Hi,
Στις 10/2/2021 2:25 μ.μ., ο/η Christo Crause έγραψε:
On Wed, Feb 10, 2021 at 12:47 PM Dimitrios Chr. Ioannidis via
fpc-devel <fpc-devel@lists.freepascal.org
<mailto:fpc-devel@lists.freepascal.org>> wrote:
Hi,
I read at compiler/systems/i_embed.pas the AVR systeminfo, is the
only one that, has as default "dbg : dbg_dwarf3". The other embed
systems that uses dwarf ( ARM, MIPSEL, i8086, m68k, RISCV32/64,
XTENSA,
Z80 ), all have as default "dbg : dbg_dwarf2".
The AVR has problems with dbg_dwarf2 ? If not, could you please
change the AVR systeminfo to dwarf2 also for consistency ?
That was a fix for compiling controller units with lots of symbols,
refer to this discussion thread:
https://www.mail-archive.com/fpc-devel@lists.freepascal.org/msg35416.html
<https://www.mail-archive.com/fpc-devel@lists.freepascal.org/msg35416.html>
Dwarf2 is fine in general, unless the address (I think address in
dwarf debug section, the details are a bit hazy in my memory) of
symbols exceed 65535. Dwarf3 offers a larger data type for this scenario.
I'm using ppcrossavr with systeminfo default "dbg : dbg_dwarf2" with
no problems. If I remember correctly, IMHO, fixing the issue 33914 (
https://bugs.freepascal.org/view.php?id=33914 ) had the collateral
effect to fixing also the above.
For test, I just debugged a physical atmega32u2 mcu with Lazarus with
no problems at all. Also for test, I builded an avr35 subarch ppcrossavr
and also debugged a physical atmega32u2 mcu with no problems.
ppcrossavr ( from trunk ) builded on Windows 10 x64 ( with avr binutils
2.34 from https://blog.zakkemble.net/avr-gcc-builds/ ) :
make.exe clean crossall crossinstall CPU_TARGET=avr OS_TARGET=embedded
SUBARCH=avr35 INSTALL_PREFIX=G:\Programming\dimitris\tools\
fpc-trunk CROSSOPT="-g -godwarfsets -gw2 -O1 -dDEBUG"
CROSSBINDIR=G:\Programming\dimitris\tools\fpc-trunk\bin\x86_64-win64
BINUTILSPREFIX=avr-embedded-
regards,
--
Dimitrios Chr. Ioannidis
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