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Line 32... |
#include <unistd.h>
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#include <unistd.h>
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#include <stdarg.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdio.h>
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#include <errno.h>
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#include <errno.h>
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#include <signal.h>
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#include <signal.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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/* Package includes */
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/* Package includes */
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#include "toplevel-support.h"
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#include "toplevel-support.h"
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#include "sim-config.h"
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#include "sim-config.h"
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#include "debug-unit.h"
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#include "debug-unit.h"
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Line 70... |
/*! The list of reset hooks. Local to this source file */
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/*! The list of reset hooks. Local to this source file */
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static struct sim_reset_hook *sim_reset_hooks = NULL;
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static struct sim_reset_hook *sim_reset_hooks = NULL;
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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/*!Random number initialization
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This has become more important, since we rely on randomness to generate
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different MACs in Linux running on Or1ksim.
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We take our seed from /dev/urandom.
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If /dev/urandom is not available, we use srandom with the PID instead. */
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/*---------------------------------------------------------------------------*/
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void
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init_randomness ()
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{
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unsigned int seed;
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int fd;
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fd = open ("/dev/urandom", O_RDONLY);
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if (fd >= 0)
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{
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if (sizeof (seed) != read (fd, (void *) &seed, sizeof (seed)))
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{
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fprintf (stderr, "Warning: Unable to read /dev/random, using PID.\n");
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seed = getpid ();
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}
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}
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else
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{
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fprintf (stderr, "Warning: Unable to open /dev/random, using PID.\n");
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seed = getpid ();
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}
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srandom (seed);
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/* Print out the seed just in case we ever need to debug. Note that we
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cannot use PRINTF here, since the file handle will not yet have been set
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up. */
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printf ("Seeding random generator with value 0x%08x\n", seed);
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} /* init_randomness () */
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/*---------------------------------------------------------------------------*/
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/*!Signal handler for ctrl-C
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/*!Signal handler for ctrl-C
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Sets the iprompt flag, so the simulator will stop next time round the
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Sets the iprompt flag, so the simulator will stop next time round the
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loop. If the iprompt flag is set when we enter here, that means the
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loop. If the iprompt flag is set when we enter here, that means the
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simulator has not reacted since the last ctrl-C, so we kill the simulation.
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simulator has not reacted since the last ctrl-C, so we kill the simulation.
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