text: /*	$OpenBSD: asm.h,v 1.7 2004/10/20 12:49:15 pefo Exp $ */
  
  /*
   * Copyright (c) 2001-2002 Opsycon AB  (www.opsycon.se / www.opsycon.com)
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
   * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
   * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   */
  #ifndef _MIPS64_ASM_H
  #define _MIPS64_ASM_H
  
  #define __bionic_asm_align 4
  
  #undef __bionic_asm_custom_entry
  #undef __bionic_asm_custom_end
  #define __bionic_asm_custom_entry(f) .ent f
  #define __bionic_asm_custom_end(f) .end f
  
  #include <machine/regdef.h>
  
  #define	_MIPS_ISA_MIPS1	1	/* R2000/R3000 */
  #define	_MIPS_ISA_MIPS2	2	/* R4000/R6000 */
  #define	_MIPS_ISA_MIPS3	3	/* R4000 */
  #define	_MIPS_ISA_MIPS4	4	/* TFP (R1x000) */
  #define	_MIPS_ISA_MIPS5 5
  #define	_MIPS_ISA_MIPS32 6
  #define	_MIPS_ISA_MIPS64 7
  
  #if !defined(ABICALLS) && !defined(_NO_ABICALLS)
  #define	ABICALLS	.abicalls
  #endif
  
  #if defined(ABICALLS) && !defined(_KERNEL)
  	ABICALLS
  #endif
  
  #if !defined(__MIPSEL__) && !defined(__MIPSEB__)
  #error "__MIPSEL__ or __MIPSEB__ must be defined"
  #endif
  /*
   * Define how to access unaligned data word
   */
  #if defined(__MIPSEL__)
  #define LWLO    lwl
  #define LWHI    lwr
  #define	SWLO	swl
  #define	SWHI	swr
  #define LDLO    ldl
  #define LDHI    ldr
  #define	SDLO	sdl
  #define	SDHI	sdr
  #endif
  #if defined(__MIPSEB__)
  #define LWLO    lwr
  #define LWHI    lwl
  #define	SWLO	swr
  #define	SWHI	swl
  #define LDLO    ldr
  #define LDHI    ldl
  #define	SDLO	sdr
  #define	SDHI	sdl
  #endif
  
  /*
   *  Define programming environment for ABI.
   */
  #if defined(ABICALLS) && !defined(_KERNEL) && !defined(_STANDALONE)
  
  #if (_MIPS_SIM == _ABIO32) || (_MIPS_SIM == _ABI32)
  #define NARGSAVE	4
  
  #define	SETUP_GP		\
  	.set	noreorder;	\
  	.cpload	t9;		\
  	.set	reorder;
  
  #define	SAVE_GP(x)		\
  	.cprestore x
  
  #define	SETUP_GP64(gpoff, name)
  #define	RESTORE_GP64
  #endif
  
  #if (_MIPS_SIM == _ABI64) || (_MIPS_SIM == _ABIN32)
  #define NARGSAVE	0
  
  #define	SETUP_GP
  #define	SAVE_GP(x)
  #define	SETUP_GP64(gpoff, name)	\
  	.cpsetup t9, gpoff, name
  #define	RESTORE_GP64		\
  	.cpreturn
  #endif
  
  #define	MKFSIZ(narg,locals) (((narg+locals)*REGSZ+31)&(~31))
  
  #else /* defined(ABICALLS) && !defined(_KERNEL) */
  
  #define	NARGSAVE	4
  #define	SETUP_GP
  #define	SAVE_GP(x)
  
  #define	ALIGNSZ		16	/* Stack layout alignment */
  #define	FRAMESZ(sz)	(((sz) + (ALIGNSZ-1)) & ~(ALIGNSZ-1))
  
  #endif
  
  /*
   *  Basic register operations based on selected ISA
   */
  #if (_MIPS_ISA == _MIPS_ISA_MIPS1 || _MIPS_ISA == _MIPS_ISA_MIPS2 || _MIPS_ISA == _MIPS_ISA_MIPS32)
  #define REGSZ		4	/* 32 bit mode register size */
  #define LOGREGSZ	2	/* log rsize */
  #define	REG_S	sw
  #define	REG_L	lw
  #define	CF_SZ		24	/* Call frame size */
  #define	CF_ARGSZ	16	/* Call frame arg size */
  #define	CF_RA_OFFS	20	/* Call ra save offset */
  #endif
  
  #if (_MIPS_ISA == _MIPS_ISA_MIPS3 || _MIPS_ISA == _MIPS_ISA_MIPS4 || _MIPS_ISA == _MIPS_ISA_MIPS64)
  #define REGSZ		8	/* 64 bit mode register size */
  #define LOGREGSZ	3	/* log rsize */
  #define	REG_S	sd
  #define	REG_L	ld
  #define	CF_SZ		48	/* Call frame size (multiple of ALIGNSZ) */
  #define	CF_ARGSZ	32	/* Call frame arg size */
  #define	CF_RA_OFFS	40	/* Call ra save offset */
  #endif
  
  #define REGSZ_FP	 8	/* 64 bit FP register size */
  
  #ifndef __LP64__
  #define	PTR_L		lw
  #define	PTR_S		sw
  #define	PTR_SUB		sub
  #define	PTR_ADD		add
  #define	PTR_SUBU	subu
  #define	PTR_ADDU	addu
  #define LI		li
  #define	LA		la
  #define	PTR_SLL		sll
  #define	PTR_SRL		srl
  #define	PTR_VAL		.word
  #else
  #define	PTR_L		ld
  #define	PTR_S		sd
  #define	PTR_ADD		dadd
  #define	PTR_SUB		dsub
  #define	PTR_SUBU	dsubu
  #define	PTR_ADDU	daddu
  #define LI		dli
  #define LA		dla
  #define	PTR_SLL		dsll
  #define	PTR_SRL		dsrl
  #define	PTR_VAL		.dword
  #endif
  
  /*
   * LEAF(x, fsize)
   *
   *	Declare a leaf routine.
   */
  #define LEAF(x, fsize)		\
  	.align	3;		\
  	.globl x;		\
  	.ent x, 0;		\
  x: ;				\
  	.cfi_startproc; \
  	.frame sp, fsize, ra;	\
  	SETUP_GP		\
  
  /*
   * NON_LEAF(x)
   *
   *	Declare a non-leaf routine (a routine that makes other C calls).
   */
  #define NON_LEAF(x, fsize, retpc) \
  	.align	3;		\
  	.globl x;		\
  	.ent x, 0;		\
  x: ;				\
  	.cfi_startproc; \
  	.frame sp, fsize, retpc; \
  	SETUP_GP		\
  
  #endif /* !_MIPS_ASM_H */
  