4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
21 * Portions Copyright 2006-2008 John Birrell jb@freebsd.org
28 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
29 * Use is subject to license terms.
38 * fbt_probe is a bit of a misnomer. One of these structures is created for
39 * each trace point of an FBT probe. A probe might have multiple trace points
40 * (e.g., a function with multiple return instructions), and different probes
41 * might have a trace point at the same address (e.g., GNU ifuncs).
43 typedef struct fbt_probe {
44 struct fbt_probe *fbtp_hashnext; /* global hash table linkage */
45 struct fbt_probe *fbtp_tracenext; /* next probe for tracepoint */
46 struct fbt_probe *fbtp_probenext; /* next tracepoint for probe */
48 fbt_patchval_t *fbtp_patchpoint;
50 fbt_patchval_t fbtp_patchval;
51 fbt_patchval_t fbtp_savedval;
52 uintptr_t fbtp_roffset;
54 const char *fbtp_name;
64 int fbt_invop(uintptr_t, struct trapframe *, uintptr_t);
65 void fbt_patch_tracepoint(fbt_probe_t *, fbt_patchval_t);
66 int fbt_provide_module_function(struct linker_file *, int,
67 struct linker_symval *, void *);
68 int fbt_excluded(const char *name);
70 extern dtrace_provider_id_t fbt_id;
71 extern fbt_probe_t **fbt_probetab;
72 extern int fbt_probetab_mask;
74 #define FBT_ADDR2NDX(addr) ((((uintptr_t)(addr)) >> 4) & fbt_probetab_mask)
75 #define FBT_PROBETAB_SIZE 0x8000 /* 32k entries -- 128K total */
78 MALLOC_DECLARE(M_FBT);