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