Update.

	* sysdeps/sh/Dist: Removed.  There is no ieee754.h file.
	* sysdeps/sh/sh3/dl-machine.h: Moved to...
	* sysdeps/sh/dl-machine.h: ...here.  New file.
	* sysdeps/sh/sh4/dl-machine.h: Simply define KERNEL_MATH_EMULATION
	and include generic SH version.
	* sysdeps/sh/sh3/bits/endian.h: Move to...
	* sysdeps/sh/bits/endian.h: ...here.  New file.
	* sysdeps/sh/sh4/bits/endian.h: Removed.
	* sysdeps/sh/sh3/bits/huge_val.h: Move to...
	* sysdeps/sh/bits/huge_val.h: ...here.  New file.
	* sysdeps/sh/sh4/bits/huge_val.h: Removed.

	GAS which warns about changing section attributes.
	Proposed by Nick Clifton <nickc@redhat.com>.
	* sysdeps/sh/elf/initfini.c: New file.
	* sysdeps/sh/elf/start.S: New file.
	* sysdeps/sh/sys/ucontext.h: New file.

1 files changed, 520 insertions, 0 deletions

diff --git a/sysdeps/sh/dl-machine.h b/sysdeps/sh/dl-machine.h
new file mode 100644
index 0000000000..108c8d002c
--- /dev/null
+++ b/sysdeps/sh/dl-machine.h
@@ -0,0 +1,520 @@
+/* Machine-dependent ELF dynamic relocation inline functions.  SH version.
+   Copyright (C) 1999, 2000 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.	*/
+
+#ifndef dl_machine_h
+#define dl_machine_h
+
+/* Only dummy. This doesn't work. */
+
+#define ELF_MACHINE_NAME "SH"
+
+#include <sys/param.h>
+
+#include <assert.h>
+
+/* Return nonzero iff E_MACHINE is compatible with the running host.  */
+static inline int __attribute__ ((unused))
+elf_machine_matches_host (Elf32_Half e_machine)
+{
+  switch (e_machine)
+    {
+    case EM_SH:
+      return 1;
+    default:
+      return 0;
+    }
+}
+
+
+/* Return the link-time address of _DYNAMIC.  Conveniently, this is the
+   first element of the GOT.  This must be inlined in a function which
+   uses global data.  */
+static inline Elf32_Addr __attribute__ ((unused))
+elf_machine_dynamic (void)
+{
+  register Elf32_Addr *got;
+  asm ("mov r12,%0" :"=r" (got));
+  return *got;
+}
+
+
+/* Return the run-time load address of the shared object.  */
+static inline Elf32_Addr __attribute__ ((unused))
+elf_machine_load_address (void)
+{
+  Elf32_Addr addr;
+  asm ("mov.l .L1,r0
+	mov.l .L3,r2
+	add r12,r2
+	mov.l @(r0,r12),r0
+	bra .L2
+	 sub r0,r2
+	.align 2
+	.L1: .long _dl_start@GOT
+	.L3: .long _dl_start@GOTOFF
+	.L2: mov r2,%0"
+       : "=r" (addr) : : "r0", "r1", "r2");
+  return addr;
+}
+
+
+/* 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))
+elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
+{
+  Elf32_Addr *got;
+  extern void _dl_runtime_resolve (Elf32_Word);
+  extern void _dl_runtime_profile (Elf32_Word);
+
+  if (l->l_info[DT_JMPREL] && lazy)
+    {
+      /* The GOT entries for functions in the PLT have not yet been filled
+	 in.  Their initial contents will arrange when called to load an
+	 offset into the .rela.plt section and _GLOBAL_OFFSET_TABLE_[1],
+	 and then jump to _GLOBAL_OFFSET_TABLE[2].  */
+      got = (Elf32_Addr *) D_PTR (l, l_info[DT_PLTGOT]);
+      got[1] = (Elf32_Addr) l;	/* Identify this shared object.	 */
+
+      /* The got[2] entry contains the address of a function which gets
+	 called to get the address of a so far unresolved function and
+	 jump to it.  The profiling extension of the dynamic linker allows
+	 to intercept the calls to collect information.	 In this case we
+	 don't store the address in the GOT so that all future calls also
+	 end in this function.	*/
+      if (profile)
+	{
+	  got[2] = (Elf32_Addr) &_dl_runtime_profile;
+	  /* Say that we really want profiling and the timers are started.  */
+	  _dl_profile_map = l;
+	}
+      else
+	/* 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;
+    }
+  return lazy;
+}
+
+/* This code is used in dl-runtime.c to call the `fixup' function
+   and then redirect to the address it returns.	 */
+
+#define ELF_MACHINE_RUNTIME_FIXUP_ARGS int plt_type
+
+#ifdef SHARED
+#define FUN_ADDR	"\
+	mov.l 1f,r2
+	mova 1f,r0
+        bra 2f
+	 add r0,r2		! Get GOT address in r2
+0:	.align 2
+1:	.long _GLOBAL_OFFSET_TABLE_
+2:	mov.l 3f,r0
+	add r2,r0"
+#define GOTJMP(x)	#x "@GOTOFF"
+#else
+#define FUN_ADDR	"\
+	mov.l 3f,r0"
+#define GOTJMP(x)	#x
+#endif
+
+#if defined (KERNEL_MATH_EMULATION)
+#define FGR_SAVE	"\
+	sts.l	fpscr, @-r15
+	mov	#8,r3
+	swap.w	r3, r3
+	lds	r3, fpscr
+	fmov.s	fr11, @-r15
+	fmov.s	fr10, @-r15
+	fmov.s	fr9, @-r15
+	fmov.s	fr8, @-r15
+	fmov.s	fr7, @-r15
+	fmov.s	fr6, @-r15
+	fmov.s	fr5, @-r15
+	fmov.s	fr4, @-r15"
+#define FGR_LOAD	"\
+	fmov.s	@r15+, fr4
+	fmov.s	@r15+, fr5
+	fmov.s	@r15+, fr6
+	fmov.s	@r15+, fr7
+	fmov.s	@r15+, fr8
+	fmov.s	@r15+, fr9
+	fmov.s	@r15+, fr10
+	fmov.s	@r15+, fr11
+	lds.l	@r15+, fpscr"
+#else
+#define FGR_SAVE	""
+#define FGR_LOAD	""
+#endif
+
+#ifndef PROF
+# define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ("\
+	.text
+	.globl _dl_runtime_resolve
+	.type _dl_runtime_resolve, @function
+	.align 5
+_dl_runtime_resolve:
+	mov.l r3,@-r15
+	mov.l r4,@-r15
+	mov.l r5,@-r15
+	mov.l r6,@-r15
+	mov.l r7,@-r15
+	mov.l r12,@-r15
+	movt r3			! Save T flag.
+	mov.l r3,@-r15
+	" FGR_SAVE "
+	sts.l pr,@-r15
+	mov r0,r4		! PLT type
+	mov r2,r5		! link map address
+	" FUN_ADDR "
+	jsr @r0			! Call resolver.
+	 mov r1,r6		! reloc offset
+	lds.l @r15+,pr		! Get register content back.
+	" FGR_LOAD "
+	mov.l @r15+,r3
+	shal r3			! Lode T flag.
+	mov.l @r15+,r12
+	mov.l @r15+,r7
+	mov.l @r15+,r6
+	mov.l @r15+,r5
+	mov.l @r15+,r4
+	jmp @r0			! Jump to function address.
+	 mov.l @r15+,r3
+	.align 2
+3:
+	.long " GOTJMP (fixup) "
+	.size _dl_runtime_resolve, .-_dl_runtime_resolve
+
+	.globl _dl_runtime_profile
+	.type _dl_runtime_profile, @function
+	.align 5
+_dl_runtime_profile:
+	mov.l r3,@-r15
+	mov.l r4,@-r15
+	mov.l r5,@-r15
+	mov.l r6,@-r15
+	mov.l r7,@-r15
+	mov.l r12,@-r15
+	movt r3			! Save T flag.
+	mov.l r3,@-r15
+	" FGR_SAVE "
+	sts.l pr,@-r15
+	mov r0,r4		! PLT type
+	mov r2,r5		! link map address
+	sts pr,r7		! return address
+	" FUN_ADDR "
+	jsr @r0			! Call resolver.
+	 mov r1,r6		! reloc offset
+	lds.l @r15+,pr		! Get register content back.
+	" FGR_LOAD "
+	mov.l @r15+,r3
+	shal r3			! Lode T flag.
+	mov.l @r15+,r12
+	mov.l @r15+,r7
+	mov.l @r15+,r6
+	mov.l @r15+,r5
+	mov.l @r15+,r4
+	jmp @r0			! Jump to function address.
+	 mov.l @r15+,r3
+	.align 2
+3:
+	.long " GOTJMP (profile_fixup) "
+	.size _dl_runtime_profile, .-_dl_runtime_profile
+	.previous
+");
+#else
+# define ELF_MACHINE_RUNTIME_TRAMPOLINE asm ("\
+	.text
+	.globl _dl_runtime_resolve
+	.globl _dl_runtime_profile
+	.type _dl_runtime_resolve, @function
+	.type _dl_runtime_profile, @function
+	.align 5
+_dl_runtime_resolve:
+_dl_runtime_profile:
+	mov.l r3,@-r15
+	mov.l r4,@-r15
+	mov.l r5,@-r15
+	mov.l r6,@-r15
+	mov.l r7,@-r15
+	mov.l r12,@-r15
+	movt r3			! Save T flag.
+	mov.l r3,@-r15
+	" FGR_SAVE "
+	sts.l pr,@-r15
+	mov r0,r4		! PLT type
+	mov r2,r5		! link map address
+	sts pr,r7		! return address
+	" FUN_ADDR "
+	jsr @r0			! Call resolver.
+	 mov r1,r6		! reloc offset
+	lds.l @r15+,pr		! Get register content back.
+	" FGR_LOAD "
+	mov.l @r15+,r3
+	shal r3			! Lode T flag.
+	mov.l @r15+,r12
+	mov.l @r15+,r7
+	mov.l @r15+,r6
+	mov.l @r15+,r5
+	mov.l @r15+,r4
+	jmp @r0			! Jump to function address.
+	 mov.l @r15+,r3
+	.align 2
+3:
+	.long " GOTJMP (fixup) "
+	.size _dl_runtime_resolve, .-_dl_runtime_resolve
+	.size _dl_runtime_profile, .-_dl_runtime_profile
+	.previous
+");
+#endif
+
+/* Mask identifying addresses reserved for the user program,
+   where the dynamic linker should not map anything.  */
+#define ELF_MACHINE_USER_ADDRESS_MASK	0x80000000UL
+
+/* 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\
+	mov r15,r4\n\
+	mov.l .L_dl_start,r1\n\
+	mova .L_dl_start,r0\n\
+	add r1,r0\n\
+	jsr @r0\n\
+	 nop\n\
+_dl_start_user:\n\
+	! Save the user entry point address in r8.\n\
+	mov r0,r8\n\
+	! Point r12 at the GOT.\n\
+	mov.l 1f,r12\n\
+	mova 1f,r0\n\
+	bra 2f\n\
+	 add r0,r12\n\
+	.align 2\n\
+1:	.long _GLOBAL_OFFSET_TABLE_\n\
+2:	! Store the highest stack address\n\
+	mov.l .L_stack_end,r0\n\
+	mov.l @(r0,r12),r0\n\
+	mov.l r15,@r0\n\
+	! See if we were run as a command with the executable file\n\
+	! name as an extra leading argument.\n\
+	mov.l .L_dl_skip_args,r0\n\
+	mov.l @(r0,r12),r0\n\
+	mov.l @r0,r0\n\
+	! Get the original argument count.\n\
+	mov.l @r15,r5\n\
+	! Subtract _dl_skip_args from it.\n\
+	sub r0,r5\n\
+	! Adjust the stack pointer to skip _dl_skip_args words.\n\
+	shll2 r0\n\
+	add r0,r15\n\
+	! Store back the modified argument count.\n\
+	mov.l r5,@r15\n\
+	! Compute argv address and envp.\n\
+	mov r15,r6\n\
+	add #4,r6\n\
+	mov r5,r7\n\
+	shll2 r7\n\
+	add r15,r7\n\
+	mov.l .L_dl_loaded,r0\n\
+	mov.l @(r0,r12),r0\n\
+	mov.l @r0,r4\n\
+	! Call _dl_init.\n\
+	mov.l .L_dl_init,r1\n\
+	mova .L_dl_init,r0\n\
+	add r1,r0\n\
+	jsr @r0\n\
+	 nop\n\
+1:	! Clear the startup flag.\n\
+	mov.l .L_dl_starting_up,r0\n\
+	mov.l @(r0,r12),r0\n\
+	mov #0,r2\n\
+	mov.l r2,@r0\n\
+	! Pass our finalizer function to the user in r4, as per ELF ABI.\n\
+	mov.l .L_dl_fini,r0\n\
+	mov.l @(r0,r12),r4\n\
+	! Jump to the user's entry point.\n\
+	jmp @r8\n\
+	 nop\n\
+	.align 2\n\
+.L_dl_start:\n\
+	.long _dl_start@PLT\n\
+.L_stack_end:\n\
+	.long __libc_stack_end@GOT\n\
+.L_dl_skip_args:\n\
+	.long _dl_skip_args@GOT\n\
+.L_dl_init:\n\
+	.long _dl_init@PLT\n\
+.L_dl_loaded:\n\
+	.long _dl_loaded@GOT\n\
+.L_dl_starting_up:\n\
+	.long _dl_starting_up@GOT\n\
+.L_dl_fini:\n\
+	.long _dl_fini@GOT\n\
+.previous\n\
+");
+
+/* Nonzero iff TYPE should not be allowed to resolve to one of
+   the main executable's symbols, as for a COPY reloc.	*/
+#define elf_machine_lookup_noexec_p(type) ((type) == R_SH_COPY)
+
+/* Nonzero iff TYPE describes relocation of a PLT entry, so
+   PLT entries should not be allowed to define the value.  */
+#define elf_machine_lookup_noplt_p(type) ((type) == R_SH_JMP_SLOT)
+
+/* A reloc type used for ld.so cmdline arg lookups to reject PLT entries.  */
+#define ELF_MACHINE_JMP_SLOT	R_SH_JMP_SLOT
+
+/* We define an initialization functions.  This is called very early in
+   _dl_sysdep_start.  */
+#define DL_PLATFORM_INIT dl_platform_init ()
+
+extern const char *_dl_platform;
+
+static inline void __attribute__ ((unused))
+dl_platform_init (void)
+{
+  if (_dl_platform != NULL && *_dl_platform == '\0')
+    /* Avoid an empty string which would disturb us.  */
+    _dl_platform = NULL;
+}
+
+static inline Elf32_Addr
+elf_machine_fixup_plt (struct link_map *map, lookup_t t,
+		       const Elf32_Rela *reloc,
+		       Elf32_Addr *reloc_addr, Elf32_Addr value)
+{
+  return *reloc_addr = value;
+}
+
+/* Return the final value of a plt relocation.	*/
+static inline Elf32_Addr
+elf_machine_plt_value (struct link_map *map, const Elf32_Rela *reloc,
+		       Elf32_Addr value)
+{
+  return value + reloc->r_addend;
+}
+
+#endif /* !dl_machine_h */
+
+#ifdef RESOLVE
+
+/* SH never uses Elf32_Rel relocations.	 */
+#define ELF_MACHINE_NO_REL 1
+
+extern char **_dl_argv;
+
+/* 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 Elf32_Rela *reloc,
+		 const Elf32_Sym *sym, const struct r_found_version *version,
+		 Elf32_Addr *const reloc_addr)
+{
+  if (ELF32_R_TYPE (reloc->r_info) == R_SH_RELATIVE)
+    {
+#ifndef RTLD_BOOTSTRAP
+      if (map != &_dl_rtld_map) /* Already done in rtld itself.	 */
+#endif
+	*reloc_addr = map->l_addr + reloc->r_addend;
+    }
+  else if (ELF32_R_TYPE (reloc->r_info) != R_SH_NONE)
+    {
+      const Elf32_Sym *const refsym = sym;
+      Elf32_Addr value = RESOLVE (&sym, version, ELF32_R_TYPE (reloc->r_info));
+      if (sym)
+	value += sym->st_value;
+      value += reloc->r_addend;
+
+      switch (ELF32_R_TYPE (reloc->r_info))
+	{
+	case R_SH_COPY:
+	  if (sym == NULL)
+	    /* This can happen in trace mode if an object could not be
+	       found.  */
+	    break;
+	  if (sym->st_size > refsym->st_size
+	      || (sym->st_size < refsym->st_size && _dl_verbose))
+	    {
+	      const char *strtab;
+
+	      strtab = (const char *) D_PTR (map, l_info[DT_STRTAB]);
+	      _dl_sysdep_error (_dl_argv[0] ?: "<program name unknown>",
+				": Symbol `", strtab + refsym->st_name,
+				"' has different size in shared object, "
+				"consider re-linking\n", NULL);
+	    }
+	  memcpy (reloc_addr, (void *) value, MIN (sym->st_size,
+						   refsym->st_size));
+	  break;
+	case R_SH_GLOB_DAT:
+	case R_SH_JMP_SLOT:
+	  *reloc_addr = value;
+	  break;
+	case R_SH_DIR32:
+	  {
+#ifndef RTLD_BOOTSTRAP
+	   /* 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);
+	    if (map == &_dl_rtld_map)
+	      /* 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.  */
+	      value -= map->l_addr + refsym->st_value + reloc->r_addend;
+#endif
+	    *reloc_addr = value;
+	    break;
+	  }
+	case R_SH_REL32:
+	  *reloc_addr = (value - (Elf32_Addr) reloc_addr);
+	  break;
+	default:
+	  _dl_reloc_bad_type (map, ELF32_R_TYPE (reloc->r_info), 0);
+	  break;
+	}
+    }
+}
+
+static inline void
+elf_machine_lazy_rel (struct link_map *map,
+		      Elf32_Addr l_addr, const Elf32_Rela *reloc)
+{
+  Elf32_Addr *const reloc_addr = (void *) (l_addr + reloc->r_offset);
+  /* Check for unexpected PLT reloc type.  */
+  if (ELF32_R_TYPE (reloc->r_info) == R_SH_JMP_SLOT)
+    *reloc_addr += l_addr;
+  else
+    _dl_reloc_bad_type (map, ELF32_R_TYPE (reloc->r_info), 1);
+}
+
+#endif /* RESOLVE */