25 lines
537 B
C
25 lines
537 B
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2012 ARM Ltd.
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* Author: Marc Zyngier <marc.zyngier@arm.com>
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*
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* Adapted for ARM and earlycon:
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* Copyright (C) 2014 Linaro Ltd.
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* Author: Rob Herring <robh@kernel.org>
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*/
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#ifndef _ARM64_SEMIHOST_H_
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#define _ARM64_SEMIHOST_H_
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struct uart_port;
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static inline void smh_putc(struct uart_port *port, unsigned char c)
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{
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asm volatile("mov x1, %0\n"
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"mov x0, #3\n"
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"hlt 0xf000\n"
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: : "r" (&c) : "x0", "x1", "memory");
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}
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#endif /* _ARM64_SEMIHOST_H_ */
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