Notes on using ldmia and stmia.

diff --git a/armv7/README b/armv7/README
index 3371566287e8581a031434b58c4a2835b9b1e855..4d01f30b1eec31a193f72d236279daba6b523c35 100644 (file)
--- a/armv7/README
+++ b/armv7/README
@@ -1,5 +1,9 @@
 Currently, code in this directory is written for arm cortex-a9.
 
+For efficient loads and stores, use ldmia, stmia and friends. Can do
+two loads or stores per cycle with 8-byte aligned addresses, or three
+loads or stores in two cycles, regardless of alignment.
+
 ABI gnueabi(hf) (not depending on the floating point conventions)
 
 Registers      May be          Argument