Annotation of src/lib/libkvm/kvm_hppa.c, Revision 1.2
1.2 ! agc 1: /* $NetBSD: kvm_hppa.c,v 1.1 2002/06/06 20:31:25 fredette Exp $ */
1.1 fredette 2:
3: /*-
4: * Copyright (c) 1989, 1992, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * This code is derived from software developed by the Computer Systems
8: * Engineering group at Lawrence Berkeley Laboratory under DARPA contract
9: * BG 91-66 and contributed to Berkeley.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
1.2 ! agc 19: * 3. Neither the name of the University nor the names of its contributors
1.1 fredette 20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: #include <sys/cdefs.h>
37: #if defined(LIBC_SCCS) && !defined(lint)
38: #if 0
39: static char sccsid[] = "@(#)kvm_hp300.c 8.1 (Berkeley) 6/4/93";
40: #else
1.2 ! agc 41: __RCSID("$NetBSD: kvm_hppa.c,v 1.1 2002/06/06 20:31:25 fredette Exp $");
1.1 fredette 42: #endif
43: #endif /* LIBC_SCCS and not lint */
44:
45: /*
46: * hppa machine dependent routines for kvm.
47: * XXX fredette - largely unimplemented so far. what is here
48: * is lifted and disabled.
49: */
50:
51: #include <sys/param.h>
52: #include <sys/user.h>
53: #include <sys/proc.h>
54: #include <sys/stat.h>
55: #include <sys/kcore.h>
56: #include <machine/kcore.h>
57: #include <stdlib.h>
58: #include <unistd.h>
59: #include <nlist.h>
60: #include <kvm.h>
61:
62: #include <uvm/uvm_extern.h>
63:
64: #include <limits.h>
65: #include <db.h>
66:
67: #include "kvm_private.h"
68:
69: #include <machine/pmap.h>
70: #include <machine/pte.h>
71: #include <machine/vmparam.h>
72:
73: #ifndef btop
74: #define btop(x) (((unsigned)(x)) >> PGSHIFT) /* XXX */
75: #define ptob(x) ((caddr_t)((x) << PGSHIFT)) /* XXX */
76: #endif
77:
78: void
79: _kvm_freevtop(kd)
80: kvm_t *kd;
81: {
82:
83: /* Not actually used for anything right now, but safe. */
84: if (kd->vmst != 0)
85: free(kd->vmst);
86: }
87:
88: /*ARGSUSED*/
89: int
90: _kvm_initvtop(kd)
91: kvm_t *kd;
92: {
93:
94: return (0);
95: }
96:
97: /*
98: * Translate a kernel virtual address to a physical address.
99: */
100: int
101: _kvm_kvatop(kd, va, pa)
102: kvm_t *kd;
103: u_long va;
104: u_long *pa;
105: {
106: #if 0
107: cpu_kcore_hdr_t *cpu_kh;
108: u_long page_off;
109: pd_entry_t pde;
110: pt_entry_t pte;
111: u_long pde_pa, pte_pa;
112: #endif
113:
114: if (ISALIVE(kd)) {
115: _kvm_err(kd, 0, "vatop called in live kernel!");
116: return (0);
117: }
118:
119: _kvm_syserr(kd, 0, "could not read PTE");
120:
121: #if 0
122: cpu_kh = kd->cpu_data;
123: page_off = va & PGOFSET;
124:
125: /*
126: * Find and read the page directory entry.
127: */
128: pde_pa = cpu_kh->ptdpaddr + (pdei(va) * sizeof(pd_entry_t));
129: if (pread(kd->pmfd, (void *)&pde, sizeof(pde),
130: _kvm_pa2off(kd, pde_pa)) != sizeof(pde)) {
131: _kvm_syserr(kd, 0, "could not read PDE");
132: goto lose;
133: }
134:
135: /*
136: * Find and read the page table entry.
137: */
138: if ((pde & PG_V) == 0) {
139: _kvm_err(kd, 0, "invalid translation (invalid PDE)");
140: goto lose;
141: }
142: pte_pa = (pde & PG_FRAME) + (ptei(va) * sizeof(pt_entry_t));
143: if (pread(kd->pmfd, (void *) &pte, sizeof(pte),
144: _kvm_pa2off(kd, pte_pa)) != sizeof(pte)) {
145: _kvm_syserr(kd, 0, "could not read PTE");
146: goto lose;
147: }
148:
149: /*
150: * Validate the PTE and return the physical address.
151: */
152: if ((pte & PG_V) == 0) {
153: _kvm_err(kd, 0, "invalid translation (invalid PTE)");
154: goto lose;
155: }
156: *pa = (pte & PG_FRAME) + page_off;
157: return (int)(NBPG - page_off);
158:
159: lose:
160: #endif
161: *pa = (u_long)~0L;
162: return (0);
163: }
164:
165: /*
166: * Translate a physical address to a file-offset in the crash dump.
167: */
168: off_t
169: _kvm_pa2off(kd, pa)
170: kvm_t *kd;
171: u_long pa;
172: {
173: #if 0
174: cpu_kcore_hdr_t *cpu_kh;
175: phys_ram_seg_t *ramsegs;
176: off_t off;
177: int i;
178:
179: cpu_kh = kd->cpu_data;
180: ramsegs = (void *)((char *)(void *)cpu_kh + ALIGN(sizeof *cpu_kh));
181:
182: off = 0;
183: for (i = 0; i < cpu_kh->nmemsegs; i++) {
184: if (pa >= ramsegs[i].start &&
185: (pa - ramsegs[i].start) < ramsegs[i].size) {
186: off += (pa - ramsegs[i].start);
187: break;
188: }
189: off += ramsegs[i].size;
190: }
191:
192: return (kd->dump_off + off);
193: #endif
194: return 0;
195: }
196:
197: /*
198: * Machine-dependent initialization for ALL open kvm descriptors,
199: * not just those for a kernel crash dump. Some architectures
200: * have to deal with these NOT being constants! (i.e. m68k)
201: */
202: int
203: _kvm_mdopen(kd)
204: kvm_t *kd;
205: {
206:
207: kd->usrstack = USRSTACK;
208: kd->min_uva = VM_MIN_ADDRESS;
209: kd->max_uva = VM_MAXUSER_ADDRESS;
210:
211: return (0);
212: }
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