Data/bss section initialization fix (#492)

Makes data/bss initialization support sections with length not a multiple of 4-bytes. Previously such a binary caused an infinite loop or hard fault upon boot.
bakerstu · Dec 23, 2020 · 96d5ab8 · 96d5ab8
1 parent 1f8f205
commit 96d5ab8
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/boards/armv7m/default_handlers.h b/boards/armv7m/default_handlers.h
@@ -90,7 +90,7 @@ void reset_handler(void)
         unsigned long *dst = (unsigned long *)*section_table_addr++;
         unsigned long len = (unsigned long)*section_table_addr++;
 
-        for (; len; len -= 4)
+        for (; len > 0; len -= 4)
         {
             *dst++ = *src++;
         }
@@ -102,7 +102,7 @@ void reset_handler(void)
         unsigned long *zero = (unsigned long *)*section_table_addr++;
         unsigned long len = (unsigned long)*section_table_addr++;
 
-        for (; len; len -= 4)
+        for (; len > 0; len -= 4)
         {
             *zero++ = 0;
         }