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Diffstat (limited to 'gnu/gas/input-scrub.c')
| -rw-r--r-- | gnu/gas/input-scrub.c | 427 |
1 files changed, 0 insertions, 427 deletions
diff --git a/gnu/gas/input-scrub.c b/gnu/gas/input-scrub.c deleted file mode 100644 index 71af8a0bf809..000000000000 --- a/gnu/gas/input-scrub.c +++ /dev/null @@ -1,427 +0,0 @@ -/*- - * This code is derived from software copyrighted by the Free Software - * Foundation. - * - * Modified 1991 by Donn Seeley at UUNET Technologies, Inc. - */ - -#ifndef lint -static char sccsid[] = "@(#)input-scrub.c 6.4 (Berkeley) 5/8/91"; -#endif /* not lint */ - -/* input_scrub.c - layer between app and the rest of the world - Copyright (C) 1987 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. */ - -#include "as.h" -#include "read.h" -#include "input-file.h" - -/* - * O/S independent module to supply buffers of sanitised source code - * to rest of assembler. We get raw input data of some length. - * Also looks after line numbers, for e.g. error messages. - * This module used to do the sanitising, but now a pre-processor program - * (app) does that job so this module is degenerate. - * Now input is pre-sanitised, so we only worry about finding the - * last partial line. A buffer of full lines is returned to caller. - * The last partial line begins the next buffer we build and return to caller. - * The buffer returned to caller is preceeded by BEFORE_STRING and followed - * by AFTER_STRING. The last character before AFTER_STRING is a newline. - */ - -/* - * We expect the following sanitation has already been done. - * - * No comments, reduce a comment to a space. - * Reduce a tab to a space unless it is 1st char of line. - * All multiple tabs and spaces collapsed into 1 char. Tab only - * legal if 1st char of line. - * # line file statements converted to .line x;.file y; statements. - * Escaped newlines at end of line: remove them but add as many newlines - * to end of statement as you removed in the middle, to synch line numbers. - */ - -#define BEFORE_STRING ("\n") -#define AFTER_STRING ("\0") /* bcopy of 0 chars might choke. */ -#define BEFORE_SIZE (1) -#define AFTER_SIZE (1) - -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. */ -static int buffer_length; /* What is the largest size buffer that */ - /* input_file_give_next_buffer() could */ - /* return to us? */ - -static void as_1_char (); - -/* -We never have more than one source file open at once. -We may, however, read more than 1 source file in an assembly. -NULL means we have no file open right now. -*/ - - -/* -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. -*/ - -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. */ - -static -line_numberT physical_input_line, - logical_input_line; - -void -input_scrub_begin () -{ - know( strlen(BEFORE_STRING) == BEFORE_SIZE ); - know( strlen( AFTER_STRING) == AFTER_SIZE ); - - 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. */ - do_scrub_begin(); -} - -void -input_scrub_end () -{ - input_file_end (); -} - -char * /* Return start of caller's part of buffer. */ -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); -} - -char * -input_scrub_next_buffer (bufp) -char **bufp; -{ - register char * limit; /* -> just after last char of buffer. */ - -#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__); - } - 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" ); - } - } - return (partial_where); -} - -/* - * The remaining part of this file deals with line numbers, error - * messages and so on. - */ - - -int -seen_at_least_1_file () /* TRUE if we opened any file. */ -{ - return (physical_input_file != NULL); -} - -void -bump_line_counters () -{ - ++ physical_input_line; - ++ logical_input_line; -} - -/* - * new_logical_line() - * - * Tells us what the new logical line number and file are. - * If the line_number is <0, we don't change the current logical line number. - * 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; -{ - if ( fname ) - { - logical_input_file = fname; - } - if ( line_number >= 0 ) - { - logical_input_line = line_number; - } -} - -/* - * a s _ w h e r e ( ) - * - * Write a line to stderr locating where we are in reading - * 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:unknown:", p); -#endif - } - } - else - { -#ifdef DONTDEF - fprintf (stderr," Before reading source.\n"); -#else -#endif - } -} - -/* - * Support for source file debugging. These functions handle - * logical lines and logical files. - */ -static char *saved_file; -static int saved_len; -static line_numberT saved_line; - -void -filestab() -{ - char *file; - int len; - - if (!physical_input_file || - !input_file_is_open()) - return; - - file = logical_input_file ? logical_input_file : physical_input_file; - - if (saved_file == 0 || strcmp(file, saved_file) != 0) - { - stabs(file); - len = strlen(file) + 1; - if (len > saved_len) - { - if (saved_file == 0) - saved_file = xmalloc(len); - else - saved_file = xrealloc(saved_file, len); - memcpy(saved_file, file, len); - saved_len = len; - } - else - strcpy(saved_file, file); - saved_line = 0; - } -} - -void -funcstab(func) - char *func; -{ - if (now_seg != SEG_TEXT) - return; - - filestab(); - stabf(func); -} - -void -linestab() -{ - line_numberT line; - - if (now_seg != SEG_TEXT) - return; - - filestab(); - - line = logical_input_line ? logical_input_line : physical_input_line; - - if (saved_line == 0 || line != saved_line) - { - stabd(line); - saved_line = line; - } -} - -/* - * a s _ h o w m u c h ( ) - * - * Output to given stream how much of line we have scanned so far. - * Assumes we have scanned up to and including input_line_pointer. - * No free '\n' at end of line. - */ -void -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); - } -} - -static void -as_1_char (c,stream) - unsigned char c; - FILE * stream; -{ - if ( c > 127 ) - { - (void)putc( '%', stream); - c -= 128; - } - if ( c < 32 ) - { - (void)putc( '^', stream); - c += '@'; - } - (void)putc( c, stream); -} - -/* end: input_scrub.c */ |
