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/* -----------------------------------------------------------------------------
*
* (c) The GHC Team, 1998-2011
*
* Registers used in STG code. Might or might not correspond to
* actual machine registers.
*
* Do not #include this file directly: #include "Rts.h" instead.
*
* To understand the structure of the RTS headers, see the wiki:
* http://hackage.haskell.org/trac/ghc/wiki/Commentary/SourceTree/Includes
*
* ---------------------------------------------------------------------------*/
#ifndef RTSMACHREGS_H
#define RTSMACHREGS_H
/*
* Defining NO_REGS causes no global registers to be used. NO_REGS is
* typically defined by GHC, via a command-line option passed to gcc,
* when the -funregisterised flag is given.
*
* NB. When NO_REGS is on, calling & return conventions may be
* different. For example, all function arguments will be passed on
* the stack, and components of an unboxed tuple will be returned on
* the stack rather than in registers.
*/
#ifdef NO_REGS
#define MACHREGS_NO_REGS 1
#else
#define MACHREGS_NO_REGS 0
#define MACHREGS_i386 i386_HOST_ARCH
#define MACHREGS_x86_64 x86_64_HOST_ARCH
#define MACHREGS_powerpc (powerpc_HOST_ARCH || powerpc64_HOST_ARCH || rs6000_HOST_ARCH)
#define MACHREGS_sparc sparc_HOST_ARCH
#define MACHREGS_arm arm_HOST_ARCH
#define MACHREGS_darwin darwin_HOST_OS
#endif
#include "stg/MachRegs.h"
#endif /* RTSMACHREGS_H */
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