-/* Copyright (C) 1987, 1990, 1991 Free Software Foundation, Inc.
-
-Modified by Allen Wirfs-Brock, Instantiations Inc 2/90
-*/
/* This is the Assembler Pre-Processor
- Copyright (C) 1987 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1990, 1991, 1992, 1994 Free Software Foundation, Inc.
-This file is part of GAS, the GNU Assembler.
+ 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 1, or (at your option)
-any later version.
+ 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.
+ 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. */
+ 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+/* Modified by Allen Wirfs-Brock, Instantiations Inc 2/90 */
/* App, the assembler pre-processor. This pre-processor strips out excess
spaces, turns single-quoted characters into a decimal constant, and turns
- # <number> <filename> <garbage> into a .line <number>\n.app-file <filename> pair.
- This needs better error-handling.
- */
-
-/* static const char rcsid[] = "$Id$"; */
+ # <number> <filename> <garbage> into a .line <number>\n.file <filename>
+ pair. This needs better error-handling. */
#include <stdio.h>
-#include "as.h" /* For BAD_CASE() only */
+#include "as.h" /* For BAD_CASE() only */
-#if !defined(__STDC__) && !defined(const)
-#define const /* Nothing */
+#if (__STDC__ != 1)
+#ifndef const
+#define const /* empty */
+#endif
#endif
-static char lex [256];
-static char symbol_chars[] =
- "$._ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
-
-/* These will go in BSS if not defined elsewhere, producing empty strings. */
-extern const char comment_chars[];
-extern const char line_comment_chars[];
-extern const char line_separator_chars[];
+static char lex[256];
+static const char symbol_chars[] =
+"$._ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
#define LEX_IS_SYMBOL_COMPONENT 1
#define LEX_IS_WHITESPACE 2
#define LEX_IS_COLON 9
#define LEX_IS_NEWLINE 10
#define LEX_IS_ONECHAR_QUOTE 11
-#define IS_SYMBOL_COMPONENT(c) (lex [c] == LEX_IS_SYMBOL_COMPONENT)
-#define IS_WHITESPACE(c) (lex [c] == LEX_IS_WHITESPACE)
-#define IS_LINE_SEPARATOR(c) (lex [c] == LEX_IS_LINE_SEPARATOR)
-#define IS_COMMENT(c) (lex [c] == LEX_IS_COMMENT_START)
-#define IS_LINE_COMMENT(c) (lex [c] == LEX_IS_LINE_COMMENT_START)
-#define IS_NEWLINE(c) (lex [c] == LEX_IS_NEWLINE)
-
-void do_scrub_begin() {
- const char *p;
-
- lex [' '] = LEX_IS_WHITESPACE;
- lex ['\t'] = LEX_IS_WHITESPACE;
- lex ['\n'] = LEX_IS_NEWLINE;
- lex [';'] = LEX_IS_LINE_SEPARATOR;
- lex ['"'] = LEX_IS_STRINGQUOTE;
- lex ['\''] = LEX_IS_ONECHAR_QUOTE;
- lex [':'] = LEX_IS_COLON;
-
- /* Note that these override the previous defaults, e.g. if ';'
- is a comment char, then it isn't a line separator. */
- for (p =symbol_chars;*p;++p)
- lex[*p] = LEX_IS_SYMBOL_COMPONENT;
- for (p=comment_chars;*p;p++)
- lex[*p] = LEX_IS_COMMENT_START;
- for (p=line_comment_chars;*p;p++)
- lex[*p] = LEX_IS_LINE_COMMENT_START;
- for (p=line_separator_chars;*p;p++)
- lex[*p] = LEX_IS_LINE_SEPARATOR;
-
- /* Only allow slash-star comments if slash is not in use */
- if (lex['/'] == 0) {
- lex ['/'] = LEX_IS_TWOCHAR_COMMENT_1ST;
- lex ['*'] = LEX_IS_TWOCHAR_COMMENT_2ND;
- }
-}
+#define IS_SYMBOL_COMPONENT(c) (lex[c] == LEX_IS_SYMBOL_COMPONENT)
+#define IS_WHITESPACE(c) (lex[c] == LEX_IS_WHITESPACE)
+#define IS_LINE_SEPARATOR(c) (lex[c] == LEX_IS_LINE_SEPARATOR)
+#define IS_COMMENT(c) (lex[c] == LEX_IS_COMMENT_START)
+#define IS_LINE_COMMENT(c) (lex[c] == LEX_IS_LINE_COMMENT_START)
+#define IS_NEWLINE(c) (lex[c] == LEX_IS_NEWLINE)
+
+static int process_escape PARAMS ((int));
+
+/* FIXME-soon: The entire lexer/parser thingy should be
+ built statically at compile time rather than dynamically
+ each and every time the assembler is run. xoxorich. */
+
+void
+do_scrub_begin ()
+{
+ const char *p;
+
+ lex[' '] = LEX_IS_WHITESPACE;
+ lex['\t'] = LEX_IS_WHITESPACE;
+ lex['\n'] = LEX_IS_NEWLINE;
+ lex[';'] = LEX_IS_LINE_SEPARATOR;
+ lex['"'] = LEX_IS_STRINGQUOTE;
+#ifndef TC_HPPA
+ lex['\''] = LEX_IS_ONECHAR_QUOTE;
+#endif
+ lex[':'] = LEX_IS_COLON;
+
+
+
+#ifdef SINGLE_QUOTE_STRINGS
+ lex['\''] = LEX_IS_STRINGQUOTE;
+#endif
+
+ /* Note that these override the previous defaults, e.g. if ';' is a
+ comment char, then it isn't a line separator. */
+ for (p = symbol_chars; *p; ++p)
+ {
+ lex[(unsigned char) *p] = LEX_IS_SYMBOL_COMPONENT;
+ } /* declare symbol characters */
+
+ for (p = comment_chars; *p; p++)
+ {
+ lex[(unsigned char) *p] = LEX_IS_COMMENT_START;
+ } /* declare comment chars */
+
+ for (p = line_comment_chars; *p; p++)
+ {
+ lex[(unsigned char) *p] = LEX_IS_LINE_COMMENT_START;
+ } /* declare line comment chars */
+
+ for (p = line_separator_chars; *p; p++)
+ {
+ lex[(unsigned char) *p] = LEX_IS_LINE_SEPARATOR;
+ } /* declare line separators */
+
+ /* Only allow slash-star comments if slash is not in use */
+ if (lex['/'] == 0)
+ {
+ lex['/'] = LEX_IS_TWOCHAR_COMMENT_1ST;
+ }
+ /* FIXME-soon. This is a bad hack but otherwise, we can't do
+ c-style comments when '/' is a line comment char. xoxorich. */
+ if (lex['*'] == 0)
+ {
+ lex['*'] = LEX_IS_TWOCHAR_COMMENT_2ND;
+ }
+} /* do_scrub_begin() */
FILE *scrub_file;
-int scrub_from_file() {
- return getc(scrub_file);
+int
+scrub_from_file ()
+{
+ return getc (scrub_file);
}
-void scrub_to_file(ch)
-int ch;
+void
+scrub_to_file (ch)
+ int ch;
{
- ungetc(ch,scrub_file);
-} /* scrub_to_file() */
+ ungetc (ch, scrub_file);
+} /* scrub_to_file() */
char *scrub_string;
char *scrub_last_string;
-int scrub_from_string() {
- return scrub_string == scrub_last_string ? EOF : *scrub_string++;
-} /* scrub_from_string() */
+int
+scrub_from_string ()
+{
+ return scrub_string == scrub_last_string ? EOF : *scrub_string++;
+} /* scrub_from_string() */
-void scrub_to_string(ch)
-int ch;
+void
+scrub_to_string (ch)
+ int ch;
{
- *--scrub_string=ch;
-} /* scrub_to_string() */
+ *--scrub_string = ch;
+} /* scrub_to_string() */
/* Saved state of the scrubber */
static int state;
state at the time .include is interpreted is completely unrelated.
That's why we have to save it all. */
-struct app_save {
- int state;
- int old_state;
- char *out_string;
- char out_buf[sizeof (out_buf)];
- int add_newlines;
- char *scrub_string;
- char *scrub_last_string;
- FILE *scrub_file;
-};
-
-char *app_push() {
+struct app_save
+ {
+ int state;
+ int old_state;
+ char *out_string;
+ char out_buf[sizeof (out_buf)];
+ int add_newlines;
+ char *scrub_string;
+ char *scrub_last_string;
+ FILE *scrub_file;
+ };
+
+char *
+app_push ()
+{
register struct app_save *saved;
- saved = (struct app_save *) xmalloc(sizeof (*saved));
- saved->state = state;
- saved->old_state = old_state;
- saved->out_string = out_string;
- bcopy(saved->out_buf, out_buf, sizeof(out_buf));
- saved->add_newlines = add_newlines;
- saved->scrub_string = scrub_string;
+ saved = (struct app_save *) xmalloc (sizeof (*saved));
+ saved->state = state;
+ saved->old_state = old_state;
+ saved->out_string = out_string;
+ memcpy (saved->out_buf, out_buf, sizeof (out_buf));
+ saved->add_newlines = add_newlines;
+ saved->scrub_string = scrub_string;
saved->scrub_last_string = scrub_last_string;
- saved->scrub_file = scrub_file;
+ saved->scrub_file = scrub_file;
/* do_scrub_begin() is not useful, just wastes time. */
- return (char *)saved;
+ return (char *) saved;
}
-void app_pop(arg)
-char *arg;
+void
+app_pop (arg)
+ char *arg;
{
- register struct app_save *saved = (struct app_save *)arg;
+ register struct app_save *saved = (struct app_save *) arg;
/* There is no do_scrub_end (). */
- state = saved->state;
- old_state = saved->old_state;
- out_string = saved->out_string;
- bcopy (out_buf, saved->out_buf, sizeof (out_buf));
- add_newlines = saved->add_newlines;
- scrub_string = saved->scrub_string;
+ state = saved->state;
+ old_state = saved->old_state;
+ out_string = saved->out_string;
+ memcpy (out_buf, saved->out_buf, sizeof (out_buf));
+ add_newlines = saved->add_newlines;
+ scrub_string = saved->scrub_string;
scrub_last_string = saved->scrub_last_string;
- scrub_file = saved->scrub_file;
+ scrub_file = saved->scrub_file;
free (arg);
-} /* app_pop() */
+} /* app_pop() */
-int do_scrub_next_char(get,unget)
-int (*get)();
-void (*unget)();
+/* @@ This assumes that \n &c are the same on host and target. This is not
+ necessarily true. */
+static int
+process_escape (ch)
+ int ch;
{
- /*State 0: beginning of normal line
- 1: After first whitespace on line (flush more white)
- 2: After first non-white (opcode) on line (keep 1white)
- 3: after second white on line (into operands) (flush white)
- 4: after putting out a .line, put out digits
- 5: parsing a string, then go to old-state
- 6: putting out \ escape in a "d string.
- 7: After putting out a .app-file, put out string.
- 8: After putting out a .app-file string, flush until newline.
- -1: output string in out_string and go to the state in old_state
- -2: flush text until a '*' '/' is seen, then go to state old_state
- */
-
- register int ch, ch2;
-
- switch (state) {
- case -1:
- ch= *out_string++;
- if(*out_string==0) {
- state=old_state;
- old_state=3;
- }
- return ch;
-
- case -2:
- for(;;) {
- do {
- ch=(*get)();
- } while(ch!=EOF && ch!='\n' && ch!='*');
- if(ch=='\n' || ch==EOF)
- return ch;
-
- /* At this point, ch must be a '*' */
- while ( (ch=(*get)()) == '*' ){
- ;
- }
- if(ch==EOF || ch=='/')
- break;
- (*unget)(ch);
- }
- state=old_state;
- return ' ';
-
- case 4:
- ch=(*get)();
- if(ch==EOF || (ch>='0' && ch<='9'))
- return ch;
- else {
- while(ch!=EOF && IS_WHITESPACE(ch))
- ch=(*get)();
- if(ch=='"') {
- (*unget)(ch);
- out_string="\n.app-file ";
- old_state=7;
- state= -1;
- return *out_string++;
- } else {
- while(ch!=EOF && ch!='\n')
- ch=(*get)();
- return ch;
- }
- }
+ switch (ch)
+ {
+ case 'b':
+ return '\b';
+ case 'f':
+ return '\f';
+ case 'n':
+ return '\n';
+ case 'r':
+ return '\r';
+ case 't':
+ return '\t';
+ case '\'':
+ return '\'';
+ case '"':
+ return '\"';
+ default:
+ return ch;
+ }
+}
+int
+do_scrub_next_char (get, unget)
+ int (*get) ();
+ void (*unget) ();
+{
+ /*State 0: beginning of normal line
+ 1: After first whitespace on line (flush more white)
+ 2: After first non-white (opcode) on line (keep 1white)
+ 3: after second white on line (into operands) (flush white)
+ 4: after putting out a .line, put out digits
+ 5: parsing a string, then go to old-state
+ 6: putting out \ escape in a "d string.
+ 7: After putting out a .appfile, put out string.
+ 8: After putting out a .appfile string, flush until newline.
+ 9: After seeing symbol char in state 3 (keep 1white after symchar)
+ 10: After seeing whitespace in state 9 (keep white before symchar)
+ 11: After seeing a symbol character in state 0 (eg a label definition)
+ -1: output string in out_string and go to the state in old_state
+ -2: flush text until a '*' '/' is seen, then go to state old_state
+ */
+
+ /* I added states 9 and 10 because the MIPS ECOFF assembler uses
+ constructs like ``.loc 1 20''. This was turning into ``.loc
+ 120''. States 9 and 10 ensure that a space is never dropped in
+ between characters which could appear in a identifier. Ian
+ Taylor, ian@cygnus.com.
+
+ I added state 11 so that something like "Lfoo add %r25,%r26,%r27" works
+ correctly on the PA (and any other target where colons are optional).
+ Jeff Law, law@cs.utah.edu. */
+
+ /* This is purely an optimization hack, and relies on gcc's inlining
+ capability. */
+#if defined (__GNUC__) && defined (__OPTIMIZE__)
+#define GET() (get == scrub_from_file ? scrub_from_file () : (*get) ())
+#else
+#define GET() ((*get) ())
+#endif
- case 5:
- ch=(*get)();
- if(ch=='"') {
- state=old_state;
- return '"';
- } else if(ch=='\\') {
- state=6;
- return ch;
- } else if(ch==EOF) {
- as_warn("End of file in string: inserted '\"'");
- state=old_state;
- (*unget)('\n');
- return '"';
- } else {
- return ch;
- }
-
- case 6:
- state=5;
- ch=(*get)();
- switch(ch) {
- /* This is neet. Turn "string
- more string" into "string\n more string"
- */
- case '\n':
- (*unget)('n');
- add_newlines++;
- return '\\';
-
- case '"':
- case '\\':
- case 'b':
- case 'f':
- case 'n':
- case 'r':
- case 't':
+ register int ch, ch2 = 0;
+ int not_cpp_line = 0;
+
+ switch (state)
+ {
+ case -1:
+ ch = *out_string++;
+ if (*out_string == 0)
+ {
+ state = old_state;
+ old_state = 3;
+ }
+ return ch;
+
+ case -2:
+ for (;;)
+ {
+ do
+ {
+ ch = GET ();
+ }
+ while (ch != EOF && ch != '\n' && ch != '*');
+ if (ch == '\n' || ch == EOF)
+ return ch;
+
+ /* At this point, ch must be a '*' */
+ while ((ch = GET ()) == '*')
+ {
+ ;
+ }
+ if (ch == EOF || ch == '/')
+ break;
+ (*unget) (ch);
+ }
+ state = old_state;
+ return ' ';
+
+ case 4:
+ ch = GET ();
+ if (ch == EOF || (ch >= '0' && ch <= '9'))
+ return ch;
+ else
+ {
+ while (ch != EOF && IS_WHITESPACE (ch))
+ ch = GET ();
+ if (ch == '"')
+ {
+ (*unget) (ch);
+ out_string = "\n\t.appfile ";
+ old_state = 7;
+ state = -1;
+ return *out_string++;
+ }
+ else
+ {
+ while (ch != EOF && ch != '\n')
+ ch = GET ();
+ state = 0;
+ return ch;
+ }
+ }
+
+ case 5:
+ ch = GET ();
+ if (lex[ch] == LEX_IS_STRINGQUOTE)
+ {
+ state = old_state;
+ return ch;
+ }
+#ifndef NO_STRING_ESCAPES
+ else if (ch == '\\')
+ {
+ state = 6;
+ return ch;
+ }
+#endif
+ else if (ch == EOF)
+ {
+ as_warn ("End of file in string: inserted '\"'");
+ state = old_state;
+ (*unget) ('\n');
+ return '"';
+ }
+ else
+ {
+ return ch;
+ }
+
+ case 6:
+ state = 5;
+ ch = GET ();
+ switch (ch)
+ {
+ /* Handle strings broken across lines, by turning '\n' into
+ '\\' and 'n'. */
+ case '\n':
+ (*unget) ('n');
+ add_newlines++;
+ return '\\';
+
+ case '"':
+ case '\\':
+ case 'b':
+ case 'f':
+ case 'n':
+ case 'r':
+ case 't':
#ifdef BACKSLASH_V
- case 'v':
+ case 'v':
#endif /* BACKSLASH_V */
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- break;
-
-#ifdef ONLY_STANDARD_ESCAPES
- default:
- as_warn("Unknown escape '\\%c' in string: Ignored",ch);
- break;
+ case 'x':
+ case 'X':
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ break;
+#if defined(IGNORE_NONSTANDARD_ESCAPES) | defined(ONLY_STANDARD_ESCAPES)
+ default:
+ as_warn ("Unknown escape '\\%c' in string: Ignored", ch);
+ break;
#else /* ONLY_STANDARD_ESCAPES */
- default:
- /* Accept \x as x for any x */
- break;
+ default:
+ /* Accept \x as x for any x */
+ break;
#endif /* ONLY_STANDARD_ESCAPES */
- case EOF:
- as_warn("End of file in string: '\"' inserted");
- return '"';
- }
- return ch;
-
- case 7:
- ch=(*get)();
- state=5;
- old_state=8;
- return ch;
-
- case 8:
- do ch= (*get)();
- while(ch!='\n');
- state=0;
- return ch;
+ case EOF:
+ as_warn ("End of file in string: '\"' inserted");
+ return '"';
}
+ return ch;
+
+ case 7:
+ ch = GET ();
+ state = 5;
+ old_state = 8;
+ return ch;
+
+ case 8:
+ do
+ ch = GET ();
+ while (ch != '\n');
+ state = 0;
+ return ch;
+ }
+
+ /* OK, we are somewhere in states 0 through 4 or 9 through 11 */
+
+ /* flushchar: */
+ ch = GET ();
+recycle:
+ if (ch == EOF)
+ {
+ if (state != 0)
+ {
+ as_warn ("End of file not at end of a line: Newline inserted.");
+ state = 0;
+ return '\n';
+ }
+ return ch;
+ }
+
+ switch (lex[ch])
+ {
+ case LEX_IS_WHITESPACE:
+ do
+ /* Preserve a single whitespace character at the beginning of
+ a line. */
+ if (state == 0)
+ {
+ state = 1;
+ return ch;
+ }
+ else
+ ch = GET ();
+ while (ch != EOF && IS_WHITESPACE (ch));
+ if (ch == EOF)
+ return ch;
+
+ if (IS_COMMENT (ch)
+ || (state == 0 && IS_LINE_COMMENT (ch))
+ || ch == '/'
+ || IS_LINE_SEPARATOR (ch))
+ {
+ /* cpp never outputs a leading space before the #, so try to
+ avoid being confused. */
+ not_cpp_line = 1;
+ goto recycle;
+ }
+#ifdef MRI
+ (*unget) (ch); /* Put back */
+ return ' '; /* Always return one space at start of line */
+#endif
- /* OK, we are somewhere in states 0 through 4 */
-
-/* flushchar: */
- ch=(*get)();
- recycle:
- if (ch == EOF) {
- if (state != 0)
- as_warn("End of file not at end of a line: Newline inserted.");
- return ch;
+ /* If we're in state 2 or 11, we've seen a non-white character
+ followed by whitespace. If the next character is ':', this
+ is whitespace after a label name which we *must* ignore. */
+ if ((state == 2 || state == 11) && lex[ch] == LEX_IS_COLON)
+ {
+ state = 1;
+ return ch;
}
- switch (lex[ch]) {
- case LEX_IS_WHITESPACE:
- do ch=(*get)();
- while(ch!=EOF && IS_WHITESPACE(ch));
- if(ch==EOF)
- return ch;
- if(IS_COMMENT(ch) || (state==0 && IS_LINE_COMMENT(ch)) || ch=='/' || IS_LINE_SEPARATOR(ch)) {
- goto recycle;
- }
- switch (state) {
- case 0: state++; goto recycle; /* Punted leading sp */
- case 1: BAD_CASE(state); /* We can't get here */
- case 2: state++; (*unget)(ch); return ' '; /* Sp after opco */
- case 3: goto recycle; /* Sp in operands */
- default: BAD_CASE(state);
+ switch (state)
+ {
+ case 0:
+ state++;
+ goto recycle; /* Punted leading sp */
+ case 1:
+ /* We can arrive here if we leave a leading whitespace character
+ at the beginning of a line. */
+ goto recycle;
+ case 2:
+ state = 3;
+ (*unget) (ch);
+ return ' '; /* Sp after opco */
+ case 3:
+ goto recycle; /* Sp in operands */
+ case 9:
+ case 10:
+ state = 10; /* Sp after symbol char */
+ goto recycle;
+ case 11:
+ state = 1;
+ (*unget) (ch);
+ return ' '; /* Sp after label definition. */
+ default:
+ BAD_CASE (state);
+ }
+ break;
+
+ case LEX_IS_TWOCHAR_COMMENT_1ST:
+ ch2 = GET ();
+ if (ch2 != EOF && lex[ch2] == LEX_IS_TWOCHAR_COMMENT_2ND)
+ {
+ for (;;)
+ {
+ do
+ {
+ ch2 = GET ();
+ if (ch2 != EOF && IS_NEWLINE (ch2))
+ add_newlines++;
}
- break;
+ while (ch2 != EOF &&
+ (lex[ch2] != LEX_IS_TWOCHAR_COMMENT_2ND));
- case LEX_IS_TWOCHAR_COMMENT_1ST:
- ch2=(*get)();
- if (ch2 != EOF && lex[ch2] == LEX_IS_TWOCHAR_COMMENT_2ND) {
- for(;;) {
- do {
- ch2=(*get)();
- if(ch2 != EOF && IS_NEWLINE(ch2))
- add_newlines++;
- } while(ch2!=EOF &&
- (lex[ch2] != LEX_IS_TWOCHAR_COMMENT_2ND));
-
- while (ch2!=EOF &&
- (lex[ch2] == LEX_IS_TWOCHAR_COMMENT_2ND)){
- ch2=(*get)();
- }
-
- if(ch2==EOF
- || lex[ch2] == LEX_IS_TWOCHAR_COMMENT_1ST)
- break;
- (*unget)(ch);
- }
- if(ch2==EOF)
- as_warn("End of file in multiline comment");
-
- ch = ' ';
- goto recycle;
- } else {
- if(ch2!=EOF)
- (*unget)(ch2);
- return ch;
+ while (ch2 != EOF &&
+ (lex[ch2] == LEX_IS_TWOCHAR_COMMENT_2ND))
+ {
+ ch2 = GET ();
}
+
+ if (ch2 == EOF
+ || lex[ch2] == LEX_IS_TWOCHAR_COMMENT_1ST)
break;
+ (*unget) (ch);
+ }
+ if (ch2 == EOF)
+ as_warn ("End of file in multiline comment");
- case LEX_IS_STRINGQUOTE:
- old_state=state;
- state=5;
- return ch;
+ ch = ' ';
+ goto recycle;
+ }
+ else
+ {
+ if (ch2 != EOF)
+ (*unget) (ch2);
+ if (state == 9 || state == 10)
+ state = 3;
+ return ch;
+ }
+ break;
+
+ case LEX_IS_STRINGQUOTE:
+ if (state == 9 || state == 10)
+ old_state = 3;
+ else
+ old_state = state;
+ state = 5;
+ return ch;
+#ifndef MRI
+#ifndef IEEE_STYLE
+ case LEX_IS_ONECHAR_QUOTE:
+ ch = GET ();
+ if (ch == EOF)
+ {
+ as_warn ("End-of-file after a one-character quote; \\000 inserted");
+ ch = 0;
+ }
+ if (ch == '\\')
+ {
+ ch = GET ();
+ ch = process_escape (ch);
+ }
+ sprintf (out_buf, "%d", (int) (unsigned char) ch);
- case LEX_IS_ONECHAR_QUOTE:
- ch=(*get)();
- if(ch==EOF) {
- as_warn("End-of-file after a one-character quote; \000 inserted");
- ch=0;
- }
- sprintf(out_buf,"%d", (int)(unsigned char)ch);
- /* None of these 'x constants for us. We want 'x'.
- */
- if ( (ch=(*get)()) != '\'' ) {
+ /* None of these 'x constants for us. We want 'x'. */
+ if ((ch = GET ()) != '\'')
+ {
#ifdef REQUIRE_CHAR_CLOSE_QUOTE
- as_warn("Missing close quote: (assumed)");
+ as_warn ("Missing close quote: (assumed)");
#else
- (*unget)(ch);
+ (*unget) (ch);
#endif
+ }
+ if (strlen (out_buf) == 1)
+ {
+ return out_buf[0];
+ }
+ if (state == 9 || state == 10)
+ old_state = 3;
+ else
+ old_state = state;
+ state = -1;
+ out_string = out_buf;
+ return *out_string++;
+#endif
+#endif
+ case LEX_IS_COLON:
+ if (state == 9 || state == 10)
+ state = 3;
+ else if (state != 3)
+ state = 1;
+ return ch;
+
+ case LEX_IS_NEWLINE:
+ /* Roll out a bunch of newlines from inside comments, etc. */
+ if (add_newlines)
+ {
+ --add_newlines;
+ (*unget) (ch);
+ }
+ /* fall thru into... */
+
+ case LEX_IS_LINE_SEPARATOR:
+ state = 0;
+ return ch;
+
+ case LEX_IS_LINE_COMMENT_START:
+ if (state == 0) /* Only comment at start of line. */
+ {
+ /* FIXME-someday: The two character comment stuff was badly
+ thought out. On i386, we want '/' as line comment start
+ AND we want C style comments. hence this hack. The
+ whole lexical process should be reworked. xoxorich. */
+ if (ch == '/')
+ {
+ ch2 = GET ();
+ if (ch2 == '*')
+ {
+ state = -2;
+ return (do_scrub_next_char (get, unget));
}
-
- old_state=state;
- state= -1;
- out_string=out_buf;
- return *out_string++;
-
- case LEX_IS_COLON:
- if(state!=3)
- state=0;
- return ch;
-
- case LEX_IS_NEWLINE:
- /* Roll out a bunch of newlines from inside comments, etc. */
- if(add_newlines) {
- --add_newlines;
- (*unget)(ch);
- }
- /* fall thru into... */
-
- case LEX_IS_LINE_SEPARATOR:
- state=0;
- return ch;
-
- case LEX_IS_LINE_COMMENT_START:
- if (state != 0) /* Not at start of line, act normal */
- goto de_fault;
- do ch=(*get)();
- while(ch!=EOF && IS_WHITESPACE(ch));
- if(ch==EOF) {
- as_warn("EOF in comment: Newline inserted");
- return '\n';
- }
- if(ch<'0' || ch>'9') {
- /* Non-numerics: Eat whole comment line */
- while(ch!=EOF && !IS_NEWLINE(ch))
- ch=(*get)();
- if(ch==EOF)
- as_warn("EOF in Comment: Newline inserted");
- state=0;
- return '\n';
+ else
+ {
+ (*unget) (ch2);
}
- /* Numerics begin comment. Perhaps CPP `# 123 "filename"' */
- (*unget)(ch);
- old_state=4;
- state= -1;
- out_string=".line ";
- return *out_string++;
-
- case LEX_IS_COMMENT_START:
- do ch=(*get)();
- while(ch!=EOF && !IS_NEWLINE(ch));
- if(ch==EOF)
- as_warn("EOF in comment: Newline inserted");
- state=0;
- return '\n';
+ } /* bad hack */
+
+ if (ch != '#')
+ not_cpp_line = 1;
+
+ do
+ ch = GET ();
+ while (ch != EOF && IS_WHITESPACE (ch));
+ if (ch == EOF)
+ {
+ as_warn ("EOF in comment: Newline inserted");
+ return '\n';
+ }
+ if (ch < '0' || ch > '9' || not_cpp_line)
+ {
+ /* Non-numerics: Eat whole comment line */
+ while (ch != EOF && !IS_NEWLINE (ch))
+ ch = GET ();
+ if (ch == EOF)
+ as_warn ("EOF in Comment: Newline inserted");
+ state = 0;
+ return '\n';
+ }
+ /* Numerics begin comment. Perhaps CPP `# 123 "filename"' */
+ (*unget) (ch);
+ old_state = 4;
+ state = -1;
+ out_string = "\t.appline ";
+ return *out_string++;
+ }
- default:
- de_fault:
- /* Some relatively `normal' character. */
- if(state==0) {
- state=2; /* Now seeing opcode */
- return ch;
- } else if(state==1) {
- state=2; /* Ditto */
- return ch;
- } else {
- return ch; /* Opcode or operands already */
- }
+ /* We have a line comment character which is not at the start of
+ a line. If this is also a normal comment character, fall
+ through. Otherwise treat it as a default character. */
+ if (strchr (comment_chars, ch) == NULL)
+ goto de_fault;
+ /* Fall through. */
+ case LEX_IS_COMMENT_START:
+ do
+ ch = GET ();
+ while (ch != EOF && !IS_NEWLINE (ch));
+ if (ch == EOF)
+ as_warn ("EOF in comment: Newline inserted");
+ state = 0;
+ return '\n';
+
+ case LEX_IS_SYMBOL_COMPONENT:
+ if (state == 10)
+ {
+ /* This is a symbol character following another symbol
+ character, with whitespace in between. We skipped the
+ whitespace earlier, so output it now. */
+ (*unget) (ch);
+ state = 3;
+ return ' ';
+ }
+ if (state == 3)
+ state = 9;
+ /* Fall through. */
+ default:
+ de_fault:
+ /* Some relatively `normal' character. */
+ if (state == 0)
+ {
+ state = 11; /* Now seeing label definition */
+ return ch;
+ }
+ else if (state == 1)
+ {
+ state = 2; /* Ditto */
+ return ch;
+ }
+ else if (state == 9)
+ {
+ if (lex[ch] != LEX_IS_SYMBOL_COMPONENT)
+ state = 3;
+ return ch;
+ }
+ else if (state == 10)
+ {
+ state = 3;
+ return ch;
}
- return -1;
+ else
+ {
+ return ch; /* Opcode or operands already */
+ }
+ }
+ return -1;
+
+#undef GET
}
#ifdef TEST
-char comment_chars[] = "|";
-char line_comment_chars[] = "#";
+const char comment_chars[] = "|";
+const char line_comment_chars[] = "#";
-main()
+main ()
{
- int ch;
+ int ch;
- app_begin();
- while((ch=do_scrub_next_char(stdin))!=EOF)
- putc(ch,stdout);
+ app_begin ();
+ while ((ch = do_scrub_next_char (stdin)) != EOF)
+ putc (ch, stdout);
}
-as_warn(str)
-char *str;
+as_warn (str)
+ char *str;
{
- fputs(str,stderr);
- putc('\n',stderr);
+ fputs (str, stderr);
+ putc ('\n', stderr);
}
-#endif
-/*
- * Local Variables:
- * comment-column: 0
- * fill-column: 131
- * End:
- */
+#endif
/* end of app.c */
projects / deliverable / binutils-gdb.git / blobdiff