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authorRoland McGrath <roland@gnu.org>1995-09-18 03:28:15 +0000
committerRoland McGrath <roland@gnu.org>1995-09-18 03:28:15 +0000
commite537c55ea926d27e2f625b30e5520e9baea88c46 (patch)
treec607a7fb261064e97011f83b6c5c918fe951e21a /sysdeps/unix/sysv
parent60478656fad8d8a487e9bc52d025f69767c3262b (diff)
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Sun Sep 17 18:29:13 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
	* sysdeps/mach/hurd/truncate.c: Call __file_set_size instead of
	__file_truncate.
	* sysdeps/mach/hurd/ftruncate.c: Likewise.

	* sysdeps/unix/sysv/linux/dl-machine.h: File removed.
Diffstat (limited to 'sysdeps/unix/sysv')
-rw-r--r--sysdeps/unix/sysv/linux/dl-machine.h214
1 files changed, 0 insertions, 214 deletions
diff --git a/sysdeps/unix/sysv/linux/dl-machine.h b/sysdeps/unix/sysv/linux/dl-machine.h
deleted file mode 100644
index 2ed6c670e5..0000000000
--- a/sysdeps/unix/sysv/linux/dl-machine.h
+++ /dev/null
@@ -1,214 +0,0 @@
-/* Machine-dependent ELF dynamic relocation inline functions.
-   i386/Linux version.
-Copyright (C) 1995 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 Library General Public License as
-published by the Free Software Foundation; either version 2 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
-Library General Public License for more details.
-
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA.  */
-
-#define ELF_MACHINE_NAME "i386"
-
-#include <assert.h>
-#include <string.h>
-#include <link.h>
-#include <syscall.h>
-#include <sys/mman.h>
-
-/* Return nonzero iff E_MACHINE is compatible with the running host.  */
-static inline int
-elf_machine_matches_host (Elf32_Half e_machine)
-{
-  switch (e_machine)
-    {
-    case EM_386:
-    case EM_486:
-      return 1;
-    default:
-      return 0;
-    }
-}
-
-
-/* Return the run-time address of the _GLOBAL_OFFSET_TABLE_.
-   Must be inlined in a function which uses global data.  */
-static inline Elf32_Addr *
-elf_machine_got (void)
-{
-  register Elf32_Addr *got asm ("%ebx");
-  return got;
-}
-
-
-/* Return the run-time load address of the shared object.  */
-static inline Elf32_Addr
-elf_machine_load_address (void)
-{
-  Elf32_Addr addr;
-  asm ("	call here\n"
-       "here:	popl %0\n"
-       "	subl $here, %0"
-       : "=r" (addr));
-  return addr;
-}
-/* The `subl' insn above will contain an R_386_32 relocation entry
-   intended to insert the run-time address of the label `here'.
-   This will be the first relocation in the text of the dynamic linker;
-   we skip it to avoid trying to modify read-only text in this early stage.  */
-#define ELF_MACHINE_BEFORE_RTLD_RELOC(dynamic_info) \
-  ++(const Elf32_Rel *) (dynamic_info)[DT_REL]->d_un.d_ptr; \
-  (dynamic_info)[DT_RELSZ]->d_un.d_val -= sizeof (Elf32_Rel)
-
-/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
-   MAP is the object containing the reloc.  */
-
-static inline void
-elf_machine_rel (struct link_map *map,
-		 const Elf32_Rel *reloc,
-		 Elf32_Addr sym_loadaddr, const Elf32_Sym *sym)
-{
-  Elf32_Addr *const reloc_addr = (void *) (map->l_addr + reloc->r_offset);
-  const Elf32_Addr sym_value = sym_loadaddr + sym->st_value;
-
-  switch (ELF32_R_TYPE (reloc->r_info))
-    {
-    case R_386_COPY:
-      memcpy (reloc_addr, (void *) sym_value, sym->st_size);
-      break;
-    case R_386_GLOB_DAT:
-    case R_386_JMP_SLOT:
-      *reloc_addr = sym_value;
-      break;
-    case R_386_32:
-      if (map->l_type == lt_interpreter)
-	{
-	  /* Undo the relocation done here during bootstrapping.  Now we will
-	     relocate it anew, possibly using a binding found in the user
-	     program or a loaded library rather than the dynamic linker's
-	     built-in definitions used while loading those libraries.  */
-	  const Elf32_Sym *const dlsymtab
-	    = (void *) (map->l_addr + map->l_info[DT_SYMTAB]->d_un.d_ptr);
-	  *reloc_addr -= (map->l_addr +
-			  dlsymtab[ELF32_R_SYM (reloc->r_info)].st_value);
-	}
-      *reloc_addr += sym_value;
-      break;
-    case R_386_RELATIVE:
-      if (map->l_type != lt_interpreter) /* Already done in dynamic linker.  */
-	*reloc_addr += map->l_addr;
-      break;
-    case R_386_PC32:
-      *reloc_addr = sym_value - (Elf32_Addr) reloc_addr;
-      break;
-    default:
-      assert (! "unexpected dynamic reloc type");
-      break;
-    }
-}
-
-static inline void
-elf_machine_lazy_rel (struct link_map *map, const Elf32_Rel *reloc)
-{
-  Elf32_Addr *const reloc_addr = (void *) (map->l_addr + reloc->r_offset);
-  switch (ELF32_R_TYPE (reloc->r_info))
-    {
-    case R_386_JMP_SLOT:
-      *reloc_addr += map->l_addr;
-      break;
-    default:
-      assert (! "unexpected PLT reloc type");
-      break;
-    }
-}
-
-/* The i386 never uses Elf32_Rela relocations.  */
-#define ELF_MACHINE_NO_RELA 1
-
-
-/* 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 void
-elf_machine_runtime_setup (struct link_map *l)
-{
-  Elf32_Addr *got;
-  extern void _dl_runtime_resolve (Elf32_Word);
-
-  /* The GOT entries for functions in the PLT have not yet been filled
-     in.  Their initial contents will arrange when called to push an
-     offset into the .rel.plt section, push _GLOBAL_OFFSET_TABLE_[1],
-     and then jump to _GLOBAL_OFFSET_TABLE[2].  */
-  got = (Elf32_Addr *) (l->l_addr + l->l_info[DT_PLTGOT]->d_un.d_ptr);
-  got[1] = (Elf32_Addr) l;	/* Identify this shared object.  */
-  /* This function will get called to fix up the GOT entry indicated by
-     the offset on the stack, and then jump to the resolved address.  */
-  got[2] = (Elf32_Addr) &_dl_runtime_resolve;
-}
-
-
-/* Mask identifying addresses reserved for the user program,
-   where the dynamic linker should not map anything.  */
-#define ELF_MACHINE_USER_ADDRESS_MASK	0xf8000000UL
-
-
-
-/* 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\
-.globl _start\n\
-.globl _dl_start_user\n\
-_start:\n\
-	call _dl_start\n\
-_dl_start_user:\n\
-	# Save the user entry point address in %edi.\n\
-	movl %eax, %edi\n\
-	# Point %ebx at the GOT.
-	call 0f\n\
-0:	popl %ebx\n\
-	addl $_GLOBAL_OFFSET_TABLE_+[.-0b], %ebx\n\
-	# See if we were run as a command with the executable file\n\
-	# name as an extra leading argument.\n\
-	movl rtld_command@GOT(%ebx), %eax\n\
-	movl (%eax),%eax\n\
-	testl %eax,%eax\n\
-	jz 0f\n\
-	# Pop the original argument count, decrement it, and replace\n\
-	# the original first argument pointer with the new count.\n\
-	popl %eax\n\
-	decl %eax\n\
-	movl %eax,(%esp)\n\
-	# Call _dl_init_next to return the address of an initializer\n\
-	# function to run.\n\
-0:	call _dl_init_next@PLT\n\
-	# Check for zero return, when out of initializers.\n\
-	testl %eax,%eax\n\
-	jz 1f\n\
-	# Call the shared object initializer function.\n\
-	# NOTE: We depend only on the registers (%ebx and %edi)\n\
-	# and the return address pushed by this call;\n\
-	# the initializer is called with the stack just\n\
-	# as it appears on entry, and it is free to move\n\
-	# the stack around, as long as it winds up jumping to\n\
-	# the return address on the top of the stack.\n\
-	call *%eax\n\
-	# Loop to call _dl_init_next for the next initializer.\n\
-	jmp 0b\n\
-1:	# Pass our finalizer function to the user in %edx, as per ELF ABI.\n\
-	movl _dl_fini@GOT(%ebx), %edx\n\
-	# Jump to the user's entry point.\n\
-	jmp *%edi\n\
-");