1 /* Intrinsic definitions of Andes NDS32 cpu for GNU compiler
2 Copyright (C) 2012-2023 Free Software Foundation, Inc.
3 Contributed by Andes Technology Corporation.
4
5 This file is part of GCC.
6
7 GCC is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published
9 by the Free Software Foundation; either version 3, or (at your
10 option) any later version.
11
12 GCC is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 License for more details.
16
17 Under Section 7 of GPL version 3, you are granted additional
18 permissions described in the GCC Runtime Library Exception, version
19 3.1, as published by the Free Software Foundation.
20
21 You should have received a copy of the GNU General Public License and
22 a copy of the GCC Runtime Library Exception along with this program;
23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24 <http://www.gnu.org/licenses/>. */
25
26 #ifndef _NDS32_ISR_H
27 #define _NDS32_ISR_H
28
29 /* Attribute of a interrupt or exception handler:
30
31 NDS32_READY_NESTED: This handler is interruptible if user re-enable GIE bit.
32 NDS32_NESTED : This handler is interruptible. This is not suitable
33 exception handler.
34 NDS32_NOT_NESTED : This handler is NOT interruptible. Users have to do
35 some work if nested is wanted
36 NDS32_CRITICAL : This handler is critical ISR, which means it is small
37 and efficient. */
38 #define NDS32_READY_NESTED 0
39 #define NDS32_NESTED 1
40 #define NDS32_NOT_NESTED 2
41 #define NDS32_CRITICAL 3
42
43 /* Attribute of a interrupt or exception handler:
44
45 NDS32_SAVE_ALL_REGS : Save all registers in a table.
46 NDS32_SAVE_PARTIAL_REGS: Save partial registers. */
47 #define NDS32_SAVE_CALLER_REGS 0
48 #define NDS32_SAVE_ALL_REGS 1
49
50 /* There are two version of Register table for interrupt and exception handler,
51 one for 16-register CPU the other for 32-register CPU. These structures are
52 used for context switching or system call handling. The address of this
53 data can be get from the input argument of the handler functions.
54
55 For system call handling, r0 to r5 are used to pass arguments. If more
56 arguments are used they are put into the stack and its starting address is
57 in sp. Return value of system call can be put into r0 and r1 upon exit from
58 system call handler. System call ID is in a system register and it can be
59 fetched via intrinsic function. For more information please read ABI and
60 other related documents.
61
62 For context switching, at least 2 values need to saved in kernel. One is
63 IPC and the other is the stack address of current task. Use intrinsic
64 function to get IPC and the input argument of the handler functions + 8 to
65 get stack address of current task. To do context switching, you replace
66 new_sp with the stack address of new task and replace IPC system register
67 with IPC of new task, then, just return from handler. The context switching
68 will happen. */
69
70 /* Register table for exception handler; 32-register version. */
71 typedef struct
72 {
73 int r0;
74 int r1;
75 int r2;
76 int r3;
77 int r4;
78 int r5;
79 int r6;
80 int r7;
81 int r8;
82 int r9;
83 int r10;
84 int r11;
85 int r12;
86 int r13;
87 int r14;
88 int r15;
89 int r16;
90 int r17;
91 int r18;
92 int r19;
93 int r20;
94 int r21;
95 int r22;
96 int r23;
97 int r24;
98 int r25;
99 int r26;
100 int r27;
101 int fp;
102 int gp;
103 int lp;
104 int sp;
105 } NDS32_GPR32;
106
107 /* Register table for exception handler; 16-register version. */
108 typedef struct
109 {
110 int r0;
111 int r1;
112 int r2;
113 int r3;
114 int r4;
115 int r5;
116 int r6;
117 int r7;
118 int r8;
119 int r9;
120 int r10;
121 int r15;
122 int fp;
123 int gp;
124 int lp;
125 int sp;
126 } NDS32_GPR16;
127
128
129 /* Use NDS32_REG32_TAB or NDS32_REG16_TAB in your program to
130 access register table. */
131 typedef struct
132 {
133 union
134 {
135 int reg_a[32] ;
136 NDS32_GPR32 reg_s ;
137 } u ;
138 } NDS32_REG32_TAB;
139
140 typedef struct
141 {
142 union
143 {
144 int reg_a[16] ;
145 NDS32_GPR16 reg_s ;
146 } u ;
147 } NDS32_REG16_TAB;
148
149 typedef struct
150 {
151 int d0lo;
152 int d0hi;
153 int d1lo;
154 int d1hi;
155 } NDS32_DX_TAB;
156
157 typedef struct
158 {
159 #ifdef __NDS32_EB__
160 float fsr0;
161 float fsr1;
162 float fsr2;
163 float fsr3;
164 float fsr4;
165 float fsr5;
166 float fsr6;
167 float fsr7;
168 #else
169 float fsr1;
170 float fsr0;
171 float fsr3;
172 float fsr2;
173 float fsr5;
174 float fsr4;
175 float fsr7;
176 float fsr6;
177 #endif
178 } NDS32_FSR8;
179
180 typedef struct
181 {
182 double dsr0;
183 double dsr1;
184 double dsr2;
185 double dsr3;
186 } NDS32_DSR4;
187
188 typedef struct
189 {
190 #ifdef __NDS32_EB__
191 float fsr0;
192 float fsr1;
193 float fsr2;
194 float fsr3;
195 float fsr4;
196 float fsr5;
197 float fsr6;
198 float fsr7;
199 float fsr8;
200 float fsr9;
201 float fsr10;
202 float fsr11;
203 float fsr12;
204 float fsr13;
205 float fsr14;
206 float fsr15;
207 #else
208 float fsr1;
209 float fsr0;
210 float fsr3;
211 float fsr2;
212 float fsr5;
213 float fsr4;
214 float fsr7;
215 float fsr6;
216 float fsr9;
217 float fsr8;
218 float fsr11;
219 float fsr10;
220 float fsr13;
221 float fsr12;
222 float fsr15;
223 float fsr14;
224 #endif
225 } NDS32_FSR16;
226
227 typedef struct
228 {
229 double dsr0;
230 double dsr1;
231 double dsr2;
232 double dsr3;
233 double dsr4;
234 double dsr5;
235 double dsr6;
236 double dsr7;
237 } NDS32_DSR8;
238
239 typedef struct
240 {
241 #ifdef __NDS32_EB__
242 float fsr0;
243 float fsr1;
244 float fsr2;
245 float fsr3;
246 float fsr4;
247 float fsr5;
248 float fsr6;
249 float fsr7;
250 float fsr8;
251 float fsr9;
252 float fsr10;
253 float fsr11;
254 float fsr12;
255 float fsr13;
256 float fsr14;
257 float fsr15;
258 float fsr16;
259 float fsr17;
260 float fsr18;
261 float fsr19;
262 float fsr20;
263 float fsr21;
264 float fsr22;
265 float fsr23;
266 float fsr24;
267 float fsr25;
268 float fsr26;
269 float fsr27;
270 float fsr28;
271 float fsr29;
272 float fsr30;
273 float fsr31;
274 #else
275 float fsr1;
276 float fsr0;
277 float fsr3;
278 float fsr2;
279 float fsr5;
280 float fsr4;
281 float fsr7;
282 float fsr6;
283 float fsr9;
284 float fsr8;
285 float fsr11;
286 float fsr10;
287 float fsr13;
288 float fsr12;
289 float fsr15;
290 float fsr14;
291 float fsr17;
292 float fsr16;
293 float fsr19;
294 float fsr18;
295 float fsr21;
296 float fsr20;
297 float fsr23;
298 float fsr22;
299 float fsr25;
300 float fsr24;
301 float fsr27;
302 float fsr26;
303 float fsr29;
304 float fsr28;
305 float fsr31;
306 float fsr30;
307 #endif
308 } NDS32_FSR32;
309
310 typedef struct
311 {
312 double dsr0;
313 double dsr1;
314 double dsr2;
315 double dsr3;
316 double dsr4;
317 double dsr5;
318 double dsr6;
319 double dsr7;
320 double dsr8;
321 double dsr9;
322 double dsr10;
323 double dsr11;
324 double dsr12;
325 double dsr13;
326 double dsr14;
327 double dsr15;
328 } NDS32_DSR16;
329
330 typedef struct
331 {
332 double dsr0;
333 double dsr1;
334 double dsr2;
335 double dsr3;
336 double dsr4;
337 double dsr5;
338 double dsr6;
339 double dsr7;
340 double dsr8;
341 double dsr9;
342 double dsr10;
343 double dsr11;
344 double dsr12;
345 double dsr13;
346 double dsr14;
347 double dsr15;
348 double dsr16;
349 double dsr17;
350 double dsr18;
351 double dsr19;
352 double dsr20;
353 double dsr21;
354 double dsr22;
355 double dsr23;
356 double dsr24;
357 double dsr25;
358 double dsr26;
359 double dsr27;
360 double dsr28;
361 double dsr29;
362 double dsr30;
363 double dsr31;
364 } NDS32_DSR32;
365
366 typedef struct
367 {
368 union
369 {
370 NDS32_FSR8 fsr_s ;
371 NDS32_DSR4 dsr_s ;
372 } u ;
373 } NDS32_FPU8_TAB;
374
375 typedef struct
376 {
377 union
378 {
379 NDS32_FSR16 fsr_s ;
380 NDS32_DSR8 dsr_s ;
381 } u ;
382 } NDS32_FPU16_TAB;
383
384 typedef struct
385 {
386 union
387 {
388 NDS32_FSR32 fsr_s ;
389 NDS32_DSR16 dsr_s ;
390 } u ;
391 } NDS32_FPU32_TAB;
392
393 typedef struct
394 {
395 union
396 {
397 NDS32_FSR32 fsr_s ;
398 NDS32_DSR32 dsr_s ;
399 } u ;
400 } NDS32_FPU64_TAB;
401
402 typedef struct
403 {
404 int ipc;
405 int ipsw;
406 #if defined(NDS32_EXT_FPU_CONFIG_0)
407 NDS32_FPU8_TAB fpr;
408 #elif defined(NDS32_EXT_FPU_CONFIG_1)
409 NDS32_FPU16_TAB fpr;
410 #elif defined(NDS32_EXT_FPU_CONFIG_2)
411 NDS32_FPU32_TAB fpr;
412 #elif defined(NDS32_EXT_FPU_CONFIG_3)
413 NDS32_FPU64_TAB fpr;
414 #endif
415 #if __NDS32_DX_REGS__
416 NDS32_DX_TAB dxr;
417 #endif
418 #if __NDS32_EXT_IFC__
419 int ifc_lp;
420 int filler;
421 #endif
422 #if __NDS32_REDUCED_REGS__ || __NDS32_REDUCE_REGS
423 NDS32_REG16_TAB gpr;
424 #else
425 NDS32_REG32_TAB gpr;
426 #endif
427 } NDS32_CONTEXT;
428
429 /* Predefined Vector Definition.
430
431 For IVIC Mode: 9 to 14 are for hardware interrupt
432 and 15 is for software interrupt.
433 For EVIC Mode: 9 to 72 are for hardware interrupt
434 and software interrupt can be routed to any one of them.
435
436 You may want to define your hardware interrupts in the following way
437 for easy maintainance.
438
439 IVIC mode:
440 #define MY_HW_IVIC_TIMER NDS32_VECTOR_INTERRUPT_HW0 + 1
441 #define MY_HW_IVIC_USB NDS32_VECTOR_INTERRUPT_HW0 + 3
442 EVIC mode:
443 #define MY_HW_EVIC_DMA NDS32_VECTOR_INTERRUPT_HW0 + 2
444 #define MY_HW_EVIC_SWI NDS32_VECTOR_INTERRUPT_HW0 + 10 */
445 #define NDS32_VECTOR_RESET 0
446 #define NDS32_VECTOR_TLB_FILL 1
447 #define NDS32_VECTOR_PTE_NOT_PRESENT 2
448 #define NDS32_VECTOR_TLB_MISC 3
449 #define NDS32_VECTOR_TLB_VLPT_MISS 4
450 #define NDS32_VECTOR_MACHINE_ERROR 5
451 #define NDS32_VECTOR_DEBUG_RELATED 6
452 #define NDS32_VECTOR_GENERAL_EXCEPTION 7
453 #define NDS32_VECTOR_SYSCALL 8
454 #define NDS32_VECTOR_INTERRUPT_HW0 9
455 #define NDS32_VECTOR_INTERRUPT_HW1 10
456 #define NDS32_VECTOR_INTERRUPT_HW2 11
457 #define NDS32_VECTOR_INTERRUPT_HW3 12
458 #define NDS32_VECTOR_INTERRUPT_HW4 13
459 #define NDS32_VECTOR_INTERRUPT_HW5 14
460 #define NDS32_VECTOR_INTERRUPT_HW6 15
461 #define NDS32_VECTOR_SWI 15 /* THIS IS FOR IVIC MODE ONLY */
462 #define NDS32_VECTOR_INTERRUPT_HW7 16
463 #define NDS32_VECTOR_INTERRUPT_HW8 17
464 #define NDS32_VECTOR_INTERRUPT_HW9 18
465 #define NDS32_VECTOR_INTERRUPT_HW10 19
466 #define NDS32_VECTOR_INTERRUPT_HW11 20
467 #define NDS32_VECTOR_INTERRUPT_HW12 21
468 #define NDS32_VECTOR_INTERRUPT_HW13 22
469 #define NDS32_VECTOR_INTERRUPT_HW14 23
470 #define NDS32_VECTOR_INTERRUPT_HW15 24
471 #define NDS32_VECTOR_INTERRUPT_HW16 25
472 #define NDS32_VECTOR_INTERRUPT_HW17 26
473 #define NDS32_VECTOR_INTERRUPT_HW18 27
474 #define NDS32_VECTOR_INTERRUPT_HW19 28
475 #define NDS32_VECTOR_INTERRUPT_HW20 29
476 #define NDS32_VECTOR_INTERRUPT_HW21 30
477 #define NDS32_VECTOR_INTERRUPT_HW22 31
478 #define NDS32_VECTOR_INTERRUPT_HW23 32
479 #define NDS32_VECTOR_INTERRUPT_HW24 33
480 #define NDS32_VECTOR_INTERRUPT_HW25 34
481 #define NDS32_VECTOR_INTERRUPT_HW26 35
482 #define NDS32_VECTOR_INTERRUPT_HW27 36
483 #define NDS32_VECTOR_INTERRUPT_HW28 37
484 #define NDS32_VECTOR_INTERRUPT_HW29 38
485 #define NDS32_VECTOR_INTERRUPT_HW30 39
486 #define NDS32_VECTOR_INTERRUPT_HW31 40
487 #define NDS32_VECTOR_INTERRUPT_HW32 41
488 #define NDS32_VECTOR_INTERRUPT_HW33 42
489 #define NDS32_VECTOR_INTERRUPT_HW34 43
490 #define NDS32_VECTOR_INTERRUPT_HW35 44
491 #define NDS32_VECTOR_INTERRUPT_HW36 45
492 #define NDS32_VECTOR_INTERRUPT_HW37 46
493 #define NDS32_VECTOR_INTERRUPT_HW38 47
494 #define NDS32_VECTOR_INTERRUPT_HW39 48
495 #define NDS32_VECTOR_INTERRUPT_HW40 49
496 #define NDS32_VECTOR_INTERRUPT_HW41 50
497 #define NDS32_VECTOR_INTERRUPT_HW42 51
498 #define NDS32_VECTOR_INTERRUPT_HW43 52
499 #define NDS32_VECTOR_INTERRUPT_HW44 53
500 #define NDS32_VECTOR_INTERRUPT_HW45 54
501 #define NDS32_VECTOR_INTERRUPT_HW46 55
502 #define NDS32_VECTOR_INTERRUPT_HW47 56
503 #define NDS32_VECTOR_INTERRUPT_HW48 57
504 #define NDS32_VECTOR_INTERRUPT_HW49 58
505 #define NDS32_VECTOR_INTERRUPT_HW50 59
506 #define NDS32_VECTOR_INTERRUPT_HW51 60
507 #define NDS32_VECTOR_INTERRUPT_HW52 61
508 #define NDS32_VECTOR_INTERRUPT_HW53 62
509 #define NDS32_VECTOR_INTERRUPT_HW54 63
510 #define NDS32_VECTOR_INTERRUPT_HW55 64
511 #define NDS32_VECTOR_INTERRUPT_HW56 65
512 #define NDS32_VECTOR_INTERRUPT_HW57 66
513 #define NDS32_VECTOR_INTERRUPT_HW58 67
514 #define NDS32_VECTOR_INTERRUPT_HW59 68
515 #define NDS32_VECTOR_INTERRUPT_HW60 69
516 #define NDS32_VECTOR_INTERRUPT_HW61 70
517 #define NDS32_VECTOR_INTERRUPT_HW62 71
518 #define NDS32_VECTOR_INTERRUPT_HW63 72
519
520 #define NDS32ATTR_RESET(option) __attribute__((reset(option)))
521 #define NDS32ATTR_EXCEPT(type) __attribute__((exception(type)))
522 #define NDS32ATTR_EXCEPTION(type) __attribute__((exception(type)))
523 #define NDS32ATTR_INTERRUPT(type) __attribute__((interrupt(type)))
524 #define NDS32ATTR_ISR(type) __attribute__((interrupt(type)))
525
526 #endif /* nds32_isr.h */