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/*
* Port on Texas Instruments TMS320C6x architecture
*
* Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
* Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _ASM_C6X_SPECIAL_INSNS_H
#define _ASM_C6X_SPECIAL_INSNS_H
#define get_creg(reg) \
({ unsigned int __x; \
asm volatile ("mvc .s2 " #reg ",%0\n" : "=b"(__x)); __x; })
#define set_creg(reg, v) \
do { unsigned int __x = (unsigned int)(v); \
asm volatile ("mvc .s2 %0," #reg "\n" : : "b"(__x)); \
} while (0)
#define or_creg(reg, n) \
do { unsigned __x, __n = (unsigned)(n); \
asm volatile ("mvc .s2 " #reg ",%0\n" \
"or .l2 %1,%0,%0\n" \
"mvc .s2 %0," #reg "\n" \
"nop\n" \
: "=&b"(__x) : "b"(__n)); \
} while (0)
#define and_creg(reg, n) \
do { unsigned __x, __n = (unsigned)(n); \
asm volatile ("mvc .s2 " #reg ",%0\n" \
"and .l2 %1,%0,%0\n" \
"mvc .s2 %0," #reg "\n" \
"nop\n" \
: "=&b"(__x) : "b"(__n)); \
} while (0)
#define get_coreid() (get_creg(DNUM) & 0xff)
/* Set/get IST */
#define set_ist(x) set_creg(ISTP, x)
#define get_ist() get_creg(ISTP)
/*
* Exception management
*/
#define disable_exception()
#define get_except_type() get_creg(EFR)
#define ack_exception(type) set_creg(ECR, 1 << (type))
#define get_iexcept() get_creg(IERR)
#define set_iexcept(mask) set_creg(IERR, (mask))
#define _extu(x, s, e) \
({ unsigned int __x; \
asm volatile ("extu .S2 %3,%1,%2,%0\n" : \
"=b"(__x) : "n"(s), "n"(e), "b"(x)); \
__x; })
#endif /* _ASM_C6X_SPECIAL_INSNS_H */