/[gxemul]/trunk/src/device.c
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revision 2 by dpavlin, Mon Oct 8 16:17:48 2007 UTC revision 12 by dpavlin, Mon Oct 8 16:18:38 2007 UTC
# Line 25  Line 25 
25   *  SUCH DAMAGE.   *  SUCH DAMAGE.
26   *   *
27   *   *
28   *  $Id: device.c,v 1.13 2005/02/26 17:37:25 debug Exp $   *  $Id: device.c,v 1.16 2005/08/10 22:25:50 debug Exp $
29   *   *
30   *  Device registry framework.   *  Device registry framework.
31   */   */
# Line 164  struct device_entry *device_lookup(char Line 164  struct device_entry *device_lookup(char
164                  if (step == 0)                  if (step == 0)
165                          do_return = 1;                          do_return = 1;
166    
167                  step /= 2;                  if (step & 1)
168                            step = (step/2) + 1;
169                    else
170                            step /= 2;
171          }          }
172  }  }
173    
# Line 178  struct device_entry *device_lookup(char Line 181  struct device_entry *device_lookup(char
181   */   */
182  int device_unregister(char *name)  int device_unregister(char *name)
183  {  {
184          size_t i;          ssize_t i;
185          struct device_entry *p = device_lookup(name);          struct device_entry *p = device_lookup(name);
186    
187          if (p == NULL) {          if (p == NULL) {
# Line 213  int device_unregister(char *name) Line 216  int device_unregister(char *name)
216  /*  /*
217   *  device_add():   *  device_add():
218   *   *
219   *  Add a device to a machine.   *  Add a device to a machine. For example: "kn210 addr=0x12340000" adds a
220     *  device called "kn210" at a specific address.
221   *   *
222   *      "kn210 addr=0x12340000"   adds a kn210 device at a specific address.   *  TODO: This function is quite ugly, and should be cleaned up.
223   */   */
224  void *device_add(struct machine *machine, char *name_and_params)  void *device_add(struct machine *machine, char *name_and_params)
225  {  {
# Line 229  void *device_add(struct machine *machine Line 233  void *device_add(struct machine *machine
233    
234          /*  Default values:  */          /*  Default values:  */
235          devinit.addr_mult = 1;          devinit.addr_mult = 1;
236            devinit.in_use = 1;
237    
238          /*  Get the device name first:  */          /*  Get the device name first:  */
239          s2 = name_and_params;          s2 = name_and_params;
# Line 286  void *device_add(struct machine *machine Line 291  void *device_add(struct machine *machine
291                          devinit.addr_mult = mystrtoull(s3, NULL, 0);                          devinit.addr_mult = mystrtoull(s3, NULL, 0);
292                  } else if (strncmp(s2, "irq=", 4) == 0) {                  } else if (strncmp(s2, "irq=", 4) == 0) {
293                          devinit.irq_nr = mystrtoull(s3, NULL, 0);                          devinit.irq_nr = mystrtoull(s3, NULL, 0);
294                    } else if (strncmp(s2, "in_use=", 7) == 0) {
295                            devinit.in_use = mystrtoull(s3, NULL, 0);
296                    } else if (strncmp(s2, "name2=", 6) == 0) {
297                            char *h = s2 + 6;
298                            size_t len = 0;
299                            while (*h && *h != ' ')
300                                    h++, len++;
301                            devinit.name2 = malloc(len + 1);
302                            if (devinit.name2 == NULL) {
303                                    fprintf(stderr, "out of memory\n");
304                                    exit(1);
305                            }
306                            snprintf(devinit.name2, len + 1, s2 + 6);
307                  } else {                  } else {
308                          fatal("unknown param: %s\n", s2);                          fatal("unknown param: %s\n", s2);
309                          if (device_exit_on_error)                          if (device_exit_on_error)
# Line 349  void device_dumplist(void) Line 367  void device_dumplist(void)
367    
368  /*  /*
369   *  device_set_exit_on_error():   *  device_set_exit_on_error():
370     *
371     *  This function selects the behaviour of the emulator when a device is not
372     *  found. During startup, it is nicest to abort the whole emulator session,
373     *  but if a device addition is attempted from within the debugger, then it is
374     *  nicer to just print a warning and continue.
375   */   */
376  void device_set_exit_on_error(int exit_on_error)  void device_set_exit_on_error(int exit_on_error)
377  {  {
# Line 360  void device_set_exit_on_error(int exit_o Line 383  void device_set_exit_on_error(int exit_o
383   *  device_init():   *  device_init():
384   *   *
385   *  Initialize the device registry, and call autodev_init() to automatically   *  Initialize the device registry, and call autodev_init() to automatically
386   *  add all normal devices (from the devices/ directory).   *  add all normal devices (from the src/devices/ directory).
387   *   *
388   *  This function should be called before any other device_*() function is used.   *  This function should be called before any other device_*() function is used.
389   */   */
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