系統 - VxWorks - 如何透過GDB Debug

參考資訊：
https://forums.windriver.com/t/vxworks-software-development-kit-sdk/43
https://d13321s3lxgewa.cloudfront.net/downloads/wrsdk-vxworks7-docs/2309/README_qemu.html

app.c

#include <stdio.h>

int main(int argc, char **argv)
{
    printf("GDB Test\n");
    return 0;
}

編譯

$ source ~/wrsdk-vxworks7-qemu/sdkenv.sh
$ wr-cc --version
    clang version 16.0.0.1

$ wr-cc app.c -o app -ggdb

啟動QEMU

$ cd
$ sudo python3 -m pyftpdlib -p 21 -u target -P vxTarget -i 127.0.0.1 -d $HOME -w

$ cd ~/wrsdk-vxworks7-qemu
$ qemu-system-x86_64 -m 512M -kernel vxsdk/bsps/itl_generic_3_0_0_3/vxWorks \
    -net nic -net user,hostfwd=tcp::1534-:1534,hostfwd=tcp::2345-:2345 \
    -display none -serial stdio -monitor none \
    -append "bootline:fs(0,0)host:vxWorks h=10.0.2.2 e=10.0.2.15 u=target pw=vxTarget o=gei0"

GDB Debug

$ gdb

(gdb) target extended-remote tcp:127.0.0.1:2345
    Remote debugging using tcp:127.0.0.1:2345

(gdb) file app
    Reading symbols from app...

(gdb) b main
    Breakpoint 1 at 0x201416: file app.c, line 5.

(gdb) set remote exec-file /host.host/app
(gdb) r
    Starting program: /home/steward/Downloads/app 
    Reading /lib/ld64.so.1 from remote target...
    warning: File transfers from remote targets can be slow. Use "set sysroot" to access files locally instead.
    warning: Unable to find dynamic linker breakpoint function.
    GDB will be unable to debug shared library initializers
    and track explicitly loaded dynamic code.
    Reading /host.host/app from remote target...
    Reading /lib/libc.so.1 from remote target...

    Breakpoint 1, main (argc=1, argv=0x266000) at app.c:5
    5	    printf("GDB Test\n");

(gdb) list
    1	#include <stdio.h>
    2	
    3	int main(int argc, char **argv)
    4	{
    5	    printf("GDB Test\n");
    6	    return 0;
    7	}