LXR linux/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 */
 158typedef struct elf32_fdesc {
 159        __u32   addr;
 160        __u32   gp;
 161} Elf32_Fdesc;
 162
 163/* Format for the Elf64 Function descriptor */
 164typedef 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/* Legal values for p_type field of Elf32_Phdr/Elf64_Phdr.  */
 172
 173#define PT_HP_TLS               (PT_LOOS + 0x0)
 174#define PT_HP_CORE_NONE         (PT_LOOS + 0x1)
 175#define PT_HP_CORE_VERSION      (PT_LOOS + 0x2)
 176#define PT_HP_CORE_KERNEL       (PT_LOOS + 0x3)
 177#define PT_HP_CORE_COMM         (PT_LOOS + 0x4)
 178#define PT_HP_CORE_PROC         (PT_LOOS + 0x5)
 179#define PT_HP_CORE_LOADABLE     (PT_LOOS + 0x6)
 180#define PT_HP_CORE_STACK        (PT_LOOS + 0x7)
 181#define PT_HP_CORE_SHM          (PT_LOOS + 0x8)
 182#define PT_HP_CORE_MMF          (PT_LOOS + 0x9)
 183#define PT_HP_PARALLEL          (PT_LOOS + 0x10)
 184#define PT_HP_FASTBIND          (PT_LOOS + 0x11)
 185#define PT_HP_OPT_ANNOT         (PT_LOOS + 0x12)
 186#define PT_HP_HSL_ANNOT         (PT_LOOS + 0x13)
 187#define PT_HP_STACK             (PT_LOOS + 0x14)
 188
 189#define PT_PARISC_ARCHEXT       0x70000000
 190#define PT_PARISC_UNWIND        0x70000001
 191
 192/* Legal values for p_flags field of Elf32_Phdr/Elf64_Phdr.  */
 193
 194#define PF_PARISC_SBP           0x08000000
 195
 196#define PF_HP_PAGE_SIZE         0x00100000
 197#define PF_HP_FAR_SHARED        0x00200000
 198#define PF_HP_NEAR_SHARED       0x00400000
 199#define PF_HP_CODE              0x01000000
 200#define PF_HP_MODIFY            0x02000000
 201#define PF_HP_LAZYSWAP          0x04000000
 202#define PF_HP_SBP               0x08000000
 203
 204/*
 205 * The following definitions are those for 32-bit ELF binaries on a 32-bit
 206 * kernel and for 64-bit binaries on a 64-bit kernel.  To run 32-bit binaries
 207 * on a 64-bit kernel, arch/parisc/kernel/binfmt_elf32.c defines these
 208 * macros appropriately and then #includes binfmt_elf.c, which then includes
 209 * this file.
 210 */
 211#ifndef ELF_CLASS
 212
 213/*
 214 * This is used to ensure we don't load something for the wrong architecture.
 215 *
 216 * Note that this header file is used by default in fs/binfmt_elf.c. So
 217 * the following macros are for the default case. However, for the 64
 218 * bit kernel we also support 32 bit parisc binaries. To do that
 219 * arch/parisc/kernel/binfmt_elf32.c defines its own set of these
 220 * macros, and then it includes fs/binfmt_elf.c to provide an alternate
 221 * elf binary handler for 32 bit binaries (on the 64 bit kernel).
 222 */
 223#ifdef CONFIG_64BIT
 224#define ELF_CLASS   ELFCLASS64
 225#else
 226#define ELF_CLASS       ELFCLASS32
 227#endif
 228
 229typedef unsigned long elf_greg_t;
 230
 231/*
 232 * This yields a string that ld.so will use to load implementation
 233 * specific libraries for optimization.  This is more specific in
 234 * intent than poking at uname or /proc/cpuinfo.
 235 */
 236
 237#define ELF_PLATFORM  ("PARISC\0")
 238
 239#define SET_PERSONALITY(ex) \
 240        current->personality = PER_LINUX; \
 241        current->thread.map_base = DEFAULT_MAP_BASE; \
 242        current->thread.task_size = DEFAULT_TASK_SIZE \
 243
 244/*
 245 * Fill in general registers in a core dump.  This saves pretty
 246 * much the same registers as hp-ux, although in a different order.
 247 * Registers marked # below are not currently saved in pt_regs, so
 248 * we use their current values here.
 249 *
 250 *      gr0..gr31
 251 *      sr0..sr7
 252 *      iaoq0..iaoq1
 253 *      iasq0..iasq1
 254 *      cr11 (sar)
 255 *      cr19 (iir)
 256 *      cr20 (isr)
 257 *      cr21 (ior)
 258 *  #   cr22 (ipsw)
 259 *  #   cr0 (recovery counter)
 260 *  #   cr24..cr31 (temporary registers)
 261 *  #   cr8,9,12,13 (protection IDs)
 262 *  #   cr10 (scr/ccr)
 263 *  #   cr15 (ext int enable mask)
 264 *
 265 */
 266
 267#define ELF_CORE_COPY_REGS(dst, pt)     \
 268        memset(dst, 0, sizeof(dst));    /* don't leak any "random" bits */ \
 269        memcpy(dst + 0, pt->gr, 32 * sizeof(elf_greg_t)); \
 270        memcpy(dst + 32, pt->sr, 8 * sizeof(elf_greg_t)); \
 271        memcpy(dst + 40, pt->iaoq, 2 * sizeof(elf_greg_t)); \
 272        memcpy(dst + 42, pt->iasq, 2 * sizeof(elf_greg_t)); \
 273        dst[44] = pt->sar;   dst[45] = pt->iir; \
 274        dst[46] = pt->isr;   dst[47] = pt->ior; \
 275        dst[48] = mfctl(22); dst[49] = mfctl(0); \
 276        dst[50] = mfctl(24); dst[51] = mfctl(25); \
 277        dst[52] = mfctl(26); dst[53] = mfctl(27); \
 278        dst[54] = mfctl(28); dst[55] = mfctl(29); \
 279        dst[56] = mfctl(30); dst[57] = mfctl(31); \
 280        dst[58] = mfctl( 8); dst[59] = mfctl( 9); \
 281        dst[60] = mfctl(12); dst[61] = mfctl(13); \
 282        dst[62] = mfctl(10); dst[63] = mfctl(15);
 283
 284#endif /* ! ELF_CLASS */
 285
 286#define ELF_NGREG 80    /* We only need 64 at present, but leave space
 287                           for expansion. */
 288typedef elf_greg_t elf_gregset_t[ELF_NGREG];
 289
 290#define ELF_NFPREG 32
 291typedef double elf_fpreg_t;
 292typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
 293
 294struct task_struct;
 295
 296extern int dump_task_fpu (struct task_struct *, elf_fpregset_t *);
 297#define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) dump_task_fpu(tsk, elf_fpregs)
 298
 299struct pt_regs; /* forward declaration... */
 300
 301
 302#define elf_check_arch(x) ((x)->e_machine == EM_PARISC && (x)->e_ident[EI_CLASS] == ELF_CLASS)
 303
 304/*
 305 * These are used to set parameters in the core dumps.
 306 */
 307#define ELF_DATA        ELFDATA2MSB
 308#define ELF_ARCH        EM_PARISC
 309#define ELF_OSABI       ELFOSABI_LINUX
 310
 311/* %r23 is set by ld.so to a pointer to a function which might be 
 312   registered using atexit.  This provides a means for the dynamic
 313   linker to call DT_FINI functions for shared libraries that have
 314   been loaded before the code runs.
 315
 316   So that we can use the same startup file with static executables,
 317   we start programs with a value of 0 to indicate that there is no
 318   such function.  */
 319#define ELF_PLAT_INIT(_r, load_addr)       _r->gr[23] = 0
 320
 321#define USE_ELF_CORE_DUMP
 322#define ELF_EXEC_PAGESIZE       4096
 323
 324/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
 325   use of this is to invoke "./ld.so someprog" to test out a new version of
 326   the loader.  We need to make sure that it is out of the way of the program
 327   that it will "exec", and that there is sufficient room for the brk.
 328
 329   (2 * TASK_SIZE / 3) turns into something undefined when run through a
 330   32 bit preprocessor and in some cases results in the kernel trying to map
 331   ld.so to the kernel virtual base. Use a sane value instead. /Jes 
 332  */
 333
 334#define ELF_ET_DYN_BASE         (TASK_UNMAPPED_BASE + 0x01000000)
 335
 336/* This yields a mask that user programs can use to figure out what
 337   instruction set this CPU supports.  This could be done in user space,
 338   but it's not easy, and we've already done it here.  */
 339
 340#define ELF_HWCAP       0
 341
 342#endif
 343