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configure.ac: Add check for aarch64 assembler -mabi support.

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2013-12-11  Kugan Vivekanandarajah  <kuganv@linaro.org>

	* configure.ac: Add check for aarch64 assembler -mabi support.
	* configure: Regenerate.
	* config.in: Regenerate.
	* config/aarch64/aarch64-elf.h (ASM_MABI_SPEC): New define.
	(ASM_SPEC): Update to substitute -mabi with ASM_MABI_SPEC.
	* config/aarch64/aarch64.h (aarch64_override_options): Issue error
	if assembler does not support -mabi and option ilp32 is selected.
	* doc/install.texi: Added note that building gcc 4.9 and after
	with pre 2.24 binutils will not support -mabi=ilp32.

From-SVN: r205891
This commit is contained in:
Kugan Vivekanandarajah 2013-12-11 12:57:08 +00:00 committed by Christophe Lyon
parent 2ce064c344
commit 63892fa207
5 changed files with 65 additions and 2 deletions
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12
gcc/ChangeLog
View File

@ -1,3 +1,15 @@
2013-12-11 Kugan Vivekanandarajah <kuganv@linaro.org>
* configure.ac: Add check for aarch64 assembler -mabi support.
* configure: Regenerate.
* config.in: Regenerate.
* config/aarch64/aarch64-elf.h (ASM_MABI_SPEC): New define.
(ASM_SPEC): Update to substitute -mabi with ASM_MABI_SPEC.
* config/aarch64/aarch64.h (aarch64_override_options): Issue error
if assembler does not support -mabi and option ilp32 is selected.
* doc/install.texi: Added note that building gcc 4.9 and after
with pre 2.24 binutils will not support -mabi=ilp32.
2013-12-11 Marek Polacek <polacek@redhat.com>
PR sanitizer/59399

10
gcc/config/aarch64/aarch64-elf.h
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@ -134,13 +134,19 @@
" %{!mbig-endian:%{!mlittle-endian:" ENDIAN_SPEC "}}" \
" %{!mabi=*:" ABI_SPEC "}"
#ifdef HAVE_AS_MABI_OPTION
#define ASM_MABI_SPEC "%{mabi=*:-mabi=%*}"
#else
#define ASM_MABI_SPEC "%{mabi=lp64:}"
#endif
#ifndef ASM_SPEC
#define ASM_SPEC "\
%{mbig-endian:-EB} \
%{mlittle-endian:-EL} \
%{mcpu=*:-mcpu=%*} \
%{march=*:-march=%*} \
%{mabi=*:-mabi=%*}"
%{march=*:-march=%*}" \
ASM_MABI_SPEC
#endif
#undef TYPE_OPERAND_FMT

7
gcc/config/aarch64/aarch64.c
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@ -5187,6 +5187,13 @@ aarch64_override_options (void)
aarch64_parse_tune ();
}
#ifndef HAVE_AS_MABI_OPTION
/* The compiler may have been configured with 2.23.* binutils, which does
not have support for ILP32. */
if (TARGET_ILP32)
error ("Assembler does not support -mabi=ilp32");
#endif
initialize_aarch64_code_model ();
aarch64_build_bitmask_table ();

29
gcc/configure.ac
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@ -3494,6 +3494,35 @@ AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin,
AC_MSG_RESULT($gcc_cv_lto_plugin)
case "$target" in
aarch64*-*-*)
gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,,
[-mabi=lp64], [.text],,,)
if test x$gcc_cv_as_aarch64_mabi = xyes; then
AC_DEFINE(HAVE_AS_MABI_OPTION, 1,
[Define if your assembler supports the -mabi option.])
else
if test x$with_abi = xilp32; then
AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
Upgrade the Assembler.])
fi
if test x"$with_multilib_list" = xdefault; then
TM_MULTILIB_CONFIG=lp64
else
aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'`
for aarch64_multilib in ${aarch64_multilibs}; do
case ${aarch64_multilib} in
ilp32)
AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\
Upgrade the Assembler.])
;;
*)
;;
esac
done
fi
fi
;;
# All TARGET_ABI_OSF targets.
alpha*-*-linux* | alpha*-*-*bsd*)
gcc_GAS_CHECK_FEATURE([explicit relocation support],

9
gcc/doc/install.texi
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@ -3749,6 +3749,15 @@ is required to build GCC@. For GCC 3.3 and later, this is the default.
For gcc 3.4.3 and later, @option{--enable-libunwind-exceptions} is
removed and the system libunwind library will always be used.
@html
<hr />
@end html
@anchor{aarch64-x-x}
@heading aarch64*-*-*
Pre 2.24 binutils does not have support for selecting -mabi and does not
support ILP32. If GCC 4.9 or later is built with pre 2.24, GCC will not
support option -mabi=ilp32.
@html
<hr />
<!-- rs6000-ibm-aix*, powerpc-ibm-aix* -->