diff options
Diffstat (limited to 'gdb/coffread.c')
| -rw-r--r-- | gdb/coffread.c | 485 |
1 files changed, 271 insertions, 214 deletions
diff --git a/gdb/coffread.c b/gdb/coffread.c index 3d4dd60..3494eb1 100644 --- a/gdb/coffread.c +++ b/gdb/coffread.c @@ -51,19 +51,20 @@ extern void _initialize_coffread (void); struct coff_symfile_info { - file_ptr min_lineno_offset; /* Where in file lowest line#s are */ - file_ptr max_lineno_offset; /* 1+last byte of line#s in file */ + file_ptr min_lineno_offset; /* Where in file lowest line#s are. */ + file_ptr max_lineno_offset; /* 1+last byte of line#s in file. */ - CORE_ADDR textaddr; /* Addr of .text section. */ - unsigned int textsize; /* Size of .text section. */ + CORE_ADDR textaddr; /* Addr of .text section. */ + unsigned int textsize; /* Size of .text section. */ struct stab_section_list *stabsects; /* .stab sections. */ - asection *stabstrsect; /* Section pointer for .stab section */ + asection *stabstrsect; /* Section pointer for .stab section. */ char *stabstrdata; }; /* Translate an external name string into a user-visible name. */ #define EXTERNAL_NAME(string, abfd) \ - (string[0] == bfd_get_symbol_leading_char(abfd)? string+1: string) + (string[0] == bfd_get_symbol_leading_char (abfd) \ + ? string + 1 : string) /* To be an sdb debug type, type must have at least a basic or primary derived type. Using this rather than checking against T_NULL is @@ -85,7 +86,8 @@ static bfd *nlist_bfd_global; static int nlist_nsyms_global; -/* Pointers to scratch storage, used for reading raw symbols and auxents. */ +/* Pointers to scratch storage, used for reading raw symbols and + auxents. */ static char *temp_sym; static char *temp_aux; @@ -106,10 +108,10 @@ static unsigned local_n_tshift; #define N_TMASK local_n_tmask #define N_TSHIFT local_n_tshift -/* Local variables that hold the sizes in the file of various COFF structures. - (We only need to know this to read them from the file -- BFD will then - translate the data in them, into `internal_xxx' structs in the right - byte order, alignment, etc.) */ +/* Local variables that hold the sizes in the file of various COFF + structures. (We only need to know this to read them from the file + -- BFD will then translate the data in them, into `internal_xxx' + structs in the right byte order, alignment, etc.) */ static unsigned local_linesz; static unsigned local_symesz; @@ -124,13 +126,14 @@ static int pe_file; static struct symbol *opaque_type_chain[HASHSIZE]; -/* Simplified internal version of coff symbol table information */ +/* Simplified internal version of coff symbol table information. */ struct coff_symbol { char *c_name; - int c_symnum; /* symbol number of this entry */ - int c_naux; /* 0 if syment only, 1 if syment + auxent, etc */ + int c_symnum; /* Symbol number of this entry. */ + int c_naux; /* 0 if syment only, 1 if syment + + auxent, etc. */ CORE_ADDR c_value; int c_sclass; int c_secnum; @@ -143,7 +146,8 @@ static struct type *coff_read_struct_type (int, int, int, struct objfile *); static struct type *decode_base_type (struct coff_symbol *, - unsigned int, union internal_auxent *, + unsigned int, + union internal_auxent *, struct objfile *); static struct type *decode_type (struct coff_symbol *, unsigned int, @@ -183,7 +187,8 @@ static void free_stringtab_cleanup (void *ignore); static int init_stringtab (bfd *, long); static void read_one_sym (struct coff_symbol *, - struct internal_syment *, union internal_auxent *); + struct internal_syment *, + union internal_auxent *); static void coff_symtab_read (long, unsigned int, struct objfile *); @@ -364,10 +369,9 @@ static void coff_start_symtab (char *name) { start_symtab ( - /* We fill in the filename later. start_symtab puts - this pointer into last_source_file and we put it in - subfiles->name, which end_symtab frees; that's why - it must be malloc'd. */ + /* We fill in the filename later. start_symtab puts this pointer + into last_source_file and we put it in subfiles->name, which + end_symtab frees; that's why it must be malloc'd. */ xstrdup (name), /* We never know the directory name for COFF. */ NULL, @@ -379,8 +383,9 @@ coff_start_symtab (char *name) /* Save the vital information from when starting to read a file, for use when closing off the current file. - NAME is the file name the symbols came from, START_ADDR is the first - text address for the file, and SIZE is the number of bytes of text. */ + NAME is the file name the symbols came from, START_ADDR is the + first text address for the file, and SIZE is the number of bytes of + text. */ static void complete_symtab (char *name, CORE_ADDR start_addr, unsigned int size) @@ -392,10 +397,10 @@ complete_symtab (char *name, CORE_ADDR start_addr, unsigned int size) current_source_end_addr = start_addr + size; } -/* Finish the symbol definitions for one main source file, - close off all the lexical contexts for that file - (creating struct block's for them), then make the - struct symtab for that file and put it in the list of all such. */ +/* Finish the symbol definitions for one main source file, close off + all the lexical contexts for that file (creating struct block's for + them), then make the struct symtab for that file and put it in the + list of all such. */ static void coff_end_symtab (struct objfile *objfile) @@ -404,9 +409,10 @@ coff_end_symtab (struct objfile *objfile) last_source_start_addr = current_source_start_addr; - symtab = end_symtab (current_source_end_addr, objfile, SECT_OFF_TEXT (objfile)); + symtab = end_symtab (current_source_end_addr, objfile, + SECT_OFF_TEXT (objfile)); - /* Reinitialize for beginning of new file. */ + /* Reinitialize for beginning of new file. */ last_source_file = NULL; } @@ -417,13 +423,14 @@ record_minimal_symbol (struct coff_symbol *cs, CORE_ADDR address, { struct bfd_section *bfd_section; - /* We don't want TDESC entry points in the minimal symbol table */ + /* We don't want TDESC entry points in the minimal symbol table. */ if (cs->c_name[0] == '@') return NULL; bfd_section = cs_to_bfd_section (cs, objfile); - return prim_record_minimal_symbol_and_info (cs->c_name, address, type, - section, bfd_section, objfile); + return prim_record_minimal_symbol_and_info (cs->c_name, address, + type, section, + bfd_section, objfile); } /* coff_symfile_init () @@ -433,26 +440,29 @@ record_minimal_symbol (struct coff_symbol *cs, CORE_ADDR address, a pointer to "private data" which we fill with cookies and other treats for coff_symfile_read (). - We will only be called if this is a COFF or COFF-like file. - BFD handles figuring out the format of the file, and code in symtab.c + We will only be called if this is a COFF or COFF-like file. BFD + handles figuring out the format of the file, and code in symtab.c uses BFD's determination to vector to us. - The ultimate result is a new symtab (or, FIXME, eventually a psymtab). */ + The ultimate result is a new symtab (or, FIXME, eventually a + psymtab). */ static void coff_symfile_init (struct objfile *objfile) { - /* Allocate struct to keep track of stab reading. */ + /* Allocate struct to keep track of stab reading. */ objfile->deprecated_sym_stab_info = (struct dbx_symfile_info *) xmalloc (sizeof (struct dbx_symfile_info)); memset (objfile->deprecated_sym_stab_info, 0, sizeof (struct dbx_symfile_info)); - /* Allocate struct to keep track of the symfile */ - objfile->deprecated_sym_private = xmalloc (sizeof (struct coff_symfile_info)); + /* Allocate struct to keep track of the symfile. */ + objfile->deprecated_sym_private + = xmalloc (sizeof (struct coff_symfile_info)); - memset (objfile->deprecated_sym_private, 0, sizeof (struct coff_symfile_info)); + memset (objfile->deprecated_sym_private, 0, + sizeof (struct coff_symfile_info)); /* COFF objects may be reordered, so set OBJF_REORDERED. If we find this causes a significant slowdown in gdb then we could @@ -462,9 +472,9 @@ coff_symfile_init (struct objfile *objfile) init_entry_point_info (objfile); } -/* This function is called for every section; it finds the outer limits - of the line table (minimum and maximum file offset) so that the - mainline code can read the whole thing for efficiency. */ +/* This function is called for every section; it finds the outer + limits of the line table (minimum and maximum file offset) so that + the mainline code can read the whole thing for efficiency. */ static void find_linenos (bfd *abfd, struct bfd_section *asect, void *vpinfo) @@ -473,18 +483,18 @@ find_linenos (bfd *abfd, struct bfd_section *asect, void *vpinfo) int size, count; file_ptr offset, maxoff; -/* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ + /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ count = asect->lineno_count; -/* End of warning */ + /* End of warning. */ if (count == 0) return; size = count * local_linesz; info = (struct coff_symfile_info *) vpinfo; -/* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ + /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ offset = asect->line_filepos; -/* End of warning */ + /* End of warning. */ if (offset < info->min_lineno_offset || info->min_lineno_offset == 0) info->min_lineno_offset = offset; @@ -519,7 +529,7 @@ coff_symfile_read (struct objfile *objfile, int symfile_flags) info = (struct coff_symfile_info *) objfile->deprecated_sym_private; dbxinfo = objfile->deprecated_sym_stab_info; - symfile_bfd = abfd; /* Kludge for swap routines */ + symfile_bfd = abfd; /* Kludge for swap routines. */ /* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */ num_symbols = bfd_get_symcount (abfd); /* How many syms */ @@ -553,7 +563,7 @@ coff_symfile_read (struct objfile *objfile, int symfile_flags) strncmp (bfd_get_target (objfile->obfd), "pe", 2) == 0 || strncmp (bfd_get_target (objfile->obfd), "epoc-pe", 7) == 0; -/* End of warning */ + /* End of warning. */ info->min_lineno_offset = 0; info->max_lineno_offset = 0; @@ -599,8 +609,8 @@ coff_symfile_read (struct objfile *objfile, int symfile_flags) coff_symtab_read ((long) symtab_offset, num_symbols, objfile); - /* Install any minimal symbols that have been collected as the current - minimal symbols for this objfile. */ + /* Install any minimal symbols that have been collected as the + current minimal symbols for this objfile. */ install_minimal_symbols (objfile); @@ -661,10 +671,11 @@ coff_new_init (struct objfile *ignore) { } -/* Perform any local cleanups required when we are done with a particular - objfile. I.E, we are in the process of discarding all symbol information - for an objfile, freeing up all memory held for it, and unlinking the - objfile struct from the global list of known objfiles. */ +/* Perform any local cleanups required when we are done with a + particular objfile. I.E, we are in the process of discarding all + symbol information for an objfile, freeing up all memory held for + it, and unlinking the objfile struct from the global list of known + objfiles. */ static void coff_symfile_finish (struct objfile *objfile) @@ -674,7 +685,7 @@ coff_symfile_finish (struct objfile *objfile) xfree (objfile->deprecated_sym_private); } - /* Let stabs reader clean up */ + /* Let stabs reader clean up. */ stabsread_clear_cache (); dwarf2_free_objfile (objfile); @@ -716,8 +727,8 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, struct minimal_symbol *msym; /* Work around a stdio bug in SunOS4.1.1 (this makes me nervous.... - it's hard to know I've really worked around it. The fix should be - harmless, anyway). The symptom of the bug is that the first + it's hard to know I've really worked around it. The fix should + be harmless, anyway). The symptom of the bug is that the first fread (in read_one_sym), will (in my example) actually get data from file offset 268, when the fseek was to 264 (and ftell shows 264). This causes all hell to break loose. I was unable to @@ -731,7 +742,7 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, bfd_seek (objfile->obfd, 0, 0); - /* Position to read the symbol table. */ + /* Position to read the symbol table. */ val = bfd_seek (objfile->obfd, (long) symtab_offset, 0); if (val < 0) perror_with_name (objfile->name); @@ -742,7 +753,7 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, last_source_file = NULL; memset (opaque_type_chain, 0, sizeof opaque_type_chain); - if (type_vector) /* Get rid of previous one */ + if (type_vector) /* Get rid of previous one. */ xfree (type_vector); type_vector_length = 160; type_vector = (struct type **) @@ -770,10 +781,12 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, allow printing values in this symtab. */ current_subfile->language = language_minimal; complete_symtab ("_globals_", 0, 0); - /* done with all files, everything from here on out is globals */ + /* Done with all files, everything from here on out is + globals. */ } - /* Special case for file with type declarations only, no text. */ + /* Special case for file with type declarations only, no + text. */ if (!last_source_file && SDB_TYPE (cs->c_type) && cs->c_secnum == N_DEBUG) complete_symtab (filestring, 0, 0); @@ -781,11 +794,14 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, /* Typedefs should not be treated as symbol definitions. */ if (ISFCN (cs->c_type) && cs->c_sclass != C_TPDEF) { - /* Record all functions -- external and static -- in minsyms. */ + /* Record all functions -- external and static -- in + minsyms. */ int section = cs_to_section (cs, objfile); - tmpaddr = cs->c_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); - record_minimal_symbol (cs, tmpaddr, mst_text, section, objfile); + tmpaddr = cs->c_value + ANOFFSET (objfile->section_offsets, + SECT_OFF_TEXT (objfile)); + record_minimal_symbol (cs, tmpaddr, mst_text, + section, objfile); fcn_line_ptr = main_aux.x_sym.x_fcnary.x_fcn.x_lnnoptr; fcn_start_addr = tmpaddr; @@ -804,13 +820,14 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, case C_LINE: case C_ALIAS: case C_HIDDEN: - complaint (&symfile_complaints, _("Bad n_sclass for symbol %s"), + complaint (&symfile_complaints, + _("Bad n_sclass for symbol %s"), cs->c_name); break; case C_FILE: - /* c_value field contains symnum of next .file entry in table - or symnum of first global after last .file. */ + /* c_value field contains symnum of next .file entry in + table or symnum of first global after last .file. */ next_file_symnum = cs->c_value; if (cs->c_naux > 0) filestring = coff_getfilename (&main_aux); @@ -827,12 +844,12 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, in_source_file = 1; break; - /* C_LABEL is used for labels and static functions. Including - it here allows gdb to see static functions when no debug - info is available. */ + /* C_LABEL is used for labels and static functions. + Including it here allows gdb to see static functions when + no debug info is available. */ case C_LABEL: - /* However, labels within a function can make weird backtraces, - so filter them out (from phdm@macqel.be). */ + /* However, labels within a function can make weird + backtraces, so filter them out (from phdm@macqel.be). */ if (within_function) break; case C_STAT: @@ -843,18 +860,19 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, { if (strcmp (cs->c_name, ".text") == 0) { - /* FIXME: don't wire in ".text" as section name - or symbol name! */ - /* Check for in_source_file deals with case of - a file with debugging symbols - followed by a later file with no symbols. */ + /* FIXME: don't wire in ".text" as section name or + symbol name! */ + /* Check for in_source_file deals with case of a + file with debugging symbols followed by a later + file with no symbols. */ if (in_source_file) complete_symtab (filestring, - cs->c_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)), + cs->c_value + ANOFFSET (objfile->section_offsets, + SECT_OFF_TEXT (objfile)), main_aux.x_scn.x_scnlen); in_source_file = 0; } - /* flush rest of '.' symbols */ + /* Flush rest of '.' symbols. */ break; } else if (!SDB_TYPE (cs->c_type) @@ -870,7 +888,7 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, /* At least on a 3b1, gcc generates swbeg and string labels that look like this. Ignore them. */ break; - /* fall in for static symbols that don't start with '.' */ + /* Fall in for static symbols that don't start with '.' */ case C_THUMBEXT: case C_THUMBEXTFUNC: case C_EXT: @@ -906,7 +924,7 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, else if (cs->c_secnum == N_ABS) { /* Use the correct minimal symbol type (and don't - relocate) for absolute values. */ + relocate) for absolute values. */ ms_type = mst_abs; sec = cs_to_section (cs, objfile); tmpaddr = cs->c_value; @@ -917,7 +935,7 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, sec = cs_to_section (cs, objfile); tmpaddr = cs->c_value; - /* Statics in a PE file also get relocated */ + /* Statics in a PE file also get relocated. */ if (cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXTFUNC || cs->c_sclass == C_THUMBEXT @@ -936,22 +954,24 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, && bfd_section->flags & SEC_LOAD) { ms_type = - cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT ? - mst_data : mst_file_data; + cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT + ? mst_data : mst_file_data; } else if (bfd_section->flags & SEC_ALLOC) { ms_type = - cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT ? - mst_bss : mst_file_bss; + cs->c_sclass == C_EXT || cs->c_sclass == C_THUMBEXT + ? mst_bss : mst_file_bss; } else ms_type = mst_unknown; } - msym = record_minimal_symbol (cs, tmpaddr, ms_type, sec, objfile); + msym = record_minimal_symbol (cs, tmpaddr, ms_type, + sec, objfile); if (msym) - gdbarch_coff_make_msymbol_special (gdbarch, cs->c_sclass, msym); + gdbarch_coff_make_msymbol_special (gdbarch, + cs->c_sclass, msym); if (SDB_TYPE (cs->c_type)) { @@ -970,12 +990,14 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, { within_function = 1; - /* value contains address of first non-init type code */ + /* Value contains address of first non-init type + code. */ /* main_aux.x_sym.x_misc.x_lnsz.x_lnno - contains line number of '{' } */ + contains line number of '{' }. */ if (cs->c_naux != 1) complaint (&symfile_complaints, - _("`.bf' symbol %d has no aux entry"), cs->c_symnum); + _("`.bf' symbol %d has no aux entry"), + cs->c_symnum); fcn_first_line = main_aux.x_sym.x_misc.x_lnsz.x_lnno; fcn_first_line_addr = cs->c_value; @@ -986,19 +1008,20 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, new = push_context (depth, fcn_start_addr); fcn_cs_saved.c_name = getsymname (&fcn_sym_saved); new->name = - process_coff_symbol (&fcn_cs_saved, &fcn_aux_saved, objfile); + process_coff_symbol (&fcn_cs_saved, + &fcn_aux_saved, objfile); } else if (strcmp (cs->c_name, ".ef") == 0) { if (!within_function) error (_("Bad coff function information.")); - /* the value of .ef is the address of epilogue code; + /* The value of .ef is the address of epilogue code; not useful for gdb. */ /* { main_aux.x_sym.x_misc.x_lnsz.x_lnno contains number of lines to '}' */ if (context_stack_depth <= 0) - { /* We attempted to pop an empty context stack */ + { /* We attempted to pop an empty context stack. */ complaint (&symfile_complaints, _("`.ef' symbol without matching `.bf' symbol ignored starting at symnum %d"), cs->c_symnum); @@ -1019,7 +1042,8 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, if (cs->c_naux != 1) { complaint (&symfile_complaints, - _("`.ef' symbol %d has no aux entry"), cs->c_symnum); + _("`.ef' symbol %d has no aux entry"), + cs->c_symnum); fcn_last_line = 0x7FFFFFFF; } else @@ -1028,23 +1052,25 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, } /* fcn_first_line is the line number of the opening '{'. Do not record it - because it would affect gdb's idea - of the line number of the first statement of the function - - except for one-line functions, for which it is also the line - number of all the statements and of the closing '}', and - for which we do not have any other statement-line-number. */ + of the line number of the first statement of the + function - except for one-line functions, for which + it is also the line number of all the statements and + of the closing '}', and for which we do not have any + other statement-line-number. */ if (fcn_last_line == 1) record_line (current_subfile, fcn_first_line, gdbarch_addr_bits_remove (gdbarch, fcn_first_line_addr)); else - enter_linenos (fcn_line_ptr, fcn_first_line, fcn_last_line, - objfile); + enter_linenos (fcn_line_ptr, fcn_first_line, + fcn_last_line, objfile); - finish_block (new->name, &local_symbols, new->old_blocks, - new->start_addr, + finish_block (new->name, &local_symbols, + new->old_blocks, new->start_addr, fcn_cs_saved.c_value + fcn_aux_saved.x_sym.x_misc.x_fsize - + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)), + + ANOFFSET (objfile->section_offsets, + SECT_OFF_TEXT (objfile)), objfile ); within_function = 0; @@ -1055,13 +1081,14 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, if (strcmp (cs->c_name, ".bb") == 0) { tmpaddr = cs->c_value; - tmpaddr += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); + tmpaddr += ANOFFSET (objfile->section_offsets, + SECT_OFF_TEXT (objfile)); push_context (++depth, tmpaddr); } else if (strcmp (cs->c_name, ".eb") == 0) { if (context_stack_depth <= 0) - { /* We attempted to pop an empty context stack */ + { /* We attempted to pop an empty context stack. */ complaint (&symfile_complaints, _("`.eb' symbol without matching `.bb' symbol ignored starting at symnum %d"), cs->c_symnum); @@ -1071,7 +1098,7 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, new = pop_context (); if (depth-- != new->depth) { - complaint (&symfile_complaints, + complaint (&symfile_complaints, _("Mismatched .eb symbol ignored starting at symnum %d"), symnum); break; @@ -1079,7 +1106,8 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, if (local_symbols && context_stack_depth > 0) { tmpaddr = - cs->c_value + ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); + cs->c_value + ANOFFSET (objfile->section_offsets, + SECT_OFF_TEXT (objfile)); /* Make a block for the local symbols within. */ finish_block (0, &local_symbols, new->old_blocks, new->start_addr, tmpaddr, objfile); @@ -1098,7 +1126,7 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, if ((nsyms == 0) && (pe_file)) { /* We've got no debugging symbols, but it's a portable - executable, so try to read the export table */ + executable, so try to read the export table. */ read_pe_exported_syms (objfile); } @@ -1115,9 +1143,10 @@ coff_symtab_read (long symtab_offset, unsigned int nsyms, /* Routines for reading headers and symbols from executable. */ -/* Read the next symbol, swap it, and return it in both internal_syment - form, and coff_symbol form. Also return its first auxent, if any, - in internal_auxent form, and skip any other auxents. */ +/* Read the next symbol, swap it, and return it in both + internal_syment form, and coff_symbol form. Also return its first + auxent, if any, in internal_auxent form, and skip any other + auxents. */ static void read_one_sym (struct coff_symbol *cs, @@ -1138,10 +1167,11 @@ read_one_sym (struct coff_symbol *cs, bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); if (bytes != local_auxesz) error ("%s: error reading symbols", current_objfile->name); - bfd_coff_swap_aux_in (symfile_bfd, temp_aux, sym->n_type, sym->n_sclass, + bfd_coff_swap_aux_in (symfile_bfd, temp_aux, + sym->n_type, sym->n_sclass, 0, cs->c_naux, (char *) aux); /* If more than one aux entry, read past it (only the first aux - is important). */ + is important). */ for (i = 1; i < cs->c_naux; i++) { bytes = bfd_bread (temp_aux, local_auxesz, nlist_bfd_global); @@ -1193,7 +1223,7 @@ read_one_sym (struct coff_symbol *cs, } } -/* Support for string table handling */ +/* Support for string table handling. */ static char *stringtab = NULL; @@ -1207,7 +1237,7 @@ init_stringtab (bfd *abfd, long offset) free_stringtab (); /* If the file is stripped, the offset might be zero, indicating no - string table. Just return with `stringtab' set to null. */ + string table. Just return with `stringtab' set to null. */ if (offset == 0) return 0; @@ -1218,19 +1248,19 @@ init_stringtab (bfd *abfd, long offset) length = bfd_h_get_32 (symfile_bfd, lengthbuf); /* If no string table is needed, then the file may end immediately - after the symbols. Just return with `stringtab' set to null. */ + after the symbols. Just return with `stringtab' set to null. */ if (val != sizeof lengthbuf || length < sizeof lengthbuf) return 0; stringtab = (char *) xmalloc (length); - /* This is in target format (probably not very useful, and not currently - used), not host format. */ + /* This is in target format (probably not very useful, and not + currently used), not host format. */ memcpy (stringtab, lengthbuf, sizeof lengthbuf); - if (length == sizeof length) /* Empty table -- just the count */ + if (length == sizeof length) /* Empty table -- just the count. */ return 0; - val = bfd_bread (stringtab + sizeof lengthbuf, length - sizeof lengthbuf, - abfd); + val = bfd_bread (stringtab + sizeof lengthbuf, + length - sizeof lengthbuf, abfd); if (val != length - sizeof lengthbuf || stringtab[length - 1] != '\0') return -1; @@ -1272,9 +1302,9 @@ getsymname (struct internal_syment *symbol_entry) return result; } -/* Extract the file name from the aux entry of a C_FILE symbol. Return - only the last component of the name. Result is in static storage and - is only good for temporary use. */ +/* Extract the file name from the aux entry of a C_FILE symbol. + Return only the last component of the name. Result is in static + storage and is only good for temporary use. */ static char * coff_getfilename (union internal_auxent *aux_entry) @@ -1326,14 +1356,14 @@ init_lineno (bfd *abfd, long offset, int size) if (bfd_seek (abfd, offset, 0) < 0) return -1; - /* Allocate the desired table, plus a sentinel */ + /* Allocate the desired table, plus a sentinel. */ linetab = (char *) xmalloc (size + local_linesz); val = bfd_bread (linetab, size, abfd); if (val != size) return -1; - /* Terminate it with an all-zero sentinel record */ + /* Terminate it with an all-zero sentinel record. */ memset (linetab + size, 0, local_linesz); return 0; @@ -1372,16 +1402,17 @@ enter_linenos (long file_offset, int first_line, complaint (&symfile_complaints, _("Line number pointer %ld lower than start of line numbers"), file_offset); - if (file_offset > linetab_size) /* Too big to be an offset? */ + if (file_offset > linetab_size) /* Too big to be an offset? */ return; - file_offset += linetab_offset; /* Try reading at that linetab offset */ + file_offset += linetab_offset; /* Try reading at that linetab + offset. */ } rawptr = &linetab[file_offset - linetab_offset]; - /* skip first line entry for each function */ + /* Skip first line entry for each function. */ rawptr += local_linesz; - /* line numbers start at one for the first line of the function */ + /* Line numbers start at one for the first line of the function. */ first_line--; /* If the line number table is full (e.g. 64K lines in COFF debug @@ -1392,12 +1423,14 @@ enter_linenos (long file_offset, int first_line, bfd_coff_swap_lineno_in (symfile_bfd, rawptr, &lptr); rawptr += local_linesz; /* The next function, or the sentinel, will have L_LNNO32 zero; - we exit. */ + we exit. */ if (L_LNNO32 (&lptr) && L_LNNO32 (&lptr) <= last_line) { CORE_ADDR addr = lptr.l_addr.l_paddr; - addr += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); - record_line (current_subfile, first_line + L_LNNO32 (&lptr), + addr += ANOFFSET (objfile->section_offsets, + SECT_OFF_TEXT (objfile)); + record_line (current_subfile, + first_line + L_LNNO32 (&lptr), gdbarch_addr_bits_remove (gdbarch, addr)); } else @@ -1414,20 +1447,25 @@ patch_type (struct type *type, struct type *real_type) TYPE_LENGTH (target) = TYPE_LENGTH (real_target); TYPE_NFIELDS (target) = TYPE_NFIELDS (real_target); - TYPE_FIELDS (target) = (struct field *) TYPE_ALLOC (target, field_size); + TYPE_FIELDS (target) = (struct field *) TYPE_ALLOC (target, + field_size); - memcpy (TYPE_FIELDS (target), TYPE_FIELDS (real_target), field_size); + memcpy (TYPE_FIELDS (target), + TYPE_FIELDS (real_target), + field_size); if (TYPE_NAME (real_target)) { if (TYPE_NAME (target)) xfree (TYPE_NAME (target)); - TYPE_NAME (target) = concat (TYPE_NAME (real_target), (char *)NULL); + TYPE_NAME (target) = concat (TYPE_NAME (real_target), + (char *) NULL); } } /* Patch up all appropriate typedef symbols in the opaque_type_chains - so that they can be used to print out opaque data structures properly. */ + so that they can be used to print out opaque data structures + properly. */ static void patch_opaque_types (struct symtab *s) @@ -1436,7 +1474,7 @@ patch_opaque_types (struct symtab *s) struct dict_iterator iter; struct symbol *real_sym; - /* Go through the per-file symbols only */ + /* Go through the per-file symbols only. */ b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK); ALL_BLOCK_SYMBOLS (b, iter, real_sym) { @@ -1522,9 +1560,11 @@ process_coff_symbol (struct coff_symbol *cs, if (ISFCN (cs->c_type)) { - SYMBOL_VALUE (sym) += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); + SYMBOL_VALUE (sym) += ANOFFSET (objfile->section_offsets, + SECT_OFF_TEXT (objfile)); SYMBOL_TYPE (sym) = - lookup_function_type (decode_function_type (cs, cs->c_type, aux, objfile)); + lookup_function_type (decode_function_type (cs, cs->c_type, + aux, objfile)); SYMBOL_CLASS (sym) = LOC_BLOCK; if (cs->c_sclass == C_STAT || cs->c_sclass == C_THUMBSTAT @@ -1552,7 +1592,8 @@ process_coff_symbol (struct coff_symbol *cs, case C_EXT: SYMBOL_CLASS (sym) = LOC_STATIC; SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; - SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); + SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, + SECT_OFF_TEXT (objfile)); add_symbol_to_list (sym, &global_symbols); break; @@ -1561,15 +1602,16 @@ process_coff_symbol (struct coff_symbol *cs, case C_STAT: SYMBOL_CLASS (sym) = LOC_STATIC; SYMBOL_VALUE_ADDRESS (sym) = (CORE_ADDR) cs->c_value; - SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); + SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, + SECT_OFF_TEXT (objfile)); if (within_function) { - /* Static symbol of local scope */ + /* Static symbol of local scope. */ add_symbol_to_list (sym, &local_symbols); } else { - /* Static symbol at top level of file */ + /* Static symbol at top level of file. */ add_symbol_to_list (sym, &file_symbols); } break; @@ -1612,19 +1654,19 @@ process_coff_symbol (struct coff_symbol *cs, if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_FUNC) { - /* If we are giving a name to a type such as "pointer to - foo" or "function returning foo", we better not set - the TYPE_NAME. If the program contains "typedef char - *caddr_t;", we don't want all variables of type char - * to print as caddr_t. This is not just a - consequence of GDB's type management; CC and GCC (at - least through version 2.4) both output variables of - either type char * or caddr_t with the type - refering to the C_TPDEF symbol for caddr_t. If a future - compiler cleans this up it GDB is not ready for it - yet, but if it becomes ready we somehow need to - disable this check (without breaking the PCC/GCC2.4 - case). + /* If we are giving a name to a type such as + "pointer to foo" or "function returning foo", we + better not set the TYPE_NAME. If the program + contains "typedef char *caddr_t;", we don't want + all variables of type char * to print as caddr_t. + This is not just a consequence of GDB's type + management; CC and GCC (at least through version + 2.4) both output variables of either type char * + or caddr_t with the type refering to the C_TPDEF + symbol for caddr_t. If a future compiler cleans + this up it GDB is not ready for it yet, but if it + becomes ready we somehow need to disable this + check (without breaking the PCC/GCC2.4 case). Sigh. @@ -1634,14 +1676,15 @@ process_coff_symbol (struct coff_symbol *cs, } else TYPE_NAME (SYMBOL_TYPE (sym)) = - concat (SYMBOL_LINKAGE_NAME (sym), (char *)NULL); + concat (SYMBOL_LINKAGE_NAME (sym), (char *) NULL); } - /* Keep track of any type which points to empty structured type, - so it can be filled from a definition from another file. A - simple forward reference (TYPE_CODE_UNDEF) is not an - empty structured type, though; the forward references - work themselves out via the magic of coff_lookup_type. */ + /* Keep track of any type which points to empty structured + type, so it can be filled from a definition from another + file. A simple forward reference (TYPE_CODE_UNDEF) is + not an empty structured type, though; the forward + references work themselves out via the magic of + coff_lookup_type. */ if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_PTR && TYPE_LENGTH (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) == 0 && TYPE_CODE (TYPE_TARGET_TYPE (SYMBOL_TYPE (sym))) @@ -1663,7 +1706,7 @@ process_coff_symbol (struct coff_symbol *cs, /* Some compilers try to be helpful by inventing "fake" names for anonymous enums, structures, and unions, like - "~0fake" or ".0fake". Thanks, but no thanks... */ + "~0fake" or ".0fake". Thanks, but no thanks... */ if (TYPE_TAG_NAME (SYMBOL_TYPE (sym)) == 0) if (SYMBOL_LINKAGE_NAME (sym) != NULL && *SYMBOL_LINKAGE_NAME (sym) != '~' @@ -1710,11 +1753,11 @@ decode_type (struct coff_symbol *cs, unsigned int c_type, struct type *base_type, *index_type, *range_type; /* Define an array type. */ - /* auxent refers to array, not base type */ + /* auxent refers to array, not base type. */ if (aux->x_sym.x_tagndx.l == 0) cs->c_naux = 0; - /* shift the indices down */ + /* Shift the indices down. */ dim = &aux->x_sym.x_fcnary.x_ary.x_dimen[0]; i = 1; n = dim[0]; @@ -1725,20 +1768,21 @@ decode_type (struct coff_symbol *cs, unsigned int c_type, base_type = decode_type (cs, new_c_type, aux, objfile); index_type = objfile_type (objfile)->builtin_int; range_type = - create_range_type ((struct type *) NULL, index_type, 0, n - 1); + create_range_type ((struct type *) NULL, + index_type, 0, n - 1); type = - create_array_type ((struct type *) NULL, base_type, range_type); + create_array_type ((struct type *) NULL, + base_type, range_type); } return type; } - /* Reference to existing type. This only occurs with the - struct, union, and enum types. EPI a29k coff - fakes us out by producing aux entries with a nonzero - x_tagndx for definitions of structs, unions, and enums, so we - have to check the c_sclass field. SCO 3.2v4 cc gets confused - with pointers to pointers to defined structs, and generates - negative x_tagndx fields. */ + /* Reference to existing type. This only occurs with the struct, + union, and enum types. EPI a29k coff fakes us out by producing + aux entries with a nonzero x_tagndx for definitions of structs, + unions, and enums, so we have to check the c_sclass field. SCO + 3.2v4 cc gets confused with pointers to pointers to defined + structs, and generates negative x_tagndx fields. */ if (cs->c_naux > 0 && aux->x_sym.x_tagndx.l != 0) { if (cs->c_sclass != C_STRTAG @@ -1754,7 +1798,7 @@ decode_type (struct coff_symbol *cs, unsigned int c_type, complaint (&symfile_complaints, _("Symbol table entry for %s has bad tagndx value"), cs->c_name); - /* And fall through to decode_base_type... */ + /* And fall through to decode_base_type... */ } } @@ -1765,20 +1809,25 @@ decode_type (struct coff_symbol *cs, unsigned int c_type, return the type that the function returns. */ static struct type * -decode_function_type (struct coff_symbol *cs, unsigned int c_type, - union internal_auxent *aux, struct objfile *objfile) +decode_function_type (struct coff_symbol *cs, + unsigned int c_type, + union internal_auxent *aux, + struct objfile *objfile) { if (aux->x_sym.x_tagndx.l == 0) - cs->c_naux = 0; /* auxent refers to function, not base type */ + cs->c_naux = 0; /* auxent refers to function, not base + type. */ return decode_type (cs, DECREF (c_type), aux, objfile); } -/* basic C types */ +/* Basic C types. */ static struct type * -decode_base_type (struct coff_symbol *cs, unsigned int c_type, - union internal_auxent *aux, struct objfile *objfile) +decode_base_type (struct coff_symbol *cs, + unsigned int c_type, + union internal_auxent *aux, + struct objfile *objfile) { struct gdbarch *gdbarch = get_objfile_arch (objfile); struct type *type; @@ -1786,7 +1835,7 @@ decode_base_type (struct coff_symbol *cs, unsigned int c_type, switch (c_type) { case T_NULL: - /* shows up with "void (*foo)();" structure members */ + /* Shows up with "void (*foo)();" structure members. */ return objfile_type (objfile)->builtin_void; #ifdef T_VOID @@ -1824,13 +1873,13 @@ decode_base_type (struct coff_symbol *cs, unsigned int c_type, case T_STRUCT: if (cs->c_naux != 1) { - /* anonymous structure type */ + /* Anonymous structure type. */ type = coff_alloc_type (cs->c_symnum); TYPE_CODE (type) = TYPE_CODE_STRUCT; TYPE_NAME (type) = NULL; - /* This used to set the tag to "<opaque>". But I think setting it - to NULL is right, and the printing code can print it as - "struct {...}". */ + /* This used to set the tag to "<opaque>". But I think + setting it to NULL is right, and the printing code can + print it as "struct {...}". */ TYPE_TAG_NAME (type) = NULL; INIT_CPLUS_SPECIFIC (type); TYPE_LENGTH (type) = 0; @@ -1849,12 +1898,12 @@ decode_base_type (struct coff_symbol *cs, unsigned int c_type, case T_UNION: if (cs->c_naux != 1) { - /* anonymous union type */ + /* Anonymous union type. */ type = coff_alloc_type (cs->c_symnum); TYPE_NAME (type) = NULL; - /* This used to set the tag to "<opaque>". But I think setting it - to NULL is right, and the printing code can print it as - "union {...}". */ + /* This used to set the tag to "<opaque>". But I think + setting it to NULL is right, and the printing code can + print it as "union {...}". */ TYPE_TAG_NAME (type) = NULL; INIT_CPLUS_SPECIFIC (type); TYPE_LENGTH (type) = 0; @@ -1874,13 +1923,13 @@ decode_base_type (struct coff_symbol *cs, unsigned int c_type, case T_ENUM: if (cs->c_naux != 1) { - /* anonymous enum type */ + /* Anonymous enum type. */ type = coff_alloc_type (cs->c_symnum); TYPE_CODE (type) = TYPE_CODE_ENUM; TYPE_NAME (type) = NULL; - /* This used to set the tag to "<opaque>". But I think setting it - to NULL is right, and the printing code can print it as - "enum {...}". */ + /* This used to set the tag to "<opaque>". But I think + setting it to NULL is right, and the printing code can + print it as "enum {...}". */ TYPE_TAG_NAME (type) = NULL; TYPE_LENGTH (type) = 0; TYPE_FIELDS (type) = 0; @@ -1896,7 +1945,7 @@ decode_base_type (struct coff_symbol *cs, unsigned int c_type, return type; case T_MOE: - /* shouldn't show up here */ + /* Shouldn't show up here. */ break; case T_UCHAR: @@ -1916,7 +1965,8 @@ decode_base_type (struct coff_symbol *cs, unsigned int c_type, else return objfile_type (objfile)->builtin_unsigned_long; } - complaint (&symfile_complaints, _("Unexpected type for symbol %s"), cs->c_name); + complaint (&symfile_complaints, + _("Unexpected type for symbol %s"), cs->c_name); return objfile_type (objfile)->builtin_void; } @@ -1969,10 +2019,10 @@ coff_read_struct_type (int index, int length, int lastsym, list = new; /* Save the data. */ - list->field.name = - obsavestring (name, strlen (name), &objfile->objfile_obstack); - FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, &sub_aux, - objfile); + list->field.name = obsavestring (name, strlen (name), + &objfile->objfile_obstack); + FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, + &sub_aux, objfile); SET_FIELD_BITPOS (list->field, 8 * ms->c_value); FIELD_BITSIZE (list->field) = 0; nfields++; @@ -1986,10 +2036,10 @@ coff_read_struct_type (int index, int length, int lastsym, list = new; /* Save the data. */ - list->field.name = - obsavestring (name, strlen (name), &objfile->objfile_obstack); - FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, &sub_aux, - objfile); + list->field.name = obsavestring (name, strlen (name), + &objfile->objfile_obstack); + FIELD_TYPE (list->field) = decode_type (ms, ms->c_type, + &sub_aux, objfile); SET_FIELD_BITPOS (list->field, ms->c_value); FIELD_BITSIZE (list->field) = sub_aux.x_sym.x_misc.x_lnsz.x_size; nfields++; @@ -2124,20 +2174,27 @@ coff_read_enum_type (int index, int length, int lastsym, return type; } -/* Register our ability to parse symbols for coff BFD files. */ +/* Register our ability to parse symbols for coff BFD files. */ static const struct sym_fns coff_sym_fns = { bfd_target_coff_flavour, - coff_new_init, /* sym_new_init: init anything gbl to entire symtab */ - coff_symfile_init, /* sym_init: read initial info, setup for sym_read() */ - coff_symfile_read, /* sym_read: read a symbol file into symtab */ - coff_symfile_finish, /* sym_finish: finished with file, cleanup */ - default_symfile_offsets, /* sym_offsets: xlate external to internal form */ - default_symfile_segments, /* sym_segments: Get segment information from - a file. */ + coff_new_init, /* sym_new_init: init anything gbl to + entire symtab */ + coff_symfile_init, /* sym_init: read initial info, setup + for sym_read() */ + coff_symfile_read, /* sym_read: read a symbol file into + symtab */ + coff_symfile_finish, /* sym_finish: finished with file, + cleanup */ + default_symfile_offsets, /* sym_offsets: xlate external to + internal form */ + default_symfile_segments, /* sym_segments: Get segment + information from a file */ NULL, /* sym_read_linetable */ - default_symfile_relocate, /* sym_relocate: Relocate a debug section. */ + + default_symfile_relocate, /* sym_relocate: Relocate a debug + section. */ &psym_functions }; |