diff mbox series

[11/35] target/i386: Use aesdec_ISB_ISR

Message ID 20230603023426.1064431-12-richard.henderson@linaro.org
State Superseded
Headers show
Series crypto: Provide aes-round.h and host accel | expand

Commit Message

Richard Henderson June 3, 2023, 2:34 a.m. UTC 
This implements the AESDECLAST instruction.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/i386/ops_sse.h | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/target/i386/ops_sse.h b/target/i386/ops_sse.h
index 31e1f6edc7..036eabdf95 100644
--- a/target/i386/ops_sse.h
+++ b/target/i386/ops_sse.h
@@ -2177,12 +2177,14 @@  void glue(helper_aesdec, SUFFIX)(CPUX86State *env, Reg *d, Reg *v, Reg *s)
 
 void glue(helper_aesdeclast, SUFFIX)(CPUX86State *env, Reg *d, Reg *v, Reg *s)
 {
-    int i;
-    Reg st = *v;
-    Reg rk = *s;
+    for (int i = 0; i < SHIFT; i++) {
+        AESState *ad = (AESState *)&d->ZMM_X(i);
+        AESState *st = (AESState *)&v->ZMM_X(i);
+        AESState *rk = (AESState *)&s->ZMM_X(i);
+        AESState t;
 
-    for (i = 0; i < 8 << SHIFT; i++) {
-        d->B(i) = rk.B(i) ^ (AES_isbox[st.B(AES_ishifts[i & 15] + (i & ~15))]);
+        aesdec_ISB_ISR(&t, st, false);
+        ad->v = t.v ^ rk->v;
     }
 }