public inbox for gcc-cvs@sourceware.org
help / color / mirror / Atom feed
* [gcc(refs/vendors/ARM/heads/gcs-13)] libgcc: aarch64: Configure check for .variant_pcs support
@ 2024-02-14 15:35 Szabolcs Nagy
0 siblings, 0 replies; only message in thread
From: Szabolcs Nagy @ 2024-02-14 15:35 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:1e49593619dce3e594f41f6fcb80b52f0565405c
commit 1e49593619dce3e594f41f6fcb80b52f0565405c
Author: Szabolcs Nagy <szabolcs.nagy@arm.com>
Date: Mon Nov 14 17:14:18 2022 +0000
libgcc: aarch64: Configure check for .variant_pcs support
Ideally SME support routines in libgcc are marked as variant PCS symbols
so check if as supports the directive.
libgcc/ChangeLog:
* config.in: Undef HAVE_AS_VARIANT_PCS.
* configure: Regenerate.
* configure.ac: Check for .variant_pcs.
(cherry picked from commit 3ebb591c65b4fbe0cddd23ebc0ca2d9f7aef2cec)
Diff:
---
libgcc/config.in | 3 +++
libgcc/configure | 39 +++++++++++++++++++++++++++++++++++++++
libgcc/configure.ac | 17 +++++++++++++++++
3 files changed, 59 insertions(+)
diff --git a/libgcc/config.in b/libgcc/config.in
index f93c64a00c36..5dd96cdf648c 100644
--- a/libgcc/config.in
+++ b/libgcc/config.in
@@ -13,6 +13,9 @@
/* Define to 1 if the assembler supports LSE. */
#undef HAVE_AS_LSE
+/* Define to 1 if the assembler supports .variant_pcs. */
+#undef HAVE_AS_VARIANT_PCS
+
/* Define to 1 if the target assembler supports thread-local storage. */
#undef HAVE_CC_TLS
diff --git a/libgcc/configure b/libgcc/configure
index be5d45f1755c..537fa9836e1f 100755
--- a/libgcc/configure
+++ b/libgcc/configure
@@ -5620,6 +5620,45 @@ $as_echo "#define HAVE_AS_LSE 1" >>confdefs.h
;;
esac
+
+
+case "${target}" in
+aarch64*-*-*)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking if as supports .variant_pcs" >&5
+$as_echo_n "checking if as supports .variant_pcs... " >&6; }
+if ${libgcc_cv_as_variant_pcs+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+int
+main ()
+{
+asm (".variant_pcs foobar");
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ libgcc_cv_as_variant_pcs=yes
+else
+ libgcc_cv_as_variant_pcs=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgcc_cv_as_variant_pcs" >&5
+$as_echo "$libgcc_cv_as_variant_pcs" >&6; }
+ if test x$libgcc_cv_as_variant_pcs = xyes; then
+
+$as_echo "#define HAVE_AS_VARIANT_PCS 1" >>confdefs.h
+
+ fi
+ ;;
+esac
+
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for init priority support" >&5
$as_echo_n "checking for init priority support... " >&6; }
if ${libgcc_cv_init_priority+:} false; then :
diff --git a/libgcc/configure.ac b/libgcc/configure.ac
index 2fc9d5d7c93e..abc398c91e40 100644
--- a/libgcc/configure.ac
+++ b/libgcc/configure.ac
@@ -648,6 +648,23 @@ changequote([,])dnl
esac])
LIBGCC_CHECK_AS_LSE
+dnl Check if as supports .variant_pcs.
+AC_DEFUN([LIBGCC_CHECK_AS_VARIANT_PCS], [
+case "${target}" in
+aarch64*-*-*)
+ AC_CACHE_CHECK([if as supports .variant_pcs], libgcc_cv_as_variant_pcs, [
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,
+ [[asm (".variant_pcs foobar");]])],
+ [libgcc_cv_as_variant_pcs=yes], [libgcc_cv_as_variant_pcs=no])
+ ])
+ if test x$libgcc_cv_as_variant_pcs = xyes; then
+ AC_DEFINE(HAVE_AS_VARIANT_PCS, 1,
+ [Define to 1 if the assembler supports .variant_pcs.])
+ fi
+ ;;
+esac])
+LIBGCC_CHECK_AS_VARIANT_PCS
+
dnl Check if as supports RTM instructions.
AC_CACHE_CHECK(for init priority support, libgcc_cv_init_priority, [
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2024-02-14 15:35 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2024-02-14 15:35 [gcc(refs/vendors/ARM/heads/gcs-13)] libgcc: aarch64: Configure check for .variant_pcs support Szabolcs Nagy
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).