91 lines
3.1 KiB
Diff
91 lines
3.1 KiB
Diff
From 58b1f882644f839259505dde3205e226a1c649f1 Mon Sep 17 00:00:00 2001
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From: caiyinyu <caiyinyu@loongson.cn>
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Date: Tue, 11 Jul 2023 15:42:26 +0800
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Subject: [PATCH 10/14] glibc-2.28: config: Added HAVE_LOONGARCH_VEC_ASM.
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Change-Id: Iea464ea0c975a351682a60f66251167f6c79385b
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Signed-off-by: ticat_fp <fanpeng@loongson.cn>
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---
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config.h.in | 5 +++++
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sysdeps/loongarch/configure | 28 ++++++++++++++++++++++++++++
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sysdeps/loongarch/configure.ac | 15 +++++++++++++++
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3 files changed, 48 insertions(+)
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diff --git a/config.h.in b/config.h.in
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index 94d5ea36..fa53cc2d 100644
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--- a/config.h.in
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+++ b/config.h.in
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@@ -123,6 +123,11 @@
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/* RISC-V floating-point ABI for ld.so. */
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#undef RISCV_ABI_FLEN
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+/* Assembler support LoongArch LASX/LSX vector instructions.
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+ This macro becomes obsolete when glibc increased the minimum
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+ required version of GNU 'binutils' to 2.41 or later. */
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+#define HAVE_LOONGARCH_VEC_ASM 0
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+
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/* Linux specific: minimum supported kernel version. */
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#undef __LINUX_KERNEL_VERSION
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diff --git a/sysdeps/loongarch/configure b/sysdeps/loongarch/configure
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index 1e5abf81..0f0dae3a 100755
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--- a/sysdeps/loongarch/configure
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+++ b/sysdeps/loongarch/configure
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@@ -2,3 +2,31 @@
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# Local configure fragment for sysdeps/loongarch/elf.
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#AC_DEFINE(PI_STATIC_AND_HIDDEN)
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+
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+# Check if asm support vector instructions.
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+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for vector support in assembler" >&5
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+$as_echo_n "checking for vector support in assembler... " >&6; }
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+if ${libc_cv_loongarch_vec_asm+:} false; then :
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+ $as_echo_n "(cached) " >&6
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+else
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+ cat > conftest.s <<\EOF
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+ vld $vr0, $sp, 0
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+EOF
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+if { ac_try='${CC-cc} -c $CFLAGS conftest.s -o conftest 1>&5'
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+ { { eval echo "\"\$as_me\":${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; }; }; then
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+ libc_cv_loongarch_vec_asm=yes
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+else
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+ libc_cv_loongarch_vec_asm=no
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+fi
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+rm -f conftest*
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+fi
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+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_loongarch_vec_asm" >&5
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+$as_echo "$libc_cv_loongarch_vec_asm" >&6; }
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+if test $libc_cv_loongarch_vec_asm = yes; then
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+ $as_echo "#define HAVE_LOONGARCH_VEC_ASM 1" >>confdefs.h
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+
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+fi
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diff --git a/sysdeps/loongarch/configure.ac b/sysdeps/loongarch/configure.ac
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index 67b46ce0..aac0efa9 100644
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--- a/sysdeps/loongarch/configure.ac
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+++ b/sysdeps/loongarch/configure.ac
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@@ -4,3 +4,18 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
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dnl It is always possible to access static and hidden symbols in an
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dnl position independent way.
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#AC_DEFINE(PI_STATIC_AND_HIDDEN)
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+
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+# Check if asm support vector instructions.
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+AC_CACHE_CHECK(for vector support in assembler, libc_cv_loongarch_vec_asm, [dnl
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+cat > conftest.s <<\EOF
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+ vld $vr0, $sp, 0
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+EOF
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+if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s -o conftest 1>&AS_MESSAGE_LOG_FD); then
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+ libc_cv_loongarch_vec_asm=yes
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+else
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+ libc_cv_loongarch_vec_asm=no
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+fi
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+rm -f conftest*])
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+if test $libc_cv_loongarch_vec_asm = yes; then
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+ AC_DEFINE(HAVE_LOONGARCH_VEC_ASM)
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+fi
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--
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2.33.0
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