diff --git a/asm.m4 b/asm.m4
index 644df4cf3af86e7aae866fb19940316210758bab..113b295940cca72ffe33e876a7a909b5b547a498 100644
--- a/asm.m4
+++ b/asm.m4
@@ -1,4 +1,16 @@
 changequote(<,>)dnl
 changecom(!,<
 >)dnl
+dnl Offsets in aes_ctx and aes_table
+define(AES_KEYS, 0)dnl
+define(AES_NROUNDS, 240)dnl
+
+define(AES_SBOX, 0)dnl
+define(AES_IDX1, 256)dnl
+define(AES_IDX2, 272)dnl
+define(AES_IDX3, 288)dnl
+dnl define(AES_SIDX1, 304)dnl
+dnl define(AES_SIDX2, 320)dnl
+dnl define(AES_SIDX3, 336)dnl
+dnl define(AES_TABLE, 352)dnl