I'm seeing a segmentation fault in gcc-arm-none-eabi-8-2018-q4-major when I try to debug a binary written in Rust (it's actually the TockOS kernel).
Rust is actually using LLVM nightly to generate the binary. I wonder if that's causing issues.
I'd gladly upload the .elf file here but the server is giving me a 500 error message
This is the repository: https://github.com/dc740/tock
It will auto-download all the required tools to compile as long as rustup command is installed and available
Here is how I'm running gdb
~/CIAA/gcc-arm-none-eabi-8-2018-q4-major/bin/arm-none-eabi-gdb target/thumbv7em-none-eabi/release/edu-ciaa.elf -x gdb_from_commandline_startup_commands
GNU gdb (GNU Tools for Arm Embedded Processors 8-2018-q4-major) 18.104.22.16881213-git
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "--host=x86_64-linux-gnu --target=arm-none-eabi".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
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/home/dc740/.gdbinit:1582: Error in sourced command file:
Scripting in the "Python" language is not supported in this copy of GDB.
Reading symbols from target/thumbv7em-none-eabi/release/edu-ciaa.elf...
Segmentation fault (core dumped)
Loading the .elf works fine. Apparently the segmentation fault appears when I try to connect to the openocd instance
OpenOCD is running like this
openocd -c "gdb_port 3333" -c "telnet_port 4444" -c "tcl_port 6666" -f ftdi_lpc4337.cfg
and the gdb commands I'm running to connect to it are:
target remote localhost:3333set mem inaccessible-by-default offmonitor arm semihosting enablemonitor halt
I also tried to use gcc-arm-none-eabi-7-2018-q2-update and to my surprise this version works almost OK.
I'm getting a lot of these errors
warning: (Internal error: pc 0x1a00350c in read in psymtab, but not in symtab.)
I'm fully aware that these are all bugs in the toolchain, but I was wondering if anyone could give me a hint on how to workaround them, or help getting them fixed, since they are immensely blocking my progress.