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.
7 * This code is derived from software contributed to Berkeley by
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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
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
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
41 #include "opt_compat.h"
43 #include "opt_kstack_pages.h"
44 #include "opt_msgbuf.h"
46 #include <sys/param.h>
47 #include <sys/malloc.h>
49 #include <sys/systm.h>
55 #include <sys/eventhandler.h>
57 #include <sys/imgact.h>
58 #include <sys/interrupt.h>
60 #include <sys/kernel.h>
62 #include <sys/linker.h>
64 #include <sys/msgbuf.h>
65 #include <sys/mutex.h>
67 #include <sys/ptrace.h>
68 #include <sys/reboot.h>
69 #include <sys/signalvar.h>
71 #include <sys/syscallsubr.h>
72 #include <sys/sysent.h>
73 #include <sys/sysproto.h>
74 #include <sys/timetc.h>
75 #include <sys/ucontext.h>
77 #include <dev/ofw/openfirm.h>
80 #include <vm/vm_extern.h>
81 #include <vm/vm_kern.h>
82 #include <vm/vm_page.h>
83 #include <vm/vm_map.h>
84 #include <vm/vm_object.h>
85 #include <vm/vm_pager.h>
86 #include <vm/vm_param.h>
90 #include <machine/bus.h>
91 #include <machine/cache.h>
92 #include <machine/clock.h>
93 #include <machine/cmt.h>
94 #include <machine/cpu.h>
95 #include <machine/fireplane.h>
96 #include <machine/fp.h>
97 #include <machine/fsr.h>
98 #include <machine/intr_machdep.h>
99 #include <machine/jbus.h>
100 #include <machine/md_var.h>
101 #include <machine/metadata.h>
102 #include <machine/ofw_machdep.h>
103 #include <machine/ofw_mem.h>
104 #include <machine/pcb.h>
105 #include <machine/pmap.h>
106 #include <machine/pstate.h>
107 #include <machine/reg.h>
108 #include <machine/sigframe.h>
109 #include <machine/smp.h>
110 #include <machine/tick.h>
111 #include <machine/tlb.h>
112 #include <machine/tstate.h>
113 #include <machine/upa.h>
114 #include <machine/ver.h>
116 typedef int ofw_vec_t(void *);
119 extern vm_offset_t ksym_start, ksym_end;
124 struct tlb_entry *kernel_tlbs;
125 int kernel_tlb_slots;
132 char pcpu0[PCPU_PAGES * PAGE_SIZE];
133 struct trapframe frame0;
136 vm_paddr_t kstack0_phys;
138 struct kva_md_info kmi;
142 u_int tba_taken_over;
144 char sparc64_model[32];
146 static int cpu_use_vis = 1;
148 cpu_block_copy_t *cpu_block_copy;
149 cpu_block_zero_t *cpu_block_zero;
151 static phandle_t find_bsp(phandle_t node, uint32_t bspid, u_int cpu_impl);
152 void sparc64_init(caddr_t mdp, u_long o1, u_long o2, u_long o3,
154 static void sparc64_shutdown_final(void *dummy, int howto);
156 static void cpu_startup(void *arg);
157 SYSINIT(cpu, SI_SUB_CPU, SI_ORDER_FIRST, cpu_startup, NULL);
159 CTASSERT((1 << INT_SHIFT) == sizeof(int));
160 CTASSERT((1 << PTR_SHIFT) == sizeof(char *));
162 CTASSERT(sizeof(struct reg) == 256);
163 CTASSERT(sizeof(struct fpreg) == 272);
164 CTASSERT(sizeof(struct __mcontext) == 512);
166 CTASSERT((sizeof(struct pcb) & (64 - 1)) == 0);
167 CTASSERT((offsetof(struct pcb, pcb_kfp) & (64 - 1)) == 0);
168 CTASSERT((offsetof(struct pcb, pcb_ufp) & (64 - 1)) == 0);
169 CTASSERT(sizeof(struct pcb) <= ((KSTACK_PAGES * PAGE_SIZE) / 8));
171 CTASSERT(sizeof(struct pcpu) <= ((PCPU_PAGES * PAGE_SIZE) / 2));
174 cpu_startup(void *arg)
180 for (i = 0; i < sparc64_nmemreg; i++)
181 physsz += sparc64_memreg[i].mr_size;
182 printf("real memory = %lu (%lu MB)\n", physsz,
183 physsz / (1024 * 1024));
184 realmem = (long)physsz / PAGE_SIZE;
186 vm_ksubmap_init(&kmi);
189 vm_pager_bufferinit();
191 EVENTHANDLER_REGISTER(shutdown_final, sparc64_shutdown_final, NULL,
194 printf("avail memory = %lu (%lu MB)\n", cnt.v_free_count * PAGE_SIZE,
195 cnt.v_free_count / ((1024 * 1024) / PAGE_SIZE));
198 printf("machine: %s\n", sparc64_model);
200 cpu_identify(rdpr(ver), PCPU_GET(clock), curcpu);
204 cpu_pcpu_init(struct pcpu *pcpu, int cpuid, size_t size)
206 struct intr_request *ir;
209 pcpu->pc_irtail = &pcpu->pc_irhead;
210 for (i = 0; i < IR_FREE; i++) {
211 ir = &pcpu->pc_irpool[i];
212 ir->ir_next = pcpu->pc_irfree;
213 pcpu->pc_irfree = ir;
224 if (td->td_md.md_spinlock_count == 0) {
226 wrpr(pil, 0, PIL_TICK);
227 td->td_md.md_saved_pil = pil;
229 td->td_md.md_spinlock_count++;
240 td->td_md.md_spinlock_count--;
241 if (td->td_md.md_spinlock_count == 0)
242 wrpr(pil, td->td_md.md_saved_pil, 0);
246 find_bsp(phandle_t node, uint32_t bspid, u_int cpu_impl)
248 char type[sizeof("cpu")];
252 for (; node != 0; node = OF_peer(node)) {
253 child = OF_child(node);
255 child = find_bsp(child, bspid, cpu_impl);
259 if (OF_getprop(node, "device_type", type,
262 if (strcmp(type, "cpu") != 0)
264 if (OF_getprop(node, cpu_cpuid_prop(cpu_impl), &cpuid,
275 cpu_cpuid_prop(u_int cpu_impl)
279 case CPU_IMPL_SPARC64:
280 case CPU_IMPL_SPARC64V:
281 case CPU_IMPL_ULTRASPARCI:
282 case CPU_IMPL_ULTRASPARCII:
283 case CPU_IMPL_ULTRASPARCIIi:
284 case CPU_IMPL_ULTRASPARCIIe:
285 return ("upa-portid");
286 case CPU_IMPL_ULTRASPARCIII:
287 case CPU_IMPL_ULTRASPARCIIIp:
288 case CPU_IMPL_ULTRASPARCIIIi:
289 case CPU_IMPL_ULTRASPARCIIIip:
291 case CPU_IMPL_ULTRASPARCIV:
292 case CPU_IMPL_ULTRASPARCIVp:
300 cpu_get_mid(u_int cpu_impl)
304 case CPU_IMPL_SPARC64:
305 case CPU_IMPL_SPARC64V:
306 case CPU_IMPL_ULTRASPARCI:
307 case CPU_IMPL_ULTRASPARCII:
308 case CPU_IMPL_ULTRASPARCIIi:
309 case CPU_IMPL_ULTRASPARCIIe:
310 return (UPA_CR_GET_MID(ldxa(0, ASI_UPA_CONFIG_REG)));
311 case CPU_IMPL_ULTRASPARCIII:
312 case CPU_IMPL_ULTRASPARCIIIp:
313 return (FIREPLANE_CR_GET_AID(ldxa(AA_FIREPLANE_CONFIG,
314 ASI_FIREPLANE_CONFIG_REG)));
315 case CPU_IMPL_ULTRASPARCIIIi:
316 case CPU_IMPL_ULTRASPARCIIIip:
317 return (JBUS_CR_GET_JID(ldxa(0, ASI_JBUS_CONFIG_REG)));
318 case CPU_IMPL_ULTRASPARCIV:
319 case CPU_IMPL_ULTRASPARCIVp:
320 return (INTR_ID_GET_ID(ldxa(AA_INTR_ID, ASI_INTR_ID)));
327 sparc64_init(caddr_t mdp, u_long o1, u_long o2, u_long o3, ofw_vec_t *vec)
341 * Find out what kind of CPU we have first, for anything that changes
344 cpu_impl = VER_IMPL(rdpr(ver));
347 * Do CPU-specific initialization.
349 if (cpu_impl == CPU_IMPL_SPARC64V ||
350 cpu_impl >= CPU_IMPL_ULTRASPARCIII)
351 cheetah_init(cpu_impl);
354 * Clear (S)TICK timer (including NPT).
356 tick_clear(cpu_impl);
359 * UltraSparc II[e,i] based systems come up with the tick interrupt
360 * enabled and a handler that resets the tick counter, causing DELAY()
361 * to not work properly when used early in boot.
362 * UltraSPARC III based systems come up with the system tick interrupt
363 * enabled, causing an interrupt storm on startup since they are not
369 * Set up Open Firmware entry points.
372 ofw_vec = (u_long)vec;
375 * Parse metadata if present and fetch parameters. Must be before the
376 * console is inited so cninit gets the right value of boothowto.
379 preload_metadata = mdp;
380 kmdp = preload_search_by_type("elf kernel");
382 boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);
383 kern_envp = MD_FETCH(kmdp, MODINFOMD_ENVP, char *);
384 end = MD_FETCH(kmdp, MODINFOMD_KERNEND, vm_offset_t);
385 kernel_tlb_slots = MD_FETCH(kmdp, MODINFOMD_DTLB_SLOTS,
387 kernel_tlbs = (void *)preload_search_info(kmdp,
388 MODINFO_METADATA | MODINFOMD_DTLB);
395 * Initialize Open Firmware (needed for console).
397 OF_install(OFW_STD_DIRECT, 0);
401 * Prime our per-CPU data page for use. Note, we are using it for
402 * our stack, so don't pass the real size (PAGE_SIZE) to pcpu_init
403 * or it'll zero it out from under us.
405 pc = (struct pcpu *)(pcpu0 + (PCPU_PAGES * PAGE_SIZE)) - 1;
406 pcpu_init(pc, 0, sizeof(struct pcpu));
407 pc->pc_addr = (vm_offset_t)pcpu0;
408 pc->pc_impl = cpu_impl;
409 pc->pc_mid = cpu_get_mid(cpu_impl);
410 pc->pc_tlb_ctx = TLB_CTX_USER_MIN;
411 pc->pc_tlb_ctx_min = TLB_CTX_USER_MIN;
412 pc->pc_tlb_ctx_max = TLB_CTX_USER_MAX;
415 * Determine the OFW node and frequency of the BSP (and ensure the
416 * BSP is in the device tree in the first place).
419 pc->pc_node = find_bsp(root, pc->pc_mid, cpu_impl);
420 if (pc->pc_node == 0)
422 if (OF_getprop(pc->pc_node, "clock-frequency", &pc->pc_clock,
423 sizeof(pc->pc_clock)) <= 0)
427 * Provide a DELAY() that works before PCPU_REG is set. We can't
428 * set PCPU_REG without also taking over the trap table or the
429 * firmware will overwrite it. Unfortunately, it's way to early
430 * to also take over the trap table at this point.
432 clock_boot = pc->pc_clock;
433 delay_func = delay_boot;
436 * Initialize the console before printing anything.
437 * NB: the low-level console drivers require a working DELAY() at
443 * Panic if there is no metadata. Most likely the kernel was booted
444 * directly, instead of through loader(8).
446 if (mdp == NULL || kmdp == NULL || end == 0 ||
447 kernel_tlb_slots == 0 || kernel_tlbs == NULL) {
448 printf("sparc64_init: missing loader metadata.\n"
449 "This probably means you are not using loader(8).\n");
450 panic("sparc64_init");
454 * Work around the broken loader behavior of not demapping no
455 * longer used kernel TLB slots when unloading the kernel or
458 for (va = KERNBASE + (kernel_tlb_slots - 1) * PAGE_SIZE_4M;
459 va >= roundup2(end, PAGE_SIZE_4M); va -= PAGE_SIZE_4M) {
461 printf("demapping unused kernel TLB slot "
462 "(va %#lx - %#lx)\n", va, va + PAGE_SIZE_4M - 1);
463 stxa(TLB_DEMAP_VA(va) | TLB_DEMAP_PRIMARY | TLB_DEMAP_PAGE,
465 stxa(TLB_DEMAP_VA(va) | TLB_DEMAP_PRIMARY | TLB_DEMAP_PAGE,
472 * Determine the TLB slot maxima, which are expected to be
473 * equal across all CPUs.
474 * NB: for cheetah-class CPUs, these properties only refer
477 if (OF_getprop(pc->pc_node, "#dtlb-entries", &dtlb_slots,
478 sizeof(dtlb_slots)) == -1)
479 panic("sparc64_init: cannot determine number of dTLB slots");
480 if (OF_getprop(pc->pc_node, "#itlb-entries", &itlb_slots,
481 sizeof(itlb_slots)) == -1)
482 panic("sparc64_init: cannot determine number of iTLB slots");
485 * Initialize and enable the caches. Note that his may include
486 * applying workarounds.
489 cache_enable(cpu_impl);
490 uma_set_align(pc->pc_cache.dc_linesize - 1);
492 cpu_block_copy = bcopy;
493 cpu_block_zero = bzero;
494 getenv_int("machdep.use_vis", &cpu_use_vis);
497 case CPU_IMPL_SPARC64:
498 case CPU_IMPL_ULTRASPARCI:
499 case CPU_IMPL_ULTRASPARCII:
500 case CPU_IMPL_ULTRASPARCIIi:
501 case CPU_IMPL_ULTRASPARCIIe:
502 case CPU_IMPL_ULTRASPARCIII: /* NB: we've disabled P$. */
503 case CPU_IMPL_ULTRASPARCIIIp:
504 case CPU_IMPL_ULTRASPARCIIIi:
505 case CPU_IMPL_ULTRASPARCIV:
506 case CPU_IMPL_ULTRASPARCIVp:
507 case CPU_IMPL_ULTRASPARCIIIip:
508 cpu_block_copy = spitfire_block_copy;
509 cpu_block_zero = spitfire_block_zero;
511 case CPU_IMPL_SPARC64V:
512 cpu_block_copy = zeus_block_copy;
513 cpu_block_zero = zeus_block_zero;
514 cpu_block_copy = spitfire_block_copy;
515 cpu_block_zero = spitfire_block_zero;
525 * Initialize virtual memory and calculate physmem.
527 pmap_bootstrap(cpu_impl);
530 * Initialize tunables.
532 init_param2(physmem);
533 env = getenv("kernelname");
535 strlcpy(kernelname, env, sizeof(kernelname));
540 * Initialize the interrupt tables.
545 * Initialize proc0, set kstack0, frame0, curthread and curpcb.
547 proc_linkup0(&proc0, &thread0);
548 proc0.p_md.md_sigtramp = NULL;
549 proc0.p_md.md_utrap = NULL;
550 thread0.td_kstack = kstack0;
551 thread0.td_pcb = (struct pcb *)
552 (thread0.td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1;
553 frame0.tf_tstate = TSTATE_IE | TSTATE_PEF | TSTATE_PRIV;
554 thread0.td_frame = &frame0;
555 pc->pc_curthread = &thread0;
556 pc->pc_curpcb = thread0.td_pcb;
559 * Initialize global registers.
564 * Take over the trap table via the PROM. Using the PROM for this
565 * is necessary in order to set obp-control-relinquished to true
566 * within the PROM so obtaining /virtual-memory/translations doesn't
567 * trigger a fatal reset error or worse things further down the road.
568 * XXX it should be possible to use this soley instead of writing
569 * %tba in cpu_setregs(). Doing so causes a hang however.
571 sun4u_set_traptable(tl0_base);
574 * It's now safe to use the real DELAY().
576 delay_func = delay_tick;
579 * Initialize the dynamic per-CPU area for the BSP and the message
580 * buffer (after setting the trap table).
582 dpcpu_init(dpcpu0, 0);
583 msgbufinit(msgbufp, MSGBUF_SIZE);
586 * Initialize mutexes.
591 * Finish the interrupt initialization now that mutexes work and
595 wrpr(pstate, 0, PSTATE_KERNEL);
598 * Finish pmap initialization now that we're ready for mutexes.
600 PMAP_LOCK_INIT(kernel_pmap);
602 OF_getprop(root, "name", sparc64_model, sizeof(sparc64_model) - 1);
607 if (boothowto & RB_KDB)
608 kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
613 sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
615 struct trapframe *tf;
616 struct sigframe *sfp;
629 PROC_LOCK_ASSERT(p, MA_OWNED);
630 sig = ksi->ksi_signo;
632 mtx_assert(&psp->ps_mtx, MA_OWNED);
634 sp = tf->tf_sp + SPOFF;
635 oonstack = sigonstack(sp);
637 CTR4(KTR_SIG, "sendsig: td=%p (%s) catcher=%p sig=%d", td, p->p_comm,
640 /* Make sure we have a signal trampoline to return to. */
641 if (p->p_md.md_sigtramp == NULL) {
643 * No signal trampoline... kill the process.
645 CTR0(KTR_SIG, "sendsig: no sigtramp");
646 printf("sendsig: %s is too old, rebuild it\n", p->p_comm);
651 /* Save user context. */
652 bzero(&sf, sizeof(sf));
653 get_mcontext(td, &sf.sf_uc.uc_mcontext, 0);
654 sf.sf_uc.uc_sigmask = *mask;
655 sf.sf_uc.uc_stack = td->td_sigstk;
656 sf.sf_uc.uc_stack.ss_flags = (td->td_pflags & TDP_ALTSTACK) ?
657 ((oonstack) ? SS_ONSTACK : 0) : SS_DISABLE;
659 /* Allocate and validate space for the signal handler context. */
660 if ((td->td_pflags & TDP_ALTSTACK) != 0 && !oonstack &&
661 SIGISMEMBER(psp->ps_sigonstack, sig)) {
662 sfp = (struct sigframe *)(td->td_sigstk.ss_sp +
663 td->td_sigstk.ss_size - sizeof(struct sigframe));
665 sfp = (struct sigframe *)sp - 1;
666 mtx_unlock(&psp->ps_mtx);
669 fp = (struct frame *)sfp - 1;
671 /* Translate the signal if appropriate. */
672 if (p->p_sysent->sv_sigtbl && sig <= p->p_sysent->sv_sigsize)
673 sig = p->p_sysent->sv_sigtbl[_SIG_IDX(sig)];
675 /* Build the argument list for the signal handler. */
677 tf->tf_out[2] = (register_t)&sfp->sf_uc;
678 tf->tf_out[4] = (register_t)catcher;
679 if (SIGISMEMBER(psp->ps_siginfo, sig)) {
680 /* Signal handler installed with SA_SIGINFO. */
681 tf->tf_out[1] = (register_t)&sfp->sf_si;
683 /* Fill in POSIX parts. */
684 sf.sf_si = ksi->ksi_info;
685 sf.sf_si.si_signo = sig; /* maybe a translated signal */
687 /* Old FreeBSD-style arguments. */
688 tf->tf_out[1] = ksi->ksi_code;
689 tf->tf_out[3] = (register_t)ksi->ksi_addr;
692 /* Copy the sigframe out to the user's stack. */
693 if (rwindow_save(td) != 0 || copyout(&sf, sfp, sizeof(*sfp)) != 0 ||
694 suword(&fp->fr_in[6], tf->tf_out[6]) != 0) {
696 * Something is wrong with the stack pointer.
697 * ...Kill the process.
699 CTR2(KTR_SIG, "sendsig: sigexit td=%p sfp=%p", td, sfp);
705 tf->tf_tpc = (u_long)p->p_md.md_sigtramp;
706 tf->tf_tnpc = tf->tf_tpc + 4;
707 tf->tf_sp = (u_long)fp - SPOFF;
709 CTR3(KTR_SIG, "sendsig: return td=%p pc=%#lx sp=%#lx", td, tf->tf_tpc,
713 mtx_lock(&psp->ps_mtx);
716 #ifndef _SYS_SYSPROTO_H_
717 struct sigreturn_args {
726 sigreturn(struct thread *td, struct sigreturn_args *uap)
734 if (rwindow_save(td)) {
739 CTR2(KTR_SIG, "sigreturn: td=%p ucp=%p", td, uap->sigcntxp);
740 if (copyin(uap->sigcntxp, &uc, sizeof(uc)) != 0) {
741 CTR1(KTR_SIG, "sigreturn: efault td=%p", td);
745 mc = &uc.uc_mcontext;
746 error = set_mcontext(td, mc);
750 kern_sigprocmask(td, SIG_SETMASK, &uc.uc_sigmask, NULL, 0);
752 CTR4(KTR_SIG, "sigreturn: return td=%p pc=%#lx sp=%#lx tstate=%#lx",
753 td, mc->mc_tpc, mc->mc_sp, mc->mc_tstate);
754 return (EJUSTRETURN);
758 * Construct a PCB from a trapframe. This is called from kdb_trap() where
759 * we want to start a backtrace from the function that caused us to enter
760 * the debugger. We have the context in the trapframe, but base the trace
761 * on the PCB. The PCB doesn't have to be perfect, as long as it contains
762 * enough for a backtrace.
765 makectx(struct trapframe *tf, struct pcb *pcb)
768 pcb->pcb_pc = tf->tf_tpc;
769 pcb->pcb_sp = tf->tf_sp;
773 get_mcontext(struct thread *td, mcontext_t *mc, int flags)
775 struct trapframe *tf;
781 * Copy the registers which will be restored by tl0_ret() from the
783 * Note that we skip %g7 which is used as the userland TLS register
786 mc->mc_flags = _MC_VERSION;
787 mc->mc_global[1] = tf->tf_global[1];
788 mc->mc_global[2] = tf->tf_global[2];
789 mc->mc_global[3] = tf->tf_global[3];
790 mc->mc_global[4] = tf->tf_global[4];
791 mc->mc_global[5] = tf->tf_global[5];
792 mc->mc_global[6] = tf->tf_global[6];
793 if (flags & GET_MC_CLEAR_RET) {
797 mc->mc_out[0] = tf->tf_out[0];
798 mc->mc_out[1] = tf->tf_out[1];
800 mc->mc_out[2] = tf->tf_out[2];
801 mc->mc_out[3] = tf->tf_out[3];
802 mc->mc_out[4] = tf->tf_out[4];
803 mc->mc_out[5] = tf->tf_out[5];
804 mc->mc_out[6] = tf->tf_out[6];
805 mc->mc_out[7] = tf->tf_out[7];
806 mc->mc_fprs = tf->tf_fprs;
807 mc->mc_fsr = tf->tf_fsr;
808 mc->mc_gsr = tf->tf_gsr;
809 mc->mc_tnpc = tf->tf_tnpc;
810 mc->mc_tpc = tf->tf_tpc;
811 mc->mc_tstate = tf->tf_tstate;
814 if ((tf->tf_fprs & FPRS_FEF) != 0) {
815 savefpctx(pcb->pcb_ufp);
816 tf->tf_fprs &= ~FPRS_FEF;
817 pcb->pcb_flags |= PCB_FEF;
819 if ((pcb->pcb_flags & PCB_FEF) != 0) {
820 bcopy(pcb->pcb_ufp, mc->mc_fp, sizeof(mc->mc_fp));
821 mc->mc_fprs |= FPRS_FEF;
828 set_mcontext(struct thread *td, const mcontext_t *mc)
830 struct trapframe *tf;
833 if (!TSTATE_SECURE(mc->mc_tstate) ||
834 (mc->mc_flags & ((1L << _MC_VERSION_BITS) - 1)) != _MC_VERSION)
838 /* Make sure the windows are spilled first. */
841 * Copy the registers which will be restored by tl0_ret() to the
843 * Note that we skip %g7 which is used as the userland TLS register
846 tf->tf_global[1] = mc->mc_global[1];
847 tf->tf_global[2] = mc->mc_global[2];
848 tf->tf_global[3] = mc->mc_global[3];
849 tf->tf_global[4] = mc->mc_global[4];
850 tf->tf_global[5] = mc->mc_global[5];
851 tf->tf_global[6] = mc->mc_global[6];
852 tf->tf_out[0] = mc->mc_out[0];
853 tf->tf_out[1] = mc->mc_out[1];
854 tf->tf_out[2] = mc->mc_out[2];
855 tf->tf_out[3] = mc->mc_out[3];
856 tf->tf_out[4] = mc->mc_out[4];
857 tf->tf_out[5] = mc->mc_out[5];
858 tf->tf_out[6] = mc->mc_out[6];
859 tf->tf_out[7] = mc->mc_out[7];
860 tf->tf_fprs = mc->mc_fprs;
861 tf->tf_fsr = mc->mc_fsr;
862 tf->tf_gsr = mc->mc_gsr;
863 tf->tf_tnpc = mc->mc_tnpc;
864 tf->tf_tpc = mc->mc_tpc;
865 tf->tf_tstate = mc->mc_tstate;
867 if ((mc->mc_fprs & FPRS_FEF) != 0) {
869 bcopy(mc->mc_fp, pcb->pcb_ufp, sizeof(pcb->pcb_ufp));
870 pcb->pcb_flags |= PCB_FEF;
876 * Exit the kernel and execute a firmware call that will not return, as
877 * specified by the arguments.
880 cpu_shutdown(void *args)
890 * Flush the D-cache for non-DMA I/O so that the I-cache can
891 * be made coherent later.
894 cpu_flush_dcache(void *ptr, size_t len)
900 /* Get current clock frequency for the given CPU ID. */
902 cpu_est_clockrate(int cpu_id, uint64_t *rate)
906 pc = pcpu_find(cpu_id);
907 if (pc == NULL || rate == NULL)
909 *rate = pc->pc_clock;
914 * Duplicate OF_exit() with a different firmware call function that restores
915 * the trap table, otherwise a RED state exception is triggered in at least
916 * some firmware versions.
935 sparc64_shutdown_final(void *dummy, int howto)
942 (cell_t)"SUNW,power-off",
947 /* Turn the power off? */
948 if ((howto & RB_POWEROFF) != 0)
950 /* In case of halt, return to the firmware. */
951 if ((howto & RB_HALT) != 0)
959 /* Insert code to halt (until next interrupt) for the idle loop. */
963 cpu_idle_wakeup(int cpu)
970 ptrace_set_pc(struct thread *td, u_long addr)
973 td->td_frame->tf_tpc = addr;
974 td->td_frame->tf_tnpc = addr + 4;
979 ptrace_single_step(struct thread *td)
987 ptrace_clear_single_step(struct thread *td)
995 exec_setregs(struct thread *td, struct image_params *imgp, u_long stack)
997 struct trapframe *tf;
1002 /* XXX no cpu_exec */
1004 p->p_md.md_sigtramp = NULL;
1005 if (p->p_md.md_utrap != NULL) {
1006 utrap_free(p->p_md.md_utrap);
1007 p->p_md.md_utrap = NULL;
1012 sp = rounddown(stack, 16);
1013 bzero(pcb, sizeof(*pcb));
1014 bzero(tf, sizeof(*tf));
1015 tf->tf_out[0] = stack;
1016 tf->tf_out[3] = p->p_sysent->sv_psstrings;
1017 tf->tf_out[6] = sp - SPOFF - sizeof(struct frame);
1018 tf->tf_tnpc = imgp->entry_addr + 4;
1019 tf->tf_tpc = imgp->entry_addr;
1020 tf->tf_tstate = TSTATE_IE | TSTATE_PEF | TSTATE_MM_TSO;
1022 td->td_retval[0] = tf->tf_out[0];
1023 td->td_retval[1] = tf->tf_out[1];
1027 fill_regs(struct thread *td, struct reg *regs)
1030 bcopy(td->td_frame, regs, sizeof(*regs));
1035 set_regs(struct thread *td, struct reg *regs)
1037 struct trapframe *tf;
1039 if (!TSTATE_SECURE(regs->r_tstate))
1042 regs->r_wstate = tf->tf_wstate;
1043 bcopy(regs, tf, sizeof(*regs));
1048 fill_dbregs(struct thread *td, struct dbreg *dbregs)
1055 set_dbregs(struct thread *td, struct dbreg *dbregs)
1062 fill_fpregs(struct thread *td, struct fpreg *fpregs)
1064 struct trapframe *tf;
1069 bcopy(pcb->pcb_ufp, fpregs->fr_regs, sizeof(fpregs->fr_regs));
1070 fpregs->fr_fsr = tf->tf_fsr;
1071 fpregs->fr_gsr = tf->tf_gsr;
1076 set_fpregs(struct thread *td, struct fpreg *fpregs)
1078 struct trapframe *tf;
1083 tf->tf_fprs &= ~FPRS_FEF;
1084 bcopy(fpregs->fr_regs, pcb->pcb_ufp, sizeof(pcb->pcb_ufp));
1085 tf->tf_fsr = fpregs->fr_fsr;
1086 tf->tf_gsr = fpregs->fr_gsr;
1093 struct md_utrap *ut;
1095 ut = malloc(sizeof(struct md_utrap), M_SUBPROC, M_WAITOK | M_ZERO);
1101 utrap_free(struct md_utrap *ut)
1107 mtx_pool_lock(mtxpool_sleep, ut);
1109 refcnt = ut->ut_refcnt;
1110 mtx_pool_unlock(mtxpool_sleep, ut);
1112 free(ut, M_SUBPROC);
1116 utrap_hold(struct md_utrap *ut)
1121 mtx_pool_lock(mtxpool_sleep, ut);
1123 mtx_pool_unlock(mtxpool_sleep, ut);