2009-04-01 21:00:59 +01:00
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/**************************************************************************
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*
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* Copyright 2009 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* @file
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* Symbol lookup.
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*
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* @author Jose Fonseca <jfonseca@vmware.com>
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*/
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#include "pipe/p_compiler.h"
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2010-08-18 15:38:17 +01:00
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#include "os/os_thread.h"
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2010-08-17 23:38:19 +01:00
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#include "u_string.h"
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2009-04-01 21:00:59 +01:00
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#include "u_debug.h"
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#include "u_debug_symbol.h"
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2010-08-18 15:38:17 +01:00
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#include "u_hash_table.h"
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2009-04-01 21:00:59 +01:00
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2011-02-17 15:26:15 +00:00
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#if defined(PIPE_OS_WINDOWS) && defined(PIPE_ARCH_X86)
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2009-04-01 21:00:59 +01:00
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#include <windows.h>
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#include <stddef.h>
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2011-02-17 15:26:15 +00:00
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#include "dbghelp.h"
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2009-04-01 21:00:59 +01:00
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static BOOL bSymInitialized = FALSE;
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2011-02-17 15:26:15 +00:00
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static HMODULE hModule_Dbghelp = NULL;
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static
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FARPROC WINAPI __GetProcAddress(LPCSTR lpProcName)
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{
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#ifdef PIPE_CC_GCC
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if (!hModule_Dbghelp) {
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/*
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* bfdhelp.dll is a dbghelp.dll look-alike replacement, which is able to
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* understand MinGW symbols using BFD library. It is available from
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* http://people.freedesktop.org/~jrfonseca/bfdhelp/ for now.
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*/
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hModule_Dbghelp = LoadLibraryA("bfdhelp.dll");
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}
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#endif
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if (!hModule_Dbghelp) {
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hModule_Dbghelp = LoadLibraryA("dbghelp.dll");
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if (!hModule_Dbghelp) {
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return NULL;
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}
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}
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return GetProcAddress(hModule_Dbghelp, lpProcName);
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}
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2009-04-01 21:00:59 +01:00
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typedef BOOL (WINAPI *PFNSYMINITIALIZE)(HANDLE, LPSTR, BOOL);
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static PFNSYMINITIALIZE pfnSymInitialize = NULL;
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static
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BOOL WINAPI j_SymInitialize(HANDLE hProcess, PSTR UserSearchPath, BOOL fInvadeProcess)
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{
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if(
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2011-02-17 15:26:15 +00:00
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(pfnSymInitialize || (pfnSymInitialize = (PFNSYMINITIALIZE) __GetProcAddress("SymInitialize")))
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2009-04-01 21:00:59 +01:00
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)
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return pfnSymInitialize(hProcess, UserSearchPath, fInvadeProcess);
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else
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return FALSE;
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}
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typedef DWORD (WINAPI *PFNSYMSETOPTIONS)(DWORD);
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static PFNSYMSETOPTIONS pfnSymSetOptions = NULL;
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static
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DWORD WINAPI j_SymSetOptions(DWORD SymOptions)
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{
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if(
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2011-02-17 15:26:15 +00:00
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(pfnSymSetOptions || (pfnSymSetOptions = (PFNSYMSETOPTIONS) __GetProcAddress("SymSetOptions")))
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2009-04-01 21:00:59 +01:00
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)
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return pfnSymSetOptions(SymOptions);
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else
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return FALSE;
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}
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2011-02-17 15:26:15 +00:00
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typedef BOOL (WINAPI *PFNSYMGETSYMFROMADDR)(HANDLE, DWORD64, PDWORD64, PSYMBOL_INFO);
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static PFNSYMGETSYMFROMADDR pfnSymFromAddr = NULL;
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2009-04-01 21:00:59 +01:00
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static
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2011-02-17 15:26:15 +00:00
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BOOL WINAPI j_SymFromAddr(HANDLE hProcess, DWORD64 Address, PDWORD64 Displacement, PSYMBOL_INFO Symbol)
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2009-04-01 21:00:59 +01:00
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{
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if(
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2011-02-17 15:26:15 +00:00
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(pfnSymFromAddr || (pfnSymFromAddr = (PFNSYMGETSYMFROMADDR) __GetProcAddress("SymFromAddr")))
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2009-04-01 21:00:59 +01:00
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)
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2011-02-17 15:26:15 +00:00
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return pfnSymFromAddr(hProcess, Address, Displacement, Symbol);
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2009-04-01 21:00:59 +01:00
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else
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return FALSE;
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}
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2010-08-17 23:38:19 +01:00
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static INLINE void
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2011-02-17 15:26:15 +00:00
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debug_symbol_name_dbghelp(const void *addr, char* buf, unsigned size)
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2009-04-01 21:00:59 +01:00
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{
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HANDLE hProcess;
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BYTE symbolBuffer[1024];
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2011-02-17 15:26:15 +00:00
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PSYMBOL_INFO pSymbol = (PSYMBOL_INFO) symbolBuffer;
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DWORD64 dwDisplacement = 0; /* Displacement of the input address, relative to the start of the symbol */
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2009-04-01 21:00:59 +01:00
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hProcess = GetCurrentProcess();
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2011-02-17 15:26:15 +00:00
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memset(pSymbol, 0, sizeof *pSymbol);
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2009-04-01 21:00:59 +01:00
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pSymbol->SizeOfStruct = sizeof(symbolBuffer);
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2011-02-17 15:26:15 +00:00
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pSymbol->MaxNameLen = sizeof(symbolBuffer) - offsetof(SYMBOL_INFO, Name);
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2009-04-01 21:00:59 +01:00
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if(!bSymInitialized) {
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j_SymSetOptions(/* SYMOPT_UNDNAME | */ SYMOPT_LOAD_LINES);
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if(j_SymInitialize(hProcess, NULL, TRUE))
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bSymInitialized = TRUE;
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}
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2011-02-17 15:26:15 +00:00
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if(!j_SymFromAddr(hProcess, (DWORD64)(uintptr_t)addr, &dwDisplacement, pSymbol))
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2010-08-17 23:38:19 +01:00
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buf[0] = 0;
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else
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{
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strncpy(buf, pSymbol->Name, size);
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buf[size - 1] = 0;
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}
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2009-04-01 21:00:59 +01:00
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}
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#endif
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2013-05-28 23:58:10 +01:00
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#if defined(__GLIBC__) && !defined(__UCLIBC__)
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2010-08-17 23:39:49 +01:00
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#include <execinfo.h>
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/* This can only provide dynamic symbols, or binary offsets into a file.
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*
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* To fix this, post-process the output with tools/addr2line.sh
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*/
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static INLINE void
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debug_symbol_name_glibc(const void *addr, char* buf, unsigned size)
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{
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char** syms = backtrace_symbols((void**)&addr, 1);
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strncpy(buf, syms[0], size);
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buf[size - 1] = 0;
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free(syms);
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}
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#endif
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2009-04-01 21:00:59 +01:00
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void
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2010-08-17 23:38:19 +01:00
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debug_symbol_name(const void *addr, char* buf, unsigned size)
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2009-04-01 21:00:59 +01:00
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{
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2011-02-17 15:26:15 +00:00
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#if defined(PIPE_OS_WINDOWS) && defined(PIPE_ARCH_X86)
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debug_symbol_name_dbghelp(addr, buf, size);
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2010-08-17 23:38:19 +01:00
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if(buf[0])
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2009-04-01 21:00:59 +01:00
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return;
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#endif
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2010-08-17 23:38:19 +01:00
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2013-05-28 23:58:10 +01:00
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#if defined(__GLIBC__) && !defined(__UCLIBC__)
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2010-08-17 23:39:49 +01:00
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debug_symbol_name_glibc(addr, buf, size);
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if(buf[0])
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return;
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#endif
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2010-08-17 23:38:19 +01:00
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util_snprintf(buf, size, "%p", addr);
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buf[size - 1] = 0;
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}
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void
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debug_symbol_print(const void *addr)
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{
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char buf[1024];
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debug_symbol_name(addr, buf, sizeof(buf));
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debug_printf("\t%s\n", buf);
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2009-04-01 21:00:59 +01:00
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}
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2010-08-18 15:38:17 +01:00
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struct util_hash_table* symbols_hash;
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2011-02-17 11:18:02 +00:00
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pipe_static_mutex(symbols_mutex);
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2010-08-18 15:38:17 +01:00
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static unsigned hash_ptr(void* p)
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{
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return (unsigned)(uintptr_t)p;
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}
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static int compare_ptr(void* a, void* b)
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{
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if(a == b)
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return 0;
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else if(a < b)
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return -1;
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else
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return 1;
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}
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const char*
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debug_symbol_name_cached(const void *addr)
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{
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const char* name;
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2011-02-17 11:18:02 +00:00
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#ifdef PIPE_SUBSYSTEM_WINDOWS_USER
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static boolean first = TRUE;
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if (first) {
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pipe_mutex_init(symbols_mutex);
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first = FALSE;
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}
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#endif
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2010-08-18 15:38:17 +01:00
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pipe_mutex_lock(symbols_mutex);
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if(!symbols_hash)
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symbols_hash = util_hash_table_create(hash_ptr, compare_ptr);
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name = util_hash_table_get(symbols_hash, (void*)addr);
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if(!name)
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{
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char buf[1024];
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debug_symbol_name(addr, buf, sizeof(buf));
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name = strdup(buf);
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util_hash_table_set(symbols_hash, (void*)addr, (void*)name);
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}
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pipe_mutex_unlock(symbols_mutex);
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return name;
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}
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