not all CPUs know ondemand

2 files changed, 21 insertions, 5 deletions

diff --git a/gcc_plugin/afl-gcc-pass.so.cc b/gcc_plugin/afl-gcc-pass.so.cc
index b6246c7a..66c133b8 100644
--- a/gcc_plugin/afl-gcc-pass.so.cc
+++ b/gcc_plugin/afl-gcc-pass.so.cc
@@ -113,6 +113,7 @@ static unsigned int ext_call_instrument(function *fun) {
   DECL_EXTERNAL(fndecl) = 1;                            /* External linkage */
   DECL_ARTIFICIAL(fndecl) = 1;                      /* Injected by compiler */
 
+printf("NEW FUNC %s\n", function_name(fun));
   FOR_EACH_BB_FN(bb, fun) {
 
     gimple_seq           fcall;
@@ -128,24 +129,40 @@ static unsigned int ext_call_instrument(function *fun) {
     int           more_than_one = -1;
     edge          ep;
     edge_iterator eip;
+int foo = 0;
+        if (ep->flags & EDGE_FALLTHRU)
+printf("pred %d fallthough\n", foo);
     FOR_EACH_EDGE(ep, eip, bb->preds) {
 
+int item = 0;
+foo++;
+printf("pred %d\n", foo);
+        if (ep->flags & EDGE_FALLTHRU)
+printf("pred %d fallthough\n", foo);
+
       int count = 0;
+if (ep->flags & EDGE_FALLTHRU)
       if (more_than_one == -1) more_than_one = 0;
 
       basic_block   Pred = ep->src;
       edge          es;
       edge_iterator eis;
       FOR_EACH_EDGE(es, eis, Pred->succs) {
+item++;
 
+        if (es->flags & EDGE_FALLTHRU)
+printf("item %d fallthough\n", item);
+          
         basic_block Succ = es->dest;
         if (Succ != NULL) count++;
 
       }
+printf("total items: %d\n", item);
 
       if (count > 1) more_than_one = 1;
 
     }
+printf("result: %d\n", more_than_one);
 
     if (more_than_one != 1) continue;
 
diff --git a/src/afl-fuzz-init.c b/src/afl-fuzz-init.c
index 82ba6f8a..d99f9bec 100644
--- a/src/afl-fuzz-init.c
+++ b/src/afl-fuzz-init.c
@@ -1562,11 +1562,10 @@ void check_cpu_governor(void) {
        "    echo performance | tee cpu*/cpufreq/scaling_governor\n\n"
 
        "    You can later go back to the original state by replacing "
-       "'performance' with\n"
-       "    'ondemand'. If you don't want to change the settings, set "
-       "AFL_SKIP_CPUFREQ\n"
-       "    to make afl-fuzz skip this check - but expect some performance "
-       "drop.\n",
+       "'performance'\n"
+       "    with 'ondemand' or 'powersave'. If you don't want to change the settings,\n"
+       "    set AFL_SKIP_CPUFREQ to make afl-fuzz skip this check - but expect some\n"
+       "    performance drop.\n",
        min / 1024, max / 1024);
   FATAL("Suboptimal CPU scaling governor");