1 /* $OpenBSD: asm.h,v 1.7 2004/10/20 12:49:15 pefo Exp $ */
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
31 #ifndef _ALIGN_TEXT
32 # define _ALIGN_TEXT .align 4
33 #endif
35 #undef __bionic_asm_custom_entry
36 #undef __bionic_asm_custom_end
37 #define __bionic_asm_custom_entry(f) .ent f
38 #define __bionic_asm_custom_end(f) .end f
40 #include <machine/regdef.h>
42 #define _MIPS_ISA_MIPS1 1 /* R2000/R3000 */
43 #define _MIPS_ISA_MIPS2 2 /* R4000/R6000 */
44 #define _MIPS_ISA_MIPS3 3 /* R4000 */
45 #define _MIPS_ISA_MIPS4 4 /* TFP (R1x000) */
46 #define _MIPS_ISA_MIPS5 5
47 #define _MIPS_ISA_MIPS32 6
48 #define _MIPS_ISA_MIPS64 7
50 #if !defined(ABICALLS) && !defined(_NO_ABICALLS)
51 #define ABICALLS .abicalls
52 #endif
54 #if defined(ABICALLS) && !defined(_KERNEL)
55 ABICALLS
56 #endif
58 #if !defined(__MIPSEL__) && !defined(__MIPSEB__)
59 #error "__MIPSEL__ or __MIPSEB__ must be defined"
60 #endif
61 /*
62 * Define how to access unaligned data word
63 */
64 #if defined(__MIPSEL__)
65 #define LWLO lwl
66 #define LWHI lwr
67 #define SWLO swl
68 #define SWHI swr
69 #define LDLO ldl
70 #define LDHI ldr
71 #define SDLO sdl
72 #define SDHI sdr
73 #endif
74 #if defined(__MIPSEB__)
75 #define LWLO lwr
76 #define LWHI lwl
77 #define SWLO swr
78 #define SWHI swl
79 #define LDLO ldr
80 #define LDHI ldl
81 #define SDLO sdr
82 #define SDHI sdl
83 #endif
85 /*
86 * Define programming environment for ABI.
87 */
88 #if defined(ABICALLS) && !defined(_KERNEL) && !defined(_STANDALONE)
90 #if (_MIPS_SIM == _ABIO32) || (_MIPS_SIM == _ABI32)
91 #define NARGSAVE 4
93 #define SETUP_GP \
94 .set noreorder; \
95 .cpload t9; \
96 .set reorder;
98 #define SAVE_GP(x) \
99 .cprestore x
101 #define SETUP_GP64(gpoff, name)
102 #define RESTORE_GP64
103 #endif
105 #if (_MIPS_SIM == _ABI64) || (_MIPS_SIM == _ABIN32)
106 #define NARGSAVE 0
108 #define SETUP_GP
109 #define SAVE_GP(x)
110 #define SETUP_GP64(gpoff, name) \
111 .cpsetup t9, gpoff, name
112 #define RESTORE_GP64 \
113 .cpreturn
114 #endif
116 #define MKFSIZ(narg,locals) (((narg+locals)*REGSZ+31)&(~31))
118 #else /* defined(ABICALLS) && !defined(_KERNEL) */
120 #define NARGSAVE 4
121 #define SETUP_GP
122 #define SAVE_GP(x)
124 #define ALIGNSZ 16 /* Stack layout alignment */
125 #define FRAMESZ(sz) (((sz) + (ALIGNSZ-1)) & ~(ALIGNSZ-1))
127 #endif
129 /*
130 * Basic register operations based on selected ISA
131 */
132 #if (_MIPS_ISA == _MIPS_ISA_MIPS1 || _MIPS_ISA == _MIPS_ISA_MIPS2 || _MIPS_ISA == _MIPS_ISA_MIPS32)
133 #define REGSZ 4 /* 32 bit mode register size */
134 #define LOGREGSZ 2 /* log rsize */
135 #define REG_S sw
136 #define REG_L lw
137 #define CF_SZ 24 /* Call frame size */
138 #define CF_ARGSZ 16 /* Call frame arg size */
139 #define CF_RA_OFFS 20 /* Call ra save offset */
140 #endif
142 #if (_MIPS_ISA == _MIPS_ISA_MIPS3 || _MIPS_ISA == _MIPS_ISA_MIPS4 || _MIPS_ISA == _MIPS_ISA_MIPS64)
143 #define REGSZ 8 /* 64 bit mode register size */
144 #define LOGREGSZ 3 /* log rsize */
145 #define REG_S sd
146 #define REG_L ld
147 #define CF_SZ 48 /* Call frame size (multiple of ALIGNSZ) */
148 #define CF_ARGSZ 32 /* Call frame arg size */
149 #define CF_RA_OFFS 40 /* Call ra save offset */
150 #endif
152 #define REGSZ_FP 8 /* 64 bit FP register size */
154 #ifndef __LP64__
155 #define PTR_L lw
156 #define PTR_S sw
157 #define PTR_SUB sub
158 #define PTR_ADD add
159 #define PTR_SUBU subu
160 #define PTR_ADDU addu
161 #define LI li
162 #define LA la
163 #define PTR_SLL sll
164 #define PTR_SRL srl
165 #define PTR_VAL .word
166 #else
167 #define PTR_L ld
168 #define PTR_S sd
169 #define PTR_ADD dadd
170 #define PTR_SUB dsub
171 #define PTR_SUBU dsubu
172 #define PTR_ADDU daddu
173 #define LI dli
174 #define LA dla
175 #define PTR_SLL dsll
176 #define PTR_SRL dsrl
177 #define PTR_VAL .dword
178 #endif
180 /*
181 * LEAF(x, fsize)
182 *
183 * Declare a leaf routine.
184 */
185 #define LEAF(x, fsize) \
186 .align 3; \
187 .globl x; \
188 .ent x, 0; \
189 x: ; \
190 .cfi_startproc; \
191 .frame sp, fsize, ra; \
192 SETUP_GP \
194 /*
195 * NON_LEAF(x)
196 *
197 * Declare a non-leaf routine (a routine that makes other C calls).
198 */
199 #define NON_LEAF(x, fsize, retpc) \
200 .align 3; \
201 .globl x; \
202 .ent x, 0; \
203 x: ; \
204 .cfi_startproc; \
205 .frame sp, fsize, retpc; \
206 SETUP_GP \
208 #endif /* !_MIPS_ASM_H */