fix for laf intel float split not enabled if not not on a tty

Author: vanhauser-thc

.custom-format.py

@@ -32,7 +32,8 @@
         p = subprocess.Popen(["clang-format-10", "--version"], stdout=subprocess.PIPE)
         o, _ = p.communicate()
         o = str(o, "utf-8")
-        o = o[len("clang-format version "):].strip()
+        o = re.sub(r".*ersion ", "", o)
+        #o = o[len("clang-format version "):].strip()
         o = o[:o.find(".")]
         o = int(o)
     except:

docs/Changelog.md

@@ -13,7 +13,8 @@ sending a mail to <[email protected]>.
   - afl-fuzz:
      - eliminated CPU affinity race condition for -S/-M runs
   - llvm_mode:
-     - fix for laf-intel float splitting
+     - fixes for laf-intel float splitting (thanks to mark-griffin for
+       reporting)
      - LTO: autodictionary mode is a default
      - LTO: instrim instrumentation disabled, only classic support used
             as it is always better

examples/afl_untracer/README.md

@@ -32,6 +32,7 @@ To easily run the scripts without needing to run the GUI with Ghidra:
 /opt/ghidra/support/analyzeHeadless /tmp/ tmp$$ -import libtestinstr.so -postscript ./ghidra_get_patchpoints.java
 rm -rf /tmp/tmp$$
 ```
+The file is created at `~/Desktop/patches.txt`
 
 ### Fuzzing
 

examples/afl_untracer/afl-untracer.c

@@ -74,6 +74,9 @@
 
 // STEP 1:
 
+/* here you need to specify the parameter for the target function */
+static void *(*o_function)(u8 *buf, int len);
+
 /* use stdin (1) or a file on the commandline (0) */
 static u32 use_stdin = 1;
 
@@ -668,13 +671,10 @@ static void sigtrap_handler(int signum, siginfo_t *si, void *context) {
 
 }
 
-/* here you need to specify the parameter for the target function */
-static void *(*o_function)(u8 *buf, int len);
-
 /* the MAIN function */
 int main(int argc, char *argv[]) {
 
-  (void) personality(ADDR_NO_RANDOMIZE); // disable ASLR
+  (void)personality(ADDR_NO_RANDOMIZE);  // disable ASLR
 
   pid = getpid();
   if (getenv("AFL_DEBUG")) debug = 1;
@@ -745,9 +745,10 @@ int main(int argc, char *argv[]) {
 }
 
 #ifndef _DEBUG
-inline 
+inline
 #endif
-static void fuzz() {
+    static void
+    fuzz() {
 
   // STEP 3: call the function to fuzz, also the functions you might
   //         need to call to prepare the function and - important! -
@@ -762,3 +763,4 @@ static void fuzz() {
   // END STEP 3
 
 }
+

llvm_mode/split-compares-pass.so.cc

@@ -1263,8 +1263,6 @@ bool SplitComparesTransform::runOnModule(Module &M) {
 
     if (enableFPSplit) {
 
-      simplifyFPCompares(M);
-
       errs() << "Split-floatingpoint-compare-pass: " << splitFPCompares(M)
              << " FP comparisons splitted\n";
 
@@ -1274,6 +1272,8 @@ bool SplitComparesTransform::runOnModule(Module &M) {
 
     be_quiet = 1;
 
+  if (enableFPSplit) simplifyFPCompares(M);
+
   simplifyCompares(M);
 
   simplifyIntSignedness(M);