How do to use gdbstub

Circuitsoft

I think I've figured it out, but I'm having issues with the actual debugging, now.

This is on a QuickStart board, and my serial test is running on pins 0/1.

GNU gdb (GDB) 7.3.1
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Reading symbols from /home/alex/Projects/Personal/Parallax C Library/tests/serial/ffds1/ffds1...done.
(gdb) target remote | /opt/parallax/bin/gdbstub
0x0000026c in ?? ()
(gdb) load
Loading section .boot, size 0x20 lma 0x0
Loading section .lmmkernel, size 0x788 lma 0x20
Loading section .init, size 0xb8 lma 0x7a8
Loading section .text, size 0xf30 lma 0x860
Loading section .ffds1.cog, size 0x144 lma 0x1790
Loading section .fini, size 0x3c lma 0x18d4
Loading section .hub, size 0x2c lma 0x1910
Loading section .ctors, size 0x4 lma 0x193c
Loading section .dtors, size 0x4 lma 0x1940
Transfer rate: 7 KB/sec, 61 bytes/write.
(gdb) b main
Breakpoint 1 at 0x1668: file main.c, line 4.
(gdb) c
Continuing.
error: bad initial response from debug kernel: 00
warning: Remote failure reply: E05
Ignoring packet error, continuing...
Remote 'g' packet reply is of odd length: E01
(gdb) bt
Ignoring packet error, continuing...
Remote 'g' packet reply is of odd length: E01
Ignoring packet error, continuing...
Remote 'g' packet reply is of odd length: E01
Ignoring packet error, continuing...
Remote 'g' packet reply is of odd length: E01

ersmith

gdb doesn't really work on the default branch.

If you're using the performance branch, then it does work in LMM mode (only). To start a program do:

propeller-elf-gdb foo.elf
target remote |gdbstub
load
< set any breakpoints or do other gdb commands you want here >
c

^C should interrupt the running program, provided it was compiled with -g.

Eric