trunk/src/device.c

/*
 *  Copyright (C) 2005  Anders Gavare.  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright  
 *     notice, this list of conditions and the following disclaimer in the 
 *     documentation and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 *  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 *  ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE   
 *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 *  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 *  OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 *  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 *  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 *  OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 *  SUCH DAMAGE.
 *
 *
 *  $Id: device.c,v 1.20 2005/11/22 16:26:35 debug Exp $
 *
 *  Device registry framework.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "device.h"
#include "memory.h"
#include "misc.h"


static struct device_entry *device_entries = NULL;
static int device_entries_sorted = 0;
static int n_device_entries = 0;
static int device_exit_on_error = 1;

static struct pci_entry *pci_entries = NULL;
static int n_pci_entries = 0;


/*
 *  device_entry_compar():
 *
 *  Internal function, used by sort_entries().
 */
static int device_entry_compar(const void *a, const void *b)
{
        struct device_entry *pa = (struct device_entry *) a;
        struct device_entry *pb = (struct device_entry *) b;

        return strcmp(pa->name, pb->name);
}


/*
 *  sort_entries():
 *
 *  Internal function. Sorts the device_entries array in alphabetic order.
 */
static void sort_entries(void)
{
        qsort(device_entries, n_device_entries, sizeof(struct device_entry),
            device_entry_compar);

        device_entries_sorted = 1;
}


/*
 *  device_register():
 *
 *  Registers a device. The device is added to the end of the device_entries
 *  array, and the sorted flag is set to zero.
 *
 *  NOTE: It would be a bad thing if two devices had the same name. However,
 *        that isn't checked here, it is up to the caller!
 *
 *  Return value is 1 if the device was registered, 0 otherwise.
 */
int device_register(char *name, int (*initf)(struct devinit *))
{
        device_entries = realloc(device_entries, sizeof(struct device_entry)
            * (n_device_entries + 1));
        if (device_entries == NULL) {
                fprintf(stderr, "device_register(): out of memory\n");
                exit(1);
        }

        memset(&device_entries[n_device_entries], 0,
            sizeof(struct device_entry));

        device_entries[n_device_entries].name = strdup(name);
        device_entries[n_device_entries].initf = initf;

        device_entries_sorted = 0;
        n_device_entries ++;
        return 1;
}


/*
 *  pci_register():
 *
 *  Registers a pci device. The pci device is added to the pci_entries array.
 *
 *  Return value is 1 if the pci device was registered. If it was not
 *  added, this function does not return.
 */
int pci_register(char *name, void (*initf)(struct machine *, struct memory *,
        struct pci_device *))
{
        pci_entries = realloc(pci_entries, sizeof(struct pci_entry)
            * (n_pci_entries + 1));
        if (pci_entries == NULL) {
                fprintf(stderr, "pci_register(): out of memory\n");
                exit(1);
        }

        memset(&pci_entries[n_pci_entries], 0, sizeof(struct pci_entry));

        pci_entries[n_pci_entries].name = strdup(name);
        pci_entries[n_pci_entries].initf = initf;
        n_pci_entries ++;
        return 1;
}


/*
 *  pci_lookup_initf():
 *
 *  Find a pci device init function by scanning the pci_entries array.
 *
 *  Return value is a function pointer, or NULL if the name was not found.
 */
void (*pci_lookup_initf(char *name))(struct machine *machine,
        struct memory *mem, struct pci_device *pd)
{
        int i;

        if (name == NULL) {
                fprintf(stderr, "pci_lookup_initf(): name = NULL\n");
                exit(1);
        }

        for (i=0; i<n_pci_entries; i++)
                if (strcmp(name, pci_entries[i].name) == 0)
                        return pci_entries[i].initf;
        return NULL;
}


/*
 *  device_lookup():
 *
 *  Lookup a device name by scanning the device_entries array (as a binary
 *  search tree).
 *
 *  Return value is a pointer to the device_entry on success, or a NULL pointer
 *  if there was no such device.
 */
struct device_entry *device_lookup(char *name)
{
        int hi, lo;

        if (name == NULL) {
                fprintf(stderr, "device_lookup(): NULL ptr\n");
                exit(1);
        }

        if (!device_entries_sorted)
                sort_entries();

        if (n_device_entries == 0)
                return NULL;

        lo = 0; hi = n_device_entries - 1;

        while (lo <= hi) {
                int r, i = (lo + hi) / 2;

                /*  printf("device_lookup(): i=%i (lo=%i hi=%i)\n", i, lo, hi);
                    printf("  name='%s', '%s'\n", name,
                    device_entries[i].name);  */

                r = strcmp(name, device_entries[i].name);
                if (r == 0) {
                        /*  Found it!  */
                        return &device_entries[i];
                }

                /*  Try left or right half:  */
                if (r < 0)
                        hi = i - 1;
                if (r > 0)
                        lo = i + 1;
        }

        return NULL;
}


/*
 *  device_unregister():
 *
 *  Unregisters a device.
 *
 *  Return value is 1 if a device was unregistered, 0 otherwise.
 */
int device_unregister(char *name)
{
        ssize_t i;
        struct device_entry *p = device_lookup(name);

        if (p == NULL) {
                fatal("device_unregister(): no such device (\"%s\")\n", name);
                return 0;
        }

        i = (size_t)p - (size_t)device_entries;
        i /= sizeof(struct device_entry);

        free(device_entries[i].name);
        device_entries[i].name = NULL;

        if (i == n_device_entries-1) {
                /*  Do nothing if we're removing the last array element.  */
        } else {
                /*  Remove array element i by copying the last element
                    to i's position:  */
                device_entries[i] = device_entries[n_device_entries-1];

                /*  The array is not sorted anymore:  */
                device_entries_sorted = 0;
        }

        n_device_entries --;

        /*  TODO: realloc?  */
        return 1;
}


/*
 *  device_add():
 *
 *  Add a device to a machine. For example: "kn210 addr=0x12340000" adds a
 *  device called "kn210" at a specific address.
 *
 *  TODO: This function is quite ugly, and should be cleaned up.
 */
void *device_add(struct machine *machine, char *name_and_params)
{
        struct device_entry *p;
        struct devinit devinit;
        char *s2, *s3;
        size_t len;

        memset(&devinit, 0, sizeof(struct devinit));
        devinit.machine = machine;

        /*  Default values:  */
        devinit.addr_mult = 1;
        devinit.in_use = 1;

        /*  Get the device name first:  */
        s2 = name_and_params;
        while (s2[0] != ',' && s2[0] != ' ' && s2[0] != '\0')
                s2 ++;

        len = (size_t)s2 - (size_t)name_and_params;
        devinit.name = malloc(len + 1);
        if (devinit.name == NULL) {
                fprintf(stderr, "device_add(): out of memory\n");
                exit(1);
        }
        memcpy(devinit.name, name_and_params, len);
        devinit.name[len] = '\0';

        p = device_lookup(devinit.name);
        if (p == NULL) {
                fatal("no such device (\"%s\")\n", devinit.name);
                if (device_exit_on_error)
                        exit(1);
                else
                        goto return_fail;
        }

        /*  Get params from name_and_params:  */
        while (*s2 != '\0') {
                /*  Skip spaces, commas, and semicolons:  */
                while (*s2 == ' ' || *s2 == ',' || *s2 == ';')
                        s2 ++;

                if (*s2 == '\0')
                        break;

                /*  s2 now points to the next param. eg "addr=1234"  */

                /*  Get a word (until there is a '=' sign):  */
                s3 = s2;
                while (*s3 != '=' && *s3 != '\0')
                        s3 ++;
                if (s3 == s2) {
                        fatal("weird param: %s\n", s2);
                        if (device_exit_on_error)
                                exit(1);
                        else
                                goto return_fail;
                }
                s3 ++;
                /*  s3 now points to the parameter value ("1234")  */

                if (strncmp(s2, "addr=", 5) == 0) {
                        devinit.addr = mystrtoull(s3, NULL, 0);
                } else if (strncmp(s2, "addr2=", 6) == 0) {
                        devinit.addr2 = mystrtoull(s3, NULL, 0);
                } else if (strncmp(s2, "len=", 4) == 0) {
                        devinit.len = mystrtoull(s3, NULL, 0);
                } else if (strncmp(s2, "addr_mult=", 10) == 0) {
                        devinit.addr_mult = mystrtoull(s3, NULL, 0);
                } else if (strncmp(s2, "pci_little_endian=", 18) == 0) {
                        devinit.pci_little_endian = mystrtoull(s3, NULL, 0);
                        switch (devinit.pci_little_endian) {
                        case 0: break;
                        case 1: devinit.pci_little_endian =
                                    MEM_PCI_LITTLE_ENDIAN;
                                break;
                        default:fatal("Bad pci_little_endian value.\n");
                                exit(1);
                        }
                } else if (strncmp(s2, "irq=", 4) == 0) {
                        devinit.irq_nr = mystrtoull(s3, NULL, 0);
                } else if (strncmp(s2, "in_use=", 7) == 0) {
                        devinit.in_use = mystrtoull(s3, NULL, 0);
                } else if (strncmp(s2, "name2=", 6) == 0) {
                        char *h = s2 + 6;
                        size_t len = 0;
                        while (*h && *h != ' ')
                                h++, len++;
                        devinit.name2 = malloc(len + 1);
                        if (devinit.name2 == NULL) {
                                fprintf(stderr, "out of memory\n");
                                exit(1);
                        }
                        snprintf(devinit.name2, len + 1, s2 + 6);
                } else {
                        fatal("unknown param: %s\n", s2);
                        if (device_exit_on_error)
                                exit(1);
                        else
                                goto return_fail;
                }

                /*  skip to the next param:  */
                s2 = s3;
                while (*s2 != '\0' && *s2 != ' ' && *s2 != ',' && *s2 != ';')
                        s2 ++;
        }


        /*
         *  Call the init function for this device:
         */

        devinit.return_ptr = NULL;

        if (!p->initf(&devinit)) {
                fatal("error adding device (\"%s\")\n", name_and_params);
                if (device_exit_on_error)
                        exit(1);
                else
                        goto return_fail;
        }

        free(devinit.name);
        return devinit.return_ptr;

return_fail:
        free(devinit.name);
        return NULL;
}


/*
 *  device_dumplist():
 *
 *  Dump a list of all registered devices.  (If the list is not sorted when
 *  this function is called, it is implicitly sorted.)
 */
void device_dumplist(void)
{
        int i;

        if (!device_entries_sorted)
                sort_entries();

        for (i=0; i<n_device_entries; i++) {
                debug("  %s", device_entries[i].name);

                /*  TODO: flags?  */

                debug("\n");
        }
}


/*
 *  device_set_exit_on_error():
 *
 *  This function selects the behaviour of the emulator when a device is not
 *  found. During startup, it is nicest to abort the whole emulator session,
 *  but if a device addition is attempted from within the debugger, then it is
 *  nicer to just print a warning and continue.
 */
void device_set_exit_on_error(int exit_on_error)
{
        device_exit_on_error = exit_on_error;
}


/*
 *  device_init():
 *
 *  Initialize the device registry, and call autodev_init() to automatically
 *  add all normal devices (from the src/devices/ directory).
 *
 *  This function should be called before any other device_*() function is used.
 */
void device_init(void)
{
        device_entries = NULL;
        device_entries_sorted = 0;
        n_device_entries = 0;

        autodev_init();
}

1	dpavlin	2	/*
2			* Copyright (C) 2005 Anders Gavare. All rights reserved.
3			*
4			* Redistribution and use in source and binary forms, with or without
5			* modification, are permitted provided that the following conditions are met:
6			*
7			* 1. Redistributions of source code must retain the above copyright
8			* notice, this list of conditions and the following disclaimer.
9			* 2. Redistributions in binary form must reproduce the above copyright
10			* notice, this list of conditions and the following disclaimer in the
11			* documentation and/or other materials provided with the distribution.
12			* 3. The name of the author may not be used to endorse or promote products
13			* derived from this software without specific prior written permission.
14			*
15			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18			* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25			* SUCH DAMAGE.
26			*
27			*
28	dpavlin	20	* $Id: device.c,v 1.20 2005/11/22 16:26:35 debug Exp $
29	dpavlin	2	*
30			* Device registry framework.
31			*/
32
33			#include <stdio.h>
34			#include <stdlib.h>
35			#include <string.h>
36
37			#include "device.h"
38	dpavlin	20	#include "memory.h"
39	dpavlin	2	#include "misc.h"
40
41
42			static struct device_entry *device_entries = NULL;
43			static int device_entries_sorted = 0;
44			static int n_device_entries = 0;
45			static int device_exit_on_error = 1;
46
47	dpavlin	20	static struct pci_entry *pci_entries = NULL;
48			static int n_pci_entries = 0;
49	dpavlin	2
50	dpavlin	20
51	dpavlin	2	/*
52			* device_entry_compar():
53			*
54			* Internal function, used by sort_entries().
55			*/
56			static int device_entry_compar(const void a, const void b)
57			{
58			struct device_entry pa = (struct device_entry ) a;
59			struct device_entry pb = (struct device_entry ) b;
60
61			return strcmp(pa->name, pb->name);
62			}
63
64
65			/*
66			* sort_entries():
67			*
68			* Internal function. Sorts the device_entries array in alphabetic order.
69			*/
70			static void sort_entries(void)
71			{
72			qsort(device_entries, n_device_entries, sizeof(struct device_entry),
73			device_entry_compar);
74
75			device_entries_sorted = 1;
76			}
77
78
79			/*
80			* device_register():
81			*
82			* Registers a device. The device is added to the end of the device_entries
83			* array, and the sorted flag is set to zero.
84			*
85			* NOTE: It would be a bad thing if two devices had the same name. However,
86			* that isn't checked here, it is up to the caller!
87			*
88			* Return value is 1 if the device was registered, 0 otherwise.
89			*/
90			int device_register(char name, int (initf)(struct devinit *))
91			{
92			device_entries = realloc(device_entries, sizeof(struct device_entry)
93			* (n_device_entries + 1));
94			if (device_entries == NULL) {
95			fprintf(stderr, "device_register(): out of memory\n");
96			exit(1);
97			}
98
99			memset(&device_entries[n_device_entries], 0,
100			sizeof(struct device_entry));
101
102			device_entries[n_device_entries].name = strdup(name);
103			device_entries[n_device_entries].initf = initf;
104
105			device_entries_sorted = 0;
106			n_device_entries ++;
107			return 1;
108			}
109
110
111			/*
112	dpavlin	20	* pci_register():
113			*
114			* Registers a pci device. The pci device is added to the pci_entries array.
115			*
116			* Return value is 1 if the pci device was registered. If it was not
117			* added, this function does not return.
118			*/
119			int pci_register(char name, void (initf)(struct machine , struct memory ,
120			struct pci_device *))
121			{
122			pci_entries = realloc(pci_entries, sizeof(struct pci_entry)
123			* (n_pci_entries + 1));
124			if (pci_entries == NULL) {
125			fprintf(stderr, "pci_register(): out of memory\n");
126			exit(1);
127			}
128
129			memset(&pci_entries[n_pci_entries], 0, sizeof(struct pci_entry));
130
131			pci_entries[n_pci_entries].name = strdup(name);
132			pci_entries[n_pci_entries].initf = initf;
133			n_pci_entries ++;
134			return 1;
135			}
136
137
138			/*
139			* pci_lookup_initf():
140			*
141			* Find a pci device init function by scanning the pci_entries array.
142			*
143			* Return value is a function pointer, or NULL if the name was not found.
144			*/
145			void (pci_lookup_initf(char name))(struct machine *machine,
146			struct memory mem, struct pci_device pd)
147			{
148			int i;
149
150			if (name == NULL) {
151			fprintf(stderr, "pci_lookup_initf(): name = NULL\n");
152			exit(1);
153			}
154
155			for (i=0; i<n_pci_entries; i++)
156			if (strcmp(name, pci_entries[i].name) == 0)
157			return pci_entries[i].initf;
158			return NULL;
159			}
160
161
162			/*
163	dpavlin	2	* device_lookup():
164			*
165			* Lookup a device name by scanning the device_entries array (as a binary
166			* search tree).
167			*
168			* Return value is a pointer to the device_entry on success, or a NULL pointer
169			* if there was no such device.
170			*/
171			struct device_entry device_lookup(char name)
172			{
173	dpavlin	20	int hi, lo;
174	dpavlin	2
175			if (name == NULL) {
176			fprintf(stderr, "device_lookup(): NULL ptr\n");
177			exit(1);
178			}
179
180			if (!device_entries_sorted)
181			sort_entries();
182
183			if (n_device_entries == 0)
184			return NULL;
185
186	dpavlin	20	lo = 0; hi = n_device_entries - 1;
187	dpavlin	2
188	dpavlin	20	while (lo <= hi) {
189			int r, i = (lo + hi) / 2;
190	dpavlin	2
191	dpavlin	20	/* printf("device_lookup(): i=%i (lo=%i hi=%i)\n", i, lo, hi);
192	dpavlin	2	printf(" name='%s', '%s'\n", name,
193			device_entries[i].name); */
194
195			r = strcmp(name, device_entries[i].name);
196	dpavlin	20	if (r == 0) {
197	dpavlin	2	/* Found it! */
198			return &device_entries[i];
199			}
200
201	dpavlin	20	/* Try left or right half: */
202			if (r < 0)
203			hi = i - 1;
204			if (r > 0)
205			lo = i + 1;
206			}
207	dpavlin	2
208	dpavlin	20	return NULL;
209	dpavlin	2	}
210
211
212			/*
213			* device_unregister():
214			*
215			* Unregisters a device.
216			*
217			* Return value is 1 if a device was unregistered, 0 otherwise.
218			*/
219			int device_unregister(char *name)
220			{
221	dpavlin	12	ssize_t i;
222	dpavlin	2	struct device_entry *p = device_lookup(name);
223
224			if (p == NULL) {
225			fatal("device_unregister(): no such device (\"%s\")\n", name);
226			return 0;
227			}
228
229			i = (size_t)p - (size_t)device_entries;
230			i /= sizeof(struct device_entry);
231
232			free(device_entries[i].name);
233			device_entries[i].name = NULL;
234
235			if (i == n_device_entries-1) {
236			/* Do nothing if we're removing the last array element. */
237			} else {
238			/* Remove array element i by copying the last element
239			to i's position: */
240			device_entries[i] = device_entries[n_device_entries-1];
241
242			/* The array is not sorted anymore: */
243			device_entries_sorted = 0;
244			}
245
246			n_device_entries --;
247
248			/* TODO: realloc? */
249			return 1;
250			}
251
252
253			/*
254			* device_add():
255			*
256	dpavlin	10	* Add a device to a machine. For example: "kn210 addr=0x12340000" adds a
257			* device called "kn210" at a specific address.
258	dpavlin	2	*
259	dpavlin	10	* TODO: This function is quite ugly, and should be cleaned up.
260	dpavlin	2	*/
261			void device_add(struct machine machine, char *name_and_params)
262			{
263			struct device_entry *p;
264			struct devinit devinit;
265			char s2, s3;
266			size_t len;
267
268			memset(&devinit, 0, sizeof(struct devinit));
269			devinit.machine = machine;
270
271			/* Default values: */
272			devinit.addr_mult = 1;
273	dpavlin	12	devinit.in_use = 1;
274	dpavlin	2
275			/* Get the device name first: */
276			s2 = name_and_params;
277			while (s2[0] != ',' && s2[0] != ' ' && s2[0] != '\0')
278			s2 ++;
279
280			len = (size_t)s2 - (size_t)name_and_params;
281			devinit.name = malloc(len + 1);
282			if (devinit.name == NULL) {
283			fprintf(stderr, "device_add(): out of memory\n");
284			exit(1);
285			}
286			memcpy(devinit.name, name_and_params, len);
287			devinit.name[len] = '\0';
288
289			p = device_lookup(devinit.name);
290			if (p == NULL) {
291			fatal("no such device (\"%s\")\n", devinit.name);
292			if (device_exit_on_error)
293			exit(1);
294			else
295			goto return_fail;
296			}
297
298			/* Get params from name_and_params: */
299			while (*s2 != '\0') {
300			/* Skip spaces, commas, and semicolons: */
301			while (s2 == ' ' \|\| s2 == ',' \|\| *s2 == ';')
302			s2 ++;
303
304			if (*s2 == '\0')
305			break;
306
307			/* s2 now points to the next param. eg "addr=1234" */
308
309			/* Get a word (until there is a '=' sign): */
310			s3 = s2;
311			while (s3 != '=' && s3 != '\0')
312			s3 ++;
313			if (s3 == s2) {
314			fatal("weird param: %s\n", s2);
315			if (device_exit_on_error)
316			exit(1);
317			else
318			goto return_fail;
319			}
320			s3 ++;
321			/* s3 now points to the parameter value ("1234") */
322
323			if (strncmp(s2, "addr=", 5) == 0) {
324			devinit.addr = mystrtoull(s3, NULL, 0);
325	dpavlin	20	} else if (strncmp(s2, "addr2=", 6) == 0) {
326			devinit.addr2 = mystrtoull(s3, NULL, 0);
327	dpavlin	2	} else if (strncmp(s2, "len=", 4) == 0) {
328			devinit.len = mystrtoull(s3, NULL, 0);
329			} else if (strncmp(s2, "addr_mult=", 10) == 0) {
330			devinit.addr_mult = mystrtoull(s3, NULL, 0);
331	dpavlin	20	} else if (strncmp(s2, "pci_little_endian=", 18) == 0) {
332			devinit.pci_little_endian = mystrtoull(s3, NULL, 0);
333			switch (devinit.pci_little_endian) {
334			case 0: break;
335			case 1: devinit.pci_little_endian =
336			MEM_PCI_LITTLE_ENDIAN;
337			break;
338			default:fatal("Bad pci_little_endian value.\n");
339			exit(1);
340			}
341	dpavlin	2	} else if (strncmp(s2, "irq=", 4) == 0) {
342			devinit.irq_nr = mystrtoull(s3, NULL, 0);
343	dpavlin	12	} else if (strncmp(s2, "in_use=", 7) == 0) {
344			devinit.in_use = mystrtoull(s3, NULL, 0);
345			} else if (strncmp(s2, "name2=", 6) == 0) {
346			char *h = s2 + 6;
347			size_t len = 0;
348			while (h && h != ' ')
349			h++, len++;
350			devinit.name2 = malloc(len + 1);
351			if (devinit.name2 == NULL) {
352			fprintf(stderr, "out of memory\n");
353			exit(1);
354			}
355			snprintf(devinit.name2, len + 1, s2 + 6);
356	dpavlin	2	} else {
357			fatal("unknown param: %s\n", s2);
358			if (device_exit_on_error)
359			exit(1);
360			else
361			goto return_fail;
362			}
363
364			/* skip to the next param: */
365			s2 = s3;
366			while (s2 != '\0' && s2 != ' ' && s2 != ',' && s2 != ';')
367			s2 ++;
368			}
369
370
371			/*
372			* Call the init function for this device:
373			*/
374
375			devinit.return_ptr = NULL;
376
377			if (!p->initf(&devinit)) {
378			fatal("error adding device (\"%s\")\n", name_and_params);
379			if (device_exit_on_error)
380			exit(1);
381			else
382			goto return_fail;
383			}
384
385			free(devinit.name);
386			return devinit.return_ptr;
387
388			return_fail:
389			free(devinit.name);
390			return NULL;
391			}
392
393
394			/*
395			* device_dumplist():
396			*
397			* Dump a list of all registered devices. (If the list is not sorted when
398			* this function is called, it is implicitly sorted.)
399			*/
400			void device_dumplist(void)
401			{
402			int i;
403
404			if (!device_entries_sorted)
405			sort_entries();
406
407			for (i=0; i<n_device_entries; i++) {
408			debug(" %s", device_entries[i].name);
409
410			/* TODO: flags? */
411
412			debug("\n");
413			}
414			}
415
416
417			/*
418			* device_set_exit_on_error():
419	dpavlin	10	*
420			* This function selects the behaviour of the emulator when a device is not
421			* found. During startup, it is nicest to abort the whole emulator session,
422			* but if a device addition is attempted from within the debugger, then it is
423			* nicer to just print a warning and continue.
424	dpavlin	2	*/
425			void device_set_exit_on_error(int exit_on_error)
426			{
427			device_exit_on_error = exit_on_error;
428			}
429
430
431			/*
432			* device_init():
433			*
434			* Initialize the device registry, and call autodev_init() to automatically
435	dpavlin	10	* add all normal devices (from the src/devices/ directory).
436	dpavlin	2	*
437			* This function should be called before any other device_*() function is used.
438			*/
439			void device_init(void)
440			{
441			device_entries = NULL;
442			device_entries_sorted = 0;
443			n_device_entries = 0;
444
445			autodev_init();
446			}
447