This commit makes handle_q_memtag, handle_q_isaddresstagged, and
handle_Q_memtag stubs build for system mode, allowing all GDB
'memory-tag' subcommands to work with QEMU gdbstub on aarch64 system
mode.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/620
Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/gdbstub64.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/target/arm/gdbstub64.c b/target/arm/gdbstub64.c
index 85a19c14c7..9462d3f560 100644
--- a/target/arm/gdbstub64.c
+++ b/target/arm/gdbstub64.c
@@ -430,6 +430,7 @@ int aarch64_gdb_set_tag_ctl_reg(CPUState *cs, uint8_t *buf, int reg)
     return 0;
 #endif
 }
+#endif /* CONFIG_USER_ONLY */
 
 static void handle_q_memtag(GArray *params, void *user_ctx)
 {
@@ -600,12 +601,10 @@ static const GdbCmdParseEntry cmd_handler_table[NUM_CMDS] = {
         .need_cpu_context = true
     },
 };
-#endif /* CONFIG_USER_ONLY */
 
 void aarch64_cpu_register_gdb_commands(ARMCPU *cpu, GString *qsupported,
                                        GPtrArray *qtable, GPtrArray *stable)
 {
-#ifdef CONFIG_USER_ONLY
     /* MTE */
     if (cpu_isar_feature(aa64_mte, cpu)) {
         g_string_append(qsupported, ";memory-tagging+");
@@ -614,5 +613,4 @@ void aarch64_cpu_register_gdb_commands(ARMCPU *cpu, GString *qsupported,
         g_ptr_array_add(qtable, (gpointer) &cmd_handler_table[qIsAddressTagged]);
         g_ptr_array_add(stable, (gpointer) &cmd_handler_table[QMemTags]);
     }
-#endif
 }
-- 
2.34.1