summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--lib/libkvm/kvm_amd64.c286
-rw-r--r--lib/libkvm/kvm_i386.c286
2 files changed, 572 insertions, 0 deletions
diff --git a/lib/libkvm/kvm_amd64.c b/lib/libkvm/kvm_amd64.c
new file mode 100644
index 000000000000..2154a23f3007
--- /dev/null
+++ b/lib/libkvm/kvm_amd64.c
@@ -0,0 +1,286 @@
+/*-
+ * Copyright (c) 1989, 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software developed by the Computer Systems
+ * Engineering group at Lawrence Berkeley Laboratory under DARPA contract
+ * BG 91-66 and contributed to Berkeley.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Hp300 machine dependent routines for kvm. Hopefully, the forthcoming
+ * vm code will one day obsolete this module.
+ */
+
+#include <sys/param.h>
+#include <sys/user.h>
+#include <sys/proc.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <nlist.h>
+#include <kvm.h>
+
+#include <vm/vm.h>
+#include <vm/vm_param.h>
+
+#include <limits.h>
+#include <db.h>
+
+#include "kvm_private.h"
+
+#if defined(hp300)
+#include <hp300/hp300/pte.h>
+#endif
+
+#if defined(luna68k)
+#include <luna68k/luna68k/pte.h>
+#endif
+
+#ifndef btop
+#define btop(x) (((unsigned)(x)) >> PGSHIFT) /* XXX */
+#define ptob(x) ((caddr_t)((x) << PGSHIFT)) /* XXX */
+#endif
+
+struct vmstate {
+ u_long lowram;
+ int mmutype;
+ struct ste *Sysseg;
+};
+
+#define KREAD(kd, addr, p)\
+ (kvm_read(kd, addr, (char *)(p), sizeof(*(p))) != sizeof(*(p)))
+
+void
+_kvm_freevtop(kd)
+ kvm_t *kd;
+{
+ if (kd->vmst != 0)
+ free(kd->vmst);
+}
+
+int
+_kvm_initvtop(kd)
+ kvm_t *kd;
+{
+ struct vmstate *vm;
+ struct nlist nlist[4];
+
+ vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
+ if (vm == 0)
+ return (-1);
+ kd->vmst = vm;
+
+ nlist[0].n_name = "_lowram";
+ nlist[1].n_name = "_mmutype";
+ nlist[2].n_name = "_Sysseg";
+ nlist[3].n_name = 0;
+
+ if (kvm_nlist(kd, nlist) != 0) {
+ _kvm_err(kd, kd->program, "bad namelist");
+ return (-1);
+ }
+ vm->Sysseg = 0;
+ if (KREAD(kd, (u_long)nlist[0].n_value, &vm->lowram)) {
+ _kvm_err(kd, kd->program, "cannot read lowram");
+ return (-1);
+ }
+ if (KREAD(kd, (u_long)nlist[1].n_value, &vm->mmutype)) {
+ _kvm_err(kd, kd->program, "cannot read mmutype");
+ return (-1);
+ }
+ if (KREAD(kd, (u_long)nlist[2].n_value, &vm->Sysseg)) {
+ _kvm_err(kd, kd->program, "cannot read segment table");
+ return (-1);
+ }
+ return (0);
+}
+
+static int
+_kvm_vatop(kd, sta, va, pa)
+ kvm_t *kd;
+ struct ste *sta;
+ u_long va;
+ u_long *pa;
+{
+ register struct vmstate *vm;
+ register u_long lowram;
+ register u_long addr;
+ int p, ste, pte;
+ int offset;
+
+ if (ISALIVE(kd)) {
+ _kvm_err(kd, 0, "vatop called in live kernel!");
+ return((off_t)0);
+ }
+ vm = kd->vmst;
+ offset = va & PGOFSET;
+ /*
+ * If we are initializing (kernel segment table pointer not yet set)
+ * then return pa == va to avoid infinite recursion.
+ */
+ if (vm->Sysseg == 0) {
+ *pa = va;
+ return (NBPG - offset);
+ }
+ lowram = vm->lowram;
+ if (vm->mmutype == -2) {
+ struct ste *sta2;
+
+ addr = (u_long)&sta[va >> SG4_SHIFT1];
+ /*
+ * Can't use KREAD to read kernel segment table entries.
+ * Fortunately it is 1-to-1 mapped so we don't have to.
+ */
+ if (sta == vm->Sysseg) {
+ if (lseek(kd->pmfd, (off_t)addr, 0) == -1 ||
+ read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0)
+ goto invalid;
+ } else if (KREAD(kd, addr, &ste))
+ goto invalid;
+ if ((ste & SG_V) == 0) {
+ _kvm_err(kd, 0, "invalid level 1 descriptor (%x)",
+ ste);
+ return((off_t)0);
+ }
+ sta2 = (struct ste *)(ste & SG4_ADDR1);
+ addr = (u_long)&sta2[(va & SG4_MASK2) >> SG4_SHIFT2];
+ /*
+ * Address from level 1 STE is a physical address,
+ * so don't use kvm_read.
+ */
+ if (lseek(kd->pmfd, (off_t)(addr - lowram), 0) == -1 ||
+ read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0)
+ goto invalid;
+ if ((ste & SG_V) == 0) {
+ _kvm_err(kd, 0, "invalid level 2 descriptor (%x)",
+ ste);
+ return((off_t)0);
+ }
+ sta2 = (struct ste *)(ste & SG4_ADDR2);
+ addr = (u_long)&sta2[(va & SG4_MASK3) >> SG4_SHIFT3];
+ } else {
+ addr = (u_long)&sta[va >> SEGSHIFT];
+ /*
+ * Can't use KREAD to read kernel segment table entries.
+ * Fortunately it is 1-to-1 mapped so we don't have to.
+ */
+ if (sta == vm->Sysseg) {
+ if (lseek(kd->pmfd, (off_t)addr, 0) == -1 ||
+ read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0)
+ goto invalid;
+ } else if (KREAD(kd, addr, &ste))
+ goto invalid;
+ if ((ste & SG_V) == 0) {
+ _kvm_err(kd, 0, "invalid segment (%x)", ste);
+ return((off_t)0);
+ }
+ p = btop(va & SG_PMASK);
+ addr = (ste & SG_FRAME) + (p * sizeof(struct pte));
+ }
+ /*
+ * Address from STE is a physical address so don't use kvm_read.
+ */
+ if (lseek(kd->pmfd, (off_t)(addr - lowram), 0) == -1 ||
+ read(kd->pmfd, (char *)&pte, sizeof(pte)) < 0)
+ goto invalid;
+ addr = pte & PG_FRAME;
+ if (pte == PG_NV) {
+ _kvm_err(kd, 0, "page not valid");
+ return (0);
+ }
+ *pa = addr - lowram + offset;
+
+ return (NBPG - offset);
+invalid:
+ _kvm_err(kd, 0, "invalid address (%x)", va);
+ return (0);
+}
+
+int
+_kvm_kvatop(kd, va, pa)
+ kvm_t *kd;
+ u_long va;
+ u_long *pa;
+{
+ return (_kvm_vatop(kd, (u_long)kd->vmst->Sysseg, va, pa));
+}
+
+/*
+ * Translate a user virtual address to a physical address.
+ */
+int
+_kvm_uvatop(kd, p, va, pa)
+ kvm_t *kd;
+ const struct proc *p;
+ u_long va;
+ u_long *pa;
+{
+ register struct vmspace *vms = p->p_vmspace;
+ int kva;
+
+ /*
+ * If this is a live kernel we just look it up in the kernel
+ * virtually allocated flat 4mb page table (i.e. let the kernel
+ * do the table walk). In this way, we avoid needing to know
+ * the MMU type.
+ */
+ if (ISALIVE(kd)) {
+ struct pte *ptab;
+ int pte, offset;
+
+ kva = (int)&vms->vm_pmap.pm_ptab;
+ if (KREAD(kd, kva, &ptab)) {
+ _kvm_err(kd, 0, "invalid address (%x)", va);
+ return (0);
+ }
+ kva = (int)&ptab[btop(va)];
+ if (KREAD(kd, kva, &pte) || (pte & PG_V) == 0) {
+ _kvm_err(kd, 0, "invalid address (%x)", va);
+ return (0);
+ }
+ offset = va & PGOFSET;
+ *pa = (pte & PG_FRAME) | offset;
+ return (NBPG - offset);
+ }
+ /*
+ * Otherwise, we just walk the table ourself.
+ */
+ kva = (int)&vms->vm_pmap.pm_stab;
+ if (KREAD(kd, kva, &kva)) {
+ _kvm_err(kd, 0, "invalid address (%x)", va);
+ return (0);
+ }
+ return (_kvm_vatop(kd, kva, va, pa));
+}
diff --git a/lib/libkvm/kvm_i386.c b/lib/libkvm/kvm_i386.c
new file mode 100644
index 000000000000..2154a23f3007
--- /dev/null
+++ b/lib/libkvm/kvm_i386.c
@@ -0,0 +1,286 @@
+/*-
+ * Copyright (c) 1989, 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software developed by the Computer Systems
+ * Engineering group at Lawrence Berkeley Laboratory under DARPA contract
+ * BG 91-66 and contributed to Berkeley.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Hp300 machine dependent routines for kvm. Hopefully, the forthcoming
+ * vm code will one day obsolete this module.
+ */
+
+#include <sys/param.h>
+#include <sys/user.h>
+#include <sys/proc.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <nlist.h>
+#include <kvm.h>
+
+#include <vm/vm.h>
+#include <vm/vm_param.h>
+
+#include <limits.h>
+#include <db.h>
+
+#include "kvm_private.h"
+
+#if defined(hp300)
+#include <hp300/hp300/pte.h>
+#endif
+
+#if defined(luna68k)
+#include <luna68k/luna68k/pte.h>
+#endif
+
+#ifndef btop
+#define btop(x) (((unsigned)(x)) >> PGSHIFT) /* XXX */
+#define ptob(x) ((caddr_t)((x) << PGSHIFT)) /* XXX */
+#endif
+
+struct vmstate {
+ u_long lowram;
+ int mmutype;
+ struct ste *Sysseg;
+};
+
+#define KREAD(kd, addr, p)\
+ (kvm_read(kd, addr, (char *)(p), sizeof(*(p))) != sizeof(*(p)))
+
+void
+_kvm_freevtop(kd)
+ kvm_t *kd;
+{
+ if (kd->vmst != 0)
+ free(kd->vmst);
+}
+
+int
+_kvm_initvtop(kd)
+ kvm_t *kd;
+{
+ struct vmstate *vm;
+ struct nlist nlist[4];
+
+ vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
+ if (vm == 0)
+ return (-1);
+ kd->vmst = vm;
+
+ nlist[0].n_name = "_lowram";
+ nlist[1].n_name = "_mmutype";
+ nlist[2].n_name = "_Sysseg";
+ nlist[3].n_name = 0;
+
+ if (kvm_nlist(kd, nlist) != 0) {
+ _kvm_err(kd, kd->program, "bad namelist");
+ return (-1);
+ }
+ vm->Sysseg = 0;
+ if (KREAD(kd, (u_long)nlist[0].n_value, &vm->lowram)) {
+ _kvm_err(kd, kd->program, "cannot read lowram");
+ return (-1);
+ }
+ if (KREAD(kd, (u_long)nlist[1].n_value, &vm->mmutype)) {
+ _kvm_err(kd, kd->program, "cannot read mmutype");
+ return (-1);
+ }
+ if (KREAD(kd, (u_long)nlist[2].n_value, &vm->Sysseg)) {
+ _kvm_err(kd, kd->program, "cannot read segment table");
+ return (-1);
+ }
+ return (0);
+}
+
+static int
+_kvm_vatop(kd, sta, va, pa)
+ kvm_t *kd;
+ struct ste *sta;
+ u_long va;
+ u_long *pa;
+{
+ register struct vmstate *vm;
+ register u_long lowram;
+ register u_long addr;
+ int p, ste, pte;
+ int offset;
+
+ if (ISALIVE(kd)) {
+ _kvm_err(kd, 0, "vatop called in live kernel!");
+ return((off_t)0);
+ }
+ vm = kd->vmst;
+ offset = va & PGOFSET;
+ /*
+ * If we are initializing (kernel segment table pointer not yet set)
+ * then return pa == va to avoid infinite recursion.
+ */
+ if (vm->Sysseg == 0) {
+ *pa = va;
+ return (NBPG - offset);
+ }
+ lowram = vm->lowram;
+ if (vm->mmutype == -2) {
+ struct ste *sta2;
+
+ addr = (u_long)&sta[va >> SG4_SHIFT1];
+ /*
+ * Can't use KREAD to read kernel segment table entries.
+ * Fortunately it is 1-to-1 mapped so we don't have to.
+ */
+ if (sta == vm->Sysseg) {
+ if (lseek(kd->pmfd, (off_t)addr, 0) == -1 ||
+ read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0)
+ goto invalid;
+ } else if (KREAD(kd, addr, &ste))
+ goto invalid;
+ if ((ste & SG_V) == 0) {
+ _kvm_err(kd, 0, "invalid level 1 descriptor (%x)",
+ ste);
+ return((off_t)0);
+ }
+ sta2 = (struct ste *)(ste & SG4_ADDR1);
+ addr = (u_long)&sta2[(va & SG4_MASK2) >> SG4_SHIFT2];
+ /*
+ * Address from level 1 STE is a physical address,
+ * so don't use kvm_read.
+ */
+ if (lseek(kd->pmfd, (off_t)(addr - lowram), 0) == -1 ||
+ read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0)
+ goto invalid;
+ if ((ste & SG_V) == 0) {
+ _kvm_err(kd, 0, "invalid level 2 descriptor (%x)",
+ ste);
+ return((off_t)0);
+ }
+ sta2 = (struct ste *)(ste & SG4_ADDR2);
+ addr = (u_long)&sta2[(va & SG4_MASK3) >> SG4_SHIFT3];
+ } else {
+ addr = (u_long)&sta[va >> SEGSHIFT];
+ /*
+ * Can't use KREAD to read kernel segment table entries.
+ * Fortunately it is 1-to-1 mapped so we don't have to.
+ */
+ if (sta == vm->Sysseg) {
+ if (lseek(kd->pmfd, (off_t)addr, 0) == -1 ||
+ read(kd->pmfd, (char *)&ste, sizeof(ste)) < 0)
+ goto invalid;
+ } else if (KREAD(kd, addr, &ste))
+ goto invalid;
+ if ((ste & SG_V) == 0) {
+ _kvm_err(kd, 0, "invalid segment (%x)", ste);
+ return((off_t)0);
+ }
+ p = btop(va & SG_PMASK);
+ addr = (ste & SG_FRAME) + (p * sizeof(struct pte));
+ }
+ /*
+ * Address from STE is a physical address so don't use kvm_read.
+ */
+ if (lseek(kd->pmfd, (off_t)(addr - lowram), 0) == -1 ||
+ read(kd->pmfd, (char *)&pte, sizeof(pte)) < 0)
+ goto invalid;
+ addr = pte & PG_FRAME;
+ if (pte == PG_NV) {
+ _kvm_err(kd, 0, "page not valid");
+ return (0);
+ }
+ *pa = addr - lowram + offset;
+
+ return (NBPG - offset);
+invalid:
+ _kvm_err(kd, 0, "invalid address (%x)", va);
+ return (0);
+}
+
+int
+_kvm_kvatop(kd, va, pa)
+ kvm_t *kd;
+ u_long va;
+ u_long *pa;
+{
+ return (_kvm_vatop(kd, (u_long)kd->vmst->Sysseg, va, pa));
+}
+
+/*
+ * Translate a user virtual address to a physical address.
+ */
+int
+_kvm_uvatop(kd, p, va, pa)
+ kvm_t *kd;
+ const struct proc *p;
+ u_long va;
+ u_long *pa;
+{
+ register struct vmspace *vms = p->p_vmspace;
+ int kva;
+
+ /*
+ * If this is a live kernel we just look it up in the kernel
+ * virtually allocated flat 4mb page table (i.e. let the kernel
+ * do the table walk). In this way, we avoid needing to know
+ * the MMU type.
+ */
+ if (ISALIVE(kd)) {
+ struct pte *ptab;
+ int pte, offset;
+
+ kva = (int)&vms->vm_pmap.pm_ptab;
+ if (KREAD(kd, kva, &ptab)) {
+ _kvm_err(kd, 0, "invalid address (%x)", va);
+ return (0);
+ }
+ kva = (int)&ptab[btop(va)];
+ if (KREAD(kd, kva, &pte) || (pte & PG_V) == 0) {
+ _kvm_err(kd, 0, "invalid address (%x)", va);
+ return (0);
+ }
+ offset = va & PGOFSET;
+ *pa = (pte & PG_FRAME) | offset;
+ return (NBPG - offset);
+ }
+ /*
+ * Otherwise, we just walk the table ourself.
+ */
+ kva = (int)&vms->vm_pmap.pm_stab;
+ if (KREAD(kd, kva, &kva)) {
+ _kvm_err(kd, 0, "invalid address (%x)", va);
+ return (0);
+ }
+ return (_kvm_vatop(kd, kva, va, pa));
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 19:53:50 +0000