changelog-9091

早期freebsd实现

	* dwarfread.c:  Recognize obsolete form of AT_element_list
	attribute still used by at least one AT&T compiler, and possibly
	more.

Tue Nov 19 07:53:55 1991  Fred Fish  (fnf at cygnus.com)

	* dwarfread.c (enum_type, struct_type):  Ignore names invented by
	helpful compilers for anonymous structs, unions, and enums.

	* c-exp.y, m2-exp.y:  Add defines for yymaxdepth, yy_yys, and
	yy_yyv, so multiple parsers produced by SVR4 versions of yacc
	can coexist in the same executable without collision.

	* symtab.h:  Add declaration for lookup_template_type() to kill
	compiler warnings about conversions from int to pointer.

Mon Nov 18 17:45:18 1991  Fred Fish  (fnf at cygnus.com)

	* procfs.c:  Move inclusion of defs.h to before param.h, as in
	all the other source files that include both.  This is required
	to supply some typedefs that are used in files included by param.h.

	* m68k-tdep.c (m68k_skip_prologue):  Add generic m68k support for
	skipping function prologues, ala the other cpu families (i386,
	mips, m88k, etc).  Add the ability to skip movm and fmovm
	instructions in the prologues.  Still needs support for profile
	(-p compiled) prologue sequences (FIXME).

	* tm-68k.h:  Change SKIP_PROLOGUE macro to use the new generic
	m68k prologue skipping function by default.

	* tm-altos.h, tm-isi.h:  Continue to use the old definition of
	SKIP_PROLOGUE.

Mon Nov 18 15:12:45 1991  John Gilmore  (gnu at cygnus.com)

	* Makefile.in:  Remove tdesc stuff, and extra blanks before colons.
	* blockframe.c:  Remove tdesc-related code.  Default
	FRAME_CHAIN_COMBINE.
	* infrun.c:  Remove tdesc-related code.
	* m88k-tdep.c (frame_chain_combine, init_frame_pc):  Remove copies
	of defaultable things.
	* tm-m88k.h:  New file, common to all Moto 88k target configs.
	Derived from tm-delta88.h.
	* tm-delta88.h:  Use it.
	* xm-m88k.h:  Common file for 88K hosts.  Remove obsolete stuff.
	* xm-delta88.h:  Use it.
	* tm-*.h:  Remove FRAME_CHAIN_COMBINE macros, since all are
	default.
	* coffread.c:  Remove tdesc stuff.
	* tconfig/delta88, tconfig/m88k:  Remove tdesc stuff.
	* xconfig/m88k:  Rename tm-88k.h to tm-m88k.h.

Mon Nov 18 13:51:37 1991  Per Bothner  (bothner at cygnus.com)

	* source.c (open_source_file):  If openp fails, try again
	using just the base (non-directory) part of the filename.
	This solves various annoying problems, such as when the
	source was compiled with an absolute pathname - and the
	source files have moved.  Or if the source was compiled
	using a relative pathname, it can be more convenient
	to just specific the source directory to the dir command.

Mon Nov 18 00:04:41 1991  Fred Fish  (fnf at cygnus.com)

	* cplus-dem.c (munge_function_name):  Add missing third arg to
	instance of call to do_type().

	* dwarfread.c:  Changes to match new dwarf.h.  Remove 
	AT_deriv_list, AT_loclist, AT_incomplete, AT_const_data,
	and AT_is_external.

Sun Nov 17 16:20:53 1991  Michael Tiemann  (tiemann at rtl.cygnus.com)

	* symtab.h (struct type): Moved C++-specific fields into new type
	`struct cplus_struct_type'.  Now takes 10% less memory.  Many
	macros changed.
	* symtab.c (init_type): Don't set fields belonging to
	TYPE_CPLUS_SPECIFIC unless TYPE is TYPE_CODE_STRUCT.
	* buildsym.c (read_type): Allocate TYPE_CPLUS_SPECIFIC for
	TYPE_CODE_STRUCT.
	(read_struct_type): Ditto.  Also, add comments about how we can
	deduce TYPE_VPTR_FIELDNO from inheritance info and fieldname info.
	* coffread.c (decode_base_type): Allocate TYPE_CPLUS_SPECIFIC for
	TYPE_CODE_STRUCT.
	(read_struct_type): Ditto.
	* dwarfread.c (struct_type): Ditto.

	* symtab.c (read_range_type): Don't set TYPE_MAIN_VARIANT.
	(lookup_pointer_type): Don't use or set TYPE_MAIN_VARIANT.
	(lookup_reference_type): Ditto.

	* cplus-dem.c: Many changes made to handle decoding of
	ANSI-mangled names.
	* symtab.c (gdb_mangle_name): Mangle/demangle ANSI-mangled names
	as well.

Fri Nov 15 17:57:59 1991  Stu Grossman  (grossman at cygnus.com)

	* mipsread.c (parse_partial_symbols):  patch to keep DEC C
	compiler from making gdb bomb out.  Thanks to Ed Santiago!

Thu Nov 14 19:27:30 1991  Fred Fish  (fnf at cygnus.com)

	* symfile.c:  Add function compact_misc_function_vector() to
	remove duplicate misc function vector entries.  See comments
	in source for why this is necessary/desirable.

	* dwarfread.c:  Add misc function type parameter to internal
	record_misc_function().  Remove calls to init_misc_bunches()
	and condense_misc_bunches(), these are now done in elfread.c.

	* elfread.c:  Add support for reading bfd canonical symbol tables
	and generating misc function vector entries for global and
	absolute symbols.  Do calls to init_misc_bunches() and
	condense_misc_bunches() where they will enclose all calls to
	record_misc_function(), including those in dwarfread.c.

Thu Nov 14 17:02:11 1991  Roland H. Pesch  (pesch at cygnus.com)

	* doc/Makefile.in: new targets gdb.me, gdb.ms, gdb.mm
	(roffable documentation).
	* doc/gdb.texinfo: embedded hints (as comments) for better
	texi2roff conversion.

Thu Nov 14 13:18:25 1991  John Gilmore  (gnu at cygnus.com)

	* m88k-tdep.c (examine_prologue):  Deal with OR instructions
	that shuffle parameters into other regs.
	* symtab.c (decode_line_1):  Fix bug introduced in Per's change
	of Nov 12th.

Wed Nov 13 19:51:11 1991  Steve Chamberlain  (sac at cygnus.com)

	* Makefile.in, xconfig/delta88 made it install a sysV manual page;
	gdb.z into the right place.

Wed Nov 13 16:45:13 1991  John Gilmore  (gnu at cygnus.com)

	Motorola 88000 port without tears, I mean without tdescs.

	* m88k-tdep.c:  Blow away all tdesc stuff.
	Provide functions for all the frame-related macros in
	tm-delta88.h.  Adopt i960-style EXTRA_FRAME_INFO.
	(examine_prologue, frame_find_saved_regs, skip_prologue):  borrow
	from i960-tdep.c and adapt to the function prologues on the 88k.
	(read_next_frame_reg):  Borrow from mips-tdep.c.
	FIXME:  frame_locals_address should go away.

	* tm-delta88.h:  Dump all the tdesc stuff.
	Macros for all frame-related stuff call fns of same name.
	Remove duplicated definitions.  FP_REGNUM becomes same as
	SP_REGNUM.  

	* xm-88k.h:  Eliminate lots of library dependencies, now handled
	in libiberty.  Eliminate KDB nonsupport.

	* doc/gdbint.texinfo:  Add rudiments on frames.  FIXME, add more.


	* stack.c (frame_info):  Mark frameless functions.
	Print locals address (FIXME, remove if same).
	* blockframe.c:  Comment changes, FIXME after.
	* coffread.c:  Even without TDESC, need to zap "@" symbols.
	Don't register for wierd format names; change the names in BFD.

	* alloca.c, language.c, tdesc.c:  Lint.
	* tdesc.c, tdesc-lib: FIXME:  remove these.

Tue Nov 12 19:30:22 1991  John Gilmore  (gnu at cygnus.com)

	* Makefile.in:  Add tdesc library support.  Fixups to lint,
	copying.c rules.

Tue Nov 12 13:43:26 1991  Per Bothner  (bothner at cygnus.com)

	* symtab.c (decode_line_1):  Remove spurious call to operator_chars.

	Allow setting breakpoints on C++ destructors.
	* valops.c (destructor_name_p):  Don't check TYPE_HAS_DESTRUCTOR,
	since it lies.  Rely on callers to catch missing destructors.
	* symtab.c (decode_line_1):  For example (see above), here.
	* buildsym.c, symtab.h:  Remove TYPE_FLAGS_HAS{CON,DE}STRUCTOR
	flags since they are no longer used.

	Fixes to support C++ methods with functional parameters.
	* c-exp.y (func_mod rule):  Allow (and ignore) list of parameter
	types in a function type.
	* eval.c (parse_and_eval_type), value.h:  New function,
	parse_and_eval_type, is based on old code from check_stub_method.
	But don't actually evaluate the cast, since that calls
	value_cast(), whcih may fail.  Just extract the type
	from the parsed expression.
	* values.c (check_stub_method):  While looping through the
	arguments, adjust depth *after* parameter has been handled.
	Replace call and setup of parse_and_eval with new function
	parse_and_eval_type.

Tue Nov 12 09:40:07 1991  Fred Fish  (fnf at cygnus.com)

	* utils.c, rem-multi.shar:  Remove fixed arg count version of
	concat().

	* altos-xdep.c, arm-xdep.c, coffread.c, command.c, convex-xdep.c,
	core.c, dwarfread.c, gould-xdep.c, infcmd.c, language.c,
	m88k-xdep.c, main.c, printcmd.c, pyr-xdep.c, source.c,
	sun386-xdep.c, symm-xdep.c, umax-xdep.c, values.c, xcoffread.c:
	Change all instances of use of fixed args concat() to variable
	args concat() now located in libiberty.

Tue Nov 12 07:23:46 1991  John Gilmore  (gnu at cygnus.com)

	* Makefile.in:  Add xcoffread.c, xcoffexec.c.
	* xcoffread.c:  New file for handling AIX mangled-coff files.
	* xconfig/rs6000, tconfig/rs6000:  New files.
	* buildsym.c:  Add hooks for xcoffread.c.
	* rs6000-pinsn.c, rs6000-tdep.c, rs6000-xdep.c, tm-rs6000.h,
	xm-rs6000.h, rs6k-opcode.def, rs6k-opcode.h:  New files.
	* xcoffexec.c:  New file for handling AIX shared libraries.

Mon Nov 11 19:14:31 1991  Fred Fish  (fnf at cygnus.com)

	* core.c:  Minor rewording of message to user containing name of
	(and possibly arguments to) the program that generated a core
	file.

	* elfread.c:  Remove the register_addr() stub now that it is no
	longer needed.

	* procfs.c:  Move misplaced #endif for ATTACH_DETACH.  Add new
	fetch_core_registers() function for core file support.

Sat Nov  9 13:37:57 1991  Fred Fish  (fnf at cygnus.com)

	* dwarfread.c (dwarf_psymtab_to_symtab):  Remove leftover call
	to do_cleanups() which resulted from a previous change.

	* elfread.c:  Re-enable compilation of register_addr() stub
	whenever it is not supplied by coredep.c

Sat Nov  9 00:40:32 1991  John Gilmore  (gnu at cygnus.com)

	Add tracking of object files (that contain symbols) to gdb.
	This includes a "struct objfile" that owns symtabs and psymtabs
	that were read in from that binary file.

	* symfile.h:  Add struct objfile.  Add pointer to the objfile
	into the struct sym_fns.
	Replace global `symfile' and `symfile_mtime' with
	`symfile_objfile'.  Add global object_files chain.

	* symfile.c:  Move param.h above symtab.h.
	(sort_misc_function_vector):  Add.
	(syms_from_objfile):  Was syms_from_bfd.
	(symfile_open):  Now returns objfile.
	(allocate_objfile):  New.
	(free_objfile):  New, replacing free_all_.*symtabs.
	(symfile_init):  Takes objfile arg, puts it in sym_fns result.
	(reread_symbols):  Searches whole chain of objfiles.
	(allocate_symtab):  Takes objfile as new parameter, chains them.
	Handle INIT_EXTRA_SYMTAB_INFO.
	(free_all_psymtabs, free_all_symtabs):  Move here from symmisc.c.

	* dbxread.c:  Make more errors into complaints.
	(push_subfile, pop_subfile):  Move to buildsym.c.
	(dbx_symfile_read, dbx_symfile_init, fill_symbuf, read_dbx_symtab,
	start_psymtab, psymtab_to_symtab_1, read_ofile_symtab,
	dbx_psymtab_to_symtab, ):  Use bfd ops, don't use file descriptor.
	Pass objfile.  Change callers.
	(fill_symbuf, SWAP_SYMBOL):  Take bfd as arg.
	(read_dbx_symtab):  Just wipe out new symbols, not all, on error.
	(end_psymtab):  Blow away psymtab if empty.
	(process_symbol_pair):  Swallow into read_ofile_symtab.
	(process_one_symbol):  Use push_context and pop_context.
	(virtual_context):  Delete #if 0'd obsolete stuff.

	* buildsym.c (end_symtab):  Pass objfile.
	(dbx_lookup_type):  Handle null typevector.
	(dbx_alloc_type):  Check file number, not sym number, for -1.
	(find_symbol_in_list):  Add for xcoffread.
	(start_symtab):  Default typevector is empty.  Keep reusing same
	context_stack.
	(end_symtab):  Take objfile argument and pass it to
	allocate_symtab.  Don't make a symtab if no blocks or symbols.
	Handle empty typevector.
	(push_context):  New function for context stack nesting.
	(read_type):  Mark FIXME where we need to reintroduce type smashing.

	* buildsym.h (pop_context):  Macro, paired with push_context.
	(subfile_stack):  Move here from dbxread.c.

	* coffread.c (end_symtab, read_coff_symtab):  Take and use objfile arg.
	(read_coff_symtab):  Cleanup by freeing objfile, not all symtabs.

	* mipsread.c (read_mips_symtab, parse_partial_symbols, parse_fdr,
	new_psymtab, new_symtab):  Take and use objfile arg.

	* dwarfread.c (scan_compilation_units, start_psymtab,
	process_dies, end_symtab, dwarf_build_psymtabs,
	read_lexical_block_scope, read_func_scope, read_file_scope):  Take
	and use objfile argument.
	(psymtab_to_symtab_1, read_ofile_symtab):  Don't take or use file
	descriptor.  Use BFD internal functions instead.
	(end_symtab):  Call global allocate_symtab.

	* elfread.c, target.c:  Minor changes to accommodate objfiles.
	* symtab.h:  partial_symbol_table has no symfile_name member now.
	(fn_fieldlists voffset):  avoid non-int bitfield.
	(struct symtab):  Add objfile * and objfile_chain * of symtabs.
	(struct partial_symtab):  Add objfile * and objfile_chain * of
	psymtabs.  Remove symfile_name.

	* symmisc.c:  Lose free_all_symtabs, free_all_psymtabs.
	(printsyms_command):  Rename from print_symtabs.  Add selective
	listing if 2nd argument given.  Print objfile info.
	(printpsyms_command):  Rename from print_partial_symtabs.  Ditto all.
	(printobjfiles_command):  New; prints objfiles lists, and checks
	for consistency of symtab, psymtab, and objfile lists.

	* symfile.h, symfile.c, symtab.h:  Lint