proc_arch.s

eCos操作系统源码

##=============================================================================
##
##  proc_arch.S
##
##  mcf5272 processor code
##
##=============================================================================
##=============================================================================
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##=============================================================================

#include <pkgconf/hal.h>

#------------------------------------------------------------------------------
# function declaration macro

#define FUNC_START(name)                        \
        .text;                                  \
        .even;                                  \
        .globl name;                            \
name:

/* ************************************************************************ */
/* These routines write to  the special purpose  registers in the  ColdFire */
/* core.  Since these registers are write-only in the supervisor model,  no */
/* corresponding read routines exist.                                       */

FUNC_START(mcf5272_wr_mbar)
    move.l  4(%sp),%d0
    movec   %d0,%mbar
    nop
    rts

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