libkvm for sparc64. Only works for kernel memory so far.

1 files changed, 157 insertions, 0 deletions

diff --git a/lib/libkvm/kvm_sparc64.c b/lib/libkvm/kvm_sparc64.c
new file mode 100644
index 0000000..64f699f
--- /dev/null
+++ b/lib/libkvm/kvm_sparc64.c
@@ -0,0 +1,157 @@
+/*-
+ * 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.
+ *
+ *	from: FreeBSD: src/lib/libkvm/kvm_i386.c,v 1.15 2001/10/10 17:48:43
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#if defined(LIBC_SCCS) && !defined(lint)
+#if 0
+static char sccsid[] = "@(#)kvm_hp300.c	8.1 (Berkeley) 6/4/93";
+#endif
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * sparc64 machine dependent routines for kvm.
+ */
+
+#include <sys/param.h>
+#include <sys/user.h>
+#include <sys/proc.h>
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <nlist.h>
+#include <kvm.h>
+
+#include <vm/vm.h>
+#include <vm/vm_param.h>
+
+#include <machine/tte.h>
+#include <machine/tlb.h>
+#include <machine/tsb.h>
+
+#include <limits.h>
+
+#include "kvm_private.h"
+
+#ifndef btop
+#define	btop(x)		(sparc64_btop(x))
+#define	ptob(x)		(sparc64_ptob(x))
+#endif
+
+struct vmstate {
+	vm_offset_t	vm_tsb;
+};
+
+void
+_kvm_freevtop(kvm_t *kd)
+{
+	if (kd->vmst != 0) {
+		free(kd->vmst);
+	}
+}
+
+int
+_kvm_initvtop(kvm_t *kd)
+{
+	struct nlist nlist[2];
+	struct vmstate *vm;
+	u_long pa;
+
+	vm = (struct vmstate *)_kvm_malloc(kd, sizeof(*vm));
+	if (vm == NULL) {
+		_kvm_err(kd, kd->program, "cannot allocate vm");
+		return (-1);
+	}
+	kd->vmst = vm;
+	vm->vm_tsb = 0;
+
+	nlist[0].n_name = "tsb_kernel_phys";
+	nlist[1].n_name = 0;
+
+	if (kvm_nlist(kd, nlist) != 0) {
+		_kvm_err(kd, kd->program, "bad namelist");
+		return (-1);
+	}
+	if (kvm_read(kd, nlist[0].n_value, &pa, sizeof(pa)) != sizeof(pa)) {
+		_kvm_err(kd, kd->program, "cannot read tsb_kernel_phys");
+		return (-1);
+	}
+	vm->vm_tsb = pa;
+	return (0);
+}
+
+static int
+_kvm_vatop(kvm_t *kd, u_long va, u_long *pa)
+{
+	struct vmstate *vm;
+	struct stte st;
+	u_long offset;
+	u_long st_pa;
+	u_long vpn;
+
+	vpn = btop(va);
+	offset = va & PAGE_MASK;
+	st_pa = kd->vmst->vm_tsb + ((vpn & TSB_KERNEL_MASK) << STTE_SHIFT);
+
+	/* XXX This has to be a physical address read, kvm_read is virtual */
+	if (lseek(kd->pmfd, st_pa, 0) == -1) {
+		_kvm_syserr(kd, kd->program, "_kvm_vatop: lseek");
+		goto invalid;
+	}
+	if (read(kd->pmfd, &st, sizeof(st)) != sizeof(st)) {
+		_kvm_syserr(kd, kd->program, "_kvm_vatop: read");
+		goto invalid;
+	}
+	if (!tte_match(st.st_tte, va))
+		goto invalid;
+
+	*pa = TD_PA(st.st_tte.tte_data) + offset;
+	return (PAGE_SIZE - offset);
+
+invalid:
+	_kvm_err(kd, 0, "invalid address (%x)", va);
+	return (0);
+}
+
+int
+_kvm_kvatop(kvm_t *kd, u_long va, u_long *pa)
+{
+	return (_kvm_vatop(kd, va, pa));
+}