/*
* Copyright (C) 2008-2009 Michal Simek <[email protected]>
* Copyright (C) 2008-2009 PetaLogix
* Copyright (C) 2006 Atmark Techno, Inc.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/

#ifndef _UAPI_ASM_MICROBLAZE_ELF_H
#define _UAPI_ASM_MICROBLAZE_ELF_H

/*
* Note there is no "official" ELF designation for Microblaze.
* I've snaffled the value from the microblaze binutils source code
* /binutils/microblaze/include/elf/microblaze.h
*/
#define EM_MICROBLAZE 189
#define EM_MICROBLAZE_OLD 0xbaab
#define ELF_ARCH EM_MICROBLAZE

/*
* This is used to ensure we don't load something for the wrong architecture.
*/
#define elf_check_arch(x) ((x)->e_machine == EM_MICROBLAZE \
|| (x)->e_machine == EM_MICROBLAZE_OLD)

/*
* These are used to set parameters in the core dumps.
*/
#define ELF_CLASS ELFCLASS32

#ifndef __uClinux__

/*
* ELF register definitions..
*/

#include <asm/ptrace.h>
#include <asm/byteorder.h>

#ifndef ELF_GREG_T
#define ELF_GREG_T
typedef unsigned long elf_greg_t;
#endif

#ifndef ELF_NGREG
#define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t))
#endif

#ifndef ELF_GREGSET_T
#define ELF_GREGSET_T
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
#endif

#ifndef ELF_FPREGSET_T
#define ELF_FPREGSET_T

/* TBD */
#define ELF_NFPREG 33 /* includes fsr */
typedef unsigned long elf_fpreg_t;
typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];

/* typedef struct user_fpu_struct elf_fpregset_t; */
#endif

/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
* use of this is to invoke "./ld.so someprog" to test out a new version of
* the loader. We need to make sure that it is out of the way of the program
* that it will "exec", and that there is sufficient room for the brk.
*/

#define ELF_ET_DYN_BASE (0x08000000)

#ifdef __MICROBLAZEEL__
#define ELF_DATA ELFDATA2LSB
#else
#define ELF_DATA ELFDATA2MSB
#endif

#define ELF_EXEC_PAGESIZE PAGE_SIZE


#define ELF_CORE_COPY_REGS(_dest, _regs) \
memcpy((char *) &_dest, (char *) _regs, \
sizeof(struct pt_regs));

/* This yields a mask that user programs can use to figure out what
* instruction set this CPU supports. This could be done in user space,
* but it's not easy, and we've already done it here.
*/
#define ELF_HWCAP (0)

/* This yields a string that ld.so will use to load implementation
* specific libraries for optimization. This is more specific in
* intent than poking at uname or /proc/cpuinfo.

* For the moment, we have only optimizations for the Intel generations,
* but that could change...
*/
#define ELF_PLATFORM (NULL)

/* Added _f parameter. Is this definition correct: TBD */
#define ELF_PLAT_INIT(_r, _f) \
do { \
_r->r0 = _r->r1 = _r->r2 = _r->r3 = \
_r->r4 = _r->r5 = _r->r6 = _r->r7 = \
_r->r8 = _r->r9 = _r->r10 = _r->r11 = \
_r->r12 = _r->r13 = _r->r14 = _r->r15 = \
_r->r16 = _r->r17 = _r->r18 = _r->r19 = \
_r->r20 = _r->r21 = _r->r22 = _r->r23 = \
_r->r24 = _r->r25 = _r->r26 = _r->r27 = \
_r->r28 = _r->r29 = _r->r30 = _r->r31 = \
0; \
} while (0)


#endif /* __uClinux__ */

#endif /* _UAPI_ASM_MICROBLAZE_ELF_H */