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_exports.cpp
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_exports.cpp
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/**
@file _exports.cpp
@brief Implements the exports class.
*/
#include "_exports.h"
#include "memory.h"
#include "debugger.h"
#include "value.h"
#include "threading.h"
#include "breakpoint.h"
#include "disasm_helper.h"
#include "simplescript.h"
#include "symbolinfo.h"
#include "assemble.h"
#include "stackinfo.h"
#include "thread.h"
#include "disasm_fast.h"
#include "plugin_loader.h"
#include "_dbgfunctions.h"
#include "module.h"
#include "comment.h"
#include "label.h"
#include "bookmark.h"
#include "function.h"
#include "loop.h"
#include "exception.h"
#include "x64dbg.h"
#include "xrefs.h"
#include "encodemap.h"
#include "argument.h"
#include "watch.h"
#include "animate.h"
#include "TraceRecord.h"
#include "recursiveanalysis.h"
#include "dbghelp_safe.h"
#include "symbolinfo.h"
static bool bOnlyCipAutoComments = false;
static bool bNoSourceLineAutoComments = false;
static TITAN_ENGINE_CONTEXT_t lastContext;
extern "C" DLL_EXPORT duint _dbg_memfindbaseaddr(duint addr, duint* size)
{
return MemFindBaseAddr(addr, size);
}
extern "C" DLL_EXPORT bool _dbg_memread(duint addr, unsigned char* dest, duint size, duint* read)
{
return MemRead(addr, dest, size, read);
}
extern "C" DLL_EXPORT bool _dbg_memwrite(duint addr, const unsigned char* src, duint size, duint* written)
{
return MemWrite(addr, src, size, written);
}
extern "C" DLL_EXPORT bool _dbg_memmap(MEMMAP* memmap)
{
SHARED_ACQUIRE(LockMemoryPages);
int pagecount = (int)memoryPages.size();
memmap->count = pagecount;
memmap->page = nullptr;
if(!pagecount)
return true;
// Allocate memory that is already zeroed
memmap->page = (MEMPAGE*)BridgeAlloc(sizeof(MEMPAGE) * pagecount);
// Copy all elements over
int i = 0;
for(auto & itr : memoryPages)
memcpy(&memmap->page[i++], &itr.second, sizeof(MEMPAGE));
// Done
return true;
}
extern "C" DLL_EXPORT bool _dbg_memisvalidreadptr(duint addr)
{
return MemIsValidReadPtr(addr, true);
}
extern "C" DLL_EXPORT bool _dbg_valfromstring(const char* string, duint* value)
{
return valfromstring(string, value);
}
extern "C" DLL_EXPORT bool _dbg_isdebugging()
{
return hDebugLoopThread && IsFileBeingDebugged();
}
extern "C" DLL_EXPORT bool _dbg_isjumpgoingtoexecute(duint addr)
{
if(!hActiveThread)
return false;
unsigned char data[16];
if(MemRead(addr, data, sizeof(data), nullptr, true))
{
Zydis zydis;
if(zydis.Disassemble(addr, data))
{
CONTEXT ctx;
memset(&ctx, 0, sizeof(ctx));
ctx.ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER;
GetThreadContext(hActiveThread, &ctx);
#ifdef _WIN64
auto cflags = ctx.EFlags;
auto ccx = ctx.Rcx;
#else
auto cflags = ctx.EFlags;
auto ccx = ctx.Ecx;
#endif //_WIN64
return zydis.IsBranchGoingToExecute(cflags, ccx);
}
}
return false;
}
static bool shouldFilterSymbol(const char* name)
{
if(!name)
return true;
if(strstr(name, "`string'"))
return true;
if(strstr(name, "__imp_") == name || strstr(name, "_imp_") == name)
return true;
PLUG_CB_FILTERSYMBOL filterInfo = { name, false };
plugincbcall(CB_FILTERSYMBOL, &filterInfo);
return filterInfo.retval;
}
// https://github.com/llvm-mirror/llvm/blob/2ae7de27f7d9276e7bada445ea7576bbc4c83ae6/lib/DebugInfo/Symbolize/Symbolize.cpp#L427
// https://github.com/x64dbg/x64dbg/pull/1478
// Undo these various manglings for Win32 extern "C" functions:
// cdecl - _foo
// stdcall - _foo@12
// fastcall - @foo@12
// vectorcall - foo@@12
// These are all different linkage names for 'foo'.
static char* demanglePE32ExternCFunc(char* SymbolName)
{
// Only do this for Win32
#ifdef _WIN64
return SymbolName;
#endif //_WIN64
// Don't try to demangle C++ names
char Front = SymbolName[0];
if(Front == '?')
return SymbolName;
// Remove any '_' or '@' prefix.
if(Front == '_' || Front == '@')
SymbolName++;
// Remove any '@[0-9]+' suffix.
auto AtPos = strrchr(SymbolName, '@');
if(AtPos)
{
auto p = AtPos + 1;
while(*p && isdigit(*p))
p++;
// All characters after '@' were digits
if(!*p)
*AtPos = '\0';
}
// Remove any ending '@' for vectorcall.
auto len = strlen(SymbolName);
if(len && SymbolName[len - 1] == '@')
SymbolName[len - 1] = '\0';
return SymbolName;
}
static bool getLabel(duint addr, char* label, bool noFuncOffset)
{
bool retval = false;
label[0] = 0;
if(LabelGet(addr, label))
return true;
else //no user labels
{
DWORD64 displacement = 0;
{
SYMBOLINFOCPP symInfo;
bool res;
if(noFuncOffset)
res = SymbolFromAddressExact(addr, &symInfo);
else
res = SymbolFromAddressExactOrLower(addr, &symInfo);
if(res)
{
displacement = (int32_t)(addr - symInfo.addr);
//auto name = demanglePE32ExternCFunc(symInfo.decoratedName.c_str());
if(bUndecorateSymbolNames && *symInfo.undecoratedSymbol != '\0')
strncpy_s(label, MAX_LABEL_SIZE, symInfo.undecoratedSymbol, _TRUNCATE);
else
strncpy_s(label, MAX_LABEL_SIZE, symInfo.decoratedSymbol, _TRUNCATE);
retval = !shouldFilterSymbol(label);
if(retval && displacement != 0)
{
char temp[32];
sprintf_s(temp, "+%llX", displacement);
strncat_s(label, MAX_LABEL_SIZE, temp, _TRUNCATE);
}
}
}
if(!retval) //search for CALL <jmp.&user32.MessageBoxA>
{
BASIC_INSTRUCTION_INFO basicinfo;
memset(&basicinfo, 0, sizeof(BASIC_INSTRUCTION_INFO));
if(disasmfast(addr, &basicinfo, true) && basicinfo.branch && !basicinfo.call && basicinfo.memory.value) //thing is a JMP
{
duint val = 0;
if(MemRead(basicinfo.memory.value, &val, sizeof(val), nullptr, true))
{
SYMBOLINFOCPP symInfo;
bool res;
if(noFuncOffset)
res = SymbolFromAddressExact(val, &symInfo);
else
res = SymbolFromAddressExactOrLower(val, &symInfo);
if(res)
{
//pSymbol->Name[pSymbol->MaxNameLen - 1] = '\0';
//auto name = demanglePE32ExternCFunc(pSymbol->Name);
if(bUndecorateSymbolNames && *symInfo.undecoratedSymbol != '\0')
_snprintf_s(label, MAX_LABEL_SIZE, _TRUNCATE, "JMP.&%s", symInfo.undecoratedSymbol);
else
_snprintf_s(label, MAX_LABEL_SIZE, _TRUNCATE, "JMP.&%s", symInfo.decoratedSymbol);
retval = !shouldFilterSymbol(label);
if(retval && displacement)
{
char temp[32];
sprintf_s(temp, "+%llX", displacement);
strncat_s(label, MAX_LABEL_SIZE, temp, _TRUNCATE);
}
}
}
}
}
if(!retval) //search for module entry
{
if(addr != 0 && ModEntryFromAddr(addr) == addr)
{
strcpy_s(label, MAX_LABEL_SIZE, "EntryPoint");
return true;
}
duint start;
if(FunctionGet(addr, &start, nullptr))
{
duint rva = addr - start;
if(rva == 0)
{
#ifdef _WIN64
sprintf_s(label, MAX_LABEL_SIZE, "sub_%llX", start);
#else //x86
sprintf_s(label, MAX_LABEL_SIZE, "sub_%X", start);
#endif //_WIN64
return true;
}
if(noFuncOffset)
return false;
getLabel(start, label, false);
char temp[32];
#ifdef _WIN64
sprintf_s(temp, "+%llX", rva);
#else //x86
sprintf_s(temp, "+%X", rva);
#endif //_WIN64
strncat_s(label, MAX_LABEL_SIZE, temp, _TRUNCATE);
return true;
}
}
}
return retval;
}
static bool getAutoComment(duint addr, String & comment)
{
bool retval = false;
duint disp;
char fileName[MAX_STRING_SIZE] = {};
int lineNumber = 0;
if(!bNoSourceLineAutoComments && SymGetSourceLine(addr, fileName, &lineNumber, &disp) && !disp)
{
char* actualName = fileName;
char* l = strrchr(fileName, '\\');
if(l)
actualName = l + 1;
comment = StringUtils::sprintf("%s:%u", actualName, lineNumber);
retval = true;
}
else
{
SHARED_ACQUIRE(LockModules);
auto modInfo = ModInfoFromAddr(addr);
if(modInfo != nullptr)
{
auto exportInfo = modInfo->findExport(addr - modInfo->base);
if(exportInfo != nullptr && exportInfo->forwarded)
{
comment = StringUtils::sprintf("-> %s", exportInfo->forwardName.c_str());
retval = true;
dputs(comment.c_str());
}
}
}
DISASM_INSTR instr;
String temp_string;
BRIDGE_ADDRINFO newinfo;
char string_text[MAX_STRING_SIZE] = "";
Zydis zydis;
auto getregs = !bOnlyCipAutoComments || addr == lastContext.cip;
disasmget(zydis, addr, &instr, getregs);
// Some nop variants have 'operands' that should be ignored
if(zydis.Success() && !zydis.IsNop())
{
//Ignore register values when not on CIP and OnlyCipAutoComments is enabled: https://github.com/x64dbg/x64dbg/issues/1383
if(!getregs)
{
for(int i = 0; i < instr.argcount; i++)
instr.arg[i].value = instr.arg[i].constant;
}
if(addr == lastContext.cip && (zydis.GetId() == ZYDIS_MNEMONIC_SYSCALL || (zydis.GetId() == ZYDIS_MNEMONIC_INT && zydis[0].imm.value.u == 0x2e)))
{
auto syscallName = SyscallToName((unsigned int)lastContext.cax);
if(!syscallName.empty())
{
if(!comment.empty())
{
comment.push_back(',');
comment.push_back(' ');
}
comment.append(syscallName);
retval = true;
}
}
for(int i = 0; i < instr.argcount; i++)
{
memset(&newinfo, 0, sizeof(BRIDGE_ADDRINFO));
newinfo.flags = flaglabel;
STRING_TYPE strtype = str_none;
if(instr.arg[i].constant == instr.arg[i].value) //avoid: call <module.label> ; addr:label
{
auto constant = instr.arg[i].constant;
if(instr.arg[i].type == arg_normal && instr.arg[i].value == addr + instr.instr_size && zydis.IsCall())
temp_string.assign("call $0");
else if(instr.arg[i].type == arg_normal && instr.arg[i].value == addr + instr.instr_size && zydis.IsJump())
temp_string.assign("jmp $0");
else if(instr.type == instr_branch)
continue;
else if(instr.arg[i].type == arg_normal && constant < 256 && (isprint(int(constant)) || isspace(int(constant))) && (strstr(instr.instruction, "cmp") || strstr(instr.instruction, "mov")))
{
temp_string.assign(instr.arg[i].mnemonic);
temp_string.push_back(':');
temp_string.push_back('\'');
temp_string.append(StringUtils::Escape((unsigned char)constant));
temp_string.push_back('\'');
}
else if(DbgGetStringAt(instr.arg[i].constant, string_text))
{
temp_string.assign(instr.arg[i].mnemonic);
temp_string.push_back(':');
temp_string.append(string_text);
}
}
else if(instr.arg[i].memvalue && (DbgGetStringAt(instr.arg[i].memvalue, string_text) || _dbg_addrinfoget(instr.arg[i].memvalue, instr.arg[i].segment, &newinfo)))
{
if(*string_text)
{
temp_string.assign("[");
temp_string.append(instr.arg[i].mnemonic);
temp_string.push_back(']');
temp_string.push_back(':');
temp_string.append(string_text);
}
else if(*newinfo.label)
{
temp_string.assign("[");
temp_string.append(instr.arg[i].mnemonic);
temp_string.push_back(']');
temp_string.push_back(':');
temp_string.append(newinfo.label);
}
}
else if(instr.arg[i].value && (DbgGetStringAt(instr.arg[i].value, string_text) || _dbg_addrinfoget(instr.arg[i].value, instr.arg[i].segment, &newinfo)))
{
if(instr.type != instr_normal) //stack/jumps (eg add esp, 4 or jmp 401110) cannot directly point to strings
{
if(*newinfo.label)
{
temp_string = instr.arg[i].mnemonic;
temp_string.push_back(':');
temp_string.append(newinfo.label);
}
}
else if(*string_text)
{
temp_string = instr.arg[i].mnemonic;
temp_string.push_back(':');
temp_string.append(string_text);
}
else if(*newinfo.label)
{
temp_string = instr.arg[i].mnemonic;
temp_string.push_back(':');
temp_string.append(newinfo.label);
}
}
else
continue;
if(!strstr(comment.c_str(), temp_string.c_str())) //avoid duplicate comments
{
if(!comment.empty())
{
comment.push_back(',');
comment.push_back(' ');
}
comment.append(temp_string);
retval = true;
}
}
}
BREAKPOINT bp;
// Add autocomment for breakpoints with BreakpointsView format because there's usually something useful
if(BpGet(addr, BPNORMAL, nullptr, &bp) || BpGet(addr, BPHARDWARE, nullptr, &bp))
{
temp_string.clear();
auto next = [&temp_string]()
{
if(!temp_string.empty())
temp_string += ", ";
};
if(*bp.breakCondition)
{
next();
temp_string += GuiTranslateText(QT_TRANSLATE_NOOP("DBG", "breakif"));
temp_string += "(";
temp_string += bp.breakCondition;
temp_string += ")";
}
if(bp.fastResume)
{
next();
temp_string += GuiTranslateText(QT_TRANSLATE_NOOP("DBG", "fastresume()"));
}
else //fast resume skips all other steps
{
if(*bp.logText)
{
next();
if(*bp.logCondition)
{
temp_string += GuiTranslateText(QT_TRANSLATE_NOOP("DBG", "logif"));
temp_string += "(";
temp_string += bp.logCondition;
temp_string += ", ";
}
else
{
temp_string += GuiTranslateText(QT_TRANSLATE_NOOP("DBG", "log"));
temp_string += "(";
}
temp_string += bp.logText;
temp_string += ")";
}
if(*bp.commandText)
{
next();
if(*bp.commandCondition)
{
temp_string += GuiTranslateText(QT_TRANSLATE_NOOP("DBG", "cmdif"));
temp_string += "(";
temp_string += bp.commandCondition;
temp_string += ", ";
}
else
{
temp_string += GuiTranslateText(QT_TRANSLATE_NOOP("DBG", "cmd"));
temp_string += "(";
}
temp_string += bp.commandText;
temp_string += ")";
}
}
if(!temp_string.empty())
{
if(!comment.empty())
{
comment.push_back(',');
comment.push_back(' ');
}
comment.append(temp_string);
retval = true;
}
}
StringUtils::ReplaceAll(comment, "{", "{{");
StringUtils::ReplaceAll(comment, "}", "}}");
return retval;
}
extern "C" DLL_EXPORT bool _dbg_addrinfoget(duint addr, SEGMENTREG segment, BRIDGE_ADDRINFO* addrinfo)
{
if(!DbgIsDebugging())
return false;
bool retval = false;
if(addrinfo->flags & flagmodule) //get module
{
if(ModNameFromAddr(addr, addrinfo->module, false)) //get module name
retval = true;
}
if(addrinfo->flags & flaglabel)
{
retval = getLabel(addr, addrinfo->label, (addrinfo->flags & flagNoFuncOffset) != 0);
}
if(addrinfo->flags & flagbookmark)
{
addrinfo->isbookmark = BookmarkGet(addr);
retval = true;
}
if(addrinfo->flags & flagfunction)
{
if(FunctionGet(addr, &addrinfo->function.start, &addrinfo->function.end, &addrinfo->function.instrcount))
retval = true;
}
if(addrinfo->flags & flagloop)
{
if(LoopGet(addrinfo->loop.depth, addr, &addrinfo->loop.start, &addrinfo->loop.end, &addrinfo->loop.instrcount))
retval = true;
}
if(addrinfo->flags & flagargs)
{
if(ArgumentGet(addr, &addrinfo->args.start, &addrinfo->args.end, &addrinfo->function.instrcount))
retval = true;
}
if(addrinfo->flags & flagcomment)
{
*addrinfo->comment = 0;
if(CommentGet(addr, addrinfo->comment))
{
retval = true;
}
else
{
String comment;
retval = getAutoComment(addr, comment);
strcpy_s(addrinfo->comment, "\1");
strncat_s(addrinfo->comment, comment.c_str(), _TRUNCATE);
}
}
PLUG_CB_ADDRINFO info;
info.addr = addr;
info.addrinfo = addrinfo;
info.retval = retval;
plugincbcall(CB_ADDRINFO, &info);
return info.retval;
}
extern "C" DLL_EXPORT bool _dbg_addrinfoset(duint addr, BRIDGE_ADDRINFO* addrinfo)
{
bool retval = false;
if(addrinfo->flags & flaglabel) //set label
{
if(LabelSet(addr, addrinfo->label, true))
retval = true;
}
if(addrinfo->flags & flagcomment) //set comment
{
if(CommentSet(addr, addrinfo->comment, true))
retval = true;
}
if(addrinfo->flags & flagbookmark) //set bookmark
{
if(addrinfo->isbookmark)
retval = BookmarkSet(addr, true);
else
retval = BookmarkDelete(addr);
}
return retval;
}
extern "C" DLL_EXPORT bool _dbg_encodetypeset(duint addr, duint size, ENCODETYPE type)
{
return EncodeMapSetType(addr, size, type);
}
extern "C" DLL_EXPORT PROCESS_INFORMATION* _dbg_getProcessInformation()
{
return fdProcessInfo;
}
extern "C" DLL_EXPORT int _dbg_bpgettypeat(duint addr)
{
static duint cacheAddr;
static int cacheBpCount;
static int cacheResult;
int bpcount = BpGetList(nullptr);
if(cacheAddr != addr || cacheBpCount != bpcount)
{
BREAKPOINT bp;
cacheAddr = addr;
cacheResult = 0;
cacheBpCount = bpcount;
if(BpGet(addr, BPNORMAL, 0, &bp))
if(bp.enabled)
cacheResult |= bp_normal;
if(BpGet(addr, BPHARDWARE, 0, &bp))
if(bp.enabled)
cacheResult |= bp_hardware;
if(BpGet(addr, BPMEMORY, 0, &bp))
if(bp.enabled)
cacheResult |= bp_memory;
}
return cacheResult;
}
static void GetMxCsrFields(MXCSRFIELDS* MxCsrFields, DWORD MxCsr)
{
MxCsrFields->DAZ = valmxcsrflagfromstring(MxCsr, "DAZ");
MxCsrFields->DE = valmxcsrflagfromstring(MxCsr, "DE");
MxCsrFields->FZ = valmxcsrflagfromstring(MxCsr, "FZ");
MxCsrFields->IE = valmxcsrflagfromstring(MxCsr, "IE");
MxCsrFields->IM = valmxcsrflagfromstring(MxCsr, "IM");
MxCsrFields->DM = valmxcsrflagfromstring(MxCsr, "DM");
MxCsrFields->OE = valmxcsrflagfromstring(MxCsr, "OE");
MxCsrFields->OM = valmxcsrflagfromstring(MxCsr, "OM");
MxCsrFields->PE = valmxcsrflagfromstring(MxCsr, "PE");
MxCsrFields->PM = valmxcsrflagfromstring(MxCsr, "PM");
MxCsrFields->UE = valmxcsrflagfromstring(MxCsr, "UE");
MxCsrFields->UM = valmxcsrflagfromstring(MxCsr, "UM");
MxCsrFields->ZE = valmxcsrflagfromstring(MxCsr, "ZE");
MxCsrFields->ZM = valmxcsrflagfromstring(MxCsr, "ZM");
MxCsrFields->RC = valmxcsrfieldfromstring(MxCsr, "RC");
}
static void Getx87ControlWordFields(X87CONTROLWORDFIELDS* x87ControlWordFields, WORD ControlWord)
{
x87ControlWordFields->DM = valx87controlwordflagfromstring(ControlWord, "DM");
x87ControlWordFields->IC = valx87controlwordflagfromstring(ControlWord, "IC");
x87ControlWordFields->IEM = valx87controlwordflagfromstring(ControlWord, "IEM");
x87ControlWordFields->IM = valx87controlwordflagfromstring(ControlWord, "IM");
x87ControlWordFields->OM = valx87controlwordflagfromstring(ControlWord, "OM");
x87ControlWordFields->PM = valx87controlwordflagfromstring(ControlWord, "PM");
x87ControlWordFields->UM = valx87controlwordflagfromstring(ControlWord, "UM");
x87ControlWordFields->ZM = valx87controlwordflagfromstring(ControlWord, "ZM");
x87ControlWordFields->RC = valx87controlwordfieldfromstring(ControlWord, "RC");
x87ControlWordFields->PC = valx87controlwordfieldfromstring(ControlWord, "PC");
}
static void Getx87StatusWordFields(X87STATUSWORDFIELDS* x87StatusWordFields, WORD StatusWord)
{
x87StatusWordFields->B = valx87statuswordflagfromstring(StatusWord, "B");
x87StatusWordFields->C0 = valx87statuswordflagfromstring(StatusWord, "C0");
x87StatusWordFields->C1 = valx87statuswordflagfromstring(StatusWord, "C1");
x87StatusWordFields->C2 = valx87statuswordflagfromstring(StatusWord, "C2");
x87StatusWordFields->C3 = valx87statuswordflagfromstring(StatusWord, "C3");
x87StatusWordFields->D = valx87statuswordflagfromstring(StatusWord, "D");
x87StatusWordFields->I = valx87statuswordflagfromstring(StatusWord, "I");
x87StatusWordFields->ES = valx87statuswordflagfromstring(StatusWord, "ES");
x87StatusWordFields->O = valx87statuswordflagfromstring(StatusWord, "O");
x87StatusWordFields->P = valx87statuswordflagfromstring(StatusWord, "P");
x87StatusWordFields->SF = valx87statuswordflagfromstring(StatusWord, "SF");
x87StatusWordFields->U = valx87statuswordflagfromstring(StatusWord, "U");
x87StatusWordFields->Z = valx87statuswordflagfromstring(StatusWord, "Z");
x87StatusWordFields->TOP = valx87statuswordfieldfromstring(StatusWord, "TOP");
}
static void TranslateTitanFpu(const x87FPU_t* titanfpu, X87FPU* fpu)
{
fpu->ControlWord = titanfpu->ControlWord;
fpu->StatusWord = titanfpu->StatusWord;
fpu->TagWord = titanfpu->TagWord;
fpu->ErrorOffset = titanfpu->ErrorOffset;
fpu->ErrorSelector = titanfpu->ErrorSelector;
fpu->DataOffset = titanfpu->DataOffset;
fpu->DataSelector = titanfpu->DataSelector;
fpu->Cr0NpxState = titanfpu->Cr0NpxState;
}
static void TranslateTitanContextToRegContext(const TITAN_ENGINE_CONTEXT_t* titcontext, REGISTERCONTEXT* regcontext)
{
regcontext->cax = titcontext->cax;
regcontext->ccx = titcontext->ccx;
regcontext->cdx = titcontext->cdx;
regcontext->cbx = titcontext->cbx;
regcontext->csp = titcontext->csp;
regcontext->cbp = titcontext->cbp;
regcontext->csi = titcontext->csi;
regcontext->cdi = titcontext->cdi;
#ifdef _WIN64
regcontext->r8 = titcontext->r8;
regcontext->r9 = titcontext->r9;
regcontext->r10 = titcontext->r10;
regcontext->r11 = titcontext->r11;
regcontext->r12 = titcontext->r12;
regcontext->r13 = titcontext->r13;
regcontext->r14 = titcontext->r14;
regcontext->r15 = titcontext->r15;
#endif //_WIN64
regcontext->cip = titcontext->cip;
regcontext->eflags = titcontext->eflags;
regcontext->gs = titcontext->gs;
regcontext->fs = titcontext->fs;
regcontext->es = titcontext->es;
regcontext->ds = titcontext->ds;
regcontext->cs = titcontext->cs;
regcontext->ss = titcontext->ss;
regcontext->dr0 = titcontext->dr0;
regcontext->dr1 = titcontext->dr1;
regcontext->dr2 = titcontext->dr2;
regcontext->dr3 = titcontext->dr3;
regcontext->dr6 = titcontext->dr6;
regcontext->dr7 = titcontext->dr7;
memcpy(regcontext->RegisterArea, titcontext->RegisterArea, sizeof(regcontext->RegisterArea));
TranslateTitanFpu(&titcontext->x87fpu, ®context->x87fpu);
regcontext->MxCsr = titcontext->MxCsr;
memcpy(regcontext->XmmRegisters, titcontext->XmmRegisters, sizeof(regcontext->XmmRegisters));
memcpy(regcontext->YmmRegisters, titcontext->YmmRegisters, sizeof(regcontext->YmmRegisters));
}
static void TranslateTitanFpuRegister(const x87FPURegister_t* titanReg, X87FPUREGISTER* reg)
{
memcpy(reg->data, titanReg->data, sizeof(reg->data));
reg->st_value = titanReg->st_value;
reg->tag = titanReg->tag;
}
static void TranslateTitanFpuRegisters(const x87FPURegister_t titanFpu[8], X87FPUREGISTER fpu[8])
{
for(int i = 0; i < 8; i++)
TranslateTitanFpuRegister(&titanFpu[i], &fpu[i]);
}
extern "C" DLL_EXPORT bool _dbg_getregdump(REGDUMP* regdump)
{
if(!DbgIsDebugging())
{
memset(regdump, 0, sizeof(REGDUMP));
return true;
}
TITAN_ENGINE_CONTEXT_t titcontext;
if(!GetFullContextDataEx(hActiveThread, &titcontext))
return false;
// NOTE: this is not thread-safe, but that's fine because lastContext is only used for GUI-related operations
memcpy(&lastContext, &titcontext, sizeof(titcontext));
TranslateTitanContextToRegContext(&titcontext, ®dump->regcontext);
duint cflags = regdump->regcontext.eflags;
regdump->flags.c = (cflags & (1 << 0)) != 0;
regdump->flags.p = (cflags & (1 << 2)) != 0;
regdump->flags.a = (cflags & (1 << 4)) != 0;
regdump->flags.z = (cflags & (1 << 6)) != 0;
regdump->flags.s = (cflags & (1 << 7)) != 0;
regdump->flags.t = (cflags & (1 << 8)) != 0;
regdump->flags.i = (cflags & (1 << 9)) != 0;
regdump->flags.d = (cflags & (1 << 10)) != 0;
regdump->flags.o = (cflags & (1 << 11)) != 0;
x87FPURegister_t x87FPURegisters[8];
Getx87FPURegisters(x87FPURegisters, &titcontext);
TranslateTitanFpuRegisters(x87FPURegisters, regdump->x87FPURegisters);
GetMMXRegisters(regdump->mmx, &titcontext);
GetMxCsrFields(& (regdump->MxCsrFields), regdump->regcontext.MxCsr);
Getx87ControlWordFields(& (regdump->x87ControlWordFields), regdump->regcontext.x87fpu.ControlWord);
Getx87StatusWordFields(& (regdump->x87StatusWordFields), regdump->regcontext.x87fpu.StatusWord);
LASTERROR lastError;
memset(&lastError.name, 0, sizeof(lastError.name));
lastError.code = ThreadGetLastError(ThreadGetId(hActiveThread));
strncpy_s(lastError.name, ErrorCodeToName(lastError.code).c_str(), _TRUNCATE);
regdump->lastError = lastError;
LASTSTATUS lastStatus;
memset(&lastStatus.name, 0, sizeof(lastStatus.name));
lastStatus.code = ThreadGetLastStatus(ThreadGetId(hActiveThread));
strncpy_s(lastStatus.name, NtStatusCodeToName(lastStatus.code).c_str(), _TRUNCATE);
regdump->lastStatus = lastStatus;
return true;
}
extern "C" DLL_EXPORT bool _dbg_valtostring(const char* string, duint value)
{
return valtostring(string, value, true);
}
extern "C" DLL_EXPORT int _dbg_getbplist(BPXTYPE type, BPMAP* bpmap)
{
if(!bpmap)
return 0;
bpmap->count = 0;
bpmap->bp = nullptr;
std::vector<BREAKPOINT> list;
int bpcount = BpGetList(&list);
if(bpcount == 0)
return 0;
int retcount = 0;
std::vector<BRIDGEBP> bridgeList;
BRIDGEBP curBp;
BP_TYPE currentBpType;
switch(type)
{
case bp_none:
currentBpType = BP_TYPE(-1);
break;
case bp_normal:
currentBpType = BPNORMAL;
break;
case bp_hardware:
currentBpType = BPHARDWARE;
break;
case bp_memory:
currentBpType = BPMEMORY;
break;
case bp_dll:
currentBpType = BPDLL;
break;
case bp_exception:
currentBpType = BPEXCEPTION;
break;
default:
return 0;
}
unsigned short slot = 0;
for(int i = 0; i < bpcount; i++)
{
if(currentBpType != -1 && list[i].type != currentBpType)
continue;
BpToBridge(&list[i], &curBp);
bridgeList.push_back(curBp);
retcount++;
}
if(!retcount)
return 0;
bpmap->count = retcount;
bpmap->bp = (BRIDGEBP*)BridgeAlloc(sizeof(BRIDGEBP) * retcount);
for(int i = 0; i < retcount; i++)
memcpy(&bpmap->bp[i], &bridgeList.at(i), sizeof(BRIDGEBP));
return retcount;
}
extern "C" DLL_EXPORT duint _dbg_getbranchdestination(duint addr)
{
unsigned char data[MAX_DISASM_BUFFER];
if(!MemIsValidReadPtr(addr, true) || !MemRead(addr, data, sizeof(data)))
return 0;
Zydis zydis;
if(!zydis.Disassemble(addr, data))
return 0;
if(zydis.IsBranchType(Zydis::BTJmp | Zydis::BTCall | Zydis::BTLoop | Zydis::BTXbegin))
{
auto opValue = (duint)zydis.ResolveOpValue(0, [](ZydisRegister reg) -> uint64_t
{
switch(reg)
{
#ifndef _WIN64 //x32
case ZYDIS_REGISTER_EAX:
return lastContext.cax;
case ZYDIS_REGISTER_EBX:
return lastContext.cbx;
case ZYDIS_REGISTER_ECX:
return lastContext.ccx;
case ZYDIS_REGISTER_EDX:
return lastContext.cdx;
case ZYDIS_REGISTER_EBP:
return lastContext.cbp;
case ZYDIS_REGISTER_ESP:
return lastContext.csp;
case ZYDIS_REGISTER_ESI:
return lastContext.csi;
case ZYDIS_REGISTER_EDI:
return lastContext.cdi;
case ZYDIS_REGISTER_EIP:
return lastContext.cip;
#else //x64
case ZYDIS_REGISTER_RAX:
return lastContext.cax;
case ZYDIS_REGISTER_RBX:
return lastContext.cbx;
case ZYDIS_REGISTER_RCX:
return lastContext.ccx;
case ZYDIS_REGISTER_RDX:
return lastContext.cdx;
case ZYDIS_REGISTER_RBP:
return lastContext.cbp;
case ZYDIS_REGISTER_RSP:
return lastContext.csp;
case ZYDIS_REGISTER_RSI:
return lastContext.csi;
case ZYDIS_REGISTER_RDI:
return lastContext.cdi;
case ZYDIS_REGISTER_RIP:
return lastContext.cip;
case ZYDIS_REGISTER_R8:
return lastContext.r8;
case ZYDIS_REGISTER_R9:
return lastContext.r9;
case ZYDIS_REGISTER_R10:
return lastContext.r10;
case ZYDIS_REGISTER_R11:
return lastContext.r11;
case ZYDIS_REGISTER_R12:
return lastContext.r12;
case ZYDIS_REGISTER_R13:
return lastContext.r13;
case ZYDIS_REGISTER_R14:
return lastContext.r14;
case ZYDIS_REGISTER_R15:
return lastContext.r15;
#endif //_WIN64
default:
return 0;
}
});
if(zydis.OpCount() && zydis[0].type == ZYDIS_OPERAND_TYPE_MEMORY)
{
auto const tebseg = ArchValue(ZYDIS_REGISTER_FS, ZYDIS_REGISTER_GS);
if(zydis[0].mem.segment == tebseg)
opValue += duint(GetTEBLocation(hActiveThread));
if(MemRead(opValue, &opValue, sizeof(opValue)))
return opValue;
}
else
return opValue;
}
if(zydis.IsRet())
{
auto csp = lastContext.csp;
duint dest = 0;
if(MemRead(csp, &dest, sizeof(dest)))
return dest;
}
return 0;
}
extern "C" DLL_EXPORT bool _dbg_functionoverlaps(duint start, duint end)
{
return FunctionOverlaps(start, end);
}
extern "C" DLL_EXPORT duint _dbg_sendmessage(DBGMSG type, void* param1, void* param2)
{
if(dbgisstopped())
{
switch(type) //ignore win events
{
//these functions are safe to call when we did not initialize yet
case DBG_DEINITIALIZE_LOCKS:
case DBG_INITIALIZE_LOCKS:
case DBG_GET_FUNCTIONS:
case DBG_SETTINGS_UPDATED:
case DBG_GET_THREAD_LIST:
case DBG_WIN_EVENT:
case DBG_WIN_EVENT_GLOBAL:
case DBG_RELEASE_ENCODE_TYPE_BUFFER:
case DBG_GET_TIME_WASTED_COUNTER:
case DBG_GET_DEBUG_ENGINE:
break;
//the rest is unsafe -> throw an exception when people try to call them
default:
__debugbreak(); //we cannot process messages when the debugger is stopped, this must be a bug
}
}