156 lines
3.0 KiB
PHP
156 lines
3.0 KiB
PHP
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; Listing generator, which shows generated bytes next to offset in the output file
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; and assumed address in memory (limited to the constant term if an address is a linear polynomial).
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; The listing is stored in a file with .LST extension.
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define Listing? Listing
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namespace Listing
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virtual at 0
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HexDigits:: db '0123456789ABCDEF'
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end virtual
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spc0 := ''
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repeat 34, i:0
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spc#% := spc#i bappend ' '
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end repeat
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collected_source = ''
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collected_$ = $
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collected_$% = $%
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collected_$%% = $%%
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calminstruction generate
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local source, $, $%, $%%
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reverse:
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take source, collected_source
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take $, collected_$
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take $%, collected_$%
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take $%%, collected_$%%
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jyes reverse
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local offset
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compute offset, $%
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main:
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take , $%
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take , $%%
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take $%, $%
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jno done
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check source
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jno next
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local undefined_bytes, defined_bytes
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compute undefined_bytes, $% - $%%
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compute defined_bytes, $%% - offset
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compute offset, $%
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local counter, digit
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compute counter, 16
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emit 1, '['
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print_address:
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compute counter, counter - 1
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compute digit, ($ shr (counter shl 2)) and 0Fh
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load digit, HexDigits:digit, 1
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emit 1, digit
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check counter
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jyes print_address
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emit 2, '] '
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check defined_bytes > 0
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jyes bytes_present
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emit 34, spc34
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jump print_source
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bytes_present:
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compute counter, 8
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print_offset:
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compute counter, counter - 1
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compute digit, (($%-undefined_bytes-defined_bytes) shr (counter shl 2)) and 0Fh
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load digit, HexDigits:digit, 1
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emit 1, digit
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check counter
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jyes print_offset
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local column, byte
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emit 2, ': '
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compute column, 0
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print_bytes:
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check defined_bytes > 0
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jno fill_up
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load byte, $% - undefined_bytes - defined_bytes, 1
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check column = 8
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jno print_byte
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compute column, 0
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emit 1, ' '
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emit lengthof source, source
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emit 2, 0A0Dh
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emit 29, spc29
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compute source, ''
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print_byte:
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compute digit, byte shr 4
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load digit, HexDigits:digit, 1
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emit 1, digit
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compute digit, byte and 0Fh
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load digit, HexDigits:digit, 1
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emit 1, digit
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emit 1, ' '
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compute defined_bytes, defined_bytes - 1
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compute column, column + 1
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jump print_bytes
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fill_up:
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check column >= 8
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jyes print_source
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emit 3, spc3
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compute column, column + 1
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jump fill_up
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print_source:
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emit 1, ' '
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emit lengthof source, source
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emit 2, 0A0Dh
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next:
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take , source
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take , $
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jump main
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done:
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end calminstruction
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end namespace
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postpone ?
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purge ?
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virtual as 'lst'
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Listing.generate
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end virtual
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end postpone
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calminstruction ? &line&
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local tmp
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arrange tmp, line
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stringify tmp
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take Listing.collected_source, tmp
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compute tmp, $ scale 0
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take Listing.collected_$, tmp
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compute tmp, $%
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take Listing.collected_$%, tmp
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compute tmp, $%%
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take Listing.collected_$%%, tmp
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assemble line
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end calminstruction
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calminstruction restartout? origin
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arrange origin, =restartout origin
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assemble origin
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reset:
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take , Listing.collected_source
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take , Listing.collected_$
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take , Listing.collected_$%
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take , Listing.collected_$%%
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jyes reset
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end calminstruction
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