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