This patch implements v0.4.9 SMMPT
specification(https://github.com/riscv/riscv-smmtt/releases/tag/v0.4.9).

Co-authored-by: Huang Tao <eric.huang@linux.alibaba.com>
Co-authored-by: TANG Tiancheng <lyndra@linux.alibaba.com>
Signed-off-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Chao Liu <chao.liu.zevorn@gmail.com>
Reviewed-by: Frank Chang <frank.chang@sifive.com>
---
 target/riscv/cpu.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 727b2924a6..5f8455dae2 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -265,8 +265,10 @@ const RISCVIsaExtData isa_edata_arr[] = {
     ISA_EXT_DATA_ENTRY(smepmp, PRIV_VERSION_1_12_0, ext_smepmp),
     ISA_EXT_DATA_ENTRY(smpmpmt, PRIV_VERSION_1_12_0, ext_smpmpmt),
     ISA_EXT_DATA_ENTRY(smmpm, PRIV_VERSION_1_13_0, ext_smmpm),
+    ISA_EXPERIMENTAL_EXT_DATA_ENTRY(smmpt, PRIV_VERSION_1_13_0, ext_smmpt),
     ISA_EXT_DATA_ENTRY(smnpm, PRIV_VERSION_1_13_0, ext_smnpm),
     ISA_EXT_DATA_ENTRY(smrnmi, PRIV_VERSION_1_12_0, ext_smrnmi),
+    ISA_EXPERIMENTAL_EXT_DATA_ENTRY(smsdid, PRIV_VERSION_1_13_0, ext_smsdid),
     ISA_EXT_DATA_ENTRY(smstateen, PRIV_VERSION_1_12_0, ext_smstateen),
     ISA_EXT_DATA_ENTRY(ssaia, PRIV_VERSION_1_12_0, ext_ssaia),
     ISA_EXT_DATA_ENTRY(ssccfg, PRIV_VERSION_1_13_0, ext_ssccfg),
@@ -2852,6 +2854,15 @@ static RISCVCPUImpliedExtsRule ZVFBFA_IMPLIED = {
     },
 };
 
+static RISCVCPUImpliedExtsRule SMMPT_IMPLIED = {
+    .ext = CPU_CFG_OFFSET(ext_smmpt),
+    .implied_multi_exts = {
+        CPU_CFG_OFFSET(ext_smsdid),
+
+        RISCV_IMPLIED_EXTS_RULE_END
+    },
+};
+
 RISCVCPUImpliedExtsRule *riscv_misa_ext_implied_rules[] = {
     &RVA_IMPLIED, &RVD_IMPLIED, &RVF_IMPLIED,
     &RVM_IMPLIED, &RVV_IMPLIED, &RVG_IMPLIED,
@@ -2873,7 +2884,7 @@ RISCVCPUImpliedExtsRule *riscv_multi_ext_implied_rules[] = {
     &ZVKS_IMPLIED,  &ZVKSC_IMPLIED, &ZVKSG_IMPLIED, &SHA_IMPLIED,
     &SSCFG_IMPLIED, &SUPM_IMPLIED, &SSPM_IMPLIED, &SMCTR_IMPLIED,
     &SSCTR_IMPLIED, &SSSTATEEN_IMPLIED,
-    NULL
+    &SMMPT_IMPLIED, NULL
 };
 
 static const Property riscv_cpu_properties[] = {
-- 
2.43.0