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authorRichard Henderson <rth@redhat.com>1999-05-03 07:29:11 +0000
committerRichard Henderson <rth@redhat.com>1999-05-03 07:29:11 +0000
commit252b5132c753830d5fd56823373aed85f2a0db63 (patch)
tree1af963bfd8d3e55167b81def4207f175eaff3a56 /gas/listing.c
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19990502 sourceware importbinu_ss_19990502
Diffstat (limited to 'gas/listing.c')
-rw-r--r--gas/listing.c1420
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diff --git a/gas/listing.c b/gas/listing.c
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--- /dev/null
+++ b/gas/listing.c
@@ -0,0 +1,1420 @@
+/* listing.c - mainting assembly listings
+ Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 1999
+ 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)
+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, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
+
+/*
+ Contributed by Steve Chamberlain
+ sac@cygnus.com
+
+
+ A listing page looks like:
+
+ LISTING_HEADER sourcefilename pagenumber
+ TITLE LINE
+ SUBTITLE LINE
+ linenumber address data source
+ linenumber address data source
+ linenumber address data source
+ linenumber address data source
+
+ If not overridden, the listing commands are:
+
+ .title "stuff"
+ Put "stuff" onto the title line
+ .sbttl "stuff"
+ Put stuff onto the subtitle line
+
+ If these commands come within 10 lines of the top of the page, they
+ will affect the page they are on, as well as any subsequent page
+
+ .eject
+ Thow a page
+ .list
+ Increment the enable listing counter
+ .nolist
+ Decrement the enable listing counter
+
+ .psize Y[,X]
+ Set the paper size to X wide and Y high. Setting a psize Y of
+ zero will suppress form feeds except where demanded by .eject
+
+ If the counter goes below zero, listing is suppressed.
+
+
+ Listings are a maintained by read calling various listing_<foo>
+ functions. What happens most is that the macro NO_LISTING is not
+ defined (from the Makefile), then the macro LISTING_NEWLINE expands
+ into a call to listing_newline. The call is done from read.c, every
+ time it sees a newline, and -l is on the command line.
+
+ The function listing_newline remembers the frag associated with the
+ newline, and creates a new frag - note that this is wasteful, but not
+ a big deal, since listing slows things down a lot anyway. The
+ function also rememebers when the filename changes.
+
+ When all the input has finished, and gas has had a chance to settle
+ down, the listing is output. This is done by running down the list of
+ frag/source file records, and opening the files as needed and printing
+ out the bytes and chars associated with them.
+
+ The only things which the architecture can change about the listing
+ are defined in these macros:
+
+ LISTING_HEADER The name of the architecture
+ LISTING_WORD_SIZE The make of the number of bytes in a word, this determines
+ the clumping of the output data. eg a value of
+ 2 makes words look like 1234 5678, whilst 1
+ would make the same value look like 12 34 56
+ 78
+ LISTING_LHS_WIDTH Number of words of above size for the lhs
+
+ LISTING_LHS_WIDTH_SECOND Number of words for the data on the lhs
+ for the second line
+
+ LISTING_LHS_CONT_LINES Max number of lines to use up for a continutation
+ LISTING_RHS_WIDTH Number of chars from the input file to print
+ on a line
+*/
+
+#include <ctype.h>
+
+#include "as.h"
+#include <obstack.h>
+#include "input-file.h"
+#include "subsegs.h"
+
+#ifndef NO_LISTING
+
+#ifndef LISTING_HEADER
+#define LISTING_HEADER "GAS LISTING"
+#endif
+#ifndef LISTING_WORD_SIZE
+#define LISTING_WORD_SIZE 4
+#endif
+#ifndef LISTING_LHS_WIDTH
+#define LISTING_LHS_WIDTH 1
+#endif
+#ifndef LISTING_LHS_WIDTH_SECOND
+#define LISTING_LHS_WIDTH_SECOND 1
+#endif
+#ifndef LISTING_RHS_WIDTH
+#define LISTING_RHS_WIDTH 100
+#endif
+#ifndef LISTING_LHS_CONT_LINES
+#define LISTING_LHS_CONT_LINES 4
+#endif
+
+/* This structure remembers which .s were used */
+typedef struct file_info_struct
+{
+ struct file_info_struct * next;
+ char * filename;
+ long pos;
+ unsigned int linenum;
+ int at_end;
+}
+file_info_type;
+
+/* This structure rememebrs which line from which file goes into which
+ frag */
+struct list_info_struct
+{
+ /* Frag which this line of source is nearest to */
+ fragS * frag;
+
+ /* The actual line in the source file */
+ unsigned int line;
+ /* Pointer to the file info struct for the file which this line
+ belongs to */
+ file_info_type * file;
+
+ /* The expanded text of any macro that may have been executing. */
+ char * line_contents;
+
+ /* Next in list */
+ struct list_info_struct * next;
+
+ /* Pointer to the file info struct for the high level language
+ source line that belongs here */
+ file_info_type * hll_file;
+ /* High level language source line */
+ unsigned int hll_line;
+
+ /* Pointer to any error message associated with this line */
+ char * message;
+
+ enum
+ {
+ EDICT_NONE,
+ EDICT_SBTTL,
+ EDICT_TITLE,
+ EDICT_NOLIST,
+ EDICT_LIST,
+ EDICT_NOLIST_NEXT,
+ EDICT_EJECT
+ } edict;
+ char * edict_arg;
+
+ /* Nonzero if this line is to be omitted because it contains
+ debugging information. This can become a flags field if we come
+ up with more information to store here. */
+ int debugging;
+};
+
+typedef struct list_info_struct list_info_type;
+
+
+int listing_lhs_width = LISTING_LHS_WIDTH;
+int listing_lhs_width_second = LISTING_LHS_WIDTH_SECOND;
+int listing_lhs_cont_lines = LISTING_LHS_CONT_LINES;
+int listing_rhs_width = LISTING_RHS_WIDTH;
+
+struct list_info_struct * listing_tail;
+
+static file_info_type * file_info_head;
+static file_info_type * last_open_file_info;
+static FILE * last_open_file;
+static struct list_info_struct * head;
+static int paper_width = 200;
+static int paper_height = 60;
+
+extern int listing;
+
+/* File to output listings to. */
+static FILE * list_file;
+
+/* This static array is used to keep the text of data to be printed
+ before the start of the line. */
+
+#define MAX_BYTES \
+ (((LISTING_WORD_SIZE * 2) + 1) * listing_lhs_width \
+ + ((((LISTING_WORD_SIZE * 2) + 1) * listing_lhs_width_second) \
+ * listing_lhs_cont_lines) \
+ + 20)
+
+static char * data_buffer;
+
+/* Prototypes. */
+static void listing_message PARAMS ((const char *name, const char *message));
+static file_info_type * file_info PARAMS ((const char *file_name));
+static void new_frag PARAMS ((void));
+static char * buffer_line PARAMS ((file_info_type *file,
+ char *line, unsigned int size));
+static void listing_page PARAMS ((list_info_type *list));
+static unsigned int calc_hex PARAMS ((list_info_type *list));
+static void print_lines PARAMS ((list_info_type *, unsigned int,
+ char *, unsigned int));
+static void list_symbol_table PARAMS ((void));
+static void print_source PARAMS ((file_info_type *current_file,
+ list_info_type *list,
+ char *buffer,
+ unsigned int width));
+static int debugging_pseudo PARAMS ((list_info_type *, const char *));
+static void listing_listing PARAMS ((char *name));
+
+
+static void
+listing_message (name, message)
+ const char *name;
+ const char *message;
+{
+ unsigned int l = strlen (name) + strlen (message) + 1;
+ char *n = (char *) xmalloc (l);
+ strcpy (n, name);
+ strcat (n, message);
+ if (listing_tail != (list_info_type *) NULL)
+ {
+ listing_tail->message = n;
+ }
+}
+
+void
+listing_warning (message)
+ const char *message;
+{
+ listing_message (_("Warning:"), message);
+}
+
+void
+listing_error (message)
+ const char *message;
+{
+ listing_message (_("Error:"), message);
+}
+
+static file_info_type *
+file_info (file_name)
+ const char *file_name;
+{
+ /* Find an entry with this file name */
+ file_info_type *p = file_info_head;
+
+ while (p != (file_info_type *) NULL)
+ {
+ if (strcmp (p->filename, file_name) == 0)
+ return p;
+ p = p->next;
+ }
+
+ /* Make new entry */
+
+ p = (file_info_type *) xmalloc (sizeof (file_info_type));
+ p->next = file_info_head;
+ file_info_head = p;
+ p->filename = xmalloc ((unsigned long) strlen (file_name) + 1);
+ strcpy (p->filename, file_name);
+ p->pos = 0;
+ p->linenum = 0;
+ p->at_end = 0;
+
+ return p;
+}
+
+
+static void
+new_frag ()
+{
+
+ frag_wane (frag_now);
+ frag_new (0);
+
+}
+
+void
+listing_newline (ps)
+ char *ps;
+{
+ char *file;
+ unsigned int line;
+ static unsigned int last_line = 0xffff;
+ static char *last_file = NULL;
+ list_info_type *new = NULL;
+
+ if (listing == 0)
+ return;
+
+ if (now_seg == absolute_section)
+ return;
+
+#ifdef OBJ_ELF
+ /* In ELF, anything in a section beginning with .debug or .line is
+ considered to be debugging information. This includes the
+ statement which switches us into the debugging section, which we
+ can only set after we are already in the debugging section. */
+ if ((listing & LISTING_NODEBUG) != 0
+ && listing_tail != NULL
+ && ! listing_tail->debugging)
+ {
+ const char *segname;
+
+ segname = segment_name (now_seg);
+ if (strncmp (segname, ".debug", sizeof ".debug" - 1) == 0
+ || strncmp (segname, ".line", sizeof ".line" - 1) == 0)
+ listing_tail->debugging = 1;
+ }
+#endif
+
+ as_where (&file, &line);
+ if (ps == NULL)
+ {
+ if (line == last_line && !(last_file && file && strcmp (file, last_file)))
+ return;
+
+ new = (list_info_type *) xmalloc (sizeof (list_info_type));
+
+ /* Detect if we are reading from stdin by examining the file
+ name returned by as_where().
+
+ [FIXME: We rely upon the name in the strcmp below being the
+ same as the one used by input_scrub_new_file(), if that is
+ not true, then this code will fail].
+
+ If we are reading from stdin, then we need to save each input line
+ here (assuming of course that we actually have a line of input to read),
+ so that it can be displayed in the listing that is produced at the end
+ of the assembly. */
+ if (strcmp (file, _("{standard input}")) == 0
+ && input_line_pointer != NULL)
+ {
+ char * copy;
+ int len;
+ int seen_quote = 0;
+
+ for (copy = input_line_pointer - 1;
+ * copy && (seen_quote
+ || (! is_end_of_line [(unsigned char) * copy]));
+ copy ++)
+ if (* copy == '"' && copy[-1] != '\\')
+ seen_quote = ! seen_quote;
+
+ len = (copy - input_line_pointer) + 2;
+
+ copy = xmalloc (len);
+
+ if (copy != NULL)
+ {
+ char * src = input_line_pointer - 1;
+ char * dest = copy;
+
+ while (--len)
+ {
+ char c = * src ++;
+
+ /* Omit control characters in the listing. */
+ if (isascii (c) && ! iscntrl (c))
+ * dest ++ = c;
+ }
+
+ *dest = 0;
+ }
+
+ new->line_contents = copy;
+ }
+ else
+ new->line_contents = NULL;
+ }
+ else
+ {
+ new = (list_info_type *) xmalloc (sizeof (list_info_type));
+ new->line_contents = ps;
+ }
+
+ last_line = line;
+ last_file = file;
+
+ new_frag ();
+
+ if (listing_tail)
+ listing_tail->next = new;
+ else
+ head = new;
+
+ listing_tail = new;
+
+ new->frag = frag_now;
+ new->line = line;
+ new->file = file_info (file);
+ new->next = (list_info_type *) NULL;
+ new->message = (char *) NULL;
+ new->edict = EDICT_NONE;
+ new->hll_file = (file_info_type *) NULL;
+ new->hll_line = 0;
+ new->debugging = 0;
+
+ new_frag ();
+
+#ifdef OBJ_ELF
+ /* In ELF, anything in a section beginning with .debug or .line is
+ considered to be debugging information. */
+ if ((listing & LISTING_NODEBUG) != 0)
+ {
+ const char *segname;
+
+ segname = segment_name (now_seg);
+ if (strncmp (segname, ".debug", sizeof ".debug" - 1) == 0
+ || strncmp (segname, ".line", sizeof ".line" - 1) == 0)
+ new->debugging = 1;
+ }
+#endif
+}
+
+/* Attach all current frags to the previous line instead of the
+ current line. This is called by the MIPS backend when it discovers
+ that it needs to add some NOP instructions; the added NOP
+ instructions should go with the instruction that has the delay, not
+ with the new instruction. */
+
+void
+listing_prev_line ()
+{
+ list_info_type *l;
+ fragS *f;
+
+ if (head == (list_info_type *) NULL
+ || head == listing_tail)
+ return;
+
+ new_frag ();
+
+ for (l = head; l->next != listing_tail; l = l->next)
+ ;
+
+ for (f = frchain_now->frch_root; f != (fragS *) NULL; f = f->fr_next)
+ if (f->line == listing_tail)
+ f->line = l;
+
+ listing_tail->frag = frag_now;
+ new_frag ();
+}
+
+/*
+ This function returns the next source line from the file supplied,
+ truncated to size. It appends a fake line to the end of each input
+ file to make
+*/
+
+static char *
+buffer_line (file, line, size)
+ file_info_type * file;
+ char *line;
+ unsigned int size;
+{
+ unsigned int count = 0;
+ int c;
+
+ char *p = line;
+
+ /* If we couldn't open the file, return an empty line */
+ if (file->at_end)
+ return "";
+
+ /* Check the cache and see if we last used this file. */
+ if (!last_open_file_info || file != last_open_file_info)
+ {
+ if (last_open_file)
+ {
+ last_open_file_info->pos = ftell (last_open_file);
+ fclose (last_open_file);
+ }
+
+ last_open_file_info = file;
+ last_open_file = fopen (file->filename, "r");
+ if (last_open_file == NULL)
+ {
+ file->at_end = 1;
+ return "";
+ }
+
+ /* Seek to where we were last time this file was open. */
+ if (file->pos)
+ fseek(last_open_file, file->pos, SEEK_SET);
+ }
+
+ c = fgetc (last_open_file);
+
+ size -= 1; /* leave room for null */
+
+ while (c != EOF && c != '\n')
+ {
+ if (count < size)
+ *p++ = c;
+ count++;
+
+ c = fgetc (last_open_file);
+
+ }
+ if (c == EOF)
+ {
+ file->at_end = 1;
+ *p++ = '.';
+ *p++ = '.';
+ *p++ = '.';
+ }
+ file->linenum++;
+ *p++ = 0;
+ return line;
+}
+
+
+static const char *fn;
+
+static unsigned int eject; /* Eject pending */
+static unsigned int page; /* Current page number */
+static char *title; /* current title */
+static char *subtitle; /* current subtitle */
+static unsigned int on_page; /* number of lines printed on current page */
+
+
+static void
+listing_page (list)
+ list_info_type *list;
+{
+ /* Grope around, see if we can see a title or subtitle edict coming up
+ soon (we look down 10 lines of the page and see if it's there)*/
+ if ((eject || (on_page >= (unsigned int) paper_height)) && paper_height != 0)
+ {
+ unsigned int c = 10;
+ int had_title = 0;
+ int had_subtitle = 0;
+
+ page++;
+
+ while (c != 0 && list)
+ {
+ if (list->edict == EDICT_SBTTL && !had_subtitle)
+ {
+ had_subtitle = 1;
+ subtitle = list->edict_arg;
+ }
+ if (list->edict == EDICT_TITLE && !had_title)
+ {
+ had_title = 1;
+ title = list->edict_arg;
+ }
+ list = list->next;
+ c--;
+ }
+
+
+ if (page > 1)
+ {
+ fprintf (list_file, "\f");
+ }
+
+ fprintf (list_file, "%s %s \t\t\tpage %d\n", LISTING_HEADER, fn, page);
+ fprintf (list_file, "%s\n", title);
+ fprintf (list_file, "%s\n", subtitle);
+ on_page = 3;
+ eject = 0;
+ }
+}
+
+
+static unsigned int
+calc_hex (list)
+ list_info_type * list;
+{
+ int data_buffer_size;
+ list_info_type *first = list;
+ unsigned int address = ~ (unsigned int) 0;
+ fragS *frag;
+ fragS *frag_ptr;
+ unsigned int byte_in_frag;
+
+ /* Find first frag which says it belongs to this line */
+ frag = list->frag;
+ while (frag && frag->line != list)
+ frag = frag->fr_next;
+
+ frag_ptr = frag;
+
+ data_buffer_size = 0;
+
+ /* Dump all the frags which belong to this line */
+ while (frag_ptr != (fragS *) NULL && frag_ptr->line == first)
+ {
+ /* Print as many bytes from the fixed part as is sensible */
+ byte_in_frag = 0;
+ while ((offsetT) byte_in_frag < frag_ptr->fr_fix
+ && data_buffer_size < MAX_BYTES - 3)
+ {
+ if (address == ~ (unsigned int) 0)
+ {
+ address = frag_ptr->fr_address;
+ }
+
+ sprintf (data_buffer + data_buffer_size,
+ "%02X",
+ (frag_ptr->fr_literal[byte_in_frag]) & 0xff);
+ data_buffer_size += 2;
+ byte_in_frag++;
+ }
+ {
+ unsigned int var_rep_max = byte_in_frag;
+ unsigned int var_rep_idx = byte_in_frag;
+
+ /* Print as many bytes from the variable part as is sensible */
+ while (((offsetT) byte_in_frag
+ < frag_ptr->fr_fix + frag_ptr->fr_var * frag_ptr->fr_offset)
+ && data_buffer_size < MAX_BYTES - 3)
+ {
+ if (address == ~ (unsigned int) 0)
+ {
+ address = frag_ptr->fr_address;
+ }
+ sprintf (data_buffer + data_buffer_size,
+ "%02X",
+ (frag_ptr->fr_literal[var_rep_idx]) & 0xff);
+#if 0
+ data_buffer[data_buffer_size++] = '*';
+ data_buffer[data_buffer_size++] = '*';
+#endif
+ data_buffer_size += 2;
+
+ var_rep_idx++;
+ byte_in_frag++;
+
+ if ((offsetT) var_rep_idx >= frag_ptr->fr_fix + frag_ptr->fr_var)
+ var_rep_idx = var_rep_max;
+ }
+ }
+
+ frag_ptr = frag_ptr->fr_next;
+ }
+ data_buffer[data_buffer_size] = '\0';
+ return address;
+}
+
+
+
+
+
+
+static void
+print_lines (list, lineno, string, address)
+ list_info_type *list;
+ unsigned int lineno;
+ char *string;
+ unsigned int address;
+{
+ unsigned int idx;
+ unsigned int nchars;
+ unsigned int lines;
+ unsigned int byte_in_word = 0;
+ char *src = data_buffer;
+
+ /* Print the stuff on the first line */
+ listing_page (list);
+ nchars = (LISTING_WORD_SIZE * 2 + 1) * listing_lhs_width;
+
+ /* Print the hex for the first line */
+ if (address == ~ (unsigned int) 0)
+ {
+ fprintf (list_file, "% 4d ", lineno);
+ for (idx = 0; idx < nchars; idx++)
+ fprintf (list_file, " ");
+
+ fprintf (list_file, "\t%s\n", string ? string : "");
+
+ on_page ++;
+
+ listing_page (0);
+
+ return;
+ }
+
+ if (had_errors ())
+ fprintf (list_file, "% 4d ???? ", lineno);
+ else
+ fprintf (list_file, "% 4d %04x ", lineno, address);
+
+ /* And the data to go along with it */
+ idx = 0;
+
+ while (*src && idx < nchars)
+ {
+ fprintf (list_file, "%c%c", src[0], src[1]);
+ src += 2;
+ byte_in_word++;
+
+ if (byte_in_word == LISTING_WORD_SIZE)
+ {
+ fprintf (list_file, " ");
+ idx++;
+ byte_in_word = 0;
+ }
+
+ idx += 2;
+ }
+
+ for (; idx < nchars; idx++)
+ fprintf (list_file, " ");
+
+ fprintf (list_file, "\t%s\n", string ? string : "");
+ on_page++;
+ listing_page (list);
+
+ if (list->message)
+ {
+ fprintf (list_file, "**** %s\n", list->message);
+ listing_page (list);
+ on_page++;
+ }
+
+ for (lines = 0;
+ lines < (unsigned int) listing_lhs_cont_lines
+ && *src;
+ lines ++)
+ {
+ nchars = ((LISTING_WORD_SIZE * 2) + 1)
+ * listing_lhs_width_second - 1;
+ idx = 0;
+
+ /* Print any more lines of data, but more compactly */
+ fprintf (list_file, "% 4d ", lineno);
+
+ while (*src && idx < nchars)
+ {
+ fprintf (list_file, "%c%c", src[0], src[1]);
+ src += 2;
+ idx += 2;
+ byte_in_word++;
+
+ if (byte_in_word == LISTING_WORD_SIZE)
+ {
+ fprintf (list_file, " ");
+ idx++;
+ byte_in_word = 0;
+ }
+ }
+
+ fprintf (list_file, "\n");
+ on_page ++;
+ listing_page (list);
+ }
+}
+
+
+static void
+list_symbol_table ()
+{
+ extern symbolS *symbol_rootP;
+ int got_some = 0;
+
+ symbolS *ptr;
+ eject = 1;
+ listing_page (0);
+
+ for (ptr = symbol_rootP; ptr != (symbolS *) NULL; ptr = symbol_next (ptr))
+ {
+ if (SEG_NORMAL (S_GET_SEGMENT (ptr))
+ || S_GET_SEGMENT (ptr) == absolute_section)
+ {
+#ifdef BFD_ASSEMBLER
+ /* Don't report section symbols. They are not interesting. */
+ if (ptr->bsym->flags & BSF_SECTION_SYM)
+ continue;
+#endif
+ if (S_GET_NAME (ptr))
+ {
+ char buf[30], fmt[8];
+ valueT val = S_GET_VALUE (ptr);
+
+ /* @@ Note that this is dependent on the compilation options,
+ not solely on the target characteristics. */
+ if (sizeof (val) == 4 && sizeof (int) == 4)
+ sprintf (buf, "%08lx", (unsigned long) val);
+ else if (sizeof (val) <= sizeof (unsigned long))
+ {
+ sprintf (fmt, "%%0%lulx",
+ (unsigned long) (sizeof (val) * 2));
+ sprintf (buf, fmt, (unsigned long) val);
+ }
+#if defined (BFD64)
+ else if (sizeof (val) > 4)
+ sprintf_vma (buf, val);
+#endif
+ else
+ abort ();
+
+ if (!got_some)
+ {
+ fprintf (list_file, "DEFINED SYMBOLS\n");
+ on_page++;
+ got_some = 1;
+ }
+
+ if (ptr->sy_frag && ptr->sy_frag->line)
+ {
+ fprintf (list_file, "%20s:%-5d %s:%s %s\n",
+ ptr->sy_frag->line->file->filename,
+ ptr->sy_frag->line->line,
+ segment_name (S_GET_SEGMENT (ptr)),
+ buf, S_GET_NAME (ptr));
+ }
+ else
+ {
+ fprintf (list_file, "%33s:%s %s\n",
+ segment_name (S_GET_SEGMENT (ptr)),
+ buf, S_GET_NAME (ptr));
+ }
+
+ on_page ++;
+ listing_page (0);
+ }
+ }
+
+ }
+ if (!got_some)
+ {
+ fprintf (list_file, "NO DEFINED SYMBOLS\n");
+ on_page++;
+ }
+ fprintf (list_file, "\n");
+ on_page++;
+ listing_page (0);
+
+ got_some = 0;
+
+ for (ptr = symbol_rootP; ptr != (symbolS *) NULL; ptr = symbol_next (ptr))
+ {
+ if (S_GET_NAME (ptr) && strlen (S_GET_NAME (ptr)) != 0)
+ {
+ if (S_GET_SEGMENT (ptr) == undefined_section)
+ {
+ if (!got_some)
+ {
+ got_some = 1;
+ fprintf (list_file, "UNDEFINED SYMBOLS\n");
+ on_page++;
+ listing_page (0);
+ }
+ fprintf (list_file, "%s\n", S_GET_NAME (ptr));
+ on_page++;
+ listing_page (0);
+ }
+ }
+ }
+ if (!got_some)
+ {
+ fprintf (list_file, "NO UNDEFINED SYMBOLS\n");
+ on_page++;
+ listing_page (0);
+ }
+}
+
+static void
+print_source (current_file, list, buffer, width)
+ file_info_type *current_file;
+ list_info_type *list;
+ char *buffer;
+ unsigned int width;
+{
+ if (!current_file->at_end)
+ {
+ while (current_file->linenum < list->hll_line
+ && !current_file->at_end)
+ {
+ char *p = buffer_line (current_file, buffer, width);
+ fprintf (list_file, "%4u:%-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 suspicious. */
+
+static int
+debugging_pseudo (list, line)
+ list_info_type *list;
+ const char *line;
+{
+ static int in_debug;
+ int was_debug;
+
+ if (list->debugging)
+ {
+ in_debug = 1;
+ return 1;
+ }
+
+ was_debug = in_debug;
+ in_debug = 0;
+
+ while (isspace ((unsigned char) *line))
+ line++;
+
+ if (*line != '.')
+ {
+#ifdef OBJ_ELF
+ /* The ELF compiler sometimes emits blank lines after switching
+ out of a debugging section. If the next line drops us back
+ into debugging information, then don't print the blank line.
+ This is a hack for a particular compiler behaviour, not a
+ general case. */
+ if (was_debug
+ && *line == '\0'
+ && list->next != NULL
+ && list->next->debugging)
+ {
+ in_debug = 1;
+ return 1;
+ }
+#endif
+
+ 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;
+
+ if (strncmp (line, "stabs", 5) == 0)
+ return 1;
+ if (strncmp (line, "stabn", 5) == 0)
+ return 1;
+
+ return 0;
+}
+
+static void
+listing_listing (name)
+ char *name;
+{
+ list_info_type *list = head;
+ file_info_type *current_hll_file = (file_info_type *) NULL;
+ char *message;
+ char *buffer;
+ char *p;
+ int show_listing = 1;
+ unsigned int width;
+
+ buffer = xmalloc (listing_rhs_width);
+ data_buffer = xmalloc (MAX_BYTES);
+ 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)
+ {
+ int list_line;
+
+ width = listing_rhs_width > paper_width ? paper_width :
+ listing_rhs_width;
+
+ list_line = list->line;
+ switch (list->edict)
+ {
+ case EDICT_LIST:
+ /* Skip all lines up to the current. */
+ list_line--;
+ break;
+ case EDICT_NOLIST:
+ show_listing--;
+ break;
+ case EDICT_NOLIST_NEXT:
+ 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)
+ {
+ while (list->file->linenum < list_line
+ && !list->file->at_end)
+ p = buffer_line (list->file, buffer, width);
+ }
+
+ if (list->edict == EDICT_LIST)
+ {
+ /* Enable listing for the single line that caused the enable. */
+ list_line++;
+ show_listing++;
+ }
+
+ 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);
+ }
+
+ if (list->line_contents)
+ {
+ if (!((listing & LISTING_NODEBUG)
+ && debugging_pseudo (list, list->line_contents)))
+ {
+ print_lines (list,
+ list->file->linenum == 0 ? list->line : list->file->linenum,
+ list->line_contents, calc_hex (list));
+ }
+ free (list->line_contents);
+ list->line_contents = NULL;
+ }
+ else
+ {
+ while (list->file->linenum < list_line
+ && !list->file->at_end)
+ {
+ unsigned int address;
+
+ p = buffer_line (list->file, buffer, width);
+
+ if (list->file->linenum < list_line)
+ address = ~ (unsigned int) 0;
+ else
+ address = calc_hex (list);
+
+ if (!((listing & LISTING_NODEBUG)
+ && debugging_pseudo (list, p)))
+ print_lines (list, list->file->linenum, p, address);
+ }
+ }
+
+ if (list->edict == EDICT_EJECT)
+ {
+ eject = 1;
+ }
+ }
+
+ if (list->edict == EDICT_NOLIST_NEXT)
+ --show_listing;
+
+ list = list->next;
+ }
+
+ free (buffer);
+ free (data_buffer);
+ data_buffer = NULL;
+}
+
+void
+listing_print (name)
+ char *name;
+{
+ int using_stdout;
+
+ title = "";
+ subtitle = "";
+
+ if (name == NULL)
+ {
+ list_file = stdout;
+ using_stdout = 1;
+ }
+ else
+ {
+ list_file = fopen (name, "w");
+ if (list_file != NULL)
+ using_stdout = 0;
+ else
+ {
+ as_perror (_("can't open list file: %s"), name);
+ list_file = stdout;
+ using_stdout = 1;
+ }
+ }
+
+ if (listing & LISTING_NOFORM)
+ {
+ paper_height = 0;
+ }
+
+ if (listing & LISTING_LISTING)
+ {
+ listing_listing (name);
+ }
+
+ if (listing & LISTING_SYMBOLS)
+ {
+ list_symbol_table ();
+ }
+
+ if (! using_stdout)
+ {
+ if (fclose (list_file) == EOF)
+ as_perror (_("error closing list file: %s"), name);
+ }
+
+ if (last_open_file)
+ {
+ fclose (last_open_file);
+ }
+}
+
+
+void
+listing_file (name)
+ const char *name;
+{
+ fn = name;
+}
+
+void
+listing_eject (ignore)
+ int ignore;
+{
+ if (listing)
+ listing_tail->edict = EDICT_EJECT;
+}
+
+void
+listing_flags (ignore)
+ int ignore;
+{
+ while ((*input_line_pointer++) && (*input_line_pointer != '\n'))
+ input_line_pointer++;
+
+}
+
+/* Turn listing on or off. An argument of 0 means to turn off
+ listing. An argument of 1 means to turn on listing. An argument
+ of 2 means to turn off listing, but as of the next line; that is,
+ the current line should be listed, but the next line should not. */
+
+void
+listing_list (on)
+ int on;
+{
+ if (listing)
+ {
+ switch (on)
+ {
+ case 0:
+ if (listing_tail->edict == EDICT_LIST)
+ listing_tail->edict = EDICT_NONE;
+ else
+ listing_tail->edict = EDICT_NOLIST;
+ break;
+ case 1:
+ if (listing_tail->edict == EDICT_NOLIST
+ || listing_tail->edict == EDICT_NOLIST_NEXT)
+ listing_tail->edict = EDICT_NONE;
+ else
+ listing_tail->edict = EDICT_LIST;
+ break;
+ case 2:
+ listing_tail->edict = EDICT_NOLIST_NEXT;
+ break;
+ default:
+ abort ();
+ }
+ }
+}
+
+
+void
+listing_psize (width_only)
+ int width_only;
+{
+ if (! width_only)
+ {
+ 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 != ',')
+ {
+ demand_empty_rest_of_line ();
+ return;
+ }
+
+ ++input_line_pointer;
+ }
+
+ paper_width = get_absolute_expression ();
+
+ demand_empty_rest_of_line ();
+}
+
+void
+listing_nopage (ignore)
+ int ignore;
+{
+ paper_height = 0;
+}
+
+void
+listing_title (depth)
+ int depth;
+{
+ int quoted;
+ char *start;
+ char *ttl;
+ unsigned int length;
+
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer != '\"')
+ quoted = 0;
+ else
+ {
+ quoted = 1;
+ ++input_line_pointer;
+ }
+
+ start = input_line_pointer;
+
+ while (*input_line_pointer)
+ {
+ if (quoted
+ ? *input_line_pointer == '\"'
+ : is_end_of_line[(unsigned char) *input_line_pointer])
+ {
+ if (listing)
+ {
+ length = input_line_pointer - start;
+ ttl = xmalloc (length + 1);
+ memcpy (ttl, start, length);
+ ttl[length] = 0;
+ listing_tail->edict = depth ? EDICT_SBTTL : EDICT_TITLE;
+ listing_tail->edict_arg = ttl;
+ }
+ if (quoted)
+ 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++;
+ }
+ }
+}
+
+
+
+void
+listing_source_line (line)
+ unsigned int line;
+{
+ if (listing)
+ {
+ new_frag ();
+ listing_tail->hll_line = line;
+ new_frag ();
+ }
+}
+
+void
+listing_source_file (file)
+ const char *file;
+{
+ if (listing)
+ listing_tail->hll_file = file_info (file);
+}
+
+
+
+#else
+
+
+/* Dummy functions for when compiled without listing enabled */
+
+void
+listing_flags (ignore)
+ int ignore;
+{
+ s_ignore (0);
+}
+
+void
+listing_list (on)
+ int on;
+{
+ s_ignore (0);
+}
+
+void
+listing_eject (ignore)
+ int ignore;
+{
+ s_ignore (0);
+}
+
+void
+listing_psize (ignore)
+ int ignore;
+{
+ s_ignore (0);
+}
+
+void
+listing_nopage (ignore)
+ int ignore;
+{
+ s_ignore (0);
+}
+
+void
+listing_title (depth)
+ int depth;
+{
+ s_ignore (0);
+}
+
+void
+listing_file (name)
+ const char *name;
+{
+
+}
+
+void
+listing_newline (name)
+ char *name;
+{
+
+}
+
+void
+listing_source_line (n)
+ unsigned int n;
+{
+
+}
+void
+listing_source_file (n)
+ const char *n;
+{
+
+}
+
+#endif