1022 lines
20 KiB
C
1022 lines
20 KiB
C
/* listing.c - mainting assembly listings
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Copyright (C) 1991, 1992 Free Software Foundation, Inc.
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/*
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Contributed by Steve Chamberlain
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sac@cygnus.com
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A listing page looks like:
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LISTING_HEADER sourcefilename pagenumber
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TITLE LINE
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SUBTITLE LINE
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linenumber address data source
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linenumber address data source
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linenumber address data source
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linenumber address data source
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If not overridden, the listing commands are:
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.title "stuff"
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Put "stuff" onto the title line
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.sbttl "stuff"
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Put stuff onto the subtitle line
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If these commands come within 10 lines of the top of the page, they
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will affect the page they are on, as well as any subsequent page
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.eject
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Thow a page
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.list
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Increment the enable listing counter
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.nolist
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Decrement the enable listing counter
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.psize Y[,X]
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Set the paper size to X wide and Y high. Setting a psize Y of
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zero will suppress form feeds except where demanded by .eject
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If the counter goes below zero, listing is suppressed.
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Listings are a maintained by read calling various listing_<foo>
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functions. What happens most is that the macro NO_LISTING is not
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defined (from the Makefile), then the macro LISTING_NEWLINE expands
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into a call to listing_newline. The call is done from read.c, every
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time it sees a newline, and -l is on the command line.
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The function listing_newline remembers the frag associated with the
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newline, and creates a new frag - note that this is wasteful, but not
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a big deal, since listing slows things down a lot anyway. The
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function also rememebers when the filename changes.
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When all the input has finished, and gas has had a chance to settle
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down, the listing is output. This is done by running down the list of
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frag/source file records, and opening the files as needed and printing
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out the bytes and chars associated with them.
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The only things which the architecture can change about the listing
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are defined in these macros:
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LISTING_HEADER The name of the architecture
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LISTING_WORD_SIZE The make of the number of bytes in a word, this determines
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the clumping of the output data. eg a value of
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2 makes words look like 1234 5678, whilst 1
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would make the same value look like 12 34 56
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78
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LISTING_LHS_WIDTH Number of words of above size for the lhs
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LISTING_LHS_WIDTH_SECOND Number of words for the data on the lhs
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for the second line
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LISTING_LHS_CONT_LINES Max number of lines to use up for a continutation
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LISTING_RHS_WIDTH Number of chars from the input file to print
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on a line
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*/
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#include "as.h"
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#include <obstack.h>
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#include "input-file.h"
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#include "targ-cpu.h"
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char *malloc();
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#ifndef NO_LISTING
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#ifndef LISTING_HEADER
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#define LISTING_HEADER "GAS LISTING"
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#endif
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#ifndef LISTING_WORD_SIZE
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#define LISTING_WORD_SIZE 4
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#endif
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#ifndef LISTING_LHS_WIDTH
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#define LISTING_LHS_WIDTH 1
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#endif
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#ifndef LISTING_LHS_WIDTH_SECOND
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#define LISTING_LHS_WIDTH_SECOND 1
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#endif
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#ifndef LISTING_RHS_WIDTH
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#define LISTING_RHS_WIDTH 100
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#endif
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#ifndef LISTING_LHS_CONT_LINES
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#define LISTING_LHS_CONT_LINES 4
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#endif
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/* This structure remembers which .s were used */
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typedef struct file_info_struct
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{
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char *filename;
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int linenum;
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FILE *file;
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struct file_info_struct *next;
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int end_pending;
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} file_info_type ;
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/* this structure rememebrs which line from which file goes into which
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frag */
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typedef struct list_info_struct
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{
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/* Frag which this line of source is nearest to */
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fragS *frag;
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/* The actual line in the source file */
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unsigned int line;
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/* Pointer to the file info struct for the file which this line
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belongs to */
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file_info_type *file;
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/* Next in list */
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struct list_info_struct *next;
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/* Pointer to the file info struct for the high level language
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source line that belongs here */
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file_info_type *hll_file;
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/* High level language source line */
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int hll_line;
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/* Pointer to any error message associated with this line */
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char *message;
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enum
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{
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EDICT_NONE,
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EDICT_SBTTL,
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EDICT_TITLE,
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EDICT_NOLIST,
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EDICT_LIST,
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EDICT_EJECT
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} edict;
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char *edict_arg;
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} list_info_type;
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static struct list_info_struct *head;
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struct list_info_struct *listing_tail;
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extern int listing;
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extern unsigned int physical_input_line;
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extern fragS *frag_now;
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static int paper_width = 200;
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static int paper_height = 60;
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/* this static array is used to keep the text of data to be printed
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before the start of the line.
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It is stored so we can give a bit more info on the next line. To much, and large
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initialized arrays will use up lots of paper.
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*/
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static char data_buffer[100];
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static unsigned int data_buffer_size;
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static void
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DEFUN(listing_message,(name, message),
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char *name AND
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char *message)
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{
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unsigned int l = strlen(name) + strlen(message)+1;
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char *n = (char*)malloc(l);
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strcpy(n,name);
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strcat(n,message);
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if(listing_tail != (list_info_type *)NULL)
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{
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listing_tail->message = n;
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}
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}
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void
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DEFUN(listing_warning,(message),
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char *message)
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{
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listing_message("Warning:", message);
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}
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void
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DEFUN(listing_error,(message),
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char *message)
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{
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listing_message("Error:", message);
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}
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static file_info_type *file_info_head;
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static file_info_type *
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DEFUN(file_info, (file_name),
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char *file_name)
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{
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/* Find an entry with this file name */
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file_info_type *p = file_info_head;
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while (p != (file_info_type *)NULL)
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{
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if (strcmp(p->filename, file_name) == 0)
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return p;
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p = p->next;
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}
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/* Make new entry */
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p = (file_info_type *)xmalloc(sizeof(file_info_type));
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p->next = file_info_head;
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file_info_head = p;
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p->filename = xmalloc(strlen(file_name)+1);
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strcpy(p->filename, file_name);
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p->linenum = 0;
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p->end_pending = 0;
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p->file = fopen(p->filename,"rb");
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if (p->file) fgetc(p->file);
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return p;
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}
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static void
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DEFUN_VOID(new_frag)
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{
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frag_wane(frag_now);
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frag_new(0);
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}
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void
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DEFUN(listing_newline,(ps),
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char *ps)
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{
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char *s = ps;
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extern char *file_name;
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static unsigned int last_line =0xffff ;
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list_info_type *new;
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if (physical_input_line != last_line)
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{
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last_line = physical_input_line;
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new_frag();
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new = (list_info_type *)malloc(sizeof(list_info_type));
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new->frag = frag_now;
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new->line = physical_input_line ;
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new->file = file_info(file_name);
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if (listing_tail)
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{
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listing_tail->next = new;
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}
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else
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{
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head = new;
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}
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listing_tail = new;
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new->next = (list_info_type *)NULL;
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new->message = (char *)NULL;
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new->edict = EDICT_NONE;
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new->hll_file = (file_info_type*)NULL;
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new->hll_line = 0;
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new_frag();
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}
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}
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/*
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This function returns the next source line from the file supplied,
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truncated to size. It appends a fake line to the end of each input
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file to make
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*/
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static char *
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DEFUN(buffer_line,(file, line, size),
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file_info_type *file AND
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char *line AND
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unsigned int size)
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{
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unsigned int count = 0;
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int c;
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char *p = line;
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/* If we couldn't open the file, return an empty line */
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if (file->file == (FILE*)NULL)
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{
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return "";
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}
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if (file->linenum == 0)
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rewind(file->file);
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if (file->end_pending == 10) {
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*p ++ = '\n';
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fseek(file->file, 0,0 );
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file->linenum = 0;
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file->end_pending = 0;
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}
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c = fgetc(file->file);
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size -= 1; /* leave room for null */
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while (c != EOF && c != '\n')
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{
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if (count < size)
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*p++ = c;
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count++;
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c= fgetc(file->file);
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}
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if (c == EOF)
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{
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file->end_pending ++;
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*p++ = '.';
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*p++ = '.';
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*p++ = '.';
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}
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file->linenum++;
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*p++ = 0;
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return line;
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}
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static char *fn;
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static unsigned int eject; /* Eject pending */
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static unsigned int page; /* Current page number */
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static char *title; /* current title */
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static char *subtitle; /* current subtitle */
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static unsigned int on_page; /* number of lines printed on current page */
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static void
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DEFUN(listing_page,(list),
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list_info_type *list)
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{
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/* Grope around, see if we can see a title or subtitle edict coming up
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soon (we look down 10 lines of the page and see if it's there)*/
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if ((eject || (on_page >= paper_height)) && paper_height != 0)
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{
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unsigned int c = 10;
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int had_title = 0;
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int had_subtitle = 0;
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page++;
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while (c != 0 && list)
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{
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if (list->edict == EDICT_SBTTL && !had_subtitle)
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{
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had_subtitle = 1;
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subtitle = list->edict_arg;
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}
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if (list->edict == EDICT_TITLE && !had_title)
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{
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had_title = 1;
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title = list->edict_arg;
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}
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list = list->next;
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c--;
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}
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if (page > 1)
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{
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printf("\f");
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}
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printf("%s %s \t\t\tpage %d\n", LISTING_HEADER, fn, page);
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printf("%s\n", title);
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printf("%s\n", subtitle);
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on_page = 3;
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eject = 0;
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}
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}
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static unsigned int
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DEFUN(calc_hex,(list),
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list_info_type *list)
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{
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list_info_type *first = list;
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list_info_type *last = first;
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unsigned int address = ~0;
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fragS *frag;
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fragS *frag_ptr;
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unsigned int byte_in_frag = 0;
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int anything = 0;
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/* Find first frag which says it belongs to this line */
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frag = list->frag;
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while (frag && frag->line != list)
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frag = frag->fr_next;
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frag_ptr = frag;
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data_buffer_size = 0;
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/* Dump all the frags which belong to this line */
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while (frag_ptr != (fragS *)NULL && frag_ptr->line == first)
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{
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/* Print as many bytes from the fixed part as is sensible */
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while(byte_in_frag < frag_ptr->fr_fix && data_buffer_size < sizeof(data_buffer)-10)
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{
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if (address == ~0)
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{
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address = frag_ptr->fr_address;
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}
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sprintf(data_buffer + data_buffer_size,
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"%02X",
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(frag_ptr->fr_literal[byte_in_frag]) & 0xff);
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data_buffer_size += 2;
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byte_in_frag++;
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}
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{
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unsigned int var_rep_max = byte_in_frag;
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unsigned int var_rep_idx = byte_in_frag;
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/* Print as many bytes from the variable part as is sensible */
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while (byte_in_frag < frag_ptr->fr_var * frag_ptr->fr_offset
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&& data_buffer_size < sizeof(data_buffer)-10)
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{
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if (address == ~0)
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{
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address = frag_ptr->fr_address;
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}
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sprintf(data_buffer + data_buffer_size,
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"%02X",
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(frag_ptr->fr_literal[var_rep_idx]) & 0xff);
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#if 0
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data_buffer[data_buffer_size++] = '*';
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data_buffer[data_buffer_size++] = '*';
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#endif
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data_buffer_size +=2;
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var_rep_idx ++;
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byte_in_frag++;
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if (var_rep_idx >= frag_ptr->fr_var)
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var_rep_idx = var_rep_max;
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}
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}
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frag_ptr = frag_ptr->fr_next;
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}
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data_buffer[data_buffer_size++] = 0;
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return address;
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}
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static void
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DEFUN(print_lines,(list, string, address),
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list_info_type *list AND
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char *string AND
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unsigned int address)
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{
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unsigned int idx;
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unsigned int nchars;
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unsigned int lines;
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unsigned int byte_in_word =0;
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char *src = data_buffer;
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/* Print the stuff on the first line */
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listing_page(list);
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nchars = (LISTING_WORD_SIZE*2 +1) * LISTING_LHS_WIDTH ;
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/* Print the hex for the first line */
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if (address == ~0)
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{
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printf("% 4d ", list->line);
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for (idx = 0; idx < nchars; idx++)
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printf(" ");
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printf("\t%s\n", string ? string : "");
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on_page++;
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listing_page(0);
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}
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else
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{
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if (had_errors())
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{
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printf("% 4d ???? ", list->line);
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}
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else
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{
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printf("% 4d %04x ", list->line, address);
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}
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/* And the data to go along with it */
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idx = 0;
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while (*src && idx < nchars)
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{
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printf("%c%c", src[0], src[1]);
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src += 2;
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byte_in_word++;
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if (byte_in_word == LISTING_WORD_SIZE)
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{
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printf(" ");
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idx++;
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byte_in_word = 0;
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}
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idx+=2;
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}
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for (;idx < nchars; idx++)
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printf(" ");
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printf("\t%s\n", string ? string : "");
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on_page++;
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listing_page(list);
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if (list->message)
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{
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printf("**** %s\n",list->message);
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listing_page(list);
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on_page++;
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}
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for (lines = 0;
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lines < LISTING_LHS_CONT_LINES
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&& *src;
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lines++) {
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nchars = ((LISTING_WORD_SIZE*2) +1) * LISTING_LHS_WIDTH_SECOND -1;
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idx = 0;
|
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/* Print any more lines of data, but more compactly */
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printf("% 4d ", list->line);
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while (*src && idx < nchars)
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{
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printf("%c%c", src[0], src[1]);
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src+=2;
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idx+=2;
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byte_in_word++;
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if (byte_in_word == LISTING_WORD_SIZE)
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{
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printf(" ");
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idx++;
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byte_in_word = 0;
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}
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}
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|
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printf("\n");
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on_page++;
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listing_page(list);
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}
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|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
static void
|
|
DEFUN_VOID(list_symbol_table)
|
|
{
|
|
extern symbolS *symbol_rootP;
|
|
|
|
symbolS *ptr ;
|
|
eject = 1;
|
|
listing_page(0);
|
|
printf("DEFINED SYMBOLS\n");
|
|
on_page++;
|
|
|
|
for (ptr = symbol_rootP; ptr != (symbolS*)NULL; ptr = symbol_next(ptr))
|
|
{
|
|
if (ptr->sy_frag->line)
|
|
{
|
|
if (S_GET_NAME(ptr))
|
|
{
|
|
|
|
if (strlen(S_GET_NAME(ptr)))
|
|
{
|
|
printf("%20s:%-5d %2d:%08x %s \n",
|
|
ptr->sy_frag->line->file->filename,
|
|
ptr->sy_frag->line->line,
|
|
S_GET_SEGMENT(ptr),
|
|
S_GET_VALUE(ptr),
|
|
S_GET_NAME(ptr));
|
|
}
|
|
|
|
else
|
|
{
|
|
printf("%20s:%-5d %2d:%08x\n",
|
|
ptr->sy_frag->line->file->filename,
|
|
ptr->sy_frag->line->line,
|
|
S_GET_SEGMENT(ptr),
|
|
S_GET_VALUE(ptr));
|
|
|
|
|
|
}
|
|
|
|
on_page++;
|
|
listing_page(0);
|
|
}
|
|
}
|
|
|
|
}
|
|
printf("\n");
|
|
on_page++;
|
|
listing_page(0);
|
|
printf("UNDEFINED SYMBOLS\n");
|
|
on_page++;
|
|
listing_page(0);
|
|
|
|
for (ptr = symbol_rootP; ptr != (symbolS*)NULL; ptr = symbol_next(ptr))
|
|
{
|
|
if (S_GET_NAME(ptr) && strlen(S_GET_NAME(ptr)) != 0)
|
|
{
|
|
if (ptr->sy_frag->line == 0)
|
|
{
|
|
printf("%s\n", S_GET_NAME(ptr));
|
|
on_page++;
|
|
listing_page(0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
DEFUN(print_source,(current_file, list, buffer, width),
|
|
file_info_type *current_file AND
|
|
list_info_type *list AND
|
|
char *buffer AND
|
|
unsigned int width)
|
|
{
|
|
if (current_file->file) {
|
|
while (current_file->linenum < list->hll_line)
|
|
{
|
|
char * p = buffer_line(current_file, buffer, width);
|
|
printf("%4d:%-13s **** %s\n", current_file->linenum, current_file->filename, p);
|
|
on_page++;
|
|
listing_page(list);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Sometimes the user doesn't want to be bothered by the debugging
|
|
records inserted by the compiler, see if the line is suspicioous */
|
|
|
|
static int
|
|
DEFUN(debugging_pseudo,(line),
|
|
char *line)
|
|
{
|
|
while (isspace(*line))
|
|
line++;
|
|
|
|
if(*line != '.') return 0;
|
|
|
|
line++;
|
|
|
|
if (strncmp(line, "def",3) == 0) return 1;
|
|
if (strncmp(line, "val",3) == 0) return 1;
|
|
if (strncmp(line, "scl",3) == 0) return 1;
|
|
if (strncmp(line, "line",4) == 0) return 1;
|
|
if (strncmp(line, "endef",5) == 0) return 1;
|
|
if (strncmp(line, "ln",2) ==0) return 1;
|
|
if (strncmp(line, "type",4) ==0) return 1;
|
|
if (strncmp(line, "size",4) == 0) return 1;
|
|
if (strncmp(line, "dim",3) ==0) return 1;
|
|
if (strncmp(line, "tag",3) == 0) return 1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
void
|
|
DEFUN(listing_listing,(name),
|
|
char *name)
|
|
{
|
|
list_info_type *list = head;
|
|
file_info_type *current_hll_file = (file_info_type *)NULL;
|
|
|
|
unsigned int page= 1;
|
|
unsigned int prev = 0;
|
|
char *message;
|
|
char *buffer;
|
|
char *p;
|
|
unsigned int addr = 0;
|
|
int on_page = 0;
|
|
int show_listing = 1;
|
|
unsigned int width;
|
|
|
|
buffer = malloc(LISTING_RHS_WIDTH);
|
|
eject = 1;
|
|
list = head;
|
|
|
|
while (list != (list_info_type *)NULL && 0)
|
|
{
|
|
if (list->next)
|
|
list->frag = list->next->frag;
|
|
list = list->next;
|
|
|
|
}
|
|
|
|
list = head->next;
|
|
|
|
|
|
while ( list)
|
|
{
|
|
width = LISTING_RHS_WIDTH > paper_width ? paper_width :
|
|
LISTING_RHS_WIDTH;
|
|
|
|
switch (list->edict) {
|
|
case EDICT_LIST:
|
|
show_listing++;
|
|
break;
|
|
case EDICT_NOLIST:
|
|
show_listing--;
|
|
break;
|
|
case EDICT_EJECT:
|
|
break;
|
|
case EDICT_NONE:
|
|
break;
|
|
case EDICT_TITLE:
|
|
title = list->edict_arg;
|
|
break;
|
|
case EDICT_SBTTL:
|
|
subtitle = list->edict_arg;
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
|
|
if (show_listing > 0)
|
|
{
|
|
/* Scan down the list and print all the stuff which can be done
|
|
with this line (or lines) */
|
|
message = 0;
|
|
|
|
if (list->hll_file)
|
|
{
|
|
current_hll_file = list->hll_file;
|
|
}
|
|
|
|
if (current_hll_file && list->hll_line && listing & LISTING_HLL)
|
|
{
|
|
print_source(current_hll_file, list, buffer, width);
|
|
}
|
|
|
|
p = buffer_line(list->file, buffer, width);
|
|
|
|
if (! ((listing & LISTING_NODEBUG) && debugging_pseudo(p)))
|
|
{
|
|
print_lines(list, p, calc_hex(list));
|
|
}
|
|
|
|
if (list->edict == EDICT_EJECT)
|
|
{
|
|
eject = 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
|
|
p = buffer_line(list->file, buffer, width);
|
|
}
|
|
|
|
list = list->next;
|
|
}
|
|
free(buffer);
|
|
}
|
|
|
|
void
|
|
DEFUN(listing_print,(name),
|
|
char *name)
|
|
{
|
|
title = "";
|
|
subtitle = "";
|
|
|
|
if (listing & LISTING_NOFORM)
|
|
{
|
|
paper_height = 0;
|
|
}
|
|
|
|
if (listing & LISTING_LISTING)
|
|
{
|
|
listing_listing(name);
|
|
|
|
}
|
|
if (listing & LISTING_SYMBOLS)
|
|
{
|
|
list_symbol_table();
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
DEFUN(listing_file,(name),
|
|
char *name)
|
|
{
|
|
fn = name;
|
|
}
|
|
|
|
void
|
|
DEFUN_VOID(listing_eject)
|
|
{
|
|
listing_tail->edict = EDICT_EJECT;
|
|
}
|
|
|
|
void
|
|
DEFUN_VOID(listing_flags)
|
|
{
|
|
while ( (*input_line_pointer++) && (*input_line_pointer != '\n') )
|
|
input_line_pointer++;
|
|
|
|
}
|
|
void
|
|
DEFUN(listing_list,(on),
|
|
unsigned int on)
|
|
{
|
|
listing_tail->edict = on ? EDICT_LIST : EDICT_NOLIST;
|
|
}
|
|
|
|
|
|
void
|
|
DEFUN_VOID(listing_psize)
|
|
{
|
|
paper_height = get_absolute_expression();
|
|
|
|
if (paper_height < 0 || paper_height > 1000)
|
|
{
|
|
paper_height = 0;
|
|
as_warn("strange paper height, set to no form");
|
|
}
|
|
if (*input_line_pointer == ',')
|
|
{
|
|
input_line_pointer++;
|
|
paper_width = get_absolute_expression();
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
DEFUN(listing_title,(depth),
|
|
unsigned int depth)
|
|
{
|
|
char *start;
|
|
char *title;
|
|
unsigned int length;
|
|
|
|
SKIP_WHITESPACE();
|
|
if (*input_line_pointer=='\"') {
|
|
input_line_pointer++;
|
|
start = input_line_pointer;
|
|
|
|
while (*input_line_pointer)
|
|
{
|
|
if (*input_line_pointer == '\"')
|
|
{
|
|
length = input_line_pointer - start;
|
|
title = malloc(length + 1);
|
|
memcpy(title, start, length);
|
|
title[length] = 0;
|
|
listing_tail->edict = depth ? EDICT_SBTTL : EDICT_TITLE;
|
|
listing_tail->edict_arg = title;
|
|
input_line_pointer++;
|
|
demand_empty_rest_of_line();
|
|
return;
|
|
}
|
|
else if (*input_line_pointer == '\n')
|
|
{
|
|
as_bad("New line in title");
|
|
demand_empty_rest_of_line();
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
input_line_pointer++;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
as_bad("expecting title in quotes");
|
|
}
|
|
}
|
|
|
|
|
|
|
|
void
|
|
DEFUN(listing_source_line,(line),
|
|
unsigned int line)
|
|
{
|
|
new_frag();
|
|
listing_tail->hll_line = line;
|
|
new_frag();
|
|
|
|
}
|
|
|
|
void
|
|
DEFUN(listing_source_file,(file),
|
|
char *file)
|
|
{
|
|
listing_tail->hll_file = file_info(file);
|
|
}
|
|
|
|
|
|
|
|
#else
|
|
|
|
|
|
/* Dummy functions for when compiled without listing enabled */
|
|
|
|
void
|
|
DEFUN_VOID(listing_flags)
|
|
{
|
|
s_ignore();
|
|
}
|
|
|
|
void DEFUN_VOID(listing_list)
|
|
{
|
|
s_ignore();
|
|
}
|
|
|
|
void DEFUN_VOID(listing_eject)
|
|
{
|
|
s_ignore();
|
|
}
|
|
void DEFUN_VOID(listing_psize)
|
|
{
|
|
s_ignore();
|
|
}
|
|
|
|
void DEFUN(listing_title, (depth),
|
|
unsigned int depth)
|
|
{
|
|
s_ignore();
|
|
}
|
|
void
|
|
DEFUN(listing_file,(name),
|
|
char *name)
|
|
{
|
|
|
|
}
|
|
|
|
void DEFUN(listing_newline,(name),
|
|
char *name)
|
|
{
|
|
|
|
}
|
|
|
|
void DEFUN(listing_source_line,(n),
|
|
unsigned int n)
|
|
{
|
|
|
|
}
|
|
void DEFUN(listing_source_file, (n),
|
|
char *n)
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|
|
|