serpent-sse2-amd64: Move register clearing to assembly functions

cipher/serpent-sse2-amd64.S (_gcry_serpent_sse2_ctr_enc)
(_gcry_serpent_sse2_cbc_dec, _gcry_serpent_sse2_cfb_dec): Clear used
XMM registers.
cipher/serpent.c (_gcry_serpent_ctr_enc, _gcry_serpent_cbc_dec)
( _gcry_serpent_cfb_dec) [USE_SSE2]: Remove XMM register clearing from
bulk functions.
--

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>

1 files changed, 0 insertions, 48 deletions

diff --git a/cipher/serpent.c b/cipher/serpent.c
index 8aded344..bf03fe74 100644
--- a/cipher/serpent.c
+++ b/cipher/serpent.c
@@ -875,22 +875,6 @@ _gcry_serpent_ctr_enc(void *context, unsigned char *ctr,
 
     if (did_use_sse2)
       {
-        /* clear SSE2 registers used by serpent-sse2 */
-        asm volatile (
-          "pxor %%xmm0, %%xmm0;\n"
-          "pxor %%xmm1, %%xmm1;\n"
-          "pxor %%xmm2, %%xmm2;\n"
-          "pxor %%xmm3, %%xmm3;\n"
-          "pxor %%xmm4, %%xmm4;\n"
-          "pxor %%xmm5, %%xmm5;\n"
-          "pxor %%xmm6, %%xmm6;\n"
-          "pxor %%xmm7, %%xmm7;\n"
-          "pxor %%xmm10, %%xmm10;\n"
-          "pxor %%xmm11, %%xmm11;\n"
-          "pxor %%xmm12, %%xmm12;\n"
-          "pxor %%xmm13, %%xmm13;\n"
-          :::);
-
         /* serpent-sse2 assembly code does not use stack */
         if (nblocks == 0)
           burn_stack_depth = 0;
@@ -982,22 +966,6 @@ _gcry_serpent_cbc_dec(void *context, unsigned char *iv,
 
     if (did_use_sse2)
       {
-        /* clear SSE2 registers used by serpent-sse2 */
-        asm volatile (
-          "pxor %%xmm0, %%xmm0;\n"
-          "pxor %%xmm1, %%xmm1;\n"
-          "pxor %%xmm2, %%xmm2;\n"
-          "pxor %%xmm3, %%xmm3;\n"
-          "pxor %%xmm4, %%xmm4;\n"
-          "pxor %%xmm5, %%xmm5;\n"
-          "pxor %%xmm6, %%xmm6;\n"
-          "pxor %%xmm7, %%xmm7;\n"
-          "pxor %%xmm10, %%xmm10;\n"
-          "pxor %%xmm11, %%xmm11;\n"
-          "pxor %%xmm12, %%xmm12;\n"
-          "pxor %%xmm13, %%xmm13;\n"
-          :::);
-
         /* serpent-sse2 assembly code does not use stack */
         if (nblocks == 0)
           burn_stack_depth = 0;
@@ -1084,22 +1052,6 @@ _gcry_serpent_cfb_dec(void *context, unsigned char *iv,
 
     if (did_use_sse2)
       {
-        /* clear SSE2 registers used by serpent-sse2 */
-        asm volatile (
-          "pxor %%xmm0, %%xmm0;\n"
-          "pxor %%xmm1, %%xmm1;\n"
-          "pxor %%xmm2, %%xmm2;\n"
-          "pxor %%xmm3, %%xmm3;\n"
-          "pxor %%xmm4, %%xmm4;\n"
-          "pxor %%xmm5, %%xmm5;\n"
-          "pxor %%xmm6, %%xmm6;\n"
-          "pxor %%xmm7, %%xmm7;\n"
-          "pxor %%xmm10, %%xmm10;\n"
-          "pxor %%xmm11, %%xmm11;\n"
-          "pxor %%xmm12, %%xmm12;\n"
-          "pxor %%xmm13, %%xmm13;\n"
-          :::);
-
         /* serpent-sse2 assembly code does not use stack */
         if (nblocks == 0)
           burn_stack_depth = 0;