arm: make the assembler functions compatible with non ELF/gas platforms

Allow assembling arm neon functions for IOS and arm windows.

Signed-off-by: Martin Storsjö <martin@martin.st>
(cherry picked from commit ec4d9649d1c03fe8f578db38b41dccdf5e11b005)
Signed-off-by: Thomas Guillem <thomas@gllm.fr>
[Add modules/arm_neon/asm.S missing from orig tarball.]

Gbp-Pq: Name 0001-arm-make-the-assembler-functions-compatible-with-non.patch

diff --git a/modules/arm_neon/asm.S b/modules/arm_neon/asm.S
new file mode 100644 (file)
index 0000000..728391e
--- /dev/null
+++ b/modules/arm_neon/asm.S
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2018 Janne Grunau <janne-libav@jannau.net>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifdef __APPLE__
+#   define EXTERN_ASM _
+#else
+#   define EXTERN_ASM
+#endif
+
+#if defined(__APPLE__) || defined(_WIN32)
+#   define HAVE_AS_ARCH_DIRECTIVE 0
+#   define HAVE_AS_FPU_DIRECTIVE  0
+#else
+#   define HAVE_AS_ARCH_DIRECTIVE 1
+#   define HAVE_AS_FPU_DIRECTIVE  1
+#endif
+
+.macro  function name
+       .globl  EXTERN_ASM\name
+#ifdef __ELF__
+       .type   EXTERN_ASM\name, %function
+#endif
+EXTERN_ASM\name:
+.endm