plf_stub.c

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//=============================================================================
//
//      plf_stub.c
//
//      Platform specific code for GDB stub support.
//
//=============================================================================
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// -------------------------------------------
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//####ECOSGPLCOPYRIGHTEND####
//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   nickg, jskov (based on the old tx39 hal_stub.c)
// Contributors:nickg, jskov, gthomas
// Date:        2000-03-10
// Purpose:     Platform specific code for GDB stub support.
//              
//####DESCRIPTIONEND####
//
//=============================================================================

#include <pkgconf/hal.h>

#ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS

#include <cyg/hal/hal_stub.h>
#include <cyg/hal/v850_common.h>

//-----------------------------------------------------------------------------
// Stub init

void hal_plf_stub_init(void)
{
    // Set up watchdog timer since we have to use it to emulate a breakpoint
    volatile unsigned char *wdcs = (volatile unsigned char *)V850_REG_WDCS;
    volatile unsigned char *wdtm = (volatile unsigned char *)V850_REG_WDTM;

    *wdcs = 0x07;  // lowest possible overhead - 246.7ms for 17MHz V850/SA1
                   // 209.7ms for 20MHz SB1
    *wdtm = 0x90;  // Start watchdog
}

#endif // ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
//-----------------------------------------------------------------------------
// End of plf_stub.c