mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-28 10:59:16 -04:00
Matthew Stanley
59 lines
2.3 KiB
Python
59 lines
2.3 KiB
Python
"""Dump the 4 cursor handler stubs at 0x800321{5C,7C,9C,BC}."""
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import socket, json, struct
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s = socket.create_connection(('127.0.0.1', 4370), timeout=10)
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def send(p):
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s.sendall((json.dumps(p)+'\n').encode())
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buf = b''
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while True:
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c = s.recv(1<<20)
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if not c: break
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buf += c
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if buf.strip().endswith(b'}'):
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try: return json.loads(buf.decode())
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except: continue
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def disasm_word(w, pc):
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op = (w >> 26) & 0x3f
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rs = (w >> 21) & 0x1f
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rt = (w >> 16) & 0x1f
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rd = (w >> 11) & 0x1f
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sa = (w >> 6) & 0x1f
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fn = w & 0x3f
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imm = w & 0xffff
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simm = imm if imm < 0x8000 else imm - 0x10000
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target = (w & 0x3ffffff)
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jal_target = ((pc + 4) & 0xF0000000) | (target << 2)
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if op == 0:
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if fn == 0 and w == 0: return 'nop'
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if fn == 0x21: return f'addu ${rd}, ${rs}, ${rt}'
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if fn == 0x24: return f'and ${rd}, ${rs}, ${rt}'
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if fn == 0x25: return f'or ${rd}, ${rs}, ${rt}'
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if fn == 0x09: return f'jalr ${rd}, ${rs}'
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if fn == 0x08: return f'jr ${rs}'
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if op == 0x02: return f'j 0x{jal_target:08X}'
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if op == 0x03: return f'jal 0x{jal_target:08X}'
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if op == 0x04: return f'beq ${rs}, ${rt}, +0x{(imm<<2)&0xffff:04X}'
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if op == 0x05: return f'bne ${rs}, ${rt}, +0x{(imm<<2)&0xffff:04X}'
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if op == 0x09: return f'addiu ${rt}, ${rs}, {simm}'
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if op == 0x23: return f'lw ${rt}, {simm}(${rs})'
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if op == 0x2b: return f'sw ${rt}, {simm}(${rs})'
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if op == 0x0d: return f'ori ${rt}, ${rs}, 0x{imm:X}'
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if op == 0x0f: return f'lui ${rt}, 0x{imm:X}'
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return f'<unk op {op:02X}>'
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print('=== full 0x80032xxx stubs (32 bytes each) ===')
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for base, lbl in [(0x8003215C, 'cursor=4 stub @8003215C'),
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(0x8003217C, 'cursor=5 stub @8003217C'),
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(0x8003219C, 'cursor=6 stub @8003219C'),
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(0x800321BC, 'extra stub @800321BC'),
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(0x800321DC, 'next @800321DC')]:
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rr = send({'id':1,'cmd':'read_ram','addr':f'0x{base:08X}','len':0x40})
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b = bytes.fromhex(rr.get('hex',''))
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print(f'\n -- {lbl} --')
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for i in range(0, len(b), 4):
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if i + 4 > len(b): break
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w = struct.unpack('<I', b[i:i+4])[0]
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print(f' 0x{base+i:08X}: 0x{w:08X} {disasm_word(w, base+i)}')
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s.close()
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