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freebsd-skq/lib/libkvm/kvm_aarch64.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>
*
* 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_AARCH64_H__
#define __KVM_AARCH64_H__
#ifdef __aarch64__
#include <machine/pte.h>
#endif
typedef uint64_t aarch64_physaddr_t;
typedef uint64_t aarch64_pte_t;
#define AARCH64_PAGE_SHIFT 12
#define AARCH64_PAGE_SIZE (1 << AARCH64_PAGE_SHIFT)
#define AARCH64_PAGE_MASK (AARCH64_PAGE_SIZE - 1)
libkvm: add kvm_walk_pages API. This API allows callers to enumerate all known pages, including any direct map & kernel map virtual addresses, physical addresses, size, offset into the core, & protection configured. For architectures that support direct map addresses, also generate pages for any direct map only addresses that are not associated with kernel map addresses. Fix page size portability issue left behind from previous kvm page table lookup interface. Reviewed by: jhb Sponsored by: Backtrace I/O Differential Revision: https://reviews.freebsd.org/D12279
2017-11-11 23:30:58 +00:00
/* Source: arm64/include/pte.h */
Chase r350037. Reported by: jenkins MFC with: r350037 Sponsored by: The FreeBSD Foundation
2019-07-16 16:02:20 +00:00
#define AARCH64_ATTR_MASK 0xfffc000000000fff
libkvm: fix build failures
2017-11-12 01:36:48 +00:00
#define AARCH64_ATTR_UXN (1ULL << 54)
#define AARCH64_ATTR_PXN (1ULL << 53)
libkvm: add kvm_walk_pages API. This API allows callers to enumerate all known pages, including any direct map & kernel map virtual addresses, physical addresses, size, offset into the core, & protection configured. For architectures that support direct map addresses, also generate pages for any direct map only addresses that are not associated with kernel map addresses. Fix page size portability issue left behind from previous kvm page table lookup interface. Reviewed by: jhb Sponsored by: Backtrace I/O Differential Revision: https://reviews.freebsd.org/D12279
2017-11-11 23:30:58 +00:00
#define AARCH64_ATTR_XN (AARCH64_ATTR_PXN | AARCH64_ATTR_UXN)
#define AARCH64_ATTR_AP(x) ((x) << 6)
#define AARCH64_ATTR_AP_RO (1 << 1)
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
#define AARCH64_ATTR_DESCR_MASK 3
#define AARCH64_L3_SHIFT 12
#define AARCH64_L3_PAGE 0x3
#ifdef __aarch64__
_Static_assert(PAGE_SHIFT == AARCH64_PAGE_SHIFT, "PAGE_SHIFT mismatch");
_Static_assert(PAGE_SIZE == AARCH64_PAGE_SIZE, "PAGE_SIZE mismatch");
_Static_assert(PAGE_MASK == AARCH64_PAGE_MASK, "PAGE_MASK mismatch");
_Static_assert(ATTR_MASK == AARCH64_ATTR_MASK, "ATTR_MASK mismatch");
_Static_assert(ATTR_DESCR_MASK == AARCH64_ATTR_DESCR_MASK,
"ATTR_DESCR_MASK mismatch");
_Static_assert(L3_SHIFT == AARCH64_L3_SHIFT, "L3_SHIFT mismatch");
_Static_assert(L3_PAGE == AARCH64_L3_PAGE, "L3_PAGE mismatch");
#endif
#endif /* !__KVM_AARCH64_H__ */
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