(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

1 files changed, 0 insertions, 602 deletions

diff --git a/elf/dl-sysdep.c b/elf/dl-sysdep.c
deleted file mode 100644
index 68e08f4..0000000
--- a/elf/dl-sysdep.c
+++ /dev/null
@@ -1,602 +0,0 @@
-/* Operating system support for run-time dynamic linker.  Generic Unix version.
-   Copyright (C) 1995-1998, 2000-2005, 2007 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.  */
-
-#include <assert.h>
-#include <elf.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <libintl.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/mman.h>
-#include <ldsodefs.h>
-#include <stdio-common/_itoa.h>
-#include <fpu_control.h>
-
-#include <entry.h>
-#include <dl-machine.h>
-#include <dl-procinfo.h>
-#include <dl-osinfo.h>
-#include <hp-timing.h>
-#include <tls.h>
-
-#ifdef _DL_FIRST_PLATFORM
-# define _DL_FIRST_EXTRA (_DL_FIRST_PLATFORM + _DL_PLATFORMS_COUNT)
-#else
-# define _DL_FIRST_EXTRA _DL_HWCAP_COUNT
-#endif
-
-extern char **_environ attribute_hidden;
-extern void _end attribute_hidden;
-
-/* Protect SUID program against misuse of file descriptors.  */
-extern void __libc_check_standard_fds (void);
-
-#ifdef NEED_DL_BASE_ADDR
-ElfW(Addr) _dl_base_addr;
-#endif
-int __libc_enable_secure attribute_relro = 0;
-INTVARDEF(__libc_enable_secure)
-int __libc_multiple_libcs = 0;	/* Defining this here avoids the inclusion
-				   of init-first.  */
-/* This variable contains the lowest stack address ever used.  */
-void *__libc_stack_end attribute_relro = NULL;
-rtld_hidden_data_def(__libc_stack_end)
-static ElfW(auxv_t) *_dl_auxv attribute_relro;
-
-#ifndef DL_FIND_ARG_COMPONENTS
-# define DL_FIND_ARG_COMPONENTS(cookie, argc, argv, envp, auxp)	\
-  do {									      \
-    void **_tmp;							      \
-    (argc) = *(long int *) cookie;					      \
-    (argv) = (char **) ((long int *) cookie + 1);			      \
-    (envp) = (argv) + (argc) + 1;					      \
-    for (_tmp = (void **) (envp); *_tmp; ++_tmp)			      \
-      continue;								      \
-    (auxp) = (void *) ++_tmp;						      \
-  } while (0)
-#endif
-
-#ifndef DL_STACK_END
-# define DL_STACK_END(cookie) ((void *) (cookie))
-#endif
-
-ElfW(Addr)
-_dl_sysdep_start (void **start_argptr,
-		  void (*dl_main) (const ElfW(Phdr) *phdr, ElfW(Word) phnum,
-				   ElfW(Addr) *user_entry))
-{
-  const ElfW(Phdr) *phdr = NULL;
-  ElfW(Word) phnum = 0;
-  ElfW(Addr) user_entry;
-  ElfW(auxv_t) *av;
-#ifdef HAVE_AUX_SECURE
-# define set_seen(tag) (tag)	/* Evaluate for the side effects.  */
-# define set_seen_secure() ((void) 0)
-#else
-  uid_t uid = 0;
-  gid_t gid = 0;
-  unsigned int seen = 0;
-# define set_seen_secure() (seen = -1)
-# ifdef HAVE_AUX_XID
-#  define set_seen(tag) (tag)	/* Evaluate for the side effects.  */
-# else
-#  define M(type) (1 << (type))
-#  define set_seen(tag) seen |= M ((tag)->a_type)
-# endif
-#endif
-#ifdef NEED_DL_SYSINFO
-  uintptr_t new_sysinfo = 0;
-#endif
-
-  __libc_stack_end = DL_STACK_END (start_argptr);
-  DL_FIND_ARG_COMPONENTS (start_argptr, _dl_argc, INTUSE(_dl_argv), _environ,
-			  _dl_auxv);
-
-  user_entry = (ElfW(Addr)) ENTRY_POINT;
-  GLRO(dl_platform) = NULL; /* Default to nothing known about the platform.  */
-
-  for (av = _dl_auxv; av->a_type != AT_NULL; set_seen (av++))
-    switch (av->a_type)
-      {
-      case AT_PHDR:
-	phdr = (void *) av->a_un.a_val;
-	break;
-      case AT_PHNUM:
-	phnum = av->a_un.a_val;
-	break;
-      case AT_PAGESZ:
-	GLRO(dl_pagesize) = av->a_un.a_val;
-	break;
-      case AT_ENTRY:
-	user_entry = av->a_un.a_val;
-	break;
-#ifdef NEED_DL_BASE_ADDR
-      case AT_BASE:
-	_dl_base_addr = av->a_un.a_val;
-	break;
-#endif
-#ifndef HAVE_AUX_SECURE
-      case AT_UID:
-      case AT_EUID:
-	uid ^= av->a_un.a_val;
-	break;
-      case AT_GID:
-      case AT_EGID:
-	gid ^= av->a_un.a_val;
-	break;
-#endif
-      case AT_SECURE:
-#ifndef HAVE_AUX_SECURE
-	seen = -1;
-#endif
-	INTUSE(__libc_enable_secure) = av->a_un.a_val;
-	break;
-      case AT_PLATFORM:
-	GLRO(dl_platform) = (void *) av->a_un.a_val;
-	break;
-      case AT_HWCAP:
-	GLRO(dl_hwcap) = (unsigned long int) av->a_un.a_val;
-	break;
-      case AT_CLKTCK:
-	GLRO(dl_clktck) = av->a_un.a_val;
-	break;
-      case AT_FPUCW:
-	GLRO(dl_fpu_control) = av->a_un.a_val;
-	break;
-#ifdef NEED_DL_SYSINFO
-      case AT_SYSINFO:
-	new_sysinfo = av->a_un.a_val;
-	break;
-#endif
-#if defined NEED_DL_SYSINFO || defined NEED_DL_SYSINFO_DSO
-      case AT_SYSINFO_EHDR:
-	GLRO(dl_sysinfo_dso) = (void *) av->a_un.a_val;
-	break;
-#endif
-#ifdef DL_PLATFORM_AUXV
-      DL_PLATFORM_AUXV
-#endif
-      }
-
-#ifndef HAVE_AUX_SECURE
-  if (seen != -1)
-    {
-      /* Fill in the values we have not gotten from the kernel through the
-	 auxiliary vector.  */
-# ifndef HAVE_AUX_XID
-#  define SEE(UID, var, uid) \
-   if ((seen & M (AT_##UID)) == 0) var ^= __get##uid ()
-      SEE (UID, uid, uid);
-      SEE (EUID, uid, euid);
-      SEE (GID, gid, gid);
-      SEE (EGID, gid, egid);
-# endif
-
-      /* If one of the two pairs of IDs does not match this is a setuid
-	 or setgid run.  */
-      INTUSE(__libc_enable_secure) = uid | gid;
-    }
-#endif
-
-#ifndef HAVE_AUX_PAGESIZE
-  if (GLRO(dl_pagesize) == 0)
-    GLRO(dl_pagesize) = __getpagesize ();
-#endif
-
-#if defined NEED_DL_SYSINFO
-  /* Only set the sysinfo value if we also have the vsyscall DSO.  */
-  if (GLRO(dl_sysinfo_dso) != 0 && new_sysinfo)
-    GLRO(dl_sysinfo) = new_sysinfo;
-#endif
-
-#ifdef DL_SYSDEP_INIT
-  DL_SYSDEP_INIT;
-#endif
-
-#ifdef DL_PLATFORM_INIT
-  DL_PLATFORM_INIT;
-#endif
-
-  /* Determine the length of the platform name.  */
-  if (GLRO(dl_platform) != NULL)
-    GLRO(dl_platformlen) = strlen (GLRO(dl_platform));
-
-  if (__sbrk (0) == &_end)
-    /* The dynamic linker was run as a program, and so the initial break
-       starts just after our bss, at &_end.  The malloc in dl-minimal.c
-       will consume the rest of this page, so tell the kernel to move the
-       break up that far.  When the user program examines its break, it
-       will see this new value and not clobber our data.  */
-    __sbrk (GLRO(dl_pagesize)
-	    - ((&_end - (void *) 0) & (GLRO(dl_pagesize) - 1)));
-
-  /* If this is a SUID program we make sure that FDs 0, 1, and 2 are
-     allocated.  If necessary we are doing it ourself.  If it is not
-     possible we stop the program.  */
-  if (__builtin_expect (INTUSE(__libc_enable_secure), 0))
-    __libc_check_standard_fds ();
-
-  (*dl_main) (phdr, phnum, &user_entry);
-  return user_entry;
-}
-
-void
-internal_function
-_dl_sysdep_start_cleanup (void)
-{
-}
-
-void
-internal_function
-_dl_show_auxv (void)
-{
-  char buf[64];
-  ElfW(auxv_t) *av;
-
-  /* Terminate string.  */
-  buf[63] = '\0';
-
-  /* The following code assumes that the AT_* values are encoded
-     starting from 0 with AT_NULL, 1 for AT_IGNORE, and all other values
-     close by (otherwise the array will be too large).  In case we have
-     to support a platform where these requirements are not fulfilled
-     some alternative implementation has to be used.  */
-  for (av = _dl_auxv; av->a_type != AT_NULL; ++av)
-    {
-      static const struct
-      {
-	const char label[20];
-	enum { unknown = 0, dec, hex, str, ignore } form;
-      } auxvars[] =
-	{
-	  [AT_EXECFD - 2] =		{ "AT_EXECFD:       ", dec },
-	  [AT_PHDR - 2] =		{ "AT_PHDR:         0x", hex },
-	  [AT_PHENT - 2] =		{ "AT_PHENT:        ", dec },
-	  [AT_PHNUM - 2] =		{ "AT_PHNUM:        ", dec },
-	  [AT_PAGESZ - 2] =		{ "AT_PAGESZ:       ", dec },
-	  [AT_BASE - 2] =		{ "AT_BASE:         0x", hex },
-	  [AT_FLAGS - 2] =		{ "AT_FLAGS:        0x", hex },
-	  [AT_ENTRY - 2] =		{ "AT_ENTRY:        0x", hex },
-	  [AT_NOTELF - 2] =		{ "AT_NOTELF:       ", hex },
-	  [AT_UID - 2] =		{ "AT_UID:          ", dec },
-	  [AT_EUID - 2] =		{ "AT_EUID:         ", dec },
-	  [AT_GID - 2] =		{ "AT_GID:          ", dec },
-	  [AT_EGID - 2] =		{ "AT_EGID:         ", dec },
-	  [AT_PLATFORM - 2] =		{ "AT_PLATFORM:     ", str },
-	  [AT_HWCAP - 2] =		{ "AT_HWCAP:        ", hex },
-	  [AT_CLKTCK - 2] =		{ "AT_CLKTCK:       ", dec },
-	  [AT_FPUCW - 2] =		{ "AT_FPUCW:        ", hex },
-	  [AT_DCACHEBSIZE - 2] =	{ "AT_DCACHEBSIZE:  0x", hex },
-	  [AT_ICACHEBSIZE - 2] =	{ "AT_ICACHEBSIZE:  0x", hex },
-	  [AT_UCACHEBSIZE - 2] =	{ "AT_UCACHEBSIZE:  0x", hex },
-	  [AT_IGNOREPPC - 2] =		{ "AT_IGNOREPPC", ignore },
-	  [AT_SECURE - 2] =		{ "AT_SECURE:       ", dec },
-	  [AT_SYSINFO - 2] =		{ "AT_SYSINFO:      0x", hex },
-	  [AT_SYSINFO_EHDR - 2] =	{ "AT_SYSINFO_EHDR: 0x", hex },
-	};
-      unsigned int idx = (unsigned int) (av->a_type - 2);
-
-      if ((unsigned int) av->a_type < 2u || auxvars[idx].form == ignore)
-	continue;
-
-      assert (AT_NULL == 0);
-      assert (AT_IGNORE == 1);
-
-      if (av->a_type == AT_HWCAP)
-	{
-	  /* This is handled special.  */
-	  if (_dl_procinfo (av->a_un.a_val) == 0)
-	    continue;
-	}
-
-      if (idx < sizeof (auxvars) / sizeof (auxvars[0])
-	  && auxvars[idx].form != unknown)
-	{
-	  const char *val = (char *) av->a_un.a_val;
-
-	  if (__builtin_expect (auxvars[idx].form, dec) == dec)
-	    val = _itoa ((unsigned long int) av->a_un.a_val,
-			 buf + sizeof buf - 1, 10, 0);
-	  else if (__builtin_expect (auxvars[idx].form, hex) == hex)
-	    val = _itoa ((unsigned long int) av->a_un.a_val,
-			 buf + sizeof buf - 1, 16, 0);
-
-	  _dl_printf ("%s%s\n", auxvars[idx].label, val);
-
-	  continue;
-	}
-
-      /* Unknown value: print a generic line.  */
-      char buf2[17];
-      buf[sizeof (buf2) - 1] = '\0';
-      const char *val2 = _itoa ((unsigned long int) av->a_un.a_val,
-				buf2 + sizeof buf2 - 1, 16, 0);
-      const char *val =  _itoa ((unsigned long int) av->a_type,
-				buf + sizeof buf - 1, 16, 0);
-      _dl_printf ("AT_??? (0x%s): 0x%s\n", val, val2);
-    }
-}
-
-
-/* Return an array of useful/necessary hardware capability names.  */
-const struct r_strlenpair *
-internal_function
-_dl_important_hwcaps (const char *platform, size_t platform_len, size_t *sz,
-		      size_t *max_capstrlen)
-{
-  /* Determine how many important bits are set.  */
-  uint64_t masked = GLRO(dl_hwcap) & GLRO(dl_hwcap_mask);
-  size_t cnt = platform != NULL;
-  size_t n, m;
-  size_t total;
-  struct r_strlenpair *temp;
-  struct r_strlenpair *result;
-  struct r_strlenpair *rp;
-  char *cp;
-
-  /* Count the number of bits set in the masked value.  */
-  for (n = 0; (~((1ULL << n) - 1) & masked) != 0; ++n)
-    if ((masked & (1ULL << n)) != 0)
-      ++cnt;
-
-#if (defined NEED_DL_SYSINFO || defined NEED_DL_SYSINFO_DSO) && defined SHARED
-  /* The system-supplied DSO can contain a note of type 2, vendor "GNU".
-     This gives us a list of names to treat as fake hwcap bits.  */
-
-  const char *dsocaps = NULL;
-  size_t dsocapslen = 0;
-  if (GLRO(dl_sysinfo_map) != NULL)
-    {
-      const ElfW(Phdr) *const phdr = GLRO(dl_sysinfo_map)->l_phdr;
-      const ElfW(Word) phnum = GLRO(dl_sysinfo_map)->l_phnum;
-      for (uint_fast16_t i = 0; i < phnum; ++i)
-	if (phdr[i].p_type == PT_NOTE)
-	  {
-	    const ElfW(Addr) start = (phdr[i].p_vaddr
-				      + GLRO(dl_sysinfo_map)->l_addr);
-	    const struct
-	    {
-	      ElfW(Word) vendorlen;
-	      ElfW(Word) datalen;
-	      ElfW(Word) type;
-	    } *note = (const void *) start;
-	    while ((ElfW(Addr)) (note + 1) - start < phdr[i].p_memsz)
-	      {
-#define ROUND(len) (((len) + sizeof (ElfW(Word)) - 1) & -sizeof (ElfW(Word)))
-		if (note->type == 2
-		    && note->vendorlen == sizeof "GNU"
-		    && !memcmp ((note + 1), "GNU", sizeof "GNU")
-		    && note->datalen > 2 * sizeof (ElfW(Word)) + 2)
-		  {
-		    const ElfW(Word) *p = ((const void *) (note + 1)
-					   + ROUND (sizeof "GNU"));
-		    cnt += *p++;
-		    ++p;	/* Skip mask word.  */
-		    dsocaps = (const char *) p;
-		    dsocapslen = note->datalen - sizeof *p * 2;
-		    break;
-		  }
-		note = ((const void *) (note + 1)
-			+ ROUND (note->vendorlen) + ROUND (note->datalen));
-	      }
-	    if (dsocaps != NULL)
-	      break;
-	  }
-    }
-#endif
-
-#ifdef USE_TLS
-  /* For TLS enabled builds always add 'tls'.  */
-  ++cnt;
-#else
-  if (cnt == 0)
-    {
-      /* If we no have platform name and no important capability we only
-	 have the base directory to search.  */
-      result = (struct r_strlenpair *) malloc (sizeof (*result));
-      if (result == NULL)
-	goto no_memory;
-
-      result[0].str = (char *) result;	/* Does not really matter.  */
-      result[0].len = 0;
-
-      *sz = 1;
-      return result;
-    }
-#endif
-
-  /* Create temporary data structure to generate result table.  */
-  temp = (struct r_strlenpair *) alloca (cnt * sizeof (*temp));
-  m = 0;
-#if defined NEED_DL_SYSINFO || defined NEED_DL_SYSINFO_DSO
-  if (dsocaps != NULL)
-    {
-      const ElfW(Word) mask = ((const ElfW(Word) *) dsocaps)[-1];
-      GLRO(dl_hwcap) |= (uint64_t) mask << _DL_FIRST_EXTRA;
-      size_t len;
-      for (const char *p = dsocaps; p < dsocaps + dsocapslen; p += len + 1)
-	{
-	  uint_fast8_t bit = *p++;
-	  len = strlen (p);
-
-	  /* Skip entries that are not enabled in the mask word.  */
-	  if (__builtin_expect (mask & ((ElfW(Word)) 1 << bit), 1))
-	    {
-	      temp[m].str = p;
-	      temp[m].len = len;
-	      ++m;
-	    }
-	  else
-	    --cnt;
-	}
-    }
-#endif
-  for (n = 0; masked != 0; ++n)
-    if ((masked & (1ULL << n)) != 0)
-      {
-	temp[m].str = _dl_hwcap_string (n);
-	temp[m].len = strlen (temp[m].str);
-	masked ^= 1ULL << n;
-	++m;
-      }
-  if (platform != NULL)
-    {
-      temp[m].str = platform;
-      temp[m].len = platform_len;
-      ++m;
-    }
-#ifdef USE_TLS
-  temp[m].str = "tls";
-  temp[m].len = 3;
-  ++m;
-#endif
-  assert (m == cnt);
-
-  /* Determine the total size of all strings together.  */
-  if (cnt == 1)
-    total = temp[0].len + 1;
-  else
-    {
-      total = temp[0].len + temp[cnt - 1].len + 2;
-      if (cnt > 2)
-	{
-	  total <<= 1;
-	  for (n = 1; n + 1 < cnt; ++n)
-	    total += temp[n].len + 1;
-	  if (cnt > 3
-	      && (cnt >= sizeof (size_t) * 8
-		  || total + (sizeof (*result) << 3)
-		     >= (1UL << (sizeof (size_t) * 8 - cnt + 3))))
-	    _dl_signal_error (ENOMEM, NULL, NULL,
-			      N_("cannot create capability list"));
-
-	  total <<= cnt - 3;
-	}
-    }
-
-  /* The result structure: we use a very compressed way to store the
-     various combinations of capability names.  */
-  *sz = 1 << cnt;
-  result = (struct r_strlenpair *) malloc (*sz * sizeof (*result) + total);
-  if (result == NULL)
-    {
-#ifndef USE_TLS
-    no_memory:
-#endif
-      _dl_signal_error (ENOMEM, NULL, NULL,
-			N_("cannot create capability list"));
-    }
-
-  if (cnt == 1)
-    {
-      result[0].str = (char *) (result + *sz);
-      result[0].len = temp[0].len + 1;
-      result[1].str = (char *) (result + *sz);
-      result[1].len = 0;
-      cp = __mempcpy ((char *) (result + *sz), temp[0].str, temp[0].len);
-      *cp = '/';
-      *sz = 2;
-      *max_capstrlen = result[0].len;
-
-      return result;
-    }
-
-  /* Fill in the information.  This follows the following scheme
-     (indeces from TEMP for four strings):
-	entry #0: 0, 1, 2, 3	binary: 1111
-	      #1: 0, 1, 3	        1101
-	      #2: 0, 2, 3	        1011
-	      #3: 0, 3		        1001
-     This allows the representation of all possible combinations of
-     capability names in the string.  First generate the strings.  */
-  result[1].str = result[0].str = cp = (char *) (result + *sz);
-#define add(idx) \
-      cp = __mempcpy (__mempcpy (cp, temp[idx].str, temp[idx].len), "/", 1);
-  if (cnt == 2)
-    {
-      add (1);
-      add (0);
-    }
-  else
-    {
-      n = 1 << (cnt - 1);
-      do
-	{
-	  n -= 2;
-
-	  /* We always add the last string.  */
-	  add (cnt - 1);
-
-	  /* Add the strings which have the bit set in N.  */
-	  for (m = cnt - 2; m > 0; --m)
-	    if ((n & (1 << m)) != 0)
-	      add (m);
-
-	  /* Always add the first string.  */
-	  add (0);
-	}
-      while (n != 0);
-    }
-#undef add
-
-  /* Now we are ready to install the string pointers and length.  */
-  for (n = 0; n < (1UL << cnt); ++n)
-    result[n].len = 0;
-  n = cnt;
-  do
-    {
-      size_t mask = 1 << --n;
-
-      rp = result;
-      for (m = 1 << cnt; m > 0; ++rp)
-	if ((--m & mask) != 0)
-	  rp->len += temp[n].len + 1;
-    }
-  while (n != 0);
-
-  /* The first half of the strings all include the first string.  */
-  n = (1 << cnt) - 2;
-  rp = &result[2];
-  while (n != (1UL << (cnt - 1)))
-    {
-      if ((--n & 1) != 0)
-	rp[0].str = rp[-2].str + rp[-2].len;
-      else
-	rp[0].str = rp[-1].str;
-      ++rp;
-    }
-
-  /* The second half starts right after the first part of the string of
-     the corresponding entry in the first half.  */
-  do
-    {
-      rp[0].str = rp[-(1 << (cnt - 1))].str + temp[cnt - 1].len + 1;
-      ++rp;
-    }
-  while (--n != 0);
-
-  /* The maximum string length.  */
-  *max_capstrlen = result[0].len;
-
-  return result;
-}