/* listing.c - maintain assembly listings Copyright (C) 1991-2021 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 3, or (at your option) any later version. GAS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. 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, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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 Throw 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 remembers 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 continuation LISTING_RHS_WIDTH Number of chars from the input file to print on a line. */ #include "as.h" #include "filenames.h" #include "safe-ctype.h" #include "input-file.h" #include "subsegs.h" #include "bfdver.h" #include <time.h> #include <stdarg.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 ((LISTING_WORD_SIZE) > 4 ? 1 : 4 / (LISTING_WORD_SIZE)) #endif #ifndef LISTING_LHS_WIDTH_SECOND #define LISTING_LHS_WIDTH_SECOND LISTING_LHS_WIDTH #endif #ifndef LISTING_RHS_WIDTH #define LISTING_RHS_WIDTH 100 #endif #ifndef LISTING_LHS_CONT_LINES #define LISTING_LHS_CONT_LINES 4 #endif #define MAX_DATELEN 30 /* 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; enum edict_enum { EDICT_NONE, EDICT_SBTTL, EDICT_TITLE, EDICT_NOLIST, EDICT_LIST, EDICT_NOLIST_NEXT, EDICT_EJECT }; struct list_message { char *message; struct list_message *next; }; /* This structure remembers 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; /* Pointers to linked list of messages associated with this line. */ struct list_message *messages, *last_message; enum edict_enum 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 (const char *, const char *); static file_info_type *file_info (const char *); static void new_frag (void); static void listing_page (list_info_type *); static unsigned int calc_hex (list_info_type *); static void print_lines (list_info_type *, unsigned int, const char *, unsigned int); static void list_symbol_table (void); static int debugging_pseudo (list_info_type *, const char *); static void listing_listing (char *); static void listing_message (const char *name, const char *message) { if (listing_tail != (list_info_type *) NULL) { char *n = concat (name, message, (char *) NULL); struct list_message *lm = XNEW (struct list_message); lm->message = n; lm->next = NULL; if (listing_tail->last_message) listing_tail->last_message->next = lm; else listing_tail->messages = lm; listing_tail->last_message = lm; } } void listing_warning (const char *message) { listing_message (_("Warning: "), message); } void listing_error (const char *message) { listing_message (_("Error: "), message); } static file_info_type * file_info (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 (filename_cmp (p->filename, file_name) == 0) return p; p = p->next; } /* Make new entry. */ p = XNEW (file_info_type); p->next = file_info_head; file_info_head = p; p->filename = xstrdup (file_name); p->pos = 0; p->linenum = 0; p->at_end = 0; return p; } static void new_frag (void) { frag_wane (frag_now); frag_new (0); } void listing_newline (char *ps) { const char *file; unsigned int line; static unsigned int last_line = 0xffff; static const char *last_file = NULL; list_info_type *new_i = 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 (startswith (segname, ".debug") || startswith (segname, ".line")) listing_tail->debugging = 1; } #endif /* PR 21977 - use the physical file name not the logical one unless high level source files are being included in the listing. */ if (listing & LISTING_HLL) file = as_where (&line); else file = as_where_physical (&line); if (ps == NULL) { if (line == last_line && !(last_file && file && filename_cmp (file, last_file))) return; new_i = XNEW (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, *src, *dest; int len; int seen_quote = 0; int seen_slash = 0; for (copy = input_line_pointer; *copy && (seen_quote || is_end_of_line [(unsigned char) *copy] != 1); copy++) { if (seen_slash) seen_slash = 0; else if (*copy == '\\') seen_slash = 1; else if (*copy == '"') seen_quote = !seen_quote; } len = copy - input_line_pointer + 1; copy = XNEWVEC (char, len); src = input_line_pointer; dest = copy; while (--len) { unsigned char c = *src++; /* Omit control characters in the listing. */ if (!ISCNTRL (c)) *dest++ = c; } *dest = 0; new_i->line_contents = copy; } else new_i->line_contents = NULL; } else { new_i = XNEW (list_info_type); new_i->line_contents = ps; } last_line = line; last_file = file; new_frag (); if (listing_tail) listing_tail->next = new_i; else head = new_i; listing_tail = new_i; new_i->frag = frag_now; new_i->line = line; new_i->file = file_info (file); new_i->next = (list_info_type *) NULL; new_i->messages = NULL; new_i->last_message = NULL; new_i->edict = EDICT_NONE; new_i->hll_file = (file_info_type *) NULL; new_i->hll_line = 0; new_i->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 (startswith (segname, ".debug") || startswith (segname, ".line")) new_i->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 (void) { 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 using the returned buffer simpler. */ static const char * buffer_line (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); } /* Open the file in the binary mode so that ftell above can return a reliable value that we can feed to fseek below. */ last_open_file_info = file; last_open_file = fopen (file->filename, FOPEN_RB); 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); while (c != EOF && c != '\n' && c != '\r') { if (++count < size) *p++ = c; c = fgetc (last_open_file); } /* If '\r' is followed by '\n', swallow that. Likewise, if '\n' is followed by '\r', swallow that as well. */ if (c == '\r' || c == '\n') { int next = fgetc (last_open_file); if ((c == '\r' && next != '\n') || (c == '\n' && next != '\r')) ungetc (next, last_open_file); } if (c == EOF) { file->at_end = 1; if (count + 3 < size) { *p++ = '.'; *p++ = '.'; *p++ = '.'; } } file->linenum++; *p++ = 0; return line; } /* This function rewinds the requested file back to the line requested, reads it in again into the buffer provided and then restores the file back to its original location. */ static void rebuffer_line (file_info_type * file, unsigned int linenum, char * buffer, unsigned int size) { unsigned int count = 0; unsigned int current_line; char * p = buffer; long pos; long pos2; int c; bool found = false; /* Sanity checks. */ if (file == NULL || buffer == NULL || size <= 1 || file->linenum <= linenum) return; /* Check the cache and see if we last used this file. */ if (last_open_file_info == NULL || file != last_open_file_info) { if (last_open_file) { last_open_file_info->pos = ftell (last_open_file); fclose (last_open_file); } /* Open the file in the binary mode so that ftell above can return a reliable value that we can feed to fseek below. */ last_open_file_info = file; last_open_file = fopen (file->filename, FOPEN_RB); 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); } /* Remember where we are in the current file. */ pos2 = pos = ftell (last_open_file); if (pos < 3) return; current_line = file->linenum; /* Leave room for the nul at the end of the buffer. */ size -= 1; buffer[size] = 0; /* Increment the current line count by one. This is to allow for the fact that we are searching for the start of a previous line, but we do this by detecting end-of-line character(s) not start-of-line characters. */ ++ current_line; while (pos2 > 0 && ! found) { char * ptr; /* Move backwards through the file, looking for earlier lines. */ pos2 = (long) size > pos2 ? 0 : pos2 - size; fseek (last_open_file, pos2, SEEK_SET); /* Our caller has kindly provided us with a buffer, so we use it. */ if (fread (buffer, 1, size, last_open_file) != size) { as_warn (_("unable to rebuffer file: %s\n"), file->filename); return; } for (ptr = buffer + size; ptr >= buffer; -- ptr) { if (*ptr == '\n') { -- current_line; if (current_line == linenum) { /* We have found the start of the line we seek. */ found = true; /* FIXME: We could skip the read-in-the-line code below if we know that we already have the whole line in the buffer. */ /* Advance pos2 to the newline character we have just located. */ pos2 += (ptr - buffer); /* Skip the newline and, if present, the carriage return. */ if (ptr + 1 == buffer + size) { ++pos2; if (fgetc (last_open_file) == '\r') ++ pos2; } else pos2 += (ptr[1] == '\r' ? 2 : 1); /* Move the file pointer to this location. */ fseek (last_open_file, pos2, SEEK_SET); break; } } } } /* Read in the line. */ c = fgetc (last_open_file); while (c != EOF && c != '\n' && c != '\r') { if (count < size) *p++ = c; count++; c = fgetc (last_open_file); } /* If '\r' is followed by '\n', swallow that. Likewise, if '\n' is followed by '\r', swallow that as well. */ if (c == '\r' || c == '\n') { int next = fgetc (last_open_file); if ((c == '\r' && next != '\n') || (c == '\n' && next != '\r')) ungetc (next, last_open_file); } /* Terminate the line. */ *p++ = 0; /* Reset the file position. */ fseek (last_open_file, pos, SEEK_SET); } static const char *fn; static unsigned int eject; /* Eject pending. */ static unsigned int page; /* Current page number. */ static const char *title; /* Current title. */ static const char *subtitle; /* Current subtitle. */ static unsigned int on_page; /* Number of lines printed on current page. */ static void listing_page (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; } } /* Print a line into the list_file. Update the line count and if necessary start a new page. */ static void emit_line (list_info_type * list, const char * format, ...) { va_list args; va_start (args, format); vfprintf (list_file, format, args); on_page++; listing_page (list); va_end (args); } static unsigned int calc_hex (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 octet_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. */ octet_in_frag = 0; while (octet_in_frag < frag_ptr->fr_fix && data_buffer_size < MAX_BYTES - 3) { if (address == ~(unsigned int) 0) address = frag_ptr->fr_address / OCTETS_PER_BYTE; sprintf (data_buffer + data_buffer_size, "%02X", (frag_ptr->fr_literal[octet_in_frag]) & 0xff); data_buffer_size += 2; octet_in_frag++; } if (frag_ptr->fr_type == rs_fill) { unsigned int var_rep_max = octet_in_frag; unsigned int var_rep_idx = octet_in_frag; /* Print as many bytes from the variable part as is sensible. */ while ((octet_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 / OCTETS_PER_BYTE; sprintf (data_buffer + data_buffer_size, "%02X", (frag_ptr->fr_literal[var_rep_idx]) & 0xff); data_buffer_size += 2; var_rep_idx++; octet_in_frag++; if (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_info_type *list, unsigned int lineno, const char *string, unsigned int address) { unsigned int idx; unsigned int nchars; unsigned int lines; unsigned int octet_in_word = 0; char *src = data_buffer; int cur; struct list_message *msg; /* 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, " "); emit_line (NULL, "\t%s\n", string ? string : ""); 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; cur = 0; while (src[cur] && idx < nchars) { int offset; offset = cur; fprintf (list_file, "%c%c", src[offset], src[offset + 1]); cur += 2; octet_in_word++; if (octet_in_word == LISTING_WORD_SIZE) { fprintf (list_file, " "); idx++; octet_in_word = 0; } idx += 2; } for (; idx < nchars; idx++) fprintf (list_file, " "); emit_line (list, "\t%s\n", string ? string : ""); for (msg = list->messages; msg; msg = msg->next) emit_line (list, "**** %s\n", msg->message); for (lines = 0; lines < (unsigned int) listing_lhs_cont_lines && src[cur]; 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[cur] && idx < nchars) { int offset; offset = cur; fprintf (list_file, "%c%c", src[offset], src[offset + 1]); cur += 2; idx += 2; octet_in_word++; if (octet_in_word == LISTING_WORD_SIZE) { fprintf (list_file, " "); idx++; octet_in_word = 0; } } emit_line (list, "\n"); } } static void list_symbol_table (void) { extern symbolS *symbol_rootP; int got_some = 0; symbolS *ptr; eject = 1; listing_page (NULL); for (ptr = symbol_rootP; ptr != (symbolS *) NULL; ptr = symbol_next (ptr)) { if (SEG_NORMAL (S_GET_SEGMENT (ptr)) || S_GET_SEGMENT (ptr) == absolute_section) { /* Don't report section symbols. They are not interesting. */ if (symbol_section_p (ptr)) continue; 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 (symbol_get_frag (ptr) && symbol_get_frag (ptr)->line) { fprintf (list_file, "%20s:%-5d %s:%s %s\n", symbol_get_frag (ptr)->line->file->filename, symbol_get_frag (ptr)->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 (NULL); } } } if (!got_some) { fprintf (list_file, "NO DEFINED SYMBOLS\n"); on_page++; } emit_line (NULL, "\n"); 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; emit_line (NULL, "UNDEFINED SYMBOLS\n"); } emit_line (NULL, "%s\n", S_GET_NAME (ptr)); } } } if (!got_some) emit_line (NULL, "NO UNDEFINED SYMBOLS\n"); } typedef struct cached_line { file_info_type * file; unsigned int line; char buffer [LISTING_RHS_WIDTH]; } cached_line; static void print_source (file_info_type * current_file, list_info_type * list, unsigned int width) { #define NUM_CACHE_LINES 3 static cached_line cached_lines[NUM_CACHE_LINES]; static int next_free_line = 0; cached_line * cache = NULL; if (current_file->linenum > list->hll_line && list->hll_line > 0) { /* This can happen with modern optimizing compilers. The source lines from the high level language input program are split up and interleaved, meaning the line number we want to display (list->hll_line) can have already been displayed. We have three choices: a. Do nothing, since we have already displayed the source line. This was the old behaviour. b. Display the particular line requested again, but only that line. This is the new behaviour. c. Display the particular line requested again and reset the current_file->line_num value so that we redisplay all the following lines as well the next time we encounter a larger line number. */ int i; /* Check the cache, maybe we already have the line saved. */ for (i = 0; i < NUM_CACHE_LINES; i++) if (cached_lines[i].file == current_file && cached_lines[i].line == list->hll_line) { cache = cached_lines + i; break; } if (i == NUM_CACHE_LINES) { cache = cached_lines + next_free_line; next_free_line ++; if (next_free_line == NUM_CACHE_LINES) next_free_line = 0; cache->file = current_file; cache->line = list->hll_line; cache->buffer[0] = 0; rebuffer_line (current_file, cache->line, cache->buffer, width); } emit_line (list, "%4u:%-13s **** %s\n", cache->line, cache->file->filename, cache->buffer); return; } if (!current_file->at_end) { int num_lines_shown = 0; while (current_file->linenum < list->hll_line && !current_file->at_end) { const char *p; cache = cached_lines + next_free_line; cache->file = current_file; cache->line = current_file->linenum + 1; cache->buffer[0] = 0; p = buffer_line (current_file, cache->buffer, width); /* Cache optimization: If printing a group of lines cache the first and last lines in the group. */ if (num_lines_shown == 0) { next_free_line ++; if (next_free_line == NUM_CACHE_LINES) next_free_line = 0; } emit_line (list, "%4u:%-13s **** %s\n", cache->line, cache->file->filename, p); num_lines_shown ++; } } } /* 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_info_type *list, const char *line) { #ifdef OBJ_ELF static int in_debug; int was_debug; #endif if (list->debugging) { #ifdef OBJ_ELF in_debug = 1; #endif return 1; } #ifdef OBJ_ELF was_debug = in_debug; in_debug = 0; #endif while (ISSPACE (*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 (startswith (line, "def")) return 1; if (startswith (line, "val")) return 1; if (startswith (line, "scl")) return 1; if (startswith (line, "line")) return 1; if (startswith (line, "endef")) return 1; if (startswith (line, "ln")) return 1; if (startswith (line, "type")) return 1; if (startswith (line, "size")) return 1; if (startswith (line, "dim")) return 1; if (startswith (line, "tag")) return 1; if (startswith (line, "stabs")) return 1; if (startswith (line, "stabn")) return 1; return 0; } static void listing_listing (char *name ATTRIBUTE_UNUSED) { list_info_type *list = head; file_info_type *current_hll_file = (file_info_type *) NULL; char *buffer; const char *p; int show_listing = 1; unsigned int width; buffer = XNEWVEC (char, listing_rhs_width); data_buffer = XNEWVEC (char, MAX_BYTES); eject = 1; list = head->next; while (list) { unsigned 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: if (show_listing == 0) list_line--; 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 || (list->edict == EDICT_NOLIST_NEXT && show_listing == 0)) { /* 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). */ 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, 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 == 1) --show_listing; list = list->next; } free (buffer); free (data_buffer); data_buffer = NULL; } /* Print time stamp in ISO format: yyyy-mm-ddThh:mm:ss.ss+/-zzzz. */ static void print_timestamp (void) { const time_t now = time (NULL); struct tm * timestamp; char stampstr[MAX_DATELEN]; /* Any portable way to obtain subsecond values??? */ timestamp = localtime (&now); strftime (stampstr, MAX_DATELEN, "%Y-%m-%dT%H:%M:%S.000%z", timestamp); fprintf (list_file, _("\n time stamp \t: %s\n\n"), stampstr); } static void print_single_option (char * opt, int *pos) { int opt_len = strlen (opt); if ((*pos + opt_len) < paper_width) { fprintf (list_file, _("%s "), opt); *pos = *pos + opt_len; } else { fprintf (list_file, _("\n\t%s "), opt); *pos = opt_len; } } /* Print options passed to as. */ static void print_options (char ** argv) { const char *field_name = _("\n options passed\t: "); int pos = strlen (field_name); char **p; fputs (field_name, list_file); for (p = &argv[1]; *p != NULL; p++) if (**p == '-') { /* Ignore these. */ if (strcmp (*p, "-o") == 0) { if (p[1] != NULL) p++; continue; } if (strcmp (*p, "-v") == 0) continue; print_single_option (*p, &pos); } } /* Print a first section with basic info like file names, as version, options passed, target, and timestamp. The format of this section is as follows: AS VERSION fieldname TAB ':' fieldcontents { TAB fieldcontents-cont } */ static void listing_general_info (char ** argv) { /* Print the stuff on the first line. */ eject = 1; listing_page (NULL); fprintf (list_file, _(" GNU assembler version %s (%s)\n\t using BFD version %s."), VERSION, TARGET_ALIAS, BFD_VERSION_STRING); print_options (argv); fprintf (list_file, _("\n input file \t: %s"), fn); fprintf (list_file, _("\n output file \t: %s"), out_file_name); fprintf (list_file, _("\n target \t: %s"), TARGET_CANONICAL); print_timestamp (); } void listing_print (char *name, char **argv) { int using_stdout; title = ""; subtitle = ""; if (name == NULL) { list_file = stdout; using_stdout = 1; } else { list_file = fopen (name, FOPEN_WT); if (list_file != NULL) using_stdout = 0; else { as_warn (_("can't open %s: %s"), name, xstrerror (errno)); list_file = stdout; using_stdout = 1; } } if (listing & LISTING_NOFORM) paper_height = 0; if (listing & LISTING_GENERAL) listing_general_info (argv); if (listing & LISTING_LISTING) listing_listing (name); if (listing & LISTING_SYMBOLS) list_symbol_table (); if (! using_stdout) { if (fclose (list_file) == EOF) as_warn (_("can't close %s: %s"), name, xstrerror (errno)); } if (last_open_file) fclose (last_open_file); } void listing_file (const char *name) { fn = name; } void listing_eject (int ignore ATTRIBUTE_UNUSED) { if (listing) listing_tail->edict = EDICT_EJECT; } /* 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 (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 (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; } { expressionS exp; (void) expression_and_evaluate (& exp); if (exp.X_op == O_constant) { offsetT new_width = exp.X_add_number; if (new_width > 7) paper_width = new_width; else as_bad (_("new paper width is too small")); } else if (exp.X_op != O_absent) as_bad (_("bad or irreducible expression for paper width")); else as_bad (_("missing expression for paper width")); } demand_empty_rest_of_line (); } void listing_nopage (int ignore ATTRIBUTE_UNUSED) { paper_height = 0; } void listing_title (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 = xmemdup0 (start, length); 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 (unsigned int line) { if (listing) { new_frag (); listing_tail->hll_line = line; new_frag (); } } void listing_source_file (const char *file) { if (listing) listing_tail->hll_file = file_info (file); } #else /* Dummy functions for when compiled without listing enabled. */ void listing_list (int on) { s_ignore (0); } void listing_eject (int ignore) { s_ignore (0); } void listing_psize (int ignore) { s_ignore (0); } void listing_nopage (int ignore) { s_ignore (0); } void listing_title (int depth) { s_ignore (0); } void listing_file (const char *name) { } void listing_newline (char *name) { } void listing_source_line (unsigned int n) { } void listing_source_file (const char *n) { } #endif