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revert between 56095 -> 55830 in arch
[AROS.git] / arch / ppc-chrp / efika / kernel / intr.c
blob34502961943cc44fad4c475d36d9e9fc2667f12a
1 /*
2 Copyright © 2008-2014, The AROS Development Team. All rights reserved.
3 $Id$
4 */
5
6 #include <inttypes.h>
7 #include <aros/kernel.h>
8 #include <aros/libcall.h>
9 #include <asm/mpc5200b.h>
10 #include <stddef.h>
11 #include <string.h>
12
13 #include <proto/exec.h>
14 #include <proto/kernel.h>
15
16 #include "kernel_intern.h"
17 #include "syscall.h"
18
19 extern void __tmpl_start();
20 extern uint32_t __tmpl_addr_lo;
21 extern uint32_t __tmpl_addr_hi;
22 extern uint32_t __tmpl_irq_num;
23 extern uint32_t __tmpl_length;
24 static void init_interrupt(uint8_t num, void *handler);
25 void __attribute__((noreturn)) program_handler(regs_t *ctx, uint8_t exception, void *self);
26 void __attribute__((noreturn)) generic_handler(regs_t *ctx, uint8_t exception, void *self);
27 void __attribute__((noreturn)) decrementer_handler(regs_t *ctx, uint8_t exception, void *self);
28 static void flush_cache(char *start, char *end);
29
30 AROS_LH4(void *, KrnAddExceptionHandler,
31 AROS_LHA(uint8_t, irq, D0),
32 AROS_LHA(void *, handler, A0),
33 AROS_LHA(void *, handlerData, A1),
34 AROS_LHA(void *, handlerData2, A2),
35 struct KernelBase *, KernelBase, 14, Kernel)
36 {
37 AROS_LIBFUNC_INIT
38
39 struct ExecBase *SysBase = getSysBase();
40 struct ExceptNode *handle = NULL;
41 D(bug("[KRN] KrnAddExceptionHandler(%02x, %012p, %012p, %012p):\n", irq, handler, handlerData, handlerData2));
42
43 if (irq < 21)
44 {
45 /* Go to supervisor mode */
46 goSuper();
47
48 handle = Allocate(KernelBase->kb_SupervisorMem, sizeof(struct ExceptNode));
49 D(bug("[KRN] handle=%012p\n", handle));
50
51 if (handle)
52 {
53 handle->in_Handler = handler;
54 handle->in_HandlerData = handlerData;
55 handle->in_HandlerData2 = handlerData2;
56 handle->in_type = it_exception;
57 handle->in_nr = irq;
58
59 Disable();
60 ADDHEAD(&KernelBase->kb_Exceptions[irq], &handle->in_Node);
61 Enable();
62 }
63
64 goUser();
65 }
66
67 return handle;
68
69 AROS_LIBFUNC_EXIT
70 }
71
72 AROS_LH1(void, KrnRemExceptionHandler,
73 AROS_LHA(void *, handle, A0),
74 struct KernelBase *, KernelBase, 15, Kernel)
75 {
76 AROS_LIBFUNC_INIT
77
78 struct ExecBase *SysBase = getSysBase();
79 struct ExceptNode *h = handle;
80
81 if (h && (h->in_type == it_exception))
82 {
83 goSuper();
84
85 Disable();
86 REMOVE(h);
87 Enable();
88
89 Deallocate(KernelBase->kb_SupervisorMem, h, sizeof(struct IntrNode));
90
91 goUser();
92 }
93
94 AROS_LIBFUNC_EXIT
95 }
96
97
98
99 AROS_LH4(void *, KrnAddIRQHandler,
100 AROS_LHA(uint8_t, irq, D0),
101 AROS_LHA(void *, handler, A0),
102 AROS_LHA(void *, handlerData, A1),
103 AROS_LHA(void *, handlerData2, A2),
104 struct KernelBase *, KernelBase, 7, Kernel)
105 {
106 AROS_LIBFUNC_INIT
107
108 struct ExecBase *SysBase = getSysBase();
109 struct IntrNode *handle = NULL;
110 D(bug("[KRN] KrnAddIRQHandler(%02x, %012p, %012p, %012p):\n", irq, handler, handlerData, handlerData2));
111
112 if (irq < 63)
113 {
114 /* Go to supervisor mode */
115 goSuper();
116
117 handle = Allocate(KernelBase->kb_SupervisorMem, sizeof(struct IntrNode));
118 D(bug("[KRN] handle=%012p\n", handle));
119
120 if (handle)
121 {
122 handle->in_Handler = handler;
123 handle->in_HandlerData = handlerData;
124 handle->in_HandlerData2 = handlerData2;
125 handle->in_type = it_interrupt;
126 handle->in_nr = irq;
127
128 Disable();
129
130 ADDHEAD(&KernelBase->kb_Interrupts[irq], &handle->in_Node);
131
132 ictl_enable_irq(irq);
133
134 Enable();
135 }
136
137 goUser();
138 }
139
140 return handle;
141
142 AROS_LIBFUNC_EXIT
143 }
144
145 AROS_LH1(void, KrnRemIRQHandler,
146 AROS_LHA(void *, handle, A0),
147 struct KernelBase *, KernelBase, 8, Kernel)
148 {
149 AROS_LIBFUNC_INIT
150
151 struct ExecBase *SysBase = getSysBase();
152 struct IntrNode *h = handle;
153 uint8_t irq = h->in_nr;
154
155 if (h && (h->in_type == it_interrupt))
156 {
157 goSuper();
158
159 Disable();
160 REMOVE(h);
161 if (IsListEmpty(&KernelBase->kb_Interrupts[irq]))
162 {
163 ictl_disable_irq(irq);
164 }
165 Enable();
166
167 Deallocate(KernelBase->kb_SupervisorMem, h, sizeof(struct IntrNode));
168
169 goUser();
170 }
171
172 AROS_LIBFUNC_EXIT
173 }
174
175
176 /*
177 * G2 core and exceptions.
178 *
179 * The MPC5200B CPU just like most of the PowerPC family members, has two fixed
180 * locations for exception handlers: 0x0000_xxxx and 0xFFFF_xxxx. When an
181 * exception occurs, CPU calculates the entry address by shifting exception
182 * number by eight bits left, adds the base location and begins execution of the
183 * code at calculated address.
184 *
185 * For AROS it means that it has only 256 bytes (64 instructions) for an
186 * exception entry code. Therefore, just like all PowerPC operating systems,
187 * AROS performs a quick initialization of an exception, saves few registers,
188 * sets the exception number and determines the handler address and then it jumps
189 * to a common trampoline code. There, the rest of the CPU context is saved, MMU
190 * is activated and the handler routine written in C is called.
191 *
192 * Leaving the exception is performed through core_LeaveInterrupt() call which
193 * takes the CPU context as parameter.
194 *
195 * About MMU.
196 *
197 * There is some trouble related to MMU, location of exception handler and
198 * accessing data from there. PPC executes exception handlers in real mode, which
199 * means that the MMU translations are disabled completely. Therefore, going back
200 * to MMU-ed state is performed in two steps:
201 * 1. The MMU for DATA is turned on very early, because otherwise the exception
202 * handler wouldn't be able to access the supervisor stack
203 * 2. The MMU for CODE is turned on as late as possible. It happens when the C
204 * code is called. The Call is performed through the rfi instruction, which
205 * restores the old contents of MSR register (actually it is prepared by the
206 * asm part of exception handler) which in turn enables MMU for CODE.
207 */
208
209 extern uint32_t __vector_imiss;
210 extern uint32_t __vector_dmiss;
211 extern uint32_t __vector_dmissw;
212
213 void intr_init()
214 {
215 D(bug("[KRN] Initializing exception handlers\n"));
216
217 init_interrupt( 1, generic_handler); /* RESET */
218 init_interrupt( 2, generic_handler); /* Machine check */
219 init_interrupt( 3, mmu_handler); /* DSI */
220 init_interrupt( 4, mmu_handler); /* ISI */
221 init_interrupt( 5, ictl_handler); /* External Intr */
222 init_interrupt( 6, generic_handler); /* Alignment */
223 init_interrupt( 7, program_handler); /* Program */
224 init_interrupt( 8, generic_handler); /* Floating point unavailable */
225 init_interrupt( 9, decrementer_handler);/* Decrementer */
226 init_interrupt(10, generic_handler); /* critical exception */
227 init_interrupt(12, syscall_handler); /* Syscall */
228 init_interrupt(13, generic_handler); /* Trace */
229 init_interrupt(16, generic_handler); /* Instruction translation miss */
230 init_interrupt(17, generic_handler); /* Data load translation miss */
231 init_interrupt(18, generic_handler); /* Data store translation miss */
232 init_interrupt(19, generic_handler); /* Instruction address breakpoint */
233 init_interrupt(20, ictl_handler); /* SMI */
234 }
235
236 /*
237 * Initializer of an exception handler. It copies the template code into proper
238 * location and adjust two exception-dependent elements in the code - the
239 * instruction which loads exception number: "li %r4,exception_number" and the
240 * two instructions which load the address of a handler:
241 * "lis %r5,handler_address@ha; la %r5, handler_address@l(%r5)"
242 *
243 * Once ready, data cache has to be flushed back into memory and the instruction
244 * cache has to be invalidated.
245 */
246 static void init_interrupt(uint8_t num, void *handler)
247 {
248 if (num > 0 && num < 0x2f)
249 {
250 intptr_t target = num << 8;
251
252 if (num == 16)
253 memcpy((void*)target, &__vector_imiss, 256);
254 else if (num == 17)
255 memcpy((void*)target, &__vector_dmiss, 256);
256 else if (num == 18)
257 memcpy((void*)target, &__vector_dmissw, 256);
258 else
259 {
260 memcpy((void*)target, __tmpl_start, __tmpl_length);
261
262 /* Fix the exception number */
263 *(uint16_t *)(target + __tmpl_irq_num) = num;
264
265 /* Fix the handler address */
266 *(uint16_t *)(target + __tmpl_addr_lo) = (intptr_t)handler & 0x0000ffff;
267 *(uint16_t *)(target + __tmpl_addr_hi) = (intptr_t)handler >> 16;
268
269 /*
270 * Adjustment of the lower halfword of address is done through "la"
271 * instruction, which happens to be the same as addi:
272 *
273 * "la %reg1, offset(%reg2) <=> addi %reg1, %reg1, offset"
274 *
275 * If the offset is bigger then 32KB (thus seen by addi as a negative
276 * number), increase the upper halfword by one.
277 */
278 if ((intptr_t)handler & 0x00008000)
279 (*(uint16_t *)(target + __tmpl_addr_hi))++;
280 }
281
282 /* Flush the cache */
283 flush_cache((char*)target, (char*)target + 0xff);
284 }
285 }
286
287 /* Tiny routine to flush caches for a region of memory */
288 static void flush_cache(char *start, char *end)
289 {
290 start = (char*)((unsigned long)start & 0xffffffe0);
291 end = (char*)((unsigned long)end & 0xffffffe0);
292 char *ptr;
293
294 for (ptr = start; ptr < end; ptr +=32)
295 {
296 asm volatile("dcbst 0,%0"::"r"(ptr));
297 }
298 asm volatile("sync");
299
300 for (ptr = start; ptr < end; ptr +=32)
301 {
302 asm volatile("icbi 0,%0"::"r"(ptr));
303 }
304
305 asm volatile("sync; isync; ");
306 }
307
308 /* FPU handler */
309 void __attribute__((noreturn)) fpu_handler(context_t *ctx, uint8_t exception, void *self)
310 {
311 struct KernelBase *KernelBase = getKernelBase();
312
313 if (KernelBase)
314 {
315 if (!IsListEmpty(&KernelBase->kb_Exceptions[exception]))
316 {
317 struct ExceptNode *in, *intemp;
318
319 ForeachNodeSafe(&KernelBase->kb_Exceptions[exception], in, intemp)
320 {
321 /*
322 * call every handler tied to this exception.
323 */
324 if (in->in_Handler)
325 in->in_Handler(ctx, in->in_HandlerData, in->in_HandlerData2);
326 }
327 }
328 }
329
330 core_LeaveInterrupt(ctx);
331 }
332
333 extern uint64_t tbu1;
334 extern uint64_t tbu2;
335 extern uint64_t last_calc;
336 extern uint64_t idle_time;
337 extern uint32_t cpu_usage;
338 extern struct Task *idle_task;
339
340 /* Decrementer handler */
341 void __attribute__((noreturn)) decrementer_handler(regs_t *ctx, uint8_t exception, void *self)
342 {
343 struct KernelBase *KernelBase = getKernelBase();
344 struct ExecBase *SysBase = getSysBase();
345 // static uint32_t cnt = 0;
346
347 asm volatile("mtdec %0"::"r"(33000000/100));
348
349 if (KernelBase)
350 {
351 if (!IsListEmpty(&KernelBase->kb_Exceptions[exception]))
352 {
353 struct ExceptNode *in, *intemp;
354
355 ForeachNodeSafe(&KernelBase->kb_Exceptions[exception], in, intemp)
356 {
357 /*
358 * call every handler tied to this exception.
359 */
360 if (in->in_Handler)
361 in->in_Handler(ctx, in->in_HandlerData, in->in_HandlerData2);
362 }
363 }
364 }
365
366 if (SysBase && SysBase->Elapsed)
367 {
368 if (--SysBase->Elapsed == 0)
369 {
370 SysBase->SysFlags |= 0x2000;
371 SysBase->AttnResched |= 0x80;
372 }
373 }
374
375 /* CPU usage meter. it should not be here, actually */
376 uint64_t current = mftbu();
377 if (current - last_calc > 33000000)
378 {
379 uint32_t total_time = current - last_calc;
380
381 if (SysBase->ThisTask == idle_task)
382 {
383 tbu2 = mftbu();
384 idle_time += tbu2 - tbu1;
385 tbu1 = tbu2;
386 }
387
388 if (total_time < idle_time)
389 total_time=idle_time;
390
391 cpu_usage = 1000 - ((uint32_t)(idle_time))/(total_time /1000);
392
393 D(bug("[KRN] CPU usage: %3d.%d\n", cpu_usage / 10, cpu_usage % 10));
394
395 last_calc = current;
396 idle_time = 0;
397 }
398
399 core_ExitInterrupt(ctx);
400 }
401
402 /* Generic boring handler */
403 void __attribute__((noreturn)) program_handler(regs_t *ctx, uint8_t exception, void *self)
404 {
405 struct KernelBase *KernelBase = getKernelBase();
406 struct ExecBase *SysBase = getSysBase();
407 int handled = 0;
408
409 uint32_t insn = *(uint32_t *)ctx->srr0;
410
411 if ((insn & 0xfc1fffff) == 0x7c1442a6) /* mfspr sprg4 */
412 {
413 ctx->gpr[(insn >> 21) & 0x1f] = getKernelBase();
414 ctx->srr0 += 4;
415 core_LeaveInterrupt(ctx);
416 }
417 else if ((insn & 0xfc1fffff) == 0x7c1542a6) /* mfspr sprg5 */
418 {
419 ctx->gpr[(insn >> 21) & 0x1f] = getSysBase();
420 ctx->srr0 += 4;
421 core_LeaveInterrupt(ctx);
422 }
423 else if (insn == 0x7fe00008)
424 {
425 D(bug("[KRN] trap @ %08x (r3=%08x)\n", ctx->srr0, ctx->gpr[3]));
426
427 if (SysBase)
428 {
429 struct Task *t = FindTask(NULL);
430 D(bug("[KRN] %s %p (%s)\n", t->tc_Node.ln_Type == NT_TASK ? "Task":"Process", t, t->tc_Node.ln_Name ? t->tc_Node.ln_Name : "--unknown--"));
431 }
432 D(bug("[KRN] SRR0=%08x, SRR1=%08x\n",ctx->srr0, ctx->srr1));
433 D(bug("[KRN] CTR=%08x LR=%08x XER=%08x CCR=%08x\n", ctx->ctr, ctx->lr, ctx->xer, ctx->ccr));
434 D(bug("[KRN] DAR=%08x DSISR=%08x\n", ctx->dar, ctx->dsisr));
435
436 D(bug("[KRN] HASH1=%08x HASH2=%08x IMISS=%08x DMISS=%08x ICMP=%08x DCMP=%08x\n",
437 rdspr(978), rdspr(979), rdspr(980), rdspr(976), rdspr(981), rdspr(977)));
438
439 D(bug("[KRN] SPRG0=%08x SPRG1=%08x SPRG2=%08x SPRG3=%08x SPRG4=%08x SPRG5=%08x\n",
440 rdspr(SPRG0),rdspr(SPRG1),rdspr(SPRG2),rdspr(SPRG3),rdspr(SPRG4),rdspr(SPRG5)));
441
442 D(bug("[KRN] GPR00=%08x GPR01=%08x GPR02=%08x GPR03=%08x\n",
443 ctx->gpr[0],ctx->gpr[1],ctx->gpr[2],ctx->gpr[3]));
444 D(bug("[KRN] GPR04=%08x GPR05=%08x GPR06=%08x GPR07=%08x\n",
445 ctx->gpr[4],ctx->gpr[5],ctx->gpr[6],ctx->gpr[7]));
446 D(bug("[KRN] GPR08=%08x GPR09=%08x GPR10=%08x GPR11=%08x\n",
447 ctx->gpr[8],ctx->gpr[9],ctx->gpr[10],ctx->gpr[11]));
448 D(bug("[KRN] GPR12=%08x GPR13=%08x GPR14=%08x GPR15=%08x\n",
449 ctx->gpr[12],ctx->gpr[13],ctx->gpr[14],ctx->gpr[15]));
450
451 D(bug("[KRN] GPR16=%08x GPR17=%08x GPR18=%08x GPR19=%08x\n",
452 ctx->gpr[16],ctx->gpr[17],ctx->gpr[18],ctx->gpr[19]));
453 D(bug("[KRN] GPR20=%08x GPR21=%08x GPR22=%08x GPR23=%08x\n",
454 ctx->gpr[20],ctx->gpr[21],ctx->gpr[22],ctx->gpr[23]));
455 D(bug("[KRN] GPR24=%08x GPR25=%08x GPR26=%08x GPR27=%08x\n",
456 ctx->gpr[24],ctx->gpr[25],ctx->gpr[26],ctx->gpr[27]));
457 D(bug("[KRN] GPR28=%08x GPR29=%08x GPR30=%08x GPR31=%08x\n",
458 ctx->gpr[28],ctx->gpr[29],ctx->gpr[30],ctx->gpr[31]));
459
460 ctx->srr0 += 4;
461 core_LeaveInterrupt(ctx);
462 }
463 else
464 generic_handler(ctx, exception, self);
465 }
466
467
468
469 /* Generic boring handler */
470 void __attribute__((noreturn)) generic_handler(regs_t *ctx, uint8_t exception, void *self)
471 {
472 struct KernelBase *KernelBase = getKernelBase();
473 struct ExecBase *SysBase = getSysBase();
474 int handled = 0;
475
476 if (KernelBase)
477 {
478 if (!IsListEmpty(&KernelBase->kb_Exceptions[exception]))
479 {
480 struct ExceptNode *in, *intemp;
481
482 ForeachNodeSafe(&KernelBase->kb_Exceptions[exception], in, intemp)
483 {
484 /*
485 * call every handler tied to this exception. If any of them
486 * returns a non-zero value, the exception is considered handled.
487 *
488 * If no handler will return zero, or there are no handlers at all,
489 * this generic handler will stop cpu.
490 */
491 if (in->in_Handler)
492 handled |= in->in_Handler(ctx, in->in_HandlerData, in->in_HandlerData2);
493 }
494 }
495 }
496
497 D(bug("[KRN] Exception %d handler. Context @ %p, SysBase @ %p, KernelBase @ %p\n", exception, ctx, SysBase, KernelBase));
498 if (SysBase)
499 {
500 struct Task *t = FindTask(NULL);
501 D(bug("[KRN] %s %p (%s)\n", t->tc_Node.ln_Type == NT_TASK ? "Task":"Process", t, t->tc_Node.ln_Name ? t->tc_Node.ln_Name : "--unknown--"));
502 }
503 D(bug("[KRN] SRR0=%08x, SRR1=%08x\n",ctx->srr0, ctx->srr1));
504 D(bug("[KRN] CTR=%08x LR=%08x XER=%08x CCR=%08x\n", ctx->ctr, ctx->lr, ctx->xer, ctx->ccr));
505 D(bug("[KRN] DAR=%08x DSISR=%08x\n", ctx->dar, ctx->dsisr));
506
507 D(bug("[KRN] HASH1=%08x HASH2=%08x IMISS=%08x DMISS=%08x ICMP=%08x DCMP=%08x\n",
508 rdspr(978), rdspr(979), rdspr(980), rdspr(976), rdspr(981), rdspr(977)));
509
510 D(bug("[KRN] SPRG0=%08x SPRG1=%08x SPRG2=%08x SPRG3=%08x SPRG4=%08x SPRG5=%08x\n",
511 rdspr(SPRG0),rdspr(SPRG1),rdspr(SPRG2),rdspr(SPRG3),rdspr(SPRG4),rdspr(SPRG5)));
512
513 D(bug("[KRN] GPR00=%08x GPR01=%08x GPR02=%08x GPR03=%08x\n",
514 ctx->gpr[0],ctx->gpr[1],ctx->gpr[2],ctx->gpr[3]));
515 D(bug("[KRN] GPR04=%08x GPR05=%08x GPR06=%08x GPR07=%08x\n",
516 ctx->gpr[4],ctx->gpr[5],ctx->gpr[6],ctx->gpr[7]));
517 D(bug("[KRN] GPR08=%08x GPR09=%08x GPR10=%08x GPR11=%08x\n",
518 ctx->gpr[8],ctx->gpr[9],ctx->gpr[10],ctx->gpr[11]));
519 D(bug("[KRN] GPR12=%08x GPR13=%08x GPR14=%08x GPR15=%08x\n",
520 ctx->gpr[12],ctx->gpr[13],ctx->gpr[14],ctx->gpr[15]));
521
522 D(bug("[KRN] GPR16=%08x GPR17=%08x GPR18=%08x GPR19=%08x\n",
523 ctx->gpr[16],ctx->gpr[17],ctx->gpr[18],ctx->gpr[19]));
524 D(bug("[KRN] GPR20=%08x GPR21=%08x GPR22=%08x GPR23=%08x\n",
525 ctx->gpr[20],ctx->gpr[21],ctx->gpr[22],ctx->gpr[23]));
526 D(bug("[KRN] GPR24=%08x GPR25=%08x GPR26=%08x GPR27=%08x\n",
527 ctx->gpr[24],ctx->gpr[25],ctx->gpr[26],ctx->gpr[27]));
528 D(bug("[KRN] GPR28=%08x GPR29=%08x GPR30=%08x GPR31=%08x\n",
529 ctx->gpr[28],ctx->gpr[29],ctx->gpr[30],ctx->gpr[31]));
530
531 D(bug("[KRN] Instruction dump:\n"));
532 int i;
533 ULONG *p = (ULONG*)ctx->srr0;
534 for (i=0; i < 8; i++)
535 {
536 D(bug("[KRN] %08x: %08x\n", &p[i], p[i]));
537 }
538
539 if (!handled)
540 {
541 D(bug("[KRN] **UNHANDLED EXCEPTION** stopping here...\n"));
542
543 while(1) {
544 wrmsr(rdmsr() | MSR_POW);
545 }
546 }
547 core_LeaveInterrupt(ctx);
548 }
549
550 /*
551 * Template code for an exception handler. Packed into a static void function
552 * in order to make the assembler constrains usable.
553 */
554 static void __attribute__((used)) __exception_template()
555 {
556 asm volatile(".globl __tmpl_start; .type __tmpl_start,@function\n"
557 "__tmpl_start: \n"
558 " mtsprg1 %%r3 \n" /* save %r3 */
559 " mfcr %%r3 \n" /* copy CR to %r3 */
560 " mtsprg3 %%r3 \n" /* save %r3 */
561
562 " mfmsr %%r3 \n"
563 " ori %%r3,%%r3,%2 \n" /* Enable address translation for data */
564 " mtmsr %%r3 \n"
565 " sync; isync \n"
566
567 " mfsrr1 %%r3 \n" /* srr1 (previous MSR) reg into %r3 */
568 " andi. %%r3,%%r3,%0 \n" /* Was the PR bit set in MSR already? */
569 " beq- 1f \n" /* No, we were in supervisor mode */
570
571 " mfsprg0 %%r3 \n" /* user mode case: SSP into %r3 */
572 " b 2f \n"
573 "1: mr %%r3,%%r1 \n" /* Supervisor case: use current stack */
574 "2: addi %%r3,%%r3,%1 \n"
575
576
577 ::"i"(MSR_PR),"i"(-sizeof(context_t)),"i"(MSR_DS));
578
579 asm volatile(
580 " stw %%r0, %[gpr0](%%r3) \n" /* Store bunch of registers already. I could */
581 " stw %%r1, %[gpr1](%%r3) \n" /* do it in common trampoline code, but it */
582 " stw %%r2, %[gpr2](%%r3) \n" /* is much more sexy to do it here - this code */
583 " mfsprg1 %%r0 \n" /* occupies in theory ZERO bytes in memory */
584 " stw %%r4, %[gpr4](%%r3) \n" /* because the exception vector is 256 bytes long */
585 " stw %%r0, %[gpr3](%%r3) \n" /* and shouldn't be used to anything else than */
586 " stw %%r5, %[gpr5](%%r3) \n" /* exception handler anyway ;) */
587 " mfsprg3 %%r2 \n"
588 " mfsrr0 %%r0 \n"
589 " mfsrr1 %%r1 \n"
590 "__addr_hi: lis %%r5, 0xdeadbeef@ha\n" /* Load the address of an generic handler */
591 "__addr_lo: la %%r5, 0xdeadbeef@l(%%r5)\n" /* yes, load immediate sucks. Think about 64-bit PPC ;) */
592 "__irq_num: li %%r4, 0x5a5a \n" /* Load the exception number */
593 " stw %%r2,%[ccr](%%r3) \n"
594 " stw %%r0,%[srr0](%%r3) \n"
595 " stw %%r1,%[srr1](%%r3) \n"
596 " mfctr %%r0 \n"
597 " mflr %%r1 \n"
598 " mfxer %%r2 \n"
599 " stw %%r0,%[ctr](%%r3) \n"
600 " stw %%r1,%[lr](%%r3) \n"
601 " stw %%r2,%[xer](%%r3) \n"
602
603
604 ::[gpr0]"i"(offsetof(regs_t, gpr[0])),
605 [gpr1]"i"(offsetof(regs_t, gpr[1])),
606 [gpr2]"i"(offsetof(regs_t, gpr[2])),
607 [gpr3]"i"(offsetof(regs_t, gpr[3])),
608 [gpr4]"i"(offsetof(regs_t, gpr[4])),
609 [gpr5]"i"(offsetof(regs_t, gpr[5])),
610 [ccr]"i"(offsetof(regs_t, ccr)),
611 [srr0]"i"(offsetof(regs_t, srr0)),
612 [srr1]"i"(offsetof(regs_t, srr1)),
613 [ctr]"i"(offsetof(regs_t, ctr)),
614 [lr]"i"(offsetof(regs_t, lr)),
615 [xer]"i"(offsetof(regs_t, xer)));
616
617 /*
618 * Registers %r0 to %r5 are now saved together with CPU state. Go to the
619 * trampoline code which will care about the rest. Adjust the stack frame pointer now,
620 * or else it will be destroyed later by C code.
621 */
622 asm volatile("addi %r1,%r3,-16");
623
624 /*
625 * Go to the trampoline code. Use long call within whole 4GB addresspace in order to
626 * avoid any trouble in future. Moreover use the PHYSICAL address since at this stage
627 * MMU for code is still not running! If one would like to use MMU at this stage
628 * already, we would have to make region 0x00000000-0x00003000 *EXECUTABLE* :))
629 */
630 asm volatile( "lis %r2,(__EXCEPTION_Trampoline - " STR(KERNEL_VIRT_BASE) " + " STR(KERNEL_PHYS_BASE) ")@ha;"
631 "la %r2,(__EXCEPTION_Trampoline - " STR(KERNEL_VIRT_BASE) " + " STR(KERNEL_PHYS_BASE) ")@l(%r2); mtctr %r2;");
632
633 /* Jump to the trampoline code */
634 asm volatile("bctr;");
635
636 /*
637 * Few variables: length of the code above and offsets used to fix the
638 * exception number and handler address.
639 */
640 asm volatile("__tmpl_length: .long . - __tmpl_start\n");
641 asm volatile("__tmpl_addr_lo: .long 2 + __addr_lo - __tmpl_start\n");
642 asm volatile("__tmpl_addr_hi: .long 2 + __addr_hi - __tmpl_start\n");
643 asm volatile("__tmpl_irq_num: .long 2 + __irq_num - __tmpl_start\n");
644 }
645
646 /*
647 * Trampoline code is boring. It stores rest of the CPU context and prepares
648 * everything for execution of the C code.
649 *
650 * The only interesting part is the jump to C routine which is done throuhg the
651 * rfi instruction (return from interrupt). I do it so because this way I may
652 * enable the MMU for code and jump CPU to the desired address within one insn.
653 */
654 static void __attribute__((used)) __EXCEPTION_Trampoline_template()
655 {
656 asm volatile(".section .aros.init,\"ax\"\n\t.align 5\n\t.globl __EXCEPTION_Trampoline\n\t.type __EXCEPTION_Trampoline,@function\n"
657 "__EXCEPTION_Trampoline: \n\t"
658 "stw %%r6,%[gpr6](%%r3) \n\t"
659 "stw %%r7,%[gpr7](%%r3) \n\t"
660 "stw %%r8,%[gpr8](%%r3) \n\t"
661 "stw %%r9,%[gpr9](%%r3) \n\t"
662 "stw %%r10,%[gpr10](%%r3) \n\t"
663 "stw %%r11,%[gpr11](%%r3) \n\t"
664 "stw %%r12,%[gpr12](%%r3) \n\t"
665 "stw %%r13,%[gpr13](%%r3) \n\t"
666 "stw %%r14,%[gpr14](%%r3) \n\t"
667 "stw %%r15,%[gpr15](%%r3) \n\t"
668 "stw %%r16,%[gpr16](%%r3) \n\t"
669 "stw %%r17,%[gpr17](%%r3) \n\t"
670 "stw %%r18,%[gpr18](%%r3) \n\t"
671 "stw %%r19,%[gpr19](%%r3) \n\t"
672 "stw %%r20,%[gpr20](%%r3) \n\t"
673 "stw %%r21,%[gpr21](%%r3) \n\t"
674 "stw %%r22,%[gpr22](%%r3) \n\t"
675 "stw %%r23,%[gpr23](%%r3) \n\t"
676 "stw %%r24,%[gpr24](%%r3) \n\t"
677 "stw %%r25,%[gpr25](%%r3) \n\t"
678 "stw %%r26,%[gpr26](%%r3) \n\t"
679 "stw %%r27,%[gpr27](%%r3) \n\t"
680 "stw %%r28,%[gpr28](%%r3) \n\t"
681 "stw %%r29,%[gpr29](%%r3) \n\t"
682 "stw %%r30,%[gpr30](%%r3) \n\t"
683 "stw %%r31,%[gpr31](%%r3) \n\t"
684 ::
685 [gpr6]"i"(offsetof(regs_t, gpr[6])),
686 [gpr7]"i"(offsetof(regs_t, gpr[7])),
687 [gpr8]"i"(offsetof(regs_t, gpr[8])),
688 [gpr9]"i"(offsetof(regs_t, gpr[9])),
689 [gpr10]"i"(offsetof(regs_t, gpr[10])),
690 [gpr11]"i"(offsetof(regs_t, gpr[11])),
691 [gpr12]"i"(offsetof(regs_t, gpr[12])),
692 [gpr13]"i"(offsetof(regs_t, gpr[13])),
693 [gpr14]"i"(offsetof(regs_t, gpr[14])),
694 [gpr15]"i"(offsetof(regs_t, gpr[15])),
695 [gpr16]"i"(offsetof(regs_t, gpr[16])),
696 [gpr17]"i"(offsetof(regs_t, gpr[17])),
697 [gpr18]"i"(offsetof(regs_t, gpr[18])),
698 [gpr19]"i"(offsetof(regs_t, gpr[19])),
699 [gpr20]"i"(offsetof(regs_t, gpr[20])),
700 [gpr21]"i"(offsetof(regs_t, gpr[21])),
701 [gpr22]"i"(offsetof(regs_t, gpr[22])),
702 [gpr23]"i"(offsetof(regs_t, gpr[23])),
703 [gpr24]"i"(offsetof(regs_t, gpr[24])),
704 [gpr25]"i"(offsetof(regs_t, gpr[25])),
705 [gpr26]"i"(offsetof(regs_t, gpr[26])),
706 [gpr27]"i"(offsetof(regs_t, gpr[27])),
707 [gpr28]"i"(offsetof(regs_t, gpr[28])),
708 [gpr29]"i"(offsetof(regs_t, gpr[29])),
709 [gpr30]"i"(offsetof(regs_t, gpr[30])),
710 [gpr31]"i"(offsetof(regs_t, gpr[31]))
711 );
712 asm volatile(
713 "mfmsr %%r0 \n\t"
714 "ori %%r0,%%r0, %[msrval]@l \n\t"
715 "mtmsr %%r0; isync \n\t"
716 "stfd %%f0,%[fr0](%%r3) \n\t"
717 "mffs %%f0 \n\t"
718 "stfd %%f0,%[fpscr](%%r3) \n\t"
719 "stfd %%f1,%[fr1](%%r3) \n\t"
720 "stfd %%f2,%[fr2](%%r3) \n\t"
721 "stfd %%f3,%[fr3](%%r3) \n\t"
722 "stfd %%f4,%[fr4](%%r3) \n\t"
723 "stfd %%f5,%[fr5](%%r3) \n\t"
724 "stfd %%f6,%[fr6](%%r3) \n\t"
725 "stfd %%f7,%[fr7](%%r3) \n\t"
726 "stfd %%f8,%[fr8](%%r3) \n\t"
727 "stfd %%f9,%[fr9](%%r3) \n\t"
728 "stfd %%f10,%[fr10](%%r3) \n\t"
729 "stfd %%f11,%[fr11](%%r3) \n\t"
730 "stfd %%f12,%[fr12](%%r3) \n\t"
731 "stfd %%f13,%[fr13](%%r3) \n\t"
732 "stfd %%f14,%[fr14](%%r3) \n\t"
733 "stfd %%f15,%[fr15](%%r3) \n\t"
734 ::
735 [fpscr]"i"(offsetof(context_t, fpu.fpscr)),
736 [fr0]"i"(offsetof(context_t, fpu.fpr[0])),
737 [fr1]"i"(offsetof(context_t, fpu.fpr[1])),
738 [fr2]"i"(offsetof(context_t, fpu.fpr[2])),
739 [fr3]"i"(offsetof(context_t, fpu.fpr[3])),
740 [fr4]"i"(offsetof(context_t, fpu.fpr[4])),
741 [fr5]"i"(offsetof(context_t, fpu.fpr[5])),
742 [fr6]"i"(offsetof(context_t, fpu.fpr[6])),
743 [fr7]"i"(offsetof(context_t, fpu.fpr[7])),
744 [fr8]"i"(offsetof(context_t, fpu.fpr[8])),
745 [fr9]"i"(offsetof(context_t, fpu.fpr[9])),
746 [fr10]"i"(offsetof(context_t, fpu.fpr[10])),
747 [fr11]"i"(offsetof(context_t, fpu.fpr[11])),
748 [fr12]"i"(offsetof(context_t, fpu.fpr[12])),
749 [fr13]"i"(offsetof(context_t, fpu.fpr[13])),
750 [fr14]"i"(offsetof(context_t, fpu.fpr[14])),
751 [fr15]"i"(offsetof(context_t, fpu.fpr[15])),
752 [msrval]"i"(MSR_FP)
753 );
754 asm volatile(
755 "stfd %%f16,%[fr16](%%r3) \n\t"
756 "stfd %%f17,%[fr17](%%r3) \n\t"
757 "stfd %%f18,%[fr18](%%r3) \n\t"
758 "stfd %%f19,%[fr19](%%r3) \n\t"
759 "stfd %%f20,%[fr20](%%r3) \n\t"
760 "stfd %%f21,%[fr21](%%r3) \n\t"
761 "stfd %%f22,%[fr22](%%r3) \n\t"
762 "stfd %%f23,%[fr23](%%r3) \n\t"
763 "stfd %%f24,%[fr24](%%r3) \n\t"
764 "stfd %%f25,%[fr25](%%r3) \n\t"
765 "stfd %%f26,%[fr26](%%r3) \n\t"
766 "stfd %%f27,%[fr27](%%r3) \n\t"
767 "stfd %%f28,%[fr28](%%r3) \n\t"
768 "stfd %%f29,%[fr29](%%r3) \n\t"
769 "stfd %%f30,%[fr30](%%r3) \n\t"
770 "stfd %%f31,%[fr31](%%r3) \n\t"
771 "mr %%r28,%%r3 \n\t"
772 "mr %%r29,%%r4 \n\t"
773 "mr %%r30,%%r5 \n\t"
774 "mtsrr0 %%r5 \n\t"
775 "lis %%r9, %[msrval]@ha \n\t"
776 "ori %%r9,%%r9, %[msrval]@l \n\t"
777 "mtsrr1 %%r9 \n\t"
778 "sync; isync; rfi"
779 ::
780 [fr16]"i"(offsetof(context_t, fpu.fpr[16])),
781 [fr17]"i"(offsetof(context_t, fpu.fpr[17])),
782 [fr18]"i"(offsetof(context_t, fpu.fpr[18])),
783 [fr19]"i"(offsetof(context_t, fpu.fpr[19])),
784 [fr20]"i"(offsetof(context_t, fpu.fpr[20])),
785 [fr21]"i"(offsetof(context_t, fpu.fpr[21])),
786 [fr22]"i"(offsetof(context_t, fpu.fpr[22])),
787 [fr23]"i"(offsetof(context_t, fpu.fpr[23])),
788 [fr24]"i"(offsetof(context_t, fpu.fpr[24])),
789 [fr25]"i"(offsetof(context_t, fpu.fpr[25])),
790 [fr26]"i"(offsetof(context_t, fpu.fpr[26])),
791 [fr27]"i"(offsetof(context_t, fpu.fpr[27])),
792 [fr28]"i"(offsetof(context_t, fpu.fpr[28])),
793 [fr29]"i"(offsetof(context_t, fpu.fpr[29])),
794 [fr30]"i"(offsetof(context_t, fpu.fpr[30])),
795 [fr31]"i"(offsetof(context_t, fpu.fpr[31])),
796 [msrval]"i"(MSR_ME|MSR_FP|MSR_IS|MSR_DS)
797
798 );
799 }
800
801 /*
802 * Return from interrupt - restores the context passed as a parameter in %r3
803 * register.
804 */
805 static void __attribute__((used)) __core_LeaveInterrupt()
806 {
807 asm volatile(".section .aros.init,\"ax\"\n\t.align 5\n\t.globl core_LeaveInterrupt\n\t.type core_LeaveInterrupt,@function\n"
808 "core_LeaveInterrupt: \n\t"
809 "lwz %%r31,%[gpr31](%%r3) \n\t"
810 "lwz %%r30,%[gpr30](%%r3) \n\t"
811 "lwz %%r29,%[gpr29](%%r3) \n\t"
812 "lwz %%r28,%[gpr28](%%r3) \n\t"
813 "lwz %%r27,%[gpr27](%%r3) \n\t"
814 "lwz %%r26,%[gpr26](%%r3) \n\t"
815 "lwz %%r25,%[gpr25](%%r3) \n\t"
816 "lwz %%r24,%[gpr24](%%r3) \n\t"
817 "lwz %%r23,%[gpr23](%%r3) \n\t"
818 "lwz %%r22,%[gpr22](%%r3) \n\t"
819 "lwz %%r21,%[gpr21](%%r3) \n\t"
820 "lwz %%r20,%[gpr20](%%r3) \n\t"
821 "lwz %%r19,%[gpr19](%%r3) \n\t"
822 "lwz %%r18,%[gpr18](%%r3) \n\t"
823 "lwz %%r17,%[gpr17](%%r3) \n\t"
824 "lwz %%r16,%[gpr16](%%r3) \n\t"
825 "lwz %%r15,%[gpr15](%%r3) \n\t"
826 "lwz %%r14,%[gpr14](%%r3) \n\t"
827 "lwz %%r13,%[gpr13](%%r3) \n\t"
828 "lwz %%r12,%[gpr12](%%r3) \n\t"
829 ::
830 [gpr12]"i"(offsetof(regs_t, gpr[12])),
831 [gpr13]"i"(offsetof(regs_t, gpr[13])),
832 [gpr14]"i"(offsetof(regs_t, gpr[14])),
833 [gpr15]"i"(offsetof(regs_t, gpr[15])),
834 [gpr16]"i"(offsetof(regs_t, gpr[16])),
835 [gpr17]"i"(offsetof(regs_t, gpr[17])),
836 [gpr18]"i"(offsetof(regs_t, gpr[18])),
837 [gpr19]"i"(offsetof(regs_t, gpr[19])),
838 [gpr20]"i"(offsetof(regs_t, gpr[20])),
839 [gpr21]"i"(offsetof(regs_t, gpr[21])),
840 [gpr22]"i"(offsetof(regs_t, gpr[22])),
841 [gpr23]"i"(offsetof(regs_t, gpr[23])),
842 [gpr24]"i"(offsetof(regs_t, gpr[24])),
843 [gpr25]"i"(offsetof(regs_t, gpr[25])),
844 [gpr26]"i"(offsetof(regs_t, gpr[26])),
845 [gpr27]"i"(offsetof(regs_t, gpr[27])),
846 [gpr28]"i"(offsetof(regs_t, gpr[28])),
847 [gpr29]"i"(offsetof(regs_t, gpr[29])),
848 [gpr30]"i"(offsetof(regs_t, gpr[30])),
849 [gpr31]"i"(offsetof(regs_t, gpr[31]))
850 );
851
852 asm volatile(
853 "lfd %%f0,%[fpscr](%%r3) \n\t"
854 "mtfsf 255,%%f0 \n\t"
855 "lfd %%f0,%[fr0](%%r3) \n\t"
856 "lfd %%f1,%[fr1](%%r3) \n\t"
857 "lfd %%f2,%[fr2](%%r3) \n\t"
858 "lfd %%f3,%[fr3](%%r3) \n\t"
859 "lfd %%f4,%[fr4](%%r3) \n\t"
860 "lfd %%f5,%[fr5](%%r3) \n\t"
861 "lfd %%f6,%[fr6](%%r3) \n\t"
862 "lfd %%f7,%[fr7](%%r3) \n\t"
863 "lfd %%f8,%[fr8](%%r3) \n\t"
864 "lfd %%f9,%[fr9](%%r3) \n\t"
865 "lfd %%f10,%[fr10](%%r3) \n\t"
866 "lfd %%f11,%[fr11](%%r3) \n\t"
867 "lfd %%f12,%[fr12](%%r3) \n\t"
868 "lfd %%f13,%[fr13](%%r3) \n\t"
869 "lfd %%f14,%[fr14](%%r3) \n\t"
870 "lfd %%f15,%[fr15](%%r3) \n\t"
871 ::
872 [fpscr]"i"(offsetof(context_t, fpu.fpscr)),
873 [fr0]"i"(offsetof(context_t, fpu.fpr[0])),
874 [fr1]"i"(offsetof(context_t, fpu.fpr[1])),
875 [fr2]"i"(offsetof(context_t, fpu.fpr[2])),
876 [fr3]"i"(offsetof(context_t, fpu.fpr[3])),
877 [fr4]"i"(offsetof(context_t, fpu.fpr[4])),
878 [fr5]"i"(offsetof(context_t, fpu.fpr[5])),
879 [fr6]"i"(offsetof(context_t, fpu.fpr[6])),
880 [fr7]"i"(offsetof(context_t, fpu.fpr[7])),
881 [fr8]"i"(offsetof(context_t, fpu.fpr[8])),
882 [fr9]"i"(offsetof(context_t, fpu.fpr[9])),
883 [fr10]"i"(offsetof(context_t, fpu.fpr[10])),
884 [fr11]"i"(offsetof(context_t, fpu.fpr[11])),
885 [fr12]"i"(offsetof(context_t, fpu.fpr[12])),
886 [fr13]"i"(offsetof(context_t, fpu.fpr[13])),
887 [fr14]"i"(offsetof(context_t, fpu.fpr[14])),
888 [fr15]"i"(offsetof(context_t, fpu.fpr[15]))
889 );
890 asm volatile(
891 "lfd %%f16,%[fr16](%%r3) \n\t"
892 "lfd %%f17,%[fr17](%%r3) \n\t"
893 "lfd %%f18,%[fr18](%%r3) \n\t"
894 "lfd %%f19,%[fr19](%%r3) \n\t"
895 "lfd %%f20,%[fr20](%%r3) \n\t"
896 "lfd %%f21,%[fr21](%%r3) \n\t"
897 "lfd %%f22,%[fr22](%%r3) \n\t"
898 "lfd %%f23,%[fr23](%%r3) \n\t"
899 "lfd %%f24,%[fr24](%%r3) \n\t"
900 "lfd %%f25,%[fr25](%%r3) \n\t"
901 "lfd %%f26,%[fr26](%%r3) \n\t"
902 "lfd %%f27,%[fr27](%%r3) \n\t"
903 "lfd %%f28,%[fr28](%%r3) \n\t"
904 "lfd %%f29,%[fr29](%%r3) \n\t"
905 "lfd %%f30,%[fr30](%%r3) \n\t"
906 "lfd %%f31,%[fr31](%%r3) \n\t"
907 ::
908 [fr16]"i"(offsetof(context_t, fpu.fpr[16])),
909 [fr17]"i"(offsetof(context_t, fpu.fpr[17])),
910 [fr18]"i"(offsetof(context_t, fpu.fpr[18])),
911 [fr19]"i"(offsetof(context_t, fpu.fpr[19])),
912 [fr20]"i"(offsetof(context_t, fpu.fpr[20])),
913 [fr21]"i"(offsetof(context_t, fpu.fpr[21])),
914 [fr22]"i"(offsetof(context_t, fpu.fpr[22])),
915 [fr23]"i"(offsetof(context_t, fpu.fpr[23])),
916 [fr24]"i"(offsetof(context_t, fpu.fpr[24])),
917 [fr25]"i"(offsetof(context_t, fpu.fpr[25])),
918 [fr26]"i"(offsetof(context_t, fpu.fpr[26])),
919 [fr27]"i"(offsetof(context_t, fpu.fpr[27])),
920 [fr28]"i"(offsetof(context_t, fpu.fpr[28])),
921 [fr29]"i"(offsetof(context_t, fpu.fpr[29])),
922 [fr30]"i"(offsetof(context_t, fpu.fpr[30])),
923 [fr31]"i"(offsetof(context_t, fpu.fpr[31]))
924 );
925
926
927 asm volatile(
928 "lwz %%r11,%[gpr11](%%r3) \n\t"
929 "lwz %%r0,%[srr0](%%r3) \n\t"
930 "mtsrr0 %%r0 \n\t"
931 "lwz %%r0,%[srr1](%%r3) \n\t"
932 "rlwinm %%r0,%%r0,0,14,12 \n\t"
933 "mtsrr1 %%r0 \n\t"
934 "lwz %%r0,%[ctr](%%r3) \n\t"
935 "mtctr %%r0 \n\t"
936 "lwz %%r0,%[lr](%%r3) \n\t"
937 "mtlr %%r0 \n\t"
938 "lwz %%r0,%[xer](%%r3) \n\t"
939 "mtxer %%r0 \n\t"
940 "lwz %%r10,%[gpr10](%%r3) \n\t"
941 "lwz %%r9,%[gpr9](%%r3) \n\t"
942 "lwz %%r8,%[gpr8](%%r3) \n\t"
943 "lwz %%r7,%[gpr7](%%r3) \n\t"
944 "lwz %%r6,%[gpr6](%%r3) \n\t"
945 "lwz %%r5,%[gpr5](%%r3) \n\t"
946 "lwz %%r4,%[gpr4](%%r3) \n\t"
947 "lwz %%r0,%[gpr3](%%r3) \n\t"
948 "mtsprg1 %%r0 \n\t"
949 "lwz %%r2,%[gpr2](%%r3) \n\t"
950 "stwcx. %%r0,0,%%r1 \n\t"
951 "lwz %%r0,%[ccr](%%r3) \n\t"
952 "mtcr %%r0 \n\t"
953 "lwz %%r1,%[gpr1](%%r3) \n\t"
954 "lwz %%r0,%[gpr0](%%r3) \n\t"
955 "mfsprg1 %%r3 \n\t"
956 "sync; isync; rfi"
957 ::
958 [ccr]"i"(offsetof(regs_t, ccr)), /* */
959 [srr0]"i"(offsetof(regs_t, srr0)), /* */
960 [srr1]"i"(offsetof(regs_t, srr1)),/* */
961 [ctr]"i"(offsetof(regs_t, ctr)),/**/
962 [lr]"i"(offsetof(regs_t, lr)),/**/
963 [xer]"i"(offsetof(regs_t, xer)),
964 [gpr0]"i"(offsetof(regs_t, gpr[0])),
965 [gpr1]"i"(offsetof(regs_t, gpr[1])),
966 [gpr2]"i"(offsetof(regs_t, gpr[2])),
967 [gpr3]"i"(offsetof(regs_t, gpr[3])),
968 [gpr4]"i"(offsetof(regs_t, gpr[4])),
969 [gpr5]"i"(offsetof(regs_t, gpr[5])),
970 [gpr6]"i"(offsetof(regs_t, gpr[6])),
971 [gpr7]"i"(offsetof(regs_t, gpr[7])),
972 [gpr8]"i"(offsetof(regs_t, gpr[8])),
973 [gpr9]"i"(offsetof(regs_t, gpr[9])),
974 [gpr10]"i"(offsetof(regs_t, gpr[10])),
975 [gpr11]"i"(offsetof(regs_t, gpr[11]))
976 );
977 }
Mirror of AROS' svn.