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-rw-r--r--sysdeps/mips/dl-trampoline.c272
1 files changed, 0 insertions, 272 deletions
diff --git a/sysdeps/mips/dl-trampoline.c b/sysdeps/mips/dl-trampoline.c
deleted file mode 100644
index 459adf9a8e..0000000000
--- a/sysdeps/mips/dl-trampoline.c
+++ /dev/null
@@ -1,272 +0,0 @@
-/* PLT trampoline.  MIPS version.
-   Copyright (C) 1996-2001, 2002, 2003, 2004, 2005
-   Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Kazumoto Kojima <kkojima@info.kanagawa-u.ac.jp>.
-
-   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.  */
-
-/*  FIXME: Profiling of shared libraries is not implemented yet.  */
-
-#include <sysdep.h>
-#include <link.h>
-#include <elf.h>
-#include <ldsodefs.h>
-#include <dl-machine.h>
-
-/* Get link map for callers object containing STUB_PC.  */
-static inline struct link_map *
-elf_machine_runtime_link_map (ElfW(Addr) gpreg, ElfW(Addr) stub_pc)
-{
-  extern int _dl_mips_gnu_objects;
-
-  /* got[1] is reserved to keep its link map address for the shared
-     object generated by the gnu linker.  If all are such objects, we
-     can find the link map from current GPREG simply.  If not so, get
-     the link map for caller's object containing STUB_PC.  */
-
-  if (_dl_mips_gnu_objects)
-    {
-      ElfW(Addr) *got = elf_mips_got_from_gpreg (gpreg);
-      ElfW(Word) g1;
-
-      g1 = ((ElfW(Word) *) got)[1];
-
-      if ((g1 & ELF_MIPS_GNU_GOT1_MASK) != 0)
-	{
-	  struct link_map *l =
-	    (struct link_map *) (g1 & ~ELF_MIPS_GNU_GOT1_MASK);
-	  ElfW(Addr) base, limit;
-	  const ElfW(Phdr) *p = l->l_phdr;
-	  ElfW(Half) this, nent = l->l_phnum;
-
-	  /* For the common case of a stub being called from the containing
-	     object, STUB_PC will point to somewhere within the object that
-	     is described by the link map fetched via got[1].  Otherwise we
-	     have to scan all maps.  */
-	  for (this = 0; this < nent; this++)
-	    {
-	      if (p[this].p_type == PT_LOAD)
-		{
-		  base = p[this].p_vaddr + l->l_addr;
-		  limit = base + p[this].p_memsz;
-		  if (stub_pc >= base && stub_pc < limit)
-		    return l;
-		}
-	    }
-	}
-    }
-
-    struct link_map *l;
-    Lmid_t nsid;
-
-    for (nsid = 0; nsid < DL_NNS; ++nsid)
-      for (l = GL(dl_ns)[nsid]._ns_loaded; l != NULL; l = l->l_next)
-	{
-	  ElfW(Addr) base, limit;
-	  const ElfW(Phdr) *p = l->l_phdr;
-	  ElfW(Half) this, nent = l->l_phnum;
-
-	  for (this = 0; this < nent; ++this)
-	    {
-	      if (p[this].p_type == PT_LOAD)
-		{
-		  base = p[this].p_vaddr + l->l_addr;
-		  limit = base + p[this].p_memsz;
-		  if (stub_pc >= base && stub_pc < limit)
-		    return l;
-		}
-	    }
-	}
-
-  _dl_signal_error (0, NULL, NULL, "cannot find runtime link map");
-  return NULL;
-}
-
-/* Define mips specific runtime resolver. The function __dl_runtime_resolve
-   is called from assembler function _dl_runtime_resolve which converts
-   special argument registers t7 ($15) and t8 ($24):
-     t7  address to return to the caller of the function
-     t8  index for this function symbol in .dynsym
-   to usual c arguments.
-
-   Other architectures call fixup from dl-runtime.c in
-   _dl_runtime_resolve.  MIPS instead calls __dl_runtime_resolve.  We
-   have to use our own version because of the way the got section is
-   treated on MIPS (we've also got ELF_MACHINE_PLT defined).  */
-
-/* The flag _dl_mips_gnu_objects is set if all dynamic objects are
-   generated by the gnu linker. */
-int _dl_mips_gnu_objects = 1;
-
-#define VERSYMIDX(sym)  (DT_NUM + DT_THISPROCNUM + DT_VERSIONTAGIDX (sym))
-
-/* This is called from assembly stubs below which the compiler can't see.  */
-static ElfW(Addr)
-__dl_runtime_resolve (ElfW(Word), ElfW(Word), ElfW(Addr), ElfW(Addr))
-		  __attribute_used__;
-
-static ElfW(Addr)
-__dl_runtime_resolve (ElfW(Word) sym_index,
-		      ElfW(Word) return_address,
-		      ElfW(Addr) old_gpreg,
-		      ElfW(Addr) stub_pc)
-{
-  struct link_map *l = elf_machine_runtime_link_map (old_gpreg, stub_pc);
-  const ElfW(Sym) *const symtab
-    = (const ElfW(Sym) *) D_PTR (l, l_info[DT_SYMTAB]);
-  const char *strtab = (const void *) D_PTR (l, l_info[DT_STRTAB]);
-  ElfW(Addr) *got
-    = (ElfW(Addr) *) D_PTR (l, l_info[DT_PLTGOT]);
-  const ElfW(Word) local_gotno
-    = (const ElfW(Word)) l->l_info[DT_MIPS (LOCAL_GOTNO)]->d_un.d_val;
-  const ElfW(Word) gotsym
-    = (const ElfW(Word)) l->l_info[DT_MIPS (GOTSYM)]->d_un.d_val;
-  const ElfW(Sym) *sym = &symtab[sym_index];
-  struct link_map *sym_map;
-  ElfW(Addr) value;
-
-  /* FIXME: The symbol versioning stuff is not tested yet.  */
-  if (__builtin_expect (ELFW(ST_VISIBILITY) (sym->st_other), 0) == 0)
-    {
-      switch (l->l_info[VERSYMIDX (DT_VERSYM)] != NULL)
-	{
-	default:
-	  {
-	    const ElfW(Half) *vernum =
-	      (const void *) D_PTR (l, l_info[VERSYMIDX (DT_VERSYM)]);
-	    ElfW(Half) ndx = vernum[sym_index] & 0x7fff;
-	    const struct r_found_version *version = &l->l_versions[ndx];
-
-	    if (version->hash != 0)
-	      {
-		sym_map = _dl_lookup_symbol_x (strtab + sym->st_name, l,
-					       &sym, l->l_scope, version,
-					       ELF_RTYPE_CLASS_PLT, 0, 0);
-		break;
-	      }
-	    /* Fall through.  */
-	  }
-	case 0:
-	  sym_map = _dl_lookup_symbol_x (strtab + sym->st_name, l, &sym,
-					 l->l_scope, 0, ELF_RTYPE_CLASS_PLT,
-					 DL_LOOKUP_ADD_DEPENDENCY, 0);
-	}
-
-      /* Currently value contains the base load address of the object
-	 that defines sym.  Now add in the symbol offset.  */
-      value = (sym ? sym_map->l_addr + sym->st_value : 0);
-    }
-  else
-    /* We already found the symbol.  The module (and therefore its load
-       address) is also known.  */
-    value = l->l_addr + sym->st_value;
-
-  /* Apply the relocation with that value.  */
-  *(got + local_gotno + sym_index - gotsym) = value;
-
-  return value;
-}
-
-#if _MIPS_SIM == _ABIO32
-#define ELF_DL_FRAME_SIZE 40
-
-#define ELF_DL_SAVE_ARG_REGS "\
-	sw	$15, 36($29)\n						      \
-	sw	$4, 16($29)\n						      \
-	sw	$5, 20($29)\n						      \
-	sw	$6, 24($29)\n						      \
-	sw	$7, 28($29)\n						      \
-"
-
-#define ELF_DL_RESTORE_ARG_REGS "\
-	lw	$31, 36($29)\n						      \
-	lw	$4, 16($29)\n						      \
-	lw	$5, 20($29)\n						      \
-	lw	$6, 24($29)\n						      \
-	lw	$7, 28($29)\n						      \
-"
-
-#define IFABIO32(X) X
-
-#else /* _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64 */
-
-#define ELF_DL_FRAME_SIZE 80
-
-#define ELF_DL_SAVE_ARG_REGS "\
-	sd	$15, 72($29)\n						      \
-	sd	$4, 8($29)\n						      \
-	sd	$5, 16($29)\n						      \
-	sd	$6, 24($29)\n						      \
-	sd	$7, 32($29)\n						      \
-	sd	$8, 40($29)\n						      \
-	sd	$9, 48($29)\n						      \
-	sd	$10, 56($29)\n						      \
-	sd	$11, 64($29)\n						      \
-"
-
-#define ELF_DL_RESTORE_ARG_REGS "\
-	ld	$31, 72($29)\n						      \
-	ld	$4, 8($29)\n						      \
-	ld	$5, 16($29)\n						      \
-	ld	$6, 24($29)\n						      \
-	ld	$7, 32($29)\n						      \
-	ld	$8, 40($29)\n						      \
-	ld	$9, 48($29)\n						      \
-	ld	$10, 56($29)\n						      \
-	ld	$11, 64($29)\n						      \
-"
-
-#define IFABIO32(X)
-
-#endif
-
-asm ("\n\
-	.text\n\
-	.align	2\n\
-	.globl	_dl_runtime_resolve\n\
-	.type	_dl_runtime_resolve,@function\n\
-	.ent	_dl_runtime_resolve\n\
-_dl_runtime_resolve:\n\
-	.frame	$29, " STRINGXP(ELF_DL_FRAME_SIZE) ", $31\n\
-	.set noreorder\n\
-	# Save GP.\n\
-	move	$3, $28\n\
-	# Save arguments and sp value in stack.\n\
-	" STRINGXP(PTR_SUBIU) "  $29, " STRINGXP(ELF_DL_FRAME_SIZE) "\n\
-	# Modify t9 ($25) so as to point .cpload instruction.\n\
-	" IFABIO32(STRINGXP(PTR_ADDIU) "	$25, 12\n") "\
-	# Compute GP.\n\
-	" STRINGXP(SETUP_GP) "\n\
-	" STRINGXV(SETUP_GP64 (0, _dl_runtime_resolve)) "\n\
-	.set reorder\n\
-	# Save slot call pc.\n\
-	move	$2, $31\n\
-	" IFABIO32(STRINGXP(CPRESTORE(32))) "\n\
-	" ELF_DL_SAVE_ARG_REGS "\
-	move	$4, $24\n\
-	move	$5, $15\n\
-	move	$6, $3\n\
-	move	$7, $2\n\
-	jal	__dl_runtime_resolve\n\
-	" ELF_DL_RESTORE_ARG_REGS "\
-	" STRINGXP(RESTORE_GP64) "\n\
-	" STRINGXP(PTR_ADDIU) "	$29, " STRINGXP(ELF_DL_FRAME_SIZE) "\n\
-	move	$25, $2\n\
-	jr	$25\n\
-	.end	_dl_runtime_resolve\n\
-	.previous\n\
-");