Hi Kim,

Thank you very much your binutils and gcc porting tutorials. These help me very much to understand the binutils and gcc.

I have a few questions about the gcc porting.

I was trying to port the chilli architecture on gcc 11.2 by following the steps you showed in the youtube tutorial. After fixing some replaced types that introduced in the newer version, I met a segmentation fault when building the gcc. The error is like this:

/home/myname/gcc/build/./gcc/xgcc -B/home/myname/gcc/build/./gcc/ -xc -nostdinc /dev/null -S -o /dev/null -fself-test=../../src/gcc/testsuite/selftests
cc1: internal compiler error: Segmentation fault
0x1077d78 crash_signal
        ../../src/gcc/toplev.c:327
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.

Do you have any idea what is causing this error?
I tried to use gdb to track which line causes this error, and it shows that it gives out from a strcmp() function in the "../../src/gcc/gcc.c", I tried to print the string that it is comparing, but it is having value "-", so I think it is not accessing a null pointer?

If I am trying to port a gcc on a toy architecture, which version of gcc will you recommend me to port to? Should I use version 8.4 like you did, or 9.4?

Thank you very much again.

Thank you very much for the wonderful effort in creating the understanding for gcc backend port.

Questoin:

• Do we have standard ISA and ABI document for this architecture?