include/asm-alpha/elf.h

   1 #ifndef __ASM_ALPHA_ELF_H
   2 #define __ASM_ALPHA_ELF_H
   3
   4 /* Special values for the st_other field in the symbol table.  */
   5
   6 #define STO_ALPHA_NOPV          0x80
   7 #define STO_ALPHA_STD_GPLOAD    0x88
   8
   9 /*
  10  * Alpha ELF relocation types
  11  */
  12 #define R_ALPHA_NONE            0       /* No reloc */
  13 #define R_ALPHA_REFLONG         1       /* Direct 32 bit */
  14 #define R_ALPHA_REFQUAD         2       /* Direct 64 bit */
  15 #define R_ALPHA_GPREL32         3       /* GP relative 32 bit */
  16 #define R_ALPHA_LITERAL         4       /* GP relative 16 bit w/optimization */
  17 #define R_ALPHA_LITUSE          5       /* Optimization hint for LITERAL */
  18 #define R_ALPHA_GPDISP          6       /* Add displacement to GP */
  19 #define R_ALPHA_BRADDR          7       /* PC+4 relative 23 bit shifted */
  20 #define R_ALPHA_HINT            8       /* PC+4 relative 16 bit shifted */
  21 #define R_ALPHA_SREL16          9       /* PC relative 16 bit */
  22 #define R_ALPHA_SREL32          10      /* PC relative 32 bit */
  23 #define R_ALPHA_SREL64          11      /* PC relative 64 bit */
  24 #define R_ALPHA_GPRELHIGH       17      /* GP relative 32 bit, high 16 bits */
  25 #define R_ALPHA_GPRELLOW        18      /* GP relative 32 bit, low 16 bits */
  26 #define R_ALPHA_GPREL16         19      /* GP relative 16 bit */
  27 #define R_ALPHA_COPY            24      /* Copy symbol at runtime */
  28 #define R_ALPHA_GLOB_DAT        25      /* Create GOT entry */
  29 #define R_ALPHA_JMP_SLOT        26      /* Create PLT entry */
  30 #define R_ALPHA_RELATIVE        27      /* Adjust by program base */
  31 #define R_ALPHA_BRSGP           28
  32 #define R_ALPHA_TLSGD           29
  33 #define R_ALPHA_TLS_LDM         30
  34 #define R_ALPHA_DTPMOD64        31
  35 #define R_ALPHA_GOTDTPREL       32
  36 #define R_ALPHA_DTPREL64        33
  37 #define R_ALPHA_DTPRELHI        34
  38 #define R_ALPHA_DTPRELLO        35
  39 #define R_ALPHA_DTPREL16        36
  40 #define R_ALPHA_GOTTPREL        37
  41 #define R_ALPHA_TPREL64         38
  42 #define R_ALPHA_TPRELHI         39
  43 #define R_ALPHA_TPRELLO         40
  44 #define R_ALPHA_TPREL16         41
  45
  46 #define SHF_ALPHA_GPREL         0x10000000
  47
  48 /* Legal values for e_flags field of Elf64_Ehdr.  */
  49
  50 #define EF_ALPHA_32BIT          1       /* All addresses are below 2GB */
  51
  52 /*
  53  * ELF register definitions..
  54  */
  55
  56 /*
  57  * The OSF/1 version of <sys/procfs.h> makes gregset_t 46 entries long.
  58  * I have no idea why that is so.  For now, we just leave it at 33
  59  * (32 general regs + processor status word).
  60  */
  61 #define ELF_NGREG       33
  62 #define ELF_NFPREG      32
  63
  64 typedef unsigned long elf_greg_t;
  65 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  66
  67 typedef double elf_fpreg_t;
  68 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
  69
  70 /*
  71  * This is used to ensure we don't load something for the wrong architecture.
  72  */
  73 #define elf_check_arch(x) ((x)->e_machine == EM_ALPHA)
  74
  75 /*
  76  * These are used to set parameters in the core dumps.
  77  */
  78 #define ELF_CLASS       ELFCLASS64
  79 #define ELF_DATA        ELFDATA2LSB
  80 #define ELF_ARCH        EM_ALPHA
  81
  82 #define USE_ELF_CORE_DUMP
  83 #define ELF_EXEC_PAGESIZE       8192
  84
  85 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
  86    use of this is to invoke "./ld.so someprog" to test out a new version of
  87    the loader.  We need to make sure that it is out of the way of the program
  88    that it will "exec", and that there is sufficient room for the brk.  */
  89
  90 #define ELF_ET_DYN_BASE         (TASK_UNMAPPED_BASE + 0x1000000)
  91
  92 /* $0 is set by ld.so to a pointer to a function which might be
  93    registered using atexit.  This provides a mean for the dynamic
  94    linker to call DT_FINI functions for shared libraries that have
  95    been loaded before the code runs.
  96
  97    So that we can use the same startup file with static executables,
  98    we start programs with a value of 0 to indicate that there is no
  99    such function.  */
 100
 101 #define ELF_PLAT_INIT(_r, load_addr)    _r->r0 = 0
 102
 103 /* The registers are layed out in pt_regs for PAL and syscall
 104    convenience.  Re-order them for the linear elf_gregset_t.  */
 105
 106 struct pt_regs;
 107 struct thread_info;
 108 struct task_struct;
 109 extern void dump_elf_thread(elf_greg_t *dest, struct pt_regs *pt,
 110                             struct thread_info *ti);
 111 #define ELF_CORE_COPY_REGS(DEST, REGS) \
 112         dump_elf_thread(DEST, REGS, current_thread_info());
 113
 114 /* Similar, but for a thread other than current.  */
 115
 116 extern int dump_elf_task(elf_greg_t *dest, struct task_struct *task);
 117 #define ELF_CORE_COPY_TASK_REGS(TASK, DEST) \
 118         dump_elf_task(*(DEST), TASK)
 119
 120 /* Similar, but for the FP registers.  */
 121
 122 extern int dump_elf_task_fp(elf_fpreg_t *dest, struct task_struct *task);
 123 #define ELF_CORE_COPY_FPREGS(TASK, DEST) \
 124         dump_elf_task_fp(*(DEST), TASK)
 125
 126 /* This yields a mask that user programs can use to figure out what
 127    instruction set this CPU supports.  This is trivial on Alpha,
 128    but not so on other machines. */
 129
 130 #define ELF_HWCAP  (~amask(-1))
 131
 132 /* This yields a string that ld.so will use to load implementation
 133    specific libraries for optimization.  This is more specific in
 134    intent than poking at uname or /proc/cpuinfo.  */
 135
 136 #define ELF_PLATFORM                            \
 137 ({                                              \
 138         enum implver_enum i_ = implver();       \
 139         ( i_ == IMPLVER_EV4 ? "ev4"             \
 140         : i_ == IMPLVER_EV5                     \
 141           ? (amask(AMASK_BWX) ? "ev5" : "ev56") \
 142         : amask (AMASK_CIX) ? "ev6" : "ev67");  \
 143 })
 144
 145 /* Reserve these numbers for any future use of a VDSO.  */
 146 #if 0
 147 #define AT_SYSINFO              32
 148 #define AT_SYSINFO_EHDR         33
 149 #endif
 150
 151 /* More complete cache descriptions than AT_[DIU]CACHEBSIZE.  If the
 152    value is -1, then the cache doesn't exist.  Otherwise:
 153
 154       bit 0-3:    Cache set-associativity; 0 means fully associative.
 155       bit 4-7:    Log2 of cacheline size.
 156       bit 8-31:   Size of the entire cache >> 8.
 157       bit 32-63:  Reserved.
 158 */
 159
 160 #define AT_L1I_CACHESHAPE       34
 161 #define AT_L1D_CACHESHAPE       35
 162 #define AT_L2_CACHESHAPE        36
 163 #define AT_L3_CACHESHAPE        37
 164
 165 #ifdef __KERNEL__
 166
 167 #define SET_PERSONALITY(EX, IBCS2)                              \
 168         set_personality(((EX).e_flags & EF_ALPHA_32BIT)         \
 169            ? PER_LINUX_32BIT : (IBCS2) ? PER_SVR4 : PER_LINUX)
 170
 171 extern int alpha_l1i_cacheshape;
 172 extern int alpha_l1d_cacheshape;
 173 extern int alpha_l2_cacheshape;
 174 extern int alpha_l3_cacheshape;
 175
 176 #define ARCH_DLINFO                                             \
 177   do {                                                          \
 178     NEW_AUX_ENT(AT_L1I_CACHESHAPE, alpha_l1i_cacheshape);       \
 179     NEW_AUX_ENT(AT_L1D_CACHESHAPE, alpha_l1d_cacheshape);       \
 180     NEW_AUX_ENT(AT_L2_CACHESHAPE, alpha_l2_cacheshape);         \
 181     NEW_AUX_ENT(AT_L3_CACHESHAPE, alpha_l3_cacheshape);         \
 182   } while (0)
 183
 184 #endif /* __KERNEL__ */
 185 #endif /* __ASM_ALPHA_ELF_H */