1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Some useful macros for LoongArch assembler code
*
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*
* Derived from MIPS:
* Copyright (C) 1995, 1996, 1997, 1999, 2001 by Ralf Baechle
* Copyright (C) 1999 by Silicon Graphics, Inc.
* Copyright (C) 2001 MIPS Technologies, Inc.
* Copyright (C) 2002 Maciej W. Rozycki
*/
#ifndef __ASM_ASM_H
#define __ASM_ASM_H
/* LoongArch pref instruction. */
#ifdef CONFIG_CPU_HAS_PREFETCH
#define PREF(hint, addr, offs) \
preld hint, addr, offs; \
#define PREFX(hint, addr, index) \
preldx hint, addr, index; \
#else /* !CONFIG_CPU_HAS_PREFETCH */
#define PREF(hint, addr, offs)
#define PREFX(hint, addr, index)
#endif /* !CONFIG_CPU_HAS_PREFETCH */
/*
* Stack alignment
*/
#define STACK_ALIGN ~(0xf)
/*
* Macros to handle different pointer/register sizes for 32/64-bit code
*/
/*
* Size of a register
*/
#ifndef __loongarch64
#define SZREG 4
#else
#define SZREG 8
#endif
/*
* Use the following macros in assemblercode to load/store registers,
* pointers etc.
*/
#if (SZREG == 4)
#define REG_L ld.w
#define REG_S st.w
#define REG_ADD add.w
#define REG_SUB sub.w
#else /* SZREG == 8 */
#define REG_L ld.d
#define REG_S st.d
#define REG_ADD add.d
#define REG_SUB sub.d
#endif
/*
* How to add/sub/load/store/shift C int variables.
*/
#if (__SIZEOF_INT__ == 4)
#define INT_ADD add.w
#define INT_ADDI addi.w
#define INT_SUB sub.w
#define INT_L ld.w
#define INT_S st.w
#define INT_SLLI slli.w
#define INT_SLLV sll.w
#define INT_SRLI srli.w
#define INT_SRLV srl.w
#define INT_SRAI srai.w
#define INT_SRAV sra.w
#endif
#if (__SIZEOF_INT__ == 8)
#define INT_ADD add.d
#define INT_ADDI addi.d
#define INT_SUB sub.d
#define INT_L ld.d
#define INT_S st.d
#define INT_SLLI slli.d
#define INT_SLLV sll.d
#define INT_SRLI srli.d
#define INT_SRLV srl.d
#define INT_SRAI srai.d
#define INT_SRAV sra.d
#endif
/*
* How to add/sub/load/store/shift C long variables.
*/
#if (__SIZEOF_LONG__ == 4)
#define LONG_ADD add.w
#define LONG_ADDI addi.w
#define LONG_ALSL alsl.w
#define LONG_BSTRINS bstrins.w
#define LONG_BSTRPICK bstrpick.w
#define LONG_SUB sub.w
#define LONG_L ld.w
#define LONG_LI li.w
#define LONG_LPTR ld.w
#define LONG_S st.w
#define LONG_SPTR st.w
#define LONG_SLLI slli.w
#define LONG_SLLV sll.w
#define LONG_SRLI srli.w
#define LONG_SRLV srl.w
#define LONG_SRAI srai.w
#define LONG_SRAV sra.w
#define LONG_ROTR rotr.w
#define LONG_ROTRI rotri.w
#ifdef __ASSEMBLER__
#define LONG .word
#endif
#define LONGSIZE 4
#define LONGMASK 3
#define LONGLOG 2
#endif
#if (__SIZEOF_LONG__ == 8)
#define LONG_ADD add.d
#define LONG_ADDI addi.d
#define LONG_ALSL alsl.d
#define LONG_BSTRINS bstrins.d
#define LONG_BSTRPICK bstrpick.d
#define LONG_SUB sub.d
#define LONG_L ld.d
#define LONG_LI li.d
#define LONG_LPTR ldptr.d
#define LONG_S st.d
#define LONG_SPTR stptr.d
#define LONG_SLLI slli.d
#define LONG_SLLV sll.d
#define LONG_SRLI srli.d
#define LONG_SRLV srl.d
#define LONG_SRAI srai.d
#define LONG_SRAV sra.d
#define LONG_ROTR rotr.d
#define LONG_ROTRI rotri.d
#ifdef __ASSEMBLER__
#define LONG .dword
#endif
#define LONGSIZE 8
#define LONGMASK 7
#define LONGLOG 3
#endif
/*
* How to add/sub/load/store/shift pointers.
*/
#if (__SIZEOF_POINTER__ == 4)
#define PTR_ADD add.w
#define PTR_ADDI addi.w
#define PTR_ALSL alsl.w
#define PTR_BSTRINS bstrins.w
#define PTR_BSTRPICK bstrpick.w
#define PTR_SUB sub.w
#define PTR_L ld.w
#define PTR_LI li.w
#define PTR_LPTR ld.w
#define PTR_S st.w
#define PTR_SPTR st.w
#define PTR_SLLI slli.w
#define PTR_SLLV sll.w
#define PTR_SRLI srli.w
#define PTR_SRLV srl.w
#define PTR_SRAI srai.w
#define PTR_SRAV sra.w
#define PTR_ROTR rotr.w
#define PTR_ROTRI rotri.w
#define PTR_SCALESHIFT 2
#ifdef __ASSEMBLER__
#define PTR .word
#endif
#define PTRSIZE 4
#define PTRLOG 2
#endif
#if (__SIZEOF_POINTER__ == 8)
#define PTR_ADD add.d
#define PTR_ADDI addi.d
#define PTR_ALSL alsl.d
#define PTR_BSTRINS bstrins.d
#define PTR_BSTRPICK bstrpick.d
#define PTR_SUB sub.d
#define PTR_L ld.d
#define PTR_LI li.d
#define PTR_LPTR ldptr.d
#define PTR_S st.d
#define PTR_SPTR stptr.d
#define PTR_SLLI slli.d
#define PTR_SLLV sll.d
#define PTR_SRLI srli.d
#define PTR_SRLV srl.d
#define PTR_SRAI srai.d
#define PTR_SRAV sra.d
#define PTR_ROTR rotr.d
#define PTR_ROTRI rotri.d
#define PTR_SCALESHIFT 3
#ifdef __ASSEMBLER__
#define PTR .dword
#endif
#define PTRSIZE 8
#define PTRLOG 3
#endif
/* Annotate a function as being unsuitable for kprobes. */
#ifdef CONFIG_KPROBES
#ifdef CONFIG_32BIT
#define _ASM_NOKPROBE(name) \
.pushsection "_kprobe_blacklist", "aw"; \
.long name; \
.popsection
#else
#define _ASM_NOKPROBE(name) \
.pushsection "_kprobe_blacklist", "aw"; \
.quad name; \
.popsection
#endif
#else
#define _ASM_NOKPROBE(name)
#endif
#endif /* __ASM_ASM_H */
|
