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vle_ext.cpp
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#define _CRT_SECURE_NO_WARNINGS
#include <cinttypes>
#include <cstdio>
#include <cstring>
#include <cmath>
#include "binaryninjaapi.h"
#include "binaryninjacore.h"
#include "lowlevelilinstruction.h"
#include "libvle/vle.h"
#include "vle_ext.h"
using namespace BinaryNinja;
using namespace std;
#define CTR_REG 3
// #define PPC_REG_MSR 152
#define PPC_REG_MSR 344 // ppc_reg::PPC_REG_ENDING
#define CR0_UNSIGNED_FLAG 2
#define CR0_SIGNED_FLAG 1
#define IL_FLAG_XER_CA 34
uint32_t cr_unsigned_array[] = {
2, // CR0
4, // CR1
6, // CR2
8, // CR3
10, // CR4
12, // CR5
14, // CR6
16 // CR7
};
uint32_t cr_signed_array[] = {
1, // CR0
3, // CR1
5, // CR2
7, // CR3
9, // CR4
11, // CR5
13, // CR6
15 // CR7
};
enum VLEIntrinsics{
CNTLWZ_INTRINSIC,
E_STMVGPRW_INTRINSIC,
E_LDMVGPRW_INTRINSIC
};
// TODO MTSPR decoding
// TODO e_bc and e_bcl e_bdz and e_bdzl signed jump value - check correctness.
class ppcVleArchitectureExtension : public ArchitectureExtension
{
public:
ppcVleArchitectureExtension(const std::string &name,Architecture* ppc) : ArchitectureExtension(name,ppc) {
}
virtual size_t GetInstructionAlignment() const override {
return 2;
}
uint32_t get_r_reg(uint32_t value){
return value + 87;
}
uint32_t get_cr_reg(uint32_t value){
return value + 12;
}
insn_names get_insn(std::string const& insn_name) {
if (insn_name == "se_mtctr") return SE_MTCTR;
if (insn_name == "se_mfctr") return SE_MFCTR;
if (insn_name == "se_mflr") return SE_MFLR;
if (insn_name == "se_mtspr") return SE_MTSPR;
if (insn_name == "se_mfspr") return SE_MFSPR;
if (insn_name == "se_bctr") return SE_BCTR;
if (insn_name == "se_bctrl") return SE_BCTRL;
if (insn_name == "e_lis") return E_LIS;
if (insn_name == "e_li") return E_LI;
if (insn_name == "se_li") return SE_LI;
if (insn_name == "se_mr") return SE_MR;
if (insn_name == "se_mfar") return SE_MFAR;
if (insn_name == "se_mtar") return SE_MTAR;
if (insn_name == "se_add") return SE_ADD;
if (insn_name == "e_add2i") return E_ADD2I;
if (insn_name == "se_addi") return SE_ADDI;
if (insn_name == "e_add2is") return E_ADD2IS;
if (insn_name == "e_add16i") return E_ADD16I;
if (insn_name == "e_addi") return E_ADDI;
if (insn_name == "e_stwu") return E_STWU;
if (insn_name == "e_sthu") return E_STHU;
if (insn_name == "e_stbu") return E_STBU;
if (insn_name == "e_stw") return E_STW;
if (insn_name == "se_stw") return SE_STW;
if (insn_name == "e_sth") return E_STH;
if (insn_name == "se_sth") return SE_STH;
if (insn_name == "e_stb") return E_STB;
if (insn_name == "se_stb") return SE_STB;
if (insn_name == "se_lwz") return SE_LWZ;
if (insn_name == "e_lwz") return E_LWZ;
if (insn_name == "e_lhz") return E_LHZ;
if (insn_name == "se_lhz") return SE_LHZ;
if (insn_name == "se_lbz") return SE_LBZ;
if (insn_name == "e_lbz") return E_LBZ;
if (insn_name == "e_lbzu") return E_LBZU;
if (insn_name == "e_lhzu") return E_LHZU;
if (insn_name == "e_lwzu") return E_LWZU;
if (insn_name == "se_cmp") return SE_CMP;
if (insn_name == "e_cmph") return E_CMPH;
if (insn_name == "se_cmph") return SE_CMPH;
if (insn_name == "se_cmphl") return SE_CMPHL;
if (insn_name == "se_cmphl16i") return SE_CMPHL16I;
if (insn_name == "se_cmpi") return SE_CMPI;
if (insn_name == "se_cmpl") return SE_CMPL;
if (insn_name == "se_cmpli") return SE_CMPLI;
if (insn_name == "e_cmpli") return E_CMPLI;
if (insn_name == "e_cmpl16i") return E_CMPL16I;
if (insn_name == "e_cmpi") return E_CMPI;
if (insn_name == "se_extzb") return SE_EXTZB;
if (insn_name == "se_extzh") return SE_EXTZH;
if (insn_name == "se_extsb") return SE_EXTSB;
if (insn_name == "se_extsh") return SE_EXTSH;
if (insn_name == "e_mulli") return E_MULLI;
if (insn_name == "e_mull2i") return E_MULL2I;
if (insn_name == "se_mullw") return SE_MULLW;
if (insn_name == "se_neg") return SE_NEG;
if (insn_name == "se_not") return SE_NOT;
if (insn_name == "se_or") return SE_OR;
if (insn_name == "e_ori") return E_ORI;
if (insn_name == "e_or2i") return E_OR2I;
if (insn_name == "e_or2is") return E_OR2IS;
if (insn_name == "e_rlw") return E_RLW;
if (insn_name == "e_rlwi") return E_RLWI;
if (insn_name == "e_rlwinm") return E_RLWINM;
if (insn_name == "e_rlwimi") return E_RLWIMI;
if (insn_name == "e_slwi") return E_SLWI;
if (insn_name == "se_slw") return SE_SLW;
if (insn_name == "se_slwi") return SE_SLWI;
if (insn_name == "se_sraw") return SE_SRAW;
if (insn_name == "se_srawi") return SE_SRAWI;
if (insn_name == "e_srwi") return E_SRWI;
if (insn_name == "se_srw") return SE_SRW;
if (insn_name == "se_srwi") return SE_SRWI;
if (insn_name == "e_stmw") return E_STMW;
if (insn_name == "se_sub") return SE_SUB;
if (insn_name == "se_subf") return SE_SUBF;
if (insn_name == "e_subfic") return E_SUBFIC;
if (insn_name == "se_subi") return SE_SUBI;
if (insn_name == "e_xori") return E_XORI;
if (insn_name == "se_mtlr") return SE_MTLR;
if (insn_name == "e_lmw") return E_LMW;
if (insn_name == "se_and") return SE_AND;
if (insn_name == "se_andi") return SE_ANDI;
if (insn_name == "se_andc") return SE_ANDC;
if (insn_name == "e_andi") return E_ANDI;
if (insn_name == "e_and2i") return E_AND2I;
if (insn_name == "e_and2is") return E_AND2IS;
if (insn_name == "se_bmaski") return SE_BMASKI;
if (insn_name == "e_lha") return E_LHA;
if (insn_name == "e_lhau") return E_LHAU;
if (insn_name == "se_btsti") return SE_BTSTI;
if (insn_name == "se_bseti") return SE_BSETI;
if (insn_name == "se_bgeni") return SE_BGENI;
if (insn_name == "e_addic") return E_ADDIC;
if (insn_name == "se_bclri") return SE_BCLRI;
if (insn_name == "e_cmphl16i") return E_CMPHL16I;
if (insn_name == "e_cmp16i") return E_CMP16I;
if (insn_name == "se_sc") return SE_SC;
if (insn_name == "e_cmph16i") return E_CMPH16I;
if (insn_name == "e_crand") return E_CRAND;
if (insn_name == "e_crandc") return E_CRANDC;
if (insn_name == "e_mcrf") return E_MCRF;
if (insn_name == "efsabs") return EFSABS;
if (insn_name == "efsadd") return EFSADD;
if (insn_name == "efscfh") return EFSCFH;
if (insn_name == "efscfsf") return EFSCFSF;
if (insn_name == "efscfsi") return EFSCFSI;
if (insn_name == "efscfuf") return EFSCFUF;
if (insn_name == "efscfui") return EFSCFUI;
if (insn_name == "efscmpgt") return EFSCMPGT;
if (insn_name == "efscmpeq") return EFSCMPEQ;
if (insn_name == "efscmplt") return EFSCMPLT;
if (insn_name == "efscth") return EFSCTH;
if (insn_name == "efsctsf") return EFSCTSF;
if (insn_name == "efsctsi") return EFSCTSI;
if (insn_name == "efsctsiz") return EFSCTSIZ;
if (insn_name == "efsctuf") return EFSCTUF;
if (insn_name == "efsctui") return EFSCTUI;
if (insn_name == "efsctuiz") return EFSCTUIZ;
if (insn_name == "efsdiv") return EFSDIV;
if (insn_name == "efsmadd") return EFSMADD;
if (insn_name == "efsmax") return EFSMAX;
if (insn_name == "efsmin") return EFSMIN;
if (insn_name == "efsmsub") return EFSMSUB;
if (insn_name == "efsmul") return EFSMUL;
if (insn_name == "efsnabs") return EFSNABS;
if (insn_name == "efsneg") return EFSNEG;
if (insn_name == "efsnmadd") return EFSNMADD;
if (insn_name == "efsnmsub") return EFSNMSUB;
if (insn_name == "efssqrt") return EFSSQRT;
if (insn_name == "efssub") return EFSSUB;
if (insn_name == "efststeq") return EFSTSTEQ;
if (insn_name == "efststgt") return EFSTSTGT;
if (insn_name == "efststlt") return EFSTSTLT;
if (insn_name == "e_ldmvgprw") return E_LDMVGPRW;
if (insn_name == "e_stmvgprw") return E_STMVGPRW;
if (insn_name == "se_illegal") return SE_ILLEGAL;
return INVALID_INSN;
}
// Registers override
virtual vector<uint32_t> GetAllRegisters() override
{
vector<uint32_t> result = this->GetBaseArchitecture()->GetAllRegisters();
result.push_back(PPC_REG_MSR);
return result;
}
virtual string GetRegisterName(uint32_t regId) override
{
if (regId == PPC_REG_MSR)
return "MSR";
return this->GetBaseArchitecture()->GetRegisterName(regId);
}
virtual std::vector<uint32_t> GetGlobalRegisters() override
{
//return vector<uint32_t>{ PPC_REG_R2, PPC_REG_R13, PPC_REG_MSR };
vector<uint32_t> result = this->GetBaseArchitecture()->GetGlobalRegisters();
result.push_back(PPC_REG_MSR);
return result;
}
BNRegisterInfo RegisterInfo(uint32_t fullWidthReg, size_t offset, size_t size, bool zeroExtend = false)
{
BNRegisterInfo result;
result.fullWidthRegister = fullWidthReg;
result.offset = offset;
result.size = size;
result.extend = zeroExtend ? ZeroExtendToFullWidth : NoExtend;
return result;
}
virtual BNRegisterInfo GetRegisterInfo(uint32_t regId) override
{
//MYLOG("%s(%s)\n", __func__, powerpc_reg_to_str(regId));
switch(regId) {
// BNRegisterInfo RegisterInfo(uint32_t fullWidthReg, size_t offset,
// size_t size, bool zeroExtend = false)
case PPC_REG_MSR: return RegisterInfo(PPC_REG_MSR, 0 ,4);
default:
//LogError("%s(%d == \"%s\") invalid argument", __func__,
// regId, powerpc_reg_to_str(regId));
return this->GetBaseArchitecture()->GetRegisterInfo(regId);
}
}
//------------------------------------------------------------------------------
virtual std::string GetIntrinsicName (uint32_t intrinsic) override {
switch (intrinsic) {
case CNTLWZ_INTRINSIC:
return "_CountLeadingZeros";
case E_STMVGPRW_INTRINSIC:
return "_Store (R0, R3:R12)";
case E_LDMVGPRW_INTRINSIC:
return "_Load (R0, R3:R12)";
default:
return "";
}
}
virtual std::vector<uint32_t> GetAllIntrinsics() override {
return vector<uint32_t> {
CNTLWZ_INTRINSIC,
E_STMVGPRW_INTRINSIC,
E_LDMVGPRW_INTRINSIC
};
}
virtual std::vector<NameAndType> GetIntrinsicInputs (uint32_t intrinsic) override {
switch (intrinsic)
{
case CNTLWZ_INTRINSIC:
return {
NameAndType("WORD", Type::IntegerType(4, false))
};
case E_STMVGPRW_INTRINSIC:
return {
NameAndType("At", Type::IntegerType(4, false))
};
case E_LDMVGPRW_INTRINSIC:
return {
NameAndType("From", Type::IntegerType(4, false))
};
default:
return vector<NameAndType>();
}
}
virtual std::vector<Confidence<Ref<Type>>> GetIntrinsicOutputs (uint32_t intrinsic) override {
switch (intrinsic)
{
case CNTLWZ_INTRINSIC:
return { Type::IntegerType(4, false) };
case E_STMVGPRW_INTRINSIC:
return { };
//return vector<Confidence<Ref<Type>>>();
case E_LDMVGPRW_INTRINSIC:
return {
/*Type::IntegerType(4, false),
Type::IntegerType(4, false),
Type::IntegerType(4, false),
Type::IntegerType(4, false),
Type::IntegerType(4, false),
Type::IntegerType(4, false),
Type::IntegerType(4, false),
Type::IntegerType(4, false),
Type::IntegerType(4, false),
Type::IntegerType(4, false),
Type::IntegerType(4, false)*/
};
default:
return vector<Confidence<Ref<Type>>>();
}
}
virtual bool GetInstructionLowLevelIL(const uint8_t* data, uint64_t addr, size_t& len, LowLevelILFunction& il) override
{
vle_t* instr;
bool should_update_flags = false;
bool indirect = false;
BNLowLevelILLabel *label = NULL;
BNLowLevelILLabel *true_label = NULL;
BNLowLevelILLabel *false_label = NULL;
LowLevelILLabel true_tag;
LowLevelILLabel false_tag;
ExprId condition;
char instr_name[50];
/*if (this->is_vle == 0) {
return ArchitectureHook::GetInstructionLowLevelIL(data, addr, len, il);
} */
if ((instr = vle_decode_one(data, 4,(uint32_t) addr))) {
strncpy(instr_name,instr->name,49);
len = instr->size;
//LogError("Processing %s at 0x%x,",instr_name, addr);
if (strncmp(instr_name, "se_",3) == 0 || strncmp(instr_name, "e_", 2) == 0 || strncmp(instr->name, "ef",2) == 0 || strncmp(instr->name, "ev",2) == 0) {
//if (true) {
//len = instr->size;
if (instr_name[strlen(instr_name)-1] == '.') {
should_update_flags = true;
instr_name[strlen(instr_name)-1] = 0; // replace the dot with NULL byte so that we dont have to care
}
if (instr->op_type == OP_TYPE_SYNC) {
il.AddInstruction(il.Nop());
} else if (instr->op_type == OP_TYPE_RET) {
il.AddInstruction(il.Return(il.Register(4,this->GetLinkRegister())));
} else if (instr->op_type == OP_TYPE_TRAP) {
il.AddInstruction(il.Return(il.Unimplemented()));
} else if (instr->op_type == OP_TYPE_JMP) {
label = il.GetLabelForAddress(this, instr->fields[0].value);
auto current_func = il.GetFunction();
if (current_func) {
if ((instr->fields[0].value < current_func->GetLowestAddress() || instr->fields[0].value > current_func->GetHighestAddress())) {
//LogError("JUMPING 0x%x ELSEWHERE", addr);
il.AddInstruction(il.Call(il.ConstPointer(4,instr->fields[0].value)));
//il.AddInstruction(il.Return(this->GetLinkRegister()));
return true;
}
}
else {
LogWarn("il.GetFunction() returned null for address 0x%08" PRIx64, addr);
}
if (label) {
il.AddInstruction(il.Goto(*label));
} else {
il.AddInstruction(il.ConstPointer(4, instr->fields[0].value));
}
} else if (instr->op_type == OP_TYPE_CALL) {
if (instr->fields[0].value != (uint32_t) addr + instr->size) {
il.AddInstruction(il.Call(il.ConstPointer(4,instr->fields[0].value)));
} else {
il.AddInstruction(il.SetRegister(4,this->GetLinkRegister(),il.ConstPointer(4,instr->fields[0].value)));
}
} else if (instr->op_type == OP_TYPE_RJMP) {
il.AddInstruction(il.Jump(il.Register(4, CTR_REG)));
il.MarkLabel(false_tag);
} else if (instr->op_type == OP_TYPE_CCALL) {
uint32_t value;
if (instr->fields[0].type == TYPE_JMP) {
// True branch
true_label = il.GetLabelForAddress(this, instr->fields[0].value);
value = instr->fields[0].value;
} else if (instr->fields[0].type == TYPE_CR) {
// True branch
true_label = il.GetLabelForAddress(this, instr->fields[1].value);
value = instr->fields[1].value;
} else {
return false;
}
// False Branch
false_label = il.GetLabelForAddress(this, ((uint32_t) addr + instr->size));
switch (instr->cond) {
case COND_GE:
condition = il.FlagGroup(3);
break;
case COND_LE:
condition = il.FlagGroup(1);
break;
case COND_NE:
condition = il.FlagGroup(5);
break;
case COND_VC:
condition = il.Unimplemented();
break;
case COND_LT:
condition = il.FlagGroup(0);
break;
case COND_GT:
condition = il.FlagGroup(2);
break;
case COND_EQ:
condition = il.FlagGroup(4);
break;
case COND_VS:
condition = il.Unimplemented();
break;
default:
break;
};
if (strcmp(instr_name,"e_bdnzl") == 0) {
// Not equal to zero
condition = il.CompareNotEqual(
4,
il.Register(
4,
CTR_REG
),
il.Const(
4,
0
)
);
// Decrement the counter
il.AddInstruction(
il.SetRegister(
4,
CTR_REG,
il.Sub(
4,
il.Register(
4,
CTR_REG
),
il.Const(
4,
1
)
)
)
);
} else if (strcmp(instr_name,"e_bdzl") == 0) {
// Equal to zero
condition = il.CompareEqual(
4,
il.Register(
4,
CTR_REG
),
il.Const(
4,
0
)
);
// Decrement the counter
il.AddInstruction(
il.SetRegister(
4,
CTR_REG,
il.Sub(
4,
il.Register(
4,
CTR_REG
),
il.Const(
4,
1
)
)
)
);
}
if (true_label && false_label)
il.AddInstruction(il.If(condition,*true_label,*false_label));
else if (true_label)
il.AddInstruction(il.If(condition,*true_label,false_tag));
else if (false_label)
il.AddInstruction(il.If(condition,true_tag,*false_label));
else
il.AddInstruction(il.If(condition,true_tag,false_tag));
if (!true_label) {
il.MarkLabel(true_tag);
}
il.AddInstruction(il.Call(il.ConstPointer(4,value)));
if (!false_label) {
il.MarkLabel(false_tag);
}
} else if (instr->op_type == OP_TYPE_CJMP) {
int value;
if (instr->fields[0].type == TYPE_JMP) {
// True branch
true_label = il.GetLabelForAddress(this, instr->fields[0].value);
value = instr->fields[0].value;
} else if (instr->fields[0].type == TYPE_CR) {
// True branch
true_label = il.GetLabelForAddress(this, instr->fields[1].value);
value = instr->fields[1].value;
} else {
return false;
}
// False Branch
false_label = il.GetLabelForAddress(this, ((uint32_t) addr + instr->size));
switch (instr->cond) {
case COND_GE:
condition = il.FlagGroup(3);
break;
case COND_LE:
condition = il.FlagGroup(1);
break;
case COND_NE:
condition = il.FlagGroup(5);
break;
case COND_VC:
condition = il.Unimplemented();
break;
case COND_LT:
condition = il.FlagGroup(0);
break;
case COND_GT:
condition = il.FlagGroup(2);
break;
case COND_EQ:
condition = il.FlagGroup(4);
break;
case COND_VS:
condition = il.Unimplemented();
break;
default:
break;
}
// Conditions using counter register
if (strcmp(instr_name,"e_bdnz") == 0) {
// Not equal to zero
condition = il.CompareNotEqual(
4,
il.Register(
4,
CTR_REG
),
il.Const(
4,
0
)
);
// Decrement the counter
il.AddInstruction(
il.SetRegister(
4,
CTR_REG,
il.Sub(
4,
il.Register(
4,
CTR_REG
),
il.Const(
4,
1
)
)
)
);
} else if (strcmp(instr_name,"e_bdz") == 0) {
// Equal to zero
condition = il.CompareEqual(
4,
il.Register(
4,
CTR_REG
),
il.Const(
4,
0
)
);
// Decrement the counter
il.AddInstruction(
il.SetRegister(
4,
CTR_REG,
il.Sub(
4,
il.Register(
4,
CTR_REG
),
il.Const(
4,
1
)
)
)
);
}
if (true_label && false_label)
il.AddInstruction(il.If(condition,*true_label,*false_label));
else if (true_label)
il.AddInstruction(il.If(condition,*true_label,false_tag));
else if (false_label)
il.AddInstruction(il.If(condition,true_tag,*false_label));
else
il.AddInstruction(il.If(condition,true_tag,false_tag));
if (!true_label) {
il.MarkLabel(true_tag);
}
il.AddInstruction(il.Jump(il.ConstPointer(4,value)));
if (!false_label) {
il.MarkLabel(false_tag);
}
} else {
switch (this->get_insn(instr_name))
{
case SE_MTCTR:
{
il.AddInstruction(il.SetRegister(4, CTR_REG, il.Register(4, this->get_r_reg(instr->fields[0].value))));
}
break;
case SE_MFCTR:
{
il.AddInstruction(il.SetRegister(4, this->get_r_reg(instr->fields[0].value), il.Register(4, CTR_REG)));
}
break;
case SE_MFLR:
{
il.AddInstruction(il.SetRegister(4, this->get_r_reg(instr->fields[0].value), il.Register(4, this->GetLinkRegister())));
}
break;
case SE_MTSPR:
{
il.AddInstruction(il.SetRegister(4, CTR_REG, il.Register(4, this->get_r_reg(instr->fields[0].value))));
}
break;
case SE_MFSPR:
{
il.AddInstruction(il.SetRegister(4, this->get_r_reg(instr->fields[0].value), il.Register(4, CTR_REG)));
}
break;
case SE_BCTR:
{
il.AddInstruction(il.Jump(il.Register(4, CTR_REG)));
}
break;
case SE_BCTRL:
{
il.AddInstruction(il.Call(il.Register(4, CTR_REG)));
}
break;
case E_LIS:
{
il.AddInstruction(
il.SetRegister(
4,
this->get_r_reg(instr->fields[0].value),
il.ShiftLeft(
4,
il.Const(
4,
instr->fields[1].value
),
il.Const(
4,
16
)
)
)
);
}
break;
case E_LI: //TODO signing
{
il.AddInstruction(
il.SetRegister(
4,
this->get_r_reg(instr->fields[0].value),
il.SignExtend(
4,
il.Const(
3,
instr->fields[1].value
)
)
)
);
}
break;
case SE_LI:
{
il.AddInstruction(
il.SetRegister(
4,
this->get_r_reg(instr->fields[0].value),
il.Const(
4,
instr->fields[1].value
)
)
);
}
break;
case SE_MR:
case SE_MFAR:
case SE_MTAR:
{
il.AddInstruction(
il.SetRegister(
4,
this->get_r_reg(instr->fields[0].value),
il.Register(
4,
this->get_r_reg(instr->fields[1].value)
)
)
);
}
break;
case SE_ADD:
{
il.AddInstruction(
il.SetRegister(
4,
this->get_r_reg(instr->fields[0].value),
il.Add(
4,
il.Register(
4,
this->get_r_reg(instr->fields[0].value)
),
il.Register(
4,
this->get_r_reg(instr->fields[1].value)
)
)
)
);
}
break;
case E_ADD2I: // 010c68f2 TODO flags?
{
il.AddInstruction(
il.SetRegister(
4,
this->get_r_reg(instr->fields[0].value),
il.Add(
4,
il.Register(
4,
this->get_r_reg(instr->fields[0].value)
),
il.SignExtend(
4,
il.Const(
2,
instr->fields[1].value
)
),
should_update_flags ? (CR0_UNSIGNED_FLAG) : 0
)
)
);
}
break;
case SE_ADDI:
{
il.AddInstruction(
il.SetRegister(
4,
this->get_r_reg(instr->fields[0].value),
il.Add(
4,
il.Register(
4,
this->get_r_reg(instr->fields[0].value)
),
il.Const(
4,
instr->fields[1].value
),
should_update_flags ? CR0_UNSIGNED_FLAG : 0
)
)
);
}
break;
case E_ADD2IS:
{
il.AddInstruction(
il.SetRegister(
4,
this->get_r_reg(instr->fields[0].value),
il.Add(
4,
il.Register(
4,
this->get_r_reg(instr->fields[0].value)
),
il.ShiftLeft(
4,
il.Const(
4,
instr->fields[1].value
),
il.Const(
4,
16
)
)
),
should_update_flags ? CR0_UNSIGNED_FLAG : 0
)
);
}
break;
case E_ADD16I:
{
il.AddInstruction(
il.SetRegister(
4,
this->get_r_reg(instr->fields[0].value),
il.Add(
4,
il.Register(
4,
this->get_r_reg(instr->fields[1].value)
),
il.SignExtend(
4,
il.Const(
2,
instr->fields[2].value
)
)
)
)
);
}
break;
case E_ADDI:
{
il.AddInstruction(
il.SetRegister(
4,
this->get_r_reg(instr->fields[0].value),
il.Add(
4,
il.Register(
4,
this->get_r_reg(instr->fields[1].value)
),
il.SignExtend(
4,
il.Const(
1,
instr->fields[2].value
)
),
should_update_flags ? CR0_UNSIGNED_FLAG : 0
)
)
);
}
break;
case E_STWU:
{
il.AddInstruction(
il.Store(
4,
il.Add(
4,
il.Register(
4,
this->get_r_reg(instr->fields[1].value)
),
il.SignExtend(
4,
il.Const(
1,
instr->fields[2].value
)
)
),
il.Register(
4,
this->get_r_reg(instr->fields[0].value)
)
)
);
il.AddInstruction(
il.SetRegister(
4,
this->get_r_reg(instr->fields[1].value),
il.Add(
4,
il.Register(
4,
this->get_r_reg(instr->fields[1].value)
),
il.SignExtend(
4,
il.Const(
1,
instr->fields[2].value
)
)
)
)
);
}
break;
case E_STHU:
{
il.AddInstruction(
il.Store(
2,
il.Add(
4,
il.Register(
4,
this->get_r_reg(instr->fields[1].value)
),
il.SignExtend(
4,
il.Const(
1,
instr->fields[2].value
)
)
),
il.Register(
2,
this->get_r_reg(instr->fields[0].value)
)
)
);
il.AddInstruction(
il.SetRegister(
4,
this->get_r_reg(instr->fields[1].value),
il.Add(
4,
il.Register(
4,
this->get_r_reg(instr->fields[1].value)
),
il.SignExtend(
4,
il.Const(
1,
instr->fields[2].value