register variables: list?

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register variables: list?
\ skaller (23 Oct 2007)
. \ Dave Korn (23 Oct 2007)
. . \ skaller (24 Oct 2007)

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Subject:	register variables: list?
Group:	Gcc
From:	skaller
Date:	23 Oct 2007

In

http://gcc.gnu.org/onlinedocs/gcc-4.2.2/gcc/Explicit-Reg-Vars.html#Explicit-Reg- Vars

it explains how to use register variables .. but doesn't list them.

Is there a document somewhere which lists

a) each CPU macro name
b) all the registers supported

?

I need to get the stack pointer when __builtin_frame_address(0) isn't
working .. on amd64 this:

register void *stack asm ("%rsp");

appears to work. Also this is the current stack pointer .. not
the frame pointer, which could be different.

--
John Skaller <skaller at users dot sf dot net>
Felix, successor to C++: http://felix.sf.net