To Correlate Relocatable Code Using The Address Offset - HP 16600A Series User Manual

processor and your code.
Example
A common example of this is setting a trigger on the source line
following a loop, for instance:
Line # Addr
====== ====== =====================
100 1000 for (i=0;i<10;i++)
1000
101 1002 {
1002
102 1002
1002
103 1008 }
1008
100A
1010
104 1012 printf("%d\n", foo);
1012
The instruction at 1012 will be prefetched following the BLT at
address 1010. So, setting a trigger on line #104 (address 1012)
will result in a premature trigger.
To correlate relocatable code using the address
offset
You need to adjust the source correlation tool set to compensate for
relocatable code segments or memory management units that produce
fixed code offsets.
The offset field in the trigger menu allows you to offset the symbol
address. Entering the appropriate address offset will cause the source
correlation tool set to reference the correct symbol information for the
relocatable or offset code.
To adjust for prefetches, use a trigger offset of 4 (prefetch queue
depth) to avoid triggering on prefetched instructions. This is not a
foolproof scheme, since this may result in a missed trigger if a branch
takes place between the base address and the offset address. For the
CPU32, an offset of 4 is large enough to overcome the prefetch queue.
Solutions for CPU32
Chapter 5: Symbols and Source Code in the Analyzer
Triggering on Symbols and Source Code
C source
==============================
forLoop1:
foo = foo + 100;
Assembly Source
MOVEQ #0,D3
ADD.L #100,D2
ADDQ.L #1,D3
CMP.L #10,D3
BLT forLoop1
-MOVEA.L D2,A0
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