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| author | mengqinggang <mengqinggang@loongson.cn> | 2023-09-15 12:04:04 +0800 |
|---|---|---|
| committer | Lulu Cheng <chenglulu@loongson.cn> | 2023-09-20 09:21:21 +0800 |
| commit | c44926fe2dc570103339dbb120914dabf655be07 (patch) | |
| tree | e0d8399bc04b6f3fd8637735accb9ac1e9d631cc | |
| parent | 9bab65a77049edcc7afc59532173206ee816e726 (diff) | |
| download | gcc-c44926fe2dc570103339dbb120914dabf655be07.zip gcc-c44926fe2dc570103339dbb120914dabf655be07.tar.gz gcc-c44926fe2dc570103339dbb120914dabf655be07.tar.bz2 | |
Modify gas uleb128 support test
Some assemblers (GNU as for LoongArch) generates relocations for leb128
symbol arithmetic for relaxation, we need to disable relaxation probing
leb128 support then.
gcc/ChangeLog:
* configure: Regenerate.
* configure.ac: Checking assembler for -mno-relax support.
Disable relaxation when probing leb128 support.
co-authored-by: Xi Ruoyao <xry111@xry111.site>
| -rwxr-xr-x | gcc/configure | 42 | ||||
| -rw-r--r-- | gcc/configure.ac | 17 |
2 files changed, 57 insertions, 2 deletions
diff --git a/gcc/configure b/gcc/configure index 0ba7ac0..d1ecc41 100755 --- a/gcc/configure +++ b/gcc/configure @@ -24699,6 +24699,46 @@ _ACEOF +# Some assemblers (GNU as for LoongArch) generates relocations for +# leb128 symbol arithmetic for relaxation, we need to disable relaxation +# probing leb128 support then. +case $target in + loongarch*-*-*) + { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for -mno-relax support" >&5 +$as_echo_n "checking assembler for -mno-relax support... " >&6; } +if ${gcc_cv_as_mno_relax+:} false; then : + $as_echo_n "(cached) " >&6 +else + gcc_cv_as_mno_relax=no + if test x$gcc_cv_as != x; then + $as_echo '.text' > conftest.s + if { ac_try='$gcc_cv_as $gcc_cv_as_flags -mno-relax -o conftest.o conftest.s >&5' + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 + (eval $ac_try) 2>&5 + ac_status=$? + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 + test $ac_status = 0; }; } + then + gcc_cv_as_mno_relax=yes + else + echo "configure: failed program was" >&5 + cat conftest.s >&5 + fi + rm -f conftest.o conftest.s + fi +fi +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_as_mno_relax" >&5 +$as_echo "$gcc_cv_as_mno_relax" >&6; } +if test $gcc_cv_as_mno_relax = yes; then + check_leb128_asflags=-mno-relax +fi + + ;; + *) + check_leb128_asflags= + ;; +esac + # Check if we have .[us]leb128, and support symbol arithmetic with it. # Older versions of GAS and some non-GNU assemblers, have a bugs handling # these directives, even when they appear to accept them. @@ -24717,7 +24757,7 @@ L1: L2: .uleb128 0x8000000000000000 ' > conftest.s - if { ac_try='$gcc_cv_as $gcc_cv_as_flags -o conftest.o conftest.s >&5' + if { ac_try='$gcc_cv_as $gcc_cv_as_flags $check_leb128_asflags -o conftest.o conftest.s >&5' { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5 (eval $ac_try) 2>&5 ac_status=$? diff --git a/gcc/configure.ac b/gcc/configure.ac index 8057a0a..3c0ab13 100644 --- a/gcc/configure.ac +++ b/gcc/configure.ac @@ -3251,10 +3251,25 @@ AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix) gcc_AC_INITFINI_ARRAY +# Some assemblers (GNU as for LoongArch) generates relocations for +# leb128 symbol arithmetic for relaxation, we need to disable relaxation +# probing leb128 support then. +case $target in + loongarch*-*-*) + gcc_GAS_CHECK_FEATURE([-mno-relax support], + gcc_cv_as_mno_relax,[-mno-relax],[.text],, + [check_leb128_asflags=-mno-relax]) + ;; + *) + check_leb128_asflags= + ;; +esac + # Check if we have .[us]leb128, and support symbol arithmetic with it. # Older versions of GAS and some non-GNU assemblers, have a bugs handling # these directives, even when they appear to accept them. -gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,, +gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128, +[$check_leb128_asflags], [ .data .uleb128 L2 - L1 L1: |