Changes to build misc function vector entries from canonical bfd symbol
table entries.
This commit is contained in:
Fred Fish
parent
811b9ab218
commit
a7446af61b
3 changed files with 121 additions and 17 deletions
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@ -1,3 +1,22 @@
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Thu Nov 14 19:27:30 1991 Fred Fish (fnf at cygnus.com)
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* dwarfread.c: Add misc function type parameter to internal
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record_misc_function(). Remove calls to init_misc_bunches()
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and condense_misc_bunches(), these are now done in elfread.c.
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* elfread.c: Add support for reading bfd canonical symbol tables
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and generating misc function vector entries for global and
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absolute symbols. Do calls to init_misc_bunches() and
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condense_misc_bunches() where they will enclose all calls to
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record_misc_function(), including those in dwarfread.c.
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Thu Nov 14 17:02:11 1991 Roland H. Pesch (pesch at cygnus.com)
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* doc/Makefile.in: new targets gdb.me, gdb.ms, gdb.mm
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(roffable documentation).
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* doc/gdb.texinfo: embedded hints (as comments) for better
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texi2roff conversion.
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Thu Nov 14 13:18:25 1991 John Gilmore (gnu at cygnus.com)
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* m88k-tdep.c (examine_prologue): Deal with OR instructions
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@ -448,7 +448,8 @@ static int
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EXFUN(locval, (char *loc));
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static void
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EXFUN(record_misc_function, (char *name AND CORE_ADDR address));
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EXFUN(record_misc_function, (char *name AND CORE_ADDR address AND
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enum misc_function_type));
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static int
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EXFUN(compare_psymbols,
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@ -522,9 +523,6 @@ DEFUN(dwarf_build_psymtabs,
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init_psymbol_list (1024);
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}
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init_misc_bunches ();
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make_cleanup (discard_misc_bunches, 0);
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/* Follow the compilation unit sibling chain, building a partial symbol
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table entry for each one. Save enough information about each compilation
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unit to locate the full DWARF information later. */
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@ -532,10 +530,6 @@ DEFUN(dwarf_build_psymtabs,
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scan_compilation_units (filename, addr, dbbase, dbbase + dbsize,
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dbfoff, lnoffset, objfile);
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/* Go over the miscellaneous functions and install them in the miscellaneous
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function vector. */
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condense_misc_bunches (!mainline);
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do_cleanups (back_to);
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}
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@ -548,7 +542,8 @@ LOCAL FUNCTION
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SYNOPSIS
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static void record_misc_function (char *name, CORE_ADDR address)
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static void record_misc_function (char *name, CORE_ADDR address,
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enum misc_function_type mf_type)
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DESCRIPTION
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@ -557,17 +552,14 @@ DESCRIPTION
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symbol, records this information for later use in building the
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miscellaneous function vector.
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NOTES
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FIXME: For now we just use mf_text as the type. This should be
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fixed.
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*/
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static void
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DEFUN(record_misc_function, (name, address), char *name AND CORE_ADDR address)
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DEFUN(record_misc_function, (name, address, mf_type),
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char *name AND CORE_ADDR address AND enum misc_function_type mf_type)
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{
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prim_record_misc_function (obsavestring (name, strlen (name)), address,
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mf_text);
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mf_type);
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}
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/*
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@ -2615,11 +2607,13 @@ DEFUN(add_partial_symbol, (dip), struct dieinfo *dip)
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switch (dip -> dietag)
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{
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case TAG_global_subroutine:
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record_misc_function (dip -> at_name, dip -> at_low_pc);
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record_misc_function (dip -> at_name, dip -> at_low_pc, mf_text);
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add_psymbol_to_list (&global_psymbols, dip -> at_name, VAR_NAMESPACE,
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LOC_BLOCK, dip -> at_low_pc);
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break;
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case TAG_global_variable:
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record_misc_function (dip -> at_name, locval (dip -> at_location),
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mf_data);
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add_psymbol_to_list (&global_psymbols, dip -> at_name, VAR_NAMESPACE,
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LOC_STATIC, 0);
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break;
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@ -94,6 +94,71 @@ DEFUN(elf_locate_sections, (abfd, sectp, ei),
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}
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}
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/*
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LOCAL FUNCTION
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record_misc_function -- add entry to miscellaneous function vector
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SYNOPSIS
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static void record_misc_function (char *name, CORE_ADDR address)
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DESCRIPTION
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Given a pointer to the name of a symbol that should be added to the
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miscellaneous function vector, and the address associated with that
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symbol, records this information for later use in building the
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miscellaneous function vector.
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NOTES
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FIXME: For now we just use mf_unknown as the type. This should be
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fixed.
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*/
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static void
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DEFUN(record_misc_function, (name, address), char *name AND CORE_ADDR address)
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{
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prim_record_misc_function (obsavestring (name, strlen (name)), address,
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mf_unknown);
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}
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static void
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DEFUN (elf_symtab_read, (abfd, addr),
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bfd *abfd AND
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CORE_ADDR addr)
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{
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unsigned int storage_needed;
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asymbol *sym;
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asymbol **symbol_table;
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unsigned int number_of_symbols;
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unsigned int i;
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struct cleanup *back_to;
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storage_needed = get_symtab_upper_bound (abfd);
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if (storage_needed > 0)
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{
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symbol_table = (asymbol **) bfd_xmalloc (storage_needed);
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back_to = make_cleanup (free, symbol_table);
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number_of_symbols = bfd_canonicalize_symtab (abfd, symbol_table);
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for (i = 0; i < number_of_symbols; i++)
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{
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sym = *symbol_table++;
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/* Select global symbols that are defined in a specific section
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or are absolute. */
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if (sym -> flags & BSF_GLOBAL
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&& ((sym -> section != NULL) || (sym -> flags & BSF_ABSOLUTE)))
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{
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record_misc_function ((char *) sym -> name, sym -> value);
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}
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}
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do_cleanups (back_to);
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}
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}
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/* Scan and build partial symbols for a symbol file.
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We have been initialized by a call to elf_symfile_init, which
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currently does nothing.
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@ -111,7 +176,14 @@ DEFUN(elf_locate_sections, (abfd, sectp, ei),
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file, the corresponding partial symbol table is mutated into a full
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fledged symbol table by going back and reading the symbols
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for real. The function dwarf_psymtab_to_symtab() is the function that
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does this for DWARF symbols. */
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does this for DWARF symbols.
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Note that ELF files have a "minimal" symbol table, which looks a lot
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like a COFF symbol table, but has only the minimal information necessary
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for linking. We process this also, and just use the information to
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add to the misc function vector. This gives us some minimal debugging
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capability even for files compiled without -g.
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*/
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static void
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DEFUN(elf_symfile_read, (sf, addr, mainline),
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@ -121,7 +193,19 @@ DEFUN(elf_symfile_read, (sf, addr, mainline),
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{
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bfd *abfd = sf->objfile->obfd;
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struct elfinfo ei;
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struct cleanup *back_to;
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init_misc_bunches ();
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back_to = make_cleanup (discard_misc_bunches, 0);
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/* Process the normal ELF symbol table first. */
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elf_symtab_read (abfd, addr);
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/* Now process the DWARF debugging information, which is contained in
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special ELF sections. We first have to find them... */
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(void) memset ((char *) &ei, 0, sizeof (ei));
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bfd_map_over_sections (abfd, elf_locate_sections, &ei);
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if (ei.dboffset && ei.lnoffset)
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{
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@ -132,12 +216,19 @@ DEFUN(elf_symfile_read, (sf, addr, mainline),
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ei.dboffset, ei.dbsize,
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ei.lnoffset, ei.lnsize, sf->objfile);
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}
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if (!partial_symtab_list)
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{
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wrap_here ("");
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printf_filtered ("(no debugging symbols found)...");
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wrap_here ("");
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}
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/* Go over the miscellaneous functions and install them in the
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miscellaneous function vector. */
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condense_misc_bunches (!mainline);
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do_cleanups (back_to);
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}
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/* Initialize anything that needs initializing when a completely new symbol
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