initial import of NetBSD tree

1 files changed, 249 insertions, 0 deletions

diff --git a/lib/libkvm/kvm_sparc.c b/lib/libkvm/kvm_sparc.c
new file mode 100644
index 00000000000..c89759e04f4
--- /dev/null
+++ b/lib/libkvm/kvm_sparc.c
@@ -0,0 +1,249 @@
+/*-
+ * Copyright (c) 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_sparc.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Sparc 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 <sys/sysctl.h>
+#include <sys/device.h>
+#include <unistd.h>
+#include <nlist.h>
+#include <kvm.h>
+
+#include <vm/vm.h>
+#include <vm/vm_param.h>
+#include <machine/autoconf.h>
+
+#include <limits.h>
+#include <db.h>
+
+#include "kvm_private.h"
+
+#define MA_SIZE 32 /* XXX */
+struct vmstate {
+	struct {
+		int x_seginval;
+		int x_npmemarr;
+		struct memarr x_pmemarr[MA_SIZE];
+		struct segmap x_segmap_store[NKREG*NSEGRG];
+	} x;
+#define seginval x.x_seginval
+#define npmemarr x.x_npmemarr
+#define pmemarr x.x_pmemarr
+#define segmap_store x.x_segmap_store
+	int *pte;
+};
+#define NPMEG(vm) ((vm)->seginval+1)
+
+static int cputyp = -1;
+
+static int pgshift, nptesg;
+
+#define VA_VPG(va)	(cputyp==CPU_SUN4C ? VA_SUN4C_VPG(va) : VA_SUN4_VPG(va))
+
+static void
+_kvm_mustinit(kd)
+	kvm_t *kd;
+{
+	if (cputyp != -1)
+		return;
+	for (pgshift = 12; (1 << pgshift) != kd->nbpg; pgshift++)
+		;
+	nptesg = NBPSG / kd->nbpg;
+
+#if 1
+	if (cputyp == -1) {
+		if (kd->nbpg == 8192)
+			cputyp = CPU_SUN4;
+		else
+			cputyp = CPU_SUN4C;
+	}
+#endif
+}
+
+void
+_kvm_freevtop(kd)
+	kvm_t *kd;
+{
+	if (kd->vmst != 0) {
+		if (kd->vmst->pte != 0)
+			free(kd->vmst->pte);
+		free(kd->vmst);
+		kd->vmst  = 0;
+	}
+}
+
+/*
+ * Prepare for translation of kernel virtual addresses into offsets
+ * into crash dump files. We use the MMU specific goop written at the
+ * and of crash dump by pmap_dumpmmu().
+ * (note: sun4/sun4c 2-level MMU specific)
+ */
+int
+_kvm_initvtop(kd)
+	kvm_t *kd;
+{
+	register int i;
+	register int off;
+	register struct vmstate *vm;
+	struct stat st;
+	struct nlist nlist[5];
+
+	_kvm_mustinit(kd);
+
+	if ((vm = kd->vmst) == 0) {
+		kd->vmst = vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
+		if (vm == 0)
+			return (-1);
+	}
+
+	if (fstat(kd->pmfd, &st) < 0)
+		return (-1);
+	/*
+	 * Read segment table.
+	 */
+
+	off = st.st_size - roundup(sizeof(vm->x), kd->nbpg);
+	errno = 0;
+	if (lseek(kd->pmfd, (off_t)off, 0) == -1 && errno != 0 || 
+	    read(kd->pmfd, (char *)&vm->x, sizeof(vm->x)) < 0) {
+		_kvm_err(kd, kd->program, "cannot read segment map");
+		return (-1);
+	}
+
+	vm->pte = (int *)_kvm_malloc(kd, NPMEG(vm) * nptesg * sizeof(int));
+	if (vm->pte == 0) {
+		free(kd->vmst);
+		kd->vmst = 0;
+		return (-1);
+	}
+
+	/*
+	 * Read PMEGs.
+	 */
+	off = st.st_size - roundup(sizeof(vm->x), kd->nbpg) -
+	      roundup(NPMEG(vm) * nptesg * sizeof(int), kd->nbpg);
+
+	errno = 0;
+	if (lseek(kd->pmfd, (off_t)off, 0) == -1 && errno != 0 || 
+	    read(kd->pmfd, (char *)vm->pte, NPMEG(vm) * nptesg * sizeof(int)) < 0) {
+		_kvm_err(kd, kd->program, "cannot read PMEG table");
+		return (-1);
+	}
+
+	return (0);
+}
+
+#define VA_OFF(va) (va & (kd->nbpg - 1))
+
+/*
+ * Translate a kernel virtual address to a physical address using the
+ * mapping information in kd->vm.  Returns the result in pa, and returns
+ * the number of bytes that are contiguously available from this 
+ * physical address.  This routine is used only for crashdumps.
+ */
+int
+_kvm_kvatop(kd, va, pa)
+	kvm_t *kd;
+	u_long va;
+	u_long *pa;
+{
+	register int vr, vs, pte, off, nmem;
+	register struct vmstate *vm = kd->vmst;
+	struct regmap *rp;
+	struct segmap *sp;
+	struct memarr *mp;
+
+	_kvm_mustinit(kd);
+
+	if (va < KERNBASE)
+		goto err;
+
+	vr = VA_VREG(va);
+	vs = VA_VSEG(va);
+
+	sp = &vm->segmap_store[(vr-NUREG)*NSEGRG + vs];
+	if (sp->sg_npte == 0)
+		goto err;
+	if (sp->sg_pmeg == vm->seginval)
+		goto err;
+	pte = vm->pte[sp->sg_pmeg * nptesg + VA_VPG(va)];
+	if ((pte & PG_V) != 0) {
+		register long p, dumpoff = 0;
+
+		off = VA_OFF(va);
+		p = (pte & PG_PFNUM) << pgshift;
+		/* Translate (sparse) pfnum to (packed) dump offset */
+		for (mp = vm->pmemarr, nmem = vm->npmemarr; --nmem >= 0; mp++) {
+			if (mp->addr <= p && p < mp->addr + mp->len)
+				break;
+			dumpoff += mp->len;
+		}
+		if (nmem < 0)
+			goto err;
+		*pa = (dumpoff + p - mp->addr) | off;
+		return (kd->nbpg - off);
+	}
+err:
+	_kvm_err(kd, 0, "invalid address (%x)", va);
+	return (0);
+}
+
+#if 0
+static int
+getcputyp()
+{
+	int mib[2];
+	size_t size;
+
+	mib[0] = CTL_HW;
+	mib[1] = HW_CLASS;
+	size = sizeof cputyp;
+	if (sysctl(mib, 2, &cputyp, &size, NULL, 0) == -1)
+		return (-1);
+}
+#endif