IDA2GC.py

'''
GameCube .map goes like this
.init section layout, symbol section header w/e
list all symbols
\r\n\r\n
x12 w/e

then memory map, then linker symbols

so we need to extract all symbols and their section, and then print it out as specified
'''

from os import listdir

data = open("nddemo.elf.map", "rb").read()
data = data.split("\r\n\r\n")
header = data[0]
functions = data[2]
header = header.strip()
header_map = {}
header_data = []
for entry in header.split("\r\n")[1:]:
    line = entry.strip()
    for i in range(4):
        line = line.replace("  ", " ")
    segment = int(line.split(":")[0], 16)
    segname = line.split(" ")[2]
    header_map[segment] = segname
    length = int(line.split(" ")[1][:-1], 16)
    header_data.append([segment, segname, length])
    

functions = functions.strip()
function_list = []
for entry in functions.split("\r\n"):
    line = entry.strip()
    for i in range(4):
        line = line.replace("  ", " ")
    segment = int(line.split(":")[0], 16)
    address = int(line.split(":")[1].split(" ")[0], 16)
    symbol = " ".join(line.split(" ")[1:])

    function_list.append([segment, address, symbol])
    
#assuming that IDA is sane and spits out in order
last_segment = 0xFFFFFFFF #placeholder for check
constants = []
segment_starts = [function_list[0][1]]

pos = 0;size = 0

for symbol in function_list:
    if symbol[0] != last_segment: #we're in new segment, print header
        if symbol[0] != 0 and header_map[symbol[0]] != ".prgend":
            if last_segment != 0xFFFFFFFF:
                print
                segment_starts.append(symbol[1])
            print
            print("%s section layout" % header_map[symbol[0]]) #".init"
            print("  Starting        Virtual")
            print("  address  Size   address")
            print("  -----------------------")
        last_segment = symbol[0]
    if symbol[0] != 0 and header_map[symbol[0]] != ".prgend":
        print("  %08x %06x %08x %2d %s \t%s" % (symbol[1], 0, symbol[1], 4, symbol[2], "main.o"))
    else:
        constants.append(symbol)

print;print
print("Memory map:")
print(" " * 19 + "Starting Size     File")
print(" " * 19 + "address           Offset")
for i in range(len(header_data) - 1):
    print("%s  %08x %08x %08x" % (header_data[i][1].rjust(17), segment_starts[i], header_data[i][2], 0))
print("   .debug_srcinfo           000000 00000000")
print("   .debug_sfnames           000000 00000000")
print("           .debug           3169b4 00154ad8")
print("            .line           04db98 00106f40")
print;print
print("Linker generated symbols:")
for entry in constants:
    print("%s %08x" % (entry[2].lstrip("Abs ").rjust(25), entry[1]))
print