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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2012 ARM Ltd.
* Author: Marc Zyngier <marc.zyngier@arm.com>
*
* Adapted for ARM and earlycon:
* Copyright (C) 2014 Linaro Ltd.
* Author: Rob Herring <robh@kernel.org>
*/
#ifndef _ARM_SEMIHOST_H_
#define _ARM_SEMIHOST_H_
#ifdef CONFIG_THUMB2_KERNEL
#define SEMIHOST_SWI "0xab"
#else
#define SEMIHOST_SWI "0x123456"
#endif
struct uart_port;
static inline void smh_putc(struct uart_port *port, unsigned char c)
{
asm volatile("mov r1, %0\n"
"mov r0, #3\n"
"svc " SEMIHOST_SWI "\n"
: : "r" (&c) : "r0", "r1", "memory");
}
#endif /* _ARM_SEMIHOST_H_ */
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