Merge Rich's and the gdb-4.3 changes.

[deliverable/binutils-gdb.git] / gdb / ChangeLog

Sat Dec  7 04:12:35 1991  John Gilmore  (gnu at cygnus.com)

	GDB-4.3 release!

	* Makefile.in:  Roll VERSION to 4.3
	* README, TODO, WHATS.NEW, depend:  Update.

	* inflow.c (terminal_inferior):  Avoid error msg if attached.

	* gmalloc.c:  Fix bug that causes malloc & free to
	fail on systems where pointers have the high bit set (0x800efcf0
	for example).  The problem is that the difference between two
	pointers is a signed integer, so the computation

	        (char *) 0x800efcf0 - (char *) 0

	yields a negative value.  The sign of the result of the modulus
	operator is machine dependent for negative operands, thus it is
	possible for it to end up negative.  From Fred Fish.

Fri Dec  6 08:30:36 1991  Fred Fish  (fnf at cygnus.com)

	* dwarfread.c (enum_type, struct_type):  Fixes for opaque and
	anonymous enumerations, structures, and unions.  Now passes all
	the current gdb test suite tests.

Thu Dec  5 21:53:21 1991  John Gilmore  (gnu at cygnus.com)

	* symtab.c (decode_line_1):  If SKIP_PROLOGUE leaves us in
	mid-line, be more careful about possibly advancing to the next line.

Thu Dec  5 18:59:51 1991  Michael Tiemann  (tiemann at cygnus.com)

	* cplus-dem.c (cplus_demangle): Call `string_need' when
	null-terminating a partially-computed string.

Thu Dec  5 18:19:43 1991  Fred Fish  (fnf at cygnus.com)

	* dwarfread.c (enum_type):  Build a correct TYPE_NAME, add a
	symbol to the symbol table for each member of the enum.

	* dwarfread.c (struct_type):  Build a correct TYPE_NAME.

	* dwarfread.c (add_enum_psymbol):  New function to extract enum
	member names and add them to the partial symbol table while
	building partial symbol tables.

Thu Dec  5 17:31:05 1991  John Gilmore  (gnu at cygnus.com)

	* symtab.c (check_stub_method):  Must allocate two extra argument
	slots (one for `this', one for arglist terminator).

Thu Dec  5 10:51:05 1991  Fred Fish  (fnf at cygnus.com)

	* inflow.c (child_terminal_info): Supply missing '"' character.

	* buildsym.c (define_symbol):  Supply missing parenthesis.

Thu Dec  5 03:34:21 1991  John Gilmore  (gnu at cygnus.com)

	* coredep.c (fetch_core_registers):  Fencepost error.  Fixed by
	Jay Lepreau <lepreau@cs.utah.edu>.

	* inflow.c:  Remember whether GDB has a terminal.  Avoid switching
	terminals back and forth if we don't have one.

	* c-exp.y (parse_number):  Zero is not an unsigned int constant!
	* dbxread.c (read_dbx_symtab):  Enum type numbers can be in (1,2) form.

	Improve type parsing.
	* buildsym.c (define_symbol, read_range_type): Add
	long_kludge_name that passes the names of range types being
	defined, down to where we must choose between 'int' and 'long'
	variants.  This fails on Sun C anyway since the compiler itself is
	confused between int and long.
	(read_array_type, cleanup_undefined_types):  Correct the size of
	array type whose element-type size isn't immediately known.

	Early preparation to blow away many builtin types, building them
	on the fly as needed.  Don't compare types to builtin types with
	==; examine the relevant fields instead.
	* coffread.c (process_coff_symbol: C_ARG, C_REGPARM):  Avoid ==.
	* buildsym.c (define_symbol, case 'p'):  Avoid ==.
	* valops.c (value_arg_coerce):  Avoid ==.  Don't assume host and
	target types are the same.
	* valprint.c (val_print):  I finally understand arrays, remove FIXME.

	* symmisc.c (printpsyms_command):  Reduce redundancy, and put all
	addresses in GDB itself into parens for easy cleanup and diffing.

Wed Dec  4 21:05:30 1991  Fred Fish  (fnf at cygnus.com)

	* dwarfread (enum_type):  Arrange for the order of enumeration
	members to match the source code order; not the order in the
	Dwarf information, which is explicitly reverse order.

Wed Dec  4 18:24:39 1991  John Gilmore  (gnu at cygnus.com)

	* main.c (input_from_terminal_p):  Check whether GDB has a
	terminal at all.
	(initialize_main):  Revise doc for `set editing'.

Wed Dec  4 15:36:39 1991  Fred Fish  (fnf at cygnus.com)

	* dwarfread.c (struct_type):  Handle structures and unions which
	contain DIE's other than just member dies.

Wed Dec  4 01:59:05 1991  John Gilmore  (gnu at cygnus.com)

	* symfile.c (reread_symbols):  Avoid kludging mtime_set, now that
	BFD is fixed.

Tue Dec  3 17:24:57 1991  John Gilmore  (gnu at cygnus.com)

	* Makefile.in:  VERSION 4.2.96.

	* main.c (initialize_main):  Revise command descriptions.
	* command.c (show_user):  `info user' -> `show user'.	
	* symtab.c (_initialize_symtab):  Typo in `info types' desc.

	* coffread.c (coff_symfile_read):  Avoid select_source_symtab,
	since it is not needed and can cause errors when examining ".o"s.
	(read_coff_symtab, decode_base_type):  Use complain, not printf.
	Print symbol name, not its number.
	Remove "#if defined(clipper) #define BELIEVE_PCC_PROMOTION", which
	someday should go in a clipper target config file.

	* symfile.c (compact_misc_function_vector):  Handle empty vector.
	(complain, clear_complaints, syms_from_objfile):  Fix complaint
	formatting.
	* xcoffexec.c:  Change syms_from_objfile caller.

	* sparc-xdep.c:  Force tm-file as tm-sparc.h, to make it compile
	when configured for cross debugging.  FIXME, this needs a more
	general solution.

Mon Dec  2 11:04:05 1991  Per Bothner  (bothner at cygnus.com)

	* mips-tdep.c (init_extra_frame_info):  Float register
	'i' has gdb-internal number 'FP0+i', not '32+i'.
	* mipsread.c (new_symbol):  Translate g++ special
	symbol "$t" to "this".

Sat Nov 30 21:29:55 1991  Steve Chamberlain  (sac at cygnus.com)
	Changes due to include file renaming:

	* xcoffread.c:	internalcoff.h	->coff/internal.c,
	  		coff-rs6000.h	->coff/rs6000.h
	* mipsread.c:	coff-mips.h	->coff/mips.h
	* elfread.c:    elf-common.h	->elf/common.h 
			elf-external.h	->elf/external.h,
			elf-internal.h	->elf/internal.h
	* dwarfread.c	dwarf.h		->elf/dwarf.h
	* dbxread.c:	aout64.h	->aout/aout64.h
			stab.gnu.h	->aout/stab_gnu.h
		   
	* coffread.c:   internalcoff.h	->coff/internal.h
	* buildsym.c:   stab.gnu.h	->aout/stab_gnu.h
	* depend        Updated to take the above into account.

Fri Nov 29 16:59:25 1991  Fred Fish  (fnf at cygnus.com)

	* configure.in:  Add SVR4 i386 configurations.

	* config/mh-i386v4, config/mt-i386v4, tm-i386v4.h, xm-i386v4.h:
	New files for i386/SVR4.

	* tm-i386v.h:  Allow START_INFERIOR_TRAPS_EXPECTED and
	DECR_PC_AFTER_BREAK to be predefined by files including 
	tm-i386v.h.

	* i386-tdep.c:  Add supply_gregset(), fill_gregset(),
	supply_fpregset(), and fill_fpregset() functions, which are
	target dependent support functions for the SVR4 /proc register
	interface.

	* dwarfread.c (enum_type, struct_type):  Expand recognized
	compiler generated tags to include symbols beginning with '.' as
	well as '~'.

	* symtab.c (sources_info):  Change simple printf of error message
	to call to error().

Fri Nov 29 16:04:21 1991  Roland H. Pesch  (pesch at cygnus.com)

	* doc/gdb.texinfo: remove leading comments that survived M4 but
        described its role in the doc; add one more font to colophon;
        strengthen disclaimer about unsupported configs.

Wed Nov 27 01:23:41 1991  John Gilmore  (gnu at cygnus.com)

	Fix bugs in C++ debugging.

	* symtab.h:  target_type is not used in record types.
	Eliminate TYPE_MAIN_VARIANT and TYPE_NEXT_VARIANT.  Eliminate
	lookup_method_type.  Add TYPE_TYPE_SPECIFIC macro.

	* symtab.c (lookup_member_type):  Don't chain them up, just
	allocate one in symbol_obstack when we need one.
	(allocate_stub_method):  Build stub in symbol_obstack.
	(check_stub_method):  Move here from values.c.  Don't deallocate
	stub; overwrite it.
	(lookup_method_type):  Gone now.

	* buildsym.c: Handle g++ v1 stabs a little bit better.
	Change some C++ parsing error()s to complain()ts.
	* buildsym.c, findvar.c, printcmd.c, symtab.c:  Make unions and
	structs have the same representation and work the same as far as
	C++ is concerned. 
	* buildsym.c, symtab.c, values.c: Remove all references to
	TYPE_MAIN_VARIANT and TYPE_NEXT_VARIANT.

	* valops.c:  Improve comments and indentation.  Only call
	check_stub_method when the stub flag is on.
	* valprint.c:  Fix or mark minor bugs and unportabilities.
	
	* coffread.c (anonymous unions):  Allocate a cplus structure.

	* mipsread.c:  Eliminate "template" types.  Build new, real
	types whenever we need them.  Allocate cplus structures as needed.
	Bulletproof the type parsing a bit more.  Mark storage leaks.
	(parse_type):  Copy TYPE_TYPE_SPECIFIC when copying a real type
	on top of a partial type.

Fri Nov 22 16:39:57 1991  John Gilmore  (gnu at cygnus.com)

	* inflow.c (terminal_inferior):  Check the results of ioctl's, and
	print a message if any of them fail.
	(terminal_ours_1):  Store result of ioctl's for debugging, but
	don't print (the terminal isn't ours...).

	* tm-tahoe.h (FRAME_ARGS_ADDRESS):  No need to offset from frame
	pointer.

	* m2-exp.y (MAX, MIN):  Rename to MAX_FUNC, MIN_FUNC to avoid
	conflicts with system header files.

Fri Nov 22 08:27:40 1991  John Gilmore  (gnu at cygnus.com)

	* Roll VERSION to 4.2.95.

	* buildsym.c, coredep.c, mem-break.c, xcoffread.c:  Put <stdio.h>
	first, before defs.h.
	* config/mh-i386sco: Override compiler to gcc, print warning.
	* configure.in:  Handle i386-none-aout rather than i386-aout-none.
	* infptrace.c, language.h, utils.c:  Lint.
	* m2-exp.y:  #undef MAX and MIN in case system includes set them.
	* xm-tahoe.h:  Set HOST_BYTE_ORDER.  Include system versions of
	{BIG,LITTLE}_ENDIAN and the INT_MAX family first, to avoid
	redefinition warnings.
	* defs.h:  Reorder things so that the xm-file gets first crack
	at #define's, followed by defs.h and then the tm-file.
	* Makefile.in:  Remove spaces after 'ignore exit code' - flags.
	Late-model BSD 'make's don't cope with them.

Thu Nov 21 23:48:56 1991  John Gilmore  (gnu at cygnus.com)

	* Makefile.in:  Roll new files into various lists.

Thu Nov 21 18:26:11 1991  Fred Fish  (fnf at cygnus.com)

	* dwarfread.c (struct_type):  Must initialize the c++ specific
	portion of union types as well as struct types, since gdb attempts
	to reference the c++ specific info for both types.

Thu Nov 21 10:23:52 1991  John Gilmore  (gnu at cygnus.com)

	* Makefile.in: Roll VERSION to 4.2.90.

	* defs.h:  Incorporate param.h into defs.h.  All users changed.
	* param-no-tm.h:  Change users to define TM_FILE_OVERRIDE instead.
	* param.h, param-no-tm.h:  Removed.
	* Update copyrights in all changed files.
	* dbxread.c, dwarfread.c, inflow.c, infrun.c, m2-exp.y, putenv.c,
	solib.c, symtab.h, tm-umax.h, valprint.c:  Lint.
	* tm-convex.h, tm-hp300hpux.h, tm-merlin.h, tm-sparc.h,
	xm-merlin.h:  Avoid host include files in target descriptions.
	* getpagesize.h:  Removed, libiberty copes now.
	* Makefile.in:  Remove getpagesize.h, param.h, param-no-tm.h.

	* exec.c (exec_files_info):  If `verbose' is set, show file offset
	as well.

	* main.c:  Use getcwd rather than getwd.
	* standalone.c:  Fake getcwd rather than getwd.
	* xm-*.h:  Remove fake values of MAXPATHLEN.

	* xcoffexec.c:  Add /* */ to #if 0'd thing to help ANSI.

Wed Nov 20 18:35:56 1991  John Gilmore  (gnu at cygnus.com)

	* Remove gdb/hp-include.  Support for HP a.out oddities should be
	in BFD, not in GDB.  Move gdb/hp-include/a.out.h to include/a.out.hp.h.

	* infptrace.c, tm-sun386.h:  Cashier <a.out.gnu.h>, remove refs.

	* configure.in, xconfig, tconfig, Makefile.in, doc/gdbint.texinfo:
	Makefile fragments for various hosts and targets now come from
	gdb/config/mh-* and gdb/config/mt-*.  This is for consistency with
	other config setups.

	* rs6000-pinsn.c, rs6k-opcode.h:  Clean up.
	* rs6k-opcode.def:  Delete.

Wed Nov 20 05:04:40 1991  Fred Fish  (fnf at cygnus.com)

	* 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

Fri Nov  8 23:38:48 1991  John Gilmore  (gnu at cygnus.com)

	* command.c:  Include param.h.
	* defs.h (warning_setup, warning):  Declare.
	* expprint.c (print_subexp, UNOP_MEMVAL case):  Lint.
	* inflow.c (new_tty):  Use USE_O_NOCTTY #define.
	* language.c, printcmd.c (print_scalar_formatted), signame.c,
	stack.c:  lint.

Thu Nov  7 18:26:15 1991  Steve Chamberlain  (sac at rtl.cygnus.com)

	* Makefile.in: link with libiberty after libreadline, since
	readline might want something in libiberty.
	* m88k-xdep.c: Fixed the register offsets in the ptrace_user
	struct for BCS 88k machines.
	* xm-m88k.h: don't define USIZE if already defined.
	* configure.in: Added delta88 target.

Thu Nov  7 04:51:19 1991  John Gilmore  (gnu at cygnus.com)

	* am29k-pinsn.c, am29k-opcode.h:  Fix decoding of mtacc, dmac, fmac.

	* tm-*.h:  Remove READ_DBX_FORMAT, COFF_FORMAT, and
	READ_MIPS_FORMAT, which have been unused since BFD.  Still
	remaining is COFF_NO_LONG_FILE_NAMES.
	* tm-sun3.h, tm-altos.h:  Remove detritus accidentally left from
	function calling code moved to m68k-tdep.c.

Wed Nov  6 17:21:59 1991  John Gilmore  (gnu at cygnus.com)

	* coffread.c:  Eliminate c_nsyms in favor of c_naux.
	Complain if no auxents on .bf and .ef FCN symbols, and assume
	lots of line numbers.
	(init_linenos, enter_linenos):  Use a sentinel at the end of the
	read-in linenos, to make for a fast, safe loop-end test.

Wed Nov  6 02:54:08 1991  Steve Chamberlain  (sac at cygnus.com)

	* coffread.c (read_coff_symtab): coffread used to rely on the
	x_sym.x_misc.x_lnsz.x_lnno field giving the # of linnos in a
	function. Two of the formats I'm using (29k and 88k) don't seem to
	set it. Ths patch to fcn_last_line and (enter_linenos) is an
	attempt to use the actual size of the linno table in the file to set
	the number of linenos to process.

Tue Nov  5 22:47:46 1991  Steve Chamberlain  (sac at cygnus.com)

	* Makefile.in: put a - infront of the mv y.tab.c c-exp.tab.c and
	mv y.tab.c m2-exp.tab.c, so that if bison is used, and the files
	are created in place, so the mv fails, then the make continues.

Tue Nov  5 16:47:47 1991  Per Bothner  (bothner at cygnus.com)

	Add C++ as a separate language.
	* defs.h (enum language): Add language_cplus.
	* dwarfread.c (end_symtab):  Support language_cplus.
	* c-exp.y:  Add new struct language_defn cplus_language_defn.
	Don't set c to be the default language (see main.c).
	* c-exp.y (yylex):  Only look for field of this if
	language is C++.  (First difference from C!)
	* language.c:  Add case branches for C++ (currently, all
	the same as C).  Also, add c++ to "usage" note for "set lang".
	* valprint.c (typedef_print).  Add case branches for C++. 
	* main.c (main):  New way to set initial language:  Look at
	file extension of psymtab containing main().  (Same as we
	do for symtabs, but avoid loading the symtab yet.)
	* symtab.c: New routine find_main_psymtab(), used by main()
	to set initial language.
	* symfile.c (allocate_symtab):  Move code for mapping file
	extensions-> languages to new deduce_language_from_filename().

	Fix a C++ problem when looking for methods in super-classes.
	There was confusion between base and derived types.
	* valops.c (value_fn_field):  Change function interface.
	* values.c:  Use new value_fn_field interface.

Mon Nov  4 10:49:33 1991  Per Bothner  (bothner at cygnus.com)

	* infrun.c:  Fixed typo in comment.
	* utils.c:  All the v*fprintf emulation is now in libiberty,
	so we can get rid of some junk.
	* xm-sun3os4.h, xm-sun4os4.h, xconfig/decstation, xconfig/i386sco,
	xconfig/sun3os4, xconfig/sun4os4: Don`t need HAVE_STRSTR any more.
	* m68k-pinsn.c (print_insn_arg):  Support BB/BW/BL
	type operands, as used by branch instructions.
	* gmalloc.c: Fix prototype of memcpy.
	* elfread.c: Comment out register_addr, since it conflicts
	with the one in coredep.c.
	* buildsym.h:  Remove extern declarations of two functions
	that are really static in buildsym.c.
	* tm-mips.h: Add symbolic names for more registers.
	* mips-xdep.c (store_inferior_registers): Use new register names.
	* xm-mips.h: Simplify REGISTER_U_ADDR, since it is now
	only used for core files, not ptrace.  Therefore,
	the KERNEL_U_ADDR hack is no longer needed.
	The mapping to ptrace number is now in in mips-xdep.c.
	* mips-xdep.c:  Define REGISTER_PTRACE_ADDR (using the
	mapping from the old REGISTER_U_ADDR), and use it
	in {fetch,store}_inferior_registers.
	* mipsread.c: Rename #include ecoff.h to new name coff-mips.h.
	* mips-tdep.c (mips_push_dummy_frame, mips_pop_frame):
	Save/restore FP regs correctly (?).
	* dbxread.c: Remove duplicate define_symbol and type_synonym_name
	(these had been previously moved to buildsym.c).
	Hence, define_symbol becomes extern instead of static.
	* buildsym.c (read_struct_type):  Comment out bogus handling
	of C++ operator methods.  Minor hacking of reading of class
	contexts. Make define_symbol non-static, so dbxread.c can call it.

Fri Nov  1 11:05:47 1991  John Gilmore  (gnu at cygnus.com)

	* mipsread.c (read_mips_symtab, read_the_mips_symtab):  Use real
	filename with error messages.
	* stack.c (frame_select_command):  Rename to select_frame_command
	to avoid "fr" and "fra" having nonunique completions.
	* symfile.c (sort_symtab_syms):  Ignore sort of zero symtab *.
	(symfile_init):  Print file format name when unable to handle it.
	(free_named_symtabs):  Use BLOCKVECTOR rather than obsolete BLOCKLIST.
	* symmisc.c (free_symtab):  Only free linetable if nonzero.
	* symtab.h:  Remove obsolete BLOCKLIST macros.

Thu Oct 31 18:12:43 1991  Stu Grossman  (grossman at cygnus.com)

	* infrun.c (wait_for_inferior):  another stepi/nexti fix.  Ensure
	that stop_step is 1 at bottom of main loop.  I don't know why this
	needs to be done, but it helps me sleep better at night.

Sun Oct 27 18:18:39 1991  Stu Grossman  (grossman at cygnus.com)

	* main.c (initialize_history):  Read history after reading all
	init files.

Sun Oct 27 14:09:25 1991  John Gilmore  (gnu at cygnus.com)

	* buildsym.c:  Break out initial malloc sizes.
	(record_line):  Record directly in a subfile.  Alloc on demand.
	(compare_line_numbers):  Add from xcoffread.c.
	(end_symtab):  New params say whether to sort pendings and
	linetable.  Patch block stabs if defined.  Shrink linetable before
	allocating the symtab.
	* buildsym.h:  Delete line_vector* and prev_line_number.  Add 
	global_stabs and file_stabs for xcoffread.
	* dbxread.c (start_subfile):  Move to buildsym.  Change above calls.
	* symtab.h:  LINETABLE(symtab) can now be null.  Zap LINELIST.
	* symmisc.c, symtab.c:  Cope with null LINETABLEs.

	* blockframe.c:  Pass fromleaf to INIT_EXTRA_FRAME_INFO.
	* tm-29k.h, tm-88k.h, tm-i960.h, tm-irix3.h, tm-mips.h, tm-pyr.h,
	tm-sparc.h:  Accept fromleaf parameter.
	* c-exp.y (yyerror):  Pass error message if given.
	* configure.in:  Add rs6000 host and target.
	* inflow.c (new_tty):  O_NOCTTY kludge for RS/6000.
	* symfile.h (entry_point):  Add.

Sat Oct 26 00:16:32 1991  John Gilmore  (gnu at cygus.com)

	* buildsym.c:  New file.  Breaks out symbol-table-building routines
	from dbxread.c, so they can be shared with xcoffread.c.
	* buildsym.h:  New file.  Declarations for buildsym.c users.
	* dbxread.c:  Remove large chunks into buildsym.c.
	* Makefile.in:  Add buildsym.c and buildsym.h.

	* symfile.c (syms_from_bfd):  New routine.
	(add_symbol_file):  Call it to do the real work.
	(syms_from_bfd):  Initialize entry_point before calling symfile_init.
	* symtab.h, symfile.c, coffread.c, mipsread.c, dwarfread.c:
	Avoid declaring or setting entry_point (symfile.h & symfile.c cope).

Fri Oct 25 10:58:16 1991  Mark Eichin  (eichin at cygnus.com)

	* cplus-dem.c (cplus-demangle): added support for templates, static
	data, and the new (correct) mangling for destructors.

	* dwarfread.c: (dwarfwarn): created a varargs version of
	dwarfwarn, for non __STDC__ compilers.

	* c-exp.y: (yylex): added match for "template" token.
	(typebase): added TEMPLATE name '<' type '>' clause, for explicit
	specification of template types.

	* symtab.c: (lookup_template_type): new function for finding
	templates in symbol table.
	(type_name_no_tag): changed to explicitly check for s/u/e at the
	beginning of the symbol - if it is a template, none of these will
	be there (but the name will still contain spaces.)

Fri Oct 25 18:59:32 1991  Per Bothner  (bothner at cygnus.com)

	Various fixes to improve g++ debugging.
	* symtab.h:  Add is_const and is_volatile flags for each method.
	These are bit fields - take their space from voffset,
	which shrinks to 30 bits.  Since voffset is now a bitfield,
	make it unsigned for portability.  This changes its interpretation
	slightly:  Static methods now have voffset 1 instead of -1,
	and virtual offsets start at 2, not 1.
	* symtab.c:  Renamed gdb_mangle_typename to gdb_mangle_name,
	since it now returns an entire magled method name, not just
	the type part.  This avoids some duplication.
	It also allows us to correctly mangle const and volatile
	methods (using the new is_const and is_volatile bit fields
	mentioned above).
	* valprint.c (type_print_base), values.c (check_stub_method):
	Simplify by using new gdb_mangle_name.
	* values.c (value_headof):  Fix to correctly handle single
	inheritance (actually two fixes, either of which suffices).
	* dbxread.c (read_struct_type):  Handle const and volatile
	method specifiers.
	* dbxread.c (read_struct_type):  Yet one more place where
	we must handle '\\' continuations.
	* valprint.c (vtbl_ptr_name): Add final '\0'.

Fri Oct 25 16:06:38 1991  Stu Grossman  (grossman at cygnus.com)

	* tm-sparc.h, tm-68k.h (EXTRACT_RETURN_VALUE):  fix output of
	short return values for sparc and 68k.  Patch from Paul Eggert.

	* coffread.c, coredep.c, i386-xdep.c:  install patches for
	SysV/386 3.2 from Mauro DePalma.

Fri Oct 25 02:02:13 1991  John Gilmore  (gnu at cygnus.com)

	* core.c (core_file_info), exec.c (exec_file_info):  Print file
	type.  Use printf_filtered.

	* valops.c (value_fetch_lazy):  Avoid 0-length fetches.

Thu Oct 24 23:06:40 1991  Fred Fish  (fnf at cygnus.com)

	* dwarfread.c:  Add casts to remove compiler warnings.

	* tm-3b1.h, tm-68k.h, tm-altos.h, tm-amix.h, tm-hp300bsd.h,
	tm-hp300hpux.h, tm-isi.h, tm-news.h, tm-pn.h, tm-sun2.h,
	tm-sun3.h:  Remove locally duplicated code for calling functions
	in the inferior.  The only differences were in the specific trap
	vectors used and whether or not an fpu was present.  These are
	now handled by appropriate definitions of BPT_VECTOR and
	HAVE_68881 respectively.  Other minor obvious cleanups.

	* valops.c:  Correct a minor misspelling.

	* utils.c:  Remove local BSD/USG hacks that are now in libiberty.

	* dwarfread.c:  Remove prototype for dwarfwarn.  Does not work
	with <varargs.h>.

Thu Oct 24 09:33:44 1991  John Gilmore  (gnu at cygnus.com)

	* stack.c (frame_command):  Always print.  Use new
	frame_select_command to select a frame without printing.	

	* dwarfread.c:  Use <varargs.h>, since <stdarg.h> is not portable.

Thu Oct 24 01:32:51 1991  Fred Fish  (fnf at cygnus.com)

        * dwarfread.c: New file for DWARF debugging format support.

	* elfread.c: New file for ELF object file format support.

	* procfs.c: New file for SVR4 /proc (process file system) support.

	* tm-amix.h, xm-amix.h, tconfig/amix, xconfig/amix: New files for
	Amiga UNIX support.

	* xm-svr4.h, tm-svr4.h: New files for SVR4 support.

	* xm-m68k.h: New file for host machines with m68k cpu.

	* Makefile.in: Add elfread.c and dwarfread.c to SFILES_MAINDIR.
	Add elfread.o and dwarfread.o to OBS.

	* symfile.h: Add "elf" to list of supported formats in comment.

	* c-exp.y, defs.h, symtab.h, valprint.c:  Add three new builtin
	types to gdb, builtin_type_long_double, builtin_type_complex, and
	builtin_type_double_complex.  Add and use new TARGET_SHORT_BIT,
	TARGET_INT_BIT, TARGET_LONG_BIT, TARGET_FLOAT_BIT,
	TARGET_DOUBLE_BIT, TARGET_LONG_DOUBLE_BIT, TARGET_COMPLEX_BIT, and
	TARGET_DOUBLE_COMPLEX_BIT, as the sizes in bits of the indicated
	types on the target machine (ala the existing TARGET_LONG_LONG_BIT).

	* infrun.c:  When using SVR4 /proc interface instead of ptrace(),
	call proc_set_exec_trap() to setup child to stop at first instruction.

	* inftarg.c: When using SVR4 /proc interface, call proc_wait()
	rather than wait().

	* m68k-tdep.c: Add new routines supply_gregset(), fill_gregset(),
	supply_fpregset(), and fill_fpregset(), which are machine
	dependent support routines for SVR4 /proc interface.

	* utils.c: Add warning_setup() and warning().  Warning() behaves
	the same as error() except that it returns normally rather than
	jumping back to command level.  Modules that don't want to call
	warning() for some reason, but want to produce their own warnings,
	can call warning_setup() to ensure compatibility with the way
	warning() and error() deal with the terminal.

	* symtab.c: Make internal errors produce more useful messages.

	* tm-68k.h: Move code that is duplicated in almost every single
	m68k based machine's configuration files to this common file.
	Duplications in the configuration files still need to be removed
	(FIXME).

	* infrun.c (child_create_inferior): System V versions must call
	setpgrp() with no arguments, to comply with prototyping typically
	in <unistd.h>.

	* munch: Add support for SVR4 style nm output.

	* dbxread.c, mipsread.c symmisc.c, symtab.c:  Remove the object
	file specific fields from the partial symbol table structure and
	replace them with a pointer to private data for each different
	flavor of object file reader to initialize appropriately.

Wed Oct 23 09:38:20 1991  John Gilmore  (gnu at cygnus.com)

	* xconfig/sun[34]os4:  Add note about strstr botch on sunos4.0.3c
	and previous.

	* mipsread.c (fixup_undef_type):  New function.  If a struct /
	union / enum is defined in a header file but nowhere else used,
	(by typedefing, pointer referencing or declaration) the mipsread code
	builds the complete tree for the structure but leaves its code as
	TYPE_CODE_UNDEF as it doesn't know what kind of aggregate it is.
	Guess its type based on the details of the members.

Tue Oct 22 18:04:32 1991  Stu Grossman  (grossman at cygnus.com)

	* infrun.c (wait_for_inferior):  Check return value from
	find_pc_line.

Mon Oct 21 17:47:03 1991  Stu Grossman  (grossman at cygnus.com)

	* infrun.c (wait_for_inferior):  fix stepi/nexti that was broken
	by my last edit to this routine.

Mon Oct 21 14:27:43 1991  John Gilmore  (gnu at cygnus.com)

	* tm-sun3.h (FIX_CALL_DUMMY): problem with cross debugging.
	FIX_CALL_DUMMY does unaligned accesses and/or forgets to byte swap
	the values before putting them into the dummy code.  (From Peter
	Schauer)

Mon Oct 21 10:04:39 1991  Steve Chamberlain  (steve at rtl.cygnus.com)

	* configure.in: added ebmon target.

Wed Oct 16 22:49:58 1991  John Gilmore  (gnu at cygnus.com)

	GDB-4.2 release!

	* Makefile.in:  Roll VERSION to 4.2.
	* README, TODO, WHATS.NEW:  Update.

	* core.c (core_open):  Improve error message for bad file.
	Pass .reg virtual memory address to fetch_core_registers to help
	it find the registers in the core-file header.
	* coredep.c (fetch_core_registers):  Take new argument, use it,
	and pass it to register_addr to locate the block of registers.
	* xm-mips.h:  Update KERNEL_U_ADDR for new scheme.  Cleanup a bit.

	* dbxread.c (read_dbx_symtab, process_one_symbol):  Handle
	Sequent N_FN_SEQ like everybody else's N_FN.

	* main.c:  Circumvent SCO cc bug with #if !!defined(USG).
	* tm-i386v.h:  #endif guck.
	* xconfig/i386*:  Remove -Dgetpagesize()=4096 kludge.
	* xconfig/i386sco:  Add HAVE_STRSTR to avoid ANSI bdeath.
	* xconfig/tahoe:  Add REGEX, which seems to be missing.

	* coredep.c:  Add <sys/types.h> for SCOnix.
	* dbxread.c (read_dbx_symntab):  Avoid coredump on malformed file.
	* printcmd.c (print_formatted):  Flush output before disassembly.

Tue Oct 15 20:12:32 1991  Roland H. Pesch  (pesch at fowanton.cygnus.com)

	* doc/refcard.tex (sec "Working Files"): consistent metavars and