scripts/gdb: add is_target_arch helper

This helper caches to result of "show architecture" and matches the
provided arch (sub-)string against that output.

Signed-off-by: Jan Kiszka <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Jason Wessel <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Ben Widawsky <[email protected]>
Cc: Borislav Petkov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/scripts/gdb/linux/utils.py b/scripts/gdb/linux/utils.py
index 808a265968273425b668d62373dc9e0d752bad79..71ee48ceb2b2de30866d72847208e602e2bfbf14 100644 (file)
--- a/scripts/gdb/linux/utils.py
+++ b/scripts/gdb/linux/utils.py
@@ -106,3 +106,16 @@ def read_u64(buffer):
         return read_u32(buffer[0:4]) + (read_u32(buffer[4:8]) << 32)
     else:
         return read_u32(buffer[4:8]) + (read_u32(buffer[0:4]) << 32)
+
+
+target_arch = None
+
+
+def is_target_arch(arch):
+    if hasattr(gdb.Frame, 'architecture'):
+        return arch in gdb.newest_frame().architecture().name()
+    else:
+        global target_arch
+        if target_arch is None:
+            target_arch = gdb.execute("show architecture", to_string=True)
+        return arch in target_arch