/**
 * Copyright (c) 2012 Anup Patel.
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * @file arch_elf.h
 * @author Anup Patel (anup@brainfault.org)
 * @brief arch specific ELF routines
 */
#ifndef _ARCH_ELF_H__
#define _ARCH_ELF_H__

#include <vmm_types.h>

/* ARM elf specific declarations */

#define EF_ARM_EABI_MASK	0xff000000
#define EF_ARM_EABI_UNKNOWN	0x00000000
#define EF_ARM_EABI_VER1	0x01000000
#define EF_ARM_EABI_VER2	0x02000000
#define EF_ARM_EABI_VER3	0x03000000
#define EF_ARM_EABI_VER4	0x04000000
#define EF_ARM_EABI_VER5	0x05000000

#define EF_ARM_BE8		0x00800000	/* ABI 4,5 */
#define EF_ARM_LE8		0x00400000	/* ABI 4,5 */
#define EF_ARM_MAVERICK_FLOAT	0x00000800	/* ABI 0 */
#define EF_ARM_VFP_FLOAT	0x00000400	/* ABI 0 */
#define EF_ARM_SOFT_FLOAT	0x00000200	/* ABI 0 */
#define EF_ARM_OLD_ABI		0x00000100	/* ABI 0 */
#define EF_ARM_NEW_ABI		0x00000080	/* ABI 0 */
#define EF_ARM_ALIGN8		0x00000040	/* ABI 0 */
#define EF_ARM_PIC		0x00000020	/* ABI 0 */
#define EF_ARM_MAPSYMSFIRST	0x00000010	/* ABI 2 */
#define EF_ARM_APCS_FLOAT	0x00000010	/* ABI 0, floats in fp regs */
#define EF_ARM_DYNSYMSUSESEGIDX	0x00000008	/* ABI 2 */
#define EF_ARM_APCS_26		0x00000008	/* ABI 0 */
#define EF_ARM_SYMSARESORTED	0x00000004	/* ABI 1,2 */
#define EF_ARM_INTERWORK	0x00000004	/* ABI 0 */
#define EF_ARM_HASENTRY		0x00000002	/* All */
#define EF_ARM_RELEXEC		0x00000001	/* All */

#define R_ARM_NONE		0
#define R_ARM_PC24		1
#define R_ARM_ABS32		2
#define R_ARM_CALL		28
#define R_ARM_JUMP24		29
#define R_ARM_V4BX		40
#define R_ARM_PREL31		42
#define R_ARM_MOVW_ABS_NC	43
#define R_ARM_MOVT_ABS		44

#define R_ARM_THM_CALL		10
#define R_ARM_THM_JUMP24	30
#define R_ARM_THM_MOVW_ABS_NC	47
#define R_ARM_THM_MOVT_ABS	48

/*
 * These are used to set parameters in the core dumps.
 */
#define ELF_CLASS	ELFCLASS32
#ifdef __ARMEB__
#define ELF_DATA	ELFDATA2MSB
#else
#define ELF_DATA	ELFDATA2LSB
#endif
#define ELF_ARCH	EM_ARM

struct elf32_hdr;
struct elf32_shdr;

int arch_elf_check_hdr(const struct elf32_hdr *x);

int arch_elf_apply_relocate(struct elf32_shdr *sechdrs, 
			    const char *strtab, 
			    unsigned int symindex,
			    unsigned int relindex, 
			    struct vmm_module *mod);

int arch_elf_apply_relocate_add(struct elf32_shdr *sechdrs, 
				const char *strtab,
				unsigned int symindex, 
				unsigned int relsec, 
				struct vmm_module *mod);

#endif
