ReceiveTempSMS
/
Sweden-Number
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
Sweden-Number/dlls/dbghelp/dbghelp.c

637 lines
21 KiB
C
Raw Blame History

/*
* File dbghelp.c - generic routines (process) for dbghelp DLL
*
* Copyright (C) 2004, Eric Pouech
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "dbghelp_private.h"
#include "winerror.h"
#include "psapi.h"
#include "wine/debug.h"
#include "wdbgexts.h"
#include "winnls.h"
WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
/* TODO
* - support for symbols' types is still partly missing
* + C++ support
* + we should store the underlying type for an enum in the symt_enum struct
* + for enums, we store the names & values (associated to the enum type),
* but those values are not directly usable from a debugger (that's why, I
* assume, that we have also to define constants for enum values, as
* Codeview does BTW.
* + SymEnumTypes should only return *user* defined types (UDT, typedefs...) not
* all the types stored/used in the modules (like char*)
* - SymGetLine{Next|Prev} don't work as expected (they don't seem to work across
* functions, and even across function blocks...). Basically, for *Next* to work
* it requires an address after the prolog of the func (the base address of the
* func doesn't work)
* - most options (dbghelp_options) are not used (loading lines...)
* - in symbol lookup by name, we don't use RE everywhere we should. Moreover, when
* we're supposed to use RE, it doesn't make use of our hash tables. Therefore,
* we could use hash if name isn't a RE, and fall back to a full search when we
* get a full RE
* - msc:
* + we should add parameters' types to the function's signature
* while processing a function's parameters
* + add support for function-less labels (as MSC seems to define them)
* + C++ management
* - stabs:
* + when, in a same module, the same definition is used in several compilation
* units, we get several definitions of the same object (especially
* struct/union). we should find a way not to duplicate them
* + in some cases (dlls/user/dialog16.c DIALOG_GetControl16), the same static
* global variable is defined several times (at different scopes). We are
* getting several of those while looking for a unique symbol. Part of the
* issue is that we don't give a scope to a static variable inside a function
* + C++ management
*/
unsigned dbghelp_options = SYMOPT_UNDNAME;
HANDLE hMsvcrt = NULL;
/***********************************************************************
* DllMain (DEBUGHLP.@)
*/
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
{
switch (fdwReason)
{
case DLL_PROCESS_ATTACH: break;
case DLL_PROCESS_DETACH:
if (hMsvcrt) FreeLibrary(hMsvcrt);
break;
case DLL_THREAD_ATTACH: break;
case DLL_THREAD_DETACH: break;
default: break;
}
return TRUE;
}
static struct process* process_first /* = NULL */;
/******************************************************************
* process_find_by_handle
*
*/
struct process* process_find_by_handle(HANDLE hProcess)
{
struct process* p;
for (p = process_first; p && p->handle != hProcess; p = p->next);
if (!p) SetLastError(ERROR_INVALID_HANDLE);
return p;
}
/******************************************************************
* validate_addr64 (internal)
*
*/
BOOL validate_addr64(DWORD64 addr)
{
if (addr >> 32)
{
FIXME("Unsupported address %s\n", wine_dbgstr_longlong(addr));
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
return TRUE;
}
/******************************************************************
* fetch_buffer
*
* Ensures process' internal buffer is large enough.
*/
void* fetch_buffer(struct process* pcs, unsigned size)
{
if (size > pcs->buffer_size)
{
if (pcs->buffer)
pcs->buffer = HeapReAlloc(GetProcessHeap(), 0, pcs->buffer, size);
else
pcs->buffer = HeapAlloc(GetProcessHeap(), 0, size);
pcs->buffer_size = (pcs->buffer) ? size : 0;
}
return pcs->buffer;
}
/******************************************************************
* SymSetSearchPathW (DBGHELP.@)
*
*/
BOOL WINAPI SymSetSearchPathW(HANDLE hProcess, PCWSTR searchPath)
{
struct process* pcs = process_find_by_handle(hProcess);
if (!pcs) return FALSE;
if (!searchPath) return FALSE;
HeapFree(GetProcessHeap(), 0, pcs->search_path);
pcs->search_path = lstrcpyW(HeapAlloc(GetProcessHeap(), 0,
(lstrlenW(searchPath) + 1) * sizeof(WCHAR)),
searchPath);
return TRUE;
}
/******************************************************************
* SymSetSearchPath (DBGHELP.@)
*
*/
BOOL WINAPI SymSetSearchPath(HANDLE hProcess, PCSTR searchPath)
{
BOOL ret = FALSE;
unsigned len;
WCHAR* sp;
len = MultiByteToWideChar(CP_ACP, 0, searchPath, -1, NULL, 0);
if ((sp = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR))))
{
MultiByteToWideChar(CP_ACP, 0, searchPath, -1, sp, len);
ret = SymSetSearchPathW(hProcess, sp);
HeapFree(GetProcessHeap(), 0, sp);
}
return ret;
}
/***********************************************************************
* SymGetSearchPathW (DBGHELP.@)
*/
BOOL WINAPI SymGetSearchPathW(HANDLE hProcess, LPWSTR szSearchPath,
DWORD SearchPathLength)
{
struct process* pcs = process_find_by_handle(hProcess);
if (!pcs) return FALSE;
lstrcpynW(szSearchPath, pcs->search_path, SearchPathLength);
return TRUE;
}
/***********************************************************************
* SymGetSearchPath (DBGHELP.@)
*/
BOOL WINAPI SymGetSearchPath(HANDLE hProcess, LPSTR szSearchPath,
DWORD SearchPathLength)
{
WCHAR* buffer = HeapAlloc(GetProcessHeap(), 0, SearchPathLength);
BOOL ret = FALSE;
if (buffer)
{
ret = SymGetSearchPathW(hProcess, buffer,
SearchPathLength * sizeof(WCHAR));
if (ret)
WideCharToMultiByte(CP_ACP, 0, buffer, SearchPathLength,
szSearchPath, SearchPathLength, NULL, NULL);
HeapFree(GetProcessHeap(), 0, buffer);
}
return ret;
}
/******************************************************************
* invade_process
*
* SymInitialize helper: loads in dbghelp all known (and loaded modules)
* this assumes that hProcess is a handle on a valid process
*/
static BOOL WINAPI process_invade_cb(char* name, DWORD base, DWORD size, void* user)
{
char tmp[MAX_PATH];
HANDLE hProcess = (HANDLE)user;
if (!GetModuleFileNameExA(hProcess, (HMODULE)base,
tmp, sizeof(tmp)))
lstrcpynA(tmp, name, sizeof(tmp));
SymLoadModule(hProcess, 0, tmp, name, base, size);
return TRUE;
}
/******************************************************************
* check_live_target
*
*/
static BOOL check_live_target(struct process* pcs)
{
if (!GetProcessId(pcs->handle)) return FALSE;
if (GetEnvironmentVariableA("DBGHELP_NOLIVE", NULL, 0)) return FALSE;
elf_read_wine_loader_dbg_info(pcs);
return TRUE;
}
/******************************************************************
* SymInitializeW (DBGHELP.@)
*
* The initialisation of a dbghelp's context.
* Note that hProcess doesn't need to be a valid process handle (except
* when fInvadeProcess is TRUE).
* Since, we're also allow to load ELF (pure) libraries and Wine ELF libraries
* containing PE (and NE) module(s), here's how we handle it:
* - we load every module (ELF, NE, PE) passed in SymLoadModule
* - in fInvadeProcess (in SymInitialize) is TRUE, we set up what is called ELF
* synchronization: hProcess should be a valid process handle, and we hook
* ourselves on hProcess's loaded ELF-modules, and keep this list in sync with
* our internal ELF modules representation (loading / unloading). This way,
* we'll pair every loaded builtin PE module with its ELF counterpart (and
* access its debug information).
* - if fInvadeProcess (in SymInitialize) is FALSE, we check anyway if the
* hProcess refers to a running process. We use some heuristics here, so YMMV.
* If we detect a live target, then we get the same handling as if
* fInvadeProcess is TRUE (except that the modules are not loaded). Otherwise,
* we won't be able to make the peering between a builtin PE module and its ELF
* counterpart. Hence we won't be able to provide the requested debug
* information. We'll however be able to load native PE modules (and their
* debug information) without any trouble.
* Note also that this scheme can be intertwined with the deferred loading
* mechanism (ie only load the debug information when we actually need it).
*/
BOOL WINAPI SymInitializeW(HANDLE hProcess, PCWSTR UserSearchPath, BOOL fInvadeProcess)
{
struct process* pcs;
TRACE("(%p %s %u)\n", hProcess, debugstr_w(UserSearchPath), fInvadeProcess);
if (process_find_by_handle(hProcess))
FIXME("what to do ??\n");
pcs = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*pcs));
if (!pcs) return FALSE;
pcs->handle = hProcess;
if (UserSearchPath)
{
pcs->search_path = lstrcpyW(HeapAlloc(GetProcessHeap(), 0,
(lstrlenW(UserSearchPath) + 1) * sizeof(WCHAR)),
UserSearchPath);
}
else
{
unsigned size;
unsigned len;
static const WCHAR sym_path[] = {'_','N','T','_','S','Y','M','B','O','L','_','P','A','T','H',0};
static const WCHAR alt_sym_path[] = {'_','N','T','_','A','L','T','E','R','N','A','T','E','_','S','Y','M','B','O','L','_','P','A','T','H',0};
pcs->search_path = HeapAlloc(GetProcessHeap(), 0, (len = MAX_PATH) * sizeof(WCHAR));
while ((size = GetCurrentDirectoryW(len, pcs->search_path)) >= len)
pcs->search_path = HeapReAlloc(GetProcessHeap(), 0, pcs->search_path, (len *= 2) * sizeof(WCHAR));
pcs->search_path = HeapReAlloc(GetProcessHeap(), 0, pcs->search_path, (size + 1) * sizeof(WCHAR));
len = GetEnvironmentVariableW(sym_path, NULL, 0);
if (len)
{
pcs->search_path = HeapReAlloc(GetProcessHeap(), 0, pcs->search_path, (size + 1 + len + 1) * sizeof(WCHAR));
pcs->search_path[size] = ';';
GetEnvironmentVariableW(sym_path, pcs->search_path + size + 1, len);
size += 1 + len;
}
len = GetEnvironmentVariableW(alt_sym_path, NULL, 0);
if (len)
{
pcs->search_path = HeapReAlloc(GetProcessHeap(), 0, pcs->search_path, (size + 1 + len + 1) * sizeof(WCHAR));
pcs->search_path[size] = ';';
GetEnvironmentVariableW(alt_sym_path, pcs->search_path + size + 1, len);
size += 1 + len;
}
}
pcs->lmodules = NULL;
pcs->dbg_hdr_addr = 0;
pcs->next = process_first;
process_first = pcs;
if (check_live_target(pcs))
{
if (fInvadeProcess)
EnumerateLoadedModules(hProcess, process_invade_cb, (void*)hProcess);
elf_synchronize_module_list(pcs);
}
else if (fInvadeProcess)
{
SymCleanup(hProcess);
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
return TRUE;
}
/******************************************************************
* SymInitialize (DBGHELP.@)
*
*
*/
BOOL WINAPI SymInitialize(HANDLE hProcess, PCSTR UserSearchPath, BOOL fInvadeProcess)
{
WCHAR* sp = NULL;
BOOL ret;
if (UserSearchPath)
{
unsigned len;
len = MultiByteToWideChar(CP_ACP, 0, UserSearchPath, -1, NULL, 0);
sp = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
MultiByteToWideChar(CP_ACP, 0, UserSearchPath, -1, sp, len);
}
ret = SymInitializeW(hProcess, sp, fInvadeProcess);
HeapFree(GetProcessHeap(), 0, sp);
return ret;
}
/******************************************************************
* SymCleanup (DBGHELP.@)
*
*/
BOOL WINAPI SymCleanup(HANDLE hProcess)
{
struct process** ppcs;
struct process* next;
for (ppcs = &process_first; *ppcs; ppcs = &(*ppcs)->next)
{
if ((*ppcs)->handle == hProcess)
{
while ((*ppcs)->lmodules) module_remove(*ppcs, (*ppcs)->lmodules);
HeapFree(GetProcessHeap(), 0, (*ppcs)->search_path);
next = (*ppcs)->next;
HeapFree(GetProcessHeap(), 0, *ppcs);
*ppcs = next;
return TRUE;
}
}
return FALSE;
}
/******************************************************************
* SymSetOptions (DBGHELP.@)
*
*/
DWORD WINAPI SymSetOptions(DWORD opts)
{
struct process* pcs;
for (pcs = process_first; pcs; pcs = pcs->next)
{
pcs_callback(pcs, CBA_SET_OPTIONS, &opts);
}
return dbghelp_options = opts;
}
/******************************************************************
* SymGetOptions (DBGHELP.@)
*
*/
DWORD WINAPI SymGetOptions(void)
{
return dbghelp_options;
}
/******************************************************************
* SymSetParentWindow (DBGHELP.@)
*
*/
BOOL WINAPI SymSetParentWindow(HWND hwnd)
{
/* Save hwnd so it can be used as parent window */
FIXME("(%p): stub\n", hwnd);
return TRUE;
}
/******************************************************************
* SymSetContext (DBGHELP.@)
*
*/
BOOL WINAPI SymSetContext(HANDLE hProcess, PIMAGEHLP_STACK_FRAME StackFrame,
PIMAGEHLP_CONTEXT Context)
{
struct process* pcs = process_find_by_handle(hProcess);
if (!pcs) return FALSE;
if (pcs->ctx_frame.ReturnOffset == StackFrame->ReturnOffset &&
pcs->ctx_frame.FrameOffset == StackFrame->FrameOffset &&
pcs->ctx_frame.StackOffset == StackFrame->StackOffset)
{
TRACE("Setting same frame {rtn=%s frm=%s stk=%s}\n",
wine_dbgstr_longlong(pcs->ctx_frame.ReturnOffset),
wine_dbgstr_longlong(pcs->ctx_frame.FrameOffset),
wine_dbgstr_longlong(pcs->ctx_frame.StackOffset));
SetLastError(ERROR_ACCESS_DENIED); /* latest MSDN says ERROR_SUCCESS */
return FALSE;
}
pcs->ctx_frame = *StackFrame;
/* MSDN states that Context is not (no longer?) used */
return TRUE;
}
/******************************************************************
* reg_cb64to32 (internal)
*
* Registered callback for converting information from 64 bit to 32 bit
*/
static BOOL CALLBACK reg_cb64to32(HANDLE hProcess, ULONG action, ULONG64 data, ULONG64 user)
{
PSYMBOL_REGISTERED_CALLBACK cb32 = (PSYMBOL_REGISTERED_CALLBACK)(DWORD)(user >> 32);
DWORD user32 = (DWORD)user;
void* data32;
IMAGEHLP_DEFERRED_SYMBOL_LOAD64* idsl64;
IMAGEHLP_DEFERRED_SYMBOL_LOAD idsl;
switch (action)
{
case CBA_DEBUG_INFO:
case CBA_DEFERRED_SYMBOL_LOAD_CANCEL:
case CBA_SET_OPTIONS:
case CBA_SYMBOLS_UNLOADED:
data32 = (void*)(DWORD)data;
break;
case CBA_DEFERRED_SYMBOL_LOAD_COMPLETE:
case CBA_DEFERRED_SYMBOL_LOAD_FAILURE:
case CBA_DEFERRED_SYMBOL_LOAD_PARTIAL:
case CBA_DEFERRED_SYMBOL_LOAD_START:
idsl64 = (IMAGEHLP_DEFERRED_SYMBOL_LOAD64*)(DWORD)data;
if (!validate_addr64(idsl64->BaseOfImage))
return FALSE;
idsl.SizeOfStruct = sizeof(idsl);
idsl.BaseOfImage = (DWORD)idsl64->BaseOfImage;
idsl.CheckSum = idsl64->CheckSum;
idsl.TimeDateStamp = idsl64->TimeDateStamp;
memcpy(idsl.FileName, idsl64->FileName, sizeof(idsl.FileName));
idsl.Reparse = idsl64->Reparse;
data32 = &idsl;
break;
case CBA_DUPLICATE_SYMBOL:
case CBA_EVENT:
case CBA_READ_MEMORY:
default:
FIXME("No mapping for action %lu\n", action);
return FALSE;
}
return cb32(hProcess, action, (PVOID)data32, (PVOID)user32);
}
/******************************************************************
* pcs_callback (internal)
*/
BOOL pcs_callback(const struct process* pcs, ULONG action, void* data)
{
TRACE("%p %lu %p\n", pcs, action, data);
if (!pcs->reg_cb) return FALSE;
if (pcs->reg_is_unicode)
{
IMAGEHLP_DEFERRED_SYMBOL_LOAD64* idsl;
IMAGEHLP_DEFERRED_SYMBOL_LOADW64 idslW;
switch (action)
{
case CBA_DEBUG_INFO:
case CBA_DEFERRED_SYMBOL_LOAD_CANCEL:
case CBA_SET_OPTIONS:
case CBA_SYMBOLS_UNLOADED:
break;
case CBA_DEFERRED_SYMBOL_LOAD_COMPLETE:
case CBA_DEFERRED_SYMBOL_LOAD_FAILURE:
case CBA_DEFERRED_SYMBOL_LOAD_PARTIAL:
case CBA_DEFERRED_SYMBOL_LOAD_START:
idsl = (IMAGEHLP_DEFERRED_SYMBOL_LOAD64*)(DWORD)data;
idslW.SizeOfStruct = sizeof(idslW);
idslW.BaseOfImage = idsl->BaseOfImage;
idslW.CheckSum = idsl->CheckSum;
idslW.TimeDateStamp = idsl->TimeDateStamp;
MultiByteToWideChar(CP_ACP, 0, idsl->FileName, -1,
idslW.FileName, sizeof(idslW.FileName) / sizeof(WCHAR));
idslW.Reparse = idsl->Reparse;
data = &idslW;
break;
case CBA_DUPLICATE_SYMBOL:
case CBA_EVENT:
case CBA_READ_MEMORY:
default:
FIXME("No mapping for action %lu\n", action);
return FALSE;
}
}
return pcs->reg_cb(pcs->handle, action, (ULONG64)(DWORD_PTR)data, pcs->reg_user);
}
/******************************************************************
* sym_register_cb
*
* Helper for registering a callback.
*/
static BOOL sym_register_cb(HANDLE hProcess,
PSYMBOL_REGISTERED_CALLBACK64 cb,
DWORD64 user, BOOL unicode)
{
struct process* pcs = process_find_by_handle(hProcess);
if (!pcs) return FALSE;
pcs->reg_cb = cb;
pcs->reg_is_unicode = unicode;
pcs->reg_user = user;
return TRUE;
}
/***********************************************************************
* SymRegisterCallback (DBGHELP.@)
*/
BOOL WINAPI SymRegisterCallback(HANDLE hProcess,
PSYMBOL_REGISTERED_CALLBACK CallbackFunction,
PVOID UserContext)
{
DWORD64 tmp = ((ULONGLONG)(DWORD)CallbackFunction << 32) | (DWORD)UserContext;
TRACE("(%p, %p, %p)\n",
hProcess, CallbackFunction, UserContext);
return sym_register_cb(hProcess, reg_cb64to32, tmp, FALSE);
}
/***********************************************************************
* SymRegisterCallback64 (DBGHELP.@)
*/
BOOL WINAPI SymRegisterCallback64(HANDLE hProcess,
PSYMBOL_REGISTERED_CALLBACK64 CallbackFunction,
ULONG64 UserContext)
{
TRACE("(%p, %p, %s)\n",
hProcess, CallbackFunction, wine_dbgstr_longlong(UserContext));
return sym_register_cb(hProcess, CallbackFunction, UserContext, FALSE);
}
/***********************************************************************
* SymRegisterCallbackW64 (DBGHELP.@)
*/
BOOL WINAPI SymRegisterCallbackW64(HANDLE hProcess,
PSYMBOL_REGISTERED_CALLBACK64 CallbackFunction,
ULONG64 UserContext)
{
TRACE("(%p, %p, %s)\n",
hProcess, CallbackFunction, wine_dbgstr_longlong(UserContext));
return sym_register_cb(hProcess, CallbackFunction, UserContext, TRUE);
}
/* This is imagehlp version not dbghelp !! */
static API_VERSION api_version = { 4, 0, 2, 0 };
/***********************************************************************
* ImagehlpApiVersion (DBGHELP.@)
*/
LPAPI_VERSION WINAPI ImagehlpApiVersion(VOID)
{
return &api_version;
}
/***********************************************************************
* ImagehlpApiVersionEx (DBGHELP.@)
*/
LPAPI_VERSION WINAPI ImagehlpApiVersionEx(LPAPI_VERSION AppVersion)
{
if (!AppVersion) return NULL;
AppVersion->MajorVersion = api_version.MajorVersion;
AppVersion->MinorVersion = api_version.MinorVersion;
AppVersion->Revision = api_version.Revision;
AppVersion->Reserved = api_version.Reserved;
return AppVersion;
}
/******************************************************************
* ExtensionApiVersion (DBGHELP.@)
*/
LPEXT_API_VERSION WINAPI ExtensionApiVersion(void)
{
static EXT_API_VERSION eav = {5, 5, 5, 0};
return &eav;
}
/******************************************************************
* WinDbgExtensionDllInit (DBGHELP.@)
*/
void WINAPI WinDbgExtensionDllInit(PWINDBG_EXTENSION_APIS lpExtensionApis,
unsigned short major, unsigned short minor)
{
}
Reference in New Issue View Git Blame Copy Permalink