[PATCH v3] score: PR1607: Add and use CPU_SIZEOF_POINTER

Ralf Corsepius ralf.corsepius at rtems.org
Thu Nov 8 09:33:31 UTC 2012

On 11/08/2012 09:27 AM, Sebastian Huber wrote:
> Add and use new CPU port define CPU_SIZEOF_POINTER.  It must be an
> integer literal that can be used by the assembler.  This value will be
> used to calculate offsets of structure members.  These offsets will be
> used in assembler code.
> The size of a pointer is part of the application binary interface (ABI)
> and thus independent of the actual programming language.  The compiler
> will provide defines to determine the current ABI.  We use these defines
> to select the appropriate CPU_SIZEOF_POINTER value.
> Static assertions in the new file "cpukit/score/src/percpuasm.c" will
> ensure that the value of CPU_SIZEOF_POINTER is consistent with the
> current compiler settings.  Also the offset values used by assembler
> code are verfied.

Again, this approach lacks generality and is fundametally flawed.

It's just a random accident it appears to work for some targets.

This patch is NOT OK and MUST NOT BE APPLIED.


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