diff options
Diffstat (limited to 'arch/arm/lib32/semihosting-trap.S')
| -rw-r--r-- | arch/arm/lib32/semihosting-trap.S | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/arm/lib32/semihosting-trap.S b/arch/arm/lib32/semihosting-trap.S new file mode 100644 index 0000000000..9e40ebfe21 --- /dev/null +++ b/arch/arm/lib32/semihosting-trap.S @@ -0,0 +1,28 @@ +/* + * semihosting-trap.S -- Assembly code needed to make a semihosting call + * + * Copyright (c) 2015 Zodiac Inflight Innovations + * Author: Andrey Smirnov <andrew.smirnov@gmail.com> + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * 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 General Public License for more details. + * + */ + +#include <linux/linkage.h> +#include <asm/unified.h> + +.section .text.semihosting_trap +ENTRY(semihosting_trap) + @ In supervisor mode SVC would clobber LR + push {lr} + ARM( svc #0x123456 ) + THUMB( svc #0xAB ) + pop {pc} +ENDPROC(semihosting_trap) |