1 /*-
2 * Copyright (c) 2001 Jake Burkholder.
3 * Copyright (c) 1992 Terrence R. Lambert.
4 * Copyright (c) 1982, 1987, 1990 The Regents of the University of California.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * William Jolitz.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * from: @(#)machdep.c 7.4 (Berkeley) 6/3/91
35 * from: FreeBSD: src/sys/i386/i386/machdep.c,v 1.477 2001/08/27
36 */
37
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
40
41 #include "opt_compat.h"
42 #include "opt_ddb.h"
43 #include "opt_kstack_pages.h"
44 #include "opt_msgbuf.h"
45
46 #include <sys/param.h>
47 #include <sys/malloc.h>
48 #include <sys/proc.h>
49 #include <sys/systm.h>
50 #include <sys/bio.h>
51 #include <sys/buf.h>
52 #include <sys/bus.h>
53 #include <sys/cpu.h>
54 #include <sys/cons.h>
55 #include <sys/eventhandler.h>
56 #include <sys/exec.h>
57 #include <sys/imgact.h>
58 #include <sys/interrupt.h>
59 #include <sys/kdb.h>
60 #include <sys/kernel.h>
61 #include <sys/ktr.h>
62 #include <sys/linker.h>
63 #include <sys/lock.h>
64 #include <sys/msgbuf.h>
65 #include <sys/mutex.h>
66 #include <sys/pcpu.h>
67 #include <sys/ptrace.h>
68 #include <sys/reboot.h>
69 #include <sys/signalvar.h>
70 #include <sys/smp.h>
71 #include <sys/sysent.h>
72 #include <sys/sysproto.h>
73 #include <sys/timetc.h>
74 #include <sys/ucontext.h>
75
76 #include <dev/ofw/openfirm.h>
77
78 #include <vm/vm.h>
79 #include <vm/vm_extern.h>
80 #include <vm/vm_kern.h>
81 #include <vm/vm_page.h>
82 #include <vm/vm_map.h>
83 #include <vm/vm_object.h>
84 #include <vm/vm_pager.h>
85 #include <vm/vm_param.h>
86
87 #include <ddb/ddb.h>
88
89 #include <machine/bus.h>
90 #include <machine/cache.h>
91 #include <machine/clock.h>
92 #include <machine/cpu.h>
93 #include <machine/fp.h>
94 #include <machine/fsr.h>
95 #include <machine/intr_machdep.h>
96 #include <machine/md_var.h>
97 #include <machine/metadata.h>
98 #include <machine/ofw_machdep.h>
99 #include <machine/ofw_mem.h>
100 #include <machine/pcb.h>
101 #include <machine/pmap.h>
102 #include <machine/pstate.h>
103 #include <machine/reg.h>
104 #include <machine/sigframe.h>
105 #include <machine/smp.h>
106 #include <machine/tick.h>
107 #include <machine/tlb.h>
108 #include <machine/tstate.h>
109 #include <machine/upa.h>
110 #include <machine/ver.h>
111
112 typedef int ofw_vec_t(void *);
113
114 #ifdef DDB
115 extern vm_offset_t ksym_start, ksym_end;
116 #endif
117
118 struct tlb_entry *kernel_tlbs;
119 int kernel_tlb_slots;
120
121 int cold = 1;
122 long Maxmem;
123 long realmem;
124
125 char pcpu0[PCPU_PAGES * PAGE_SIZE];
126 struct trapframe frame0;
127
128 vm_offset_t kstack0;
129 vm_paddr_t kstack0_phys;
130
131 struct kva_md_info kmi;
132
133 u_long ofw_vec;
134 u_long ofw_tba;
135
136 /*
137 * Note: timer quality for CPU's is set low to try and prevent them from
138 * being chosen as the primary timecounter. The CPU counters are not
139 * synchronized among the CPU's so in MP machines this causes problems
140 * when calculating the time. With this value the CPU's should only be
141 * chosen as the primary timecounter as a last resort.
142 */
143
144 #define UP_TICK_QUALITY 1000
145 #define MP_TICK_QUALITY -100
146 static struct timecounter tick_tc;
147
148 char sparc64_model[32];
149
150 static int cpu_use_vis = 1;
151
152 cpu_block_copy_t *cpu_block_copy;
153 cpu_block_zero_t *cpu_block_zero;
154
155 static timecounter_get_t tick_get_timecount;
156 void sparc64_init(caddr_t mdp, u_long o1, u_long o2, u_long o3,
157 ofw_vec_t *vec);
158 void sparc64_shutdown_final(void *dummy, int howto);
159
160 static void cpu_startup(void *);
161 SYSINIT(cpu, SI_SUB_CPU, SI_ORDER_FIRST, cpu_startup, NULL);
162
163 CTASSERT((1 << INT_SHIFT) == sizeof(int));
164 CTASSERT((1 << PTR_SHIFT) == sizeof(char *));
165
166 CTASSERT(sizeof(struct reg) == 256);
167 CTASSERT(sizeof(struct fpreg) == 272);
168 CTASSERT(sizeof(struct __mcontext) == 512);
169
170 CTASSERT((sizeof(struct pcb) & (64 - 1)) == 0);
171 CTASSERT((offsetof(struct pcb, pcb_kfp) & (64 - 1)) == 0);
172 CTASSERT((offsetof(struct pcb, pcb_ufp) & (64 - 1)) == 0);
173 CTASSERT(sizeof(struct pcb) <= ((KSTACK_PAGES * PAGE_SIZE) / 8));
174
175 CTASSERT(sizeof(struct pcpu) <= ((PCPU_PAGES * PAGE_SIZE) / 2));
176
177 static void
178 cpu_startup(void *arg)
179 {
180 vm_paddr_t physsz;
181 int i;
182
183 tick_tc.tc_get_timecount = tick_get_timecount;
184 tick_tc.tc_poll_pps = NULL;
185 tick_tc.tc_counter_mask = ~0u;
186 tick_tc.tc_frequency = tick_freq;
187 tick_tc.tc_name = "tick";
188 tick_tc.tc_quality = UP_TICK_QUALITY;
189 #ifdef SMP
190 /*
191 * We do not know if each CPU's tick counter is synchronized.
192 */
193 if (cpu_mp_probe())
194 tick_tc.tc_quality = MP_TICK_QUALITY;
195 #endif
196
197 tc_init(&tick_tc);
198
199 physsz = 0;
200 for (i = 0; i < sparc64_nmemreg; i++)
201 physsz += sparc64_memreg[i].mr_size;
202 printf("real memory = %lu (%lu MB)\n", physsz,
203 physsz / (1024 * 1024));
204 realmem = (long)physsz;
205
206 vm_ksubmap_init(&kmi);
207
208 bufinit();
209 vm_pager_bufferinit();
210
211 EVENTHANDLER_REGISTER(shutdown_final, sparc64_shutdown_final, NULL,
212 SHUTDOWN_PRI_LAST);
213
214 printf("avail memory = %lu (%lu MB)\n", cnt.v_free_count * PAGE_SIZE,
215 cnt.v_free_count / ((1024 * 1024) / PAGE_SIZE));
216
217 if (bootverbose)
218 printf("machine: %s\n", sparc64_model);
219
220 cpu_identify(rdpr(ver), tick_freq, PCPU_GET(cpuid));
221 }
222
223 void
224 cpu_pcpu_init(struct pcpu *pcpu, int cpuid, size_t size)
225 {
226 struct intr_request *ir;
227 int i;
228
229 pcpu->pc_irtail = &pcpu->pc_irhead;
230 for (i = 0; i < IR_FREE; i++) {
231 ir = &pcpu->pc_irpool[i];
232 ir->ir_next = pcpu->pc_irfree;
233 pcpu->pc_irfree = ir;
234 }
235 }
236
237 unsigned
238 tick_get_timecount(struct timecounter *tc)
239 {
240 return ((unsigned)rd(tick));
241 }
242
243 void
244 sparc64_init(caddr_t mdp, u_long o1, u_long o2, u_long o3, ofw_vec_t *vec)
245 {
246 phandle_t child;
247 phandle_t root;
248 struct pcpu *pc;
249 vm_offset_t end;
250 caddr_t kmdp;
251 u_int clock;
252 char *env;
253 char type[8];
254
255 end = 0;
256 kmdp = NULL;
257
258 /*
259 * Find out what kind of cpu we have first, for anything that changes
260 * behaviour.
261 */
262 cpu_impl = VER_IMPL(rdpr(ver));
263
264 /*
265 * Initialize Open Firmware (needed for console).
266 */
267 OF_init(vec);
268
269 /*
270 * Parse metadata if present and fetch parameters. Must be before the
271 * console is inited so cninit gets the right value of boothowto.
272 */
273 if (mdp != NULL) {
274 preload_metadata = mdp;
275 kmdp = preload_search_by_type("elf kernel");
276 if (kmdp != NULL) {
277 boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);
278 kern_envp = MD_FETCH(kmdp, MODINFOMD_ENVP, char *);
279 end = MD_FETCH(kmdp, MODINFOMD_KERNEND, vm_offset_t);
280 kernel_tlb_slots = MD_FETCH(kmdp, MODINFOMD_DTLB_SLOTS,
281 int);
282 kernel_tlbs = (void *)preload_search_info(kmdp,
283 MODINFO_METADATA | MODINFOMD_DTLB);
284 }
285 }
286
287 init_param1();
288
289 root = OF_peer(0);
290 for (child = OF_child(root); child != 0; child = OF_peer(child)) {
291 OF_getprop(child, "device_type", type, sizeof(type));
292 if (strcmp(type, "cpu") == 0)
293 break;
294 }
295
296 OF_getprop(child, "clock-frequency", &clock, sizeof(clock));
297 tick_init(clock);
298
299 /*
300 * Initialize the console before printing anything.
301 */
302 cninit();
303
304 /*
305 * Panic is there is no metadata. Most likely the kernel was booted
306 * directly, instead of through loader(8).
307 */
308 if (mdp == NULL || kmdp == NULL) {
309 printf("sparc64_init: no loader metadata.\n"
310 "This probably means you are not using loader(8).\n");
311 panic("sparc64_init");
312 }
313
314 /*
315 * Sanity check the kernel end, which is important.
316 */
317 if (end == 0) {
318 printf("sparc64_init: warning, kernel end not specified.\n"
319 "Attempting to continue anyway.\n");
320 end = (vm_offset_t)_end;
321 }
322
323 cache_init(child);
324
325 getenv_int("machdep.use_vis", &cpu_use_vis);
326 if (cpu_use_vis) {
327 cpu_block_copy = spitfire_block_copy;
328 cpu_block_zero = spitfire_block_zero;
329 } else {
330 cpu_block_copy = bcopy;
331 cpu_block_zero = bzero;
332 }
333
334 #ifdef SMP
335 mp_tramp = mp_tramp_alloc();
336 #endif
337
338 /*
339 * Initialize virtual memory and calculate physmem.
340 */
341 pmap_bootstrap(end);
342
343 /*
344 * Initialize tunables.
345 */
346 init_param2(physmem);
347 env = getenv("kernelname");
348 if (env != NULL) {
349 strlcpy(kernelname, env, sizeof(kernelname));
350 freeenv(env);
351 }
352
353 /*
354 * Initialize the interrupt tables.
355 */
356 intr_init1();
357
358 /*
359 * Initialize proc0 stuff (p_contested needs to be done early).
360 */
361 proc_linkup(&proc0, &ksegrp0, &thread0);
362 proc0.p_md.md_sigtramp = NULL;
363 proc0.p_md.md_utrap = NULL;
364 thread0.td_kstack = kstack0;
365 thread0.td_pcb = (struct pcb *)
366 (thread0.td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1;
367 frame0.tf_tstate = TSTATE_IE | TSTATE_PEF | TSTATE_PRIV;
368 thread0.td_frame = &frame0;
369
370 /*
371 * Prime our per-cpu data page for use. Note, we are using it for our
372 * stack, so don't pass the real size (PAGE_SIZE) to pcpu_init or
373 * it'll zero it out from under us.
374 */
375 pc = (struct pcpu *)(pcpu0 + (PCPU_PAGES * PAGE_SIZE)) - 1;
376 pcpu_init(pc, 0, sizeof(struct pcpu));
377 pc->pc_curthread = &thread0;
378 pc->pc_curpcb = thread0.td_pcb;
379 pc->pc_mid = UPA_CR_GET_MID(ldxa(0, ASI_UPA_CONFIG_REG));
380 pc->pc_addr = (vm_offset_t)pcpu0;
381 pc->pc_node = child;
382 pc->pc_tlb_ctx = TLB_CTX_USER_MIN;
383 pc->pc_tlb_ctx_min = TLB_CTX_USER_MIN;
384 pc->pc_tlb_ctx_max = TLB_CTX_USER_MAX;
385
386 /*
387 * Initialize global registers.
388 */
389 cpu_setregs(pc);
390
391 /*
392 * Initialize the message buffer (after setting trap table).
393 */
394 msgbufinit(msgbufp, MSGBUF_SIZE);
395
396 mutex_init();
397 intr_init2();
398
399 /*
400 * Finish pmap initialization now that we're ready for mutexes.
401 */
402 PMAP_LOCK_INIT(kernel_pmap);
403
404 OF_getprop(root, "name", sparc64_model, sizeof(sparc64_model) - 1);
405
406 kdb_init();
407
408 #ifdef KDB
409 if (boothowto & RB_KDB)
410 kdb_enter("Boot flags requested debugger");
411 #endif
412 }
413
414 void
415 set_openfirm_callback(ofw_vec_t *vec)
416 {
417 ofw_tba = rdpr(tba);
418 ofw_vec = (u_long)vec;
419 }
420
421 void
422 sendsig(sig_t catcher, int sig, sigset_t *mask, u_long code)
423 {
424 struct trapframe *tf;
425 struct sigframe *sfp;
426 struct sigacts *psp;
427 struct sigframe sf;
428 struct thread *td;
429 struct frame *fp;
430 struct proc *p;
431 int oonstack;
432 u_long sp;
433
434 oonstack = 0;
435 td = curthread;
436 p = td->td_proc;
437 PROC_LOCK_ASSERT(p, MA_OWNED);
438 psp = p->p_sigacts;
439 mtx_assert(&psp->ps_mtx, MA_OWNED);
440 tf = td->td_frame;
441 sp = tf->tf_sp + SPOFF;
442 oonstack = sigonstack(sp);
443
444 CTR4(KTR_SIG, "sendsig: td=%p (%s) catcher=%p sig=%d", td, p->p_comm,
445 catcher, sig);
446
447 /* Make sure we have a signal trampoline to return to. */
448 if (p->p_md.md_sigtramp == NULL) {
449 /*
450 * No signal tramoline... kill the process.
451 */
452 CTR0(KTR_SIG, "sendsig: no sigtramp");
453 printf("sendsig: %s is too old, rebuild it\n", p->p_comm);
454 sigexit(td, sig);
455 /* NOTREACHED */
456 }
457
458 /* Save user context. */
459 bzero(&sf, sizeof(sf));
460 get_mcontext(td, &sf.sf_uc.uc_mcontext, 0);
461 sf.sf_uc.uc_sigmask = *mask;
462 sf.sf_uc.uc_stack = td->td_sigstk;
463 sf.sf_uc.uc_stack.ss_flags = (td->td_pflags & TDP_ALTSTACK)
464 ? ((oonstack) ? SS_ONSTACK : 0) : SS_DISABLE;
465
466 /* Allocate and validate space for the signal handler context. */
467 if ((td->td_pflags & TDP_ALTSTACK) != 0 && !oonstack &&
468 SIGISMEMBER(psp->ps_sigonstack, sig)) {
469 sfp = (struct sigframe *)(td->td_sigstk.ss_sp +
470 td->td_sigstk.ss_size - sizeof(struct sigframe));
471 } else
472 sfp = (struct sigframe *)sp - 1;
473 mtx_unlock(&psp->ps_mtx);
474 PROC_UNLOCK(p);
475
476 fp = (struct frame *)sfp - 1;
477
478 /* Translate the signal if appropriate. */
479 if (p->p_sysent->sv_sigtbl && sig <= p->p_sysent->sv_sigsize)
480 sig = p->p_sysent->sv_sigtbl[_SIG_IDX(sig)];
481
482 /* Build the argument list for the signal handler. */
483 tf->tf_out[0] = sig;
484 tf->tf_out[1] = (register_t)&sfp->sf_si;
485 tf->tf_out[2] = (register_t)&sfp->sf_uc;
486 tf->tf_out[4] = (register_t)catcher;
487 /* Fill siginfo structure. */
488 sf.sf_si.si_signo = sig;
489 sf.sf_si.si_code = code;
490 sf.sf_si.si_addr = (void *)tf->tf_sfar;
491
492 /* Copy the sigframe out to the user's stack. */
493 if (rwindow_save(td) != 0 || copyout(&sf, sfp, sizeof(*sfp)) != 0 ||
494 suword(&fp->fr_in[6], tf->tf_out[6]) != 0) {
495 /*
496 * Something is wrong with the stack pointer.
497 * ...Kill the process.
498 */
499 CTR2(KTR_SIG, "sendsig: sigexit td=%p sfp=%p", td, sfp);
500 PROC_LOCK(p);
501 sigexit(td, SIGILL);
502 /* NOTREACHED */
503 }
504
505 tf->tf_tpc = (u_long)p->p_md.md_sigtramp;
506 tf->tf_tnpc = tf->tf_tpc + 4;
507 tf->tf_sp = (u_long)fp - SPOFF;
508
509 CTR3(KTR_SIG, "sendsig: return td=%p pc=%#lx sp=%#lx", td, tf->tf_tpc,
510 tf->tf_sp);
511
512 PROC_LOCK(p);
513 mtx_lock(&psp->ps_mtx);
514 }
515
516 /*
517 * Build siginfo_t for SA thread
518 */
519 void
520 cpu_thread_siginfo(int sig, u_long code, siginfo_t *si)
521 {
522 struct proc *p;
523 struct thread *td;
524
525 td = curthread;
526 p = td->td_proc;
527 PROC_LOCK_ASSERT(p, MA_OWNED);
528
529 bzero(si, sizeof(*si));
530 si->si_signo = sig;
531 si->si_code = code;
532 /* XXXKSE fill other fields */
533 }
534
535 #ifndef _SYS_SYSPROTO_H_
536 struct sigreturn_args {
537 ucontext_t *ucp;
538 };
539 #endif
540
541 /*
542 * MPSAFE
543 */
544 int
545 sigreturn(struct thread *td, struct sigreturn_args *uap)
546 {
547 struct proc *p;
548 mcontext_t *mc;
549 ucontext_t uc;
550 int error;
551
552 p = td->td_proc;
553 if (rwindow_save(td)) {
554 PROC_LOCK(p);
555 sigexit(td, SIGILL);
556 }
557
558 CTR2(KTR_SIG, "sigreturn: td=%p ucp=%p", td, uap->sigcntxp);
559 if (copyin(uap->sigcntxp, &uc, sizeof(uc)) != 0) {
560 CTR1(KTR_SIG, "sigreturn: efault td=%p", td);
561 return (EFAULT);
562 }
563
564 mc = &uc.uc_mcontext;
565 error = set_mcontext(td, mc);
566 if (error != 0)
567 return (error);
568
569 PROC_LOCK(p);
570 td->td_sigmask = uc.uc_sigmask;
571 SIG_CANTMASK(td->td_sigmask);
572 signotify(td);
573 PROC_UNLOCK(p);
574
575 CTR4(KTR_SIG, "sigreturn: return td=%p pc=%#lx sp=%#lx tstate=%#lx",
576 td, mc->mc_tpc, mc->mc_sp, mc->mc_tstate);
577 return (EJUSTRETURN);
578 }
579
580 #ifdef COMPAT_FREEBSD4
581 int
582 freebsd4_sigreturn(struct thread *td, struct freebsd4_sigreturn_args *uap)
583 {
584
585 return sigreturn(td, (struct sigreturn_args *)uap);
586 }
587 #endif
588
589 /*
590 * Construct a PCB from a trapframe. This is called from kdb_trap() where
591 * we want to start a backtrace from the function that caused us to enter
592 * the debugger. We have the context in the trapframe, but base the trace
593 * on the PCB. The PCB doesn't have to be perfect, as long as it contains
594 * enough for a backtrace.
595 */
596 void
597 makectx(struct trapframe *tf, struct pcb *pcb)
598 {
599
600 pcb->pcb_pc = tf->tf_tpc;
601 pcb->pcb_sp = tf->tf_sp;
602 }
603
604 int
605 get_mcontext(struct thread *td, mcontext_t *mc, int flags)
606 {
607 struct trapframe *tf;
608 struct pcb *pcb;
609
610 tf = td->td_frame;
611 pcb = td->td_pcb;
612 bcopy(tf, mc, sizeof(*tf));
613 if (flags & GET_MC_CLEAR_RET) {
614 mc->mc_out[0] = 0;
615 mc->mc_out[1] = 0;
616 }
617 mc->mc_flags = _MC_VERSION;
618 critical_enter();
619 if ((tf->tf_fprs & FPRS_FEF) != 0) {
620 savefpctx(pcb->pcb_ufp);
621 tf->tf_fprs &= ~FPRS_FEF;
622 pcb->pcb_flags |= PCB_FEF;
623 }
624 if ((pcb->pcb_flags & PCB_FEF) != 0) {
625 bcopy(pcb->pcb_ufp, mc->mc_fp, sizeof(mc->mc_fp));
626 mc->mc_fprs |= FPRS_FEF;
627 }
628 critical_exit();
629 return (0);
630 }
631
632 int
633 set_mcontext(struct thread *td, const mcontext_t *mc)
634 {
635 struct trapframe *tf;
636 struct pcb *pcb;
637 uint64_t wstate;
638
639 if (!TSTATE_SECURE(mc->mc_tstate) ||
640 (mc->mc_flags & ((1L << _MC_VERSION_BITS) - 1)) != _MC_VERSION)
641 return (EINVAL);
642 tf = td->td_frame;
643 pcb = td->td_pcb;
644 /* Make sure the windows are spilled first. */
645 flushw();
646 wstate = tf->tf_wstate;
647 bcopy(mc, tf, sizeof(*tf));
648 tf->tf_wstate = wstate;
649 if ((mc->mc_fprs & FPRS_FEF) != 0) {
650 tf->tf_fprs = 0;
651 bcopy(mc->mc_fp, pcb->pcb_ufp, sizeof(pcb->pcb_ufp));
652 pcb->pcb_flags |= PCB_FEF;
653 }
654 return (0);
655 }
656
657 /*
658 * Exit the kernel and execute a firmware call that will not return, as
659 * specified by the arguments.
660 */
661 void
662 cpu_shutdown(void *args)
663 {
664
665 #ifdef SMP
666 cpu_mp_shutdown();
667 #endif
668 openfirmware_exit(args);
669 }
670
671 /* Get current clock frequency for the given cpu id. */
672 int
673 cpu_est_clockrate(int cpu_id, uint64_t *rate)
674 {
675
676 return (ENXIO);
677 }
678
679 /*
680 * Duplicate OF_exit() with a different firmware call function that restores
681 * the trap table, otherwise a RED state exception is triggered in at least
682 * some firmware versions.
683 */
684 void
685 cpu_halt(void)
686 {
687 static struct {
688 cell_t name;
689 cell_t nargs;
690 cell_t nreturns;
691 } args = {
692 (cell_t)"exit",
693 0,
694 0
695 };
696
697 cpu_shutdown(&args);
698 }
699
700 void
701 sparc64_shutdown_final(void *dummy, int howto)
702 {
703 static struct {
704 cell_t name;
705 cell_t nargs;
706 cell_t nreturns;
707 } args = {
708 (cell_t)"SUNW,power-off",
709 0,
710 0
711 };
712
713 /* Turn the power off? */
714 if ((howto & RB_POWEROFF) != 0)
715 cpu_shutdown(&args);
716 /* In case of halt, return to the firmware */
717 if ((howto & RB_HALT) != 0)
718 cpu_halt();
719 }
720
721 void
722 cpu_idle(void)
723 {
724 /* Insert code to halt (until next interrupt) for the idle loop */
725 }
726
727 int
728 ptrace_set_pc(struct thread *td, u_long addr)
729 {
730
731 td->td_frame->tf_tpc = addr;
732 td->td_frame->tf_tnpc = addr + 4;
733 return (0);
734 }
735
736 int
737 ptrace_single_step(struct thread *td)
738 {
739 /* TODO; */
740 return (0);
741 }
742
743 int
744 ptrace_clear_single_step(struct thread *td)
745 {
746 /* TODO; */
747 return (0);
748 }
749
750 void
751 exec_setregs(struct thread *td, u_long entry, u_long stack, u_long ps_strings)
752 {
753 struct trapframe *tf;
754 struct pcb *pcb;
755 struct proc *p;
756 u_long sp;
757
758 /* XXX no cpu_exec */
759 p = td->td_proc;
760 p->p_md.md_sigtramp = NULL;
761 if (p->p_md.md_utrap != NULL) {
762 utrap_free(p->p_md.md_utrap);
763 p->p_md.md_utrap = NULL;
764 }
765
766 pcb = td->td_pcb;
767 tf = td->td_frame;
768 sp = rounddown(stack, 16);
769 bzero(pcb, sizeof(*pcb));
770 bzero(tf, sizeof(*tf));
771 tf->tf_out[0] = stack;
772 tf->tf_out[3] = p->p_sysent->sv_psstrings;
773 tf->tf_out[6] = sp - SPOFF - sizeof(struct frame);
774 tf->tf_tnpc = entry + 4;
775 tf->tf_tpc = entry;
776 tf->tf_tstate = TSTATE_IE | TSTATE_PEF | TSTATE_MM_TSO;
777
778 td->td_retval[0] = tf->tf_out[0];
779 td->td_retval[1] = tf->tf_out[1];
780 }
781
782 int
783 fill_regs(struct thread *td, struct reg *regs)
784 {
785
786 bcopy(td->td_frame, regs, sizeof(*regs));
787 return (0);
788 }
789
790 int
791 set_regs(struct thread *td, struct reg *regs)
792 {
793 struct trapframe *tf;
794
795 if (!TSTATE_SECURE(regs->r_tstate))
796 return (EINVAL);
797 tf = td->td_frame;
798 regs->r_wstate = tf->tf_wstate;
799 bcopy(regs, tf, sizeof(*regs));
800 return (0);
801 }
802
803 int
804 fill_dbregs(struct thread *td, struct dbreg *dbregs)
805 {
806
807 return (ENOSYS);
808 }
809
810 int
811 set_dbregs(struct thread *td, struct dbreg *dbregs)
812 {
813
814 return (ENOSYS);
815 }
816
817 int
818 fill_fpregs(struct thread *td, struct fpreg *fpregs)
819 {
820 struct trapframe *tf;
821 struct pcb *pcb;
822
823 pcb = td->td_pcb;
824 tf = td->td_frame;
825 bcopy(pcb->pcb_ufp, fpregs->fr_regs, sizeof(fpregs->fr_regs));
826 fpregs->fr_fsr = tf->tf_fsr;
827 fpregs->fr_gsr = tf->tf_gsr;
828 return (0);
829 }
830
831 int
832 set_fpregs(struct thread *td, struct fpreg *fpregs)
833 {
834 struct trapframe *tf;
835 struct pcb *pcb;
836
837 pcb = td->td_pcb;
838 tf = td->td_frame;
839 tf->tf_fprs &= ~FPRS_FEF;
840 bcopy(fpregs->fr_regs, pcb->pcb_ufp, sizeof(pcb->pcb_ufp));
841 tf->tf_fsr = fpregs->fr_fsr;
842 tf->tf_gsr = fpregs->fr_gsr;
843 return (0);
844 }
845
846 struct md_utrap *
847 utrap_alloc(void)
848 {
849 struct md_utrap *ut;
850
851 ut = malloc(sizeof(struct md_utrap), M_SUBPROC, M_WAITOK | M_ZERO);
852 ut->ut_refcnt = 1;
853 return (ut);
854 }
855
856 void
857 utrap_free(struct md_utrap *ut)
858 {
859 int refcnt;
860
861 if (ut == NULL)
862 return;
863 mtx_pool_lock(mtxpool_sleep, ut);
864 ut->ut_refcnt--;
865 refcnt = ut->ut_refcnt;
866 mtx_pool_unlock(mtxpool_sleep, ut);
867 if (refcnt == 0)
868 free(ut, M_SUBPROC);
869 }
870
871 struct md_utrap *
872 utrap_hold(struct md_utrap *ut)
873 {
874
875 if (ut == NULL)
876 return (NULL);
877 mtx_pool_lock(mtxpool_sleep, ut);
878 ut->ut_refcnt++;
879 mtx_pool_unlock(mtxpool_sleep, ut);
880 return (ut);
881 }
Cache object: 56f27f4792b1b8beebde6aba86061ba1
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