1/*	$OpenBSD: asm.h,v 1.7 2004/10/20 12:49:15 pefo Exp $ */
2
3/*
4 * Copyright (c) 2001-2002 Opsycon AB  (www.opsycon.se / www.opsycon.com)
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 */
28#ifndef _MIPS64_ASM_H
29#define _MIPS64_ASM_H
30
31#define __bionic_asm_align 4
32
33#undef __bionic_asm_custom_entry
34#undef __bionic_asm_custom_end
35#define __bionic_asm_custom_entry(f) .ent f
36#define __bionic_asm_custom_end(f) .end f
37
38#include <machine/regdef.h>
39
40#define	_MIPS_ISA_MIPS1	1	/* R2000/R3000 */
41#define	_MIPS_ISA_MIPS2	2	/* R4000/R6000 */
42#define	_MIPS_ISA_MIPS3	3	/* R4000 */
43#define	_MIPS_ISA_MIPS4	4	/* TFP (R1x000) */
44#define	_MIPS_ISA_MIPS5 5
45#define	_MIPS_ISA_MIPS32 6
46#define	_MIPS_ISA_MIPS64 7
47
48#if !defined(ABICALLS) && !defined(_NO_ABICALLS)
49#define	ABICALLS	.abicalls
50#endif
51
52#if defined(ABICALLS) && !defined(_KERNEL)
53	ABICALLS
54#endif
55
56#if !defined(__MIPSEL__) && !defined(__MIPSEB__)
57#error "__MIPSEL__ or __MIPSEB__ must be defined"
58#endif
59/*
60 * Define how to access unaligned data word
61 */
62#if defined(__MIPSEL__)
63#define LWLO    lwl
64#define LWHI    lwr
65#define	SWLO	swl
66#define	SWHI	swr
67#define LDLO    ldl
68#define LDHI    ldr
69#define	SDLO	sdl
70#define	SDHI	sdr
71#endif
72#if defined(__MIPSEB__)
73#define LWLO    lwr
74#define LWHI    lwl
75#define	SWLO	swr
76#define	SWHI	swl
77#define LDLO    ldr
78#define LDHI    ldl
79#define	SDLO	sdr
80#define	SDHI	sdl
81#endif
82
83/*
84 *  Define programming environment for ABI.
85 */
86#if defined(ABICALLS) && !defined(_KERNEL) && !defined(_STANDALONE)
87
88#if (_MIPS_SIM == _ABIO32) || (_MIPS_SIM == _ABI32)
89#define NARGSAVE	4
90
91#define	SETUP_GP		\
92	.set	noreorder;	\
93	.cpload	t9;		\
94	.set	reorder;
95
96#define	SAVE_GP(x)		\
97	.cprestore x
98
99#define	SETUP_GP64(gpoff, name)
100#define	RESTORE_GP64
101#endif
102
103#if (_MIPS_SIM == _ABI64) || (_MIPS_SIM == _ABIN32)
104#define NARGSAVE	0
105
106#define	SETUP_GP
107#define	SAVE_GP(x)
108#define	SETUP_GP64(gpoff, name)	\
109	.cpsetup t9, gpoff, name
110#define	RESTORE_GP64		\
111	.cpreturn
112#endif
113
114#define	MKFSIZ(narg,locals) (((narg+locals)*REGSZ+31)&(~31))
115
116#else /* defined(ABICALLS) && !defined(_KERNEL) */
117
118#define	NARGSAVE	4
119#define	SETUP_GP
120#define	SAVE_GP(x)
121
122#define	ALIGNSZ		16	/* Stack layout alignment */
123#define	FRAMESZ(sz)	(((sz) + (ALIGNSZ-1)) & ~(ALIGNSZ-1))
124
125#endif
126
127/*
128 *  Basic register operations based on selected ISA
129 */
130#if (_MIPS_ISA == _MIPS_ISA_MIPS1 || _MIPS_ISA == _MIPS_ISA_MIPS2 || _MIPS_ISA == _MIPS_ISA_MIPS32)
131#define REGSZ		4	/* 32 bit mode register size */
132#define LOGREGSZ	2	/* log rsize */
133#define	REG_S	sw
134#define	REG_L	lw
135#define	CF_SZ		24	/* Call frame size */
136#define	CF_ARGSZ	16	/* Call frame arg size */
137#define	CF_RA_OFFS	20	/* Call ra save offset */
138#endif
139
140#if (_MIPS_ISA == _MIPS_ISA_MIPS3 || _MIPS_ISA == _MIPS_ISA_MIPS4 || _MIPS_ISA == _MIPS_ISA_MIPS64)
141#define REGSZ		8	/* 64 bit mode register size */
142#define LOGREGSZ	3	/* log rsize */
143#define	REG_S	sd
144#define	REG_L	ld
145#define	CF_SZ		48	/* Call frame size (multiple of ALIGNSZ) */
146#define	CF_ARGSZ	32	/* Call frame arg size */
147#define	CF_RA_OFFS	40	/* Call ra save offset */
148#endif
149
150#define REGSZ_FP	 8	/* 64 bit FP register size */
151
152#ifndef __LP64__
153#define	PTR_L		lw
154#define	PTR_S		sw
155#define	PTR_SUB		sub
156#define	PTR_ADD		add
157#define	PTR_SUBU	subu
158#define	PTR_ADDU	addu
159#define LI		li
160#define	LA		la
161#define	PTR_SLL		sll
162#define	PTR_SRL		srl
163#define	PTR_VAL		.word
164#else
165#define	PTR_L		ld
166#define	PTR_S		sd
167#define	PTR_ADD		dadd
168#define	PTR_SUB		dsub
169#define	PTR_SUBU	dsubu
170#define	PTR_ADDU	daddu
171#define LI		dli
172#define LA		dla
173#define	PTR_SLL		dsll
174#define	PTR_SRL		dsrl
175#define	PTR_VAL		.dword
176#endif
177
178/*
179 * LEAF(x, fsize)
180 *
181 *	Declare a leaf routine.
182 */
183#define LEAF(x, fsize)		\
184	.align	3;		\
185	.globl x;		\
186	.ent x, 0;		\
187x: ;				\
188	.cfi_startproc; \
189	.frame sp, fsize, ra;	\
190	SETUP_GP		\
191
192/*
193 * NON_LEAF(x)
194 *
195 *	Declare a non-leaf routine (a routine that makes other C calls).
196 */
197#define NON_LEAF(x, fsize, retpc) \
198	.align	3;		\
199	.globl x;		\
200	.ent x, 0;		\
201x: ;				\
202	.cfi_startproc; \
203	.frame sp, fsize, retpc; \
204	SETUP_GP		\
205
206#endif /* !_MIPS_ASM_H */
207