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 22 /* 23 * Copyright 2006 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 #ifdef illumos 41 #define FASTTRAPIOC (('m' << 24) | ('r' << 16) | ('f' << 8)) 42 #define FASTTRAPIOC_MAKEPROBE (FASTTRAPIOC | 1) 43 #define FASTTRAPIOC_GETINSTR (FASTTRAPIOC | 2) 44 #else 45 #define FASTTRAPIOC_GETINSTR _IOWR('f', 2, uint8_t) 46 #define FASTTRAPIOC_MAKEPROBE _IO('f', 3) 47 #endif 48 49 typedef enum fasttrap_probe_type { 50 DTFTP_NONE = 0, 51 DTFTP_ENTRY, 52 DTFTP_RETURN, 53 DTFTP_OFFSETS, 54 DTFTP_POST_OFFSETS, 55 DTFTP_IS_ENABLED 56 } fasttrap_probe_type_t; 57 58 typedef struct fasttrap_probe_spec { 59 pid_t ftps_pid; 60 fasttrap_probe_type_t ftps_type; 61 62 char ftps_func[DTRACE_FUNCNAMELEN]; 63 char ftps_mod[DTRACE_MODNAMELEN]; 64 65 uint64_t ftps_pc; 66 uint64_t ftps_size; 67 uint64_t ftps_noffs; 68 uint64_t ftps_offs[1]; 69 } fasttrap_probe_spec_t; 70 71 typedef struct fasttrap_instr_query { 72 uint64_t ftiq_pc; 73 pid_t ftiq_pid; 74 fasttrap_instr_t ftiq_instr; 75 } fasttrap_instr_query_t; 76 77 /* 78 * To support the fasttrap provider from very early in a process's life, 79 * the run-time linker, ld.so.1, has a program header of type PT_SUNWDTRACE 80 * which points to a data object which must be PT_SUNWDTRACE_SIZE bytes. 81 * This structure mimics the fasttrap provider section of the ulwp_t structure. 82 * When the fasttrap provider is changed to require new or different 83 * instructions, the data object in ld.so.1 and the thread initializers in libc 84 * (libc_init() and _thrp_create()) need to be updated to include the new 85 * instructions, and PT_SUNWDTRACE needs to be changed to a new unique number 86 * (while the old value gets assigned something like PT_SUNWDTRACE_1). Since the 87 * linker must be backward compatible with old Solaris releases, it must have 88 * program headers for each of the PT_SUNWDTRACE versions. The kernel's 89 * elfexec() function only has to look for the latest version of the 90 * PT_SUNWDTRACE program header. 91 */ 92 #define PT_SUNWDTRACE_SIZE FASTTRAP_SUNWDTRACE_SIZE 93 94 #ifdef __cplusplus 95 } 96 #endif 97 98 #endif /* _SYS_FASTTRAP_H */ 99