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vectors.S @ 545f7786

4.104.114.84.95

Last change on this file since 545f7786 was 545f7786, checked in by Ralf Corsepius <ralf.corsepius@…>, on 02/09/05 at 15:14:57

2005-02-09 Ralf Corsepius <ralf.corsepius@…>

ppc403/vectors/vectors.S: Remove XCOFF support.

Property mode set to 100644

File size: 6.6 KB

Line
1	/* vectors.s 1.1 - 95/12/04
2	*
3	* This file contains the assembly code for the PowerPC 403
4	* interrupt veneers for RTEMS.
5	*
6	* Author: Andrew Bray <andy@i-cubed.co.uk>
7	*
8	* COPYRIGHT (c) 1995 by i-cubed ltd.
9	*
10	* To anyone who acknowledges that this file is provided "AS IS"
11	* without any express or implied warranty:
12	* permission to use, copy, modify, and distribute this file
13	* for any purpose is hereby granted without fee, provided that
14	* the above copyright notice and this notice appears in all
15	* copies, and that the name of i-cubed limited not be used in
16	* advertising or publicity pertaining to distribution of the
17	* software without specific, written prior permission.
18	* i-cubed limited makes no representations about the suitability
19	* of this software for any purpose.
20	*
21	*/
22
23	/*
24	* The issue with this file is getting it loaded at the right place.
25	* The first vector MUST be at address 0x????0100.
26	* How this is achieved is dependant on the tool chain.
27	*
28	* However the basic mechanism for ELF assemblers is to create a
29	* section called ".vectors", which will be loaded to an address
30	* between 0x????0000 and 0x????0100 (inclusive) via a link script.
31	*
32	* The variable 'PPC_VECTOR_FILE_BASE' must be defined to be the
33	* offset from 0x????0000 to the first location in the file. This
34	* will usually be 0x0000 or 0x0100.
35	*
36	* $Id$
37	*/
38
39	#include <bsp.h> /* PPC_VECTOR_FILE_BASE */
40	#include <rtems/asm.h>
41
42	#ifndef PPC_VECTOR_FILE_BASE
43	#error "PPC_VECTOR_FILE_BASE is not defined."
44	#endif
45
46	/* Where this file will be loaded */
47	.set file_base, PPC_VECTOR_FILE_BASE
48
49	/* Offset to store reg 0 */
50
51	.set IP_LINK, 0
52	#if (PPC_ABI == PPC_ABI_POWEROPEN \|\| PPC_ABI == PPC_ABI_GCC27)
53	.set IP_0, (IP_LINK + 56)
54	#else
55	.set IP_0, (IP_LINK + 8)
56	#endif
57	.set IP_2, (IP_0 + 4)
58
59	.set IP_3, (IP_2 + 4)
60	.set IP_4, (IP_3 + 4)
61	.set IP_5, (IP_4 + 4)
62	.set IP_6, (IP_5 + 4)
63
64	.set IP_7, (IP_6 + 4)
65	.set IP_8, (IP_7 + 4)
66	.set IP_9, (IP_8 + 4)
67	.set IP_10, (IP_9 + 4)
68
69	.set IP_11, (IP_10 + 4)
70	.set IP_12, (IP_11 + 4)
71	.set IP_13, (IP_12 + 4)
72	.set IP_28, (IP_13 + 4)
73
74	.set IP_29, (IP_28 + 4)
75	.set IP_30, (IP_29 + 4)
76	.set IP_31, (IP_30 + 4)
77	.set IP_CR, (IP_31 + 4)
78
79	.set IP_CTR, (IP_CR + 4)
80	.set IP_XER, (IP_CTR + 4)
81	.set IP_LR, (IP_XER + 4)
82	.set IP_PC, (IP_LR + 4)
83
84	.set IP_MSR, (IP_PC + 4)
85
86	.set IP_END, (IP_MSR + 16)
87
88	/* Vector offsets */
89	.set begin_vector,0x0000
90	.set crit_vector,0x0100
91	.set mach_vector,0x0200
92	.set prot_vector,0x0300
93	.set ext_vector,0x0500
94	.set align_vector,0x0600
95	.set prog_vector,0x0700
96	.set dec_vector,0x0900
97	.set sys_vector,0x0C00
98	.set pit_vector,0x1000
99	.set fit_vector,0x1010
100	.set wadt_vector,0x1020
101	.set debug_vector,0x2000
102
103	/* Go to the right section */
104	#if PPC_ASM == PPC_ASM_ELF
105	.section .vectors,"awx",@progbits
106	#endif
107
108	PUBLIC_VAR (__vectors)
109	SYM (__vectors):
110
111	/* Critical error handling */
112	.org crit_vector - file_base
113	#if (PPC_ABI == PPC_ABI_POWEROPEN \|\| PPC_ABI == PPC_ABI_GCC27)
114	#if (PPC_HAS_FPU)
115	stwu r1, -(204 + 188 + IP_END)(r1)
116	#else
117	stwu r1, -(20*4 + IP_END)(r1)
118	#endif
119	#else
120	stwu r1, -(IP_END)(r1)
121	#endif
122	stw r0, IP_0(r1)
123
124	li r0, PPC_IRQ_CRIT
125	b PROC (_ISR_HandlerC)
126
127	/* Machine check exception */
128	.org mach_vector - file_base
129	#if (PPC_ABI == PPC_ABI_POWEROPEN \|\| PPC_ABI == PPC_ABI_GCC27)
130	#if (PPC_HAS_FPU)
131	stwu r1, -(204 + 188 + IP_END)(r1)
132	#else
133	stwu r1, -(20*4 + IP_END)(r1)
134	#endif
135	#else
136	stwu r1, -(IP_END)(r1)
137	#endif
138	stw r0, IP_0(r1)
139
140	li r0, PPC_IRQ_MCHECK
141	b PROC (_ISR_HandlerC)
142
143	/* Protection exception */
144	.org prot_vector - file_base
145	#if (PPC_ABI == PPC_ABI_POWEROPEN \|\| PPC_ABI == PPC_ABI_GCC27)
146	#if (PPC_HAS_FPU)
147	stwu r1, -(204 + 188 + IP_END)(r1)
148	#else
149	stwu r1, -(20*4 + IP_END)(r1)
150	#endif
151	#else
152	stwu r1, -(IP_END)(r1)
153	#endif
154	stw r0, IP_0(r1)
155
156	li r0, PPC_IRQ_PROTECT
157	b PROC (_ISR_Handler)
158
159	/* External interrupt */
160	.org ext_vector - file_base
161	#if (PPC_ABI == PPC_ABI_POWEROPEN \|\| PPC_ABI == PPC_ABI_GCC27)
162	#if (PPC_HAS_FPU)
163	stwu r1, -(204 + 188 + IP_END)(r1)
164	#else
165	stwu r1, -(20*4 + IP_END)(r1)
166	#endif
167	#else
168	stwu r1, -(IP_END)(r1)
169	#endif
170	stw r0, IP_0(r1)
171
172	li r0, PPC_IRQ_EXTERNAL
173	b PROC (_ISR_Handler)
174
175	/* Align exception */
176	.org align_vector - file_base
177	.extern align_h
178	b align_h
179
180	/* Program exception */
181	.org prog_vector - file_base
182	#if (PPC_ABI == PPC_ABI_POWEROPEN \|\| PPC_ABI == PPC_ABI_GCC27)
183	#if (PPC_HAS_FPU)
184	stwu r1, -(204 + 188 + IP_END)(r1)
185	#else
186	stwu r1, -(20*4 + IP_END)(r1)
187	#endif
188	#else
189	stwu r1, -(IP_END)(r1)
190	#endif
191	stw r0, IP_0(r1)
192
193	li r0, PPC_IRQ_PROGRAM
194	b PROC (_ISR_Handler)
195
196	/* Decrementer exception */
197	.org dec_vector - file_base
198	#if (PPC_ABI == PPC_ABI_POWEROPEN \|\| PPC_ABI == PPC_ABI_GCC27)
199	#if (PPC_HAS_FPU)
200	stwu r1, -(204 + 188 + IP_END)(r1)
201	#else
202	stwu r1, -(20*4 + IP_END)(r1)
203	#endif
204	#else
205	stwu r1, -(IP_END)(r1)
206	#endif
207	stw r0, IP_0(r1)
208
209	li r0, PPC_IRQ_PROGRAM
210	b PROC (_ISR_Handler)
211
212	/* System call */
213	.org sys_vector - file_base
214	#if (PPC_ABI == PPC_ABI_POWEROPEN \|\| PPC_ABI == PPC_ABI_GCC27)
215	#if (PPC_HAS_FPU)
216	stwu r1, -(204 + 188 + IP_END)(r1)
217	#else
218	stwu r1, -(20*4 + IP_END)(r1)
219	#endif
220	#else
221	stwu r1, -(IP_END)(r1)
222	#endif
223	stw r0, IP_0(r1)
224
225	li r0, PPC_IRQ_SCALL
226	b PROC (_ISR_Handler)
227
228	/* PIT interrupt */
229	.org pit_vector - file_base
230	#if (PPC_ABI == PPC_ABI_POWEROPEN \|\| PPC_ABI == PPC_ABI_GCC27)
231	#if (PPC_HAS_FPU)
232	stwu r1, -(204 + 188 + IP_END)(r1)
233	#else
234	stwu r1, -(20*4 + IP_END)(r1)
235	#endif
236	#else
237	stwu r1, -(IP_END)(r1)
238	#endif
239	stw r0, IP_0(r1)
240
241	li r0, PPC_IRQ_PIT
242	b PROC (_ISR_Handler)
243
244	/* FIT interrupt */
245	.org fit_vector - file_base
246	#if (PPC_ABI == PPC_ABI_POWEROPEN \|\| PPC_ABI == PPC_ABI_GCC27)
247	#if (PPC_HAS_FPU)
248	stwu r1, -(204 + 188 + IP_END)(r1)
249	#else
250	stwu r1, -(20*4 + IP_END)(r1)
251	#endif
252	#else
253	stwu r1, -(IP_END)(r1)
254	#endif
255	stw r0, IP_0(r1)
256
257	li r0, PPC_IRQ_FIT
258	b PROC (_ISR_Handler)
259
260	/* Watchdog interrupt */
261	.org wadt_vector - file_base
262	#if (PPC_ABI == PPC_ABI_POWEROPEN \|\| PPC_ABI == PPC_ABI_GCC27)
263	#if (PPC_HAS_FPU)
264	stwu r1, -(204 + 188 + IP_END)(r1)
265	#else
266	stwu r1, -(20*4 + IP_END)(r1)
267	#endif
268	#else
269	stwu r1, -(IP_END)(r1)
270	#endif
271	stw r0, IP_0(r1)
272
273	li r0, PPC_IRQ_WATCHDOG
274	b PROC (_ISR_HandlerC)
275
276	/* Debug exception */
277	debug:
278	#if (PPC_ABI == PPC_ABI_POWEROPEN \|\| PPC_ABI == PPC_ABI_GCC27)
279	#if (PPC_HAS_FPU)
280	stwu r1, -(204 + 188 + IP_END)(r1)
281	#else
282	stwu r1, -(20*4 + IP_END)(r1)
283	#endif
284	#else
285	stwu r1, -(IP_END)(r1)
286	#endif
287	stw r0, IP_0(r1)
288
289	li r0, PPC_IRQ_DEBUG
290	b PROC (_ISR_HandlerC)
291
292	/* Debug exception */
293	.org debug_vector - file_base
294	b debug

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