diff options
Diffstat (limited to '0216-Backport-SME-libgcc-aarch64-Configure-check-for-.var.patch')
| -rw-r--r-- | 0216-Backport-SME-libgcc-aarch64-Configure-check-for-.var.patch | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/0216-Backport-SME-libgcc-aarch64-Configure-check-for-.var.patch b/0216-Backport-SME-libgcc-aarch64-Configure-check-for-.var.patch new file mode 100644 index 0000000..6e8467e --- /dev/null +++ b/0216-Backport-SME-libgcc-aarch64-Configure-check-for-.var.patch @@ -0,0 +1,117 @@ +From e0da78a258a34c26488b7ae623f9ae8727c2b264 Mon Sep 17 00:00:00 2001 +From: Szabolcs Nagy <szabolcs.nagy@arm.com> +Date: Mon, 14 Nov 2022 17:14:18 +0000 +Subject: [PATCH 117/157] [Backport][SME] libgcc: aarch64: Configure check for + .variant_pcs support + +Reference: https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=3ebb591c65b4fbe0cddd23ebc0ca2d9f7aef2cec + +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. +--- + 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 f93c64a00..5dd96cdf6 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 1f9b2ac57..afe02b303 100755 +--- a/libgcc/configure ++++ b/libgcc/configure +@@ -5619,6 +5619,45 @@ $as_echo "#define HAVE_AS_LSE 1" >>confdefs.h + ;; + esac + ++ ++ ++case "${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 ${libgcc_cv_init_priority+:} false; then : +diff --git a/libgcc/configure.ac b/libgcc/configure.ac +index 2fc9d5d7c..abc398c91 100644 +--- a/libgcc/configure.ac ++++ b/libgcc/configure.ac +@@ -648,6 +648,23 @@ changequote([,])dnl + esac]) + LIBGCC_CHECK_AS_LSE + ++dnl Check if as supports .variant_pcs. ++AC_DEFUN([LIBGCC_CHECK_AS_VARIANT_PCS], [ ++case "${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(, +-- +2.33.0 + |