[thirdparty/glibc.git] / sysdeps / sparc / sparc32 / dl-machine.h

/* Machine-dependent ELF dynamic relocation inline functions.  SPARC version.
   Copyright (C) 1996-2014 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, see
   <http://www.gnu.org/licenses/>.  */

#ifndef dl_machine_h
#define dl_machine_h

#define ELF_MACHINE_NAME "sparc"

#include <string.h>
#include <sys/param.h>
#include <ldsodefs.h>
#include <sysdep.h>
#include <tls.h>
#include <dl-plt.h>

/* Return nonzero iff ELF header is compatible with the running host.  */
static inline int
elf_machine_matches_host (const Elf32_Ehdr *ehdr)
{
  if (ehdr->e_machine == EM_SPARC)
    return 1;
  else if (ehdr->e_machine == EM_SPARC32PLUS)
    {
      /* XXX The following is wrong!  Dave Miller rejected to implement it
	 correctly.  If this causes problems shoot *him*!  */
#ifdef SHARED
      return GLRO(dl_hwcap) & GLRO(dl_hwcap_mask) & HWCAP_SPARC_V9;
#else
      return GLRO(dl_hwcap) & HWCAP_SPARC_V9;
#endif
    }
  else
    return 0;
}

/* We have to do this because elf_machine_{dynamic,load_address} can be
   invoked from functions that have no GOT references, and thus the compiler
   has no obligation to load the PIC register.  */
#define LOAD_PIC_REG(PIC_REG)	\
do {	register Elf32_Addr pc __asm("o7"); \
	__asm("sethi %%hi(_GLOBAL_OFFSET_TABLE_-4), %1\n\t" \
	      "call 1f\n\t" \
	      "add %1, %%lo(_GLOBAL_OFFSET_TABLE_+4), %1\n" \
	      "1:\tadd %1, %0, %1" \
	      : "=r" (pc), "=r" (PIC_REG)); \
} while (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
elf_machine_dynamic (void)
{
  register Elf32_Addr *got asm ("%l7");

  LOAD_PIC_REG (got);

  return *got;
}

/* Return the run-time load address of the shared object.  */
static inline Elf32_Addr
elf_machine_load_address (void)
{
  register Elf32_Addr *pc __asm ("%o7"), *got __asm ("%l7");

  __asm ("sethi %%hi(_GLOBAL_OFFSET_TABLE_-4), %1\n\t"
	 "call 1f\n\t"
	 " add %1, %%lo(_GLOBAL_OFFSET_TABLE_+4), %1\n\t"
	 "call _DYNAMIC\n\t"
	 "call _GLOBAL_OFFSET_TABLE_\n"
	 "1:\tadd %1, %0, %1\n\t" : "=r" (pc), "=r" (got));

  /* got is now l_addr + _GLOBAL_OFFSET_TABLE_
     *got is _DYNAMIC
     pc[2]*4 is l_addr + _DYNAMIC - (long)pc - 8
     pc[3]*4 is l_addr + _GLOBAL_OFFSET_TABLE_ - (long)pc - 12  */
  return (Elf32_Addr) got - *got + (pc[2] - pc[3]) * 4 - 4;
}

/* 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)
{
  Elf32_Addr *plt;
  extern void _dl_runtime_resolve (Elf32_Word);
  extern void _dl_runtime_profile (Elf32_Word);

  if (l->l_info[DT_JMPREL] && lazy)
    {
      Elf32_Addr rfunc;

      /* The entries for functions in the PLT have not yet been filled in.
	 Their initial contents will arrange when called to set the high 22
	 bits of %g1 with an offset into the .rela.plt section and jump to
	 the beginning of the PLT.  */
      plt = (Elf32_Addr *) D_PTR (l, l_info[DT_PLTGOT]);
      if (__builtin_expect(profile, 0))
	{
	  rfunc = (Elf32_Addr) &_dl_runtime_profile;

	  if (GLRO(dl_profile) != NULL
	      && _dl_name_match_p (GLRO(dl_profile), l))
	    GL(dl_profile_map) = l;
	}
      else
	{
	  rfunc = (Elf32_Addr) &_dl_runtime_resolve;
	}

      /* The beginning of the PLT does:

		sethi %hi(_dl_runtime_{resolve,profile}), %g2
	 pltpc:	jmpl %g2 + %lo(_dl_runtime_{resolve,profile}), %g2
		 nop
		.word MAP

	 The PC value (pltpc) saved in %g2 by the jmpl points near the
	 location where we store the link_map pointer for this object.  */

      plt[0] = 0x05000000 | ((rfunc >> 10) & 0x003fffff);
      plt[1] = 0x85c0a000 | (rfunc & 0x3ff);
      plt[2] = OPCODE_NOP;	/* Fill call delay slot.  */
      plt[3] = (Elf32_Addr) l;
      if (__builtin_expect (l->l_info[VALIDX(DT_GNU_PRELINKED)] != NULL, 0)
	  || __builtin_expect (l->l_info [VALIDX (DT_GNU_LIBLISTSZ)] != NULL, 0))
	{
	  /* Need to reinitialize .plt to undo prelinking.  */
	  Elf32_Rela *rela = (Elf32_Rela *) D_PTR (l, l_info[DT_JMPREL]);
	  Elf32_Rela *relaend
	    = (Elf32_Rela *) ((char *) rela
			      + l->l_info[DT_PLTRELSZ]->d_un.d_val);
#if !defined RTLD_BOOTSTRAP && !defined __sparc_v9__
	  /* Note that we don't mask the hwcap here, as the flush is
	     essential to functionality on those cpu's that implement it.
	     For sparcv9 we can assume flush is present.  */
	  const int do_flush = GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH;
#else
	  const int do_flush = 1;
#endif

	  /* prelink must ensure there are no R_SPARC_NONE relocs left
	     in .rela.plt.  */
	  while (rela < relaend)
	    {
	      *(unsigned int *) (rela->r_offset + l->l_addr)
		= OPCODE_SETHI_G1 | (rela->r_offset + l->l_addr
				     - (Elf32_Addr) plt);
	      *(unsigned int *) (rela->r_offset + l->l_addr + 4)
		= OPCODE_BA | ((((Elf32_Addr) plt
				 - rela->r_offset - l->l_addr - 4) >> 2)
			       & 0x3fffff);
	      if (do_flush)
		{
		  __asm __volatile ("flush %0" : : "r" (rela->r_offset
							+ l->l_addr));
		  __asm __volatile ("flush %0+4" : : "r" (rela->r_offset
							  + l->l_addr));
		}
	      ++rela;
	    }
	}
    }

  return lazy;
}

/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry, so
   PLT entries 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.  */
#define elf_machine_type_class(type) \
  ((((type) == R_SPARC_JMP_SLOT						      \
     || ((type) >= R_SPARC_TLS_GD_HI22 && (type) <= R_SPARC_TLS_TPOFF64))     \
    * ELF_RTYPE_CLASS_PLT)						      \
   | (((type) == R_SPARC_COPY) * ELF_RTYPE_CLASS_COPY))

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

/* The SPARC never uses Elf32_Rel relocations.  */
#define ELF_MACHINE_NO_REL 1
#define ELF_MACHINE_NO_RELA 0

/* Undo the sub %sp, 6*4, %sp; add %sp, 22*4, %o0 below to get at the
   value we want in __libc_stack_end.  */
#define DL_STACK_END(cookie) \
  ((void *) (((long) (cookie)) - (22 - 6) * 4))

/* 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_GOT_ADDRESS(pic_reg, reg, symbol)	\
	"sethi	%gdop_hix22(" #symbol "), " #reg "\n\t" \
	"xor	" #reg ", %gdop_lox10(" #symbol "), " #reg "\n\t" \
	"ld	[" #pic_reg " + " #reg "], " #reg ", %gdop(" #symbol ")"

#define RTLD_START __asm__ ("\
	.text\n\
	.globl	_start\n\
	.type	_start, @function\n\
	.align	32\n\
_start:\n\
  /* Allocate space for functions to drop their arguments.  */\n\
	sub	%sp, 6*4, %sp\n\
  /* Pass pointer to argument block to _dl_start.  */\n\
	call	_dl_start\n\
	 add	%sp, 22*4, %o0\n\
	/* FALTHRU */\n\
	.globl	_dl_start_user\n\
	.type	_dl_start_user, @function\n\
_dl_start_user:\n\
  /* Load the PIC register.  */\n\
1:	call	2f\n\
	 sethi	%hi(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7\n\
2:	or	%l7, %lo(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7\n\
	add	%l7, %o7, %l7\n\
  /* Save the user entry point address in %l0 */\n\
	mov	%o0, %l0\n\
  /* See if we were run as a command with the executable file name as an\n\
     extra leading argument.  If so, adjust the contents of the stack.  */\n\
	" RTLD_GOT_ADDRESS(%l7, %g2, _dl_skip_args) "\n\
	ld	[%g2], %i0\n\
	tst	%i0\n\
	beq	3f\n\
	 ld	[%sp+22*4], %i5		/* load argc */\n\
	/* Find out how far to shift.  */\n\
	" RTLD_GOT_ADDRESS(%l7, %l3, _dl_argv) "\n\
	sub	%i5, %i0, %i5\n\
	ld	[%l3], %l4\n\
	sll	%i0, 2, %i2\n\
	st	%i5, [%sp+22*4]\n\
	sub	%l4, %i2, %l4\n\
	add	%sp, 23*4, %i1\n\
	add	%i1, %i2, %i2\n\
	st	%l4, [%l3]\n\
	/* Copy down argv */\n\
21:	ld	[%i2], %i3\n\
	add	%i2, 4, %i2\n\
	tst	%i3\n\
	st	%i3, [%i1]\n\
	bne	21b\n\
	 add	%i1, 4, %i1\n\
	/* Copy down env */\n\
22:	ld	[%i2], %i3\n\
	add	%i2, 4, %i2\n\
	tst	%i3\n\
	st	%i3, [%i1]\n\
	bne	22b\n\
	 add	%i1, 4, %i1\n\
	/* Copy down auxiliary table.  */\n\
23:	ld	[%i2], %i3\n\
	ld	[%i2+4], %i4\n\
	add	%i2, 8, %i2\n\
	tst	%i3\n\
	st	%i3, [%i1]\n\
	st	%i4, [%i1+4]\n\
	bne	23b\n\
	 add	%i1, 8, %i1\n\
  /* %o0 = _dl_loaded, %o1 = argc, %o2 = argv, %o3 = envp.  */\n\
3:	" RTLD_GOT_ADDRESS(%l7, %o0, _rtld_local) "\n\
	add	%sp, 23*4, %o2\n\
	sll	%i5, 2, %o3\n\
	add	%o3, 4, %o3\n\
	mov	%i5, %o1\n\
	add	%o2, %o3, %o3\n\
	call	_dl_init\n\
	 ld	[%o0], %o0\n\
  /* Pass our finalizer function to the user in %g1.  */\n\
	" RTLD_GOT_ADDRESS(%l7, %g1, _dl_fini) "\n\
  /* Jump to the user's entry point and deallocate the extra stack we got.  */\n\
	jmp	%l0\n\
	 add	%sp, 6*4, %sp\n\
	.size   _dl_start_user, . - _dl_start_user\n\
	.previous");

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)
{
#ifdef __sparc_v9__
  /* Sparc v9 can assume flush is always present.  */
  const int do_flush = 1;
#else
  /* Note that we don't mask the hwcap here, as the flush is essential to
     functionality on those cpu's that implement it.  */
  const int do_flush = GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH;
#endif
  return sparc_fixup_plt (reloc, reloc_addr, value, 1, do_flush);
}

/* 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 */

#define ARCH_LA_PLTENTER	sparc32_gnu_pltenter
#define ARCH_LA_PLTEXIT		sparc32_gnu_pltexit

#ifdef RESOLVE_MAP

/* 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 Elf32_Rela *reloc,
		  const Elf32_Sym *sym, const struct r_found_version *version,
		  void *const reloc_addr_arg, int skip_ifunc)
{
  Elf32_Addr *const reloc_addr = reloc_addr_arg;
#if !defined RTLD_BOOTSTRAP && !defined RESOLVE_CONFLICT_FIND_MAP
  const Elf32_Sym *const refsym = sym;
#endif
  Elf32_Addr value;
  const unsigned int r_type = ELF32_R_TYPE (reloc->r_info);
#if !defined RESOLVE_CONFLICT_FIND_MAP
  struct link_map *sym_map = NULL;
#endif

#if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC
  /* 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

  if (__glibc_unlikely (r_type == R_SPARC_NONE))
    return;

  if (__glibc_unlikely (r_type == R_SPARC_SIZE32))
    {
      *reloc_addr = sym->st_size + reloc->r_addend;
      return;
    }

#if !defined RTLD_BOOTSTRAP || !defined HAVE_Z_COMBRELOC
  if (__glibc_unlikely (r_type == R_SPARC_RELATIVE))
    {
# if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC
      if (map != &_dl_rtld_map) /* Already done in rtld itself. */
# endif
	*reloc_addr += map->l_addr + reloc->r_addend;
      return;
    }
#endif

#ifndef RESOLVE_CONFLICT_FIND_MAP
  if (__builtin_expect (ELF32_ST_BIND (sym->st_info) == STB_LOCAL, 0)
      && sym->st_shndx != SHN_UNDEF)
    {
      value = map->l_addr;
    }
  else
    {
      sym_map = RESOLVE_MAP (&sym, version, r_type);
      value = sym_map == NULL ? 0 : sym_map->l_addr + sym->st_value;
    }
#else
  value = 0;
#endif

  value += reloc->r_addend;	/* Assume copy relocs have zero addend.  */

  if (sym != NULL
      && __builtin_expect (ELFW(ST_TYPE) (sym->st_info) == STT_GNU_IFUNC, 0)
      && __builtin_expect (sym->st_shndx != SHN_UNDEF, 1)
      && __builtin_expect (!skip_ifunc, 1))
    {
      value = ((Elf32_Addr (*) (int)) value) (GLRO(dl_hwcap));
    }

  switch (r_type)
    {
#if !defined RTLD_BOOTSTRAP && !defined RESOLVE_CONFLICT_FIND_MAP
    case R_SPARC_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
	  || (GLRO(dl_verbose) && sym->st_size < refsym->st_size))
	{
	  const char *strtab;

	  strtab = (const void *) D_PTR (map, l_info[DT_STRTAB]);
	  _dl_error_printf ("\
%s: Symbol `%s' has different size in shared object, consider re-linking\n",
			    RTLD_PROGNAME, strtab + refsym->st_name);
	}
      memcpy (reloc_addr_arg, (void *) value,
	      MIN (sym->st_size, refsym->st_size));
      break;
#endif
    case R_SPARC_GLOB_DAT:
    case R_SPARC_32:
      *reloc_addr = value;
      break;
    case R_SPARC_IRELATIVE:
      value = ((Elf32_Addr (*) (int)) value) (GLRO(dl_hwcap));
      *reloc_addr = value;
      break;
    case R_SPARC_JMP_IREL:
      value = ((Elf32_Addr (*) (int)) value) (GLRO(dl_hwcap));
      /* Fall thru */
    case R_SPARC_JMP_SLOT:
      {
#if !defined RTLD_BOOTSTRAP && !defined __sparc_v9__
	/* Note that we don't mask the hwcap here, as the flush is
	   essential to functionality on those cpu's that implement
	   it.  For sparcv9 we can assume flush is present.  */
	const int do_flush = GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH;
#else
	/* Unfortunately, this is necessary, so that we can ensure
	   ld.so will not execute corrupt PLT entry instructions. */
	const int do_flush = 1;
#endif
	/* At this point we don't need to bother with thread safety,
	   so we can optimize the first instruction of .plt out.  */
	sparc_fixup_plt (reloc, reloc_addr, value, 0, do_flush);
      }
      break;
#ifndef RESOLVE_CONFLICT_FIND_MAP
    case R_SPARC_TLS_DTPMOD32:
      /* Get the information from the link map returned by the
	 resolv function.  */
      if (sym_map != NULL)
	*reloc_addr = sym_map->l_tls_modid;
      break;
    case R_SPARC_TLS_DTPOFF32:
      /* During relocation all TLS symbols are defined and used.
	 Therefore the offset is already correct.  */
      *reloc_addr = (sym == NULL ? 0 : sym->st_value) + reloc->r_addend;
      break;
    case R_SPARC_TLS_TPOFF32:
      /* The offset is negative, forward from the thread pointer.  */
      /* We know the offset of object the symbol is contained in.
	 It is a negative value which will be added to the
	 thread pointer.  */
      if (sym != NULL)
	{
	  CHECK_STATIC_TLS (map, sym_map);
	  *reloc_addr = sym->st_value - sym_map->l_tls_offset
	    + reloc->r_addend;
	}
      break;
# ifndef RTLD_BOOTSTRAP
    case R_SPARC_TLS_LE_HIX22:
    case R_SPARC_TLS_LE_LOX10:
      if (sym != NULL)
	{
	  CHECK_STATIC_TLS (map, sym_map);
	  value = sym->st_value - sym_map->l_tls_offset
	    + reloc->r_addend;
	  if (r_type == R_SPARC_TLS_LE_HIX22)
	    *reloc_addr = (*reloc_addr & 0xffc00000) | ((~value) >> 10);
	  else
	    *reloc_addr = (*reloc_addr & 0xffffe000) | (value & 0x3ff)
	      | 0x1c00;
	}
      break;
# endif
#endif
#ifndef RTLD_BOOTSTRAP
    case R_SPARC_8:
      *(char *) reloc_addr = value;
      break;
    case R_SPARC_16:
      *(short *) reloc_addr = value;
      break;
    case R_SPARC_DISP8:
      *(char *) reloc_addr = (value - (Elf32_Addr) reloc_addr);
      break;
    case R_SPARC_DISP16:
      *(short *) reloc_addr = (value - (Elf32_Addr) reloc_addr);
      break;
    case R_SPARC_DISP32:
      *reloc_addr = (value - (Elf32_Addr) reloc_addr);
      break;
    case R_SPARC_LO10:
      *reloc_addr = (*reloc_addr & ~0x3ff) | (value & 0x3ff);
      break;
    case R_SPARC_WDISP30:
      *reloc_addr = ((*reloc_addr & 0xc0000000)
		     | ((value - (unsigned int) reloc_addr) >> 2));
      break;
    case R_SPARC_HI22:
      *reloc_addr = (*reloc_addr & 0xffc00000) | (value >> 10);
      break;
    case R_SPARC_UA16:
      ((unsigned char *) reloc_addr_arg) [0] = value >> 8;
      ((unsigned char *) reloc_addr_arg) [1] = value;
      break;
    case R_SPARC_UA32:
      ((unsigned char *) reloc_addr_arg) [0] = value >> 24;
      ((unsigned char *) reloc_addr_arg) [1] = value >> 16;
      ((unsigned char *) reloc_addr_arg) [2] = value >> 8;
      ((unsigned char *) reloc_addr_arg) [3] = value;
      break;
#endif
#if !defined RTLD_BOOTSTRAP || defined _NDEBUG
    default:
      _dl_reloc_bad_type (map, r_type, 0);
      break;
#endif
    }
}

auto inline void
__attribute__ ((always_inline))
elf_machine_rela_relative (Elf32_Addr l_addr, const Elf32_Rela *reloc,
			   void *const reloc_addr_arg)
{
  Elf32_Addr *const reloc_addr = reloc_addr_arg;
  *reloc_addr += l_addr + reloc->r_addend;
}

auto inline void
__attribute__ ((always_inline))
elf_machine_lazy_rel (struct link_map *map,
		      Elf32_Addr l_addr, const Elf32_Rela *reloc,
		      int skip_ifunc)
{
  Elf32_Addr *const reloc_addr = (void *) (l_addr + reloc->r_offset);
  const unsigned int r_type = ELF32_R_TYPE (reloc->r_info);

  if (__glibc_likely (r_type == R_SPARC_JMP_SLOT))
    ;
  else if (r_type == R_SPARC_JMP_IREL)
    {
      Elf32_Addr value = map->l_addr + reloc->r_addend;
      if (__glibc_likely (!skip_ifunc))
	value = ((Elf32_Addr (*) (int)) value) (GLRO(dl_hwcap));
      sparc_fixup_plt (reloc, reloc_addr, value, 1, 1);
    }
  else if (r_type == R_SPARC_NONE)
    ;
  else
    _dl_reloc_bad_type (map, r_type, 1);
}

#endif	/* RESOLVE_MAP */
Commit	Line	Data
4f54cdb1	1	/* Machine-dependent ELF dynamic relocation inline functions. SPARC version.
d4697bc9	2	Copyright (C) 1996-2014 Free Software Foundation, Inc.
47707456	3	This file is part of the GNU C Library.
4f54cdb1	4
47707456	5	The GNU C Library is free software; you can redistribute it and/or
41bdb6e2 AJ	6	modify it under the terms of the GNU Lesser General Public
	7	License as published by the Free Software Foundation; either
	8	version 2.1 of the License, or (at your option) any later version.
4f54cdb1	9
47707456 UD	10	The GNU C Library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
41bdb6e2	13	Lesser General Public License for more details.
4f54cdb1	14
41bdb6e2	15	You should have received a copy of the GNU Lesser General Public
59ba27a6 PE	16	License along with the GNU C Library; if not, see
59ba27a6 PE	17	<http://www.gnu.org/licenses/>. */
4f54cdb1	18
62f29da7 UD	19	#ifndef dl_machine_h
	20	#define dl_machine_h
	21
4f54cdb1 RM	22	#define ELF_MACHINE_NAME "sparc"
4f54cdb1 RM	23
4f54cdb1	24	#include <string.h>
1f07e617	25	#include <sys/param.h>
a42195db	26	#include <ldsodefs.h>
5f4318d1	27	#include <sysdep.h>
62f29da7	28	#include <tls.h>
311927f1	29	#include <dl-plt.h>
4f54cdb1	30
ceb579a3	31	/* Return nonzero iff ELF header is compatible with the running host. */
4f54cdb1	32	static inline int
ceb579a3	33	elf_machine_matches_host (const Elf32_Ehdr *ehdr)
4f54cdb1	34	{
ceb579a3	35	if (ehdr->e_machine == EM_SPARC)
4194bc66	36	return 1;
ceb579a3	37	else if (ehdr->e_machine == EM_SPARC32PLUS)
4194bc66	38	{
63ae7b63 UD	39	/* XXX The following is wrong! Dave Miller rejected to implement it
63ae7b63 UD	40	correctly. If this causes problems shoot him! */
137ffcdc	41	#ifdef SHARED
afdca0f2	42	return GLRO(dl_hwcap) & GLRO(dl_hwcap_mask) & HWCAP_SPARC_V9;
137ffcdc	43	#else
afdca0f2	44	return GLRO(dl_hwcap) & HWCAP_SPARC_V9;
137ffcdc	45	#endif
4194bc66 RH	46	}
	47	else
	48	return 0;
4f54cdb1 RM	49	}
4f54cdb1 RM	50
cf299341 UD	51	/* We have to do this because elf_machine_{dynamic,load_address} can be
	52	invoked from functions that have no GOT references, and thus the compiler
	53	has no obligation to load the PIC register. */
	54	#define LOAD_PIC_REG(PIC_REG) \
	55	do { register Elf32_Addr pc __asm("o7"); \
	56	__asm("sethi %%hi(_GLOBAL_OFFSET_TABLE_-4), %1\n\t" \
	57	"call 1f\n\t" \
	58	"add %1, %%lo(_GLOBAL_OFFSET_TABLE_+4), %1\n" \
	59	"1:\tadd %1, %0, %1" \
	60	: "=r" (pc), "=r" (PIC_REG)); \
	61	} while (0)
4f54cdb1	62
47707456 UD	63	/* Return the link-time address of _DYNAMIC. Conveniently, this is the
	64	first element of the GOT. This must be inlined in a function which
	65	uses global data. */
	66	static inline Elf32_Addr
	67	elf_machine_dynamic (void)
4f54cdb1 RM	68	{
4f54cdb1 RM	69	register Elf32_Addr *got asm ("%l7");
cf299341 UD	70
	71	LOAD_PIC_REG (got);
	72
47707456	73	return *got;
4f54cdb1 RM	74	}
4f54cdb1 RM	75
4f54cdb1 RM	76	/* Return the run-time load address of the shared object. */
	77	static inline Elf32_Addr
	78	elf_machine_load_address (void)
	79	{
8243d6f1 RM	80	register Elf32_Addr pc __asm ("%o7"), got __asm ("%l7");
	81
	82	__asm ("sethi %%hi(_GLOBAL_OFFSET_TABLE_-4), %1\n\t"
	83	"call 1f\n\t"
	84	" add %1, %%lo(_GLOBAL_OFFSET_TABLE_+4), %1\n\t"
	85	"call _DYNAMIC\n\t"
	86	"call _GLOBAL_OFFSET_TABLE_\n"
	87	"1:\tadd %1, %0, %1\n\t" : "=r" (pc), "=r" (got));
	88
	89	/* got is now l_addr + _GLOBAL_OFFSET_TABLE_
	90	*got is _DYNAMIC
	91	pc[2]*4 is l_addr + _DYNAMIC - (long)pc - 8
	92	pc[3]4 is l_addr + _GLOBAL_OFFSET_TABLE_ - (long)pc - 12 /
	93	return (Elf32_Addr) got - got + (pc[2] - pc[3]) 4 - 4;
ca34d7a7 UD	94	}
ca34d7a7 UD	95
f41c8091 UD	96	/* Set up the loaded object described by L so its unrelocated PLT
	97	entries will jump to the on-demand fixup code in dl-runtime.c. */
	98
	99	static inline int
	100	elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
	101	{
	102	Elf32_Addr *plt;
	103	extern void _dl_runtime_resolve (Elf32_Word);
9c4c0024	104	extern void _dl_runtime_profile (Elf32_Word);
f41c8091 UD	105
	106	if (l->l_info[DT_JMPREL] && lazy)
	107	{
9c4c0024 UD	108	Elf32_Addr rfunc;
9c4c0024 UD	109
f41c8091 UD	110	/* The entries for functions in the PLT have not yet been filled in.
	111	Their initial contents will arrange when called to set the high 22
	112	bits of %g1 with an offset into the .rela.plt section and jump to
	113	the beginning of the PLT. */
b86120ed	114	plt = (Elf32_Addr *) D_PTR (l, l_info[DT_PLTGOT]);
404a4e2f	115	if (__builtin_expect(profile, 0))
9c4c0024 UD	116	{
	117	rfunc = (Elf32_Addr) &_dl_runtime_profile;
	118
404a4e2f RM	119	if (GLRO(dl_profile) != NULL
404a4e2f RM	120	&& _dl_name_match_p (GLRO(dl_profile), l))
5688da55	121	GL(dl_profile_map) = l;
9c4c0024	122	}
404a4e2f RM	123	else
	124	{
	125	rfunc = (Elf32_Addr) &_dl_runtime_resolve;
	126	}
f41c8091 UD	127
	128	/* The beginning of the PLT does:
	129
404a4e2f RM	130	sethi %hi(_dl_runtime_{resolve,profile}), %g2
	131	pltpc: jmpl %g2 + %lo(_dl_runtime_{resolve,profile}), %g2
	132	nop
f41c8091 UD	133	.word MAP
f41c8091 UD	134
d063d164	135	The PC value (pltpc) saved in %g2 by the jmpl points near the
f41c8091 UD	136	location where we store the link_map pointer for this object. */
f41c8091 UD	137
404a4e2f RM	138	plt[0] = 0x05000000 \| ((rfunc >> 10) & 0x003fffff);
404a4e2f RM	139	plt[1] = 0x85c0a000 \| (rfunc & 0x3ff);
f41c8091 UD	140	plt[2] = OPCODE_NOP; /* Fill call delay slot. */
f41c8091 UD	141	plt[3] = (Elf32_Addr) l;
32e6df36 UD	142	if (__builtin_expect (l->l_info[VALIDX(DT_GNU_PRELINKED)] != NULL, 0)
	143	\|\| __builtin_expect (l->l_info [VALIDX (DT_GNU_LIBLISTSZ)] != NULL, 0))
	144	{
	145	/* Need to reinitialize .plt to undo prelinking. */
32e6df36 UD	146	Elf32_Rela rela = (Elf32_Rela ) D_PTR (l, l_info[DT_JMPREL]);
	147	Elf32_Rela *relaend
	148	= (Elf32_Rela ) ((char ) rela
	149	+ l->l_info[DT_PLTRELSZ]->d_un.d_val);
467d1345 JJ	150	#if !defined RTLD_BOOTSTRAP && !defined __sparc_v9__
	151	/* Note that we don't mask the hwcap here, as the flush is
	152	essential to functionality on those cpu's that implement it.
	153	For sparcv9 we can assume flush is present. */
	154	const int do_flush = GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH;
	155	#else
	156	const int do_flush = 1;
	157	#endif
32e6df36 UD	158
	159	/* prelink must ensure there are no R_SPARC_NONE relocs left
	160	in .rela.plt. */
	161	while (rela < relaend)
	162	{
5c866a8b DM	163	(unsigned int ) (rela->r_offset + l->l_addr)
	164	= OPCODE_SETHI_G1 \| (rela->r_offset + l->l_addr
	165	- (Elf32_Addr) plt);
	166	(unsigned int ) (rela->r_offset + l->l_addr + 4)
32e6df36	167	= OPCODE_BA \| ((((Elf32_Addr) plt
5c866a8b DM	168	- rela->r_offset - l->l_addr - 4) >> 2)
5c866a8b DM	169	& 0x3fffff);
32e6df36 UD	170	if (do_flush)
32e6df36 UD	171	{
5c866a8b DM	172	__asm __volatile ("flush %0" : : "r" (rela->r_offset
	173	+ l->l_addr));
	174	__asm __volatile ("flush %0+4" : : "r" (rela->r_offset
	175	+ l->l_addr));
32e6df36 UD	176	}
	177	++rela;
	178	}
	179	}
f41c8091 UD	180	}
	181
	182	return lazy;
4f54cdb1 RM	183	}
4f54cdb1 RM	184
cf5a372e UD	185	/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry, so
	186	PLT entries should not be allowed to define the value.
	187	ELF_RTYPE_CLASS_NOCOPY iff TYPE should not be allowed to resolve to one
	188	of the main executable's symbols, as for a COPY reloc. */
d063d164	189	#define elf_machine_type_class(type) \
62f29da7 UD	190	((((type) == R_SPARC_JMP_SLOT \
	191	\|\| ((type) >= R_SPARC_TLS_GD_HI22 && (type) <= R_SPARC_TLS_TPOFF64)) \
	192	* ELF_RTYPE_CLASS_PLT) \
	193	\| (((type) == R_SPARC_COPY) * ELF_RTYPE_CLASS_COPY))
f41c8091 UD	194
f41c8091 UD	195	/* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */
a2b08ee5	196	#define ELF_MACHINE_JMP_SLOT R_SPARC_JMP_SLOT
f41c8091 UD	197
	198	/* The SPARC never uses Elf32_Rel relocations. */
	199	#define ELF_MACHINE_NO_REL 1
4cf5b6d0	200	#define ELF_MACHINE_NO_RELA 0
f41c8091	201
97716954 UD	202	/* Undo the sub %sp, 64, %sp; add %sp, 224, %o0 below to get at the
	203	value we want in __libc_stack_end. */
	204	#define DL_STACK_END(cookie) \
	205	((void ) (((long) (cookie)) - (22 - 6) 4))
	206
f41c8091 UD	207	/* Initial entry point code for the dynamic linker.
	208	The C function `_dl_start' is the real entry point;
	209	its return value is the user program's entry point. */
	210
3d2b3019 DM	211	#define RTLD_GOT_ADDRESS(pic_reg, reg, symbol) \
	212	"sethi %gdop_hix22(" #symbol "), " #reg "\n\t" \
	213	"xor " #reg ", %gdop_lox10(" #symbol "), " #reg "\n\t" \
	214	"ld [" #pic_reg " + " #reg "], " #reg ", %gdop(" #symbol ")"
3d2b3019	215
f41c8091	216	#define RTLD_START __asm__ ("\
669ed638 UD	217	.text\n\
	218	.globl _start\n\
	219	.type _start, @function\n\
	220	.align 32\n\
	221	_start:\n\
	222	/* Allocate space for functions to drop their arguments. */\n\
	223	sub %sp, 6*4, %sp\n\
	224	/* Pass pointer to argument block to _dl_start. */\n\
	225	call _dl_start\n\
	226	add %sp, 22*4, %o0\n\
	227	/* FALTHRU */\n\
	228	.globl _dl_start_user\n\
	229	.type _dl_start_user, @function\n\
	230	_dl_start_user:\n\
	231	/* Load the PIC register. */\n\
	232	1: call 2f\n\
	233	sethi %hi(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7\n\
	234	2: or %l7, %lo(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7\n\
	235	add %l7, %o7, %l7\n\
	236	/* Save the user entry point address in %l0 */\n\
	237	mov %o0, %l0\n\
669ed638 UD	238	/* See if we were run as a command with the executable file name as an\n\
669ed638 UD	239	extra leading argument. If so, adjust the contents of the stack. */\n\
3d2b3019 DM	240	" RTLD_GOT_ADDRESS(%l7, %g2, _dl_skip_args) "\n\
3d2b3019 DM	241	ld [%g2], %i0\n\
669ed638 UD	242	tst %i0\n\
	243	beq 3f\n\
	244	ld [%sp+224], %i5 / load argc */\n\
	245	/* Find out how far to shift. */\n\
3d2b3019	246	" RTLD_GOT_ADDRESS(%l7, %l3, _dl_argv) "\n\
669ed638 UD	247	sub %i5, %i0, %i5\n\
	248	ld [%l3], %l4\n\
	249	sll %i0, 2, %i2\n\
	250	st %i5, [%sp+22*4]\n\
	251	sub %l4, %i2, %l4\n\
	252	add %sp, 23*4, %i1\n\
	253	add %i1, %i2, %i2\n\
	254	st %l4, [%l3]\n\
	255	/* Copy down argv */\n\
	256	21: ld [%i2], %i3\n\
	257	add %i2, 4, %i2\n\
	258	tst %i3\n\
	259	st %i3, [%i1]\n\
	260	bne 21b\n\
	261	add %i1, 4, %i1\n\
	262	/* Copy down env */\n\
	263	22: ld [%i2], %i3\n\
	264	add %i2, 4, %i2\n\
	265	tst %i3\n\
	266	st %i3, [%i1]\n\
	267	bne 22b\n\
	268	add %i1, 4, %i1\n\
	269	/* Copy down auxiliary table. */\n\
	270	23: ld [%i2], %i3\n\
	271	ld [%i2+4], %i4\n\
	272	add %i2, 8, %i2\n\
	273	tst %i3\n\
	274	st %i3, [%i1]\n\
	275	st %i4, [%i1+4]\n\
	276	bne 23b\n\
	277	add %i1, 8, %i1\n\
	278	/* %o0 = _dl_loaded, %o1 = argc, %o2 = argv, %o3 = envp. */\n\
3d2b3019	279	3: " RTLD_GOT_ADDRESS(%l7, %o0, _rtld_local) "\n\
669ed638	280	add %sp, 23*4, %o2\n\
669ed638	281	sll %i5, 2, %o3\n\
669ed638 UD	282	add %o3, 4, %o3\n\
	283	mov %i5, %o1\n\
	284	add %o2, %o3, %o3\n\
c5684fdb	285	call _dl_init\n\
669ed638 UD	286	ld [%o0], %o0\n\
669ed638 UD	287	/* Pass our finalizer function to the user in %g1. */\n\
3d2b3019	288	" RTLD_GOT_ADDRESS(%l7, %g1, _dl_fini) "\n\
669ed638 UD	289	/* Jump to the user's entry point and deallocate the extra stack we got. */\n\
	290	jmp %l0\n\
	291	add %sp, 6*4, %sp\n\
	292	.size _dl_start_user, . - _dl_start_user\n\
9c4c0024	293	.previous");
f41c8091	294
32e6df36 UD	295	static inline Elf32_Addr
	296	elf_machine_fixup_plt (struct link_map *map, lookup_t t,
	297	const Elf32_Rela *reloc,
	298	Elf32_Addr *reloc_addr, Elf32_Addr value)
	299	{
467d1345 JJ	300	#ifdef __sparc_v9__
	301	/* Sparc v9 can assume flush is always present. */
	302	const int do_flush = 1;
	303	#else
	304	/* Note that we don't mask the hwcap here, as the flush is essential to
	305	functionality on those cpu's that implement it. */
	306	const int do_flush = GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH;
	307	#endif
	308	return sparc_fixup_plt (reloc, reloc_addr, value, 1, do_flush);
32e6df36 UD	309	}
32e6df36 UD	310
dfd2257a UD	311	/* Return the final value of a plt relocation. */
	312	static inline Elf32_Addr
	313	elf_machine_plt_value (struct link_map map, const Elf32_Rela reloc,
	314	Elf32_Addr value)
	315	{
	316	return value + reloc->r_addend;
	317	}
	318
62f29da7 UD	319	#endif /* dl_machine_h */
62f29da7 UD	320
404a4e2f RM	321	#define ARCH_LA_PLTENTER sparc32_gnu_pltenter
	322	#define ARCH_LA_PLTEXIT sparc32_gnu_pltexit
	323
	324	#ifdef RESOLVE_MAP
a2b08ee5	325
4f54cdb1 RM	326	/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
	327	MAP is the object containing the reloc. */
	328
1b243ca9 RM	329	auto inline void
1b243ca9 RM	330	__attribute__ ((always_inline))
0d8733c4	331	elf_machine_rela (struct link_map map, const Elf32_Rela reloc,
8f2ece69	332	const Elf32_Sym sym, const struct r_found_version version,
3a62d00d	333	void *const reloc_addr_arg, int skip_ifunc)
4f54cdb1	334	{
87d254a7	335	Elf32_Addr *const reloc_addr = reloc_addr_arg;
2d2cd515	336	#if !defined RTLD_BOOTSTRAP && !defined RESOLVE_CONFLICT_FIND_MAP
404a4e2f	337	const Elf32_Sym *const refsym = sym;
2d2cd515	338	#endif
404a4e2f	339	Elf32_Addr value;
1721af3f	340	const unsigned int r_type = ELF32_R_TYPE (reloc->r_info);
2d2cd515	341	#if !defined RESOLVE_CONFLICT_FIND_MAP
404a4e2f	342	struct link_map *sym_map = NULL;
2d2cd515	343	#endif
1721af3f	344
ee0cb67e	345	#if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC
4194bc66 RH	346	/* This is defined in rtld.c, but nowhere in the static libc.a; make the
	347	reference weak so static programs can still link. This declaration
	348	cannot be done when compiling rtld.c (i.e. #ifdef RTLD_BOOTSTRAP)
	349	because rtld.c contains the common defn for _dl_rtld_map, which is
	350	incompatible with a weak decl in the same file. */
	351	weak_extern (_dl_rtld_map);
	352	#endif
	353
a1ffb40e	354	if (__glibc_unlikely (r_type == R_SPARC_NONE))
404a4e2f RM	355	return;
404a4e2f RM	356
a1ffb40e	357	if (__glibc_unlikely (r_type == R_SPARC_SIZE32))
5ed848f3 DM	358	{
	359	*reloc_addr = sym->st_size + reloc->r_addend;
	360	return;
	361	}
	362
84aafa91	363	#if !defined RTLD_BOOTSTRAP \|\| !defined HAVE_Z_COMBRELOC
a1ffb40e	364	if (__glibc_unlikely (r_type == R_SPARC_RELATIVE))
993b3242	365	{
ee0cb67e	366	# if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC
993b3242	367	if (map != &_dl_rtld_map) /* Already done in rtld itself. */
ee0cb67e	368	# endif
993b3242	369	*reloc_addr += map->l_addr + reloc->r_addend;
404a4e2f	370	return;
0ecb606c	371	}
a334319f	372	#endif
404a4e2f	373
a334319f	374	#ifndef RESOLVE_CONFLICT_FIND_MAP
404a4e2f RM	375	if (__builtin_expect (ELF32_ST_BIND (sym->st_info) == STB_LOCAL, 0)
	376	&& sym->st_shndx != SHN_UNDEF)
	377	{
	378	value = map->l_addr;
	379	}
	380	else
	381	{
	382	sym_map = RESOLVE_MAP (&sym, version, r_type);
	383	value = sym_map == NULL ? 0 : sym_map->l_addr + sym->st_value;
	384	}
32e6df36	385	#else
404a4e2f	386	value = 0;
32e6df36	387	#endif
ceb2d9aa	388
404a4e2f RM	389	value += reloc->r_addend; /* Assume copy relocs have zero addend. */
404a4e2f RM	390
311927f1 DM	391	if (sym != NULL
311927f1 DM	392	&& __builtin_expect (ELFW(ST_TYPE) (sym->st_info) == STT_GNU_IFUNC, 0)
3a62d00d AS	393	&& __builtin_expect (sym->st_shndx != SHN_UNDEF, 1)
3a62d00d AS	394	&& __builtin_expect (!skip_ifunc, 1))
311927f1	395	{
9b849836	396	value = ((Elf32_Addr (*) (int)) value) (GLRO(dl_hwcap));
311927f1 DM	397	}
311927f1 DM	398
404a4e2f RM	399	switch (r_type)
404a4e2f RM	400	{
a334319f	401	#if !defined RTLD_BOOTSTRAP && !defined RESOLVE_CONFLICT_FIND_MAP
404a4e2f RM	402	case R_SPARC_COPY:
	403	if (sym == NULL)
	404	/* This can happen in trace mode if an object could not be
	405	found. */
	406	break;
	407	if (sym->st_size > refsym->st_size
	408	\|\| (GLRO(dl_verbose) && sym->st_size < refsym->st_size))
	409	{
	410	const char *strtab;
1f07e617	411
404a4e2f RM	412	strtab = (const void *) D_PTR (map, l_info[DT_STRTAB]);
404a4e2f RM	413	_dl_error_printf ("\
b9fb7870	414	%s: Symbol `%s' has different size in shared object, consider re-linking\n",
b9375348	415	RTLD_PROGNAME, strtab + refsym->st_name);
404a4e2f RM	416	}
	417	memcpy (reloc_addr_arg, (void *) value,
	418	MIN (sym->st_size, refsym->st_size));
	419	break;
33e09162	420	#endif
404a4e2f RM	421	case R_SPARC_GLOB_DAT:
	422	case R_SPARC_32:
	423	*reloc_addr = value;
	424	break;
311927f1	425	case R_SPARC_IRELATIVE:
9b849836	426	value = ((Elf32_Addr (*) (int)) value) (GLRO(dl_hwcap));
311927f1 DM	427	*reloc_addr = value;
	428	break;
	429	case R_SPARC_JMP_IREL:
9b849836	430	value = ((Elf32_Addr (*) (int)) value) (GLRO(dl_hwcap));
311927f1	431	/* Fall thru */
404a4e2f	432	case R_SPARC_JMP_SLOT:
467d1345 JJ	433	{
	434	#if !defined RTLD_BOOTSTRAP && !defined __sparc_v9__
	435	/* Note that we don't mask the hwcap here, as the flush is
	436	essential to functionality on those cpu's that implement
	437	it. For sparcv9 we can assume flush is present. */
	438	const int do_flush = GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH;
	439	#else
	440	/* Unfortunately, this is necessary, so that we can ensure
	441	ld.so will not execute corrupt PLT entry instructions. */
	442	const int do_flush = 1;
	443	#endif
	444	/* At this point we don't need to bother with thread safety,
	445	so we can optimize the first instruction of .plt out. */
	446	sparc_fixup_plt (reloc, reloc_addr, value, 0, do_flush);
	447	}
404a4e2f	448	break;
d063d164	449	#ifndef RESOLVE_CONFLICT_FIND_MAP
404a4e2f RM	450	case R_SPARC_TLS_DTPMOD32:
	451	/* Get the information from the link map returned by the
	452	resolv function. */
	453	if (sym_map != NULL)
	454	*reloc_addr = sym_map->l_tls_modid;
	455	break;
	456	case R_SPARC_TLS_DTPOFF32:
	457	/* During relocation all TLS symbols are defined and used.
	458	Therefore the offset is already correct. */
	459	*reloc_addr = (sym == NULL ? 0 : sym->st_value) + reloc->r_addend;
	460	break;
	461	case R_SPARC_TLS_TPOFF32:
	462	/* The offset is negative, forward from the thread pointer. */
	463	/* We know the offset of object the symbol is contained in.
	464	It is a negative value which will be added to the
	465	thread pointer. */
	466	if (sym != NULL)
	467	{
	468	CHECK_STATIC_TLS (map, sym_map);
	469	*reloc_addr = sym->st_value - sym_map->l_tls_offset
	470	+ reloc->r_addend;
	471	}
	472	break;
62f29da7	473	# ifndef RTLD_BOOTSTRAP
404a4e2f RM	474	case R_SPARC_TLS_LE_HIX22:
	475	case R_SPARC_TLS_LE_LOX10:
	476	if (sym != NULL)
	477	{
	478	CHECK_STATIC_TLS (map, sym_map);
	479	value = sym->st_value - sym_map->l_tls_offset
	480	+ reloc->r_addend;
	481	if (r_type == R_SPARC_TLS_LE_HIX22)
	482	reloc_addr = (reloc_addr & 0xffc00000) \| ((~value) >> 10);
	483	else
	484	reloc_addr = (reloc_addr & 0xffffe000) \| (value & 0x3ff)
	485	\| 0x1c00;
	486	}
	487	break;
62f29da7 UD	488	# endif
62f29da7 UD	489	#endif
33e09162	490	#ifndef RTLD_BOOTSTRAP
404a4e2f RM	491	case R_SPARC_8:
	492	(char ) reloc_addr = value;
	493	break;
	494	case R_SPARC_16:
	495	(short ) reloc_addr = value;
	496	break;
	497	case R_SPARC_DISP8:
	498	(char ) reloc_addr = (value - (Elf32_Addr) reloc_addr);
	499	break;
	500	case R_SPARC_DISP16:
	501	(short ) reloc_addr = (value - (Elf32_Addr) reloc_addr);
	502	break;
	503	case R_SPARC_DISP32:
	504	*reloc_addr = (value - (Elf32_Addr) reloc_addr);
	505	break;
	506	case R_SPARC_LO10:
	507	reloc_addr = (reloc_addr & ~0x3ff) \| (value & 0x3ff);
	508	break;
	509	case R_SPARC_WDISP30:
	510	reloc_addr = ((reloc_addr & 0xc0000000)
	511	\| ((value - (unsigned int) reloc_addr) >> 2));
	512	break;
	513	case R_SPARC_HI22:
	514	reloc_addr = (reloc_addr & 0xffc00000) \| (value >> 10);
	515	break;
	516	case R_SPARC_UA16:
	517	((unsigned char *) reloc_addr_arg) [0] = value >> 8;
	518	((unsigned char *) reloc_addr_arg) [1] = value;
	519	break;
	520	case R_SPARC_UA32:
	521	((unsigned char *) reloc_addr_arg) [0] = value >> 24;
	522	((unsigned char *) reloc_addr_arg) [1] = value >> 16;
	523	((unsigned char *) reloc_addr_arg) [2] = value >> 8;
	524	((unsigned char *) reloc_addr_arg) [3] = value;
	525	break;
33e09162	526	#endif
33e09162	527	#if !defined RTLD_BOOTSTRAP \|\| defined _NDEBUG
404a4e2f RM	528	default:
	529	_dl_reloc_bad_type (map, r_type, 0);
	530	break;
33e09162	531	#endif
4f54cdb1 RM	532	}
	533	}
	534
1b243ca9 RM	535	auto inline void
1b243ca9 RM	536	__attribute__ ((always_inline))
1f2a1df3	537	elf_machine_rela_relative (Elf32_Addr l_addr, const Elf32_Rela *reloc,
87d254a7	538	void *const reloc_addr_arg)
1721af3f	539	{
87d254a7	540	Elf32_Addr *const reloc_addr = reloc_addr_arg;
1721af3f UD	541	*reloc_addr += l_addr + reloc->r_addend;
	542	}
	543
1b243ca9 RM	544	auto inline void
1b243ca9 RM	545	__attribute__ ((always_inline))
421c80d2	546	elf_machine_lazy_rel (struct link_map *map,
3a62d00d AS	547	Elf32_Addr l_addr, const Elf32_Rela *reloc,
3a62d00d AS	548	int skip_ifunc)
4f54cdb1	549	{
311927f1 DM	550	Elf32_Addr const reloc_addr = (void ) (l_addr + reloc->r_offset);
	551	const unsigned int r_type = ELF32_R_TYPE (reloc->r_info);
	552
a1ffb40e	553	if (__glibc_likely (r_type == R_SPARC_JMP_SLOT))
311927f1 DM	554	;
311927f1 DM	555	else if (r_type == R_SPARC_JMP_IREL)
4f54cdb1	556	{
311927f1	557	Elf32_Addr value = map->l_addr + reloc->r_addend;
a1ffb40e	558	if (__glibc_likely (!skip_ifunc))
3a62d00d	559	value = ((Elf32_Addr (*) (int)) value) (GLRO(dl_hwcap));
7ec1221f	560	sparc_fixup_plt (reloc, reloc_addr, value, 1, 1);
4f54cdb1	561	}
311927f1 DM	562	else if (r_type == R_SPARC_NONE)
	563	;
	564	else
	565	_dl_reloc_bad_type (map, r_type, 1);
4f54cdb1 RM	566	}
4f54cdb1 RM	567
404a4e2f	568	#endif /* RESOLVE_MAP */