Rename bn_umul_hilo() to bn_mulw().

This keeps the naming consistent with the other bignum primitives that have
been recently introduced. Also, use 1/0 intead of h/l (e.g. a1 instead of
ah), as this keeps consistency with other primitives and allows for naming
that works with double word, triple word and quadruple word inputs/outputs.

Discussed with tb@

1 files changed, 7 insertions, 7 deletions

diff --git a/src/lib/libcrypto/bn/arch/amd64/bn_arch.h b/src/lib/libcrypto/bn/arch/amd64/bn_arch.h
index 637903077a..80f73bf15f 100644
--- a/src/lib/libcrypto/bn/arch/amd64/bn_arch.h
+++ b/src/lib/libcrypto/bn/arch/amd64/bn_arch.h
@@ -1,4 +1,4 @@
-/*      $OpenBSD: bn_arch.h,v 1.11 2023/02/04 14:00:18 jsing Exp $ */
+/*      $OpenBSD: bn_arch.h,v 1.12 2023/02/16 10:41:03 jsing Exp $ */
 /*
  * Copyright (c) 2023 Joel Sing <jsing@openbsd.org>
  *
@@ -63,24 +63,24 @@ bn_div_rem_words_inline(BN_ULONG h, BN_ULONG l, BN_ULONG d, BN_ULONG *out_q,
 #endif /* __GNUC__ */
 
 #if defined(__GNUC__)
-#define HAVE_BN_UMUL_HILO
+#define HAVE_BN_MULW
 
 static inline void
-bn_umul_hilo(BN_ULONG a, BN_ULONG b, BN_ULONG *out_h, BN_ULONG *out_l)
+bn_mulw(BN_ULONG a, BN_ULONG b, BN_ULONG *out_r1, BN_ULONG *out_r0)
 {
-        BN_ULONG h, l;
+        BN_ULONG r1, r0;
 
         /*
          * Unsigned multiplication of %rax, with the double word result being
          * stored in %rdx:%rax.
          */
         __asm__ ("mulq %3"
-            : "=d"(h), "=a"(l)
+            : "=d"(r1), "=a"(r0)
             : "a"(a), "rm"(b)
             : "cc");
 
-        *out_h = h;
-        *out_l = l;
+        *out_r1 = r1;
+        *out_r0 = r0;
 }
 #endif /* __GNUC__ */