[PATCH for-8.1 01/17] target/riscv/cpu.c: add riscv_cpu_validate_v()

[Daniel Henrique Barboza <dbarboza@ventanamicro.com>]

The code that validates ext_v in riscv_cpu_validate_set_extensions() is
not properly indented - we're missing an extra indent level right after
the first check that uses cfg->elen.

In the end the 'v' verification is a bit too large in comparison with
the others, and can be put in a separated function to enhance the
readability of riscv_cpu_validate_set_extensions().

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
---
 target/riscv/cpu.c | 83 ++++++++++++++++++++++++++--------------------
 1 file changed, 47 insertions(+), 36 deletions(-)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 1e97473af2..5060a98b6d 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -802,6 +802,46 @@ static void riscv_cpu_disas_set_info(CPUState *s, disassemble_info *info)
     }
 }
 
+static void riscv_cpu_validate_v(CPURISCVState *env, RISCVCPUConfig *cfg,
+                                 Error **errp)
+{
+    int vext_version = VEXT_VERSION_1_00_0;
+
+    if (!is_power_of_2(cfg->vlen)) {
+        error_setg(errp, "Vector extension VLEN must be power of 2");
+        return;
+    }
+    if (cfg->vlen > RV_VLEN_MAX || cfg->vlen < 128) {
+        error_setg(errp,
+                   "Vector extension implementation only supports VLEN "
+                   "in the range [128, %d]", RV_VLEN_MAX);
+        return;
+    }
+    if (!is_power_of_2(cfg->elen)) {
+        error_setg(errp, "Vector extension ELEN must be power of 2");
+        return;
+    }
+    if (cfg->elen > 64 || cfg->elen < 8) {
+        error_setg(errp,
+                   "Vector extension implementation only supports ELEN "
+                   "in the range [8, 64]");
+        return;
+    }
+    if (cfg->vext_spec) {
+        if (!g_strcmp0(cfg->vext_spec, "v1.0")) {
+            vext_version = VEXT_VERSION_1_00_0;
+        } else {
+            error_setg(errp, "Unsupported vector spec version '%s'",
+                       cfg->vext_spec);
+            return;
+        }
+    } else {
+        qemu_log("vector version is not specified, "
+                 "use the default value v1.0\n");
+    }
+    set_vext_version(env, vext_version);
+}
+
 /*
  * Check consistency between chosen extensions while setting
  * cpu->cfg accordingly, doing a set_misa() in the end.
@@ -993,44 +1033,15 @@ static void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp)
         ext |= RVH;
     }
     if (cpu->cfg.ext_v) {
-        int vext_version = VEXT_VERSION_1_00_0;
-        ext |= RVV;
-        if (!is_power_of_2(cpu->cfg.vlen)) {
-            error_setg(errp,
-                       "Vector extension VLEN must be power of 2");
-            return;
-        }
-        if (cpu->cfg.vlen > RV_VLEN_MAX || cpu->cfg.vlen < 128) {
-            error_setg(errp,
-                       "Vector extension implementation only supports VLEN "
-                       "in the range [128, %d]", RV_VLEN_MAX);
-            return;
-        }
-        if (!is_power_of_2(cpu->cfg.elen)) {
-            error_setg(errp,
-                       "Vector extension ELEN must be power of 2");
-            return;
-        }
-        if (cpu->cfg.elen > 64 || cpu->cfg.elen < 8) {
-            error_setg(errp,
-                       "Vector extension implementation only supports ELEN "
-                       "in the range [8, 64]");
+        Error *local_err = NULL;
+
+        riscv_cpu_validate_v(env, &cpu->cfg, &local_err);
+        if (local_err != NULL) {
+            error_propagate(errp, local_err);
             return;
         }
-        if (cpu->cfg.vext_spec) {
-            if (!g_strcmp0(cpu->cfg.vext_spec, "v1.0")) {
-                vext_version = VEXT_VERSION_1_00_0;
-            } else {
-                error_setg(errp,
-                           "Unsupported vector spec version '%s'",
-                           cpu->cfg.vext_spec);
-                return;
-            }
-        } else {
-            qemu_log("vector version is not specified, "
-                     "use the default value v1.0\n");
-        }
-        set_vext_version(env, vext_version);
+
+        ext |= RVV;
     }
     if (cpu->cfg.ext_j) {
         ext |= RVJ;
-- 
2.39.2