include/asm-sparc64/elf.h

   1 /* $Id: elf.h,v 1.32 2002/02/09 19:49:31 davem Exp $ */
   2 #ifndef __ASM_SPARC64_ELF_H
   3 #define __ASM_SPARC64_ELF_H
   4
   5 /*
   6  * ELF register definitions..
   7  */
   8
   9 #include <asm/ptrace.h>
  10 #ifdef __KERNEL__
  11 #include <asm/processor.h>
  12 #include <asm/uaccess.h>
  13 #include <asm/spitfire.h>
  14 #endif
  15
  16 /*
  17  * Sparc section types
  18  */
  19 #define STT_REGISTER            13
  20
  21 /*
  22  * Sparc ELF relocation types
  23  */
  24 #define R_SPARC_NONE            0
  25 #define R_SPARC_8               1
  26 #define R_SPARC_16              2
  27 #define R_SPARC_32              3
  28 #define R_SPARC_DISP8           4
  29 #define R_SPARC_DISP16          5
  30 #define R_SPARC_DISP32          6
  31 #define R_SPARC_WDISP30         7
  32 #define R_SPARC_WDISP22         8
  33 #define R_SPARC_HI22            9
  34 #define R_SPARC_22              10
  35 #define R_SPARC_13              11
  36 #define R_SPARC_LO10            12
  37 #define R_SPARC_GOT10           13
  38 #define R_SPARC_GOT13           14
  39 #define R_SPARC_GOT22           15
  40 #define R_SPARC_PC10            16
  41 #define R_SPARC_PC22            17
  42 #define R_SPARC_WPLT30          18
  43 #define R_SPARC_COPY            19
  44 #define R_SPARC_GLOB_DAT        20
  45 #define R_SPARC_JMP_SLOT        21
  46 #define R_SPARC_RELATIVE        22
  47 #define R_SPARC_UA32            23
  48 #define R_SPARC_PLT32           24
  49 #define R_SPARC_HIPLT22         25
  50 #define R_SPARC_LOPLT10         26
  51 #define R_SPARC_PCPLT32         27
  52 #define R_SPARC_PCPLT22         28
  53 #define R_SPARC_PCPLT10         29
  54 #define R_SPARC_10              30
  55 #define R_SPARC_11              31
  56 #define R_SPARC_64              32
  57 #define R_SPARC_OLO10           33
  58 #define R_SPARC_WDISP16         40
  59 #define R_SPARC_WDISP19         41
  60 #define R_SPARC_7               43
  61 #define R_SPARC_5               44
  62 #define R_SPARC_6               45
  63
  64 /* Bits present in AT_HWCAP, primarily for Sparc32.  */
  65
  66 #define HWCAP_SPARC_FLUSH       1    /* CPU supports flush instruction. */
  67 #define HWCAP_SPARC_STBAR       2
  68 #define HWCAP_SPARC_SWAP        4
  69 #define HWCAP_SPARC_MULDIV      8
  70 #define HWCAP_SPARC_V9          16
  71 #define HWCAP_SPARC_ULTRA3      32
  72 #define HWCAP_SPARC_BLKINIT     64
  73
  74 /*
  75  * These are used to set parameters in the core dumps.
  76  */
  77 #ifndef ELF_ARCH
  78 #define ELF_ARCH                EM_SPARCV9
  79 #define ELF_CLASS               ELFCLASS64
  80 #define ELF_DATA                ELFDATA2MSB
  81
  82 typedef unsigned long elf_greg_t;
  83
  84 #define ELF_NGREG 36
  85 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  86 /* Format of 64-bit elf_gregset_t is:
  87  *      G0 --> G7
  88  *      O0 --> O7
  89  *      L0 --> L7
  90  *      I0 --> I7
  91  *      TSTATE
  92  *      TPC
  93  *      TNPC
  94  *      Y
  95  */
  96 #define ELF_CORE_COPY_REGS(__elf_regs, __pt_regs)       \
  97 do {    unsigned long *dest = &(__elf_regs[0]);         \
  98         struct pt_regs *src = (__pt_regs);              \
  99         unsigned long __user *sp;                       \
 100         int i;                                          \
 101         for(i = 0; i < 16; i++)                         \
 102                 dest[i] = src->u_regs[i];               \
 103         /* Don't try this at home kids... */            \
 104         sp = (unsigned long __user *)                   \
 105          ((src->u_regs[14] + STACK_BIAS)                \
 106           & 0xfffffffffffffff8UL);                      \
 107         for(i = 0; i < 16; i++)                         \
 108                 __get_user(dest[i+16], &sp[i]);         \
 109         dest[32] = src->tstate;                         \
 110         dest[33] = src->tpc;                            \
 111         dest[34] = src->tnpc;                           \
 112         dest[35] = src->y;                              \
 113 } while (0);
 114
 115 typedef struct {
 116         unsigned long   pr_regs[32];
 117         unsigned long   pr_fsr;
 118         unsigned long   pr_gsr;
 119         unsigned long   pr_fprs;
 120 } elf_fpregset_t;
 121 #endif
 122
 123 #define ELF_CORE_COPY_TASK_REGS(__tsk, __elf_regs)      \
 124         ({ ELF_CORE_COPY_REGS((*(__elf_regs)), task_pt_regs(__tsk)); 1; })
 125
 126 /*
 127  * This is used to ensure we don't load something for the wrong architecture.
 128  */
 129 #ifndef elf_check_arch
 130 #define elf_check_arch(x) ((x)->e_machine == ELF_ARCH)  /* Might be EM_SPARCV9 or EM_SPARC */
 131 #endif
 132
 133 #define USE_ELF_CORE_DUMP
 134 #define ELF_EXEC_PAGESIZE       PAGE_SIZE
 135
 136 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
 137    use of this is to invoke "./ld.so someprog" to test out a new version of
 138    the loader.  We need to make sure that it is out of the way of the program
 139    that it will "exec", and that there is sufficient room for the brk.  */
 140
 141 #ifndef ELF_ET_DYN_BASE
 142 #define ELF_ET_DYN_BASE         0x0000010000000000UL
 143 #endif
 144
 145
 146 /* This yields a mask that user programs can use to figure out what
 147    instruction set this cpu supports.  */
 148
 149 /* On Ultra, we support all of the v8 capabilities. */
 150 static inline unsigned int sparc64_elf_hwcap(void)
 151 {
 152         unsigned int cap = (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR |
 153                             HWCAP_SPARC_SWAP | HWCAP_SPARC_MULDIV |
 154                             HWCAP_SPARC_V9);
 155
 156         if (tlb_type == cheetah || tlb_type == cheetah_plus)
 157                 cap |= HWCAP_SPARC_ULTRA3;
 158         else if (tlb_type == hypervisor)
 159                 cap |= HWCAP_SPARC_BLKINIT;
 160
 161         return cap;
 162 }
 163
 164 #define ELF_HWCAP       sparc64_elf_hwcap();
 165
 166 /* This yields a string that ld.so will use to load implementation
 167    specific libraries for optimization.  This is more specific in
 168    intent than poking at uname or /proc/cpuinfo.  */
 169
 170 #define ELF_PLATFORM    (NULL)
 171
 172 #ifdef __KERNEL__
 173 #define SET_PERSONALITY(ex, ibcs2)                      \
 174 do {    unsigned long new_flags = current_thread_info()->flags; \
 175         new_flags &= _TIF_32BIT;                        \
 176         if ((ex).e_ident[EI_CLASS] == ELFCLASS32)       \
 177                 new_flags |= _TIF_32BIT;                \
 178         else                                            \
 179                 new_flags &= ~_TIF_32BIT;               \
 180         if ((current_thread_info()->flags & _TIF_32BIT) \
 181             != new_flags)                               \
 182                 set_thread_flag(TIF_ABI_PENDING);       \
 183         else                                            \
 184                 clear_thread_flag(TIF_ABI_PENDING);     \
 185         /* flush_thread will update pgd cache */        \
 186         if (ibcs2)                                      \
 187                 set_personality(PER_SVR4);              \
 188         else if (current->personality != PER_LINUX32)   \
 189                 set_personality(PER_LINUX);             \
 190 } while (0)
 191 #endif
 192
 193 #endif /* !(__ASM_SPARC64_ELF_H) */