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MIPSDebugInterface.cpp
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MIPSDebugInterface.cpp
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// Copyright (c) 2012- PPSSPP Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.
// This program 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 General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
#include <string>
#include <cstring>
#ifndef _MSC_VER
#include <strings.h>
#endif
#include "Common/StringUtils.h"
#include "Core/CoreTiming.h"
#include "Core/Debugger/Breakpoints.h"
#include "Core/Debugger/SymbolMap.h"
#include "Core/Debugger/DebugInterface.h"
#include "Core/MIPS/MIPSDebugInterface.h"
#include "Core/MIPS/MIPSVFPUUtils.h"
#include "Core/HLE/sceKernelThread.h"
#include "Core/MemMap.h"
#include "Core/MIPS/MIPSTables.h"
#include "Core/MIPS/MIPS.h"
#include "Core/System.h"
enum ReferenceIndexType {
REF_INDEX_PC = 32,
REF_INDEX_HI = 33,
REF_INDEX_LO = 34,
REF_INDEX_FPU = 0x1000,
REF_INDEX_FPU_INT = 0x2000,
REF_INDEX_VFPU = 0x4000,
REF_INDEX_VFPU_INT = 0x8000,
REF_INDEX_IS_FLOAT = REF_INDEX_FPU | REF_INDEX_VFPU,
REF_INDEX_HLE = 0x10000,
REF_INDEX_THREAD = REF_INDEX_HLE | 0,
REF_INDEX_MODULE = REF_INDEX_HLE | 1,
REF_INDEX_USEC = REF_INDEX_HLE | 2,
REF_INDEX_TICKS = REF_INDEX_HLE | 3,
};
class MipsExpressionFunctions: public IExpressionFunctions
{
public:
MipsExpressionFunctions(DebugInterface* cpu): cpu(cpu) { }
bool parseReference(char* str, uint32_t& referenceIndex) override
{
for (int i = 0; i < 32; i++)
{
char reg[8];
snprintf(reg, sizeof(reg), "r%d", i);
if (strcasecmp(str, reg) == 0 || strcasecmp(str, cpu->GetRegName(0, i).c_str()) == 0)
{
referenceIndex = i;
return true;
}
else if (strcasecmp(str, cpu->GetRegName(1, i).c_str()) == 0)
{
referenceIndex = REF_INDEX_FPU | i;
return true;
}
snprintf(reg, sizeof(reg), "fi%d", i);
if (strcasecmp(str, reg) == 0)
{
referenceIndex = REF_INDEX_FPU_INT | i;
return true;
}
}
for (int i = 0; i < 128; i++)
{
if (strcasecmp(str, cpu->GetRegName(2, i).c_str()) == 0)
{
referenceIndex = REF_INDEX_VFPU | i;
return true;
}
char reg[8];
snprintf(reg, sizeof(reg), "vi%d", i);
if (strcasecmp(str, reg) == 0)
{
referenceIndex = REF_INDEX_VFPU_INT | i;
return true;
}
}
if (strcasecmp(str, "pc") == 0)
{
referenceIndex = REF_INDEX_PC;
return true;
}
if (strcasecmp(str, "hi") == 0)
{
referenceIndex = REF_INDEX_HI;
return true;
}
if (strcasecmp(str, "lo") == 0)
{
referenceIndex = REF_INDEX_LO;
return true;
}
if (strcasecmp(str, "threadid") == 0) {
referenceIndex = REF_INDEX_THREAD;
return true;
}
if (strcasecmp(str, "moduleid") == 0) {
referenceIndex = REF_INDEX_MODULE;
return true;
}
if (strcasecmp(str, "usec") == 0) {
referenceIndex = REF_INDEX_USEC;
return true;
}
if (strcasecmp(str, "ticks") == 0) {
referenceIndex = REF_INDEX_TICKS;
return true;
}
return false;
}
bool parseSymbol(char* str, uint32_t& symbolValue) override
{
return g_symbolMap->GetLabelValue(str,symbolValue);
}
uint32_t getReferenceValue(uint32_t referenceIndex) override
{
if (referenceIndex < 32)
return cpu->GetRegValue(0, referenceIndex);
if (referenceIndex == REF_INDEX_PC)
return cpu->GetPC();
if (referenceIndex == REF_INDEX_HI)
return cpu->GetHi();
if (referenceIndex == REF_INDEX_LO)
return cpu->GetLo();
if (referenceIndex == REF_INDEX_THREAD)
return __KernelGetCurThread();
if (referenceIndex == REF_INDEX_MODULE)
return __KernelGetCurThreadModuleId();
if (referenceIndex == REF_INDEX_USEC)
return (uint32_t)CoreTiming::GetGlobalTimeUs(); // Loses information
if (referenceIndex == REF_INDEX_TICKS)
return (uint32_t)CoreTiming::GetTicks();
if ((referenceIndex & ~(REF_INDEX_FPU | REF_INDEX_FPU_INT)) < 32)
return cpu->GetRegValue(1, referenceIndex & ~(REF_INDEX_FPU | REF_INDEX_FPU_INT));
if ((referenceIndex & ~(REF_INDEX_VFPU | REF_INDEX_VFPU_INT)) < 128)
return cpu->GetRegValue(2, referenceIndex & ~(REF_INDEX_VFPU | REF_INDEX_VFPU_INT));
return -1;
}
ExpressionType getReferenceType(uint32_t referenceIndex) override {
if (referenceIndex & REF_INDEX_IS_FLOAT) {
return EXPR_TYPE_FLOAT;
}
return EXPR_TYPE_UINT;
}
bool getMemoryValue(uint32_t address, int size, uint32_t& dest, std::string *error) override {
// We allow, but ignore, bad access.
// If we didn't, log/condition statements that reference registers couldn't be configured.
uint32_t valid = Memory::ValidSize(address, size);
uint8_t buf[4]{};
if (valid != 0)
memcpy(buf, Memory::GetPointerUnchecked(address), valid);
switch (size) {
case 1:
dest = buf[0];
return true;
case 2:
dest = (buf[1] << 8) | buf[0];
return true;
case 4:
dest = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0];
return true;
}
*error = StringFromFormat("Unexpected memory access size %d", size);
return false;
}
private:
DebugInterface* cpu;
};
void MIPSDebugInterface::DisAsm(u32 pc, char *out, size_t outSize) {
if (Memory::IsValidAddress(pc))
MIPSDisAsm(Memory::Read_Opcode_JIT(pc), pc, out, outSize);
else
truncate_cpy(out, outSize, "-");
}
unsigned int MIPSDebugInterface::readMemory(unsigned int address) {
if (Memory::IsValidRange(address, 4))
return Memory::ReadUnchecked_Instruction(address).encoding;
return 0;
}
bool MIPSDebugInterface::isAlive()
{
return PSP_IsInited() && coreState != CORE_BOOT_ERROR && coreState != CORE_RUNTIME_ERROR && coreState != CORE_POWERDOWN;
}
bool MIPSDebugInterface::isBreakpoint(unsigned int address)
{
return CBreakPoints::IsAddressBreakPoint(address);
}
void MIPSDebugInterface::setBreakpoint(unsigned int address)
{
CBreakPoints::AddBreakPoint(address);
}
void MIPSDebugInterface::clearBreakpoint(unsigned int address)
{
CBreakPoints::RemoveBreakPoint(address);
}
void MIPSDebugInterface::clearAllBreakpoints() {}
void MIPSDebugInterface::toggleBreakpoint(unsigned int address)
{
CBreakPoints::IsAddressBreakPoint(address)?CBreakPoints::RemoveBreakPoint(address):CBreakPoints::AddBreakPoint(address);
}
int MIPSDebugInterface::getColor(unsigned int address)
{
int colors[6] = {0xe0FFFF,0xFFe0e0,0xe8e8FF,0xFFe0FF,0xe0FFe0,0xFFFFe0};
int n=g_symbolMap->GetFunctionNum(address);
if (n==-1) return 0xFFFFFF;
return colors[n%6];
}
std::string MIPSDebugInterface::getDescription(unsigned int address)
{
return g_symbolMap->GetDescription(address);
}
bool MIPSDebugInterface::initExpression(const char* exp, PostfixExpression& dest)
{
MipsExpressionFunctions funcs(this);
return initPostfixExpression(exp,&funcs,dest);
}
bool MIPSDebugInterface::parseExpression(PostfixExpression& exp, u32& dest)
{
MipsExpressionFunctions funcs(this);
return parsePostfixExpression(exp,&funcs,dest);
}
void MIPSDebugInterface::runToBreakpoint()
{
}
const char *MIPSDebugInterface::GetName()
{
return ("R4");
}
std::string MIPSDebugInterface::GetRegName(int cat, int index) {
static const char * const regName[32] = {
"zero", "at", "v0", "v1",
"a0", "a1", "a2", "a3",
"t0", "t1", "t2", "t3",
"t4", "t5", "t6", "t7",
"s0", "s1", "s2", "s3",
"s4", "s5", "s6", "s7",
"t8", "t9", "k0", "k1",
"gp", "sp", "fp", "ra"
};
static const char * const fpRegName[32] = {
"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
"f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
"f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
"f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
};
if (cat == 0 && (unsigned)index < sizeof(regName)) {
return regName[index];
} else if (cat == 1 && (unsigned)index < sizeof(fpRegName)) {
return fpRegName[index];
} else if (cat == 2) {
return GetVectorNotation(index, V_Single);
}
return "???";
}