diff options
Diffstat (limited to 'gdb/hp-psymtab-read.c')
| -rw-r--r-- | gdb/hp-psymtab-read.c | 2381 |
1 files changed, 0 insertions, 2381 deletions
diff --git a/gdb/hp-psymtab-read.c b/gdb/hp-psymtab-read.c deleted file mode 100644 index 5926ada..0000000 --- a/gdb/hp-psymtab-read.c +++ /dev/null @@ -1,2381 +0,0 @@ -/* Read hp debug symbols and convert to internal format, for GDB. - Copyright 1993, 1996, 1998, 1999 Free Software Foundation, Inc. - - This file is part of GDB. - - This program 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 of the License, or - (at your option) any later version. - - This program 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 this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - - Written by the Center for Software Science at the University of Utah - and by Cygnus Support. */ - -/* Common include file for hp_symtab_read.c and hp_psymtab_read.c. - This has nested includes of a bunch of stuff. */ -#include "hpread.h" -#include "demangle.h" - -/* To generate dumping code, uncomment this define. The dumping - itself is controlled by routine-local statics called "dumping". */ -/* #define DUMPING 1 */ - -/* To use the quick look-up tables, uncomment this define. */ -#define QUICK_LOOK_UP 1 - -/* To call PXDB to process un-processed files, uncomment this define. */ -#define USE_PXDB 1 - -/* Forward procedure declarations */ - -void hpread_symfile_init - PARAMS ((struct objfile *)); - -void -do_pxdb PARAMS ((bfd *)); - -void hpread_build_psymtabs - PARAMS ((struct objfile *, struct section_offsets *, int)); - -void hpread_symfile_finish - PARAMS ((struct objfile *)); - -static union dnttentry *hpread_get_gntt - PARAMS ((int, struct objfile *)); - -static unsigned long hpread_get_textlow - PARAMS ((int, int, struct objfile *, int)); - -static struct partial_symtab *hpread_start_psymtab - PARAMS ((struct objfile *, struct section_offsets *, char *, CORE_ADDR, int, - struct partial_symbol **, struct partial_symbol **)); - -static struct partial_symtab *hpread_end_psymtab - PARAMS ((struct partial_symtab *, char **, int, int, CORE_ADDR, - struct partial_symtab **, int)); - -/* End of forward routine declarations */ - -#ifdef USE_PXDB - -/* NOTE use of system files! May not be portable. */ - -#define PXDB_SVR4 "/opt/langtools/bin/pxdb" -#define PXDB_BSD "/usr/bin/pxdb" - -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -/* check for the existance of a file, given its full pathname */ -int -file_exists (filename) - char *filename; -{ - if (filename) - return (access (filename, F_OK) == 0); - return 0; -} - - -/* Translate from the "hp_language" enumeration in hp-symtab.h - used in the debug info to gdb's generic enumeration in defs.h. */ -static enum language -trans_lang (in_lang) - enum hp_language in_lang; -{ - if (in_lang == HP_LANGUAGE_C) - return language_c; - - else if (in_lang == HP_LANGUAGE_CPLUSPLUS) - return language_cplus; - - else if (in_lang == HP_LANGUAGE_F77) - return language_fortran; - - else - return language_unknown; -} - -static char main_string[] = "main"; - -/* Call PXDB to process our file. - - Approach copied from DDE's "dbgk_run_pxdb". Note: we - don't check for BSD location of pxdb, nor for existance - of pxdb itself, etc. - - NOTE: uses system function and string functions directly. - - Return value: 1 if ok, 0 if not */ -int -hpread_call_pxdb (file_name) - char *file_name; -{ - char *p; - int status; - int retval; - - if (file_exists (PXDB_SVR4)) - { - p = malloc (strlen (PXDB_SVR4) + strlen (file_name) + 2); - strcpy (p, PXDB_SVR4); - strcat (p, " "); - strcat (p, file_name); - - warning ("File not processed by pxdb--about to process now.\n"); - status = system (p); - - retval = (status == 0); - } - else - { - warning ("pxdb not found at standard location: /opt/langtools/bin\ngdb will not be able to debug %s.\nPlease install pxdb at the above location and then restart gdb.\nYou can also run pxdb on %s with the command\n\"pxdb %s\" and then restart gdb.", file_name, file_name, file_name); - - retval = 0; - } - return retval; -} /* hpread_call_pxdb */ - - -/* Return 1 if the file turns out to need pre-processing - by PXDB, and we have thus called PXDB to do this processing - and the file therefore needs to be re-loaded. Otherwise - return 0. */ -int -hpread_pxdb_needed (sym_bfd) - bfd *sym_bfd; -{ - asection *pinfo_section, *debug_section, *header_section; - unsigned int do_pxdb; - char *buf; - bfd_size_type header_section_size; - - unsigned long tmp; - unsigned int pxdbed; - - header_section = bfd_get_section_by_name (sym_bfd, "$HEADER$"); - if (!header_section) - { - return 0; /* No header at all, can't recover... */ - } - - debug_section = bfd_get_section_by_name (sym_bfd, "$DEBUG$"); - pinfo_section = bfd_get_section_by_name (sym_bfd, "$PINFO$"); - - if (pinfo_section && !debug_section) - { - /* Debug info with DOC, has different header format. - this only happens if the file was pxdbed and compiled optimized - otherwise the PINFO section is not there. */ - header_section_size = bfd_section_size (objfile->obfd, header_section); - - if (header_section_size == (bfd_size_type) sizeof (DOC_info_PXDB_header)) - { - buf = alloca (sizeof (DOC_info_PXDB_header)); - - if (!bfd_get_section_contents (sym_bfd, - header_section, - buf, 0, - header_section_size)) - error ("bfd_get_section_contents\n"); - - tmp = bfd_get_32 (sym_bfd, (bfd_byte *) (buf + sizeof (int) * 4)); - pxdbed = (tmp >> 31) & 0x1; - - if (!pxdbed) - error ("file debug header info invalid\n"); - do_pxdb = 0; - } - - else - error ("invalid $HEADER$ size in executable \n"); - } - - else - { - - /* this can be three different cases: - 1. pxdbed and not doc - - DEBUG and HEADER sections are there - - header is PXDB_header type - - pxdbed flag is set to 1 - - 2. not pxdbed and doc - - DEBUG and HEADER sections are there - - header is DOC_info_header type - - pxdbed flag is set to 0 - - 3. not pxdbed and not doc - - DEBUG and HEADER sections are there - - header is XDB_header type - - pxdbed flag is set to 0 - - NOTE: the pxdbed flag is meaningful also in the not - already pxdb processed version of the header, - because in case on non-already processed by pxdb files - that same bit in the header would be always zero. - Why? Because the bit is the leftmost bit of a word - which contains a 'length' which is always a positive value - so that bit is never set to 1 (otherwise it would be negative) - - Given the above, we have two choices : either we ignore the - size of the header itself and just look at the pxdbed field, - or we check the size and then we (for safety and paranoia related - issues) check the bit. - The first solution is used by DDE, the second by PXDB itself. - I am using the second one here, because I already wrote it, - and it is the end of a long day. - Also, using the first approach would still involve size issues - because we need to read in the contents of the header section, and - give the correct amount of stuff we want to read to the - get_bfd_section_contents function. */ - - /* decide which case depending on the size of the header section. - The size is as defined in hp-symtab.h */ - - header_section_size = bfd_section_size (objfile->obfd, header_section); - - if (header_section_size == (bfd_size_type) sizeof (PXDB_header)) /* pxdb and not doc */ - { - - buf = alloca (sizeof (PXDB_header)); - if (!bfd_get_section_contents (sym_bfd, - header_section, - buf, 0, - header_section_size)) - error ("bfd_get_section_contents\n"); - - tmp = bfd_get_32 (sym_bfd, (bfd_byte *) (buf + sizeof (int) * 3)); - pxdbed = (tmp >> 31) & 0x1; - - if (pxdbed) - do_pxdb = 0; - else - error ("file debug header invalid\n"); - } - else /*not pxdbed and doc OR not pxdbed and non doc */ - do_pxdb = 1; - } - - if (do_pxdb) - { - return 1; - } - else - { - return 0; - } -} /* hpread_pxdb_needed */ - -#endif - -/* Check whether the file needs to be preprocessed by pxdb. - If so, call pxdb. */ - -void -do_pxdb (sym_bfd) - bfd *sym_bfd; -{ - /* The following code is HP-specific. The "right" way of - doing this is unknown, but we bet would involve a target- - specific pre-file-load check using a generic mechanism. */ - - /* This code will not be executed if the file is not in SOM - format (i.e. if compiled with gcc) */ - if (hpread_pxdb_needed (sym_bfd)) - { - /*This file has not been pre-processed. Preprocess now */ - - if (hpread_call_pxdb (sym_bfd->filename)) - { - /* The call above has changed the on-disk file, - we can close the file anyway, because the - symbols will be reread in when the target is run */ - bfd_close (sym_bfd); - } - } -} - - - -#ifdef QUICK_LOOK_UP - -/* Code to handle quick lookup-tables follows. */ - - -/* Some useful macros */ -#define VALID_FILE(i) ((i) < pxdb_header_p->fd_entries) -#define VALID_MODULE(i) ((i) < pxdb_header_p->md_entries) -#define VALID_PROC(i) ((i) < pxdb_header_p->pd_entries) -#define VALID_CLASS(i) ((i) < pxdb_header_p->cd_entries) - -#define FILE_START(i) (qFD[i].adrStart) -#define MODULE_START(i) (qMD[i].adrStart) -#define PROC_START(i) (qPD[i].adrStart) - -#define FILE_END(i) (qFD[i].adrEnd) -#define MODULE_END(i) (qMD[i].adrEnd) -#define PROC_END(i) (qPD[i].adrEnd) - -#define FILE_ISYM(i) (qFD[i].isym) -#define MODULE_ISYM(i) (qMD[i].isym) -#define PROC_ISYM(i) (qPD[i].isym) - -#define VALID_CURR_FILE (curr_fd < pxdb_header_p->fd_entries) -#define VALID_CURR_MODULE (curr_md < pxdb_header_p->md_entries) -#define VALID_CURR_PROC (curr_pd < pxdb_header_p->pd_entries) -#define VALID_CURR_CLASS (curr_cd < pxdb_header_p->cd_entries) - -#define CURR_FILE_START (qFD[curr_fd].adrStart) -#define CURR_MODULE_START (qMD[curr_md].adrStart) -#define CURR_PROC_START (qPD[curr_pd].adrStart) - -#define CURR_FILE_END (qFD[curr_fd].adrEnd) -#define CURR_MODULE_END (qMD[curr_md].adrEnd) -#define CURR_PROC_END (qPD[curr_pd].adrEnd) - -#define CURR_FILE_ISYM (qFD[curr_fd].isym) -#define CURR_MODULE_ISYM (qMD[curr_md].isym) -#define CURR_PROC_ISYM (qPD[curr_pd].isym) - -#define TELL_OBJFILE \ - do { \ - if( !told_objfile ) { \ - told_objfile = 1; \ - warning ("\nIn object file \"%s\":\n", \ - objfile->name); \ - } \ - } while (0) - - - -/* Keeping track of the start/end symbol table (LNTT) indices of - psymtabs created so far */ - -typedef struct - { - int start; - int end; - } -pst_syms_struct; - -static pst_syms_struct *pst_syms_array = 0; - -static pst_syms_count = 0; -static pst_syms_size = 0; - -/* used by the TELL_OBJFILE macro */ -static boolean told_objfile = 0; - -/* Set up psymtab symbol index stuff */ -static void -init_pst_syms () -{ - pst_syms_count = 0; - pst_syms_size = 20; - pst_syms_array = (pst_syms_struct *) xmalloc (20 * sizeof (pst_syms_struct)); -} - -/* Clean up psymtab symbol index stuff */ -static void -clear_pst_syms () -{ - pst_syms_count = 0; - pst_syms_size = 0; - free (pst_syms_array); - pst_syms_array = 0; -} - -/* Add information about latest psymtab to symbol index table */ -static void -record_pst_syms (start_sym, end_sym) - int start_sym; - int end_sym; -{ - if (++pst_syms_count > pst_syms_size) - { - pst_syms_array = (pst_syms_struct *) xrealloc (pst_syms_array, - 2 * pst_syms_size * sizeof (pst_syms_struct)); - pst_syms_size *= 2; - } - pst_syms_array[pst_syms_count - 1].start = start_sym; - pst_syms_array[pst_syms_count - 1].end = end_sym; -} - -/* Find a suitable symbol table index which can serve as the upper - bound of a psymtab that starts at INDEX - - This scans backwards in the psymtab symbol index table to find a - "hole" in which the given index can fit. This is a heuristic!! - We don't search the entire table to check for multiple holes, - we don't care about overlaps, etc. - - Return 0 => not found */ -static int -find_next_pst_start (index) - int index; -{ - int i; - - for (i = pst_syms_count - 1; i >= 0; i--) - if (pst_syms_array[i].end <= index) - return (i == pst_syms_count - 1) ? 0 : pst_syms_array[i + 1].start - 1; - - if (pst_syms_array[0].start > index) - return pst_syms_array[0].start - 1; - - return 0; -} - - - -/* Utility functions to find the ending symbol index for a psymtab */ - -/* Find the next file entry that begins beyond INDEX, and return - its starting symbol index - 1. - QFD is the file table, CURR_FD is the file entry from where to start, - PXDB_HEADER_P as in hpread_quick_traverse (to allow macros to work). - - Return 0 => not found */ -static int -find_next_file_isym (index, qFD, curr_fd, pxdb_header_p) - int index; - quick_file_entry *qFD; - int curr_fd; - PXDB_header_ptr pxdb_header_p; -{ - while (VALID_CURR_FILE) - { - if (CURR_FILE_ISYM >= index) - return CURR_FILE_ISYM - 1; - curr_fd++; - } - return 0; -} - -/* Find the next procedure entry that begins beyond INDEX, and return - its starting symbol index - 1. - QPD is the procedure table, CURR_PD is the proc entry from where to start, - PXDB_HEADER_P as in hpread_quick_traverse (to allow macros to work). - - Return 0 => not found */ -static int -find_next_proc_isym (index, qPD, curr_pd, pxdb_header_p) - int index; - quick_procedure_entry *qPD; - int curr_pd; - PXDB_header_ptr pxdb_header_p; -{ - while (VALID_CURR_PROC) - { - if (CURR_PROC_ISYM >= index) - return CURR_PROC_ISYM - 1; - curr_pd++; - } - return 0; -} - -/* Find the next module entry that begins beyond INDEX, and return - its starting symbol index - 1. - QMD is the module table, CURR_MD is the modue entry from where to start, - PXDB_HEADER_P as in hpread_quick_traverse (to allow macros to work). - - Return 0 => not found */ -static int -find_next_module_isym (index, qMD, curr_md, pxdb_header_p) - int index; - quick_module_entry *qMD; - int curr_md; - PXDB_header_ptr pxdb_header_p; -{ - while (VALID_CURR_MODULE) - { - if (CURR_MODULE_ISYM >= index) - return CURR_MODULE_ISYM - 1; - curr_md++; - } - return 0; -} - -/* Scan and record partial symbols for all functions starting from index - pointed to by CURR_PD_P, and between code addresses START_ADR and END_ADR. - Other parameters are explained in comments below. */ - -/* This used to be inline in hpread_quick_traverse, but now that we do essentially the - same thing for two different cases (modules and module-less files), it's better - organized in a separate routine, although it does take lots of arguments. pai/1997-10-08 */ - -static int -scan_procs (curr_pd_p, qPD, max_procs, start_adr, end_adr, pst, vt_bits, objfile, section_offsets) - int *curr_pd_p; /* pointer to current proc index */ - quick_procedure_entry *qPD; /* the procedure quick lookup table */ - int max_procs; /* number of entries in proc. table */ - CORE_ADDR start_adr; /* beginning of code range for current psymtab */ - CORE_ADDR end_adr; /* end of code range for current psymtab */ - struct partial_symtab *pst; /* current psymtab */ - char *vt_bits; /* strings table of SOM debug space */ - struct objfile *objfile; /* current object file */ - struct section_offsets *section_offsets; /* not really used for HP-UX currently */ -{ - union dnttentry *dn_bufp; - int symbol_count = 0; /* Total number of symbols in this psymtab */ - int curr_pd = *curr_pd_p; /* Convenience variable -- avoid dereferencing pointer all the time */ - -#ifdef DUMPING - /* Turn this on for lots of debugging information in this routine */ - static int dumping = 0; -#endif - -#ifdef DUMPING - if (dumping) - { - printf ("Scan_procs called, addresses %x to %x, proc %x\n", start_adr, end_adr, curr_pd); - } -#endif - - while ((CURR_PROC_START <= end_adr) && (curr_pd < max_procs)) - { - - char *rtn_name; /* mangled name */ - char *rtn_dem_name; /* qualified demangled name */ - char *class_name; - int class; - - if ((trans_lang ((enum hp_language) qPD[curr_pd].language) == language_cplus) && - vt_bits[(long) qPD[curr_pd].sbAlias]) /* not a null string */ - { - /* Get mangled name for the procedure, and demangle it */ - rtn_name = &vt_bits[(long) qPD[curr_pd].sbAlias]; - rtn_dem_name = cplus_demangle (rtn_name, DMGL_ANSI | DMGL_PARAMS); - } - else - { - rtn_name = &vt_bits[(long) qPD[curr_pd].sbProc]; - rtn_dem_name = NULL; - } - - /* Hack to get around HP C/C++ compilers' insistence on providing - "_MAIN_" as an alternate name for "main" */ - if ((strcmp (rtn_name, "_MAIN_") == 0) && - (strcmp (&vt_bits[(long) qPD[curr_pd].sbProc], "main") == 0)) - rtn_dem_name = rtn_name = main_string; - -#ifdef DUMPING - if (dumping) - { - printf ("..add %s (demangled %s), index %x to this psymtab\n", rtn_name, rtn_dem_name, curr_pd); - } -#endif - - /* Check for module-spanning routines. */ - if (CURR_PROC_END > end_adr) - { - TELL_OBJFILE; - warning ("Procedure \"%s\" [0x%x] spans file or module boundaries.", rtn_name, curr_pd); - } - - /* Add this routine symbol to the list in the objfile. - Unfortunately we have to go to the LNTT to determine the - correct list to put it on. An alternative (which the - code used to do) would be to not check and always throw - it on the "static" list. But if we go that route, then - symbol_lookup() needs to be tweaked a bit to account - for the fact that the function might not be found on - the correct list in the psymtab. - RT */ - dn_bufp = hpread_get_lntt (qPD[curr_pd].isym, objfile); - if (dn_bufp->dfunc.global) - add_psymbol_with_dem_name_to_list (rtn_name, - strlen (rtn_name), - rtn_dem_name, - strlen (rtn_dem_name), - VAR_NAMESPACE, - LOC_BLOCK, /* "I am a routine" */ - &objfile->global_psymbols, - (qPD[curr_pd].adrStart + /* Starting address of rtn */ - ANOFFSET (section_offsets, SECT_OFF_TEXT)), - 0, /* core addr?? */ - trans_lang ((enum hp_language) qPD[curr_pd].language), - objfile); - else - add_psymbol_with_dem_name_to_list (rtn_name, - strlen (rtn_name), - rtn_dem_name, - strlen (rtn_dem_name), - VAR_NAMESPACE, - LOC_BLOCK, /* "I am a routine" */ - &objfile->static_psymbols, - (qPD[curr_pd].adrStart + /* Starting address of rtn */ - ANOFFSET (section_offsets, SECT_OFF_TEXT)), - 0, /* core addr?? */ - trans_lang ((enum hp_language) qPD[curr_pd].language), - objfile); - - symbol_count++; - *curr_pd_p = ++curr_pd; /* bump up count & reflect in caller */ - } /* loop over procedures */ - -#ifdef DUMPING - if (dumping) - { - if (symbol_count == 0) - printf ("Scan_procs: no symbols found!\n"); - } -#endif - - return symbol_count; -} - - -/* Traverse the quick look-up tables, building a set of psymtabs. - - This constructs a psymtab for modules and files in the quick lookup - tables. - - Mostly, modules correspond to compilation units, so we try to - create psymtabs that correspond to modules; however, in some cases - a file can result in a compiled object which does not have a module - entry for it, so in such cases we create a psymtab for the file. */ - -int -hpread_quick_traverse (objfile, section_offsets, gntt_bits, vt_bits, pxdb_header_p) - struct objfile *objfile; /* The object file descriptor */ - struct section_offsets *section_offsets; /* ?? Null for HP */ - char *gntt_bits; /* GNTT entries, loaded in from the file */ - char *vt_bits; /* VT (string) entries ditto. */ - PXDB_header_ptr pxdb_header_p; /* Pointer to pxdb header ditto */ -{ - struct partial_symtab *pst; - - char *addr; - - quick_procedure_entry *qPD; - quick_file_entry *qFD; - quick_module_entry *qMD; - quick_class_entry *qCD; - - int idx; - int i; - CORE_ADDR start_adr; /* current psymtab's starting code addr */ - CORE_ADDR end_adr; /* current psymtab's ending code addr */ - CORE_ADDR next_mod_adr; /* next module's starting code addr */ - int curr_pd; /* current procedure */ - int curr_fd; /* current file */ - int curr_md; /* current module */ - int start_sym; /* current psymtab's starting symbol index */ - int end_sym; /* current psymtab's ending symbol index */ - int max_LNTT_sym_index; - int syms_in_pst; - B_TYPE *class_entered; - - struct partial_symbol **global_syms; /* We'll be filling in the "global" */ - struct partial_symbol **static_syms; /* and "static" tables in the objfile - as we go, so we need a pair of - current pointers. */ - -#ifdef DUMPING - /* Turn this on for lots of debugging information in this routine. - You get a blow-by-blow account of quick lookup table reading */ - static int dumping = 0; -#endif - - pst = (struct partial_symtab *) 0; - - /* Clear out some globals */ - init_pst_syms (); - told_objfile = 0; - - /* Demangling style -- if EDG style already set, don't change it, - as HP style causes some problems with the KAI EDG compiler */ - if (current_demangling_style != edg_demangling) - { - /* Otherwise, ensure that we are using HP style demangling */ - set_demangling_style (HP_DEMANGLING_STYLE_STRING); - } - - /* First we need to find the starting points of the quick - look-up tables in the GNTT. */ - - addr = gntt_bits; - - qPD = (quick_procedure_entry_ptr) addr; - addr += pxdb_header_p->pd_entries * sizeof (quick_procedure_entry); - -#ifdef DUMPING - if (dumping) - { - printf ("\n Printing routines as we see them\n"); - for (i = 0; VALID_PROC (i); i++) - { - idx = (long) qPD[i].sbProc; - printf ("%s %x..%x\n", &vt_bits[idx], - (int) PROC_START (i), - (int) PROC_END (i)); - } - } -#endif - - qFD = (quick_file_entry_ptr) addr; - addr += pxdb_header_p->fd_entries * sizeof (quick_file_entry); - -#ifdef DUMPING - if (dumping) - { - printf ("\n Printing files as we see them\n"); - for (i = 0; VALID_FILE (i); i++) - { - idx = (long) qFD[i].sbFile; - printf ("%s %x..%x\n", &vt_bits[idx], - (int) FILE_START (i), - (int) FILE_END (i)); - } - } -#endif - - qMD = (quick_module_entry_ptr) addr; - addr += pxdb_header_p->md_entries * sizeof (quick_module_entry); - -#ifdef DUMPING - if (dumping) - { - printf ("\n Printing modules as we see them\n"); - for (i = 0; i < pxdb_header_p->md_entries; i++) - { - idx = (long) qMD[i].sbMod; - printf ("%s\n", &vt_bits[idx]); - } - } -#endif - - qCD = (quick_class_entry_ptr) addr; - addr += pxdb_header_p->cd_entries * sizeof (quick_class_entry); - -#ifdef DUMPING - if (dumping) - { - printf ("\n Printing classes as we see them\n"); - for (i = 0; VALID_CLASS (i); i++) - { - idx = (long) qCD[i].sbClass; - printf ("%s\n", &vt_bits[idx]); - } - - printf ("\n Done with dump, on to build!\n"); - } -#endif - - /* We need this index only while hp-symtab-read.c expects - a byte offset to the end of the LNTT entries for a given - psymtab. Thus the need for it should go away someday. - - When it goes away, then we won't have any need to load the - LNTT from the objfile at psymtab-time, and start-up will be - faster. To make that work, we'll need some way to create - a null pst for the "globals" pseudo-module. */ - max_LNTT_sym_index = LNTT_SYMCOUNT (objfile); - - /* Scan the module descriptors and make a psymtab for each. - - We know the MDs, FDs and the PDs are in order by starting - address. We use that fact to traverse all three arrays in - parallel, knowing when the next PD is in a new file - and we need to create a new psymtab. */ - curr_pd = 0; /* Current procedure entry */ - curr_fd = 0; /* Current file entry */ - curr_md = 0; /* Current module entry */ - - start_adr = 0; /* Current psymtab code range */ - end_adr = 0; - - start_sym = 0; /* Current psymtab symbol range */ - end_sym = 0; - - syms_in_pst = 0; /* Symbol count for psymtab */ - - /* Psts actually just have pointers into the objfile's - symbol table, not their own symbol tables. */ - global_syms = objfile->global_psymbols.list; - static_syms = objfile->static_psymbols.list; - - - /* First skip over pseudo-entries with address 0. These represent inlined - routines and abstract (uninstantiated) template routines. - FIXME: These should be read in and available -- even if we can't set - breakpoints, etc., there's some information that can be presented - to the user. pai/1997-10-08 */ - - while (VALID_CURR_PROC && (CURR_PROC_START == 0)) - curr_pd++; - - /* Loop over files, modules, and procedures in code address order. Each - time we enter an iteration of this loop, curr_pd points to the first - unprocessed procedure, curr_fd points to the first unprocessed file, and - curr_md to the first unprocessed module. Each iteration of this loop - updates these as required -- any or all of them may be bumpd up - each time around. When we exit this loop, we are done with all files - and modules in the tables -- there may still be some procedures, however. - - Note: This code used to loop only over module entries, under the assumption - that files can occur via inclusions and are thus unreliable, while a - compiled object always corresponds to a module. With CTTI in the HP aCC - compiler, it turns out that compiled objects may have only files and no - modules; so we have to loop over files and modules, creating psymtabs for - either as appropriate. Unfortunately there are some problems (notably: - 1. the lack of "SRC_FILE_END" entries in the LNTT, 2. the lack of pointers - to the ending symbol indices of a module or a file) which make it quite hard - to do this correctly. Currently it uses a bunch of heuristics to start and - end psymtabs; they seem to work well with most objects generated by aCC, but - who knows when that will change... */ - - while (VALID_CURR_FILE || VALID_CURR_MODULE) - { - - char *mod_name_string; - char *full_name_string; - - /* First check for modules like "version.c", which have no code - in them but still have qMD entries. They also have no qFD or - qPD entries. Their start address is -1 and their end address - is 0. */ - if (VALID_CURR_MODULE && (CURR_MODULE_START == -1) && (CURR_MODULE_END == 0)) - { - - mod_name_string = &vt_bits[(long) qMD[curr_md].sbMod]; - -#ifdef DUMPING - if (dumping) - printf ("Module with data only %s\n", mod_name_string); -#endif - - /* We'll skip the rest (it makes error-checking easier), and - just make an empty pst. Right now empty psts are not put - in the pst chain, so all this is for naught, but later it - might help. */ - - pst = hpread_start_psymtab (objfile, - section_offsets, /* ?? */ - mod_name_string, - CURR_MODULE_START, /* Low text address: bogus! */ - (CURR_MODULE_ISYM * sizeof (struct dntt_type_block)), - /* ldsymoff */ - global_syms, - static_syms); - - pst = hpread_end_psymtab (pst, - NULL, /* psymtab_include_list */ - 0, /* includes_used */ - end_sym * sizeof (struct dntt_type_block), - /* byte index in LNTT of end - = capping symbol offset - = LDSYMOFF of nextfile */ - 0, /* text high */ - NULL, /* dependency_list */ - 0); /* dependencies_used */ - - global_syms = objfile->global_psymbols.next; - static_syms = objfile->static_psymbols.next; - - curr_md++; - } - else if (VALID_CURR_MODULE && - ((CURR_MODULE_START == 0) || (CURR_MODULE_START == -1) || - (CURR_MODULE_END == 0) || (CURR_MODULE_END == -1))) - { - TELL_OBJFILE; - warning ("Module \"%s\" [0x%x] has non-standard addresses. It starts at 0x%x, ends at 0x%x, and will be skipped.", - mod_name_string, curr_md, start_adr, end_adr); - /* On to next module */ - curr_md++; - } - else - { - /* First check if we are looking at a file with code in it - that does not overlap the current module's code range */ - - if (VALID_CURR_FILE ? (VALID_CURR_MODULE ? (CURR_FILE_END < CURR_MODULE_START) : 1) : 0) - { - - /* Looking at file not corresponding to any module, - create a psymtab for it */ - full_name_string = &vt_bits[(long) qFD[curr_fd].sbFile]; - start_adr = CURR_FILE_START; - end_adr = CURR_FILE_END; - start_sym = CURR_FILE_ISYM; - - /* Check if there are any procedures not handled until now, that - begin before the start address of this file, and if so, adjust - this module's start address to include them. This handles routines that - are in between file or module ranges for some reason (probably - indicates a compiler bug */ - - if (CURR_PROC_START < start_adr) - { - TELL_OBJFILE; - warning ("Found procedure \"%s\" [0x%x] that is not in any file or module.", - &vt_bits[(long) qPD[curr_pd].sbProc], curr_pd); - start_adr = CURR_PROC_START; - if (CURR_PROC_ISYM < start_sym) - start_sym = CURR_PROC_ISYM; - } - - /* Sometimes (compiler bug -- COBOL) the module end address is higher - than the start address of the next module, so check for that and - adjust accordingly */ - - if (VALID_FILE (curr_fd + 1) && (FILE_START (curr_fd + 1) <= end_adr)) - { - TELL_OBJFILE; - warning ("File \"%s\" [0x%x] has ending address after starting address of next file; adjusting ending address down.", - full_name_string, curr_fd); - end_adr = FILE_START (curr_fd + 1) - 1; /* Is -4 (or -8 for 64-bit) better? */ - } - if (VALID_MODULE (curr_md) && (CURR_MODULE_START <= end_adr)) - { - TELL_OBJFILE; - warning ("File \"%s\" [0x%x] has ending address after starting address of next module; adjusting ending address down.", - full_name_string, curr_fd); - end_adr = CURR_MODULE_START - 1; /* Is -4 (or -8 for 64-bit) better? */ - } - - -#ifdef DUMPING - if (dumping) - { - printf ("Make new psymtab for file %s (%x to %x).\n", - full_name_string, start_adr, end_adr); - } -#endif - /* Create the basic psymtab, connecting it in the list - for this objfile and pointing its symbol entries - to the current end of the symbol areas in the objfile. - - The "ldsymoff" parameter is the byte offset in the LNTT - of the first symbol in this file. Some day we should - turn this into an index (fix in hp-symtab-read.c as well). - And it's not even the right byte offset, as we're using - the size of a union! FIXME! */ - pst = hpread_start_psymtab (objfile, - section_offsets, /* ?? */ - full_name_string, - start_adr, /* Low text address */ - (start_sym * sizeof (struct dntt_type_block)), - /* ldsymoff */ - global_syms, - static_syms); - - /* Set up to only enter each class referenced in this module once. */ - class_entered = malloc (B_BYTES (pxdb_header_p->cd_entries)); - B_CLRALL (class_entered, pxdb_header_p->cd_entries); - - /* Scan the procedure descriptors for procedures in the current - file, based on the starting addresses. */ - - syms_in_pst = scan_procs (&curr_pd, qPD, pxdb_header_p->pd_entries, - start_adr, end_adr, - pst, vt_bits, objfile, section_offsets); - - /* Get ending symbol offset */ - - end_sym = 0; - /* First check for starting index before previous psymtab */ - if (pst_syms_count && start_sym < pst_syms_array[pst_syms_count - 1].end) - { - end_sym = find_next_pst_start (start_sym); - } - /* Look for next start index of a file or module, or procedure */ - if (!end_sym) - { - int next_file_isym = find_next_file_isym (start_sym, qFD, curr_fd + 1, pxdb_header_p); - int next_module_isym = find_next_module_isym (start_sym, qMD, curr_md, pxdb_header_p); - int next_proc_isym = find_next_proc_isym (start_sym, qPD, curr_pd, pxdb_header_p); - - if (next_file_isym && next_module_isym) - { - /* pick lower of next file or module start index */ - end_sym = min (next_file_isym, next_module_isym); - } - else - { - /* one of them is zero, pick the other */ - end_sym = max (next_file_isym, next_module_isym); - } - - /* As a precaution, check next procedure index too */ - if (!end_sym) - end_sym = next_proc_isym; - else - end_sym = min (end_sym, next_proc_isym); - } - - /* Couldn't find procedure, file, or module, use globals as default */ - if (!end_sym) - end_sym = pxdb_header_p->globals; - -#ifdef DUMPING - if (dumping) - { - printf ("File psymtab indices: %x to %x\n", start_sym, end_sym); - } -#endif - - pst = hpread_end_psymtab (pst, - NULL, /* psymtab_include_list */ - 0, /* includes_used */ - end_sym * sizeof (struct dntt_type_block), - /* byte index in LNTT of end - = capping symbol offset - = LDSYMOFF of nextfile */ - end_adr, /* text high */ - NULL, /* dependency_list */ - 0); /* dependencies_used */ - - record_pst_syms (start_sym, end_sym); - - if (NULL == pst) - warning ("No symbols in psymtab for file \"%s\" [0x%x].", full_name_string, curr_fd); - -#ifdef DUMPING - if (dumping) - { - printf ("Made new psymtab for file %s (%x to %x), sym %x to %x.\n", - full_name_string, start_adr, end_adr, CURR_FILE_ISYM, end_sym); - } -#endif - /* Prepare for the next psymtab. */ - global_syms = objfile->global_psymbols.next; - static_syms = objfile->static_psymbols.next; - free (class_entered); - - curr_fd++; - } /* Psymtab for file */ - else - { - /* We have a module for which we create a psymtab */ - - mod_name_string = &vt_bits[(long) qMD[curr_md].sbMod]; - - /* We will include the code ranges of any files that happen to - overlap with this module */ - - /* So, first pick the lower of the file's and module's start addresses */ - start_adr = CURR_MODULE_START; - if (VALID_CURR_FILE) - { - if (CURR_FILE_START < CURR_MODULE_START) - { - TELL_OBJFILE; - warning ("File \"%s\" [0x%x] crosses beginning of module \"%s\".", - &vt_bits[(long) qFD[curr_fd].sbFile], - curr_fd, mod_name_string); - - start_adr = CURR_FILE_START; - } - } - - /* Also pick the lower of the file's and the module's start symbol indices */ - start_sym = CURR_MODULE_ISYM; - if (VALID_CURR_FILE && (CURR_FILE_ISYM < CURR_MODULE_ISYM)) - start_sym = CURR_FILE_ISYM; - - /* For the end address, we scan through the files till we find one - that overlaps the current module but ends beyond it; if no such file exists we - simply use the module's start address. - (Note, if file entries themselves overlap - we take the longest overlapping extension beyond the end of the module...) - We assume that modules never overlap. */ - - end_adr = CURR_MODULE_END; - - if (VALID_CURR_FILE) - { - while (VALID_CURR_FILE && (CURR_FILE_START < end_adr)) - { - -#ifdef DUMPING - if (dumping) - printf ("Maybe skipping file %s which overlaps with module %s\n", - &vt_bits[(long) qFD[curr_fd].sbFile], mod_name_string); -#endif - if (CURR_FILE_END > end_adr) - { - TELL_OBJFILE; - warning ("File \"%s\" [0x%x] crosses end of module \"%s\".", - &vt_bits[(long) qFD[curr_fd].sbFile], - curr_fd, mod_name_string); - end_adr = CURR_FILE_END; - } - curr_fd++; - } - curr_fd--; /* back up after going too far */ - } - - /* Sometimes (compiler bug -- COBOL) the module end address is higher - than the start address of the next module, so check for that and - adjust accordingly */ - - if (VALID_MODULE (curr_md + 1) && (MODULE_START (curr_md + 1) <= end_adr)) - { - TELL_OBJFILE; - warning ("Module \"%s\" [0x%x] has ending address after starting address of next module; adjusting ending address down.", - mod_name_string, curr_md); - end_adr = MODULE_START (curr_md + 1) - 1; /* Is -4 (or -8 for 64-bit) better? */ - } - if (VALID_FILE (curr_fd + 1) && (FILE_START (curr_fd + 1) <= end_adr)) - { - TELL_OBJFILE; - warning ("Module \"%s\" [0x%x] has ending address after starting address of next file; adjusting ending address down.", - mod_name_string, curr_md); - end_adr = FILE_START (curr_fd + 1) - 1; /* Is -4 (or -8 for 64-bit) better? */ - } - - /* Use one file to get the full name for the module. This - situation can arise if there is executable code in a #include - file. Each file with code in it gets a qFD. Files which don't - contribute code don't get a qFD, even if they include files - which do, e.g.: - - body.c: rtn.h: - int x; int main() { - #include "rtn.h" return x; - } - - There will a qFD for "rtn.h",and a qMD for "body.c", - but no qMD for "rtn.h" or qFD for "body.c"! - - We pick the name of the last file to overlap with this - module. C convention is to put include files first. In a - perfect world, we could check names and use the file whose full - path name ends with the module name. */ - - if (VALID_CURR_FILE) - full_name_string = &vt_bits[(long) qFD[curr_fd].sbFile]; - else - full_name_string = mod_name_string; - - /* Check if there are any procedures not handled until now, that - begin before the start address we have now, and if so, adjust - this psymtab's start address to include them. This handles routines that - are in between file or module ranges for some reason (probably - indicates a compiler bug */ - - if (CURR_PROC_START < start_adr) - { - TELL_OBJFILE; - warning ("Found procedure \"%s\" [0x%x] that is not in any file or module.", - &vt_bits[(long) qPD[curr_pd].sbProc], curr_pd); - start_adr = CURR_PROC_START; - if (CURR_PROC_ISYM < start_sym) - start_sym = CURR_PROC_ISYM; - } - -#ifdef DUMPING - if (dumping) - { - printf ("Make new psymtab for module %s (%x to %x), using file %s\n", - mod_name_string, start_adr, end_adr, full_name_string); - } -#endif - /* Create the basic psymtab, connecting it in the list - for this objfile and pointing its symbol entries - to the current end of the symbol areas in the objfile. - - The "ldsymoff" parameter is the byte offset in the LNTT - of the first symbol in this file. Some day we should - turn this into an index (fix in hp-symtab-read.c as well). - And it's not even the right byte offset, as we're using - the size of a union! FIXME! */ - pst = hpread_start_psymtab (objfile, - section_offsets, /* ?? */ - full_name_string, - start_adr, /* Low text address */ - (start_sym * sizeof (struct dntt_type_block)), - /* ldsymoff */ - global_syms, - static_syms); - - /* Set up to only enter each class referenced in this module once. */ - class_entered = malloc (B_BYTES (pxdb_header_p->cd_entries)); - B_CLRALL (class_entered, pxdb_header_p->cd_entries); - - /* Scan the procedure descriptors for procedures in the current - module, based on the starting addresses. */ - - syms_in_pst = scan_procs (&curr_pd, qPD, pxdb_header_p->pd_entries, - start_adr, end_adr, - pst, vt_bits, objfile, section_offsets); - - /* Get ending symbol offset */ - - end_sym = 0; - /* First check for starting index before previous psymtab */ - if (pst_syms_count && start_sym < pst_syms_array[pst_syms_count - 1].end) - { - end_sym = find_next_pst_start (start_sym); - } - /* Look for next start index of a file or module, or procedure */ - if (!end_sym) - { - int next_file_isym = find_next_file_isym (start_sym, qFD, curr_fd + 1, pxdb_header_p); - int next_module_isym = find_next_module_isym (start_sym, qMD, curr_md + 1, pxdb_header_p); - int next_proc_isym = find_next_proc_isym (start_sym, qPD, curr_pd, pxdb_header_p); - - if (next_file_isym && next_module_isym) - { - /* pick lower of next file or module start index */ - end_sym = min (next_file_isym, next_module_isym); - } - else - { - /* one of them is zero, pick the other */ - end_sym = max (next_file_isym, next_module_isym); - } - - /* As a precaution, check next procedure index too */ - if (!end_sym) - end_sym = next_proc_isym; - else - end_sym = min (end_sym, next_proc_isym); - } - - /* Couldn't find procedure, file, or module, use globals as default */ - if (!end_sym) - end_sym = pxdb_header_p->globals; - -#ifdef DUMPING - if (dumping) - { - printf ("Module psymtab indices: %x to %x\n", start_sym, end_sym); - } -#endif - - pst = hpread_end_psymtab (pst, - NULL, /* psymtab_include_list */ - 0, /* includes_used */ - end_sym * sizeof (struct dntt_type_block), - /* byte index in LNTT of end - = capping symbol offset - = LDSYMOFF of nextfile */ - end_adr, /* text high */ - NULL, /* dependency_list */ - 0); /* dependencies_used */ - - record_pst_syms (start_sym, end_sym); - - if (NULL == pst) - warning ("No symbols in psymtab for module \"%s\" [0x%x].", mod_name_string, curr_md); - -#ifdef DUMPING - if (dumping) - { - printf ("Made new psymtab for module %s (%x to %x), sym %x to %x.\n", - mod_name_string, start_adr, end_adr, CURR_MODULE_ISYM, end_sym); - } -#endif - - /* Prepare for the next psymtab. */ - global_syms = objfile->global_psymbols.next; - static_syms = objfile->static_psymbols.next; - free (class_entered); - - curr_md++; - curr_fd++; - } /* psymtab for module */ - } /* psymtab for non-bogus file or module */ - } /* End of while loop over all files & modules */ - - /* There may be some routines after all files and modules -- these will get - inserted in a separate new module of their own */ - if (VALID_CURR_PROC) - { - start_adr = CURR_PROC_START; - end_adr = qPD[pxdb_header_p->pd_entries - 1].adrEnd; - TELL_OBJFILE; - warning ("Found functions beyond end of all files and modules [0x%x].", curr_pd); -#ifdef DUMPING - if (dumping) - { - printf ("Orphan functions at end, PD %d and beyond (%x to %x)\n", - curr_pd, start_adr, end_adr); - } -#endif - pst = hpread_start_psymtab (objfile, - section_offsets, /* ?? */ - "orphans", - start_adr, /* Low text address */ - (CURR_PROC_ISYM * sizeof (struct dntt_type_block)), - /* ldsymoff */ - global_syms, - static_syms); - - scan_procs (&curr_pd, qPD, pxdb_header_p->pd_entries, - start_adr, end_adr, - pst, vt_bits, objfile, section_offsets); - - pst = hpread_end_psymtab (pst, - NULL, /* psymtab_include_list */ - 0, /* includes_used */ - pxdb_header_p->globals * sizeof (struct dntt_type_block), - /* byte index in LNTT of end - = capping symbol offset - = LDSYMOFF of nextfile */ - end_adr, /* text high */ - NULL, /* dependency_list */ - 0); /* dependencies_used */ - } - - -#ifdef NEVER_NEVER - /* Now build psts for non-module things (in the tail of - the LNTT, after the last END MODULE entry). - - If null psts were kept on the chain, this would be - a solution. FIXME */ - pst = hpread_start_psymtab (objfile, - section_offsets, - "globals", - 0, - (pxdb_header_p->globals - * sizeof (struct dntt_type_block)), - objfile->global_psymbols.next, - objfile->static_psymbols.next); - hpread_end_psymtab (pst, - NULL, 0, - (max_LNTT_sym_index * sizeof (struct dntt_type_block)), - 0, - NULL, 0); -#endif - - clear_pst_syms (); - - return 1; - -} /* End of hpread_quick_traverse. */ - - -/* Get appropriate header, based on pxdb type. - Return value: 1 if ok, 0 if not */ -int -hpread_get_header (objfile, pxdb_header_p) - struct objfile *objfile; - PXDB_header_ptr pxdb_header_p; -{ - asection *pinfo_section, *debug_section, *header_section; - -#ifdef DUMPING - /* Turn on for debugging information */ - static int dumping = 0; -#endif - - header_section = bfd_get_section_by_name (objfile->obfd, "$HEADER$"); - if (!header_section) - { - /* We don't have either PINFO or DEBUG sections. But - stuff like "libc.sl" has no debug info. There's no - need to warn the user of this, as it may be ok. The - caller will figure it out and issue any needed - messages. */ -#ifdef DUMPING - if (dumping) - printf ("==No debug info at all for %s.\n", objfile->name); -#endif - - return 0; - } - - /* We would like either a $DEBUG$ or $PINFO$ section. - Once we know which, we can understand the header - data (which we have defined to suit the more common - $DEBUG$ case). */ - debug_section = bfd_get_section_by_name (objfile->obfd, "$DEBUG$"); - pinfo_section = bfd_get_section_by_name (objfile->obfd, "$PINFO$"); - if (debug_section) - { - /* The expected case: normal pxdb header. */ - bfd_get_section_contents (objfile->obfd, header_section, - pxdb_header_p, 0, sizeof (PXDB_header)); - - if (!pxdb_header_p->pxdbed) - { - /* This shouldn't happen if we check in "symfile.c". */ - return 0; - } /* DEBUG section */ - } - - else if (pinfo_section) - { - /* The DOC case; we need to translate this into a - regular header. */ - DOC_info_PXDB_header doc_header; - -#ifdef DUMPING - if (dumping) - { - printf ("==OOps, PINFO, let's try to handle this, %s.\n", objfile->name); - } -#endif - - bfd_get_section_contents (objfile->obfd, - header_section, - &doc_header, 0, - sizeof (DOC_info_PXDB_header)); - - if (!doc_header.pxdbed) - { - /* This shouldn't happen if we check in "symfile.c". */ - warning ("File \"%s\" not processed by pxdb!", objfile->name); - return 0; - } - - /* Copy relevent fields to standard header passed in. */ - pxdb_header_p->pd_entries = doc_header.pd_entries; - pxdb_header_p->fd_entries = doc_header.fd_entries; - pxdb_header_p->md_entries = doc_header.md_entries; - pxdb_header_p->pxdbed = doc_header.pxdbed; - pxdb_header_p->bighdr = doc_header.bighdr; - pxdb_header_p->sa_header = doc_header.sa_header; - pxdb_header_p->inlined = doc_header.inlined; - pxdb_header_p->globals = doc_header.globals; - pxdb_header_p->time = doc_header.time; - pxdb_header_p->pg_entries = doc_header.pg_entries; - pxdb_header_p->functions = doc_header.functions; - pxdb_header_p->files = doc_header.files; - pxdb_header_p->cd_entries = doc_header.cd_entries; - pxdb_header_p->aa_entries = doc_header.aa_entries; - pxdb_header_p->oi_entries = doc_header.oi_entries; - pxdb_header_p->version = doc_header.version; - } /* PINFO section */ - - else - { -#ifdef DUMPING - if (dumping) - printf ("==No debug info at all for %s.\n", objfile->name); -#endif - - return 0; - - } - - return 1; -} /* End of hpread_get_header */ -#endif /* QUICK_LOOK_UP */ - - -/* Initialization for reading native HP C debug symbols from OBJFILE. - - Its only purpose in life is to set up the symbol reader's private - per-objfile data structures, and read in the raw contents of the debug - sections (attaching pointers to the debug info into the private data - structures). - - Since BFD doesn't know how to read debug symbols in a format-independent - way (and may never do so...), we have to do it ourselves. Note we may - be called on a file without native HP C debugging symbols. - - FIXME, there should be a cleaner peephole into the BFD environment - here. */ -void -hpread_symfile_init (objfile) - struct objfile *objfile; -{ - asection *vt_section, *slt_section, *lntt_section, *gntt_section; - - /* Allocate struct to keep track of the symfile */ - objfile->sym_private = (PTR) - xmmalloc (objfile->md, sizeof (struct hpread_symfile_info)); - memset (objfile->sym_private, 0, sizeof (struct hpread_symfile_info)); - - /* We haven't read in any types yet. */ - TYPE_VECTOR (objfile) = 0; - - /* Read in data from the $GNTT$ subspace. */ - gntt_section = bfd_get_section_by_name (objfile->obfd, "$GNTT$"); - if (!gntt_section) - return; - - GNTT (objfile) - = obstack_alloc (&objfile->symbol_obstack, - bfd_section_size (objfile->obfd, gntt_section)); - - bfd_get_section_contents (objfile->obfd, gntt_section, GNTT (objfile), - 0, bfd_section_size (objfile->obfd, gntt_section)); - - GNTT_SYMCOUNT (objfile) - = bfd_section_size (objfile->obfd, gntt_section) - / sizeof (struct dntt_type_block); - - /* Read in data from the $LNTT$ subspace. Also keep track of the number - of LNTT symbols. - - FIXME: this could be moved into the psymtab-to-symtab expansion - code, and save startup time. At the moment this data is - still used, though. We'd need a way to tell hp-symtab-read.c - whether or not to load the LNTT. */ - lntt_section = bfd_get_section_by_name (objfile->obfd, "$LNTT$"); - if (!lntt_section) - return; - - LNTT (objfile) - = obstack_alloc (&objfile->symbol_obstack, - bfd_section_size (objfile->obfd, lntt_section)); - - bfd_get_section_contents (objfile->obfd, lntt_section, LNTT (objfile), - 0, bfd_section_size (objfile->obfd, lntt_section)); - - LNTT_SYMCOUNT (objfile) - = bfd_section_size (objfile->obfd, lntt_section) - / sizeof (struct dntt_type_block); - - /* Read in data from the $SLT$ subspace. $SLT$ contains information - on source line numbers. */ - slt_section = bfd_get_section_by_name (objfile->obfd, "$SLT$"); - if (!slt_section) - return; - - SLT (objfile) = - obstack_alloc (&objfile->symbol_obstack, - bfd_section_size (objfile->obfd, slt_section)); - - bfd_get_section_contents (objfile->obfd, slt_section, SLT (objfile), - 0, bfd_section_size (objfile->obfd, slt_section)); - - /* Read in data from the $VT$ subspace. $VT$ contains things like - names and constants. Keep track of the number of symbols in the VT. */ - vt_section = bfd_get_section_by_name (objfile->obfd, "$VT$"); - if (!vt_section) - return; - - VT_SIZE (objfile) = bfd_section_size (objfile->obfd, vt_section); - - VT (objfile) = - (char *) obstack_alloc (&objfile->symbol_obstack, - VT_SIZE (objfile)); - - bfd_get_section_contents (objfile->obfd, vt_section, VT (objfile), - 0, VT_SIZE (objfile)); -} - -/* Scan and build partial symbols for a symbol file. - - The minimal symbol table (either SOM or HP a.out) has already been - read in; all we need to do is setup partial symbols based on the - native debugging information. - - Note that the minimal table is produced by the linker, and has - only global routines in it; the psymtab is based on compiler- - generated debug information and has non-global - routines in it as well as files and class information. - - We assume hpread_symfile_init has been called to initialize the - symbol reader's private data structures. - - SECTION_OFFSETS contains offsets relative to which the symbols in the - various sections are (depending where the sections were actually loaded). - MAINLINE is true if we are reading the main symbol table (as - opposed to a shared lib or dynamically loaded file). */ -void -hpread_build_psymtabs (objfile, section_offsets, mainline) - struct objfile *objfile; - struct section_offsets *section_offsets; - int mainline; -{ - -#ifdef DUMPING - /* Turn this on to get debugging output. */ - static int dumping = 0; -#endif - - char *namestring; - int past_first_source_file = 0; - struct cleanup *old_chain; - - int hp_symnum, symcount, i; - int scan_start = 0; - - union dnttentry *dn_bufp; - unsigned long valu; - char *p; - int texthigh = 0; - int have_name = 0; - - /* Current partial symtab */ - struct partial_symtab *pst; - - /* List of current psymtab's include files */ - char **psymtab_include_list; - int includes_allocated; - int includes_used; - - /* Index within current psymtab dependency list */ - struct partial_symtab **dependency_list; - int dependencies_used, dependencies_allocated; - - /* Just in case the stabs reader left turds lying around. */ - free_pending_blocks (); - make_cleanup ((make_cleanup_func) really_free_pendings, 0); - - pst = (struct partial_symtab *) 0; - - /* We shouldn't use alloca, instead use malloc/free. Doing so avoids - a number of problems with cross compilation and creating useless holes - in the stack when we have to allocate new entries. FIXME. */ - - includes_allocated = 30; - includes_used = 0; - psymtab_include_list = (char **) alloca (includes_allocated * - sizeof (char *)); - - dependencies_allocated = 30; - dependencies_used = 0; - dependency_list = - (struct partial_symtab **) alloca (dependencies_allocated * - sizeof (struct partial_symtab *)); - - old_chain = make_cleanup ((make_cleanup_func) free_objfile, objfile); - - last_source_file = 0; - -#ifdef QUICK_LOOK_UP - { - /* Begin code for new-style loading of quick look-up tables. */ - - /* elz: this checks whether the file has beeen processed by pxdb. - If not we would like to try to read the psymbols in - anyway, but it turns out to be not so easy. So this could - actually be commented out, but I leave it in, just in case - we decide to add support for non-pxdb-ed stuff in the future. */ - PXDB_header pxdb_header; - int found_modules_in_program; - - if (hpread_get_header (objfile, &pxdb_header)) - { - /* Build a minimal table. No types, no global variables, - no include files.... */ -#ifdef DUMPING - if (dumping) - printf ("\nNew method for %s\n", objfile->name); -#endif - - /* elz: quick_traverse returns true if it found - some modules in the main source file, other - than those in end.c - In C and C++, all the files have MODULES entries - in the LNTT, and the quick table traverse is all - based on finding these MODULES entries. Without - those it cannot work. - It happens that F77 programs don't have MODULES - so the quick traverse gets confused. F90 programs - have modules, and the quick method still works. - So, if modules (other than those in end.c) are - not found we give up on the quick table stuff, - and fall back on the slower method */ - found_modules_in_program = hpread_quick_traverse (objfile, - section_offsets, - GNTT (objfile), - VT (objfile), - &pxdb_header); - - discard_cleanups (old_chain); - - /* Set up to scan the global section of the LNTT. - - This field is not always correct: if there are - no globals, it will point to the last record in - the regular LNTT, which is usually an END MODULE. - - Since it might happen that there could be a file - with just one global record, there's no way to - tell other than by looking at the record, so that's - done below. */ - if (found_modules_in_program) - scan_start = pxdb_header.globals; - } -#ifdef DUMPING - else - { - if (dumping) - printf ("\nGoing on to old method for %s\n", objfile->name); - } -#endif - } -#endif /* QUICK_LOOK_UP */ - - /* Make two passes, one over the GNTT symbols, the other for the - LNTT symbols. - - JB comment: above isn't true--they only make one pass, over - the LNTT. */ - for (i = 0; i < 1; i++) - { - int within_function = 0; - - if (i) - symcount = GNTT_SYMCOUNT (objfile); - else - symcount = LNTT_SYMCOUNT (objfile); - - - for (hp_symnum = scan_start; hp_symnum < symcount; hp_symnum++) - { - QUIT; - if (i) - dn_bufp = hpread_get_gntt (hp_symnum, objfile); - else - dn_bufp = hpread_get_lntt (hp_symnum, objfile); - - if (dn_bufp->dblock.extension) - continue; - - /* Only handle things which are necessary for minimal symbols. - everything else is ignored. */ - switch (dn_bufp->dblock.kind) - { - case DNTT_TYPE_SRCFILE: - { -#ifdef QUICK_LOOK_UP - if (scan_start == hp_symnum - && symcount == hp_symnum + 1) - { - /* If there are NO globals in an executable, - PXDB's index to the globals will point to - the last record in the file, which - could be this record. (this happened for F77 libraries) - ignore it and be done! */ - continue; - } -#endif /* QUICK_LOOK_UP */ - - /* A source file of some kind. Note this may simply - be an included file. */ - SET_NAMESTRING (dn_bufp, &namestring, objfile); - - /* Check if this is the source file we are already working - with. */ - if (pst && !strcmp (namestring, pst->filename)) - continue; - - /* Check if this is an include file, if so check if we have - already seen it. Add it to the include list */ - p = strrchr (namestring, '.'); - if (!strcmp (p, ".h")) - { - int j, found; - - found = 0; - for (j = 0; j < includes_used; j++) - if (!strcmp (namestring, psymtab_include_list[j])) - { - found = 1; - break; - } - if (found) - continue; - - /* Add it to the list of includes seen so far and - allocate more include space if necessary. */ - psymtab_include_list[includes_used++] = namestring; - if (includes_used >= includes_allocated) - { - char **orig = psymtab_include_list; - - psymtab_include_list = (char **) - alloca ((includes_allocated *= 2) * - sizeof (char *)); - memcpy ((PTR) psymtab_include_list, (PTR) orig, - includes_used * sizeof (char *)); - } - continue; - } - - if (pst) - { - if (!have_name) - { - pst->filename = (char *) - obstack_alloc (&pst->objfile->psymbol_obstack, - strlen (namestring) + 1); - strcpy (pst->filename, namestring); - have_name = 1; - continue; - } - continue; - } - - /* This is a bonafide new source file. - End the current partial symtab and start a new one. */ - - if (pst && past_first_source_file) - { - hpread_end_psymtab (pst, psymtab_include_list, - includes_used, - (hp_symnum - * sizeof (struct dntt_type_block)), - texthigh, - dependency_list, dependencies_used); - pst = (struct partial_symtab *) 0; - includes_used = 0; - dependencies_used = 0; - } - else - past_first_source_file = 1; - - valu = hpread_get_textlow (i, hp_symnum, objfile, symcount); - valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); - pst = hpread_start_psymtab (objfile, section_offsets, - namestring, valu, - (hp_symnum - * sizeof (struct dntt_type_block)), - objfile->global_psymbols.next, - objfile->static_psymbols.next); - texthigh = valu; - have_name = 1; - continue; - } - - case DNTT_TYPE_MODULE: - /* A source file. It's still unclear to me what the - real difference between a DNTT_TYPE_SRCFILE and DNTT_TYPE_MODULE - is supposed to be. */ - - /* First end the previous psymtab */ - if (pst) - { - hpread_end_psymtab (pst, psymtab_include_list, includes_used, - ((hp_symnum - 1) - * sizeof (struct dntt_type_block)), - texthigh, - dependency_list, dependencies_used); - pst = (struct partial_symtab *) 0; - includes_used = 0; - dependencies_used = 0; - have_name = 0; - } - - /* Now begin a new module and a new psymtab for it */ - SET_NAMESTRING (dn_bufp, &namestring, objfile); - valu = hpread_get_textlow (i, hp_symnum, objfile, symcount); - valu += ANOFFSET (section_offsets, SECT_OFF_TEXT); - if (!pst) - { - pst = hpread_start_psymtab (objfile, section_offsets, - namestring, valu, - (hp_symnum - * sizeof (struct dntt_type_block)), - objfile->global_psymbols.next, - objfile->static_psymbols.next); - texthigh = valu; - have_name = 0; - } - continue; - - case DNTT_TYPE_FUNCTION: - case DNTT_TYPE_ENTRY: - /* The beginning of a function. DNTT_TYPE_ENTRY may also denote - a secondary entry point. */ - valu = dn_bufp->dfunc.hiaddr + ANOFFSET (section_offsets, - SECT_OFF_TEXT); - if (valu > texthigh) - texthigh = valu; - valu = dn_bufp->dfunc.lowaddr + - ANOFFSET (section_offsets, SECT_OFF_TEXT); - SET_NAMESTRING (dn_bufp, &namestring, objfile); - if (dn_bufp->dfunc.global) - add_psymbol_to_list (namestring, strlen (namestring), - VAR_NAMESPACE, LOC_BLOCK, - &objfile->global_psymbols, valu, - 0, language_unknown, objfile); - else - add_psymbol_to_list (namestring, strlen (namestring), - VAR_NAMESPACE, LOC_BLOCK, - &objfile->static_psymbols, valu, - 0, language_unknown, objfile); - within_function = 1; - continue; - - case DNTT_TYPE_DOC_FUNCTION: - valu = dn_bufp->ddocfunc.hiaddr + ANOFFSET (section_offsets, - SECT_OFF_TEXT); - if (valu > texthigh) - texthigh = valu; - valu = dn_bufp->ddocfunc.lowaddr + - ANOFFSET (section_offsets, SECT_OFF_TEXT); - SET_NAMESTRING (dn_bufp, &namestring, objfile); - if (dn_bufp->ddocfunc.global) - add_psymbol_to_list (namestring, strlen (namestring), - VAR_NAMESPACE, LOC_BLOCK, - &objfile->global_psymbols, valu, - 0, language_unknown, objfile); - else - add_psymbol_to_list (namestring, strlen (namestring), - VAR_NAMESPACE, LOC_BLOCK, - &objfile->static_psymbols, valu, - 0, language_unknown, objfile); - within_function = 1; - continue; - - case DNTT_TYPE_BEGIN: - case DNTT_TYPE_END: - /* We don't check MODULE end here, because there can be - symbols beyond the module end which properly belong to the - current psymtab -- so we wait till the next MODULE start */ - - -#ifdef QUICK_LOOK_UP - if (scan_start == hp_symnum - && symcount == hp_symnum + 1) - { - /* If there are NO globals in an executable, - PXDB's index to the globals will point to - the last record in the file, which is - probably an END MODULE, i.e. this record. - ignore it and be done! */ - continue; - } -#endif /* QUICK_LOOK_UP */ - - /* Scope block begin/end. We only care about function - and file blocks right now. */ - - if ((dn_bufp->dend.endkind == DNTT_TYPE_FUNCTION) || - (dn_bufp->dend.endkind == DNTT_TYPE_DOC_FUNCTION)) - within_function = 0; - continue; - - case DNTT_TYPE_SVAR: - case DNTT_TYPE_DVAR: - case DNTT_TYPE_TYPEDEF: - case DNTT_TYPE_TAGDEF: - { - /* Variables, typedefs an the like. */ - enum address_class storage; - namespace_enum namespace; - - /* Don't add locals to the partial symbol table. */ - if (within_function - && (dn_bufp->dblock.kind == DNTT_TYPE_SVAR - || dn_bufp->dblock.kind == DNTT_TYPE_DVAR)) - continue; - - /* TAGDEFs go into the structure namespace. */ - if (dn_bufp->dblock.kind == DNTT_TYPE_TAGDEF) - namespace = STRUCT_NAMESPACE; - else - namespace = VAR_NAMESPACE; - - /* What kind of "storage" does this use? */ - if (dn_bufp->dblock.kind == DNTT_TYPE_SVAR) - storage = LOC_STATIC; - else if (dn_bufp->dblock.kind == DNTT_TYPE_DVAR - && dn_bufp->ddvar.regvar) - storage = LOC_REGISTER; - else if (dn_bufp->dblock.kind == DNTT_TYPE_DVAR) - storage = LOC_LOCAL; - else - storage = LOC_UNDEF; - - SET_NAMESTRING (dn_bufp, &namestring, objfile); - if (!pst) - { - pst = hpread_start_psymtab (objfile, section_offsets, - "globals", 0, - (hp_symnum - * sizeof (struct dntt_type_block)), - objfile->global_psymbols.next, - objfile->static_psymbols.next); - } - - /* Compute address of the data symbol */ - valu = dn_bufp->dsvar.location; - /* Relocate in case it's in a shared library */ - if (storage == LOC_STATIC) - valu += ANOFFSET (section_offsets, SECT_OFF_DATA); - - /* Luckily, dvar, svar, typedef, and tagdef all - have their "global" bit in the same place, so it works - (though it's bad programming practice) to reference - "dsvar.global" even though we may be looking at - any of the above four types. */ - if (dn_bufp->dsvar.global) - { - add_psymbol_to_list (namestring, strlen (namestring), - namespace, storage, - &objfile->global_psymbols, - valu, - 0, language_unknown, objfile); - } - else - { - add_psymbol_to_list (namestring, strlen (namestring), - namespace, storage, - &objfile->static_psymbols, - valu, - 0, language_unknown, objfile); - } - - /* For TAGDEF's, the above code added the tagname to the - struct namespace. This will cause tag "t" to be found - on a reference of the form "(struct t) x". But for - C++ classes, "t" will also be a typename, which we - want to find on a reference of the form "ptype t". - Therefore, we also add "t" to the var namespace. - Do the same for enum's due to the way aCC generates - debug info for these (see more extended comment - in hp-symtab-read.c). - We do the same for templates, so that "ptype t" - where "t" is a template also works. */ - if (dn_bufp->dblock.kind == DNTT_TYPE_TAGDEF && - dn_bufp->dtype.type.dnttp.index < LNTT_SYMCOUNT (objfile)) - { - int global = dn_bufp->dtag.global; - /* Look ahead to see if it's a C++ class */ - dn_bufp = hpread_get_lntt (dn_bufp->dtype.type.dnttp.index, objfile); - if (dn_bufp->dblock.kind == DNTT_TYPE_CLASS || - dn_bufp->dblock.kind == DNTT_TYPE_ENUM || - dn_bufp->dblock.kind == DNTT_TYPE_TEMPLATE) - { - if (global) - { - add_psymbol_to_list (namestring, strlen (namestring), - VAR_NAMESPACE, storage, - &objfile->global_psymbols, - dn_bufp->dsvar.location, - 0, language_unknown, objfile); - } - else - { - add_psymbol_to_list (namestring, strlen (namestring), - VAR_NAMESPACE, storage, - &objfile->static_psymbols, - dn_bufp->dsvar.location, - 0, language_unknown, objfile); - } - } - } - } - continue; - - case DNTT_TYPE_MEMENUM: - case DNTT_TYPE_CONST: - /* Constants and members of enumerated types. */ - SET_NAMESTRING (dn_bufp, &namestring, objfile); - if (!pst) - { - pst = hpread_start_psymtab (objfile, section_offsets, - "globals", 0, - (hp_symnum - * sizeof (struct dntt_type_block)), - objfile->global_psymbols.next, - objfile->static_psymbols.next); - } - if (dn_bufp->dconst.global) - add_psymbol_to_list (namestring, strlen (namestring), - VAR_NAMESPACE, LOC_CONST, - &objfile->global_psymbols, 0, - 0, language_unknown, objfile); - else - add_psymbol_to_list (namestring, strlen (namestring), - VAR_NAMESPACE, LOC_CONST, - &objfile->static_psymbols, 0, - 0, language_unknown, objfile); - continue; - default: - continue; - } - } - } - - /* End any pending partial symbol table. */ - if (pst) - { - hpread_end_psymtab (pst, psymtab_include_list, includes_used, - hp_symnum * sizeof (struct dntt_type_block), - 0, dependency_list, dependencies_used); - } - - discard_cleanups (old_chain); -} - -/* 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. */ - -void -hpread_symfile_finish (objfile) - struct objfile *objfile; -{ - if (objfile->sym_private != NULL) - { - mfree (objfile->md, objfile->sym_private); - } -} - - -/* The remaining functions are all for internal use only. */ - -/* Various small functions to get entries in the debug symbol sections. */ - -union dnttentry * -hpread_get_lntt (index, objfile) - int index; - struct objfile *objfile; -{ - return (union dnttentry *) - &(LNTT (objfile)[(index * sizeof (struct dntt_type_block))]); -} - -static union dnttentry * -hpread_get_gntt (index, objfile) - int index; - struct objfile *objfile; -{ - return (union dnttentry *) - &(GNTT (objfile)[(index * sizeof (struct dntt_type_block))]); -} - -union sltentry * -hpread_get_slt (index, objfile) - int index; - struct objfile *objfile; -{ - return (union sltentry *) &(SLT (objfile)[index * sizeof (union sltentry)]); -} - -/* Get the low address associated with some symbol (typically the start - of a particular source file or module). Since that information is not - stored as part of the DNTT_TYPE_MODULE or DNTT_TYPE_SRCFILE symbol we must infer it from - the existance of DNTT_TYPE_FUNCTION symbols. */ - -static unsigned long -hpread_get_textlow (global, index, objfile, symcount) - int global; - int index; - struct objfile *objfile; - int symcount; -{ - union dnttentry *dn_bufp; - struct minimal_symbol *msymbol; - - /* Look for a DNTT_TYPE_FUNCTION symbol. */ - if (index < symcount) /* symcount is the number of symbols in */ - { /* the dbinfo, LNTT table */ - do - { - if (global) - dn_bufp = hpread_get_gntt (index++, objfile); - else - dn_bufp = hpread_get_lntt (index++, objfile); - } - while (dn_bufp->dblock.kind != DNTT_TYPE_FUNCTION - && dn_bufp->dblock.kind != DNTT_TYPE_DOC_FUNCTION - && dn_bufp->dblock.kind != DNTT_TYPE_END - && index < symcount); - } - - /* Avoid going past a DNTT_TYPE_END when looking for a DNTT_TYPE_FUNCTION. This - might happen when a sourcefile has no functions. */ - if (dn_bufp->dblock.kind == DNTT_TYPE_END) - return 0; - - /* Avoid going past the end of the LNTT file */ - if (index == symcount) - return 0; - - /* The minimal symbols are typically more accurate for some reason. */ - if (dn_bufp->dblock.kind == DNTT_TYPE_FUNCTION) - msymbol = lookup_minimal_symbol (dn_bufp->dfunc.name + VT (objfile), NULL, - objfile); - else /* must be a DNTT_TYPE_DOC_FUNCTION */ - msymbol = lookup_minimal_symbol (dn_bufp->ddocfunc.name + VT (objfile), NULL, - objfile); - - if (msymbol) - return SYMBOL_VALUE_ADDRESS (msymbol); - else - return dn_bufp->dfunc.lowaddr; -} - -/* Allocate and partially fill a partial symtab. It will be - completely filled at the end of the symbol list. - - SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR - is the address relative to which its symbols are (incremental) or 0 - (normal). */ - -static struct partial_symtab * -hpread_start_psymtab (objfile, section_offsets, - filename, textlow, ldsymoff, global_syms, static_syms) - struct objfile *objfile; - struct section_offsets *section_offsets; - char *filename; - CORE_ADDR textlow; - int ldsymoff; - struct partial_symbol **global_syms; - struct partial_symbol **static_syms; -{ - int offset = ANOFFSET (section_offsets, SECT_OFF_TEXT); - extern void hpread_psymtab_to_symtab (); - struct partial_symtab *result = - start_psymtab_common (objfile, section_offsets, - filename, textlow, global_syms, static_syms); - - result->textlow += offset; - result->read_symtab_private = (char *) - obstack_alloc (&objfile->psymbol_obstack, sizeof (struct symloc)); - LDSYMOFF (result) = ldsymoff; - result->read_symtab = hpread_psymtab_to_symtab; - - return result; -} - - -/* Close off the current usage of PST. - Returns PST or NULL if the partial symtab was empty and thrown away. - - capping_symbol_offset --Byte index in LNTT or GNTT of the - last symbol processed during the build - of the previous pst. - - FIXME: List variables and peculiarities of same. */ - -static struct partial_symtab * -hpread_end_psymtab (pst, include_list, num_includes, capping_symbol_offset, - capping_text, dependency_list, number_dependencies) - struct partial_symtab *pst; - char **include_list; - int num_includes; - int capping_symbol_offset; - CORE_ADDR capping_text; - struct partial_symtab **dependency_list; - int number_dependencies; -{ - int i; - struct objfile *objfile = pst->objfile; - int offset = ANOFFSET (pst->section_offsets, SECT_OFF_TEXT); - -#ifdef DUMPING - /* Turn on to see what kind of a psymtab we've built. */ - static int dumping = 0; -#endif - - if (capping_symbol_offset != -1) - LDSYMLEN (pst) = capping_symbol_offset - LDSYMOFF (pst); - else - LDSYMLEN (pst) = 0; - pst->texthigh = capping_text + offset; - - pst->n_global_syms = - objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset); - pst->n_static_syms = - objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset); - -#ifdef DUMPING - if (dumping) - { - printf ("\nPst %s, LDSYMOFF %x (%x), LDSYMLEN %x (%x), globals %d, statics %d\n", - pst->filename, - LDSYMOFF (pst), - LDSYMOFF (pst) / sizeof (struct dntt_type_block), - LDSYMLEN (pst), - LDSYMLEN (pst) / sizeof (struct dntt_type_block), - pst->n_global_syms, pst->n_static_syms); - } -#endif - - pst->number_of_dependencies = number_dependencies; - if (number_dependencies) - { - pst->dependencies = (struct partial_symtab **) - obstack_alloc (&objfile->psymbol_obstack, - number_dependencies * sizeof (struct partial_symtab *)); - memcpy (pst->dependencies, dependency_list, - number_dependencies * sizeof (struct partial_symtab *)); - } - else - pst->dependencies = 0; - - for (i = 0; i < num_includes; i++) - { - struct partial_symtab *subpst = - allocate_psymtab (include_list[i], objfile); - - subpst->section_offsets = pst->section_offsets; - subpst->read_symtab_private = - (char *) obstack_alloc (&objfile->psymbol_obstack, - sizeof (struct symloc)); - LDSYMOFF (subpst) = - LDSYMLEN (subpst) = - subpst->textlow = - subpst->texthigh = 0; - - /* We could save slight bits of space by only making one of these, - shared by the entire set of include files. FIXME-someday. */ - subpst->dependencies = (struct partial_symtab **) - obstack_alloc (&objfile->psymbol_obstack, - sizeof (struct partial_symtab *)); - subpst->dependencies[0] = pst; - subpst->number_of_dependencies = 1; - - subpst->globals_offset = - subpst->n_global_syms = - subpst->statics_offset = - subpst->n_static_syms = 0; - - subpst->readin = 0; - subpst->symtab = 0; - subpst->read_symtab = pst->read_symtab; - } - - sort_pst_symbols (pst); - - /* If there is already a psymtab or symtab for a file of this name, remove it. - (If there is a symtab, more drastic things also happen.) - This happens in VxWorks. */ - free_named_symtabs (pst->filename); - - if (num_includes == 0 - && number_dependencies == 0 - && pst->n_global_syms == 0 - && pst->n_static_syms == 0) - { - /* Throw away this psymtab, it's empty. We can't deallocate it, since - it is on the obstack, but we can forget to chain it on the list. - Empty psymtabs happen as a result of header files which don't have - any symbols in them. There can be a lot of them. But this check - is wrong, in that a psymtab with N_SLINE entries but nothing else - is not empty, but we don't realize that. Fixing that without slowing - things down might be tricky. - It's also wrong if we're using the quick look-up tables, as - we can get empty psymtabs from modules with no routines in - them. */ - - discard_psymtab (pst); - - /* Indicate that psymtab was thrown away. */ - pst = (struct partial_symtab *) NULL; - - } - return pst; -} - - -/* End of hp-psymtab-read.c */ - -/* Set indentation to 4 spaces for Emacs; this file is - mostly non-GNU-ish in its style :-( */ -#if 0 -***Local Variables: -***c - basic - offset:4 -*** End: -#endif - - |