141 lines
1.9 KiB
NASM
141 lines
1.9 KiB
NASM
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format MZ
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heap 0
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stack 8000h
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entry loader:init
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include 'loader.inc'
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segment main use32
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start:
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call get_params
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jnc make_dump
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mov esi,_usage
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call display_string
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mov ax,4C02h
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int 21h
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make_dump:
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call symbols
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mov ax,4C00h
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int 21h
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error:
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mov esi,_error_prefix
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call display_string
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pop esi
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call display_string
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mov esi,_error_suffix
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call display_string
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mov ax,4C00h
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int 21h
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get_params:
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push ds
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mov ds,[psp_selector]
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mov esi,81h
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mov edi,params
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find_param:
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lodsb
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cmp al,20h
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je find_param
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cmp al,0Dh
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je all_params
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or al,al
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jz all_params
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cmp [es:input_file],0
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jne get_output_file
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mov [es:input_file],edi
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jmp process_param
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get_output_file:
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cmp [es:output_file],0
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jne bad_params
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mov [es:output_file],edi
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process_param:
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cmp al,22h
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je string_param
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copy_param:
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stosb
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lodsb
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cmp al,20h
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je param_end
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cmp al,0Dh
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je param_end
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or al,al
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jz param_end
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jmp copy_param
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string_param:
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lodsb
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cmp al,22h
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je string_param_end
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cmp al,0Dh
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je param_end
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or al,al
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jz param_end
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stosb
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jmp string_param
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bad_params_value:
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stc
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ret
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param_end:
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dec esi
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string_param_end:
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xor al,al
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stosb
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jmp find_param
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all_params:
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xor al,al
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stosb
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pop ds
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cmp [input_file],0
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je bad_params
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cmp [output_file],0
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je bad_params
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clc
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ret
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bad_params:
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stc
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ret
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include 'system.inc'
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include '..\symbols.inc'
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_usage db 'symbols dumper for flat assembler',0Dh,0Ah
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db 'usage: symbols <input> <output>',0Dh,0Ah
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db 0
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_error_prefix db 'error: ',0
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_error_suffix db '.',0Dh,0Ah,0
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input_file dd 0
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output_file dd 0
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input dd ?
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output_buffer dd ?
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output_handle dd ?
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psp_selector dw ?
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environment_selector dw ?
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memory_handles_count dd ?
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memory_handles rd 400h
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params rb 1000h
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segment buffer_segment
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buffer = (buffer_segment-main) shl 4
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db 1000h dup ?
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segment stack_segment
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stack_bottom = (stack_segment-main) shl 4
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db 4000h dup ?
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stack_top = stack_bottom + $
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