From 607a5f9d624fdd63d0b7f0e640f7a8d21213b8df Mon Sep 17 00:00:00 2001
From: Richard Henderson <richard.henderson@linaro.org>
Date: Fri, 2 Jun 2023 02:29:40 -0700
Subject: [PATCH] target/riscv: Use aesdec_IMC
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This implements the AES64IM instruction.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/riscv/crypto_helper.c | 15 +++++----------
1 file changed, 5 insertions(+), 10 deletions(-)
diff --git a/target/riscv/crypto_helper.c b/target/riscv/crypto_helper.c
index e61f7fe1e5..505166ce5a 100644
--- a/target/riscv/crypto_helper.c
+++ b/target/riscv/crypto_helper.c
@@ -272,17 +272,12 @@ 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,