release/src-rt-6.x.4708/linux/linux-2.6.36/arch/alpha/include/asm/elf.h

   1 #ifndef __ASM_ALPHA_ELF_H
   2 #define __ASM_ALPHA_ELF_H
   3
   4 #include <asm/auxvec.h>
   5
   6 /* Special values for the st_other field in the symbol table.  */
   7
   8 #define STO_ALPHA_NOPV          0x80
   9 #define STO_ALPHA_STD_GPLOAD    0x88
  10
  11 /*
  12  * Alpha ELF relocation types
  13  */
  14 #define R_ALPHA_NONE            0       /* No reloc */
  15 #define R_ALPHA_REFLONG         1       /* Direct 32 bit */
  16 #define R_ALPHA_REFQUAD         2       /* Direct 64 bit */
  17 #define R_ALPHA_GPREL32         3       /* GP relative 32 bit */
  18 #define R_ALPHA_LITERAL         4       /* GP relative 16 bit w/optimization */
  19 #define R_ALPHA_LITUSE          5       /* Optimization hint for LITERAL */
  20 #define R_ALPHA_GPDISP          6       /* Add displacement to GP */
  21 #define R_ALPHA_BRADDR          7       /* PC+4 relative 23 bit shifted */
  22 #define R_ALPHA_HINT            8       /* PC+4 relative 16 bit shifted */
  23 #define R_ALPHA_SREL16          9       /* PC relative 16 bit */
  24 #define R_ALPHA_SREL32          10      /* PC relative 32 bit */
  25 #define R_ALPHA_SREL64          11      /* PC relative 64 bit */
  26 #define R_ALPHA_GPRELHIGH       17      /* GP relative 32 bit, high 16 bits */
  27 #define R_ALPHA_GPRELLOW        18      /* GP relative 32 bit, low 16 bits */
  28 #define R_ALPHA_GPREL16         19      /* GP relative 16 bit */
  29 #define R_ALPHA_COPY            24      /* Copy symbol at runtime */
  30 #define R_ALPHA_GLOB_DAT        25      /* Create GOT entry */
  31 #define R_ALPHA_JMP_SLOT        26      /* Create PLT entry */
  32 #define R_ALPHA_RELATIVE        27      /* Adjust by program base */
  33 #define R_ALPHA_BRSGP           28
  34 #define R_ALPHA_TLSGD           29
  35 #define R_ALPHA_TLS_LDM         30
  36 #define R_ALPHA_DTPMOD64        31
  37 #define R_ALPHA_GOTDTPREL       32
  38 #define R_ALPHA_DTPREL64        33
  39 #define R_ALPHA_DTPRELHI        34
  40 #define R_ALPHA_DTPRELLO        35
  41 #define R_ALPHA_DTPREL16        36
  42 #define R_ALPHA_GOTTPREL        37
  43 #define R_ALPHA_TPREL64         38
  44 #define R_ALPHA_TPRELHI         39
  45 #define R_ALPHA_TPRELLO         40
  46 #define R_ALPHA_TPREL16         41
  47
  48 #define SHF_ALPHA_GPREL         0x10000000
  49
  50 /* Legal values for e_flags field of Elf64_Ehdr.  */
  51
  52 #define EF_ALPHA_32BIT          1       /* All addresses are below 2GB */
  53
  54 /*
  55  * ELF register definitions..
  56  */
  57
  58 /*
  59  * The OSF/1 version of <sys/procfs.h> makes gregset_t 46 entries long.
  60  * I have no idea why that is so.  For now, we just leave it at 33
  61  * (32 general regs + processor status word).
  62  */
  63 #define ELF_NGREG       33
  64 #define ELF_NFPREG      32
  65
  66 typedef unsigned long elf_greg_t;
  67 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  68
  69 typedef double elf_fpreg_t;
  70 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
  71
  72 /*
  73  * This is used to ensure we don't load something for the wrong architecture.
  74  */
  75 #define elf_check_arch(x) ((x)->e_machine == EM_ALPHA)
  76
  77 /*
  78  * These are used to set parameters in the core dumps.
  79  */
  80 #define ELF_CLASS       ELFCLASS64
  81 #define ELF_DATA        ELFDATA2LSB
  82 #define ELF_ARCH        EM_ALPHA
  83
  84 #define ELF_EXEC_PAGESIZE       8192
  85
  86 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
  87    use of this is to invoke "./ld.so someprog" to test out a new version of
  88    the loader.  We need to make sure that it is out of the way of the program
  89    that it will "exec", and that there is sufficient room for the brk.  */
  90
  91 #define ELF_ET_DYN_BASE         (TASK_UNMAPPED_BASE + 0x1000000)
  92
  93 /* $0 is set by ld.so to a pointer to a function which might be
  94    registered using atexit.  This provides a mean for the dynamic
  95    linker to call DT_FINI functions for shared libraries that have
  96    been loaded before the code runs.
  97
  98    So that we can use the same startup file with static executables,
  99    we start programs with a value of 0 to indicate that there is no
 100    such function.  */
 101
 102 #define ELF_PLAT_INIT(_r, load_addr)    _r->r0 = 0
 103
 104 /* The registers are layed out in pt_regs for PAL and syscall
 105    convenience.  Re-order them for the linear elf_gregset_t.  */
 106
 107 struct pt_regs;
 108 struct thread_info;
 109 struct task_struct;
 110 extern void dump_elf_thread(elf_greg_t *dest, struct pt_regs *pt,
 111                             struct thread_info *ti);
 112 #define ELF_CORE_COPY_REGS(DEST, REGS) \
 113         dump_elf_thread(DEST, REGS, current_thread_info());
 114
 115 /* Similar, but for a thread other than current.  */
 116
 117 extern int dump_elf_task(elf_greg_t *dest, struct task_struct *task);
 118 #define ELF_CORE_COPY_TASK_REGS(TASK, DEST) \
 119         dump_elf_task(*(DEST), TASK)
 120
 121 /* Similar, but for the FP registers.  */
 122
 123 extern int dump_elf_task_fp(elf_fpreg_t *dest, struct task_struct *task);
 124 #define ELF_CORE_COPY_FPREGS(TASK, DEST) \
 125         dump_elf_task_fp(*(DEST), TASK)
 126
 127 /* This yields a mask that user programs can use to figure out what
 128    instruction set this CPU supports.  This is trivial on Alpha,
 129    but not so on other machines. */
 130
 131 #define ELF_HWCAP  (~amask(-1))
 132
 133 /* This yields a string that ld.so will use to load implementation
 134    specific libraries for optimization.  This is more specific in
 135    intent than poking at uname or /proc/cpuinfo.  */
 136
 137 #define ELF_PLATFORM                            \
 138 ({                                              \
 139         enum implver_enum i_ = implver();       \
 140         ( i_ == IMPLVER_EV4 ? "ev4"             \
 141         : i_ == IMPLVER_EV5                     \
 142           ? (amask(AMASK_BWX) ? "ev5" : "ev56") \
 143         : amask (AMASK_CIX) ? "ev6" : "ev67");  \
 144 })
 145
 146 #define SET_PERSONALITY(EX)                                     \
 147         set_personality(((EX).e_flags & EF_ALPHA_32BIT)         \
 148            ? PER_LINUX_32BIT : PER_LINUX)
 149
 150 extern int alpha_l1i_cacheshape;
 151 extern int alpha_l1d_cacheshape;
 152 extern int alpha_l2_cacheshape;
 153 extern int alpha_l3_cacheshape;
 154
 155 /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
 156 #define ARCH_DLINFO                                             \
 157   do {                                                          \
 158     NEW_AUX_ENT(AT_L1I_CACHESHAPE, alpha_l1i_cacheshape);       \
 159     NEW_AUX_ENT(AT_L1D_CACHESHAPE, alpha_l1d_cacheshape);       \
 160     NEW_AUX_ENT(AT_L2_CACHESHAPE, alpha_l2_cacheshape);         \
 161     NEW_AUX_ENT(AT_L3_CACHESHAPE, alpha_l3_cacheshape);         \
 162   } while (0)
 163
 164 #endif /* __ASM_ALPHA_ELF_H */