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Sweden-Number/debugger/module.c

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/* -*- tab-width: 8; c-basic-offset: 4 -*- */
/*
* File module.c - module handling for the wine debugger
*
* Copyright (C) 1993, Eric Youngdale.
* 2000, Eric Pouech
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "neexe.h"
#include "file.h"
#include "debugger.h"
#include "toolhelp.h"
#include "wingdi.h"
#include "winuser.h"
/***********************************************************************
* Creates and links a new module to the current process
*
*/
DBG_MODULE* DEBUG_AddModule(const char* name, int type,
void* mod_addr, HMODULE hmodule)
{
DBG_MODULE* wmod;
if (!(wmod = (DBG_MODULE*)DBG_alloc(sizeof(*wmod))))
return NULL;
memset(wmod, 0, sizeof(*wmod));
wmod->next = DEBUG_CurrProcess->modules;
wmod->status = DM_STATUS_NEW;
wmod->type = type;
wmod->load_addr = mod_addr;
wmod->handle = hmodule;
wmod->dbg_index = DEBUG_CurrProcess->next_index;
wmod->module_name = DBG_strdup(name);
DEBUG_CurrProcess->modules = wmod;
return wmod;
}
/***********************************************************************
* DEBUG_FindModuleByName
*
*/
DBG_MODULE* DEBUG_FindModuleByName(const char* name, int type)
{
DBG_MODULE* wmod;
for (wmod = DEBUG_CurrProcess->modules; wmod; wmod = wmod->next) {
if ((type == DM_TYPE_UNKNOWN || type == wmod->type) &&
!strcasecmp(name, wmod->module_name)) break;
}
return wmod;
}
/***********************************************************************
* DEBUG_FindModuleByAddr
*
* either the addr where module is loaded, or any address inside the
* module
*/
DBG_MODULE* DEBUG_FindModuleByAddr(void* addr, int type)
{
DBG_MODULE* wmod;
DBG_MODULE* res = NULL;
for (wmod = DEBUG_CurrProcess->modules; wmod; wmod = wmod->next) {
if ((type == DM_TYPE_UNKNOWN || type == wmod->type) &&
(u_long)addr >= (u_long)wmod->load_addr &&
(!res || res->load_addr < wmod->load_addr))
res = wmod;
}
return res;
}
/***********************************************************************
* DEBUG_FindModuleByHandle
*/
DBG_MODULE* DEBUG_FindModuleByHandle(HANDLE handle, int type)
{
DBG_MODULE* wmod;
for (wmod = DEBUG_CurrProcess->modules; wmod; wmod = wmod->next) {
if ((type == DM_TYPE_UNKNOWN || type == wmod->type) && handle == wmod->handle) break;
}
return wmod;
}
/***********************************************************************
* DEBUG_GetProcessMainModule
*/
DBG_MODULE* DEBUG_GetProcessMainModule(DBG_PROCESS* process)
{
DBG_MODULE* wmod;
if (!process) return NULL;
/* main module is the first to be loaded on a given process, so it's the last on
* the list */
for (wmod = process->modules; wmod && wmod->next; wmod = wmod->next);
return wmod;
}
/***********************************************************************
* DEBUG_RegisterELFModule
*
* ELF modules are also entered into the list - this is so that we
* can make 'info shared' types of displays possible.
*/
DBG_MODULE* DEBUG_RegisterELFModule(u_long load_addr, const char* name)
{
DBG_MODULE* wmod = DEBUG_AddModule(name, DM_TYPE_ELF, (void*)load_addr, 0);
if (!wmod) return NULL;
wmod->status = DM_STATUS_LOADED;
DEBUG_CurrProcess->next_index++;
return wmod;
}
/***********************************************************************
* DEBUG_RegisterPEModule
*
*/
DBG_MODULE* DEBUG_RegisterPEModule(HMODULE hModule, u_long load_addr, const char *module_name)
{
DBG_MODULE* wmod = DEBUG_AddModule(module_name, DM_TYPE_PE, (void*)load_addr, hModule);
if (!wmod) return NULL;
DEBUG_CurrProcess->next_index++;
return wmod;
}
/***********************************************************************
* DEBUG_RegisterNEModule
*
*/
DBG_MODULE* DEBUG_RegisterNEModule(HMODULE hModule, void* load_addr, const char *module_name)
{
DBG_MODULE* wmod = DEBUG_AddModule(module_name, DM_TYPE_NE, load_addr, hModule);
if (!wmod) return NULL;
wmod->status = DM_STATUS_LOADED;
DEBUG_CurrProcess->next_index++;
return wmod;
}
#if 0
/***********************************************************************
* DEBUG_GetEP16
*
* Helper function fo DEBUG_LoadModuleEPs16:
* finds the address of a given entry point from a given module
*/
static BOOL DEBUG_GetEP16(char* moduleAddr, const NE_MODULE* module,
WORD ordinal, DBG_ADDR* addr)
{
void* idx;
ET_ENTRY entry;
ET_BUNDLE bundle;
SEGTABLEENTRY ste;
bundle.next = module->entry_table;
do {
if (!bundle.next)
return FALSE;
idx = moduleAddr + bundle.next;
if (!DEBUG_READ_MEM_VERBOSE(idx, &bundle, sizeof(bundle)))
return FALSE;
} while ((ordinal < bundle.first + 1) || (ordinal > bundle.last));
if (!DEBUG_READ_MEM_VERBOSE((char*)idx + sizeof(ET_BUNDLE) +
(ordinal - bundle.first - 1) * sizeof(ET_ENTRY),
&entry, sizeof(ET_ENTRY)))
return FALSE;
addr->seg = entry.segnum;
addr->off = entry.offs;
if (addr->seg == 0xfe) addr->seg = 0xffff; /* constant entry */
else {
if (!DEBUG_READ_MEM_VERBOSE(moduleAddr + module->seg_table +
sizeof(ste) * (addr->seg - 1),
&ste, sizeof(ste)))
return FALSE;
addr->seg = GlobalHandleToSel16(ste.hSeg);
}
return TRUE;
}
/***********************************************************************
* DEBUG_LoadModule16
*
* Load the entry points of a Win16 module into the hash table.
*/
static void DEBUG_LoadModule16(HMODULE hModule, NE_MODULE* module, char* moduleAddr, const char* name)
{
DBG_VALUE value;
BYTE buf[1 + 256 + 2];
char epname[512];
char* cpnt;
DBG_MODULE* wmod;
wmod = DEBUG_RegisterNEModule(hModule, moduleAddr, name);
value.type = NULL;
value.cookie = DV_TARGET;
value.addr.seg = 0;
value.addr.off = 0;
cpnt = moduleAddr + module->name_table;
/* First search the resident names */
/* skip module name */
if (!DEBUG_READ_MEM_VERBOSE(cpnt, buf, sizeof(buf)) || !buf[0])
return;
cpnt += 1 + buf[0] + sizeof(WORD);
while (DEBUG_READ_MEM_VERBOSE(cpnt, buf, sizeof(buf)) && buf[0]) {
sprintf(epname, "%s.%.*s", name, buf[0], &buf[1]);
if (DEBUG_GetEP16(moduleAddr, module, *(WORD*)&buf[1 + buf[0]], &value.addr)) {
DEBUG_AddSymbol(epname, &value, NULL, SYM_WIN32 | SYM_FUNC);
}
cpnt += buf[0] + 1 + sizeof(WORD);
}
/* Now search the non-resident names table */
if (!module->nrname_handle) return; /* No non-resident table */
cpnt = (char *)GlobalLock16(module->nrname_handle);
while (DEBUG_READ_MEM_VERBOSE(cpnt, buf, sizeof(buf)) && buf[0]) {
sprintf(epname, "%s.%.*s", name, buf[0], &buf[1]);
if (DEBUG_GetEP16(moduleAddr, module, *(WORD*)&buf[1 + buf[0]], &value.addr)) {
DEBUG_AddSymbol(epname, &value, NULL, SYM_WIN32 | SYM_FUNC);
}
cpnt += buf[0] + 1 + sizeof(WORD);
}
GlobalUnlock16(module->nrname_handle);
}
#endif
/***********************************************************************
* DEBUG_LoadModule32
*/
void DEBUG_LoadModule32(const char* name, HANDLE hFile, DWORD base)
{
DBG_VALUE value;
char buffer[512];
char bufstr[256];
int i;
IMAGE_NT_HEADERS pe_header;
DWORD pe_header_ofs;
IMAGE_SECTION_HEADER pe_seg;
DWORD pe_seg_ofs;
IMAGE_DATA_DIRECTORY dir;
DWORD dir_ofs;
DBG_MODULE* wmod;
const char *prefix;
/* FIXME: we make the assumption that hModule == base */
wmod = DEBUG_RegisterPEModule((HMODULE)base, base, name);
DEBUG_Printf(DBG_CHN_TRACE, "Registring 32bit DLL '%s' at %08lx\n", name, base);
value.type = NULL;
value.cookie = DV_TARGET;
value.addr.seg = 0;
value.addr.off = 0;
/* grab PE Header */
if (!DEBUG_READ_MEM_VERBOSE((void*)(base + OFFSET_OF(IMAGE_DOS_HEADER, e_lfanew)),
&pe_header_ofs, sizeof(pe_header_ofs)) ||
!DEBUG_READ_MEM_VERBOSE((void*)(base + pe_header_ofs),
&pe_header, sizeof(pe_header)))
return;
if (wmod) {
DEBUG_RegisterStabsDebugInfo(wmod, hFile, &pe_header, pe_header_ofs);
DEBUG_RegisterMSCDebugInfo(wmod, hFile, &pe_header, pe_header_ofs);
}
/* Add start of DLL */
value.addr.off = base;
if ((prefix = strrchr( name, '\\' ))) prefix++;
else prefix = name;
DEBUG_AddSymbol(prefix, &value, NULL, SYM_WIN32 | SYM_FUNC);
/* Add entry point */
wsnprintf(buffer, sizeof(buffer), "%s.EntryPoint", prefix);
value.addr.off = base + pe_header.OptionalHeader.AddressOfEntryPoint;
DEBUG_AddSymbol(buffer, &value, NULL, SYM_WIN32 | SYM_FUNC);
/* Add start of sections */
pe_seg_ofs = pe_header_ofs + OFFSET_OF(IMAGE_NT_HEADERS, OptionalHeader) +
pe_header.FileHeader.SizeOfOptionalHeader;
for (i = 0; i < pe_header.FileHeader.NumberOfSections; i++, pe_seg_ofs += sizeof(pe_seg)) {
if (!DEBUG_READ_MEM_VERBOSE((void*)(base + pe_seg_ofs), &pe_seg, sizeof(pe_seg)))
continue;
wsnprintf(buffer, sizeof(buffer), "%s.%s", prefix, pe_seg.Name);
value.addr.off = base + pe_seg.VirtualAddress;
DEBUG_AddSymbol(buffer, &value, NULL, SYM_WIN32 | SYM_FUNC);
}
/* Add exported functions */
dir_ofs = pe_header_ofs +
OFFSET_OF(IMAGE_NT_HEADERS,
OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT]);
if (DEBUG_READ_MEM_VERBOSE((void*)(base + dir_ofs), &dir, sizeof(dir)) && dir.Size) {
IMAGE_EXPORT_DIRECTORY exports;
WORD* ordinals = NULL;
void** functions = NULL;
DWORD* names = NULL;
int j;
if (DEBUG_READ_MEM_VERBOSE((void*)(base + dir.VirtualAddress),
&exports, sizeof(exports)) &&
((functions = DBG_alloc(sizeof(functions[0]) * exports.NumberOfFunctions))) &&
DEBUG_READ_MEM_VERBOSE((void*)(base + (DWORD)exports.AddressOfFunctions),
functions, sizeof(functions[0]) * exports.NumberOfFunctions) &&
((ordinals = DBG_alloc(sizeof(ordinals[0]) * exports.NumberOfNames))) &&
DEBUG_READ_MEM_VERBOSE((void*)(base + (DWORD)exports.AddressOfNameOrdinals),
ordinals, sizeof(ordinals[0]) * exports.NumberOfNames) &&
((names = DBG_alloc(sizeof(names[0]) * exports.NumberOfNames))) &&
DEBUG_READ_MEM_VERBOSE((void*)(base + (DWORD)exports.AddressOfNames),
names, sizeof(names[0]) * exports.NumberOfNames)) {
for (i = 0; i < exports.NumberOfNames; i++) {
if (!names[i] ||
!DEBUG_READ_MEM_VERBOSE((void*)(base + names[i]), bufstr, sizeof(bufstr)))
continue;
bufstr[sizeof(bufstr) - 1] = 0;
wsnprintf(buffer, sizeof(buffer), "%s.%s", prefix, bufstr);
value.addr.off = base + (DWORD)functions[ordinals[i]];
DEBUG_AddSymbol(buffer, &value, NULL, SYM_WIN32 | SYM_FUNC);
}
for (i = 0; i < exports.NumberOfFunctions; i++) {
if (!functions[i]) continue;
/* Check if we already added it with a name */
for (j = 0; j < exports.NumberOfNames; j++)
if ((ordinals[j] == i) && names[j]) break;
if (j < exports.NumberOfNames) continue;
wsnprintf(buffer, sizeof(buffer), "%s.%ld", prefix, i + exports.Base);
value.addr.off = base + (DWORD)functions[i];
DEBUG_AddSymbol(buffer, &value, NULL, SYM_WIN32 | SYM_FUNC);
}
}
DBG_free(functions);
DBG_free(ordinals);
DBG_free(names);
}
}
/***********************************************************************
* DEBUG_LoadEntryPoints
*
* Load the entry points of all the modules into the hash table.
*/
int DEBUG_LoadEntryPoints(const char* pfx)
{
int first = 0;
/* FIXME: with address space separation in space, this is plain wrong
* it requires the 16 bit WOW debugging interface...
*/
#if 0
MODULEENTRY entry;
NE_MODULE module;
void* moduleAddr;
int rowcount = 0;
int len;
/* FIXME: we assume that a module is never removed from memory */
/* FIXME: this is (currently plain wrong when debugger is started by
* attaching to an existing program => the 16 bit modules will
* not be shared... not much to do on debugger side... sigh
*/
if (ModuleFirst16(&entry)) do {
if (DEBUG_FindModuleByName(entry.szModule, DM_TYPE_UNKNOWN) ||
!(moduleAddr = NE_GetPtr(entry.hModule)) ||
!DEBUG_READ_MEM_VERBOSE(moduleAddr, &module, sizeof(module)) ||
(module.flags & NE_FFLAGS_WIN32) /* NE module */)
continue;
if (!first) {
if (pfx) DEBUG_Printf(DBG_CHN_MESG, pfx);
DEBUG_Printf(DBG_CHN_MESG, " ");
rowcount = 3 + (pfx ? strlen(pfx) : 0);
first = 1;
}
len = strlen(entry.szModule);
if ((rowcount + len) > 76) {
DEBUG_Printf(DBG_CHN_MESG, "\n ");
rowcount = 3;
}
DEBUG_Printf(DBG_CHN_MESG, " %s", entry.szModule);
rowcount += len + 1;
DEBUG_LoadModule16(entry.hModule, &module, moduleAddr, entry.szModule);
} while (ModuleNext16(&entry));
#endif
if (first) DEBUG_Printf(DBG_CHN_MESG, "\n");
return first;
}
/***********************************************************************
* DEBUG_InfoShare
*
* Display shared libarary information.
*/
void DEBUG_InfoShare(void)
{
DBG_MODULE* wmod;
const char* xtype;
DEBUG_Printf(DBG_CHN_MESG, "Address\t\tModule\tName\n");
for (wmod = DEBUG_CurrProcess->modules; wmod; wmod = wmod->next) {
switch (wmod->type) {
case DM_TYPE_NE: xtype = "NE"; break;
case DM_TYPE_PE: xtype = "PE"; break;
case DM_TYPE_ELF: xtype = "ELF"; break;
default: xtype = "???"; break;
}
DEBUG_Printf(DBG_CHN_MESG, "0x%8.8x\t(%s)\t%s\n", (unsigned int)wmod->load_addr,
xtype, wmod->module_name);
}
}
static const char* DEBUG_GetModuleType(int type)
{
switch (type) {
case DM_TYPE_NE: return "NE";
case DM_TYPE_PE: return "PE";
case DM_TYPE_ELF: return "ELF";
default: return "???";;
}
}
static const char* DEBUG_GetModuleStatus(int status)
{
switch (status) {
case DM_STATUS_NEW: return "deferred";
case DM_STATUS_LOADED: return "ok";
case DM_STATUS_ERROR: return "error";
default: return "???";
}
}
/***********************************************************************
* DEBUG_
* Display information about a given module (DLL or EXE)
*/
void DEBUG_DumpModule(DWORD mod)
{
DBG_MODULE* wmod;
if (!(wmod = DEBUG_FindModuleByHandle(mod, DM_TYPE_UNKNOWN)) &&
!(wmod = DEBUG_FindModuleByAddr((void*)mod, DM_TYPE_UNKNOWN))) {
DEBUG_Printf(DBG_CHN_MESG, "'0x%08lx' is not a valid module handle or address\n", mod);
return;
}
DEBUG_Printf(DBG_CHN_MESG, "Module '%s' (handle=0x%08x) at 0x%8.8x (%s/%s)\n",
wmod->module_name, wmod->handle, (unsigned int)wmod->load_addr,
DEBUG_GetModuleType(wmod->type), DEBUG_GetModuleStatus(wmod->status));
}
/***********************************************************************
* DEBUG_WalkModules
*
* Display information about all modules (DLLs and EXEs)
*/
void DEBUG_WalkModules(void)
{
DBG_MODULE* wmod;
const char* xtype;
DEBUG_Printf(DBG_CHN_MESG, "Address\t\tModule\tName\n");
for (wmod = DEBUG_CurrProcess->modules; wmod; wmod = wmod->next) {
switch (wmod->type) {
case DM_TYPE_NE: xtype = "NE"; break;
case DM_TYPE_PE: xtype = "PE"; break;
case DM_TYPE_ELF: continue;
default: xtype = "???"; break;
}
DEBUG_Printf(DBG_CHN_MESG, "0x%8.8x\t(%s)\t%s\n",
(unsigned int)wmod->load_addr, DEBUG_GetModuleType(wmod->type),
wmod->module_name);
}
}
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