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[/] [openrisc/] [trunk/] [or1ksim/] [libtoplevel.c] - Diff between revs 19 and 82

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Rev 19 Rev 82
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#include "sim-config.h"
#include "sim-config.h"
#include "toplevel-support.h"
#include "toplevel-support.h"
#include "sched.h"
#include "sched.h"
#include "execute.h"
#include "execute.h"
#include "pic.h"
#include "pic.h"
 
#include "jtag.h"
 
 
 
 
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/*!Initialize the simulator.
/*!Initialize the simulator.
 
 
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  /* Loop until we have done enough cycles (or forever if we had a negative
  /* Loop until we have done enough cycles (or forever if we had a negative
     duration) */
     duration) */
  while (duration < 0.0 || (runtime.sim.cycles < runtime.sim.end_cycles))
  while (duration < 0.0 || (runtime.sim.cycles < runtime.sim.end_cycles))
    {
    {
 
 
      long long int time_start = runtime.sim.cycles;
      long long int time_start = runtime.sim.cycles;
      int i;                    /* Interrupt # */
      int i;                    /* Interrupt # */
 
 
      /* Each cycle has counter of mem_cycles; this value is joined with cycles
      /* Each cycle has counter of mem_cycles; this value is joined with cycles
       * at the end of the cycle; no sim originated memory accesses should be
       * at the end of the cycle; no sim originated memory accesses should be
       * performed inbetween.
       * performed in between. */
       */
 
 
 
      runtime.sim.mem_cycles = 0;
      runtime.sim.mem_cycles = 0;
 
 
      if (cpu_clock ())
      if (cpu_clock ())
        {
        {
          return OR1KSIM_RC_BRKPT;      /* Hit a breakpoint */
          return OR1KSIM_RC_BRKPT;      /* Hit a breakpoint */
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                }
                }
            }
            }
        }
        }
 
 
      /* Update the scheduler queue */
      /* Update the scheduler queue */
 
 
      scheduler.job_queue->time -= (runtime.sim.cycles - time_start);
      scheduler.job_queue->time -= (runtime.sim.cycles - time_start);
 
 
      if (scheduler.job_queue->time <= 0)
      if (scheduler.job_queue->time <= 0)
        {
        {
          do_scheduler ();
          do_scheduler ();
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    {
    {
      runtime.sim.ext_int_clr |= 1 << i;        // Better not be > 31!
      runtime.sim.ext_int_clr |= 1 << i;        // Better not be > 31!
    }
    }
}       /* or1ksim_interrupt() */
}       /* or1ksim_interrupt() */
 
 
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/*---------------------------------------------------------------------------*/
 
/*!Reset the JTAG interface
 
 
 
   @note Like all the JTAG interface functions, this must not be called
 
         re-entrantly while a call to any other function (e.g. or1kim_run ())
 
         is in progress. It is the responsibility of the caller to ensure this
 
         constraint is met, for example by use of a SystemC mutex.
 
 
 
   @return  The time in seconds which the reset took.                        */
 
/*---------------------------------------------------------------------------*/
 
double
 
or1ksim_jtag_reset ()
 
{
 
  return  (double) jtag_reset () * (double) config.debug.jtagcycle_ps / 1.0e12;
 
 
 
}       /* or1ksim_jtag_reset () */
 
 
 
 
 
/*---------------------------------------------------------------------------*/
 
/*!Shift a JTAG instruction register
 
 
 
   @note Like all the JTAG interface functions, this must not be called
 
         re-entrantly while a call to any other function (e.g. or1kim_run ())
 
         is in progress. It is the responsibility of the caller to ensure this
 
         constraint is met, for example by use of a SystemC mutex.
 
 
 
   The register is represented as a vector of bytes, with the byte at offset
 
   zero being shifted first, and the least significant bit in each byte being
 
   shifted first. Where the register will not fit in an exact number of bytes,
 
   the odd bits are in the highest numbered byte, shifted to the low end.
 
 
 
   The only JTAG instruction for which we have any significant behavior in
 
   this model is DEBUG. For completeness the register is parsed and a warning
 
   given if any register other than DEBUG is shifted.
 
 
 
   @param[in,out] jreg  The register to shift in, and the register shifted
 
                        back out.
 
 
 
   @return  The time in seconds which the shift took.                        */
 
/*---------------------------------------------------------------------------*/
 
double
 
or1ksim_jtag_shift_ir (unsigned char *jreg)
 
{
 
  return  (double) jtag_shift_ir (jreg) * (double) config.debug.jtagcycle_ps /
 
          1.0e12;
 
 
 
}       /* or1ksim_jtag_shift_ir () */
 
 
 
 
 
/*---------------------------------------------------------------------------*/
 
/*!Shift a JTAG data register
 
 
 
   @note Like all the JTAG interface functions, this must not be called
 
         re-entrantly while a call to any other function (e.g. or1kim_run ())
 
         is in progress. It is the responsibility of the caller to ensure this
 
         constraint is met, for example by use of a SystemC mutex.
 
 
 
   The register is represented as a vector of bytes, with the byte at offset
 
   zero being shifted first, and the least significant bit in each byte being
 
   shifted first. Where the register will not fit in an exact number of bytes,
 
   the odd bits are in the highest numbered byte, shifted to the low end.
 
 
 
   The register is parsed to determine which of the six possible register
 
   types it could be.
 
   - MODULE_SELECT
 
   - WRITE_COMMNAND
 
   - READ_COMMAND
 
   - GO_COMMAND
 
   - WRITE_CONTROL
 
   - READ_CONTROL
 
 
 
   @note In practice READ_COMMAND is not used. However the functionality is
 
         provided for future compatibility.
 
 
 
   @param[in,out] jreg  The register to shift in, and the register shifted
 
                        back out.
 
 
 
   @return  The time in seconds which the shift took.                        */
 
/*---------------------------------------------------------------------------*/
 
double
 
or1ksim_jtag_shift_dr (unsigned char *jreg)
 
{
 
  return  (double) jtag_shift_dr (jreg) * (double) config.debug.jtagcycle_ps /
 
          1.0e12;
 
 
 
}       /* or1ksim_jtag_shift_dr () */
 
 
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