126 lines
3.7 KiB
C
126 lines
3.7 KiB
C
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#ifndef _SYS_FASTTRAP_H
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#define _SYS_FASTTRAP_H
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#include <sys/fasttrap_isa.h>
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#include <sys/dtrace.h>
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if !defined(__APPLE__)
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#define FASTTRAPIOC (('m' << 24) | ('r' << 16) | ('f' << 8))
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#else
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#define FASTTRAPIOC _IO('d', 0)
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#endif /* __APPLE__ */
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#define FASTTRAPIOC_MAKEPROBE (FASTTRAPIOC | 1)
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#define FASTTRAPIOC_GETINSTR (FASTTRAPIOC | 2)
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typedef enum fasttrap_probe_type {
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DTFTP_NONE = 0,
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DTFTP_ENTRY,
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DTFTP_RETURN,
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DTFTP_OFFSETS,
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DTFTP_POST_OFFSETS,
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DTFTP_IS_ENABLED
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} fasttrap_probe_type_t;
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#if defined(__APPLE__)
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typedef enum fasttrap_provider_type {
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DTFTP_PROVIDER_NONE = 0,
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DTFTP_PROVIDER_USDT,
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DTFTP_PROVIDER_PID,
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DTFTP_PROVIDER_OBJC,
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DTFTP_PROVIDER_ONESHOT
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} fasttrap_provider_type_t;
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/* Moved from fasttrap.c */
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#define FASTTRAP_PID_NAME "pid"
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#define FASTTRAP_OBJC_NAME "objc"
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#define FASTTRAP_ONESHOT_NAME "oneshot"
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#endif
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typedef struct fasttrap_probe_spec {
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pid_t ftps_pid;
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#if defined(__APPLE__)
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fasttrap_provider_type_t ftps_provider_type;
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fasttrap_probe_type_t ftps_probe_type;
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#if defined(__arm__) || defined(__arm64__)
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uint32_t ftps_arch_subinfo; // For any additional per probe architecture specific data
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#endif
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#endif
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char ftps_func[DTRACE_FUNCNAMELEN];
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char ftps_mod[DTRACE_MODNAMELEN];
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#if defined(__APPLE__)
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#if defined(__arm__) || defined(__arm64__)
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// We already have 'padding' from the ftps_arch_subinfo above
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#else
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#if !defined(__LP64__)
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uint32_t pad; /* Explicit pad to keep ILP32 and LP64 lined up. */
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#endif
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#endif
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#endif
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uint64_t ftps_pc;
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uint64_t ftps_size;
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uint64_t ftps_noffs;
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uint64_t ftps_offs[1];
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} fasttrap_probe_spec_t;
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typedef struct fasttrap_instr_query {
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uint64_t ftiq_pc;
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pid_t ftiq_pid;
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fasttrap_instr_t ftiq_instr;
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} fasttrap_instr_query_t;
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/*
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* To support the fasttrap provider from very early in a process's life,
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* the run-time linker, ld.so.1, has a program header of type PT_SUNWDTRACE
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* which points to a data object which must be PT_SUNWDTRACE_SIZE bytes.
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* This structure mimics the fasttrap provider section of the ulwp_t structure.
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* When the fasttrap provider is changed to require new or different
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* instructions, the data object in ld.so.1 and the thread initializers in libc
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* (libc_init() and _thrp_create()) need to be updated to include the new
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* instructions, and PT_SUNWDTRACE needs to be changed to a new unique number
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* (while the old value gets assigned something like PT_SUNWDTRACE_1). Since the
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* linker must be backward compatible with old Solaris releases, it must have
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* program headers for each of the PT_SUNWDTRACE versions. The kernel's
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* elfexec() function only has to look for the latest version of the
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* PT_SUNWDTRACE program header.
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*/
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#define PT_SUNWDTRACE_SIZE FASTTRAP_SUNWDTRACE_SIZE
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_FASTTRAP_H */
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