[PATCH 1/8] target/riscv: add riscv_cpu_get_name()

[Daniel Henrique Barboza]

We'll introduce generic errors that will output a CPU type name via its
RISCVCPU pointer. Create a helper for that.

Use the helper in tcg_cpu_realizefn() instead of hardcoding the 'host'
CPU name.

Signed-off-by: Daniel Henrique Barboza <dbarb...@ventanamicro.com>
---
 target/riscv/cpu.c         | 11 +++++++++++
 target/riscv/cpu.h         |  1 +
 target/riscv/tcg/tcg-cpu.c |  4 +++-
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index eeeb08a35a..521bb88538 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -643,6 +643,17 @@ static ObjectClass *riscv_cpu_class_by_name(const char 
*cpu_model)
     return oc;
 }
 
+char *riscv_cpu_get_name(RISCVCPU *cpu)
+{
+    RISCVCPUClass *rcc = RISCV_CPU_GET_CLASS(cpu);
+    const char *typename = object_class_get_name(OBJECT_CLASS(rcc));
+
+    g_assert(g_str_has_suffix(typename, RISCV_CPU_TYPE_SUFFIX));
+
+    return g_strndup(typename,
+                     strlen(typename) - strlen(RISCV_CPU_TYPE_SUFFIX));
+}
+
 static void riscv_cpu_dump_state(CPUState *cs, FILE *f, int flags)
 {
     RISCVCPU *cpu = RISCV_CPU(cs);
diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index 219fe2e9b5..3f11e69223 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -730,6 +730,7 @@ typedef struct isa_ext_data {
     int ext_enable_offset;
 } RISCVIsaExtData;
 extern const RISCVIsaExtData isa_edata_arr[];
+char *riscv_cpu_get_name(RISCVCPU *cpu);
 
 void riscv_add_satp_mode_properties(Object *obj);
 
diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
index 8c052d6fcd..f31aa9bcc4 100644
--- a/target/riscv/tcg/tcg-cpu.c
+++ b/target/riscv/tcg/tcg-cpu.c
@@ -563,7 +563,9 @@ static bool tcg_cpu_realizefn(CPUState *cs, Error **errp)
     Error *local_err = NULL;
 
     if (object_dynamic_cast(OBJECT(cpu), TYPE_RISCV_CPU_HOST)) {
-        error_setg(errp, "'host' CPU is not compatible with TCG acceleration");
+        g_autofree char *name = riscv_cpu_get_name(cpu);
+        error_setg(errp, "'%s' CPU is not compatible with TCG acceleration",
+                   name);
         return false;
     }
 
-- 
2.41.0