf64_vregshi},
+ { 0, NULL}
+};
+
+typedef struct NoteFuncDescStruct NoteFuncDesc;
+
+
+static int s390x_write_all_elf64_notes(const char *note_name,
+ WriteCoreDumpFunction f,
+ S390CPU *cpu, int id,
+ void *opaque)
+{
+ Note note;
+ const NoteFuncDesc *nf;
+ int note_size;
+ int ret = -1;
+
+ for (nf = note_func; nf->note_contents_func; nf++) {
+ memset(&note, 0, sizeof(note));
+ note.hdr.n_namesz = cpu_to_be32(sizeof(note.name));
+ note.hdr.n_descsz = cpu_to_be32(nf->contents_size);
+ strncpy(note.name, note_name, sizeof(note.name));
+ (*nf->note_contents_func)(&note, cpu);
+
+ note_size = sizeof(note) - sizeof(note.contents) + nf->contents_size;
+ ret = f(&note, note_size, opaque);
+
+ if (ret < 0) {
+ return -1;
+ }
+
+ }
+
+ return 0;
+}
+
+
+int s390_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
+ int cpuid, void *opaque)
+{
+ S390CPU *cpu = S390_CPU(cs);
+ return s390x_write_all_elf64_notes("CORE", f, cpu, cpuid, opaque);
+}
+
+int cpu_get_dump_info(ArchDumpInfo *info,
+ const struct GuestPhysBlockList *guest_phys_blocks)
+{
+ info->d_machine = EM_S390;
+ info->d_endian = ELFDATA2MSB;
+ info->d_class = ELFCLASS64;
+
+ 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;
+
+ assert(class == ELFCLASS64);
+ assert(machine == EM_S390);
+
+ 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;
+}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-03 09:20:18 +0000