89 lines
2.8 KiB
Diff
89 lines
2.8 KiB
Diff
commit 77d175e14e5f4cf24e9579c03eef5d006a286316
|
|
Author: Naohiro Tamura <naohirot@jp.fujitsu.com>
|
|
Date: Wed May 12 09:26:40 2021 +0000
|
|
|
|
config: Added HAVE_AARCH64_SVE_ASM for aarch64
|
|
|
|
This patch checks if assembler supports '-march=armv8.2-a+sve' to
|
|
generate SVE code or not, and then define HAVE_AARCH64_SVE_ASM macro.
|
|
|
|
Conflicts:
|
|
config.h.in
|
|
(missing PAC+BTI support downstream, missing other ports)
|
|
|
|
diff --git a/config.h.in b/config.h.in
|
|
index 8520b0fa8d4668fb..94d5ea367e10f849 100644
|
|
--- a/config.h.in
|
|
+++ b/config.h.in
|
|
@@ -112,6 +112,11 @@
|
|
/* AArch64 big endian ABI */
|
|
#undef HAVE_AARCH64_BE
|
|
|
|
+/* Assembler support ARMv8.2-A SVE.
|
|
+ This macro becomes obsolete when glibc increased the minimum
|
|
+ required version of GNU 'binutils' to 2.28 or later. */
|
|
+#define HAVE_AARCH64_SVE_ASM 0
|
|
+
|
|
/* RISC-V integer ABI for ld.so. */
|
|
#undef RISCV_ABI_XLEN
|
|
|
|
diff --git a/sysdeps/aarch64/configure b/sysdeps/aarch64/configure
|
|
index f78a79338aba1e34..9fb713155d4ee6d8 100644
|
|
--- a/sysdeps/aarch64/configure
|
|
+++ b/sysdeps/aarch64/configure
|
|
@@ -212,3 +212,31 @@ fi
|
|
$as_echo "$libc_cv_aarch64_variant_pcs" >&6; }
|
|
config_vars="$config_vars
|
|
aarch64-variant-pcs = $libc_cv_aarch64_variant_pcs"
|
|
+
|
|
+# Check if asm support armv8.2-a+sve
|
|
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for SVE support in assembler" >&5
|
|
+$as_echo_n "checking for SVE support in assembler... " >&6; }
|
|
+if ${libc_cv_asm_sve+:} false; then :
|
|
+ $as_echo_n "(cached) " >&6
|
|
+else
|
|
+ cat > conftest.s <<\EOF
|
|
+ ptrue p0.b
|
|
+EOF
|
|
+if { ac_try='${CC-cc} -c -march=armv8.2-a+sve conftest.s 1>&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
|
|
+ libc_cv_aarch64_sve_asm=yes
|
|
+else
|
|
+ libc_cv_aarch64_sve_asm=no
|
|
+fi
|
|
+rm -f conftest*
|
|
+fi
|
|
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_sve" >&5
|
|
+$as_echo "$libc_cv_asm_sve" >&6; }
|
|
+if test $libc_cv_aarch64_sve_asm = yes; then
|
|
+ $as_echo "#define HAVE_AARCH64_SVE_ASM 1" >>confdefs.h
|
|
+
|
|
+fi
|
|
diff --git a/sysdeps/aarch64/configure.ac b/sysdeps/aarch64/configure.ac
|
|
index 7f13bfb93b60bfd7..0236cfcdf3c8d10d 100644
|
|
--- a/sysdeps/aarch64/configure.ac
|
|
+++ b/sysdeps/aarch64/configure.ac
|
|
@@ -42,3 +42,18 @@ EOF
|
|
fi
|
|
rm -rf conftest.*])
|
|
LIBC_CONFIG_VAR([aarch64-variant-pcs], [$libc_cv_aarch64_variant_pcs])
|
|
+
|
|
+# Check if asm support armv8.2-a+sve
|
|
+AC_CACHE_CHECK(for SVE support in assembler, libc_cv_asm_sve, [dnl
|
|
+cat > conftest.s <<\EOF
|
|
+ ptrue p0.b
|
|
+EOF
|
|
+if AC_TRY_COMMAND(${CC-cc} -c -march=armv8.2-a+sve conftest.s 1>&AS_MESSAGE_LOG_FD); then
|
|
+ libc_cv_aarch64_sve_asm=yes
|
|
+else
|
|
+ libc_cv_aarch64_sve_asm=no
|
|
+fi
|
|
+rm -f conftest*])
|
|
+if test $libc_cv_aarch64_sve_asm = yes; then
|
|
+ AC_DEFINE(HAVE_AARCH64_SVE_ASM)
|
|
+fi
|