gdb: provide the name of the architecture in the target.xml

This patch provides the name of the architecture in the target.xml
if available.

This allows the remote gdb to detect the target architecture on its
own - so there is no need to specify it manually (e.g. if gdb is
started without a binary) using "set arch *arch_name*".

The name of the architecture is provided by a callback that can
be implemented by all architectures. The arm implementation has
special handling for iwmmxt and returns arm otherwise. This can
be extended if necessary.

Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
[rework to use a callback]
Message-Id: <1449144881-130935-1-git-send-email-borntraeger@de.ibm.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/target-s390x/cpu.c b/target-s390x/cpu.c
index e5a3f65..792310e 100644
--- a/target-s390x/cpu.c
+++ b/target-s390x/cpu.c
@@ -325,6 +325,11 @@ unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu)
 }
 #endif
 
+static gchar *s390_gdb_arch_name(CPUState *cs)
+{
+    return g_strdup("s390:64-bit");
+}
+
 static void s390_cpu_class_init(ObjectClass *oc, void *data)
 {
     S390CPUClass *scc = S390_CPU_CLASS(oc);
@@ -360,6 +365,7 @@ static void s390_cpu_class_init(ObjectClass *oc, void *data)
 
     cc->gdb_num_core_regs = S390_NUM_CORE_REGS;
     cc->gdb_core_xml_file = "s390x-core64.xml";
+    cc->gdb_arch_name = s390_gdb_arch_name;
 
     /*
      * Reason: s390_cpu_initfn() calls cpu_exec_init(), which saves