0.4.1/src/symbol.c

/*
 *  Copyright (C) 2003-2005  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: symbol.c,v 1.33 2005/10/26 14:37:02 debug Exp $
 *
 *  Address to symbol translation routines.
 *
 *  This module is (probably) independent from the rest of the emulator.
 *  symbol_init() must be called before any other function in this file is used.
 */

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

#include "misc.h"

#include "symbol.h"


#define SYMBOLBUF_MAX   100


/*
 *  symbol_nsymbols():
 *
 *  Return n_symbols.
 */
int symbol_nsymbols(struct symbol_context *sc)
{
        return sc->n_symbols;
}


/*
 *  get_symbol_addr():
 *
 *  Find a symbol by name. If addr is non-NULL, *addr is set to the symbol's
 *  address. Return value is 1 if the symbol is found, 0 otherwise.
 *
 *  NOTE:  This is O(n).
 */
int get_symbol_addr(struct symbol_context *sc, char *symbol, uint64_t *addr)
{
        struct symbol *s;

        if (sc->sorted_array) {
                int i;
                for (i=0; i<sc->n_symbols; i++)
                        if (strcmp(symbol, sc->first_symbol[i].name) == 0) {
                                if (addr != NULL)
                                        *addr = sc->first_symbol[i].addr;
                                return 1;
                        }
        } else {
                s = sc->first_symbol;
                while (s != NULL) {
                        if (strcmp(symbol, s->name) == 0) {
                                if (addr != NULL)
                                        *addr = s->addr;
                                return 1;
                        }
                        s = s->next;
                }
        }

        return 0;
}


/*
 *  get_symbol_name_and_n_args():
 *
 *  Translate an address into a symbol name.  The return value is a pointer
 *  to a static char array, containing the symbol name.  (In other words,
 *  this function is not reentrant. This removes the need for memory allocation
 *  at the caller's side.)
 *
 *  If offset is not a NULL pointer, *offset is set to the offset within
 *  the symbol. For example, if there is a symbol at address 0x1000 with
 *  length 0x100, and a caller wants to know the symbol name of address
 *  0x1008, the symbol's name will be found in the static char array, and
 *  *offset will be set to 0x8.
 *
 *  If n_argsp is non-NULL, *n_argsp is set to the symbol's n_args value.
 *
 *  If no symbol was found, NULL is returned instead.
 */
static char symbol_buf[SYMBOLBUF_MAX+1];
char *get_symbol_name_and_n_args(struct symbol_context *sc, uint64_t addr,
        uint64_t *offset, int *n_argsp)
{
        struct symbol *s;
        int stepsize, ofs;

        if (sc->n_symbols == 0)
                return NULL;

        if ((addr >> 32) == 0 && (addr & 0x80000000ULL))
                addr |= 0xffffffff00000000ULL;

        symbol_buf[0] = symbol_buf[SYMBOLBUF_MAX] = '\0';
        if (offset != NULL)
                *offset = 0;

        if (!sc->sorted_array) {
                /*  Slow, linear O(n) search:  */
                s = sc->first_symbol;
                while (s != NULL) {
                        /*  Found a match?  */
                        if (addr >= s->addr && addr < s->addr + s->len) {
                                if (addr == s->addr)
                                        snprintf(symbol_buf, SYMBOLBUF_MAX,
                                            "%s", s->name);
                                else
                                        snprintf(symbol_buf, SYMBOLBUF_MAX,
                                            "%s+0x%lx", s->name, (long)
                                            (addr - s->addr));
                                if (offset != NULL)
                                        *offset = addr - s->addr;
                                if (n_argsp != NULL)
                                        *n_argsp = s->n_args;
                                return symbol_buf;
                        }
                        s = s->next;
                }
        } else {
                /*  Faster, O(log n) search:  */
                stepsize = sc->n_symbols / 2;
                ofs = stepsize;
                while (stepsize > 0 || (stepsize == 0 && ofs == 0)) {
                        s = sc->first_symbol + ofs;

                        /*  Found a match?  */
                        if (addr >= s->addr && addr < s->addr + s->len) {
                                if (addr == s->addr)
                                        snprintf(symbol_buf, SYMBOLBUF_MAX,
                                            "%s", s->name);
                                else
                                        snprintf(symbol_buf, SYMBOLBUF_MAX,
                                            "%s+0x%lx", s->name, (long)
                                            (addr - s->addr));
                                if (offset != NULL)
                                        *offset = addr - s->addr;
                                if (n_argsp != NULL)
                                        *n_argsp = s->n_args;
                                return symbol_buf;
                        }

                        if (ofs == 0)
                                break;

                        stepsize >>= 1;

                        /*  Special case for offset 0 (end of search in
                            the Left direction  */
                        if (stepsize == 0)
                                ofs = 0;
                        else {
                                if (addr < s->addr)
                                        ofs -= stepsize;
                                else
                                        ofs += stepsize;
                        }
                }
        }

        /*  Not found? Then return NULL.  */
        return NULL;
}


/*
 *  get_symbol_name():
 *
 *  See get_symbol_name_and_n_args().
 */
char *get_symbol_name(struct symbol_context *sc, uint64_t addr, uint64_t *offs)
{
        return get_symbol_name_and_n_args(sc, addr, offs, NULL);
}


/*
 *  add_symbol_name():
 *
 *  Add a symbol to the symbol list.
 */
void add_symbol_name(struct symbol_context *sc,
        uint64_t addr, uint64_t len, char *name, int type, int n_args)
{
        struct symbol *s;

        if (sc->sorted_array) {
                fprintf(stderr, "add_symbol_name(): Internal error: the "
                    "symbol array is already sorted\n");
                exit(1);
        }

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

        if (name[0] == '\0')
                return;

        /*  TODO: Maybe this should be optional?  */
        if (name[0] == '.' || name[0] == '$')
                return;

        /*  Quick test-hack:  */
        if (n_args < 0) {
                if (strcmp(name, "strlen") == 0)
                        n_args = 1;
                if (strcmp(name, "strcmp") == 0)
                        n_args = 2;
                if (strcmp(name, "strcpy") == 0)
                        n_args = 2;
                if (strcmp(name, "strncpy") == 0)
                        n_args = 3;
                if (strcmp(name, "strlcpy") == 0)
                        n_args = 3;
                if (strcmp(name, "strlcat") == 0)
                        n_args = 3;
                if (strcmp(name, "strncmp") == 0)
                        n_args = 3;
                if (strcmp(name, "memset") == 0)
                        n_args = 3;
                if (strcmp(name, "memcpy") == 0)
                        n_args = 3;
                if (strcmp(name, "bzero") == 0)
                        n_args = 2;
                if (strcmp(name, "bcopy") == 0)
                        n_args = 3;
        }

        if ((addr >> 32) == 0 && (addr & 0x80000000ULL))
                addr |= 0xffffffff00000000ULL;

        s = malloc(sizeof(struct symbol));
        if (s == NULL) {
                fprintf(stderr, "out of memory\n");
                exit(1);
        }

        s->name = strdup(name);
        if (s->name == NULL) {
                fprintf(stderr, "out of memory\n");
                exit(1);
        }
        s->addr   = addr;
        s->len    = len;
        s->type   = type;
        s->n_args = n_args;

        sc->n_symbols ++;

        /*  Add first in list:  */
        s->next = sc->first_symbol;
        sc->first_symbol = s;
}


/*
 *  symbol_readfile():
 *
 *  Read 'nm -S' style symbols from a file.
 *
 *  TODO: This function is an ugly hack, and should be replaced
 *  with something that reads symbols directly from the executable
 *  images.
 */
void symbol_readfile(struct symbol_context *sc, char *fname)
{
        FILE *f;
        char b1[80]; uint64_t addr;
        char b2[80]; uint64_t len;
        char b3[80]; int type;
        char b4[80];
        int cur_n_symbols = sc->n_symbols;

        f = fopen(fname, "r");
        if (f == NULL) {
                perror(fname);
                exit(1);
        }

        while (!feof(f)) {
                memset(b1, 0, sizeof(b1));
                memset(b2, 0, sizeof(b2));
                memset(b3, 0, sizeof(b3));
                memset(b4, 0, sizeof(b4));
                fscanf(f, "%s %s\n", b1,b2);
                if (strlen(b2) < 2 && !(b2[0]>='0' && b2[0]<='9')) {
                        strlcpy(b3, b2, sizeof(b3));
                        strlcpy(b2, "0", sizeof(b2));
                        fscanf(f, "%s\n", b4);
                } else {
                        fscanf(f, "%s %s\n", b3,b4);
                }

                /*  printf("b1='%s' b2='%s' b3='%s' b4='%s'\n",
                    b1,b2,b3,b4);  */
                addr = strtoull(b1, NULL, 16);
                len  = strtoull(b2, NULL, 16);
                type = b3[0];
                /*  printf("addr=%016llx len=%016llx type=%i\n",
                    addr, len, type);  */

                if (type == 't' || type == 'r' || type == 'g')
                        continue;

                add_symbol_name(sc, addr, len, b4, type, -1);
        }

        fclose(f);

        debug("%i symbols\n", sc->n_symbols - cur_n_symbols);
}


/*
 *  sym_addr_compare():
 *
 *  Helper function for sorting symbols according to their address.
 */
int sym_addr_compare(const void *a, const void *b)
{
        struct symbol *p1 = (struct symbol *) a;
        struct symbol *p2 = (struct symbol *) b;

        if (p1->addr < p2->addr)
                return -1;
        if (p1->addr > p2->addr)
                return 1;

        return 0;
}


/*
 *  symbol_recalc_sizes():
 *
 *  Recalculate sizes of symbols that have size = 0, by creating an array
 *  containing all symbols, qsort()-ing that array according to address, and
 *  recalculating the size fields if necessary.
 */
void symbol_recalc_sizes(struct symbol_context *sc)
{
        struct symbol *tmp_array;
        struct symbol *last_ptr;
        struct symbol *tmp_ptr;
        int i;

        tmp_array = malloc(sizeof (struct symbol) * sc->n_symbols);
        if (tmp_array == NULL) {
                fprintf(stderr, "out of memory\n");
                exit(1);
        }

        /*  Copy first_symbol --> tmp_array, and remove the old
                first_symbol at the same time:  */
        tmp_ptr = sc->first_symbol;
        i = 0;
        while (tmp_ptr != NULL) {
                tmp_array[i] = *tmp_ptr;
                last_ptr = tmp_ptr;
                tmp_ptr = tmp_ptr->next;
                free(last_ptr);
                i++;
        }

        qsort(tmp_array, sc->n_symbols, sizeof(struct symbol),
            sym_addr_compare);
        sc->sorted_array = 1;

        /*  Recreate the first_symbol chain:  */
        sc->first_symbol = NULL;
        for (i=0; i<sc->n_symbols; i++) {
                /*  Recalculate size, if 0:  */
                if (tmp_array[i].len == 0) {
                        uint64_t len;
                        if (i != sc->n_symbols-1)
                                len = tmp_array[i+1].addr
                                    - tmp_array[i].addr;
                        else
                                len = 1;
                        tmp_array[i].len = len;
                }

                tmp_array[i].next = &tmp_array[i+1];
        }

        sc->first_symbol = tmp_array;
}


/*
 *  symbol_init():
 *
 *  Initialize the symbol hashtables.
 */
void symbol_init(struct symbol_context *sc)
{
        sc->first_symbol = NULL;
        sc->sorted_array = 0;
        sc->n_symbols = 0;
}

1	dpavlin	2	/*
2			* Copyright (C) 2003-2005 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	18	* $Id: symbol.c,v 1.33 2005/10/26 14:37:02 debug Exp $
29	dpavlin	2	*
30			* Address to symbol translation routines.
31			*
32	dpavlin	18	* This module is (probably) independent from the rest of the emulator.
33			* symbol_init() must be called before any other function in this file is used.
34	dpavlin	2	*/
35
36			#include <stdio.h>
37			#include <stdlib.h>
38			#include <string.h>
39
40			#include "misc.h"
41
42			#include "symbol.h"
43
44
45			#define SYMBOLBUF_MAX 100
46
47
48			/*
49			* symbol_nsymbols():
50			*
51			* Return n_symbols.
52			*/
53			int symbol_nsymbols(struct symbol_context *sc)
54			{
55			return sc->n_symbols;
56			}
57
58
59			/*
60			* get_symbol_addr():
61			*
62			* Find a symbol by name. If addr is non-NULL, *addr is set to the symbol's
63			* address. Return value is 1 if the symbol is found, 0 otherwise.
64			*
65			* NOTE: This is O(n).
66			*/
67			int get_symbol_addr(struct symbol_context sc, char symbol, uint64_t *addr)
68			{
69			struct symbol *s;
70
71			if (sc->sorted_array) {
72			int i;
73			for (i=0; i<sc->n_symbols; i++)
74			if (strcmp(symbol, sc->first_symbol[i].name) == 0) {
75			if (addr != NULL)
76			*addr = sc->first_symbol[i].addr;
77			return 1;
78			}
79			} else {
80			s = sc->first_symbol;
81			while (s != NULL) {
82			if (strcmp(symbol, s->name) == 0) {
83			if (addr != NULL)
84			*addr = s->addr;
85			return 1;
86			}
87			s = s->next;
88			}
89			}
90
91			return 0;
92			}
93
94
95			/*
96	dpavlin	12	* get_symbol_name_and_n_args():
97	dpavlin	2	*
98			* Translate an address into a symbol name. The return value is a pointer
99			* to a static char array, containing the symbol name. (In other words,
100			* this function is not reentrant. This removes the need for memory allocation
101			* at the caller's side.)
102			*
103			* If offset is not a NULL pointer, *offset is set to the offset within
104			* the symbol. For example, if there is a symbol at address 0x1000 with
105			* length 0x100, and a caller wants to know the symbol name of address
106			* 0x1008, the symbol's name will be found in the static char array, and
107			* *offset will be set to 0x8.
108			*
109	dpavlin	12	* If n_argsp is non-NULL, *n_argsp is set to the symbol's n_args value.
110			*
111	dpavlin	2	* If no symbol was found, NULL is returned instead.
112			*/
113			static char symbol_buf[SYMBOLBUF_MAX+1];
114	dpavlin	12	char get_symbol_name_and_n_args(struct symbol_context sc, uint64_t addr,
115			uint64_t offset, int n_argsp)
116	dpavlin	2	{
117			struct symbol *s;
118			int stepsize, ofs;
119
120			if (sc->n_symbols == 0)
121			return NULL;
122
123			if ((addr >> 32) == 0 && (addr & 0x80000000ULL))
124			addr \|= 0xffffffff00000000ULL;
125
126			symbol_buf[0] = symbol_buf[SYMBOLBUF_MAX] = '\0';
127			if (offset != NULL)
128			*offset = 0;
129
130			if (!sc->sorted_array) {
131			/* Slow, linear O(n) search: */
132			s = sc->first_symbol;
133			while (s != NULL) {
134			/* Found a match? */
135			if (addr >= s->addr && addr < s->addr + s->len) {
136			if (addr == s->addr)
137			snprintf(symbol_buf, SYMBOLBUF_MAX,
138			"%s", s->name);
139			else
140			snprintf(symbol_buf, SYMBOLBUF_MAX,
141			"%s+0x%lx", s->name, (long)
142			(addr - s->addr));
143			if (offset != NULL)
144			*offset = addr - s->addr;
145	dpavlin	12	if (n_argsp != NULL)
146			*n_argsp = s->n_args;
147	dpavlin	2	return symbol_buf;
148			}
149			s = s->next;
150			}
151			} else {
152			/* Faster, O(log n) search: */
153			stepsize = sc->n_symbols / 2;
154			ofs = stepsize;
155			while (stepsize > 0 \|\| (stepsize == 0 && ofs == 0)) {
156			s = sc->first_symbol + ofs;
157
158			/* Found a match? */
159			if (addr >= s->addr && addr < s->addr + s->len) {
160			if (addr == s->addr)
161			snprintf(symbol_buf, SYMBOLBUF_MAX,
162			"%s", s->name);
163			else
164			snprintf(symbol_buf, SYMBOLBUF_MAX,
165			"%s+0x%lx", s->name, (long)
166			(addr - s->addr));
167			if (offset != NULL)
168			*offset = addr - s->addr;
169	dpavlin	12	if (n_argsp != NULL)
170			*n_argsp = s->n_args;
171	dpavlin	2	return symbol_buf;
172			}
173
174			if (ofs == 0)
175			break;
176
177			stepsize >>= 1;
178
179			/* Special case for offset 0 (end of search in
180			the Left direction */
181			if (stepsize == 0)
182			ofs = 0;
183			else {
184			if (addr < s->addr)
185			ofs -= stepsize;
186			else
187			ofs += stepsize;
188			}
189			}
190			}
191
192			/* Not found? Then return NULL. */
193			return NULL;
194			}
195
196
197			/*
198	dpavlin	12	* get_symbol_name():
199			*
200			* See get_symbol_name_and_n_args().
201			*/
202			char get_symbol_name(struct symbol_context sc, uint64_t addr, uint64_t *offs)
203			{
204			return get_symbol_name_and_n_args(sc, addr, offs, NULL);
205			}
206
207
208			/*
209	dpavlin	2	* add_symbol_name():
210			*
211			* Add a symbol to the symbol list.
212			*/
213			void add_symbol_name(struct symbol_context *sc,
214	dpavlin	12	uint64_t addr, uint64_t len, char *name, int type, int n_args)
215	dpavlin	2	{
216			struct symbol *s;
217
218			if (sc->sorted_array) {
219			fprintf(stderr, "add_symbol_name(): Internal error: the "
220			"symbol array is already sorted\n");
221			exit(1);
222			}
223
224	dpavlin	4	if (name == NULL) {
225			fprintf(stderr, "add_symbol_name(): name = NULL\n");
226			exit(1);
227			}
228
229	dpavlin	10	if (name[0] == '\0')
230			return;
231
232	dpavlin	4	/* TODO: Maybe this should be optional? */
233	dpavlin	12	if (name[0] == '.' \|\| name[0] == '$')
234	dpavlin	4	return;
235
236	dpavlin	12	/* Quick test-hack: */
237			if (n_args < 0) {
238			if (strcmp(name, "strlen") == 0)
239			n_args = 1;
240			if (strcmp(name, "strcmp") == 0)
241			n_args = 2;
242			if (strcmp(name, "strcpy") == 0)
243			n_args = 2;
244	dpavlin	14	if (strcmp(name, "strncpy") == 0)
245			n_args = 3;
246			if (strcmp(name, "strlcpy") == 0)
247			n_args = 3;
248			if (strcmp(name, "strlcat") == 0)
249			n_args = 3;
250	dpavlin	12	if (strcmp(name, "strncmp") == 0)
251			n_args = 3;
252			if (strcmp(name, "memset") == 0)
253			n_args = 3;
254			if (strcmp(name, "memcpy") == 0)
255			n_args = 3;
256			if (strcmp(name, "bzero") == 0)
257			n_args = 2;
258			if (strcmp(name, "bcopy") == 0)
259			n_args = 3;
260			}
261
262	dpavlin	2	if ((addr >> 32) == 0 && (addr & 0x80000000ULL))
263			addr \|= 0xffffffff00000000ULL;
264
265			s = malloc(sizeof(struct symbol));
266			if (s == NULL) {
267			fprintf(stderr, "out of memory\n");
268			exit(1);
269			}
270
271			s->name = strdup(name);
272			if (s->name == NULL) {
273			fprintf(stderr, "out of memory\n");
274			exit(1);
275			}
276	dpavlin	12	s->addr = addr;
277			s->len = len;
278			s->type = type;
279			s->n_args = n_args;
280	dpavlin	2
281			sc->n_symbols ++;
282
283			/* Add first in list: */
284			s->next = sc->first_symbol;
285			sc->first_symbol = s;
286			}
287
288
289			/*
290			* symbol_readfile():
291			*
292			* Read 'nm -S' style symbols from a file.
293			*
294			* TODO: This function is an ugly hack, and should be replaced
295			* with something that reads symbols directly from the executable
296			* images.
297			*/
298			void symbol_readfile(struct symbol_context sc, char fname)
299			{
300			FILE *f;
301			char b1[80]; uint64_t addr;
302			char b2[80]; uint64_t len;
303			char b3[80]; int type;
304			char b4[80];
305			int cur_n_symbols = sc->n_symbols;
306
307			f = fopen(fname, "r");
308			if (f == NULL) {
309			perror(fname);
310			exit(1);
311			}
312
313			while (!feof(f)) {
314			memset(b1, 0, sizeof(b1));
315			memset(b2, 0, sizeof(b2));
316			memset(b3, 0, sizeof(b3));
317			memset(b4, 0, sizeof(b4));
318			fscanf(f, "%s %s\n", b1,b2);
319			if (strlen(b2) < 2 && !(b2[0]>='0' && b2[0]<='9')) {
320	dpavlin	10	strlcpy(b3, b2, sizeof(b3));
321			strlcpy(b2, "0", sizeof(b2));
322	dpavlin	2	fscanf(f, "%s\n", b4);
323			} else {
324			fscanf(f, "%s %s\n", b3,b4);
325			}
326
327			/* printf("b1='%s' b2='%s' b3='%s' b4='%s'\n",
328			b1,b2,b3,b4); */
329			addr = strtoull(b1, NULL, 16);
330			len = strtoull(b2, NULL, 16);
331			type = b3[0];
332			/* printf("addr=%016llx len=%016llx type=%i\n",
333			addr, len, type); */
334
335			if (type == 't' \|\| type == 'r' \|\| type == 'g')
336			continue;
337
338	dpavlin	12	add_symbol_name(sc, addr, len, b4, type, -1);
339	dpavlin	2	}
340
341			fclose(f);
342
343			debug("%i symbols\n", sc->n_symbols - cur_n_symbols);
344			}
345
346
347			/*
348			* sym_addr_compare():
349			*
350			* Helper function for sorting symbols according to their address.
351			*/
352			int sym_addr_compare(const void a, const void b)
353			{
354			struct symbol p1 = (struct symbol ) a;
355			struct symbol p2 = (struct symbol ) b;
356
357			if (p1->addr < p2->addr)
358			return -1;
359			if (p1->addr > p2->addr)
360			return 1;
361
362			return 0;
363			}
364
365
366			/*
367			* symbol_recalc_sizes():
368			*
369			* Recalculate sizes of symbols that have size = 0, by creating an array
370			* containing all symbols, qsort()-ing that array according to address, and
371			* recalculating the size fields if necessary.
372			*/
373			void symbol_recalc_sizes(struct symbol_context *sc)
374			{
375			struct symbol *tmp_array;
376			struct symbol *last_ptr;
377			struct symbol *tmp_ptr;
378			int i;
379
380			tmp_array = malloc(sizeof (struct symbol) * sc->n_symbols);
381			if (tmp_array == NULL) {
382			fprintf(stderr, "out of memory\n");
383			exit(1);
384			}
385
386			/* Copy first_symbol --> tmp_array, and remove the old
387			first_symbol at the same time: */
388			tmp_ptr = sc->first_symbol;
389			i = 0;
390			while (tmp_ptr != NULL) {
391			tmp_array[i] = *tmp_ptr;
392			last_ptr = tmp_ptr;
393			tmp_ptr = tmp_ptr->next;
394			free(last_ptr);
395			i++;
396			}
397
398			qsort(tmp_array, sc->n_symbols, sizeof(struct symbol),
399			sym_addr_compare);
400			sc->sorted_array = 1;
401
402			/* Recreate the first_symbol chain: */
403			sc->first_symbol = NULL;
404			for (i=0; i<sc->n_symbols; i++) {
405			/* Recalculate size, if 0: */
406			if (tmp_array[i].len == 0) {
407			uint64_t len;
408			if (i != sc->n_symbols-1)
409			len = tmp_array[i+1].addr
410			- tmp_array[i].addr;
411			else
412			len = 1;
413			tmp_array[i].len = len;
414			}
415
416			tmp_array[i].next = &tmp_array[i+1];
417			}
418
419			sc->first_symbol = tmp_array;
420			}
421
422
423			/*
424			* symbol_init():
425			*
426			* Initialize the symbol hashtables.
427			*/
428			void symbol_init(struct symbol_context *sc)
429			{
430			sc->first_symbol = NULL;
431			sc->sorted_array = 0;
432			sc->n_symbols = 0;
433			}
434