From 302e43f122bcb18da32e6552d01c41261e2d0b42 Mon Sep 17 00:00:00 2001
From: Gilles Peskine <Gilles.Peskine@arm.com>
Date: Wed, 26 Feb 2020 18:25:13 +0100
Subject: [PATCH] Revert "scripts: Remove unneeded scripts"

This reverts commit ed05b29ea335dd12415b40570b31b08fa8c8bd09.
---
 scripts/memory.sh | 126 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100755 scripts/memory.sh

diff --git a/scripts/memory.sh b/scripts/memory.sh
new file mode 100755
index 000000000..3dad2899c
--- /dev/null
+++ b/scripts/memory.sh
@@ -0,0 +1,126 @@
+#!/bin/sh
+
+# Measure memory usage of a minimal client using a small configuration
+# Currently hardwired to ccm-psk and suite-b, may be expanded later
+#
+# Use different build options for measuring executable size and memory usage,
+# since for memory we want debug information.
+
+set -eu
+
+CONFIG_H='include/mbedtls/config.h'
+
+CLIENT='mini_client'
+
+CFLAGS_EXEC='-fno-asynchronous-unwind-tables -Wl,--gc-section -ffunction-sections -fdata-sections'
+CFLAGS_MEM=-g3
+
+if [ -r $CONFIG_H ]; then :; else
+    echo "$CONFIG_H not found" >&2
+    exit 1
+fi
+
+if grep -i cmake Makefile >/dev/null; then
+    echo "Not compatible with CMake" >&2
+    exit 1
+fi
+
+if [ $( uname ) != Linux ]; then
+    echo "Only work on Linux" >&2
+    exit 1
+fi
+
+if git status | grep -F $CONFIG_H >/dev/null 2>&1; then
+    echo "config.h not clean" >&2
+    exit 1
+fi
+
+# make measurements with one configuration
+# usage: do_config <name> <unset-list> <server-args>
+do_config()
+{
+    NAME=$1
+    UNSET_LIST=$2
+    SERVER_ARGS=$3
+
+    echo ""
+    echo "config-$NAME:"
+    cp configs/config-$NAME.h $CONFIG_H
+    scripts/config.pl unset MBEDTLS_SSL_SRV_C
+
+    for FLAG in $UNSET_LIST; do
+        scripts/config.pl unset $FLAG
+    done
+
+    grep -F SSL_MAX_CONTENT_LEN $CONFIG_H || echo 'SSL_MAX_CONTENT_LEN=16384'
+
+    printf "    Executable size... "
+
+    make clean
+    CFLAGS=$CFLAGS_EXEC make OFLAGS=-Os lib >/dev/null 2>&1
+    cd programs
+    CFLAGS=$CFLAGS_EXEC make OFLAGS=-Os ssl/$CLIENT >/dev/null
+    strip ssl/$CLIENT
+    stat -c '%s' ssl/$CLIENT
+    cd ..
+
+    printf "    Peak ram usage... "
+
+    make clean
+    CFLAGS=$CFLAGS_MEM make OFLAGS=-Os lib >/dev/null 2>&1
+    cd programs
+    CFLAGS=$CFLAGS_MEM make OFLAGS=-Os ssl/$CLIENT >/dev/null
+    cd ..
+
+    ./ssl_server2 $SERVER_ARGS >/dev/null &
+    SRV_PID=$!
+    sleep 1;
+
+    if valgrind --tool=massif --stacks=yes programs/ssl/$CLIENT >/dev/null 2>&1
+    then
+        FAILED=0
+    else
+        echo "client failed" >&2
+        FAILED=1
+    fi
+
+    kill $SRV_PID
+    wait $SRV_PID
+
+    scripts/massif_max.pl massif.out.*
+    mv massif.out.* massif-$NAME.$$
+}
+
+# preparation
+
+CONFIG_BAK=${CONFIG_H}.bak
+cp $CONFIG_H $CONFIG_BAK
+
+rm -f massif.out.*
+
+printf "building server... "
+
+make clean
+make lib >/dev/null 2>&1
+(cd programs && make ssl/ssl_server2) >/dev/null
+cp programs/ssl/ssl_server2 .
+
+echo "done"
+
+# actual measurements
+
+do_config   "ccm-psk-tls1_2" \
+            "" \
+            "psk=000102030405060708090A0B0C0D0E0F"
+
+do_config   "suite-b" \
+            "MBEDTLS_BASE64_C MBEDTLS_PEM_PARSE_C MBEDTLS_CERTS_C" \
+            ""
+
+# cleanup
+
+mv $CONFIG_BAK $CONFIG_H
+make clean
+rm ssl_server2
+
+exit $FAILED