[PATCH v7 10/14] target/riscv: rvk: add support for sha512 related instructions for RV64 in zknh extension

[Weiwei Li]

 - add sha512sum0, sha512sig0, sha512sum1 and sha512sig1 instructions

Co-authored-by: Zewen Ye <lustrew@foxmail.com>
Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
---
 target/riscv/insn32.decode              |  5 ++++
 target/riscv/insn_trans/trans_rvk.c.inc | 32 +++++++++++++++++++++++++
 2 files changed, 37 insertions(+)

diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index 02a0c71890..d9ebb138d1 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -868,3 +868,8 @@ sha512sig0l 01 01010 ..... ..... 000 ..... 0110011 @r
 sha512sig0h 01 01110 ..... ..... 000 ..... 0110011 @r
 sha512sig1l 01 01011 ..... ..... 000 ..... 0110011 @r
 sha512sig1h 01 01111 ..... ..... 000 ..... 0110011 @r
+# *** RV64 Zknh Standard Extension ***
+sha512sig0  00 01000 00110 ..... 001 ..... 0010011 @r2
+sha512sig1  00 01000 00111 ..... 001 ..... 0010011 @r2
+sha512sum0  00 01000 00100 ..... 001 ..... 0010011 @r2
+sha512sum1  00 01000 00101 ..... 001 ..... 0010011 @r2
diff --git a/target/riscv/insn_trans/trans_rvk.c.inc 
b/target/riscv/insn_trans/trans_rvk.c.inc
index f1dccc13c8..3fe2d32e19 100644
--- a/target/riscv/insn_trans/trans_rvk.c.inc
+++ b/target/riscv/insn_trans/trans_rvk.c.inc
@@ -212,3 +212,35 @@ static bool trans_##NAME(DisasContext *ctx, arg_##NAME *a) 
\
 
 GEN_SHA512H_RV32(sha512sig0h, rotri, 1, 7, 8)
 GEN_SHA512H_RV32(sha512sig1h, rotli, 3, 6, 19)
+
+#define GEN_SHA512_RV64(NAME, OP, NUM1, NUM2, NUM3) \
+static void gen_##NAME(TCGv dest, TCGv src1) \
+{ \
+    TCGv_i64 t0 = tcg_temp_new_i64(); \
+    TCGv_i64 t1 = tcg_temp_new_i64(); \
+    TCGv_i64 t2 = tcg_temp_new_i64(); \
+    \
+    tcg_gen_extu_tl_i64(t0, src1); \
+    tcg_gen_rotri_i64(t1, t0, NUM1); \
+    tcg_gen_rotri_i64(t2, t0, NUM2); \
+    tcg_gen_xor_i64(t1, t1, t2); \
+    tcg_gen_##OP##_i64(t2, t0, NUM3); \
+    tcg_gen_xor_i64(t1, t1, t2); \
+    tcg_gen_trunc_i64_tl(dest, t1); \
+    \
+    tcg_temp_free_i64(t0); \
+    tcg_temp_free_i64(t1); \
+    tcg_temp_free_i64(t2); \
+} \
+\
+static bool trans_##NAME(DisasContext *ctx, arg_##NAME *a) \
+{ \
+    REQUIRE_64BIT(ctx); \
+    REQUIRE_ZKNH(ctx); \
+    return gen_unary(ctx, a, EXT_NONE, gen_##NAME); \
+}
+
+GEN_SHA512_RV64(sha512sig0, shri, 1, 8, 7)
+GEN_SHA512_RV64(sha512sig1, shri, 19, 61, 6)
+GEN_SHA512_RV64(sha512sum0, rotri, 28, 34, 39)
+GEN_SHA512_RV64(sha512sum1, rotri, 14, 18, 41)
-- 
2.17.1