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Reid Spencerebf8d0e2004-12-24 06:03:31 +00001//===- Win32/DynamicLibrary.cpp - Win32 DL Implementation -------*- C++ -*-===//
2//
3// The LLVM Compiler Infrastructure
4//
Chris Lattner4ee451d2007-12-29 20:36:04 +00005// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
Reid Spencerebf8d0e2004-12-24 06:03:31 +00007//
8//===----------------------------------------------------------------------===//
9//
Jeff Cohenc2b91622004-12-25 04:50:17 +000010// This file provides the Win32 specific implementation of DynamicLibrary.
Reid Spencerebf8d0e2004-12-24 06:03:31 +000011//
12//===----------------------------------------------------------------------===//
13
14#include "Win32.h"
Jeff Cohenc2b91622004-12-25 04:50:17 +000015
Jeff Cohen23a1cf32005-02-19 03:01:13 +000016#ifdef __MINGW32__
Reid Spencer48fdf912006-06-01 19:03:21 +000017 #include <imagehlp.h>
Jeff Cohenc2b91622004-12-25 04:50:17 +000018#else
Reid Spencer48fdf912006-06-01 19:03:21 +000019 #include <dbghelp.h>
Jeff Cohenc2b91622004-12-25 04:50:17 +000020#endif
Jeff Cohen1a466352004-12-24 07:57:09 +000021
Stefanus Du Toit5a4e11d2009-04-28 16:37:58 +000022#ifdef _MSC_VER
23 #include <ntverp.h>
24#endif
25
Reid Spencer48fdf912006-06-01 19:03:21 +000026#ifdef __MINGW32__
27 #if (HAVE_LIBIMAGEHLP != 1)
28 #error "libimagehlp.a should be present"
29 #endif
30#else
31 #pragma comment(lib, "dbghelp.lib")
32#endif
Reid Spencerebf8d0e2004-12-24 06:03:31 +000033
34namespace llvm {
35using namespace sys;
36
37//===----------------------------------------------------------------------===//
38//=== WARNING: Implementation here must contain only Win32 specific code
Jeff Cohen1a466352004-12-24 07:57:09 +000039//=== and must not be UNIX code.
Reid Spencerebf8d0e2004-12-24 06:03:31 +000040//===----------------------------------------------------------------------===//
41
Jeff Cohen1a466352004-12-24 07:57:09 +000042static std::vector<HMODULE> OpenedHandles;
43
Chuck Rose III0ccb9302007-11-21 00:37:56 +000044#ifdef _WIN64
45 typedef DWORD64 ModuleBaseType;
46#else
47 typedef ULONG ModuleBaseType;
48#endif
49
Jeff Cohenc2b91622004-12-25 04:50:17 +000050extern "C" {
Stefanus Du Toit5a4e11d2009-04-28 16:37:58 +000051// Use old callback if:
52// - Not using Visual Studio
53// - Visual Studio 2005 or earlier but only if we are not using the Windows SDK
54// or Windows SDK version is older than 6.0
55// Use new callback if:
56// - Newer Visual Studio (comes with newer SDK).
57// - Visual Studio 2005 with Windows SDK 6.0+
58#if !defined(_MSC_VER) || _MSC_VER < 1500 && (!defined(VER_PRODUCTBUILD) || VER_PRODUCTBUILD < 6000)
Jeff Cohenc2b91622004-12-25 04:50:17 +000059 static BOOL CALLBACK ELM_Callback(PSTR ModuleName,
Chuck Rose III0ccb9302007-11-21 00:37:56 +000060 ModuleBaseType ModuleBase,
Jeff Cohenc2b91622004-12-25 04:50:17 +000061 ULONG ModuleSize,
62 PVOID UserContext)
Anton Korobeynikov47ccf1a2008-02-22 10:08:31 +000063#else
64 static BOOL CALLBACK ELM_Callback(PCSTR ModuleName,
65 ModuleBaseType ModuleBase,
66 ULONG ModuleSize,
67 PVOID UserContext)
68#endif
Jeff Cohenc2b91622004-12-25 04:50:17 +000069 {
70 // Ignore VC++ runtimes prior to 7.1. Somehow some of them get loaded
71 // into the process.
72 if (stricmp(ModuleName, "msvci70") != 0 &&
73 stricmp(ModuleName, "msvcirt") != 0 &&
74 stricmp(ModuleName, "msvcp50") != 0 &&
75 stricmp(ModuleName, "msvcp60") != 0 &&
76 stricmp(ModuleName, "msvcp70") != 0 &&
77 stricmp(ModuleName, "msvcr70") != 0 &&
Anton Korobeynikovcd79df02006-12-19 15:24:18 +000078#ifndef __MINGW32__
79 // Mingw32 uses msvcrt.dll by default. Don't ignore it.
80 // Otherwise, user should be aware, what he's doing :)
Jeff Cohenc2b91622004-12-25 04:50:17 +000081 stricmp(ModuleName, "msvcrt") != 0 &&
Anton Korobeynikovcd79df02006-12-19 15:24:18 +000082#endif
Jeff Cohenc2b91622004-12-25 04:50:17 +000083 stricmp(ModuleName, "msvcrt20") != 0 &&
84 stricmp(ModuleName, "msvcrt40") != 0) {
85 OpenedHandles.push_back((HMODULE)ModuleBase);
86 }
87 return TRUE;
88 }
Jeff Cohen1a466352004-12-24 07:57:09 +000089}
90
Chris Lattneradcbce02006-07-07 17:12:36 +000091bool DynamicLibrary::LoadLibraryPermanently(const char *filename,
Owen Andersonf37feb92009-06-25 18:12:44 +000092 std::string *ErrMsg) {
Jeff Cohen1a466352004-12-24 07:57:09 +000093 if (filename) {
94 HMODULE a_handle = LoadLibrary(filename);
95
Jeff Cohen715bd762006-01-29 22:02:52 +000096 if (a_handle == 0)
Reid Spencer05545752006-08-25 21:37:17 +000097 return MakeErrMsg(ErrMsg, std::string(filename) + ": Can't open : ");
Jeff Cohen1a466352004-12-24 07:57:09 +000098
Jeff Cohen715bd762006-01-29 22:02:52 +000099 OpenedHandles.push_back(a_handle);
Jeff Cohen1a466352004-12-24 07:57:09 +0000100 } else {
Jeff Cohen715bd762006-01-29 22:02:52 +0000101 // When no file is specified, enumerate all DLLs and EXEs in the
Jeff Cohen1a466352004-12-24 07:57:09 +0000102 // process.
103 EnumerateLoadedModules(GetCurrentProcess(), ELM_Callback, 0);
104 }
105
Jeff Cohenc2b91622004-12-25 04:50:17 +0000106 // Because we don't remember the handle, we will never free it; hence,
Jeff Cohen1a466352004-12-24 07:57:09 +0000107 // it is loaded permanently.
Chris Lattneradcbce02006-07-07 17:12:36 +0000108 return false;
Jeff Cohen1a466352004-12-24 07:57:09 +0000109}
110
Anton Korobeynikov47ccf1a2008-02-22 10:08:31 +0000111// Stack probing routines are in the support library (e.g. libgcc), but we don't
112// have dynamic linking on windows. Provide a hook.
113#if defined(__MINGW32__) || defined (_MSC_VER)
114 #define EXPLICIT_SYMBOL(SYM) \
115 if (!strcmp(symbolName, #SYM)) return (void*)&SYM
116 #define EXPLICIT_SYMBOL2(SYMFROM, SYMTO) \
117 if (!strcmp(symbolName, #SYMFROM)) return (void*)&SYMTO
118 #define EXPLICIT_SYMBOL_DEF(SYM) \
119 extern "C" { extern void *SYM; }
120
121 #if defined(__MINGW32__)
122 EXPLICIT_SYMBOL_DEF(_alloca);
123 EXPLICIT_SYMBOL_DEF(__main);
Anton Korobeynikov232a4ab2008-06-06 07:20:07 +0000124 EXPLICIT_SYMBOL_DEF(__ashldi3);
125 EXPLICIT_SYMBOL_DEF(__ashrdi3);
126 EXPLICIT_SYMBOL_DEF(__cmpdi2);
127 EXPLICIT_SYMBOL_DEF(__divdi3);
Anton Korobeynikov232a4ab2008-06-06 07:20:07 +0000128 EXPLICIT_SYMBOL_DEF(__fixdfdi);
129 EXPLICIT_SYMBOL_DEF(__fixsfdi);
130 EXPLICIT_SYMBOL_DEF(__fixunsdfdi);
131 EXPLICIT_SYMBOL_DEF(__fixunssfdi);
132 EXPLICIT_SYMBOL_DEF(__floatdidf);
133 EXPLICIT_SYMBOL_DEF(__floatdisf);
134 EXPLICIT_SYMBOL_DEF(__lshrdi3);
135 EXPLICIT_SYMBOL_DEF(__moddi3);
136 EXPLICIT_SYMBOL_DEF(__udivdi3);
137 EXPLICIT_SYMBOL_DEF(__umoddi3);
Anton Korobeynikov47ccf1a2008-02-22 10:08:31 +0000138 #elif defined(_MSC_VER)
139 EXPLICIT_SYMBOL_DEF(_alloca_probe);
140 #endif
141#endif
142
Jeff Cohen1a466352004-12-24 07:57:09 +0000143void* DynamicLibrary::SearchForAddressOfSymbol(const char* symbolName) {
Jeff Cohen85046902006-01-30 04:33:51 +0000144 // First check symbols added via AddSymbol().
Chris Lattner01d9a1b2009-07-08 00:52:12 +0000145 if (ExplicitSymbols) {
146 std::map<std::string, void *>::iterator I =
147 ExplicitSymbols->find(symbolName);
148 std::map<std::string, void *>::iterator E = ExplicitSymbols->end();
149 if (I != E)
150 return I->second;
151 }
Jeff Cohen85046902006-01-30 04:33:51 +0000152
153 // Now search the libraries.
Jeff Cohen1a466352004-12-24 07:57:09 +0000154 for (std::vector<HMODULE>::iterator I = OpenedHandles.begin(),
155 E = OpenedHandles.end(); I != E; ++I) {
156 FARPROC ptr = GetProcAddress((HMODULE)*I, symbolName);
Owen Andersonf37feb92009-06-25 18:12:44 +0000157 if (ptr) {
Jeff Cohenc18671c2004-12-30 03:02:31 +0000158 return (void *) ptr;
Owen Andersonf37feb92009-06-25 18:12:44 +0000159 }
Jeff Cohen1a466352004-12-24 07:57:09 +0000160 }
161
Anton Korobeynikov52488962007-06-25 07:12:14 +0000162#if defined(__MINGW32__)
Anton Korobeynikovcd79df02006-12-19 15:24:18 +0000163 {
164 EXPLICIT_SYMBOL(_alloca);
Anton Korobeynikov47ccf1a2008-02-22 10:08:31 +0000165 EXPLICIT_SYMBOL(__main);
Anton Korobeynikov232a4ab2008-06-06 07:20:07 +0000166 EXPLICIT_SYMBOL(__ashldi3);
167 EXPLICIT_SYMBOL(__ashrdi3);
168 EXPLICIT_SYMBOL(__cmpdi2);
169 EXPLICIT_SYMBOL(__divdi3);
Anton Korobeynikov232a4ab2008-06-06 07:20:07 +0000170 EXPLICIT_SYMBOL(__fixdfdi);
171 EXPLICIT_SYMBOL(__fixsfdi);
172 EXPLICIT_SYMBOL(__fixunsdfdi);
173 EXPLICIT_SYMBOL(__fixunssfdi);
174 EXPLICIT_SYMBOL(__floatdidf);
175 EXPLICIT_SYMBOL(__floatdisf);
176 EXPLICIT_SYMBOL(__lshrdi3);
177 EXPLICIT_SYMBOL(__moddi3);
178 EXPLICIT_SYMBOL(__udivdi3);
179 EXPLICIT_SYMBOL(__umoddi3);
Anton Korobeynikov47ccf1a2008-02-22 10:08:31 +0000180
Anton Korobeynikovcd79df02006-12-19 15:24:18 +0000181 EXPLICIT_SYMBOL2(alloca, _alloca);
182#undef EXPLICIT_SYMBOL
183#undef EXPLICIT_SYMBOL2
184#undef EXPLICIT_SYMBOL_DEF
185 }
Anton Korobeynikov52488962007-06-25 07:12:14 +0000186#elif defined(_MSC_VER)
187 {
188 EXPLICIT_SYMBOL2(alloca, _alloca_probe);
189 EXPLICIT_SYMBOL2(_alloca, _alloca_probe);
190#undef EXPLICIT_SYMBOL
191#undef EXPLICIT_SYMBOL2
192#undef EXPLICIT_SYMBOL_DEF
193 }
Anton Korobeynikovcd79df02006-12-19 15:24:18 +0000194#endif
195
Jeff Cohen1a466352004-12-24 07:57:09 +0000196 return 0;
Reid Spencerebf8d0e2004-12-24 06:03:31 +0000197}
198
Reid Spencerebf8d0e2004-12-24 06:03:31 +0000199}
200