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/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1995-1996 Søren Schmidt
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SYS_IMGACT_ELF_H_
#define _SYS_IMGACT_ELF_H_
#include <machine/elf.h>
#ifdef _KERNEL
#define AUXARGS_ENTRY(pos, id, val) \
{(pos)->a_type = (id); (pos)->a_un.a_val = (val); (pos)++;}
#if (defined(__LP64__) && __ELF_WORD_SIZE == 32)
#define AUXARGS_ENTRY_PTR(pos, id, ptr) \
{(pos)->a_type = (id); (pos)->a_un.a_val = (uintptr_t)(ptr); (pos)++;}
#else
#define AUXARGS_ENTRY_PTR(pos, id, ptr) \
{(pos)->a_type = (id); (pos)->a_un.a_ptr = (ptr); (pos)++;}
#endif
struct image_params;
struct thread;
struct vnode;
struct note_info_list;
struct sbuf;
/*
* Structure used to pass information from the loader to the
* stack fixup routine.
*/
typedef struct {
Elf_Ssize execfd;
Elf_Size phdr;
Elf_Size phent;
Elf_Size phnum;
Elf_Size pagesz;
Elf_Size base;
Elf_Size flags;
Elf_Size entry;
Elf_Word hdr_eflags; /* e_flags field from ehdr */
} __ElfN(Auxargs);
typedef struct {
Elf_Note hdr;
const char * vendor;
int flags;
bool (*trans_osrel)(const Elf_Note *, int32_t *);
#define BN_CAN_FETCH_OSREL 0x0001 /* Deprecated. */
#define BN_TRANSLATE_OSREL 0x0002 /* Use trans_osrel to fetch osrel */
/* after checking the image ABI specification, if needed. */
} Elf_Brandnote;
typedef struct {
int brand;
int machine;
const char *compat_3_brand; /* pre Binutils 2.10 method (FBSD 3) */
const char *interp_path;
struct sysentvec *sysvec;
const char *interp_newpath;
int flags;
Elf_Brandnote *brand_note;
bool (*header_supported)(struct image_params *,
int32_t *, uint32_t *);
/* High 8 bits of flags is private to the ABI */
#define BI_CAN_EXEC_DYN 0x0001
#define BI_BRAND_NOTE 0x0002 /* May have note.ABI-tag section. */
#define BI_BRAND_NOTE_MANDATORY 0x0004 /* Must have note.ABI-tag section. */
#define BI_BRAND_ONLY_STATIC 0x0008 /* Match only interp-less binaries. */
} __ElfN(Brandinfo);
__ElfType(Auxargs);
__ElfType(Brandinfo);
#define MAX_BRANDS 8
#define FREEBSD_ABI_VENDOR "FreeBSD"
#define GNU_ABI_VENDOR "GNU"
typedef void (*outfunc_t)(void *, struct sbuf *, size_t *);
/* Closure for __elfN(size_segments)(). */
struct sseg_closure {
int count; /* Count of writable segments. */
size_t size; /* Total size of all writable segments. */
};
bool __elfN(brand_inuse)(Elf_Brandinfo *entry);
int __elfN(insert_brand_entry)(Elf_Brandinfo *entry);
int __elfN(remove_brand_entry)(Elf_Brandinfo *entry);
int __elfN(freebsd_fixup)(uintptr_t *, struct image_params *);
int __elfN(coredump)(struct thread *, struct vnode *, off_t, int);
size_t __elfN(populate_note)(int, void *, void *, size_t, void **);
int __elfN(freebsd_copyout_auxargs)(struct image_params *, uintptr_t);
void __elfN(puthdr)(struct thread *, void *, size_t, int, size_t, int);
void __elfN(prepare_notes)(struct thread *, struct note_info_list *,
size_t *);
void __elfN(size_segments)(struct thread *, struct sseg_closure *, int);
size_t __elfN(register_note)(struct thread *, struct note_info_list *,
int, outfunc_t, void *);
bool __elfN(parse_notes)(struct image_params *, Elf_Note *, const char *,
const Elf_Phdr *, bool (*)(const Elf_Note *, void *, bool *),
void *);
/* Machine specific function to dump per-thread information. */
void __elfN(dump_thread)(struct thread *, void *, size_t *);
extern int __elfN(fallback_brand);
extern Elf_Brandnote __elfN(freebsd_brandnote);
extern Elf_Brandnote __elfN(kfreebsd_brandnote);
#endif /* _KERNEL */
#endif /* !_SYS_IMGACT_ELF_H_ */
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