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Linux/arch/unicore32/include/mach/ocd.h

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  1 /*
  2  * linux/arch/unicore32/include/mach/ocd.h
  3  *
  4  * Code specific to PKUnity SoC and UniCore ISA
  5  *
  6  * Copyright (C) 2001-2010 GUAN Xue-tao
  7  *
  8  * This program is free software; you can redistribute it and/or modify
  9  * it under the terms of the GNU General Public License version 2 as
 10  * published by the Free Software Foundation.
 11  */
 12 
 13 #ifndef __MACH_PUV3_OCD_H__
 14 #define __MACH_PUV3_OCD_H__
 15 
 16 #if defined(CONFIG_DEBUG_OCD)
 17 static inline void ocd_putc(unsigned int c)
 18 {
 19         int status, i = 0x2000000;
 20 
 21         do {
 22                 if (--i < 0)
 23                         return;
 24 
 25                 asm volatile ("movc %0, p1.c0, #0" : "=r" (status));
 26         } while (status & 2);
 27 
 28         asm("movc p1.c1, %0, #1" : : "r" (c));
 29 }
 30 
 31 #define putc(ch)        ocd_putc(ch)
 32 #else
 33 #define putc(ch)
 34 #endif
 35 
 36 #endif
 37 

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