From 5584abf69d83169a010aca404cd1cf95c23ad9ef Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
Date: Fri, 12 Oct 2018 13:29:51 +0300
Subject: [PATCH] arm: Emit .thumb_func directives
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Prior to Xcode 9.3, the clang built-in assembler didn't support
altmacro, and gas-preprocessor was used for assembling for arm/darwin.

For thumb functions, gas-preprocessor took care of adding the .thumb_func
directives, but when now being able to assemble without gas-preprocessor,
we need to add these directives ourselves.

Signed-off-by: Martin Storsjö <martin@martin.st>
---
 libavutil/arm/asm.S | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/libavutil/arm/asm.S b/libavutil/arm/asm.S
index e7eea0271f..62ce493180 100644
--- a/libavutil/arm/asm.S
+++ b/libavutil/arm/asm.S
@@ -46,6 +46,12 @@
 #   define FPU @
 #endif
 
+#if CONFIG_THUMB && defined(__APPLE__)
+#   define TFUNC
+#else
+#   define TFUNC @
+#endif
+
 #if HAVE_AS_ARCH_DIRECTIVE
 #if   HAVE_NEON
         .arch           armv7-a
@@ -98,10 +104,12 @@ FUNC    .endfunc
         .global EXTERN_ASM\name
 ELF     .type   EXTERN_ASM\name, %function
 FUNC    .func   EXTERN_ASM\name
+TFUNC   .thumb_func EXTERN_ASM\name
 EXTERN_ASM\name:
     .else
 ELF     .type   \name, %function
 FUNC    .func   \name
+TFUNC   .thumb_func \name
 \name:
     .endif
 .endm