1 /* 2 * CDDL HEADER START 3 * 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. 7 * 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. 12 * 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] 18 * 19 * CDDL HEADER END 20 * 21 * Portions Copyright 2006-2008 John Birrell jb@freebsd.org 22 * 23 * $FreeBSD$ 24 * 25 */ 26 27 /* 28 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 29 * Use is subject to license terms. 30 */ 31 32 #ifndef _FBT_H_ 33 #define _FBT_H_ 34 35 #include "fbt_isa.h" 36 37 #define FBT_ENTRY "entry" 38 #define FBT_RETURN "return" 39 40 /* 41 * fbt_probe is a bit of a misnomer. One of these structures is created for 42 * each trace point of an FBT probe. A probe might have multiple trace points 43 * (e.g., a function with multiple return instructions), and different probes 44 * might have a trace point at the same address (e.g., GNU ifuncs). 45 */ 46 typedef struct fbt_probe { 47 struct fbt_probe *fbtp_hashnext; /* global hash table linkage */ 48 struct fbt_probe *fbtp_tracenext; /* next probe for tracepoint */ 49 struct fbt_probe *fbtp_probenext; /* next tracepoint for probe */ 50 int fbtp_enabled; 51 fbt_patchval_t *fbtp_patchpoint; 52 int8_t fbtp_rval; 53 fbt_patchval_t fbtp_patchval; 54 fbt_patchval_t fbtp_savedval; 55 uintptr_t fbtp_roffset; 56 dtrace_id_t fbtp_id; 57 const char *fbtp_name; 58 modctl_t *fbtp_ctl; 59 int fbtp_loadcnt; 60 int fbtp_symindx; 61 } fbt_probe_t; 62 63 struct linker_file; 64 struct linker_symval; 65 struct trapframe; 66 67 int fbt_invop(uintptr_t, struct trapframe *, uintptr_t); 68 void fbt_patch_tracepoint(fbt_probe_t *, fbt_patchval_t); 69 int fbt_provide_module_function(struct linker_file *, int, 70 struct linker_symval *, void *); 71 int fbt_excluded(const char *name); 72 73 extern dtrace_provider_id_t fbt_id; 74 extern fbt_probe_t **fbt_probetab; 75 extern int fbt_probetab_mask; 76 77 #define FBT_ADDR2NDX(addr) ((((uintptr_t)(addr)) >> 4) & fbt_probetab_mask) 78 #define FBT_PROBETAB_SIZE 0x8000 /* 32k entries -- 128K total */ 79 80 #ifdef MALLOC_DECLARE 81 MALLOC_DECLARE(M_FBT); 82 #endif 83 84 #endif 85