diff mbox series

[v11,73/77] target/riscv: rvv-1.0: add evl parameter to vext_ldst_us()

Message ID 20211210075704.23951-74-frank.chang@sifive.com (mailing list archive)
State New, archived
Headers show
Series support vector extension v1.0 | expand

Commit Message

Frank Chang Dec. 10, 2021, 7:56 a.m. UTC 
From: Frank Chang <frank.chang@sifive.com>

Add supports of Vector unit-stride mask load/store instructions
(vlm.v, vsm.v), which has:
    evl (effective vector length) = ceil(env->vl / 8).

The new instructions operate the same as unmasked byte loads and stores.
Add evl parameter to reuse vext_ldst_us().

Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
---
 target/riscv/vector_helper.c | 36 ++++++++++++++++++------------------
 1 file changed, 18 insertions(+), 18 deletions(-)
diff mbox series

Patch

diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c
index 946dca53ff..83373ca6fc 100644
--- a/target/riscv/vector_helper.c
+++ b/target/riscv/vector_helper.c
@@ -279,15 +279,15 @@  GEN_VEXT_ST_STRIDE(vsse64_v, int64_t, ste_d)
 /* unmasked unit-stride load and store operation*/
 static void
 vext_ldst_us(void *vd, target_ulong base, CPURISCVState *env, uint32_t desc,
-             vext_ldst_elem_fn *ldst_elem,
-             uint32_t esz, uintptr_t ra, MMUAccessType access_type)
+             vext_ldst_elem_fn *ldst_elem, uint32_t esz, uint32_t evl,
+             uintptr_t ra, MMUAccessType access_type)
 {
     uint32_t i, k;
     uint32_t nf = vext_nf(desc);
     uint32_t max_elems = vext_max_elems(desc, esz);
 
     /* load bytes from guest memory */
-    for (i = env->vstart; i < env->vl; i++, env->vstart++) {
+    for (i = env->vstart; i < evl; i++, env->vstart++) {
         k = 0;
         while (k < nf) {
             target_ulong addr = base + ((i * nf + k) << esz);
@@ -316,7 +316,7 @@  void HELPER(NAME)(void *vd, void *v0, target_ulong base,                \
                   CPURISCVState *env, uint32_t desc)                    \
 {                                                                       \
     vext_ldst_us(vd, base, env, desc, LOAD_FN,                          \
-                 ctzl(sizeof(ETYPE)), GETPC(), MMU_DATA_LOAD);          \
+                 ctzl(sizeof(ETYPE)), env->vl, GETPC(), MMU_DATA_LOAD); \
 }
 
 GEN_VEXT_LD_US(vle8_v,  int8_t,  lde_b)
@@ -324,20 +324,20 @@  GEN_VEXT_LD_US(vle16_v, int16_t, lde_h)
 GEN_VEXT_LD_US(vle32_v, int32_t, lde_w)
 GEN_VEXT_LD_US(vle64_v, int64_t, lde_d)
 
-#define GEN_VEXT_ST_US(NAME, ETYPE, STORE_FN)                           \
-void HELPER(NAME##_mask)(void *vd, void *v0, target_ulong base,         \
-                         CPURISCVState *env, uint32_t desc)             \
-{                                                                       \
-    uint32_t stride = vext_nf(desc) << ctzl(sizeof(ETYPE));             \
-    vext_ldst_stride(vd, v0, base, stride, env, desc, false, STORE_FN,  \
-                     ctzl(sizeof(ETYPE)), GETPC(), MMU_DATA_STORE);     \
-}                                                                       \
-                                                                        \
-void HELPER(NAME)(void *vd, void *v0, target_ulong base,                \
-                  CPURISCVState *env, uint32_t desc)                    \
-{                                                                       \
-    vext_ldst_us(vd, base, env, desc, STORE_FN,                         \
-                 ctzl(sizeof(ETYPE)), GETPC(), MMU_DATA_STORE);         \
+#define GEN_VEXT_ST_US(NAME, ETYPE, STORE_FN)                            \
+void HELPER(NAME##_mask)(void *vd, void *v0, target_ulong base,          \
+                         CPURISCVState *env, uint32_t desc)              \
+{                                                                        \
+    uint32_t stride = vext_nf(desc) << ctzl(sizeof(ETYPE));              \
+    vext_ldst_stride(vd, v0, base, stride, env, desc, false, STORE_FN,   \
+                     ctzl(sizeof(ETYPE)), GETPC(), MMU_DATA_STORE);      \
+}                                                                        \
+                                                                         \
+void HELPER(NAME)(void *vd, void *v0, target_ulong base,                 \
+                  CPURISCVState *env, uint32_t desc)                     \
+{                                                                        \
+    vext_ldst_us(vd, base, env, desc, STORE_FN,                          \
+                 ctzl(sizeof(ETYPE)), env->vl, GETPC(), MMU_DATA_STORE); \
 }
 
 GEN_VEXT_ST_US(vse8_v,  int8_t,  ste_b)