| /* 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 *, 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 *, 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> |
| |
| /* 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_FORTRAN) |
| 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) |
| 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 */ |
| { |
| 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 (objfile->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 (objfile->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, gntt_bits, vt_bits, pxdb_header_p) |
| struct objfile *objfile; /* The object file descriptor */ |
| 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, |
| 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, |
| 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); |
| |
| /* 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, |
| 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); |
| |
| /* 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, |
| "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); |
| |
| 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, |
| "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. |
| |
| 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, mainline) |
| struct objfile *objfile; |
| 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 (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, |
| 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 (objfile->section_offsets, SECT_OFF_TEXT); |
| pst = hpread_start_psymtab (objfile, |
| 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 (objfile->section_offsets, SECT_OFF_TEXT); |
| if (!pst) |
| { |
| pst = hpread_start_psymtab (objfile, |
| 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 (objfile->section_offsets, |
| SECT_OFF_TEXT); |
| if (valu > texthigh) |
| texthigh = valu; |
| valu = dn_bufp->dfunc.lowaddr + |
| ANOFFSET (objfile->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 (objfile->section_offsets, |
| SECT_OFF_TEXT); |
| if (valu > texthigh) |
| texthigh = valu; |
| valu = dn_bufp->ddocfunc.lowaddr + |
| ANOFFSET (objfile->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, |
| "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 (objfile->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, |
| "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, |
| filename, textlow, ldsymoff, global_syms, static_syms) |
| struct objfile *objfile; |
| char *filename; |
| CORE_ADDR textlow; |
| int ldsymoff; |
| struct partial_symbol **global_syms; |
| struct partial_symbol **static_syms; |
| { |
| int offset = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT); |
| extern void hpread_psymtab_to_symtab (); |
| struct partial_symtab *result = |
| start_psymtab_common (objfile, 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 |