readme: m5 readfile

gitignore: trace-

run

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-set -e
+set -eu
 . common
 
 # CLI handling.
@@ -121,7 +121,8 @@ if "$gem5"; then
   else
     gem5_arch=ARM
   fi
-  gem5_cpt_dir="./m5out/cpts/${arch}"
+  m5out_dir="${root_dir}/m5out"
+  gem5_cpt_dir="${m5out_dir}/cpts/${arch}"
   mkdir -p "$gem5_cpt_dir"
   gem5_common="\
 M5_PATH='${build_dir}/system' \
@@ -134,6 +135,7 @@ ${gem5opts} \
 --kernel='${out_dir}/build/linux-custom/vmlinux' \
 --mem-size=${memory} \
 --num-cpus='${cpus}' \
+--script='${m5out_dir}/myreadfile' \
 "
   if [ "$arch" = x86_64 ]; then
     if "$kvm"; then