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authorJan Kiszka <jan.kiszka@siemens.com>2015-02-18 00:47:18 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-18 01:34:54 +0300
commita4d86792c78d23257ab8ddd29ca16ce597361403 (patch)
tree1380a114f8d72d23063c518553293cf4efb54fa6 /scripts/gdb
parentcf7492e933c0df200f8fa46c3684e8bd20890ab2 (diff)
downloadlinux-a4d86792c78d23257ab8ddd29ca16ce597361403.tar.xz
scripts/gdb: add get_gdbserver_type helper
This helper probes the type of the gdb server. Supported are QEMU and KGDB so far. Knowledge about the gdb server is required e.g. to retrieve the current CPU or current task. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts/gdb')
-rw-r--r--scripts/gdb/linux/utils.py35
1 files changed, 35 insertions, 0 deletions
diff --git a/scripts/gdb/linux/utils.py b/scripts/gdb/linux/utils.py
index 71ee48ceb2b2..a4a16403dc56 100644
--- a/scripts/gdb/linux/utils.py
+++ b/scripts/gdb/linux/utils.py
@@ -119,3 +119,38 @@ def is_target_arch(arch):
if target_arch is None:
target_arch = gdb.execute("show architecture", to_string=True)
return arch in target_arch
+
+
+GDBSERVER_QEMU = 0
+GDBSERVER_KGDB = 1
+gdbserver_type = None
+
+
+def get_gdbserver_type():
+ def exit_handler(event):
+ global gdbserver_type
+ gdbserver_type = None
+ gdb.events.exited.disconnect(exit_handler)
+
+ def probe_qemu():
+ try:
+ return gdb.execute("monitor info version", to_string=True) != ""
+ except:
+ return False
+
+ def probe_kgdb():
+ try:
+ thread_info = gdb.execute("info thread 2", to_string=True)
+ return "shadowCPU0" in thread_info
+ except:
+ return False
+
+ global gdbserver_type
+ if gdbserver_type is None:
+ if probe_qemu():
+ gdbserver_type = GDBSERVER_QEMU
+ elif probe_kgdb():
+ gdbserver_type = GDBSERVER_KGDB
+ if not gdbserver_type is None and hasattr(gdb, 'events'):
+ gdb.events.exited.connect(exit_handler)
+ return gdbserver_type