about summary refs log tree commit diff
path: root/sysdeps/ia64/dl-machine.h
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/ia64/dl-machine.h')
-rw-r--r--sysdeps/ia64/dl-machine.h507
1 files changed, 0 insertions, 507 deletions
diff --git a/sysdeps/ia64/dl-machine.h b/sysdeps/ia64/dl-machine.h
deleted file mode 100644
index 6053b3b786..0000000000
--- a/sysdeps/ia64/dl-machine.h
+++ /dev/null
@@ -1,507 +0,0 @@
-/* Machine-dependent ELF dynamic relocation inline functions.  IA-64 version.
-   Copyright (C) 1995-1997, 2000-2006, 2011 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 <dl-fptr.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)
-
-static inline void __attribute__ ((always_inline))
-__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 (_dl_boot_fptr_table), gp" : "=r"(boot_table));
-
-  map->l_mach.fptr_table_len = ELF_MACHINE_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 __attribute__ ((unused))
-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 __attribute__ ((unused, const))
-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 __attribute__ ((unused))
-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 __attribute__ ((unused, always_inline))
-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 fdesc *) &_dl_runtime_resolve)->ip;
-      else
-	{
-	  if (GLRO(dl_profile) != NULL
-	      && _dl_name_match_p (GLRO(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 fdesc *) &_dl_runtime_profile)->ip;
-	}
-
-      reserve[1] = doit;
-      reserve[2] = gp;
-    }
-
-  return lazy;
-}
-
-/* Names of the architecture-specific auditing callback functions.  */
-#define ARCH_LA_PLTENTER ia64_gnu_pltenter
-#define ARCH_LA_PLTEXIT ia64_gnu_pltexit
-
-/* Undo the adds out0 = 16, sp below to get at the value we want in
-   __libc_stack_end.  */
-#define DL_STACK_END(cookie) \
-  ((void *) (((long) (cookie)) - 16))
-
-/* 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 rp, r0\n"						      \
-"	  .body\n"							      \
-"	  .prologue\n"							      \
-"	  .save ar.pfs, r32\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 rp, r0\n"						      \
-"	  .body\n"							      \
-"	 .prologue\n"							      \
-"	 .save ar.pfs, r32\n"						      \
-"	 .body\n"							      \
-"	{ .mii\n"							      \
-"	  addl r3 = @gprel(_dl_skip_args), gp\n"			      \
-"	  adds r11 = 24, sp	/* Load the address of argv. */\n"	      \
-"	  /* Save the pointer to the user entry point fptr in loc2.  */\n"    \
-"	  mov loc2 = ret0\n"						      \
-"	  ;;\n"								      \
-"	}\n"								      \
-"	{ .mii\n"							      \
-"	  ld4 r3 = [r3]\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 finalizer 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.  */
-#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)
-
-/* 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)
-
-/* Fixup a PLT entry to bounce directly to the function at VALUE.  */
-static inline struct fdesc __attribute__ ((always_inline))
-elf_machine_fixup_plt (struct link_map *l, lookup_t t,
-		       const Elf64_Rela *reloc,
-		       Elf64_Addr *reloc_addr, struct fdesc 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] = value.gp;
-  /* 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.ip;
-  return value;
-}
-
-/* Return the final value of a plt relocation.  */
-static inline struct fdesc
-elf_machine_plt_value (struct link_map *map, const Elf64_Rela *reloc,
-		       struct fdesc value)
-{
-  /* No need to handle rel vs rela since IA64 is rela only */
-  return (struct fdesc) { value.ip + reloc->r_addend, value.gp };
-}
-
-#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.  */
-auto inline void
-__attribute ((always_inline))
-elf_machine_rela (struct link_map *map,
-		  const Elf64_Rela *reloc,
-		  const Elf64_Sym *sym,
-		  const struct r_found_version *version,
-		  void *const reloc_addr_arg,
-		  int skip_ifunc)
-{
-  Elf64_Addr *const reloc_addr = reloc_addr_arg;
-  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, NULL, reloc, reloc_addr,
-				     DL_FIXUP_MAKE_VALUE (sym_map, value));
-	      return;
-	    }
-	  else if (R_IA64_TYPE (r_type) == R_IA64_TYPE (R_IA64_FPTR64LSB))
-	    value = _dl_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;
-	  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;
-	    }
-	  else
-	    _dl_reloc_bad_type (map, r_type, 0);
-	}
-      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
-    _dl_reloc_bad_type (map, r_type, 0);
-}
-
-/* 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
-
-auto inline void
-__attribute ((always_inline))
-elf_machine_rela_relative (Elf64_Addr l_addr, const Elf64_Rela *reloc,
-			   void *const reloc_addr_arg)
-{
-  Elf64_Addr *const reloc_addr = reloc_addr_arg;
-  /* ??? 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.  */
-auto inline void
-__attribute ((always_inline))
-elf_machine_lazy_rel (struct link_map *map,
-		      Elf64_Addr l_addr, const Elf64_Rela *reloc,
-		      int skip_ifunc)
-{
-  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
-    _dl_reloc_bad_type (map, r_type, 1);
-}
-
-#endif /* RESOLVE_MAP */