dtrace_data.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* In order to let the DTrace fasttrap provider trace processes before libc
* is initialized, we place this structure in the thread pointer register.
* This is communicated to the kernel (in the elfexec() function) by
* placing the address of this structure in the PT_SUNWDTRACE program header
* with the -zdtrace_data=<object> option to ld.
*
* The fields of the program header are set as follows:
* p_type: PT_SUNWDTRACE
* p_vaddr: address of dtrace_data
* p_memsz: size of dtrace_data
* p_flags: flags of segment dtrace_data is assigned to
* p_paddr: <reserved>
* p_filesz: <reserved>
* p_offset: <reserved>
* p_align: <reserved>
*
* See the comment in fasttrap.h for information on how to safely change
* this data structure and the other places that need to be kept in sync.
*/
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0x9de04000, /* save %g1, %g0, %sp */
0x81e80000, /* restore %g0, %g0, %g0 */
0x91d0203a, /* ta 0x3a */
0x81ca0000, /* return %o0 */
0, 0, /* self pointer (must be zero) */
0, 0,
0, 0, 0, 0, 0, 0, 0, 0
};