From 63892fa207fee716dfc34f94f9d2edfbc5fa84ca Mon Sep 17 00:00:00 2001 From: Kugan Vivekanandarajah Date: Wed, 11 Dec 2013 12:57:08 +0000 Subject: [PATCH] configure.ac: Add check for aarch64 assembler -mabi support. 2013-12-11 Kugan Vivekanandarajah * 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 --- gcc/ChangeLog | 12 ++++++++++++ gcc/config/aarch64/aarch64-elf.h | 10 ++++++++-- gcc/config/aarch64/aarch64.c | 7 +++++++ gcc/configure.ac | 29 +++++++++++++++++++++++++++++ gcc/doc/install.texi | 9 +++++++++ 5 files changed, 65 insertions(+), 2 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 8a8f8a9..7e82464 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,15 @@ +2013-12-11 Kugan Vivekanandarajah + + * 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 PR sanitizer/59399 diff --git a/gcc/config/aarch64/aarch64-elf.h b/gcc/config/aarch64/aarch64-elf.h index 4757d22..a66c3db 100644 --- a/gcc/config/aarch64/aarch64-elf.h +++ b/gcc/config/aarch64/aarch64-elf.h @@ -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 diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c index 1c881c8..afcf43f 100644 --- a/gcc/config/aarch64/aarch64.c +++ b/gcc/config/aarch64/aarch64.c @@ -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 (); diff --git a/gcc/configure.ac b/gcc/configure.ac index 1c667bb..59de08d 100644 --- a/gcc/configure.ac +++ b/gcc/configure.ac @@ -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], diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi index 85899b0..71aa7fc 100644 --- a/gcc/doc/install.texi +++ b/gcc/doc/install.texi @@ -3751,6 +3751,15 @@ removed and the system libunwind library will always be used. @html
+@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 +
@end html @anchor{x-ibm-aix} -- 2.7.4