[PATCH v7 73/75] target/riscv: rvv-1.0: add vsetivli instruction

[frank . chang]

From: Frank Chang <frank.chang@sifive.com>

Signed-off-by: Frank Chang <frank.chang@sifive.com>
---
 target/riscv/insn32.decode              |  2 ++
 target/riscv/insn_trans/trans_rvv.c.inc | 30 +++++++++++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index 6fb85c83278..472626f1950 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -78,6 +78,7 @@
 @r_vm_0  ...... . ..... ..... ... ..... .......    &rmrr vm=0 %rs2 %rs1 %rd
 @r_wdvm  ..... wd:1 vm:1 ..... ..... ... ..... ....... &rwdvm %rs2 %rs1 %rd
 @r2_zimm11 . zimm:11  ..... ... ..... ....... %rs1 %rd
+@r2_zimm10 .. zimm:10  ..... ... ..... ....... %rs1 %rd
 @r2_s    .......   ..... ..... ... ..... ....... %rs2 %rs1
 
 @hfence_gvma ....... ..... .....   ... ..... ....... %rs2 %rs1
@@ -647,4 +648,5 @@ vsext_vf4       010010 . ..... 00101 010 ..... 1010111 
@r2_vm
 vsext_vf8       010010 . ..... 00011 010 ..... 1010111 @r2_vm
 
 vsetvli         0 ........... ..... 111 ..... 1010111  @r2_zimm11
+vsetivli        11 .......... ..... 111 ..... 1010111  @r2_zimm10
 vsetvl          1000000 ..... ..... 111 ..... 1010111  @r
diff --git a/target/riscv/insn_trans/trans_rvv.c.inc 
b/target/riscv/insn_trans/trans_rvv.c.inc
index 120b32367e5..1e9f5148ccd 100644
--- a/target/riscv/insn_trans/trans_rvv.c.inc
+++ b/target/riscv/insn_trans/trans_rvv.c.inc
@@ -159,6 +159,29 @@ static bool do_vsetvl(DisasContext *ctx, int rd, int rs1, 
TCGv s2)
     return true;
 }
 
+static bool do_vsetivli(DisasContext *ctx, int rd, TCGv s1, TCGv s2)
+{
+    TCGv dst;
+
+    if (!require_rvv(ctx) || !has_ext(ctx, RVV)) {
+        return false;
+    }
+
+    dst = tcg_temp_new();
+
+    gen_helper_vsetvl(dst, cpu_env, s1, s2);
+    gen_set_gpr(rd, dst);
+    mark_vs_dirty(ctx);
+    tcg_gen_movi_tl(cpu_pc, ctx->pc_succ_insn);
+    lookup_and_goto_ptr(ctx);
+    ctx->base.is_jmp = DISAS_NORETURN;
+
+    tcg_temp_free(s1);
+    tcg_temp_free(s2);
+    tcg_temp_free(dst);
+    return true;
+}
+
 static bool trans_vsetvl(DisasContext *ctx, arg_vsetvl *a)
 {
     TCGv s2 = tcg_temp_new();
@@ -172,6 +195,13 @@ static bool trans_vsetvli(DisasContext *ctx, arg_vsetvli 
*a)
     return do_vsetvl(ctx, a->rd, a->rs1, s2);
 }
 
+static bool trans_vsetivli(DisasContext *ctx, arg_vsetivli *a)
+{
+    TCGv s1 = tcg_const_tl(a->rs1);
+    TCGv s2 = tcg_const_tl(a->zimm);
+    return do_vsetivli(ctx, a->rd, s1, s2);
+}
+
 /* vector register offset from env */
 static uint32_t vreg_ofs(DisasContext *s, int reg)
 {
-- 
2.17.1