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180e57e5c7
- Dump an NT_X86_XSTATE note if XSAVE is in use. This note is designed to match what Linux does in that 1) it dumps the entire XSAVE area including the fxsave state, and 2) it stashes a copy of the current xsave mask in the unused padding between the fxsave state and the xstate header at the same location used by Linux. - Teach readelf() to recognize NT_X86_XSTATE notes. - Change PT_GET/SETXSTATE to take the entire XSAVE state instead of only the extra portion. This avoids having to always make two ptrace() calls to get or set the full XSAVE state. - Add a PT_GET_XSTATE_INFO which returns the length of the current XSTATE save area (so the size of the buffer needed for PT_GETXSTATE) and the current XSAVE mask (%xcr0). Differential Revision: https://reviews.freebsd.org/D1193 Reviewed by: kib MFC after: 2 weeks
62 lines
2.3 KiB
C
62 lines
2.3 KiB
C
/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ptrace.h 8.1 (Berkeley) 6/11/93
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* $FreeBSD$
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*/
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#ifndef _MACHINE_PTRACE_H_
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#define _MACHINE_PTRACE_H_
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#define __HAVE_PTRACE_MACHDEP
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/*
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* On amd64 (PT_FIRSTMACH + 0) and (PT_FIRSTMACH + 1) are old values for
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* PT_GETXSTATE_OLD and PT_SETXSTATE_OLD. They should not be (re)used.
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*/
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#ifdef __i386__
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#define PT_GETXMMREGS (PT_FIRSTMACH + 0)
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#define PT_SETXMMREGS (PT_FIRSTMACH + 1)
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#endif
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#ifdef _KERNEL
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#define PT_GETXSTATE_OLD (PT_FIRSTMACH + 2)
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#define PT_SETXSTATE_OLD (PT_FIRSTMACH + 3)
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#endif
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#define PT_GETXSTATE_INFO (PT_FIRSTMACH + 4)
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#define PT_GETXSTATE (PT_FIRSTMACH + 5)
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#define PT_SETXSTATE (PT_FIRSTMACH + 6)
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/* Argument structure for PT_GETXSTATE_INFO. */
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struct ptrace_xstate_info {
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uint64_t xsave_mask;
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uint32_t xsave_len;
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};
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#endif
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