arch/parisc/include/asm/elf.h

   1 #ifndef __ASMPARISC_ELF_H
   2 #define __ASMPARISC_ELF_H
   3
   4 /*
   5  * ELF register definitions..
   6  */
   7
   8 #include <asm/ptrace.h>
   9
  10 #define EM_PARISC 15
  11
  12 /* HPPA specific definitions.  */
  13
  14 /* Legal values for e_flags field of Elf32_Ehdr.  */
  15
  16 #define EF_PARISC_TRAPNIL       0x00010000 /* Trap nil pointer dereference.  */
  17 #define EF_PARISC_EXT           0x00020000 /* Program uses arch. extensions. */
  18 #define EF_PARISC_LSB           0x00040000 /* Program expects little endian. */
  19 #define EF_PARISC_WIDE          0x00080000 /* Program expects wide mode.  */
  20 #define EF_PARISC_NO_KABP       0x00100000 /* No kernel assisted branch
  21                                               prediction.  */
  22 #define EF_PARISC_LAZYSWAP      0x00400000 /* Allow lazy swapping.  */
  23 #define EF_PARISC_ARCH          0x0000ffff /* Architecture version.  */
  24
  25 /* Defined values for `e_flags & EF_PARISC_ARCH' are:  */
  26
  27 #define EFA_PARISC_1_0              0x020b /* PA-RISC 1.0 big-endian.  */
  28 #define EFA_PARISC_1_1              0x0210 /* PA-RISC 1.1 big-endian.  */
  29 #define EFA_PARISC_2_0              0x0214 /* PA-RISC 2.0 big-endian.  */
  30
  31 /* Additional section indices.  */
  32
  33 #define SHN_PARISC_ANSI_COMMON  0xff00     /* Section for tenatively declared
  34                                               symbols in ANSI C.  */
  35 #define SHN_PARISC_HUGE_COMMON  0xff01     /* Common blocks in huge model.  */
  36
  37 /* Legal values for sh_type field of Elf32_Shdr.  */
  38
  39 #define SHT_PARISC_EXT          0x70000000 /* Contains product specific ext. */
  40 #define SHT_PARISC_UNWIND       0x70000001 /* Unwind information.  */
  41 #define SHT_PARISC_DOC          0x70000002 /* Debug info for optimized code. */
  42
  43 /* Legal values for sh_flags field of Elf32_Shdr.  */
  44
  45 #define SHF_PARISC_SHORT        0x20000000 /* Section with short addressing. */
  46 #define SHF_PARISC_HUGE         0x40000000 /* Section far from gp.  */
  47 #define SHF_PARISC_SBP          0x80000000 /* Static branch prediction code. */
  48
  49 /* Legal values for ST_TYPE subfield of st_info (symbol type).  */
  50
  51 #define STT_PARISC_MILLICODE    13      /* Millicode function entry point.  */
  52
  53 #define STT_HP_OPAQUE           (STT_LOOS + 0x1)
  54 #define STT_HP_STUB             (STT_LOOS + 0x2)
  55
  56 /* HPPA relocs.  */
  57
  58 #define R_PARISC_NONE           0       /* No reloc.  */
  59 #define R_PARISC_DIR32          1       /* Direct 32-bit reference.  */
  60 #define R_PARISC_DIR21L         2       /* Left 21 bits of eff. address.  */
  61 #define R_PARISC_DIR17R         3       /* Right 17 bits of eff. address.  */
  62 #define R_PARISC_DIR17F         4       /* 17 bits of eff. address.  */
  63 #define R_PARISC_DIR14R         6       /* Right 14 bits of eff. address.  */
  64 #define R_PARISC_PCREL32        9       /* 32-bit rel. address.  */
  65 #define R_PARISC_PCREL21L       10      /* Left 21 bits of rel. address.  */
  66 #define R_PARISC_PCREL17R       11      /* Right 17 bits of rel. address.  */
  67 #define R_PARISC_PCREL17F       12      /* 17 bits of rel. address.  */
  68 #define R_PARISC_PCREL14R       14      /* Right 14 bits of rel. address.  */
  69 #define R_PARISC_DPREL21L       18      /* Left 21 bits of rel. address.  */
  70 #define R_PARISC_DPREL14R       22      /* Right 14 bits of rel. address.  */
  71 #define R_PARISC_GPREL21L       26      /* GP-relative, left 21 bits.  */
  72 #define R_PARISC_GPREL14R       30      /* GP-relative, right 14 bits.  */
  73 #define R_PARISC_LTOFF21L       34      /* LT-relative, left 21 bits.  */
  74 #define R_PARISC_LTOFF14R       38      /* LT-relative, right 14 bits.  */
  75 #define R_PARISC_SECREL32       41      /* 32 bits section rel. address.  */
  76 #define R_PARISC_SEGBASE        48      /* No relocation, set segment base.  */
  77 #define R_PARISC_SEGREL32       49      /* 32 bits segment rel. address.  */
  78 #define R_PARISC_PLTOFF21L      50      /* PLT rel. address, left 21 bits.  */
  79 #define R_PARISC_PLTOFF14R      54      /* PLT rel. address, right 14 bits.  */
  80 #define R_PARISC_LTOFF_FPTR32   57      /* 32 bits LT-rel. function pointer. */
  81 #define R_PARISC_LTOFF_FPTR21L  58      /* LT-rel. fct ptr, left 21 bits. */
  82 #define R_PARISC_LTOFF_FPTR14R  62      /* LT-rel. fct ptr, right 14 bits. */
  83 #define R_PARISC_FPTR64         64      /* 64 bits function address.  */
  84 #define R_PARISC_PLABEL32       65      /* 32 bits function address.  */
  85 #define R_PARISC_PCREL64        72      /* 64 bits PC-rel. address.  */
  86 #define R_PARISC_PCREL22F       74      /* 22 bits PC-rel. address.  */
  87 #define R_PARISC_PCREL14WR      75      /* PC-rel. address, right 14 bits.  */
  88 #define R_PARISC_PCREL14DR      76      /* PC rel. address, right 14 bits.  */
  89 #define R_PARISC_PCREL16F       77      /* 16 bits PC-rel. address.  */
  90 #define R_PARISC_PCREL16WF      78      /* 16 bits PC-rel. address.  */
  91 #define R_PARISC_PCREL16DF      79      /* 16 bits PC-rel. address.  */
  92 #define R_PARISC_DIR64          80      /* 64 bits of eff. address.  */
  93 #define R_PARISC_DIR14WR        83      /* 14 bits of eff. address.  */
  94 #define R_PARISC_DIR14DR        84      /* 14 bits of eff. address.  */
  95 #define R_PARISC_DIR16F         85      /* 16 bits of eff. address.  */
  96 #define R_PARISC_DIR16WF        86      /* 16 bits of eff. address.  */
  97 #define R_PARISC_DIR16DF        87      /* 16 bits of eff. address.  */
  98 #define R_PARISC_GPREL64        88      /* 64 bits of GP-rel. address.  */
  99 #define R_PARISC_GPREL14WR      91      /* GP-rel. address, right 14 bits.  */
 100 #define R_PARISC_GPREL14DR      92      /* GP-rel. address, right 14 bits.  */
 101 #define R_PARISC_GPREL16F       93      /* 16 bits GP-rel. address.  */
 102 #define R_PARISC_GPREL16WF      94      /* 16 bits GP-rel. address.  */
 103 #define R_PARISC_GPREL16DF      95      /* 16 bits GP-rel. address.  */
 104 #define R_PARISC_LTOFF64        96      /* 64 bits LT-rel. address.  */
 105 #define R_PARISC_LTOFF14WR      99      /* LT-rel. address, right 14 bits.  */
 106 #define R_PARISC_LTOFF14DR      100     /* LT-rel. address, right 14 bits.  */
 107 #define R_PARISC_LTOFF16F       101     /* 16 bits LT-rel. address.  */
 108 #define R_PARISC_LTOFF16WF      102     /* 16 bits LT-rel. address.  */
 109 #define R_PARISC_LTOFF16DF      103     /* 16 bits LT-rel. address.  */
 110 #define R_PARISC_SECREL64       104     /* 64 bits section rel. address.  */
 111 #define R_PARISC_SEGREL64       112     /* 64 bits segment rel. address.  */
 112 #define R_PARISC_PLTOFF14WR     115     /* PLT-rel. address, right 14 bits.  */
 113 #define R_PARISC_PLTOFF14DR     116     /* PLT-rel. address, right 14 bits.  */
 114 #define R_PARISC_PLTOFF16F      117     /* 16 bits LT-rel. address.  */
 115 #define R_PARISC_PLTOFF16WF     118     /* 16 bits PLT-rel. address.  */
 116 #define R_PARISC_PLTOFF16DF     119     /* 16 bits PLT-rel. address.  */
 117 #define R_PARISC_LTOFF_FPTR64   120     /* 64 bits LT-rel. function ptr.  */
 118 #define R_PARISC_LTOFF_FPTR14WR 123     /* LT-rel. fct. ptr., right 14 bits. */
 119 #define R_PARISC_LTOFF_FPTR14DR 124     /* LT-rel. fct. ptr., right 14 bits. */
 120 #define R_PARISC_LTOFF_FPTR16F  125     /* 16 bits LT-rel. function ptr.  */
 121 #define R_PARISC_LTOFF_FPTR16WF 126     /* 16 bits LT-rel. function ptr.  */
 122 #define R_PARISC_LTOFF_FPTR16DF 127     /* 16 bits LT-rel. function ptr.  */
 123 #define R_PARISC_LORESERVE      128
 124 #define R_PARISC_COPY           128     /* Copy relocation.  */
 125 #define R_PARISC_IPLT           129     /* Dynamic reloc, imported PLT */
 126 #define R_PARISC_EPLT           130     /* Dynamic reloc, exported PLT */
 127 #define R_PARISC_TPREL32        153     /* 32 bits TP-rel. address.  */
 128 #define R_PARISC_TPREL21L       154     /* TP-rel. address, left 21 bits.  */
 129 #define R_PARISC_TPREL14R       158     /* TP-rel. address, right 14 bits.  */
 130 #define R_PARISC_LTOFF_TP21L    162     /* LT-TP-rel. address, left 21 bits. */
 131 #define R_PARISC_LTOFF_TP14R    166     /* LT-TP-rel. address, right 14 bits.*/
 132 #define R_PARISC_LTOFF_TP14F    167     /* 14 bits LT-TP-rel. address.  */
 133 #define R_PARISC_TPREL64        216     /* 64 bits TP-rel. address.  */
 134 #define R_PARISC_TPREL14WR      219     /* TP-rel. address, right 14 bits.  */
 135 #define R_PARISC_TPREL14DR      220     /* TP-rel. address, right 14 bits.  */
 136 #define R_PARISC_TPREL16F       221     /* 16 bits TP-rel. address.  */
 137 #define R_PARISC_TPREL16WF      222     /* 16 bits TP-rel. address.  */
 138 #define R_PARISC_TPREL16DF      223     /* 16 bits TP-rel. address.  */
 139 #define R_PARISC_LTOFF_TP64     224     /* 64 bits LT-TP-rel. address.  */
 140 #define R_PARISC_LTOFF_TP14WR   227     /* LT-TP-rel. address, right 14 bits.*/
 141 #define R_PARISC_LTOFF_TP14DR   228     /* LT-TP-rel. address, right 14 bits.*/
 142 #define R_PARISC_LTOFF_TP16F    229     /* 16 bits LT-TP-rel. address.  */
 143 #define R_PARISC_LTOFF_TP16WF   230     /* 16 bits LT-TP-rel. address.  */
 144 #define R_PARISC_LTOFF_TP16DF   231     /* 16 bits LT-TP-rel. address.  */
 145 #define R_PARISC_HIRESERVE      255
 146
 147 #define PA_PLABEL_FDESC         0x02    /* bit set if PLABEL points to
 148                                          * a function descriptor, not
 149                                          * an address */
 150
 151 /* The following are PA function descriptors
 152  *
 153  * addr:        the absolute address of the function
 154  * gp:          either the data pointer (r27) for non-PIC code or the
 155  *              the PLT pointer (r19) for PIC code */
 156
 157 /* Format for the Elf32 Function descriptor */
 158 typedef struct elf32_fdesc {
 159         __u32   addr;
 160         __u32   gp;
 161 } Elf32_Fdesc;
 162
 163 /* Format for the Elf64 Function descriptor */
 164 typedef struct elf64_fdesc {
 165         __u64   dummy[2]; /* FIXME: nothing uses these, why waste
 166                            * the space */
 167         __u64   addr;
 168         __u64   gp;
 169 } Elf64_Fdesc;
 170
 171 #ifdef __KERNEL__
 172
 173 #ifdef CONFIG_64BIT
 174 #define Elf_Fdesc       Elf64_Fdesc
 175 #else
 176 #define Elf_Fdesc       Elf32_Fdesc
 177 #endif /*CONFIG_64BIT*/
 178
 179 #endif /*__KERNEL__*/
 180
 181 /* Legal values for p_type field of Elf32_Phdr/Elf64_Phdr.  */
 182
 183 #define PT_HP_TLS               (PT_LOOS + 0x0)
 184 #define PT_HP_CORE_NONE         (PT_LOOS + 0x1)
 185 #define PT_HP_CORE_VERSION      (PT_LOOS + 0x2)
 186 #define PT_HP_CORE_KERNEL       (PT_LOOS + 0x3)
 187 #define PT_HP_CORE_COMM         (PT_LOOS + 0x4)
 188 #define PT_HP_CORE_PROC         (PT_LOOS + 0x5)
 189 #define PT_HP_CORE_LOADABLE     (PT_LOOS + 0x6)
 190 #define PT_HP_CORE_STACK        (PT_LOOS + 0x7)
 191 #define PT_HP_CORE_SHM          (PT_LOOS + 0x8)
 192 #define PT_HP_CORE_MMF          (PT_LOOS + 0x9)
 193 #define PT_HP_PARALLEL          (PT_LOOS + 0x10)
 194 #define PT_HP_FASTBIND          (PT_LOOS + 0x11)
 195 #define PT_HP_OPT_ANNOT         (PT_LOOS + 0x12)
 196 #define PT_HP_HSL_ANNOT         (PT_LOOS + 0x13)
 197 #define PT_HP_STACK             (PT_LOOS + 0x14)
 198
 199 #define PT_PARISC_ARCHEXT       0x70000000
 200 #define PT_PARISC_UNWIND        0x70000001
 201
 202 /* Legal values for p_flags field of Elf32_Phdr/Elf64_Phdr.  */
 203
 204 #define PF_PARISC_SBP           0x08000000
 205
 206 #define PF_HP_PAGE_SIZE         0x00100000
 207 #define PF_HP_FAR_SHARED        0x00200000
 208 #define PF_HP_NEAR_SHARED       0x00400000
 209 #define PF_HP_CODE              0x01000000
 210 #define PF_HP_MODIFY            0x02000000
 211 #define PF_HP_LAZYSWAP          0x04000000
 212 #define PF_HP_SBP               0x08000000
 213
 214 /*
 215  * The following definitions are those for 32-bit ELF binaries on a 32-bit
 216  * kernel and for 64-bit binaries on a 64-bit kernel.  To run 32-bit binaries
 217  * on a 64-bit kernel, arch/parisc/kernel/binfmt_elf32.c defines these
 218  * macros appropriately and then #includes binfmt_elf.c, which then includes
 219  * this file.
 220  */
 221 #ifndef ELF_CLASS
 222
 223 /*
 224  * This is used to ensure we don't load something for the wrong architecture.
 225  *
 226  * Note that this header file is used by default in fs/binfmt_elf.c. So
 227  * the following macros are for the default case. However, for the 64
 228  * bit kernel we also support 32 bit parisc binaries. To do that
 229  * arch/parisc/kernel/binfmt_elf32.c defines its own set of these
 230  * macros, and then it includes fs/binfmt_elf.c to provide an alternate
 231  * elf binary handler for 32 bit binaries (on the 64 bit kernel).
 232  */
 233 #ifdef CONFIG_64BIT
 234 #define ELF_CLASS   ELFCLASS64
 235 #else
 236 #define ELF_CLASS       ELFCLASS32
 237 #endif
 238
 239 typedef unsigned long elf_greg_t;
 240
 241 /*
 242  * This yields a string that ld.so will use to load implementation
 243  * specific libraries for optimization.  This is more specific in
 244  * intent than poking at uname or /proc/cpuinfo.
 245  */
 246
 247 #define ELF_PLATFORM  ("PARISC\0")
 248
 249 #define SET_PERSONALITY(ex) \
 250         current->personality = PER_LINUX; \
 251         current->thread.map_base = DEFAULT_MAP_BASE; \
 252         current->thread.task_size = DEFAULT_TASK_SIZE \
 253
 254 /*
 255  * Fill in general registers in a core dump.  This saves pretty
 256  * much the same registers as hp-ux, although in a different order.
 257  * Registers marked # below are not currently saved in pt_regs, so
 258  * we use their current values here.
 259  *
 260  *      gr0..gr31
 261  *      sr0..sr7
 262  *      iaoq0..iaoq1
 263  *      iasq0..iasq1
 264  *      cr11 (sar)
 265  *      cr19 (iir)
 266  *      cr20 (isr)
 267  *      cr21 (ior)
 268  *  #   cr22 (ipsw)
 269  *  #   cr0 (recovery counter)
 270  *  #   cr24..cr31 (temporary registers)
 271  *  #   cr8,9,12,13 (protection IDs)
 272  *  #   cr10 (scr/ccr)
 273  *  #   cr15 (ext int enable mask)
 274  *
 275  */
 276
 277 #define ELF_CORE_COPY_REGS(dst, pt)     \
 278         memset(dst, 0, sizeof(dst));    /* don't leak any "random" bits */ \
 279         memcpy(dst + 0, pt->gr, 32 * sizeof(elf_greg_t)); \
 280         memcpy(dst + 32, pt->sr, 8 * sizeof(elf_greg_t)); \
 281         memcpy(dst + 40, pt->iaoq, 2 * sizeof(elf_greg_t)); \
 282         memcpy(dst + 42, pt->iasq, 2 * sizeof(elf_greg_t)); \
 283         dst[44] = pt->sar;   dst[45] = pt->iir; \
 284         dst[46] = pt->isr;   dst[47] = pt->ior; \
 285         dst[48] = mfctl(22); dst[49] = mfctl(0); \
 286         dst[50] = mfctl(24); dst[51] = mfctl(25); \
 287         dst[52] = mfctl(26); dst[53] = mfctl(27); \
 288         dst[54] = mfctl(28); dst[55] = mfctl(29); \
 289         dst[56] = mfctl(30); dst[57] = mfctl(31); \
 290         dst[58] = mfctl( 8); dst[59] = mfctl( 9); \
 291         dst[60] = mfctl(12); dst[61] = mfctl(13); \
 292         dst[62] = mfctl(10); dst[63] = mfctl(15);
 293
 294 #endif /* ! ELF_CLASS */
 295
 296 #define ELF_NGREG 80    /* We only need 64 at present, but leave space
 297                            for expansion. */
 298 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
 299
 300 #define ELF_NFPREG 32
 301 typedef double elf_fpreg_t;
 302 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
 303
 304 struct task_struct;
 305
 306 extern int dump_task_fpu (struct task_struct *, elf_fpregset_t *);
 307 #define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) dump_task_fpu(tsk, elf_fpregs)
 308
 309 struct pt_regs; /* forward declaration... */
 310
 311
 312 #define elf_check_arch(x) ((x)->e_machine == EM_PARISC && (x)->e_ident[EI_CLASS] == ELF_CLASS)
 313
 314 /*
 315  * These are used to set parameters in the core dumps.
 316  */
 317 #define ELF_DATA        ELFDATA2MSB
 318 #define ELF_ARCH        EM_PARISC
 319 #define ELF_OSABI       ELFOSABI_LINUX
 320
 321 /* %r23 is set by ld.so to a pointer to a function which might be
 322    registered using atexit.  This provides a means for the dynamic
 323    linker to call DT_FINI functions for shared libraries that have
 324    been loaded before the code runs.
 325
 326    So that we can use the same startup file with static executables,
 327    we start programs with a value of 0 to indicate that there is no
 328    such function.  */
 329 #define ELF_PLAT_INIT(_r, load_addr)       _r->gr[23] = 0
 330
 331 #define USE_ELF_CORE_DUMP
 332 #define ELF_EXEC_PAGESIZE       4096
 333
 334 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
 335    use of this is to invoke "./ld.so someprog" to test out a new version of
 336    the loader.  We need to make sure that it is out of the way of the program
 337    that it will "exec", and that there is sufficient room for the brk.
 338
 339    (2 * TASK_SIZE / 3) turns into something undefined when run through a
 340    32 bit preprocessor and in some cases results in the kernel trying to map
 341    ld.so to the kernel virtual base. Use a sane value instead. /Jes
 342   */
 343
 344 #define ELF_ET_DYN_BASE         (TASK_UNMAPPED_BASE + 0x01000000)
 345
 346 /* This yields a mask that user programs can use to figure out what
 347    instruction set this CPU supports.  This could be done in user space,
 348    but it's not easy, and we've already done it here.  */
 349
 350 #define ELF_HWCAP       0
 351
 352 #endif