aboutsummaryrefslogtreecommitdiff
path: root/backends/gp32/gp_asmlib.s
blob: f00f39a573991133328f0b82f653e179cc710abd (plain)
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
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
	.ALIGN
@	.ARM

	.GLOBAL		cpu_speed
	.GLOBAL		mmu_change

cpu_speed:
	stmdb	r13!, {r0-r12,lr}
	stmdb	sp!, {r0, r1, r2}
	mov		r0, sp
	swi		#0x0d
	add		sp, sp, #12
	ldmia	r13!, {r0-r12,lr}
	bx		lr
	nop

mmu_change:
        stmdb   r13!, {r0-r12,lr}
        swi             #0x02
        ldmia   r13!, {r0-r12,lr}
        bx              lr
        nop

@ ******** ASMFastSolidBlit(unsigned char *src4, unsigned char *dst4, int nbx, int nby, int height2, int trans, int coul) ********

	.ALIGN
	.GLOBAL ASMFastSolidBlit
	.TYPE   ASMFastSolidBlit, function
	.CODE 32

@r0 = src4
@r1 = dst4
@r2 = nbx
@r3 = nby

@r4 = height2
@r5 = trans
@r6 = coul
@r7 = tmp
@r8 = tmpnby
@r9 = tmp2

_bx7:
	ldrb		r8,[r0,+r3]		@lecture 1er pixel
	subs		r7,r3,#1
	bmi		_sauty2

_sauty2:					@ecriture r8
	TEQ		r8,r5
	STRNEB	r8,[r1,+r7]
	SUB		r0,r0,r4
	SUB		r1,r1,#240
	SUBS		r2,r2,#1
	BPL		_bx7

        ldmfd		r13!,{r4-r8}
	add		sp,sp,#8
	bx		lr

ASMFastSolidBlit:

	sub		sp,sp,#12
        stmfd		r13!,{r4-r9}
        ldr		r4,[r13,#36]
        ldr		r5,[r13,#40]
        ldr		r6,[r13,#44]

_bx8:
	ldrb		r9,[r0,+r3]		@lecture 1er pixel
	subs		r8,r3,#1
	bmi		_sauty2

_by8:
	LDRB		r7,[r0,+r8]
	TEQ		r9,r5
	STRNEB	r6,[r1,+r8]
	SUBS		r8,r8,#1
	BMI		_sauty3b
	LDRB		r9,[r0,+r8]
	TEQ		r7,r5
	STRNEB	r6,[r1,+r8]
	SUBS		r8,r8,#1
	BMI		_sauty3
	LDRB		r7,[r0,+r8]
	TEQ		r9,r5
	STRNEB	r6,[r1,+r8]
	SUBS		r8,r8,#1
	BMI		_sauty3b
	LDRB		r9,[r0,+r8]
	TEQ		r7,r5
	STRNEB	r6,[r1,+r8]
	SUBS		r8,r8,#1
	BMI		_sauty3
	LDRB		r7,[r0,+r8]
	TEQ		r9,r5
	STRNEB	r6,[r1,+r8]
	SUBS		r8,r8,#1
	BMI		_sauty3b
	LDRB		r9,[r0,+r8]
	TEQ		r7,r5
	STRNEB	r6,[r1,+r8]
	SUBS		r8,r8,#1
	BMI		_sauty3
	LDRB		r7,[r0,+r8]
	TEQ		r9,r5
	STRNEB	r6,[r1,+r8]
	SUBS		r8,r8,#1
	BMI		_sauty3b
	LDRB		r9,[r0,+r8]
	TEQ		r7,r5
	STRNEB	r6,[r1,+r8]
	SUBS		r8,r8,#1
	BMI		_sauty3
	LDRB		r7,[r0,+r8]
	TEQ		r9,r5
	STRNEB	r6,[r1,+r8]
	SUBS		r8,r8,#1
	BMI		_sauty3b
	LDRB		r9,[r0,+r8]
	TEQ		r7,r5
	STRNEB	r6,[r1,+r8]
	SUBS		r8,r8,#1
	BMI		_sauty3
	LDRB		r7,[r0,+r8]
	TEQ		r9,r5
	STRNEB	r6,[r1,+r8]
	SUBS		r8,r8,#1
	BMI		_sauty3b
	LDRB		r9,[r0,+r8]
	TEQ		r7,r5
	STRNEB	r6,[r1,+r8]
	SUBS		r8,r8,#1
	BMI		_sauty3
	LDRB		r7,[r0,+r8]
	TEQ		r9,r5
	STRNEB	r6,[r1,+r8]
	SUBS		r8,r8,#1
	BMI		_sauty3b
	LDRB		r9,[r0,+r8]
	TEQ		r7,r5
	STRNEB	r6,[r1,+r8]
	SUBS		r8,r8,#1
	BMI		_sauty3
	LDRB		r7,[r0,+r8]
	TEQ		r9,r5
	STRNEB	r6,[r1,+r8]
	SUBS		r8,r8,#1
	BMI		_sauty3b
	LDRB		r9,[r0,+r8]
	TEQ		r7,r5
	STRNEB	r6,[r1,+r8]
	SUBS		r8,r8,#1

	BPL		_by8

_sauty3:					@ecriture pour r9
	TEQ		r9,r5
	STRNEB	r6,[r1,+r8]
	SUB		r0,r0,r4
	SUB		r1,r1,#240
	SUBS		r2,r2,#1
	BPL		_bx8

        ldmfd		r13!,{r4-r9}
	add		sp,sp,#12
	bx		lr

_sauty3b:					@ecriture pour r7
	TEQ		r7,r5
	STRNEB	r6,[r1,+r8]
	SUB		r0,r0,r4
	SUB		r1,r1,#240
	SUBS		r2,r2,#1
	BPL		_bx8

        ldmfd		r13!,{r4-r9}
	add		sp,sp,#12
	bx		lr


@ ******** ASMSaveBitmap(unsigned char *src4, unsigned char *dst, int nbx, int nby, int height2) ********

	.ALIGN
	.GLOBAL ASMSaveBitmap
	.TYPE   ASMSaveBitmap, function
	.CODE 32

@r0 = src4
@r1 = dst + 1
@r2 = nbx
@r3 = nby

@r7 = height2
@r8 = tmp
@r9 = tmpnby
@r10 = dst4

ASMSaveBitmap:

	sub		sp,sp,#4
        stmfd		r13!,{r7-r10}
        LDR		r7,[r13,#20]

_bx6:
	MLA		r10,r2,r7,r1
	MOV		r9,r3

_by6:
	LDRB		r8,[r0,+r9]
	SUBS		r9,r9,#1
	STRB		r8,[r10,+r9]
	BMI		_fincol6
	LDRB		r8,[r0,+r9]
	SUBS		r9,r9,#1
	STRB		r8,[r10,+r9]
	BMI		_fincol6
	LDRB		r8,[r0,+r9]
	SUBS		r9,r9,#1
	STRB		r8,[r10,+r9]
	BMI		_fincol6
	LDRB		r8,[r0,+r9]
	SUBS		r9,r9,#1
	STRB		r8,[r10,+r9]
	BMI		_fincol6
	LDRB		r8,[r0,+r9]
	SUBS		r9,r9,#1
	STRB		r8,[r10,+r9]
	BMI		_fincol6
	LDRB		r8,[r0,+r9]
	SUBS		r9,r9,#1
	STRB		r8,[r10,+r9]
	BMI		_fincol6
	LDRB		r8,[r0,+r9]
	SUBS		r9,r9,#1
	STRB		r8,[r10,+r9]
	BMI		_fincol6
	LDRB		r8,[r0,+r9]
	SUBS		r9,r9,#1
	STRB		r8,[r10,+r9]
	BMI		_fincol6
	LDRB		r8,[r0,+r9]
	SUBS		r9,r9,#1
	STRB		r8,[r10,+r9]
	BMI		_fincol6
	LDRB		r8,[r0,+r9]
	SUBS		r9,r9,#1
	STRB		r8,[r10,+r9]
	BMI		_fincol6
	LDRB		r8,[r0,+r9]
	SUBS		r9,r9,#1
	STRB		r8,[r10,+r9]
	BMI		_fincol6
	LDRB		r8,[r0,+r9]
	SUBS		r9,r9,#1
	STRB		r8,[r10,+r9]
	BMI		_fincol6
	LDRB		r8,[r0,+r9]
	SUBS		r9,r9,#1
	STRB		r8,[r10,+r9]
	BMI		_fincol6
	LDRB		r8,[r0,+r9]
	SUBS		r9,r9,#1
	STRB		r8,[r10,+r9]
	BMI		_fincol6
	LDRB		r8,[r0,+r9]
	SUBS		r9,r9,#1
	STRB		r8,[r10,+r9]
	BMI		_fincol6
	LDRB		r8,[r0,+r9]
	SUBS		r9,r9,#1
	STRB		r8,[r10,+r9]

	BPL		_by6

_fincol6:
	SUB		r0,r0,#240
	SUBS		r2,r2,#1
	BPL		_bx6

        ldmfd		r13!,{r7-r10}
	add		sp,sp,#4
	bx		lr


	.ALIGN
	.GLOBAL gp_clearFramebuffer
	.TYPE   gp_clearFramebuffer, function
	.CODE 32
gp_clearFramebuffer:
        @ r0 = framebuffer
        @ r1 = color
        orr r1,r1,r1,lsl #16   @hi halfword = lo halfword  
        mov r2,#38400
clear:  str  r1,[r0],#4
        subs r2,r2,#1
        bne clear
        bx lr


@ ******** ASMFastClear(unsigned char *dst4, int nbx, int nby) ********

	.ALIGN
	.GLOBAL ASMFastClear
	.TYPE   ASMFastClear, function
	.CODE 32

@r0 = dst4
@r1 = nbx
@r2 = nby

@r3 = #0
@r4 = tmpnby

@optimis?pour h=20

ASMFastClear:

	str		r4,[sp,#-4]!
	MOV		r3,#0

_bx9:
	MOV		r4,r2

_by9:
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1
	BMI		_sauty4
	STRB		r3,[r0,+r4]
	SUBS		r4,r4,#1

	BPL		_by9

_sauty4:
	SUB		r0,r0,#240
	SUBS		r1,r1,#1
	BPL		_bx9

	ldr		r4,[sp],#4
	bx		lr