// This one can load both leftover map files on game discs (like Zelda), and mapfiles
// produced by SaveSymbolMap below.
bool PPCSymbolDB::LoadMap(const std::string& filename)
{
File::IOFile f(filename, "r");
if (!f)
return false;
bool started = false;
char line[512];
while (fgets(line, 512, f.GetHandle()))
{
if (strlen(line) < 4)
continue;
char temp[256];
sscanf(line, "%255s", temp);
if (strcmp(temp, "UNUSED")==0) continue;
if (strcmp(temp, ".text")==0) {started = true; continue;};
if (strcmp(temp, ".init")==0) {started = true; continue;};
if (strcmp(temp, "Starting")==0) continue;
if (strcmp(temp, "extab")==0) continue;
if (strcmp(temp, ".ctors")==0) break; //uh?
if (strcmp(temp, ".dtors")==0) break;
if (strcmp(temp, ".rodata")==0) continue;
if (strcmp(temp, ".data")==0) continue;
if (strcmp(temp, ".sbss")==0) continue;
if (strcmp(temp, ".sdata")==0) continue;
if (strcmp(temp, ".sdata2")==0) continue;
if (strcmp(temp, "address")==0) continue;
if (strcmp(temp, "-----------------------")==0) continue;
if (strcmp(temp, ".sbss2")==0) break;
if (temp[1] == ']') continue;
if (!started) continue;
u32 address, vaddress, size, unknown;
char name[512];
sscanf(line, "%08x %08x %08x %i %511s", &address, &size, &vaddress, &unknown, name);
const char *namepos = strstr(line, name);
if (namepos != nullptr) //would be odd if not :P
strcpy(name, namepos);
name[strlen(name) - 1] = 0;
// we want the function names only .... TODO: or do we really? aren't we wasting information here?
for (size_t i = 0; i < strlen(name); i++)
{
if (name[i] == ' ') name[i] = 0x00;
if (name[i] == '(') name[i] = 0x00;
}
// Check if this is a valid entry.
if (strcmp(name, ".text") != 0 || strcmp(name, ".init") != 0 || strlen(name) > 0)
{
AddKnownSymbol(vaddress | 0x80000000, size, name); // ST_FUNCTION
}
}
Index();
return true;
}
// This one can load both leftover map files on game discs (like Zelda), and mapfiles
// produced by SaveSymbolMap below.
// bad=true means carefully load map files that might not be from exactly the right version
bool PPCSymbolDB::LoadMap(const std::string& filename, bool bad)
{
File::IOFile f(filename, "r");
if (!f)
return false;
// four columns are used in American Mensa Academy map files and perhaps other games
bool started = false, four_columns = false;
int good_count = 0, bad_count = 0;
char line[512];
while (fgets(line, 512, f.GetHandle()))
{
size_t length = strlen(line);
if (length < 4)
continue;
if (length == 34 && strcmp(line, " address Size address offset\n") == 0)
{
four_columns = true;
continue;
}
char temp[256];
sscanf(line, "%255s", temp);
if (strcmp(temp, "UNUSED")==0) continue;
if (strcmp(temp, ".text")==0) {started = true; continue;};
if (strcmp(temp, ".init")==0) {started = true; continue;};
if (strcmp(temp, "Starting")==0) continue;
if (strcmp(temp, "extab")==0) continue;
if (strcmp(temp, ".ctors")==0) break; //uh?
if (strcmp(temp, ".dtors")==0) break;
if (strcmp(temp, ".rodata")==0) continue;
if (strcmp(temp, ".data")==0) continue;
if (strcmp(temp, ".sbss")==0) continue;
if (strcmp(temp, ".sdata")==0) continue;
if (strcmp(temp, ".sdata2")==0) continue;
if (strcmp(temp, "address")==0) continue;
if (strcmp(temp, "-----------------------")==0) continue;
if (strcmp(temp, ".sbss2")==0) break;
if (temp[1] == ']') continue;
if (!started) continue;
u32 address, vaddress, size, offset, unknown;
char name[512], container[512];
if (four_columns)
{
// sometimes there is no unknown number, and sometimes it is because it is an entry of something else
if (length > 37 && line[37]==' ')
{
unknown = 0;
sscanf(line, "%08x %08x %08x %08x %511s", &address, &size, &vaddress, &offset, name);
char *s = strstr(line, "(entry of ");
if (s)
{
sscanf(s + 10, "%511s", container);
char *s2 = (strchr(container, ')'));
if (s2 && container[0]!='.')
{
s2[0] = '\0';
strcat(container, "::");
strcat(container, name);
strcpy(name, container);
}
}
}
else
{
sscanf(line, "%08x %08x %08x %08x %i %511s", &address, &size, &vaddress, &offset, &unknown, name);
}
}
// some entries in the table have a function name followed by " (entry of " followed by a container name, followed by ")"
// instead of a space followed by a number followed by a space followed by a name
else if (length > 27 && line[27] != ' ' && strstr(line, "(entry of "))
{
unknown = 0;
sscanf(line, "%08x %08x %08x %511s", &address, &size, &vaddress, name);
char *s = strstr(line, "(entry of ");
if (s)
{
sscanf(s + 10, "%511s", container);
char *s2 = (strchr(container, ')'));
if (s2 && container[0] != '.')
{
s2[0] = '\0';
strcat(container, "::");
strcat(container, name);
strcpy(name, container);
}
}
}
else
{
sscanf(line, "%08x %08x %08x %i %511s", &address, &size, &vaddress, &unknown, name);
}
const char *namepos = strstr(line, name);
if (namepos != nullptr) //would be odd if not :P
strcpy(name, namepos);
name[strlen(name) - 1] = 0;
// we want the function names only .... TODO: or do we really? aren't we wasting information here?
for (size_t i = 0; i < strlen(name); i++)
{
if (name[i] == ' ') name[i] = 0x00;
if (name[i] == '(') name[i] = 0x00;
}
// Check if this is a valid entry.
if (strcmp(name, ".text") != 0 && strcmp(name, ".init") != 0 && strlen(name) > 0)
{
vaddress |= 0x80000000;
bool good = !bad;
if (!good)
{
// check for BLR before function
u32 opcode = PowerPC::HostRead_Instruction(vaddress - 4);
if (opcode == 0x4e800020)
{
// check for BLR at end of function
opcode = PowerPC::HostRead_Instruction(vaddress + size - 4);
if (opcode == 0x4e800020)
good = true;
}
}
if (good)
{
++good_count;
AddKnownSymbol(vaddress | 0x80000000, size, name); // ST_FUNCTION
}
else
{
++bad_count;
}
}
}
Index();
if (bad)
SuccessAlertT("Loaded %d good functions, ignored %d bad functions.", good_count, bad_count);
return true;
}
// This one can load both leftover map files on game discs (like Zelda), and mapfiles
// produced by SaveSymbolMap below.
// bad=true means carefully load map files that might not be from exactly the right version
bool PPCSymbolDB::LoadMap(const std::string& filename, bool bad)
{
File::IOFile f(filename, "r");
if (!f)
return false;
// four columns are used in American Mensa Academy map files and perhaps other games
bool four_columns = false;
int good_count = 0;
int bad_count = 0;
char line[512];
std::string section_name;
while (fgets(line, 512, f.GetHandle()))
{
size_t length = strlen(line);
if (length < 4)
continue;
if (length == 34 && strcmp(line, " address Size address offset\n") == 0)
{
four_columns = true;
continue;
}
char temp[256];
sscanf(line, "%255s", temp);
if (strcmp(temp, "UNUSED") == 0)
continue;
// Support CodeWarrior and Dolphin map
if (StringEndsWith(line, " section layout\n") || strcmp(temp, ".text") == 0 ||
strcmp(temp, ".init") == 0)
{
section_name = temp;
continue;
}
// Skip four columns' header.
//
// Four columns example:
//
// .text section layout
// Starting Virtual
// address Size address
// -----------------------
if (strcmp(temp, "Starting") == 0)
continue;
if (strcmp(temp, "address") == 0)
continue;
if (strcmp(temp, "-----------------------") == 0)
continue;
// Skip link map.
//
// Link map example:
//
// Link map of __start
// 1] __start(func, weak) found in os.a __start.c
// 2] __init_registers(func, local) found in os.a __start.c
// 3] _stack_addr found as linker generated symbol
// ...
// 10] EXILock(func, global) found in exi.a EXIBios.c
if (StringEndsWith(temp, "]"))
continue;
// TODO - Handle/Write a parser for:
// - Memory map
// - Link map
// - Linker generated symbols
if (section_name.empty())
continue;
u32 address, vaddress, size, offset, alignment;
char name[512], container[512];
if (four_columns)
{
// sometimes there is no alignment value, and sometimes it is because it is an entry of
// something else
if (length > 37 && line[37] == ' ')
{
alignment = 0;
sscanf(line, "%08x %08x %08x %08x %511s", &address, &size, &vaddress, &offset, name);
char* s = strstr(line, "(entry of ");
if (s)
{
sscanf(s + 10, "%511s", container);
char* s2 = (strchr(container, ')'));
if (s2 && container[0] != '.')
{
s2[0] = '\0';
strcat(container, "::");
strcat(container, name);
strcpy(name, container);
}
}
}
else
{
sscanf(line, "%08x %08x %08x %08x %i %511s", &address, &size, &vaddress, &offset,
&alignment, name);
}
}
// some entries in the table have a function name followed by " (entry of " followed by a
// container name, followed by ")"
// instead of a space followed by a number followed by a space followed by a name
else if (length > 27 && line[27] != ' ' && strstr(line, "(entry of "))
{
alignment = 0;
sscanf(line, "%08x %08x %08x %511s", &address, &size, &vaddress, name);
char* s = strstr(line, "(entry of ");
if (s)
{
sscanf(s + 10, "%511s", container);
char* s2 = (strchr(container, ')'));
if (s2 && container[0] != '.')
{
s2[0] = '\0';
strcat(container, "::");
strcat(container, name);
strcpy(name, container);
}
}
}
else
{
sscanf(line, "%08x %08x %08x %i %511s", &address, &size, &vaddress, &alignment, name);
}
const char* namepos = strstr(line, name);
if (namepos != nullptr) // would be odd if not :P
strcpy(name, namepos);
name[strlen(name) - 1] = 0;
if (name[strlen(name) - 1] == '\r')
name[strlen(name) - 1] = 0;
// Check if this is a valid entry.
if (strlen(name) > 0)
{
// Can't compute the checksum if not in RAM
bool good = !bad && PowerPC::HostIsInstructionRAMAddress(vaddress) &&
PowerPC::HostIsInstructionRAMAddress(vaddress + size - 4);
if (!good)
{
// check for BLR before function
PowerPC::TryReadInstResult read_result = PowerPC::TryReadInstruction(vaddress - 4);
if (read_result.valid && read_result.hex == 0x4e800020)
{
// check for BLR at end of function
read_result = PowerPC::TryReadInstruction(vaddress + size - 4);
good = read_result.valid && read_result.hex == 0x4e800020;
}
}
if (good)
{
++good_count;
if (section_name == ".text" || section_name == ".init")
AddKnownSymbol(vaddress, size, name, Symbol::Type::Function);
else
AddKnownSymbol(vaddress, size, name, Symbol::Type::Data);
}
else
{
++bad_count;
}
}
}
Index();
if (bad)
SuccessAlertT("Loaded %d good functions, ignored %d bad functions.", good_count, bad_count);
return true;
}
