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1 jermar 1
#
319 jermar 2
# Copyright (C) 2003-2004 Jakub Jermar
1 jermar 3
# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# - Redistributions of source code must retain the above copyright
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#   notice, this list of conditions and the following disclaimer.
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# - Redistributions in binary form must reproduce the above copyright
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#   notice, this list of conditions and the following disclaimer in the
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#   documentation and/or other materials provided with the distribution.
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# - The name of the author may not be used to endorse or promote products
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#   derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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326 palkovsky 29
#include <arch/asm/regname.h>
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1 jermar 31
.text
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33
.macro cp0_read reg
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	mfc0 $2,\reg
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	j $31
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	nop
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.endm
38
 
39
.macro cp0_write reg
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	mtc0 $4,\reg
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	j $31
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	nop
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.endm
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45
.set noat
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.set noreorder
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.set nomacro
48
 
49
.global cp0_index_read
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.global cp0_index_write
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.global cp0_random_read
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.global cp0_entry_lo0_read
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.global cp0_entry_lo0_write
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.global cp0_entry_lo1_read
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.global cp0_entry_lo1_write
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.global cp0_context_read
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.global cp0_context_write
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.global cp0_pagemask_read
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.global cp0_pagemask_write
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.global cp0_wired_read
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.global cp0_wired_write
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.global cp0_badvaddr_read
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.global cp0_count_read
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.global cp0_count_write
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.global cp0_entry_hi_read
66
.global cp0_entry_hi_write
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.global cp0_compare_read
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.global cp0_compare_write
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.global cp0_status_read
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.global cp0_status_write
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.global cp0_cause_read
124 decky 72
.global cp0_cause_write
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.global cp0_epc_read
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.global cp0_epc_write
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.global cp0_prid_read
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77
cp0_index_read:		cp0_read $0
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cp0_index_write:	cp0_write $0
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80
cp0_random_read:	cp0_read $1
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82
cp0_entry_lo0_read:	cp0_read $2
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cp0_entry_lo0_write:	cp0_write $2
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85
cp0_entry_lo1_read:	cp0_read $3
86
cp0_entry_lo1_write:	cp0_write $3
87
 
88
cp0_context_read:	cp0_read $4
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cp0_context_write:	cp0_write $4
90
 
91
cp0_pagemask_read:	cp0_read $5
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cp0_pagemask_write:	cp0_write $5
93
 
94
cp0_wired_read:		cp0_read $6
95
cp0_wired_write:	cp0_write $6
96
 
97
cp0_badvaddr_read:	cp0_read $8
98
 
99
cp0_count_read:		cp0_read $9
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cp0_count_write:	cp0_write $9
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102
cp0_entry_hi_read:	cp0_read $10
103
cp0_entry_hi_write:	cp0_write $10
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105
cp0_compare_read:	cp0_read $11
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cp0_compare_write:	cp0_write $11
107
 
108
cp0_status_read:	cp0_read $12
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cp0_status_write:	cp0_write $12
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111
cp0_cause_read:		cp0_read $13
124 decky 112
cp0_cause_write:	cp0_write $13
1 jermar 113
 
114
cp0_epc_read:		cp0_read $14
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cp0_epc_write:		cp0_write $14
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117
cp0_prid_read:		cp0_read $15
118
 
119
 
120
.global cpu_halt
121
cpu_halt:
122
	j cpu_halt
123
	nop
124
 
125
 
59 jermar 126
.global memsetb
127
memsetb:
128
	j _memsetb
129
	nop
130
 
205 jermar 131
.global memcpy
132
memcpy:
133
	j _memcpy
105 jermar 134
	nop
135
 
326 palkovsky 136
.macro fpu_gp_save reg ctx
137
	mfc1 $t0,$\reg
138
	sw $t0, \reg*4(\ctx)
139
.endm
140
 
141
.macro fpu_gp_restore reg ctx
142
	lw $t0, \reg*4(\ctx)
143
	mtc1 $t0,$\reg
144
.endm
145
 
146
.macro fpu_ct_save reg ctx
147
	cfc1 $t0,$1
148
	sw $t0, (\reg+32)*4(\ctx)
149
.endm	
150
 
151
.macro fpu_ct_restore reg ctx
152
	lw $t0, (\reg+32)*4(\ctx)
153
	ctc1 $t0,$\reg
154
.endm
155
 
156
 
157
.global fpu_context_save
158
fpu_context_save:
159
#ifdef HAVE_FPU
160
	fpu_gp_save 0,$a0
161
	fpu_gp_save 1,$a0
162
	fpu_gp_save 2,$a0
163
	fpu_gp_save 3,$a0
164
	fpu_gp_save 4,$a0
165
	fpu_gp_save 5,$a0
166
	fpu_gp_save 6,$a0
167
	fpu_gp_save 7,$a0
168
	fpu_gp_save 8,$a0
169
	fpu_gp_save 9,$a0
170
	fpu_gp_save 10,$a0
171
	fpu_gp_save 11,$a0
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	fpu_gp_save 12,$a0
173
	fpu_gp_save 13,$a0
174
	fpu_gp_save 14,$a0
175
	fpu_gp_save 15,$a0
176
	fpu_gp_save 16,$a0
177
	fpu_gp_save 17,$a0
178
	fpu_gp_save 18,$a0
179
	fpu_gp_save 19,$a0
180
	fpu_gp_save 20,$a0
181
	fpu_gp_save 21,$a0
182
	fpu_gp_save 22,$a0
183
	fpu_gp_save 23,$a0
184
	fpu_gp_save 24,$a0
185
	fpu_gp_save 25,$a0
186
	fpu_gp_save 26,$a0
187
	fpu_gp_save 27,$a0
188
	fpu_gp_save 28,$a0
189
	fpu_gp_save 29,$a0
190
	fpu_gp_save 30,$a0
191
	fpu_gp_save 31,$a0
192
 
193
	fpu_ct_save 1,$a0
194
	fpu_ct_save 2,$a0
195
	fpu_ct_save 3,$a0
196
	fpu_ct_save 4,$a0
197
	fpu_ct_save 5,$a0
198
	fpu_ct_save 6,$a0
199
	fpu_ct_save 7,$a0
200
	fpu_ct_save 8,$a0
201
	fpu_ct_save 9,$a0
202
	fpu_ct_save 10,$a0
203
	fpu_ct_save 11,$a0
204
	fpu_ct_save 12,$a0
205
	fpu_ct_save 13,$a0
206
	fpu_ct_save 14,$a0
207
	fpu_ct_save 15,$a0
208
	fpu_ct_save 16,$a0
209
	fpu_ct_save 17,$a0
210
	fpu_ct_save 18,$a0
211
	fpu_ct_save 19,$a0
212
	fpu_ct_save 20,$a0
213
	fpu_ct_save 21,$a0
214
	fpu_ct_save 22,$a0
215
	fpu_ct_save 23,$a0
216
	fpu_ct_save 24,$a0
217
	fpu_ct_save 25,$a0
218
	fpu_ct_save 26,$a0
219
	fpu_ct_save 27,$a0
220
	fpu_ct_save 28,$a0
221
	fpu_ct_save 29,$a0
222
	fpu_ct_save 30,$a0
223
	fpu_ct_save 31,$a0
224
#endif		
225
	j $ra
226
	nop
227
 
228
.global fpu_context_restore
229
fpu_context_restore:
230
#ifdef HAVE_FPU
231
	fpu_gp_restore 0,$a0
232
	fpu_gp_restore 1,$a0
233
	fpu_gp_restore 2,$a0
234
	fpu_gp_restore 3,$a0
235
	fpu_gp_restore 4,$a0
236
	fpu_gp_restore 5,$a0
237
	fpu_gp_restore 6,$a0
238
	fpu_gp_restore 7,$a0
239
	fpu_gp_restore 8,$a0
240
	fpu_gp_restore 9,$a0
241
	fpu_gp_restore 10,$a0
242
	fpu_gp_restore 11,$a0
243
	fpu_gp_restore 12,$a0
244
	fpu_gp_restore 13,$a0
245
	fpu_gp_restore 14,$a0
246
	fpu_gp_restore 15,$a0
247
	fpu_gp_restore 16,$a0
248
	fpu_gp_restore 17,$a0
249
	fpu_gp_restore 18,$a0
250
	fpu_gp_restore 19,$a0
251
	fpu_gp_restore 20,$a0
252
	fpu_gp_restore 21,$a0
253
	fpu_gp_restore 22,$a0
254
	fpu_gp_restore 23,$a0
255
	fpu_gp_restore 24,$a0
256
	fpu_gp_restore 25,$a0
257
	fpu_gp_restore 26,$a0
258
	fpu_gp_restore 27,$a0
259
	fpu_gp_restore 28,$a0
260
	fpu_gp_restore 29,$a0
261
	fpu_gp_restore 30,$a0
262
	fpu_gp_restore 31,$a0
263
 
264
	fpu_ct_restore 1,$a0
265
	fpu_ct_restore 2,$a0
266
	fpu_ct_restore 3,$a0
267
	fpu_ct_restore 4,$a0
268
	fpu_ct_restore 5,$a0
269
	fpu_ct_restore 6,$a0
270
	fpu_ct_restore 7,$a0
271
	fpu_ct_restore 8,$a0
272
	fpu_ct_restore 9,$a0
273
	fpu_ct_restore 10,$a0
274
	fpu_ct_restore 11,$a0
275
	fpu_ct_restore 12,$a0
276
	fpu_ct_restore 13,$a0
277
	fpu_ct_restore 14,$a0
278
	fpu_ct_restore 15,$a0
279
	fpu_ct_restore 16,$a0
280
	fpu_ct_restore 17,$a0
281
	fpu_ct_restore 18,$a0
282
	fpu_ct_restore 19,$a0
283
	fpu_ct_restore 20,$a0
284
	fpu_ct_restore 21,$a0
285
	fpu_ct_restore 22,$a0
286
	fpu_ct_restore 23,$a0
287
	fpu_ct_restore 24,$a0
288
	fpu_ct_restore 25,$a0
289
	fpu_ct_restore 26,$a0
290
	fpu_ct_restore 27,$a0
291
	fpu_ct_restore 28,$a0
292
	fpu_ct_restore 29,$a0
293
	fpu_ct_restore 30,$a0
294
	fpu_ct_restore 31,$a0
295
#endif	
296
	j $ra
297
	nop
298
 
1 jermar 299
# THIS IS USERSPACE CODE
300
.global utext
301
utext:
302
	j $31
303
	nop
304
utext_end:
305
 
306
.data
307
.global utext_size
308
utext_size:
309
	.long utext_end-utext
314 palkovsky 310
 
311