target/loongarch: Implement vsat
This patch includes:
- VSAT.{B/H/W/D}[U].
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20230504122810.4094787-18-gaosong@loongson.cn>
diff --git a/target/loongarch/lsx_helper.c b/target/loongarch/lsx_helper.c
index 018009b..9ba16ac 100644
--- a/target/loongarch/lsx_helper.c
+++ b/target/loongarch/lsx_helper.c
@@ -590,3 +590,40 @@
VDIV(vmod_hu, 16, UH, DO_REMU)
VDIV(vmod_wu, 32, UW, DO_REMU)
VDIV(vmod_du, 64, UD, DO_REMU)
+
+#define VSAT_S(NAME, BIT, E) \
+void HELPER(NAME)(void *vd, void *vj, uint64_t max, uint32_t v) \
+{ \
+ int i; \
+ VReg *Vd = (VReg *)vd; \
+ VReg *Vj = (VReg *)vj; \
+ typedef __typeof(Vd->E(0)) TD; \
+ \
+ for (i = 0; i < LSX_LEN/BIT; i++) { \
+ Vd->E(i) = Vj->E(i) > (TD)max ? (TD)max : \
+ Vj->E(i) < (TD)~max ? (TD)~max: Vj->E(i); \
+ } \
+}
+
+VSAT_S(vsat_b, 8, B)
+VSAT_S(vsat_h, 16, H)
+VSAT_S(vsat_w, 32, W)
+VSAT_S(vsat_d, 64, D)
+
+#define VSAT_U(NAME, BIT, E) \
+void HELPER(NAME)(void *vd, void *vj, uint64_t max, uint32_t v) \
+{ \
+ int i; \
+ VReg *Vd = (VReg *)vd; \
+ VReg *Vj = (VReg *)vj; \
+ typedef __typeof(Vd->E(0)) TD; \
+ \
+ for (i = 0; i < LSX_LEN/BIT; i++) { \
+ Vd->E(i) = Vj->E(i) > (TD)max ? (TD)max : Vj->E(i); \
+ } \
+}
+
+VSAT_U(vsat_bu, 8, UB)
+VSAT_U(vsat_hu, 16, UH)
+VSAT_U(vsat_wu, 32, UW)
+VSAT_U(vsat_du, 64, UD)
