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_MICROBLAZE           189
  20 #define EM_MICROBLAZE_OLD       0xbaab
  21 #define ELF_ARCH                EM_MICROBLAZE
  22
  23 /*
  24  * This is used to ensure we don't load something for the wrong architecture.
  25  */
  26 #define elf_check_arch(x)       ((x)->e_machine == EM_MICROBLAZE \
  27                                  || (x)->e_machine == EM_MICROBLAZE_OLD)
  28
  29 /*
  30  * These are used to set parameters in the core dumps.
  31  */
  32 #define ELF_CLASS       ELFCLASS32
  33
  34 #ifndef __uClinux__
  35
  36 /*
  37  * ELF register definitions..
  38  */
  39
  40 #include <asm/ptrace.h>
  41 #include <asm/byteorder.h>
  42
  43 #ifndef ELF_GREG_T
  44 #define ELF_GREG_T
  45 typedef unsigned long elf_greg_t;
  46 #endif
  47
  48 #ifndef ELF_NGREG
  49 #define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t))
  50 #endif
  51
  52 #ifndef ELF_GREGSET_T
  53 #define ELF_GREGSET_T
  54 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  55 #endif
  56
  57 #ifndef ELF_FPREGSET_T
  58 #define ELF_FPREGSET_T
  59
  60 /* TBD */
  61 #define ELF_NFPREG      33      /* includes fsr */
  62 typedef unsigned long elf_fpreg_t;
  63 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
  64
  65 /* typedef struct user_fpu_struct elf_fpregset_t; */
  66 #endif
  67
  68 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
  69  * use of this is to invoke "./ld.so someprog" to test out a new version of
  70  * the loader.  We need to make sure that it is out of the way of the program
  71  * that it will "exec", and that there is sufficient room for the brk.
  72  */
  73
  74 #define ELF_ET_DYN_BASE         (0x08000000)
  75
  76 #ifdef __MICROBLAZEEL__
  77 #define ELF_DATA        ELFDATA2LSB
  78 #else
  79 #define ELF_DATA        ELFDATA2MSB
  80 #endif
  81
  82 #define ELF_EXEC_PAGESIZE       PAGE_SIZE
  83
  84
  85 #define ELF_CORE_COPY_REGS(_dest, _regs)                        \
  86         memcpy((char *) &_dest, (char *) _regs,         \
  87         sizeof(struct pt_regs));
  88
  89 /* This yields a mask that user programs can use to figure out what
  90  * instruction set this CPU supports.  This could be done in user space,
  91  * but it's not easy, and we've already done it here.
  92  */
  93 #define ELF_HWCAP       (0)
  94
  95 /* This yields a string that ld.so will use to load implementation
  96  * specific libraries for optimization.  This is more specific in
  97  * intent than poking at uname or /proc/cpuinfo.
  98
  99  * For the moment, we have only optimizations for the Intel generations,
 100  * but that could change...
 101  */
 102 #define ELF_PLATFORM  (NULL)
 103
 104 /* Added _f parameter. Is this definition correct: TBD */
 105 #define ELF_PLAT_INIT(_r, _f)                           \
 106 do {                                                    \
 107         _r->r1 =  _r->r1 =  _r->r2 =  _r->r3 =          \
 108         _r->r4 =  _r->r5 =  _r->r6 =  _r->r7 =          \
 109         _r->r8 =  _r->r9 =  _r->r10 = _r->r11 =         \
 110         _r->r12 = _r->r13 = _r->r14 = _r->r15 =         \
 111         _r->r16 = _r->r17 = _r->r18 = _r->r19 =         \
 112         _r->r20 = _r->r21 = _r->r22 = _r->r23 =         \
 113         _r->r24 = _r->r25 = _r->r26 = _r->r27 =         \
 114         _r->r28 = _r->r29 = _r->r30 = _r->r31 =         \
 115         0;                                              \
 116 } while (0)
 117
 118 #ifdef __KERNEL__
 119 #define SET_PERSONALITY(ex) set_personality(PER_LINUX_32BIT)
 120 #endif
 121
 122 #endif /* __uClinux__ */
 123
 124 #endif /* _ASM_MICROBLAZE_ELF_H */