From 128c5f02859579ce15df18c5d443565778b2d3bf Mon Sep 17 00:00:00 2001 From: Heyi Guo Date: Tue, 27 Oct 2020 08:36:40 +0800 Subject: [PATCH] libc/printf: add support to print "%" character Enable printf() in TF-A to print "%" character as C standard, which may be used in platform porting to print percentage information. Signed-off-by: Heyi Guo Change-Id: I7af2f1d153548e426f423fce15dc48b0da56c622 --- lib/libc/printf.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/lib/libc/printf.c b/lib/libc/printf.c index 2715a72d4..45e153ec7 100644 --- a/lib/libc/printf.c +++ b/lib/libc/printf.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2014-2018, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2014-2021, ARM Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ @@ -108,6 +108,9 @@ int vprintf(const char *fmt, va_list args) /* Check the format specifier */ loop: switch (*fmt) { + case '%': + (void)putchar('%'); + break; case 'i': /* Fall through to next one */ case 'd': num = get_num_va_args(args, l_count);