ARK-OS/arkos/kernel/arch/arm64/include/asm/semihost.h

/* 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 _ARM64_SEMIHOST_H_
#define _ARM64_SEMIHOST_H_

struct uart_port;

static inline void smh_putc(struct uart_port *port, unsigned char c)
{
	asm volatile("mov  x1, %0\n"
		     "mov  x0, #3\n"
		     "hlt  0xf000\n"
		     : : "r" (&c) : "x0", "x1", "memory");
}

#endif /* _ARM64_SEMIHOST_H_ */