aboutsummaryrefslogtreecommitdiff
path: root/gas/input-scrub.c
diff options
context:
space:
mode:
Diffstat (limited to 'gas/input-scrub.c')
-rw-r--r--gas/input-scrub.c501
1 files changed, 239 insertions, 262 deletions
diff --git a/gas/input-scrub.c b/gas/input-scrub.c
index a710913..c058ef8 100644
--- a/gas/input-scrub.c
+++ b/gas/input-scrub.c
@@ -1,23 +1,21 @@
/* input_scrub.c - Break up input buffers into whole numbers of lines.
Copyright (C) 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 1, 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. */
-
-/* static const char rcsid[] = "$Id$"; */
+
+ 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. */
#include <errno.h> /* Need this to make errno declaration right */
#include "as.h"
@@ -58,48 +56,38 @@ static char * buffer_start; /*->1st char of full buffer area. */
static char * partial_where; /*->after last full line in buffer. */
static int partial_size; /* >=0. Number of chars in partial line in buffer. */
static char save_source [AFTER_SIZE];
- /* Because we need AFTER_STRING just after last */
- /* full line, it clobbers 1st part of partial */
- /* line. So we preserve 1st part of partial */
- /* line here. */
+/* Because we need AFTER_STRING just after last */
+/* full line, it clobbers 1st part of partial */
+/* line. So we preserve 1st part of partial */
+/* line here. */
static int buffer_length; /* What is the largest size buffer that */
- /* input_file_give_next_buffer() could */
- /* return to us? */
+/* input_file_give_next_buffer() could */
+/* return to us? */
-/* Saved information about the file that .include'd this one. When we
- hit EOF, we automatically pop to that file. */
+/* Saved information about the file that .include'd this one. When we hit EOF,
+ we automatically pop to that file. */
static char *next_saved_file;
-/*
-We can have more than one source file open at once, though the info for
-all but the latest one are saved off in a struct input_save. These
-files remain open, so we are limited by the number of open files allowed
-by the underlying OS.
-We may also sequentially read more than one source file in an assembly.
- */
+/* We can have more than one source file open at once, though the info for all
+ but the latest one are saved off in a struct input_save. These files remain
+ open, so we are limited by the number of open files allowed by the
+ underlying OS. We may also sequentially read more than one source file in an
+ assembly. */
+/* We must track the physical file and line number for error messages. We also
+ track a "logical" file and line number corresponding to (C?) compiler
+ source line numbers. Whenever we open a file we must fill in
+ physical_input_file. So if it is NULL we have not opened any files yet. */
-/*
-We must track the physical file and line number for error messages.
-We also track a "logical" file and line number corresponding to (C?)
-compiler source line numbers.
-Whenever we open a file we must fill in physical_input_file. So if it is NULL
-we have not opened any files yet.
- */
+char *physical_input_file;
+char *logical_input_file;
-static
-char * physical_input_file,
- * logical_input_file;
+typedef unsigned int line_numberT; /* 1-origin line number in a source file. */
+/* A line ends in '\n' or eof. */
-
-
-typedef unsigned int line_numberT; /* 1-origin line number in a source file. */
- /* A line ends in '\n' or eof. */
-
-static
-line_numberT physical_input_line,
- logical_input_line;
+line_numberT physical_input_line;
+line_numberT logical_input_line;
/* Struct used to save the state of the input handler during include files */
struct input_save {
@@ -126,14 +114,13 @@ static void as_1_char();
/* Push the state of input reading and scrubbing so that we can #include.
The return value is a 'void *' (fudged for old compilers) to a save
area, which can be restored by passing it to input_scrub_pop(). */
-char *
-input_scrub_push(saved_position)
- char *saved_position;
+char *input_scrub_push(saved_position)
+char *saved_position;
{
register struct input_save *saved;
-
+
saved = (struct input_save *) xmalloc(sizeof *saved);
-
+
saved->saved_position = saved_position;
saved->buffer_start = buffer_start;
saved->partial_where = partial_where;
@@ -143,26 +130,26 @@ input_scrub_push(saved_position)
saved->logical_input_file = logical_input_file;
saved->physical_input_line = physical_input_line;
saved->logical_input_line = logical_input_line;
- bcopy (saved->save_source, save_source, sizeof (save_source));
+ bcopy(saved->save_source, save_source, sizeof(save_source));
saved->next_saved_file = next_saved_file;
- saved->input_file_save = input_file_push ();
-
- input_scrub_begin (); /* Reinitialize! */
-
- return (char *)saved;
-}
+ saved->input_file_save = input_file_push();
+
+ input_scrub_begin(); /* Reinitialize! */
+
+ return((char *) saved);
+} /* input_scrub_push() */
char *
-input_scrub_pop (arg)
- char *arg;
+ input_scrub_pop (arg)
+char *arg;
{
register struct input_save *saved;
char *saved_position;
-
+
input_scrub_end (); /* Finish off old buffer */
-
+
saved = (struct input_save *)arg;
-
+
input_file_pop (saved->input_file_save);
saved_position = saved->saved_position;
buffer_start = saved->buffer_start;
@@ -175,57 +162,56 @@ input_scrub_pop (arg)
partial_size = saved->partial_size;
next_saved_file = saved->next_saved_file;
bcopy (save_source, saved->save_source, sizeof (save_source));
-
+
free(arg);
return saved_position;
}
void
-input_scrub_begin ()
+ input_scrub_begin ()
{
- know(strlen(BEFORE_STRING) == BEFORE_SIZE);
- know(strlen(AFTER_STRING) == AFTER_SIZE
- || (AFTER_STRING[0] == '\0' && AFTER_SIZE == 1));
-
- input_file_begin ();
-
- buffer_length = input_file_buffer_size ();
-
- buffer_start = xmalloc((long)(BEFORE_SIZE + buffer_length + buffer_length + AFTER_SIZE));
- bcopy (BEFORE_STRING, buffer_start, (int)BEFORE_SIZE);
-
- /* Line number things. */
- logical_input_line = 0;
- logical_input_file = (char *)NULL;
- physical_input_file = NULL; /* No file read yet. */
- next_saved_file = NULL; /* At EOF, don't pop to any other file */
- do_scrub_begin();
+ know(strlen(BEFORE_STRING) == BEFORE_SIZE);
+ know(strlen(AFTER_STRING) == AFTER_SIZE || (AFTER_STRING[0] == '\0' && AFTER_SIZE == 1));
+
+ input_file_begin ();
+
+ buffer_length = input_file_buffer_size ();
+
+ buffer_start = xmalloc((long)(BEFORE_SIZE + buffer_length + buffer_length + AFTER_SIZE));
+ bcopy (BEFORE_STRING, buffer_start, (int)BEFORE_SIZE);
+
+ /* Line number things. */
+ logical_input_line = 0;
+ logical_input_file = (char *)NULL;
+ physical_input_file = NULL; /* No file read yet. */
+ next_saved_file = NULL; /* At EOF, don't pop to any other file */
+ do_scrub_begin();
}
void
-input_scrub_end ()
+ input_scrub_end ()
{
- if (buffer_start)
- {
- free (buffer_start);
- buffer_start = 0;
- input_file_end ();
- }
+ if (buffer_start)
+ {
+ free (buffer_start);
+ buffer_start = 0;
+ input_file_end ();
+ }
}
/* Start reading input from a new file. */
char * /* Return start of caller's part of buffer. */
-input_scrub_new_file (filename)
- char * filename;
+ input_scrub_new_file (filename)
+char * filename;
{
- input_file_open (filename, !flagseen['f']);
- physical_input_file = filename[0] ? filename : "{standard input}";
- physical_input_line = 0;
-
- partial_size = 0;
- return (buffer_start + BEFORE_SIZE);
+ input_file_open (filename, !flagseen['f']);
+ physical_input_file = filename[0] ? filename : "{standard input}";
+ physical_input_line = 0;
+
+ partial_size = 0;
+ return (buffer_start + BEFORE_SIZE);
}
@@ -234,102 +220,102 @@ input_scrub_new_file (filename)
input_scrub_new_file. */
char *
-input_scrub_include_file (filename, position)
- char *filename;
- char *position;
+ input_scrub_include_file (filename, position)
+char *filename;
+char *position;
{
- next_saved_file = input_scrub_push (position);
- return input_scrub_new_file (filename);
+ next_saved_file = input_scrub_push(position);
+ return input_scrub_new_file (filename);
}
void
-input_scrub_close ()
+ input_scrub_close ()
{
- input_file_close ();
+ input_file_close ();
}
char *
-input_scrub_next_buffer (bufp)
+ input_scrub_next_buffer (bufp)
char **bufp;
{
- register char * limit; /*->just after last char of buffer. */
-
- *bufp = buffer_start + BEFORE_SIZE;
-
+ register char * limit; /*->just after last char of buffer. */
+
+ *bufp = buffer_start + BEFORE_SIZE;
+
#ifdef DONTDEF
- if(preprocess) {
- if(save_buffer) {
- *bufp = save_buffer;
- save_buffer = 0;
- }
- limit = input_file_give_next_buffer(buffer_start+BEFORE_SIZE);
- if (!limit) {
- partial_where = 0;
- if(partial_size)
- as_warn("Partial line at end of file ignored");
- return partial_where;
- }
-
- if(partial_size)
- bcopy(save_source, partial_where,(int)AFTER_SIZE);
- do_scrub(partial_where,partial_size,buffer_start+BEFORE_SIZE,limit-(buffer_start+BEFORE_SIZE),&out_string,&out_length);
- limit=out_string + out_length;
- for(p=limit;*--p!='\n';)
- ;
- p++;
- if(p<=buffer_start+BEFORE_SIZE)
- as_fatal("Source line too long. Please change file '%s' and re-make the assembler.", __FILE__);
-
- partial_where = p;
- partial_size = limit-p;
- bcopy(partial_where, save_source,(int)AFTER_SIZE);
- bcopy(AFTER_STRING, partial_where, (int)AFTER_SIZE);
-
- save_buffer = *bufp;
- *bufp = out_string;
-
- return partial_where;
- }
-
- /* We're not preprocessing. Do the right thing */
-#endif
- if (partial_size)
- {
- bcopy (partial_where, buffer_start + BEFORE_SIZE, (int)partial_size);
- bcopy (save_source, buffer_start + BEFORE_SIZE, (int)AFTER_SIZE);
- }
- limit = input_file_give_next_buffer (buffer_start + BEFORE_SIZE + partial_size);
- if (limit)
- {
- register char * p; /* Find last newline. */
-
- for (p = limit; * -- p != '\n';)
- {
- }
- ++ p;
- if (p <= buffer_start + BEFORE_SIZE)
- {
- as_fatal("Source line too long. Please change file %s then rebuild assembler.", __FILE__);
+ if(preprocess) {
+ if(save_buffer) {
+ *bufp = save_buffer;
+ save_buffer = 0;
+ }
+ limit = input_file_give_next_buffer(buffer_start+BEFORE_SIZE);
+ if (!limit) {
+ partial_where = 0;
+ if(partial_size)
+ as_warn("Partial line at end of file ignored");
+ return partial_where;
+ }
+
+ if(partial_size)
+ bcopy(save_source, partial_where,(int)AFTER_SIZE);
+ do_scrub(partial_where,partial_size,buffer_start+BEFORE_SIZE,limit-(buffer_start+BEFORE_SIZE),&out_string,&out_length);
+ limit=out_string + out_length;
+ for(p=limit;*--p!='\n';)
+ ;
+ p++;
+ if(p<=buffer_start+BEFORE_SIZE)
+ as_fatal("Source line too long. Please change file '%s' and re-make the assembler.", __FILE__);
+
+ partial_where = p;
+ partial_size = limit-p;
+ bcopy(partial_where, save_source,(int)AFTER_SIZE);
+ bcopy(AFTER_STRING, partial_where, (int)AFTER_SIZE);
+
+ save_buffer = *bufp;
+ *bufp = out_string;
+
+ return partial_where;
}
- partial_where = p;
- partial_size = limit - p;
- bcopy (partial_where, save_source, (int)AFTER_SIZE);
- bcopy (AFTER_STRING, partial_where, (int)AFTER_SIZE);
- }
- else
- {
- partial_where = 0;
- if (partial_size > 0)
- {
- as_warn("Partial line at end of file ignored");
- }
- /* If we should pop to another file at EOF, do it. */
- if (next_saved_file)
- {
- *bufp = input_scrub_pop (next_saved_file); /* Pop state */
- /* partial_where is now correct to return, since we popped it. */
- }
- }
- return (partial_where);
+
+ /* We're not preprocessing. Do the right thing */
+#endif
+ if (partial_size)
+ {
+ bcopy (partial_where, buffer_start + BEFORE_SIZE, (int)partial_size);
+ bcopy (save_source, buffer_start + BEFORE_SIZE, (int)AFTER_SIZE);
+ }
+ limit = input_file_give_next_buffer (buffer_start + BEFORE_SIZE + partial_size);
+ if (limit)
+ {
+ register char * p; /* Find last newline. */
+
+ for (p = limit; * -- p != '\n';)
+ {
+ }
+ ++ p;
+ if (p <= buffer_start + BEFORE_SIZE)
+ {
+ as_fatal("Source line too long. Please change file %s then rebuild assembler.", __FILE__);
+ }
+ partial_where = p;
+ partial_size = limit - p;
+ bcopy (partial_where, save_source, (int)AFTER_SIZE);
+ bcopy (AFTER_STRING, partial_where, (int)AFTER_SIZE);
+ }
+ else
+ {
+ partial_where = 0;
+ if (partial_size > 0)
+ {
+ as_warn("Partial line at end of file ignored");
+ }
+ /* If we should pop to another file at EOF, do it. */
+ if (next_saved_file)
+ {
+ *bufp = input_scrub_pop (next_saved_file); /* Pop state */
+ /* partial_where is now correct to return, since we popped it. */
+ }
+ }
+ return (partial_where);
}
/*
@@ -339,16 +325,16 @@ char **bufp;
int
-seen_at_least_1_file () /* TRUE if we opened any file. */
+ seen_at_least_1_file () /* TRUE if we opened any file. */
{
- return (physical_input_file != NULL);
+ return (physical_input_file != NULL);
}
void
-bump_line_counters ()
+ bump_line_counters ()
{
- ++ physical_input_line;
- ++ logical_input_line;
+ ++ physical_input_line;
+ /* ++ logical_input_line; FIXME-now remove this. */
}
/*
@@ -359,8 +345,8 @@ bump_line_counters ()
* If the fname is NULL, we don't change the current logical file name.
*/
void new_logical_line(fname, line_number)
- char *fname; /* DON'T destroy it! We point to it! */
- int line_number;
+char *fname; /* DON'T destroy it! We point to it! */
+int line_number;
{
if (fname) {
logical_input_file = fname;
@@ -378,49 +364,40 @@ void new_logical_line(fname, line_number)
* input source files.
* As a sop to the debugger of AS, pretty-print the offending line.
*/
-void
-as_where()
-{
- char *p;
- line_numberT line;
-
- if (physical_input_file)
- { /* we tried to read SOME source */
- if (input_file_is_open())
- { /* we can still read lines from source */
-#ifdef DONTDEF
- fprintf (stderr," @ physical line %ld., file \"%s\"",
- (long) physical_input_line, physical_input_file);
- fprintf (stderr," @ logical line %ld., file \"%s\"\n",
- (long) logical_input_line, logical_input_file);
- (void)putc(' ', stderr);
- as_howmuch (stderr);
- (void)putc('\n', stderr);
-#else
- p = logical_input_file ? logical_input_file : physical_input_file;
- line = logical_input_line ? logical_input_line : physical_input_line;
- fprintf(stderr,"%s:%u: ", p, line);
-#endif
- }
- else
- {
-#ifdef DONTDEF
- fprintf (stderr," After reading source.\n");
-#else
- p = logical_input_file ? logical_input_file : physical_input_file;
- line = logical_input_line ? logical_input_line : physical_input_line;
- fprintf(stderr, "%s:%d:", p, (int) line);
-#endif
- }
- }
- else
- {
+void as_where() {
+ char *p;
+ line_numberT line;
+
+ if (logical_input_file && (logical_input_line > 0)) {
+ p = logical_input_file;
+ line = logical_input_line;
+ } else {
+ p = physical_input_file;
+ line = physical_input_line;
+ } /* line number should match file name */
+
+ fprintf(stderr, "%s:%u: ", p, line);
+
#ifdef DONTDEF
- fprintf (stderr," Before reading source.\n");
-#else
-#endif
- }
-}
+ if (physical_input_file) {
+ if (input_file_is_open()) { /* we can still read lines from source */
+ fprintf (stderr," @ physical line %ld., file \"%s\"",
+ (long) physical_input_line, physical_input_file);
+ fprintf (stderr," @ logical line %ld., file \"%s\"\n",
+ (long) logical_input_line, logical_input_file);
+ (void)putc(' ', stderr);
+ as_howmuch (stderr);
+ (void)putc('\n', stderr);
+ } else {
+ fprintf(stderr, " After reading source.\n");
+ } /* input file is still open */
+ } else {
+ fprintf(stderr, " Before reading source.\n");
+ } /* we tried to read SOME source */
+#endif /* DONTDEF */
+
+ return;
+} /* as_where() */
@@ -433,39 +410,39 @@ as_where()
* No free '\n' at end of line.
*/
void
-as_howmuch (stream)
- FILE * stream; /* Opened for write please. */
+ as_howmuch (stream)
+FILE * stream; /* Opened for write please. */
{
- register char * p; /* Scan input line. */
- /* register char c; JF unused */
-
- for (p = input_line_pointer - 1; * p != '\n'; --p)
- {
- }
- ++ p; /* p->1st char of line. */
- for (; p <= input_line_pointer; p++)
- {
- /* Assume ASCII. EBCDIC & other micro-computer char sets ignored. */
- /* c = *p & 0xFF; JF unused */
- as_1_char(*p, stream);
- }
+ register char * p; /* Scan input line. */
+ /* register char c; JF unused */
+
+ for (p = input_line_pointer - 1; * p != '\n'; --p)
+ {
+ }
+ ++ p; /* p->1st char of line. */
+ for (; p <= input_line_pointer; p++)
+ {
+ /* Assume ASCII. EBCDIC & other micro-computer char sets ignored. */
+ /* c = *p & 0xFF; JF unused */
+ as_1_char(*p, stream);
+ }
}
static void as_1_char (c,stream)
unsigned int c;
FILE *stream;
{
- if (c > 127)
- {
- (void)putc('%', stream);
- c -= 128;
- }
- if (c < 32)
- {
- (void)putc('^', stream);
- c += '@';
- }
- (void)putc(c, stream);
+ if (c > 127)
+ {
+ (void)putc('%', stream);
+ c -= 128;
+ }
+ if (c < 32)
+ {
+ (void)putc('^', stream);
+ c += '@';
+ }
+ (void)putc(c, stream);
}
/*
generated by cgit v1.1 at 2024-12-21 11:17:59 +0000