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+/* Copyright (c) 2008, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * ---
+ * Author: David Vitek
+ *
+ * Dump function addresses using Microsoft debug symbols. This works
+ * on PDB files. Note that this program will download symbols to
+ * c:\websymbols without asking.
+ */
+
+#define WIN32_LEAN_AND_MEAN
+#define _CRT_SECURE_NO_WARNINGS
+#define _CRT_SECURE_NO_DEPRECATE
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h> // for _strdup
+
+#include <windows.h>
+#include <dbghelp.h>
+
+// Unfortunately, there is no versioning info in dbghelp.h so I can
+// tell whether it has an old-style (circa VC7.1) IMAGEHLP_MODULE64
+// struct, with only a few fields, or a new-style (circa VC8)
+// IMAGEHLP_MODULE64, with lots of fields. These fields are just used
+// for debugging, so it's fine to just assume the smaller struct, but
+// for most people, using a modern MSVC, the full struct is available.
+// If you are one of those people and would like this extra debugging
+// info, you can uncomment the line below.
+//#define VC8_OR_ABOVE
+
+#define SEARCH_CAP (1024*1024)
+#define WEBSYM "SRV*c:\\websymbols*http://msdl.microsoft.com/download/symbols"
+
+typedef struct {
+ char *name;
+ ULONG64 addr;
+ ULONG flags;
+} SYM;
+
+typedef struct {
+ ULONG64 module_base;
+ SYM *syms;
+ DWORD syms_len;
+ DWORD syms_cap;
+} SYM_CONTEXT;
+
+static int sym_cmp(const void *_s1, const void *_s2) {
+ const SYM *s1 = (const SYM *)_s1;
+ const SYM *s2 = (const SYM *)_s2;
+
+ if (s1->addr < s2->addr)
+ return -1;
+ if (s1->addr > s2->addr)
+ return 1;
+ return 0;
+}
+
+static BOOL CALLBACK EnumSymProc(PSYMBOL_INFO symbol_info,
+ ULONG symbol_size,
+ PVOID user_context) {
+ SYM_CONTEXT *ctx = (SYM_CONTEXT*)user_context;
+ if (symbol_info->Address < ctx->module_base ||
+ (symbol_info->Flags & SYMFLAG_TLSREL)) {
+ return TRUE;
+ }
+ if (ctx->syms_len == ctx->syms_cap) {
+ if (!ctx->syms_cap)
+ ctx->syms_cap++;
+ ctx->syms_cap *= 2;
+ ctx->syms = realloc(ctx->syms, sizeof(ctx->syms[0]) * ctx->syms_cap);
+ }
+ ctx->syms[ctx->syms_len].name = _strdup(symbol_info->Name);
+ ctx->syms[ctx->syms_len].addr = symbol_info->Address;
+ ctx->syms[ctx->syms_len].flags = symbol_info->Flags;
+ ctx->syms_len++;
+ return TRUE;
+}
+
+static void MaybePrint(const char* var, const char* description) {
+ if (var[0])
+ printf("%s: %s\n", description, var);
+}
+
+static void PrintAvailability(BOOL var, const char *description) {
+ printf("s: %s\n", description, (var ? "Available" : "Not available"));
+}
+
+static void ShowSymbolInfo(HANDLE process, ULONG64 module_base) {
+ /* Get module information. */
+ IMAGEHLP_MODULE64 module_info;
+ BOOL getmoduleinfo_rv;
+ printf("Load Address: %I64x\n", module_base);
+ memset(&module_info, 0, sizeof(module_info));
+ module_info.SizeOfStruct = sizeof(module_info);
+ getmoduleinfo_rv = SymGetModuleInfo64(process, module_base, &module_info);
+ if (!getmoduleinfo_rv) {
+ printf("Error: SymGetModuleInfo64() failed. Error code: %u\n",
+ GetLastError());
+ return;
+ }
+ /* Display information about symbols, based on kind of symbol. */
+ switch (module_info.SymType) {
+ case SymNone:
+ printf(("No symbols available for the module.\n"));
+ break;
+ case SymExport:
+ printf(("Loaded symbols: Exports\n"));
+ break;
+ case SymCoff:
+ printf(("Loaded symbols: COFF\n"));
+ break;
+ case SymCv:
+ printf(("Loaded symbols: CodeView\n"));
+ break;
+ case SymSym:
+ printf(("Loaded symbols: SYM\n"));
+ break;
+ case SymVirtual:
+ printf(("Loaded symbols: Virtual\n"));
+ break;
+ case SymPdb:
+ printf(("Loaded symbols: PDB\n"));
+ break;
+ case SymDia:
+ printf(("Loaded symbols: DIA\n"));
+ break;
+ case SymDeferred:
+ printf(("Loaded symbols: Deferred\n")); /* not actually loaded */
+ break;
+ default:
+ printf(("Loaded symbols: Unknown format.\n"));
+ break;
+ }
+
+ MaybePrint("Image name", module_info.ImageName);
+ MaybePrint("Loaded image name", module_info.LoadedImageName);
+#ifdef VC8_OR_ABOVE /* TODO(csilvers): figure out how to tell */
+ MaybePrint("PDB file name", module_info.LoadedPdbName);
+ if (module_info.PdbUnmatched || module_info.DbgUnmatched) {
+ /* This can only happen if the debug information is contained in a
+ * separate file (.DBG or .PDB)
+ */
+ printf(("Warning: Unmatched symbols.\n"));
+ }
+#endif
+
+ /* Contents */
+#ifdef VC8_OR_ABOVE /* TODO(csilvers): figure out how to tell */
+ PrintAvailability("Line numbers", module_info.LineNumbers);
+ PrintAvailability("Global symbols", module_info.GlobalSymbols);
+ PrintAvailability("Type information", module_info.TypeInfo);
+#endif
+}
+
+int main(int argc, char *argv[]) {
+ DWORD error;
+ HANDLE process;
+ ULONG64 module_base;
+ SYM_CONTEXT ctx;
+ int i;
+ char* search;
+ char* filename = NULL;
+ int rv = 0;
+ /* We may add SYMOPT_UNDNAME if --demangle is specified: */
+ DWORD symopts = SYMOPT_DEFERRED_LOADS | SYMOPT_DEBUG;
+
+ for (i = 1; i < argc; i++) {
+ if (strcmp(argv[i], "--demangle") == 0 || strcmp(argv[i], "-C") == 0) {
+ symopts |= SYMOPT_UNDNAME;
+ } else {
+ break;
+ }
+ }
+ if (i != argc - 1) {
+ fprintf(stderr, "usage: nm-pdb [-C|--demangle] <module or filename>\n");
+ exit(1);
+ }
+ filename = argv[i];
+
+ process = GetCurrentProcess();
+
+ if (!SymInitialize(process, NULL, FALSE)) {
+ error = GetLastError();
+ fprintf(stderr, "SymInitialize returned error : %d\n", error);
+ return 1;
+ }
+
+ search = malloc(SEARCH_CAP);
+ if (SymGetSearchPath(process, search, SEARCH_CAP)) {
+ if (strlen(search) + sizeof(";" WEBSYM) > SEARCH_CAP) {
+ fprintf(stderr, "Search path too long\n");
+ SymCleanup(process);
+ return 1;
+ }
+ strcat(search, ";" WEBSYM);
+ } else {
+ error = GetLastError();
+ fprintf(stderr, "SymGetSearchPath returned error : %d\n", error);
+ rv = 1; /* An error, but not a fatal one */
+ strcpy(search, WEBSYM); /* Use a default value */
+ }
+ if (!SymSetSearchPath(process, search)) {
+ error = GetLastError();
+ fprintf(stderr, "SymSetSearchPath returned error : %d\n", error);
+ rv = 1; /* An error, but not a fatal one */
+ }
+
+ SymSetOptions(symopts);
+ module_base = SymLoadModuleEx(process, NULL, filename, NULL, 0, 0, NULL, 0);
+ if (!module_base) {
+ /* SymLoadModuleEx failed */
+ error = GetLastError();
+ fprintf(stderr, "SymLoadModuleEx returned error : %d for %s\n",
+ error, filename);
+ SymCleanup(process);
+ return 1;
+ }
+
+ ShowSymbolInfo(process, module_base);
+
+ memset(&ctx, 0, sizeof(ctx));
+ ctx.module_base = module_base;
+ if (!SymEnumSymbols(process, module_base, NULL, EnumSymProc, &ctx)) {
+ error = GetLastError();
+ fprintf(stderr, "SymEnumSymbols returned error: %d\n", error);
+ rv = 1;
+ } else {
+ DWORD j;
+ qsort(ctx.syms, ctx.syms_len, sizeof(ctx.syms[0]), sym_cmp);
+ for (j = 0; j < ctx.syms_len; j++) {
+ printf("%016I64x X %s\n", ctx.syms[j].addr, ctx.syms[j].name);
+ }
+ /* In a perfect world, maybe we'd clean up ctx's memory? */
+ }
+ SymUnloadModule64(process, module_base);
+ SymCleanup(process);
+ return rv;
+}
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