17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5f18fc278Sjohnlev * Common Development and Distribution License (the "License").
6f18fc278Sjohnlev * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate *
87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate * and limitations under the License.
127c478bd9Sstevel@tonic-gate *
137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate *
197c478bd9Sstevel@tonic-gate * CDDL HEADER END
207c478bd9Sstevel@tonic-gate */
217c478bd9Sstevel@tonic-gate /*
22ae115bc7Smrj * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
237c478bd9Sstevel@tonic-gate * Use is subject to license terms.
24*399ca3a7SJohn Levon *
25*399ca3a7SJohn Levon * Copyright 2018 Joyent, Inc.
267c478bd9Sstevel@tonic-gate */
277c478bd9Sstevel@tonic-gate
287c478bd9Sstevel@tonic-gate /*
297c478bd9Sstevel@tonic-gate * isa-dependent portions of the kmdb target
307c478bd9Sstevel@tonic-gate */
317c478bd9Sstevel@tonic-gate
327c478bd9Sstevel@tonic-gate #include <kmdb/kvm.h>
337c478bd9Sstevel@tonic-gate #include <kmdb/kmdb_kdi.h>
347c478bd9Sstevel@tonic-gate #include <kmdb/kmdb_asmutil.h>
357c478bd9Sstevel@tonic-gate #include <mdb/mdb_debug.h>
367c478bd9Sstevel@tonic-gate #include <mdb/mdb_err.h>
377c478bd9Sstevel@tonic-gate #include <mdb/mdb_list.h>
387c478bd9Sstevel@tonic-gate #include <mdb/mdb_target_impl.h>
397c478bd9Sstevel@tonic-gate #include <mdb/mdb_isautil.h>
407c478bd9Sstevel@tonic-gate #include <mdb/mdb_kreg_impl.h>
417c478bd9Sstevel@tonic-gate #include <mdb/mdb.h>
427c478bd9Sstevel@tonic-gate
437c478bd9Sstevel@tonic-gate #include <sys/types.h>
447c478bd9Sstevel@tonic-gate #include <sys/frame.h>
457c478bd9Sstevel@tonic-gate #include <sys/trap.h>
467c478bd9Sstevel@tonic-gate #include <sys/bitmap.h>
477aec1d6eScindi #include <sys/pci_impl.h>
487c478bd9Sstevel@tonic-gate
497c478bd9Sstevel@tonic-gate /* Higher than the highest trap number for which we have a defined specifier */
507c478bd9Sstevel@tonic-gate #define KMT_MAXTRAPNO 0x20
517c478bd9Sstevel@tonic-gate
527c478bd9Sstevel@tonic-gate #define IOPORTLIMIT 0xffff /* XXX find a new home for this */
537c478bd9Sstevel@tonic-gate
547c478bd9Sstevel@tonic-gate const char *
kmt_def_dismode(void)557c478bd9Sstevel@tonic-gate kmt_def_dismode(void)
567c478bd9Sstevel@tonic-gate {
577c478bd9Sstevel@tonic-gate #ifdef __amd64
587c478bd9Sstevel@tonic-gate return ("amd64");
597c478bd9Sstevel@tonic-gate #else
607c478bd9Sstevel@tonic-gate return ("ia32");
617c478bd9Sstevel@tonic-gate #endif
627c478bd9Sstevel@tonic-gate }
637c478bd9Sstevel@tonic-gate
647c478bd9Sstevel@tonic-gate int
kmt_step_out_validate(mdb_tgt_t * t,uintptr_t pc)657c478bd9Sstevel@tonic-gate kmt_step_out_validate(mdb_tgt_t *t, uintptr_t pc)
667c478bd9Sstevel@tonic-gate {
677c478bd9Sstevel@tonic-gate kmt_data_t *kmt = t->t_data;
687c478bd9Sstevel@tonic-gate int i;
697c478bd9Sstevel@tonic-gate
707c478bd9Sstevel@tonic-gate for (i = 0; i < sizeof (kmt->kmt_intrsyms) / sizeof (GElf_Sym); i++) {
717c478bd9Sstevel@tonic-gate GElf_Sym *sym = (GElf_Sym *)&kmt->kmt_intrsyms + i;
727c478bd9Sstevel@tonic-gate
737c478bd9Sstevel@tonic-gate if (pc >= sym->st_value && pc < sym->st_value + sym->st_size)
747c478bd9Sstevel@tonic-gate return (0);
757c478bd9Sstevel@tonic-gate }
767c478bd9Sstevel@tonic-gate
777c478bd9Sstevel@tonic-gate return (1);
787c478bd9Sstevel@tonic-gate }
797c478bd9Sstevel@tonic-gate
807c478bd9Sstevel@tonic-gate /*
817c478bd9Sstevel@tonic-gate * Determine the return address for the current frame.
827c478bd9Sstevel@tonic-gate */
837c478bd9Sstevel@tonic-gate int
kmt_step_out(mdb_tgt_t * t,uintptr_t * p)847c478bd9Sstevel@tonic-gate kmt_step_out(mdb_tgt_t *t, uintptr_t *p)
857c478bd9Sstevel@tonic-gate {
867c478bd9Sstevel@tonic-gate mdb_instr_t instr;
877c478bd9Sstevel@tonic-gate kreg_t pc, sp, fp;
887c478bd9Sstevel@tonic-gate
897c478bd9Sstevel@tonic-gate (void) kmdb_dpi_get_register("pc", &pc);
907c478bd9Sstevel@tonic-gate (void) kmdb_dpi_get_register("sp", &sp);
917c478bd9Sstevel@tonic-gate (void) kmdb_dpi_get_register("fp", &fp);
927c478bd9Sstevel@tonic-gate
937c478bd9Sstevel@tonic-gate if (mdb_tgt_vread(t, &instr, sizeof (mdb_instr_t), pc) !=
947c478bd9Sstevel@tonic-gate sizeof (mdb_instr_t))
957c478bd9Sstevel@tonic-gate return (-1); /* errno is set for us */
967c478bd9Sstevel@tonic-gate
977c478bd9Sstevel@tonic-gate if (!kmt_step_out_validate(t, pc))
987c478bd9Sstevel@tonic-gate return (set_errno(EMDB_TGTNOTSUP));
997c478bd9Sstevel@tonic-gate
1007c478bd9Sstevel@tonic-gate return (mdb_isa_step_out(t, p, pc, fp, sp, instr));
1017c478bd9Sstevel@tonic-gate }
1027c478bd9Sstevel@tonic-gate
1037c478bd9Sstevel@tonic-gate /*
1047c478bd9Sstevel@tonic-gate * Return the address of the next instruction following a call, or return -1
1057c478bd9Sstevel@tonic-gate * and set errno to EAGAIN if the target should just single-step.
1067c478bd9Sstevel@tonic-gate */
1077c478bd9Sstevel@tonic-gate int
kmt_next(mdb_tgt_t * t,uintptr_t * p)1087c478bd9Sstevel@tonic-gate kmt_next(mdb_tgt_t *t, uintptr_t *p)
1097c478bd9Sstevel@tonic-gate {
1107c478bd9Sstevel@tonic-gate kreg_t pc;
1117c478bd9Sstevel@tonic-gate mdb_instr_t instr;
1127c478bd9Sstevel@tonic-gate
1137c478bd9Sstevel@tonic-gate (void) kmdb_dpi_get_register("pc", &pc);
1147c478bd9Sstevel@tonic-gate
1157c478bd9Sstevel@tonic-gate if (mdb_tgt_vread(t, &instr, sizeof (mdb_instr_t), pc) !=
1167c478bd9Sstevel@tonic-gate sizeof (mdb_instr_t))
1177c478bd9Sstevel@tonic-gate return (-1); /* errno is set for us */
1187c478bd9Sstevel@tonic-gate
1197c478bd9Sstevel@tonic-gate return (mdb_isa_next(t, p, pc, instr));
1207c478bd9Sstevel@tonic-gate }
1217c478bd9Sstevel@tonic-gate
1227c478bd9Sstevel@tonic-gate /*ARGSUSED*/
1237c478bd9Sstevel@tonic-gate static int
kmt_stack_common(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv,int cpuid,mdb_tgt_stack_f * func)1247c478bd9Sstevel@tonic-gate kmt_stack_common(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv,
1257c478bd9Sstevel@tonic-gate int cpuid, mdb_tgt_stack_f *func)
1267c478bd9Sstevel@tonic-gate {
1277c478bd9Sstevel@tonic-gate const mdb_tgt_gregset_t *grp = NULL;
1287c478bd9Sstevel@tonic-gate mdb_tgt_gregset_t gregs;
1297c478bd9Sstevel@tonic-gate void *arg = (void *)(uintptr_t)mdb.m_nargs;
1307c478bd9Sstevel@tonic-gate
1317c478bd9Sstevel@tonic-gate if (flags & DCMD_ADDRSPEC) {
1327c478bd9Sstevel@tonic-gate bzero(&gregs, sizeof (gregs));
1337c478bd9Sstevel@tonic-gate gregs.kregs[KREG_FP] = addr;
1347c478bd9Sstevel@tonic-gate grp = &gregs;
1357c478bd9Sstevel@tonic-gate } else
1367c478bd9Sstevel@tonic-gate grp = kmdb_dpi_get_gregs(cpuid);
1377c478bd9Sstevel@tonic-gate
138acbc304dSjohnlev if (grp == NULL) {
139acbc304dSjohnlev warn("failed to retrieve registers for cpu %d", cpuid);
140acbc304dSjohnlev return (DCMD_ERR);
141acbc304dSjohnlev }
142acbc304dSjohnlev
1437c478bd9Sstevel@tonic-gate if (argc != 0) {
1447c478bd9Sstevel@tonic-gate if (argv->a_type == MDB_TYPE_CHAR || argc > 1)
1457c478bd9Sstevel@tonic-gate return (DCMD_USAGE);
1467c478bd9Sstevel@tonic-gate
1477c478bd9Sstevel@tonic-gate if (argv->a_type == MDB_TYPE_STRING)
1487c478bd9Sstevel@tonic-gate arg = (void *)(uintptr_t)mdb_strtoull(argv->a_un.a_str);
1497c478bd9Sstevel@tonic-gate else
1507c478bd9Sstevel@tonic-gate arg = (void *)(uintptr_t)argv->a_un.a_val;
1517c478bd9Sstevel@tonic-gate }
1527c478bd9Sstevel@tonic-gate
1537c478bd9Sstevel@tonic-gate (void) mdb_isa_kvm_stack_iter(mdb.m_target, grp, func, arg);
1547c478bd9Sstevel@tonic-gate
1557c478bd9Sstevel@tonic-gate return (DCMD_OK);
1567c478bd9Sstevel@tonic-gate }
1577c478bd9Sstevel@tonic-gate
1587c478bd9Sstevel@tonic-gate int
kmt_cpustack(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv,int cpuid,int verbose)1597c478bd9Sstevel@tonic-gate kmt_cpustack(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv,
1607c478bd9Sstevel@tonic-gate int cpuid, int verbose)
1617c478bd9Sstevel@tonic-gate {
1627c478bd9Sstevel@tonic-gate return (kmt_stack_common(addr, flags, argc, argv, cpuid,
1637c478bd9Sstevel@tonic-gate (verbose ? mdb_isa_kvm_framev : mdb_isa_kvm_frame)));
1647c478bd9Sstevel@tonic-gate }
1657c478bd9Sstevel@tonic-gate
1667c478bd9Sstevel@tonic-gate int
kmt_stack(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)1677c478bd9Sstevel@tonic-gate kmt_stack(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1687c478bd9Sstevel@tonic-gate {
1697c478bd9Sstevel@tonic-gate return (kmt_stack_common(addr, flags, argc, argv, DPI_MASTER_CPUID,
1707c478bd9Sstevel@tonic-gate mdb_isa_kvm_frame));
1717c478bd9Sstevel@tonic-gate }
1727c478bd9Sstevel@tonic-gate
1737c478bd9Sstevel@tonic-gate int
kmt_stackv(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)1747c478bd9Sstevel@tonic-gate kmt_stackv(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1757c478bd9Sstevel@tonic-gate {
1767c478bd9Sstevel@tonic-gate return (kmt_stack_common(addr, flags, argc, argv, DPI_MASTER_CPUID,
1777c478bd9Sstevel@tonic-gate mdb_isa_kvm_framev));
1787c478bd9Sstevel@tonic-gate }
1797c478bd9Sstevel@tonic-gate
1807c478bd9Sstevel@tonic-gate int
kmt_stackr(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)1817c478bd9Sstevel@tonic-gate kmt_stackr(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1827c478bd9Sstevel@tonic-gate {
1837c478bd9Sstevel@tonic-gate return (kmt_stack_common(addr, flags, argc, argv, DPI_MASTER_CPUID,
1847c478bd9Sstevel@tonic-gate mdb_isa_kvm_framev));
1857c478bd9Sstevel@tonic-gate }
1867c478bd9Sstevel@tonic-gate
1877c478bd9Sstevel@tonic-gate /*ARGSUSED*/
1887c478bd9Sstevel@tonic-gate void
kmt_printregs(const mdb_tgt_gregset_t * gregs)1897c478bd9Sstevel@tonic-gate kmt_printregs(const mdb_tgt_gregset_t *gregs)
1907c478bd9Sstevel@tonic-gate {
1917c478bd9Sstevel@tonic-gate mdb_isa_printregs(gregs);
1927c478bd9Sstevel@tonic-gate }
1937c478bd9Sstevel@tonic-gate
1947c478bd9Sstevel@tonic-gate #define IOCHECK_NOWARN 0
1957c478bd9Sstevel@tonic-gate #define IOCHECK_WARN 1
1967c478bd9Sstevel@tonic-gate
1977c478bd9Sstevel@tonic-gate static int
kmt_io_check(uint64_t nbytes,uintptr_t addr,int dowarn)1987c478bd9Sstevel@tonic-gate kmt_io_check(uint64_t nbytes, uintptr_t addr, int dowarn)
1997c478bd9Sstevel@tonic-gate {
2007c478bd9Sstevel@tonic-gate if (addr > IOPORTLIMIT) {
2017c478bd9Sstevel@tonic-gate if (dowarn)
2027c478bd9Sstevel@tonic-gate warn("port address must be 0-%#x\n", IOPORTLIMIT);
2037c478bd9Sstevel@tonic-gate return (set_errno(EINVAL));
2047c478bd9Sstevel@tonic-gate }
2057c478bd9Sstevel@tonic-gate
2067c478bd9Sstevel@tonic-gate if (nbytes != 1 && nbytes != 2 && nbytes != 4) {
2077c478bd9Sstevel@tonic-gate if (dowarn)
2087c478bd9Sstevel@tonic-gate warn("port access must be 1, 2, or 4 bytes\n");
2097c478bd9Sstevel@tonic-gate return (set_errno(EINVAL));
2107c478bd9Sstevel@tonic-gate }
2117c478bd9Sstevel@tonic-gate
2127c478bd9Sstevel@tonic-gate if ((addr & (nbytes - 1)) != 0) {
2137c478bd9Sstevel@tonic-gate if (dowarn) {
2147c478bd9Sstevel@tonic-gate warn("address for %llu-byte access must be %llu-byte "
2157c478bd9Sstevel@tonic-gate "aligned\n", (u_longlong_t)nbytes,
2167c478bd9Sstevel@tonic-gate (u_longlong_t)nbytes);
2177c478bd9Sstevel@tonic-gate }
2187c478bd9Sstevel@tonic-gate return (set_errno(EINVAL));
2197c478bd9Sstevel@tonic-gate }
2207c478bd9Sstevel@tonic-gate
2217c478bd9Sstevel@tonic-gate return (0);
2227c478bd9Sstevel@tonic-gate }
2237c478bd9Sstevel@tonic-gate
2247c478bd9Sstevel@tonic-gate /*ARGSUSED1*/
2257c478bd9Sstevel@tonic-gate int
kmt_in_dcmd(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)2267c478bd9Sstevel@tonic-gate kmt_in_dcmd(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2277c478bd9Sstevel@tonic-gate {
2287c478bd9Sstevel@tonic-gate uint64_t len = 0;
2297c478bd9Sstevel@tonic-gate uint32_t buf;
2307c478bd9Sstevel@tonic-gate
2317c478bd9Sstevel@tonic-gate if (mdb_getopts(argc, argv,
2327c478bd9Sstevel@tonic-gate 'L', MDB_OPT_UINT64, &len,
2337c478bd9Sstevel@tonic-gate NULL) != argc)
2347c478bd9Sstevel@tonic-gate return (DCMD_USAGE);
2357c478bd9Sstevel@tonic-gate
2367c478bd9Sstevel@tonic-gate if (len == 0)
2377c478bd9Sstevel@tonic-gate len = mdb.m_dcount;
2387c478bd9Sstevel@tonic-gate
2397c478bd9Sstevel@tonic-gate if (kmt_io_check(len, addr, IOCHECK_WARN) < 0)
2407c478bd9Sstevel@tonic-gate return (DCMD_ERR);
2417c478bd9Sstevel@tonic-gate
2427c478bd9Sstevel@tonic-gate if (mdb_tgt_ioread(mdb.m_target, &buf, len, addr) < 0) {
2437c478bd9Sstevel@tonic-gate warn("failed to read from port 0x%llx", (u_longlong_t)addr);
2447c478bd9Sstevel@tonic-gate return (DCMD_ERR);
2457c478bd9Sstevel@tonic-gate }
2467c478bd9Sstevel@tonic-gate
2477c478bd9Sstevel@tonic-gate mdb_printf("%x\n", buf);
2487c478bd9Sstevel@tonic-gate
2497c478bd9Sstevel@tonic-gate return (DCMD_OK);
2507c478bd9Sstevel@tonic-gate }
2517c478bd9Sstevel@tonic-gate
2527aec1d6eScindi static uint64_t
kmt_numarg(const mdb_arg_t * arg)2537aec1d6eScindi kmt_numarg(const mdb_arg_t *arg)
2547aec1d6eScindi {
2557aec1d6eScindi if (arg->a_type == MDB_TYPE_STRING)
2567aec1d6eScindi return (mdb_strtoull(arg->a_un.a_str));
2577aec1d6eScindi else
2587aec1d6eScindi return (arg->a_un.a_val);
2597aec1d6eScindi }
2607aec1d6eScindi
2617c478bd9Sstevel@tonic-gate /*ARGSUSED1*/
2627c478bd9Sstevel@tonic-gate int
kmt_out_dcmd(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)2637c478bd9Sstevel@tonic-gate kmt_out_dcmd(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2647c478bd9Sstevel@tonic-gate {
2657c478bd9Sstevel@tonic-gate uint64_t len = 0;
2667c478bd9Sstevel@tonic-gate uint64_t val;
2677c478bd9Sstevel@tonic-gate
2687c478bd9Sstevel@tonic-gate if (mdb_getopts(argc, argv,
2697c478bd9Sstevel@tonic-gate 'L', MDB_OPT_UINT64, &len,
2707c478bd9Sstevel@tonic-gate NULL) != argc - 1)
2717c478bd9Sstevel@tonic-gate return (DCMD_USAGE);
2727c478bd9Sstevel@tonic-gate
2737c478bd9Sstevel@tonic-gate if (len == 0)
2747c478bd9Sstevel@tonic-gate len = mdb.m_dcount;
2757c478bd9Sstevel@tonic-gate
2767c478bd9Sstevel@tonic-gate argv += argc - 1;
2777aec1d6eScindi val = kmt_numarg(argv);
2787c478bd9Sstevel@tonic-gate
2797c478bd9Sstevel@tonic-gate if (kmt_io_check(len, addr, IOCHECK_WARN) < 0)
2807c478bd9Sstevel@tonic-gate return (DCMD_ERR);
2817c478bd9Sstevel@tonic-gate
2827c478bd9Sstevel@tonic-gate if (val > (1ULL << (len * NBBY)) - 1) {
2837c478bd9Sstevel@tonic-gate warn("value is out of range for port size\n");
2847c478bd9Sstevel@tonic-gate return (DCMD_ERR);
2857c478bd9Sstevel@tonic-gate }
2867c478bd9Sstevel@tonic-gate
2877c478bd9Sstevel@tonic-gate if (mdb_tgt_iowrite(mdb.m_target, &val, len, addr) < 0) {
2887c478bd9Sstevel@tonic-gate warn("failed to write to port %llx", (u_longlong_t)addr);
2897c478bd9Sstevel@tonic-gate return (DCMD_ERR);
2907c478bd9Sstevel@tonic-gate }
2917c478bd9Sstevel@tonic-gate
2927c478bd9Sstevel@tonic-gate return (DCMD_OK);
2937c478bd9Sstevel@tonic-gate }
2947c478bd9Sstevel@tonic-gate
2957c478bd9Sstevel@tonic-gate static int
kmt_rwmsr(uint32_t addr,uint64_t * valp,void (* rw)(uint32_t,uint64_t *))2967c478bd9Sstevel@tonic-gate kmt_rwmsr(uint32_t addr, uint64_t *valp, void (*rw)(uint32_t, uint64_t *))
2977c478bd9Sstevel@tonic-gate {
2987c478bd9Sstevel@tonic-gate jmp_buf pcb, *oldpcb = NULL;
2997c478bd9Sstevel@tonic-gate
3007c478bd9Sstevel@tonic-gate if (setjmp(pcb) != 0) {
3017c478bd9Sstevel@tonic-gate kmdb_dpi_restore_fault_hdlr(oldpcb);
3027c478bd9Sstevel@tonic-gate return (-1); /* errno is set for us */
3037c478bd9Sstevel@tonic-gate }
3047c478bd9Sstevel@tonic-gate
3057c478bd9Sstevel@tonic-gate oldpcb = kmdb_dpi_set_fault_hdlr(&pcb);
3067c478bd9Sstevel@tonic-gate rw(addr, valp);
3077c478bd9Sstevel@tonic-gate kmdb_dpi_restore_fault_hdlr(oldpcb);
3087c478bd9Sstevel@tonic-gate
3097c478bd9Sstevel@tonic-gate return (0);
3107c478bd9Sstevel@tonic-gate }
3117c478bd9Sstevel@tonic-gate
3127c478bd9Sstevel@tonic-gate /*ARGSUSED*/
3137c478bd9Sstevel@tonic-gate int
kmt_rdmsr(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)3147c478bd9Sstevel@tonic-gate kmt_rdmsr(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3157c478bd9Sstevel@tonic-gate {
3167c478bd9Sstevel@tonic-gate uint64_t val;
3177c478bd9Sstevel@tonic-gate
3187c478bd9Sstevel@tonic-gate if (!(flags & DCMD_ADDRSPEC))
3197c478bd9Sstevel@tonic-gate return (DCMD_USAGE);
3207c478bd9Sstevel@tonic-gate
3217c478bd9Sstevel@tonic-gate if (kmt_rwmsr(addr, &val, rdmsr) < 0) {
3227c478bd9Sstevel@tonic-gate warn("rdmsr failed");
3237c478bd9Sstevel@tonic-gate return (DCMD_ERR);
3247c478bd9Sstevel@tonic-gate }
3257c478bd9Sstevel@tonic-gate
3267c478bd9Sstevel@tonic-gate mdb_printf("%llx\n", (u_longlong_t)val);
3277c478bd9Sstevel@tonic-gate
3287c478bd9Sstevel@tonic-gate return (DCMD_OK);
3297c478bd9Sstevel@tonic-gate }
3307c478bd9Sstevel@tonic-gate
3317c478bd9Sstevel@tonic-gate /*ARGSUSED*/
3327c478bd9Sstevel@tonic-gate int
kmt_wrmsr(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)3337c478bd9Sstevel@tonic-gate kmt_wrmsr(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
3347c478bd9Sstevel@tonic-gate {
3357c478bd9Sstevel@tonic-gate uint64_t val;
3367c478bd9Sstevel@tonic-gate
3377c478bd9Sstevel@tonic-gate if (!(flags & DCMD_ADDRSPEC) || argc != 1)
3387c478bd9Sstevel@tonic-gate return (DCMD_USAGE);
3397c478bd9Sstevel@tonic-gate
3407aec1d6eScindi val = kmt_numarg(argv);
3417c478bd9Sstevel@tonic-gate
3427c478bd9Sstevel@tonic-gate if (kmt_rwmsr(addr, &val, wrmsr)) {
3437c478bd9Sstevel@tonic-gate warn("wrmsr failed");
3447c478bd9Sstevel@tonic-gate return (DCMD_ERR);
3457c478bd9Sstevel@tonic-gate }
3467c478bd9Sstevel@tonic-gate
3477c478bd9Sstevel@tonic-gate return (DCMD_OK);
3487c478bd9Sstevel@tonic-gate }
3497c478bd9Sstevel@tonic-gate
3507c478bd9Sstevel@tonic-gate /*ARGSUSED*/
3517c478bd9Sstevel@tonic-gate ssize_t
kmt_write(mdb_tgt_t * t,const void * buf,size_t nbytes,uintptr_t addr)3527c478bd9Sstevel@tonic-gate kmt_write(mdb_tgt_t *t, const void *buf, size_t nbytes, uintptr_t addr)
3537c478bd9Sstevel@tonic-gate {
3547c478bd9Sstevel@tonic-gate if (!(t->t_flags & MDB_TGT_F_ALLOWIO) &&
3557c478bd9Sstevel@tonic-gate (nbytes = kmdb_kdi_range_is_nontoxic(addr, nbytes, 1)) == 0)
3567c478bd9Sstevel@tonic-gate return (set_errno(EMDB_NOMAP));
3577c478bd9Sstevel@tonic-gate
358f18fc278Sjohnlev /*
359f18fc278Sjohnlev * No writes to user space are allowed. If we were to allow it, we'd
360f18fc278Sjohnlev * be in the unfortunate situation where kmdb could place a breakpoint
361f18fc278Sjohnlev * on a userspace executable page; this dirty page would end up being
362f18fc278Sjohnlev * flushed back to disk, incurring sadness when it's next executed.
363f18fc278Sjohnlev * Besides, we can't allow trapping in from userspace anyway.
364f18fc278Sjohnlev */
365f18fc278Sjohnlev if (addr < kmdb_kdi_get_userlimit())
366f18fc278Sjohnlev return (set_errno(EMDB_TGTNOTSUP));
367f18fc278Sjohnlev
3687c478bd9Sstevel@tonic-gate return (kmt_rw(t, (void *)buf, nbytes, addr, kmt_writer));
3697c478bd9Sstevel@tonic-gate }
3707c478bd9Sstevel@tonic-gate
3717c478bd9Sstevel@tonic-gate /*ARGSUSED*/
3727c478bd9Sstevel@tonic-gate static ssize_t
kmt_iorw(mdb_tgt_t * t,void * buf,size_t nbytes,uint64_t addr,void (* iorw)(void *,size_t,uintptr_t))3737c478bd9Sstevel@tonic-gate kmt_iorw(mdb_tgt_t *t, void *buf, size_t nbytes, uint64_t addr,
3747c478bd9Sstevel@tonic-gate void (*iorw)(void *, size_t, uintptr_t))
3757c478bd9Sstevel@tonic-gate {
3767c478bd9Sstevel@tonic-gate jmp_buf pcb, *oldpcb = NULL;
3777c478bd9Sstevel@tonic-gate
3787c478bd9Sstevel@tonic-gate if (kmt_io_check(nbytes, addr, IOCHECK_NOWARN) < 0)
3797c478bd9Sstevel@tonic-gate return (-1); /* errno is set for us */
3807c478bd9Sstevel@tonic-gate
3817c478bd9Sstevel@tonic-gate if (setjmp(pcb) != 0) {
3827c478bd9Sstevel@tonic-gate kmdb_dpi_restore_fault_hdlr(oldpcb);
3837c478bd9Sstevel@tonic-gate return (-1); /* errno is set for us */
3847c478bd9Sstevel@tonic-gate }
3857c478bd9Sstevel@tonic-gate
3867c478bd9Sstevel@tonic-gate oldpcb = kmdb_dpi_set_fault_hdlr(&pcb);
3877c478bd9Sstevel@tonic-gate iorw(buf, nbytes, addr);
3887c478bd9Sstevel@tonic-gate kmdb_dpi_restore_fault_hdlr(oldpcb);
3897c478bd9Sstevel@tonic-gate
3907c478bd9Sstevel@tonic-gate return (nbytes);
3917c478bd9Sstevel@tonic-gate }
3927c478bd9Sstevel@tonic-gate
3937c478bd9Sstevel@tonic-gate /*ARGSUSED*/
3947c478bd9Sstevel@tonic-gate ssize_t
kmt_ioread(mdb_tgt_t * t,void * buf,size_t nbytes,uintptr_t addr)3957c478bd9Sstevel@tonic-gate kmt_ioread(mdb_tgt_t *t, void *buf, size_t nbytes, uintptr_t addr)
3967c478bd9Sstevel@tonic-gate {
3977c478bd9Sstevel@tonic-gate return (kmt_iorw(t, buf, nbytes, addr, kmt_in));
3987c478bd9Sstevel@tonic-gate }
3997c478bd9Sstevel@tonic-gate
4007c478bd9Sstevel@tonic-gate /*ARGSUSED*/
4017c478bd9Sstevel@tonic-gate ssize_t
kmt_iowrite(mdb_tgt_t * t,const void * buf,size_t nbytes,uintptr_t addr)4027c478bd9Sstevel@tonic-gate kmt_iowrite(mdb_tgt_t *t, const void *buf, size_t nbytes, uintptr_t addr)
4037c478bd9Sstevel@tonic-gate {
4047c478bd9Sstevel@tonic-gate return (kmt_iorw(t, (void *)buf, nbytes, addr, kmt_out));
4057c478bd9Sstevel@tonic-gate }
4067c478bd9Sstevel@tonic-gate
4077aec1d6eScindi static int
kmt_pcicfg_common(uintptr_t off,uint32_t * valp,const mdb_arg_t * argv,void (* rw)(void *,size_t,uintptr_t))4087aec1d6eScindi kmt_pcicfg_common(uintptr_t off, uint32_t *valp, const mdb_arg_t *argv,
4097aec1d6eScindi void (*rw)(void *, size_t, uintptr_t))
4107aec1d6eScindi {
4117aec1d6eScindi uint32_t bus, dev, func;
4127aec1d6eScindi uint32_t addr;
4137aec1d6eScindi
4147aec1d6eScindi bus = kmt_numarg(&argv[0]);
4157aec1d6eScindi dev = kmt_numarg(&argv[1]);
4167aec1d6eScindi func = kmt_numarg(&argv[2]);
4177aec1d6eScindi
4187aec1d6eScindi if ((bus & 0xffff) != bus) {
4197aec1d6eScindi warn("invalid bus number (must be 0-0xffff)\n");
4207aec1d6eScindi return (DCMD_ERR);
4217aec1d6eScindi }
4227aec1d6eScindi
4237aec1d6eScindi if ((dev & 0x1f) != dev) {
4247aec1d6eScindi warn("invalid device number (must be 0-0x1f)\n");
4257aec1d6eScindi return (DCMD_ERR);
4267aec1d6eScindi }
4277aec1d6eScindi
4287aec1d6eScindi if ((func & 0x7) != func) {
4297aec1d6eScindi warn("invalid function number (must be 0-7)\n");
4307aec1d6eScindi return (DCMD_ERR);
4317aec1d6eScindi }
4327aec1d6eScindi
4337aec1d6eScindi if ((off & 0xfc) != off) {
4347aec1d6eScindi warn("invalid register number (must be 0-0xff, and 4-byte "
4357aec1d6eScindi "aligned\n");
4367aec1d6eScindi return (DCMD_ERR);
4377aec1d6eScindi }
4387aec1d6eScindi
4397aec1d6eScindi addr = PCI_CADDR1(bus, dev, func, off);
4407aec1d6eScindi
4417aec1d6eScindi if (kmt_iowrite(mdb.m_target, &addr, sizeof (addr), PCI_CONFADD) !=
4427aec1d6eScindi sizeof (addr)) {
4437aec1d6eScindi warn("write of PCI_CONFADD failed");
4447aec1d6eScindi return (DCMD_ERR);
4457aec1d6eScindi }
4467aec1d6eScindi
4477aec1d6eScindi if (kmt_iorw(mdb.m_target, valp, sizeof (*valp), PCI_CONFDATA, rw) !=
4487aec1d6eScindi sizeof (*valp)) {
4497aec1d6eScindi warn("access to PCI_CONFDATA failed");
4507aec1d6eScindi return (DCMD_ERR);
4517aec1d6eScindi }
4527aec1d6eScindi
4537aec1d6eScindi return (DCMD_OK);
4547aec1d6eScindi }
4557aec1d6eScindi
4567aec1d6eScindi /*ARGSUSED*/
4577aec1d6eScindi int
kmt_rdpcicfg(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)4587aec1d6eScindi kmt_rdpcicfg(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
4597aec1d6eScindi {
4607aec1d6eScindi uint32_t val;
4617aec1d6eScindi
4627aec1d6eScindi if (argc != 3 || !(flags & DCMD_ADDRSPEC))
4637aec1d6eScindi return (DCMD_USAGE);
4647aec1d6eScindi
4657aec1d6eScindi if (kmt_pcicfg_common(addr, &val, argv, kmt_in) != DCMD_OK)
4667aec1d6eScindi return (DCMD_ERR);
4677aec1d6eScindi
4687aec1d6eScindi mdb_printf("%llx\n", (u_longlong_t)val);
4697aec1d6eScindi
4707aec1d6eScindi return (DCMD_OK);
4717aec1d6eScindi }
4727aec1d6eScindi
4737aec1d6eScindi /*ARGSUSED*/
4747aec1d6eScindi int
kmt_wrpcicfg(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)4757aec1d6eScindi kmt_wrpcicfg(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
4767aec1d6eScindi {
4777aec1d6eScindi uint32_t val;
4787aec1d6eScindi
4797aec1d6eScindi if (argc != 4 || !(flags & DCMD_ADDRSPEC))
4807aec1d6eScindi return (DCMD_USAGE);
4817aec1d6eScindi
4827aec1d6eScindi val = (uint32_t)kmt_numarg(&argv[3]);
4837aec1d6eScindi
4847aec1d6eScindi if (kmt_pcicfg_common(addr, &val, argv, kmt_out) != DCMD_OK)
4857aec1d6eScindi return (DCMD_ERR);
4867aec1d6eScindi
4877aec1d6eScindi return (DCMD_OK);
4887aec1d6eScindi }
4897aec1d6eScindi
4907c478bd9Sstevel@tonic-gate const char *
kmt_trapname(int trapnum)4917c478bd9Sstevel@tonic-gate kmt_trapname(int trapnum)
4927c478bd9Sstevel@tonic-gate {
4937c478bd9Sstevel@tonic-gate static char trapname[11];
4947c478bd9Sstevel@tonic-gate
4957c478bd9Sstevel@tonic-gate switch (trapnum) {
4967c478bd9Sstevel@tonic-gate case T_ZERODIV:
4977c478bd9Sstevel@tonic-gate return ("division by zero (#de) trap");
4987c478bd9Sstevel@tonic-gate case T_SGLSTP:
4997c478bd9Sstevel@tonic-gate return ("single-step (#db) trap");
5007c478bd9Sstevel@tonic-gate case T_NMIFLT:
5017c478bd9Sstevel@tonic-gate return ("NMI");
5027c478bd9Sstevel@tonic-gate case T_BPTFLT:
5037c478bd9Sstevel@tonic-gate return ("breakpoint (#bp) trap");
5047c478bd9Sstevel@tonic-gate case T_ILLINST:
5057c478bd9Sstevel@tonic-gate return ("illegal instruction (#ud) trap");
5067c478bd9Sstevel@tonic-gate case T_SEGFLT:
5077c478bd9Sstevel@tonic-gate return ("segment not present (#np) trap");
5087c478bd9Sstevel@tonic-gate case T_STKFLT:
5097c478bd9Sstevel@tonic-gate return ("stack (#ss) trap");
5107c478bd9Sstevel@tonic-gate case T_GPFLT:
5117c478bd9Sstevel@tonic-gate return ("general protection (#gp) trap");
5127c478bd9Sstevel@tonic-gate case T_PGFLT:
5137c478bd9Sstevel@tonic-gate return ("page fault (#pf) trap");
5147c478bd9Sstevel@tonic-gate case T_ALIGNMENT:
5157c478bd9Sstevel@tonic-gate return ("alignment check (#ac) trap");
5167c478bd9Sstevel@tonic-gate case T_MCE:
5177c478bd9Sstevel@tonic-gate return ("machine check (#mc) trap");
5187c478bd9Sstevel@tonic-gate case T_SIMDFPE:
5197c478bd9Sstevel@tonic-gate return ("SSE/SSE2 (#xm) trap");
5207c478bd9Sstevel@tonic-gate case T_DBGENTR:
5217c478bd9Sstevel@tonic-gate return ("debugger entry trap");
5227c478bd9Sstevel@tonic-gate default:
5237c478bd9Sstevel@tonic-gate (void) mdb_snprintf(trapname, sizeof (trapname), "trap %#x",
5247c478bd9Sstevel@tonic-gate trapnum);
5257c478bd9Sstevel@tonic-gate return (trapname);
5267c478bd9Sstevel@tonic-gate }
5277c478bd9Sstevel@tonic-gate }
5287c478bd9Sstevel@tonic-gate
5297c478bd9Sstevel@tonic-gate void
kmt_init_isadep(mdb_tgt_t * t)5307c478bd9Sstevel@tonic-gate kmt_init_isadep(mdb_tgt_t *t)
5317c478bd9Sstevel@tonic-gate {
5327c478bd9Sstevel@tonic-gate kmt_data_t *kmt = t->t_data;
5337c478bd9Sstevel@tonic-gate
5347c478bd9Sstevel@tonic-gate kmt->kmt_rds = mdb_isa_kregs;
5357c478bd9Sstevel@tonic-gate
5367c478bd9Sstevel@tonic-gate kmt->kmt_trapmax = KMT_MAXTRAPNO;
5377c478bd9Sstevel@tonic-gate kmt->kmt_trapmap = mdb_zalloc(BT_SIZEOFMAP(kmt->kmt_trapmax), UM_SLEEP);
5387c478bd9Sstevel@tonic-gate
5397c478bd9Sstevel@tonic-gate /* Traps for which we want to provide an explicit message */
5407c478bd9Sstevel@tonic-gate (void) mdb_tgt_add_fault(t, T_ZERODIV, MDB_TGT_SPEC_INTERNAL,
5417c478bd9Sstevel@tonic-gate no_se_f, NULL);
5427c478bd9Sstevel@tonic-gate (void) mdb_tgt_add_fault(t, T_ILLINST, MDB_TGT_SPEC_INTERNAL,
5437c478bd9Sstevel@tonic-gate no_se_f, NULL);
5447c478bd9Sstevel@tonic-gate (void) mdb_tgt_add_fault(t, T_SEGFLT, MDB_TGT_SPEC_INTERNAL,
5457c478bd9Sstevel@tonic-gate no_se_f, NULL);
5467c478bd9Sstevel@tonic-gate (void) mdb_tgt_add_fault(t, T_STKFLT, MDB_TGT_SPEC_INTERNAL,
5477c478bd9Sstevel@tonic-gate no_se_f, NULL);
5487c478bd9Sstevel@tonic-gate (void) mdb_tgt_add_fault(t, T_GPFLT, MDB_TGT_SPEC_INTERNAL,
5497c478bd9Sstevel@tonic-gate no_se_f, NULL);
5507c478bd9Sstevel@tonic-gate (void) mdb_tgt_add_fault(t, T_PGFLT, MDB_TGT_SPEC_INTERNAL,
5517c478bd9Sstevel@tonic-gate no_se_f, NULL);
5527c478bd9Sstevel@tonic-gate (void) mdb_tgt_add_fault(t, T_ALIGNMENT, MDB_TGT_SPEC_INTERNAL,
5537c478bd9Sstevel@tonic-gate no_se_f, NULL);
5547c478bd9Sstevel@tonic-gate (void) mdb_tgt_add_fault(t, T_MCE, MDB_TGT_SPEC_INTERNAL,
5557c478bd9Sstevel@tonic-gate no_se_f, NULL);
5567c478bd9Sstevel@tonic-gate (void) mdb_tgt_add_fault(t, T_SIMDFPE, MDB_TGT_SPEC_INTERNAL,
5577c478bd9Sstevel@tonic-gate no_se_f, NULL);
5587c478bd9Sstevel@tonic-gate
5597c478bd9Sstevel@tonic-gate /*
5607c478bd9Sstevel@tonic-gate * Traps which will be handled elsewhere, and which therefore don't
5617c478bd9Sstevel@tonic-gate * need the trap-based message.
5627c478bd9Sstevel@tonic-gate */
5637c478bd9Sstevel@tonic-gate BT_SET(kmt->kmt_trapmap, T_SGLSTP);
5647c478bd9Sstevel@tonic-gate BT_SET(kmt->kmt_trapmap, T_BPTFLT);
5657c478bd9Sstevel@tonic-gate BT_SET(kmt->kmt_trapmap, T_DBGENTR);
5667c478bd9Sstevel@tonic-gate
5677c478bd9Sstevel@tonic-gate /* Catch-all for traps not explicitly listed here */
5687c478bd9Sstevel@tonic-gate (void) mdb_tgt_add_fault(t, KMT_TRAP_NOTENUM, MDB_TGT_SPEC_INTERNAL,
5697c478bd9Sstevel@tonic-gate no_se_f, NULL);
5707c478bd9Sstevel@tonic-gate }
5717c478bd9Sstevel@tonic-gate
5727c478bd9Sstevel@tonic-gate void
kmt_startup_isadep(mdb_tgt_t * t)5737c478bd9Sstevel@tonic-gate kmt_startup_isadep(mdb_tgt_t *t)
5747c478bd9Sstevel@tonic-gate {
5757c478bd9Sstevel@tonic-gate kmt_data_t *kmt = t->t_data;
5767c478bd9Sstevel@tonic-gate
5777c478bd9Sstevel@tonic-gate /*
5787c478bd9Sstevel@tonic-gate * The stack trace and ::step out code need to detect "interrupt"
5797c478bd9Sstevel@tonic-gate * frames. The heuristic they use to detect said frames requires the
5807c478bd9Sstevel@tonic-gate * addresses of routines that can generate them.
5817c478bd9Sstevel@tonic-gate */
5827c478bd9Sstevel@tonic-gate (void) mdb_tgt_lookup_by_name(t, MDB_TGT_OBJ_EXEC,
5837c478bd9Sstevel@tonic-gate "cmnint", &kmt->kmt_intrsyms._kmt_cmnint, NULL);
5847c478bd9Sstevel@tonic-gate (void) mdb_tgt_lookup_by_name(t, MDB_TGT_OBJ_EXEC,
5857c478bd9Sstevel@tonic-gate "cmntrap", &kmt->kmt_intrsyms._kmt_cmntrap, NULL);
5867c478bd9Sstevel@tonic-gate (void) mdb_tgt_lookup_by_name(t, MDB_TGT_OBJ_EXEC,
5877c478bd9Sstevel@tonic-gate "sys_sysenter", &kmt->kmt_intrsyms._kmt_sysenter, NULL);
5889acbbeafSnn (void) mdb_tgt_lookup_by_name(t, MDB_TGT_OBJ_EXEC,
5899acbbeafSnn "brand_sys_sysenter", &kmt->kmt_intrsyms._kmt_brand_sysenter, NULL);
5907c478bd9Sstevel@tonic-gate #if defined(__amd64)
5917c478bd9Sstevel@tonic-gate (void) mdb_tgt_lookup_by_name(t, MDB_TGT_OBJ_EXEC,
5927c478bd9Sstevel@tonic-gate "sys_syscall", &kmt->kmt_intrsyms._kmt_syscall, NULL);
5939acbbeafSnn (void) mdb_tgt_lookup_by_name(t, MDB_TGT_OBJ_EXEC,
5949acbbeafSnn "brand_sys_syscall", &kmt->kmt_intrsyms._kmt_brand_syscall, NULL);
5957c478bd9Sstevel@tonic-gate #endif
5967c478bd9Sstevel@tonic-gate }
597