mirror of
https://github.com/zeldaret/oot3d.git
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gamestabled
7e74f2d3f5
* lowercase folders * rename source to src * delete upper case folders * fix submodules
70 lines
2.2 KiB
Python
70 lines
2.2 KiB
Python
# convert exefs to elf
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import os
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import struct
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import subprocess
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import sys
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if 'DEVKITARM' not in os.environ:
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print('DEVKITARM environment variable is not set!')
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sys.exit(1)
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DEVKITARM = os.environ.get('DEVKITARM')
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CC = DEVKITARM + "/bin/arm-none-eabi-gcc"
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CP = DEVKITARM + "/bin/arm-none-eabi-g++"
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OC = DEVKITARM + "/bin/arm-none-eabi-objcopy"
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LD = DEVKITARM + "/bin/arm-none-eabi-ld"
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BASEROMDIR = 'baserom/'
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WORKDIR = BASEROMDIR + 'workdir/'
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os.makedirs(WORKDIR, exist_ok=True)
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with open(BASEROMDIR + "exheader.bin", "rb") as f:
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exh = f.read(64)
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(textBase, textPages, roPages, rwPages, bssSize) = struct.unpack('16x ii 12x i 12x i 4x i', exh)
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textSize = textPages * 0x1000
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roSize = roPages * 0x1000
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rwSize = rwPages * 0x1000
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bssSize = (int(bssSize / 0x1000) + 1) * 0x1000
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# print("textBase: {:08x}".format(textBase))
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# print("textSize: {:08x}".format(textSize))
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# print("roSize: {:08x}".format(roSize))
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# print("rwSize: {:08x}".format(rwSize))
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# print("bssSize: {:08x}".format(bssSize))
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if (textBase != 0x100000):
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print('WARNING: textBase mismatch, might be an encrypted exheader file.')
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exefsPath = BASEROMDIR + '/exefs/'
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with open(exefsPath + 'code.bin', "rb") as f:
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text = f.read(textSize)
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ro = f.read(roSize)
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rw = f.read(rwSize)
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with open('tools/e2elf.ld', 'r') as f:
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ldscript = f.read()
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ldscript = ldscript.replace('%memorigin%', str(textBase))
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ldscript = ldscript.replace('%bsssize%', str(bssSize))
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with open(WORKDIR + 'e2elf.ld', 'w') as ldfile:
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ldfile.write(ldscript)
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with open(WORKDIR + 'text.bin', 'wb') as textfile:
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textfile.write(text)
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with open(WORKDIR + 'ro.bin', 'wb') as rofile:
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rofile.write(ro)
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with open(WORKDIR + 'rw.bin', 'wb') as datafile:
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datafile.write(rw)
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objfiles = []
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for pair in (('text', 'text'), ('ro', 'rodata'), ('rw', 'data')):
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desc, sec_name = pair
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obj_name = f'{WORKDIR}{desc}.o'
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subprocess.run([OC, '-I', 'binary', '-O', 'elf32-littlearm', '--rename-section', f'.data=.{sec_name}', f'{WORKDIR}{desc}.bin', obj_name])
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objfiles.append(obj_name)
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subprocess.run([LD, '--accept-unknown-input-arch', '-T', f'{WORKDIR}e2elf.ld', '-o', f'{BASEROMDIR}baserom.elf'] + objfiles)
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