source: mypx/arch/m68k_gcc/prc_sil.h

/*
 *  TOPPERS Software
 *      Toyohashi Open Platform for Embedded Real-Time Systems
 * 
 *  Copyright (C) 2000-2003 by Embedded and Real-Time Systems Laboratory
 *                              Toyohashi Univ. of Technology, JAPAN
 *  Copyright (C) 2004-2008 by Embedded and Real-Time Systems Laboratory
 *              Graduate School of Information Science, Nagoya Univ., JAPAN
 * 
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 *  @(#) $Id$
 */

/*
 *              sil.h€Î¥×¥í¥»¥Ã¥µ°ÍžÉô¡ÊM68040ÍÑ¡Ë
 */

#ifndef TOPPERS_PRC_SIL_H
#define TOPPERS_PRC_SIL_H

#ifndef TOPPERS_MACRO_ONLY

/*
 *  NMI€òœü€¯€¹€Ù€Æ€Î³ä¹þ€ß€Î¶Ø»ß
 */
Inline uint16_t
TOPPERS_disint(void)
{
        uint16_t        TOPPERS_sr;

        Asm("move.w %%sr, %0" : "=g"(TOPPERS_sr));
        Asm("or.w #0x0700, %%sr" : : : "memory");
        return(TOPPERS_sr & 0x0700U);
}

/*
 *  ³ä¹þ€ßÍ¥ÀèÅÙ¥Þ¥¹¥¯¡ÊÆâÉôÉœžœ¡Ë€ÎžœºßÃÍ€ÎÀßÄê
 */
Inline void
TOPPERS_set_iipm(uint16_t TOPPERS_iipm)
{
        uint16_t        TOPPERS_sr;

        Asm("move.w %%sr, %0" : "=g"(TOPPERS_sr));
        Asm("move.w %0, %%sr" : : "g"((TOPPERS_sr & ~0x0700U) | TOPPERS_iipm)
                                                        : "memory");
}

/*
 *  ÁŽ³ä¹þ€ß¥í¥Ã¥¯ŸõÂÖ€ÎÀ©žæ
 */
#define SIL_PRE_LOC             uint16_t TOPPERS_iipm
#define SIL_LOC_INT()   ((void)(TOPPERS_iipm = TOPPERS_disint()))
#define SIL_UNL_INT()   (TOPPERS_set_iipm(TOPPERS_iipm))

/*
 *  ÈùŸ¯»þŽÖÂÔ€Á
 */
Inline void
sil_dly_nse(ulong_t dlytim)
{
        register uint32_t d0 asm("d0") = (uint32_t) dlytim;
        Asm("jsr _sil_dly_nse" : "=g"(d0) : "0"(d0));
}

#endif /* TOPPERS_MACRO_ONLY */

/*
 *  ¥×¥í¥»¥Ã¥µ€Î¥š¥ó¥Ç¥£¥¢¥ó
 */
#define SIL_ENDIAN_BIG                          /* ¥Ó¥Ã¥°¥š¥ó¥Ç¥£¥¢¥ó */

#endif /* TOPPERS_PRC_SIL_H */