73 lines
2.4 KiB
Python
73 lines
2.4 KiB
Python
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from collections import OrderedDict
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origin = 0x2040
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pos = origin
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parts = []
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def emit(name, hex_bytes):
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global pos
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data = bytes.fromhex(hex_bytes)
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parts.append((pos, name, data))
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pos += len(data)
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def emit_nops(name, count):
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emit(name, '90 ' * count)
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# Outer wrapper at 13f8:2040. Existing relocation operand at 0x204E requires CALLF starting at 0x204D.
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emit('outer_push_bp', '55')
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emit('outer_mov_bp_sp', '8B EC')
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emit_nops('outer_padding', 10)
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emit('outer_call_helper', '9A FF FF 00 00')
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emit('outer_pop_bp', '5D')
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emit('outer_retf', 'CB')
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# Helper body at 13f8:2054. Existing relocation operands at 0x20BB and 0x20CF stay as CALLF sites.
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emit('helper_push_bp', '55')
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emit('helper_mov_bp_sp', '8B EC')
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emit('helper_push_bx', '53')
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emit('helper_push_es', '06')
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emit('helper_mov_ax_dbg_off', 'A1 2C 71')
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emit('helper_or_ax_dbg_seg', '0B 06 2E 71')
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emit('helper_jz_skip_seed', '74 60')
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emit('helper_les_bx_arg1', 'C4 5E 0C')
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emit('helper_sub_bx_36', '83 EB 36')
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emit('helper_mov_ax_process_index', '26 8B 47 02')
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emit('helper_shl_ax_1a', 'D1 E0')
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emit('helper_shl_ax_1b', 'D1 E0')
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emit('helper_les_bx_name_table', 'C4 1E 30 44')
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emit('helper_add_bx_ax', '03 D8')
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emit('helper_mov_cx_name_off', '26 8B 0F')
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emit('helper_mov_dx_name_seg', '26 8B 57 02')
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emit('helper_les_bx_arg1_again', 'C4 5E 0C')
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emit('helper_sub_bx_36_again', '83 EB 36')
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emit('helper_push_third_seg', '26 FF B7 E3 00')
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emit('helper_push_third_off', '26 FF B7 E1 00')
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emit('helper_push_frame_seg', '26 FF B7 DC 00')
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emit('helper_push_frame_off', '26 FF B7 DA 00')
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emit('helper_push_cursor_seg', '26 FF B7 D8 00')
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emit('helper_push_cursor_off', '26 FF B7 D6 00')
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emit('helper_push_name_seg', '52')
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emit('helper_push_name_off', '51')
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emit('helper_push_dbg_seg', 'FF 36 2E 71')
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emit('helper_push_dbg_off', 'FF 36 2C 71')
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emit_nops('helper_align_to_call1', 15)
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emit('helper_call_push_current_entry', '9A FF FF 00 00')
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emit('helper_add_sp_14', '83 C4 14')
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emit('helper_push_arg2_seg', 'FF 76 12')
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emit('helper_push_arg2_off', 'FF 76 10')
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emit('helper_push_arg1_seg', 'FF 76 0E')
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emit('helper_push_arg1_off', 'FF 76 0C')
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emit('helper_call_original_hook', '9A FF FF 00 00')
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emit('helper_add_sp_08', '83 C4 08')
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emit('helper_pop_es', '07')
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emit('helper_pop_bx', '5B')
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emit('helper_pop_bp', '5D')
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emit('helper_retf', 'CB')
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emit_nops('tail_padding', 3)
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for offset, name, data in parts:
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print(f'{offset:04X} {name:<32} {data.hex(" ")}')
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print(f'final_end={pos:04X}')
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