arch/arm/include/asm/elf.h

   1 #ifndef __ASMARM_ELF_H
   2 #define __ASMARM_ELF_H
   3
   4 #include <asm/hwcap.h>
   5
   6 /*
   7  * ELF register definitions..
   8  */
   9 #include <asm/ptrace.h>
  10 #include <asm/user.h>
  11
  12 struct task_struct;
  13
  14 typedef unsigned long elf_greg_t;
  15 typedef unsigned long elf_freg_t[3];
  16
  17 #define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
  18 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  19
  20 typedef struct user_fp elf_fpregset_t;
  21
  22 #define EM_ARM  40
  23
  24 #define EF_ARM_EABI_MASK        0xff000000
  25 #define EF_ARM_EABI_UNKNOWN     0x00000000
  26 #define EF_ARM_EABI_VER1        0x01000000
  27 #define EF_ARM_EABI_VER2        0x02000000
  28 #define EF_ARM_EABI_VER3        0x03000000
  29 #define EF_ARM_EABI_VER4        0x04000000
  30 #define EF_ARM_EABI_VER5        0x05000000
  31
  32 #define EF_ARM_BE8              0x00800000      /* ABI 4,5 */
  33 #define EF_ARM_LE8              0x00400000      /* ABI 4,5 */
  34 #define EF_ARM_MAVERICK_FLOAT   0x00000800      /* ABI 0 */
  35 #define EF_ARM_VFP_FLOAT        0x00000400      /* ABI 0 */
  36 #define EF_ARM_SOFT_FLOAT       0x00000200      /* ABI 0 */
  37 #define EF_ARM_OLD_ABI          0x00000100      /* ABI 0 */
  38 #define EF_ARM_NEW_ABI          0x00000080      /* ABI 0 */
  39 #define EF_ARM_ALIGN8           0x00000040      /* ABI 0 */
  40 #define EF_ARM_PIC              0x00000020      /* ABI 0 */
  41 #define EF_ARM_MAPSYMSFIRST     0x00000010      /* ABI 2 */
  42 #define EF_ARM_APCS_FLOAT       0x00000010      /* ABI 0, floats in fp regs */
  43 #define EF_ARM_DYNSYMSUSESEGIDX 0x00000008      /* ABI 2 */
  44 #define EF_ARM_APCS_26          0x00000008      /* ABI 0 */
  45 #define EF_ARM_SYMSARESORTED    0x00000004      /* ABI 1,2 */
  46 #define EF_ARM_INTERWORK        0x00000004      /* ABI 0 */
  47 #define EF_ARM_HASENTRY         0x00000002      /* All */
  48 #define EF_ARM_RELEXEC          0x00000001      /* All */
  49
  50 #define R_ARM_NONE              0
  51 #define R_ARM_PC24              1
  52 #define R_ARM_ABS32             2
  53 #define R_ARM_CALL              28
  54 #define R_ARM_JUMP24            29
  55 #define R_ARM_V4BX              40
  56 #define R_ARM_PREL31            42
  57 #define R_ARM_MOVW_ABS_NC       43
  58 #define R_ARM_MOVT_ABS          44
  59
  60 #define R_ARM_THM_CALL          10
  61 #define R_ARM_THM_JUMP24        30
  62 #define R_ARM_THM_MOVW_ABS_NC   47
  63 #define R_ARM_THM_MOVT_ABS      48
  64
  65 /*
  66  * These are used to set parameters in the core dumps.
  67  */
  68 #define ELF_CLASS       ELFCLASS32
  69 #ifdef __ARMEB__
  70 #define ELF_DATA        ELFDATA2MSB
  71 #else
  72 #define ELF_DATA        ELFDATA2LSB
  73 #endif
  74 #define ELF_ARCH        EM_ARM
  75
  76 /*
  77  * This yields a string that ld.so will use to load implementation
  78  * specific libraries for optimization.  This is more specific in
  79  * intent than poking at uname or /proc/cpuinfo.
  80  *
  81  * For now we just provide a fairly general string that describes the
  82  * processor family.  This could be made more specific later if someone
  83  * implemented optimisations that require it.  26-bit CPUs give you
  84  * "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't
  85  * supported).  32-bit CPUs give you "v3[lb]" for anything based on an
  86  * ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1
  87  * core.
  88  */
  89 #define ELF_PLATFORM_SIZE 8
  90 #define ELF_PLATFORM    (elf_platform)
  91
  92 extern char elf_platform[];
  93
  94 struct elf32_hdr;
  95
  96 /*
  97  * This is used to ensure we don't load something for the wrong architecture.
  98  */
  99 extern int elf_check_arch(const struct elf32_hdr *);
 100 #define elf_check_arch elf_check_arch
 101
 102 #define vmcore_elf64_check_arch(x) (0)
 103
 104 extern int arm_elf_read_implies_exec(const struct elf32_hdr *, int);
 105 #define elf_read_implies_exec(ex,stk) arm_elf_read_implies_exec(&(ex), stk)
 106
 107 struct task_struct;
 108 int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
 109 #define ELF_CORE_COPY_TASK_REGS dump_task_regs
 110
 111 #define CORE_DUMP_USE_REGSET
 112 #define ELF_EXEC_PAGESIZE       4096
 113
 114 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
 115    use of this is to invoke "./ld.so someprog" to test out a new version of
 116    the loader.  We need to make sure that it is out of the way of the program
 117    that it will "exec", and that there is sufficient room for the brk.  */
 118
 119 #define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
 120
 121 /* When the program starts, a1 contains a pointer to a function to be
 122    registered with atexit, as per the SVR4 ABI.  A value of 0 means we
 123    have no such handler.  */
 124 #define ELF_PLAT_INIT(_r, load_addr)    (_r)->ARM_r0 = 0
 125
 126 extern void elf_set_personality(const struct elf32_hdr *);
 127 #define SET_PERSONALITY(ex)     elf_set_personality(&(ex))
 128
 129 struct mm_struct;
 130 extern unsigned long arch_randomize_brk(struct mm_struct *mm);
 131 #define arch_randomize_brk arch_randomize_brk
 132
 133 #endif