According to the ISA spec of Zvfofp8min extension,

"The Zvfofp8min extension requires on the Zve32f extension."

Reviewed-by: Chao Liu <chao.liu.zevorn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Max Chou <max.chou@sifive.com>
---
 target/riscv/cpu.c                | 1 +
 target/riscv/cpu_cfg_fields.h.inc | 1 +
 target/riscv/tcg/tcg-cpu.c        | 5 +++++
 target/riscv/vector_helper.c      | 3 ++-
 4 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index ce15a17c37..855c6bd4a9 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -194,6 +194,7 @@ const RISCVIsaExtData isa_edata_arr[] = {
     ISA_EXT_DATA_ENTRY(zvfbfwma, PRIV_VERSION_1_12_0, ext_zvfbfwma),
     ISA_EXT_DATA_ENTRY(zvfh, PRIV_VERSION_1_12_0, ext_zvfh),
     ISA_EXT_DATA_ENTRY(zvfhmin, PRIV_VERSION_1_12_0, ext_zvfhmin),
+    ISA_EXT_DATA_ENTRY(zvfofp8min, PRIV_VERSION_1_12_0, ext_zvfofp8min),
     ISA_EXT_DATA_ENTRY(zvkb, PRIV_VERSION_1_12_0, ext_zvkb),
     ISA_EXT_DATA_ENTRY(zvkg, PRIV_VERSION_1_12_0, ext_zvkg),
     ISA_EXT_DATA_ENTRY(zvkn, PRIV_VERSION_1_12_0, ext_zvkn),
diff --git a/target/riscv/cpu_cfg_fields.h.inc b/target/riscv/cpu_cfg_fields.h.inc
index 734fa079f2..f9cd79bae0 100644
--- a/target/riscv/cpu_cfg_fields.h.inc
+++ b/target/riscv/cpu_cfg_fields.h.inc
@@ -105,6 +105,7 @@ BOOL_FIELD(ext_zvfbfmin)
 BOOL_FIELD(ext_zvfbfwma)
 BOOL_FIELD(ext_zvfh)
 BOOL_FIELD(ext_zvfhmin)
+BOOL_FIELD(ext_zvfofp8min)
 BOOL_FIELD(ext_smaia)
 BOOL_FIELD(ext_ssaia)
 BOOL_FIELD(ext_smctr)
diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
index f3f7808895..40e7c72976 100644
--- a/target/riscv/tcg/tcg-cpu.c
+++ b/target/riscv/tcg/tcg-cpu.c
@@ -710,6 +710,11 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp)
         return;
     }
 
+    if (cpu->cfg.ext_zvfofp8min && !cpu->cfg.ext_zve32f) {
+        error_setg(errp, "Zvfofp8min extension depends on Zve32f extension");
+        return;
+    }
+
     if (cpu->cfg.ext_zvfh && !cpu->cfg.ext_zfhmin) {
         error_setg(errp, "Zvfh extensions requires Zfhmin extension");
         return;
diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c
index 60e2d42301..73437c1d20 100644
--- a/target/riscv/vector_helper.c
+++ b/target/riscv/vector_helper.c
@@ -38,7 +38,8 @@ static target_ulong vtype_reserved(CPURISCVState *env, target_ulong vtype)
     int xlen = riscv_cpu_xlen(env);
     target_ulong reserved = 0;
 
-    if (riscv_cpu_cfg(env)->ext_zvfbfa) {
+    if (riscv_cpu_cfg(env)->ext_zvfbfa ||
+        riscv_cpu_cfg(env)->ext_zvfofp8min) {
         reserved = vtype & MAKE_64BIT_MASK(R_VTYPE_RESERVED_SHIFT,
                                            xlen - 1 - R_VTYPE_RESERVED_SHIFT);
     } else {
-- 
2.52.0