git: fe532f1a5017 - main - libkvm: Remove mips support
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Date: Fri, 31 Dec 2021 03:58:07 UTC
The branch main has been updated by imp:
URL: https://cgit.FreeBSD.org/src/commit/?id=fe532f1a50172b67781c1838948eceb45caf91d2
commit fe532f1a50172b67781c1838948eceb45caf91d2
Author: Warner Losh <imp@FreeBSD.org>
AuthorDate: 2021-12-30 23:45:17 +0000
Commit: Warner Losh <imp@FreeBSD.org>
CommitDate: 2021-12-31 03:57:24 +0000
libkvm: Remove mips support
libkvm references files in sys/mips, so remove it ahead of removing
sys/mips.
Sponsored by: Netflix
---
lib/libkvm/Makefile | 1 -
lib/libkvm/kvm_minidump_mips.c | 372 -----------------------------------------
lib/libkvm/kvm_mips.h | 117 -------------
3 files changed, 490 deletions(-)
diff --git a/lib/libkvm/Makefile b/lib/libkvm/Makefile
index 7747518d05eb..7ebca5556ef6 100644
--- a/lib/libkvm/Makefile
+++ b/lib/libkvm/Makefile
@@ -14,7 +14,6 @@ SRCS= kvm.c kvm_cptime.c kvm_getloadavg.c \
kvm_amd64.c kvm_minidump_amd64.c \
kvm_arm.c kvm_minidump_arm.c \
kvm_i386.c kvm_minidump_i386.c \
- kvm_minidump_mips.c \
kvm_powerpc.c kvm_powerpc64.c \
kvm_minidump_riscv.c \
kvm_minidump_powerpc64.c kvm_minidump_powerpc64_hpt.c
diff --git a/lib/libkvm/kvm_minidump_mips.c b/lib/libkvm/kvm_minidump_mips.c
deleted file mode 100644
index dda6f3551872..000000000000
--- a/lib/libkvm/kvm_minidump_mips.c
+++ /dev/null
@@ -1,372 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * Copyright (c) 2010 Oleksandr Tymoshenko
- * Copyright (c) 2008 Semihalf, Grzegorz Bernacki
- * Copyright (c) 2006 Peter Wemm
- *
- * 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.
- *
- * From: FreeBSD: src/lib/libkvm/kvm_minidump_arm.c r214223
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-/*
- * MIPS machine dependent routines for kvm and minidumps.
- */
-
-#include <sys/param.h>
-#include <vm/vm.h>
-#include <kvm.h>
-#include <limits.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "../../sys/mips/include/cca.h"
-#define _KVM_MINIDUMP
-#include "../../sys/mips/include/cpuregs.h"
-#include "../../sys/mips/include/minidump.h"
-
-#include "kvm_private.h"
-#include "kvm_mips.h"
-
-#define mips_round_page(x) roundup2((kvaddr_t)(x), MIPS_PAGE_SIZE)
-
-struct vmstate {
- struct minidumphdr hdr;
- int pte_size;
-};
-
-static int
-_mips_minidump_probe(kvm_t *kd)
-{
-
- if (kd->nlehdr.e_ident[EI_CLASS] != ELFCLASS32 &&
- kd->nlehdr.e_ident[EI_CLASS] != ELFCLASS64)
- return (0);
- if (kd->nlehdr.e_machine != EM_MIPS)
- return (0);
- return (_kvm_is_minidump(kd));
-}
-
-static void
-_mips_minidump_freevtop(kvm_t *kd)
-{
- struct vmstate *vm = kd->vmst;
-
- free(vm);
- kd->vmst = NULL;
-}
-
-static int
-_mips_minidump_initvtop(kvm_t *kd)
-{
- struct vmstate *vmst;
- off_t off, dump_avail_off, sparse_off;
-
- vmst = _kvm_malloc(kd, sizeof(*vmst));
- if (vmst == NULL) {
- _kvm_err(kd, kd->program, "cannot allocate vm");
- return (-1);
- }
-
- kd->vmst = vmst;
-
- if (kd->nlehdr.e_ident[EI_CLASS] == ELFCLASS64 ||
- kd->nlehdr.e_flags & EF_MIPS_ABI2)
- vmst->pte_size = 64;
- else
- vmst->pte_size = 32;
-
- if (pread(kd->pmfd, &vmst->hdr,
- sizeof(vmst->hdr), 0) != sizeof(vmst->hdr)) {
- _kvm_err(kd, kd->program, "cannot read dump header");
- return (-1);
- }
-
- if (strncmp(MINIDUMP_MAGIC, vmst->hdr.magic,
- sizeof(vmst->hdr.magic)) != 0) {
- _kvm_err(kd, kd->program, "not a minidump for this platform");
- return (-1);
- }
- vmst->hdr.version = _kvm32toh(kd, vmst->hdr.version);
- if (vmst->hdr.version != MINIDUMP_VERSION && vmst->hdr.version != 1) {
- _kvm_err(kd, kd->program, "wrong minidump version. "
- "Expected %d got %d", MINIDUMP_VERSION, vmst->hdr.version);
- return (-1);
- }
- vmst->hdr.msgbufsize = _kvm32toh(kd, vmst->hdr.msgbufsize);
- vmst->hdr.bitmapsize = _kvm32toh(kd, vmst->hdr.bitmapsize);
- vmst->hdr.ptesize = _kvm32toh(kd, vmst->hdr.ptesize);
- vmst->hdr.kernbase = _kvm64toh(kd, vmst->hdr.kernbase);
- vmst->hdr.dmapbase = _kvm64toh(kd, vmst->hdr.dmapbase);
- vmst->hdr.dmapend = _kvm64toh(kd, vmst->hdr.dmapend);
- vmst->hdr.dumpavailsize = vmst->hdr.version == MINIDUMP_VERSION ?
- _kvm32toh(kd, vmst->hdr.dumpavailsize) : 0;
-
- /* Skip header and msgbuf */
- dump_avail_off = MIPS_PAGE_SIZE + mips_round_page(vmst->hdr.msgbufsize);
-
- /* Skip dump_avail */
- off = dump_avail_off + mips_round_page(vmst->hdr.dumpavailsize);
-
- sparse_off = off + mips_round_page(vmst->hdr.bitmapsize) +
- mips_round_page(vmst->hdr.ptesize);
- if (_kvm_pt_init(kd, vmst->hdr.dumpavailsize, dump_avail_off,
- vmst->hdr.bitmapsize, off, sparse_off, MIPS_PAGE_SIZE) == -1) {
- return (-1);
- }
- off += mips_round_page(vmst->hdr.bitmapsize);
-
- if (_kvm_pmap_init(kd, vmst->hdr.ptesize, off) == -1) {
- return (-1);
- }
- off += mips_round_page(vmst->hdr.ptesize);
-
- return (0);
-}
-
-static int
-_mips_minidump_kvatop(kvm_t *kd, kvaddr_t va, off_t *pa)
-{
- struct vmstate *vm;
- mips_physaddr_t offset, a;
- kvaddr_t pteindex;
- u_long valid;
- off_t ofs;
- mips32_pte_t pte32;
- mips64_pte_t pte64;
-
- if (ISALIVE(kd)) {
- _kvm_err(kd, 0, "_mips_minidump_kvatop called in live kernel!");
- return (0);
- }
-
- offset = va & MIPS_PAGE_MASK;
- /* Operate with page-aligned address */
- va &= ~MIPS_PAGE_MASK;
-
- vm = kd->vmst;
- if (kd->nlehdr.e_ident[EI_CLASS] == ELFCLASS64) {
- if (va >= MIPS_XKPHYS_START && va < MIPS_XKPHYS_END) {
- a = va & MIPS_XKPHYS_PHYS_MASK;
- goto found;
- }
- if (va >= MIPS64_KSEG0_START && va < MIPS64_KSEG0_END) {
- a = va & MIPS_KSEG0_PHYS_MASK;
- goto found;
- }
- if (va >= MIPS64_KSEG1_START && va < MIPS64_KSEG1_END) {
- a = va & MIPS_KSEG0_PHYS_MASK;
- goto found;
- }
- } else {
- if (va >= MIPS32_KSEG0_START && va < MIPS32_KSEG0_END) {
- a = va & MIPS_KSEG0_PHYS_MASK;
- goto found;
- }
- if (va >= MIPS32_KSEG1_START && va < MIPS32_KSEG1_END) {
- a = va & MIPS_KSEG0_PHYS_MASK;
- goto found;
- }
- }
- if (va >= vm->hdr.kernbase) {
- pteindex = (va - vm->hdr.kernbase) >> MIPS_PAGE_SHIFT;
- if (vm->pte_size == 64) {
- valid = pteindex < vm->hdr.ptesize / sizeof(pte64);
- if (pteindex >= vm->hdr.ptesize / sizeof(pte64))
- goto invalid;
- pte64 = _mips64_pte_get(kd, pteindex);
- valid = pte64 & MIPS_PTE_V;
- if (valid)
- a = MIPS64_PTE_TO_PA(pte64);
- } else {
- if (pteindex >= vm->hdr.ptesize / sizeof(pte32))
- goto invalid;
- pte32 = _mips32_pte_get(kd, pteindex);
- valid = pte32 & MIPS_PTE_V;
- if (valid)
- a = MIPS32_PTE_TO_PA(pte32);
- }
- if (!valid) {
- _kvm_err(kd, kd->program, "_mips_minidump_kvatop: pte "
- "not valid");
- goto invalid;
- }
- } else {
- _kvm_err(kd, kd->program, "_mips_minidump_kvatop: virtual "
- "address 0x%jx not minidumped", (uintmax_t)va);
- return (0);
- }
-
-found:
- ofs = _kvm_pt_find(kd, a, MIPS_PAGE_SIZE);
- if (ofs == -1) {
- _kvm_err(kd, kd->program, "_mips_minidump_kvatop: physical "
- "address 0x%jx not in minidump", (uintmax_t)a);
- goto invalid;
- }
-
- *pa = ofs + offset;
- return (MIPS_PAGE_SIZE - offset);
-
-
-invalid:
- _kvm_err(kd, 0, "invalid address (0x%jx)", (uintmax_t)va);
- return (0);
-}
-
-static int
-#ifdef __mips__
-_mips_native(kvm_t *kd)
-#else
-_mips_native(kvm_t *kd __unused)
-#endif
-{
-
-#ifdef __mips__
-#ifdef __mips_n64
- if (kd->nlehdr.e_ident[EI_CLASS] != ELFCLASS64)
- return (0);
-#else
- if (kd->nlehdr.e_ident[EI_CLASS] != ELFCLASS32)
- return (0);
-#ifdef __mips_n32
- if (!(kd->nlehdr.e_flags & EF_MIPS_ABI2))
- return (0);
-#else
- if (kd->nlehdr.e_flags & EF_MIPS_ABI2)
- return (0);
-#endif
-#endif
-#if _BYTE_ORDER == _LITTLE_ENDIAN
- return (kd->nlehdr.e_ident[EI_DATA] == ELFDATA2LSB);
-#else
- return (kd->nlehdr.e_ident[EI_DATA] == ELFDATA2MSB);
-#endif
-#else
- return (0);
-#endif
-}
-
-struct mips_iter {
- kvm_t *kd;
- u_long nptes;
- u_long pteindex;
-};
-
-static void
-_mips_iterator_init(struct mips_iter *it, kvm_t *kd)
-{
- struct vmstate *vm = kd->vmst;
-
- it->kd = kd;
- it->pteindex = 0;
- if (vm->pte_size == 64)
- it->nptes = vm->hdr.ptesize / sizeof(mips64_pte_t);
- else
- it->nptes = vm->hdr.ptesize / sizeof(mips32_pte_t);
- return;
-}
-
-static int
-_mips_iterator_next(struct mips_iter *it, u_long *pa, u_long *va, u_long *dva,
- vm_prot_t *prot)
-{
- struct vmstate *vm = it->kd->vmst;
- int found = 0;
- mips64_pte_t pte64;
- mips32_pte_t pte32;
-
- /*
- * mips/mips/pmap.c: init_pte_prot / pmap_protect indicate that all
- * pages are R|X at least.
- */
- *prot = VM_PROT_READ | VM_PROT_EXECUTE;
- *pa = 0;
- *va = 0;
- *dva = 0;
- for (;it->pteindex < it->nptes && found == 0; it->pteindex++) {
- if (vm->pte_size == 64) {
- pte64 = _mips64_pte_get(it->kd, it->pteindex);
- if ((pte64 & MIPS_PTE_V) == 0)
- continue;
- if ((pte64 & MIPS64_PTE_RO) == 0)
- *prot |= VM_PROT_WRITE;
- *pa = MIPS64_PTE_TO_PA(pte64);
- } else {
- pte32 = _mips32_pte_get(it->kd, it->pteindex);
- if ((pte32 & MIPS_PTE_V) == 0)
- continue;
- if ((pte32 & MIPS32_PTE_RO) == 0)
- *prot |= VM_PROT_WRITE;
- *pa = MIPS32_PTE_TO_PA(pte32);
- }
- *va = vm->hdr.kernbase + (it->pteindex << MIPS_PAGE_SHIFT);
- found = 1;
- /* advance pteindex regardless */
- }
-
- return found;
-}
-
-static int
-_mips_minidump_walk_pages(kvm_t *kd, kvm_walk_pages_cb_t *cb, void *arg)
-{
- struct mips_iter it;
- u_long dva, pa, va;
- vm_prot_t prot;
-
- /* Generate direct mapped entries; need page entries for prot etc? */
- if (kd->nlehdr.e_ident[EI_CLASS] == ELFCLASS64) {
- /* MIPS_XKPHYS_START..MIPS_XKPHYS_END */
- /* MIPS64_KSEG0_START..MIPS64_KSEG0_END */
- /* MIPS64_KSEG1_START..MIPS64_KSEG1_START */
- } else {
- /* MIPS32_KSEG0_START..MIPS32_KSEG0_END */
- /* MIPS32_KSEG1_START..MIPS32_KSEG1_END */
- }
-
- _mips_iterator_init(&it, kd);
- while (_mips_iterator_next(&it, &pa, &va, &dva, &prot)) {
- if (!_kvm_visit_cb(kd, cb, arg, pa, va, dva,
- prot, MIPS_PAGE_SIZE, 0)) {
- return (0);
- }
- }
- return (1);
-}
-
-static struct kvm_arch kvm_mips_minidump = {
- .ka_probe = _mips_minidump_probe,
- .ka_initvtop = _mips_minidump_initvtop,
- .ka_freevtop = _mips_minidump_freevtop,
- .ka_kvatop = _mips_minidump_kvatop,
- .ka_native = _mips_native,
- .ka_walk_pages = _mips_minidump_walk_pages,
-};
-
-KVM_ARCH(kvm_mips_minidump);
diff --git a/lib/libkvm/kvm_mips.h b/lib/libkvm/kvm_mips.h
deleted file mode 100644
index 9efe5b8e9093..000000000000
--- a/lib/libkvm/kvm_mips.h
+++ /dev/null
@@ -1,117 +0,0 @@
-/*-
- * 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_MIPS_H__
-#define __KVM_MIPS_H__
-
-#ifdef __mips__
-#include <machine/pte.h>
-#endif
-
-typedef uint64_t mips_physaddr_t;
-
-typedef uint32_t mips32_pte_t;
-typedef uint64_t mips64_pte_t;
-
-#define MIPS_PAGE_SHIFT 12
-#define MIPS_PAGE_SIZE (1 << MIPS_PAGE_SHIFT)
-#define MIPS_PAGE_MASK (MIPS_PAGE_SIZE - 1)
-
-#define MIPS32_KSEG0_START 0x80000000
-#define MIPS32_KSEG0_END 0x9fffffff
-#define MIPS32_KSEG1_START 0xa0000000
-#define MIPS32_KSEG1_END 0xbfffffff
-#define MIPS64_KSEG0_START 0xffffffff80000000
-#define MIPS64_KSEG0_END 0xffffffff9fffffff
-#define MIPS64_KSEG1_START 0xffffffffa0000000
-#define MIPS64_KSEG1_END 0xffffffffbfffffff
-
-#define MIPS32_PFN_MASK (0x1FFFFFC0)
-#define MIPS64_PFN_MASK 0x3FFFFFFC0
-#define MIPS_PFN_SHIFT (6)
-
-#define MIPS_PFN_TO_PA(pfn) (((pfn) >> MIPS_PFN_SHIFT) << MIPS_PAGE_SHIFT)
-#define MIPS32_PTE_TO_PFN(pte) ((pte) & MIPS32_PFN_MASK)
-#define MIPS32_PTE_TO_PA(pte) (MIPS_PFN_TO_PA(MIPS32_PTE_TO_PFN((pte))))
-#define MIPS64_PTE_TO_PFN(pte) ((pte) & MIPS64_PFN_MASK)
-#define MIPS64_PTE_TO_PA(pte) (MIPS_PFN_TO_PA(MIPS64_PTE_TO_PFN((pte))))
-
-#define MIPS32_SWBITS_SHIFT 29
-#define MIPS64_SWBITS_SHIFT 55
-#define MIPS_PTE_V 0x02
-#define MIPS32_PTE_RO ((mips32_pte_t)0x01 << MIPS32_SWBITS_SHIFT)
-#define MIPS64_PTE_RO ((mips64_pte_t)0x01 << MIPS64_SWBITS_SHIFT)
-
-static inline mips32_pte_t
-_mips32_pte_get(kvm_t *kd, u_long pteindex)
-{
- mips32_pte_t *pte = _kvm_pmap_get(kd, pteindex, sizeof(*pte));
-
- return _kvm32toh(kd, *pte);
-}
-
-static inline mips64_pte_t
-_mips64_pte_get(kvm_t *kd, u_long pteindex)
-{
- mips64_pte_t *pte = _kvm_pmap_get(kd, pteindex, sizeof(*pte));
-
- return _kvm64toh(kd, *pte);
-}
-
-#ifdef __mips__
-_Static_assert(PAGE_SHIFT == MIPS_PAGE_SHIFT, "PAGE_SHIFT mismatch");
-_Static_assert(PAGE_SIZE == MIPS_PAGE_SIZE, "PAGE_SIZE mismatch");
-_Static_assert(PAGE_MASK == MIPS_PAGE_MASK, "PAGE_MASK mismatch");
-#ifdef __mips_n64
-_Static_assert((uint64_t)MIPS_KSEG0_START == MIPS64_KSEG0_START,
- "MIPS_KSEG0_START mismatch");
-_Static_assert((uint64_t)MIPS_KSEG0_END == MIPS64_KSEG0_END,
- "MIPS_KSEG0_END mismatch");
-_Static_assert((uint64_t)MIPS_KSEG1_START == MIPS64_KSEG1_START,
- "MIPS_KSEG1_START mismatch");
-_Static_assert((uint64_t)MIPS_KSEG1_END == MIPS64_KSEG1_END,
- "MIPS_KSEG1_END mismatch");
-#else
-_Static_assert((uint32_t)MIPS_KSEG0_START == MIPS32_KSEG0_START,
- "MIPS_KSEG0_START mismatch");
-_Static_assert((uint32_t)MIPS_KSEG0_END == MIPS32_KSEG0_END,
- "MIPS_KSEG0_END mismatch");
-_Static_assert((uint32_t)MIPS_KSEG1_START == MIPS32_KSEG1_START,
- "MIPS_KSEG1_START mismatch");
-_Static_assert((uint32_t)MIPS_KSEG1_END == MIPS32_KSEG1_END,
- "MIPS_KSEG1_END mismatch");
-#endif
-#if defined(__mips_n64) || defined(__mips_n32)
-_Static_assert(TLBLO_PFN_MASK == MIPS64_PFN_MASK, "TLBLO_PFN_MASK mismatch");
-#else
-_Static_assert(TLBLO_PFN_MASK == MIPS32_PFN_MASK, "TLBLO_PFN_MASK mismatch");
-#endif
-_Static_assert(TLBLO_PFN_SHIFT == MIPS_PFN_SHIFT, "TLBLO_PFN_SHIFT mismatch");
-_Static_assert(TLB_PAGE_SHIFT == MIPS_PAGE_SHIFT, "TLB_PAGE_SHIFT mismatch");
-#endif
-
-#endif /* !__KVM_MIPS_H__ */