Add commend about FreeRTOS stack canary

2020-05-18 17:28:13 -07:00 · 2020-05-18 17:28:13 -07:00 · 03b6f7b87b
commit 03b6f7b87b
parent 164628282d
1 changed files with 1 additions and 0 deletions
--- a/ports/esp32s2/Makefile
+++ b/ports/esp32s2/Makefile
@ -91,6 +91,7 @@ CFLAGS += -DHAVE_CONFIG_H \
          -DUNITY_INCLUDE_CONFIG_H -DWITH_POSIX

 # Make our canary value match FreeRTOS's
+# This define is in FreeRTOS as tskSTACK_FILL_BYTE 0xa5U which we expand out to a full word.
 CFLAGS += -DSTACK_CANARY_VALUE=0xa5a5a5a5

 #Debugging/Optimization