Merge branches/gcc-7-branch rev 250046.

Change-Id: Iab4acacc1408cb2f8e03dd1d07ec9241c762f83a

16 files changed, 249 insertions, 12 deletions

diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index 06843b878ff..49f43871448 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,30 @@
+2017-07-04  Joseph Myers  <joseph@codesourcery.com>
+
+	* config/aarch64/linux-unwind.h (aarch64_fallback_frame_state),
+	config/alpha/linux-unwind.h (alpha_fallback_frame_state),
+	config/bfin/linux-unwind.h (bfin_fallback_frame_state),
+	config/i386/linux-unwind.h (x86_64_fallback_frame_state,
+	x86_fallback_frame_state), config/m68k/linux-unwind.h (struct
+	uw_ucontext), config/nios2/linux-unwind.h (struct nios2_ucontext),
+	config/pa/linux-unwind.h (pa32_fallback_frame_state),
+	config/riscv/linux-unwind.h (riscv_fallback_frame_state),
+	config/sh/linux-unwind.h (sh_fallback_frame_state),
+	config/tilepro/linux-unwind.h (tile_fallback_frame_state),
+	config/xtensa/linux-unwind.h (xtensa_fallback_frame_state): Use
+	ucontext_t instead of struct ucontext.
+
+2017-06-28  Richard Biener  <rguenther@suse.de>
+
+	Backport from mainline
+	2017-06-21  Richard Biener  <rguenther@suse.de>
+
+	PR gcov-profile/81080
+	* configure.ac: Add AC_SYS_LARGEFILE.
+	* libgcov.h: Include auto-target.h before tsystem.h to pick
+	up _FILE_OFFSET_BITS which might differ for multilibs.
+	* config.in: Regenerate.
+	* configure: Likewise.
+
 2017-05-26  Richard Henderson  <rth@redhat.com>
 
 	PR libgcc/80037
diff --git a/libgcc/config.in b/libgcc/config.in
index 25aa0d93bab..7de22ee0a72 100644
--- a/libgcc/config.in
+++ b/libgcc/config.in
@@ -71,3 +71,9 @@
 
 /* Define to 1 if the target use emutls for thread-local storage. */
 #undef USE_EMUTLS
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#undef _FILE_OFFSET_BITS
+
+/* Define for large files, on AIX-style hosts. */
+#undef _LARGE_FILES
diff --git a/libgcc/config/aarch64/linux-unwind.h b/libgcc/config/aarch64/linux-unwind.h
index d5d6980442f..d46d5f53be3 100644
--- a/libgcc/config/aarch64/linux-unwind.h
+++ b/libgcc/config/aarch64/linux-unwind.h
@@ -55,7 +55,7 @@ aarch64_fallback_frame_state (struct _Unwind_Context *context,
   struct rt_sigframe
   {
     siginfo_t info;
-    struct ucontext uc;
+    ucontext_t uc;
   };
 
   struct rt_sigframe *rt_;
diff --git a/libgcc/config/alpha/linux-unwind.h b/libgcc/config/alpha/linux-unwind.h
index a91a5f4fe26..7202516581d 100644
--- a/libgcc/config/alpha/linux-unwind.h
+++ b/libgcc/config/alpha/linux-unwind.h
@@ -51,7 +51,7 @@ alpha_fallback_frame_state (struct _Unwind_Context *context,
     {
       struct rt_sigframe {
 	siginfo_t info;
-	struct ucontext uc;
+	ucontext_t uc;
       } *rt_ = context->cfa;
       sc = &rt_->uc.uc_mcontext;
     }
diff --git a/libgcc/config/bfin/linux-unwind.h b/libgcc/config/bfin/linux-unwind.h
index 9412c7652b8..37e9feb6965 100644
--- a/libgcc/config/bfin/linux-unwind.h
+++ b/libgcc/config/bfin/linux-unwind.h
@@ -52,7 +52,7 @@ bfin_fallback_frame_state (struct _Unwind_Context *context,
 	void *puc;
 	char retcode[8];
 	siginfo_t info;
-	struct ucontext uc;
+	ucontext_t uc;
       } *rt_ = context->cfa;
 
       /* The void * cast is necessary to avoid an aliasing warning.
diff --git a/libgcc/config/i386/linux-unwind.h b/libgcc/config/i386/linux-unwind.h
index b1d5040a687..2009ad72260 100644
--- a/libgcc/config/i386/linux-unwind.h
+++ b/libgcc/config/i386/linux-unwind.h
@@ -58,7 +58,7 @@ x86_64_fallback_frame_state (struct _Unwind_Context *context,
   if (*(unsigned char *)(pc+0) == 0x48
       && *(unsigned long long *)(pc+1) == RT_SIGRETURN_SYSCALL)
     {
-      struct ucontext *uc_ = context->cfa;
+      ucontext_t *uc_ = context->cfa;
       /* The void * cast is necessary to avoid an aliasing warning.
          The aliasing warning is correct, but should not be a problem
          because it does not alias anything.  */
@@ -138,7 +138,7 @@ x86_fallback_frame_state (struct _Unwind_Context *context,
 	siginfo_t *pinfo;
 	void *puc;
 	siginfo_t info;
-	struct ucontext uc;
+	ucontext_t uc;
       } *rt_ = context->cfa;
       /* The void * cast is necessary to avoid an aliasing warning.
          The aliasing warning is correct, but should not be a problem
diff --git a/libgcc/config/m68k/linux-unwind.h b/libgcc/config/m68k/linux-unwind.h
index 82c7a297a6d..9ea39d454aa 100644
--- a/libgcc/config/m68k/linux-unwind.h
+++ b/libgcc/config/m68k/linux-unwind.h
@@ -33,7 +33,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 /* <sys/ucontext.h> is unfortunately broken right now.  */
 struct uw_ucontext {
 	unsigned long	  uc_flags;
-	struct ucontext  *uc_link;
+	ucontext_t	 *uc_link;
 	stack_t		  uc_stack;
 	mcontext_t	  uc_mcontext;
 	unsigned long	  uc_filler[80];
diff --git a/libgcc/config/nios2/linux-unwind.h b/libgcc/config/nios2/linux-unwind.h
index ae82efd6de6..204359d7b92 100644
--- a/libgcc/config/nios2/linux-unwind.h
+++ b/libgcc/config/nios2/linux-unwind.h
@@ -38,7 +38,7 @@ struct nios2_mcontext {
 
 struct nios2_ucontext {
   unsigned long uc_flags;
-  struct ucontext *uc_link;
+  ucontext_t *uc_link;
   stack_t uc_stack;
   struct nios2_mcontext uc_mcontext;
   sigset_t uc_sigmask;	/* mask last for extensibility */
diff --git a/libgcc/config/pa/linux-unwind.h b/libgcc/config/pa/linux-unwind.h
index 580c18dad69..c2c3409bcc1 100644
--- a/libgcc/config/pa/linux-unwind.h
+++ b/libgcc/config/pa/linux-unwind.h
@@ -80,7 +80,7 @@ pa32_fallback_frame_state (struct _Unwind_Context *context,
   struct sigcontext *sc;
   struct rt_sigframe {
     siginfo_t info;
-    struct ucontext uc;
+    ucontext_t uc;
   } *frame;
 
   /* rt_sigreturn trampoline:
diff --git a/libgcc/config/riscv/linux-unwind.h b/libgcc/config/riscv/linux-unwind.h
index a051a2869d4..1c8aeff7ef0 100644
--- a/libgcc/config/riscv/linux-unwind.h
+++ b/libgcc/config/riscv/linux-unwind.h
@@ -42,7 +42,7 @@ riscv_fallback_frame_state (struct _Unwind_Context *context,
   struct rt_sigframe
   {
     siginfo_t info;
-    struct ucontext uc;
+    ucontext_t uc;
   };
 
   struct rt_sigframe *rt_;
diff --git a/libgcc/config/sh/linux-unwind.h b/libgcc/config/sh/linux-unwind.h
index 1038caeb5c3..a8c98220282 100644
--- a/libgcc/config/sh/linux-unwind.h
+++ b/libgcc/config/sh/linux-unwind.h
@@ -82,7 +82,7 @@ sh_fallback_frame_state (struct _Unwind_Context *context,
     {
       struct rt_sigframe {
 	siginfo_t info;
-	struct ucontext uc;
+	ucontext_t uc;
       } *rt_ = context->cfa;
       /* The void * cast is necessary to avoid an aliasing warning.
          The aliasing warning is correct, but should not be a problem
diff --git a/libgcc/config/tilepro/linux-unwind.h b/libgcc/config/tilepro/linux-unwind.h
index a8dc4405715..dba3b410279 100644
--- a/libgcc/config/tilepro/linux-unwind.h
+++ b/libgcc/config/tilepro/linux-unwind.h
@@ -61,7 +61,7 @@ tile_fallback_frame_state (struct _Unwind_Context *context,
   struct rt_sigframe {
     unsigned char save_area[C_ABI_SAVE_AREA_SIZE];
     siginfo_t info;
-    struct ucontext uc;
+    ucontext_t uc;
   } *rt_;
 
   /* Return if this is not a signal handler.  */
diff --git a/libgcc/config/xtensa/linux-unwind.h b/libgcc/config/xtensa/linux-unwind.h
index 67c272820d0..2cb9eb1f739 100644
--- a/libgcc/config/xtensa/linux-unwind.h
+++ b/libgcc/config/xtensa/linux-unwind.h
@@ -67,7 +67,7 @@ xtensa_fallback_frame_state (struct _Unwind_Context *context,
 
   struct rt_sigframe {
     siginfo_t info;
-    struct ucontext uc;
+    ucontext_t uc;
   } *rt_;
 
   /* movi a2, __NR_rt_sigreturn; syscall */
diff --git a/libgcc/configure b/libgcc/configure
index 45c459788c3..42dda7fbeec 100644
--- a/libgcc/configure
+++ b/libgcc/configure
@@ -672,6 +672,7 @@ enable_version_specific_runtime_libs
 with_slibdir
 enable_maintainer_mode
 with_build_libsubdir
+enable_largefile
 enable_decimal_float
 with_system_libunwind
 enable_explicit_exception_frame_registration
@@ -1308,6 +1309,7 @@ Optional Features:
   --enable-maintainer-mode
                           enable make rules and dependencies not useful (and
                           sometimes confusing) to the casual installer
+  --disable-largefile     omit support for large files
   --enable-decimal-float={no,yes,bid,dpd}
 			enable decimal float extension to C.  Selecting 'bid'
 			or 'dpd' choses which decimal floating point format
@@ -4061,6 +4063,205 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 ac_c_preproc_warn_flag=yes
 
 
+# Check whether --enable-largefile was given.
+if test "${enable_largefile+set}" = set; then :
+  enableval=$enable_largefile;
+fi
+
+if test "$enable_largefile" != no; then
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for special C compiler options needed for large files" >&5
+$as_echo_n "checking for special C compiler options needed for large files... " >&6; }
+if test "${ac_cv_sys_largefile_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_cv_sys_largefile_CC=no
+     if test "$GCC" != yes; then
+       ac_save_CC=$CC
+       while :; do
+	 # IRIX 6.2 and later do not support large files by default,
+	 # so use the C compiler's -n32 option if that helps.
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+	 if ac_fn_c_try_compile "$LINENO"; then :
+  break
+fi
+rm -f core conftest.err conftest.$ac_objext
+	 CC="$CC -n32"
+	 if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_sys_largefile_CC=' -n32'; break
+fi
+rm -f core conftest.err conftest.$ac_objext
+	 break
+       done
+       CC=$ac_save_CC
+       rm -f conftest.$ac_ext
+    fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sys_largefile_CC" >&5
+$as_echo "$ac_cv_sys_largefile_CC" >&6; }
+  if test "$ac_cv_sys_largefile_CC" != no; then
+    CC=$CC$ac_cv_sys_largefile_CC
+  fi
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _FILE_OFFSET_BITS value needed for large files" >&5
+$as_echo_n "checking for _FILE_OFFSET_BITS value needed for large files... " >&6; }
+if test "${ac_cv_sys_file_offset_bits+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  while :; do
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_sys_file_offset_bits=no; break
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#define _FILE_OFFSET_BITS 64
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_sys_file_offset_bits=64; break
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  ac_cv_sys_file_offset_bits=unknown
+  break
+done
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sys_file_offset_bits" >&5
+$as_echo "$ac_cv_sys_file_offset_bits" >&6; }
+case $ac_cv_sys_file_offset_bits in #(
+  no | unknown) ;;
+  *)
+cat >>confdefs.h <<_ACEOF
+#define _FILE_OFFSET_BITS $ac_cv_sys_file_offset_bits
+_ACEOF
+;;
+esac
+rm -rf conftest*
+  if test $ac_cv_sys_file_offset_bits = unknown; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _LARGE_FILES value needed for large files" >&5
+$as_echo_n "checking for _LARGE_FILES value needed for large files... " >&6; }
+if test "${ac_cv_sys_large_files+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  while :; do
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_sys_large_files=no; break
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#define _LARGE_FILES 1
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_sys_large_files=1; break
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  ac_cv_sys_large_files=unknown
+  break
+done
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sys_large_files" >&5
+$as_echo "$ac_cv_sys_large_files" >&6; }
+case $ac_cv_sys_large_files in #(
+  no | unknown) ;;
+  *)
+cat >>confdefs.h <<_ACEOF
+#define _LARGE_FILES $ac_cv_sys_large_files
+_ACEOF
+;;
+esac
+rm -rf conftest*
+  fi
+fi
+
+
 
 # The cast to long int works around a bug in the HP C Compiler
 # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
diff --git a/libgcc/configure.ac b/libgcc/configure.ac
index af151473709..6bcaad651ff 100644
--- a/libgcc/configure.ac
+++ b/libgcc/configure.ac
@@ -191,6 +191,8 @@ GCC_NO_EXECUTABLES
 AC_PROG_CC
 AC_PROG_CPP_WERROR
 
+AC_SYS_LARGEFILE
+
 AC_CHECK_SIZEOF([double])
 AC_CHECK_SIZEOF([long double])
 AS_VAR_ARITH([double_type_size], [$ac_cv_sizeof_double \* 8])
diff --git a/libgcc/libgcov.h b/libgcc/libgcov.h
index 4c1204ca83c..eb5a9147bef 100644
--- a/libgcc/libgcov.h
+++ b/libgcc/libgcov.h
@@ -38,6 +38,7 @@
 /* This path will be used by libgcov runtime.  */
 
 #include "tconfig.h"
+#include "auto-target.h"
 #include "tsystem.h"
 #include "coretypes.h"
 #include "tm.h"