Initial import of qemu-2.4.1HEADmaster

1 files changed, 452 insertions, 0 deletions

diff --git a/target-i386/arch_dump.c b/target-i386/arch_dump.c
new file mode 100644
index 00000000..eccd8031
--- /dev/null
+++ b/target-i386/arch_dump.c
@@ -0,0 +1,452 @@
+/*
+ * i386 memory mapping
+ *
+ * Copyright Fujitsu, Corp. 2011, 2012
+ *
+ * Authors:
+ *     Wen Congyang <wency@cn.fujitsu.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 "cpu.h"
+#include "exec/cpu-all.h"
+#include "sysemu/dump.h"
+#include "elf.h"
+#include "sysemu/memory_mapping.h"
+
+#ifdef TARGET_X86_64
+typedef struct {
+    target_ulong r15, r14, r13, r12, rbp, rbx, r11, r10;
+    target_ulong r9, r8, rax, rcx, rdx, rsi, rdi, orig_rax;
+    target_ulong rip, cs, eflags;
+    target_ulong rsp, ss;
+    target_ulong fs_base, gs_base;
+    target_ulong ds, es, fs, gs;
+} x86_64_user_regs_struct;
+
+typedef struct {
+    char pad1[32];
+    uint32_t pid;
+    char pad2[76];
+    x86_64_user_regs_struct regs;
+    char pad3[8];
+} x86_64_elf_prstatus;
+
+static int x86_64_write_elf64_note(WriteCoreDumpFunction f,
+                                   CPUX86State *env, int id,
+                                   void *opaque)
+{
+    x86_64_user_regs_struct regs;
+    Elf64_Nhdr *note;
+    char *buf;
+    int descsz, note_size, name_size = 5;
+    const char *name = "CORE";
+    int ret;
+
+    regs.r15 = env->regs[15];
+    regs.r14 = env->regs[14];
+    regs.r13 = env->regs[13];
+    regs.r12 = env->regs[12];
+    regs.r11 = env->regs[11];
+    regs.r10 = env->regs[10];
+    regs.r9  = env->regs[9];
+    regs.r8  = env->regs[8];
+    regs.rbp = env->regs[R_EBP];
+    regs.rsp = env->regs[R_ESP];
+    regs.rdi = env->regs[R_EDI];
+    regs.rsi = env->regs[R_ESI];
+    regs.rdx = env->regs[R_EDX];
+    regs.rcx = env->regs[R_ECX];
+    regs.rbx = env->regs[R_EBX];
+    regs.rax = env->regs[R_EAX];
+    regs.rip = env->eip;
+    regs.eflags = env->eflags;
+
+    regs.orig_rax = 0; /* FIXME */
+    regs.cs = env->segs[R_CS].selector;
+    regs.ss = env->segs[R_SS].selector;
+    regs.fs_base = env->segs[R_FS].base;
+    regs.gs_base = env->segs[R_GS].base;
+    regs.ds = env->segs[R_DS].selector;
+    regs.es = env->segs[R_ES].selector;
+    regs.fs = env->segs[R_FS].selector;
+    regs.gs = env->segs[R_GS].selector;
+
+    descsz = sizeof(x86_64_elf_prstatus);
+    note_size = ((sizeof(Elf64_Nhdr) + 3) / 4 + (name_size + 3) / 4 +
+                (descsz + 3) / 4) * 4;
+    note = g_malloc0(note_size);
+    note->n_namesz = cpu_to_le32(name_size);
+    note->n_descsz = cpu_to_le32(descsz);
+    note->n_type = cpu_to_le32(NT_PRSTATUS);
+    buf = (char *)note;
+    buf += ((sizeof(Elf64_Nhdr) + 3) / 4) * 4;
+    memcpy(buf, name, name_size);
+    buf += ((name_size + 3) / 4) * 4;
+    memcpy(buf + 32, &id, 4); /* pr_pid */
+    buf += descsz - sizeof(x86_64_user_regs_struct)-sizeof(target_ulong);
+    memcpy(buf, &regs, sizeof(x86_64_user_regs_struct));
+
+    ret = f(note, note_size, opaque);
+    g_free(note);
+    if (ret < 0) {
+        return -1;
+    }
+
+    return 0;
+}
+#endif
+
+typedef struct {
+    uint32_t ebx, ecx, edx, esi, edi, ebp, eax;
+    unsigned short ds, __ds, es, __es;
+    unsigned short fs, __fs, gs, __gs;
+    uint32_t orig_eax, eip;
+    unsigned short cs, __cs;
+    uint32_t eflags, esp;
+    unsigned short ss, __ss;
+} x86_user_regs_struct;
+
+typedef struct {
+    char pad1[24];
+    uint32_t pid;
+    char pad2[44];
+    x86_user_regs_struct regs;
+    char pad3[4];
+} x86_elf_prstatus;
+
+static void x86_fill_elf_prstatus(x86_elf_prstatus *prstatus, CPUX86State *env,
+                                  int id)
+{
+    memset(prstatus, 0, sizeof(x86_elf_prstatus));
+    prstatus->regs.ebp = env->regs[R_EBP] & 0xffffffff;
+    prstatus->regs.esp = env->regs[R_ESP] & 0xffffffff;
+    prstatus->regs.edi = env->regs[R_EDI] & 0xffffffff;
+    prstatus->regs.esi = env->regs[R_ESI] & 0xffffffff;
+    prstatus->regs.edx = env->regs[R_EDX] & 0xffffffff;
+    prstatus->regs.ecx = env->regs[R_ECX] & 0xffffffff;
+    prstatus->regs.ebx = env->regs[R_EBX] & 0xffffffff;
+    prstatus->regs.eax = env->regs[R_EAX] & 0xffffffff;
+    prstatus->regs.eip = env->eip & 0xffffffff;
+    prstatus->regs.eflags = env->eflags & 0xffffffff;
+
+    prstatus->regs.cs = env->segs[R_CS].selector;
+    prstatus->regs.ss = env->segs[R_SS].selector;
+    prstatus->regs.ds = env->segs[R_DS].selector;
+    prstatus->regs.es = env->segs[R_ES].selector;
+    prstatus->regs.fs = env->segs[R_FS].selector;
+    prstatus->regs.gs = env->segs[R_GS].selector;
+
+    prstatus->pid = id;
+}
+
+static int x86_write_elf64_note(WriteCoreDumpFunction f, CPUX86State *env,
+                                int id, void *opaque)
+{
+    x86_elf_prstatus prstatus;
+    Elf64_Nhdr *note;
+    char *buf;
+    int descsz, note_size, name_size = 5;
+    const char *name = "CORE";
+    int ret;
+
+    x86_fill_elf_prstatus(&prstatus, env, id);
+    descsz = sizeof(x86_elf_prstatus);
+    note_size = ((sizeof(Elf64_Nhdr) + 3) / 4 + (name_size + 3) / 4 +
+                (descsz + 3) / 4) * 4;
+    note = g_malloc0(note_size);
+    note->n_namesz = cpu_to_le32(name_size);
+    note->n_descsz = cpu_to_le32(descsz);
+    note->n_type = cpu_to_le32(NT_PRSTATUS);
+    buf = (char *)note;
+    buf += ((sizeof(Elf64_Nhdr) + 3) / 4) * 4;
+    memcpy(buf, name, name_size);
+    buf += ((name_size + 3) / 4) * 4;
+    memcpy(buf, &prstatus, sizeof(prstatus));
+
+    ret = f(note, note_size, opaque);
+    g_free(note);
+    if (ret < 0) {
+        return -1;
+    }
+
+    return 0;
+}
+
+int x86_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
+                             int cpuid, void *opaque)
+{
+    X86CPU *cpu = X86_CPU(cs);
+    int ret;
+#ifdef TARGET_X86_64
+    X86CPU *first_x86_cpu = X86_CPU(first_cpu);
+    bool lma = !!(first_x86_cpu->env.hflags & HF_LMA_MASK);
+
+    if (lma) {
+        ret = x86_64_write_elf64_note(f, &cpu->env, cpuid, opaque);
+    } else {
+#endif
+        ret = x86_write_elf64_note(f, &cpu->env, cpuid, opaque);
+#ifdef TARGET_X86_64
+    }
+#endif
+
+    return ret;
+}
+
+int x86_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs,
+                             int cpuid, void *opaque)
+{
+    X86CPU *cpu = X86_CPU(cs);
+    x86_elf_prstatus prstatus;
+    Elf32_Nhdr *note;
+    char *buf;
+    int descsz, note_size, name_size = 5;
+    const char *name = "CORE";
+    int ret;
+
+    x86_fill_elf_prstatus(&prstatus, &cpu->env, cpuid);
+    descsz = sizeof(x86_elf_prstatus);
+    note_size = ((sizeof(Elf32_Nhdr) + 3) / 4 + (name_size + 3) / 4 +
+                (descsz + 3) / 4) * 4;
+    note = g_malloc0(note_size);
+    note->n_namesz = cpu_to_le32(name_size);
+    note->n_descsz = cpu_to_le32(descsz);
+    note->n_type = cpu_to_le32(NT_PRSTATUS);
+    buf = (char *)note;
+    buf += ((sizeof(Elf32_Nhdr) + 3) / 4) * 4;
+    memcpy(buf, name, name_size);
+    buf += ((name_size + 3) / 4) * 4;
+    memcpy(buf, &prstatus, sizeof(prstatus));
+
+    ret = f(note, note_size, opaque);
+    g_free(note);
+    if (ret < 0) {
+        return -1;
+    }
+
+    return 0;
+}
+
+/*
+ * please count up QEMUCPUSTATE_VERSION if you have changed definition of
+ * QEMUCPUState, and modify the tools using this information accordingly.
+ */
+#define QEMUCPUSTATE_VERSION (1)
+
+struct QEMUCPUSegment {
+    uint32_t selector;
+    uint32_t limit;
+    uint32_t flags;
+    uint32_t pad;
+    uint64_t base;
+};
+
+typedef struct QEMUCPUSegment QEMUCPUSegment;
+
+struct QEMUCPUState {
+    uint32_t version;
+    uint32_t size;
+    uint64_t rax, rbx, rcx, rdx, rsi, rdi, rsp, rbp;
+    uint64_t r8, r9, r10, r11, r12, r13, r14, r15;
+    uint64_t rip, rflags;
+    QEMUCPUSegment cs, ds, es, fs, gs, ss;
+    QEMUCPUSegment ldt, tr, gdt, idt;
+    uint64_t cr[5];
+};
+
+typedef struct QEMUCPUState QEMUCPUState;
+
+static void copy_segment(QEMUCPUSegment *d, SegmentCache *s)
+{
+    d->pad = 0;
+    d->selector = s->selector;
+    d->limit = s->limit;
+    d->flags = s->flags;
+    d->base = s->base;
+}
+
+static void qemu_get_cpustate(QEMUCPUState *s, CPUX86State *env)
+{
+    memset(s, 0, sizeof(QEMUCPUState));
+
+    s->version = QEMUCPUSTATE_VERSION;
+    s->size = sizeof(QEMUCPUState);
+
+    s->rax = env->regs[R_EAX];
+    s->rbx = env->regs[R_EBX];
+    s->rcx = env->regs[R_ECX];
+    s->rdx = env->regs[R_EDX];
+    s->rsi = env->regs[R_ESI];
+    s->rdi = env->regs[R_EDI];
+    s->rsp = env->regs[R_ESP];
+    s->rbp = env->regs[R_EBP];
+#ifdef TARGET_X86_64
+    s->r8  = env->regs[8];
+    s->r9  = env->regs[9];
+    s->r10 = env->regs[10];
+    s->r11 = env->regs[11];
+    s->r12 = env->regs[12];
+    s->r13 = env->regs[13];
+    s->r14 = env->regs[14];
+    s->r15 = env->regs[15];
+#endif
+    s->rip = env->eip;
+    s->rflags = env->eflags;
+
+    copy_segment(&s->cs, &env->segs[R_CS]);
+    copy_segment(&s->ds, &env->segs[R_DS]);
+    copy_segment(&s->es, &env->segs[R_ES]);
+    copy_segment(&s->fs, &env->segs[R_FS]);
+    copy_segment(&s->gs, &env->segs[R_GS]);
+    copy_segment(&s->ss, &env->segs[R_SS]);
+    copy_segment(&s->ldt, &env->ldt);
+    copy_segment(&s->tr, &env->tr);
+    copy_segment(&s->gdt, &env->gdt);
+    copy_segment(&s->idt, &env->idt);
+
+    s->cr[0] = env->cr[0];
+    s->cr[1] = env->cr[1];
+    s->cr[2] = env->cr[2];
+    s->cr[3] = env->cr[3];
+    s->cr[4] = env->cr[4];
+}
+
+static inline int cpu_write_qemu_note(WriteCoreDumpFunction f,
+                                      CPUX86State *env,
+                                      void *opaque,
+                                      int type)
+{
+    QEMUCPUState state;
+    Elf64_Nhdr *note64;
+    Elf32_Nhdr *note32;
+    void *note;
+    char *buf;
+    int descsz, note_size, name_size = 5, note_head_size;
+    const char *name = "QEMU";
+    int ret;
+
+    qemu_get_cpustate(&state, env);
+
+    descsz = sizeof(state);
+    if (type == 0) {
+        note_head_size = sizeof(Elf32_Nhdr);
+    } else {
+        note_head_size = sizeof(Elf64_Nhdr);
+    }
+    note_size = ((note_head_size + 3) / 4 + (name_size + 3) / 4 +
+                (descsz + 3) / 4) * 4;
+    note = g_malloc0(note_size);
+    if (type == 0) {
+        note32 = note;
+        note32->n_namesz = cpu_to_le32(name_size);
+        note32->n_descsz = cpu_to_le32(descsz);
+        note32->n_type = 0;
+    } else {
+        note64 = note;
+        note64->n_namesz = cpu_to_le32(name_size);
+        note64->n_descsz = cpu_to_le32(descsz);
+        note64->n_type = 0;
+    }
+    buf = note;
+    buf += ((note_head_size + 3) / 4) * 4;
+    memcpy(buf, name, name_size);
+    buf += ((name_size + 3) / 4) * 4;
+    memcpy(buf, &state, sizeof(state));
+
+    ret = f(note, note_size, opaque);
+    g_free(note);
+    if (ret < 0) {
+        return -1;
+    }
+
+    return 0;
+}
+
+int x86_cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cs,
+                                 void *opaque)
+{
+    X86CPU *cpu = X86_CPU(cs);
+
+    return cpu_write_qemu_note(f, &cpu->env, opaque, 1);
+}
+
+int x86_cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cs,
+                                 void *opaque)
+{
+    X86CPU *cpu = X86_CPU(cs);
+
+    return cpu_write_qemu_note(f, &cpu->env, opaque, 0);
+}
+
+int cpu_get_dump_info(ArchDumpInfo *info,
+                      const GuestPhysBlockList *guest_phys_blocks)
+{
+    bool lma = false;
+    GuestPhysBlock *block;
+
+#ifdef TARGET_X86_64
+    X86CPU *first_x86_cpu = X86_CPU(first_cpu);
+
+    lma = !!(first_x86_cpu->env.hflags & HF_LMA_MASK);
+#endif
+
+    if (lma) {
+        info->d_machine = EM_X86_64;
+    } else {
+        info->d_machine = EM_386;
+    }
+    info->d_endian = ELFDATA2LSB;
+
+    if (lma) {
+        info->d_class = ELFCLASS64;
+    } else {
+        info->d_class = ELFCLASS32;
+
+        QTAILQ_FOREACH(block, &guest_phys_blocks->head, next) {
+            if (block->target_end > UINT_MAX) {
+                /* The memory size is greater than 4G */
+                info->d_class = ELFCLASS64;
+                break;
+            }
+        }
+    }
+
+    return 0;
+}
+
+ssize_t cpu_get_note_size(int class, int machine, int nr_cpus)
+{
+    int name_size = 5; /* "CORE" or "QEMU" */
+    size_t elf_note_size = 0;
+    size_t qemu_note_size = 0;
+    int elf_desc_size = 0;
+    int qemu_desc_size = 0;
+    int note_head_size;
+
+    if (class == ELFCLASS32) {
+        note_head_size = sizeof(Elf32_Nhdr);
+    } else {
+        note_head_size = sizeof(Elf64_Nhdr);
+    }
+
+    if (machine == EM_386) {
+        elf_desc_size = sizeof(x86_elf_prstatus);
+    }
+#ifdef TARGET_X86_64
+    else {
+        elf_desc_size = sizeof(x86_64_elf_prstatus);
+    }
+#endif
+    qemu_desc_size = sizeof(QEMUCPUState);
+
+    elf_note_size = ((note_head_size + 3) / 4 + (name_size + 3) / 4 +
+                     (elf_desc_size + 3) / 4) * 4;
+    qemu_note_size = ((note_head_size + 3) / 4 + (name_size + 3) / 4 +
+                      (qemu_desc_size + 3) / 4) * 4;
+
+    return (elf_note_size + qemu_note_size) * nr_cpus;
+}