Op 30-06-18 om 21:51 schreef Christo:
I'm trying to figure out how to fix bug 33914. This bug causes gdb to read variable addresses from flash, not RAM. Looking at the DWARF info, the address of a variable is written as a word, while gdb expects a prefixed address ($800000 + address) to indicate a RAM address, so the size of the address needs to be larger than 16 bits. In dbgdwarf.pas it appears as if the size of addresses are taken from pint/puint in globtype.pas and aitconst_ptr_unaligned in aasmtai.pas, all of which are 16 bit sizes for AVR.
Of course all instances pint/puint types and aitconst_ptr_unaligned constants are appended with "_d" as part of this indirection. A patch with this approach is attached to the bug report.
This appears to work correctly, but I'm not sure this is an elegant way of fixing the problem. Any comments or hints on how to fix the issue more elegantly?
Has been a long time ago, but my guess is that in some DWARF-header there is an offset for the memory-locations. (The unit-info maybe?)
You should have a look at the Dwarf-specs. And maybe have a look at other platforms, what is generated there.
Regards, Joost. _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
