1 /* gasp.c - Gnu assembler preprocessor main program.
2 Copyright (C) 1994 Free Software Foundation, Inc.
4 Written by Steve and Judy Chamberlain of Cygnus Support,
7 This file is part of GASP, the GNU Assembler Preprocessor.
9 GASP is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2, or (at your option)
14 GASP is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with GASP; see the file COPYING. If not, write to
21 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
25 This program translates the input macros and stuff into a form
26 suitable for gas to consume.
29 gasp [-sdhau] [-c char] [-o <outfile>] <infile>*
31 -s copy source to output
32 -c <char> comments are started with <char> instead of !
33 -u allow unreasonable stuff
35 -d print debugging stats
36 -s semi colons start comments
37 -a use alternate syntax
38 Pseudo ops can start with or without a .
39 Labels have to be in first column.
40 Macro arg parameters subsituted by name, don't need the &.
41 String can start with ' too.
42 Strings can be surrounded by <..>
43 A %<exp> in a string evaluates the expression
44 Literal char in a string with !
55 #include "libiberty.h"
57 char *program_version = "1.2";
59 #define MAX_INCLUDES 30 /* Maximum include depth */
60 #define MAX_REASONABLE 1000 /* Maximum number of expansions */
62 int unreasonable; /* -u on command line */
63 int stats; /* -d on command line */
64 int print_line_number; /* -p flag on command line */
65 int copysource; /* -c flag on command line */
66 int warnings; /* Number of WARNINGs generated so far. */
67 int errors; /* Number of ERRORs generated so far. */
68 int fatals; /* Number of fatal ERRORs generated so far (either 0 or 1). */
69 int alternate = 0; /* -a on command line */
70 char comment_char = '!';
71 int radix = 10; /* Default radix */
73 int had_end; /* Seen .END */
75 /* The output stream */
79 /* Forward declarations. */
80 static int condass_lookup_name();
81 static int condass_on();
83 static int get_and_process();
84 static int get_token();
85 static int getstring();
86 static int include_next_index();
87 static int macro_op();
88 static int linecount();
89 static int process_pseudo_op();
90 static void include_pop();
91 static void include_print_where_line();
94 I had a couple of choices when deciding upon this data structure.
95 gas uses null terminated strings for all its internal work. This
96 often means that parts of the program that want to examine
97 substrings have to manipulate the data in the string to do the
98 right thing (a common operation is to single out a bit of text by
99 saving away the character after it, nulling it out, operating on
100 the substring and then replacing the character which was under the
101 null). This is a pain and I remember a load of problems that I had with
102 code in gas which almost got this right. Also, it's harder to grow and
103 allocate null terminated strings efficiently.
105 Obstacks provide all the functionality needed, but are too
106 complicated, hence the sb.
108 An sb is allocated by the caller, and is initialzed to point to an
109 sb_element. sb_elements are kept on a free lists, and used when
110 needed, replaced onto the free list when unused.
113 #define max_power_two 30 /* don't allow strings more than
114 2^max_power_two long */
115 /* structure of an sb */
118 char *ptr; /* points to the current block. */
119 int len; /* how much is used. */
120 int pot; /* the maximum length is 1<<pot */
125 /* Structure of the free list object of an sb */
137 sb_element *size[max_power_two];
140 sb_list_vector free_list;
142 int string_count[max_power_two];
144 /* the attributes of each character are stored as a bit pattern
145 chartype, which gives us quick tests. */
152 #define COMMENTBIT 16
154 #define ISCOMMENTCHAR(x) (chartype[(unsigned)(x)] & COMMENTBIT)
155 #define ISFIRSTCHAR(x) (chartype[(unsigned)(x)] & FIRSTBIT)
156 #define ISNEXTCHAR(x) (chartype[(unsigned)(x)] & NEXTBIT)
157 #define ISSEP(x) (chartype[(unsigned)(x)] & SEPBIT)
158 #define ISWHITE(x) (chartype[(unsigned)(x)] & WHITEBIT)
160 static char chartype[256];
163 /* Conditional assembly uses the `ifstack'. Each aif pushes another
164 entry onto the stack, and sets the on flag if it should. The aelse
165 sets hadelse, and toggles on. An aend pops a level. We limit to
166 100 levels of nesting, not because we're facists pigs with read
167 only minds, but because more than 100 levels of nesting is probably
168 a bug in the user's macro structure. */
170 #define IFNESTING 100
173 int on; /* is the level being output */
174 int hadelse; /* has an aelse been seen */
179 /* The final and intermediate results of expression evaluation are kept in
180 exp_t's. Note that a symbol is not an sb, but a pointer into the input
181 line. It must be coped somewhere safe before the next line is read in. */
192 int value; /* constant part */
193 symbol add_symbol; /* name part */
194 symbol sub_symbol; /* name part */
199 /* Hashing is done in a pretty standard way. A hash_table has a
200 pointer to a vector of pointers to hash_entrys, and the size of the
201 vector. A hash_entry contains a union of all the info we like to
202 store in hash table. If there is a hash collision, hash_entries
203 with the same hash are kept in a chain. */
205 /* What the data in a hash_entry means */
208 hash_integer, /* name->integer mapping */
209 hash_string, /* name->string mapping */
210 hash_macro, /* name is a macro */
211 hash_formal /* name is a formal argument */
216 sb key; /* symbol name */
217 hash_type type; /* symbol meaning */
222 struct macro_struct *m;
223 struct formal_struct *f;
225 struct hs *next; /* next hash_entry with same hash key */
235 /* Structures used to store macros.
237 Each macro knows its name and included text. It gets built with a
238 list of formal arguments, and also keeps a hash table which points
239 into the list to speed up formal search. Each formal knows its
240 name and its default value. Each time the macro is expanded, the
241 formals get the actual values attatched to them. */
243 /* describe the formal arguments to a macro */
245 typedef struct formal_struct
247 struct formal_struct *next; /* next formal in list */
248 sb name; /* name of the formal */
249 sb def; /* the default value */
250 sb actual; /* the actual argument (changed on each expansion) */
251 int index; /* the index of the formal 0..formal_count-1 */
255 /* describe the macro. */
257 typedef struct macro_struct
259 sb sub; /* substitution text. */
260 int formal_count; /* number of formal args. */
261 formal_entry *formals; /* pointer to list of formal_structs */
262 hash_table formal_hash; /* hash table of formals. */
266 /* how we nest files and expand macros etc.
268 we keep a stack of of include_stack structs. each include file
269 pushes a new level onto the stack. we keep an sb with a pushback
270 too. unget chars are pushed onto the pushback sb, getchars first
271 checks the pushback sb before reading from the input stream.
273 small things are expanded by adding the text of the item onto the
274 pushback sb. larger items are grown by pushing a new level and
275 allocating the entire pushback buf for the item. each time
276 something like a macro is expanded, the stack index is changed. we
277 can then perform an exitm by popping all entries off the stack with
278 the same stack index. if we're being reasonable, we can detect
279 recusive expansion by checking the index is reasonably small.
284 include_file, include_repeat, include_while, include_macro
289 sb pushback; /* current pushback stream */
290 int pushback_index; /* next char to read from stream */
291 FILE *handle; /* open file */
292 sb name; /* name of file */
293 int linecount; /* number of lines read so far */
295 int index; /* index of this layer */
297 include_stack[MAX_INCLUDES];
299 struct include_stack *sp;
300 #define isp (sp - include_stack)
305 void include_print_where_line ();
309 do { include_print_where_line (stderr); fprintf x ; fatals++; quit(); } while(0)
311 do { include_print_where_line (stderr); fprintf x; errors++; } while(0)
313 do { include_print_where_line (stderr); fprintf x; warnings++;} while(0)
317 /* exit the program and return the right ERROR code. */
330 for (i = 0; i < max_power_two; i++)
332 fprintf (stderr, "strings size %8d : %d\n", 1<<i, string_count[i]);
339 /* this program is about manipulating strings.
340 they are managed in things called `sb's which is an abbreviation
341 for string buffers. an sb has to be created, things can be glued
342 on to it, and at the end of it's life it should be freed. the
343 contents should never be pointed at whilst it is still growing,
344 since it could be moved at any time
348 sb_grow... (&foo,...);
354 /* initializes an sb. */
361 /* see if we can find one to allocate */
364 if (size > max_power_two)
366 FATAL ((stderr, "string longer than %d bytes requested.\n",
367 1 << max_power_two));
369 e = free_list.size[size];
372 /* nothing there, allocate one and stick into the free list */
373 e = (sb_element *) xmalloc (sizeof (sb_element) + (1 << size));
374 e->next = free_list.size[size];
376 free_list.size[size] = e;
377 string_count[size]++;
380 /* remove from free list */
382 free_list.size[size] = e->next;
384 /* copy into callers world */
396 sb_build (ptr, dsize);
399 /* deallocate the sb at ptr */
406 /* return item to free list */
407 ptr->item->next = free_list.size[ptr->pot];
408 free_list.size[ptr->pot] = ptr->item;
411 /* add the sb at s to the end of the sb at ptr */
413 static void sb_check ();
421 sb_check (ptr, s->len);
422 memcpy (ptr->ptr + ptr->len, s->ptr, s->len);
426 /* make sure that the sb at ptr has room for another len characters,
427 and grow it if it doesn't. */
434 if (ptr->len + len >= 1 << ptr->pot)
438 while (ptr->len + len >= 1 << pot)
440 sb_build (&tmp, pot);
441 sb_add_sb (&tmp, ptr);
447 /* make the sb at ptr point back to the beginning. */
456 /* add character c to the end of the sb at ptr. */
464 ptr->ptr[ptr->len++] = c;
467 /* add null terminated string s to the end of sb at ptr. */
470 sb_add_string (ptr, s)
474 int len = strlen (s);
476 memcpy (ptr->ptr + ptr->len, s, len);
480 /* add string at s of length len to sb at ptr */
483 sb_add_buffer (ptr, s, len)
489 memcpy (ptr->ptr + ptr->len, s, len);
494 /* print the sb at ptr to the output file */
504 for (i = 0; i < ptr->len; i++)
508 fprintf (outfile, ",");
510 fprintf (outfile, "%d", ptr->ptr[i]);
517 sb_print_at (idx, ptr)
522 for (i = idx; i < ptr->len; i++)
523 putc (ptr->ptr[i], outfile);
525 /* put a null at the end of the sb at in and return the start of the
526 string, so that it can be used as an arg to printf %s. */
533 /* stick a null on the end of the string */
538 /* start at the index idx into the string in sb at ptr and skip
539 whitespace. return the index of the first non whitespace character */
542 sb_skip_white (idx, ptr)
546 while (idx < ptr->len && ISWHITE (ptr->ptr[idx]))
551 /* start at the index idx into the sb at ptr. skips whitespace,
552 a comma and any following whitespace. returnes the index of the
556 sb_skip_comma (idx, ptr)
560 while (idx < ptr->len && ISWHITE (ptr->ptr[idx]))
564 && ptr->ptr[idx] == ',')
567 while (idx < ptr->len && ISWHITE (ptr->ptr[idx]))
574 /* hash table maintenance. */
576 /* build a new hash table with size buckets, and fill in the info at ptr. */
579 hash_new_table (size, ptr)
585 ptr->table = (hash_entry **) xmalloc (size * (sizeof (hash_entry *)));
586 /* Fill with null-pointer, not zero-bit-pattern. */
587 for (i = 0; i < size; i++)
591 /* calculate and return the hash value of the sb at key. */
600 for (i = 0; i < key->len; i++)
608 /* lookup key in hash_table tab, if present, then return it, otherwise
609 build a new one and fill it with hash_integer. */
613 hash_create (tab, key)
617 int k = hash (key) % tab->size;
619 hash_entry **table = tab->table;
627 hash_entry *n = (hash_entry *) xmalloc (sizeof (hash_entry));
630 sb_add_sb (&n->key, key);
632 n->type = hash_integer;
635 if (strncmp (table[k]->key.ptr, key->ptr, key->len) == 0)
643 /* add sb name with key into hash_table tab. if replacing old value
644 and again, then ERROR. */
648 hash_add_to_string_table (tab, key, name, again)
654 hash_entry *ptr = hash_create (tab, key);
655 if (ptr->type == hash_integer)
657 sb_new (&ptr->value.s);
659 if (ptr->value.s.len)
662 ERROR ((stderr, "redefintion not allowed"));
665 ptr->type = hash_string;
666 sb_reset (&ptr->value.s);
668 sb_add_sb (&ptr->value.s, name);
671 /* add integer name to hash_table tab with sb key. */
675 hash_add_to_int_table (tab, key, name)
680 hash_entry *ptr = hash_create (tab, key);
684 /* lookup sb key in hash_table tab. if found return hash_entry result,
689 hash_lookup (tab, key)
693 int k = hash (key) % tab->size;
694 hash_entry **table = tab->table;
695 hash_entry *p = table[k];
698 if (p->key.len == key->len
699 && strncmp (p->key.ptr, key->ptr, key->len) == 0)
709 are handled in a really simple recursive decent way. each bit of
710 the machine takes an index into an sb and a pointer to an exp_t,
711 modifies the *exp_t and returns the index of the first character
712 past the part of the expression parsed.
714 expression precedence:
725 /* make sure that the exp_t at term is constant, if not the give the op ERROR. */
729 checkconst (op, term)
733 if (term->add_symbol.len
734 || term->sub_symbol.len)
736 ERROR ((stderr, "the %c operator cannot take non-absolute arguments.\n", op));
740 /* turn the number in string at idx into a number of base,
741 fill in ptr and return the index of the first character not in the
746 sb_strtol (idx, string, base, ptr)
753 idx = sb_skip_white (idx, string);
755 while (idx < string->len)
757 int ch = string->ptr[idx];
761 else if (ch >= 'a' && ch <= 'f')
763 else if (ch >= 'A' && ch <= 'F')
771 value = value * base + dig;
778 static int level_5 ();
781 level_0 (idx, string, lhs)
786 lhs->add_symbol.len = 0;
787 lhs->add_symbol.name = 0;
789 lhs->sub_symbol.len = 0;
790 lhs->sub_symbol.name = 0;
792 idx = sb_skip_white (idx, string);
796 if (isdigit (string->ptr[idx]))
798 idx = sb_strtol (idx, string, 10, &lhs->value);
800 else if (ISFIRSTCHAR (string->ptr[idx]))
803 lhs->add_symbol.name = string->ptr + idx;
804 while (idx < string->len && ISNEXTCHAR (string->ptr[idx]))
809 lhs->add_symbol.len = len;
811 else if (string->ptr[idx] == '"')
815 ERROR ((stderr, "string where expression expected.\n"));
816 idx = getstring (idx, string, &acc);
821 ERROR ((stderr, "can't find primary in expression.\n"));
824 return sb_skip_white (idx, string);
830 level_1 (idx, string, lhs)
835 idx = sb_skip_white (idx, string);
837 switch (string->ptr[idx])
840 idx = level_1 (idx + 1, string, lhs);
843 idx = level_1 (idx + 1, string, lhs);
844 checkconst ('~', lhs);
845 lhs->value = ~lhs->value;
850 idx = level_1 (idx + 1, string, lhs);
851 lhs->value = -lhs->value;
853 lhs->add_symbol = lhs->sub_symbol;
859 idx = level_5 (sb_skip_white (idx, string), string, lhs);
860 if (string->ptr[idx] != ')')
861 ERROR ((stderr, "misplaced closing parens.\n"));
866 idx = level_0 (idx, string, lhs);
869 return sb_skip_white (idx, string);
873 level_2 (idx, string, lhs)
880 idx = level_1 (idx, string, lhs);
882 while (idx < string->len && (string->ptr[idx] == '*'
883 || string->ptr[idx] == '/'))
885 char op = string->ptr[idx++];
886 idx = level_1 (idx, string, &rhs);
890 checkconst ('*', lhs);
891 checkconst ('*', &rhs);
892 lhs->value *= rhs.value;
895 checkconst ('/', lhs);
896 checkconst ('/', &rhs);
898 ERROR ((stderr, "attempt to divide by zero.\n"));
900 lhs->value /= rhs.value;
904 return sb_skip_white (idx, string);
909 level_3 (idx, string, lhs)
916 idx = level_2 (idx, string, lhs);
918 while (idx < string->len
919 && (string->ptr[idx] == '+'
920 || string->ptr[idx] == '-'))
922 char op = string->ptr[idx++];
923 idx = level_2 (idx, string, &rhs);
927 lhs->value += rhs.value;
928 if (lhs->add_symbol.name && rhs.add_symbol.name)
930 ERROR ((stderr, "can't add two relocatable expressions\n"));
932 /* change nn+symbol to symbol + nn */
933 if (rhs.add_symbol.name)
935 lhs->add_symbol = rhs.add_symbol;
939 lhs->value -= rhs.value;
940 lhs->sub_symbol = rhs.add_symbol;
944 return sb_skip_white (idx, string);
948 level_4 (idx, string, lhs)
955 idx = level_3 (idx, string, lhs);
957 while (idx < string->len &&
958 string->ptr[idx] == '&')
960 char op = string->ptr[idx++];
961 idx = level_3 (idx, string, &rhs);
965 checkconst ('&', lhs);
966 checkconst ('&', &rhs);
967 lhs->value &= rhs.value;
971 return sb_skip_white (idx, string);
975 level_5 (idx, string, lhs)
982 idx = level_4 (idx, string, lhs);
984 while (idx < string->len
985 && (string->ptr[idx] == '|' || string->ptr[idx] == '~'))
987 char op = string->ptr[idx++];
988 idx = level_4 (idx, string, &rhs);
992 checkconst ('|', lhs);
993 checkconst ('|', &rhs);
994 lhs->value |= rhs.value;
997 checkconst ('~', lhs);
998 checkconst ('~', &rhs);
999 lhs->value ^= rhs.value;
1003 return sb_skip_white (idx, string);
1007 /* parse the expression at offset idx into string, fill up res with
1008 the result. return the index of the first char past the expression.
1012 exp_parse (idx, string, res)
1017 return level_5 (sb_skip_white (idx, string), string, res);
1021 /* turn the expression at exp into text and glue it onto the end of
1025 exp_string (exp, string)
1033 if (exp->add_symbol.len)
1035 sb_add_buffer (string, exp->add_symbol.name, exp->add_symbol.len);
1043 sb_add_char (string, '+');
1044 sprintf (buf, "%d", exp->value);
1045 sb_add_string (string, buf);
1049 if (exp->sub_symbol.len)
1051 sb_add_char (string, '-');
1052 sb_add_buffer (string, exp->add_symbol.name, exp->add_symbol.len);
1058 sb_add_char (string, '0');
1062 /* parse the expression at offset idx into sb in, return the value in val.
1063 if the expression is not constant, give ERROR emsg. returns the index
1064 of the first character past the end of the expression. */
1067 exp_get_abs (emsg, idx, in, val)
1074 idx = exp_parse (idx, in, &res);
1075 if (res.add_symbol.len || res.sub_symbol.len)
1076 ERROR ((stderr, emsg));
1082 sb label; /* current label parsed from line */
1083 hash_table assign_hash_table; /* hash table for all assigned variables */
1084 hash_table keyword_hash_table; /* hash table for keyword */
1085 hash_table vars; /* hash table for eq variables */
1087 #define in_comment ';'
1091 strip_comments (out)
1096 for (i = 0; i < out->len; i++)
1098 if (ISCOMMENTCHAR(s[i]))
1107 /* push back character ch so that it can be read again. */
1117 if (sp->pushback_index)
1118 sp->pushback_index--;
1120 sb_add_char (&sp->pushback, ch);
1123 /* push the sb ptr onto the include stack, with the given name, type and index. */
1127 include_buf (name, ptr, type, index)
1134 if (sp - include_stack >= MAX_INCLUDES)
1135 FATAL ((stderr, "unreasonable nesting.\n"));
1137 sb_add_sb (&sp->name, name);
1140 sp->pushback_index = 0;
1143 sb_new (&sp->pushback);
1144 sb_add_sb (&sp->pushback, ptr);
1148 /* used in ERROR messages, print info on where the include stack is onto file. */
1151 include_print_where_line (file)
1154 struct include_stack *p = include_stack + 1;
1158 fprintf (file, "%s:%d ", sb_name (&p->name), p->linecount - ((p == sp) ? 1 : 0));
1163 /* used in listings, print the line number onto file. */
1165 include_print_line (file)
1169 struct include_stack *p = include_stack + 1;
1171 n = fprintf (file, "%4d", p->linecount);
1175 n += fprintf (file, ".%d", p->linecount);
1180 fprintf (file, " ");
1186 /* read a line from the top of the include stack into sb in. */
1197 putc (comment_char, outfile);
1198 if (print_line_number)
1199 include_print_line (outfile);
1213 WARNING ((stderr, "End of file not at start of line.\n"));
1215 putc ('\n', outfile);
1234 /* continued line */
1237 putc (comment_char, outfile);
1238 putc ('+', outfile);
1251 sb_add_char (in, ch);
1259 /* find a label from sb in and put it in out. */
1262 grab_label (in, out)
1268 if (ISFIRSTCHAR (in->ptr[i]))
1270 sb_add_char (out, in->ptr[i]);
1272 while ((ISNEXTCHAR (in->ptr[i])
1273 || in->ptr[i] == '\\'
1274 || in->ptr[i] == '&')
1277 sb_add_char (out, in->ptr[i]);
1284 /* find all strange base stuff and turn into decimal. also
1285 find all the other numbers and convert them from the default radix */
1288 change_base (idx, in, out)
1295 while (idx < in->len)
1297 if (idx < in->len - 1 && in->ptr[idx + 1] == '\'')
1301 switch (in->ptr[idx])
1320 ERROR ((stderr, "Illegal base character %c.\n", in->ptr[idx]));
1325 idx = sb_strtol (idx + 2, in, base, &value);
1326 sprintf (buffer, "%d", value);
1327 sb_add_string (out, buffer);
1329 else if (ISFIRSTCHAR (in->ptr[idx]))
1331 /* copy entire names through quickly */
1332 sb_add_char (out, in->ptr[idx]);
1334 while (idx < in->len && ISNEXTCHAR (in->ptr[idx]))
1336 sb_add_char (out, in->ptr[idx]);
1340 else if (isdigit (in->ptr[idx]))
1343 /* all numbers must start with a digit, let's chew it and
1345 idx = sb_strtol (idx, in, radix, &value);
1346 sprintf (buffer, "%d", value);
1347 sb_add_string (out, buffer);
1349 /* skip all undigsested letters */
1350 while (idx < in->len && ISNEXTCHAR (in->ptr[idx]))
1352 sb_add_char (out, in->ptr[idx]);
1358 /* nothing special, just pass it through */
1359 sb_add_char (out, in->ptr[idx]);
1376 do_assign (again, idx, in)
1381 /* stick label in symbol table with following value */
1386 idx = exp_parse (idx, in, &e);
1387 exp_string (&e, &acc);
1388 hash_add_to_string_table (&assign_hash_table, &label, &acc, again);
1393 /* .radix [b|q|d|h] */
1400 int idx = sb_skip_white (0, ptr);
1401 switch (ptr->ptr[idx])
1420 ERROR ((stderr, "radix is %c must be one of b, q, d or h", radix));
1425 /* Parse off a .b, .w or .l */
1428 get_opsize (idx, in, size)
1434 if (in->ptr[idx] == '.')
1438 switch (in->ptr[idx])
1456 ERROR ((stderr, "size must be one of b, w or l, is %c.\n", in->ptr[idx]));
1469 idx = sb_skip_white (idx, line);
1471 && ISCOMMENTCHAR(line->ptr[idx]))
1473 if (idx >= line->len)
1478 /* .data [.b|.w|.l] <data>*
1479 or d[bwl] <data>* */
1482 do_data (idx, in, size)
1494 idx = get_opsize (idx, in, &opsize);
1513 fprintf (outfile, "%s\t", opname);
1515 idx = sb_skip_white (idx, in);
1519 && in->ptr[idx] == '"')
1522 idx = getstring (idx, in, &acc);
1523 for (i = 0; i < acc.len; i++)
1526 fprintf(outfile,",");
1527 fprintf (outfile, "%d", acc.ptr[i]);
1532 while (!eol (idx, in))
1535 idx = exp_parse (idx, in, &e);
1536 exp_string (&e, &acc);
1537 sb_add_char (&acc, 0);
1538 fprintf (outfile, acc.ptr);
1539 if (idx < in->len && in->ptr[idx] == ',')
1541 fprintf (outfile, ",");
1547 sb_print_at (idx, in);
1548 fprintf (outfile, "\n");
1551 /* .datab [.b|.w|.l] <repeat>,<fill> */
1562 idx = get_opsize (idx, in, &opsize);
1564 idx = exp_get_abs ("datab repeat must be constant.\n", idx, in, &repeat);
1565 idx = sb_skip_comma (idx, in);
1566 idx = exp_get_abs ("datab data must be absolute.\n", idx, in, &fill);
1568 fprintf (outfile, ".fill\t%d,%d,%d\n", repeat, opsize, fill);
1579 idx = exp_get_abs ("align needs absolute expression.\n", idx, in, &al);
1584 WARNING ((stderr, "alignment must be one of 1, 2 or 4.\n"));
1586 fprintf (outfile, ".align %d\n", al);
1589 /* .res[.b|.w|.l] <size> */
1592 do_res (idx, in, type)
1600 idx = get_opsize (idx, in, &size);
1601 while (!eol(idx, in))
1603 idx = sb_skip_white (idx, in);
1604 if (in->ptr[idx] == ',')
1606 idx = exp_get_abs ("res needs absolute expression for fill count.\n", idx, in, &count);
1608 if (type == 'c' || type == 'z')
1611 fprintf (outfile, ".space %d\n", count * size);
1622 fprintf (outfile, ".global %s\n", sb_name (in));
1625 /* .print [list] [nolist] */
1632 idx = sb_skip_white (idx, in);
1633 while (idx < in->len)
1635 if (strncmp (in->ptr + idx, "LIST", 4) == 0)
1637 fprintf (outfile, ".list\n");
1640 else if (strncmp (in->ptr + idx, "NOLIST", 6) == 0)
1642 fprintf (outfile, ".nolist\n");
1651 do_heading (idx, in)
1657 idx = getstring (idx, in, &head);
1658 fprintf (outfile, ".title \"%s\"\n", sb_name (&head));
1667 fprintf (outfile, ".eject\n");
1670 /* .form [lin=<value>] [col=<value>] */
1678 idx = sb_skip_white (idx, in);
1680 while (idx < in->len)
1683 if (strncmp (in->ptr + idx, "LIN=", 4) == 0)
1686 idx = exp_get_abs ("form LIN= needs absolute expresssion.\n", idx, in, &lines);
1689 if (strncmp (in->ptr + idx, "COL=", 4) == 0)
1692 idx = exp_get_abs ("form COL= needs absolute expresssion.\n", idx, in, &columns);
1697 fprintf (outfile, ".psize %d,%d\n", lines, columns);
1702 get_any_string (idx, in, out)
1708 idx = sb_skip_white (idx, in);
1713 if (in->ptr[idx] == '%'
1718 /* Turns the next expression into a string */
1719 idx = exp_get_abs ("% operator needs absolute expression",
1723 sprintf(buf, "\"%d\"", val);
1724 sb_add_string (out, buf);
1726 else if (in->ptr[idx] == '"'
1727 || in->ptr[idx] == '<'
1728 || (alternate && in->ptr[idx] == '\''))
1732 /* Keep the quotes */
1733 sb_add_char (out, '\"');
1734 idx = getstring (idx, in, out);
1735 sb_add_char (out, '\"');
1739 idx = getstring (idx, in, out);
1744 while (idx < in->len
1745 && (in->ptr[idx] == '"'
1746 || in->ptr[idx] == '\''
1747 || !ISSEP (in->ptr[idx])))
1749 if (in->ptr[idx] == '"'
1750 || in->ptr[idx] == '\'')
1752 char tchar = in->ptr[idx];
1753 sb_add_char (out, in->ptr[idx++]);
1754 while (idx < in->len
1755 && in->ptr[idx] != tchar)
1756 sb_add_char (out, in->ptr[idx++]);
1758 sb_add_char (out, in->ptr[idx++]);
1767 /* skip along sb in starting at idx, suck off whitespace a ( and more
1768 whitespace. return the idx of the next char */
1771 skip_openp (idx, in)
1775 idx = sb_skip_white (idx, in);
1776 if (in->ptr[idx] != '(')
1777 ERROR ((stderr, "misplaced ( .\n"));
1778 idx = sb_skip_white (idx + 1, in);
1782 /* skip along sb in starting at idx, suck off whitespace a ) and more
1783 whitespace. return the idx of the next char */
1786 skip_closep (idx, in)
1790 idx = sb_skip_white (idx, in);
1791 if (in->ptr[idx] != ')')
1792 ERROR ((stderr, "misplaced ).\n"));
1793 idx = sb_skip_white (idx + 1, in);
1800 dolen (idx, in, out)
1809 sb_new (&stringout);
1810 idx = skip_openp (idx, in);
1811 idx = get_and_process (idx, in, &stringout);
1812 idx = skip_closep (idx, in);
1813 sprintf (buffer, "%d", stringout.len);
1814 sb_add_string (out, buffer);
1816 sb_kill (&stringout);
1825 doinstr (idx, in, out)
1839 idx = skip_openp (idx, in);
1840 idx = get_and_process (idx, in, &string);
1841 idx = sb_skip_comma (idx, in);
1842 idx = get_and_process (idx, in, &search);
1843 idx = sb_skip_comma (idx, in);
1844 if (isdigit (in->ptr[idx]))
1846 idx = exp_get_abs (".instr needs absolute expresson.\n", idx, in, &start);
1852 idx = skip_closep (idx, in);
1854 for (i = start; i < string.len; i++)
1856 if (strncmp (string.ptr + i, search.ptr, search.len) == 0)
1862 sprintf (buffer, "%d", res);
1863 sb_add_string (out, buffer);
1871 dosubstr (idx, in, out)
1881 idx = skip_openp (idx, in);
1882 idx = get_and_process (idx, in, &string);
1883 idx = sb_skip_comma (idx, in);
1884 idx = exp_get_abs ("need absolute position.\n", idx, in, &pos);
1885 idx = sb_skip_comma (idx, in);
1886 idx = exp_get_abs ("need absolute length.\n", idx, in, &len);
1887 idx = skip_closep (idx, in);
1890 if (len < 0 || pos < 0 ||
1892 || pos + len > string.len)
1894 sb_add_string (out, " ");
1898 sb_add_char (out, '"');
1901 sb_add_char (out, string.ptr[pos++]);
1904 sb_add_char (out, '"');
1910 /* scan line, change tokens in the hash table to their replacements */
1912 process_assigns (idx, in, buf)
1917 while (idx < in->len)
1920 if (in->ptr[idx] == '\\'
1921 && in->ptr[idx + 1] == '&')
1923 idx = condass_lookup_name (in, idx + 2, buf, 1);
1925 else if (in->ptr[idx] == '\\'
1926 && in->ptr[idx + 1] == '$')
1928 idx = condass_lookup_name (in, idx + 2, buf, 0);
1930 else if (idx + 3 < in->len
1931 && in->ptr[idx] == '.'
1932 && in->ptr[idx + 1] == 'L'
1933 && in->ptr[idx + 2] == 'E'
1934 && in->ptr[idx + 3] == 'N')
1935 idx = dolen (idx + 4, in, buf);
1936 else if (idx + 6 < in->len
1937 && in->ptr[idx] == '.'
1938 && in->ptr[idx + 1] == 'I'
1939 && in->ptr[idx + 2] == 'N'
1940 && in->ptr[idx + 3] == 'S'
1941 && in->ptr[idx + 4] == 'T'
1942 && in->ptr[idx + 5] == 'R')
1943 idx = doinstr (idx + 6, in, buf);
1944 else if (idx + 7 < in->len
1945 && in->ptr[idx] == '.'
1946 && in->ptr[idx + 1] == 'S'
1947 && in->ptr[idx + 2] == 'U'
1948 && in->ptr[idx + 3] == 'B'
1949 && in->ptr[idx + 4] == 'S'
1950 && in->ptr[idx + 5] == 'T'
1951 && in->ptr[idx + 6] == 'R')
1952 idx = dosubstr (idx + 7, in, buf);
1953 else if (ISFIRSTCHAR (in->ptr[idx]))
1955 /* may be a simple name subsitution, see if we have a word */
1958 while (cur < in->len
1959 && (ISNEXTCHAR (in->ptr[cur])))
1963 sb_add_buffer (&acc, in->ptr + idx, cur - idx);
1964 ptr = hash_lookup (&assign_hash_table, &acc);
1967 /* Found a definition for it */
1968 sb_add_sb (buf, &ptr->value.s);
1972 /* No definition, just copy the word */
1973 sb_add_sb (buf, &acc);
1980 sb_add_char (buf, in->ptr[idx++]);
1986 get_and_process (idx, in, out)
1993 idx = get_any_string (idx, in, &t);
1994 process_assigns (0, &t, out);
2015 more = get_line (&line);
2018 /* Find any label and pseudo op that we're intested in */
2023 fprintf (outfile, "\n");
2027 l = grab_label (&line, &label_in);
2031 /* Munge any label */
2034 process_assigns (0, &label_in, &label);
2037 if (line.ptr[l] == ':')
2039 while (ISWHITE (line.ptr[l]) && l < line.len)
2044 if (process_pseudo_op (l, &line, &acc))
2050 else if (condass_on ())
2052 if (macro_op (l, &line))
2062 fprintf (outfile, "%s:\t", sb_name (&label));
2065 fprintf (outfile, "\t");
2067 process_assigns (l, &line, &t1);
2069 change_base (0, &t1, &t2);
2070 fprintf (outfile, "%s\n", sb_name (&t2));
2076 /* Only a label on this line */
2077 if (label.len && condass_on())
2079 fprintf (outfile, "%s:\n", sb_name (&label));
2087 more = get_line (&line);
2091 WARNING ((stderr, "END missing from end of file.\n"));
2099 free_old_entry (ptr)
2104 if (ptr->type == hash_string)
2105 sb_kill(&ptr->value.s);
2109 /* name: .ASSIGNA <value> */
2112 do_assigna (idx, in)
2120 process_assigns (idx, in, &tmp);
2121 idx = exp_get_abs (".ASSIGNA needs constant expression argument.\n", 0, &tmp, &val);
2125 ERROR ((stderr, ".ASSIGNA without label.\n"));
2129 hash_entry *ptr = hash_create (&vars, &label);
2130 free_old_entry (ptr);
2131 ptr->type = hash_integer;
2137 /* name: .ASSIGNC <string> */
2140 do_assignc (idx, in)
2146 idx = getstring (idx, in, &acc);
2150 ERROR ((stderr, ".ASSIGNS without label.\n"));
2154 hash_entry *ptr = hash_create (&vars, &label);
2155 free_old_entry (ptr);
2156 ptr->type = hash_string;
2157 sb_new (&ptr->value.s);
2158 sb_add_sb (&ptr->value.s, &acc);
2164 /* name: .REG (reg) */
2171 /* remove reg stuff from inside parens */
2173 idx = skip_openp (idx, in);
2175 while (idx < in->len && in->ptr[idx] != ')')
2177 sb_add_char (&what, in->ptr[idx]);
2180 hash_add_to_string_table (&assign_hash_table, &label, &what, 1);
2186 condass_lookup_name (inbuf, idx, out, warn)
2194 sb_new (&condass_acc);
2196 while (idx < inbuf->len
2197 && ISNEXTCHAR (inbuf->ptr[idx]))
2199 sb_add_char (&condass_acc, inbuf->ptr[idx++]);
2202 if (inbuf->ptr[idx] == '\'')
2204 ptr = hash_lookup (&vars, &condass_acc);
2211 WARNING ((stderr, "Can't find preprocessor variable %s.\n", sb_name (&condass_acc)));
2215 sb_add_string (out, "0");
2220 if (ptr->type == hash_integer)
2223 sprintf (buffer, "%d", ptr->value.i);
2224 sb_add_string (out, buffer);
2228 sb_add_sb (out, &ptr->value.s);
2231 sb_kill (&condass_acc);
2244 whatcond (idx, in, val)
2251 idx = sb_skip_white (idx, in);
2253 if (p[0] == 'E' && p[1] == 'Q')
2255 else if (p[0] == 'N' && p[1] == 'E')
2257 else if (p[0] == 'L' && p[1] == 'T')
2259 else if (p[0] == 'L' && p[1] == 'E')
2261 else if (p[0] == 'G' && p[1] == 'T')
2263 else if (p[0] == 'G' && p[1] == 'E')
2267 ERROR ((stderr, "Comparison operator must be one of EQ, NE, LT, LE, GT or GE.\n"));
2270 idx = sb_skip_white (idx + 2, in);
2287 idx = sb_skip_white (idx, in);
2289 if (in->ptr[idx] == '"')
2293 /* This is a string comparision */
2294 idx = getstring (idx, in, &acc_a);
2295 idx = whatcond (idx, in, &cond);
2296 idx = getstring (idx, in, &acc_b);
2297 same = acc_a.len == acc_b.len && (strncmp (acc_a.ptr, acc_b.ptr, acc_a.len) == 0);
2299 if (cond != EQ && cond != NE)
2301 ERROR ((stderr, "Comparison operator for strings must be EQ or NE\n"));
2305 res = cond == EQ && same;
2308 /* This is a numeric expression */
2313 idx = exp_get_abs ("Conditional operator must have absolute operands.\n", idx, in, &vala);
2314 idx = whatcond (idx, in, &cond);
2315 idx = sb_skip_white (idx, in);
2316 if (in->ptr[idx] == '"')
2318 WARNING ((stderr, "String compared against expression.\n"));
2323 idx = exp_get_abs ("Conditional operator must have absolute operands.\n", idx, in, &valb);
2363 if (ifi >= IFNESTING)
2365 FATAL ((stderr, "AIF nesting unreasonable.\n"));
2368 ifstack[ifi].on = istrue (idx, in);
2369 ifstack[ifi].hadelse = 0;
2377 ifstack[ifi].on = !ifstack[ifi].on;
2378 if (ifstack[ifi].hadelse)
2380 ERROR ((stderr, "Multiple AELSEs in AIF.\n"));
2382 ifstack[ifi].hadelse = 1;
2396 ERROR ((stderr, "AENDI without AIF.\n"));
2403 return ifstack[ifi].on;
2407 /* Read input lines till we get to a TO string.
2408 Increase nesting depth if we geta FROM string.
2409 Put the results into sb at PTR. */
2412 buffer_and_nest (from, to, ptr)
2417 int from_len = strlen (from);
2418 int to_len = strlen (to);
2420 int line_start = ptr->len;
2421 int line = linecount ();
2423 int more = get_line (ptr);
2427 /* Try and find the first pseudo op on the line */
2432 /* With normal syntax we can suck what we want till we get to the dot.
2433 With the alternate, labels have to start in the first column, since
2434 we cant tell what's a label and whats a pseudoop */
2436 /* Skip leading whitespace */
2438 && ISWHITE (ptr->ptr[i]))
2441 /* Skip over a label */
2443 && ISNEXTCHAR (ptr->ptr[i]))
2448 && ptr->ptr[i] == ':')
2452 /* Skip trailing whitespace */
2454 && ISWHITE (ptr->ptr[i]))
2457 if (i < ptr->len && (ptr->ptr[i] == '.'
2460 if (ptr->ptr[i] == '.')
2462 if (strncmp (ptr->ptr + i, from, from_len) == 0)
2464 if (strncmp (ptr->ptr + i, to, to_len) == 0)
2469 /* Reset the string to not include the ending rune */
2470 ptr->len = line_start;
2476 /* Add a CR to the end and keep running */
2477 sb_add_char (ptr, '\n');
2478 line_start = ptr->len;
2479 more = get_line (ptr);
2484 FATAL ((stderr, "End of file whilst inside %s, started on line %d.\n", from, line));
2492 ERROR ((stderr, "AENDR without a AREPEAT.\n"));
2511 process_assigns (idx, in, &exp);
2512 doit = istrue (0, &exp);
2514 buffer_and_nest ("AWHILE", "AENDW", &sub);
2529 int index = include_next_index ();
2533 sb_add_sb (©, &sub);
2534 sb_add_sb (©, in);
2535 sb_add_string (©, "\n");
2536 sb_add_sb (©, &sub);
2537 sb_add_string (©, "\t.AENDW\n");
2538 /* Push another WHILE */
2539 include_buf (&exp, ©, include_while, index);
2552 ERROR ((stderr, "AENDW without a AENDW.\n"));
2558 Pop things off the include stack until the type and index changes */
2563 include_type type = sp->type;
2564 if (type == include_repeat
2565 || type == include_while
2566 || type == include_macro)
2568 int index = sp->index;
2570 while (sp->index == index
2571 && sp->type == type)
2581 do_arepeat (idx, in)
2585 sb exp; /* buffer with expression in it */
2586 sb copy; /* expanded repeat block */
2587 sb sub; /* contents of AREPEAT */
2593 process_assigns (idx, in, &exp);
2594 idx = exp_get_abs ("AREPEAT must have absolute operand.\n", 0, &exp, &rc);
2595 buffer_and_nest ("AREPEAT", "AENDR", &sub);
2598 /* Push back the text following the repeat, and another repeat block
2609 int index = include_next_index ();
2610 sb_add_sb (©, &sub);
2613 sprintf (buffer, "\t.AREPEAT %d\n", rc - 1);
2614 sb_add_string (©, buffer);
2615 sb_add_sb (©, &sub);
2616 sb_add_string (©, " .AENDR\n");
2619 include_buf (&exp, ©, include_repeat, index);
2631 ERROR ((stderr, ".ENDM without a matching .MACRO.\n"));
2635 /* MARRO PROCESSING */
2638 hash_table macro_table;
2648 do_formals (macro, idx, in)
2653 formal_entry **p = ¯o->formals;
2654 macro->formal_count = 0;
2655 hash_new_table (5, ¯o->formal_hash);
2656 while (idx < in->len)
2658 formal_entry *formal;
2660 formal = (formal_entry *) xmalloc (sizeof (formal_entry));
2662 sb_new (&formal->name);
2663 sb_new (&formal->def);
2664 sb_new (&formal->actual);
2666 idx = sb_skip_white (idx, in);
2667 idx = get_token (idx, in, &formal->name);
2668 if (formal->name.len == 0)
2670 idx = sb_skip_white (idx, in);
2671 if (formal->name.len)
2673 /* This is a formal */
2674 if (idx < in->len && in->ptr[idx] == '=')
2677 idx = get_any_string (idx + 1, in, &formal->def);
2682 /* Add to macro's hash table */
2684 hash_entry *p = hash_create (¯o->formal_hash, &formal->name);
2685 p->type = hash_formal;
2686 p->value.f = formal;
2689 formal->index = macro->formal_count;
2690 idx = sb_skip_comma (idx, in);
2691 macro->formal_count++;
2698 /* Parse off LOCAL n1, n2,... Invent a label name for it */
2701 do_local (idx, line)
2711 idx = sb_skip_white (idx, line);
2712 while (!eol(idx, line))
2717 sprintf(subs, "LL%04x", ln);
2718 idx = get_token(idx, line, &acc);
2719 sb_add_string (&sub, subs);
2720 hash_add_to_string_table (&assign_hash_table, &acc, &sub, 1);
2721 idx = sb_skip_comma (idx, line);
2736 macro = (macro_entry *) xmalloc (sizeof (macro_entry));
2737 sb_new (¯o->sub);
2740 macro->formal_count = 0;
2743 idx = sb_skip_white (idx, in);
2744 buffer_and_nest ("MACRO", "ENDM", ¯o->sub);
2748 sb_add_sb (&name, &label);
2749 if (in->ptr[idx] == '(')
2751 /* It's the label: MACRO (formals,...) sort */
2752 idx = do_formals (macro, idx + 1, in);
2753 if (in->ptr[idx] != ')')
2754 ERROR ((stderr, "Missing ) after formals.\n"));
2757 /* It's the label: MACRO formals,... sort */
2758 idx = do_formals (macro, idx, in);
2763 idx = get_token (idx, in, &name);
2764 idx = sb_skip_white (idx, in);
2765 idx = do_formals (macro, idx, in);
2768 /* and stick it in the macro hash table */
2769 hash_create (¯o_table, &name)->value.m = macro;
2774 get_token (idx, in, name)
2780 && ISFIRSTCHAR (in->ptr[idx]))
2782 sb_add_char (name, in->ptr[idx++]);
2783 while (idx < in->len
2784 && ISNEXTCHAR (in->ptr[idx]))
2786 sb_add_char (name, in->ptr[idx++]);
2792 /* Scan a token, but stop if a ' is seen */
2794 get_apost_token (idx, in, name, kind)
2800 idx = get_token (idx, in, name);
2801 if (idx < in->len && in->ptr[idx] == kind)
2807 sub_actual (src, in, t, m, kind, out, copyifnotthere)
2816 /* This is something to take care of */
2818 src = get_apost_token (src, in, t, kind);
2819 /* See if it's in the macro's hash table */
2820 ptr = hash_lookup (&m->formal_hash, t);
2823 if (ptr->value.f->actual.len)
2825 sb_add_sb (out, &ptr->value.f->actual);
2829 sb_add_sb (out, &ptr->value.f->def);
2832 else if (copyifnotthere)
2838 sb_add_char (out, '\\');
2846 macro_expand (name, idx, in, m)
2856 int is_positional = 0;
2862 /* Reset any old value the actuals may have */
2863 for (f = m->formals; f; f = f->next)
2864 sb_reset (&f->actual);
2866 /* Peel off the actuals and store them away in the hash tables' actuals */
2867 while (!eol(idx, in))
2870 idx = sb_skip_white (idx, in);
2871 /* Look and see if it's a positional or keyword arg */
2873 while (scan < in->len
2874 && !ISSEP (in->ptr[scan])
2875 && in->ptr[scan] != '=')
2877 if (scan < in->len && in->ptr[scan] == '=')
2882 ERROR ((stderr, "Can't mix positional and keyword arguments.\n"));
2885 /* This is a keyword arg, fetch the formal name and
2886 then the actual stuff */
2888 idx = get_token (idx, in, &t);
2889 if (in->ptr[idx] != '=')
2890 ERROR ((stderr, "confused about formal params.\n"));
2892 /* Lookup the formal in the macro's list */
2893 ptr = hash_lookup (&m->formal_hash, &t);
2896 ERROR ((stderr, "MACRO formal argument %s does not exist.\n", sb_name (&t)));
2901 /* Insert this value into the right place */
2902 sb_reset (&ptr->value.f->actual);
2903 idx = get_any_string (idx + 1, in, &ptr->value.f->actual);
2908 /* This is a positional arg */
2912 ERROR ((stderr, "Can't mix positional and keyword arguments.\n"));
2917 ERROR ((stderr, "Too many positional arguments.\n"));
2921 sb_reset (&f->actual);
2922 idx = get_any_string (idx, in, &f->actual);
2925 idx = sb_skip_comma (idx, in);
2928 /* Copy the stuff from the macro buffer into a safe place and substitute any args */
2936 while (src < in->len)
2938 if (in->ptr[src] == '&')
2941 src = sub_actual (src + 1, in, &t, m, '&', &out, 0);
2943 else if (in->ptr[src] == '\\')
2946 if (in->ptr[src] == comment_char)
2948 /* This is a comment, just drop the rest of the line */
2949 while (src < in->len
2950 && in->ptr[src] != '\n')
2954 else if (in->ptr[src] == '(')
2956 /* Sub in till the next ')' literally */
2958 while (src < in->len && in->ptr[src] != ')')
2960 sb_add_char (&out, in->ptr[src++]);
2962 if (in->ptr[src] == ')')
2965 ERROR ((stderr, "Missplaced ).\n"));
2967 else if (in->ptr[src] == '@')
2969 /* Sub in the macro invocation number */
2973 sprintf (buffer, "%05d", number);
2974 sb_add_string (&out, buffer);
2976 else if (in->ptr[src] == '&')
2978 /* This is a preprocessor variable name, we don't do them
2980 sb_add_char (&out, '\\');
2981 sb_add_char (&out, '&');
2987 src = sub_actual (src, in, &t, m, '\'', &out, 0);
2990 else if (ISFIRSTCHAR (in->ptr[src]) && alternate)
2993 src = sub_actual (src, in, &t, m, '\'', &out, 1);
2995 else if (ISCOMMENTCHAR (in->ptr[src])
2996 && src + 1 < in->len
2997 && ISCOMMENTCHAR (in->ptr[src+1])
3000 /* Two comment chars in a row cause the rest of the line to be dropped */
3001 while (src < in->len && in->ptr[src] != '\n')
3004 else if (in->ptr[src] == '"')
3007 sb_add_char (&out, in->ptr[src++]);
3011 sb_add_char (&out, in->ptr[src++]);
3014 include_buf (name, &out, include_macro, include_next_index ());
3027 /* The macro name must be the first thing on the line */
3033 idx = get_token (idx, in, &name);
3037 /* Got a name, look it up */
3039 ptr = hash_lookup (¯o_table, &name);
3043 /* It's in the table, copy out the stuff and convert any macro args */
3044 macro_expand (&name, idx, in, ptr->value.m);
3056 /* STRING HANDLING */
3059 getstring (idx, in, acc)
3064 idx = sb_skip_white (idx, in);
3066 while (idx < in->len
3067 && (in->ptr[idx] == '"'
3068 || in->ptr[idx] == '<'
3069 || (in->ptr[idx] == '\'' && alternate)))
3071 if (in->ptr[idx] == '<')
3077 while ((in->ptr[idx] != '>' || nest)
3080 if (in->ptr[idx] == '!')
3083 sb_add_char (acc, in->ptr[idx++]);
3086 if (in->ptr[idx] == '>')
3088 if (in->ptr[idx] == '<')
3090 sb_add_char (acc, in->ptr[idx++]);
3098 idx = exp_get_abs ("Character code in string must be absolute expression.\n",
3100 sb_add_char (acc, code);
3102 if (in->ptr[idx] != '>')
3103 ERROR ((stderr, "Missing > for character code.\n"));
3107 else if (in->ptr[idx] == '"' || in->ptr[idx] == '\'')
3109 char tchar = in->ptr[idx];
3111 while (idx < in->len)
3113 if (alternate && in->ptr[idx] == '!')
3116 sb_add_char (acc, in->ptr[idx++]);
3119 if (in->ptr[idx] == tchar)
3122 if (idx >= in->len || in->ptr[idx] != tchar)
3125 sb_add_char (acc, in->ptr[idx]);
3135 /* .SDATA[C|Z] <string> */
3139 do_sdata (idx, in, type)
3148 fprintf (outfile, ".byte\t");
3150 while (!eol (idx, in))
3154 idx = sb_skip_white (idx, in);
3155 while (!eol (idx, in))
3157 pidx = idx = get_any_string (idx, in, &acc);
3162 ERROR ((stderr, "string for SDATAC longer than 255 characters (%d).\n", acc.len));
3164 fprintf (outfile, "%d", acc.len);
3168 for (i = 0; i < acc.len; i++)
3172 fprintf (outfile, ",");
3174 fprintf (outfile, "%d", acc.ptr[i]);
3181 fprintf (outfile, ",");
3182 fprintf (outfile, "0");
3184 idx = sb_skip_comma (idx, in);
3185 if (idx == pidx) break;
3187 if (!alternate && in->ptr[idx] != ',' && idx != in->len)
3189 fprintf (outfile, "\n");
3190 ERROR ((stderr, "illegal character in SDATA line (0x%x).\n", in->ptr[idx]));
3196 fprintf (outfile, "\n");
3199 /* .SDATAB <count> <string> */
3211 idx = exp_get_abs ("Must have absolute SDATAB repeat count.\n", idx, in, &repeat);
3214 ERROR ((stderr, "Must have positive SDATAB repeat count (%d).\n", repeat));
3218 idx = sb_skip_comma (idx, in);
3219 idx = getstring (idx, in, &acc);
3221 for (i = 0; i < repeat; i++)
3224 fprintf (outfile, "\t");
3225 fprintf (outfile, ".byte\t");
3227 fprintf (outfile, "\n");
3237 FILE *newone = fopen (name, "r");
3241 if (isp == MAX_INCLUDES)
3242 FATAL ((stderr, "Unreasonable include depth (%d).\n", isp));
3245 sp->handle = newone;
3248 sb_add_string (&sp->name, name);
3251 sp->pushback_index = 0;
3252 sp->type = include_file;
3254 sb_new (&sp->pushback);
3259 do_include (idx, in)
3266 idx = getstring (idx, in, &t);
3267 text = sb_name (&t);
3268 if (!new_file (text))
3270 FATAL ((stderr, "Can't open include file `%s'.\n", text));
3278 if (sp != include_stack)
3281 fclose (sp->handle);
3286 /* Get the next character from the include stack. If there's anything
3287 in the pushback buffer, take that first. If we're at eof, pop from
3288 the stack and try again. Keep the linecount up to date. */
3295 if (sp->pushback.len != sp->pushback_index)
3297 r = (char) (sp->pushback.ptr[sp->pushback_index++]);
3298 /* When they've all gone, reset the pointer */
3299 if (sp->pushback_index == sp->pushback.len)
3301 sp->pushback.len = 0;
3302 sp->pushback_index = 0;
3305 else if (sp->handle)
3307 r = getc (sp->handle);
3312 if (r == EOF && isp)
3316 while (r == EOF && isp)
3334 return sp->linecount;
3338 include_next_index ()
3342 && index > MAX_REASONABLE)
3343 FATAL ((stderr, "Unreasonable expansion (-u turns off check).\n"));
3348 /* Initialize the chartype vector. */
3354 for (x = 0; x < 256; x++)
3356 if (isalpha (x) || x == '_' || x == '$')
3357 chartype[x] |= FIRSTBIT;
3359 if (isdigit (x) || isalpha (x) || x == '_' || x == '$')
3360 chartype[x] |= NEXTBIT;
3362 if (x == ' ' || x == '\t' || x == ',' || x == '"' || x == ';'
3363 || x == '"' || x == '<' || x == '>' || x == ')' || x == '(')
3364 chartype[x] |= SEPBIT;
3366 if (x == ' ' || x == '\t')
3367 chartype[x] |= WHITEBIT;
3369 if (x == comment_char)
3370 chartype[x] |= COMMENTBIT;
3376 /* What to do with all the keywords */
3377 #define PROCESS 0x1000 /* Run substitution over the line */
3378 #define LAB 0x2000 /* Spit out the label */
3380 #define K_EQU PROCESS|1
3381 #define K_ASSIGN PROCESS|2
3382 #define K_REG PROCESS|3
3383 #define K_ORG PROCESS|4
3384 #define K_RADIX PROCESS|5
3385 #define K_DATA LAB|PROCESS|6
3386 #define K_DATAB LAB|PROCESS|7
3387 #define K_SDATA LAB|PROCESS|8
3388 #define K_SDATAB LAB|PROCESS|9
3389 #define K_SDATAC LAB|PROCESS|10
3390 #define K_SDATAZ LAB|PROCESS|11
3391 #define K_RES LAB|PROCESS|12
3392 #define K_SRES LAB|PROCESS|13
3393 #define K_SRESC LAB|PROCESS|14
3394 #define K_SRESZ LAB|PROCESS|15
3395 #define K_EXPORT LAB|PROCESS|16
3396 #define K_GLOBAL LAB|PROCESS|17
3397 #define K_PRINT LAB|PROCESS|19
3398 #define K_FORM LAB|PROCESS|20
3399 #define K_HEADING LAB|PROCESS|21
3400 #define K_PAGE LAB|PROCESS|22
3401 #define K_IMPORT LAB|PROCESS|23
3402 #define K_PROGRAM LAB|PROCESS|24
3403 #define K_END PROCESS|25
3404 #define K_INCLUDE PROCESS|26
3405 #define K_IGNORED PROCESS|27
3406 #define K_ASSIGNA PROCESS|28
3407 #define K_ASSIGNC 29
3408 #define K_AIF PROCESS|30
3409 #define K_AELSE PROCESS|31
3410 #define K_AENDI PROCESS|32
3411 #define K_AREPEAT PROCESS|33
3412 #define K_AENDR PROCESS|34
3414 #define K_AENDW PROCESS|36
3416 #define K_MACRO PROCESS|38
3418 #define K_ALIGN PROCESS|LAB|40
3419 #define K_ALTERNATE 41
3420 #define K_DB LAB|PROCESS|42
3421 #define K_DW LAB|PROCESS|43
3422 #define K_DL LAB|PROCESS|44
3434 { "EQU", K_EQU, 0 },
3435 { "ALTERNATE", K_ALTERNATE, 0 },
3436 { "ASSIGN", K_ASSIGN, 0 },
3437 { "REG", K_REG, 0 },
3438 { "ORG", K_ORG, 0 },
3439 { "RADIX", K_RADIX, 0 },
3440 { "DATA", K_DATA, 0 },
3444 { "DATAB", K_DATAB, 0 },
3445 { "SDATA", K_SDATA, 0 },
3446 { "SDATAB", K_SDATAB, 0 },
3447 { "SDATAZ", K_SDATAZ, 0 },
3448 { "SDATAC", K_SDATAC, 0 },
3449 { "RES", K_RES, 0 },
3450 { "SRES", K_SRES, 0 },
3451 { "SRESC", K_SRESC, 0 },
3452 { "SRESZ", K_SRESZ, 0 },
3453 { "EXPORT", K_EXPORT, 0 },
3454 { "GLOBAL", K_GLOBAL, 0 },
3455 { "PRINT", K_PRINT, 0 },
3456 { "FORM", K_FORM, 0 },
3457 { "HEADING", K_HEADING, 0 },
3458 { "PAGE", K_PAGE, 0 },
3459 { "PROGRAM", K_IGNORED, 0 },
3460 { "END", K_END, 0 },
3461 { "INCLUDE", K_INCLUDE, 0 },
3462 { "ASSIGNA", K_ASSIGNA, 0 },
3463 { "ASSIGNC", K_ASSIGNC, 0 },
3464 { "AIF", K_AIF, 0 },
3465 { "AELSE", K_AELSE, 0 },
3466 { "AENDI", K_AENDI, 0 },
3467 { "AREPEAT", K_AREPEAT, 0 },
3468 { "AENDR", K_AENDR, 0 },
3469 { "EXITM", K_EXITM, 0 },
3470 { "MACRO", K_MACRO, 0 },
3471 { "ENDM", K_ENDM, 0 },
3472 { "AWHILE", K_AWHILE, 0 },
3473 { "ALIGN", K_ALIGN, 0 },
3474 { "AENDW", K_AENDW, 0 },
3475 { "ALTERNATE", K_ALTERNATE, 0 },
3476 { "LOCAL", K_LOCAL, 0 },
3480 /* Look for a pseudo op on the line. If one's there then call
3484 process_pseudo_op (idx, line, acc)
3491 if (line->ptr[idx] == '.' || alternate)
3493 /* Scan forward and find pseudo name */
3499 if (line->ptr[idx] == '.')
3501 in = line->ptr + idx;
3506 while (idx < line->len && *e && ISFIRSTCHAR (*e))
3508 sb_add_char (acc, *e);
3513 ptr = hash_lookup (&keyword_hash_table, acc);
3518 /* This one causes lots of pain when trying to preprocess
3520 WARNING ((stderr, "Unrecognised pseudo op `%s'.\n", sb_name (acc)));
3524 if (ptr->value.i & LAB)
3525 { /* output the label */
3528 fprintf (outfile, "%s:\t", sb_name (&label));
3531 fprintf (outfile, "\t");
3534 if (ptr->value.i & PROCESS)
3536 /* Polish the rest of the line before handling the pseudo op */
3538 strip_comments(line);
3541 process_assigns (idx, line, acc);
3543 change_base (0, acc, line);
3548 switch (ptr->value.i)
3561 switch (ptr->value.i)
3573 ERROR ((stderr, "ORG command not allowed.\n"));
3579 do_data (idx, line, 1);
3582 do_data (idx, line, 2);
3585 do_data (idx, line, 4);
3588 do_data (idx, line, 0);
3591 do_datab (idx, line);
3594 do_sdata (idx, line, 0);
3597 do_sdatab (idx, line);
3600 do_sdata (idx, line, 'c');
3603 do_sdata (idx, line, 'z');
3606 do_assign (1, 0, line);
3612 do_arepeat (idx, line);
3618 do_awhile (idx, line);
3624 do_assign (0, idx, line);
3627 do_align (idx, line);
3630 do_res (idx, line, 0);
3633 do_res (idx, line, 's');
3636 do_include (idx, line);
3639 do_local (idx, line);
3642 do_macro (idx, line);
3648 do_res (idx, line, 'c');
3651 do_print (idx, line);
3654 do_form (idx, line);
3657 do_heading (idx, line);
3669 do_res (idx, line, 'z');
3677 do_assigna (idx, line);
3680 do_assignc (idx, line);
3696 /* Build the keyword hash table - put each keyword in the table twice,
3697 once upper and once lower case.*/
3704 for (i = 0; kinfo[i].name; i++)
3709 sb_add_string (&label, kinfo[i].name);
3711 hash_add_to_int_table (&keyword_hash_table, &label, kinfo[i].code);
3714 for (j = 0; kinfo[i].name[j]; j++)
3715 sb_add_char (&label, kinfo[i].name[j] - 'A' + 'a');
3716 hash_add_to_int_table (&keyword_hash_table, &label, kinfo[i].code);
3742 sb_add_char (&value, *string);
3745 exp_get_abs ("Invalid expression on command line.\n", 0, &value, &res);
3749 sb_add_char (&label, *string);
3754 ptr = hash_create (&vars, &label);
3755 free_old_entry (ptr);
3756 ptr->type = hash_integer;
3762 /* The list of long options. */
3763 static struct option long_options[] =
3765 { "alternate", no_argument, 0, 'a' },
3766 { "commentchar", required_argument, 0, 'c' },
3767 { "copysource", no_argument, 0, 's' },
3768 { "debug", no_argument, 0, 'd' },
3769 { "help", no_argument, 0, 'h' },
3770 { "output", required_argument, 0, 'o' },
3771 { "print", no_argument, 0, 'p' },
3772 { "unreasonable", no_argument, 0, 'u' },
3773 { "version", no_argument, 0, 'v' },
3774 { "define", required_argument, 0, 'd' },
3775 { NULL, no_argument, 0, 0 }
3778 /* Show a usage message and exit. */
3780 show_usage (file, status)
3786 [-a] [--alternate] enter alternate macro mode\n\
3787 [-c char] [--commentchar char] change the comment character from !\n\
3788 [-d] [--debug] print some debugging info\n\
3789 [-h] [--help] print this message\n\
3790 [-o out] [--output out] set the output file\n\
3791 [-p] [--print] print line numbers\n\
3792 [-s] [--copysource] copy source through as comments \n\
3793 [-u] [--unreasonable] allow unreasonable nesting\n\
3794 [-v] [--version] print the program version\n\
3795 [-Dname=value] create preprocessor variable called name, with value\n\
3796 [in-file]\n", program_name);
3800 /* Display a help message and exit. */
3804 printf ("%s: Gnu Assembler Macro Preprocessor\n",
3806 show_usage (stdout, 0);
3823 program_name = argv[0];
3824 xmalloc_set_program_name (program_name);
3826 hash_new_table (101, ¯o_table);
3827 hash_new_table (101, &keyword_hash_table);
3828 hash_new_table (101, &assign_hash_table);
3829 hash_new_table (101, &vars);
3834 while ((opt = getopt_long (argc, argv, "sdhavc:upo:D:", long_options,
3847 print_line_number = 1;
3850 comment_char = optarg[0];
3868 printf ("GNU %s version %s\n", program_name, program_version);
3874 show_usage (stderr, 1);
3881 outfile = fopen (out_name, "w");
3884 fprintf (stderr, "%s: Can't open output file `%s'.\n",
3885 program_name, out_name);
3897 /* Process all the input files */
3899 while (optind < argc)
3901 if (new_file (argv[optind]))
3907 fprintf (stderr, "%s: Can't open input file `%s'.\n",
3908 program_name, argv[optind]);