| | 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 | #include <sys/fasttrap_isa.h> |
| | 31 | #include <sys/dtrace.h> |
| | 32 | #include <sys/types.h> |
| | 33 | |
| | 34 | #ifdef __cplusplus |
| | 35 | extern "C" { |
| | 36 | #endif |
| | 37 | |
| | 38 | #if !defined(__APPLE__) |
| | 39 | #define FASTTRAPIOC (('m' << 24) | ('r' << 16) | ('f' << 8)) |
| | 40 | #else |
| | 41 | #define FASTTRAPIOC _IO('d', 0) |
| | 42 | #endif /* __APPLE__ */ |
| | 43 | #define FASTTRAPIOC_MAKEPROBE (FASTTRAPIOC | 1) |
| | 44 | #define FASTTRAPIOC_GETINSTR (FASTTRAPIOC | 2) |
| | 45 | |
| | 46 | typedef enum fasttrap_probe_type { |
| | 47 | DTFTP_NONE = 0, |
| | 48 | DTFTP_ENTRY, |
| | 49 | DTFTP_RETURN, |
| | 50 | DTFTP_OFFSETS, |
| | 51 | DTFTP_POST_OFFSETS, |
| | 52 | DTFTP_IS_ENABLED |
| | 53 | } fasttrap_probe_type_t; |
| | 54 | |
| | 55 | #if defined(__APPLE__) |
| | 56 | typedef enum fasttrap_provider_type { |
| | 57 | DTFTP_PROVIDER_NONE = 0, |
| | 58 | DTFTP_PROVIDER_USDT, |
| | 59 | DTFTP_PROVIDER_PID, |
| | 60 | DTFTP_PROVIDER_OBJC, |
| | 61 | DTFTP_PROVIDER_ONESHOT |
| | 62 | } fasttrap_provider_type_t; |
| | 63 | |
| | 64 | /* Moved from fasttrap.c */ |
| | 65 | #define FASTTRAP_PID_NAME "pid" |
| | 66 | #define FASTTRAP_OBJC_NAME "objc" |
| | 67 | #define FASTTRAP_ONESHOT_NAME "oneshot" |
| | 68 | |
| | 69 | #endif |
| | 70 | |
| | 71 | typedef struct fasttrap_probe_spec { |
| | 72 | pid_t ftps_pid; |
| | 73 | #if defined(__APPLE__) |
| | 74 | fasttrap_provider_type_t ftps_provider_type; |
| | 75 | fasttrap_probe_type_t ftps_probe_type; |
| | 76 | #if defined(__arm__) || defined(__arm64__) |
| | 77 | uint32_t ftps_arch_subinfo; // For any additional per probe architecture specific data |
| | 78 | #endif |
| | 79 | #endif |
| | 80 | char ftps_func[DTRACE_FUNCNAMELEN]; |
| | 81 | char ftps_mod[DTRACE_MODNAMELEN]; |
| | 82 | |
| | 83 | #if defined(__APPLE__) |
| | 84 | #if defined(__arm__) || defined(__arm64__) |
| | 85 | // We already have 'padding' from the ftps_arch_subinfo above |
| | 86 | #else |
| | 87 | #if !defined(__LP64__) |
| | 88 | uint32_t pad; /* Explicit pad to keep ILP32 and LP64 lined up. */ |
| | 89 | #endif |
| | 90 | #endif |
| | 91 | #endif |
| | 92 | uint64_t ftps_pc; |
| | 93 | uint64_t ftps_size; |
| | 94 | uint64_t ftps_noffs; |
| | 95 | uint64_t ftps_offs[1]; |
| | 96 | } fasttrap_probe_spec_t; |
| | 97 | |
| | 98 | typedef struct fasttrap_instr_query { |
| | 99 | uint64_t ftiq_pc; |
| | 100 | pid_t ftiq_pid; |
| | 101 | fasttrap_instr_t ftiq_instr; |
| | 102 | } fasttrap_instr_query_t; |
| | 103 | |
| | 104 | /* |
| | 105 | * To support the fasttrap provider from very early in a process's life, |
| | 106 | * the run-time linker, ld.so.1, has a program header of type PT_SUNWDTRACE |
| | 107 | * which points to a data object which must be PT_SUNWDTRACE_SIZE bytes. |
| | 108 | * This structure mimics the fasttrap provider section of the ulwp_t structure. |
| | 109 | * When the fasttrap provider is changed to require new or different |
| | 110 | * instructions, the data object in ld.so.1 and the thread initializers in libc |
| | 111 | * (libc_init() and _thrp_create()) need to be updated to include the new |
| | 112 | * instructions, and PT_SUNWDTRACE needs to be changed to a new unique number |
| | 113 | * (while the old value gets assigned something like PT_SUNWDTRACE_1). Since the |
| | 114 | * linker must be backward compatible with old Solaris releases, it must have |
| | 115 | * program headers for each of the PT_SUNWDTRACE versions. The kernel's |
| | 116 | * elfexec() function only has to look for the latest version of the |
| | 117 | * PT_SUNWDTRACE program header. |
| | 118 | */ |
| | 119 | #define PT_SUNWDTRACE_SIZE FASTTRAP_SUNWDTRACE_SIZE |
| | 120 | |
| | 121 | #ifdef __cplusplus |
| | 122 | } |
| | 123 | #endif |
| | 124 | |
| | 125 | #endif /* _SYS_FASTTRAP_H */ |
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