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| author | Jan Kiszka <jan.kiszka@siemens.com> | 2015-02-17 13:46:58 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-17 14:34:53 -0800 |
| commit | 7f994963745b9cea89a2816dae7cc3a1fc01adcc (patch) | |
| tree | 8f100eb57664208e2f1d42fe3a35e605f9fe3cd7 /scripts | |
| parent | 7b599ef535a7faef53034fb7fb150b61057efe28 (diff) | |
| download | lwn-7f994963745b9cea89a2816dae7cc3a1fc01adcc.tar.gz lwn-7f994963745b9cea89a2816dae7cc3a1fc01adcc.zip | |
scripts/gdb: add get_target_endianness helper
Parse the target endianness from the output of "show endian" and cache the
result to return it via the new helper get_target_endiannes. We will need
it for reading integers from buffers that contain target memory.
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')
| -rw-r--r-- | scripts/gdb/linux/utils.py | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/scripts/gdb/linux/utils.py b/scripts/gdb/linux/utils.py index c9d705b62bfe..10a227bdb621 100644 --- a/scripts/gdb/linux/utils.py +++ b/scripts/gdb/linux/utils.py @@ -67,3 +67,21 @@ Note that TYPE and ELEMENT have to be quoted as strings.""" elementname.string()) ContainerOf() + + +BIG_ENDIAN = 0 +LITTLE_ENDIAN = 1 +target_endianness = None + + +def get_target_endianness(): + global target_endianness + if target_endianness is None: + endian = gdb.execute("show endian", to_string=True) + if "little endian" in endian: + target_endianness = LITTLE_ENDIAN + elif "big endian" in endian: + target_endianness = BIG_ENDIAN + else: + raise gdb.GdgError("unknown endianness '{0}'".format(endian)) + return target_endianness |