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-rw-r--r--libc/string/arm/_memcpy.S3
1 files changed, 2 insertions, 1 deletions
diff --git a/libc/string/arm/_memcpy.S b/libc/string/arm/_memcpy.S
index 1dc0887a4..b26080d02 100644
--- a/libc/string/arm/_memcpy.S
+++ b/libc/string/arm/_memcpy.S
@@ -67,8 +67,9 @@
* a time where possible.
*
* Note: r12 (aka ip) can be trashed during the function along with
- * r0-r3 although r0-r2 have defined uses i.e. src, dest, len through out.
+ * r0-r3 although r0-r2 have defined uses i.e. dest, src, len throughout.
* Additional registers are preserved prior to use i.e. r4, r5 & lr
+ * The return value in r0 must be the destination address.
*
* Apologies for the state of the comments ;-)
*/