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dl-machine.h

/* Machine-dependent ELF dynamic relocation inline functions.  IA-64 version.
   Copyright (C) 1995-1997, 2000-2002, 2003 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#ifndef dl_machine_h
#define dl_machine_h 1

#define ELF_MACHINE_NAME "ia64"

#include <assert.h>
#include <string.h>
#include <link.h>
#include <errno.h>
#include <tls.h>

/* Translate a processor specific dynamic tag to the index
   in l_info array.  */
#define DT_IA_64(x) (DT_IA_64_##x - DT_LOPROC + DT_NUM)

/* There are currently 123 dynamic symbols in ld.so.
   IA64_BOOT_FPTR_TABLE_LEN needs to be at least that big.  */
#define IA64_BOOT_FPTR_TABLE_LEN    200

/* An FDESC is a function descriptor.  */

struct ia64_fdesc
  {
    Elf64_Addr ip;      /* code entry point */
    Elf64_Addr gp;      /* global pointer */
  };

struct ia64_fdesc_table
  {
    struct ia64_fdesc_table *next;
    unsigned int len;               /* # of entries in fdesc table */
    volatile unsigned int first_unused;   /* index of first available entry */
    struct ia64_fdesc fdesc[0];
  };

extern Elf64_Addr __ia64_make_fptr (struct link_map *, const Elf64_Sym *,
                            Elf64_Addr);

static inline void
__ia64_init_bootstrap_fdesc_table (struct link_map *map)
{
  Elf64_Addr *boot_table;

  /* careful: this will be called before got has been relocated... */
  asm (";; addl %0 = @gprel (__ia64_boot_fptr_table), gp" : "=r"(boot_table));

  map->l_mach.fptr_table_len = IA64_BOOT_FPTR_TABLE_LEN;
  map->l_mach.fptr_table = boot_table;
}

#define ELF_MACHINE_BEFORE_RTLD_RELOC(dynamic_info)         \
      __ia64_init_bootstrap_fdesc_table (&bootstrap_map);

/* Return nonzero iff ELF header is compatible with the running host.  */
static inline int
elf_machine_matches_host (const Elf64_Ehdr *ehdr)
{
  return ehdr->e_machine == EM_IA_64;
}


/* Return the link-time address of _DYNAMIC.  */
static inline Elf64_Addr
elf_machine_dynamic (void)
{
  Elf64_Addr *p;

  __asm__ (
      ".section .sdata\n"
      "     .type __dynamic_ltv#, @object\n"
      "     .size __dynamic_ltv#, 8\n"
      "__dynamic_ltv:\n"
      "     data8 @ltv(_DYNAMIC#)\n"
      ".previous\n"
      "     addl  %0 = @gprel(__dynamic_ltv#), gp ;;"
      : "=r" (p));

  return *p;
}


/* Return the run-time load address of the shared object.  */
static inline Elf64_Addr
elf_machine_load_address (void)
{
  Elf64_Addr ip;
  int *p;

  __asm__ (
      "1:   mov %0 = ip\n"
      ".section .sdata\n"
      "2:   data4 @ltv(1b)\n"
      "       .align 8\n"
      ".previous\n"
      "     addl  %1 = @gprel(2b), gp ;;"
      : "=r" (ip), "=r" (p));

  return ip - (Elf64_Addr) *p;
}

/* Set up the loaded object described by L so its unrelocated PLT
   entries will jump to the on-demand fixup code in dl-runtime.c.  */

static inline int
elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
{
  extern void _dl_runtime_resolve (void);
  extern void _dl_runtime_profile (void);

  if (lazy)
    {
      register Elf64_Addr gp __asm__ ("gp");
      Elf64_Addr *reserve, doit;

      /*
       * Careful with the typecast here or it will try to add l-l_addr
       * pointer elements
       */
      reserve = ((Elf64_Addr *)
             (l->l_info[DT_IA_64 (PLT_RESERVE)]->d_un.d_ptr + l->l_addr));
      /* Identify this shared object.  */
      reserve[0] = (Elf64_Addr) l;

      /* This function will be called to perform the relocation.  */
      if (!profile)
      doit = (Elf64_Addr) ((struct ia64_fdesc *) &_dl_runtime_resolve)->ip;
      else
      {
        if (_dl_name_match_p (GL(dl_profile), l))
          {
            /* This is the object we are looking for.  Say that we really
             want profiling and the timers are started.  */
            GL(dl_profile_map) = l;
          }
        doit = (Elf64_Addr) ((struct ia64_fdesc *) &_dl_runtime_profile)->ip;
      }

      reserve[1] = doit;
      reserve[2] = gp;
    }

  return lazy;
}


/*
   This code is used in dl-runtime.c to call the `fixup' function
   and then redirect to the address it returns. `fixup()' takes two
   arguments, however profile_fixup() takes three.

   The ABI specifies that we will never see more than 8 input
   registers to a function call, thus it is safe to simply allocate
   those, and simpler than playing stack games.
                                                   - 12/09/99 Jes
 */
#define TRAMPOLINE_TEMPLATE(tramp_name, fixup_name)                    \
  extern void tramp_name (void);                                 \
  asm (                                                          \
"     .global " #tramp_name "#\n"                                \
"     .proc " #tramp_name "#\n"                                  \
#tramp_name ":\n"                                          \
"     { .mmi\n"                                            \
"       .prologue\n"                                             \
"       .save ar.pfs, r40\n"                                     \
"       alloc loc0 = ar.pfs, 8, 6, 3, 0\n"                             \
"       adds r2 = -144, r12\n"                                   \
"       adds r3 = -128, r12\n"                                   \
"     }\n"                                                 \
"     { .mii\n"                                            \
"       .fframe 160\n"                                     \
"       adds r12 = -160, r12\n"                                  \
"       .save rp, r41\n"                                         \
"       mov loc1 = b0\n"                                         \
"       .body\n"                                           \
"       mov out2 = b0         /* needed by fixup_profile */\n"         \
"       ;;\n"                                                    \
"     }\n"                                                 \
"     { .mfb\n"                                            \
"       mov loc2 = r8         /* preserve struct value register */\n"        \
"       nop.f 0\n"                                               \
"       nop.b 0\n"                                               \
"     }\n"                                                 \
"     { .mii\n"                                            \
"       mov loc3 = r9         /* preserve language specific register */\n" \
"       mov loc4 = r10  /* preserve language specific register */\n" \
"       mov loc5 = r11  /* preserve language specific register */\n" \
"     }\n"                                                 \
"     { .mmi\n"                                            \
"       stf.spill [r2] = f8, 32\n"                               \
"       stf.spill [r3] = f9, 32\n"                               \
"       mov out0 = r16\n"                                        \
"       ;;\n"                                                    \
"     }\n"                                                 \
"     { .mmi\n"                                            \
"       stf.spill [r2] = f10, 32\n"                              \
"       stf.spill [r3] = f11, 32\n"                              \
"       shl out1 = r15, 4\n"                                     \
"       ;;\n"                                                    \
"     }\n"                                                 \
"     { .mmi\n"                                            \
"       stf.spill [r2] = f12, 32\n"                              \
"       stf.spill [r3] = f13, 32\n"                              \
"       shladd out1 = r15, 3, out1\n"                                  \
"       ;;\n"                                                    \
"     }\n"                                                 \
"     { .mmb\n"                                            \
"       stf.spill [r2] = f14\n"                                  \
"       stf.spill [r3] = f15\n"                                  \
"       br.call.sptk.many b0 = " #fixup_name "#\n"                     \
"     }\n"                                                 \
"     { .mii\n"                                            \
"       ld8 r9 = [ret0], 8\n"                                    \
"       adds r2 = 16, r12\n"                                     \
"       adds r3 = 32, r12\n"                                     \
"       ;;\n"                                                    \
"     }\n"                                                 \
"     { .mmi\n"                                            \
"       ldf.fill f8 = [r2], 32\n"                                \
"       ldf.fill f9 = [r3], 32\n"                                \
"       mov b0 = loc1\n"                                         \
"       ;;\n"                                                    \
"     }\n"                                                 \
"     { .mmi\n"                                            \
"       ldf.fill f10 = [r2], 32\n"                               \
"       ldf.fill f11 = [r3], 32\n"                               \
"       mov b6 = r9\n"                                     \
"       ;;\n"                                                    \
"     }\n"                                                 \
"     { .mmi\n"                                            \
"       ldf.fill f12 = [r2], 32\n"                               \
"       ldf.fill f13 = [r3], 32\n"                               \
"       mov ar.pfs = loc0\n"                                     \
"       ;;\n"                                                    \
"     }\n"                                                 \
"     { .mmi\n"                                            \
"       ldf.fill f14 = [r2], 32\n"                               \
"       ldf.fill f15 = [r3], 32\n"                               \
"       .restore sp           /* pop the unwind frame state */\n"      \
"       adds r12 = 160, r12\n"                                   \
"       ;;\n"                                                    \
"     }\n"                                                 \
"     { .mii\n"                                            \
"       mov r9 = loc3         /* restore language specific register */\n"  \
"       mov r10 = loc4  /* restore language specific register */\n"  \
"       mov r11 = loc5  /* restore language specific register */\n"  \
"     }\n"                                                 \
"     { .mii\n"                                            \
"       ld8 gp = [ret0]\n"                                       \
"       mov r8 = loc2         /* restore struct value register */\n"         \
"       ;;\n"                                                    \
"     }\n"                                                 \
"     /* An alloc is needed for the break system call to work.\n"      \
"        We don't care about the old value of the pfs register.  */\n"     \
"     { .mmb\n"                                            \
"       .prologue\n"                                             \
"       .body\n"                                           \
"       alloc r2 = ar.pfs, 0, 0, 8, 0\n"                         \
"       br.sptk.many b6\n"                                       \
"       ;;\n"                                                    \
"     }\n"                                                 \
"     .endp " #tramp_name "#\n");

#ifndef PROF
#define ELF_MACHINE_RUNTIME_TRAMPOLINE                      \
  TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup);         \
  TRAMPOLINE_TEMPLATE (_dl_runtime_profile, profile_fixup);
#else
#define ELF_MACHINE_RUNTIME_TRAMPOLINE                      \
  TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup);         \
  strong_alias (_dl_runtime_resolve, _dl_runtime_profile);
#endif


/* Initial entry point code for the dynamic linker.
   The C function `_dl_start' is the real entry point;
   its return value is the user program's entry point.  */

#define RTLD_START asm (                                          \
".text\n"                                                   \
"     .global _start#\n"                                          \
"     .proc _start#\n"                                      \
"_start:\n"                                                 \
"0:   { .mii\n"                                             \
"       .prologue\n"                                              \
"       .save ar.pfs, r32\n"                                      \
"       .save rp, r0\n"                                     \
"       alloc loc0 = ar.pfs, 0, 3, 4, 0\n"                              \
"       .body\n"                                            \
"       mov r2 = ip\n"                                      \
"       addl r3 = @gprel(0b), r0\n"                               \
"       ;;\n"                                                     \
"     }\n"                                                  \
"     { .mlx\n"                                             \
"       /* Calculate the GP, and save a copy in loc1.  */\n"                  \
"       sub gp = r2, r3\n"                                        \
"       movl r8 = 0x9804c0270033f\n"                                    \
"       ;;\n"                                                     \
"     }\n"                                                  \
"     { .mii\n"                                             \
"       mov ar.fpsr = r8\n"                                       \
"       sub loc1 = r2, r3\n"                                      \
"       /* _dl_start wants a pointer to the pointer to the arg block and\n" \
"          the arg block starts with an integer, thus the magic 16. */\n"   \
"       adds out0 = 16, sp\n"                                     \
"     }\n"                                                  \
"     { .bbb\n"                                             \
"       br.call.sptk.many b0 = _dl_start#\n"                            \
"       ;;\n"                                                     \
"     }\n"                                                  \
"     .endp _start#\n"                                      \
"     /* FALLTHRU */\n"                                     \
"     .global _dl_start_user#\n"                                  \
"     .proc _dl_start_user#\n"                                    \
"_dl_start_user:\n"                                               \
"      .prologue\n"                                               \
"      .save ar.pfs, r32\n"                                       \
"      .save rp, r0\n"                                      \
"      .body\n"                                             \
"     { .mii\n"                                             \
"       /* Save the pointer to the user entry point fptr in loc2.  */\n"    \
"       mov loc2 = ret0\n"                                        \
"       /* Store the highest stack address.  */\n"                      \
"       addl r2 = @ltoff(__libc_stack_end#), gp\n"                      \
"       addl r3 = @gprel(_dl_skip_args), gp\n"                    \
"       ;;\n"                                                     \
"     }\n"                                                  \
"     { .mmi\n"                                             \
"       ld8 r2 = [r2]\n"                                          \
"       ld4 r3 = [r3]\n"                                          \
"       adds r11 = 24, sp     /* Load the address of argv. */\n"        \
"       ;;\n"                                                     \
"     }\n"                                                  \
"     { .mii\n"                                             \
"       st8 [r2] = sp\n"                                          \
"       adds r10 = 16, sp     /* Load the address of argc. */\n"        \
"       mov out2 = r11\n"                                         \
"       ;;\n"                                                     \
"       /* See if we were run as a command with the executable file\n"      \
"          name as an extra leading argument.  If so, adjust the argv\n"    \
"          pointer to skip _dl_skip_args words.\n"                      \
"          Note that _dl_skip_args is an integer, not a long - Jes\n"         \
"\n"                                                        \
"          The stack pointer has to be 16 byte aligned. We cannot simply\n" \
"          addjust the stack pointer. We have to move the whole argv and\n" \
"          envp and adjust _dl_argv by _dl_skip_args.  H.J.  */\n"            \
"     }\n"                                                  \
"     { .mib\n"                                             \
"       ld8 out1 = [r10]      /* is argc actually stored as a long\n"         \
"                          or as an int? */\n"                    \
"       addl r2 = @ltoff(_dl_argv), gp\n"                         \
"       ;;\n"                                                     \
"     }\n"                                                  \
"     { .mmi\n"                                             \
"       ld8 r2 = [r2]         /* Get the address of _dl_argv. */\n"           \
"       sub out1 = out1, r3   /* Get the new argc. */\n"                \
"       shladd r3 = r3, 3, r0\n"                                  \
"       ;;\n"                                                     \
"     }\n"                                                  \
"     {\n"                                                  \
"       .mib\n"                                             \
"       ld8 r17 = [r2]  /* Get _dl_argv. */\n"                    \
"       add r15 = r11, r3     /* The address of the argv we move */\n"      \
"       ;;\n"                                                     \
"     }\n"                                                  \
"     /* ??? Could probably merge these two loops into 3 bundles.\n"          \
"        using predication to control which set of copies we're on.  */\n"  \
"1:   /* Copy argv. */\n"                                         \
"     { .mfi\n"                                             \
"       ld8 r16 = [r15], 8    /* Load the value in the old argv. */\n"      \
"       ;;\n"                                                     \
"     }\n"                                                  \
"     { .mib\n"                                             \
"       st8 [r11] = r16, 8    /* Store it in the new argv. */\n"        \
"       cmp.ne p6, p7 = 0, r16\n"                                 \
"(p6)   br.cond.dptk.few 1b\n"                                    \
"       ;;\n"                                                     \
"     }\n"                                                  \
"     { .mmi\n"                                             \
"       mov out3 = r11\n"                                         \
"       sub r17 = r17, r3     /* Substract _dl_skip_args. */\n"         \
"       addl out0 = @gprel(_rtld_local), gp\n"                    \
"     }\n"                                                  \
"1:   /* Copy env. */\n"                                          \
"     { .mfi\n"                                             \
"       ld8 r16 = [r15], 8    /* Load the value in the old env. */\n"         \
"       ;;\n"                                                     \
"     }\n"                                                  \
"     { .mib\n"                                             \
"       st8 [r11] = r16, 8    /* Store it in the new env. */\n"         \
"       cmp.ne p6, p7 = 0, r16\n"                                 \
"(p6)   br.cond.dptk.few 1b\n"                                    \
"       ;;\n"                                                     \
"     }\n"                                                  \
"     { .mmb\n"                                             \
"       st8 [r10] = out1            /* Record the new argc. */\n"       \
"       ld8 out0 = [out0]           /* get the linkmap */\n"            \
"     }\n"                                                  \
"     { .mmb\n"                                             \
"       st8 [r2] = r17        /* Load the new _dl_argv. */\n"           \
"       br.call.sptk.many b0 = _dl_init_internal#\n"                    \
"       ;;\n"                                                     \
"     }\n"                                                  \
"     /* Pass our finializer function to the user,\n"                   \
"        and jump to the user's entry point.  */\n"                     \
"     { .mmi\n"                                             \
"       ld8 r3 = [loc2], 8\n"                                     \
"       mov b0 = r0\n"                                      \
"     }\n"                                                  \
"     { .mmi\n"                                             \
"       addl ret0 = @ltoff(@fptr(_dl_fini#)), gp\n"                     \
"       ;;\n"                                                     \
"       mov b6 = r3\n"                                      \
"     }\n"                                                  \
"     { .mmi\n"                                             \
"       ld8 ret0 = [ret0]\n"                                      \
"       ld8 gp = [loc2]\n"                                        \
"       mov ar.pfs = loc0\n"                                      \
"       ;;\n"                                                     \
"     }\n"                                                  \
"     { .mfb\n"                                             \
"       br.sptk.many b6\n"                                        \
"       ;;\n"                                                     \
"     }\n"                                                  \
"     .endp _dl_start_user#\n"                                    \
".previous\n");


#ifndef RTLD_START_SPECIAL_INIT
#define RTLD_START_SPECIAL_INIT /* nothing */
#endif

/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry or TLS
   variable, so undefined references should not be allowed to define the
   value.
   ELF_RTYPE_CLASS_NOCOPY iff TYPE should not be allowed to resolve to one
   of the main executable's symbols, as for a COPY reloc, which we don't
   use.  */
/* ??? Ignore *MSB for now.  */
#if defined USE_TLS && (!defined RTLD_BOOTSTRAP || USE___THREAD)
#define elf_machine_type_class(type) \
  (((type) == R_IA64_IPLTLSB || (type) == R_IA64_DTPMOD64LSB                  \
    || (type) == R_IA64_DTPREL64LSB || (type) == R_IA64_TPREL64LSB)           \
   * ELF_RTYPE_CLASS_PLT)
#else
#define elf_machine_type_class(type) \
  (((type) == R_IA64_IPLTLSB) * ELF_RTYPE_CLASS_PLT)
#endif

/* A reloc type used for ld.so cmdline arg lookups to reject PLT entries.  */
#define ELF_MACHINE_JMP_SLOT   R_IA64_IPLTLSB

/* According to the IA-64 specific documentation, Rela is always used.  */
#define ELF_MACHINE_NO_REL 1

/* Return the address of the entry point. */
#define ELF_MACHINE_START_ADDRESS(map, start)   \
  DL_STATIC_FUNCTION_ADDRESS (map, start)

#define elf_machine_profile_fixup_plt(l, reloc, rel_addr, value) \
  elf_machine_fixup_plt (l, reloc, rel_addr, value)

#define elf_machine_profile_plt(reloc_addr) ((Elf64_Addr) (reloc_addr))

/* Fixup a PLT entry to bounce directly to the function at VALUE.  */
static inline Elf64_Addr
elf_machine_fixup_plt (struct link_map *l, lookup_t t,
                   const Elf64_Rela *reloc,
                   Elf64_Addr *reloc_addr, Elf64_Addr value)
{
  /* l is the link_map for the caller, t is the link_map for the object
   * being called */
  /* got has already been relocated in elf_get_dynamic_info() */
  reloc_addr[1] = t->l_info[DT_PLTGOT]->d_un.d_ptr;
  /* we need a "release" here to ensure that the gp is visible before
     the code entry point is updated: */
  ((volatile Elf64_Addr *) reloc_addr)[0] = value;
  return (Elf64_Addr) reloc_addr;
}

/* Return the final value of a plt relocation.  */
static inline Elf64_Addr
elf_machine_plt_value (struct link_map *map, const Elf64_Rela *reloc,
                   Elf64_Addr value)
{
  /* No need to handle rel vs rela since IA64 is rela only */
  return value + reloc->r_addend;
}

#endif /* !dl_machine_h */

#ifdef RESOLVE_MAP

#define R_IA64_TYPE(R)   ((R) & -8)
#define R_IA64_FORMAT(R) ((R) & 7)

#define R_IA64_FORMAT_32MSB   4
#define R_IA64_FORMAT_32LSB   5
#define R_IA64_FORMAT_64MSB   6
#define R_IA64_FORMAT_64LSB   7


/* Perform the relocation specified by RELOC and SYM (which is fully
   resolved).  MAP is the object containing the reloc.  */
static inline void
elf_machine_rela (struct link_map *map,
              const Elf64_Rela *reloc,
              const Elf64_Sym *sym,
              const struct r_found_version *version,
              Elf64_Addr *const reloc_addr)
{
  const unsigned long int r_type = ELF64_R_TYPE (reloc->r_info);
  Elf64_Addr value;

#if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC && !defined SHARED
  /* This is defined in rtld.c, but nowhere in the static libc.a; make the
     reference weak so static programs can still link.  This declaration
     cannot be done when compiling rtld.c (i.e.  #ifdef RTLD_BOOTSTRAP)
     because rtld.c contains the common defn for _dl_rtld_map, which is
     incompatible with a weak decl in the same file.  */
  weak_extern (_dl_rtld_map);
#endif

  /* We cannot use a switch here because we cannot locate the switch
     jump table until we've self-relocated.  */

#if !defined RTLD_BOOTSTRAP || !defined HAVE_Z_COMBRELOC
  if (__builtin_expect (R_IA64_TYPE (r_type) == R_IA64_TYPE (R_IA64_REL64LSB),
                  0))
    {
      assert (ELF64_R_TYPE (reloc->r_info) == R_IA64_REL64LSB);
      value = *reloc_addr;
# if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC
      /* Already done in dynamic linker.  */
      if (map != &GL(dl_rtld_map))
# endif
        value += map->l_addr;
    }
  else
#endif
    if (__builtin_expect (r_type == R_IA64_NONE, 0))
      return;
  else
    {
      struct link_map *sym_map;

      /* RESOLVE_MAP() will return NULL if it fail to locate the symbol.  */
      if ((sym_map = RESOLVE_MAP (&sym, version, r_type)))
        {
        value = sym_map->l_addr + sym->st_value + reloc->r_addend;

        if (R_IA64_TYPE (r_type) == R_IA64_TYPE (R_IA64_DIR64LSB))
          ;/* No adjustment.  */
        else if (r_type == R_IA64_IPLTLSB)
          {
            elf_machine_fixup_plt (NULL, sym_map, reloc, reloc_addr, value);
            return;
          }
        else if (R_IA64_TYPE (r_type) == R_IA64_TYPE (R_IA64_FPTR64LSB))
          value = __ia64_make_fptr (sym_map, sym, value);
        else if (R_IA64_TYPE (r_type) == R_IA64_TYPE (R_IA64_PCREL64LSB))
          value -= (Elf64_Addr) reloc_addr & -16;
#if defined USE_TLS && (!defined RTLD_BOOTSTRAP || defined USE___THREAD)
        else if (R_IA64_TYPE (r_type) == R_IA64_TYPE (R_IA64_DTPMOD64LSB))
# ifdef RTLD_BOOTSTRAP
          /* During startup the dynamic linker is always index 1.  */
          value = 1;
# else            
          /* Get the information from the link map returned by the
             resolv function.  */
          value = sym_map->l_tls_modid;
        else if (R_IA64_TYPE (r_type) == R_IA64_TYPE (R_IA64_DTPREL64LSB))
          value -= sym_map->l_addr;
# endif
        else if (R_IA64_TYPE (r_type) == R_IA64_TYPE (R_IA64_TPREL64LSB))
          {
# ifndef RTLD_BOOTSTRAP
            CHECK_STATIC_TLS (map, sym_map);
# endif
            value += sym_map->l_tls_offset - sym_map->l_addr;
          }
#endif
        else
          assert (! "unexpected dynamic reloc type");
      }
      else
      value = 0;
    }

  /* ??? Ignore MSB and Instruction format for now.  */
  if (R_IA64_FORMAT (r_type) == R_IA64_FORMAT_64LSB)
    *reloc_addr = value;
  else if (R_IA64_FORMAT (r_type) == R_IA64_FORMAT_32LSB)
    *(int *) reloc_addr = value;
  else if (r_type == R_IA64_IPLTLSB)
    {
      reloc_addr[0] = 0;
      reloc_addr[1] = 0;
    }
  else
    assert (! "unexpected dynamic reloc format");
}

/* Let do-rel.h know that on IA-64 if l_addr is 0, all RELATIVE relocs
   can be skipped.  */
#define ELF_MACHINE_REL_RELATIVE 1

static inline void
elf_machine_rela_relative (Elf64_Addr l_addr, const Elf64_Rela *reloc,
                     Elf64_Addr *const reloc_addr)
{
  /* ??? Ignore MSB and Instruction format for now.  */
  assert (ELF64_R_TYPE (reloc->r_info) == R_IA64_REL64LSB);

  *reloc_addr += l_addr;
}

/* Perform a RELATIVE reloc on the .got entry that transfers to the .plt.  */
static inline void
elf_machine_lazy_rel (struct link_map *map,
                  Elf64_Addr l_addr, const Elf64_Rela *reloc)
{
  Elf64_Addr *const reloc_addr = (void *) (l_addr + reloc->r_offset);
  const unsigned long int r_type = ELF64_R_TYPE (reloc->r_info);

  if (r_type == R_IA64_IPLTLSB)
    {
      reloc_addr[0] += l_addr;
      reloc_addr[1] += l_addr;
    }
  else if (r_type == R_IA64_NONE)
    return;
  else
    assert (! "unexpected PLT reloc type");
}

#endif /* RESOLVE_MAP */

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