dolphin/Source/Plugins/Plugin_DSP_LLE/Src/DSPSymbols.cpp

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// Copyright (C) 2003 Dolphin 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.
// 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 SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#include <iostream> // I hope this doesn't break anything
#include <stdio.h>
#include <stdarg.h>
#include <list>
#include <map>
#include <string>
#include "Common.h"
#include "StringUtil.h"
#include "DSPCore.h"
#include "DSPSymbols.h"
#include "disassemble.h"
namespace DSPSymbols {
DSPSymbolDB g_dsp_symbol_db;
std::map<u16, int> addr_to_line;
std::map<int, u16> line_to_addr;
std::map<int, const char *> line_to_symbol;
std::vector<std::string> lines;
int line_counter = 0;
int Addr2Line(u16 address) // -1 for not found
{
std::map<u16, int>::iterator iter = addr_to_line.find(address);
if (iter != addr_to_line.end())
return iter->second;
else
return -1;
}
int Line2Addr(int line) // -1 for not found
{
std::map<int, u16>::iterator iter = line_to_addr.find(line);
if (iter != line_to_addr.end())
return iter->second;
else
return -1;
}
const char *GetLineText(int line)
{
if (line > 0 && line < (int)lines.size())
{
return lines[line].c_str();
}
else
return "----";
}
Symbol *DSPSymbolDB::GetSymbolFromAddr(u32 addr)
{
XFuncMap::iterator it = functions.find(addr);
if (it != functions.end())
return &it->second;
else
{
for (XFuncMap::iterator iter = functions.begin(); iter != functions.end(); iter++)
{
if (addr >= iter->second.address && addr < iter->second.address + iter->second.size)
return &iter->second;
}
}
return 0;
}
// lower case only
bool IsHexDigit(char c) {
switch (c) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
return true;
default:
return false;
}
}
bool IsAlpha(char c) {
return (c >= 'A' && c <= 'Z') ||
(c >= 'a' && c <= 'z');
}
void DisasssembleRange(u16 start, u16 end)
{
}
bool ReadAnnotatedAssembly(const char *filename)
{
FILE *f = fopen(filename, "r");
if (!f) {
ERROR_LOG(DSPLLE, "Bah! ReadAnnotatedAssembly couldn't find the file %s", filename);
return false;
}
char line[512];
int last_addr = 0;
lines.reserve(3000);
// Symbol generation
int brace_count = 0;
bool symbol_in_progress = false;
int symbol_count = 0;
Symbol current_symbol;
while (fgets(line, 512, f))
{
// Scan string for the first 4-digit hex string.
size_t len = strlen(line);
int first_hex = -1;
bool hex_found = false;
for (unsigned int i = 0; i < strlen(line); i++)
{
const char c = line[i];
if (IsHexDigit(c))
{
if (first_hex == -1)
{
first_hex = i;
}
else
{
// Remove hex notation
if ((int)i == first_hex + 3 &&
(first_hex == 0 || line[first_hex - 1] != 'x') &&
(i >= len - 1 || line[i + 1] == ' '))
{
hex_found = true;
break;
}
}
} else {
if (i - first_hex < 3)
{
first_hex = -1;
}
if (IsAlpha(c))
break;
}
}
// Scan for function starts
if (!memcmp(line, "void", 4)) {
char temp[256];
for (size_t i = 6; i < len; i++) {
if (line[i] == '(') {
// Yep, got one.
memcpy(temp, line + 5, i - 5);
temp[i - 5] = 0;
// Mark symbol so the next hex sets the address
current_symbol.name = temp;
current_symbol.address = 0xFFFF;
current_symbol.index = symbol_count++;
symbol_in_progress = true;
// Reset brace count.
brace_count = 0;
}
}
}
// Scan for braces
for (size_t i = 0; i < len; i++) {
if (line[i] == '{')
brace_count++;
if (line[i] == '}')
{
brace_count--;
if (brace_count == 0 && symbol_in_progress) {
// Commit this symbol.
current_symbol.size = last_addr - current_symbol.address + 1;
g_dsp_symbol_db.AddCompleteSymbol(current_symbol);
current_symbol.address = 0xFFFF;
symbol_in_progress = false;
}
}
}
if (hex_found)
{
int hex = 0;
sscanf(line + first_hex, "%04x", &hex);
// Sanity check
if (hex > last_addr + 3 || hex < last_addr - 3) {
static int errors = 0;
INFO_LOG(DSPLLE, "Got Insane Hex Digit %04x (%04x) from %s", hex, last_addr, line);
errors++;
if (errors > 10)
{
fclose(f);
return false;
}
}
else
{
// if (line_counter >= 200 && line_counter <= 220)
// NOTICE_LOG(DSPLLE, "Got Hex Digit %04x from %s, line %i", hex, line, line_counter);
if (symbol_in_progress && current_symbol.address == 0xFFFF)
current_symbol.address = hex;
line_to_addr[line_counter] = hex;
addr_to_line[hex] = line_counter;
last_addr = hex;
}
}
lines.push_back(TabsToSpaces(4, line));
line_counter++;
}
fclose(f);
return true;
}
void AutoDisassembly(u16 start_addr, u16 end_addr)
{
AssemblerSettings settings;
settings.show_pc = true;
settings.show_hex = true;
DSPDisassembler disasm(settings);
u16 addr = start_addr;
const u16 *ptr = (start_addr >> 15) ? g_dsp.irom : g_dsp.iram;
while (addr < end_addr)
{
line_to_addr[line_counter] = addr;
addr_to_line[addr] = line_counter;
std::string buf;
if (!disasm.DisOpcode(ptr, 0, 2, &addr, buf))
{
ERROR_LOG(DSPLLE, "disasm failed at %04x", addr);
break;
}
//NOTICE_LOG(DSPLLE, "added %04x %i %s", addr, line_counter, buf.c_str());
lines.push_back(buf);
line_counter++;
}
}
void Clear()
{
addr_to_line.clear();
line_to_addr.clear();
lines.clear();
line_counter = 0;
}
} // namespace DSPSymbols