[rfc] Handle DWARF-2 value pieces residing in *parts* of a register
Mon Dec 21 20:36:00 GMT 2009
>>>>> "Ulrich" == Ulrich Weigand <email@example.com> writes:
Ulrich> Now, according to the DWARF-2 standard, the location of register pieces
Ulrich> of smaller than full register size is defined by the platform ABI.
Ulrich> For the placement of a small value in a *single* register we have a
Ulrich> gdbarch callback (gdbarch_value_from_register); maybe we need something
Ulrich> like that for value pieces as well. At the very least, we ought to
Ulrich> you the same default as default_value_from_register does: assume
Ulrich> partial register use implies the least-significant part of the register.
Ulrich> The patch below implements this.
I think this seems reasonable.
It seems straightforward enough to add an arch method if we ever
actually need one. I wouldn't worry about it unless we already know of
such a machine.
Ulrich> a register, assume the least-signficant part is used.
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