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- /* read.c - read a source file -
- Copyright (C) 1986, 1987, 1990, 1991 Free Software Foundation, Inc.
-
- This file is part of GAS, the GNU Assembler.
-
- GAS is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- GAS is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GAS; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #if 0
- #define MASK_CHAR (0xFF) /* If your chars aren't 8 bits, you will
- change this a bit. But then, GNU isn't
- spozed to run on your machine anyway.
- (RMS is so shortsighted sometimes.)
- */
- #else
- #define MASK_CHAR ((int)(unsigned char)-1)
- #endif
-
-
- /* This is the largest known floating point format (for now). It will
- grow when we do 4361 style flonums. */
-
- #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16)
-
- /* Routines that read assembler source text to build spagetti in memory.
- Another group of these functions is in the expr.c module. */
-
- /* for isdigit() */
- #include <ctype.h>
-
- #include "as.h"
- #ifdef BFD_ASSEMBLER
- #include "subsegs.h"
- #endif
-
- #include "obstack.h"
- #include "listing.h"
-
-
- #ifndef TC_START_LABEL
- #define TC_START_LABEL(x,y) (x==':')
- #endif
-
- /* The NOP_OPCODE is for the alignment fill value.
- * fill it a nop instruction so that the disassembler does not choke
- * on it
- */
- #ifndef NOP_OPCODE
- #define NOP_OPCODE 0x00
- #endif
-
- char *input_line_pointer; /*->next char of source file to parse. */
-
- #if BITS_PER_CHAR != 8
- /* The following table is indexed by[(char)] and will break if
- a char does not have exactly 256 states (hopefully 0:255!)! */
- die horribly;
- #endif
-
- /* used by is_... macros. our ctype[] */
- const char lex_type[256] =
- {
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */
- 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */
- 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 3, /* PQRSTUVWXYZ[\]^_ */
- 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 0, /* pqrstuvwxyz{|}~. */
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- };
-
-
- /*
- * In: a character.
- * Out: 1 if this character ends a line.
- */
- #define _ (0)
- char is_end_of_line[256] =
- {
- #ifdef CR_EOL
- _, _, _, _, _, _, _, _, _, _, 99, _, _, 99, _, _, /* @abcdefghijklmno */
- #else
- _, _, _, _, _, _, _, _, _, _, 99, _, _, _, _, _, /* @abcdefghijklmno */
- #endif
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, 99, _, _, _, _, /* 0123456789:;<=>? */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- };
- #undef _
-
- /* Functions private to this file. */
-
- static char *buffer; /* 1st char of each buffer of lines is here. */
- static char *buffer_limit; /*->1 + last char in buffer. */
-
- static char *bignum_low; /* Lowest char of bignum. */
- static char *bignum_limit; /* 1st illegal address of bignum. */
- static char *bignum_high; /* Highest char of bignum. */
- /* May point to (bignum_start-1). */
- /* Never >= bignum_limit. */
-
- int target_big_endian;
-
- static char *old_buffer; /* JF a hack */
- static char *old_input;
- static char *old_limit;
-
- /* Variables for handling include file directory list. */
-
- char **include_dirs; /* List of pointers to directories to
- search for .include's */
- int include_dir_count; /* How many are in the list */
- int include_dir_maxlen = 1;/* Length of longest in list */
-
- #ifndef WORKING_DOT_WORD
- struct broken_word *broken_words;
- int new_broken_words;
- #endif
-
- static char *demand_copy_string PARAMS ((int *lenP));
- int is_it_end_of_statement PARAMS ((void));
- unsigned int next_char_of_string PARAMS ((void));
- static segT get_known_segmented_expression PARAMS ((expressionS * expP));
- static void grow_bignum PARAMS ((void));
- static void pobegin PARAMS ((void));
-
- extern int listing;
-
-
- void
- read_begin ()
- {
- const char *p;
-
- pobegin ();
- obj_read_begin_hook ();
-
- obstack_begin (¬es, 5000);
- obstack_begin (&cond_obstack, 960);
-
- #define BIGNUM_BEGIN_SIZE (16)
- bignum_low = xmalloc ((long) BIGNUM_BEGIN_SIZE);
- bignum_limit = bignum_low + BIGNUM_BEGIN_SIZE;
-
- /* Use machine dependent syntax */
- for (p = line_separator_chars; *p; p++)
- is_end_of_line[*p] = 1;
- /* Use more. FIXME-SOMEDAY. */
- }
-
- /* set up pseudo-op tables */
-
- struct hash_control *po_hash;
-
- static const pseudo_typeS potable[] =
- {
- {"abort", s_abort, 0},
- {"align", s_align_ptwo, 0},
- {"ascii", stringer, 0},
- {"asciz", stringer, 1},
- /* block */
- {"byte", cons, 1},
- {"comm", s_comm, 0},
- {"data", s_data, 0},
- /* dim */
- {"double", float_cons, 'd'},
- /* dsect */
- {"eject", listing_eject, 0}, /* Formfeed listing */
- {"else", s_else, 0},
- {"end", s_end, 0},
- {"endif", s_endif, 0},
- /* endef */
- {"equ", s_set, 0},
- /* err */
- /* extend */
- {"extern", s_ignore, 0}, /* We treat all undef as ext */
- {"appfile", s_app_file, 0},
- {"file", s_app_file, 0},
- {"fill", s_fill, 0},
- {"float", float_cons, 'f'},
- {"global", s_globl, 0},
- {"globl", s_globl, 0},
- {"hword", cons, 2},
- {"if", s_if, 0},
- {"ifdef", s_ifdef, 0},
- {"ifeqs", s_ifeqs, 0},
- {"ifndef", s_ifdef, 1},
- {"ifnes", s_ifeqs, 1},
- {"ifnotdef", s_ifdef, 1},
- {"include", s_include, 0},
- {"int", cons, 4},
- {"lcomm", s_lcomm, 0},
- {"lflags", listing_flags, 0}, /* Listing flags */
- {"list", listing_list, 1}, /* Turn listing on */
- {"long", cons, 4},
- {"lsym", s_lsym, 0},
- {"nolist", listing_list, 0}, /* Turn listing off */
- {"octa", big_cons, 16},
- {"org", s_org, 0},
- {"psize", listing_psize, 0}, /* set paper size */
- /* print */
- {"quad", big_cons, 8},
- {"sbttl", listing_title, 1}, /* Subtitle of listing */
- /* scl */
- /* sect */
- {"set", s_set, 0},
- {"short", cons, 2},
- {"single", float_cons, 'f'},
- /* size */
- {"space", s_space, 0},
- /* tag */
- {"text", s_text, 0},
- {"title", listing_title, 0}, /* Listing title */
- /* type */
- /* use */
- /* val */
- {"word", cons, 2},
- {NULL} /* end sentinel */
- };
-
- static void
- pobegin ()
- {
- char *errtxt; /* error text */
- const pseudo_typeS *pop;
-
- po_hash = hash_new ();
-
- /* Do the target-specific pseudo ops. */
- for (pop = md_pseudo_table; pop->poc_name; pop++)
- {
- errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop);
- if (errtxt && *errtxt)
- {
- as_fatal ("error constructing md pseudo-op table");
- } /* on error */
- } /* for each op */
-
- /* Now object specific. Skip any that were in the target table. */
- for (pop = obj_pseudo_table; pop->poc_name; pop++)
- {
- errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop);
- if (errtxt && *errtxt)
- {
- if (!strcmp (errtxt, "exists"))
- {
- #ifdef DIE_ON_OVERRIDES
- as_fatal ("pseudo op \".%s\" overridden.\n", pop->poc_name);
- #endif /* DIE_ON_OVERRIDES */
- continue; /* OK if target table overrides. */
- }
- else
- {
- as_fatal ("error constructing obj pseudo-op table");
- } /* if overridden */
- } /* on error */
- } /* for each op */
-
- /* Now portable ones. Skip any that we've seen already. */
- for (pop = potable; pop->poc_name; pop++)
- {
- errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop);
- if (errtxt && *errtxt)
- {
- if (!strcmp (errtxt, "exists"))
- {
- #ifdef DIE_ON_OVERRIDES
- as_fatal ("pseudo op \".%s\" overridden.\n", pop->poc_name);
- #endif /* DIE_ON_OVERRIDES */
- continue; /* OK if target table overrides. */
- }
- else
- {
- as_fatal ("error constructing obj pseudo-op table");
- } /* if overridden */
- } /* on error */
- } /* for each op */
-
- return;
- } /* pobegin() */
-
- #define HANDLE_CONDITIONAL_ASSEMBLY() \
- if (ignore_input ()) \
- { \
- while (! is_end_of_line[*input_line_pointer++]) \
- if (input_line_pointer == buffer_limit) \
- break; \
- continue; \
- }
-
-
- /* read_a_source_file()
- *
- * We read the file, putting things into a web that
- * represents what we have been reading.
- */
- void
- read_a_source_file (name)
- char *name;
- {
- register char c;
- register char *s; /* string of symbol, '\0' appended */
- register int temp;
- /* register struct frag * fragP; JF unused *//* a frag we just made */
- pseudo_typeS *pop;
-
- buffer = input_scrub_new_file (name);
-
- listing_file (name);
- listing_newline ("");
-
- while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0)
- { /* We have another line to parse. */
- know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */
- contin: /* JF this goto is my fault I admit it.
- Someone brave please re-write the whole
- input section here? Pleeze??? */
- while (input_line_pointer < buffer_limit)
- {
- /* We have more of this buffer to parse. */
-
- /*
- * We now have input_line_pointer->1st char of next line.
- * If input_line_pointer [-1] == '\n' then we just
- * scanned another line: so bump line counters.
- */
- if (input_line_pointer[-1] == '\n')
- {
- bump_line_counters ();
-
- #ifdef MRI
- /* Text at the start of a line must be a label, we run down and stick a colon in */
- if (is_name_beginner (*input_line_pointer))
- {
- char *line_start = input_line_pointer;
- char c = get_symbol_end ();
- colon (line_start);
- *input_line_pointer = c;
- if (c == ':')
- input_line_pointer++;
-
- }
- #endif
- }
-
-
- /*
- * We are at the begining of a line, or similar place.
- * We expect a well-formed assembler statement.
- * A "symbol-name:" is a statement.
- *
- * Depending on what compiler is used, the order of these tests
- * may vary to catch most common case 1st.
- * Each test is independent of all other tests at the (top) level.
- * PLEASE make a compiler that doesn't use this assembler.
- * It is crufty to waste a compiler's time encoding things for this
- * assembler, which then wastes more time decoding it.
- * (And communicating via (linear) files is silly!
- * If you must pass stuff, please pass a tree!)
- */
- if ((c = *input_line_pointer++) == '\t'
- || c == ' '
- || c == '\f'
- || c == 0)
- {
- c = *input_line_pointer++;
- }
- know (c != ' '); /* No further leading whitespace. */
- LISTING_NEWLINE ();
- /*
- * C is the 1st significant character.
- * Input_line_pointer points after that character.
- */
- if (is_name_beginner (c))
- { /* want user-defined label or pseudo/opcode */
- HANDLE_CONDITIONAL_ASSEMBLY ();
-
- s = --input_line_pointer;
- c = get_symbol_end (); /* name's delimiter */
- /*
- * C is character after symbol.
- * That character's place in the input line is now '\0'.
- * S points to the beginning of the symbol.
- * [In case of pseudo-op, s->'.'.]
- * Input_line_pointer->'\0' where c was.
- */
- if (TC_START_LABEL(c, input_line_pointer))
- {
- colon (s); /* user-defined label */
- *input_line_pointer++ = ':'; /* Put ':' back for error messages' sake. */
- /* Input_line_pointer->after ':'. */
- SKIP_WHITESPACE ();
-
-
- }
- else if (c == '=' || input_line_pointer[1] == '=')
- {
- equals (s);
- demand_empty_rest_of_line ();
- }
- else
- { /* expect pseudo-op or machine instruction */
- #ifdef MRI
- if (!done_pseudo (s))
-
- #else
- if (*s == '.')
- {
- /*
- * PSEUDO - OP.
- *
- * WARNING: c has next char, which may be end-of-line.
- * We lookup the pseudo-op table with s+1 because we
- * already know that the pseudo-op begins with a '.'.
- */
-
- pop = (pseudo_typeS *) hash_find (po_hash, s + 1);
-
- /* Print the error msg now, while we still can */
- if (!pop)
- {
- as_bad ("Unknown pseudo-op: `%s'", s);
- *input_line_pointer = c;
- s_ignore (0);
- break;
- }
-
- /* Put it back for error messages etc. */
- *input_line_pointer = c;
- /* The following skip of whitespace is compulsory.
- A well shaped space is sometimes all that separates
- keyword from operands. */
- if (c == ' ' || c == '\t')
- {
- input_line_pointer++;
- } /* Skip seperator after keyword. */
- /*
- * Input_line is restored.
- * Input_line_pointer->1st non-blank char
- * after pseudo-operation.
- */
- if (!pop)
- {
- ignore_rest_of_line ();
- break;
- }
- else
- {
- (*pop->poc_handler) (pop->poc_val);
- } /* if we have one */
- }
- else
- #endif
- { /* machine instruction */
- /* WARNING: c has char, which may be end-of-line. */
- /* Also: input_line_pointer->`\0` where c was. */
- *input_line_pointer = c;
- while (!is_end_of_line[*input_line_pointer])
- {
- input_line_pointer++;
- }
-
- c = *input_line_pointer;
- *input_line_pointer = '\0';
-
- md_assemble (s); /* Assemble 1 instruction. */
-
- *input_line_pointer++ = c;
-
- /* We resume loop AFTER the end-of-line from this instruction */
- } /* if (*s=='.') */
-
- } /* if c==':' */
- continue;
- } /* if (is_name_beginner(c) */
-
-
- if (is_end_of_line[c])
- {
- continue;
- } /* empty statement */
-
-
- #if defined(LOCAL_LABELS_DOLLAR) || defined(LOCAL_LABELS_FB)
- if (isdigit (c))
- { /* local label ("4:") */
- char *backup = input_line_pointer;
-
- HANDLE_CONDITIONAL_ASSEMBLY ();
-
- temp = c - '0';
-
- while (isdigit (*input_line_pointer))
- {
- temp = (temp * 10) + *input_line_pointer - '0';
- ++input_line_pointer;
- } /* read the whole number */
-
- #ifdef LOCAL_LABELS_DOLLAR
- if (*input_line_pointer == '$'
- && *(input_line_pointer + 1) == ':')
- {
- input_line_pointer += 2;
-
- if (dollar_label_defined (temp))
- {
- as_fatal ("label \"%d$\" redefined", temp);
- }
-
- define_dollar_label (temp);
- colon (dollar_label_name (temp, 0));
- continue;
- }
- #endif /* LOCAL_LABELS_DOLLAR */
-
- #ifdef LOCAL_LABELS_FB
- if (*input_line_pointer++ == ':')
- {
- fb_label_instance_inc (temp);
- colon (fb_label_name (temp, 0));
- continue;
- }
- #endif /* LOCAL_LABELS_FB */
-
- input_line_pointer = backup;
- } /* local label ("4:") */
- #endif /* LOCAL_LABELS_DOLLAR or LOCAL_LABELS_FB */
-
- if (c && strchr (line_comment_chars, c))
- { /* Its a comment. Better say APP or NO_APP */
- char *ends;
- char *new_buf;
- char *new_tmp;
- int new_length;
- char *tmp_buf = 0;
- extern char *scrub_string, *scrub_last_string;
-
- bump_line_counters ();
- s = input_line_pointer;
- if (strncmp (s, "APP\n", 4))
- continue; /* We ignore it */
- s += 4;
-
- ends = strstr (s, "#NO_APP\n");
-
- if (!ends)
- {
- int tmp_len;
- int num;
-
- /* The end of the #APP wasn't in this buffer. We
- keep reading in buffers until we find the #NO_APP
- that goes with this #APP There is one. The specs
- guarentee it. . . */
- tmp_len = buffer_limit - s;
- tmp_buf = xmalloc (tmp_len + 1);
- bcopy (s, tmp_buf, tmp_len);
- do
- {
- new_tmp = input_scrub_next_buffer (&buffer);
- if (!new_tmp)
- break;
- else
- buffer_limit = new_tmp;
- input_line_pointer = buffer;
- ends = strstr (buffer, "#NO_APP\n");
- if (ends)
- num = ends - buffer;
- else
- num = buffer_limit - buffer;
-
- tmp_buf = xrealloc (tmp_buf, tmp_len + num);
- bcopy (buffer, tmp_buf + tmp_len, num);
- tmp_len += num;
- }
- while (!ends);
-
- input_line_pointer = ends ? ends + 8 : NULL;
-
- s = tmp_buf;
- ends = s + tmp_len;
-
- }
- else
- {
- input_line_pointer = ends + 8;
- }
- new_buf = xmalloc (100);
- new_length = 100;
- new_tmp = new_buf;
-
- scrub_string = s;
- scrub_last_string = ends;
- for (;;)
- {
- int ch;
-
- ch = do_scrub_next_char (scrub_from_string, scrub_to_string);
- if (ch == EOF)
- break;
- *new_tmp++ = ch;
- if (new_tmp == new_buf + new_length)
- {
- new_buf = xrealloc (new_buf, new_length + 100);
- new_tmp = new_buf + new_length;
- new_length += 100;
- }
- }
-
- if (tmp_buf)
- free (tmp_buf);
- old_buffer = buffer;
- old_input = input_line_pointer;
- old_limit = buffer_limit;
- buffer = new_buf;
- input_line_pointer = new_buf;
- buffer_limit = new_tmp;
- continue;
- }
-
- HANDLE_CONDITIONAL_ASSEMBLY ();
-
- /* as_warn("Junk character %d.",c); Now done by ignore_rest */
- input_line_pointer--; /* Report unknown char as ignored. */
- ignore_rest_of_line ();
- } /* while (input_line_pointer<buffer_limit) */
- if (old_buffer)
- {
- bump_line_counters ();
- if (old_input != 0)
- {
- buffer = old_buffer;
- input_line_pointer = old_input;
- buffer_limit = old_limit;
- old_buffer = 0;
- goto contin;
- }
- }
- } /* while (more buffers to scan) */
- input_scrub_close (); /* Close the input file */
-
- } /* read_a_source_file() */
-
- void
- s_abort ()
- {
- as_fatal (".abort detected. Abandoning ship.");
- } /* s_abort() */
-
- /* For machines where ".align 4" means align to a 4 byte boundary. */
- void
- s_align_bytes (arg)
- int arg;
- {
- register unsigned int temp;
- register long temp_fill;
- unsigned int i = 0;
- unsigned long max_alignment = 1 << 15;
-
- if (is_end_of_line[*input_line_pointer])
- temp = arg; /* Default value from pseudo-op table */
- else
- temp = get_absolute_expression ();
-
- if (temp > max_alignment)
- {
- as_bad ("Alignment too large: %d. assumed.", temp = max_alignment);
- }
-
- /*
- * For the sparc, `.align (1<<n)' actually means `.align n'
- * so we have to convert it.
- */
- if (temp != 0)
- {
- for (i = 0; (temp & 1) == 0; temp >>= 1, ++i)
- ;
- }
- if (temp != 1)
- as_bad ("Alignment not a power of 2");
-
- temp = i;
- if (*input_line_pointer == ',')
- {
- input_line_pointer++;
- temp_fill = get_absolute_expression ();
- }
- else if (now_seg != data_section && now_seg != bss_section)
- temp_fill = NOP_OPCODE;
- else
- temp_fill = 0;
- /* Only make a frag if we HAVE to. . . */
- if (temp && !need_pass_2)
- frag_align (temp, (int) temp_fill);
-
- demand_empty_rest_of_line ();
- } /* s_align_bytes() */
-
- /* For machines where ".align 4" means align to 2**4 boundary. */
- void
- s_align_ptwo ()
- {
- register int temp;
- register long temp_fill;
- long max_alignment = 15;
-
- temp = get_absolute_expression ();
- if (temp > max_alignment)
- as_bad ("Alignment too large: %d. assumed.", temp = max_alignment);
- else if (temp < 0)
- {
- as_bad ("Alignment negative. 0 assumed.");
- temp = 0;
- }
- if (*input_line_pointer == ',')
- {
- input_line_pointer++;
- temp_fill = get_absolute_expression ();
- }
- /* @@ Fix this right for BFD! */
- else if (now_seg != data_section && now_seg != bss_section)
- temp_fill = NOP_OPCODE;
- else
- temp_fill = 0;
- /* Only make a frag if we HAVE to. . . */
- if (temp && !need_pass_2)
- frag_align (temp, (int) temp_fill);
-
- record_alignment (now_seg, temp);
-
- demand_empty_rest_of_line ();
- } /* s_align_ptwo() */
-
- void
- s_comm ()
- {
- register char *name;
- register char c;
- register char *p;
- register int temp;
- register symbolS *symbolP;
-
- name = input_line_pointer;
- c = get_symbol_end ();
- /* just after name is now '\0' */
- p = input_line_pointer;
- *p = c;
- SKIP_WHITESPACE ();
- if (*input_line_pointer != ',')
- {
- as_bad ("Expected comma after symbol-name: rest of line ignored.");
- ignore_rest_of_line ();
- return;
- }
- input_line_pointer++; /* skip ',' */
- if ((temp = get_absolute_expression ()) < 0)
- {
- as_warn (".COMMon length (%d.) <0! Ignored.", temp);
- ignore_rest_of_line ();
- return;
- }
- *p = 0;
- symbolP = symbol_find_or_make (name);
- *p = c;
- if (S_IS_DEFINED (symbolP))
- {
- as_bad ("Ignoring attempt to re-define symbol");
- ignore_rest_of_line ();
- return;
- }
- if (S_GET_VALUE (symbolP))
- {
- if (S_GET_VALUE (symbolP) != temp)
- as_bad ("Length of .comm \"%s\" is already %d. Not changed to %d.",
- S_GET_NAME (symbolP),
- S_GET_VALUE (symbolP),
- temp);
- }
- else
- {
- S_SET_VALUE (symbolP, temp);
- S_SET_EXTERNAL (symbolP);
- }
- #ifdef OBJ_VMS
- if ( (!temp) || !flagseen['1'])
- S_GET_OTHER(symbolP) = const_flag;
- #endif /* not OBJ_VMS */
- know (symbolP->sy_frag == &zero_address_frag);
- demand_empty_rest_of_line ();
- } /* s_comm() */
-
- void
- s_data ()
- {
- register int temp;
-
- temp = get_absolute_expression ();
- #ifdef BFD_ASSEMBLER
- subseg_set (data_section, (subsegT) temp);
- #else
- subseg_new (data_section, (subsegT) temp);
- #endif
-
- #ifdef OBJ_VMS
- const_flag = 0;
- #endif
- demand_empty_rest_of_line ();
- }
-
- void
- s_app_file ()
- {
- register char *s;
- int length;
-
- /* Some assemblers tolerate immediately following '"' */
- if ((s = demand_copy_string (&length)) != 0)
- {
- new_logical_line (s, -1);
- demand_empty_rest_of_line ();
- }
- #ifdef OBJ_COFF
- c_dot_file_symbol (s);
- #endif /* OBJ_COFF */
- } /* s_app_file() */
-
- void
- s_fill ()
- {
- long temp_repeat = 0;
- long temp_size = 1;
- register long temp_fill = 0;
- char *p;
-
-
- temp_repeat = get_absolute_expression ();
- if (*input_line_pointer == ',')
- {
- input_line_pointer++;
- temp_size = get_absolute_expression ();
- if (*input_line_pointer == ',')
- {
- input_line_pointer++;
- temp_fill = get_absolute_expression ();
- }
- }
- /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */
- #define BSD_FILL_SIZE_CROCK_8 (8)
- if (temp_size > BSD_FILL_SIZE_CROCK_8)
- {
- as_warn (".fill size clamped to %d.", BSD_FILL_SIZE_CROCK_8);
- temp_size = BSD_FILL_SIZE_CROCK_8;
- }
- if (temp_size < 0)
- {
- as_warn ("Size negative: .fill ignored.");
- temp_size = 0;
- }
- else if (temp_repeat <= 0)
- {
- as_warn ("Repeat < 0, .fill ignored");
- temp_size = 0;
- }
-
- if (temp_size && !need_pass_2)
- {
- p = frag_var (rs_fill, (int) temp_size, (int) temp_size, (relax_substateT) 0, (symbolS *) 0, temp_repeat, (char *) 0);
- memset (p, 0, (int) temp_size);
- /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX
- * flavoured AS. The following bizzare behaviour is to be
- * compatible with above. I guess they tried to take up to 8
- * bytes from a 4-byte expression and they forgot to sign
- * extend. Un*x Sux. */
- #define BSD_FILL_SIZE_CROCK_4 (4)
- md_number_to_chars (p, temp_fill,
- (temp_size > BSD_FILL_SIZE_CROCK_4
- ? BSD_FILL_SIZE_CROCK_4
- : (int) temp_size));
- /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes)
- * but emits no error message because it seems a legal thing to do.
- * It is a degenerate case of .fill but could be emitted by a compiler.
- */
- }
- demand_empty_rest_of_line ();
- }
-
- void
- s_globl ()
- {
- register char *name;
- register int c;
- register symbolS *symbolP;
-
- do
- {
- name = input_line_pointer;
- c = get_symbol_end ();
- symbolP = symbol_find_or_make (name);
- *input_line_pointer = c;
- SKIP_WHITESPACE ();
- S_SET_EXTERNAL (symbolP);
- if (c == ',')
- {
- input_line_pointer++;
- SKIP_WHITESPACE ();
- if (*input_line_pointer == '\n')
- c = '\n';
- }
- }
- while (c == ',');
- demand_empty_rest_of_line ();
- } /* s_globl() */
-
- void
- s_lcomm (needs_align)
- /* 1 if this was a ".bss" directive, which may require a 3rd argument
- (alignment); 0 if it was an ".lcomm" (2 args only) */
- int needs_align;
- {
- register char *name;
- register char c;
- register char *p;
- register int temp;
- register symbolS *symbolP;
- segT current_seg = now_seg;
- subsegT current_subseg = now_subseg;
- const int max_alignment = 15;
- int align = 0;
- segT bss_seg = bss_section;
-
- name = input_line_pointer;
- c = get_symbol_end ();
- p = input_line_pointer;
- *p = c;
- SKIP_WHITESPACE ();
- if (*input_line_pointer != ',')
- {
- as_bad ("Expected comma after name");
- ignore_rest_of_line ();
- return;
- }
-
- ++input_line_pointer;
-
- if (*input_line_pointer == '\n')
- {
- as_bad ("Missing size expression");
- return;
- }
-
- if ((temp = get_absolute_expression ()) < 0)
- {
- as_warn ("BSS length (%d.) <0! Ignored.", temp);
- ignore_rest_of_line ();
- return;
- }
-
- #ifdef TC_MIPS
- #ifdef OBJ_ECOFF
- /* For MIPS ECOFF, small objects are put in .sbss. */
- if (temp <= bfd_get_gp_size (stdoutput))
- bss_seg = subseg_new (".sbss", 1);
- #endif
- #endif
-
- if (needs_align)
- {
- align = 0;
- SKIP_WHITESPACE ();
- if (*input_line_pointer != ',')
- {
- as_bad ("Expected comma after size");
- ignore_rest_of_line ();
- return;
- }
- input_line_pointer++;
- SKIP_WHITESPACE ();
- if (*input_line_pointer == '\n')
- {
- as_bad ("Missing alignment");
- return;
- }
- align = get_absolute_expression ();
- if (align > max_alignment)
- {
- align = max_alignment;
- as_warn ("Alignment too large: %d. assumed.", align);
- }
- else if (align < 0)
- {
- align = 0;
- as_warn ("Alignment negative. 0 assumed.");
- }
- record_alignment (bss_seg, align);
- } /* if needs align */
-
- *p = 0;
- symbolP = symbol_find_or_make (name);
- *p = c;
-
- if (
- #if defined(OBJ_AOUT) | defined(OBJ_BOUT)
- S_GET_OTHER (symbolP) == 0 &&
- S_GET_DESC (symbolP) == 0 &&
- #endif /* OBJ_AOUT or OBJ_BOUT */
- (S_GET_SEGMENT (symbolP) == bss_seg
- || (!S_IS_DEFINED (symbolP) && S_GET_VALUE (symbolP) == 0)))
- {
- char *p;
-
- #ifdef BFD_ASSEMBLER
- subseg_set (bss_seg, 1);
- #else
- subseg_new (bss_seg, 1);
- #endif
-
- if (align)
- frag_align (align, 0);
- /* detach from old frag */
- if (S_GET_SEGMENT (symbolP) == bss_seg)
- symbolP->sy_frag->fr_symbol = NULL;
-
- symbolP->sy_frag = frag_now;
- p = frag_var (rs_org, 1, 1, (relax_substateT)0, symbolP,
- temp, (char *)0);
- *p = 0;
-
- S_SET_SEGMENT (symbolP, bss_seg);
-
- #ifdef OBJ_COFF
- /* The symbol may already have been created with a preceding
- ".globl" directive -- be careful not to step on storage class
- in that case. Otherwise, set it to static. */
- if (S_GET_STORAGE_CLASS (symbolP) != C_EXT)
- {
- S_SET_STORAGE_CLASS (symbolP, C_STAT);
- }
- #endif /* OBJ_COFF */
- }
- else
- {
- as_bad ("Ignoring attempt to re-define symbol %s.", name);
- }
-
- #ifdef BFD_ASSEMBLER
- subseg_set (current_seg, current_subseg);
- #else
- subseg_new (current_seg, current_subseg);
- #endif
-
- demand_empty_rest_of_line ();
- } /* s_lcomm() */
-
- void
- s_long ()
- {
- cons (4);
- }
-
- void
- s_int ()
- {
- cons (4);
- }
-
- void
- s_lsym ()
- {
- register char *name;
- register char c;
- register char *p;
- register segT segment;
- expressionS exp;
- register symbolS *symbolP;
-
- /* we permit ANY defined expression: BSD4.2 demands constants */
- name = input_line_pointer;
- c = get_symbol_end ();
- p = input_line_pointer;
- *p = c;
- SKIP_WHITESPACE ();
- if (*input_line_pointer != ',')
- {
- *p = 0;
- as_bad ("Expected comma after name \"%s\"", name);
- *p = c;
- ignore_rest_of_line ();
- return;
- }
- input_line_pointer++;
- segment = expression (&exp);
- if (segment != absolute_section
- && segment != reg_section
- && ! SEG_NORMAL (segment))
- {
- as_bad ("Bad expression: %s", segment_name (segment));
- ignore_rest_of_line ();
- return;
- }
- *p = 0;
- symbolP = symbol_find_or_make (name);
-
- /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 &&
- symbolP->sy_desc == 0) out of this test because coff doesn't have
- those fields, and I can't see when they'd ever be tripped. I
- don't think I understand why they were here so I may have
- introduced a bug. As recently as 1.37 didn't have this test
- anyway. xoxorich. */
-
- if (S_GET_SEGMENT (symbolP) == undefined_section
- && S_GET_VALUE (symbolP) == 0)
- {
- /* The name might be an undefined .global symbol; be sure to
- keep the "external" bit. */
- S_SET_SEGMENT (symbolP, segment);
- S_SET_VALUE (symbolP, (valueT) (exp.X_add_number));
- }
- else
- {
- as_bad ("Symbol %s already defined", name);
- }
- *p = c;
- demand_empty_rest_of_line ();
- } /* s_lsym() */
-
- void
- s_org ()
- {
- register segT segment;
- expressionS exp;
- register long temp_fill;
- register char *p;
- /* Don't believe the documentation of BSD 4.2 AS. There is no such
- thing as a sub-segment-relative origin. Any absolute origin is
- given a warning, then assumed to be segment-relative. Any
- segmented origin expression ("foo+42") had better be in the right
- segment or the .org is ignored.
-
- BSD 4.2 AS warns if you try to .org backwards. We cannot because
- we never know sub-segment sizes when we are reading code. BSD
- will crash trying to emit negative numbers of filler bytes in
- certain .orgs. We don't crash, but see as-write for that code.
-
- Don't make frag if need_pass_2==1. */
- segment = get_known_segmented_expression (&exp);
- if (*input_line_pointer == ',')
- {
- input_line_pointer++;
- temp_fill = get_absolute_expression ();
- }
- else
- temp_fill = 0;
- if (!need_pass_2)
- {
- if (segment != now_seg && segment != absolute_section)
- as_bad ("Invalid segment \"%s\". Segment \"%s\" assumed.",
- segment_name (segment), segment_name (now_seg));
- p = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp.X_add_symbol,
- exp.X_add_number, (char *) 0);
- *p = temp_fill;
- } /* if (ok to make frag) */
- demand_empty_rest_of_line ();
- } /* s_org() */
-
- void
- s_set ()
- {
- register char *name;
- register char delim;
- register char *end_name;
- register symbolS *symbolP;
-
- /*
- * Especial apologies for the random logic:
- * this just grew, and could be parsed much more simply!
- * Dean in haste.
- */
- name = input_line_pointer;
- delim = get_symbol_end ();
- end_name = input_line_pointer;
- *end_name = delim;
- SKIP_WHITESPACE ();
-
- if (*input_line_pointer != ',')
- {
- *end_name = 0;
- as_bad ("Expected comma after name \"%s\"", name);
- *end_name = delim;
- ignore_rest_of_line ();
- return;
- }
-
- input_line_pointer++;
- *end_name = 0;
-
- if (name[0] == '.' && name[1] == '\0')
- {
- /* Turn '. = mumble' into a .org mumble */
- register segT segment;
- expressionS exp;
- register char *ptr;
-
- segment = get_known_segmented_expression (&exp);
-
- if (!need_pass_2)
- {
- if (segment != now_seg && segment != absolute_section)
- as_bad ("Invalid segment \"%s\". Segment \"%s\" assumed.",
- segment_name (segment),
- segment_name (now_seg));
- ptr = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp.X_add_symbol,
- exp.X_add_number, (char *) 0);
- *ptr = 0;
- } /* if (ok to make frag) */
-
- *end_name = delim;
- return;
- }
-
- if ((symbolP = symbol_find (name)) == NULL
- && (symbolP = md_undefined_symbol (name)) == NULL)
- {
- symbolP = symbol_new (name, undefined_section, 0, &zero_address_frag);
- #ifdef OBJ_COFF
- /* "set" symbols are local unless otherwise specified. */
- SF_SET_LOCAL (symbolP);
- #endif /* OBJ_COFF */
-
- } /* make a new symbol */
-
- symbol_table_insert (symbolP);
-
- *end_name = delim;
- pseudo_set (symbolP);
- demand_empty_rest_of_line ();
- } /* s_set() */
-
- void
- s_space (mult)
- int mult;
- {
- long temp_repeat;
- register long temp_fill;
- register char *p;
-
- /* Just like .fill, but temp_size = 1 */
- if (get_absolute_expression_and_terminator (&temp_repeat) == ',')
- {
- temp_fill = get_absolute_expression ();
- }
- else
- {
- input_line_pointer--; /* Backup over what was not a ','. */
- temp_fill = 0;
- }
- if (mult)
- {
- temp_repeat *= mult;
- }
- if (temp_repeat <= 0)
- {
- as_warn ("Repeat < 0, .space ignored");
- ignore_rest_of_line ();
- return;
- }
- if (!need_pass_2)
- {
- p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0,
- temp_repeat, (char *) 0);
- *p = temp_fill;
- }
- demand_empty_rest_of_line ();
- } /* s_space() */
-
- void
- s_text ()
- {
- register int temp;
-
- temp = get_absolute_expression ();
- #ifdef BFD_ASSEMBLER
- subseg_set (text_section, (subsegT) temp);
- #else
- subseg_new (text_section, (subsegT) temp);
- #endif
- demand_empty_rest_of_line ();
- } /* s_text() */
-
-
- void
- demand_empty_rest_of_line ()
- {
- SKIP_WHITESPACE ();
- if (is_end_of_line[*input_line_pointer])
- {
- input_line_pointer++;
- }
- else
- {
- ignore_rest_of_line ();
- }
- /* Return having already swallowed end-of-line. */
- } /* Return pointing just after end-of-line. */
-
- void
- ignore_rest_of_line () /* For suspect lines: gives warning. */
- {
- if (!is_end_of_line[*input_line_pointer])
- {
- if (isprint (*input_line_pointer))
- as_bad ("Rest of line ignored. First ignored character is `%c'.",
- *input_line_pointer);
- else
- as_bad ("Rest of line ignored. First ignored character valued 0x%x.",
- *input_line_pointer);
- while (input_line_pointer < buffer_limit
- && !is_end_of_line[*input_line_pointer])
- {
- input_line_pointer++;
- }
- }
- input_line_pointer++; /* Return pointing just after end-of-line. */
- know (is_end_of_line[input_line_pointer[-1]]);
- }
-
- /*
- * pseudo_set()
- *
- * In: Pointer to a symbol.
- * Input_line_pointer->expression.
- *
- * Out: Input_line_pointer->just after any whitespace after expression.
- * Tried to set symbol to value of expression.
- * Will change symbols type, value, and frag;
- * May set need_pass_2 == 1.
- */
- void
- pseudo_set (symbolP)
- symbolS *symbolP;
- {
- expressionS exp;
- register segT segment;
- #if defined(OBJ_AOUT) | defined(OBJ_BOUT)
- int ext;
- #endif /* OBJ_AOUT or OBJ_BOUT */
-
- know (symbolP); /* NULL pointer is logic error. */
- #if defined(OBJ_AOUT) | defined(OBJ_BOUT)
- /* @@ Fix this right for BFD. */
- ext = S_IS_EXTERNAL (symbolP);
- #endif /* OBJ_AOUT or OBJ_BOUT */
-
- if ((segment = expression (&exp)) == absent_section)
- {
- as_bad ("Missing expression: absolute 0 assumed");
- exp.X_seg = absolute_section;
- exp.X_add_number = 0;
- }
-
- if (segment == reg_section)
- {
- S_SET_SEGMENT (symbolP, reg_section);
- S_SET_VALUE (symbolP, exp.X_add_number);
- symbolP->sy_frag = &zero_address_frag;
- }
- else if (segment == big_section)
- {
- as_bad ("%s number invalid. Absolute 0 assumed.",
- exp.X_add_number > 0 ? "Bignum" : "Floating-Point");
- S_SET_SEGMENT (symbolP, absolute_section);
- #if defined(OBJ_AOUT) | defined(OBJ_BOUT)
- /* @@ Fix this right for BFD. */
- ext ? S_SET_EXTERNAL (symbolP) :
- S_CLEAR_EXTERNAL (symbolP);
- #endif /* OBJ_AOUT or OBJ_BOUT */
- S_SET_VALUE (symbolP, 0);
- symbolP->sy_frag = &zero_address_frag;
- }
- else if (segment == absent_section)
- {
- as_warn ("No expression: Using absolute 0");
- S_SET_SEGMENT (symbolP, absolute_section);
- #if defined(OBJ_AOUT) | defined(OBJ_BOUT)
- /* @@ Fix this right for BFD. */
- ext ? S_SET_EXTERNAL (symbolP) :
- S_CLEAR_EXTERNAL (symbolP);
- #endif /* OBJ_AOUT or OBJ_BOUT */
- S_SET_VALUE (symbolP, 0);
- symbolP->sy_frag = &zero_address_frag;
- }
- else if (segment == diff_section)
- {
- if (exp.X_add_symbol && exp.X_subtract_symbol
- && (S_GET_SEGMENT (exp.X_add_symbol) ==
- S_GET_SEGMENT (exp.X_subtract_symbol)))
- {
- if (exp.X_add_symbol->sy_frag == exp.X_subtract_symbol->sy_frag)
- {
- exp.X_add_number += S_GET_VALUE (exp.X_add_symbol) -
- S_GET_VALUE (exp.X_subtract_symbol);
- goto abs;
- }
- as_bad ("Invalid expression: separation between symbols `%s'",
- S_GET_NAME (exp.X_add_symbol));
- as_bad (" and `%s' may not be constant",
- S_GET_NAME (exp.X_subtract_symbol));
- need_pass_2++;
- }
- else
- {
- as_bad ("Complex expression. Absolute segment assumed.");
- goto abs;
- }
- }
- else if (segment == absolute_section)
- {
- abs:
- S_SET_SEGMENT (symbolP, absolute_section);
- #if defined(OBJ_AOUT) | defined(OBJ_BOUT)
- /* @@ Fix this right for BFD. */
- ext ? S_SET_EXTERNAL (symbolP) :
- S_CLEAR_EXTERNAL (symbolP);
- #endif /* OBJ_AOUT or OBJ_BOUT */
- S_SET_VALUE (symbolP, exp.X_add_number);
- symbolP->sy_frag = &zero_address_frag;
- }
- else if (segment == pass1_section)
- {
- symbolP->sy_forward = exp.X_add_symbol;
- as_bad ("Unknown expression");
- know (need_pass_2 == 1);
- }
- else if (segment == undefined_section)
- {
- symbolP->sy_forward = exp.X_add_symbol;
- }
- else
- {
- #ifndef BFD_ASSEMBLER
- #ifndef MANY_SEGMENTS
- switch (segment)
- {
- case SEG_DATA:
- case SEG_TEXT:
- case SEG_BSS:
- break;
-
- default:
- as_fatal ("failed sanity check.");
- } /* switch on segment */
- #endif
- #endif
- S_SET_SEGMENT (symbolP, segment);
- #if defined(OBJ_AOUT) | defined(OBJ_BOUT)
- /* @@ Fix this right for BFD! */
- if (ext)
- {
- S_SET_EXTERNAL (symbolP);
- }
- else
- {
- S_CLEAR_EXTERNAL (symbolP);
- } /* if external */
- #endif /* OBJ_AOUT or OBJ_BOUT */
-
- S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (exp.X_add_symbol));
- symbolP->sy_frag = exp.X_add_symbol->sy_frag;
- }
- }
-
- /*
- * cons()
- *
- * CONStruct more frag of .bytes, or .words etc.
- * Should need_pass_2 be 1 then emit no frag(s).
- * This understands EXPRESSIONS, as opposed to big_cons().
- *
- * Bug (?)
- *
- * This has a split personality. We use expression() to read the
- * value. We can detect if the value won't fit in a byte or word.
- * But we can't detect if expression() discarded significant digits
- * in the case of a long. Not worth the crocks required to fix it.
- */
-
- /* worker to do .byte etc statements */
- /* clobbers input_line_pointer, checks */
- /* end-of-line. */
- void
- cons (nbytes)
- register unsigned int nbytes; /* 1=.byte, 2=.word, 4=.long */
- {
- register char c;
- register long mask; /* High-order bits we will left-truncate, */
- /* but includes sign bit also. */
- register long get; /* what we get */
- register long use; /* get after truncation. */
- register long unmask; /* what bits we will store */
- register char *p;
- register segT segment;
- expressionS exp;
-
- /*
- * Input_line_pointer->1st char after pseudo-op-code and could legally
- * be a end-of-line. (Or, less legally an eof - which we cope with.)
- */
- /* JF << of >= number of bits in the object is undefined. In particular
- SPARC (Sun 4) has problems */
-
- if (nbytes >= sizeof (long))
- {
- mask = 0;
- }
- else
- {
- mask = ~0 << (BITS_PER_CHAR * nbytes); /* Don't store these bits. */
- } /* bigger than a long */
-
- unmask = ~mask; /* Do store these bits. */
-
- #ifdef NEVER
- "Do this mod if you want every overflow check to assume SIGNED 2's complement data.";
- mask = ~(unmask >> 1); /* Includes sign bit now. */
- #endif
-
- /*
- * The following awkward logic is to parse ZERO or more expressions,
- * comma seperated. Recall an expression includes its leading &
- * trailing blanks. We fake a leading ',' if there is (supposed to
- * be) a 1st expression, and keep demanding 1 expression for each ','.
- */
- if (is_it_end_of_statement ())
- {
- c = 0; /* Skip loop. */
- input_line_pointer++; /* Matches end-of-loop 'correction'. */
- }
- else
- {
- c = ',';
- } /* if the end else fake it */
-
- /* Do loop. */
- while (c == ',')
- {
- #ifdef WANT_BITFIELDS
- unsigned int bits_available = BITS_PER_CHAR * nbytes;
- /* used for error messages and rescanning */
- char *hold = input_line_pointer;
- #endif /* WANT_BITFIELDS */
- #ifdef MRI
- if (*input_line_pointer == '\'')
- {
- /* An MRI style string, cut into as many bytes as will fit
- into a nbyte chunk, left justify if necessary, and sepatate
- with commas so we can try again later */
- int scan = 0;
- unsigned int result = 0;
- input_line_pointer++;
- for (scan = 0; scan < nbytes; scan++)
- {
- if (*input_line_pointer == '\'')
- {
- if (input_line_pointer[1] == '\'')
- {
- input_line_pointer++;
- }
- else
- break;
- }
- result = (result << 8) | (*input_line_pointer++);
- }
-
- /* Left justify */
- while (scan < nbytes)
- {
- result <<= 8;
- scan++;
- }
- /* Create correct expression */
- exp.X_add_symbol = 0;
- exp.X_add_number = result;
- exp.X_seg = segment = absolute_section;
- /* Fake it so that we can read the next char too */
- if (input_line_pointer[0] != '\'' ||
- (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\''))
- {
- input_line_pointer -= 2;
- input_line_pointer[0] = ',';
- input_line_pointer[1] = '\'';
- }
- else
- input_line_pointer++;
-
- }
- else
- #endif
- /* At least scan over the expression. */
- segment = expression (&exp);
-
- #ifdef WANT_BITFIELDS
- /* Some other assemblers, (eg, asm960), allow
- bitfields after ".byte" as w:x,y:z, where w and
- y are bitwidths and x and y are values. They
- then pack them all together. We do a little
- better in that we allow them in words, longs,
- etc. and we'll pack them in target byte order
- for you.
-
- The rules are: pack least significat bit first,
- if a field doesn't entirely fit, put it in the
- next unit. Overflowing the bitfield is
- explicitly *not* even a warning. The bitwidth
- should be considered a "mask".
-
- FIXME-SOMEDAY: If this is considered generally
- useful, this logic should probably be reworked.
- xoxorich. */
-
- if (*input_line_pointer == ':')
- { /* bitfields */
- long value = 0;
-
- for (;;)
- {
- unsigned long width;
-
- if (*input_line_pointer != ':')
- {
- input_line_pointer = hold;
- break;
- } /* next piece is not a bitfield */
-
- /* In the general case, we can't allow
- full expressions with symbol
- differences and such. The relocation
- entries for symbols not defined in this
- assembly would require arbitrary field
- widths, positions, and masks which most
- of our current object formats don't
- support.
-
- In the specific case where a symbol
- *is* defined in this assembly, we
- *could* build fixups and track it, but
- this could lead to confusion for the
- backends. I'm lazy. I'll take any
- SEG_ABSOLUTE. I think that means that
- you can use a previous .set or
- .equ type symbol. xoxorich. */
-
- if (segment == absent_section)
- {
- as_warn ("Using a bit field width of zero.");
- exp.X_add_number = 0;
- segment = absolute_section;
- } /* implied zero width bitfield */
-
- if (segment != absolute_section)
- {
- *input_line_pointer = '\0';
- as_bad ("Field width \"%s\" too complex for a bitfield.\n", hold);
- *input_line_pointer = ':';
- demand_empty_rest_of_line ();
- return;
- } /* too complex */
-
- if ((width = exp.X_add_number) > (BITS_PER_CHAR * nbytes))
- {
- as_warn ("Field width %d too big to fit in %d bytes: truncated to %d bits.",
- width, nbytes, (BITS_PER_CHAR * nbytes));
- width = BITS_PER_CHAR * nbytes;
- } /* too big */
-
- if (width > bits_available)
- {
- /* FIXME-SOMEDAY: backing up and
- reparsing is wasteful */
- input_line_pointer = hold;
- exp.X_add_number = value;
- break;
- } /* won't fit */
-
- hold = ++input_line_pointer; /* skip ':' */
-
- if ((segment = expression (&exp)) != absolute_section)
- {
- char cache = *input_line_pointer;
-
- *input_line_pointer = '\0';
- as_bad ("Field value \"%s\" too complex for a bitfield.\n", hold);
- *input_line_pointer = cache;
- demand_empty_rest_of_line ();
- return;
- } /* too complex */
-
- value |= (~(-1 << width) & exp.X_add_number)
- << ((BITS_PER_CHAR * nbytes) - bits_available);
-
- if ((bits_available -= width) == 0
- || is_it_end_of_statement ()
- || *input_line_pointer != ',')
- {
- break;
- } /* all the bitfields we're gonna get */
-
- hold = ++input_line_pointer;
- segment = expression (&exp);
- } /* forever loop */
-
- exp.X_add_number = value;
- segment = absolute_section;
- } /* if looks like a bitfield */
- #endif /* WANT_BITFIELDS */
-
- if (!need_pass_2)
- { /* Still worthwhile making frags. */
-
- /* Don't call this if we are going to junk this pass anyway! */
- know (segment != pass1_section);
-
- if (segment == diff_section && exp.X_add_symbol == NULL)
- {
- as_bad ("Subtracting symbol \"%s\"(segment\"%s\") is too hard. Absolute segment assumed.",
- S_GET_NAME (exp.X_subtract_symbol),
- segment_name (S_GET_SEGMENT (exp.X_subtract_symbol)));
- segment = absolute_section;
- /* Leave exp . X_add_number alone. */
- }
- p = frag_more (nbytes);
- if (segment == big_section)
- {
- as_bad ("%s number invalid. Absolute 0 assumed.",
- exp.X_add_number > 0 ? "Bignum" : "Floating-Point");
- md_number_to_chars (p, (long) 0, nbytes);
- }
- else if (segment == absent_section)
- {
- as_warn ("0 assumed for missing expression");
- exp.X_add_number = 0;
- know (exp.X_add_symbol == NULL);
- goto abs_sec;
- }
- else if (segment == absolute_section)
- {
- abs_sec:
- get = exp.X_add_number;
- use = get & unmask;
- if ((get & mask) && (get & mask) != mask)
- { /* Leading bits contain both 0s & 1s. */
- as_warn ("Value 0x%x truncated to 0x%x.", get, use);
- }
- md_number_to_chars (p, use, nbytes); /* put bytes in right order. */
- }
- else if (segment == diff_section)
- {
- #ifndef WORKING_DOT_WORD
- if (nbytes == 2)
- {
- struct broken_word *x;
-
- x = (struct broken_word *) xmalloc (sizeof (struct broken_word));
- x->next_broken_word = broken_words;
- broken_words = x;
- x->frag = frag_now;
- x->word_goes_here = p;
- x->dispfrag = 0;
- x->add = exp.X_add_symbol;
- x->sub = exp.X_subtract_symbol;
- x->addnum = exp.X_add_number;
- x->added = 0;
- new_broken_words++;
- goto after_switch;
- }
- #endif
- goto defalt;
- }
- else
- /* undefined_section, others */
- {
- defalt:
- md_number_to_chars (p, (long) 0, nbytes);
- #ifdef BFD_ASSEMBLER
- fix_new (frag_now, p - frag_now->fr_literal, nbytes,
- exp.X_add_symbol, exp.X_subtract_symbol,
- exp.X_add_number, 0,
- /* @@ Should look at CPU word size. */
- BFD_RELOC_32);
- #else
- #ifdef TC_NS32K
- fix_new_ns32k (frag_now, p - frag_now->fr_literal, nbytes,
- exp.X_add_symbol, exp.X_subtract_symbol,
- exp.X_add_number, 0, 0, 2, 0, 0);
- #else
- #if defined(TC_SPARC) || defined(TC_A29K)
- fix_new (frag_now, p - frag_now->fr_literal, nbytes,
- exp.X_add_symbol, exp.X_subtract_symbol,
- exp.X_add_number, 0, RELOC_32);
- #else
- #if defined(TC_H8300)
- fix_new (frag_now, p - frag_now->fr_literal, nbytes,
- exp.X_add_symbol, exp.X_subtract_symbol,
- exp.X_add_number, 0, R_RELWORD);
-
- #else
- #ifdef NO_RELOC
- fix_new (frag_now, p - frag_now->fr_literal, nbytes,
- exp.X_add_symbol, exp.X_subtract_symbol,
- exp.X_add_number, 0, NO_RELOC);
- #else
- fix_new (frag_now, p - frag_now->fr_literal, nbytes,
- exp.X_add_symbol, exp.X_subtract_symbol,
- exp.X_add_number, 0, 0);
- #endif /* NO_RELOC */
- #endif /* tc_h8300 */
- #endif /* tc_sparc|tc_a29k */
- #endif /* TC_NS32K */
- #endif /* BFD_ASSEMBLER */
- } /* switch(segment) */
- after_switch:
- ;
- } /* if (!need_pass_2) */
- c = *input_line_pointer++;
- } /* while(c==',') */
- input_line_pointer--; /* Put terminator back into stream. */
- demand_empty_rest_of_line ();
- } /* cons() */
-
- /*
- * big_cons()
- *
- * CONStruct more frag(s) of .quads, or .octa etc.
- * Makes 0 or more new frags.
- * If need_pass_2 == 1, generate no frag.
- * This understands only bignums, not expressions. Cons() understands
- * expressions.
- *
- * Constants recognised are '0...'(octal) '0x...'(hex) '...'(decimal).
- *
- * This creates objects with struct obstack_control objs, destroying
- * any context objs held about a partially completed object. Beware!
- *
- *
- * I think it sucks to have 2 different types of integers, with 2
- * routines to read them, store them etc.
- * It would be nicer to permit bignums in expressions and only
- * complain if the result overflowed. However, due to "efficiency"...
- */
- /* worker to do .quad etc statements */
- /* clobbers input_line_pointer, checks */
- /* end-of-line. */
- /* 8=.quad 16=.octa ... */
-
- void
- big_cons (nbytes)
- register int nbytes;
- {
- register char c; /* input_line_pointer->c. */
- register int radix;
- register long length; /* Number of chars in an object. */
- register int digit; /* Value of 1 digit. */
- register int carry; /* For multi-precision arithmetic. */
- register int work; /* For multi-precision arithmetic. */
- register char *p; /* For multi-precision arithmetic. */
-
- extern const char hex_value[]; /* In hex_value.c. */
-
- /*
- * The following awkward logic is to parse ZERO or more strings,
- * comma seperated. Recall an expression includes its leading &
- * trailing blanks. We fake a leading ',' if there is (supposed to
- * be) a 1st expression, and keep demanding 1 expression for each ','.
- */
- if (is_it_end_of_statement ())
- {
- c = 0; /* Skip loop. */
- }
- else
- {
- c = ','; /* Do loop. */
- --input_line_pointer;
- }
- while (c == ',')
- {
- ++input_line_pointer;
- SKIP_WHITESPACE ();
- c = *input_line_pointer;
- /* C contains 1st non-blank character of what we hope is a number. */
- if (c == '0')
- {
- c = *++input_line_pointer;
- if (c == 'x' || c == 'X')
- {
- c = *++input_line_pointer;
- radix = 16;
- }
- else
- {
- radix = 8;
- }
- }
- else
- {
- radix = 10;
- }
- /*
- * This feature (?) is here to stop people worrying about
- * mysterious zero constants: which is what they get when
- * they completely omit digits.
- */
- if (hex_value[c] >= radix)
- {
- as_bad ("Missing digits. 0 assumed.");
- }
- bignum_high = bignum_low - 1; /* Start constant with 0 chars. */
- for (; (digit = hex_value[c]) < radix; c = *++input_line_pointer)
- {
- /* Multiply existing number by radix, then add digit. */
- carry = digit;
- for (p = bignum_low; p <= bignum_high; p++)
- {
- work = (*p & MASK_CHAR) * radix + carry;
- *p = work & MASK_CHAR;
- carry = work >> BITS_PER_CHAR;
- }
- if (carry)
- {
- grow_bignum ();
- *bignum_high = carry & MASK_CHAR;
- know ((carry & ~MASK_CHAR) == 0);
- }
- }
- length = bignum_high - bignum_low + 1;
- if (length > nbytes)
- {
- as_warn ("Most significant bits truncated in integer constant.");
- }
- else
- {
- register long leading_zeroes;
-
- for (leading_zeroes = nbytes - length;
- leading_zeroes;
- leading_zeroes--)
- {
- grow_bignum ();
- *bignum_high = 0;
- }
- }
- if (!need_pass_2)
- {
- char *src = bignum_low;
- p = frag_more (nbytes);
- if (target_big_endian)
- {
- int i;
- for (i = nbytes - 1; i >= 0; i--)
- p[i] = *src++;
- }
- else
- bcopy (bignum_low, p, (int) nbytes);
- }
- /* C contains character after number. */
- SKIP_WHITESPACE ();
- c = *input_line_pointer;
- /* C contains 1st non-blank character after number. */
- }
- demand_empty_rest_of_line ();
- } /* big_cons() */
-
- /* Extend bignum by 1 char. */
- static void
- grow_bignum ()
- {
- register long length;
-
- bignum_high++;
- if (bignum_high >= bignum_limit)
- {
- length = bignum_limit - bignum_low;
- bignum_low = xrealloc (bignum_low, length + length);
- bignum_high = bignum_low + length;
- bignum_limit = bignum_low + length + length;
- }
- } /* grow_bignum(); */
-
- /*
- * float_cons()
- *
- * CONStruct some more frag chars of .floats .ffloats etc.
- * Makes 0 or more new frags.
- * If need_pass_2 == 1, no frags are emitted.
- * This understands only floating literals, not expressions. Sorry.
- *
- * A floating constant is defined by atof_generic(), except it is preceded
- * by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its
- * reading, I decided to be incompatible. This always tries to give you
- * rounded bits to the precision of the pseudo-op. Former AS did premature
- * truncatation, restored noisy bits instead of trailing 0s AND gave you
- * a choice of 2 flavours of noise according to which of 2 floating-point
- * scanners you directed AS to use.
- *
- * In: input_line_pointer->whitespace before, or '0' of flonum.
- *
- */
-
- void /* JF was static, but can't be if VAX.C is goning to use it */
- float_cons (float_type) /* Worker to do .float etc statements. */
- /* Clobbers input_line-pointer, checks end-of-line. */
- register int float_type; /* 'f':.ffloat ... 'F':.float ... */
- {
- register char *p;
- register char c;
- int length; /* Number of chars in an object. */
- register char *err; /* Error from scanning floating literal. */
- char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT];
-
- /*
- * The following awkward logic is to parse ZERO or more strings,
- * comma seperated. Recall an expression includes its leading &
- * trailing blanks. We fake a leading ',' if there is (supposed to
- * be) a 1st expression, and keep demanding 1 expression for each ','.
- */
- if (is_it_end_of_statement ())
- {
- c = 0; /* Skip loop. */
- ++input_line_pointer; /*->past termintor. */
- }
- else
- {
- c = ','; /* Do loop. */
- }
- while (c == ',')
- {
- /* input_line_pointer->1st char of a flonum (we hope!). */
- SKIP_WHITESPACE ();
- /* Skip any 0{letter} that may be present. Don't even check if the
- * letter is legal. Someone may invent a "z" format and this routine
- * has no use for such information. Lusers beware: you get
- * diagnostics if your input is ill-conditioned.
- */
-
- if (input_line_pointer[0] == '0' && isalpha (input_line_pointer[1]))
- input_line_pointer += 2;
-
- err = md_atof (float_type, temp, &length);
- know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT);
- know (length > 0);
- if (err && *err)
- {
- as_bad ("Bad floating literal: %s", err);
- ignore_rest_of_line ();
- /* Input_line_pointer->just after end-of-line. */
- c = 0; /* Break out of loop. */
- }
- else
- {
- if (!need_pass_2)
- {
- p = frag_more (length);
- bcopy (temp, p, length);
- }
- SKIP_WHITESPACE ();
- c = *input_line_pointer++;
- /* C contains 1st non-white character after number. */
- /* input_line_pointer->just after terminator (c). */
- }
- }
- --input_line_pointer; /*->terminator (is not ','). */
- demand_empty_rest_of_line ();
- } /* float_cons() */
-
- /*
- * stringer()
- *
- * We read 0 or more ',' seperated, double-quoted strings.
- *
- * Caller should have checked need_pass_2 is FALSE because we don't check it.
- */
-
-
- void
- stringer (append_zero) /* Worker to do .ascii etc statements. */
- /* Checks end-of-line. */
- register int append_zero; /* 0: don't append '\0', else 1 */
- {
- register unsigned int c;
-
- /*
- * The following awkward logic is to parse ZERO or more strings,
- * comma seperated. Recall a string expression includes spaces
- * before the opening '\"' and spaces after the closing '\"'.
- * We fake a leading ',' if there is (supposed to be)
- * a 1st, expression. We keep demanding expressions for each
- * ','.
- */
- if (is_it_end_of_statement ())
- {
- c = 0; /* Skip loop. */
- ++input_line_pointer; /* Compensate for end of loop. */
- }
- else
- {
- c = ','; /* Do loop. */
- }
- while (c == ',' || c == '<' || c == '"')
- {
- SKIP_WHITESPACE ();
- switch (*input_line_pointer)
- {
- case '\"':
- ++input_line_pointer; /*->1st char of string. */
- while (is_a_char (c = next_char_of_string ()))
- {
- FRAG_APPEND_1_CHAR (c);
- }
- if (append_zero)
- {
- FRAG_APPEND_1_CHAR (0);
- }
- know (input_line_pointer[-1] == '\"');
- break;
- case '<':
- input_line_pointer++;
- c = get_single_number ();
- FRAG_APPEND_1_CHAR (c);
- if (*input_line_pointer != '>')
- {
- as_bad ("Expected <nn>");
- }
- input_line_pointer++;
- break;
- case ',':
- input_line_pointer++;
- break;
- }
- SKIP_WHITESPACE ();
- c = *input_line_pointer;
- }
-
- demand_empty_rest_of_line ();
- } /* stringer() */
-
- /* FIXME-SOMEDAY: I had trouble here on characters with the
- high bits set. We'll probably also have trouble with
- multibyte chars, wide chars, etc. Also be careful about
- returning values bigger than 1 byte. xoxorich. */
-
- unsigned int
- next_char_of_string ()
- {
- register unsigned int c;
-
- c = *input_line_pointer++ & CHAR_MASK;
- switch (c)
- {
- case '\"':
- c = NOT_A_CHAR;
- break;
-
- case '\\':
- switch (c = *input_line_pointer++)
- {
- case 'b':
- c = '\b';
- break;
-
- case 'f':
- c = '\f';
- break;
-
- case 'n':
- c = '\n';
- break;
-
- case 'r':
- c = '\r';
- break;
-
- case 't':
- c = '\t';
- break;
-
- #ifdef BACKSLASH_V
- case 'v':
- c = '\013';
- break;
- #endif
-
- case '\\':
- case '"':
- break; /* As itself. */
-
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9':
- {
- long number;
-
- for (number = 0; isdigit (c); c = *input_line_pointer++)
- {
- number = number * 8 + c - '0';
- }
- c = number & 0xff;
- }
- --input_line_pointer;
- break;
-
- case '\n':
- /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */
- as_warn ("Unterminated string: Newline inserted.");
- c = '\n';
- break;
-
- default:
-
- #ifdef ONLY_STANDARD_ESCAPES
- as_bad ("Bad escaped character in string, '?' assumed");
- c = '?';
- #endif /* ONLY_STANDARD_ESCAPES */
-
- break;
- } /* switch on escaped char */
- break;
-
- default:
- break;
- } /* switch on char */
- return (c);
- } /* next_char_of_string() */
-
- static segT
- get_segmented_expression (expP)
- register expressionS *expP;
- {
- register segT retval;
-
- retval = expression (expP);
- if (retval == pass1_section
- || retval == absent_section
- || retval == big_section)
- {
- as_bad ("Expected address expression: absolute 0 assumed");
- retval = expP->X_seg = absolute_section;
- expP->X_add_number = 0;
- expP->X_add_symbol = expP->X_subtract_symbol = 0;
- }
- return (retval); /* SEG_ ABSOLUTE,UNKNOWN,DATA,TEXT,BSS */
- }
-
- static segT
- get_known_segmented_expression (expP)
- register expressionS *expP;
- {
- register segT retval;
- register CONST char *name1;
- register CONST char *name2;
-
- if ((retval = get_segmented_expression (expP)) == undefined_section)
- {
- name1 = expP->X_add_symbol ? S_GET_NAME (expP->X_add_symbol) : "";
- name2 = expP->X_subtract_symbol ?
- S_GET_NAME (expP->X_subtract_symbol) :
- "";
- if (name1 && name2)
- {
- as_warn ("Symbols \"%s\" \"%s\" are undefined: absolute 0 assumed.",
- name1, name2);
- }
- else
- {
- as_warn ("Symbol \"%s\" undefined: absolute 0 assumed.",
- name1 ? name1 : name2);
- }
- retval = expP->X_seg = absolute_section;
- expP->X_add_number = 0;
- expP->X_add_symbol = expP->X_subtract_symbol = NULL;
- }
- know (retval == absolute_section
- || retval == diff_section
- || SEG_NORMAL (retval));
- return (retval);
-
- } /* get_known_segmented_expression() */
-
-
-
- /* static */ long /* JF was static, but can't be if the MD pseudos are to use it */
- get_absolute_expression ()
- {
- expressionS exp;
- register segT s;
-
- if ((s = expression (&exp)) != absolute_section)
- {
- if (s != absent_section)
- {
- as_bad ("Bad Absolute Expression, absolute 0 assumed.");
- }
- exp.X_add_number = 0;
- }
- return (exp.X_add_number);
- }
-
- char /* return terminator */
- get_absolute_expression_and_terminator (val_pointer)
- long *val_pointer; /* return value of expression */
- {
- *val_pointer = get_absolute_expression ();
- return (*input_line_pointer++);
- }
-
- /*
- * demand_copy_C_string()
- *
- * Like demand_copy_string, but return NULL if the string contains any '\0's.
- * Give a warning if that happens.
- */
- char *
- demand_copy_C_string (len_pointer)
- int *len_pointer;
- {
- register char *s;
-
- if ((s = demand_copy_string (len_pointer)) != 0)
- {
- register int len;
-
- for (len = *len_pointer;
- len > 0;
- len--)
- {
- if (*s == 0)
- {
- s = 0;
- len = 1;
- *len_pointer = 0;
- as_bad ("This string may not contain \'\\0\'");
- }
- }
- }
- return (s);
- }
-
- /*
- * demand_copy_string()
- *
- * Demand string, but return a safe (=private) copy of the string.
- * Return NULL if we can't read a string here.
- */
- static char *
- demand_copy_string (lenP)
- int *lenP;
- {
- register unsigned int c;
- register int len;
- char *retval;
-
- len = 0;
- SKIP_WHITESPACE ();
- if (*input_line_pointer == '\"')
- {
- input_line_pointer++; /* Skip opening quote. */
-
- while (is_a_char (c = next_char_of_string ()))
- {
- obstack_1grow (¬es, c);
- len++;
- }
- /* JF this next line is so demand_copy_C_string will return a null
- termanated string. */
- obstack_1grow (¬es, '\0');
- retval = obstack_finish (¬es);
- }
- else
- {
- as_warn ("Missing string");
- retval = NULL;
- ignore_rest_of_line ();
- }
- *lenP = len;
- return (retval);
- } /* demand_copy_string() */
-
- /*
- * is_it_end_of_statement()
- *
- * In: Input_line_pointer->next character.
- *
- * Do: Skip input_line_pointer over all whitespace.
- *
- * Out: 1 if input_line_pointer->end-of-line.
- */
- int
- is_it_end_of_statement ()
- {
- SKIP_WHITESPACE ();
- return (is_end_of_line[*input_line_pointer]);
- } /* is_it_end_of_statement() */
-
- void
- equals (sym_name)
- char *sym_name;
- {
- register symbolS *symbolP; /* symbol we are working with */
-
- input_line_pointer++;
- if (*input_line_pointer == '=')
- input_line_pointer++;
-
- while (*input_line_pointer == ' ' || *input_line_pointer == '\t')
- input_line_pointer++;
-
- if (sym_name[0] == '.' && sym_name[1] == '\0')
- {
- /* Turn '. = mumble' into a .org mumble */
- register segT segment;
- expressionS exp;
- register char *p;
-
- segment = get_known_segmented_expression (&exp);
- if (!need_pass_2)
- {
- if (segment != now_seg && segment != absolute_section)
- as_warn ("Illegal segment \"%s\". Segment \"%s\" assumed.",
- segment_name (segment),
- segment_name (now_seg));
- p = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp.X_add_symbol,
- exp.X_add_number, (char *) 0);
- *p = 0;
- } /* if (ok to make frag) */
- }
- else
- {
- symbolP = symbol_find_or_make (sym_name);
- pseudo_set (symbolP);
- }
- } /* equals() */
-
- /* .include -- include a file at this point. */
-
- /* ARGSUSED */
- void
- s_include (arg)
- int arg;
- {
- char *newbuf;
- char *filename;
- int i;
- FILE *try;
- char *path;
-
- filename = demand_copy_string (&i);
- demand_empty_rest_of_line ();
- path = xmalloc (i + include_dir_maxlen + 5 /* slop */ );
- for (i = 0; i < include_dir_count; i++)
- {
- strcpy (path, include_dirs[i]);
- strcat (path, "/");
- strcat (path, filename);
- if (0 != (try = fopen (path, "r")))
- {
- fclose (try);
- goto gotit;
- }
- }
- free (path);
- path = filename;
- gotit:
- /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */
- newbuf = input_scrub_include_file (path, input_line_pointer);
- buffer_limit = input_scrub_next_buffer (&input_line_pointer);
- } /* s_include() */
-
- void
- add_include_dir (path)
- char *path;
- {
- int i;
-
- if (include_dir_count == 0)
- {
- include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs));
- include_dirs[0] = "."; /* Current dir */
- include_dir_count = 2;
- }
- else
- {
- include_dir_count++;
- include_dirs = (char **) realloc (include_dirs,
- include_dir_count * sizeof (*include_dirs));
- }
-
- include_dirs[include_dir_count - 1] = path; /* New one */
-
- i = strlen (path);
- if (i > include_dir_maxlen)
- include_dir_maxlen = i;
- } /* add_include_dir() */
-
- void
- s_ignore (arg)
- int arg;
- {
- while (!is_end_of_line[*input_line_pointer])
- {
- ++input_line_pointer;
- }
- ++input_line_pointer;
-
- return;
- } /* s_ignore() */
-
- /* end of read.c */
-