[PATCH v4 04/13] scripts/gdb: Add get_target_endianness helper

Jan Kiszka
2013-01-21T17:12:10Z

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>
---
scripts/gdb/utils.py | 17 +++++++++++++++++
1 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/scripts/gdb/utils.py b/scripts/gdb/utils.py
index 2f6eafb..44daa29c 100644
--- a/scripts/gdb/utils.py
+++ b/scripts/gdb/utils.py
@@ -56,3 +56,20 @@ class ContainerOf(gdb.Function):
elementname.string())

ContainerOf()
+
+
+BIG_ENDIAN = 0
+LITTLE_ENDIAN = 1
+target_endianness = None
+
+def get_target_endianness():
+ global target_endianness
+ if target_endianness == None:
+ endian = gdb.execute("show endian", False, True)
+ if endian.find("little endian") >= 0:
+ target_endianness = LITTLE_ENDIAN
+ elif endian.find("big endian") >= 0:
+ target_endianness = BIG_ENDIAN
+ else:
+ raise gdb.GdgError("unknown endianness '%s'" % endian)
+ return target_endianness
--
1.7.3.4