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callingconvention.cpp
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506 lines (378 loc) · 13.3 KB
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// Copyright (c) 2015-2021 Vector 35 Inc
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
#include "binaryninjaapi.h"
using namespace std;
using namespace BinaryNinja;
CallingConvention::CallingConvention(BNCallingConvention* cc)
{
m_object = cc;
}
CallingConvention::CallingConvention(Architecture* arch, const string& name)
{
BNCustomCallingConvention cc;
cc.context = this;
cc.freeObject = FreeCallback;
cc.getCallerSavedRegisters = GetCallerSavedRegistersCallback;
cc.getCalleeSavedRegisters = GetCalleeSavedRegistersCallback;
cc.getIntegerArgumentRegisters = GetIntegerArgumentRegistersCallback;
cc.getFloatArgumentRegisters = GetFloatArgumentRegistersCallback;
cc.freeRegisterList = FreeRegisterListCallback;
cc.areArgumentRegistersSharedIndex = AreArgumentRegistersSharedIndexCallback;
cc.areArgumentRegistersUsedForVarArgs = AreArgumentRegistersUsedForVarArgsCallback;
cc.isStackReservedForArgumentRegisters = IsStackReservedForArgumentRegistersCallback;
cc.isStackAdjustedOnReturn = IsStackAdjustedOnReturnCallback;
cc.isEligibleForHeuristics = IsEligibleForHeuristicsCallback;
cc.getIntegerReturnValueRegister = GetIntegerReturnValueRegisterCallback;
cc.getHighIntegerReturnValueRegister = GetHighIntegerReturnValueRegisterCallback;
cc.getFloatReturnValueRegister = GetFloatReturnValueRegisterCallback;
cc.getGlobalPointerRegister = GetGlobalPointerRegisterCallback;
cc.getImplicitlyDefinedRegisters = GetImplicitlyDefinedRegistersCallback;
cc.getIncomingRegisterValue = GetIncomingRegisterValueCallback;
cc.getIncomingFlagValue = GetIncomingFlagValueCallback;
cc.getIncomingVariableForParameterVariable = GetIncomingVariableForParameterVariableCallback;
cc.getParameterVariableForIncomingVariable = GetParameterVariableForIncomingVariableCallback;
AddRefForRegistration();
m_object = BNCreateCallingConvention(arch->GetObject(), name.c_str(), &cc);
}
void CallingConvention::FreeCallback(void* ctxt)
{
CallingConvention* cc = (CallingConvention*)ctxt;
cc->ReleaseForRegistration();
}
uint32_t* CallingConvention::GetCallerSavedRegistersCallback(void* ctxt, size_t* count)
{
CallingConvention* cc = (CallingConvention*)ctxt;
vector<uint32_t> regs = cc->GetCallerSavedRegisters();
*count = regs.size();
uint32_t* result = new uint32_t[regs.size()];
for (size_t i = 0; i < regs.size(); i++)
result[i] = regs[i];
return result;
}
uint32_t* CallingConvention::GetCalleeSavedRegistersCallback(void* ctxt, size_t* count)
{
CallingConvention* cc = (CallingConvention*)ctxt;
vector<uint32_t> regs = cc->GetCalleeSavedRegisters();
*count = regs.size();
uint32_t* result = new uint32_t[regs.size()];
for (size_t i = 0; i < regs.size(); i++)
result[i] = regs[i];
return result;
}
uint32_t* CallingConvention::GetIntegerArgumentRegistersCallback(void* ctxt, size_t* count)
{
CallingConvention* cc = (CallingConvention*)ctxt;
vector<uint32_t> regs = cc->GetIntegerArgumentRegisters();
*count = regs.size();
uint32_t* result = new uint32_t[regs.size()];
for (size_t i = 0; i < regs.size(); i++)
result[i] = regs[i];
return result;
}
uint32_t* CallingConvention::GetFloatArgumentRegistersCallback(void* ctxt, size_t* count)
{
CallingConvention* cc = (CallingConvention*)ctxt;
vector<uint32_t> regs = cc->GetFloatArgumentRegisters();
*count = regs.size();
uint32_t* result = new uint32_t[regs.size()];
for (size_t i = 0; i < regs.size(); i++)
result[i] = regs[i];
return result;
}
void CallingConvention::FreeRegisterListCallback(void*, uint32_t* regs)
{
delete[] regs;
}
bool CallingConvention::AreArgumentRegistersSharedIndexCallback(void* ctxt)
{
CallingConvention* cc = (CallingConvention*)ctxt;
return cc->AreArgumentRegistersSharedIndex();
}
bool CallingConvention::AreArgumentRegistersUsedForVarArgsCallback(void* ctxt)
{
CallingConvention* cc = (CallingConvention*)ctxt;
return cc->AreArgumentRegistersUsedForVarArgs();
}
bool CallingConvention::IsStackReservedForArgumentRegistersCallback(void* ctxt)
{
CallingConvention* cc = (CallingConvention*)ctxt;
return cc->IsStackReservedForArgumentRegisters();
}
bool CallingConvention::IsStackAdjustedOnReturnCallback(void* ctxt)
{
CallingConvention* cc = (CallingConvention*)ctxt;
return cc->IsStackAdjustedOnReturn();
}
bool CallingConvention::IsEligibleForHeuristicsCallback(void* ctxt)
{
CallingConvention* cc = (CallingConvention*)ctxt;
return cc->IsEligibleForHeuristics();
}
uint32_t CallingConvention::GetIntegerReturnValueRegisterCallback(void* ctxt)
{
CallingConvention* cc = (CallingConvention*)ctxt;
return cc->GetIntegerReturnValueRegister();
}
uint32_t CallingConvention::GetHighIntegerReturnValueRegisterCallback(void* ctxt)
{
CallingConvention* cc = (CallingConvention*)ctxt;
return cc->GetHighIntegerReturnValueRegister();
}
uint32_t CallingConvention::GetFloatReturnValueRegisterCallback(void* ctxt)
{
CallingConvention* cc = (CallingConvention*)ctxt;
return cc->GetFloatReturnValueRegister();
}
uint32_t CallingConvention::GetGlobalPointerRegisterCallback(void* ctxt)
{
CallingConvention* cc = (CallingConvention*)ctxt;
return cc->GetGlobalPointerRegister();
}
uint32_t* CallingConvention::GetImplicitlyDefinedRegistersCallback(void* ctxt, size_t* count)
{
CallingConvention* cc = (CallingConvention*)ctxt;
vector<uint32_t> regs = cc->GetImplicitlyDefinedRegisters();
*count = regs.size();
uint32_t* result = new uint32_t[regs.size()];
for (size_t i = 0; i < regs.size(); i++)
result[i] = regs[i];
return result;
}
void CallingConvention::GetIncomingRegisterValueCallback(void* ctxt, uint32_t reg, BNFunction* func, BNRegisterValue* result)
{
CallingConvention* cc = (CallingConvention*)ctxt;
Ref<Function> funcObj;
if (func)
funcObj = new Function(BNNewFunctionReference(func));
*result = cc->GetIncomingRegisterValue(reg, funcObj).ToAPIObject();
}
void CallingConvention::GetIncomingFlagValueCallback(void* ctxt, uint32_t reg, BNFunction* func, BNRegisterValue* result)
{
CallingConvention* cc = (CallingConvention*)ctxt;
Ref<Function> funcObj;
if (func)
funcObj = new Function(BNNewFunctionReference(func));
*result = cc->GetIncomingFlagValue(reg, funcObj).ToAPIObject();
}
void CallingConvention::GetIncomingVariableForParameterVariableCallback(void* ctxt, const BNVariable* var,
BNFunction* func, BNVariable* result)
{
CallingConvention* cc = (CallingConvention*)ctxt;
Ref<Function> funcObj;
if (func)
funcObj = new Function(BNNewFunctionReference(func));
*result = cc->GetIncomingVariableForParameterVariable(*var, funcObj);
}
void CallingConvention::GetParameterVariableForIncomingVariableCallback(void* ctxt, const BNVariable* var,
BNFunction* func, BNVariable* result)
{
CallingConvention* cc = (CallingConvention*)ctxt;
Ref<Function> funcObj;
if (func)
funcObj = new Function(BNNewFunctionReference(func));
*result = cc->GetParameterVariableForIncomingVariable(*var, funcObj);
}
Ref<Architecture> CallingConvention::GetArchitecture() const
{
return new CoreArchitecture(BNGetCallingConventionArchitecture(m_object));
}
string CallingConvention::GetName() const
{
char* str = BNGetCallingConventionName(m_object);
string result = str;
BNFreeString(str);
return result;
}
vector<uint32_t> CallingConvention::GetCallerSavedRegisters()
{
return vector<uint32_t>();
}
vector<uint32_t> CallingConvention::GetCalleeSavedRegisters()
{
return vector<uint32_t>();
}
vector<uint32_t> CallingConvention::GetIntegerArgumentRegisters()
{
return vector<uint32_t>();
}
vector<uint32_t> CallingConvention::GetFloatArgumentRegisters()
{
return vector<uint32_t>();
}
bool CallingConvention::AreArgumentRegistersSharedIndex()
{
return false;
}
bool CallingConvention::AreArgumentRegistersUsedForVarArgs()
{
return true;
}
bool CallingConvention::IsStackReservedForArgumentRegisters()
{
return false;
}
bool CallingConvention::IsStackAdjustedOnReturn()
{
return false;
}
bool CallingConvention::IsEligibleForHeuristics()
{
return true;
}
uint32_t CallingConvention::GetHighIntegerReturnValueRegister()
{
return BN_INVALID_REGISTER;
}
uint32_t CallingConvention::GetFloatReturnValueRegister()
{
return BN_INVALID_REGISTER;
}
uint32_t CallingConvention::GetGlobalPointerRegister()
{
return BN_INVALID_REGISTER;
}
vector<uint32_t> CallingConvention::GetImplicitlyDefinedRegisters()
{
return vector<uint32_t>();
}
RegisterValue CallingConvention::GetIncomingRegisterValue(uint32_t reg, Function*)
{
uint32_t regStack = GetArchitecture()->GetRegisterStackForRegister(reg);
if ((regStack != BN_INVALID_REGISTER) && (reg == GetArchitecture()->GetRegisterStackInfo(regStack).stackTopReg))
{
RegisterValue value;
value.state = ConstantValue;
value.value = 0;
return value;
}
return RegisterValue();
}
RegisterValue CallingConvention::GetIncomingFlagValue(uint32_t, Function*)
{
return RegisterValue();
}
Variable CallingConvention::GetIncomingVariableForParameterVariable(const Variable& var, Function*)
{
return BNGetDefaultIncomingVariableForParameterVariable(m_object, &var);
}
Variable CallingConvention::GetParameterVariableForIncomingVariable(const Variable& var, Function*)
{
return BNGetDefaultParameterVariableForIncomingVariable(m_object, &var);
}
CoreCallingConvention::CoreCallingConvention(BNCallingConvention* cc): CallingConvention(cc)
{
}
vector<uint32_t> CoreCallingConvention::GetCallerSavedRegisters()
{
size_t count;
uint32_t* regs = BNGetCallerSavedRegisters(m_object, &count);
vector<uint32_t> result;
result.insert(result.end(), regs, ®s[count]);
BNFreeRegisterList(regs);
return result;
}
vector<uint32_t> CoreCallingConvention::GetCalleeSavedRegisters()
{
size_t count;
uint32_t* regs = BNGetCalleeSavedRegisters(m_object, &count);
vector<uint32_t> result;
result.insert(result.end(), regs, ®s[count]);
BNFreeRegisterList(regs);
return result;
}
vector<uint32_t> CoreCallingConvention::GetIntegerArgumentRegisters()
{
size_t count;
uint32_t* regs = BNGetIntegerArgumentRegisters(m_object, &count);
vector<uint32_t> result;
result.insert(result.end(), regs, ®s[count]);
BNFreeRegisterList(regs);
return result;
}
vector<uint32_t> CoreCallingConvention::GetFloatArgumentRegisters()
{
size_t count;
uint32_t* regs = BNGetFloatArgumentRegisters(m_object, &count);
vector<uint32_t> result;
result.insert(result.end(), regs, ®s[count]);
BNFreeRegisterList(regs);
return result;
}
bool CoreCallingConvention::AreArgumentRegistersSharedIndex()
{
return BNAreArgumentRegistersSharedIndex(m_object);
}
bool CoreCallingConvention::AreArgumentRegistersUsedForVarArgs()
{
return BNAreArgumentRegistersUsedForVarArgs(m_object);
}
bool CoreCallingConvention::IsStackReservedForArgumentRegisters()
{
return BNIsStackReservedForArgumentRegisters(m_object);
}
bool CoreCallingConvention::IsStackAdjustedOnReturn()
{
return BNIsStackAdjustedOnReturn(m_object);
}
bool CoreCallingConvention::IsEligibleForHeuristics()
{
return BNIsEligibleForHeuristics(m_object);
}
uint32_t CoreCallingConvention::GetIntegerReturnValueRegister()
{
return BNGetIntegerReturnValueRegister(m_object);
}
uint32_t CoreCallingConvention::GetHighIntegerReturnValueRegister()
{
return BNGetHighIntegerReturnValueRegister(m_object);
}
uint32_t CoreCallingConvention::GetFloatReturnValueRegister()
{
return BNGetFloatReturnValueRegister(m_object);
}
uint32_t CoreCallingConvention::GetGlobalPointerRegister()
{
return BNGetGlobalPointerRegister(m_object);
}
vector<uint32_t> CoreCallingConvention::GetImplicitlyDefinedRegisters()
{
size_t count;
uint32_t* regs = BNGetImplicitlyDefinedRegisters(m_object, &count);
vector<uint32_t> result;
result.insert(result.end(), regs, ®s[count]);
BNFreeRegisterList(regs);
return result;
}
RegisterValue CoreCallingConvention::GetIncomingRegisterValue(uint32_t reg, Function* func)
{
return RegisterValue::FromAPIObject(BNGetIncomingRegisterValue(m_object, reg, func ? func->GetObject() : nullptr));
}
RegisterValue CoreCallingConvention::GetIncomingFlagValue(uint32_t flag, Function* func)
{
return RegisterValue::FromAPIObject(BNGetIncomingFlagValue(m_object, flag, func ? func->GetObject() : nullptr));
}
Variable CoreCallingConvention::GetIncomingVariableForParameterVariable(const Variable& var, Function* func)
{
return BNGetIncomingVariableForParameterVariable(m_object, &var, func ? func->GetObject() : nullptr);
}
Variable CoreCallingConvention::GetParameterVariableForIncomingVariable(const Variable& var, Function* func)
{
return BNGetParameterVariableForIncomingVariable(m_object, &var, func ? func->GetObject() : nullptr);
}