aarch64: add initial utility macros file

1 files changed, 50 insertions, 0 deletions

diff --git a/libass/aarch64/asm.S b/libass/aarch64/asm.S
new file mode 100644
index 0000000..3bddae0
--- /dev/null
+++ b/libass/aarch64/asm.S
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2021 rcombs
+ *
+ * This file is part of libass.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "config.h"
+
+.macro function name, export=1
+    .macro endfunc
+        .purgem endfunc
+    .endm
+    .text
+    .if \export
+        .global EXTERN_PREFIX\()ass_\name
+    .endif
+    .align 2
+    EXTERN_PREFIX\()ass_\name:
+.endmacro
+
+.macro const name, align=4
+    .macro endconst
+    .endm
+    .data
+    .align \align
+    \name:
+.endmacro
+
+.macro loadaddr reg, name
+#if CONFIG_DARWIN
+    adrp \reg, \name\()@PAGE
+    add \reg, \reg, #\name\()@PAGEOFF
+#elif !defined(PIC)
+    ldr \reg, =\name
+#else
+#error No support for PIC on this platform yet!
+#endif
+.endmacro