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 * 3. 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"
45 #include <sys/param.h>
46 #include <sys/malloc.h>
48 #include <sys/systm.h>
54 #include <sys/eventhandler.h>
56 #include <sys/imgact.h>
57 #include <sys/interrupt.h>
59 #include <sys/kernel.h>
61 #include <sys/linker.h>
63 #include <sys/msgbuf.h>
64 #include <sys/mutex.h>
66 #include <sys/ptrace.h>
67 #include <sys/reboot.h>
68 #include <sys/rwlock.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>
76 #include <sys/vmmeter.h>
78 #include <dev/ofw/openfirm.h>
81 #include <vm/vm_extern.h>
82 #include <vm/vm_kern.h>
83 #include <vm/vm_page.h>
84 #include <vm/vm_map.h>
85 #include <vm/vm_object.h>
86 #include <vm/vm_pager.h>
87 #include <vm/vm_param.h>
91 #include <machine/bus.h>
92 #include <machine/cache.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 *);
120 struct tlb_entry *kernel_tlbs;
121 int kernel_tlb_slots;
128 char pcpu0[PCPU_PAGES * PAGE_SIZE];
129 struct pcpu dummy_pcpu[MAXCPU];
130 struct trapframe frame0;
133 vm_paddr_t kstack0_phys;
135 struct kva_md_info kmi;
139 u_int tba_taken_over;
141 char sparc64_model[32];
143 static int cpu_use_vis = 1;
145 cpu_block_copy_t *cpu_block_copy;
146 cpu_block_zero_t *cpu_block_zero;
148 static phandle_t find_bsp(phandle_t node, uint32_t bspid, u_int cpu_impl);
149 void sparc64_init(caddr_t mdp, u_long o1, u_long o2, u_long o3,
151 static void sparc64_shutdown_final(void *dummy, int howto);
153 static void cpu_startup(void *arg);
154 SYSINIT(cpu, SI_SUB_CPU, SI_ORDER_FIRST, cpu_startup, NULL);
156 CTASSERT((1 << INT_SHIFT) == sizeof(int));
157 CTASSERT((1 << PTR_SHIFT) == sizeof(char *));
159 CTASSERT(sizeof(struct reg) == 256);
160 CTASSERT(sizeof(struct fpreg) == 272);
161 CTASSERT(sizeof(struct __mcontext) == 512);
163 CTASSERT((sizeof(struct pcb) & (64 - 1)) == 0);
164 CTASSERT((offsetof(struct pcb, pcb_kfp) & (64 - 1)) == 0);
165 CTASSERT((offsetof(struct pcb, pcb_ufp) & (64 - 1)) == 0);
166 CTASSERT(sizeof(struct pcb) <= ((KSTACK_PAGES * PAGE_SIZE) / 8));
168 CTASSERT(sizeof(struct pcpu) <= ((PCPU_PAGES * PAGE_SIZE) / 2));
171 cpu_startup(void *arg)
177 for (i = 0; i < sparc64_nmemreg; i++)
178 physsz += sparc64_memreg[i].mr_size;
179 printf("real memory = %lu (%lu MB)\n", physsz,
180 physsz / (1024 * 1024));
181 realmem = (long)physsz / PAGE_SIZE;
183 vm_ksubmap_init(&kmi);
186 vm_pager_bufferinit();
188 EVENTHANDLER_REGISTER(shutdown_final, sparc64_shutdown_final, NULL,
191 printf("avail memory = %lu (%lu MB)\n", vm_cnt.v_free_count * PAGE_SIZE,
192 vm_cnt.v_free_count / ((1024 * 1024) / PAGE_SIZE));
195 printf("machine: %s\n", sparc64_model);
197 cpu_identify(rdpr(ver), PCPU_GET(clock), curcpu);
201 cpu_pcpu_init(struct pcpu *pcpu, int cpuid, size_t size)
203 struct intr_request *ir;
206 pcpu->pc_irtail = &pcpu->pc_irhead;
207 for (i = 0; i < IR_FREE; i++) {
208 ir = &pcpu->pc_irpool[i];
209 ir->ir_next = pcpu->pc_irfree;
210 pcpu->pc_irfree = ir;
221 if (td->td_md.md_spinlock_count == 0) {
223 wrpr(pil, 0, PIL_TICK);
224 td->td_md.md_spinlock_count = 1;
225 td->td_md.md_saved_pil = pil;
227 td->td_md.md_spinlock_count++;
239 pil = td->td_md.md_saved_pil;
240 td->td_md.md_spinlock_count--;
241 if (td->td_md.md_spinlock_count == 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_portid_prop(cpu_impl),
265 &portid, sizeof(portid)) <= 0)
275 cpu_portid_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_ULTRASPARCIII)
350 cheetah_init(cpu_impl);
351 else if (cpu_impl == CPU_IMPL_SPARC64V)
355 * Clear (S)TICK timer (including NPT).
357 tick_clear(cpu_impl);
360 * UltraSparc II[e,i] based systems come up with the tick interrupt
361 * enabled and a handler that resets the tick counter, causing DELAY()
362 * to not work properly when used early in boot.
363 * UltraSPARC III based systems come up with the system tick interrupt
364 * enabled, causing an interrupt storm on startup since they are not
370 * Set up Open Firmware entry points.
373 ofw_vec = (u_long)vec;
376 * Parse metadata if present and fetch parameters. Must be before the
377 * console is inited so cninit() gets the right value of boothowto.
380 preload_metadata = mdp;
381 kmdp = preload_search_by_type("elf kernel");
383 boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);
384 init_static_kenv(MD_FETCH(kmdp, MODINFOMD_ENVP, char *),
386 end = MD_FETCH(kmdp, MODINFOMD_KERNEND, vm_offset_t);
387 kernel_tlb_slots = MD_FETCH(kmdp, MODINFOMD_DTLB_SLOTS,
389 kernel_tlbs = (void *)preload_search_info(kmdp,
390 MODINFO_METADATA | MODINFOMD_DTLB);
397 * Initialize Open Firmware (needed for console).
399 OF_install(OFW_STD_DIRECT, 0);
403 * Prime our per-CPU data page for use. Note, we are using it for
404 * our stack, so don't pass the real size (PAGE_SIZE) to pcpu_init
405 * or it'll zero it out from under us.
407 pc = (struct pcpu *)(pcpu0 + (PCPU_PAGES * PAGE_SIZE)) - 1;
408 pcpu_init(pc, 0, sizeof(struct pcpu));
409 pc->pc_addr = (vm_offset_t)pcpu0;
410 pc->pc_impl = cpu_impl;
411 pc->pc_mid = cpu_get_mid(cpu_impl);
412 pc->pc_tlb_ctx = TLB_CTX_USER_MIN;
413 pc->pc_tlb_ctx_min = TLB_CTX_USER_MIN;
414 pc->pc_tlb_ctx_max = TLB_CTX_USER_MAX;
417 * Determine the OFW node and frequency of the BSP (and ensure the
418 * BSP is in the device tree in the first place).
421 pc->pc_node = find_bsp(root, pc->pc_mid, cpu_impl);
422 if (pc->pc_node == 0)
423 OF_panic("%s: cannot find boot CPU node", __func__);
424 if (OF_getprop(pc->pc_node, "clock-frequency", &pc->pc_clock,
425 sizeof(pc->pc_clock)) <= 0)
426 OF_panic("%s: cannot determine boot CPU clock", __func__);
429 * Panic if there is no metadata. Most likely the kernel was booted
430 * directly, instead of through loader(8).
432 if (mdp == NULL || kmdp == NULL || end == 0 ||
433 kernel_tlb_slots == 0 || kernel_tlbs == NULL)
434 OF_panic("%s: missing loader metadata.\nThis probably means "
435 "you are not using loader(8).", __func__);
438 * Work around the broken loader behavior of not demapping no
439 * longer used kernel TLB slots when unloading the kernel or
442 for (va = KERNBASE + (kernel_tlb_slots - 1) * PAGE_SIZE_4M;
443 va >= roundup2(end, PAGE_SIZE_4M); va -= PAGE_SIZE_4M) {
445 OF_printf("demapping unused kernel TLB slot "
446 "(va %#lx - %#lx)\n", va, va + PAGE_SIZE_4M - 1);
447 stxa(TLB_DEMAP_VA(va) | TLB_DEMAP_PRIMARY | TLB_DEMAP_PAGE,
449 stxa(TLB_DEMAP_VA(va) | TLB_DEMAP_PRIMARY | TLB_DEMAP_PAGE,
456 * Determine the TLB slot maxima, which are expected to be
457 * equal across all CPUs.
458 * NB: for cheetah-class CPUs, these properties only refer
461 if (OF_getprop(pc->pc_node, "#dtlb-entries", &dtlb_slots,
462 sizeof(dtlb_slots)) == -1)
463 OF_panic("%s: cannot determine number of dTLB slots",
465 if (OF_getprop(pc->pc_node, "#itlb-entries", &itlb_slots,
466 sizeof(itlb_slots)) == -1)
467 OF_panic("%s: cannot determine number of iTLB slots",
471 * Initialize and enable the caches. Note that this may include
472 * applying workarounds.
475 cache_enable(cpu_impl);
476 uma_set_align(pc->pc_cache.dc_linesize - 1);
478 cpu_block_copy = bcopy;
479 cpu_block_zero = bzero;
480 getenv_int("machdep.use_vis", &cpu_use_vis);
483 case CPU_IMPL_SPARC64:
484 case CPU_IMPL_ULTRASPARCI:
485 case CPU_IMPL_ULTRASPARCII:
486 case CPU_IMPL_ULTRASPARCIIi:
487 case CPU_IMPL_ULTRASPARCIIe:
488 case CPU_IMPL_ULTRASPARCIII: /* NB: we've disabled P$. */
489 case CPU_IMPL_ULTRASPARCIIIp:
490 case CPU_IMPL_ULTRASPARCIIIi:
491 case CPU_IMPL_ULTRASPARCIV:
492 case CPU_IMPL_ULTRASPARCIVp:
493 case CPU_IMPL_ULTRASPARCIIIip:
494 cpu_block_copy = spitfire_block_copy;
495 cpu_block_zero = spitfire_block_zero;
497 case CPU_IMPL_SPARC64V:
498 cpu_block_copy = zeus_block_copy;
499 cpu_block_zero = zeus_block_zero;
509 * Initialize virtual memory and calculate physmem.
511 pmap_bootstrap(cpu_impl);
514 * Initialize tunables.
516 init_param2(physmem);
517 env = kern_getenv("kernelname");
519 strlcpy(kernelname, env, sizeof(kernelname));
524 * Initialize the interrupt tables.
529 * Initialize proc0, set kstack0, frame0, curthread and curpcb.
531 proc_linkup0(&proc0, &thread0);
532 proc0.p_md.md_sigtramp = NULL;
533 proc0.p_md.md_utrap = NULL;
534 thread0.td_kstack = kstack0;
535 thread0.td_kstack_pages = KSTACK_PAGES;
536 thread0.td_pcb = (struct pcb *)
537 (thread0.td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1;
538 frame0.tf_tstate = TSTATE_IE | TSTATE_PEF | TSTATE_PRIV;
539 thread0.td_frame = &frame0;
540 pc->pc_curthread = &thread0;
541 pc->pc_curpcb = thread0.td_pcb;
544 * Initialize global registers.
549 * Take over the trap table via the PROM. Using the PROM for this
550 * is necessary in order to set obp-control-relinquished to true
551 * within the PROM so obtaining /virtual-memory/translations doesn't
552 * trigger a fatal reset error or worse things further down the road.
553 * XXX it should be possible to use this solely instead of writing
554 * %tba in cpu_setregs(). Doing so causes a hang however.
556 * NB: the low-level console drivers require a working DELAY() and
557 * some compiler optimizations may cause the curthread accesses of
558 * mutex(9) to be factored out even if the latter aren't actually
559 * called. Both of these require PCPU_REG to be set. However, we
560 * can't set PCPU_REG without also taking over the trap table or the
561 * firmware will overwrite it.
563 sun4u_set_traptable(tl0_base);
566 * Initialize the dynamic per-CPU area for the BSP and the message
567 * buffer (after setting the trap table).
569 dpcpu_init(dpcpu0, 0);
570 msgbufinit(msgbufp, msgbufsize);
573 * Initialize mutexes.
578 * Initialize console now that we have a reasonable set of system
584 * Finish the interrupt initialization now that mutexes work and
589 wrpr(pstate, 0, PSTATE_KERNEL);
591 OF_getprop(root, "name", sparc64_model, sizeof(sparc64_model) - 1);
596 if (boothowto & RB_KDB)
597 kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
602 sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
604 struct trapframe *tf;
605 struct sigframe *sfp;
618 PROC_LOCK_ASSERT(p, MA_OWNED);
619 sig = ksi->ksi_signo;
621 mtx_assert(&psp->ps_mtx, MA_OWNED);
623 sp = tf->tf_sp + SPOFF;
624 oonstack = sigonstack(sp);
626 CTR4(KTR_SIG, "sendsig: td=%p (%s) catcher=%p sig=%d", td, p->p_comm,
629 /* Make sure we have a signal trampoline to return to. */
630 if (p->p_md.md_sigtramp == NULL) {
632 * No signal trampoline... kill the process.
634 CTR0(KTR_SIG, "sendsig: no sigtramp");
635 printf("sendsig: %s is too old, rebuild it\n", p->p_comm);
640 /* Save user context. */
641 bzero(&sf, sizeof(sf));
642 get_mcontext(td, &sf.sf_uc.uc_mcontext, 0);
643 sf.sf_uc.uc_sigmask = *mask;
644 sf.sf_uc.uc_stack = td->td_sigstk;
645 sf.sf_uc.uc_stack.ss_flags = (td->td_pflags & TDP_ALTSTACK) ?
646 ((oonstack) ? SS_ONSTACK : 0) : SS_DISABLE;
648 /* Allocate and validate space for the signal handler context. */
649 if ((td->td_pflags & TDP_ALTSTACK) != 0 && !oonstack &&
650 SIGISMEMBER(psp->ps_sigonstack, sig)) {
651 sfp = (struct sigframe *)((uintptr_t)td->td_sigstk.ss_sp +
652 td->td_sigstk.ss_size - sizeof(struct sigframe));
654 sfp = (struct sigframe *)sp - 1;
655 mtx_unlock(&psp->ps_mtx);
658 fp = (struct frame *)sfp - 1;
660 /* Build the argument list for the signal handler. */
662 tf->tf_out[2] = (register_t)&sfp->sf_uc;
663 tf->tf_out[4] = (register_t)catcher;
664 if (SIGISMEMBER(psp->ps_siginfo, sig)) {
665 /* Signal handler installed with SA_SIGINFO. */
666 tf->tf_out[1] = (register_t)&sfp->sf_si;
668 /* Fill in POSIX parts. */
669 sf.sf_si = ksi->ksi_info;
670 sf.sf_si.si_signo = sig; /* maybe a translated signal */
672 /* Old FreeBSD-style arguments. */
673 tf->tf_out[1] = ksi->ksi_code;
674 tf->tf_out[3] = (register_t)ksi->ksi_addr;
677 /* Copy the sigframe out to the user's stack. */
678 if (rwindow_save(td) != 0 || copyout(&sf, sfp, sizeof(*sfp)) != 0 ||
679 suword(&fp->fr_in[6], tf->tf_out[6]) != 0) {
681 * Something is wrong with the stack pointer.
682 * ...Kill the process.
684 CTR2(KTR_SIG, "sendsig: sigexit td=%p sfp=%p", td, sfp);
690 tf->tf_tpc = (u_long)p->p_md.md_sigtramp;
691 tf->tf_tnpc = tf->tf_tpc + 4;
692 tf->tf_sp = (u_long)fp - SPOFF;
694 CTR3(KTR_SIG, "sendsig: return td=%p pc=%#lx sp=%#lx", td, tf->tf_tpc,
698 mtx_lock(&psp->ps_mtx);
701 #ifndef _SYS_SYSPROTO_H_
702 struct sigreturn_args {
711 sys_sigreturn(struct thread *td, struct sigreturn_args *uap)
719 if (rwindow_save(td)) {
724 CTR2(KTR_SIG, "sigreturn: td=%p ucp=%p", td, uap->sigcntxp);
725 if (copyin(uap->sigcntxp, &uc, sizeof(uc)) != 0) {
726 CTR1(KTR_SIG, "sigreturn: efault td=%p", td);
730 mc = &uc.uc_mcontext;
731 error = set_mcontext(td, mc);
735 kern_sigprocmask(td, SIG_SETMASK, &uc.uc_sigmask, NULL, 0);
737 CTR4(KTR_SIG, "sigreturn: return td=%p pc=%#lx sp=%#lx tstate=%#lx",
738 td, mc->_mc_tpc, mc->_mc_sp, mc->_mc_tstate);
739 return (EJUSTRETURN);
743 * Construct a PCB from a trapframe. This is called from kdb_trap() where
744 * we want to start a backtrace from the function that caused us to enter
745 * the debugger. We have the context in the trapframe, but base the trace
746 * on the PCB. The PCB doesn't have to be perfect, as long as it contains
747 * enough for a backtrace.
750 makectx(struct trapframe *tf, struct pcb *pcb)
753 pcb->pcb_pc = tf->tf_tpc;
754 pcb->pcb_sp = tf->tf_sp;
758 get_mcontext(struct thread *td, mcontext_t *mc, int flags)
760 struct trapframe *tf;
766 * Copy the registers which will be restored by tl0_ret() from the
768 * Note that we skip %g7 which is used as the userland TLS register
771 mc->_mc_flags = _MC_VERSION;
772 mc->mc_global[1] = tf->tf_global[1];
773 mc->mc_global[2] = tf->tf_global[2];
774 mc->mc_global[3] = tf->tf_global[3];
775 mc->mc_global[4] = tf->tf_global[4];
776 mc->mc_global[5] = tf->tf_global[5];
777 mc->mc_global[6] = tf->tf_global[6];
778 if (flags & GET_MC_CLEAR_RET) {
782 mc->mc_out[0] = tf->tf_out[0];
783 mc->mc_out[1] = tf->tf_out[1];
785 mc->mc_out[2] = tf->tf_out[2];
786 mc->mc_out[3] = tf->tf_out[3];
787 mc->mc_out[4] = tf->tf_out[4];
788 mc->mc_out[5] = tf->tf_out[5];
789 mc->mc_out[6] = tf->tf_out[6];
790 mc->mc_out[7] = tf->tf_out[7];
791 mc->_mc_fprs = tf->tf_fprs;
792 mc->_mc_fsr = tf->tf_fsr;
793 mc->_mc_gsr = tf->tf_gsr;
794 mc->_mc_tnpc = tf->tf_tnpc;
795 mc->_mc_tpc = tf->tf_tpc;
796 mc->_mc_tstate = tf->tf_tstate;
797 mc->_mc_y = tf->tf_y;
799 if ((tf->tf_fprs & FPRS_FEF) != 0) {
800 savefpctx(pcb->pcb_ufp);
801 tf->tf_fprs &= ~FPRS_FEF;
802 pcb->pcb_flags |= PCB_FEF;
804 if ((pcb->pcb_flags & PCB_FEF) != 0) {
805 bcopy(pcb->pcb_ufp, mc->mc_fp, sizeof(mc->mc_fp));
806 mc->_mc_fprs |= FPRS_FEF;
813 set_mcontext(struct thread *td, mcontext_t *mc)
815 struct trapframe *tf;
818 if (!TSTATE_SECURE(mc->_mc_tstate) ||
819 (mc->_mc_flags & ((1L << _MC_VERSION_BITS) - 1)) != _MC_VERSION)
823 /* Make sure the windows are spilled first. */
826 * Copy the registers which will be restored by tl0_ret() to the
828 * Note that we skip %g7 which is used as the userland TLS register
831 tf->tf_global[1] = mc->mc_global[1];
832 tf->tf_global[2] = mc->mc_global[2];
833 tf->tf_global[3] = mc->mc_global[3];
834 tf->tf_global[4] = mc->mc_global[4];
835 tf->tf_global[5] = mc->mc_global[5];
836 tf->tf_global[6] = mc->mc_global[6];
837 tf->tf_out[0] = mc->mc_out[0];
838 tf->tf_out[1] = mc->mc_out[1];
839 tf->tf_out[2] = mc->mc_out[2];
840 tf->tf_out[3] = mc->mc_out[3];
841 tf->tf_out[4] = mc->mc_out[4];
842 tf->tf_out[5] = mc->mc_out[5];
843 tf->tf_out[6] = mc->mc_out[6];
844 tf->tf_out[7] = mc->mc_out[7];
845 tf->tf_fprs = mc->_mc_fprs;
846 tf->tf_fsr = mc->_mc_fsr;
847 tf->tf_gsr = mc->_mc_gsr;
848 tf->tf_tnpc = mc->_mc_tnpc;
849 tf->tf_tpc = mc->_mc_tpc;
850 tf->tf_tstate = mc->_mc_tstate;
851 tf->tf_y = mc->_mc_y;
852 if ((mc->_mc_fprs & FPRS_FEF) != 0) {
854 bcopy(mc->mc_fp, pcb->pcb_ufp, sizeof(pcb->pcb_ufp));
855 pcb->pcb_flags |= PCB_FEF;
861 * Exit the kernel and execute a firmware call that will not return, as
862 * specified by the arguments.
865 cpu_shutdown(void *args)
875 * Flush the D-cache for non-DMA I/O so that the I-cache can
876 * be made coherent later.
879 cpu_flush_dcache(void *ptr, size_t len)
885 /* Get current clock frequency for the given CPU ID. */
887 cpu_est_clockrate(int cpu_id, uint64_t *rate)
891 pc = pcpu_find(cpu_id);
892 if (pc == NULL || rate == NULL)
894 *rate = pc->pc_clock;
899 * Duplicate OF_exit() with a different firmware call function that restores
900 * the trap table, otherwise a RED state exception is triggered in at least
901 * some firmware versions.
920 sparc64_shutdown_final(void *dummy, int howto)
927 (cell_t)"SUNW,power-off",
932 /* Turn the power off? */
933 if ((howto & RB_POWEROFF) != 0)
935 /* In case of halt, return to the firmware. */
936 if ((howto & RB_HALT) != 0)
944 /* Insert code to halt (until next interrupt) for the idle loop. */
948 cpu_idle_wakeup(int cpu)
955 ptrace_set_pc(struct thread *td, u_long addr)
958 td->td_frame->tf_tpc = addr;
959 td->td_frame->tf_tnpc = addr + 4;
964 ptrace_single_step(struct thread *td)
972 ptrace_clear_single_step(struct thread *td)
980 exec_setregs(struct thread *td, struct image_params *imgp, u_long stack)
982 struct trapframe *tf;
987 /* XXX no cpu_exec */
989 p->p_md.md_sigtramp = NULL;
990 if (p->p_md.md_utrap != NULL) {
991 utrap_free(p->p_md.md_utrap);
992 p->p_md.md_utrap = NULL;
997 sp = rounddown(stack, 16);
998 bzero(pcb, sizeof(*pcb));
999 bzero(tf, sizeof(*tf));
1000 tf->tf_out[0] = stack;
1001 tf->tf_out[3] = p->p_sysent->sv_psstrings;
1002 tf->tf_out[6] = sp - SPOFF - sizeof(struct frame);
1003 tf->tf_tnpc = imgp->entry_addr + 4;
1004 tf->tf_tpc = imgp->entry_addr;
1006 * While we could adhere to the memory model indicated in the ELF
1007 * header, it turns out that just always using TSO performs best.
1009 tf->tf_tstate = TSTATE_IE | TSTATE_PEF | TSTATE_MM_TSO;
1011 td->td_retval[0] = tf->tf_out[0];
1012 td->td_retval[1] = tf->tf_out[1];
1016 fill_regs(struct thread *td, struct reg *regs)
1019 bcopy(td->td_frame, regs, sizeof(*regs));
1024 set_regs(struct thread *td, struct reg *regs)
1026 struct trapframe *tf;
1028 if (!TSTATE_SECURE(regs->r_tstate))
1031 regs->r_wstate = tf->tf_wstate;
1032 bcopy(regs, tf, sizeof(*regs));
1037 fill_dbregs(struct thread *td, struct dbreg *dbregs)
1044 set_dbregs(struct thread *td, struct dbreg *dbregs)
1051 fill_fpregs(struct thread *td, struct fpreg *fpregs)
1053 struct trapframe *tf;
1058 bcopy(pcb->pcb_ufp, fpregs->fr_regs, sizeof(fpregs->fr_regs));
1059 fpregs->fr_fsr = tf->tf_fsr;
1060 fpregs->fr_gsr = tf->tf_gsr;
1065 set_fpregs(struct thread *td, struct fpreg *fpregs)
1067 struct trapframe *tf;
1072 tf->tf_fprs &= ~FPRS_FEF;
1073 bcopy(fpregs->fr_regs, pcb->pcb_ufp, sizeof(pcb->pcb_ufp));
1074 tf->tf_fsr = fpregs->fr_fsr;
1075 tf->tf_gsr = fpregs->fr_gsr;
1082 struct md_utrap *ut;
1084 ut = malloc(sizeof(struct md_utrap), M_SUBPROC, M_WAITOK | M_ZERO);
1090 utrap_free(struct md_utrap *ut)
1096 mtx_pool_lock(mtxpool_sleep, ut);
1098 refcnt = ut->ut_refcnt;
1099 mtx_pool_unlock(mtxpool_sleep, ut);
1101 free(ut, M_SUBPROC);
1105 utrap_hold(struct md_utrap *ut)
1110 mtx_pool_lock(mtxpool_sleep, ut);
1112 mtx_pool_unlock(mtxpool_sleep, ut);