1 /*
2 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
3 * Copyright (C) 1995, 1996 TooLs GmbH.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by TooLs GmbH.
17 * 4. The name of TooLs GmbH may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31 /*
32 * Copyright (C) 2001 Benno Rice
33 * All rights reserved.
34 *
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
37 * are met:
38 * 1. Redistributions of source code must retain the above copyright
39 * notice, this list of conditions and the following disclaimer.
40 * 2. Redistributions in binary form must reproduce the above copyright
41 * notice, this list of conditions and the following disclaimer in the
42 * documentation and/or other materials provided with the distribution.
43 *
44 * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
45 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
46 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
47 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
49 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
50 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
51 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
52 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
53 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
54 * $NetBSD: machdep.c,v 1.74.2.1 2000/11/01 16:13:48 tv Exp $
55 */
56
57 #include <sys/cdefs.h>
58 __FBSDID("$FreeBSD: releng/5.2/sys/powerpc/powerpc/machdep.c 122364 2003-11-09 20:31:04Z marcel $");
59
60 #include "opt_ddb.h"
61 #include "opt_compat.h"
62 #include "opt_kstack_pages.h"
63 #include "opt_msgbuf.h"
64
65 #include <sys/param.h>
66 #include <sys/systm.h>
67 #include <sys/eventhandler.h>
68 #include <sys/imgact.h>
69 #include <sys/sysproto.h>
70 #include <sys/lock.h>
71 #include <sys/mutex.h>
72 #include <sys/ktr.h>
73 #include <sys/signalvar.h>
74 #include <sys/kernel.h>
75 #include <sys/proc.h>
76 #include <sys/malloc.h>
77 #include <sys/reboot.h>
78 #include <sys/bio.h>
79 #include <sys/buf.h>
80 #include <sys/bus.h>
81 #include <sys/mbuf.h>
82 #include <sys/vmmeter.h>
83 #include <sys/msgbuf.h>
84 #include <sys/exec.h>
85 #include <sys/sysctl.h>
86 #include <sys/uio.h>
87 #include <sys/linker.h>
88 #include <sys/cons.h>
89 #include <sys/ucontext.h>
90 #include <sys/sysent.h>
91 #include <net/netisr.h>
92 #include <vm/vm.h>
93 #include <vm/vm_kern.h>
94 #include <vm/vm_page.h>
95 #include <vm/vm_map.h>
96 #include <vm/vm_extern.h>
97 #include <vm/vm_object.h>
98 #include <vm/vm_pager.h>
99 #include <sys/user.h>
100 #include <sys/ptrace.h>
101 #include <machine/bat.h>
102 #include <machine/clock.h>
103 #include <machine/md_var.h>
104 #include <machine/metadata.h>
105 #include <machine/reg.h>
106 #include <machine/fpu.h>
107 #include <machine/vmparam.h>
108 #include <machine/elf.h>
109 #include <machine/trap.h>
110 #include <machine/powerpc.h>
111 #include <dev/ofw/openfirm.h>
112 #include <ddb/ddb.h>
113 #include <sys/vnode.h>
114 #include <machine/sigframe.h>
115
116 int cold = 1;
117
118 char pcpu0[PAGE_SIZE];
119 char uarea0[UAREA_PAGES * PAGE_SIZE];
120 struct trapframe frame0;
121
122 vm_offset_t kstack0;
123 vm_offset_t kstack0_phys;
124
125 char machine[] = "powerpc";
126 SYSCTL_STRING(_hw, HW_MACHINE, machine, CTLFLAG_RD, machine, 0, "");
127
128 static char model[128];
129 SYSCTL_STRING(_hw, HW_MODEL, model, CTLFLAG_RD, model, 0, "");
130
131 static int cacheline_size = CACHELINESIZE;
132 SYSCTL_INT(_machdep, CPU_CACHELINE, cacheline_size,
133 CTLFLAG_RD, &cacheline_size, 0, "");
134
135 #ifdef DDB
136 /* start and end of kernel symbol table */
137 void *ksym_start, *ksym_end;
138 #endif /* DDB */
139
140 static void cpu_startup(void *);
141 SYSINIT(cpu, SI_SUB_CPU, SI_ORDER_FIRST, cpu_startup, NULL)
142
143 void powerpc_init(u_int, u_int, u_int, void *);
144
145 int save_ofw_mapping(void);
146 int restore_ofw_mapping(void);
147
148 void install_extint(void (*)(void));
149
150 int setfault(faultbuf); /* defined in locore.S */
151
152 long Maxmem = 0;
153
154 struct pmap ofw_pmap;
155 extern int ofmsr;
156
157 struct bat battable[16];
158
159 struct kva_md_info kmi;
160
161 static void
162 powerpc_ofw_shutdown(void *junk, int howto)
163 {
164 if (howto & RB_HALT) {
165 OF_exit();
166 }
167 }
168
169 static void
170 cpu_startup(void *dummy)
171 {
172
173 /*
174 * Initialise the decrementer-based clock.
175 */
176 decr_init();
177
178 /*
179 * Good {morning,afternoon,evening,night}.
180 */
181 cpu_setup(PCPU_GET(cpuid));
182
183 /* startrtclock(); */
184 #ifdef PERFMON
185 perfmon_init();
186 #endif
187 printf("real memory = %ld (%ld MB)\n", ptoa(Maxmem),
188 ptoa(Maxmem) / 1048576);
189
190 /*
191 * Display any holes after the first chunk of extended memory.
192 */
193 if (bootverbose) {
194 int indx;
195
196 printf("Physical memory chunk(s):\n");
197 for (indx = 0; phys_avail[indx + 1] != 0; indx += 2) {
198 int size1 = phys_avail[indx + 1] - phys_avail[indx];
199
200 printf("0x%08x - 0x%08x, %d bytes (%d pages)\n",
201 phys_avail[indx], phys_avail[indx + 1] - 1, size1,
202 size1 / PAGE_SIZE);
203 }
204 }
205
206 vm_ksubmap_init(&kmi);
207
208 printf("avail memory = %ld (%ld MB)\n", ptoa(cnt.v_free_count),
209 ptoa(cnt.v_free_count) / 1048576);
210
211 /*
212 * Set up buffers, so they can be used to read disk labels.
213 */
214 bufinit();
215 vm_pager_bufferinit();
216
217 EVENTHANDLER_REGISTER(shutdown_final, powerpc_ofw_shutdown, 0,
218 SHUTDOWN_PRI_LAST);
219
220 #ifdef SMP
221 /*
222 * OK, enough kmem_alloc/malloc state should be up, lets get on with it!
223 */
224 mp_start(); /* fire up the secondaries */
225 mp_announce();
226 #endif /* SMP */
227 }
228
229 extern char kernel_text[], _end[];
230
231 extern void *trapcode, *trapsize;
232 extern void *alitrap, *alisize;
233 extern void *dsitrap, *dsisize;
234 extern void *isitrap, *isisize;
235 extern void *decrint, *decrsize;
236 extern void *tlbimiss, *tlbimsize;
237 extern void *tlbdlmiss, *tlbdlmsize;
238 extern void *tlbdsmiss, *tlbdsmsize;
239 extern void *extint, *extsize;
240
241 #if 0 /* XXX: interrupt handler. We'll get to this later */
242 extern void ext_intr(void);
243 #endif
244
245 #ifdef DDB
246 extern ddblow, ddbsize;
247 #endif
248 #ifdef IPKDB
249 extern ipkdblow, ipkdbsize;
250 #endif
251
252 void
253 powerpc_init(u_int startkernel, u_int endkernel, u_int basekernel, void *mdp)
254 {
255 struct pcpu *pc;
256 vm_offset_t end, off;
257 void *kmdp;
258
259 end = 0;
260 kmdp = NULL;
261
262 /*
263 * Parse metadata if present and fetch parameters. Must be done
264 * before console is inited so cninit gets the right value of
265 * boothowto.
266 */
267 if (mdp != NULL) {
268 preload_metadata = mdp;
269 kmdp = preload_search_by_type("elf kernel");
270 if (kmdp != NULL) {
271 boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);
272 kern_envp = MD_FETCH(kmdp, MODINFOMD_ENVP, char *);
273 end = MD_FETCH(kmdp, MODINFOMD_KERNEND, vm_offset_t);
274 }
275 }
276
277 /*
278 * Initialize the console before printing anything.
279 */
280 cninit();
281
282 /*
283 * Complain if there is no metadata.
284 */
285 if (mdp == NULL || kmdp == NULL) {
286 printf("powerpc_init: no loader metadata.\n");
287 }
288
289 #ifdef DDB
290 kdb_init();
291 #endif
292 /*
293 * XXX: Initialize the interrupt tables.
294 */
295 bcopy(&trapcode, (void *)EXC_MCHK, (size_t)&trapsize);
296 bcopy(&dsitrap, (void *)EXC_DSI, (size_t)&dsisize);
297 bcopy(&isitrap, (void *)EXC_ISI, (size_t)&isisize);
298 bcopy(&trapcode, (void *)EXC_EXI, (size_t)&trapsize);
299 bcopy(&trapcode, (void *)EXC_ALI, (size_t)&trapsize);
300 bcopy(&trapcode, (void *)EXC_PGM, (size_t)&trapsize);
301 bcopy(&trapcode, (void *)EXC_FPU, (size_t)&trapsize);
302 bcopy(&trapcode, (void *)EXC_DECR, (size_t)&trapsize);
303 bcopy(&trapcode, (void *)EXC_SC, (size_t)&trapsize);
304 bcopy(&trapcode, (void *)EXC_TRC, (size_t)&trapsize);
305 __syncicache(EXC_RSVD, EXC_LAST - EXC_RSVD);
306
307 /*
308 * Start initializing proc0 and thread0.
309 */
310 proc_linkup(&proc0, &ksegrp0, &kse0, &thread0);
311 proc0.p_uarea = (struct user *)uarea0;
312 proc0.p_stats = &proc0.p_uarea->u_stats;
313 thread0.td_frame = &frame0;
314
315 /*
316 * Set up per-cpu data.
317 */
318 pc = (struct pcpu *)(pcpu0 + PAGE_SIZE) - 1;
319 pcpu_init(pc, 0, sizeof(struct pcpu));
320 pc->pc_curthread = &thread0;
321 pc->pc_curpcb = thread0.td_pcb;
322 pc->pc_cpuid = 0;
323 /* pc->pc_mid = mid; */
324
325 __asm __volatile("mtsprg 0, %0" :: "r"(pc));
326
327 mutex_init();
328
329 /*
330 * Make sure translation has been enabled
331 */
332 mtmsr(mfmsr() | PSL_IR|PSL_DR|PSL_ME|PSL_RI);
333
334 /*
335 * Initialise virtual memory.
336 */
337 pmap_bootstrap(startkernel, endkernel);
338
339 /*
340 * Initialize tunables.
341 */
342 init_param1();
343 init_param2(physmem);
344
345 /*
346 * Finish setting up thread0.
347 */
348 thread0.td_kstack = kstack0;
349 thread0.td_pcb = (struct pcb *)
350 (thread0.td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1;
351
352 /*
353 * Map and initialise the message buffer.
354 */
355 for (off = 0; off < round_page(MSGBUF_SIZE); off += PAGE_SIZE)
356 pmap_kenter((vm_offset_t)msgbufp + off, msgbuf_phys + off);
357 msgbufinit(msgbufp, MSGBUF_SIZE);
358 }
359
360 void
361 bzero(void *buf, size_t len)
362 {
363 caddr_t p;
364
365 p = buf;
366
367 while (((vm_offset_t) p & (sizeof(u_long) - 1)) && len) {
368 *p++ = 0;
369 len--;
370 }
371
372 while (len >= sizeof(u_long) * 8) {
373 *(u_long*) p = 0;
374 *((u_long*) p + 1) = 0;
375 *((u_long*) p + 2) = 0;
376 *((u_long*) p + 3) = 0;
377 len -= sizeof(u_long) * 8;
378 *((u_long*) p + 4) = 0;
379 *((u_long*) p + 5) = 0;
380 *((u_long*) p + 6) = 0;
381 *((u_long*) p + 7) = 0;
382 p += sizeof(u_long) * 8;
383 }
384
385 while (len >= sizeof(u_long)) {
386 *(u_long*) p = 0;
387 len -= sizeof(u_long);
388 p += sizeof(u_long);
389 }
390
391 while (len) {
392 *p++ = 0;
393 len--;
394 }
395 }
396
397 void
398 sendsig(sig_t catcher, int sig, sigset_t *mask, u_long code)
399 {
400 struct trapframe *tf;
401 struct sigframe *sfp;
402 struct sigacts *psp;
403 struct sigframe sf;
404 struct thread *td;
405 struct proc *p;
406 int oonstack, rndfsize;
407
408 td = curthread;
409 p = td->td_proc;
410 PROC_LOCK_ASSERT(p, MA_OWNED);
411 psp = p->p_sigacts;
412 mtx_assert(&psp->ps_mtx, MA_OWNED);
413 tf = td->td_frame;
414 oonstack = sigonstack(tf->fixreg[1]);
415
416 rndfsize = ((sizeof(sf) + 15) / 16) * 16;
417
418 CTR4(KTR_SIG, "sendsig: td=%p (%s) catcher=%p sig=%d", td, p->p_comm,
419 catcher, sig);
420
421 /*
422 * Save user context
423 */
424 memset(&sf, 0, sizeof(sf));
425 sf.sf_uc.uc_sigmask = *mask;
426 sf.sf_uc.uc_stack = p->p_sigstk;
427 sf.sf_uc.uc_stack.ss_flags = (p->p_flag & P_ALTSTACK)
428 ? ((oonstack) ? SS_ONSTACK : 0) : SS_DISABLE;
429
430 sf.sf_uc.uc_mcontext.mc_onstack = (oonstack) ? 1 : 0;
431 memcpy(&sf.sf_uc.uc_mcontext.mc_frame, tf, sizeof(struct trapframe));
432
433 /*
434 * Allocate and validate space for the signal handler context.
435 */
436 if ((p->p_flag & P_ALTSTACK) != 0 && !oonstack &&
437 SIGISMEMBER(psp->ps_sigonstack, sig)) {
438 sfp = (struct sigframe *)((caddr_t)p->p_sigstk.ss_sp +
439 p->p_sigstk.ss_size - rndfsize);
440 } else {
441 sfp = (struct sigframe *)(tf->fixreg[1] - rndfsize);
442 }
443
444 /*
445 * Translate the signal if appropriate (Linux emu ?)
446 */
447 if (p->p_sysent->sv_sigtbl && sig <= p->p_sysent->sv_sigsize)
448 sig = p->p_sysent->sv_sigtbl[_SIG_IDX(sig)];
449
450 /*
451 * Save the floating-point state, if necessary, then copy it.
452 */
453 /* XXX */
454
455 /*
456 * Set up the registers to return to sigcode.
457 *
458 * r1/sp - sigframe ptr
459 * lr - sig function, dispatched to by blrl in trampoline
460 * r3 - sig number
461 * r4 - SIGINFO ? &siginfo : exception code
462 * r5 - user context
463 * srr0 - trampoline function addr
464 */
465 tf->lr = (register_t)catcher;
466 tf->fixreg[1] = (register_t)sfp;
467 tf->fixreg[FIRSTARG] = sig;
468 tf->fixreg[FIRSTARG+2] = (register_t)&sfp->sf_uc;
469 if (SIGISMEMBER(psp->ps_siginfo, sig)) {
470 /*
471 * Signal handler installed with SA_SIGINFO.
472 */
473 tf->fixreg[FIRSTARG+1] = (register_t)&sfp->sf_si;
474
475 /*
476 * Fill siginfo structure.
477 */
478 sf.sf_si.si_signo = sig;
479 sf.sf_si.si_code = code;
480 sf.sf_si.si_addr = (void *)tf->srr0;
481 } else {
482 /* Old FreeBSD-style arguments. */
483 tf->fixreg[FIRSTARG+1] = code;
484 }
485 mtx_unlock(&psp->ps_mtx);
486 PROC_UNLOCK(p);
487
488 tf->srr0 = (register_t)(PS_STRINGS - *(p->p_sysent->sv_szsigcode));
489
490 /*
491 * copy the frame out to userland.
492 */
493 if (copyout((caddr_t)&sf, (caddr_t)sfp, sizeof(sf)) != 0) {
494 /*
495 * Process has trashed its stack. Kill it.
496 */
497 CTR2(KTR_SIG, "sendsig: sigexit td=%p sfp=%p", td, sfp);
498 PROC_LOCK(p);
499 sigexit(td, SIGILL);
500 }
501
502 CTR3(KTR_SIG, "sendsig: return td=%p pc=%#x sp=%#x", td,
503 tf->srr0, tf->fixreg[1]);
504
505 PROC_LOCK(p);
506 mtx_lock(&psp->ps_mtx);
507 }
508
509 /*
510 * Build siginfo_t for SA thread
511 */
512 void
513 cpu_thread_siginfo(int sig, u_long code, siginfo_t *si)
514 {
515 struct proc *p;
516 struct thread *td;
517
518 td = curthread;
519 p = td->td_proc;
520 PROC_LOCK_ASSERT(p, MA_OWNED);
521
522 bzero(si, sizeof(*si));
523 si->si_signo = sig;
524 si->si_code = code;
525 /* XXXKSE fill other fields */
526 }
527
528 int
529 sigreturn(struct thread *td, struct sigreturn_args *uap)
530 {
531 struct trapframe *tf;
532 struct proc *p;
533 ucontext_t uc;
534
535 CTR2(KTR_SIG, "sigreturn: td=%p ucp=%p", td, uap->sigcntxp);
536
537 if (copyin(uap->sigcntxp, &uc, sizeof(uc)) != 0) {
538 CTR1(KTR_SIG, "sigreturn: efault td=%p", td);
539 return (EFAULT);
540 }
541
542 /*
543 * Don't let the user set privileged MSR bits
544 */
545 tf = td->td_frame;
546 if ((uc.uc_mcontext.mc_frame.srr1 & PSL_USERSTATIC) !=
547 (tf->srr1 & PSL_USERSTATIC)) {
548 return (EINVAL);
549 }
550
551 /*
552 * Restore the user-supplied context
553 */
554 memcpy(tf, &uc.uc_mcontext.mc_frame, sizeof(struct trapframe));
555
556 p = td->td_proc;
557 PROC_LOCK(p);
558 td->td_sigmask = uc.uc_sigmask;
559 SIG_CANTMASK(td->td_sigmask);
560 signotify(td);
561 PROC_UNLOCK(p);
562
563 /*
564 * Restore FP state
565 */
566 /* XXX */
567
568 CTR3(KTR_SIG, "sigreturn: return td=%p pc=%#x sp=%#x",
569 td, tf->srr0, tf->fixreg[1]);
570
571 return (EJUSTRETURN);
572 }
573
574 #ifdef COMPAT_FREEBSD4
575 int
576 freebsd4_sigreturn(struct thread *td, struct freebsd4_sigreturn_args *uap)
577 {
578
579 return sigreturn(td, (struct sigreturn_args *)uap);
580 }
581 #endif
582
583 int
584 get_mcontext(struct thread *td, mcontext_t *mcp, int flags)
585 {
586
587 return (ENOSYS);
588 }
589
590 int
591 set_mcontext(struct thread *td, const mcontext_t *mcp)
592 {
593
594 return (ENOSYS);
595 }
596
597 void
598 cpu_boot(int howto)
599 {
600 }
601
602 /*
603 * Shutdown the CPU as much as possible.
604 */
605 void
606 cpu_halt(void)
607 {
608
609 OF_exit();
610 }
611
612 void
613 cpu_idle(void)
614 {
615 /* Insert code to halt (until next interrupt) for the idle loop */
616 }
617
618 /*
619 * Set set up registers on exec.
620 */
621 void
622 exec_setregs(struct thread *td, u_long entry, u_long stack, u_long ps_strings)
623 {
624 struct trapframe *tf;
625 struct ps_strings arginfo;
626
627 tf = trapframe(td);
628 bzero(tf, sizeof *tf);
629 tf->fixreg[1] = -roundup(-stack + 8, 16);
630
631 /*
632 * XXX Machine-independent code has already copied arguments and
633 * XXX environment to userland. Get them back here.
634 */
635 (void)copyin((char *)PS_STRINGS, &arginfo, sizeof(arginfo));
636
637 /*
638 * Set up arguments for _start():
639 * _start(argc, argv, envp, obj, cleanup, ps_strings);
640 *
641 * Notes:
642 * - obj and cleanup are the auxilliary and termination
643 * vectors. They are fixed up by ld.elf_so.
644 * - ps_strings is a NetBSD extention, and will be
645 * ignored by executables which are strictly
646 * compliant with the SVR4 ABI.
647 *
648 * XXX We have to set both regs and retval here due to different
649 * XXX calling convention in trap.c and init_main.c.
650 */
651 /*
652 * XXX PG: these get overwritten in the syscall return code.
653 * execve() should return EJUSTRETURN, like it does on NetBSD.
654 * Emulate by setting the syscall return value cells. The
655 * registers still have to be set for init's fork trampoline.
656 */
657 td->td_retval[0] = arginfo.ps_nargvstr;
658 td->td_retval[1] = (register_t)arginfo.ps_argvstr;
659 tf->fixreg[3] = arginfo.ps_nargvstr;
660 tf->fixreg[4] = (register_t)arginfo.ps_argvstr;
661 tf->fixreg[5] = (register_t)arginfo.ps_envstr;
662 tf->fixreg[6] = 0; /* auxillary vector */
663 tf->fixreg[7] = 0; /* termination vector */
664 tf->fixreg[8] = (register_t)PS_STRINGS; /* NetBSD extension */
665
666 tf->srr0 = entry;
667 tf->srr1 = PSL_MBO | PSL_USERSET | PSL_FE_DFLT;
668 td->td_pcb->pcb_flags = 0;
669 }
670
671 #if !defined(DDB)
672 void
673 Debugger(const char *msg)
674 {
675
676 printf("Debugger(\"%s\") called.\n", msg);
677 }
678 #endif /* !defined(DDB) */
679
680 /* XXX: dummy {fill,set}_[fp]regs */
681 int
682 fill_regs(struct thread *td, struct reg *regs)
683 {
684
685 return (ENOSYS);
686 }
687
688 int
689 fill_dbregs(struct thread *td, struct dbreg *dbregs)
690 {
691
692 return (ENOSYS);
693 }
694
695 int
696 fill_fpregs(struct thread *td, struct fpreg *fpregs)
697 {
698
699 return (ENOSYS);
700 }
701
702 int
703 set_regs(struct thread *td, struct reg *regs)
704 {
705
706 return (ENOSYS);
707 }
708
709 int
710 set_dbregs(struct thread *td, struct dbreg *dbregs)
711 {
712
713 return (ENOSYS);
714 }
715
716 int
717 set_fpregs(struct thread *td, struct fpreg *fpregs)
718 {
719
720 return (ENOSYS);
721 }
722
723 int
724 ptrace_set_pc(struct thread *td, unsigned long addr)
725 {
726
727 /* XXX: coming soon... */
728 return (ENOSYS);
729 }
730
731 int
732 ptrace_single_step(struct thread *td)
733 {
734
735 /* XXX: coming soon... */
736 return (ENOSYS);
737 }
738
739 /*
740 * Initialise a struct pcpu.
741 */
742 void
743 cpu_pcpu_init(struct pcpu *pcpu, int cpuid, size_t sz)
744 {
745
746 pcpu->pc_current_asngen = 1;
747 }
748
749 /*
750 * kcopy(const void *src, void *dst, size_t len);
751 *
752 * Copy len bytes from src to dst, aborting if we encounter a fatal
753 * page fault.
754 *
755 * kcopy() _must_ save and restore the old fault handler since it is
756 * called by uiomove(), which may be in the path of servicing a non-fatal
757 * page fault.
758 */
759 int
760 kcopy(const void *src, void *dst, size_t len)
761 {
762 struct thread *td;
763 faultbuf env, *oldfault;
764 int rv;
765
766 td = PCPU_GET(curthread);
767 oldfault = td->td_pcb->pcb_onfault;
768 if ((rv = setfault(env)) != 0) {
769 td->td_pcb->pcb_onfault = oldfault;
770 return rv;
771 }
772
773 memcpy(dst, src, len);
774
775 td->td_pcb->pcb_onfault = oldfault;
776 return (0);
777 }
778
779
780 intptr_t
781 casuptr(intptr_t *p, intptr_t old, intptr_t new)
782 {
783 return (-1);
784 }
785
Cache object: 322a12e5113737fc20e7ddcb35ff43cd
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