Messages in this thread Patch in this message | | | From | Jan Kiszka <> | Subject | [PATCH v8 10/22] scripts/gdb: Add read_u16/32/64 helpers | Date | Fri, 6 Jun 2014 19:18:51 +0200 |
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Add helpers for reading integers from target memory buffers. Required when caching the memory access is more efficient than reading individual values via gdb.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> --- scripts/gdb/linux/utils.py | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)
diff --git a/scripts/gdb/linux/utils.py b/scripts/gdb/linux/utils.py index 10a227b..808a265 100644 --- a/scripts/gdb/linux/utils.py +++ b/scripts/gdb/linux/utils.py @@ -85,3 +85,24 @@ def get_target_endianness(): else: raise gdb.GdgError("unknown endianness '{0}'".format(endian)) return target_endianness + + +def read_u16(buffer): + if get_target_endianness() == LITTLE_ENDIAN: + return ord(buffer[0]) + (ord(buffer[1]) << 8) + else: + return ord(buffer[1]) + (ord(buffer[0]) << 8) + + +def read_u32(buffer): + if get_target_endianness() == LITTLE_ENDIAN: + return read_u16(buffer[0:2]) + (read_u16(buffer[2:4]) << 16) + else: + return read_u16(buffer[2:4]) + (read_u16(buffer[0:2]) << 16) + + +def read_u64(buffer): + if get_target_endianness() == LITTLE_ENDIAN: + 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) -- 1.8.1.1.298.ge7eed54
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