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    Subject[PATCH 05/13] scripts/gdb: Add read_u16/32/64 helpers
    Date
    From: Jan Kiszka <jan.kiszka@siemens.com>

    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/utils.py | 18 ++++++++++++++++++
    1 files changed, 18 insertions(+), 0 deletions(-)

    diff --git a/scripts/gdb/utils.py b/scripts/gdb/utils.py
    index 40356d9..17762c5 100644
    --- a/scripts/gdb/utils.py
    +++ b/scripts/gdb/utils.py
    @@ -70,3 +70,21 @@ def get_target_endianness():
    else:
    raise gdb.GdgError("unknown endianness '%s'" % 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)
    --
    1.7.3.4


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