225 lines
6.3 KiB
C++
225 lines
6.3 KiB
C++
// Copyright (C) 2003-2009 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#include <iostream>
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#include <vector>
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#include "Common.h"
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#include "FileUtil.h"
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#include "DSPCodeUtil.h"
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#include "assemble.h"
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#include "disassemble.h"
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bool Assemble(const char *text, std::vector<u16> &code)
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{
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AssemblerSettings settings;
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settings.pc = 0;
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// settings.decode_registers = false;
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// settings.decode_names = false;
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settings.print_tabs = false;
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settings.ext_separator = '\'';
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// TODO: fix the terrible api of the assembler.
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DSPAssembler assembler(settings);
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if (!assembler.Assemble(text, code)) {
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std::cerr << assembler.GetErrorString() << std::endl;
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return false;
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}
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return true;
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}
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bool Disassemble(const std::vector<u16> &code, bool line_numbers, std::string &text)
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{
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if (code.empty())
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return false;
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AssemblerSettings settings;
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// These two prevent roundtripping.
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settings.show_hex = false;
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settings.show_pc = line_numbers;
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settings.ext_separator = '\'';
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settings.decode_names = false;
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settings.decode_registers = true;
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DSPDisassembler disasm(settings);
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bool success = disasm.Disassemble(0, code, 0x0000, text);
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return success;
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}
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bool Compare(const std::vector<u16> &code1, const std::vector<u16> &code2)
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{
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if (code1.size() != code2.size())
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printf("Size difference! 1=%i 2=%i\n", (int)code1.size(), (int)code2.size());
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int count_equal = 0;
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const int min_size = (int)std::min(code1.size(), code2.size());
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AssemblerSettings settings;
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DSPDisassembler disassembler(settings);
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for (int i = 0; i < min_size; i++)
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{
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if (code1[i] == code2[i])
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count_equal++;
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else
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{
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std::string line1, line2;
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u16 pc = i;
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disassembler.DisOpcode(&code1[0], 0x0000, 2, &pc, line1);
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pc = i;
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disassembler.DisOpcode(&code2[0], 0x0000, 2, &pc, line2);
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printf("!! %04x : %04x vs %04x - %s vs %s\n", i, code1[i], code2[i], line1.c_str(), line2.c_str());
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}
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}
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if (code2.size() != code1.size())
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{
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printf("Extra code words:\n");
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const std::vector<u16> &longest = code1.size() > code2.size() ? code1 : code2;
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for (int i = min_size; i < (int)longest.size(); i++)
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{
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u16 pc = i;
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std::string line;
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disassembler.DisOpcode(&longest[0], 0x0000, 2, &pc, line);
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printf("!! %s\n", line.c_str());
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}
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}
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printf("Equal instruction words: %i / %i\n", count_equal, min_size);
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return code1.size() == code2.size() && code1.size() == count_equal;
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}
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void GenRandomCode(int size, std::vector<u16> &code)
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{
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code.resize(size);
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for (int i = 0; i < size; i++)
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{
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code[i] = rand() ^ (rand() << 8);
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}
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}
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void CodeToHeader(const std::vector<u16> &code, const char *name, std::string &header)
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{
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std::vector<u16> code_copy = code;
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// Add some nops at the end to align the size a bit.
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while (code_copy.size() & 7)
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code_copy.push_back(0);
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char buffer[1024];
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header.clear();
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header.reserve(code.size() * 4);
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header.append("#define NUM_UCODES 1\n\n");
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header.append("#ifndef _MSCVER\n");
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sprintf(buffer, "const unsigned short %s[NUM_UCODES][0x1000] = {\n", name);
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header.append(buffer);
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header.append("#else\n");
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sprintf(buffer, "const unsigned short %s[NUM_UCODES][0x1000] __attribute__ ((aligned (64))) = {\n", name);
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header.append(buffer);
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header.append("#endif\n\n");
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header.append("\t{\n\t\t");
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for (int j = 0; j < code.size(); j++)
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{
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if (j && ((j & 15) == 0))
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header.append("\n\t\t");
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sprintf(buffer, "0x%04x, ", code[j]);
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header.append(buffer);
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}
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header.append("\n\t},\n");
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header.append("};\n");
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}
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void CodesToHeader(const std::vector<u16> *codes, int numCodes,
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const char *name, std::string &header)
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{
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char buffer[1024];
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int reserveSize = 0;
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for(int i = 0; i < numCodes; i++)
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reserveSize += (int)codes[i].size();
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header.clear();
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header.reserve(reserveSize * 4);
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sprintf(buffer, "#define NUM_UCODES %d\n\n", numCodes);
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header.append(buffer);
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header.append("#ifndef _MSCVER\n");
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sprintf(buffer, "const unsigned short %s[NUM_UCODES][0x1000] = {\n", name);
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header.append(buffer);
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header.append("#else\n");
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sprintf(buffer, "const unsigned short %s[NUM_UCODES][0x1000] __attribute__ ((aligned (64))) = {\n", name);
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header.append(buffer);
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header.append("#endif\n\n");
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for(int i = 0; i < numCodes; i++) {
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if(codes[i].size() == 0)
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continue;
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std::vector<u16> code_copy = codes[i];
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// Add some nops at the end to align the size a bit.
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while (code_copy.size() & 7)
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code_copy.push_back(0);
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header.append("\t{\n\t\t");
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for (int j = 0; j < codes[i].size(); j++)
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{
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if (j && ((j & 15) == 0))
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header.append("\n\t\t");
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sprintf(buffer, "0x%04x, ", codes[i][j]);
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header.append(buffer);
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}
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header.append("\n\t},\n");
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}
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header.append("};\n");
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}
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void CodeToBinaryStringBE(const std::vector<u16> &code, std::string &str)
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{
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str.resize(code.size() * 2);
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for (int i = 0; i < (int)code.size(); i++)
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{
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str[i * 2 + 0] = code[i] >> 8;
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str[i * 2 + 1] = code[i] & 0xff;
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}
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}
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void BinaryStringBEToCode(const std::string &str, std::vector<u16> &code)
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{
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code.resize(str.size() / 2);
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for (int i = 0; i < (int)code.size(); i++)
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{
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code[i] = ((u16)(u8)str[i * 2 + 0] << 8) | ((u16)(u8)str[i * 2 + 1]);
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}
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}
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bool LoadBinary(const char *filename, std::vector<u16> &code)
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{
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std::string buffer;
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if (!File::ReadFileToString(false, filename, buffer))
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return false;
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BinaryStringBEToCode(buffer, code);
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return true;
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}
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bool SaveBinary(const std::vector<u16> &code, const char *filename)
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{
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std::string buffer;
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CodeToBinaryStringBE(code, buffer);
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if (!File::WriteStringToFile(false, buffer, filename))
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return false;
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return true;
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}
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