/arch/microblaze/include/asm/elf.h

  1/*
  2 * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
  3 * Copyright (C) 2008-2009 PetaLogix
  4 * Copyright (C) 2006 Atmark Techno, Inc.
  5 *
  6 * This file is subject to the terms and conditions of the GNU General Public
  7 * License. See the file "COPYING" in the main directory of this archive
  8 * for more details.
  9 */
 10
 11#ifndef _ASM_MICROBLAZE_ELF_H
 12#define _ASM_MICROBLAZE_ELF_H
 13
 14/*
 15 * Note there is no "official" ELF designation for Microblaze.
 16 * I've snaffled the value from the microblaze binutils source code
 17 * /binutils/microblaze/include/elf/microblaze.h
 18 */
 19#define EM_XILINX_MICROBLAZE	0xbaab
 20#define ELF_ARCH		EM_XILINX_MICROBLAZE
 21
 22/*
 23 * This is used to ensure we don't load something for the wrong architecture.
 24 */
 25#define elf_check_arch(x)	((x)->e_machine == EM_XILINX_MICROBLAZE)
 26
 27/*
 28 * These are used to set parameters in the core dumps.
 29 */
 30#define ELF_CLASS	ELFCLASS32
 31
 32#ifndef __uClinux__
 33
 34/*
 35 * ELF register definitions..
 36 */
 37
 38#include <asm/ptrace.h>
 39#include <asm/byteorder.h>
 40
 41#ifndef ELF_GREG_T
 42#define ELF_GREG_T
 43typedef unsigned long elf_greg_t;
 44#endif
 45
 46#ifndef ELF_NGREG
 47#define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t))
 48#endif
 49
 50#ifndef ELF_GREGSET_T
 51#define ELF_GREGSET_T
 52typedef elf_greg_t elf_gregset_t[ELF_NGREG];
 53#endif
 54
 55#ifndef ELF_FPREGSET_T
 56#define ELF_FPREGSET_T
 57
 58/* TBD */
 59#define ELF_NFPREG	33	/* includes fsr */
 60typedef unsigned long elf_fpreg_t;
 61typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
 62
 63/* typedef struct user_fpu_struct elf_fpregset_t; */
 64#endif
 65
 66/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
 67 * use of this is to invoke "./ld.so someprog" to test out a new version of
 68 * the loader.  We need to make sure that it is out of the way of the program
 69 * that it will "exec", and that there is sufficient room for the brk.
 70 */
 71
 72#define ELF_ET_DYN_BASE         (0x08000000)
 73
 74#ifdef __LITTLE_ENDIAN__
 75#define ELF_DATA	ELFDATA2LSB
 76#else
 77#define ELF_DATA	ELFDATA2MSB
 78#endif
 79
 80#define ELF_EXEC_PAGESIZE	4096
 81
 82
 83#define ELF_CORE_COPY_REGS(_dest, _regs)			\
 84	memcpy((char *) &_dest, (char *) _regs,		\
 85	sizeof(struct pt_regs));
 86
 87/* This yields a mask that user programs can use to figure out what
 88 * instruction set this CPU supports.  This could be done in user space,
 89 * but it's not easy, and we've already done it here.
 90 */
 91#define ELF_HWCAP	(0)
 92
 93/* This yields a string that ld.so will use to load implementation
 94 * specific libraries for optimization.  This is more specific in
 95 * intent than poking at uname or /proc/cpuinfo.
 96
 97 * For the moment, we have only optimizations for the Intel generations,
 98 * but that could change...
 99 */
100#define ELF_PLATFORM  (NULL)
101
102/* Added _f parameter. Is this definition correct: TBD */
103#define ELF_PLAT_INIT(_r, _f)				\
104do {							\
105	_r->r1 =  _r->r1 =  _r->r2 =  _r->r3 =		\
106	_r->r4 =  _r->r5 =  _r->r6 =  _r->r7 =		\
107	_r->r8 =  _r->r9 =  _r->r10 = _r->r11 =		\
108	_r->r12 = _r->r13 = _r->r14 = _r->r15 =		\
109	_r->r16 = _r->r17 = _r->r18 = _r->r19 =		\
110	_r->r20 = _r->r21 = _r->r22 = _r->r23 =		\
111	_r->r24 = _r->r25 = _r->r26 = _r->r27 =		\
112	_r->r28 = _r->r29 = _r->r30 = _r->r31 =		\
113	0;						\
114} while (0)
115
116#ifdef __KERNEL__
117#define SET_PERSONALITY(ex) set_personality(PER_LINUX_32BIT)
118#endif
119
120#endif /* __uClinux__ */
121
122#endif /* _ASM_MICROBLAZE_ELF_H */