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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_FASTTRAP_H 28 #define _SYS_FASTTRAP_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/fasttrap_isa.h> 33 #include <sys/dtrace.h> 34 #include <sys/types.h> 35 36 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 #define FASTTRAPIOC (('m' << 24) | ('r' << 16) | ('f' << 8)) 41 #define FASTTRAPIOC_MAKEPROBE (FASTTRAPIOC | 1) 42 #define FASTTRAPIOC_GETINSTR (FASTTRAPIOC | 2) 43 44 typedef enum fasttrap_probe_type { 45 DTFTP_NONE = 0, 46 DTFTP_ENTRY, 47 DTFTP_RETURN, 48 DTFTP_OFFSETS, 49 DTFTP_POST_OFFSETS 50 } fasttrap_probe_type_t; 51 52 typedef struct fasttrap_probe_spec { 53 pid_t ftps_pid; 54 fasttrap_probe_type_t ftps_type; 55 56 char ftps_func[DTRACE_FUNCNAMELEN]; 57 char ftps_mod[DTRACE_MODNAMELEN]; 58 59 uint64_t ftps_pc; 60 uint64_t ftps_size; 61 uint64_t ftps_noffs; 62 uint64_t ftps_offs[1]; 63 } fasttrap_probe_spec_t; 64 65 typedef struct fasttrap_instr_query { 66 uint64_t ftiq_pc; 67 pid_t ftiq_pid; 68 fasttrap_instr_t ftiq_instr; 69 } fasttrap_instr_query_t; 70 71 /* 72 * To support the fasttrap provider from very early in a process's life, 73 * the run-time linker, ld.so.1, has a program header of type PT_SUNWDTRACE 74 * which points to a data object which must be PT_SUNWDTRACE_SIZE bytes. 75 * This structure mimics the fasttrap provider section of the ulwp_t structure. 76 * When the fasttrap provider is changed to require new or different 77 * instructions, the data object in ld.so.1 and the thread initializers in libc 78 * (libc_init() and _thrp_create()) need to be updated to include the new 79 * instructions, and PT_SUNWDTRACE needs to be changed to a new unique number 80 * (while the old value gets assigned something like PT_SUNWDTRACE_1). Since the 81 * linker must be backward compatible with old Solaris releases, it must have 82 * program headers for each of the PT_SUNWDTRACE versions. The kernel's 83 * elfexec() function only has to look for the latest version of the 84 * PT_SUNWDTRACE program header. 85 */ 86 #define PT_SUNWDTRACE_SIZE FASTTRAP_SUNWDTRACE_SIZE 87 88 #ifdef __cplusplus 89 } 90 #endif 91 92 #endif /* _SYS_FASTTRAP_H */ 93