[PATCH 12/27] target/microblaze: Implement and register CPUClass::exception_name()

["Philippe Mathieu-Daudé" <philmd@oss.qualcomm.com>]

Implement microblaze_exception_name() and register it as the
CPUClass::exception_name() handler, so the common exception
logging can resolve MicroBlaze exception codes to names.

Signed-off-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
---
 target/microblaze/cpu.h |  2 ++
 target/microblaze/cpu.c | 17 +++++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/target/microblaze/cpu.h b/target/microblaze/cpu.h
index b9602f72b94..fc2783693e3 100644
--- a/target/microblaze/cpu.h
+++ b/target/microblaze/cpu.h
@@ -36,6 +36,8 @@ typedef struct CPUArchState CPUMBState;
 #define EXCP_HW_BREAK   4
 #define EXCP_HW_EXCP    5
 
+const char *microblaze_exception_name(int excp);
+
 /* MicroBlaze-specific interrupt pending bits.  */
 #define CPU_INTERRUPT_NMI       CPU_INTERRUPT_TGT_EXT_3
 
diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c
index 389a5124b12..224f1052f70 100644
--- a/target/microblaze/cpu.c
+++ b/target/microblaze/cpu.c
@@ -79,6 +79,22 @@ static const struct {
 /* If no specific version gets selected, default to the following.  */
 #define DEFAULT_CPU_VERSION "10.0"
 
+const char *microblaze_exception_name(int excp)
+{
+    static const char * const excp_names[] = {
+        [EXCP_MMU]      = "mmu",
+        [EXCP_IRQ]      = "irq",
+        [EXCP_SYSCALL]  = "syscall",
+        [EXCP_HW_BREAK] = "hw break",
+        [EXCP_HW_EXCP]  = "hw excp",
+    };
+
+    if (excp < 0 || excp >= ARRAY_SIZE(excp_names) || !excp_names[excp]) {
+        return "unknown";
+    }
+    return excp_names[excp];
+}
+
 static void mb_cpu_set_pc(CPUState *cs, vaddr value)
 {
     MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
@@ -469,6 +485,7 @@ static void mb_cpu_class_init(ObjectClass *oc, const void *data)
                                        &mcc->parent_phases);
 
     cc->class_by_name = mb_cpu_class_by_name;
+    cc->exception_name = microblaze_exception_name;
     cc->dump_state = mb_cpu_dump_state;
     cc->set_pc = mb_cpu_set_pc;
     cc->get_pc = mb_cpu_get_pc;
-- 
2.55.0