[sdcc-devel] [ sdcc-Feature Requests-1425402 ] Regression test support for PIC platforms

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Feature Requests item #1425402, was opened at 2006-02-06 16:56
Message generated for change (Comment added) made by sdattalo
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Category: None
Group: None
Status: Open
Priority: 5
Submitted By: Borut Razem (borutr)
Assigned to: Borut Razem (borutr)
Summary: Regression test support for PIC platforms

Initial Comment:
Add regression test support for PIC14 and PIC16
platforms, using the gpsim simulator.

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>Comment By: Scott Dattalo (sdattalo)
Date: 2006-02-06 17:41

Message:
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Hi Borut,

gpsim and gpasm have several new features that will probably
be useful for SDCC regression tests. You may be aware of
these already, but here's a brief overview.

It's possible to embed simulation commands into a .asm file
and have gpsim execute them. (This feature works only for
relocatable mode, btw.) Probably the most useful feature is
a simulation assertion, but essentially *all* of gpsim's
commands are available. gpsim's regression/ subdirectory in
CVS provides several examples. In particular, check out the
for testing logic modules. Here's an example where the lower
3 bits of portb pass through several xor logic gates (that
effectively form a 3-input XOR gate) and are read on portc
bit 2:

	incf	PORTB,F
   .assert "((portc>>2) & 1) == ( ((portb>>2) ^ (portb>>1) ^
portb) & 1)"

But in general, the gpasm .assert directive is turned into a
gpsim break point that when encountered will halt the
simulation if the expression evaluates false.

Scott

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