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cpu_support.S@ 363

Last change on this file since 363 was 363, checked in by ykominami, 5 years ago
add tags/jsp-1.4.4-full-UTF8
Property svn:executable set to ``*
File size: 57.9 KB

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1	/*
2	* TOPPERS/JSP Kernel
3	* Toyohashi Open Platform for Embedded Real-Time Systems/
4	* Just Standard Profile Kernel
5	*
6	* Copyright (C) 2000-2004 by Embedded and Real-Time Systems Laboratory
7	* Toyohashi Univ. of Technology, JAPAN
8	* Copyright (C) 2001-2004 by Industrial Technology Institute,
9	* Miyagi Prefectural Government, JAPAN
10	*
11	* ä¸è¨èä½æ¨©è
12	ã¯ï¼ä»¥ä¸ã® (1)ã(4) ã®æ¡ä»¶ãï¼Free Software Foundation
13	* ã«ãã£ã¦å
14	¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
15	* è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
16	* ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ãä½¿ç¨ã»è¤è£½ã»æ¹å¤ã»åé
17	å¸ï¼ä»¥ä¸ï¼
18	* å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
19	* (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
20	* æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
21	* ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
22	* (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
23	* ç¨ã§ããå½¢ã§åé
24	å¸ããå ´åã«ã¯ï¼åé
25	å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
26	* è
27	ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
28	* ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
29	* (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
30	* ç¨ã§ããªãå½¢ã§åé
31	å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
32	* ã¨ï¼
33	* (a) åé
34	å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
35	ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
36	* ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
37	* (b) åé
38	å¸ã®å½¢æ
39	ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
40	* å ±åãããã¨ï¼
41	* (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
42	* å®³ãããï¼ä¸è¨èä½æ¨©è
43	ããã³TOPPERSããã¸ã§ã¯ããå
44	è²¬ãããã¨ï¼
45	*
46	* æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
47	ã
48	* ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ã
49	* å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
50	* æ¥çã¾ãã¯éæ¥çã«çãããããªãæå®³ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
51	*
52	* @(#) $Id: cpu_support.S,v 1.2 2004/10/07 17:10:56 honda Exp $
53	*/
54
55	/*
56	* ããã»ããµä¾åã¢ã¸ã¥ã¼ã« ã¢ã»ã³ããªè¨èªé¨ï¼PowerPCç¨ï¼
57	*ãããããã«ã¼ãã«å
58	é¨ã§ä½¿ç¨ããå®ç¾©
59	*/
60
61	#define _MACRO_ONLY
62	#include "jsp_kernel.h"
63	#include "offset.h"
64
65	/*
66	* TCBæ§é ä½ã®ãªãã»ããã®ãã§ãã¯
67	*ããã15ãããã«åã¾ã£ã¦ããªãã¨ç¬¦å·æ¡å¼µãèµ·ããã
68	*ãããæå¾
69	ããåä½ã«ãªããªãã
70	*/
71	#define CHECK_OFFSET(offset) (((offset)&~0x8fff) != 0)
72	#if CHECK_OFFSET(TCB_pc) \|\| CHECK_OFFSET(TCB_sp) \
73	\|\| CHECK_OFFSET(TCB_enatex) \|\| CHECK_OFFSET(TCB_texptn) \
74	\|\| CHECK_OFFSET(TCB_tinib) \|\| CHECK_OFFSET(TINIB_task) \
75	\|\| CHECK_OFFSET(TINIB_exinf)
76	ããã§ã³ã³ãã¤ã«ã¨ã©ã¼
77	#endif
78
79
80	/*
81	*ãä¾å¤å¦çã®ååã§éé¿ããã¬ã¸ã¹ã¿æ°
82	*ãããæ±ç¨ã¬ã¸ã¹ã¿ï¼gpr0-1,3-12
83	*ãããç¹æ®ã¬ã¸ã¹ã¿ï¼LR,CTR,XER,SRR0,SRR1
84	*/
85	#define NUM_REG 17
86
87	/* ã¬ã¸ã¹ã¿ãå¾
88	é¿ããã®ã«å¿
89	è¦ãªãã¤ãæ° */
90	#define GPR0_12_SPRG_AREA_SIZE (NUM_REG*4 + 4)
91	/* +4ã¯ä¾å¤è¦å çªå·ãä¿åããã¹ãã¼ã¹ */
92	/* æ³¨æï¼4ãã¤ãå¢çã«ãªã£ã¦ãã */
93
94	#define GPR13_31_AREA_SIZE (194) / gpr13-31 */
95
96	/*
97	*ãæ³¨æ
98	*ãããMPC860ã¯æµ®åå°æ°ç¹ã¬ã¸ã¹ã¿ããªãããããã®é¨åã¯
99	*ããããã¹ãããã¦ããªã
100	*/
101	#ifdef SUPPORT_FLOATING_POINT_REG
102	/* ãã¼ãã¦ã§ã¢ã§æµ®åå°æ°ç¹ã¬ã¸ã¹ã¿ãå®è£
103	ããã¦ããå ´å */
104	#define FPR_AREA_SIZE (328+8) / fpr0-31,FPSCR */
105	#define FPR0_13_AREA_SIZE (148+8) / fpr0-14,FPSCR */
106	#define FPR14_31_AREA_SIZE (188) / fpr15-31 */
107
108	#else /* SUPPORT_FLOATING_POINT_REG */
109	/* ãã¼ãã¦ã§ã¢ã§æµ®åå°æ°ç¹ã¬ã¸ã¹ã¿ãå®è£
110	ããã¦ããªãå ´å */
111	#define FPR_AREA_SIZE 0 /* fpr0-31,FPSCR */
112	#define FPR0_13_AREA_SIZE 0 /* fpr0-14,FPSCR */
113	#define FPR14_31_AREA_SIZE 0 /* fpr15-31 */
114	#endif /* SUPPORT_FLOATING_POINT_REG */
115
116	/*
117	* å²è¾¼ã¿ãCPUä¾å¤åä»æã®ã¬ã¸ã¹ã¿ã®å¾
118	é¿
119	*ããæ³¨æ
120	*ãããæµ®åå°æ°ç¹ã¬ã¸ã¹ã¿ã®å¾
121	é¿ã¯ãã£ã¹ãããå¼ã³åºããããã¨ã
122	*ãããï¼ã¿ã¹ã¯ã¹ã¤ããã®å¯è½æ§ãããã¨ãï¼ã®ã¿è¡ãã
123	*ãããå²è¾¼ã¿ãã³ãã©ãCPUä¾å¤ãã³ãã©å
124	ã§æµ®åå°æ°ç¹ã¬ã¸ã¹ã¿ã
125	*ãããä½¿ç¨ããå ´åã¯ãåãã³ãã©å
126	ã§æµ®åå°æ°ç¹ã¬ã¸ã¹ã¿ã®å¾
127	é¿ï¼
128	*ãããå¾©å
129	ãè¡ããã¨ã
130	*ããã
131	*ãããr4ã®SRR1ã¯CPUä¾å¤çºçæã®CPUããã¯ç¶æ
132	å¤å¥ã«ãä½¿ç¨ããã
133	*ããã
134	*/
135	#define SAVE_GPR0_12_SPRG \
136	subi sp, sp, GPR0_12_SPRG_AREA_SIZE; \
137	stw r0, 0*4(sp); \
138	stw r3, 1*4(sp); \
139	stw r4, 2*4(sp); \
140	stw r5, 3*4(sp); \
141	stw r6, 4*4(sp); \
142	stw r7, 5*4(sp); \
143	stw r8, 6*4(sp); \
144	stw r9, 7*4(sp); \
145	stw r10, 8*4(sp); \
146	stw r11, 9*4(sp); \
147	stw r12,10*4(sp); \
148	mfspr r3, SRR0; \
149	stw r3, 11*4(sp); \
150	mfspr r4, SRR1; \
151	stw r4, 12*4(sp); \
152	mfspr r5, LR; \
153	stw r5, 13*4(sp); \
154	mfspr r6, CTR; \
155	stw r6, 14*4(sp); \
156	mfcr r7; /* CR */ \
157	stw r7, 15*4(sp); \
158	mfspr r8, XER; \
159	stw r8, 16*4(sp)
160
161
162	/*
163	* å²è¾¼ã¿ãCPUä¾å¤åä»æã®ã¬ã¸ã¹ã¿ã®å¾©å
164
165	* ããï¼gpr0-1,3-12, ç¹æ®ã¬ã¸ã¹ã¿ã®å¾©å
166	ï¼
167	*
168	* ãããã£ã¹ãããå¼ã³åºãããªãå ´å
169	*/
170	#define LOAD_R0_12_SPRG \
171	/* ç¹æ®ã¬ã¸ã¹ã¿ã®å¾©å
172	*/ \
173	lwz r3, 11*4(sp); \
174	mtspr SRR0, r3; \
175	lwz r4, 12*4(sp); \
176	mtspr SRR1, r4; \
177	lwz r5, 13*4(sp); \
178	mtspr LR, r5; \
179	lwz r6, 14*4(sp); \
180	mtspr CTR, r6; \
181	lwz r7, 15*4(sp); \
182	mtcr r7; /* CR */ \
183	lwz r8, 16*4(sp); \
184	mtspr XER, r8; \
185	/* æ±ç¨ã¬ã¸ã¹ã¿gpr0-1,3-12ã®å¾©å
186	*/ \
187	lwz r0, 0*4(sp); \
188	lwz r3, 1*4(sp); \
189	lwz r4, 2*4(sp); \
190	lwz r5, 3*4(sp); \
191	lwz r6, 4*4(sp); \
192	lwz r7, 5*4(sp); \
193	lwz r8, 6*4(sp); \
194	lwz r9, 7*4(sp); \
195	lwz r10, 8*4(sp); \
196	lwz r11, 9*4(sp); \
197	lwz r12, 10*4(sp)
198	/* ãã¯ãå®ç¾©ããã¾ã§ */
199
200
201	/*
202	* CPUä¾å¤ã®å
203	¥å£å¦çã®å
204	ãåä¾å¤ãã¯ã¿ã«é
205	ç½®ããååé¨å
206	*
207	* ããã¯ãå¼æ°
208	* ããexc_noï¼ä¾å¤çªå·
209	* ã
210	* ãã¬ã¸ã¹ã¿å²ãå½ã¦
211	* ããSPRG2ï¼exc_tableï¼CPUä¾å¤æ¬ä¼¼ãã¯ã¿ãã¼ãã«ã®å
212	é ã¢ãã¬ã¹ï¼
213	* ããCTRï¼Cè¨èªã«ã¼ãã³ã®å
214	é ã¢ãã¬ã¹
215	* ããr3ï¼CPUä¾å¤ãã³ãã©ã®å¼æ°
216	* ããr4ï¼SRR1ã®ã³ãã¼
217	*/
218	#define MAKE_EXCEPTION_ENTRY(exe_no) \
219	SAVE_GPR0_12_SPRG; /* ã¹ã¯ã©ããã¬ã¸ã¹ã¿ã®å¾
220	é¿ */ \
221	/* ï¼r4ã«SRR1ãã³ãã¼ãããï¼ */ \
222	mr r3, sp; /* CPUä¾å¤ãã³ãã©ã®å¼æ°è¨å® */ \
223	/* Cè¨èªã«ã¼ãã³ã®å
224	é ã¢ãã¬ã¹è¨å® */ \
225	mfspr r5, SPRG2; /* r5âSPRG2ï¼exc_table */ \
226	/* æ¬ä¼¼ãã¯ã¿ãã¼ãã«èªã¿åºã */ \
227	lwz r6, (exe_no<<2)(r5); \
228	li r7, exe_no; /* ä¾å¤è¦å çªå·ã®ä¿å */ \
229	stw r7, NUM_REG4(sp) / (cpu_experr()ã§ä½¿ç¨) */
230
231	/*
232	* CPUä¾å¤ã®å
233	¥å£å¦çã®å
234	ãåä¾å¤ãã¯ã¿ã«é
235	ç½®ãããªã
236	* ååé¨åã¸ã®åå²
237	*
238	* ä¾å¤ãã¯ã¿ã®é
239	ç½®ã«ãã£ã¦ã¯bå½ä»¤ã«ããåå²ï¼åå¾0x07ff,ffffï¼ã§
240	* å±ããªãå ´åãããããã®å ´åã¯çµ¶å¯¾çªå°ãæå®ãã¦åå²ããã
241	*/
242	#ifdef ABSOLUTE_JUMP_EXC_ENTRY
243	#define JUMP_EXC_ENTRY(label) \
244	LI32(r8, label); \
245	mtctr r8; \
246	bctr
247
248	#else /* ABSOLUTE_JUMP_EXE_ENTRY */
249	#define JUMP_EXC_ENTRY(label) b label
250	#endif /* ABSOLUTE_JUMP_EXE_ENTRY */
251
252	/*
253	* ä¾å¤ãã¯ã¿ã®å®ç¾©
254	*/
255
256	#ifndef IBM_PPC_EMB_ENV
257	/*
258	* ãªãªã¸ãã«ã®PowerPCã¢ã¼ããã¯ãã£ã®å ´å
259	* ããã¢ããã¼ã©MPCã·ãªã¼ãºãIPM PowerPC6xx/7xxã·ãªã¼ãºã¯
260	* ãããã¡ãã«è©²å½ããã
261	*/
262
263	/*
264	* ä¾å¤ãã¯ã¿ãã¼ãã«ã®å
265	é ã¢ãã¬ã¹
266	* ãããã·ã³ã¹ãã¼ã¿ã¹ã¬ã¸ã¹ã¿MSRã®IPãããã
267	* ãããã0ã®ã¨ãï¼0x0000,0000çªå°
268	* ãããã1ã®ã¨ãï¼0xfff0,0000çªå°
269	* ãããããã®ãªãã»ããã«ãªã
270	*/
271	#define EXCEPTION_VECTOR_BASE 0x100
272
273	/*
274	* ã·ã¹ãã ãªã»ããä¾å¤
275	*/
276	.section ".exception_vector","rxai"
277	.align 2
278	.org 0x100 - EXCEPTION_VECTOR_BASE
279
280	System_reset_exception:
281	JUMP_EXC_ENTRY(start) /* ã¹ã¿ã¼ãã¢ããã«ã¼ãã³ */
282
283	/*
284	* ãã·ã³ã»ãã§ãã¯ä¾å¤
285	*/
286	.org 0x200 - EXCEPTION_VECTOR_BASE
287
288	Machine_check_exception:
289	MAKE_EXCEPTION_ENTRY(EXC_NO_MACHINE_CHECK)
290	JUMP_EXC_ENTRY(Exception_Entry)
291
292	/*
293	* DSIä¾å¤
294	* ããã¼ã¿ã»ã¡ã¢ãªã»ã¢ã¯ã»ã¹
295	* ããã¼ã¿TLBã¨ã©ã¼ï¼ãã¹
296	*/
297	.org 0x300 - EXCEPTION_VECTOR_BASE
298
299	DSI_exception:
300	MAKE_EXCEPTION_ENTRY(EXC_NO_DSI)
301	JUMP_EXC_ENTRY(Exception_Entry)
302
303	/*
304	* ISIä¾å¤
305	* ãå½ä»¤ãã§ãã
306	* ãå½ä»¤TLBã¨ã©ã¼ï¼ãã¹
307	*/
308	.org 0x400 - EXCEPTION_VECTOR_BASE
309
310	ISI_exception:
311	MAKE_EXCEPTION_ENTRY(EXC_NO_ISI)
312	JUMP_EXC_ENTRY(Exception_Entry)
313
314
315	/*
316	* å¤é¨å²è¾¼ã¿
317	* ããã¹ã¦ã®å¤é¨å²ãè¾¼ã¿ã§åãçªå°ã«åå²ãã
318	*/
319	.org 0x500 - EXCEPTION_VECTOR_BASE
320
321	External_interrupt:
322	SAVE_GPR0_12_SPRG /* ã¬ã¸ã¹ã¿ã®å¾
323	é¿ */
324	/*
325	* æ¬å½ã¯ããã§ç¶ãã®å¦çãè¡ããããã0x100ãã¤ãï¼64å½ä»¤ï¼å¾ãã«
326	* ã¢ã©ã¤ã¡ã³ãä¾å¤ã®å¦çãå
327	¥ããããç¶ãã¯External_interrupt_1:ã§è¡
328	* ãã
329	*/
330	JUMP_EXC_ENTRY(External_interrupt_1)
331
332	/*
333	* ã¢ã©ã¤ã¡ã³ãä¾å¤
334	*/
335	.org 0x600 - EXCEPTION_VECTOR_BASE
336
337	Alignment_exception:
338	MAKE_EXCEPTION_ENTRY(EXC_NO_ALIGNMENT)
339	JUMP_EXC_ENTRY(Exception_Entry)
340
341	/*
342	* ããã°ã©ã ä¾å¤
343	* ããFloating point enabled
344	* ããIllegal instruction
345	* ããPrivileged instruction
346	* ããTrap instruction
347	*/
348	.org 0x700 - EXCEPTION_VECTOR_BASE
349
350	Program_exception:
351	MAKE_EXCEPTION_ENTRY(EXC_NO_PROGRAM)
352	JUMP_EXC_ENTRY(Exception_Entry)
353
354	/*
355	* æµ®åå°æ°ç¹ä½¿ç¨ä¸å¯
356	*/
357	.org 0x800 - EXCEPTION_VECTOR_BASE
358
359	Floating_point_unavailable:
360	MAKE_EXCEPTION_ENTRY(EXC_NO_FLOATING_POINT_UNAVAILABLE)
361	JUMP_EXC_ENTRY(Exception_Entry)
362
363	/*
364	* ãã¯ãªã¡ã³ã¿ä¾å¤
365	*/
366	.org 0x900 - EXCEPTION_VECTOR_BASE
367
368	Decrementer_exception:
369	MAKE_EXCEPTION_ENTRY(EXC_NO_DECREMENTER)
370	JUMP_EXC_ENTRY(Exception_Entry)
371
372	/*
373	* ã¤ã³ããªã¡ã³ãã¼ã·ã§ã³åºæã®ä¾å¤0x00a00
374	*/
375	#ifdef IMPLEMENT_EXCEPTION_00A00
376	.org 0xa00 - EXCEPTION_VECTOR_BASE
377
378	Implementation_exception_00a00:
379	MAKE_EXCEPTION_ENTRY(EXC_NO_IMPLEMENT_EXCEPTION_00A00)
380	JUMP_EXC_ENTRY(Exception_Entry)
381
382	#endif /* IMPLEMENT_EXCEPTION_00A00 */
383
384
385	/*
386	* ã·ã¹ãã ã³ã¼ã«
387	*/
388	.org 0xc00 - EXCEPTION_VECTOR_BASE
389
390	System_call:
391	MAKE_EXCEPTION_ENTRY(EXC_NO_SYSTEM_CALL)
392	JUMP_EXC_ENTRY(Exception_Entry)
393
394	/*
395	* ãã¬ã¼ã¹ï¼ãªãã·ã§ã³ï¼
396	*/
397	.org 0xd00 - EXCEPTION_VECTOR_BASE
398
399	Trace_exception:
400	MAKE_EXCEPTION_ENTRY(EXC_NO_TRACE)
401	JUMP_EXC_ENTRY(Exception_Entry)
402
403
404	/*
405	* æµ®åå°æ°ç¹è£å©
406	*/
407	.org 0xe00 - EXCEPTION_VECTOR_BASE
408
409	Floating_point_assist:
410	MAKE_EXCEPTION_ENTRY(EXC_NO_FLOATING_POINT_ASSIST)
411	JUMP_EXC_ENTRY(Exception_Entry)
412
413	/*
414	* ã¤ã³ããªã¡ã³ãã¼ã·ã§ã³å°ç¨ã®å¦ç 0x01000-0x2ffff
415	* ã¤ã³ããªã¡ã³ãã¼ã·ã§ã³åºæã®ä¾å¤ãã¯ã¿ï¼ï¼ã¤ã¨ã¯éããªãï¼ã
416	* ä»ã®ç¨éã«ä½¿ç¨ããã
417	*/
418	#ifdef IMPLEMENT_EXCEPTION_01000_PROC
419	.org 0x1000 - EXCEPTION_VECTOR_BASE
420
421	IMPLEMENT_EXCEPTION_01000_PROC
422
423	#endif /* IMPLEMENT_EXCEPTION_01000_PROC */
424
425	#else /* IBM_PPC_EMB_ENV */
426
427	/*
428	* The IBM PowerPC Embedded Environmentã®å ´å
429	* ãIBMç³»PowerPC40xã·ãªã¼ãºå¯¾å¿
430	*/
431
432	/*
433	* ä¾å¤ãã¯ã¿ãã¼ãã«ã®å
434	é ã¢ãã¬ã¹
435	* ã The IBM PowerPC Embedded Environmentã®å ´å
436	* ãããã»ä¾å¤ãã¯ã¿ã®å
437	é ã¢ãã¬ã¹ã¯EVPRã¬ã¸ã¹ã¿ã§è¨å®ãã
438	* ãããã»ãã·ã³ã¹ãã¼ã¿ã¹ã¬ã¸ã¹ã¿MSRã®IPãããããªã
439	*/
440	#define EXCEPTION_VECTOR_BASE 0x100
441
442	/*
443	* Critical Interrupt
444	* ããªãã»ããï¼0x100
445	* ãCritical Interruptã¯ã¤ã³ããªã¡ã³ãã¼ã·ã§ã³ä¾åãªã®ã§
446	* ãå¦çå
447	å®¹ã¯ãã¯ãå®ç¾©ãã¦ããã
448	* ãããã¯ãåï¼CRITICAL_INTERRUPT_EXCEPTION_PROC
449	* ããã®å¦çå
450	å®¹ã¯0x100ãã¤ããè¶
451	ãã¦ã¯ãããªãã
452	* ãï¼è¶
453	ããå ´åã¯æ®ãã®é¨åãå¥ã®å ´æã«é
454	ç½®ãã¦ã
455	* ããããã«åå²ãããã¨ï¼
456	*
457	* ãCritical Interruptã¯ã«ã¼ãã«ç®¡çå¤ã®ä¾å¤ã¨ããã
458	* ãï¼ãã®å¦çã«ã¼ãã³å
459	ã§ãµã¼ãã¹ã³ã¼ã«ãä½¿ç¨ããªããï¼
460	*
461	*ããä¾å¤ã¯ã©ã¹ï¼Critical
462	* ãããªã¿ã¼ã³å½ä»¤ã¯rfci(Return From Critical Interrupt)
463	* ãããç¨ããã
464	*/
465	.section ".exception_vector","rxai"
466	.align 2
467	.org 0x100 - EXCEPTION_VECTOR_BASE
468
469	Critical_Interrupt_exception:
470	CRITICAL_INTERRUPT_EXCEPTION_PROC
471	/* æ³¨æï¼ãªã¿ã¼ã³å½ä»¤ã¯rfci(Return From Critical Interrupt) */
472
473	/*
474	* ãã·ã³ã»ãã§ãã¯ä¾å¤
475	* ããã®å¦çå
476	å®¹ã¯0x100ãã¤ããè¶
477	ãã¦ã¯ãããªãã
478	* ãï¼è¶
479	ããå ´åã¯æ®ãã®é¨åãå¥ã®å ´æã«é
480	ç½®ãã¦ã
481	* ããããã«åå²ãããã¨ï¼
482	*
483	* ãã«ã¼ãã«ç®¡çå¤ã®ä¾å¤ã¨ããã
484	* ãï¼ãã®å¦çã«ã¼ãã³å
485	ã§ãµã¼ãã¹ã³ã¼ã«ãä½¿ç¨ããªããï¼
486	*
487	*ããä¾å¤ã¯ã©ã¹ï¼Critical
488	* ãããªã¿ã¼ã³å½ä»¤ã¯rfci(Return From Critical Interrupt)
489	* ãããç¨ããã
490	*/
491	.org 0x200 - EXCEPTION_VECTOR_BASE
492
493	Machine_check_exception:
494	MACHINE_CHECK_PROC
495
496	/*
497	* Data storageä¾å¤
498	* ããã¼ã¿ã»ã¡ã¢ãªã»ã¢ã¯ã»ã¹
499	*/
500	.org 0x300 - EXCEPTION_VECTOR_BASE
501
502	DSI_exception:
503	MAKE_EXCEPTION_ENTRY(EXC_NO_DATA_STORAGE)
504	JUMP_EXC_ENTRY(Exception_Entry)
505
506	/*
507	* Instruction storageä¾å¤
508	* ãå½ä»¤ãã§ãã
509	*/
510	.org 0x400 - EXCEPTION_VECTOR_BASE
511
512	ISI_exception:
513	MAKE_EXCEPTION_ENTRY(EXC_NO_INSTRUCTION_STORAGE)
514	JUMP_EXC_ENTRY(Exception_Entry)
515
516
517	/*
518	* å¤é¨å²è¾¼ã¿
519	* ããã¹ã¦ã®å¤é¨å²ãè¾¼ã¿ã§åãçªå°ã«åå²ãã
520	*/
521	.org 0x500 - EXCEPTION_VECTOR_BASE
522
523	External_interrupt:
524	SAVE_GPR0_12_SPRG /* ã¬ã¸ã¹ã¿ã®å¾
525	é¿ */
526	/*
527	* æ¬å½ã¯ããã§ç¶ãã®å¦çãè¡ããããã0x100ãã¤ãï¼64å½ä»¤ï¼å¾ãã«
528	* ã¢ã©ã¤ã¡ã³ãä¾å¤ã®å¦çãå
529	¥ããããç¶ãã¯External_interrupt_1:ã§è¡
530	* ãã
531	*/
532	JUMP_EXC_ENTRY(External_interrupt_1)
533
534	/*
535	* ã¢ã©ã¤ã¡ã³ãä¾å¤
536	*/
537	.org 0x600 - EXCEPTION_VECTOR_BASE
538
539	Alignment_exception:
540	MAKE_EXCEPTION_ENTRY(EXC_NO_ALIGNMENT)
541	JUMP_EXC_ENTRY(Exception_Entry)
542
543	/*
544	* ããã°ã©ã ä¾å¤
545	* ããIllegal instruction
546	* ããPrivileged instruction
547	* ããTrap instruction
548	* ããFloating point enabled
549	* ããFloating point unimplemented
550	* ããAuxiliary processor unavailable
551	* ããAuxiliary processor enabled
552	*/
553	.org 0x700 - EXCEPTION_VECTOR_BASE
554
555	Program_exception:
556	MAKE_EXCEPTION_ENTRY(EXC_NO_PROGRAM)
557	JUMP_EXC_ENTRY(Exception_Entry)
558
559	/*
560	* æµ®åå°æ°ç¹ä½¿ç¨ä¸å¯
561	*/
562	#ifdef SUPPORT_IBM_PPC_EMB_APU /* APUãæã¤æ©ç¨®ã¯å©ç¨å¯è½ */
563	.org 0x800 - EXCEPTION_VECTOR_BASE
564
565	Floating_point_unavailable:
566	MAKE_EXCEPTION_ENTRY(EXC_NO_FLOATING_POINT_UNAVAILABLE)
567	JUMP_EXC_ENTRY(Exception_Entry)
568
569	#endif /* SUPPORT_IBM_PPC_EMB_APU */
570
571
572	/*
573	* ã·ã¹ãã ã³ã¼ã«
574	*/
575	.org 0xc00 - EXCEPTION_VECTOR_BASE
576
577	System_call:
578	MAKE_EXCEPTION_ENTRY(EXC_NO_SYSTEM_CALL)
579	JUMP_EXC_ENTRY(Exception_Entry)
580
581	/*
582	* ã¤ã³ããªã¡ã³ãã¼ã·ã§ã³å°ç¨ã®å¦çï¼ãªãã»ãã 0xd00-0xff0ï¼
583	* ã¤ã³ããªã¡ã³ãã¼ã·ã§ã³åºæã®ä¾å¤ãã¯ã¿
584	*
585	* ã ãªãã»ããã®æå®æ¹æ³ã«æ³¨æãããã¨ã
586	* ãå
587	·ä½çã«ã¯
588	* .org ãªãã»ãã - EXCEPTION_VECTOR_BASE
589	* ã ã®ããã«æå®ãããè©³ããã¯ä»ã®ä¾å¤è¦å ã®è©²å½åæãåç
590	§ã
591	* ä¾ãã°ãPowerPC405ã§ã¯ãªãã»ãã0xf20ã«
592	* APU Unavailableä¾å¤ã®å¦çãé
593	ç½®ãã
594	*/
595	#ifdef IMPLEMENT_EXCEPTION_D00_PROC
596
597	IMPLEMENT_EXCEPTION_D00_PROC
598
599	#endif /* IMPLEMENT_EXCEPTION_D00_PROC */
600
601	/*
602	* Programmable Interval timer
603	* ã0x10ãã¤ãããé åãå²ãå½ã¦ããã¦ããªãã®ã§æ³¨æ
604	*/
605	.org 0x1000 - EXCEPTION_VECTOR_BASE
606
607	Programmable_Interval_timer:
608	PROGRAMMABLE_INTERVAL_TIMER_PROC
609
610	/*
611	* Fixed Interval timer
612	* ã0x10ãã¤ãããé åãå²ãå½ã¦ããã¦ããªãã®ã§æ³¨æ
613	*/
614	.org 0x1010 - EXCEPTION_VECTOR_BASE
615
616	Fixed_Interval_timer:
617	FIXED_INTERVAL_TIMER_PROC
618
619	/*
620	* Watchdog timer
621	* ããªãã»ããï¼0x1020
622	*
623	*ããä¾å¤ã¯ã©ã¹ï¼Critical
624	* ãããªã¿ã¼ã³å½ä»¤ã¯rfci(Return From Critical Interrupt)
625	* ãããç¨ããã
626	*
627	* ã0x10ãã¤ãããé åãå²ãå½ã¦ããã¦ããªãã®ã§æ³¨æ
628	* ãã«ã¼ãã«ç®¡çå¤ã®ä¾å¤ã¨ããã
629	* ãï¼ãã®å¦çã«ã¼ãã³å
630	ã§ãµã¼ãã¹ã³ã¼ã«ãä½¿ç¨ããªããï¼
631	*/
632	.org 0x1020 - EXCEPTION_VECTOR_BASE
633
634	Watchdog_timer:
635	WATCHDOG_TIMER_PROC
636
637	/*
638	* Data TLB miss
639	* ã0x10ãã¤ãããé åãå²ãå½ã¦ããã¦ããªãã®ã§æ³¨æ
640	*/
641	.org 0x1100 - EXCEPTION_VECTOR_BASE
642
643	Data_TLB_miss:
644	DATA_TLB_MISS_PROC
645
646	/*
647	* Instruction TLB miss
648	* ã0x10ãã¤ãããé åãå²ãå½ã¦ããã¦ããªãã®ã§æ³¨æ
649	*/
650	.org 0x1200 - EXCEPTION_VECTOR_BASE
651
652	Instruction_TLB_miss:
653	INSTRUCTION_TLB_MISS_PROC
654
655	/*
656	* Debugä¾å¤
657	* ããªãã»ããï¼0x2000
658	*
659	*ããä¾å¤ã¯ã©ã¹ï¼Critical
660	* ãããªã¿ã¼ã³å½ä»¤ã¯rfci(Return From Critical Interrupt)
661	* ãããç¨ããã
662	* ã
663	* ãè¦å ã¯ä»¥ä¸ã®7ç¨®é¡
664	* ããTrap
665	* ããInstruction address compare
666	* ããData address compare
667	* ããInstruction complete
668	* ããBranch taken
669	* ããException
670	* ããUnconditional debug event
671	* ã
672	* ãã«ã¼ãã«ç®¡çå¤ã®ä¾å¤ã¨ããã
673	* ãï¼ãã®å¦çã«ã¼ãã³å
674	ã§ãµã¼ãã¹ã³ã¼ã«ãä½¿ç¨ããªããï¼
675	* ã
676	* ã0x10ãã¤ãããé åãå²ãå½ã¦ããã¦ããªãã®ã§æ³¨æ
677	*/
678	.org 0x2000 - EXCEPTION_VECTOR_BASE
679
680	Debug_exception:
681	DEBUG_PROC
682
683
684	/*
685	* ã¤ã³ããªã¡ã³ãã¼ã·ã§ã³å°ç¨ã®å¦çï¼ãªãã»ãã 0x2010-0x2ff0ï¼
686	* ã¤ã³ããªã¡ã³ãã¼ã·ã§ã³åºæã®ä¾å¤ãã¯ã¿ï¼ï¼ã¤ã¨ã¯éããªãï¼ã
687	* ä»ã®ç¨éã«ä½¿ç¨ããã
688	*
689	* ã ãªãã»ããã®æå®æ¹æ³ã«æ³¨æãããã¨ã
690	* ãå
691	·ä½çã«ã¯
692	* .org ãªãã»ãã - EXCEPTION_VECTOR_BASE
693	* ã ã®ããã«æå®ãããè©³ããã¯ä»ã®ä¾å¤è¦å ã®è©²å½åæãåç
694	§ã
695	*/
696	#ifdef IMPLEMENT_EXCEPTION_02010_PROC
697
698	IMPLEMENT_EXCEPTION_02010_PROC
699
700	#endif /* IMPLEMENT_EXCEPTION_01000 */
701
702
703	/*
704	* System reset
705	* ãªã»ãããã¯ã¿ã¯0xffff,fffcçªå°ã«åºå®ããã¦ãã
706	*/
707	.section ".system_reset_vector","rxai"
708	.align 2
709
710	/* ãã®è¡ã(0xffff,fffc - 4ãã¤ãÃ4å½ä»¤)çªå°ã«é
711	ç½®ããã */
712	jump_to_start:
713	LI32(r8, start)
714	mtctr r8
715	bctrl
716
717	/* ãã®è¡ã0xffff,fffcçªå°ã«é
718	ç½®ããã */
719	reset_vector:
720	b jump_to_start
721	/* ããã«ã¯1å½ä»¤ããå
722	¥ããªãã®ã§ç¸å¯¾åå²å½ä»¤ãç½®ãã */
723	/* startã«ã¼ãã³ã¸ã®åå²ã¯ä¸è¨ã®jump_to_startã§è¡ãã */
724
725
726	#endif /* IBM_PPC_EMB_ENV */
727
728
729
730
731	/*
732	* CPUä¾å¤å
733	¥å£å¦çã«ã¼ãã³ã®ç¶ã
734	*ããä¾å¤è¦å ã«ããããå
735	±éã®å¦ç
736	*ããåä¾å¤ãã¯ã¿ããåæµãã¦ãæ®ãã®å¦çãããã§è¡ãã
737	*ãããã»ããã»ããµã³ã¢ã®æ±ç¨ã¬ã¸ã¹ã¿ã¨ç¹æ®ã¬ã¸ã¹ã¿ã®å¾
738	é¿
739	*ãããã»Cè¨èªã«ã¼ãã³ã®
740	* ããã»å
741	é ã¢ãã¬ã¹ã®è¨å®
742	* ããã»å¼æ°ã®è¨å®
743	*ãããæ¸ãã ç¶æ
744	ã§ããã«æ¥ã
745	*
746	* ãã¬ã¸ã¹ã¿å²ãå½ã¦ï¼ãã¹ã¦è¨å®æ¸ã¿ã®ç¶æ
747	ã§ããã«æ¥ãï¼
748	* ããSPRG0ï¼å²è¾¼ã¿ï¼ä¾å¤ã®ãã¹ãã«ã¦ã³ã¿
749	* ããSPRG2ï¼exc_tableï¼CPUä¾å¤æ¬ä¼¼ãã¯ã¿ãã¼ãã«ã®å
750	é ã¢ãã¬ã¹ï¼
751	* ããr3ï¼CPUä¾å¤ãã³ãã©ã®å¼æ°
752	* ããr4ï¼SRR1ã®ã³ãã¼
753	* ããr6ï¼Cè¨èªã«ã¼ãã³ã®å
754	é ã¢ãã¬ã¹
755	*
756	* regflg ããã§ãã¯ããåã«å²ãè¾¼ã¿ãç¦æ¢ããªãã¨ãreqflg ããã§ãã¯
757	* å¾ã«èµ·åãããå²ãè¾¼ã¿ãã³ãã©å
758	ã§ãã£ã¹ããããè¦æ±ãããå ´åã«ã
759	* ãã£ã¹ããããããªãã
760	*
761	* ä¾å¤ãã¯ã¿ããtextã»ã¯ã·ã§ã³ã«PCç¸å¯¾åå²ã§å±ããªããªã£ãã¨ãã®ããã
762	* Exception_Entryãã°ãã¼ãã«å®£è¨ãã¦ããã
763	*
764	*/
765
766	.text
767	.align 2
768	#ifdef ABSOLUTE_JUMP_EXC_ENTRY
769	.global Exception_Entry
770	#endif /* ABSOLUTE_JUMP_EXC_ENTRY */
771
772	Exception_Entry:
773	mtctr r6; /* CTRâCè¨èªã«ã¼ãã³ã®å
774	é ã¢ãã¬ã¹ */
775	/* å²è¾¼ã¿ãã¹ãã«ã¦ã³ã¿ã®ã¤ã³ã¯ãªã¡ã³ã */
776	mfspr r8, SPRG0 /* SPRG0:å²è¾¼ã¿ï¼ä¾å¤ãã¹ãã«ã¦ã³ã¿ */
777	addi r8, r8, 1
778	mtspr SPRG0, r8
779
780	/* CPUä¾å¤çºçæã®ã³ã³ããã¹ãã®å¤å¥ */
781	cmpwi crf0, r8, 1
782	bne exception_from_int
783
784	/* åæ®µã®CPUä¾å¤ã®å ´å */
785	exception_from_task:
786	/*
787	* ã³ã¼ãªã³ã°ã»ã³ã³ãã³ã·ã§ã³ã«åããã¦ãã¹ã¿ãã¯ãã¤ã³ã¿ã
788	*ã8ãã¤ããããã¦ããã
789	*ã
790	* -8 ----------------------
791	* \| task sp \|
792	* -4 ----------------------ã
793	* \| \|âCè¨èªã«ã¼ãã³ã®å¼ã³åºãã«ãã
794	* STACKTOPâ ---------------------- æ¸ãè¾¼ã¾ãã
795	*
796	*/
797	LI32(r9, STACKTOP-STACK_MARGIN)
798	stw sp, 0(r9) /* ã¿ã¹ã¯ã¹ã¿ãã¯ãã¤ã³ã¿ã®ä¿å */
799	mr sp, r9 /* ã¹ã¿ãã¯åãæ¿ã */
800
801
802	/*
803	* ãã¯ãå®ç¾©ï¼CPUä¾å¤ãã³ãã©ã®å¼åºã
804	* ããããããåæ®µã®ä¾å¤ã¨å¤éä¾å¤ã®å
805	±éå¦ç
806	*
807	* å¦çå
808	å®¹
809	* ãCè¨èªã«ã¼ãã³å¼ã³åºã
810	*
811	* å¼æ°
812	* ã labelï¼ã©ãã«èå¥ç¨æåå
813	* ã ããããï¼è¤æ°ç®æã§ãã®ãã¯ããä½¿ç¨ã§ããããã«ããããï¼
814	*
815	* åææ¡ä»¶
816	* ã r3=Cè¨èªã«ã¼ãã³ã®å¼æ°
817	* ã r4=SRR1
818	* ã CTR=Cè¨èªã«ã¼ãã³ã®å
819	é ã¢ãã¬ã¹
820	* ããã®ç¶æ
821	ã§ä½¿ç¨ããã
822	*
823	* åè
824	* ãCPUä¾å¤ãã³ãã©ã®èµ·åã«ãããCPUããã¯ç¶æ
825	ãå¤æ´ãã¦ã¯ãããªã
826	* ãã¤ã¾ããCPUä¾å¤çºçæã«CPUããã¯ç¶æ
827	ã§ããã°ãCPUããã¯ç¶æ
828	ã®
829	* ãã¾ã¾ãCPUä¾å¤ãã³ãã©ãèµ·åããã
830	* ãï¼CPUä¾å¤çºçæã«CPUããã¯è§£é¤ç¶æ
831	ã§ããã°ãCPUããã¯è§£é¤ç¶æ
832	ã®
833	* ããã¾ã¾ãCPUä¾å¤ãã³ãã©ãèµ·åãããï¼
834	* ãã
835	*/
836	#define _CALL_EXCEPTION_ROUTINE(label) \
837	andi. r6, r4, MSR_EE; /* r4ï¼SSR1ã®ã³ãã¼ */ \
838	/* çµæãã¼ããªãã°ï¼CPUããã¯ç¶æ
839	ã ã£ããªãï¼ */ \
840	/* EQãã©ã°ãã»ãããããï¼CPUããã¯è§£é¤ç¶æ
841	ãªãåå²ï¼ */ \
842	bne exception_from_cpu_unlock_##label; \
843	\
844	/* CPUä¾å¤çºçæã«CPUããã¯ç¶æ
845	ã ã£ãå ´å */ \
846	/* CPUããã¯ç¶æ
847	ã®ã¾ã¾ãCPUä¾å¤ãã³ãã©ãå¼ã³åºã */ \
848	/* ãCè¨èªã«ã¼ãã³ããã®æ»ãçªå°ãè¨å® */ \
849	LI32(r7, exit_CALL_EXCEPTION_ROUTINE_##label); \
850	mtspr LR, r7; \
851	bctr; /* Cè¨èªã«ã¼ãã³å¼ã³åºã */ \
852	/* exit_CALL_EXCEPTION_ROUTINE_##labelçªå°ã«æ»ã£ã¦ãã */ \
853	\
854	/* CPUä¾å¤çºçæã«CPUããã¯è§£é¤ç¶æ
855	ã ã£ãå ´å */ \
856	exception_from_cpu_unlock_##label:; \
857	mfmsr r10; \
858	ori r11, r10, MSR_EE; /* EEããããã»ãã */ \
859	mtmsr r11; /* å²è¾¼ã¿è¨±å¯ */ \
860	bctrl; /* Cè¨èªã«ã¼ãã³å¼ã³åºã */ \
861	mfmsr r10; \
862	xori r11, r10, MSR_EE; /* EEããããã¯ãªã¢ */ \
863	mtmsr r11; /* å²è¾¼ã¿ç¦æ¢ (a) */ \
864	exit_CALL_EXCEPTION_ROUTINE_##label: /* ãã¯ãã®åºå£ã©ãã« */
865
866
867	/* ãã¯ãå¼æ°labelãç¢ºå®ã«ãã¯ãå±éããããããã¯ãã2éã«ãã¦ãã */
868	#define CALL_EXCEPTION_ROUTINE(label) _CALL_EXCEPTION_ROUTINE(label)
869
870	/* Cè¨èªã«ã¼ãã³å¼ã³åºã */
871	CALL_EXCEPTION_ROUTINE(exception_from_task)
872	/*
873	* å²è¾¼ã¿ç¦æ¢ã§æ»ã£ã¦ãã
874	*ããä¾å¤çºçæã«CPUããã¯ãè§£é¤ããã¦ããå ´åã
875	*ããä¸è¨(a)è¡ã§å²è¾¼ã¿ç¦æ¢ã«ãã¦ãã
876	*/
877	li r0, 0
878	mtspr SPRG0, r0 /* å²è¾¼ã¿ãã¹ãã«ã¦ã³ã¿ãã¯ãªã¢ */
879	lwz sp, 0(sp) /* ã¹ã¿ãã¯åæ¿ */
880	lis r3, reqflg@ha
881	lwz r4, reqflg@l(r3) /* r4=reqflg */
882	cmpwi crf0, r4, 0 /* reqflgã®ãã§ãã¯ */
883	beq ret_to_task_exc /* ãã£ã¹ãããè¦æ±ããªãå ´åã¯åå² */
884	stw r0, reqflg@l(r3) /* reqflgã®ã¯ãªã¢ */
885	b ret_exc /* åºå£å¦çã¸ã¸ã£ã³ã */
886
887	/* å¤éä¾å¤ã®å ´å */
888	exception_from_int:
889	/*
890	* ã³ã¼ãªã³ã°ã»ã³ã³ãã³ã·ã§ã³ã«åããã¦ãã¹ã¿ãã¯ãã¤ã³ã¿ã
891	*ã8ãã¤ããããã¦ãã
892	*ã
893	* -8 ----------------------
894	* \| \|
895	* -4 ----------------------ã
896	* \| \|âCè¨èªã«ã¼ãã³ã®å¼ã³åºãã«ãã
897	* spâ ---------------------- æ¸ãè¾¼ã¾ãã
898	*
899	*/
900	subi sp, sp, STACK_MARGIN
901
902	/* Cè¨èªã«ã¼ãã³å¼ã³åºã */
903	CALL_EXCEPTION_ROUTINE(exception_from_int)
904	/*
905	* å²è¾¼ã¿ç¦æ¢ã§æ»ã£ã¦ãã
906	*ããä¾å¤çºçæã«CPUããã¯ãè§£é¤ããã¦ããå ´åã
907	*ããä¸è¨(a)è¡ã§å²è¾¼ã¿ç¦æ¢ã«ãã¦ãã
908	* ã
909	* ãåå²å
910	ret_to_task_excã§ã¯CPUä¾å¤ããã®ãªã¿ã¼ã³å½ä»¤rfiã«ãã
911	* ãããMSRâSRR1
912	* ãã¨ãªãã®ã§ãå
913	ã®ã³ã³ããã¹ãã«æ»ãã¨ãã«ã¯CPUä¾å¤çºç
914	* ãç´åã®CPUããã¯ï¼ããã¯è§£é¤ç¶æ
915	ãå¾©å
916	ããã
917	*/
918	/* ã¹ã¿ãã¯ãã¤ã³ã¿ãå
919	ã«æ»ãï¼ä¸è¨åç
920	§ï¼ */
921	addi sp, sp, STACK_MARGIN
922	mfspr r3, SPRG0 /* SPRG0:å²è¾¼ã¿ï¼ä¾å¤ãã¹ãã«ã¦ã³ã¿ */
923	subi r3, r3, 1 /* å²è¾¼ã¿ãã¹ãã«ã¦ã³ã¿ã®ãã£ã¯ãªã¡ã³ã */
924	mtspr SPRG0, r3
925	b ret_to_task_exc
926
927
928
929	/*
930	* å²è¾¼ã¿åºå
931	¥å£å¦çã«ã¼ãã³ã®ç¶ã
932	*ããå²è¾¼ã¿ãã¯ã¿ã0x100ãã¤ãï¼64å½ä»¤åï¼ãããªãã®ã§ã
933	*ããæ®ãã®å¦çãããã§è¡ãã
934	*ããå²è¾¼ã¿ã³ã³ããã¼ã©ä¾åé¨ãåç´ã§ããã°64å½ä»¤ã«åã¾ã
935	*ããããç¥ããªãããå¯èªæ§ãèæ
936	®ãã¦ãããã«è¨è¿°ããã
937	*ããããã»ããµã³ã¢ã®æ±ç¨ã¬ã¸ã¹ã¿ã¨ç¹æ®ã¬ã¸ã¹ã¿ã®å¾
938	é¿ã
939	*ããæ¸ãã ç¶æ
940	ã§ããã«æ¥ã
941	*
942	* ããã¹ã¦ã®å¤é¨å²ãè¾¼ã¿ã§åãçªå°ã«åå²ãã
943	*
944	* SPRG0ã¬ã¸ã¹ã¿ãå²è¾¼ã¿ï¼ä¾å¤ã®ãã¹ãã«ã¦ã³ã¿ã¨ãã¦ä½¿ç¨ããã
945	*
946	* regflg ããã§ãã¯ããåã«å²ãè¾¼ã¿ãç¦æ¢ããªãã¨ãreqflg ããã§ãã¯
947	* å¾ã«èµ·åãããå²ãè¾¼ã¿ãã³ãã©å
948	ã§ãã£ã¹ããããè¦æ±ãããå ´åã«ã
949	* ãã£ã¹ããããããªãã
950	*
951	* ä¾å¤ãã¯ã¿ããtextã»ã¯ã·ã§ã³ã«PCç¸å¯¾åå²ã§å±ããªããªã£ãã¨ãã®ããã
952	* External_interrupt_1ãã°ãã¼ãã«å®£è¨ãã¦ããã
953	*
954	*/
955
956	.text
957	.align 2
958	#ifdef ABSOLUTE_JUMP_EXC_ENTRY
959	.global External_interrupt_1
960	#endif /* ABSOLUTE_JUMP_EXC_ENTRY */
961
962	External_interrupt_1:
963	/* ããã»ããµã³ã¢ã®ã¬ã¸ã¹ã¿ã®å¾
964	é¿ã¯æ¸ãã§ãã */
965
966	PUSH_ICU_IPM /* å²è¾¼ã¿ã³ã³ããã¼ã©ICUã®IPMãå¾
967	é¿ */
968	/* IPMã®ãã¼ã¿ãµã¤ãºã®å¦ä½ã«ãããã */
969	/* ã¹ã¿ãã¯ãã¤ã³ã¿ã¯4ãã¤ãå¢çã */
970	/* å®ããã¨ */
971
972	/* å²è¾¼ã¿ãã¹ãã«ã¦ã³ã¿ã®ã¤ã³ã¯ãªã¡ã³ã */
973	mfspr r3, SPRG0 /* SPRG0:å²è¾¼ã¿ï¼ä¾å¤ãã¹ãã«ã¦ã³ã¿ */
974	addi r3, r3, 1
975	mtspr SPRG0, r3
976
977	/* å²è¾¼ã¿å
978	ã®ã³ã³ããã¹ãã®å¤å¥ */
979	cmpwi crf0, r3, 1
980	bne interrupt_from_int
981
982	/* åæ®µã®å²è¾¼ã¿ã®å ´å */
983	interrupt_from_task:
984	/*
985	* ã³ã¼ãªã³ã°ã»ã³ã³ãã³ã·ã§ã³ã«åããã¦ãã¹ã¿ãã¯ãã¤ã³ã¿ã
986	*ã8ãã¤ããããã¦ããã
987	*ã
988	* -8 ----------------------
989	* \| task sp \|
990	* -4 ----------------------ã
991	* \| \|âCè¨èªã«ã¼ãã³ã®å¼ã³åºãã«ãã
992	* STACKTOPâ ---------------------- æ¸ãè¾¼ã¾ãã
993	*
994	*/
995	LI32(r4, STACKTOP-STACK_MARGIN) /* r4=STACKTOP */
996	stw sp, 0(r4) /* ã¿ã¹ã¯ã¹ã¿ãã¯ãã¤ã³ã¿ã®ä¿å */
997	mr sp, r4 /* ã¹ã¿ãã¯åãæ¿ã */
998
999	/*
1000	* ICUä¾åã®å²è¾¼ã¿å¦ç
1001	* ã å¦çå
1002	å®¹
1003	* ããã»å²è¾¼ã¿è¦å ã®å¤å¥
1004	* ããã»å²è¾¼ã¿ãã¹ã¯ã®è¨å®
1005	* ããã»å²è¾¼ã¿è¨±å¯
1006	* ããã»Cè¨èªã«ã¼ãã³å¼ã³åºã
1007	* ããã»å²è¾¼ã¿ç¦æ¢
1008	* ããã»å²ãè¾¼ã¿è¦æ±ãã©ã°ã®ã¯ãªã¢ï¼å¿
1009	è¦ã§ããã°ï¼
1010	*/
1011	PROC_ICU(FROM_TASK)
1012	/* å²è¾¼ã¿ç¦æ¢ã§æ»ã£ã¦ãã */
1013
1014	li r0, 0
1015	mtspr SPRG0, r0 /* å²è¾¼ã¿ãã¹ãã«ã¦ã³ã¿ãã¯ãªã¢ */
1016	lwz sp, 0(sp) /* ã¹ã¿ãã¯åæ¿ */
1017	POP_ICU_IPM /* å²è¾¼ã¿ã³ã³ããã¼ã©ICUã®IPMãå¾©å¸° */
1018	/* IPMã®ãã¼ã¿ãµã¤ãºã®å¦ä½ã«ãããã */
1019	/* ã¹ã¿ãã¯ãã¤ã³ã¿ã¯4ãã¤ãå¢çã */
1020	/* å®ããã¨ */
1021	lis r3, reqflg@ha
1022	lwz r4, reqflg@l(r3) /* r4=reqflg */
1023	cmpwi crf0, r4, 0 /* reqflgã®ãã§ãã¯ */
1024	beq ret_to_task_int /* ãã£ã¹ãããè¦æ±ããªãå ´åã¯åå² */
1025	stw r0, reqflg@l(r3) /* reqflgã®ã¯ãªã¢ */
1026	b ret_int /* åºå£å¦çã¸ã¸ã£ã³ã */
1027
1028
1029	/* å¤éå²è¾¼ã¿ã®å ´å */
1030	interrupt_from_int:
1031	/*
1032	* ã³ã¼ãªã³ã°ã»ã³ã³ãã³ã·ã§ã³ã«åããã¦ãã¹ã¿ãã¯ãã¤ã³ã¿ã
1033	*ã8ãã¤ããããã¦ãã
1034	*ã
1035	* -8 ----------------------
1036	* \| \|
1037	* -4 ----------------------ã
1038	* \| \|âCè¨èªã«ã¼ãã³ã®å¼ã³åºãã«ãã
1039	* spâ ---------------------- æ¸ãè¾¼ã¾ãã
1040	*
1041	*/
1042	subi sp, sp, STACK_MARGIN
1043
1044	PROC_ICU(FROM_INT) /* ICUä¾åã®å²è¾¼ã¿å¦ç */
1045	/* å²è¾¼ã¿ç¦æ¢ã§æ»ã£ã¦ãã */
1046
1047	/* ã¹ã¿ãã¯ãã¤ã³ã¿ãå
1048	ã«æ»ãï¼ä¸è¨åç
1049	§ï¼ */
1050	addi sp, sp, STACK_MARGIN
1051	mfspr r3, SPRG0 /* SPRG0:å²è¾¼ã¿ï¼ä¾å¤ãã¹ãã«ã¦ã³ã¿ */
1052	subi r3, r3, 1 /* å²è¾¼ã¿ãã¹ãã«ã¦ã³ã¿ã®ãã£ã¯ãªã¡ã³ã */
1053	mtspr SPRG0, r3
1054	POP_ICU_IPM /* å²è¾¼ã¿ã³ã³ããã¼ã©ICUã®IPMãå¾©å¸° */
1055	/* IPMã®ãã¼ã¿ãµã¤ãºã®å¦ä½ã«ãããã */
1056	/* ã¹ã¿ãã¯ãã¤ã³ã¿ã¯4ãã¤ãå¢çã */
1057	/* å®ããã¨ */
1058
1059	/*
1060	* ãã£ã¹ãããã£ãå¼ã°ãã«åç´ã«å²è¾¼ã¿å
1061	ï¼ä¾å¤çºçå
1062	ï¼ã«æ»ãå ´å
1063	*
1064	* rfiå½ä»¤ã¯åæå½ä»¤ãªã®ã§ãä¸è¨ã®ã¬ã¸ã¹ã¿ã®å¾©å¸°ã¨spã®å ç®ãçµäºãã¦
1065	* ããå
1066	ã®ã³ã³ããã¹ãã«æ»ãã
1067	* spã®å ç®ã ããå
1068	ã«æ¸ãã§å²è¾¼ã¿è¨±å¯ã«ãªãå¿é
1069	ã¯ãªãã
1070	*
1071	* CPUä¾å¤ããå¾©å¸°ããå ´å
1072	* ããCPUä¾å¤ããã®ãªã¿ã¼ã³å½ä»¤rfiã«ãã
1073	* ãããMSRâSRR1
1074	* ããã¨ãªãã®ã§ãå
1075	ã®ã³ã³ããã¹ãã«æ»ãã¨ãã«ã¯CPUä¾å¤çºç
1076	* ããç´åã®CPUããã¯ï¼ããã¯è§£é¤ç¶æ
1077	ãå¾©å
1078	ããã
1079	*/
1080	ret_to_task_int:
1081	ret_to_task_exc:
1082	LOAD_R0_12_SPRG /* gpr0-1,3-12, ç¹æ®ã¬ã¸ã¹ã¿ã®å¾©å
1083	*/
1084	addi sp, sp, GPR0_12_SPRG_AREA_SIZE
1085	rfi /* å²è¾¼ã¿å
1086	ã¸å¾©å¸° */
1087
1088
1089
1090	/* ã¬ã¸ã¹ã¿ãå¾
1091	é¿ããã®ã«å¿
1092	è¦ãªãã¤ãæ° */
1093	/* gpr13-31,LR */
1094	#define GPR13_31_LR_AREA_SIZE (GPR13_31_AREA_SIZE +4)
1095
1096	/*
1097	* ãã¯ãå®ç¾©ï¼æ±ç¨ã¬ã¸ã¹ã¿gpr13-31ã®å¾
1098	é¿
1099	*/
1100
1101	#ifdef USE_MULTIPLE_WORD_LOAD_STORE
1102	/*
1103	* æ´æ°ãã¼ãï¼ã¹ãã¢ã»ãã«ããã«å½ä»¤
1104	*ããã¤ã³ããªã¡ã³ãã¼ã·ã§ã³ã«ãã£ã¦ã¯ããã£ã¦é
1105	ããªã£ã¦
1106	*ãããã¾ãã®ã§æ³¨æãå¿
1107	è¦
1108	*/
1109
1110	#if SIL_ENDIAN == SIL_ENDIAN_LITTLE
1111	ããï¼ããã§ã³ã³ãã¤ã«ã»ã¨ã©ã¼
1112	ããããªãã«ã»ã¨ã³ãã£ã¢ã³ã»ã¢ã¼ãã«ããã¨ãã«ã¯æ©è½ããªã
1113	ãããï¼ãã¼ãã¦ã§ã¢ã«ããå¶éäºé
1114	ï¼
1115	#endif
1116
1117
1118	#define STORE_R13_31 \
1119	stmw r13, 0(sp) /* gpr13-31ãå¾
1120	é¿ */
1121
1122	#else /* USE_MULTIPLE_WORD_LOAD_STORE */
1123	#define STORE_R13_31 \
1124	stw r13, 0*4(sp); \
1125	stw r14, 1*4(sp); \
1126	stw r15, 2*4(sp); \
1127	stw r16, 3*4(sp); \
1128	stw r17, 4*4(sp); \
1129	stw r18, 5*4(sp); \
1130	stw r19, 6*4(sp); \
1131	stw r20, 7*4(sp); \
1132	stw r21, 8*4(sp); \
1133	stw r22, 9*4(sp); \
1134	stw r23, 10*4(sp); \
1135	stw r24, 11*4(sp); \
1136	stw r25, 12*4(sp); \
1137	stw r26, 13*4(sp); \
1138	stw r27, 14*4(sp); \
1139	stw r28, 15*4(sp); \
1140	stw r29, 16*4(sp); \
1141	stw r30, 17*4(sp); \
1142	stw r31, 18*4(sp)
1143	#endif /* USE_MULTIPLE_WORD_LOAD_STORE */
1144
1145	/* ãã¯ãå®ç¾©ããã¾ã§ */
1146
1147
1148	/*
1149	* ãã¯ãå®ç¾©ï¼æ±ç¨ã¬ã¸ã¹ã¿gpr13-31ã®å¾©å
1150
1151	*/
1152
1153	#ifdef USE_MULTIPLE_WORD_LOAD_STORE
1154	/*
1155	* æ´æ°ãã¼ãï¼ã¹ãã¢ã»ãã«ããã«å½ä»¤
1156	*ããã¤ã³ããªã¡ã³ãã¼ã·ã§ã³ã«ãã£ã¦ã¯ããã£ã¦é
1157	ããªã£ã¦
1158	*ãããã¾ãã®ã§æ³¨æãå¿
1159	è¦
1160	*/
1161	#define LOAD_R13_31 \
1162	lmw r13, 0(sp) /* gpr13-31ãå¾©å
1163	*/
1164
1165	#else /* USE_MULTIPLE_WORD_LOAD_STORE */
1166	#define LOAD_R13_31 \
1167	lwz r13, 0*4(sp); \
1168	lwz r14, 1*4(sp); \
1169	lwz r15, 2*4(sp); \
1170	lwz r16, 3*4(sp); \
1171	lwz r17, 4*4(sp); \
1172	lwz r18, 5*4(sp); \
1173	lwz r19, 6*4(sp); \
1174	lwz r20, 7*4(sp); \
1175	lwz r21, 8*4(sp); \
1176	lwz r22, 9*4(sp); \
1177	lwz r23, 10*4(sp); \
1178	lwz r24, 11*4(sp); \
1179	lwz r25, 12*4(sp); \
1180	lwz r26, 13*4(sp); \
1181	lwz r27, 14*4(sp); \
1182	lwz r28, 15*4(sp); \
1183	lwz r29, 16*4(sp); \
1184	lwz r30, 17*4(sp); \
1185	lwz r31, 18*4(sp)
1186	#endif /* USE_MULTIPLE_WORD_LOAD_STORE */
1187
1188	/* ãã¯ãå®ç¾©ããã¾ã§ */
1189
1190
1191
1192
1193	/*
1194	* ã¿ã¹ã¯ãã£ã¹ãããã£
1195	*
1196	* dispatch ã¯ãSPRG0 = 0,å²è¾¼ã¿ç¦æ¢ç¶æ
1197	ã§å¼ã³åºããªããã°ãªããªãï¼
1198	* exit_and_dispatch ãï¼SPRG0 = 0ã»å²è¾¼ã¿ç¦æ¢ç¶æ
1199	ã§å¼ã³åºãã®ãåå
1200	* ã§ãããï¼ã«ã¼ãã«èµ·åæã«å¯¾å¿ããããï¼SPRG0 = 1ã§å¼ã³åºããå ´å
1201	* ã«ãå¯¾å¿ãã¦ããï¼
1202	*/
1203
1204	.global dispatch
1205	dispatch:
1206	/* ã¹ã¯ã©ããã¬ã¸ã¹ã¿ã®å¾
1207	é¿ */
1208	subi sp, sp, GPR13_31_LR_AREA_SIZE + FPR14_31_AREA_SIZE
1209	STORE_R13_31 /* gpr13-31ã®å¾
1210	é¿ */
1211
1212	mfspr r7, LR
1213	stw r7, GPR13_31_LR_AREA_SIZE - 4(sp) /* LRã®å¾
1214	é¿ */
1215
1216	/* æµ®åå°æ°ç¹ã¬ã¸ã¹ã¿ã®å¾
1217	é¿ */
1218	#ifdef SUPPORT_FLOATING_POINT_REG
1219	/* ãã¼ãã¦ã§ã¢ãæµ®åå°æ°ç¹ã¬ã¸ã¹ã¿ãå®è£
1220	ãã¦ããå ´å */
1221	/* æªå®æï¼æ¬æ¥ãªã8ãã¤ãã«ã¢ã©ã¤ã¡ã³ããã */
1222	stfd f14, 0*8+GPR13_31_LR_AREA_SIZE(sp)
1223	stfd f15, 1*8+GPR13_31_LR_AREA_SIZE(sp)
1224	stfd f16, 2*8+GPR13_31_LR_AREA_SIZE(sp)
1225	stfd f17, 3*8+GPR13_31_LR_AREA_SIZE(sp)
1226	stfd f18, 4*8+GPR13_31_LR_AREA_SIZE(sp)
1227	stfd f19, 5*8+GPR13_31_LR_AREA_SIZE(sp)
1228	stfd f20, 6*8+GPR13_31_LR_AREA_SIZE(sp)
1229	stfd f21, 7*8+GPR13_31_LR_AREA_SIZE(sp)
1230	stfd f22, 8*8+GPR13_31_LR_AREA_SIZE(sp)
1231	stfd f23, 9*8+GPR13_31_LR_AREA_SIZE(sp)
1232	stfd f24, 10*8+GPR13_31_LR_AREA_SIZE(sp)
1233	stfd f25, 11*8+GPR13_31_LR_AREA_SIZE(sp)
1234	stfd f26, 12*8+GPR13_31_LR_AREA_SIZE(sp)
1235	stfd f27, 13*8+GPR13_31_LR_AREA_SIZE(sp)
1236	stfd f28, 14*8+GPR13_31_LR_AREA_SIZE(sp)
1237	stfd f29, 15*8+GPR13_31_LR_AREA_SIZE(sp)
1238	stfd f30, 16*8+GPR13_31_LR_AREA_SIZE(sp)
1239	stfd f31, 17*8+GPR13_31_LR_AREA_SIZE(sp)
1240	#endif /* SUPPORT_FLOATING_POINT_REG */
1241
1242	lis r3, runtsk@ha
1243	LI32(r4, dispatch_r)
1244	lwz r5, runtsk@l(r3) /* r5 = runtsk */
1245	stw sp, TCB_sp(r5) /* runtsk->sp = sp */
1246	stw r4, TCB_pc(r5) /* runtsk->pc = dispatch_r */
1247	b dispatcher
1248
1249
1250	/* ãã£ã¹ãããã£ã®åºå£ */
1251	/* ã¹ã¿ãã¯ãã¤ã³ã¿ã®å¾©å
1252	ã¯æ¸ãã§ãã */
1253	/* ããr10ã«runtskãå
1254	¥ã£ã¦å¼ã°ãã */
1255	dispatch_r:
1256	/* ã¹ã¯ã©ããã¬ã¸ã¹ã¿ã®å¾©å¸° */
1257
1258	/* æµ®åå°æ°ç¹ã¬ã¸ã¹ã¿ */
1259	#ifdef SUPPORT_FLOATING_POINT_REG
1260	/* ãã¼ãã¦ã§ã¢ãæµ®åå°æ°ç¹ã¬ã¸ã¹ã¿ãå®è£
1261	ãã¦ããå ´å */
1262	/* æªå®æï¼æ¬æ¥ãªã8ãã¤ãã«ã¢ã©ã¤ã¡ã³ããã */
1263	lfd f14, 0*8+GPR13_31_LR_AREA_SIZE(sp)
1264	lfd f15, 1*8+GPR13_31_LR_AREA_SIZE(sp)
1265	lfd f16, 2*8+GPR13_31_LR_AREA_SIZE(sp)
1266	lfd f17, 3*8+GPR13_31_LR_AREA_SIZE(sp)
1267	lfd f18, 4*8+GPR13_31_LR_AREA_SIZE(sp)
1268	lfd f19, 5*8+GPR13_31_LR_AREA_SIZE(sp)
1269	lfd f20, 6*8+GPR13_31_LR_AREA_SIZE(sp)
1270	lfd f21, 7*8+GPR13_31_LR_AREA_SIZE(sp)
1271	lfd f22, 8*8+GPR13_31_LR_AREA_SIZE(sp)
1272	lfd f23, 9*8+GPR13_31_LR_AREA_SIZE(sp)
1273	lfd f24, 10*8+GPR13_31_LR_AREA_SIZE(sp)
1274	lfd f25, 11*8+GPR13_31_LR_AREA_SIZE(sp)
1275	lfd f26, 12*8+GPR13_31_LR_AREA_SIZE(sp)
1276	lfd f27, 13*8+GPR13_31_LR_AREA_SIZE(sp)
1277	lfd f28, 14*8+GPR13_31_LR_AREA_SIZE(sp)
1278	lfd f29, 15*8+GPR13_31_LR_AREA_SIZE(sp)
1279	lfd f30, 16*8+GPR13_31_LR_AREA_SIZE(sp)
1280	lfd f31, 17*8+GPR13_31_LR_AREA_SIZE(sp)
1281	#endif /* SUPPORT_FLOATING_POINT_REG */
1282
1283	/* æ±ç¨ã¬ã¸ã¹ã¿ */
1284	LOAD_R13_31
1285
1286	/* LRã®å¾©å
1287	*/
1288	lwz r7, GPR13_31_LR_AREA_SIZE - 4(sp)
1289	mtspr LR, r7
1290
1291	addi sp, sp, GPR13_31_LR_AREA_SIZE + FPR14_31_AREA_SIZE
1292
1293	/*
1294	* ã¿ã¹ã¯ä¾å¤å¦çè¦æ±ã®ãã§ãã¯
1295	* dispatch_rã¯dispatcherããå¼ã³åºãããããï¼
1296	* runtskã¯r10ã«å
1297	¥ã£ã¦ããï¼
1298	*/
1299	lbz r4, TCB_enatex(r10) /* r10=runtsk */
1300	/*
1301	* ãã¹ã¯ãã¼ã¿ã®ãããå¹
1302	ã¨ã¨ã³ãã£ã¢ã³ã¯makeoffset.cã®
1303	* BIT_BBããã³BIT_LBã§æå®ãã¦ãã
1304	*/
1305	andi. r5, r4, TCB_enatex_mask /* r5 = runtsk->enatex */
1306	/* çµæãã¼ããªãã°ãEQãã©ã°ãã»ããããã */
1307
1308	/* ã¿ã¹ã¯ä¾å¤å¦çç¦æ¢ãªãdispatch()ã®å¼ã³åºãå
1309	ã«æ»ã */
1310	beqlr /* ï¼LRã«æ»ãçªå°ãæ ¼ç´ããã¦ããï¼ */
1311	lwz r6, TCB_texptn(r10) /* r6 = runtsk->texptn */
1312	cmpwi crf0, r6, 0
1313	/* ã¿ã¹ã¯ä¾å¤è¦æ±ããªããã° */
1314	/* dispatch()ã®å¼ã³åºãå
1315	ã«æ»ã */
1316	beqlr /* ï¼LRã«æ»ãçªå°ãæ ¼ç´ããã¦ããï¼ */
1317
1318	b call_texrtn /* ã¿ã¹ã¯ä¾å¤å¦çã«ã¼ãã³å¼ã³åºã */
1319	/*
1320	* call_texrtn()ããããã«ã¯æ»ã£ã¦ããªãã§ãdispatch()ã®
1321	*ãå¼ã³åºãå
1322	ï¼=LRã¬ã¸ã¹ã¿ãæãç¤ºãçªå°ï¼ã«ç´æ¥æ»ãã
1323	*ã
1324	*ãcall_texrtn()ã®å¼ã³åºãã«ãã(sp+3)ã(ps+7)çªå°ã®å
1325	å®¹ã
1326	*ãç ´å£ãããããspã®ä½ç½®ã¯dispatch()ãå¼ã³åºããã¨ãã¨åã
1327	*ããªã®ã§åé¡ãªã
1328	*ã
1329	* spâ ----------------------
1330	* \| \|
1331	* +4 ----------------------ã
1332	* \| \|âcall_texrtn()ã®å¼ã³åºãã«ãã
1333	* +8 ---------------------- æ¸ãè¾¼ã¾ãã
1334	*
1335	*
1336	*ãæ³¨æ
1337	ãã*ããã¿ã¹ã¯ä¾å¤å¦çã«ã¼ãã³å
1338	ã§æµ®åå°æ°ç¹ã¬ã¸ã¹ã¿ãä½¿ç¨ãã
1339	ãã*ããå ´åã¯ãã¿ã¹ã¯ä¾å¤å¦çã«ã¼ãã³å´ã§æµ®åå°æ°ç¹ã¬ã¸ã¹ã¿ã®
1340	ãã*ããå¾
1341	é¿ï¼å¾©å
1342	ãè¡ããã¨ã
1343	*/
1344
1345
1346	.global exit_and_dispatch
1347	exit_and_dispatch:
1348	li r0, 0
1349	mtspr SPRG0, r0 /* ãã¹ãã«ã¦ã³ã¿ãã¯ãªã¢ */
1350
1351	dispatcher:
1352	/*
1353	* ããã«ã¯å²ãè¾¼ã¿ç¦æ¢ã§æ¥ããã¨
1354	*/
1355	LOAD_VAL32(r10, schedtsk) /* r10 = schedtsk */
1356	lis r5, runtsk@ha
1357	/*
1358	* ããã§runtskã«schedtskãä»£å
1359	¥ããã®ã¯ï¼ã¤ã®æå³ãããã
1360	* ã(1) schedtsk != NULLã®å ´å
1361	* ããããéå¸¸ã®ã¿ã¹ã¯åãæ¿ããè¡ãã
1362	* ã(2) schedtsk == NULLã®å ´å
1363	* ããããruntskã«NULLãä»£å
1364	¥ãã¦ããã
1365	* ããããï¼dispatcher_1ä»¥éã®å²è¾¼ã¿å¾
1366	ã¡ã§å²è¾¼ã¿ãå
1367	¥ãããã®ä¸ã§
1368	* ãããããiget_tid()ãã³ã¼ã«ãããã¨ãã«æ£ããTSK_NONEãè¿ããã
1369	* ãããããã«ã¯ãå®è¡ç¶æ
1370	ã®ã¿ã¹ã¯ããªãæã«ãruntskãNULLã«ãã¦
1371	* ãããããããå¿
1372	è¦ããããï¼
1373	*/
1374	stw r10, runtsk@l(r5) /* runtsk=schedtsk(=r10) */
1375
1376	cmpwi crf0, r10, 0
1377	beq dispatcher_1 /* schedtskãç¡ããã°å²è¾¼ã¿å¾
1378	ã¡ã¸ */
1379
1380	lwz r6, TCB_pc(r10) /* å®è¡åéçªå°ãåãåºãã¦ */
1381	mtctr r6 /* CTR<-å®è¡åéçªå° */
1382	lwz sp, TCB_sp(r10) /* ã¹ã¿ãã¯ãã¤ã³ã¿ãå¾©å
1383	*/
1384	bctr /* ã¸ã£ã³ãï¼ä¸è¨åç
1385	§ï¼ */
1386
1387	/*
1388	* å®è¡åéçªå°ã¯ä»¥ä¸ã®3éã
1389	* ããããã®å ´åãr10=runtskã§å¼ã³åºããã¨
1390	* ããã»ãã£ã¹ãããã£ã®åºå£ãdispatch_r
1391	* ããã»å²è¾¼ã¿ï¼ä¾å¤ã®åºå£ããret_int_r
1392	* ããã»ã¿ã¹ã¯èµ·åç´å¾ããããactivate_r
1393	*/
1394
1395
1396	/*
1397	*ãå®è¡ãã¹ãã¿ã¹ã¯ãç¾ããã¾ã§å¾
1398	ã¤å¦ç
1399	*
1400	* ããã§éã¿ã¹ã¯ã³ã³ããã¹ãã«åãæããã®ã¯ï¼ããã§çºçããå²è¾¼ã¿
1401	* å¦çã«ã©ã®ã¹ã¿ãã¯ãä½¿ããã¨ããåé¡ã®è§£æ±ºã¨ï¼å²è¾¼ã¿ãã³ãã©å
1402	ã§
1403	* ã®ã¿ã¹ã¯ãã£ã¹ãããã®é²æ¢ã¨ããäºã¤ã®æå³ãããï¼
1404	*/
1405	dispatcher_1:
1406	LI32(sp, STACKTOP) /* ã¹ã¿ãã¯åãæ¿ã */
1407	li r3, 1
1408	mtspr SPRG0, r3 /* ãã¹ãã«ã¦ã³ã¿ï¼1 */
1409
1410	/* ã«ã¼ãå
1411	ã§ä½¿ãå®æ°ãç¨æãã¦ãã */
1412	LI32(r4, reqflg) /* reqflgã®ã¢ãã¬ã¹ */
1413	li r0, 0
1414
1415	dispatcher_2:
1416	#ifdef SUPPORT_POWER_MANAGEMENT
1417	/* çé»åã¢ã¼ããããå ´å */
1418	/*
1419	* å²è¾¼ã¿è¨±å¯ã¨çé»åã¢ã¼ãã¸ã®ç§»è¡
1420	* ãã»å²è¾¼ã¿ããæ»ã£ã¦ããå¾ã«å²è¾¼ã¿ç¦æ¢ãè¡ã
1421	* ãã»r0ãr4ã®å
1422	å®¹ãç ´å£ãã¦ã¯ãªããªã
1423	*
1424	* æ³¨æ
1425	* ãå²è¾¼ã¿è¨±å¯ãã¨ãçé»åã¢ã¼ãã¸ã®ç§»è¡ããã¢ãããã¯ã«è¡ã
1426	* ãªãããã»ããµã§ã¯ãå²è¾¼ã¿ã®ã¿ã¤ãã³ã°ã«ãã£ã¦ã¯ãå²è¾¼ã¿è¨±
1427	* å¯ãã¨ãçé»åã¢ã¼ãã¸ã®ç§»è¡ãã®éã§å²è¾¼ã¿ãåãä»ãã¦ãã¾
1428	* ããæå³ããªãå½¢ã§çé»åã¢ã¼ãã«ç§»è¡ãã¦ãã¾ãã®ã§æ³¨æã
1429	* å²è¾¼ã¿ã«ãã£ã¦å®è¡å¯è½ãªã¿ã¹ã¯ãç¾ãã¦ãããã»ããµãã¹ãªã¼
1430	* ãããã¾ã¾ã§å®è¡ãããªããªããï¼å®éã«ã¯ã¿ã¤ãå²è¾¼ã¿ã«ãã
1431	* çé»åã¢ã¼ãããå¾©å¸°ããã®ã§ãã¿ã¹ã¯ãå¾
1432	ããããæéã¯æå¤§
1433	* ã§ãã¿ã¤ãå²è¾¼ã¿å¨æã§æ¼ããããããï¼
1434	*/
1435	SAVE_POWPER
1436	#else /* SUPPORT_POWER_MANAGEMENT */
1437	/* çé»åã¢ã¼ãããªãå ´å */
1438	mfmsr r5
1439	ori r6, r5, MSR_EE
1440	mtmsr r6 /* å²è¾¼ã¿è¨±å¯ */
1441	/* ããã§å²è¾¼ã¿ãå
1442	¥ã£ã¦ãæ»ã£ã¦ãã */
1443	mtmsr r5 /* å²è¾¼ã¿ç¦æ¢ */
1444	#endif /* SUPPORT_POWER_MANAGEMENT */
1445	lwz r6, 0(r4) /* r6 = reqflg */
1446	cmpwi crf0, r6, 0
1447	/* ãã£ã¹ãããè¦æ±ããªããã°ã«ã¼ãã®å
1448	é ã¸ */
1449	beq dispatcher_2
1450	stw r0, 0(r4) /* reqflgãã¯ãªã¢ */
1451	mtspr SPRG0, r0 /* ãã¹ãã«ã¦ã³ã¿ãã¯ãªã¢ */
1452	b dispatcher /* å®è¡åéçªå°ãåãåºãå¦çã¸ã¸ã£ã³ã */
1453
1454	/*
1455	*ãå²è¾¼ã¿å¾
1456	ã¡ã®ç´åã«è¡ã£ãã¹ã¿ãã¯åæ¿ã®æ»ããè¡ã£ã¦ããªããã
1457	*ããã£ã¹ãããã£ã®åºå£ã§TCBããåãåºããå¤ãã¹ã¿ãã¯ãã¤ã³
1458	*ãã¿ã«è¨å®ããã®ã§åé¡ãªãã
1459	*/
1460
1461
1462
1463	/*
1464	* å²ãè¾¼ã¿ãã³ãã©/CPUä¾å¤ãã³ãã©åºå£å¦ç
1465	*
1466	* æ»ãå
1467	ãã¿ã¹ã¯ã§reqflgãã»ããããã¦ããå ´åã®ã¿ããã«ããã
1468	* SPRG0 = 0,å²ãè¾¼ã¿ç¦æ¢ç¶æ
1469	,ã¹ã¯ã©ããã¬ã¸ã¹ã¿ãä¿åãã
1470	* ç¶æ
1471	ã§å¼ã³åºããã¨ã
1472	*
1473	* ã¾ããr10ã«runtskã®å¤ãå
1474	¥ãã¦ããret_int_1ã«ã¸ã£ã³ããããã¨
1475	*/
1476
1477	ret_int:
1478	ret_exc:
1479	LOAD_VAL32(r5, enadsp) /* r5 = enadsp */
1480	LOAD_VAL32(r10, runtsk) /* r10 = runtsk */
1481	cmpwi crf0, r5, 0
1482	beq ret_int_1 /* ãã£ã¹ãããç¦æ¢ãªãã¸ã£ã³ã */
1483
1484	LOAD_VAL32(r5, schedtsk) /* r5 = schedtsk */
1485	cmpw crf0, r5, r10
1486	beq ret_int_1 /* runtsk=schedtskãªãã¸ã£ã³ã */
1487
1488
1489	/* æ®ãã®ã¬ã¸ã¹ã¿ãä¿å */
1490
1491	subi sp, sp, GPR13_31_AREA_SIZE + FPR_AREA_SIZE
1492	/* æ±ç¨ã¬ã¸ã¹ã¿ã®å¾
1493	é¿ */
1494	STORE_R13_31 /* gpr13-31ã®å¾
1495	é¿ */
1496
1497	/* æµ®åå°æ°ç¹ã¬ã¸ã¹ã¿ã®å¾
1498	é¿ */
1499	#ifdef SUPPORT_FLOATING_POINT_REG
1500	/* ãã¼ãã¦ã§ã¢ãæµ®åå°æ°ç¹ã¬ã¸ã¹ã¿ãå®è£
1501	ãã¦ããå ´å */
1502	/* æªå®æï¼æ¬æ¥ãªã8ãã¤ãã«ã¢ã©ã¤ã¡ã³ããã */
1503	stfd f0, 0*8+GPR13_31_AREA_SIZE(sp)
1504	stfd f1, 1*8+GPR13_31_AREA_SIZE(sp)
1505	stfd f2, 2*8+GPR13_31_AREA_SIZE(sp)
1506	stfd f3, 3*8+GPR13_31_AREA_SIZE(sp)
1507	stfd f4, 4*8+GPR13_31_AREA_SIZE(sp)
1508	stfd f5, 5*8+GPR13_31_AREA_SIZE(sp)
1509	stfd f6, 6*8+GPR13_31_AREA_SIZE(sp)
1510	stfd f7, 7*8+GPR13_31_AREA_SIZE(sp)
1511	stfd f8, 8*8+GPR13_31_AREA_SIZE(sp)
1512	stfd f9, 9*8+GPR13_31_AREA_SIZE(sp)
1513	stfd f10, 10*8+GPR13_31_AREA_SIZE(sp)
1514	stfd f11, 11*8+GPR13_31_AREA_SIZE(sp)
1515	stfd f12, 12*8+GPR13_31_AREA_SIZE(sp)
1516	stfd f13, 13*8+GPR13_31_AREA_SIZE(sp)
1517	stfd f14, 14*8+GPR13_31_AREA_SIZE(sp)
1518	stfd f15, 15*8+GPR13_31_AREA_SIZE(sp)
1519	stfd f16, 16*8+GPR13_31_AREA_SIZE(sp)
1520	stfd f17, 17*8+GPR13_31_AREA_SIZE(sp)
1521	stfd f18, 18*8+GPR13_31_AREA_SIZE(sp)
1522	stfd f19, 19*8+GPR13_31_AREA_SIZE(sp)
1523	stfd f20, 20*8+GPR13_31_AREA_SIZE(sp)
1524	stfd f21, 21*8+GPR13_31_AREA_SIZE(sp)
1525	stfd f22, 22*8+GPR13_31_AREA_SIZE(sp)
1526	stfd f23, 23*8+GPR13_31_AREA_SIZE(sp)
1527	stfd f24, 24*8+GPR13_31_AREA_SIZE(sp)
1528	stfd f25, 25*8+GPR13_31_AREA_SIZE(sp)
1529	stfd f26, 26*8+GPR13_31_AREA_SIZE(sp)
1530	stfd f27, 27*8+GPR13_31_AREA_SIZE(sp)
1531	stfd f28, 28*8+GPR13_31_AREA_SIZE(sp)
1532	stfd f29, 29*8+GPR13_31_AREA_SIZE(sp)
1533	stfd f30, 30*8+GPR13_31_AREA_SIZE(sp)
1534	stfd f31, 31*8+GPR13_31_AREA_SIZE(sp)
1535	/*
1536	* FPSCRã®å¾
1537	é¿
1538	*
1539	*ããã¹ã¿ãã¯ã8ãã¤ãä½¿ç¨ããã®ã¯ç¡é§ã§ãããã
1540	*ããstfiwxå½ä»¤ã¯ãªãã·ã§ã³ãªã®ã§é¸æããªãã£ãã
1541	*ããï¼ã¾ããå¯¾å¿ãããã¼ãå½ä»¤ããªãã®ãåé¡ï¼
1542	*
1543	*/
1544	mffs f0 /* f0ã®ä¸ä½2ãã¤ãâFPSCR */
1545	/* @(sp+ãªãã»ãã)âf0 */
1546	stfd f0, GPR13_31_AREA_SIZE+FPR0_13_AREA_SIZE-8(sp)
1547	#endif /* SUPPORT_FLOATING_POINT_REG */
1548
1549	LI32(r5, ret_int_r)
1550	/* r10 = runtskã§ããã«æ¥ã */
1551	stw sp, TCB_sp(r10) /* runtsk->sp = sp */
1552	/* ã¿ã¹ã¯ã¹ã¿ãã¯ãã¤ã³ã¿ã®ä¿å */
1553	stw r5, TCB_pc(r10) /* runtsk->pc = ret_int_r */
1554	/* ï¼å®è¡åéçªå°ã®ä¿åï¼ */
1555
1556	b dispatcher /* ãã£ã¹ãããã£å¼ã³åºã */
1557
1558
1559	/* å²è¾¼ã¿ï¼ä¾å¤ã®åºå£å¦çã®å¾åé¨å
1560	* ret_intãã
1561	* ãã»ç´æ¥ãret_int_1ã«åæµããå ´å
1562	* ãã»ãã£ã¹ãããã£ãçµç±ãã¦ãã£ã¦æ¥ãå ´å
1563	* ãã®2éããã
1564	* ããããã®å ´åãr10ã«runtskãå
1565	¥ã£ã¦ãã
1566	*/
1567	ret_int_r:
1568
1569	#ifdef SUPPORT_FLOATING_POINT_REG
1570	/* ãã¼ãã¦ã§ã¢ãæµ®åå°æ°ç¹ã¬ã¸ã¹ã¿ãå®è£
1571	ãã¦ããå ´å */
1572
1573	/* FPSCRã®å¾©å
1574	*/
1575	lfd f0, GPR13_31_AREA_SIZE+FPR0_13_AREA_SIZE-8(sp)
1576	mtfsf 0xf,f0 /* FPSCRâf0ã®ä¸ä½2ãã¤ã */
1577
1578	/* æµ®åå°æ°ç¹ã¬ã¸ã¹ã¿ã®å¾©å
1579	*/
1580	lfd f0, 0*8+GPR13_31_AREA_SIZE(sp)
1581	lfd f1, 1*8+GPR13_31_AREA_SIZE(sp)
1582	lfd f2, 2*8+GPR13_31_AREA_SIZE(sp)
1583	lfd f3, 3*8+GPR13_31_AREA_SIZE(sp)
1584	lfd f4, 4*8+GPR13_31_AREA_SIZE(sp)
1585	lfd f5, 5*8+GPR13_31_AREA_SIZE(sp)
1586	lfd f6, 6*8+GPR13_31_AREA_SIZE(sp)
1587	lfd f7, 7*8+GPR13_31_AREA_SIZE(sp)
1588	lfd f8, 8*8+GPR13_31_AREA_SIZE(sp)
1589	lfd f9, 9*8+GPR13_31_AREA_SIZE(sp)
1590	lfd f10, 10*8+GPR13_31_AREA_SIZE(sp)
1591	lfd f11, 11*8+GPR13_31_AREA_SIZE(sp)
1592	lfd f12, 12*8+GPR13_31_AREA_SIZE(sp)
1593	lfd f13, 13*8+GPR13_31_AREA_SIZE(sp)
1594	lfd f14, 14*8+GPR13_31_AREA_SIZE(sp)
1595	lfd f15, 15*8+GPR13_31_AREA_SIZE(sp)
1596	lfd f16, 16*8+GPR13_31_AREA_SIZE(sp)
1597	lfd f17, 17*8+GPR13_31_AREA_SIZE(sp)
1598	lfd f18, 18*8+GPR13_31_AREA_SIZE(sp)
1599	lfd f19, 19*8+GPR13_31_AREA_SIZE(sp)
1600	lfd f20, 20*8+GPR13_31_AREA_SIZE(sp)
1601	lfd f21, 21*8+GPR13_31_AREA_SIZE(sp)
1602	lfd f22, 22*8+GPR13_31_AREA_SIZE(sp)
1603	lfd f23, 23*8+GPR13_31_AREA_SIZE(sp)
1604	lfd f24, 24*8+GPR13_31_AREA_SIZE(sp)
1605	lfd f25, 25*8+GPR13_31_AREA_SIZE(sp)
1606	lfd f26, 26*8+GPR13_31_AREA_SIZE(sp)
1607	lfd f27, 27*8+GPR13_31_AREA_SIZE(sp)
1608	lfd f28, 28*8+GPR13_31_AREA_SIZE(sp)
1609	lfd f29, 29*8+GPR13_31_AREA_SIZE(sp)
1610	lfd f30, 30*8+GPR13_31_AREA_SIZE(sp)
1611	lfd f31, 31*8+GPR13_31_AREA_SIZE(sp)
1612	#endif /* SUPPORT_FLOATING_POINT_REG */
1613
1614	/* æ±ç¨ã¬ã¸ã¹ã¿ã®å¾©å
1615	*/
1616	LOAD_R13_31 /* gpr13-31ã®å¾©å
1617	*/
1618	addi sp, sp, GPR13_31_AREA_SIZE + FPR_AREA_SIZE
1619
1620	/* ãã£ã¹ãããã£ãçµç±ããªãå ´åã¯ããããåæµ */
1621	/* ï¼r10ã«runtskãå
1622	¥ã£ãç¶æ
1623	ã§ããã«æ¥ãï¼ */
1624	ret_int_1:
1625	/* ã¿ã¹ã¯ä¾å¤å¦çè¦æ±ã®ãã§ãã¯ */
1626	/* r10 = runtsk */
1627	lbz r4, TCB_enatex(r10)
1628	/*
1629	* ãã¹ã¯ãã¼ã¿ã®ãããå¹
1630	ã¨ã¨ã³ãã£ã¢ã³ã¯makeoffset.cã®
1631	* BIT_BBããã³BIT_LBã§æå®ãã¦ãã
1632	*/
1633	andi. r5, r4, TCB_enatex_mask /* r5 = runtsk->enatex */
1634	/* çµæãã¼ããªãã°ãEQãã©ã°ãã»ããããã */
1635	beq ret_int_2 /* ã¿ã¹ã¯ä¾å¤å¦çç¦æ¢ãªãã¸ã£ã³ã */
1636	lwz r6, TCB_texptn(r10) /* r6 = runtsk->texptn */
1637	/* ã¿ã¹ã¯ä¾å¤è¦æ±ããªããã°ãªãã¸ã£ã³ã */
1638	cmpwi crf0, r6, 0
1639	beq ret_int_2
1640
1641	/*
1642	* ã³ã¼ãªã³ã°ã»ã³ã³ãã³ã·ã§ã³ã«åããã¦ãã¹ã¿ãã¯ãã¤ã³ã¿ã
1643	*ã8ãã¤ããããã¦ããã
1644	*ã
1645	* -8 ----------------------
1646	* \| \|
1647	* -4 ----------------------ã
1648	* \| \|âcall_texrtn()ã®å¼ã³åºãã«ãã
1649	* spâ ---------------------- æ¸ãè¾¼ã¾ãã
1650	*
1651	*/
1652	subi sp, sp, STACK_MARGIN
1653
1654	bl call_texrtn /* ã¿ã¹ã¯ä¾å¤å¦çã«ã¼ãã³å¼ã³åºã */
1655	/* ã¹ã¿ãã¯ãã¤ã³ã¿ãå
1656	ã«æ»ãï¼ä¸è¨åç
1657	§ï¼ */
1658	addi sp, sp, STACK_MARGIN
1659	/*
1660	*ãæ³¨æ
1661	ãã*ããã¿ã¹ã¯ä¾å¤å¦çã«ã¼ãã³å
1662	ã§æµ®åå°æ°ç¹ã¬ã¸ã¹ã¿ãä½¿ç¨ãã
1663	ãã*ããå ´åã¯ãã¿ã¹ã¯ä¾å¤å¦çã«ã¼ãã³å´ã§æµ®åå°æ°ç¹ã¬ã¸ã¹ã¿ã®
1664	ãã*ããå¾
1665	é¿ï¼å¾©å
1666	ãè¡ããã¨ã
1667	*/
1668
1669	ret_int_2:
1670	/*
1671	*ãcall_texrtn()ããããã«æ»ã£ã¦æ¥ãã(ä¸è¨addiå½ä»¤ãçµç±ï¼
1672	*ãï¼call_texrtn()ãå¼ã°ãªãå ´åã¯ç´æ¥ããã«æ¥ãï¼
1673	*
1674	ãã*ããçµæçã«ret_to_task_intã¨åãå¦çã«ãªã£ããã
1675	ãã*ããç¡çã«ã¾ã¨ããã¨å¯èªæ§ãæªããªãã®ã§
1676	ãã*ããå¥ã
1677	ã®ã¾ã¾ã«ãã¦ããã
1678	*/
1679	LOAD_R0_12_SPRG /* gpr0-1,3-12, ç¹æ®ã¬ã¸ã¹ã¿ã®å¾©å
1680	*/
1681	addi sp, sp, GPR0_12_SPRG_AREA_SIZE
1682	/*
1683	* rfiå½ä»¤ã¯åæå½ä»¤ãªã®ã§ãä¸è¨ã®ã¬ã¸ã¹ã¿ã®å¾©å¸°ã¨spã®å ç®ãçµäºãã¦
1684	* ããå
1685	ã®ã³ã³ããã¹ãã«æ»ãã
1686	* spã®å ç®ã ããå
1687	ã«æ¸ãã§å²è¾¼ã¿è¨±å¯ã«ãªãå¿é
1688	ã¯ãªãã
1689	*/
1690	rfi /* å²è¾¼ã¿å
1691	ã¸å¾©å¸° */
1692
1693
1694
1695
1696	/*
1697	* ã¿ã¹ã¯èµ·åå¦ç
1698	* ããã£ã¹ãããã£ããå¼ã³åºãããã®ã§ãr10ã«ã¯runtskãå
1699	¥ã£ã¦ãã
1700	* ãã¹ã¿ãã¯ãã¤ã³ã¿ãè¨å®æ¸ã¿
1701	*/
1702
1703	.globl activate_r
1704	activate_r:
1705	/* r10 = runtsk (ãã£ã¹ãããã£ã§è¨å®) */
1706	lwz r4, TCB_tinib(r10) /* r4 = runtsk->tinib */
1707
1708	/* ã¿ã¹ã¯èµ·åçªå°ã®è¨å® */
1709	lwz r5, TINIB_task(r4)
1710	mtctr r5 /* CTR = runtsk->tinib->task */
1711
1712	/* ã¿ã¹ã¯ã¸ã®å¼æ°ï¼æ¡å¼µæ
1713	å ±ï¼ */
1714	lwz r3, TINIB_exinf(r4) /* r3 = runtsk->tinib->TINIB_exinf */
1715
1716	/*
1717	* LRã¬ã¸ã¹ã¿ã«ext_tskãè¨å®ãããã¨ã«ãããext_tskã
1718	* å¼ã°ãªãã§ã¿ã¹ã¯ã®é¢æ°ãæããå ´åãext_tskã«åå²ããã
1719	*/
1720	LI32(r6, ext_tsk)
1721	mtspr LR, r6 /* ã¿ã¹ã¯ããã®æ»ãçªå°ãè¨å® */
1722
1723	mfmsr r8
1724	ori r9, r8, MSR_EE
1725	mtmsr r9 /* å²è¾¼ã¿è¨±å¯ */
1726
1727	bctr /* Cè¨èªã«ã¼ãã³å¼ã³åºã */
1728
1729
1730	/*
1731	* å¾®å°æéå¾
1732	ã¡
1733	*ããå¼æ°r3ï¼å¾
1734	ã¡æéãnsecåä½ã§æå®ãã
1735	*/
1736	.globl sil_dly_nse
1737	sil_dly_nse:
1738	LI32(r4, SIL_DLY_TIM1)
1739	sub. r3, r3, r4 /* r3 ããSIL_DLY_TIM1ãå¼ã */
1740	blelr /* çµæã0ä»¥ä¸ãªããªã¿ã¼ã³ */
1741
1742	LI32(r5, SIL_DLY_TIM2)
1743	sil_dly_nse_1:
1744	sub. r3, r3, r5 /* r3 ããSIL_DLY_TIM2ãå¼ã */
1745	bgt sil_dly_nse_1 /* çµæã 0 ããå¤§ãããã°ã«ã¼ã */
1746	blr
1747
1748	/* end of file */

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