116 lines
3.7 KiB
Diff
116 lines
3.7 KiB
Diff
From 38c338555e64da83fd35c608a1a89d738e1ca356 Mon Sep 17 00:00:00 2001
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From: mengqinggang <mengqinggang@loongson.cn>
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Date: Fri, 15 Sep 2023 12:04:04 +0800
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Subject: [PATCH 003/188] Modify gas uleb128 support test
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Some assemblers (GNU as for LoongArch) generates relocations for leb128
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symbol arithmetic for relaxation, we need to disable relaxation probing
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leb128 support then.
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gcc/ChangeLog:
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* configure: Regenerate.
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* configure.ac: Checking assembler for -mno-relax support.
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Disable relaxation when probing leb128 support.
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co-authored-by: Xi Ruoyao <xry111@xry111.site>
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---
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gcc/configure | 42 +++++++++++++++++++++++++++++++++++++++++-
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gcc/configure.ac | 17 ++++++++++++++++-
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2 files changed, 57 insertions(+), 2 deletions(-)
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diff --git a/gcc/configure b/gcc/configure
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index 8ae8a924a..430d44dc3 100755
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--- a/gcc/configure
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+++ b/gcc/configure
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@@ -24441,6 +24441,46 @@ _ACEOF
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+# Some assemblers (GNU as for LoongArch) generates relocations for
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+# leb128 symbol arithmetic for relaxation, we need to disable relaxation
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+# probing leb128 support then.
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+case $target in
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+ loongarch*-*-*)
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+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for -mno-relax support" >&5
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+$as_echo_n "checking assembler for -mno-relax support... " >&6; }
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+if ${gcc_cv_as_mno_relax+:} false; then :
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+ $as_echo_n "(cached) " >&6
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+else
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+ gcc_cv_as_mno_relax=no
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+ if test x$gcc_cv_as != x; then
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+ $as_echo '.text' > conftest.s
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+ if { ac_try='$gcc_cv_as $gcc_cv_as_flags -mno-relax -o conftest.o conftest.s >&5'
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+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
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+ (eval $ac_try) 2>&5
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+ ac_status=$?
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+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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+ test $ac_status = 0; }; }
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+ then
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+ gcc_cv_as_mno_relax=yes
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+ else
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+ echo "configure: failed program was" >&5
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+ cat conftest.s >&5
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+ fi
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+ rm -f conftest.o conftest.s
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+ fi
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+fi
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+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_as_mno_relax" >&5
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+$as_echo "$gcc_cv_as_mno_relax" >&6; }
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+if test $gcc_cv_as_mno_relax = yes; then
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+ check_leb128_asflags=-mno-relax
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+fi
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+
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+ ;;
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+ *)
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+ check_leb128_asflags=
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+ ;;
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+esac
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+
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# Check if we have .[us]leb128, and support symbol arithmetic with it.
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# Older versions of GAS and some non-GNU assemblers, have a bugs handling
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# these directives, even when they appear to accept them.
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@@ -24459,7 +24499,7 @@ L1:
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L2:
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.uleb128 0x8000000000000000
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' > conftest.s
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- if { ac_try='$gcc_cv_as $gcc_cv_as_flags -o conftest.o conftest.s >&5'
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+ if { ac_try='$gcc_cv_as $gcc_cv_as_flags $check_leb128_asflags -o conftest.o conftest.s >&5'
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{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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diff --git a/gcc/configure.ac b/gcc/configure.ac
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index f7161e66e..4b24db190 100644
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--- a/gcc/configure.ac
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+++ b/gcc/configure.ac
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@@ -3185,10 +3185,25 @@ AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix)
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gcc_AC_INITFINI_ARRAY
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+# Some assemblers (GNU as for LoongArch) generates relocations for
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+# leb128 symbol arithmetic for relaxation, we need to disable relaxation
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+# probing leb128 support then.
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+case $target in
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+ loongarch*-*-*)
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+ gcc_GAS_CHECK_FEATURE([-mno-relax support],
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+ gcc_cv_as_mno_relax,[-mno-relax],[.text],,
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+ [check_leb128_asflags=-mno-relax])
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+ ;;
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+ *)
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+ check_leb128_asflags=
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+ ;;
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+esac
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+
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# Check if we have .[us]leb128, and support symbol arithmetic with it.
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# Older versions of GAS and some non-GNU assemblers, have a bugs handling
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# these directives, even when they appear to accept them.
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-gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,,
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+gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128,
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+[$check_leb128_asflags],
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[ .data
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.uleb128 L2 - L1
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L1:
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--
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2.43.0
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