1f95a0250SRodney W. Grimes /*- 2f95a0250SRodney W. Grimes * Copyright (c) 1989, 1992, 1993 3f95a0250SRodney W. Grimes * The Regents of the University of California. All rights reserved. 4f95a0250SRodney W. Grimes * 5f95a0250SRodney W. Grimes * This code is derived from software developed by the Computer Systems 6f95a0250SRodney W. Grimes * Engineering group at Lawrence Berkeley Laboratory under DARPA contract 7f95a0250SRodney W. Grimes * BG 91-66 and contributed to Berkeley. 8f95a0250SRodney W. Grimes * 9f95a0250SRodney W. Grimes * Redistribution and use in source and binary forms, with or without 10f95a0250SRodney W. Grimes * modification, are permitted provided that the following conditions 11f95a0250SRodney W. Grimes * are met: 12f95a0250SRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 13f95a0250SRodney W. Grimes * notice, this list of conditions and the following disclaimer. 14f95a0250SRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 15f95a0250SRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 16f95a0250SRodney W. Grimes * documentation and/or other materials provided with the distribution. 17f95a0250SRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 18f95a0250SRodney W. Grimes * may be used to endorse or promote products derived from this software 19f95a0250SRodney W. Grimes * without specific prior written permission. 20f95a0250SRodney W. Grimes * 21f95a0250SRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22f95a0250SRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23f95a0250SRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24f95a0250SRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25f95a0250SRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26f95a0250SRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27f95a0250SRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28f95a0250SRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29f95a0250SRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30f95a0250SRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31f95a0250SRodney W. Grimes * SUCH DAMAGE. 32f95a0250SRodney W. Grimes */ 33f95a0250SRodney W. Grimes 34e67f5b9fSMatthew Dillon #include <sys/cdefs.h> 35e67f5b9fSMatthew Dillon __FBSDID("$FreeBSD$"); 36e67f5b9fSMatthew Dillon 37f95a0250SRodney W. Grimes #if defined(LIBC_SCCS) && !defined(lint) 38c4a7cdb3SPeter Wemm #if 0 39f95a0250SRodney W. Grimes static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93"; 40c4a7cdb3SPeter Wemm #endif 41f95a0250SRodney W. Grimes #endif /* LIBC_SCCS and not lint */ 42f95a0250SRodney W. Grimes 43f95a0250SRodney W. Grimes /* 44a1de871dSPeter Wemm * AMD64 machine dependent routines for kvm. Hopefully, the forthcoming 45f95a0250SRodney W. Grimes * vm code will one day obsolete this module. 46f95a0250SRodney W. Grimes */ 47f95a0250SRodney W. Grimes 48f95a0250SRodney W. Grimes #include <sys/param.h> 49f95a0250SRodney W. Grimes #include <sys/user.h> 50f95a0250SRodney W. Grimes #include <sys/proc.h> 51f95a0250SRodney W. Grimes #include <sys/stat.h> 52e55a0cd8SPeter Wemm #include <sys/mman.h> 5351295a4dSJordan K. Hubbard #include <stdlib.h> 54953e4134SEd Schouten #include <string.h> 55f95a0250SRodney W. Grimes #include <unistd.h> 56f95a0250SRodney W. Grimes #include <nlist.h> 57f95a0250SRodney W. Grimes #include <kvm.h> 58f95a0250SRodney W. Grimes 59f95a0250SRodney W. Grimes #include <vm/vm.h> 60f95a0250SRodney W. Grimes #include <vm/vm_param.h> 61f95a0250SRodney W. Grimes 62e55a0cd8SPeter Wemm #include <machine/elf.h> 63e55a0cd8SPeter Wemm 64f95a0250SRodney W. Grimes #include <limits.h> 65f95a0250SRodney W. Grimes 66f95a0250SRodney W. Grimes #include "kvm_private.h" 67f95a0250SRodney W. Grimes 68f95a0250SRodney W. Grimes #ifndef btop 69a1de871dSPeter Wemm #define btop(x) (amd64_btop(x)) 70a1de871dSPeter Wemm #define ptob(x) (amd64_ptob(x)) 71f95a0250SRodney W. Grimes #endif 72f95a0250SRodney W. Grimes 73e9ca6fe4SPeter Wemm /* minidump must be the first item! */ 74f95a0250SRodney W. Grimes struct vmstate { 75e9ca6fe4SPeter Wemm int minidump; /* 1 = minidump mode */ 76e55a0cd8SPeter Wemm void *mmapbase; 77e55a0cd8SPeter Wemm size_t mmapsize; 78f2b29125SPeter Wemm pml4_entry_t *PML4; 79f95a0250SRodney W. Grimes }; 80f95a0250SRodney W. Grimes 81e55a0cd8SPeter Wemm /* 82e55a0cd8SPeter Wemm * Map the ELF headers into the process' address space. We do this in two 83e55a0cd8SPeter Wemm * steps: first the ELF header itself and using that information the whole 84e55a0cd8SPeter Wemm * set of headers. (Taken from kvm_ia64.c) 85e55a0cd8SPeter Wemm */ 86e55a0cd8SPeter Wemm static int 87e55a0cd8SPeter Wemm _kvm_maphdrs(kvm_t *kd, size_t sz) 88e55a0cd8SPeter Wemm { 89e55a0cd8SPeter Wemm struct vmstate *vm = kd->vmst; 90e55a0cd8SPeter Wemm 91e55a0cd8SPeter Wemm /* munmap() previous mmap(). */ 92e55a0cd8SPeter Wemm if (vm->mmapbase != NULL) { 93e55a0cd8SPeter Wemm munmap(vm->mmapbase, vm->mmapsize); 94e55a0cd8SPeter Wemm vm->mmapbase = NULL; 95e55a0cd8SPeter Wemm } 96e55a0cd8SPeter Wemm 97e55a0cd8SPeter Wemm vm->mmapsize = sz; 98e55a0cd8SPeter Wemm vm->mmapbase = mmap(NULL, sz, PROT_READ, MAP_PRIVATE, kd->pmfd, 0); 99e55a0cd8SPeter Wemm if (vm->mmapbase == MAP_FAILED) { 100e55a0cd8SPeter Wemm _kvm_err(kd, kd->program, "cannot mmap corefile"); 101e55a0cd8SPeter Wemm return (-1); 102e55a0cd8SPeter Wemm } 103e55a0cd8SPeter Wemm return (0); 104e55a0cd8SPeter Wemm } 105e55a0cd8SPeter Wemm 106e55a0cd8SPeter Wemm /* 107e55a0cd8SPeter Wemm * Translate a physical memory address to a file-offset in the crash-dump. 108e55a0cd8SPeter Wemm * (Taken from kvm_ia64.c) 109e55a0cd8SPeter Wemm */ 110e55a0cd8SPeter Wemm static size_t 111e55a0cd8SPeter Wemm _kvm_pa2off(kvm_t *kd, uint64_t pa, off_t *ofs) 112e55a0cd8SPeter Wemm { 113e55a0cd8SPeter Wemm Elf_Ehdr *e = kd->vmst->mmapbase; 114d7dc9f76SHidetoshi Shimokawa Elf_Phdr *p; 115d7dc9f76SHidetoshi Shimokawa int n; 116e55a0cd8SPeter Wemm 117d7dc9f76SHidetoshi Shimokawa if (kd->rawdump) { 118d7dc9f76SHidetoshi Shimokawa *ofs = pa; 119d7dc9f76SHidetoshi Shimokawa return (PAGE_SIZE - ((size_t)pa & PAGE_MASK)); 120d7dc9f76SHidetoshi Shimokawa } 121d7dc9f76SHidetoshi Shimokawa 122d7dc9f76SHidetoshi Shimokawa p = (Elf_Phdr*)((char*)e + e->e_phoff); 123d7dc9f76SHidetoshi Shimokawa n = e->e_phnum; 124e55a0cd8SPeter Wemm while (n && (pa < p->p_paddr || pa >= p->p_paddr + p->p_memsz)) 125e55a0cd8SPeter Wemm p++, n--; 126e55a0cd8SPeter Wemm if (n == 0) 127e55a0cd8SPeter Wemm return (0); 128e55a0cd8SPeter Wemm *ofs = (pa - p->p_paddr) + p->p_offset; 129e55a0cd8SPeter Wemm return (PAGE_SIZE - ((size_t)pa & PAGE_MASK)); 130e55a0cd8SPeter Wemm } 131e55a0cd8SPeter Wemm 132f95a0250SRodney W. Grimes void 1332f85bf6eSPeter Wemm _kvm_freevtop(kvm_t *kd) 1342f85bf6eSPeter Wemm { 135e55a0cd8SPeter Wemm struct vmstate *vm = kd->vmst; 136e55a0cd8SPeter Wemm 137e9ca6fe4SPeter Wemm if (kd->vmst->minidump) 138e9ca6fe4SPeter Wemm return (_kvm_minidump_freevtop(kd)); 139e55a0cd8SPeter Wemm if (vm->mmapbase != NULL) 140e55a0cd8SPeter Wemm munmap(vm->mmapbase, vm->mmapsize); 141e55a0cd8SPeter Wemm if (vm->PML4) 142e55a0cd8SPeter Wemm free(vm->PML4); 143e55a0cd8SPeter Wemm free(vm); 144e55a0cd8SPeter Wemm kd->vmst = NULL; 14521d54b07SRodney W. Grimes } 146f95a0250SRodney W. Grimes 147f95a0250SRodney W. Grimes int 1482f85bf6eSPeter Wemm _kvm_initvtop(kvm_t *kd) 1492f85bf6eSPeter Wemm { 150*c10970ddSUlrich Spörlein struct nlist nl[2]; 1512f85bf6eSPeter Wemm u_long pa; 152f85f3040SPeter Wemm u_long kernbase; 153f2b29125SPeter Wemm pml4_entry_t *PML4; 154e55a0cd8SPeter Wemm Elf_Ehdr *ehdr; 155e55a0cd8SPeter Wemm size_t hdrsz; 156e9ca6fe4SPeter Wemm char minihdr[8]; 157e9ca6fe4SPeter Wemm 158d7dc9f76SHidetoshi Shimokawa if (!kd->rawdump && pread(kd->pmfd, &minihdr, 8, 0) == 8) 159e9ca6fe4SPeter Wemm if (memcmp(&minihdr, "minidump", 8) == 0) 160e9ca6fe4SPeter Wemm return (_kvm_minidump_initvtop(kd)); 161f95a0250SRodney W. Grimes 162e55a0cd8SPeter Wemm kd->vmst = (struct vmstate *)_kvm_malloc(kd, sizeof(*kd->vmst)); 163e55a0cd8SPeter Wemm if (kd->vmst == 0) { 16421d54b07SRodney W. Grimes _kvm_err(kd, kd->program, "cannot allocate vm"); 165f95a0250SRodney W. Grimes return (-1); 16621d54b07SRodney W. Grimes } 167e55a0cd8SPeter Wemm kd->vmst->PML4 = 0; 168e55a0cd8SPeter Wemm 169d7dc9f76SHidetoshi Shimokawa if (kd->rawdump == 0) { 170e55a0cd8SPeter Wemm if (_kvm_maphdrs(kd, sizeof(Elf_Ehdr)) == -1) 171e55a0cd8SPeter Wemm return (-1); 172e55a0cd8SPeter Wemm 173e55a0cd8SPeter Wemm ehdr = kd->vmst->mmapbase; 174e55a0cd8SPeter Wemm hdrsz = ehdr->e_phoff + ehdr->e_phentsize * ehdr->e_phnum; 175e55a0cd8SPeter Wemm if (_kvm_maphdrs(kd, hdrsz) == -1) 176e55a0cd8SPeter Wemm return (-1); 177d7dc9f76SHidetoshi Shimokawa } 178f95a0250SRodney W. Grimes 179*c10970ddSUlrich Spörlein nl[0].n_name = "kernbase"; 180*c10970ddSUlrich Spörlein nl[1].n_name = 0; 181f85f3040SPeter Wemm 182*c10970ddSUlrich Spörlein if (kvm_nlist(kd, nl) != 0) { 183f2b29125SPeter Wemm _kvm_err(kd, kd->program, "bad namelist - no kernbase"); 184f2b29125SPeter Wemm return (-1); 185f2b29125SPeter Wemm } 186*c10970ddSUlrich Spörlein kernbase = nl[0].n_value; 187f85f3040SPeter Wemm 188*c10970ddSUlrich Spörlein nl[0].n_name = "KPML4phys"; 189*c10970ddSUlrich Spörlein nl[1].n_name = 0; 190f95a0250SRodney W. Grimes 191*c10970ddSUlrich Spörlein if (kvm_nlist(kd, nl) != 0) { 192f2b29125SPeter Wemm _kvm_err(kd, kd->program, "bad namelist - no KPML4phys"); 193f95a0250SRodney W. Grimes return (-1); 194f95a0250SRodney W. Grimes } 195*c10970ddSUlrich Spörlein if (kvm_read(kd, (nl[0].n_value - kernbase), &pa, sizeof(pa)) != 196f85f3040SPeter Wemm sizeof(pa)) { 197f2b29125SPeter Wemm _kvm_err(kd, kd->program, "cannot read KPML4phys"); 198f95a0250SRodney W. Grimes return (-1); 199f95a0250SRodney W. Grimes } 200f2b29125SPeter Wemm PML4 = _kvm_malloc(kd, PAGE_SIZE); 201f2b29125SPeter Wemm if (kvm_read(kd, pa, PML4, PAGE_SIZE) != PAGE_SIZE) { 202f2b29125SPeter Wemm _kvm_err(kd, kd->program, "cannot read KPML4phys"); 203f95a0250SRodney W. Grimes return (-1); 204f95a0250SRodney W. Grimes } 205e55a0cd8SPeter Wemm kd->vmst->PML4 = PML4; 206f95a0250SRodney W. Grimes return (0); 207f95a0250SRodney W. Grimes } 208f95a0250SRodney W. Grimes 209f95a0250SRodney W. Grimes static int 210e55a0cd8SPeter Wemm _kvm_vatop(kvm_t *kd, u_long va, off_t *pa) 2112f85bf6eSPeter Wemm { 2122f85bf6eSPeter Wemm struct vmstate *vm; 2132f85bf6eSPeter Wemm u_long offset; 214f2b29125SPeter Wemm u_long pdpe_pa; 215f2b29125SPeter Wemm u_long pde_pa; 2162f85bf6eSPeter Wemm u_long pte_pa; 217f2b29125SPeter Wemm pml4_entry_t pml4e; 218f2b29125SPeter Wemm pdp_entry_t pdpe; 2192f85bf6eSPeter Wemm pd_entry_t pde; 2202f85bf6eSPeter Wemm pt_entry_t pte; 221f2b29125SPeter Wemm u_long pml4eindex; 222f2b29125SPeter Wemm u_long pdpeindex; 2232f85bf6eSPeter Wemm u_long pdeindex; 2242f85bf6eSPeter Wemm u_long pteindex; 225e55a0cd8SPeter Wemm u_long a; 226e55a0cd8SPeter Wemm off_t ofs; 227e55a0cd8SPeter Wemm size_t s; 2282f85bf6eSPeter Wemm 2292f85bf6eSPeter Wemm vm = kd->vmst; 2302f85bf6eSPeter Wemm offset = va & (PAGE_SIZE - 1); 2312f85bf6eSPeter Wemm 2322f85bf6eSPeter Wemm /* 2332f85bf6eSPeter Wemm * If we are initializing (kernel page table descriptor pointer 2342f85bf6eSPeter Wemm * not yet set) then return pa == va to avoid infinite recursion. 2352f85bf6eSPeter Wemm */ 236f2b29125SPeter Wemm if (vm->PML4 == 0) { 237e55a0cd8SPeter Wemm s = _kvm_pa2off(kd, va, pa); 238e55a0cd8SPeter Wemm if (s == 0) { 239e55a0cd8SPeter Wemm _kvm_err(kd, kd->program, 240e55a0cd8SPeter Wemm "_kvm_vatop: bootstrap data not in dump"); 241e55a0cd8SPeter Wemm goto invalid; 242e55a0cd8SPeter Wemm } else 2432f85bf6eSPeter Wemm return (PAGE_SIZE - offset); 2442f85bf6eSPeter Wemm } 2452f85bf6eSPeter Wemm 246f2b29125SPeter Wemm pml4eindex = (va >> PML4SHIFT) & (NPML4EPG - 1); 247f2b29125SPeter Wemm pml4e = vm->PML4[pml4eindex]; 248e55a0cd8SPeter Wemm if (((u_long)pml4e & PG_V) == 0) { 249e55a0cd8SPeter Wemm _kvm_err(kd, kd->program, "_kvm_vatop: pml4e not valid"); 250f2b29125SPeter Wemm goto invalid; 251e55a0cd8SPeter Wemm } 252f2b29125SPeter Wemm 253f2b29125SPeter Wemm pdpeindex = (va >> PDPSHIFT) & (NPDPEPG-1); 254e55a0cd8SPeter Wemm pdpe_pa = ((u_long)pml4e & PG_FRAME) + 255e55a0cd8SPeter Wemm (pdpeindex * sizeof(pdp_entry_t)); 256f2b29125SPeter Wemm 257e55a0cd8SPeter Wemm s = _kvm_pa2off(kd, pdpe_pa, &ofs); 258add112ffSPeter Wemm if (s < sizeof pdpe) { 259e55a0cd8SPeter Wemm _kvm_err(kd, kd->program, "_kvm_vatop: pdpe_pa not found"); 260e55a0cd8SPeter Wemm goto invalid; 261e55a0cd8SPeter Wemm } 262e55a0cd8SPeter Wemm if (lseek(kd->pmfd, ofs, 0) == -1) { 263f2b29125SPeter Wemm _kvm_syserr(kd, kd->program, "_kvm_vatop: lseek pdpe_pa"); 264f2b29125SPeter Wemm goto invalid; 265f2b29125SPeter Wemm } 266f2b29125SPeter Wemm if (read(kd->pmfd, &pdpe, sizeof pdpe) != sizeof pdpe) { 267f2b29125SPeter Wemm _kvm_syserr(kd, kd->program, "_kvm_vatop: read pdpe"); 268f2b29125SPeter Wemm goto invalid; 269f2b29125SPeter Wemm } 270e55a0cd8SPeter Wemm if (((u_long)pdpe & PG_V) == 0) { 271e55a0cd8SPeter Wemm _kvm_err(kd, kd->program, "_kvm_vatop: pdpe not valid"); 272f2b29125SPeter Wemm goto invalid; 273e55a0cd8SPeter Wemm } 274f2b29125SPeter Wemm 275f2b29125SPeter Wemm pdeindex = (va >> PDRSHIFT) & (NPDEPG-1); 276f2b29125SPeter Wemm pde_pa = ((u_long)pdpe & PG_FRAME) + (pdeindex * sizeof(pd_entry_t)); 277f2b29125SPeter Wemm 278e55a0cd8SPeter Wemm s = _kvm_pa2off(kd, pde_pa, &ofs); 279add112ffSPeter Wemm if (s < sizeof pde) { 280e55a0cd8SPeter Wemm _kvm_syserr(kd, kd->program, "_kvm_vatop: pde_pa not found"); 281e55a0cd8SPeter Wemm goto invalid; 282e55a0cd8SPeter Wemm } 283e55a0cd8SPeter Wemm if (lseek(kd->pmfd, ofs, 0) == -1) { 284e55a0cd8SPeter Wemm _kvm_err(kd, kd->program, "_kvm_vatop: lseek pde_pa"); 285f2b29125SPeter Wemm goto invalid; 286f2b29125SPeter Wemm } 287f2b29125SPeter Wemm if (read(kd->pmfd, &pde, sizeof pde) != sizeof pde) { 288f2b29125SPeter Wemm _kvm_syserr(kd, kd->program, "_kvm_vatop: read pde"); 289f2b29125SPeter Wemm goto invalid; 290f2b29125SPeter Wemm } 291e55a0cd8SPeter Wemm if (((u_long)pde & PG_V) == 0) { 292e55a0cd8SPeter Wemm _kvm_err(kd, kd->program, "_kvm_vatop: pde not valid"); 2932f85bf6eSPeter Wemm goto invalid; 294e55a0cd8SPeter Wemm } 2952f85bf6eSPeter Wemm 2964afb0d5aSTor Egge if ((u_long)pde & PG_PS) { 2974afb0d5aSTor Egge /* 298f2b29125SPeter Wemm * No final-level page table; ptd describes one 2MB page. 2994afb0d5aSTor Egge */ 300f2b29125SPeter Wemm #define PAGE2M_MASK (NBPDR - 1) 301f2b29125SPeter Wemm #define PG_FRAME2M (~PAGE2M_MASK) 302e55a0cd8SPeter Wemm a = ((u_long)pde & PG_FRAME2M) + (va & PAGE2M_MASK); 303e55a0cd8SPeter Wemm s = _kvm_pa2off(kd, a, pa); 304e55a0cd8SPeter Wemm if (s == 0) { 305e55a0cd8SPeter Wemm _kvm_err(kd, kd->program, 306e55a0cd8SPeter Wemm "_kvm_vatop: 2MB page address not in dump"); 307e55a0cd8SPeter Wemm goto invalid; 308e55a0cd8SPeter Wemm } else 309f2b29125SPeter Wemm return (NBPDR - (va & PAGE2M_MASK)); 3104afb0d5aSTor Egge } 3114afb0d5aSTor Egge 3122f85bf6eSPeter Wemm pteindex = (va >> PAGE_SHIFT) & (NPTEPG-1); 3132f85bf6eSPeter Wemm pte_pa = ((u_long)pde & PG_FRAME) + (pteindex * sizeof(pt_entry_t)); 3142f85bf6eSPeter Wemm 315e55a0cd8SPeter Wemm s = _kvm_pa2off(kd, pte_pa, &ofs); 316add112ffSPeter Wemm if (s < sizeof pte) { 317e55a0cd8SPeter Wemm _kvm_err(kd, kd->program, "_kvm_vatop: pte_pa not found"); 318e55a0cd8SPeter Wemm goto invalid; 319e55a0cd8SPeter Wemm } 320e55a0cd8SPeter Wemm if (lseek(kd->pmfd, ofs, 0) == -1) { 3212f85bf6eSPeter Wemm _kvm_syserr(kd, kd->program, "_kvm_vatop: lseek"); 3222f85bf6eSPeter Wemm goto invalid; 3232f85bf6eSPeter Wemm } 3242f85bf6eSPeter Wemm if (read(kd->pmfd, &pte, sizeof pte) != sizeof pte) { 3252f85bf6eSPeter Wemm _kvm_syserr(kd, kd->program, "_kvm_vatop: read"); 3262f85bf6eSPeter Wemm goto invalid; 3272f85bf6eSPeter Wemm } 328e55a0cd8SPeter Wemm if (((u_long)pte & PG_V) == 0) { 329e55a0cd8SPeter Wemm _kvm_err(kd, kd->program, "_kvm_vatop: pte not valid"); 3302f85bf6eSPeter Wemm goto invalid; 331e55a0cd8SPeter Wemm } 3322f85bf6eSPeter Wemm 333e55a0cd8SPeter Wemm a = ((u_long)pte & PG_FRAME) + offset; 334e55a0cd8SPeter Wemm s = _kvm_pa2off(kd, a, pa); 335e55a0cd8SPeter Wemm if (s == 0) { 336e55a0cd8SPeter Wemm _kvm_err(kd, kd->program, "_kvm_vatop: address not in dump"); 337e55a0cd8SPeter Wemm goto invalid; 338e55a0cd8SPeter Wemm } else 3392f85bf6eSPeter Wemm return (PAGE_SIZE - offset); 3402f85bf6eSPeter Wemm 3412f85bf6eSPeter Wemm invalid: 342e55a0cd8SPeter Wemm _kvm_err(kd, 0, "invalid address (0x%lx)", va); 3432f85bf6eSPeter Wemm return (0); 344f95a0250SRodney W. Grimes } 345f95a0250SRodney W. Grimes 346f95a0250SRodney W. Grimes int 347e55a0cd8SPeter Wemm _kvm_kvatop(kvm_t *kd, u_long va, off_t *pa) 3482f85bf6eSPeter Wemm { 349e55a0cd8SPeter Wemm 350e9ca6fe4SPeter Wemm if (kd->vmst->minidump) 351e9ca6fe4SPeter Wemm return (_kvm_minidump_kvatop(kd, va, pa)); 352e55a0cd8SPeter Wemm if (ISALIVE(kd)) { 353e55a0cd8SPeter Wemm _kvm_err(kd, 0, "kvm_kvatop called in live kernel!"); 354e55a0cd8SPeter Wemm return (0); 355e55a0cd8SPeter Wemm } 35621d54b07SRodney W. Grimes return (_kvm_vatop(kd, va, pa)); 357f95a0250SRodney W. Grimes } 358