[PATCH 1/2] target/riscv: Export sdtrig as an extension and ISA string

[Himanshu Chauhan]

This patch makes the debug trigger (sdtrig) capability
as an extension and exports it as an ISA string. The sdtrig
extension may or may not be implemented in a system. The
        -cpu rv64,sdtrig=<true/false>
option can be used to dynamicaly turn sdtrig extension
on or off.

Signed-off-by: Himanshu Chauhan <hchau...@ventanamicro.com>
---
 target/riscv/cpu.c     | 2 ++
 target/riscv/cpu_cfg.h | 1 +
 2 files changed, 3 insertions(+)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index b07a76ef6b..aaa2d4ff1d 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -143,6 +143,7 @@ const RISCVIsaExtData isa_edata_arr[] = {
     ISA_EXT_DATA_ENTRY(zvkt, PRIV_VERSION_1_12_0, ext_zvkt),
     ISA_EXT_DATA_ENTRY(zhinx, PRIV_VERSION_1_12_0, ext_zhinx),
     ISA_EXT_DATA_ENTRY(zhinxmin, PRIV_VERSION_1_12_0, ext_zhinxmin),
+    ISA_EXT_DATA_ENTRY(sdtrig, PRIV_VERSION_1_12_0, ext_sdtrig),
     ISA_EXT_DATA_ENTRY(smaia, PRIV_VERSION_1_12_0, ext_smaia),
     ISA_EXT_DATA_ENTRY(smepmp, PRIV_VERSION_1_12_0, ext_smepmp),
     ISA_EXT_DATA_ENTRY(smstateen, PRIV_VERSION_1_12_0, ext_smstateen),
@@ -1306,6 +1307,7 @@ const RISCVCPUMultiExtConfig riscv_cpu_extensions[] = {
     MULTI_EXT_CFG_BOOL("zve64d", ext_zve64d, false),
     MULTI_EXT_CFG_BOOL("sstc", ext_sstc, true),
 
+    MULTI_EXT_CFG_BOOL("sdtrig", ext_sdtrig, true),
     MULTI_EXT_CFG_BOOL("smepmp", ext_smepmp, false),
     MULTI_EXT_CFG_BOOL("smstateen", ext_smstateen, false),
     MULTI_EXT_CFG_BOOL("svadu", ext_svadu, true),
diff --git a/target/riscv/cpu_cfg.h b/target/riscv/cpu_cfg.h
index f4605fb190..3d3acc7f90 100644
--- a/target/riscv/cpu_cfg.h
+++ b/target/riscv/cpu_cfg.h
@@ -113,6 +113,7 @@ struct RISCVCPUConfig {
     bool ext_ssaia;
     bool ext_sscofpmf;
     bool ext_smepmp;
+    bool ext_sdtrig;
     bool rvv_ta_all_1s;
     bool rvv_ma_all_1s;
 
-- 
2.34.1