Check if x86 binutils supports R_386_GOT32X/R_X86_64_GOTPCRELX

Define HAVE_LD_R_386_GOT32X to 1 if 32-bit x86 assembler generates
R_386_GOT32X for "jmp *foo@GOT".  Define HAVE_LD_R_X86_64_GOTPCRELX
to 1 if 64-bit x86 assembler generates R_X86_64_GOTPCRELX for
"jmp *foo@GOTPCREL(%rip)".

	* configure.ac (HAVE_LD_R_386_GOT32X): New.  Defined to 1
	if 32-bit assembler generates R_386_GOT32X for "jmp *foo@GOT".
	Otherise, defined to 0.
	(HAVE_LD_R_X86_64_GOTPCRELX): New.  Defined to 1 if 64-bit
	x86 assembler generates R_X86_64_GOTPCRELX for
	"jmp *foo@GOTPCREL(%rip)".
	* config.in: Regenerated.
	* configure: Likewise.

3 files changed, 119 insertions, 0 deletions

diff --git a/gcc/config.in b/gcc/config.in
index 77b386269ac..d32906d52cf 100644
--- a/gcc/config.in
+++ b/gcc/config.in
@@ -1507,6 +1507,19 @@
 #endif
 
 
+/* Define 0/1 if Define if your linker supports R_386_GOT32X relocation. */
+#ifndef USED_FOR_TARGET
+#undef HAVE_LD_R_386_GOT32X
+#endif
+
+
+/* Define 0/1 if Define if your linker supports R_X86_64_GOTPCRELX relocation.
+   */
+#ifndef USED_FOR_TARGET
+#undef HAVE_LD_R_X86_64_GOTPCRELX
+#endif
+
+
 /* Define if your linker supports the *_sol2 emulations. */
 #ifndef USED_FOR_TARGET
 #undef HAVE_LD_SOL2_EMULATION
diff --git a/gcc/configure b/gcc/configure
index e3883184461..0ce7d65a832 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -25779,6 +25779,67 @@ cat >>confdefs.h <<_ACEOF
 _ACEOF
 
 
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking linker for R_386_GOT32X relocation" >&5
+$as_echo_n "checking linker for R_386_GOT32X relocation... " >&6; }
+if test "${gcc_cv_ld_r_386_got32x+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  gcc_cv_ld_r_386_got32x=no
+       if test $in_tree_ld = yes ; then
+	 if grep R_386_GOT32X $srcdir/../include/elf/i386.h > /dev/null 2>&1; then
+	   gcc_cv_ld_r_386_got32x=yes
+	 fi
+       elif test x$gcc_cv_as != x -a x$gcc_cv_readelf != x; then
+	 cat > conftest.s <<EOF
+	 jmp *foo@GOT
+EOF
+	 if $gcc_cv_as --32 -o conftest.o conftest.s > /dev/null 2>&1; then
+	   if $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
+	      | grep R_386_GOT32X > /dev/null 2>&1; then
+	     gcc_cv_ld_r_386_got32x=yes
+	   fi
+	 fi
+       fi
+       rm -f conftest.s conftest.o
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_ld_r_386_got32x" >&5
+$as_echo "$gcc_cv_ld_r_386_got32x" >&6; }
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_LD_R_386_GOT32X `if test x"$gcc_cv_ld_r_386_got32x" = xyes; then echo 1; else echo 0; fi`
+_ACEOF
+
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking linker for R_X86_64_GOTPCRELX relocation" >&5
+$as_echo_n "checking linker for R_X86_64_GOTPCRELX relocation... " >&6; }
+if test "${gcc_cv_ld_r_x86_64_gotpcrelx+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  gcc_cv_ld_r_x86_64_gotpcrelx=no
+       if test $in_tree_ld = yes ; then
+	 if grep R_X86_64_GOTPCRELX $srcdir/../include/elf/i386.h > /dev/null 2>&1; then
+	   gcc_cv_ld_r_x86_64_gotpcrelx=yes
+	 fi
+       elif test x$gcc_cv_as != x -a x$gcc_cv_readelf != x; then
+	 cat > conftest.s <<EOF
+	 jmp *foo@GOTPCREL(%rip)
+EOF
+	 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1; then
+	   if $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
+	      | grep R_X86_64_GOTPCRELX > /dev/null 2>&1; then
+	     gcc_cv_ld_r_x86_64_gotpcrelx=yes
+	   fi
+	 fi
+       fi
+       rm -f conftest.s conftest.o
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_ld_r_x86_64_gotpcrelx" >&5
+$as_echo "$gcc_cv_ld_r_x86_64_gotpcrelx" >&6; }
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_LD_R_X86_64_GOTPCRELX `if test x"$gcc_cv_ld_r_x86_64_gotpcrelx" = xyes; then echo 1; else echo 0; fi`
+_ACEOF
+
     ;;
 
   ia64*-*-*)
diff --git a/gcc/configure.ac b/gcc/configure.ac
index 7d5cc9a14a7..afada9214ea 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -4137,6 +4137,51 @@ value:'
       [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`],
       [Define to 1 if your assembler and linker support @tlsldm.])
 
+    AC_CACHE_CHECK([linker for R_386_GOT32X relocation],
+      [gcc_cv_ld_r_386_got32x],
+      [gcc_cv_ld_r_386_got32x=no
+       if test $in_tree_ld = yes ; then
+	 if grep R_386_GOT32X $srcdir/../include/elf/i386.h > /dev/null 2>&1; then
+	   gcc_cv_ld_r_386_got32x=yes
+	 fi
+       elif test x$gcc_cv_as != x -a x$gcc_cv_readelf != x; then
+	 cat > conftest.s <<EOF
+	 jmp *foo@GOT
+EOF
+	 if $gcc_cv_as --32 -o conftest.o conftest.s > /dev/null 2>&1; then
+	   if $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
+	      | grep R_386_GOT32X > /dev/null 2>&1; then
+	     gcc_cv_ld_r_386_got32x=yes
+	   fi
+	 fi
+       fi
+       rm -f conftest.s conftest.o])
+    AC_DEFINE_UNQUOTED(HAVE_LD_R_386_GOT32X,
+      [`if test x"$gcc_cv_ld_r_386_got32x" = xyes; then echo 1; else echo 0; fi`],
+      [Define 0/1 if Define if your linker supports R_386_GOT32X relocation.])
+
+    AC_CACHE_CHECK([linker for R_X86_64_GOTPCRELX relocation],
+      [gcc_cv_ld_r_x86_64_gotpcrelx],
+      [gcc_cv_ld_r_x86_64_gotpcrelx=no
+       if test $in_tree_ld = yes ; then
+	 if grep R_X86_64_GOTPCRELX $srcdir/../include/elf/i386.h > /dev/null 2>&1; then
+	   gcc_cv_ld_r_x86_64_gotpcrelx=yes
+	 fi
+       elif test x$gcc_cv_as != x -a x$gcc_cv_readelf != x; then
+	 cat > conftest.s <<EOF
+	 jmp *foo@GOTPCREL(%rip)
+EOF
+	 if $gcc_cv_as --64 -o conftest.o conftest.s > /dev/null 2>&1; then
+	   if $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \
+	      | grep R_X86_64_GOTPCRELX > /dev/null 2>&1; then
+	     gcc_cv_ld_r_x86_64_gotpcrelx=yes
+	   fi
+	 fi
+       fi
+       rm -f conftest.s conftest.o])
+    AC_DEFINE_UNQUOTED(HAVE_LD_R_X86_64_GOTPCRELX,
+      [`if test x"$gcc_cv_ld_r_x86_64_gotpcrelx" = xyes; then echo 1; else echo 0; fi`],
+      [Define 0/1 if Define if your linker supports R_X86_64_GOTPCRELX relocation.])
     ;;
 
   ia64*-*-*)