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Fix crash on listing when nested noexpand macros are used Macros flagged noexpand were causing a segfault during listing. The problem was incorrect accounting for nesting levels for noexpand macros causing the listing handler to fall off the end of the program in certain circumstances and in other circumstances it would fail to suppress expansion. Both the segfault in the case of misbehaviour and the misbhaviour itself are corrected with this update. If you do not use nested noexpand macros, this bug has no effect.
author William Astle <lost@l-w.ca>
date Sat, 25 May 2013 13:35:46 -0600
parents 155799f6cfa5
children c4853a54b4a1
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>LWASM supports generating a proprietary object file format which is
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>Object files also support the concept of sections which are not valid
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>Object files are very flexible in that they allow references that are not
known at assembly time to be resolved at link time.  However, because the
addresses of such references are not known at assembly time, there is no way
for the assembler to deduce that an eight bit addressing mode is possible. 
That means the assember will default to using sixteen bit addressing
whenever an external or cross-section reference is used.</P
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>As of LWASM 2.4, it is possible to force direct page addressing for an
external reference.  Care must be taken to ensure the resulting addresses
are really in the direct page since the linker does not know what the direct
page is supposed to be and does not emit errors for byte overflows.</P
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>It is also possible to use external references in an eight bit immediate
mode instruction.  In this case, only the low order eight bits will be used. 
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