54 lines
1.2 KiB
Python
Executable File
54 lines
1.2 KiB
Python
Executable File
#!/usr/bin/env python3
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from sys import argv, stderr
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import struct
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CR = '\r'
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ROMSIZE = 0x400000
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EMBASE = 0x320000
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try:
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rom_path, = argv[1:]
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with open(rom_path, 'rb') as f:
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rom = f.read(ROMSIZE)
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if len(rom) != ROMSIZE:
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raise ValueError
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except:
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print('USAGE: %s ROM > ASM.s' % argv[0], file=stderr)
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print(' empw PPCAsm -o Emulator.x ASM.s', file=stderr)
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exit(1)
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# read special offsets into emulator, from ConfigInfo struct
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em_entry, em_kernel_trap_table = struct.unpack_from('>LL', rom, 0x30c080)
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labels = {
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EMBASE: ['EmTop'],
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0x380000: ['EmBtm', 'OpcodeTblTop'],
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ROMSIZE: ['OpcodeTblBtm'],
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EMBASE + em_entry: ['EmEntry'],
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EMBASE + em_kernel_trap_table: ['EmKernelTrapTable'],
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}
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for k, vs in sorted(labels.items()):
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for v in vs:
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print('\texport\t%s\t; %x' % (v, k), end=CR)
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print(end=CR)
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for o in range(EMBASE, ROMSIZE+4, 4):
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try:
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lbls = labels[o]
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except KeyError:
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pass
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else:
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for lbl in lbls:
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print(lbl + ':', end=CR)
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if o == ROMSIZE:
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break
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print('\tdc.l\t$%02x%02x%02x%02x\t; %x' % (rom[o], rom[o+1], rom[o+2], rom[o+3], o), end=CR)
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