libc: armclang: Implement compiler printf symbols
armclang replaces calls to printf by calls to one of the symbols
__0printf, __1printf or __2printf. This patch adds new functions with
these names that internally call printf so that the Trusted Firmware can
be compiled with this compiler.
Change-Id: I06a0e3e5001232fe5b2577615666ddd66e81eef0
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/lib/aarch32/armclang_printf.S b/lib/aarch32/armclang_printf.S
new file mode 100644
index 0000000..2b87bf7
--- /dev/null
+++ b/lib/aarch32/armclang_printf.S
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <asm_macros.S>
+
+/* Symbols needed by armclang */
+
+ .globl __0printf
+ .globl __1printf
+ .globl __2printf
+
+func __0printf
+__1printf:
+__2printf:
+ b printf
+endfunc __0printf