1 /* nasmlib.h header file for nasmlib.c
3 * The Netwide Assembler is copyright (C) 1996 Simon Tatham and
4 * Julian Hall. All rights reserved. The software is
5 * redistributable under the licence given in the file "Licence"
6 * distributed in the NASM archive.
10 #define NASM_NASMLIB_H
13 * If this is defined, the wrappers around malloc et al will
14 * transform into logging variants, which will cause NASM to create
15 * a file called `malloc.log' when run, and spew details of all its
16 * memory management into that. That can then be analysed to detect
17 * memory leaks and potentially other problems too.
19 /* #define LOGALLOC */
22 * Wrappers around malloc, realloc and free. nasm_malloc will
23 * fatal-error and die rather than return NULL; nasm_realloc will
24 * do likewise, and will also guarantee to work right on being
25 * passed a NULL pointer; nasm_free will do nothing if it is passed
28 #ifdef NASM_NASM_H /* need efunc defined for this */
29 void nasm_set_malloc_error (efunc);
31 void *nasm_malloc (size_t);
32 void *nasm_realloc (void *, size_t);
33 void nasm_free (void *);
34 char *nasm_strdup (char *);
35 char *nasm_strndup (char *, size_t);
37 void *nasm_malloc_log (char *, int, size_t);
38 void *nasm_realloc_log (char *, int, void *, size_t);
39 void nasm_free_log (char *, int, void *);
40 char *nasm_strdup_log (char *, int, char *);
41 char *nasm_strndup_log (char *, int, char *, size_t);
42 #define nasm_malloc(x) nasm_malloc_log(__FILE__,__LINE__,x)
43 #define nasm_realloc(x,y) nasm_realloc_log(__FILE__,__LINE__,x,y)
44 #define nasm_free(x) nasm_free_log(__FILE__,__LINE__,x)
45 #define nasm_strdup(x) nasm_strdup_log(__FILE__,__LINE__,x)
46 #define nasm_strndup(x,y) nasm_strndup_log(__FILE__,__LINE__,x,y)
51 * ANSI doesn't guarantee the presence of `stricmp' or
54 #if defined(stricmp) || defined(strcasecmp)
56 #define nasm_stricmp stricmp
58 #define nasm_stricmp strcasecmp
61 int nasm_stricmp (const char *, const char *);
64 #if defined(strnicmp) || defined(strncasecmp)
66 #define nasm_strnicmp strnicmp
68 #define nasm_strnicmp strncasecmp
71 int nasm_strnicmp (const char *, const char *, int);
75 * Convert a string into a number, using NASM number rules. Sets
76 * `*error' to TRUE if an error occurs, and FALSE otherwise.
78 long readnum(char *str, int *error);
81 * Convert a character constant into a number. Sets
82 * `*warn' to TRUE if an overflow occurs, and FALSE otherwise.
83 * str points to and length covers the middle of the string,
86 long readstrnum(char *str, int length, int *warn);
89 * seg_init: Initialise the segment-number allocator.
90 * seg_alloc: allocate a hitherto unused segment number.
96 * many output formats will be able to make use of this: a standard
97 * function to add an extension to the name of the input file
100 void standard_extension (char *inname, char *outname, char *extension,
105 * some handy macros that will probably be of use in more than one
106 * output format: convert integers into little-endian byte packed
110 #define WRITELONG(p,v) \
112 *(p)++ = (v) & 0xFF; \
113 *(p)++ = ((v) >> 8) & 0xFF; \
114 *(p)++ = ((v) >> 16) & 0xFF; \
115 *(p)++ = ((v) >> 24) & 0xFF; \
118 #define WRITESHORT(p,v) \
120 *(p)++ = (v) & 0xFF; \
121 *(p)++ = ((v) >> 8) & 0xFF; \
125 * and routines to do the same thing to a file
127 void fwriteshort (int data, FILE *fp);
128 void fwritelong (long data, FILE *fp);
131 * Routines to manage a dynamic random access array of longs which
132 * may grow in size to be more than the largest single malloc'able
136 #define RAA_BLKSIZE 4096 /* this many longs allocated at once */
137 #define RAA_LAYERSIZE 1024 /* this many _pointers_ allocated */
139 typedef struct RAA RAA;
140 typedef union RAA_UNION RAA_UNION;
141 typedef struct RAA_LEAF RAA_LEAF;
142 typedef struct RAA_BRANCH RAA_BRANCH;
146 * Number of layers below this one to get to the real data. 0
147 * means this structure is a leaf, holding RAA_BLKSIZE real
148 * data items; 1 and above mean it's a branch, holding
149 * RAA_LAYERSIZE pointers to the next level branch or leaf
154 * Number of real data items spanned by one position in the
155 * `data' array at this level. This number is 1, trivially, for
156 * a leaf (level 0): for a level 1 branch it should be
157 * RAA_BLKSIZE, and for a level 2 branch it's
158 * RAA_LAYERSIZE*RAA_BLKSIZE.
163 long data[RAA_BLKSIZE];
166 struct RAA *data[RAA_LAYERSIZE];
172 struct RAA *raa_init (void);
173 void raa_free (struct RAA *);
174 long raa_read (struct RAA *, long);
175 struct RAA *raa_write (struct RAA *r, long posn, long value);
178 * Routines to manage a dynamic sequential-access array, under the
179 * same restriction on maximum mallocable block. This array may be
180 * written to in two ways: a contiguous chunk can be reserved of a
181 * given size, and a pointer returned, or single-byte data may be
182 * written. The array can also be read back in the same two ways:
183 * as a series of big byte-data blocks or as a list of structures
189 * members `end' and `elem_len' are only valid in first link in
190 * list; `rptr' and `rpos' are used for reading
192 struct SAA *next, *end, *rptr;
193 long elem_len, length, posn, start, rpos;
197 struct SAA *saa_init (long elem_len); /* 1 == byte */
198 void saa_free (struct SAA *);
199 void *saa_wstruct (struct SAA *); /* return a structure of elem_len */
200 void saa_wbytes (struct SAA *, void *, long); /* write arbitrary bytes */
201 void saa_rewind (struct SAA *); /* for reading from beginning */
202 void *saa_rstruct (struct SAA *); /* return NULL on EOA */
203 void *saa_rbytes (struct SAA *, long *); /* return 0 on EOA */
204 void saa_rnbytes (struct SAA *, void *, long); /* read a given no. of bytes */
205 void saa_fread (struct SAA *s, long posn, void *p, long len); /* fixup */
206 void saa_fwrite (struct SAA *s, long posn, void *p, long len); /* fixup */
207 void saa_fpwrite (struct SAA *, FILE *);
213 extern char *stdscan_bufptr;
214 void stdscan_reset(void);
215 int stdscan (void *private_data, struct tokenval *tv);
220 * Library routines to manipulate expression data types.
222 int is_reloc(expr *);
223 int is_simple(expr *);
224 int is_really_simple (expr *);
225 int is_unknown(expr *);
226 int is_just_unknown(expr *);
227 long reloc_value(expr *);
228 long reloc_seg(expr *);
229 long reloc_wrt(expr *);
233 * Binary search routine. Returns index into `array' of an entry
234 * matching `string', or <0 if no match. `array' is taken to
235 * contain `size' elements.
237 int bsi (char *string, char **array, int size);
240 char *src_set_fname(char *newname);
241 long src_set_linnum(long newline);
242 long src_get_linnum(void);
244 * src_get may be used if you simply want to know the source file and line.
245 * It is also used if you maintain private status about the source location
246 * It return 0 if the information was the same as the last time you
247 * checked, -1 if the name changed and (new-old) if just the line changed.
249 int src_get(long *xline, char **xname);
251 void nasm_quote(char **str);
252 char *nasm_strcat(char *one, char *two);
253 void nasmlib_cleanup(void);
255 void null_debug_routine();
256 extern struct dfmt null_debug_form;
257 extern struct dfmt *null_debug_arr[2];