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freebsd-skq/lib/libkvm/kvm_i386.h

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Add support to libkvm for reading vmcores from other architectures. - 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
2015-11-27 18:58:26 +00:00
/*-
* Copyright (c) 2015 John H. Baldwin <jhb@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef __KVM_I386_H__
#define __KVM_I386_H__
#ifdef __i386__
#include <vm/vm.h>
#include <vm/pmap.h>
#endif
typedef uint32_t i386_physaddr_t;
typedef uint32_t i386_pte_t;
typedef uint32_t i386_pde_t;
typedef uint64_t i386_physaddr_pae_t;
typedef uint64_t i386_pte_pae_t;
typedef uint64_t i386_pde_pae_t;
#define I386_PAGE_SHIFT 12
#define I386_PAGE_SIZE (1 << I386_PAGE_SHIFT)
#define I386_PAGE_MASK (I386_PAGE_SIZE - 1)
#define I386_NPTEPG (I386_PAGE_SIZE / sizeof(i386_pte_t))
#define I386_PDRSHIFT 22
#define I386_NBPDR (1 << I386_PDRSHIFT)
#define I386_PAGE_PS_MASK (I386_NBPDR - 1)
#define I386_NPTEPG_PAE (I386_PAGE_SIZE / sizeof(i386_pte_pae_t))
#define I386_PDRSHIFT_PAE 21
#define I386_NBPDR_PAE (1 << I386_PDRSHIFT_PAE)
#define I386_PAGE_PS_MASK_PAE (I386_NBPDR_PAE - 1)
#define I386_PG_V 0x001
#define I386_PG_PS 0x080
#define I386_PG_FRAME_PAE (0x000ffffffffff000ull)
#define I386_PG_PS_FRAME_PAE (0x000fffffffe00000ull)
#define I386_PG_FRAME (0xfffff000)
#define I386_PG_PS_FRAME (0xffc00000)
#ifdef __i386__
_Static_assert(PAGE_SHIFT == I386_PAGE_SHIFT, "PAGE_SHIFT mismatch");
_Static_assert(PAGE_SIZE == I386_PAGE_SIZE, "PAGE_SIZE mismatch");
_Static_assert(PAGE_MASK == I386_PAGE_MASK, "PAGE_MASK mismatch");
_Static_assert(NPTEPG == I386_NPTEPG, "NPTEPG mismatch");
_Static_assert(PDRSHIFT == I386_PDRSHIFT, "PDRSHIFT mismatch");
_Static_assert(NBPDR == I386_NBPDR, "NBPDR mismatch");
_Static_assert(PG_V == I386_PG_V, "PG_V mismatch");
_Static_assert(PG_PS == I386_PG_PS, "PG_PS mismatch");
Fix building with GCC since PAGE_MASK is signed on i386. Reviewed by: ngie MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D4772
2016-01-14 15:51:13 +00:00
_Static_assert((u_int)PG_FRAME == I386_PG_FRAME, "PG_FRAME mismatch");
Add support to libkvm for reading vmcores from other architectures. - 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
2015-11-27 18:58:26 +00:00
_Static_assert(PG_PS_FRAME == I386_PG_PS_FRAME, "PG_PS_FRAME mismatch");
#endif
int _i386_native(kvm_t *);
#endif /* !__KVM_I386_H__ */
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