4 files changed, 34 insertions, 50 deletions
diff --git a/qemu_mode/QEMUAFL_VERSION b/qemu_mode/QEMUAFL_VERSION
index 1152380c..a7f25da3 100644
--- a/qemu_mode/QEMUAFL_VERSION
+++ b/qemu_mode/QEMUAFL_VERSION
@@ -1 +1 @@
-e36a30ebca
+d1ca56b84e
diff --git a/qemu_mode/README.md b/qemu_mode/README.md
index bc4c1d2c..a14cbe64 100644
--- a/qemu_mode/README.md
+++ b/qemu_mode/README.md
@@ -99,6 +99,13 @@ Just set AFL_QEMU_INST_RANGES=A,B,C...
 The format of the items in the list is either a range of addresses like 0x123-0x321
 or a module name like module.so (that is matched in the mapped object filename).
 
+Alternatively you can tell QEMU to ignore part of an address space for instrumentation.
+
+Just set AFL_QEMU_EXCLUDE_RANGES=A,B,C...
+
+The format of the items on the list is the same as for AFL_QEMU_INST_RANGES, and excluding ranges
+takes priority over any included ranges or AFL_INST_LIBS.
+
 ## 7) CompareCoverage
 
 CompareCoverage is a sub-instrumentation with effects similar to laf-intel.
diff --git a/qemu_mode/build_qemu_support.sh b/qemu_mode/build_qemu_support.sh
index 815e77d6..38085389 100755
--- a/qemu_mode/build_qemu_support.sh
+++ b/qemu_mode/build_qemu_support.sh
@@ -59,51 +59,11 @@ if [ ! -f "../afl-showmap" ]; then
 
 fi
 
-PREREQ_NOTFOUND=
-for i in git wget sha384sum bison flex iconv patch pkg-config; do
-
-  T=`command -v "$i" 2>/dev/null`
-
-  if [ "$T" = "" ]; then
-
-    echo "[-] Error: '$i' not found, please install first."
-    PREREQ_NOTFOUND=1
-
-  fi
-
-done
-
-PYTHONBIN=`command -v python3 || command -v python || command -v python2`
-
-if [ "$PYTHONBIN" = "" ]; then
-  echo "[-] Error: 'python' not found, please install using 'sudo apt install python3'."
-  PREREQ_NOTFOUND=1
-fi
-
-
-if [ ! -d "/usr/include/glib-2.0/" -a ! -d "/usr/local/include/glib-2.0/" ]; then
-
-  echo "[-] Error: devel version of 'glib2' not found, please install first."
-  PREREQ_NOTFOUND=1
-
-fi
-
-if [ ! -d "/usr/include/pixman-1/" -a ! -d "/usr/local/include/pixman-1/" ]; then
-
-  echo "[-] Error: devel version of 'pixman-1' not found, please install first."
-  PREREQ_NOTFOUND=1
-
-fi
-
 if echo "$CC" | grep -qF /afl-; then
 
   echo "[-] Error: do not use afl-gcc or afl-clang to compile this tool."
-  PREREQ_NOTFOUND=1
-
-fi
-
-if [ "$PREREQ_NOTFOUND" = "1" ]; then
   exit 1
+
 fi
 
 echo "[+] All checks passed!"
@@ -131,9 +91,13 @@ test -d qemuafl || { echo "[-] Not checked out, please install git or check your
 echo "[+] Got qemuafl."
 
 cd "qemuafl" || exit 1
-echo "[*] Checking out $QEMUAFL_VERSION"
-sh -c 'git stash && git stash drop' 1>/dev/null 2>/dev/null
-git checkout "$QEMUAFL_VERSION" || echo Warning: could not check out to commit $QEMUAFL_VERSION
+if [ -n "$NO_CHECKOUT" ]; then
+  echo "[*] Skipping checkout to $QEMUAFL_VERSION"
+else
+  echo "[*] Checking out $QEMUAFL_VERSION"
+  sh -c 'git stash' 1>/dev/null 2>/dev/null
+  git checkout "$QEMUAFL_VERSION" || echo Warning: could not check out to commit $QEMUAFL_VERSION
+fi
 
 echo "[*] Making sure imported headers matches"
 cp "../../include/config.h" "./qemuafl/imported/" || exit 1
@@ -233,7 +197,6 @@ QEMU_CONF_FLAGS=" \
   --disable-xen \
   --disable-xen-pci-passthrough \
   --disable-xfsctl \
-  --python=${PYTHONBIN} \
   --target-list="${CPU_TARGET}-linux-user" \
   --without-default-devices \
   "
@@ -372,6 +335,20 @@ if [ "$ORIG_CROSS" = "" ]; then
   then # works on Arch Linux
     CROSS=$CPU_TARGET-pc-linux-gnu-gcc
   fi
+  if ! command -v "$CROSS" > /dev/null && [ "$CPU_TARGET" = "i386" ]
+  then
+    CROSS=i686-linux-gnu-gcc
+    if ! command -v "$CROSS" > /dev/null
+    then # works on Arch Linux
+      CROSS=i686-pc-linux-gnu-gcc
+    fi
+    if ! command -v "$CROSS" > /dev/null && [ "`uname -m`" = "x86_64" ]
+    then # set -m32
+      test "$CC" = "" && CC="gcc"
+      CROSS="$CC"
+      CROSS_FLAGS=-m32
+    fi
+  fi
 fi
 
 if ! command -v "$CROSS" > /dev/null ; then
@@ -387,13 +364,13 @@ if ! command -v "$CROSS" > /dev/null ; then
     echo "[!] Cross compiler $CROSS could not be found, cannot compile libcompcov libqasan and unsigaction"
   fi
 else
-  echo "[+] Building afl++ qemu support libraries with CC=$CROSS"
+  echo "[+] Building afl++ qemu support libraries with CC=\"$CROSS $CROSS_FLAGS\""
   echo "[+] Building libcompcov ..."
-  make -C libcompcov CC=$CROSS && echo "[+] libcompcov ready"
+  make -C libcompcov CC="$CROSS $CROSS_FLAGS" && echo "[+] libcompcov ready"
   echo "[+] Building unsigaction ..."
-  make -C unsigaction CC=$CROSS && echo "[+] unsigaction ready"
+  make -C unsigaction CC="$CROSS $CROSS_FLAGS" && echo "[+] unsigaction ready"
   echo "[+] Building libqasan ..."
-  make -C libqasan CC=$CROSS && echo "[+] unsigaction ready"
+  make -C libqasan CC="$CROSS $CROSS_FLAGS" && echo "[+] unsigaction ready"
 fi
 
 echo "[+] All done for qemu_mode, enjoy!"
diff --git a/qemu_mode/qemuafl b/qemu_mode/qemuafl
-Subproject e36a30ebca57ca433a5d6e20b1a32975aabb761
+Subproject d1ca56b84e78f821406eef28d836918edfc8d61