qemu/target-loongarch-fix-Werror-maybe-uninitialized-fals.patch

From 1b5bad7f9b10bba438fe12082c8aa29805c03092 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Tue, 24 Sep 2024 15:49:47 +0400
Subject: [PATCH 53/78] target/loongarch: fix -Werror=maybe-uninitialized
 false-positive
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../target/loongarch/gdbstub.c:55:20: error: ‘val’ may be used uninitialized [-Werror=maybe-uninitialized]
   55 |             return gdb_get_reg32(mem_buf, val);
      |                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~
../target/loongarch/gdbstub.c:39:18: note: ‘val’ was declared here
   39 |         uint64_t val;

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
---
 target/loongarch/gdbstub.c | 29 +++++++++++++++--------------
 1 file changed, 15 insertions(+), 14 deletions(-)

diff --git a/target/loongarch/gdbstub.c b/target/loongarch/gdbstub.c
index 5fc2f19e96..f8e3324bae 100644
--- a/target/loongarch/gdbstub.c
+++ b/target/loongarch/gdbstub.c
@@ -33,28 +33,29 @@ void write_fcc(CPULoongArchState *env, uint64_t val)
 
 int loongarch_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n)
 {
-    LoongArchCPU *cpu = LOONGARCH_CPU(cs);
-    CPULoongArchState *env = &cpu->env;
-    uint64_t val;
-
-    if (0 <= n && n < 32) {
-        val = env->gpr[n];
-    } else if (n == 32) {
-        /* orig_a0 */
-        val = 0;
-    } else if (n == 33) {
-        val = env->pc;
-    } else if (n == 34) {
-        val = env->CSR_BADV;
-    }
+    CPULoongArchState *env = cpu_env(cs);
 
     if (0 <= n && n <= 34) {
+        uint64_t val;
+
+        if (n < 32) {
+            val = env->gpr[n];
+        } else if (n == 32) {
+            /* orig_a0 */
+            val = 0;
+        } else if (n == 33) {
+            val = env->pc;
+        } else /* if (n == 34) */ {
+            val = env->CSR_BADV;
+        }
+
         if (is_la64(env)) {
             return gdb_get_reg64(mem_buf, val);
         } else {
             return gdb_get_reg32(mem_buf, val);
         }
     }
+
     return 0;
 }
 
-- 
2.39.1