GEM5 vm GDB debug

README.adoc

@@ -371,7 +371,7 @@ When you start interacting with QEMU hardware, it is useful to see what is going
 This is of course trivial since QEMU is just an userland program on the host, but we make it a bit easier with:
 
 ....
-./run -q
+./run -D
 ....
 
 Then you could:
@@ -1361,7 +1361,7 @@ Related threads:
 ===== GEM5 x86 best attempt
 
 ....
-./configure && ./build -a x86_64-gem5
+./configure && ./build -a x86_64 -g
 ./run -a x86_64 -g
 ....
 

run

@@ -4,7 +4,7 @@ set -e
 
 # CLI handling.
 arch=x86_64
-debug_qemu=''
+debug_vm=''
 kgdb=false
 nographic=false
 # norandmaps: Don't use address space randomization. Equivalent to echo 0 > /proc/sys/kernel/randomize_va_space.
@@ -16,7 +16,7 @@ extra_flags=''
 gem5=false
 initrd=false
 root=''
-while getopts a:de:giknqt:x OPT; do
+while getopts a:Dde:giknt:x OPT; do
   case "$OPT" in
     a)
       arch="$OPTARG"
@@ -24,6 +24,9 @@ while getopts a:de:giknqt:x OPT; do
     d)
       extra_flags="$extra_flags -S -s"
       ;;
+    D)
+      debug_vm='gdb -q -ex start --args'
+      ;;
     e)
       extra_append="$extra_append $OPTARG"
       ;;
@@ -45,9 +48,6 @@ while getopts a:de:giknqt:x OPT; do
       extra_flags="$extra_flags -nographic"
       nographic=true
       ;;
-    q)
-      debug_qemu='gdb -q -ex start --args'
-      ;;
   esac
 done
 shift "$(($OPTIND - 1))"
@@ -68,6 +68,7 @@ M5_PATH='$(pwd)/gem5/gem5-system' \
   elif [ "$arch" = arm ]; then
     cmd="\
 M5_PATH='$(pwd)/gem5/gem5-system' \
+$debug_vm \
 '${gem5_dir}/build/ARM/gem5.opt' \
 '${gem5_dir}/configs/example/fs.py' \
 --command-line='earlyprintk=pl011,0x1c090000 console=ttyAMA0 lpj=19988480 norandmaps rw loglevel=8 mem=512MB root=/dev/sda $extra_append' \
@@ -82,7 +83,7 @@ else
   buildroot_out_dir="./buildroot/output.${arch}~"
   images_dir="$buildroot_out_dir/images"
   qemu_common="\
-$debug_qemu \
+$debug_vm \
 $buildroot_out_dir/host/usr/bin/qemu-system-${arch} \
 -m 128M \
 -monitor telnet::45454,server,nowait \