/*	RegisterSaveRestore.S
 *		Save and restore all the global registers on a SPARC.
 *
 *	Peter B. Kessler, November 15, 1989 5:42:14 pm PST
 */
 
#include <sun4/asm_linkage.h>

#include "leaf_linkage.h"

/*	Caller must allocate double word aligned block of STATESIZE.
 *	Then you call save_regs(&block) to save 
 *	and restore_regs(&block) to restore.
 *	To find out how much space you need is to call state_size().
 *
 *	The address of the block is passed to save_regs and restore_regs
 *	in %o0, and the return address for save_regs and restore_regs is
 *	in %o7.  The caller must save those registers before calling save_regs
 *	and must restore them after returning from restore_regs. 
 *	You can save those registers and allocate the space by using
 *	the SPARC's save instruction.
 */

ALTENTRY(save_regs_maxi)
	LEAF_SAVE_LOCALS(%o0)
	LEAF_SAVE_OUTS(%o0)
ALTENTRY(save_regs)
	LEAF_SAVE_FLOATS(%o0)
ALTENTRY(save_regs_mini)
	LEAF_SAVE_INS(%o0)
ALTENTRY(save_regs_globals)
	LEAF_SAVE_GLOBALS(%o0)
ENTRY(save_regs_none)
	retl
	nop
	
ALTENTRY(restore_regs_maxi)
	LEAF_RESTORE_LOCALS(%o0)
	LEAF_RESTORE_OUTS(%o0)
ALTENTRY(restore_regs)
	LEAF_RESTORE_FLOATS(%o0)
ALTENTRY(restore_regs_mini)
	LEAF_RESTORE_INS(%o0)
ALTENTRY(restore_regs_globals)
	LEAF_RESTORE_GLOBALS(%o0)
ENTRY(restore_regs_none)
	retl
	nop

ENTRY(reg_state_size)
	GET_STATESIZE()
	retl
	nop