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[v4,29/37] target/riscv: Use aesenc_SB_SR_AK

Message ID 20230703100520.68224-30-richard.henderson@linaro.org
State Superseded
Headers show
Series crypto: Provide aes-round.h and host accel | expand

Commit Message

Richard Henderson July 3, 2023, 10:05 a.m. UTC 
This implements the AES64ES instruction.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/riscv/crypto_helper.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

Comments

Philippe Mathieu-Daudé July 7, 2023, 8:38 p.m. UTC | #1 
On 3/7/23 12:05, Richard Henderson wrote:
> This implements the AES64ES instruction.
> 
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>   target/riscv/crypto_helper.c | 10 +++++++++-
>   1 file changed, 9 insertions(+), 1 deletion(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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Patch

diff --git a/target/riscv/crypto_helper.c b/target/riscv/crypto_helper.c
index 2ef30281b1..b072fed3e2 100644
--- a/target/riscv/crypto_helper.c
+++ b/target/riscv/crypto_helper.c
@@ -22,6 +22,7 @@ 
 #include "exec/exec-all.h"
 #include "exec/helper-proto.h"
 #include "crypto/aes.h"
+#include "crypto/aes-round.h"
 #include "crypto/sm4.h"
 
 #define AES_XTIME(a) \
@@ -136,6 +137,8 @@  target_ulong HELPER(aes32dsi)(target_ulong rs1, target_ulong rs2,
     AES_INVMIXBYTE(COL, 1, 2, 3, 0) << 8 | \
     AES_INVMIXBYTE(COL, 0, 1, 2, 3) << 0)
 
+static const AESState aes_zero = { };
+
 static inline target_ulong aes64_operation(target_ulong rs1, target_ulong rs2,
                                            bool enc, bool mix)
 {
@@ -200,7 +203,12 @@  target_ulong HELPER(aes64esm)(target_ulong rs1, target_ulong rs2)
 
 target_ulong HELPER(aes64es)(target_ulong rs1, target_ulong rs2)
 {
-    return aes64_operation(rs1, rs2, true, false);
+    AESState t;
+
+    t.d[HOST_BIG_ENDIAN] = rs1;
+    t.d[!HOST_BIG_ENDIAN] = rs2;
+    aesenc_SB_SR_AK(&t, &t, &aes_zero, false);
+    return t.d[HOST_BIG_ENDIAN];
 }
 
 target_ulong HELPER(aes64ds)(target_ulong rs1, target_ulong rs2)