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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
* Portions Copyright 2006-2008 John Birrell jb@freebsd.org
*
* $FreeBSD$
*
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _FBT_H_
#define _FBT_H_
#include "fbt_isa.h"
/*
* fbt_probe is a bit of a misnomer. One of these structures is created for
* each trace point of an FBT probe. A probe might have multiple trace points
* (e.g., a function with multiple return instructions), and different probes
* might have a trace point at the same address (e.g., GNU ifuncs).
*/
typedef struct fbt_probe {
struct fbt_probe *fbtp_hashnext; /* global hash table linkage */
struct fbt_probe *fbtp_tracenext; /* next probe for tracepoint */
struct fbt_probe *fbtp_probenext; /* next tracepoint for probe */
int fbtp_enabled;
fbt_patchval_t *fbtp_patchpoint;
int8_t fbtp_rval;
fbt_patchval_t fbtp_patchval;
fbt_patchval_t fbtp_savedval;
uintptr_t fbtp_roffset;
dtrace_id_t fbtp_id;
const char *fbtp_name;
modctl_t *fbtp_ctl;
int fbtp_loadcnt;
int fbtp_symindx;
} fbt_probe_t;
struct linker_file;
struct linker_symval;
struct trapframe;
int fbt_invop(uintptr_t, struct trapframe *, uintptr_t);
void fbt_patch_tracepoint(fbt_probe_t *, fbt_patchval_t);
int fbt_provide_module_function(struct linker_file *, int,
struct linker_symval *, void *);
int fbt_excluded(const char *name);
extern dtrace_provider_id_t fbt_id;
extern fbt_probe_t **fbt_probetab;
extern int fbt_probetab_mask;
#define FBT_ADDR2NDX(addr) ((((uintptr_t)(addr)) >> 4) & fbt_probetab_mask)
#define FBT_PROBETAB_SIZE 0x8000 /* 32k entries -- 128K total */
#ifdef MALLOC_DECLARE
MALLOC_DECLARE(M_FBT);
#endif
#endif
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