HardenedBSD/sys/arm/include/elf.h
Konstantin Belousov f6bb885ff6 Move the fixed base for PIE loading on arm.
Existing base causes conflicts for direct execution of ld-elf.so.1
because default linking base for non-PIE binaries is 0x10000.

Reported and tested by:	Mark Millard <marklmi26-fbsd@yahoo.com>
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2018-11-04 19:11:32 +00:00

123 lines
4.1 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2001 David E. O'Brien
* Copyright (c) 1996-1997 John D. Polstra.
* 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.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#ifndef _MACHINE_ELF_H_
#define _MACHINE_ELF_H_ 1
/*
* EABI ELF definitions for the StrongARM architecture.
* See "ARM ELF", document no. `SWS ESPC 0003 A-08' for details.
*/
#include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */
#define __ELF_WORD_SIZE 32 /* Used by <sys/elf_generic.h> */
#include <sys/elf_generic.h>
typedef struct { /* Auxiliary vector entry on initial stack */
int a_type; /* Entry type. */
union {
long a_val; /* Integer value. */
void *a_ptr; /* Address. */
void (*a_fcn)(void); /* Function pointer (not used). */
} a_un;
} Elf32_Auxinfo;
__ElfType(Auxinfo);
#define ELF_ARCH EM_ARM
#define ELF_MACHINE_OK(x) ((x) == EM_ARM)
/*
* Relocation types.
*/
#define R_ARM_COUNT 33 /* Count of defined relocation types. */
/* Define "machine" characteristics */
#define ELF_TARG_CLASS ELFCLASS32
#ifdef __ARMEB__
#define ELF_TARG_DATA ELFDATA2MSB
#else
#define ELF_TARG_DATA ELFDATA2LSB
#endif
#define ELF_TARG_MACH EM_ARM
#define ELF_TARG_VER 1
/* Defines specific for arm headers */
#define EF_ARM_EABI_VERSION(x) (((x) & EF_ARM_EABIMASK) >> 24)
#define EF_ARM_EABI_VERSION_UNKNOWN 0
#define EF_ARM_EABI_FREEBSD_MIN 4
/*
* Magic number for the elf trampoline, chosen wisely to be an immediate
* value.
*/
#define MAGIC_TRAMP_NUMBER 0x5c000003
#define ET_DYN_LOAD_ADDR 0x500000
/* Flags passed in AT_HWCAP. */
#define HWCAP_SWP 0x00000001 /* Unsupported, never set. */
#define HWCAP_HALF 0x00000002 /* Always set. */
#define HWCAP_THUMB 0x00000004
#define HWCAP_26BIT 0x00000008 /* Unsupported, never set. */
#define HWCAP_FAST_MULT 0x00000010 /* Always set. */
#define HWCAP_FPA 0x00000020 /* Unsupported, never set. */
#define HWCAP_VFP 0x00000040
#define HWCAP_EDSP 0x00000080 /* Always set for ARMv6+. */
#define HWCAP_JAVA 0x00000100 /* Unsupported, never set. */
#define HWCAP_IWMMXT 0x00000200 /* Unsupported, never set. */
#define HWCAP_CRUNCH 0x00000400 /* Unsupported, never set. */
#define HWCAP_THUMBEE 0x00000800
#define HWCAP_NEON 0x00001000
#define HWCAP_VFPv3 0x00002000
#define HWCAP_VFPv3D16 0x00004000
#define HWCAP_TLS 0x00008000 /* Always set for ARMv6+. */
#define HWCAP_VFPv4 0x00010000
#define HWCAP_IDIVA 0x00020000
#define HWCAP_IDIVT 0x00040000
#define HWCAP_VFPD32 0x00080000
#define HWCAP_IDIV (HWCAP_IDIVA | HWCAP_IDIVT)
#define HWCAP_LPAE 0x00100000
#define HWCAP_EVTSTRM 0x00200000 /* Not implemented yet. */
/* Flags passed in AT_HWCAP2. */
#define HWCAP2_AES 0x00000001
#define HWCAP2_PMULL 0x00000002
#define HWCAP2_SHA1 0x00000004
#define HWCAP2_SHA2 0x00000008
#define HWCAP2_CRC32 0x00000010
#endif /* !_MACHINE_ELF_H_ */