* x86/machine.m4 (AES_STORE): New macro.

Rev: src/nettle/x86/machine.m4:1.3

diff --git a/x86/machine.m4 b/x86/machine.m4
index d145b5b3726c191ce556da86f33f0d5b9f1e524a..552de7a1c9ba4fa716cf7e82d78fa5d8d2532a36 100644 (file)
--- a/x86/machine.m4
+++ b/x86/machine.m4
@@ -13,3 +13,20 @@ define(<AES_LAST_ROUND>, <
        movl    %e<>$4<>x,%ebp
        andl    <$>0xff000000,%ebp
        orl     %ebp,%edi>)dnl
+
+dnl AES_STORE(key, dst)
+dnl Adds the subkey pointed to by %esi to %eax-%edx,
+dnl and stores the result in the area pointed to by %edi.
+dnl Note that x86 allows unaligned accesses.
+dnl Would it be preferable to interleave the loads and stores?
+define(<AES_STORE>, <
+       xorl    ($1),%eax
+       xorl    4($1),%ebx
+       xorl    8($1),%ecx
+       xorl    12($1),%edx
+
+       movl    %eax,($2)
+       movl    %ebx,4($2)
+       movl    %ecx,8($2)
+       movl    %edx,12($2)>)dnl
+