X-Git-Url: http://git.osdn.net/view?a=blobdiff_plain;f=dump%2Fwin_dump.c;h=b7bfaff3794c6274beab0b9b01b60da215e1457d;hb=c3461c6264a7c8ca15b117e91fe5da786924a784;hp=eda2a48974252fed14c992b6f0596da9e221e74c;hpb=e018ccb3fbfa1d446ca7b49266c8a80dce40612d;p=qmiga%2Fqemu.git

diff --git a/dump/win_dump.c b/dump/win_dump.c
index eda2a48974..b7bfaff379 100644
--- a/dump/win_dump.c
+++ b/dump/win_dump.c
@@ -1,5 +1,5 @@
 /*
- * Windows crashdump
+ * Windows crashdump (target specific implementations)
  *
  * Copyright (c) 2018 Virtuozzo International GmbH
  *
@@ -9,27 +9,48 @@
  */
 
 #include "qemu/osdep.h"
-#include "qemu-common.h"
-#include "qemu/cutils.h"
-#include "elf.h"
-#include "cpu.h"
-#include "exec/hwaddr.h"
-#include "monitor/monitor.h"
-#include "sysemu/kvm.h"
 #include "sysemu/dump.h"
-#include "sysemu/memory_mapping.h"
-#include "sysemu/cpus.h"
 #include "qapi/error.h"
-#include "qapi/qmp/qerror.h"
 #include "qemu/error-report.h"
-#include "hw/misc/vmcoreinfo.h"
+#include "qapi/qmp/qerror.h"
+#include "exec/cpu-defs.h"
+#include "hw/core/cpu.h"
+#include "qemu/win_dump_defs.h"
 #include "win_dump.h"
+#include "cpu.h"
 
-static size_t write_run(WinDumpPhyMemRun64 *run, int fd, Error **errp)
+#if defined(TARGET_X86_64)
+
+bool win_dump_available(Error **errp)
+{
+    return true;
+}
+
+static size_t win_dump_ptr_size(bool x64)
+{
+    return x64 ? sizeof(uint64_t) : sizeof(uint32_t);
+}
+
+#define _WIN_DUMP_FIELD(f) (x64 ? h->x64.f : h->x32.f)
+#define WIN_DUMP_FIELD(field) _WIN_DUMP_FIELD(field)
+
+#define _WIN_DUMP_FIELD_PTR(f) (x64 ? (void *)&h->x64.f : (void *)&h->x32.f)
+#define WIN_DUMP_FIELD_PTR(field) _WIN_DUMP_FIELD_PTR(field)
+
+#define _WIN_DUMP_FIELD_SIZE(f) (x64 ? sizeof(h->x64.f) : sizeof(h->x32.f))
+#define WIN_DUMP_FIELD_SIZE(field) _WIN_DUMP_FIELD_SIZE(field)
+
+static size_t win_dump_ctx_size(bool x64)
+{
+    return x64 ? sizeof(WinContext64) : sizeof(WinContext32);
+}
+
+static size_t write_run(uint64_t base_page, uint64_t page_count,
+        int fd, Error **errp)
 {
     void *buf;
-    uint64_t addr = run->BasePage << TARGET_PAGE_BITS;
-    uint64_t size = run->PageCount << TARGET_PAGE_BITS;
+    uint64_t addr = base_page << TARGET_PAGE_BITS;
+    uint64_t size = page_count << TARGET_PAGE_BITS;
     uint64_t len, l;
     size_t total = 0;
 
@@ -58,15 +79,16 @@ static size_t write_run(WinDumpPhyMemRun64 *run, int fd, Error **errp)
     return total;
 }
 
-static void write_runs(DumpState *s, WinDumpHeader64 *h, Error **errp)
+static void write_runs(DumpState *s, WinDumpHeader *h, bool x64, Error **errp)
 {
-    WinDumpPhyMemDesc64 *desc = &h->PhysicalMemoryBlock;
-    WinDumpPhyMemRun64 *run = desc->Run;
+    uint64_t BasePage, PageCount;
     Error *local_err = NULL;
     int i;
 
-    for (i = 0; i < desc->NumberOfRuns; i++) {
-        s->written_size += write_run(run + i, s->fd, &local_err);
+    for (i = 0; i < WIN_DUMP_FIELD(PhysicalMemoryBlock.NumberOfRuns); i++) {
+        BasePage = WIN_DUMP_FIELD(PhysicalMemoryBlock.Run[i].BasePage);
+        PageCount = WIN_DUMP_FIELD(PhysicalMemoryBlock.Run[i].PageCount);
+        s->written_size += write_run(BasePage, PageCount, s->fd, &local_err);
         if (local_err) {
             error_propagate(errp, local_err);
             return;
@@ -74,30 +96,45 @@ static void write_runs(DumpState *s, WinDumpHeader64 *h, Error **errp)
     }
 }
 
-static void patch_mm_pfn_database(WinDumpHeader64 *h, Error **errp)
+static int cpu_read_ptr(bool x64, CPUState *cpu, uint64_t addr, uint64_t *ptr)
+{
+    int ret;
+    uint32_t ptr32;
+    uint64_t ptr64;
+
+    ret = cpu_memory_rw_debug(cpu, addr, x64 ? (void *)&ptr64 : (void *)&ptr32,
+            win_dump_ptr_size(x64), 0);
+
+    *ptr = x64 ? ptr64 : ptr32;
+
+    return ret;
+}
+
+static void patch_mm_pfn_database(WinDumpHeader *h, bool x64, Error **errp)
 {
     if (cpu_memory_rw_debug(first_cpu,
-            h->KdDebuggerDataBlock + KDBG_MM_PFN_DATABASE_OFFSET64,
-            (uint8_t *)&h->PfnDatabase, sizeof(h->PfnDatabase), 0)) {
+            WIN_DUMP_FIELD(KdDebuggerDataBlock) + KDBG_MM_PFN_DATABASE_OFFSET,
+            WIN_DUMP_FIELD_PTR(PfnDatabase),
+            WIN_DUMP_FIELD_SIZE(PfnDatabase), 0)) {
         error_setg(errp, "win-dump: failed to read MmPfnDatabase");
         return;
     }
 }
 
-static void patch_bugcheck_data(WinDumpHeader64 *h, Error **errp)
+static void patch_bugcheck_data(WinDumpHeader *h, bool x64, Error **errp)
 {
     uint64_t KiBugcheckData;
 
-    if (cpu_memory_rw_debug(first_cpu,
-            h->KdDebuggerDataBlock + KDBG_KI_BUGCHECK_DATA_OFFSET64,
-            (uint8_t *)&KiBugcheckData, sizeof(KiBugcheckData), 0)) {
+    if (cpu_read_ptr(x64, first_cpu,
+            WIN_DUMP_FIELD(KdDebuggerDataBlock) + KDBG_KI_BUGCHECK_DATA_OFFSET,
+            &KiBugcheckData)) {
         error_setg(errp, "win-dump: failed to read KiBugcheckData");
         return;
     }
 
-    if (cpu_memory_rw_debug(first_cpu,
-            KiBugcheckData,
-            h->BugcheckData, sizeof(h->BugcheckData), 0)) {
+    if (cpu_memory_rw_debug(first_cpu, KiBugcheckData,
+            WIN_DUMP_FIELD(BugcheckData),
+            WIN_DUMP_FIELD_SIZE(BugcheckData), 0)) {
         error_setg(errp, "win-dump: failed to read bugcheck data");
         return;
     }
@@ -106,62 +143,72 @@ static void patch_bugcheck_data(WinDumpHeader64 *h, Error **errp)
      * If BugcheckCode wasn't saved, we consider guest OS as alive.
      */
 
-    if (!h->BugcheckCode) {
-        h->BugcheckCode = LIVE_SYSTEM_DUMP;
+    if (!WIN_DUMP_FIELD(BugcheckCode)) {
+        *(uint32_t *)WIN_DUMP_FIELD_PTR(BugcheckCode) = LIVE_SYSTEM_DUMP;
     }
 }
 
 /*
  * This routine tries to correct mistakes in crashdump header.
  */
-static void patch_header(WinDumpHeader64 *h)
+static void patch_header(WinDumpHeader *h, bool x64)
 {
     Error *local_err = NULL;
 
-    h->RequiredDumpSpace = sizeof(WinDumpHeader64) +
-            (h->PhysicalMemoryBlock.NumberOfPages << TARGET_PAGE_BITS);
-    h->PhysicalMemoryBlock.unused = 0;
-    h->unused1 = 0;
+    if (x64) {
+        h->x64.RequiredDumpSpace = sizeof(WinDumpHeader64) +
+            (h->x64.PhysicalMemoryBlock.NumberOfPages << TARGET_PAGE_BITS);
+        h->x64.PhysicalMemoryBlock.unused = 0;
+        h->x64.unused1 = 0;
+    } else {
+        h->x32.RequiredDumpSpace = sizeof(WinDumpHeader32) +
+            (h->x32.PhysicalMemoryBlock.NumberOfPages << TARGET_PAGE_BITS);
+    }
 
-    patch_mm_pfn_database(h, &local_err);
+    patch_mm_pfn_database(h, x64, &local_err);
     if (local_err) {
         warn_report_err(local_err);
         local_err = NULL;
     }
-    patch_bugcheck_data(h, &local_err);
+    patch_bugcheck_data(h, x64, &local_err);
     if (local_err) {
         warn_report_err(local_err);
     }
 }
 
-static void check_header(WinDumpHeader64 *h, Error **errp)
+static bool check_header(WinDumpHeader *h, bool *x64, Error **errp)
 {
     const char Signature[] = "PAGE";
-    const char ValidDump[] = "DU64";
 
     if (memcmp(h->Signature, Signature, sizeof(h->Signature))) {
         error_setg(errp, "win-dump: invalid header, expected '%.4s',"
                          " got '%.4s'", Signature, h->Signature);
-        return;
+        return false;
     }
 
-    if (memcmp(h->ValidDump, ValidDump, sizeof(h->ValidDump))) {
-        error_setg(errp, "win-dump: invalid header, expected '%.4s',"
-                         " got '%.4s'", ValidDump, h->ValidDump);
-        return;
+    if (!memcmp(h->ValidDump, "DUMP", sizeof(h->ValidDump))) {
+        *x64 = false;
+    } else if (!memcmp(h->ValidDump, "DU64", sizeof(h->ValidDump))) {
+        *x64 = true;
+    } else {
+        error_setg(errp, "win-dump: invalid header, expected 'DUMP' or 'DU64',"
+                   " got '%.4s'", h->ValidDump);
+        return false;
     }
+
+    return true;
 }
 
-static void check_kdbg(WinDumpHeader64 *h, Error **errp)
+static void check_kdbg(WinDumpHeader *h, bool x64, Error **errp)
 {
     const char OwnerTag[] = "KDBG";
     char read_OwnerTag[4];
-    uint64_t KdDebuggerDataBlock = h->KdDebuggerDataBlock;
+    uint64_t KdDebuggerDataBlock = WIN_DUMP_FIELD(KdDebuggerDataBlock);
     bool try_fallback = true;
 
 try_again:
     if (cpu_memory_rw_debug(first_cpu,
-            KdDebuggerDataBlock + KDBG_OWNER_TAG_OFFSET64,
+            KdDebuggerDataBlock + KDBG_OWNER_TAG_OFFSET,
             (uint8_t *)&read_OwnerTag, sizeof(read_OwnerTag), 0)) {
         error_setg(errp, "win-dump: failed to read OwnerTag");
         return;
@@ -175,7 +222,7 @@ try_again:
              * we try to use KDBG obtained by guest driver.
              */
 
-            KdDebuggerDataBlock = h->BugcheckParameter1;
+            KdDebuggerDataBlock = WIN_DUMP_FIELD(BugcheckParameter1);
             try_fallback = false;
             goto try_again;
         } else {
@@ -186,7 +233,11 @@ try_again:
         }
     }
 
-    h->KdDebuggerDataBlock = KdDebuggerDataBlock;
+    if (x64) {
+        h->x64.KdDebuggerDataBlock = KdDebuggerDataBlock;
+    } else {
+        h->x32.KdDebuggerDataBlock = KdDebuggerDataBlock;
+    }
 }
 
 struct saved_context {
@@ -194,24 +245,25 @@ struct saved_context {
     uint64_t addr;
 };
 
-static void patch_and_save_context(WinDumpHeader64 *h,
+static void patch_and_save_context(WinDumpHeader *h, bool x64,
                                    struct saved_context *saved_ctx,
                                    Error **errp)
 {
+    uint64_t KdDebuggerDataBlock = WIN_DUMP_FIELD(KdDebuggerDataBlock);
     uint64_t KiProcessorBlock;
     uint16_t OffsetPrcbContext;
     CPUState *cpu;
     int i = 0;
 
-    if (cpu_memory_rw_debug(first_cpu,
-            h->KdDebuggerDataBlock + KDBG_KI_PROCESSOR_BLOCK_OFFSET64,
-            (uint8_t *)&KiProcessorBlock, sizeof(KiProcessorBlock), 0)) {
+    if (cpu_read_ptr(x64, first_cpu,
+            KdDebuggerDataBlock + KDBG_KI_PROCESSOR_BLOCK_OFFSET,
+            &KiProcessorBlock)) {
         error_setg(errp, "win-dump: failed to read KiProcessorBlock");
         return;
     }
 
     if (cpu_memory_rw_debug(first_cpu,
-            h->KdDebuggerDataBlock + KDBG_OFFSET_PRCB_CONTEXT_OFFSET64,
+            KdDebuggerDataBlock + KDBG_OFFSET_PRCB_CONTEXT_OFFSET,
             (uint8_t *)&OffsetPrcbContext, sizeof(OffsetPrcbContext), 0)) {
         error_setg(errp, "win-dump: failed to read OffsetPrcbContext");
         return;
@@ -224,17 +276,24 @@ static void patch_and_save_context(WinDumpHeader64 *h,
         uint64_t Context;
         WinContext ctx;
 
-        if (cpu_memory_rw_debug(first_cpu,
-                KiProcessorBlock + i * sizeof(uint64_t),
-                (uint8_t *)&Prcb, sizeof(Prcb), 0)) {
+        if (i >= WIN_DUMP_FIELD(NumberProcessors)) {
+            warn_report("win-dump: number of QEMU CPUs is bigger than"
+                        " NumberProcessors (%u) in guest Windows",
+                        WIN_DUMP_FIELD(NumberProcessors));
+            return;
+        }
+
+        if (cpu_read_ptr(x64, first_cpu,
+                KiProcessorBlock + i * win_dump_ptr_size(x64),
+                &Prcb)) {
             error_setg(errp, "win-dump: failed to read"
                              " CPU #%d PRCB location", i);
             return;
         }
 
-        if (cpu_memory_rw_debug(first_cpu,
+        if (cpu_read_ptr(x64, first_cpu,
                 Prcb + OffsetPrcbContext,
-                (uint8_t *)&Context, sizeof(Context), 0)) {
+                &Context)) {
             error_setg(errp, "win-dump: failed to read"
                              " CPU #%d ContextFrame location", i);
             return;
@@ -242,56 +301,88 @@ static void patch_and_save_context(WinDumpHeader64 *h,
 
         saved_ctx[i].addr = Context;
 
-        ctx = (WinContext){
-            .ContextFlags = WIN_CTX_ALL,
-            .MxCsr = env->mxcsr,
-
-            .SegEs = env->segs[0].selector,
-            .SegCs = env->segs[1].selector,
-            .SegSs = env->segs[2].selector,
-            .SegDs = env->segs[3].selector,
-            .SegFs = env->segs[4].selector,
-            .SegGs = env->segs[5].selector,
-            .EFlags = cpu_compute_eflags(env),
-
-            .Dr0 = env->dr[0],
-            .Dr1 = env->dr[1],
-            .Dr2 = env->dr[2],
-            .Dr3 = env->dr[3],
-            .Dr6 = env->dr[6],
-            .Dr7 = env->dr[7],
-
-            .Rax = env->regs[R_EAX],
-            .Rbx = env->regs[R_EBX],
-            .Rcx = env->regs[R_ECX],
-            .Rdx = env->regs[R_EDX],
-            .Rsp = env->regs[R_ESP],
-            .Rbp = env->regs[R_EBP],
-            .Rsi = env->regs[R_ESI],
-            .Rdi = env->regs[R_EDI],
-            .R8  = env->regs[8],
-            .R9  = env->regs[9],
-            .R10 = env->regs[10],
-            .R11 = env->regs[11],
-            .R12 = env->regs[12],
-            .R13 = env->regs[13],
-            .R14 = env->regs[14],
-            .R15 = env->regs[15],
-
-            .Rip = env->eip,
-            .FltSave = {
+        if (x64) {
+            ctx.x64 = (WinContext64){
+                .ContextFlags = WIN_CTX64_ALL,
                 .MxCsr = env->mxcsr,
-            },
-        };
+
+                .SegEs = env->segs[0].selector,
+                .SegCs = env->segs[1].selector,
+                .SegSs = env->segs[2].selector,
+                .SegDs = env->segs[3].selector,
+                .SegFs = env->segs[4].selector,
+                .SegGs = env->segs[5].selector,
+                .EFlags = cpu_compute_eflags(env),
+
+                .Dr0 = env->dr[0],
+                .Dr1 = env->dr[1],
+                .Dr2 = env->dr[2],
+                .Dr3 = env->dr[3],
+                .Dr6 = env->dr[6],
+                .Dr7 = env->dr[7],
+
+                .Rax = env->regs[R_EAX],
+                .Rbx = env->regs[R_EBX],
+                .Rcx = env->regs[R_ECX],
+                .Rdx = env->regs[R_EDX],
+                .Rsp = env->regs[R_ESP],
+                .Rbp = env->regs[R_EBP],
+                .Rsi = env->regs[R_ESI],
+                .Rdi = env->regs[R_EDI],
+                .R8  = env->regs[8],
+                .R9  = env->regs[9],
+                .R10 = env->regs[10],
+                .R11 = env->regs[11],
+                .R12 = env->regs[12],
+                .R13 = env->regs[13],
+                .R14 = env->regs[14],
+                .R15 = env->regs[15],
+
+                .Rip = env->eip,
+                .FltSave = {
+                    .MxCsr = env->mxcsr,
+                },
+            };
+        } else {
+            ctx.x32 = (WinContext32){
+                .ContextFlags = WIN_CTX32_FULL | WIN_CTX_DBG,
+
+                .SegEs = env->segs[0].selector,
+                .SegCs = env->segs[1].selector,
+                .SegSs = env->segs[2].selector,
+                .SegDs = env->segs[3].selector,
+                .SegFs = env->segs[4].selector,
+                .SegGs = env->segs[5].selector,
+                .EFlags = cpu_compute_eflags(env),
+
+                .Dr0 = env->dr[0],
+                .Dr1 = env->dr[1],
+                .Dr2 = env->dr[2],
+                .Dr3 = env->dr[3],
+                .Dr6 = env->dr[6],
+                .Dr7 = env->dr[7],
+
+                .Eax = env->regs[R_EAX],
+                .Ebx = env->regs[R_EBX],
+                .Ecx = env->regs[R_ECX],
+                .Edx = env->regs[R_EDX],
+                .Esp = env->regs[R_ESP],
+                .Ebp = env->regs[R_EBP],
+                .Esi = env->regs[R_ESI],
+                .Edi = env->regs[R_EDI],
+
+                .Eip = env->eip,
+            };
+        }
 
         if (cpu_memory_rw_debug(first_cpu, Context,
-                (uint8_t *)&saved_ctx[i].ctx, sizeof(WinContext), 0)) {
+                &saved_ctx[i].ctx, win_dump_ctx_size(x64), 0)) {
             error_setg(errp, "win-dump: failed to save CPU #%d context", i);
             return;
         }
 
         if (cpu_memory_rw_debug(first_cpu, Context,
-                (uint8_t *)&ctx, sizeof(WinContext), 1)) {
+                &ctx, win_dump_ctx_size(x64), 1)) {
             error_setg(errp, "win-dump: failed to write CPU #%d context", i);
             return;
         }
@@ -300,86 +391,86 @@ static void patch_and_save_context(WinDumpHeader64 *h,
     }
 }
 
-static void restore_context(WinDumpHeader64 *h,
+static void restore_context(WinDumpHeader *h, bool x64,
                             struct saved_context *saved_ctx)
 {
     int i;
-    Error *err = NULL;
 
-    for (i = 0; i < h->NumberProcessors; i++) {
+    for (i = 0; i < WIN_DUMP_FIELD(NumberProcessors); i++) {
         if (cpu_memory_rw_debug(first_cpu, saved_ctx[i].addr,
-                (uint8_t *)&saved_ctx[i].ctx, sizeof(WinContext), 1)) {
-            error_setg(&err, "win-dump: failed to restore CPU #%d context", i);
-            warn_report_err(err);
+                &saved_ctx[i].ctx, win_dump_ctx_size(x64), 1)) {
+            warn_report("win-dump: failed to restore CPU #%d context", i);
         }
     }
 }
 
 void create_win_dump(DumpState *s, Error **errp)
 {
-    WinDumpHeader64 *h = (WinDumpHeader64 *)(s->guest_note +
-            VMCOREINFO_ELF_NOTE_HDR_SIZE);
+    WinDumpHeader *h = (void *)(s->guest_note + VMCOREINFO_ELF_NOTE_HDR_SIZE);
     X86CPU *first_x86_cpu = X86_CPU(first_cpu);
     uint64_t saved_cr3 = first_x86_cpu->env.cr[3];
     struct saved_context *saved_ctx = NULL;
     Error *local_err = NULL;
+    bool x64 = true;
+    size_t hdr_size;
 
-    if (s->guest_note_size != sizeof(WinDumpHeader64) +
-            VMCOREINFO_ELF_NOTE_HDR_SIZE) {
+    if (s->guest_note_size != VMCOREINFO_WIN_DUMP_NOTE_SIZE32 &&
+            s->guest_note_size != VMCOREINFO_WIN_DUMP_NOTE_SIZE64) {
         error_setg(errp, "win-dump: invalid vmcoreinfo note size");
         return;
     }
 
-    check_header(h, &local_err);
-    if (local_err) {
+    if (!check_header(h, &x64, &local_err)) {
         error_propagate(errp, local_err);
         return;
     }
 
+    hdr_size = x64 ? sizeof(WinDumpHeader64) : sizeof(WinDumpHeader32);
+
     /*
      * Further access to kernel structures by virtual addresses
      * should be made from system context.
      */
 
-    first_x86_cpu->env.cr[3] = h->DirectoryTableBase;
+    first_x86_cpu->env.cr[3] = WIN_DUMP_FIELD(DirectoryTableBase);
 
-    check_kdbg(h, &local_err);
+    check_kdbg(h, x64, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         goto out_cr3;
     }
 
-    patch_header(h);
+    patch_header(h, x64);
 
-    saved_ctx = g_new(struct saved_context, h->NumberProcessors);
+    saved_ctx = g_new(struct saved_context, WIN_DUMP_FIELD(NumberProcessors));
 
     /*
      * Always patch context because there is no way
      * to determine if the system-saved context is valid
      */
 
-    patch_and_save_context(h, saved_ctx, &local_err);
+    patch_and_save_context(h, x64, saved_ctx, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         goto out_free;
     }
 
-    s->total_size = h->RequiredDumpSpace;
+    s->total_size = WIN_DUMP_FIELD(RequiredDumpSpace);
 
-    s->written_size = qemu_write_full(s->fd, h, sizeof(*h));
-    if (s->written_size != sizeof(*h)) {
+    s->written_size = qemu_write_full(s->fd, h, hdr_size);
+    if (s->written_size != hdr_size) {
         error_setg(errp, QERR_IO_ERROR);
         goto out_restore;
     }
 
-    write_runs(s, h, &local_err);
+    write_runs(s, h, x64, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         goto out_restore;
     }
 
 out_restore:
-    restore_context(h, saved_ctx);
+    restore_context(h, x64, saved_ctx);
 out_free:
     g_free(saved_ctx);
 out_cr3:
@@ -387,3 +478,19 @@ out_cr3:
 
     return;
 }
+
+#else /* !TARGET_X86_64 */
+
+bool win_dump_available(Error **errp)
+{
+    error_setg(errp, "Windows dump is only available for x86-64");
+
+    return false;
+}
+
+void create_win_dump(DumpState *s, Error **errp)
+{
+    win_dump_available(errp);
+}
+
+#endif