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
104 lines
3.5 KiB
C
104 lines
3.5 KiB
C
/*-
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* Copyright (c) 1995-1996 Søren Schmidt
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* 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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* in this position and unchanged.
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_IMGACT_ELF_H_
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#define _SYS_IMGACT_ELF_H_
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#include <machine/elf.h>
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#ifdef _KERNEL
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#define AUXARGS_ENTRY(pos, id, val) {suword(pos++, id); suword(pos++, val);}
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struct thread;
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/*
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* Structure used to pass infomation from the loader to the
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* stack fixup routine.
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*/
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typedef struct {
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Elf_Ssize execfd;
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Elf_Size phdr;
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Elf_Size phent;
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Elf_Size phnum;
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Elf_Size pagesz;
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Elf_Size base;
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Elf_Size flags;
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Elf_Size entry;
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} __ElfN(Auxargs);
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typedef struct {
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Elf_Note hdr;
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const char * vendor;
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int flags;
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boolean_t (*trans_osrel)(const Elf_Note *, int32_t *);
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#define BN_CAN_FETCH_OSREL 0x0001 /* Deprecated. */
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#define BN_TRANSLATE_OSREL 0x0002 /* Use trans_osrel to fetch osrel */
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/* after checking the image ABI specification, if needed. */
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} Elf_Brandnote;
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typedef struct {
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int brand;
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int machine;
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const char *compat_3_brand; /* pre Binutils 2.10 method (FBSD 3) */
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const char *emul_path;
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const char *interp_path;
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struct sysentvec *sysvec;
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const char *interp_newpath;
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int flags;
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Elf_Brandnote *brand_note;
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boolean_t (*header_supported)(struct image_params *);
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#define BI_CAN_EXEC_DYN 0x0001
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#define BI_BRAND_NOTE 0x0002 /* May have note.ABI-tag section. */
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#define BI_BRAND_NOTE_MANDATORY 0x0004 /* Must have note.ABI-tag section. */
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} __ElfN(Brandinfo);
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__ElfType(Auxargs);
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__ElfType(Brandinfo);
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#define MAX_BRANDS 8
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int __elfN(brand_inuse)(Elf_Brandinfo *entry);
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int __elfN(insert_brand_entry)(Elf_Brandinfo *entry);
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int __elfN(remove_brand_entry)(Elf_Brandinfo *entry);
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int __elfN(freebsd_fixup)(register_t **, struct image_params *);
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int __elfN(coredump)(struct thread *, struct vnode *, off_t, int);
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size_t __elfN(populate_note)(int, void *, void *, size_t, void **);
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/* Machine specific function to dump per-thread information. */
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void __elfN(dump_thread)(struct thread *, void *, size_t *);
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extern int __elfN(fallback_brand);
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extern Elf_Brandnote __elfN(freebsd_brandnote);
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extern Elf_Brandnote __elfN(kfreebsd_brandnote);
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#endif /* _KERNEL */
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#endif /* !_SYS_IMGACT_ELF_H_ */
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