Include 5 groups: Wrap-around (dropping overflow), Signed Halving,
Unsigned Halving, Signed Saturation, and Unsigned Saturation.
Signed-off-by: LIU Zhiwei <zhiwei_...@c-sky.com>
Acked-by: Alistair Francis <alistair.fran...@wdc.com>
Reviewed-by: Palmer Dabbelt <palmerdabb...@google.com>
---
target/riscv/helper.h | 9 +++
target/riscv/insn32.decode | 11 ++++
target/riscv/insn_trans/trans_rvp.c.inc | 13 +++++
target/riscv/packed_helper.c | 73 +++++++++++++++++++++++++
4 files changed, 106 insertions(+)
diff --git a/target/riscv/helper.h b/target/riscv/helper.h
index b6a71ade33..629ff13402 100644
--- a/target/riscv/helper.h
+++ b/target/riscv/helper.h
@@ -1179,3 +1179,12 @@ DEF_HELPER_3(rstsa16, tl, env, tl, tl)
DEF_HELPER_3(urstsa16, tl, env, tl, tl)
DEF_HELPER_3(kstsa16, tl, env, tl, tl)
DEF_HELPER_3(ukstsa16, tl, env, tl, tl)
+
+DEF_HELPER_3(radd8, tl, env, tl, tl)
+DEF_HELPER_3(uradd8, tl, env, tl, tl)
+DEF_HELPER_3(kadd8, tl, env, tl, tl)
+DEF_HELPER_3(ukadd8, tl, env, tl, tl)
+DEF_HELPER_3(rsub8, tl, env, tl, tl)
+DEF_HELPER_3(ursub8, tl, env, tl, tl)
+DEF_HELPER_3(ksub8, tl, env, tl, tl)
+DEF_HELPER_3(uksub8, tl, env, tl, tl)
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index 57f72fabf6..13e1222296 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -764,3 +764,14 @@ rstsa16 1011011 ..... ..... 010 ..... 1110111 @r
urstsa16 1101011 ..... ..... 010 ..... 1110111 @r
kstsa16 1100011 ..... ..... 010 ..... 1110111 @r
ukstsa16 1110011 ..... ..... 010 ..... 1110111 @r
+
+add8 0100100 ..... ..... 000 ..... 1110111 @r
+radd8 0000100 ..... ..... 000 ..... 1110111 @r
+uradd8 0010100 ..... ..... 000 ..... 1110111 @r
+kadd8 0001100 ..... ..... 000 ..... 1110111 @r
+ukadd8 0011100 ..... ..... 000 ..... 1110111 @r
+sub8 0100101 ..... ..... 000 ..... 1110111 @r
+rsub8 0000101 ..... ..... 000 ..... 1110111 @r
+ursub8 0010101 ..... ..... 000 ..... 1110111 @r
+ksub8 0001101 ..... ..... 000 ..... 1110111 @r
+uksub8 0011101 ..... ..... 000 ..... 1110111 @r
diff --git a/target/riscv/insn_trans/trans_rvp.c.inc
b/target/riscv/insn_trans/trans_rvp.c.inc
index 43f395657a..80bec35ac9 100644
--- a/target/riscv/insn_trans/trans_rvp.c.inc
+++ b/target/riscv/insn_trans/trans_rvp.c.inc
@@ -115,3 +115,16 @@ GEN_RVP_R_OOL(rstsa16);
GEN_RVP_R_OOL(urstsa16);
GEN_RVP_R_OOL(kstsa16);
GEN_RVP_R_OOL(ukstsa16);
+
+/* 8-bit Addition & Subtraction Instructions */
+GEN_RVP_R_INLINE(add8, tcg_gen_vec_add8_tl, tcg_gen_add_tl);
+GEN_RVP_R_INLINE(sub8, tcg_gen_vec_sub8_tl, tcg_gen_sub_tl);
+
+GEN_RVP_R_OOL(radd8);
+GEN_RVP_R_OOL(uradd8);
+GEN_RVP_R_OOL(kadd8);
+GEN_RVP_R_OOL(ukadd8);
+GEN_RVP_R_OOL(rsub8);
+GEN_RVP_R_OOL(ursub8);
+GEN_RVP_R_OOL(ksub8);
+GEN_RVP_R_OOL(uksub8);
diff --git a/target/riscv/packed_helper.c b/target/riscv/packed_helper.c
index b84abaaf25..62db072204 100644
--- a/target/riscv/packed_helper.c
+++ b/target/riscv/packed_helper.c
@@ -352,3 +352,76 @@ static inline void do_ukstsa16(CPURISCVState *env, void
*vd, void *va,
}
RVPR(ukstsa16, 2, 2);
+
+/* 8-bit Addition & Subtraction Instructions */
+static inline void do_radd8(CPURISCVState *env, void *vd, void *va,
+ void *vb, uint8_t i)
+{
+ int8_t *d = vd, *a = va, *b = vb;
+ d[i] = hadd32(a[i], b[i]);
+}
+
+RVPR(radd8, 1, 1);
+
+static inline void do_uradd8(CPURISCVState *env, void *vd, void *va,
+ void *vb, uint8_t i)
+{
+ uint8_t *d = vd, *a = va, *b = vb;
+ d[i] = haddu32(a[i], b[i]);
+}
+
+RVPR(uradd8, 1, 1);
+
+static inline void do_kadd8(CPURISCVState *env, void *vd, void *va,
+ void *vb, uint8_t i)
+{
+ int8_t *d = vd, *a = va, *b = vb;
+ d[i] = sadd8(env, 0, a[i], b[i]);
+}
+
+RVPR(kadd8, 1, 1);
+
+static inline void do_ukadd8(CPURISCVState *env, void *vd, void *va,
+ void *vb, uint8_t i)
+{
+ uint8_t *d = vd, *a = va, *b = vb;
+ d[i] = saddu8(env, 0, a[i], b[i]);
+}
+
+RVPR(ukadd8, 1, 1);
+
+static inline void do_rsub8(CPURISCVState *env, void *vd, void *va,
+ void *vb, uint8_t i)
+{
+ int8_t *d = vd, *a = va, *b = vb;
+ d[i] = hsub32(a[i], b[i]);
+}
+
+RVPR(rsub8, 1, 1);
+
+static inline void do_ursub8(CPURISCVState *env, void *vd, void *va,
+ void *vb, uint8_t i)
+{
+ uint8_t *d = vd, *a = va, *b = vb;
+ d[i] = hsubu64(a[i], b[i]);
+}
+
+RVPR(ursub8, 1, 1);
+
+static inline void do_ksub8(CPURISCVState *env, void *vd, void *va,
+ void *vb, uint8_t i)
+{
+ int8_t *d = vd, *a = va, *b = vb;
+ d[i] = ssub8(env, 0, a[i], b[i]);
+}
+
+RVPR(ksub8, 1, 1);
+
+static inline void do_uksub8(CPURISCVState *env, void *vd, void *va,
+ void *vb, uint8_t i)
+{
+ uint8_t *d = vd, *a = va, *b = vb;
+ d[i] = ssubu8(env, 0, a[i], b[i]);
+}
+
+RVPR(uksub8, 1, 1);
--
2.17.1
