7f911abe54
- Add a kvaddr_type to represent kernel virtual addresses instead of unsigned long. - Add a struct kvm_nlist which is a stripped down version of struct nlist that uses kvaddr_t for n_value. - Add a kvm_native() routine that returns true if an open kvm descriptor is for a native kernel and memory image. - Add a kvm_open2() function similar to kvm_openfiles(). It drops the unused 'swapfile' argument and adds a new function pointer argument for a symbol resolving function. Native kernels still use _fdnlist() from libc to resolve symbols if a resolver function is not supplied, but cross kernels require a resolver. - Add a kvm_nlist2() function similar to kvm_nlist() except that it uses struct kvm_nlist instead of struct nlist. - Add a kvm_read2() function similar to kvm_read() except that it uses kvaddr_t instead of unsigned long for the kernel virtual address. - Add a new kvm_arch switch of routines needed by a vmcore backend. Each backend is responsible for implementing kvm_read2() for a given vmcore format. - Use libelf to read headers from ELF kernels and cores (except for powerpc cores). - Add internal helper routines for the common page offset hash table used by the minidump backends. - Port all of the existing kvm backends to implement a kvm_arch switch and to be cross-friendly by using private constants instead of ones that vary by platform (e.g. PAGE_SIZE). Static assertions are present when a given backend is compiled natively to ensure the private constants match the real ones. - Enable all of the existing vmcore backends on all platforms. This means that libkvm on any platform should be able to perform KVA translation and read data from a vmcore of any platform. Tested on: amd64, i386, sparc64 (marius) Differential Revision: https://reviews.freebsd.org/D3341
89 lines
3.6 KiB
C
89 lines
3.6 KiB
C
/*-
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* Copyright (c) 2015 John H. Baldwin <jhb@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef __KVM_AMD64_H__
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#define __KVM_AMD64_H__
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#ifdef __amd64__
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#endif
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typedef uint64_t amd64_physaddr_t;
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typedef uint64_t amd64_pte_t;
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typedef uint64_t amd64_pde_t;
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typedef uint64_t amd64_pdpe_t;
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typedef uint64_t amd64_pml4e_t;
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#define AMD64_NPTEPG (AMD64_PAGE_SIZE / sizeof(amd64_pte_t))
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#define AMD64_PAGE_SHIFT 12
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#define AMD64_PAGE_SIZE (1 << AMD64_PAGE_SHIFT)
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#define AMD64_PAGE_MASK (AMD64_PAGE_SIZE - 1)
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#define AMD64_NPDEPG (AMD64_PAGE_SIZE / sizeof(amd64_pde_t))
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#define AMD64_PDRSHIFT 21
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#define AMD64_NBPDR (1 << AMD64_PDRSHIFT)
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#define AMD64_PDRMASK (AMD64_NBPDR - 1)
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#define AMD64_NPDPEPG (AMD64_PAGE_SIZE / sizeof(amd64_pdpe_t))
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#define AMD64_PDPSHIFT 30
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#define AMD64_NBPDP (1 << AMD64_PDPSHIFT)
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#define AMD64_PDPMASK (AMD64_NBPDP - 1)
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#define AMD64_NPML4EPG (AMD64_PAGE_SIZE / sizeof(amd64_pml4e_t))
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#define AMD64_PML4SHIFT 39
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#define AMD64_PG_V 0x001
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#define AMD64_PG_PS 0x080
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#define AMD64_PG_FRAME (0x000ffffffffff000)
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#define AMD64_PG_PS_FRAME (0x000fffffffe00000)
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#define AMD64_PG_1GB_FRAME (0x000fffffc0000000)
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#ifdef __amd64__
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_Static_assert(NPTEPG == AMD64_NPTEPG, "NPTEPG mismatch");
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_Static_assert(PAGE_SHIFT == AMD64_PAGE_SHIFT, "PAGE_SHIFT mismatch");
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_Static_assert(PAGE_SIZE == AMD64_PAGE_SIZE, "PAGE_SIZE mismatch");
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_Static_assert(PAGE_MASK == AMD64_PAGE_MASK, "PAGE_MASK mismatch");
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_Static_assert(NPDEPG == AMD64_NPDEPG, "NPDEPG mismatch");
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_Static_assert(PDRSHIFT == AMD64_PDRSHIFT, "PDRSHIFT mismatch");
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_Static_assert(NBPDR == AMD64_NBPDR, "NBPDR mismatch");
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_Static_assert(PDRMASK == AMD64_PDRMASK, "PDRMASK mismatch");
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_Static_assert(NPDPEPG == AMD64_NPDPEPG, "NPDPEPG mismatch");
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_Static_assert(PDPSHIFT == AMD64_PDPSHIFT, "PDPSHIFT mismatch");
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_Static_assert(NBPDP == AMD64_NBPDP, "NBPDP mismatch");
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_Static_assert(PDPMASK == AMD64_PDPMASK, "PDPMASK mismatch");
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_Static_assert(NPML4EPG == AMD64_NPML4EPG, "NPML4EPG mismatch");
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_Static_assert(PML4SHIFT == AMD64_PML4SHIFT, "PML4SHIFT mismatch");
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_Static_assert(PG_V == AMD64_PG_V, "PG_V mismatch");
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_Static_assert(PG_PS == AMD64_PG_PS, "PG_PS mismatch");
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_Static_assert(PG_FRAME == AMD64_PG_FRAME, "PG_FRAME mismatch");
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_Static_assert(PG_PS_FRAME == AMD64_PG_PS_FRAME, "PG_PS_FRAME mismatch");
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#endif
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int _amd64_native(kvm_t *);
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#endif /* !__KVM_AMD64_H__ */
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