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>
|
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
116int cold = 1;
117
118char pcpu0[PAGE_SIZE];
119char uarea0[UAREA_PAGES * PAGE_SIZE];
120struct trapframe frame0;
121
122vm_offset_t kstack0;
123vm_offset_t kstack0_phys;
124
125char machine[] = "powerpc";
126SYSCTL_STRING(_hw, HW_MACHINE, machine, CTLFLAG_RD, machine, 0, "");
127
128static char model[128];
129SYSCTL_STRING(_hw, HW_MODEL, model, CTLFLAG_RD, model, 0, "");
130
131static int cacheline_size = CACHELINESIZE;
132SYSCTL_INT(_machdep, CPU_CACHELINE, cacheline_size,
133 CTLFLAG_RD, &cacheline_size, 0, "");
134
135#ifdef DDB
136/* start and end of kernel symbol table */
137void *ksym_start, *ksym_end;
138#endif /* DDB */
139
140static void cpu_startup(void *);
141SYSINIT(cpu, SI_SUB_CPU, SI_ORDER_FIRST, cpu_startup, NULL)
142
143void powerpc_init(u_int, u_int, u_int, void *);
144
145int save_ofw_mapping(void);
146int restore_ofw_mapping(void);
147
148void install_extint(void (*)(void));
149
150int setfault(faultbuf); /* defined in locore.S */
151
152long Maxmem = 0;
153
154struct pmap ofw_pmap;
155extern int ofmsr;
156
157struct bat battable[16];
158
159struct kva_md_info kmi;
160
161static void
162powerpc_ofw_shutdown(void *junk, int howto)
163{
164 if (howto & RB_HALT) {
165 OF_exit();
166 }
167}
168
169static void
170cpu_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
229extern char kernel_text[], _end[];
230
231extern void *trapcode, *trapsize;
232extern void *alitrap, *alisize;
233extern void *dsitrap, *dsisize;
234extern void *isitrap, *isisize;
235extern void *decrint, *decrsize;
236extern void *tlbimiss, *tlbimsize;
237extern void *tlbdlmiss, *tlbdlmsize;
238extern void *tlbdsmiss, *tlbdsmsize;
239extern void *extint, *extsize;
240
241#if 0 /* XXX: interrupt handler. We'll get to this later */
242extern void ext_intr(void);
243#endif
244
245#ifdef DDB
246extern ddblow, ddbsize;
247#endif
248#ifdef IPKDB
249extern ipkdblow, ipkdbsize;
250#endif
251
252void
253powerpc_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
360void
361bzero(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
397void
398sendsig(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 */
512void
513cpu_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
528int
529sigreturn(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
575int
576freebsd4_sigreturn(struct thread *td, struct freebsd4_sigreturn_args *uap)
577{
578
579 return sigreturn(td, (struct sigreturn_args *)uap);
580}
581#endif
582
583int
584get_mcontext(struct thread *td, mcontext_t *mcp, int clear_ret)
585{
586
587 return (ENOSYS);
588}
589
590int
591set_mcontext(struct thread *td, const mcontext_t *mcp)
592{
593
594 return (ENOSYS);
595}
596
597void
598cpu_boot(int howto)
599{
600}
601
602/*
603 * Shutdown the CPU as much as possible.
604 */
605void
606cpu_halt(void)
607{
608
609 OF_exit();
610}
611
612/*
613 * Set set up registers on exec.
614 */
615void
616exec_setregs(struct thread *td, u_long entry, u_long stack, u_long ps_strings)
617{
618 struct trapframe *tf;
619 struct ps_strings arginfo;
620
621 tf = trapframe(td);
622 bzero(tf, sizeof *tf);
623 tf->fixreg[1] = -roundup(-stack + 8, 16);
624
625 /*
626 * XXX Machine-independent code has already copied arguments and
627 * XXX environment to userland. Get them back here.
628 */
629 (void)copyin((char *)PS_STRINGS, &arginfo, sizeof(arginfo));
630
631 /*
632 * Set up arguments for _start():
633 * _start(argc, argv, envp, obj, cleanup, ps_strings);
634 *
635 * Notes:
636 * - obj and cleanup are the auxilliary and termination
637 * vectors. They are fixed up by ld.elf_so.
638 * - ps_strings is a NetBSD extention, and will be
639 * ignored by executables which are strictly
640 * compliant with the SVR4 ABI.
641 *
642 * XXX We have to set both regs and retval here due to different
643 * XXX calling convention in trap.c and init_main.c.
644 */
645 /*
646 * XXX PG: these get overwritten in the syscall return code.
647 * execve() should return EJUSTRETURN, like it does on NetBSD.
648 * Emulate by setting the syscall return value cells. The
649 * registers still have to be set for init's fork trampoline.
650 */
651 td->td_retval[0] = arginfo.ps_nargvstr;
652 td->td_retval[1] = (register_t)arginfo.ps_argvstr;
653 tf->fixreg[3] = arginfo.ps_nargvstr;
654 tf->fixreg[4] = (register_t)arginfo.ps_argvstr;
655 tf->fixreg[5] = (register_t)arginfo.ps_envstr;
656 tf->fixreg[6] = 0; /* auxillary vector */
657 tf->fixreg[7] = 0; /* termination vector */
658 tf->fixreg[8] = (register_t)PS_STRINGS; /* NetBSD extension */
659
660 tf->srr0 = entry;
661 tf->srr1 = PSL_MBO | PSL_USERSET | PSL_FE_DFLT;
662 td->td_pcb->pcb_flags = 0;
663}
664
665#if !defined(DDB)
666void
667Debugger(const char *msg)
668{
669
670 printf("Debugger(\"%s\") called.\n", msg);
671}
672#endif /* !defined(DDB) */
673
674/* XXX: dummy {fill,set}_[fp]regs */
675int
676fill_regs(struct thread *td, struct reg *regs)
677{
678
679 return (ENOSYS);
680}
681
682int
683fill_dbregs(struct thread *td, struct dbreg *dbregs)
684{
685
686 return (ENOSYS);
687}
688
689int
690fill_fpregs(struct thread *td, struct fpreg *fpregs)
691{
692
693 return (ENOSYS);
694}
695
696int
697set_regs(struct thread *td, struct reg *regs)
698{
699
700 return (ENOSYS);
701}
702
703int
704set_dbregs(struct thread *td, struct dbreg *dbregs)
705{
706
707 return (ENOSYS);
708}
709
710int
711set_fpregs(struct thread *td, struct fpreg *fpregs)
712{
713
714 return (ENOSYS);
715}
716
717int
718ptrace_set_pc(struct thread *td, unsigned long addr)
719{
720
721 /* XXX: coming soon... */
722 return (ENOSYS);
723}
724
725int
726ptrace_single_step(struct thread *td)
727{
728
729 /* XXX: coming soon... */
730 return (ENOSYS);
731}
732
733/*
734 * Initialise a struct pcpu.
735 */
736void
737cpu_pcpu_init(struct pcpu *pcpu, int cpuid, size_t sz)
738{
739
740 pcpu->pc_current_asngen = 1;
741}
742
743/*
744 * kcopy(const void *src, void *dst, size_t len);
745 *
746 * Copy len bytes from src to dst, aborting if we encounter a fatal
747 * page fault.
748 *
749 * kcopy() _must_ save and restore the old fault handler since it is
750 * called by uiomove(), which may be in the path of servicing a non-fatal
751 * page fault.
752 */
753int
754kcopy(const void *src, void *dst, size_t len)
755{
756 struct thread *td;
757 faultbuf env, *oldfault;
758 int rv;
759
760 td = PCPU_GET(curthread);
761 oldfault = td->td_pcb->pcb_onfault;
762 if ((rv = setfault(env)) != 0) {
763 td->td_pcb->pcb_onfault = oldfault;
764 return rv;
765 }
766
767 memcpy(dst, src, len);
768
769 td->td_pcb->pcb_onfault = oldfault;
770 return (0);
771}
772
773
774intptr_t
775casuptr(intptr_t *p, intptr_t old, intptr_t new)
776{
777 return (-1);
778}
779
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