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-rw-r--r--docs/env_variables.txt8
1 files changed, 6 insertions, 2 deletions
diff --git a/docs/env_variables.txt b/docs/env_variables.txt
index 36fdc369..93066dbc 100644
--- a/docs/env_variables.txt
+++ b/docs/env_variables.txt
@@ -257,10 +257,14 @@ The QEMU wrapper used to instrument binary-only code supports several settings:
     Use this if you are unsure if the entrypoint might be wrong - but
     use it directly, e.g. afl-qemu-trace ./program 
 
-  - If you want to specify a specific entrypoint into the binary (this can
-    be very good for the performance!), use AFL_ENTRYPOINT for this.
+  - AFL_ENTRYPOINT allows you to specify a specific entrypoint into the
+    binary (this can be very good for the performance!).
     The entrypoint is specified as hex address, e.g. 0x4004110
 
+  - AFL_QEMU_COMPCOV is for a sub-project in qemu_mode called ./libcompcov
+    which implements laf-intel for qemu. It also needs AFL_PRELOAD and
+    you can find more information in qemu_mode/libcompcov/README.compcov
+
 5) Settings for afl-cmin
 ------------------------