arch/blackfin/include/asm/elf.h

   1 /*
   2  * Copyright 2004-2009 Analog Devices Inc.
   3  *
   4  * Licensed under the GPL-2 or later.
   5  */
   6
   7 #ifndef __ASMBFIN_ELF_H
   8 #define __ASMBFIN_ELF_H
   9
  10 /*
  11  * ELF register definitions..
  12  */
  13
  14 #include <asm/ptrace.h>
  15 #include <asm/user.h>
  16
  17 /* Processor specific flags for the ELF header e_flags field.  */
  18 #define EF_BFIN_PIC             0x00000001      /* -fpic */
  19 #define EF_BFIN_FDPIC           0x00000002      /* -mfdpic */
  20 #define EF_BFIN_CODE_IN_L1      0x00000010      /* --code-in-l1 */
  21 #define EF_BFIN_DATA_IN_L1      0x00000020      /* --data-in-l1 */
  22 #define EF_BFIN_CODE_IN_L2      0x00000040      /* --code-in-l2 */
  23 #define EF_BFIN_DATA_IN_L2      0x00000080      /* --data-in-l2 */
  24
  25 #if 1   /* core dumps not supported, but linux/elfcore.h needs these */
  26 typedef unsigned long elf_greg_t;
  27
  28 #define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t))
  29 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  30
  31 typedef struct { } elf_fpregset_t;
  32 #endif
  33
  34 /*
  35  * This is used to ensure we don't load something for the wrong architecture.
  36  */
  37 #define elf_check_arch(x) ((x)->e_machine == EM_BLACKFIN)
  38
  39 #define elf_check_fdpic(x) ((x)->e_flags & EF_BFIN_FDPIC /* && !((x)->e_flags & EF_FRV_NON_PIC_RELOCS) */)
  40 #define elf_check_const_displacement(x) ((x)->e_flags & EF_BFIN_PIC)
  41
  42 /* EM_BLACKFIN defined in linux/elf.h   */
  43
  44 /*
  45  * These are used to set parameters in the core dumps.
  46  */
  47 #define ELF_CLASS       ELFCLASS32
  48 #define ELF_DATA        ELFDATA2LSB
  49 #define ELF_ARCH        EM_BLACKFIN
  50
  51 #define ELF_PLAT_INIT(_r)       _r->p1 = 0
  52
  53 #define ELF_FDPIC_PLAT_INIT(_regs, _exec_map_addr, _interp_map_addr, _dynamic_addr)     \
  54 do {                                                                                    \
  55         _regs->r7       = 0;                                            \
  56         _regs->p0       = _exec_map_addr;                               \
  57         _regs->p1       = _interp_map_addr;                             \
  58         _regs->p2       = _dynamic_addr;                                \
  59 } while(0)
  60
  61 #if 0
  62 #define CORE_DUMP_USE_REGSET
  63 #endif
  64 #define ELF_FDPIC_CORE_EFLAGS   EF_BFIN_FDPIC
  65 #define ELF_EXEC_PAGESIZE       4096
  66
  67 #define R_BFIN_UNUSED0         0   /* relocation type 0 is not defined */
  68 #define R_BFIN_PCREL5M2        1   /* LSETUP part a */
  69 #define R_BFIN_UNUSED1         2   /* relocation type 2 is not defined */
  70 #define R_BFIN_PCREL10         3   /* type 3, if cc jump <target> */
  71 #define R_BFIN_PCREL12_JUMP    4   /* type 4, jump <target> */
  72 #define R_BFIN_RIMM16          5   /* type 0x5, rN = <target> */
  73 #define R_BFIN_LUIMM16         6   /* # 0x6, preg.l=<target> Load imm 16 to lower half */
  74 #define R_BFIN_HUIMM16         7   /* # 0x7, preg.h=<target> Load imm 16 to upper half */
  75 #define R_BFIN_PCREL12_JUMP_S  8   /* # 0x8 jump.s <target> */
  76 #define R_BFIN_PCREL24_JUMP_X  9   /* # 0x9 jump.x <target> */
  77 #define R_BFIN_PCREL24         10  /* # 0xa call <target> , not expandable */
  78 #define R_BFIN_UNUSEDB         11  /* # 0xb not generated */
  79 #define R_BFIN_UNUSEDC         12  /* # 0xc  not used */
  80 #define R_BFIN_PCREL24_JUMP_L  13  /* 0xd jump.l <target> */
  81 #define R_BFIN_PCREL24_CALL_X  14  /* 0xE, call.x <target> if <target> is above 24 bit limit call through P1 */
  82 #define R_BFIN_VAR_EQ_SYMB     15  /* 0xf, linker should treat it same as 0x12 */
  83 #define R_BFIN_BYTE_DATA       16  /* 0x10, .byte var = symbol */
  84 #define R_BFIN_BYTE2_DATA      17  /* 0x11, .byte2 var = symbol */
  85 #define R_BFIN_BYTE4_DATA      18  /* 0x12, .byte4 var = symbol and .var var=symbol */
  86 #define R_BFIN_PCREL11         19  /* 0x13, lsetup part b */
  87 #define R_BFIN_UNUSED14        20  /* 0x14, undefined */
  88 #define R_BFIN_UNUSED15        21  /* not generated by VDSP 3.5 */
  89
  90 /* arithmetic relocations */
  91 #define R_BFIN_PUSH            0xE0
  92 #define R_BFIN_CONST           0xE1
  93 #define R_BFIN_ADD             0xE2
  94 #define R_BFIN_SUB             0xE3
  95 #define R_BFIN_MULT            0xE4
  96 #define R_BFIN_DIV             0xE5
  97 #define R_BFIN_MOD             0xE6
  98 #define R_BFIN_LSHIFT          0xE7
  99 #define R_BFIN_RSHIFT          0xE8
 100 #define R_BFIN_AND             0xE9
 101 #define R_BFIN_OR              0xEA
 102 #define R_BFIN_XOR             0xEB
 103 #define R_BFIN_LAND            0xEC
 104 #define R_BFIN_LOR             0xED
 105 #define R_BFIN_LEN             0xEE
 106 #define R_BFIN_NEG             0xEF
 107 #define R_BFIN_COMP            0xF0
 108 #define R_BFIN_PAGE            0xF1
 109 #define R_BFIN_HWPAGE          0xF2
 110 #define R_BFIN_ADDR            0xF3
 111
 112 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
 113    use of this is to invoke "./ld.so someprog" to test out a new version of
 114    the loader.  We need to make sure that it is out of the way of the program
 115    that it will "exec", and that there is sufficient room for the brk.  */
 116
 117 #define ELF_ET_DYN_BASE         0xD0000000UL
 118
 119 #define ELF_CORE_COPY_REGS(pr_reg, regs)        \
 120         memcpy((char *) &pr_reg, (char *)regs,  \
 121                sizeof(struct pt_regs));
 122 #define ELF_CORE_COPY_FPREGS(...) 0     /* Blackfin has no FPU */
 123
 124 /* This yields a mask that user programs can use to figure out what
 125    instruction set this cpu supports.  */
 126
 127 #define ELF_HWCAP       (0)
 128
 129 /* This yields a string that ld.so will use to load implementation
 130    specific libraries for optimization.  This is more specific in
 131    intent than poking at uname or /proc/cpuinfo.  */
 132
 133 #define ELF_PLATFORM  (NULL)
 134
 135 #define SET_PERSONALITY(ex) set_personality(PER_LINUX)
 136
 137 #endif