-/* 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 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
+ 1999, 2000, 2001, 2002, 2003, 2005, 2006, 2007, 2008
+ 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)
+ the Free Software Foundation; either version 3, 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. */
+ along with GAS; see the file COPYING. If not, write to the Free
+ Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, 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 the # in # <number> <filename> <garbage> into a
+ .linefile. This needs better error-handling. */
+
+#include "as.h"
+
+#if (__STDC__ != 1)
+#ifndef const
+#define const /* empty */
+#endif
+#endif
-/* 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.
- */
+#ifdef H_TICK_HEX
+int enable_h_tick_hex = 0;
+#endif
-#include <stdio.h>
-#include "as.h" /* For BAD_CASE() only */
+#ifdef TC_M68K
+/* Whether we are scrubbing in m68k MRI mode. This is different from
+ flag_m68k_mri, because the two flags will be affected by the .mri
+ pseudo-op at different times. */
+static int scrub_m68k_mri;
-#if !defined(__STDC__) && !defined(const)
-#define const /* Nothing */
+/* The pseudo-op which switches in and out of MRI mode. See the
+ comment in do_scrub_chars. */
+static const char mri_pseudo[] = ".mri 0";
+#else
+#define scrub_m68k_mri 0
#endif
-static char lex [256];
-static char symbol_chars[] =
- "$._ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+#if defined TC_ARM && defined OBJ_ELF
+/* The pseudo-op for which we need to special-case `@' characters.
+ See the comment in do_scrub_chars. */
+static const char symver_pseudo[] = ".symver";
+static const char * symver_state;
+#endif
-/* These will go in BSS if not defined elsewhere, producing empty strings. */
-extern const char comment_chars[];
-extern const char line_comment_chars[];
-extern const char line_separator_chars[];
+static char lex[256];
+static const char symbol_chars[] =
+"$._ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
#define LEX_IS_SYMBOL_COMPONENT 1
#define LEX_IS_WHITESPACE 2
#define LEX_IS_COMMENT_START 4
#define LEX_IS_LINE_COMMENT_START 5
#define LEX_IS_TWOCHAR_COMMENT_1ST 6
-#define LEX_IS_TWOCHAR_COMMENT_2ND 7
#define LEX_IS_STRINGQUOTE 8
#define LEX_IS_COLON 9
#define LEX_IS_NEWLINE 10
#define LEX_IS_ONECHAR_QUOTE 11
+#ifdef TC_V850
+#define LEX_IS_DOUBLEDASH_1ST 12
+#endif
+#ifdef TC_M32R
+#define DOUBLEBAR_PARALLEL
+#endif
+#ifdef DOUBLEBAR_PARALLEL
+#define LEX_IS_DOUBLEBAR_1ST 13
+#endif
+#define LEX_IS_PARALLEL_SEPARATOR 14
+#ifdef H_TICK_HEX
+#define LEX_IS_H 15
+#endif
#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_PARALLEL_SEPARATOR(c) (lex[c] == LEX_IS_PARALLEL_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 (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;
- 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;
- } /* declare symbol characters */
-
- for (p = line_comment_chars; *p; p++) {
- lex[*p] = LEX_IS_LINE_COMMENT_START;
- } /* declare line comment chars */
-
- for (p = comment_chars; *p; p++) {
- lex[*p] = LEX_IS_COMMENT_START;
- } /* declare comment chars */
-
- for (p = line_separator_chars; *p; p++) {
- lex[*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() */
+ each and every time the assembler is run. xoxorich. */
-FILE *scrub_file;
+void
+do_scrub_begin (int m68k_mri ATTRIBUTE_UNUSED)
+{
+ const char *p;
+ int c;
-int scrub_from_file() {
- return getc(scrub_file);
-}
+ lex[' '] = LEX_IS_WHITESPACE;
+ lex['\t'] = LEX_IS_WHITESPACE;
+ lex['\r'] = LEX_IS_WHITESPACE;
+ lex['\n'] = LEX_IS_NEWLINE;
+ lex[':'] = LEX_IS_COLON;
-void scrub_to_file(ch)
-int ch;
-{
- ungetc(ch,scrub_file);
-} /* scrub_to_file() */
+#ifdef TC_M68K
+ scrub_m68k_mri = m68k_mri;
+
+ if (! m68k_mri)
+#endif
+ {
+ lex['"'] = LEX_IS_STRINGQUOTE;
-char *scrub_string;
-char *scrub_last_string;
+#if ! defined (TC_HPPA) && ! defined (TC_I370)
+ /* I370 uses single-quotes to delimit integer, float constants. */
+ lex['\''] = LEX_IS_ONECHAR_QUOTE;
+#endif
-int scrub_from_string() {
- return scrub_string == scrub_last_string ? EOF : *scrub_string++;
-} /* scrub_from_string() */
+#ifdef SINGLE_QUOTE_STRINGS
+ lex['\''] = LEX_IS_STRINGQUOTE;
+#endif
+ }
-void scrub_to_string(ch)
-int ch;
-{
- *--scrub_string=ch;
-} /* scrub_to_string() */
+ /* Note: if any other character can be LEX_IS_STRINGQUOTE, the loop
+ in state 5 of do_scrub_chars must be changed. */
-/* Saved state of the scrubber */
+ /* 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;
+
+ for (c = 128; c < 256; ++c)
+ lex[c] = LEX_IS_SYMBOL_COMPONENT;
+
+#ifdef tc_symbol_chars
+ /* This macro permits the processor to specify all characters which
+ may appears in an operand. This will prevent the scrubber from
+ discarding meaningful whitespace in certain cases. The i386
+ backend uses this to support prefixes, which can confuse the
+ scrubber as to whether it is parsing operands or opcodes. */
+ for (p = tc_symbol_chars; *p; ++p)
+ lex[(unsigned char) *p] = LEX_IS_SYMBOL_COMPONENT;
+#endif
+
+ /* The m68k backend wants to be able to change comment_chars. */
+#ifndef tc_comment_chars
+#define tc_comment_chars comment_chars
+#endif
+ for (p = tc_comment_chars; *p; p++)
+ lex[(unsigned char) *p] = LEX_IS_COMMENT_START;
+
+ for (p = line_comment_chars; *p; p++)
+ lex[(unsigned char) *p] = LEX_IS_LINE_COMMENT_START;
+
+ for (p = line_separator_chars; *p; p++)
+ lex[(unsigned char) *p] = LEX_IS_LINE_SEPARATOR;
+
+#ifdef tc_parallel_separator_chars
+ /* This macro permits the processor to specify all characters which
+ separate parallel insns on the same line. */
+ for (p = tc_parallel_separator_chars; *p; p++)
+ lex[(unsigned char) *p] = LEX_IS_PARALLEL_SEPARATOR;
+#endif
+
+ /* Only allow slash-star comments if slash is not in use.
+ FIXME: This isn't right. We should always permit them. */
+ if (lex['/'] == 0)
+ lex['/'] = LEX_IS_TWOCHAR_COMMENT_1ST;
+
+#ifdef TC_M68K
+ if (m68k_mri)
+ {
+ lex['\''] = LEX_IS_STRINGQUOTE;
+ lex[';'] = LEX_IS_COMMENT_START;
+ lex['*'] = LEX_IS_LINE_COMMENT_START;
+ /* The MRI documentation says '!' is LEX_IS_COMMENT_START, but
+ then it can't be used in an expression. */
+ lex['!'] = LEX_IS_LINE_COMMENT_START;
+ }
+#endif
+
+#ifdef TC_V850
+ lex['-'] = LEX_IS_DOUBLEDASH_1ST;
+#endif
+#ifdef DOUBLEBAR_PARALLEL
+ lex['|'] = LEX_IS_DOUBLEBAR_1ST;
+#endif
+#ifdef TC_D30V
+ /* Must do this is we want VLIW instruction with "->" or "<-". */
+ lex['-'] = LEX_IS_SYMBOL_COMPONENT;
+#endif
+
+#ifdef H_TICK_HEX
+ if (enable_h_tick_hex)
+ {
+ lex['h'] = LEX_IS_H;
+ lex['H'] = LEX_IS_H;
+ }
+#endif
+}
+
+/* Saved state of the scrubber. */
static int state;
static int old_state;
static char *out_string;
static char out_buf[20];
-static int add_newlines = 0;
+static int add_newlines;
+static char *saved_input;
+static int saved_input_len;
+static char input_buffer[32 * 1024];
+static const char *mri_state;
+static char mri_last_ch;
/* Data structure for saving the state of app across #include's. Note that
app is called asynchronously to the parsing of the .include's, so our
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;
+struct app_save
+{
+ int state;
+ int old_state;
+ char * out_string;
+ char out_buf[sizeof (out_buf)];
+ int add_newlines;
+ char * saved_input;
+ int saved_input_len;
+#ifdef TC_M68K
+ int scrub_m68k_mri;
+#endif
+ const char * mri_state;
+ char mri_last_ch;
+#if defined TC_ARM && defined OBJ_ELF
+ const char * symver_state;
+#endif
};
-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->scrub_last_string = scrub_last_string;
- saved->scrub_file = scrub_file;
-
- /* do_scrub_begin() is not useful, just wastes time. */
- return (char *)saved;
+char *
+app_push (void)
+{
+ 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;
+ memcpy (saved->out_buf, out_buf, sizeof (out_buf));
+ saved->add_newlines = add_newlines;
+ if (saved_input == NULL)
+ saved->saved_input = NULL;
+ else
+ {
+ saved->saved_input = (char *) xmalloc (saved_input_len);
+ memcpy (saved->saved_input, saved_input, saved_input_len);
+ saved->saved_input_len = saved_input_len;
+ }
+#ifdef TC_M68K
+ saved->scrub_m68k_mri = scrub_m68k_mri;
+#endif
+ saved->mri_state = mri_state;
+ saved->mri_last_ch = mri_last_ch;
+#if defined TC_ARM && defined OBJ_ELF
+ saved->symver_state = symver_state;
+#endif
+
+ /* do_scrub_begin() is not useful, just wastes time. */
+
+ state = 0;
+ saved_input = NULL;
+
+ return (char *) saved;
+}
+
+void
+app_pop (char *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;
+ memcpy (out_buf, saved->out_buf, sizeof (out_buf));
+ add_newlines = saved->add_newlines;
+ if (saved->saved_input == NULL)
+ saved_input = NULL;
+ else
+ {
+ gas_assert (saved->saved_input_len <= (int) (sizeof input_buffer));
+ memcpy (input_buffer, saved->saved_input, saved->saved_input_len);
+ saved_input = input_buffer;
+ saved_input_len = saved->saved_input_len;
+ free (saved->saved_input);
+ }
+#ifdef TC_M68K
+ scrub_m68k_mri = saved->scrub_m68k_mri;
+#endif
+ mri_state = saved->mri_state;
+ mri_last_ch = saved->mri_last_ch;
+#if defined TC_ARM && defined OBJ_ELF
+ symver_state = saved->symver_state;
+#endif
+
+ free (arg);
}
-void app_pop(arg)
-char *arg;
+/* @@ This assumes that \n &c are the same on host and target. This is not
+ necessarily true. */
+
+static int
+process_escape (int ch)
{
- 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;
- scrub_last_string = saved->scrub_last_string;
- scrub_file = saved->scrub_file;
-
- free (arg);
-} /* app_pop() */
-
-int do_scrub_next_char(get,unget)
-int (*get)();
-void (*unget)();
+ 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;
+ }
+}
+
+/* This function is called to process input characters. The GET
+ parameter is used to retrieve more input characters. GET should
+ set its parameter to point to a buffer, and return the length of
+ the buffer; it should return 0 at end of file. The scrubbed output
+ characters are put into the buffer starting at TOSTART; the TOSTART
+ buffer is TOLEN bytes in length. The function returns the number
+ of scrubbed characters put into TOSTART. This will be TOLEN unless
+ end of file was seen. This function is arranged as a state
+ machine, and saves its state so that it may return at any point.
+ This is the way the old code used to work. */
+
+int
+do_scrub_chars (int (*get) (char *, int), char *tostart, int tolen)
{
- /*State 0: beginning of normal line
+ char *to = tostart;
+ char *toend = tostart + tolen;
+ char *from;
+ char *fromend;
+ int fromlen;
+ register int ch, ch2 = 0;
+ /* Character that started the string we're working on. */
+ static char quotechar;
+
+ /*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
+ 4: after putting out a .linefile, 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
+ 7: no longer used
+ 8: no longer used
+ 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
+#ifdef TC_V850
+ 12: After seeing a dash, looking for a second dash as a start
+ of comment.
+#endif
+#ifdef DOUBLEBAR_PARALLEL
+ 13: After seeing a vertical bar, looking for a second
+ vertical bar as a parallel expression separator.
+#endif
+#ifdef TC_IA64
+ 14: After seeing a `(' at state 0, looking for a `)' as
+ predicate.
+ 15: After seeing a `(' at state 1, looking for a `)' as
+ predicate.
+#endif
+#ifdef TC_Z80
+ 16: After seeing an 'a' or an 'A' at the start of a symbol
+ 17: After seeing an 'f' or an 'F' in state 16
+#endif
*/
-
- register int ch, ch2 = 0;
-
- switch (state) {
- case -1:
- ch= *out_string++;
- if(*out_string==0) {
- state=old_state;
- old_state=3;
- }
- return ch;
-
+
+ /* 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 an 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.
+
+ I added state 13 so that something like "cmp r1, r2 || trap #1" does not
+ get squashed into "cmp r1,r2||trap#1", with the all important space
+ between the 'trap' and the '#1' being eliminated. nickc@cygnus.com */
+
+ /* This macro gets the next input character. */
+
+#define GET() \
+ (from < fromend \
+ ? * (unsigned char *) (from++) \
+ : (saved_input = NULL, \
+ fromlen = (*get) (input_buffer, sizeof input_buffer), \
+ from = input_buffer, \
+ fromend = from + fromlen, \
+ (fromlen == 0 \
+ ? EOF \
+ : * (unsigned char *) (from++))))
+
+ /* This macro pushes a character back on the input stream. */
+
+#define UNGET(uch) (*--from = (uch))
+
+ /* This macro puts a character into the output buffer. If this
+ character fills the output buffer, this macro jumps to the label
+ TOFULL. We use this rather ugly approach because we need to
+ handle two different termination conditions: EOF on the input
+ stream, and a full output buffer. It would be simpler if we
+ always read in the entire input stream before processing it, but
+ I don't want to make such a significant change to the assembler's
+ memory usage. */
+
+#define PUT(pch) \
+ do \
+ { \
+ *to++ = (pch); \
+ if (to >= toend) \
+ goto tofull; \
+ } \
+ while (0)
+
+ if (saved_input != NULL)
+ {
+ from = saved_input;
+ fromend = from + saved_input_len;
+ }
+ else
+ {
+ fromlen = (*get) (input_buffer, sizeof input_buffer);
+ if (fromlen == 0)
+ return 0;
+ from = input_buffer;
+ fromend = from + fromlen;
+ }
+
+ while (1)
+ {
+ /* The cases in this switch end with continue, in order to
+ branch back to the top of this while loop and generate the
+ next output character in the appropriate state. */
+ switch (state)
+ {
+ case -1:
+ ch = *out_string++;
+ if (*out_string == '\0')
+ {
+ state = old_state;
+ old_state = 3;
+ }
+ PUT (ch);
+ continue;
+
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);
+ for (;;)
+ {
+ do
+ {
+ ch = GET ();
+
+ if (ch == EOF)
+ {
+ as_warn (_("end of file in comment"));
+ goto fromeof;
+ }
+
+ if (ch == '\n')
+ PUT ('\n');
}
- state=old_state;
- return ' ';
-
+ while (ch != '*');
+
+ while ((ch = GET ()) == '*')
+ ;
+
+ if (ch == EOF)
+ {
+ as_warn (_("end of file in comment"));
+ goto fromeof;
+ }
+
+ if (ch == '/')
+ break;
+
+ UNGET (ch);
+ }
+
+ state = old_state;
+ UNGET (' ');
+ continue;
+
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;
- }
+ ch = GET ();
+ if (ch == EOF)
+ goto fromeof;
+ else if (ch >= '0' && ch <= '9')
+ PUT (ch);
+ else
+ {
+ while (ch != EOF && IS_WHITESPACE (ch))
+ ch = GET ();
+ if (ch == '"')
+ {
+ quotechar = ch;
+ state = 5;
+ old_state = 3;
+ PUT (ch);
}
-
- 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;
+ else
+ {
+ while (ch != EOF && ch != '\n')
+ ch = GET ();
+ state = 0;
+ PUT (ch);
}
-
+ }
+ continue;
+
+ case 5:
+ /* We are going to copy everything up to a quote character,
+ with special handling for a backslash. We try to
+ optimize the copying in the simple case without using the
+ GET and PUT macros. */
+ {
+ char *s;
+ int len;
+
+ for (s = from; s < fromend; s++)
+ {
+ ch = *s;
+ if (ch == '\\'
+ || ch == quotechar
+ || ch == '\n')
+ break;
+ }
+ len = s - from;
+ if (len > toend - to)
+ len = toend - to;
+ if (len > 0)
+ {
+ memcpy (to, from, len);
+ to += len;
+ from += len;
+ if (to >= toend)
+ goto tofull;
+ }
+ }
+
+ ch = GET ();
+ if (ch == EOF)
+ {
+ /* This buffer is here specifically so
+ that the UNGET below will work. */
+ static char one_char_buf[1];
+
+ as_warn (_("end of file in string; '%c' inserted"), quotechar);
+ state = old_state;
+ from = fromend = one_char_buf + 1;
+ fromlen = 1;
+ UNGET ('\n');
+ PUT (quotechar);
+ }
+ else if (ch == quotechar)
+ {
+ state = old_state;
+ PUT (ch);
+ }
+#ifndef NO_STRING_ESCAPES
+ else if (ch == '\\')
+ {
+ state = 6;
+ PUT (ch);
+ }
+#endif
+ else if (scrub_m68k_mri && ch == '\n')
+ {
+ /* Just quietly terminate the string. This permits lines like
+ bne label loop if we haven't reach end yet. */
+ state = old_state;
+ UNGET (ch);
+ PUT ('\'');
+ }
+ else
+ {
+ PUT (ch);
+ }
+ continue;
+
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':
-#ifdef BACKSLASH_V
- case 'v':
-#endif /* BACKSLASH_V */
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- break;
-
+ state = 5;
+ ch = GET ();
+ switch (ch)
+ {
+ /* Handle strings broken across lines, by turning '\n' into
+ '\\' and 'n'. */
+ case '\n':
+ UNGET ('n');
+ add_newlines++;
+ PUT ('\\');
+ continue;
+
+ case EOF:
+ as_warn (_("end of file in string; '%c' inserted"), quotechar);
+ PUT (quotechar);
+ continue;
+
+ case '"':
+ case '\\':
+ case 'b':
+ case 'f':
+ case 'n':
+ case 'r':
+ case 't':
+ case 'v':
+ case 'x':
+ case 'X':
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ break;
+
+ default:
#ifdef 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;
-#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;
+ as_warn (_("unknown escape '\\%c' in string; ignored"), ch);
+#endif
+ break;
+ }
+ PUT (ch);
+ continue;
+
+#ifdef DOUBLEBAR_PARALLEL
+ case 13:
+ ch = GET ();
+ if (ch != '|')
+ abort ();
+
+ /* Reset back to state 1 and pretend that we are parsing a
+ line from just after the first white space. */
+ state = 1;
+ PUT ('|');
+ continue;
+#endif
+#ifdef TC_Z80
+ case 16:
+ /* We have seen an 'a' at the start of a symbol, look for an 'f'. */
+ ch = GET ();
+ if (ch == 'f' || ch == 'F')
+ {
+ state = 17;
+ PUT (ch);
+ }
+ else
+ {
+ state = 9;
+ break;
+ }
+ case 17:
+ /* We have seen "af" at the start of a symbol,
+ a ' here is a part of that symbol. */
+ ch = GET ();
+ state = 9;
+ if (ch == '\'')
+ /* Change to avoid warning about unclosed string. */
+ PUT ('`');
+ else if (ch != EOF)
+ UNGET (ch);
+ break;
+#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;
+
+ /* OK, we are somewhere in states 0 through 4 or 9 through 11. */
+
+ /* flushchar: */
+ ch = GET ();
+
+#ifdef TC_IA64
+ if (ch == '(' && (state == 0 || state == 1))
+ {
+ state += 14;
+ PUT (ch);
+ continue;
+ }
+ else if (state == 14 || state == 15)
+ {
+ if (ch == ')')
+ {
+ state -= 14;
+ PUT (ch);
+ ch = GET ();
+ }
+ else
+ {
+ PUT (ch);
+ continue;
+ }
}
-
- switch (lex[ch]) {
+#endif
+
+ recycle:
+
+#if defined TC_ARM && defined OBJ_ELF
+ /* We need to watch out for .symver directives. See the comment later
+ in this function. */
+ if (symver_state == NULL)
+ {
+ if ((state == 0 || state == 1) && ch == symver_pseudo[0])
+ symver_state = symver_pseudo + 1;
+ }
+ else
+ {
+ /* We advance to the next state if we find the right
+ character. */
+ if (ch != '\0' && (*symver_state == ch))
+ ++symver_state;
+ else if (*symver_state != '\0')
+ /* We did not get the expected character, or we didn't
+ get a valid terminating character after seeing the
+ entire pseudo-op, so we must go back to the beginning. */
+ symver_state = NULL;
+ else
+ {
+ /* We've read the entire pseudo-op. If this is the end
+ of the line, go back to the beginning. */
+ if (IS_NEWLINE (ch))
+ symver_state = NULL;
+ }
+ }
+#endif /* TC_ARM && OBJ_ELF */
+
+#ifdef TC_M68K
+ /* We want to have pseudo-ops which control whether we are in
+ MRI mode or not. Unfortunately, since m68k MRI mode affects
+ the scrubber, that means that we need a special purpose
+ recognizer here. */
+ if (mri_state == NULL)
+ {
+ if ((state == 0 || state == 1)
+ && ch == mri_pseudo[0])
+ mri_state = mri_pseudo + 1;
+ }
+ else
+ {
+ /* We advance to the next state if we find the right
+ character, or if we need a space character and we get any
+ whitespace character, or if we need a '0' and we get a
+ '1' (this is so that we only need one state to handle
+ ``.mri 0'' and ``.mri 1''). */
+ if (ch != '\0'
+ && (*mri_state == ch
+ || (*mri_state == ' '
+ && lex[ch] == LEX_IS_WHITESPACE)
+ || (*mri_state == '0'
+ && ch == '1')))
+ {
+ mri_last_ch = ch;
+ ++mri_state;
+ }
+ else if (*mri_state != '\0'
+ || (lex[ch] != LEX_IS_WHITESPACE
+ && lex[ch] != LEX_IS_NEWLINE))
+ {
+ /* We did not get the expected character, or we didn't
+ get a valid terminating character after seeing the
+ entire pseudo-op, so we must go back to the
+ beginning. */
+ mri_state = NULL;
+ }
+ else
+ {
+ /* We've read the entire pseudo-op. mips_last_ch is
+ either '0' or '1' indicating whether to enter or
+ leave MRI mode. */
+ do_scrub_begin (mri_last_ch == '1');
+ mri_state = NULL;
+
+ /* We continue handling the character as usual. The
+ main gas reader must also handle the .mri pseudo-op
+ to control expression parsing and the like. */
+ }
+ }
+#endif
+
+ if (ch == EOF)
+ {
+ if (state != 0)
+ {
+ as_warn (_("end of file not at end of a line; newline inserted"));
+ state = 0;
+ PUT ('\n');
+ }
+ goto fromeof;
+ }
+
+ 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;
+ do
+ {
+ ch = GET ();
+ }
+ while (ch != EOF && IS_WHITESPACE (ch));
+ if (ch == EOF)
+ goto fromeof;
+
+ if (state == 0)
+ {
+ /* Preserve a single whitespace character at the
+ beginning of a line. */
+ state = 1;
+ UNGET (ch);
+ PUT (' ');
+ break;
+ }
+
+#ifdef KEEP_WHITE_AROUND_COLON
+ if (lex[ch] == LEX_IS_COLON)
+ {
+ /* Only keep this white if there's no white *after* the
+ colon. */
+ ch2 = GET ();
+ if (ch2 != EOF)
+ UNGET (ch2);
+ if (!IS_WHITESPACE (ch2))
+ {
+ state = 9;
+ UNGET (ch);
+ PUT (' ');
+ break;
+ }
+ }
+#endif
+ if (IS_COMMENT (ch)
+ || ch == '/'
+ || IS_LINE_SEPARATOR (ch)
+ || IS_PARALLEL_SEPARATOR (ch))
+ {
+ if (scrub_m68k_mri)
+ {
+ /* In MRI mode, we keep these spaces. */
+ UNGET (ch);
+ PUT (' ');
+ break;
}
- 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);
+ goto recycle;
+ }
+
+ /* 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
+ normally must ignore. In MRI mode, though, spaces are
+ not permitted between the label and the colon. */
+ if ((state == 2 || state == 11)
+ && lex[ch] == LEX_IS_COLON
+ && ! scrub_m68k_mri)
+ {
+ state = 1;
+ PUT (ch);
+ break;
+ }
+
+ switch (state)
+ {
+ 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;
+ if (to + 1 < toend)
+ {
+ /* Optimize common case by skipping UNGET/GET. */
+ PUT (' '); /* Sp after opco */
+ goto recycle;
}
- break;
-
+ UNGET (ch);
+ PUT (' ');
+ break;
+ case 3:
+ if (scrub_m68k_mri)
+ {
+ /* In MRI mode, we keep these spaces. */
+ UNGET (ch);
+ PUT (' ');
+ break;
+ }
+ goto recycle; /* Sp in operands */
+ case 9:
+ case 10:
+ if (scrub_m68k_mri)
+ {
+ /* In MRI mode, we keep these spaces. */
+ state = 3;
+ UNGET (ch);
+ PUT (' ');
+ break;
+ }
+ state = 10; /* Sp after symbol char */
+ goto recycle;
+ case 11:
+ if (LABELS_WITHOUT_COLONS || flag_m68k_mri)
+ state = 1;
+ else
+ {
+ /* We know that ch is not ':', since we tested that
+ case above. Therefore this is not a label, so it
+ must be the opcode, and we've just seen the
+ whitespace after it. */
+ state = 3;
+ }
+ UNGET (ch);
+ PUT (' '); /* Sp after label definition. */
+ break;
+ 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++;
- } 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;
+ ch2 = GET ();
+ if (ch2 == '*')
+ {
+ for (;;)
+ {
+ do
+ {
+ ch2 = GET ();
+ if (ch2 != EOF && IS_NEWLINE (ch2))
+ add_newlines++;
+ }
+ while (ch2 != EOF && ch2 != '*');
+
+ while (ch2 == '*')
+ ch2 = GET ();
+
+ if (ch2 == EOF || ch2 == '/')
+ break;
+
+ /* This UNGET will ensure that we count newlines
+ correctly. */
+ UNGET (ch2);
}
- break;
-
+
+ if (ch2 == EOF)
+ as_warn (_("end of file in multiline comment"));
+
+ ch = ' ';
+ goto recycle;
+ }
+#ifdef DOUBLESLASH_LINE_COMMENTS
+ else if (ch2 == '/')
+ {
+ do
+ {
+ ch = GET ();
+ }
+ while (ch != EOF && !IS_NEWLINE (ch));
+ if (ch == EOF)
+ as_warn ("end of file in comment; newline inserted");
+ state = 0;
+ PUT ('\n');
+ break;
+ }
+#endif
+ else
+ {
+ if (ch2 != EOF)
+ UNGET (ch2);
+ if (state == 9 || state == 10)
+ state = 3;
+ PUT (ch);
+ }
+ break;
+
case LEX_IS_STRINGQUOTE:
- old_state=state;
- state=5;
- return ch;
-
+ quotechar = ch;
+ if (state == 10)
+ {
+ /* Preserve the whitespace in foo "bar". */
+ UNGET (ch);
+ state = 3;
+ PUT (' ');
+
+ /* PUT didn't jump out. We could just break, but we
+ know what will happen, so optimize a bit. */
+ ch = GET ();
+ old_state = 3;
+ }
+ else if (state == 9)
+ old_state = 3;
+ else
+ old_state = state;
+ state = 5;
+ PUT (ch);
+ break;
+
#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;
+#ifdef H_TICK_HEX
+ if (state == 9 && enable_h_tick_hex)
+ {
+ char c;
+
+ c = GET ();
+ as_warn ("'%c found after symbol", c);
+ UNGET (c);
+ }
+#endif
+ if (state == 10)
+ {
+ /* Preserve the whitespace in foo 'b'. */
+ UNGET (ch);
+ state = 3;
+ PUT (' ');
+ break;
+ }
+ ch = GET ();
+ if (ch == EOF)
+ {
+ as_warn (_("end of file after a one-character quote; \\0 inserted"));
+ ch = 0;
+ }
+ if (ch == '\\')
+ {
+ ch = GET ();
+ if (ch == EOF)
+ {
+ as_warn (_("end of file in escape character"));
+ ch = '\\';
}
- sprintf(out_buf,"%d", (int)(unsigned char)ch);
-
- /* None of these 'x constants for us. We want 'x'.
- */
- if ( (ch=(*get)()) != '\'' ) {
+ else
+ ch = process_escape (ch);
+ }
+ sprintf (out_buf, "%d", (int) (unsigned char) ch);
+
+ /* 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);
+ if (ch != EOF)
+ UNGET (ch);
#endif
- }
-
- old_state=state;
- state= -1;
- out_string=out_buf;
- return *out_string++;
+ }
+ if (strlen (out_buf) == 1)
+ {
+ PUT (out_buf[0]);
+ break;
+ }
+ if (state == 9)
+ old_state = 3;
+ else
+ old_state = state;
+ state = -1;
+ out_string = out_buf;
+ PUT (*out_string++);
+ break;
#endif
+
case LEX_IS_COLON:
- if(state!=3)
- state=0;
- return ch;
-
+#ifdef KEEP_WHITE_AROUND_COLON
+ state = 9;
+#else
+ if (state == 9 || state == 10)
+ state = 3;
+ else if (state != 3)
+ state = 1;
+#endif
+ PUT (ch);
+ break;
+
case LEX_IS_NEWLINE:
- /* Roll out a bunch of newlines from inside comments, etc. */
- if(add_newlines) {
- --add_newlines;
- (*unget)(ch);
- }
- /* fall thru into... */
-
+ /* Roll out a bunch of newlines from inside comments, etc. */
+ if (add_newlines)
+ {
+ --add_newlines;
+ UNGET (ch);
+ }
+ /* Fall through. */
+
case LEX_IS_LINE_SEPARATOR:
- state=0;
- return ch;
-
+ state = 0;
+ PUT (ch);
+ break;
+
+ case LEX_IS_PARALLEL_SEPARATOR:
+ state = 1;
+ PUT (ch);
+ break;
+
+#ifdef TC_V850
+ case LEX_IS_DOUBLEDASH_1ST:
+ ch2 = GET ();
+ if (ch2 != '-')
+ {
+ if (ch2 != EOF)
+ UNGET (ch2);
+ goto de_fault;
+ }
+ /* Read and skip to end of line. */
+ do
+ {
+ ch = GET ();
+ }
+ while (ch != EOF && ch != '\n');
+
+ if (ch == EOF)
+ as_warn (_("end of file in comment; newline inserted"));
+
+ state = 0;
+ PUT ('\n');
+ break;
+#endif
+#ifdef DOUBLEBAR_PARALLEL
+ case LEX_IS_DOUBLEBAR_1ST:
+ ch2 = GET ();
+ if (ch2 != EOF)
+ UNGET (ch2);
+ if (ch2 != '|')
+ goto de_fault;
+
+ /* Handle '||' in two states as invoking PUT twice might
+ result in the first one jumping out of this loop. We'd
+ then lose track of the state and one '|' char. */
+ state = 13;
+ PUT ('|');
+ break;
+#endif
case LEX_IS_LINE_COMMENT_START:
- if (state != 0) /* Not at start of line, act normal */
- goto de_fault;
-
- /* 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)()) == '*') {
- state = -2;
- return(do_scrub_next_char(get, unget));
- } else {
- (*unget)(ch2);
- } /* bad hack */
-
- do ch=(*get)();
- while(ch!=EOF && IS_WHITESPACE(ch));
- if(ch==EOF) {
- as_warn("EOF in comment: Newline inserted");
- return '\n';
+ /* 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 == '*')
+ {
+ old_state = 3;
+ state = -2;
+ break;
+ }
+ else
+ {
+ UNGET (ch2);
}
- 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';
+ }
+
+ if (state == 0 || state == 1) /* Only comment at start of line. */
+ {
+ int startch;
+
+ startch = ch;
+
+ do
+ {
+ ch = GET ();
}
- /* Numerics begin comment. Perhaps CPP `# 123 "filename"' */
- (*unget)(ch);
- old_state=4;
- state= -1;
- out_string=".line ";
- return *out_string++;
-
+ while (ch != EOF && IS_WHITESPACE (ch));
+
+ if (ch == EOF)
+ {
+ as_warn (_("end of file in comment; newline inserted"));
+ PUT ('\n');
+ break;
+ }
+
+ if (ch < '0' || ch > '9' || state != 0 || startch != '#')
+ {
+ /* Not a cpp line. */
+ while (ch != EOF && !IS_NEWLINE (ch))
+ ch = GET ();
+ if (ch == EOF)
+ as_warn (_("end of file in comment; newline inserted"));
+ state = 0;
+ PUT ('\n');
+ break;
+ }
+ /* Looks like `# 123 "filename"' from cpp. */
+ UNGET (ch);
+ old_state = 4;
+ state = -1;
+ if (scrub_m68k_mri)
+ out_string = "\tlinefile ";
+ else
+ out_string = "\t.linefile ";
+ PUT (*out_string++);
+ break;
+ }
+
+#ifdef TC_D10V
+ /* All insns end in a char for which LEX_IS_SYMBOL_COMPONENT is true.
+ Trap is the only short insn that has a first operand that is
+ neither register nor label.
+ We must prevent exef0f ||trap #1 to degenerate to exef0f ||trap#1 .
+ We can't make '#' LEX_IS_SYMBOL_COMPONENT because it is
+ already LEX_IS_LINE_COMMENT_START. However, it is the
+ only character in line_comment_chars for d10v, hence we
+ can recognize it as such. */
+ /* An alternative approach would be to reset the state to 1 when
+ we see '||', '<'- or '->', but that seems to be overkill. */
+ if (state == 10)
+ PUT (' ');
+#endif
+ /* 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 (tc_comment_chars, ch) == NULL
+ && (! scrub_m68k_mri
+ || (ch != '!' && ch != '*')))
+ goto de_fault;
+ if (scrub_m68k_mri
+ && (ch == '!' || ch == '*' || ch == '#')
+ && state != 1
+ && state != 10)
+ 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';
-
+#if defined TC_ARM && defined OBJ_ELF
+ /* On the ARM, `@' is the comment character.
+ Unfortunately this is also a special character in ELF .symver
+ directives (and .type, though we deal with those another way).
+ So we check if this line is such a directive, and treat
+ the character as default if so. This is a hack. */
+ if ((symver_state != NULL) && (*symver_state == 0))
+ goto de_fault;
+#endif
+
+#ifdef TC_ARM
+ /* For the ARM, care is needed not to damage occurrences of \@
+ by stripping the @ onwards. Yuck. */
+ if (to > tostart && *(to - 1) == '\\')
+ /* Do not treat the @ as a start-of-comment. */
+ goto de_fault;
+#endif
+
+#ifdef WARN_COMMENTS
+ if (!found_comment)
+ as_where (&found_comment_file, &found_comment);
+#endif
+ do
+ {
+ ch = GET ();
+ }
+ while (ch != EOF && !IS_NEWLINE (ch));
+ if (ch == EOF)
+ as_warn (_("end of file in comment; newline inserted"));
+ state = 0;
+ PUT ('\n');
+ break;
+
+#ifdef H_TICK_HEX
+ case LEX_IS_H:
+ /* Look for strings like H'[0-9A-Fa-f] and if found, replace
+ the H' with 0x to make them gas-style hex characters. */
+ if (enable_h_tick_hex)
+ {
+ char quot;
+
+ quot = GET ();
+ if (quot == '\'')
+ {
+ UNGET ('x');
+ ch = '0';
+ }
+ else
+ UNGET (quot);
+ }
+ /* FALL THROUGH */
+#endif
+
+ 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;
+ PUT (' ');
+ break;
+ }
+
+#ifdef TC_Z80
+ /* "af'" is a symbol containing '\''. */
+ if (state == 3 && (ch == 'a' || ch == 'A'))
+ {
+ state = 16;
+ PUT (ch);
+ ch = GET ();
+ if (ch == 'f' || ch == 'F')
+ {
+ state = 17;
+ PUT (ch);
+ break;
+ }
+ else
+ {
+ state = 9;
+ if (!IS_SYMBOL_COMPONENT (ch))
+ {
+ if (ch != EOF)
+ UNGET (ch);
+ break;
+ }
+ }
+ }
+#endif
+ if (state == 3)
+ state = 9;
+
+ /* This is a common case. Quickly copy CH and all the
+ following symbol component or normal characters. */
+ if (to + 1 < toend
+ && mri_state == NULL
+#if defined TC_ARM && defined OBJ_ELF
+ && symver_state == NULL
+#endif
+ )
+ {
+ char *s;
+ int len;
+
+ for (s = from; s < fromend; s++)
+ {
+ int type;
+
+ ch2 = *(unsigned char *) s;
+ type = lex[ch2];
+ if (type != 0
+ && type != LEX_IS_SYMBOL_COMPONENT)
+ break;
+ }
+
+ if (s > from)
+ /* Handle the last character normally, for
+ simplicity. */
+ --s;
+
+ len = s - from;
+
+ if (len > (toend - to) - 1)
+ len = (toend - to) - 1;
+
+ if (len > 0)
+ {
+ PUT (ch);
+ memcpy (to, from, len);
+ to += len;
+ from += len;
+ if (to >= toend)
+ goto tofull;
+ ch = GET ();
+ }
+ }
+
+ /* Fall through. */
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 */
+ /* Some relatively `normal' character. */
+ if (state == 0)
+ {
+ state = 11; /* Now seeing label definition. */
+ }
+ else if (state == 1)
+ {
+ state = 2; /* Ditto. */
+ }
+ else if (state == 9)
+ {
+ if (!IS_SYMBOL_COMPONENT (ch))
+ state = 3;
+ }
+ else if (state == 10)
+ {
+ if (ch == '\\')
+ {
+ /* Special handling for backslash: a backslash may
+ be the beginning of a formal parameter (of a
+ macro) following another symbol character, with
+ whitespace in between. If that is the case, we
+ output a space before the parameter. Strictly
+ speaking, correct handling depends upon what the
+ macro parameter expands into; if the parameter
+ expands into something which does not start with
+ an operand character, then we don't want to keep
+ the space. We don't have enough information to
+ make the right choice, so here we are making the
+ choice which is more likely to be correct. */
+ if (to + 1 >= toend)
+ {
+ /* If we're near the end of the buffer, save the
+ character for the next time round. Otherwise
+ we'll lose our state. */
+ UNGET (ch);
+ goto tofull;
+ }
+ *to++ = ' ';
}
+
+ state = 3;
+ }
+ PUT (ch);
+ break;
}
- return -1;
-}
+ }
-#ifdef TEST
+ /*NOTREACHED*/
-char comment_chars[] = "|";
-char line_comment_chars[] = "#";
+ fromeof:
+ /* We have reached the end of the input. */
+ return to - tostart;
-main()
-{
- int ch;
-
- app_begin();
- while((ch=do_scrub_next_char(stdin))!=EOF)
- putc(ch,stdout);
-}
+ tofull:
+ /* The output buffer is full. Save any input we have not yet
+ processed. */
+ if (fromend > from)
+ {
+ saved_input = from;
+ saved_input_len = fromend - from;
+ }
+ else
+ saved_input = NULL;
-as_warn(str)
-char *str;
-{
- fputs(str,stderr);
- putc('\n',stderr);
+ return to - tostart;
}
-#endif
-
-/*
- * Local Variables:
- * comment-column: 0
- * fill-column: 131
- * End:
- */
-
-/* end of app.c */
projects / external / binutils.git / blobdiff