target/riscv: Add support for Zce

Add and expose property for Zce:
* Specifying Zce without F includes Zca, Zcb, Zcmp, Zcmt.
* Specifying Zce with F includes Zca, Zcb, Zcmp, Zcmt and Zcf.

Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230307081403.61950-11-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index ed8dc61..cd9e7bd 100644 (file)
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -91,6 +91,7 @@ static const struct isa_ext_data isa_edata_arr[] = {
     ISA_EXT_DATA_ENTRY(zcb, true, PRIV_VERSION_1_12_0, ext_zcb),
     ISA_EXT_DATA_ENTRY(zcf, true, PRIV_VERSION_1_12_0, ext_zcf),
     ISA_EXT_DATA_ENTRY(zcd, true, PRIV_VERSION_1_12_0, ext_zcd),
+    ISA_EXT_DATA_ENTRY(zce, true, PRIV_VERSION_1_12_0, ext_zce),
     ISA_EXT_DATA_ENTRY(zcmp, true, PRIV_VERSION_1_12_0, ext_zcmp),
     ISA_EXT_DATA_ENTRY(zcmt, true, PRIV_VERSION_1_12_0, ext_zcmt),
     ISA_EXT_DATA_ENTRY(zba, true, PRIV_VERSION_1_12_0, ext_zba),
@@ -945,6 +946,16 @@ static void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp)
         }
     }
 
+    if (cpu->cfg.ext_zce) {
+        cpu->cfg.ext_zca = true;
+        cpu->cfg.ext_zcb = true;
+        cpu->cfg.ext_zcmp = true;
+        cpu->cfg.ext_zcmt = true;
+        if (cpu->cfg.ext_f && env->misa_mxl_max == MXL_RV32) {
+            cpu->cfg.ext_zcf = true;
+        }
+    }
+
     if (cpu->cfg.ext_c) {
         cpu->cfg.ext_zca = true;
         if (cpu->cfg.ext_f && env->misa_mxl_max == MXL_RV32) {
@@ -1501,6 +1512,7 @@ static Property riscv_cpu_extensions[] = {
     DEFINE_PROP_BOOL("x-zca", RISCVCPU, cfg.ext_zca, false),
     DEFINE_PROP_BOOL("x-zcb", RISCVCPU, cfg.ext_zcb, false),
     DEFINE_PROP_BOOL("x-zcd", RISCVCPU, cfg.ext_zcd, false),
+    DEFINE_PROP_BOOL("x-zce", RISCVCPU, cfg.ext_zce, false),
     DEFINE_PROP_BOOL("x-zcf", RISCVCPU, cfg.ext_zcf, false),
     DEFINE_PROP_BOOL("x-zcmp", RISCVCPU, cfg.ext_zcmp, false),
     DEFINE_PROP_BOOL("x-zcmt", RISCVCPU, cfg.ext_zcmt, false),

diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index 8d66365..5f38b0a 100644 (file)
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -443,6 +443,7 @@ struct RISCVCPUConfig {
     bool ext_zca;
     bool ext_zcb;
     bool ext_zcd;
+    bool ext_zce;
     bool ext_zcf;
     bool ext_zcmp;
     bool ext_zcmt;