[PATCH RESEND v5 13/26] hw/core/cpu: Return static value with gdb_arch_name()

[Akihiko Odaki]

All implementations of gdb_arch_name() returns dynamic duplicates of
static strings. It's also unlikely that there will be an implementation
of gdb_arch_name() that returns a truly dynamic value due to the nature
of the function returning a well-known identifiers. Qualify the value
gdb_arch_name() with const and make all of its implementations return
static strings.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
---
 include/hw/core/cpu.h  | 2 +-
 target/ppc/internal.h  | 2 +-
 gdbstub/gdbstub.c      | 4 +---
 target/arm/cpu.c       | 6 +++---
 target/arm/cpu64.c     | 4 ++--
 target/i386/cpu.c      | 6 +++---
 target/loongarch/cpu.c | 4 ++--
 target/ppc/gdbstub.c   | 6 +++---
 target/riscv/cpu.c     | 6 +++---
 target/s390x/cpu.c     | 4 ++--
 target/tricore/cpu.c   | 4 ++--
 11 files changed, 23 insertions(+), 25 deletions(-)

diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
index 84219c1885..09f1aca624 100644
--- a/include/hw/core/cpu.h
+++ b/include/hw/core/cpu.h
@@ -165,7 +165,7 @@ struct CPUClass {
     vaddr (*gdb_adjust_breakpoint)(CPUState *cpu, vaddr addr);
 
     const GDBFeature *gdb_core_feature;
-    gchar * (*gdb_arch_name)(CPUState *cpu);
+    const gchar * (*gdb_arch_name)(CPUState *cpu);
     const char * (*gdb_get_dynamic_xml)(CPUState *cpu, const char *xmlname);
 
     void (*disas_set_info)(CPUState *cpu, disassemble_info *info);
diff --git a/target/ppc/internal.h b/target/ppc/internal.h
index 57acb3212c..974b37aa60 100644
--- a/target/ppc/internal.h
+++ b/target/ppc/internal.h
@@ -221,7 +221,7 @@ void destroy_ppc_opcodes(PowerPCCPU *cpu);
 
 /* gdbstub.c */
 void ppc_gdb_init(CPUState *cs, PowerPCCPUClass *ppc);
-gchar *ppc_gdb_arch_name(CPUState *cs);
+const gchar *ppc_gdb_arch_name(CPUState *cs);
 
 /**
  * prot_for_access_type:
diff --git a/gdbstub/gdbstub.c b/gdbstub/gdbstub.c
index ee6b8b98c8..5656a44970 100644
--- a/gdbstub/gdbstub.c
+++ b/gdbstub/gdbstub.c
@@ -378,11 +378,9 @@ static const char *get_feature_xml(const char *p, const 
char **newp,
                     "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">"
                     "<target>");
             if (cc->gdb_arch_name) {
-                gchar *arch = cc->gdb_arch_name(cpu);
                 pstrcat(buf, buf_sz, "<architecture>");
-                pstrcat(buf, buf_sz, arch);
+                pstrcat(buf, buf_sz, cc->gdb_arch_name(cpu));
                 pstrcat(buf, buf_sz, "</architecture>");
-                g_free(arch);
             }
             pstrcat(buf, buf_sz, "<xi:include href=\"");
             pstrcat(buf, buf_sz, cc->gdb_core_feature->xmlname);
diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index a206ab6b1b..5f07133419 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -2281,15 +2281,15 @@ static Property arm_cpu_properties[] = {
     DEFINE_PROP_END_OF_LIST()
 };
 
-static gchar *arm_gdb_arch_name(CPUState *cs)
+static const gchar *arm_gdb_arch_name(CPUState *cs)
 {
     ARMCPU *cpu = ARM_CPU(cs);
     CPUARMState *env = &cpu->env;
 
     if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
-        return g_strdup("iwmmxt");
+        return "iwmmxt";
     }
-    return g_strdup("arm");
+    return "arm";
 }
 
 #ifndef CONFIG_USER_ONLY
diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c
index 9c2a226159..65f84bfb18 100644
--- a/target/arm/cpu64.c
+++ b/target/arm/cpu64.c
@@ -743,9 +743,9 @@ static void aarch64_cpu_finalizefn(Object *obj)
 {
 }
 
-static gchar *aarch64_gdb_arch_name(CPUState *cs)
+static const gchar *aarch64_gdb_arch_name(CPUState *cs)
 {
-    return g_strdup("aarch64");
+    return "aarch64";
 }
 
 static void aarch64_cpu_class_init(ObjectClass *oc, void *data)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 069410985f..c1a7667f4a 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -5910,12 +5910,12 @@ static void x86_cpu_load_model(X86CPU *cpu, X86CPUModel 
*model)
     memset(&env->user_features, 0, sizeof(env->user_features));
 }
 
-static gchar *x86_gdb_arch_name(CPUState *cs)
+static const gchar *x86_gdb_arch_name(CPUState *cs)
 {
 #ifdef TARGET_X86_64
-    return g_strdup("i386:x86-64");
+    return "i386:x86-64";
 #else
-    return g_strdup("i386");
+    return "i386";
 #endif
 }
 
diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
index b204cb279d..6c76d14e43 100644
--- a/target/loongarch/cpu.c
+++ b/target/loongarch/cpu.c
@@ -692,9 +692,9 @@ static const struct SysemuCPUOps loongarch_sysemu_ops = {
 };
 #endif
 
-static gchar *loongarch_gdb_arch_name(CPUState *cs)
+static const gchar *loongarch_gdb_arch_name(CPUState *cs)
 {
-    return g_strdup("loongarch64");
+    return "loongarch64";
 }
 
 static void loongarch_cpu_class_init(ObjectClass *c, void *data)
diff --git a/target/ppc/gdbstub.c b/target/ppc/gdbstub.c
index 70cac919e0..dbdee7d56e 100644
--- a/target/ppc/gdbstub.c
+++ b/target/ppc/gdbstub.c
@@ -572,12 +572,12 @@ static int gdb_set_vsx_reg(CPUPPCState *env, uint8_t 
*mem_buf, int n)
     return 0;
 }
 
-gchar *ppc_gdb_arch_name(CPUState *cs)
+const gchar *ppc_gdb_arch_name(CPUState *cs)
 {
 #if defined(TARGET_PPC64)
-    return g_strdup("powerpc:common64");
+    return "powerpc:common64";
 #else
-    return g_strdup("powerpc:common");
+    return "powerpc:common";
 #endif
 }
 
diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index ceca40cdd9..86a477bfc0 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -1941,17 +1941,17 @@ static Property riscv_cpu_properties[] = {
     DEFINE_PROP_END_OF_LIST(),
 };
 
-static gchar *riscv_gdb_arch_name(CPUState *cs)
+static const gchar *riscv_gdb_arch_name(CPUState *cs)
 {
     RISCVCPU *cpu = RISCV_CPU(cs);
     CPURISCVState *env = &cpu->env;
 
     switch (riscv_cpu_mxl(env)) {
     case MXL_RV32:
-        return g_strdup("riscv:rv32");
+        return "riscv:rv32";
     case MXL_RV64:
     case MXL_RV128:
-        return g_strdup("riscv:rv64");
+        return "riscv:rv64";
     default:
         g_assert_not_reached();
     }
diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
index 2a2ff8cbdc..ca356c2b86 100644
--- a/target/s390x/cpu.c
+++ b/target/s390x/cpu.c
@@ -284,9 +284,9 @@ static void s390_cpu_initfn(Object *obj)
 #endif
 }
 
-static gchar *s390_gdb_arch_name(CPUState *cs)
+static const gchar *s390_gdb_arch_name(CPUState *cs)
 {
-    return g_strdup("s390:64-bit");
+    return "s390:64-bit";
 }
 
 static Property s390x_cpu_properties[] = {
diff --git a/target/tricore/cpu.c b/target/tricore/cpu.c
index 133a9ac70e..44e3ba6f0e 100644
--- a/target/tricore/cpu.c
+++ b/target/tricore/cpu.c
@@ -29,9 +29,9 @@ static inline void set_feature(CPUTriCoreState *env, int 
feature)
     env->features |= 1ULL << feature;
 }
 
-static gchar *tricore_gdb_arch_name(CPUState *cs)
+static const gchar *tricore_gdb_arch_name(CPUState *cs)
 {
-    return g_strdup("tricore");
+    return "tricore";
 }
 
 static void tricore_cpu_set_pc(CPUState *cs, vaddr value)
-- 
2.41.0