diff mbox series

[20/35] target/riscv: Use aesdec_IMC

Message ID 20230603023426.1064431-21-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State Superseded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 AES64IM instruction.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/riscv/crypto_helper.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)
diff mbox series

Patch

diff --git a/target/riscv/crypto_helper.c b/target/riscv/crypto_helper.c
index 08191b4b2a..64004b2329 100644
--- a/target/riscv/crypto_helper.c
+++ b/target/riscv/crypto_helper.c
@@ -270,17 +270,12 @@  target_ulong HELPER(aes64ks1i)(target_ulong rs1, target_ulong rnum)
 
 target_ulong HELPER(aes64im)(target_ulong rs1)
 {
-    uint64_t RS1 = rs1;
-    uint32_t col_0 = RS1 & 0xFFFFFFFF;
-    uint32_t col_1 = RS1 >> 32;
-    target_ulong result;
+    AESState t;
 
-    col_0 = AES_INVMIXCOLUMN(col_0);
-    col_1 = AES_INVMIXCOLUMN(col_1);
-
-    result = ((uint64_t)col_1 << 32) | col_0;
-
-    return result;
+    t.d[HOST_BIG_ENDIAN] = rs1;
+    t.d[!HOST_BIG_ENDIAN] = 0;
+    aesdec_IMC(&t, &t, false);
+    return t.d[HOST_BIG_ENDIAN];
 }
 
 target_ulong HELPER(sm4ed)(target_ulong rs1, target_ulong rs2,