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
119 lines
4.5 KiB
C
119 lines
4.5 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_SPARC64_H__
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#define __KVM_SPARC64_H__
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#ifdef __sparc64__
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#include <sys/queue.h>
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#include <machine/tlb.h>
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#include <machine/tte.h>
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#endif
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#define SPARC64_PAGE_SHIFT 13
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#define SPARC64_PAGE_SIZE (1 << SPARC64_PAGE_SHIFT)
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#define SPARC64_PAGE_MASK (SPARC64_PAGE_SIZE - 1)
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#define SPARC64_MIN_DIRECT_ADDRESS (0xfffff80000000000)
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#define SPARC64_DIRECT_ADDRESS_BITS (43)
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#define SPARC64_DIRECT_ADDRESS_MASK \
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(((uint64_t)1 << SPARC64_DIRECT_ADDRESS_BITS) - 1)
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#define SPARC64_DIRECT_TO_PHYS(va) ((va) & SPARC64_DIRECT_ADDRESS_MASK)
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#define SPARC64_TTE_SHIFT (5)
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#define SPARC64_TD_SIZE_SHIFT (61)
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#define SPARC64_TD_PA_SHIFT (13)
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#define SPARC64_TD_SIZE_BITS (2)
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#define SPARC64_TD_PA_CH_BITS (30) /* US-III{,i,+}, US-IV{,+}, SPARC64 V */
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#define SPARC64_TD_PA_BITS SPARC64_TD_PA_CH_BITS
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#define SPARC64_TD_SIZE_MASK (((uint64_t)1 << SPARC64_TD_SIZE_BITS) - 1)
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#define SPARC64_TD_PA_MASK (((uint64_t)1 << SPARC64_TD_PA_BITS) - 1)
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#define SPARC64_TD_V ((uint64_t)1 << 63)
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#define SPARC64_TV_SIZE_BITS (SPARC64_TD_SIZE_BITS)
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#define SPARC64_TV_VPN(va, sz) \
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((((va) >> SPARC64_TTE_PAGE_SHIFT(sz)) << SPARC64_TV_SIZE_BITS) | sz)
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#define SPARC64_TTE_SIZE_SPREAD (3)
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#define SPARC64_TTE_PAGE_SHIFT(sz) \
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(SPARC64_PAGE_SHIFT + ((sz) * SPARC64_TTE_SIZE_SPREAD))
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#define SPARC64_TTE_GET_SIZE(tp) \
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(((tp)->tte_data >> SPARC64_TD_SIZE_SHIFT) & SPARC64_TD_SIZE_MASK)
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#define SPARC64_TTE_GET_PA(tp) \
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((tp)->tte_data & (SPARC64_TD_PA_MASK << SPARC64_TD_PA_SHIFT))
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struct sparc64_tte {
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uint64_t tte_vpn;
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uint64_t tte_data;
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};
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static __inline int
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sparc64_tte_match(struct sparc64_tte *tp, kvaddr_t va)
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{
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return (((tp->tte_data & SPARC64_TD_V) != 0) &&
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(tp->tte_vpn == SPARC64_TV_VPN(va, SPARC64_TTE_GET_SIZE(tp))));
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}
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#ifdef __sparc64__
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_Static_assert(PAGE_SHIFT == SPARC64_PAGE_SHIFT, "PAGE_SHIFT mismatch");
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_Static_assert(PAGE_SIZE == SPARC64_PAGE_SIZE, "PAGE_SIZE mismatch");
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_Static_assert(PAGE_MASK == SPARC64_PAGE_MASK, "PAGE_MASK mismatch");
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_Static_assert(VM_MIN_DIRECT_ADDRESS == SPARC64_MIN_DIRECT_ADDRESS,
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"VM_MIN_DIRECT_ADDRESS mismatch");
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_Static_assert(TLB_DIRECT_ADDRESS_BITS == SPARC64_DIRECT_ADDRESS_BITS,
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"TLB_DIRECT_ADDRESS_BITS mismatch");
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_Static_assert(TLB_DIRECT_ADDRESS_MASK == SPARC64_DIRECT_ADDRESS_MASK,
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"TLB_DIRECT_ADDRESS_MASK mismatch");
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_Static_assert(TTE_SHIFT == SPARC64_TTE_SHIFT, "TTE_SHIFT mismatch");
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_Static_assert(TD_SIZE_SHIFT == SPARC64_TD_SIZE_SHIFT,
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"TD_SIZE_SHIFT mismatch");
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_Static_assert(TD_PA_SHIFT == SPARC64_TD_PA_SHIFT,
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"TD_PA_SHIFT mismatch");
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_Static_assert(TD_SIZE_BITS == SPARC64_TD_SIZE_BITS, "TD_SIZE_BITS mismatch");
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_Static_assert(TD_PA_BITS == SPARC64_TD_PA_BITS, "TD_PA_BITS mismatch");
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_Static_assert(TD_SIZE_MASK == SPARC64_TD_SIZE_MASK, "TD_SIZE_MASK mismatch");
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_Static_assert(TD_PA_MASK == SPARC64_TD_PA_MASK, "TD_PA_MASK mismatch");
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_Static_assert(TD_V == SPARC64_TD_V, "TD_V mismatch");
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_Static_assert(TV_SIZE_BITS == SPARC64_TV_SIZE_BITS, "TV_SIZE_BITS mismatch");
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_Static_assert(TTE_SIZE_SPREAD == SPARC64_TTE_SIZE_SPREAD,
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"TTE_SIZE_SPREAD mismatch");
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#endif
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#endif /* !__KVM_SPARC64_H__ */
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