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

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /*
   3  * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
   4  * Copyright (C) 2008-2009 PetaLogix
   5  * Copyright (C) 2006 Atmark Techno, Inc.
   6  *
   7  * This file is subject to the terms and conditions of the GNU General Public
   8  * License. See the file "COPYING" in the main directory of this archive
   9  * for more details.
  10  */
  11
  12 #ifndef _UAPI_ASM_MICROBLAZE_ELF_H
  13 #define _UAPI_ASM_MICROBLAZE_ELF_H
  14
  15 #include <linux/elf-em.h>
  16
  17 /*
  18  * Note there is no "official" ELF designation for Microblaze.
  19  * I've snaffled the value from the microblaze binutils source code
  20  * /binutils/microblaze/include/elf/microblaze.h
  21  */
  22 #define EM_MICROBLAZE_OLD       0xbaab
  23 #define ELF_ARCH                EM_MICROBLAZE
  24
  25 /*
  26  * This is used to ensure we don't load something for the wrong architecture.
  27  */
  28 #define elf_check_arch(x)       ((x)->e_machine == EM_MICROBLAZE \
  29                                  || (x)->e_machine == EM_MICROBLAZE_OLD)
  30
  31 /*
  32  * These are used to set parameters in the core dumps.
  33  */
  34 #define ELF_CLASS       ELFCLASS32
  35
  36 #ifndef __uClinux__
  37
  38 /*
  39  * ELF register definitions..
  40  */
  41
  42 #include <asm/ptrace.h>
  43 #include <asm/byteorder.h>
  44
  45 #ifndef ELF_GREG_T
  46 #define ELF_GREG_T
  47 typedef unsigned long elf_greg_t;
  48 #endif
  49
  50 #ifndef ELF_NGREG
  51 #define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t))
  52 #endif
  53
  54 #ifndef ELF_GREGSET_T
  55 #define ELF_GREGSET_T
  56 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  57 #endif
  58
  59 #ifndef ELF_FPREGSET_T
  60 #define ELF_FPREGSET_T
  61
  62 /* TBD */
  63 #define ELF_NFPREG      33      /* includes fsr */
  64 typedef unsigned long elf_fpreg_t;
  65 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
  66
  67 /* typedef struct user_fpu_struct elf_fpregset_t; */
  68 #endif
  69
  70 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
  71  * use of this is to invoke "./ld.so someprog" to test out a new version of
  72  * the loader.  We need to make sure that it is out of the way of the program
  73  * that it will "exec", and that there is sufficient room for the brk.
  74  */
  75
  76 #define ELF_ET_DYN_BASE         (0x08000000)
  77
  78 #ifdef __MICROBLAZEEL__
  79 #define ELF_DATA        ELFDATA2LSB
  80 #else
  81 #define ELF_DATA        ELFDATA2MSB
  82 #endif
  83
  84 #define ELF_EXEC_PAGESIZE       PAGE_SIZE
  85
  86
  87 #define ELF_CORE_COPY_REGS(_dest, _regs)                        \
  88         memcpy((char *) &_dest, (char *) _regs,         \
  89         sizeof(struct pt_regs));
  90
  91 /* This yields a mask that user programs can use to figure out what
  92  * instruction set this CPU supports.  This could be done in user space,
  93  * but it's not easy, and we've already done it here.
  94  */
  95 #define ELF_HWCAP       (0)
  96
  97 /* This yields a string that ld.so will use to load implementation
  98  * specific libraries for optimization.  This is more specific in
  99  * intent than poking at uname or /proc/cpuinfo.
 100
 101  * For the moment, we have only optimizations for the Intel generations,
 102  * but that could change...
 103  */
 104 #define ELF_PLATFORM  (NULL)
 105
 106 /* Added _f parameter. Is this definition correct: TBD */
 107 #define ELF_PLAT_INIT(_r, _f)                           \
 108 do {                                                    \
 109         _r->r0 =  _r->r1 =  _r->r2 =  _r->r3 =          \
 110         _r->r4 =  _r->r5 =  _r->r6 =  _r->r7 =          \
 111         _r->r8 =  _r->r9 =  _r->r10 = _r->r11 =         \
 112         _r->r12 = _r->r13 = _r->r14 = _r->r15 =         \
 113         _r->r16 = _r->r17 = _r->r18 = _r->r19 =         \
 114         _r->r20 = _r->r21 = _r->r22 = _r->r23 =         \
 115         _r->r24 = _r->r25 = _r->r26 = _r->r27 =         \
 116         _r->r28 = _r->r29 = _r->r30 = _r->r31 =         \
 117         0;                                              \
 118 } while (0)
 119
 120
 121 #endif /* __uClinux__ */
 122
 123 #endif /* _UAPI_ASM_MICROBLAZE_ELF_H */