42 lines
955 B
C
42 lines
955 B
C
/* Copyright (c) 2014 The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <asm/barrier.h>
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static inline u32 __dcc_getstatus(void)
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{
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u32 __ret;
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asm volatile("mrs %0, mdccsr_el0" : "=r" (__ret)
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: : "cc");
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return __ret;
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}
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static inline char __dcc_getchar(void)
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{
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char __c;
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asm volatile("mrs %0, dbgdtrrx_el0" : "=r" (__c));
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isb();
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return __c;
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}
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static inline void __dcc_putchar(char c)
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{
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asm volatile("msr dbgdtrtx_el0, %0"
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: /* No output register */
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: "r" (c));
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isb();
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}
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