Available Registers (Sparc/RS6000/DecStation etc)

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1 total messages Started by Kevin Cameron Fri, 06 Nov 1992 17:37

#576

Author: Kevin Cameron
Date: Fri, 06 Nov 1992 17:37

31 lines
1165 bytes

I am using registers g4-g7 on sparc (instead of global memory) using the
following macros:


	#ifdef __GNUC__
	#ifdef sparc
	# define REGISTER_0(decl) register decl asm ("g4")
	# define EXT_REG_0(decl)  register decl asm ("g4")
	...
	#endif
	#endif

	....

	ifndef REGISTER_0
	# define REGISTER_0(decl) decl
	# define EXT_REG_0(decl)  extern decl
	#endif


I was wondering if anyone new which registers are reliably usable on an RS6000,
or a DecStation 3100 (or any other machines). 

Thanks,
Kev.
-- 
Kevin Cameron          CLSI, Suite 100, 5457 Twin Knolls Rd., MD 21045, USA
kevin@clsi.com         Tel: (USA) (410) 992 5700 (- 5709) X224
uunet!clsi.com!kevin   Fax:       (410) 992 3536
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