search for: mmcu

...th -nostdlibinc (which makes it necessary to point clang to the header file location via -isystem /opt/avr/avr-libc/avr/include) and --gcc-toolchain I can compile the minimum example code. clang++ --target=avr -nostdlibinc -isystem /opt/avr/avr-libc/avr/include --gcc-toolchain=/opt/avr/avr-gcc -mmcu=atmega328p -c main.cpp -o main.o However, when I'm running a compilation on a more complicated embedded programm I get a lot of troubling warnings, e.g. warning: unknown attribute '__progmem__' ignored [-Wunknown-attributes] (which are troubling me, because if all those string cons...

...t; -DCMAKE_BUILD_TYPE=Release ../llvm make -j8 sudo make install Next I created a pretty empty main.cpp and tried to compile that: #include <stdint.h> int main() { for(;;) { } return 0; } Here's the result of attempting the compilation ... $ clang++ --target=avr -mmcu=atmega328p -c main.cpp -o main.o -v clang version 11.0.0 (https://github.com/llvm/llvm-project 177dd63c8d742250dac6ea365e7c30f0fbab3257) Target: avr Thread model: posix InstalledDir: /usr/local/bin Found candidate GCC installation: /usr/lib/gcc/avr/5.4.0 Selected GCC installation: /usr/...

Hi Pete, > https://reviews.llvm.org/D36331 Congratulations! > Following shortly: > * Clang driver and target triple support. great, then it is able to generate ELF by $ /opt/llvm-svn/bin/clang -c --target=arc hello.c -o hello.o -mmcu=XXX and do you plan to implement ARC target for lld[1]? it is a good testcase: flash them directly to the chip[2], or simulator[3]. 1. ARC target for lld https://github.com/llvm-mirror/lld/blob/master/ELF/Arch/ARC.cpp 2. ARC platforms https://embarc.org/platforms.html 3. https://github.com/...

...opsys.com> Cc: llvm-dev at lists.llvm.org <llvm-dev at lists.llvm.org> Subject: Re: RE: [RFC] Adding ARC backend Hello Leslie, >> * Clang driver and target triple support. >great, then it is able to generate ELF by $ /opt/llvm-svn/bin/clang -c --target=arc hello.c -o hello.o -mmcu=XXX Basically yes, but we have not implemented the integrated assembler yet, so currently rely on an external ARC gnu toolchain. Plus, there are a wide variety of subtargets that are basically unsupported until we start adding configuration support. https://github.com/foss-for-synopsys-dwc-arc-pr...

...Hi Dylan, > > I used the following commandline: > > clang++ -Os -DF_OSC=20000000 -DF_CPU=20000000 --target=avr -I. > -I../include0 -I../../include0 -I../../../include0 -I../../include0/std > -I../include0/std -I../../../include0/std -I../../3rdparty/boost > -I/usr/avr/include -mmcu=atmega328p > /home/lmeier/Projekte/wmucpp/clang/bm00/bm00.cc -S -emit-llvm --output > bm00.ir > > Please find the IR attached in the file bm00.ir > > Thanks, > Wilhelm > > > Am 30.03.20 um 13:44 schrieb Dylan McKay: > > Hey Wilhelm, > > > > Could you...

...wing commandline: >> >> clang++ -Os -DF_OSC=20000000 -DF_CPU=20000000 --target=avr  -I. >> -I../include0 -I../../include0 -I../../../include0 -I../../include0/std >> -I../include0/std -I../../../include0/std -I../../3rdparty/boost >> -I/usr/avr/include -mmcu=atmega328p >> /home/lmeier/Projekte/wmucpp/clang/bm00/bm00.cc -S -emit-llvm --output >> bm00.ir <http://bm00.ir> >> >> Please find the IR attached in the file bm00.ir <http://bm00.ir> >> >> Thanks, >>  Wilhelm >> >&g...

...es due to multiple code/data address spaces as in my case of a Harvard machine. As far as I can tell, the only upstream backend that is of a similar configuration is AVR. I can reproduce the same `.debug_aranges` table as my target with the following simple example: $ clang -target avr -mmcu=attiny104 -S -o - -g -gdwarf-aranges -xc - <<'EOF' char char_array[16383] = {0}; int main() { return char_array[0]; } EOF # ... .section .debug_aranges,"", at progbits .long 20 ; Length of ARange Set .short...

Hey Wilhelm, Could you post the LLVM IR generated from your C++ file? This can be achieved with 'clang -S -emit-llvm' Cheers On Sat, Mar 28, 2020 at 6:36 PM Wilhelm Meier <wilhelm.meier at hs-kl.de> wrote: > Answering partly to myself there was a extern "C" missing. > > But the register pushes ans reti are still missing. > > Whats wrong? > > Am

...gt;>> clang++ -Os -DF_OSC=20000000 -DF_CPU=20000000 --target=avr  -I. >>>> -I../include0 -I../../include0 -I../../../include0 -I../../include0/std >>>> -I../include0/std -I../../../include0/std -I../../3rdparty/boost >>>> -I/usr/avr/include -mmcu=atmega328p >>>> /home/lmeier/Projekte/wmucpp/clang/bm00/bm00.cc -S -emit-llvm --output >>>> bm00.ir <http://bm00.ir> >>>> >>>> Please find the IR attached in the file bm00.ir <http://bm00.ir> >>>> >>>>...

Hello Leslie, I think we are going to need to know a bit more about the ELF ABI for what looks like the ArcCompact before we can help you. LLD's calculation of P (the place to be relocated) is as it is in the generic ELF specification. The Rel.Offset corresponds to the ELF r_offset field. This is covered by: "For a relocatable file, the value is the byte offset from the beginning of the