1 files changed, 243 insertions, 0 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_debug_symbol.c b/mesalib/src/gallium/auxiliary/util/u_debug_symbol.c
new file mode 100644
index 000000000..b2f762c66
--- /dev/null
+++ b/mesalib/src/gallium/auxiliary/util/u_debug_symbol.c
@@ -0,0 +1,243 @@
+/**************************************************************************
+ * 
+ * Copyright 2009 VMware, Inc.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+/**
+ * @file
+ * Symbol lookup.
+ * 
+ * @author Jose Fonseca <jfonseca@vmware.com>
+ */
+
+#include "pipe/p_compiler.h"
+#include "os/os_thread.h"
+#include "u_string.h"
+
+#include "u_debug.h"
+#include "u_debug_symbol.h"
+#include "u_hash_table.h"
+
+#if defined(PIPE_OS_WINDOWS) && defined(PIPE_ARCH_X86)
+   
+#include <windows.h>
+#include <stddef.h>
+
+#include "dbghelp.h"
+
+
+static BOOL bSymInitialized = FALSE;
+
+static HMODULE hModule_Dbghelp = NULL;
+
+
+static
+FARPROC WINAPI __GetProcAddress(LPCSTR lpProcName)
+{
+#ifdef PIPE_CC_GCC
+   if (!hModule_Dbghelp) {
+      /*
+       * bfdhelp.dll is a dbghelp.dll look-alike replacement, which is able to
+       * understand MinGW symbols using BFD library.  It is available from
+       * http://people.freedesktop.org/~jrfonseca/bfdhelp/ for now.
+       */
+      hModule_Dbghelp = LoadLibraryA("bfdhelp.dll");
+   }
+#endif
+
+   if (!hModule_Dbghelp) {
+      hModule_Dbghelp = LoadLibraryA("dbghelp.dll");
+      if (!hModule_Dbghelp) {
+         return NULL;
+      }
+   }
+
+   return GetProcAddress(hModule_Dbghelp, lpProcName);
+}
+
+
+typedef BOOL (WINAPI *PFNSYMINITIALIZE)(HANDLE, LPSTR, BOOL);
+static PFNSYMINITIALIZE pfnSymInitialize = NULL;
+
+static
+BOOL WINAPI j_SymInitialize(HANDLE hProcess, PSTR UserSearchPath, BOOL fInvadeProcess)
+{
+   if(
+      (pfnSymInitialize || (pfnSymInitialize = (PFNSYMINITIALIZE) __GetProcAddress("SymInitialize")))
+   )
+      return pfnSymInitialize(hProcess, UserSearchPath, fInvadeProcess);
+   else
+      return FALSE;
+}
+
+typedef DWORD (WINAPI *PFNSYMSETOPTIONS)(DWORD);
+static PFNSYMSETOPTIONS pfnSymSetOptions = NULL;
+
+static
+DWORD WINAPI j_SymSetOptions(DWORD SymOptions)
+{
+   if(
+      (pfnSymSetOptions || (pfnSymSetOptions = (PFNSYMSETOPTIONS) __GetProcAddress("SymSetOptions")))
+   )
+      return pfnSymSetOptions(SymOptions);
+   else
+      return FALSE;
+}
+
+typedef BOOL (WINAPI *PFNSYMGETSYMFROMADDR)(HANDLE, DWORD64, PDWORD64, PSYMBOL_INFO);
+static PFNSYMGETSYMFROMADDR pfnSymFromAddr = NULL;
+
+static
+BOOL WINAPI j_SymFromAddr(HANDLE hProcess, DWORD64 Address, PDWORD64 Displacement, PSYMBOL_INFO Symbol)
+{
+   if(
+      (pfnSymFromAddr || (pfnSymFromAddr = (PFNSYMGETSYMFROMADDR) __GetProcAddress("SymFromAddr")))
+   )
+      return pfnSymFromAddr(hProcess, Address, Displacement, Symbol);
+   else
+      return FALSE;
+}
+
+
+static INLINE void
+debug_symbol_name_dbghelp(const void *addr, char* buf, unsigned size)
+{
+   HANDLE hProcess;
+   BYTE symbolBuffer[1024];
+   PSYMBOL_INFO pSymbol = (PSYMBOL_INFO) symbolBuffer;
+   DWORD64 dwDisplacement = 0;  /* Displacement of the input address, relative to the start of the symbol */
+
+   hProcess = GetCurrentProcess();
+
+   memset(pSymbol, 0, sizeof *pSymbol);
+   pSymbol->SizeOfStruct = sizeof(symbolBuffer);
+   pSymbol->MaxNameLen = sizeof(symbolBuffer) - offsetof(SYMBOL_INFO, Name);
+
+   if(!bSymInitialized) {
+      j_SymSetOptions(/* SYMOPT_UNDNAME | */ SYMOPT_LOAD_LINES);
+      if(j_SymInitialize(hProcess, NULL, TRUE))
+         bSymInitialized = TRUE;
+   }
+
+   if(!j_SymFromAddr(hProcess, (DWORD64)(uintptr_t)addr, &dwDisplacement, pSymbol))
+      buf[0] = 0;
+   else
+   {
+      strncpy(buf, pSymbol->Name, size);
+      buf[size - 1] = 0;
+   }
+}
+#endif
+
+#ifdef __GLIBC__
+#include <execinfo.h>
+
+/* This can only provide dynamic symbols, or binary offsets into a file.
+ *
+ * To fix this, post-process the output with tools/addr2line.sh
+ */
+static INLINE void
+debug_symbol_name_glibc(const void *addr, char* buf, unsigned size)
+{
+   char** syms = backtrace_symbols((void**)&addr, 1);
+   strncpy(buf, syms[0], size);
+   buf[size - 1] = 0;
+   free(syms);
+}
+#endif
+
+void
+debug_symbol_name(const void *addr, char* buf, unsigned size)
+{
+#if defined(PIPE_OS_WINDOWS) && defined(PIPE_ARCH_X86)
+   debug_symbol_name_dbghelp(addr, buf, size);
+   if(buf[0])
+      return;
+#endif
+
+#ifdef __GLIBC__
+   debug_symbol_name_glibc(addr, buf, size);
+   if(buf[0])
+      return;
+#endif
+
+   util_snprintf(buf, size, "%p", addr);
+   buf[size - 1] = 0;
+}
+
+void
+debug_symbol_print(const void *addr)
+{
+   char buf[1024];
+   debug_symbol_name(addr, buf, sizeof(buf));
+   debug_printf("\t%s\n", buf);
+}
+
+struct util_hash_table* symbols_hash;
+pipe_static_mutex(symbols_mutex);
+
+static unsigned hash_ptr(void* p)
+{
+   return (unsigned)(uintptr_t)p;
+}
+
+static int compare_ptr(void* a, void* b)
+{
+   if(a == b)
+      return 0;
+   else if(a < b)
+      return -1;
+   else
+      return 1;
+}
+
+const char*
+debug_symbol_name_cached(const void *addr)
+{
+   const char* name;
+#ifdef PIPE_SUBSYSTEM_WINDOWS_USER
+   static boolean first = TRUE;
+
+   if (first) {
+      pipe_mutex_init(symbols_mutex);
+      first = FALSE;
+   }
+#endif
+
+   pipe_mutex_lock(symbols_mutex);
+   if(!symbols_hash)
+      symbols_hash = util_hash_table_create(hash_ptr, compare_ptr);
+   name = util_hash_table_get(symbols_hash, (void*)addr);
+   if(!name)
+   {
+      char buf[1024];
+      debug_symbol_name(addr, buf, sizeof(buf));
+      name = strdup(buf);
+
+      util_hash_table_set(symbols_hash, (void*)addr, (void*)name);
+   }
+   pipe_mutex_unlock(symbols_mutex);
+   return name;
+}