arch/sparc/include/asm/elf_64.h

   1 #ifndef __ASM_SPARC64_ELF_H
   2 #define __ASM_SPARC64_ELF_H
   3
   4 /*
   5  * ELF register definitions..
   6  */
   7
   8 #include <asm/ptrace.h>
   9 #include <asm/processor.h>
  10 #include <asm/uaccess.h>
  11 #include <asm/spitfire.h>
  12
  13 /*
  14  * Sparc section types
  15  */
  16 #define STT_REGISTER            13
  17
  18 /*
  19  * Sparc ELF relocation types
  20  */
  21 #define R_SPARC_NONE            0
  22 #define R_SPARC_8               1
  23 #define R_SPARC_16              2
  24 #define R_SPARC_32              3
  25 #define R_SPARC_DISP8           4
  26 #define R_SPARC_DISP16          5
  27 #define R_SPARC_DISP32          6
  28 #define R_SPARC_WDISP30         7
  29 #define R_SPARC_WDISP22         8
  30 #define R_SPARC_HI22            9
  31 #define R_SPARC_22              10
  32 #define R_SPARC_13              11
  33 #define R_SPARC_LO10            12
  34 #define R_SPARC_GOT10           13
  35 #define R_SPARC_GOT13           14
  36 #define R_SPARC_GOT22           15
  37 #define R_SPARC_PC10            16
  38 #define R_SPARC_PC22            17
  39 #define R_SPARC_WPLT30          18
  40 #define R_SPARC_COPY            19
  41 #define R_SPARC_GLOB_DAT        20
  42 #define R_SPARC_JMP_SLOT        21
  43 #define R_SPARC_RELATIVE        22
  44 #define R_SPARC_UA32            23
  45 #define R_SPARC_PLT32           24
  46 #define R_SPARC_HIPLT22         25
  47 #define R_SPARC_LOPLT10         26
  48 #define R_SPARC_PCPLT32         27
  49 #define R_SPARC_PCPLT22         28
  50 #define R_SPARC_PCPLT10         29
  51 #define R_SPARC_10              30
  52 #define R_SPARC_11              31
  53 #define R_SPARC_64              32
  54 #define R_SPARC_OLO10           33
  55 #define R_SPARC_WDISP16         40
  56 #define R_SPARC_WDISP19         41
  57 #define R_SPARC_7               43
  58 #define R_SPARC_5               44
  59 #define R_SPARC_6               45
  60
  61 /* Bits present in AT_HWCAP, primarily for Sparc32.  */
  62
  63 #define HWCAP_SPARC_FLUSH       1    /* CPU supports flush instruction. */
  64 #define HWCAP_SPARC_STBAR       2
  65 #define HWCAP_SPARC_SWAP        4
  66 #define HWCAP_SPARC_MULDIV      8
  67 #define HWCAP_SPARC_V9          16
  68 #define HWCAP_SPARC_ULTRA3      32
  69 #define HWCAP_SPARC_BLKINIT     64
  70 #define HWCAP_SPARC_N2          128
  71
  72 #define CORE_DUMP_USE_REGSET
  73
  74 /*
  75  * These are used to set parameters in the core dumps.
  76  */
  77 #define ELF_ARCH                EM_SPARCV9
  78 #define ELF_CLASS               ELFCLASS64
  79 #define ELF_DATA                ELFDATA2MSB
  80
  81 /* Format of 64-bit elf_gregset_t is:
  82  *      G0 --> G7
  83  *      O0 --> O7
  84  *      L0 --> L7
  85  *      I0 --> I7
  86  *      TSTATE
  87  *      TPC
  88  *      TNPC
  89  *      Y
  90  */
  91 typedef unsigned long elf_greg_t;
  92 #define ELF_NGREG 36
  93 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  94
  95 typedef struct {
  96         unsigned long   pr_regs[32];
  97         unsigned long   pr_fsr;
  98         unsigned long   pr_gsr;
  99         unsigned long   pr_fprs;
 100 } elf_fpregset_t;
 101
 102 /* Format of 32-bit elf_gregset_t is:
 103  *      G0 --> G7
 104  *      O0 --> O7
 105  *      L0 --> L7
 106  *      I0 --> I7
 107  *      PSR, PC, nPC, Y, WIM, TBR
 108  */
 109 typedef unsigned int compat_elf_greg_t;
 110 #define COMPAT_ELF_NGREG 38
 111 typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG];
 112
 113 typedef struct {
 114         union {
 115                 unsigned int    pr_regs[32];
 116                 unsigned long   pr_dregs[16];
 117         } pr_fr;
 118         unsigned int __unused;
 119         unsigned int    pr_fsr;
 120         unsigned char   pr_qcnt;
 121         unsigned char   pr_q_entrysize;
 122         unsigned char   pr_en;
 123         unsigned int    pr_q[64];
 124 } compat_elf_fpregset_t;
 125
 126 /* UltraSparc extensions.  Still unused, but will be eventually.  */
 127 typedef struct {
 128         unsigned int pr_type;
 129         unsigned int pr_align;
 130         union {
 131                 struct {
 132                         union {
 133                                 unsigned int    pr_regs[32];
 134                                 unsigned long   pr_dregs[16];
 135                                 long double     pr_qregs[8];
 136                         } pr_xfr;
 137                 } pr_v8p;
 138                 unsigned int    pr_xfsr;
 139                 unsigned int    pr_fprs;
 140                 unsigned int    pr_xg[8];
 141                 unsigned int    pr_xo[8];
 142                 unsigned long   pr_tstate;
 143                 unsigned int    pr_filler[8];
 144         } pr_un;
 145 } elf_xregset_t;
 146
 147 /*
 148  * This is used to ensure we don't load something for the wrong architecture.
 149  */
 150 #define elf_check_arch(x)               ((x)->e_machine == ELF_ARCH)
 151 #define compat_elf_check_arch(x)        ((x)->e_machine == EM_SPARC || \
 152                                          (x)->e_machine == EM_SPARC32PLUS)
 153 #define compat_start_thread             start_thread32
 154
 155 #define ELF_EXEC_PAGESIZE       PAGE_SIZE
 156
 157 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
 158    use of this is to invoke "./ld.so someprog" to test out a new version of
 159    the loader.  We need to make sure that it is out of the way of the program
 160    that it will "exec", and that there is sufficient room for the brk.  */
 161
 162 #define ELF_ET_DYN_BASE         0x0000010000000000UL
 163 #define COMPAT_ELF_ET_DYN_BASE  0x0000000070000000UL
 164
 165
 166 /* This yields a mask that user programs can use to figure out what
 167    instruction set this cpu supports.  */
 168
 169 /* On Ultra, we support all of the v8 capabilities. */
 170 static inline unsigned int sparc64_elf_hwcap(void)
 171 {
 172         unsigned int cap = (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR |
 173                             HWCAP_SPARC_SWAP | HWCAP_SPARC_MULDIV |
 174                             HWCAP_SPARC_V9);
 175
 176         if (tlb_type == cheetah || tlb_type == cheetah_plus)
 177                 cap |= HWCAP_SPARC_ULTRA3;
 178         else if (tlb_type == hypervisor) {
 179                 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA1 ||
 180                     sun4v_chip_type == SUN4V_CHIP_NIAGARA2)
 181                         cap |= HWCAP_SPARC_BLKINIT;
 182                 if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2)
 183                         cap |= HWCAP_SPARC_N2;
 184         }
 185
 186         return cap;
 187 }
 188
 189 #define ELF_HWCAP       sparc64_elf_hwcap();
 190
 191 /* This yields a string that ld.so will use to load implementation
 192    specific libraries for optimization.  This is more specific in
 193    intent than poking at uname or /proc/cpuinfo.  */
 194
 195 #define ELF_PLATFORM    (NULL)
 196
 197 #define SET_PERSONALITY(ex)                             \
 198 do {    unsigned long new_flags = current_thread_info()->flags; \
 199         new_flags &= _TIF_32BIT;                        \
 200         if ((ex).e_ident[EI_CLASS] == ELFCLASS32)       \
 201                 new_flags |= _TIF_32BIT;                \
 202         else                                            \
 203                 new_flags &= ~_TIF_32BIT;               \
 204         if ((current_thread_info()->flags & _TIF_32BIT) \
 205             != new_flags)                               \
 206                 set_thread_flag(TIF_ABI_PENDING);       \
 207         else                                            \
 208                 clear_thread_flag(TIF_ABI_PENDING);     \
 209         /* flush_thread will update pgd cache */        \
 210         if (personality(current->personality) != PER_LINUX32)   \
 211                 set_personality(PER_LINUX |             \
 212                         (current->personality & (~PER_MASK)));  \
 213 } while (0)
 214
 215 #endif /* !(__ASM_SPARC64_ELF_H) */