view docs/manual/x227.html @ 396:d0c0fede5021

Update to gcc6809lw patch which may help compilation of some sources Due to persistent random compiler crashes and errors related to "M_REGS", this patch update (4.6.4-2) essentially removes the varius constraints allowing the "soft registers" in most operations. It was causing more problems than it solved and it is not clear that the logic behind those soft registers even makes sense any more. This patch also fixes a bogus comparison related to selecting the right size for a constant. Instead of the excessively clever comparison scheme that was previously in use, the comparisons have been replaced with straight forward comparisions for the top and bottom of the relevant 2's complement ranges.
author William Astle <lost@l-w.ca>
date Mon, 20 Jul 2015 22:32:41 -0600
parents fc166b3bbae3
children
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>LWASM accepts plain text files in a relatively free form. It can handle
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>Each line may start with a symbol. If a symbol is present, there must not
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>The op code is separated from the symbol by whitespace. If there is
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If applicable, the operand follows separated by whitespace. Following the
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> It is important to note that operands cannot contain any whitespace
except in the case of delimited strings.  This is because the first
whitespace character will be interpreted as the separator between the
operand column and the comment.  This behaviour is required for approximate
source compatibility with other 6x09 assemblers.  </P
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>A comment can also be introduced with a * or a ;. The comment character is
optional for end of statement comments. However, if a symbol is the only
thing present on the line other than the comment, the comment character is
mandatory to prevent the assembler from interpreting the comment as an opcode.</P
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>For compatibility with the output generated by some C preprocessors, LWASM
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>The opcode is not treated case sensitively. Neither are register names in
the operand fields. Symbols, however, are case sensitive.</P
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> As of version 2.6, LWASM supports files with line numbers.  If line
numbers are present, the line must start with a digit.  The line number
itself must consist only of digits.  The line number must then be followed
by either the end of the line or exactly one white space character.  After
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