* x86-64-tdep.c (x86_64_push_arguments): Always set %rax to number

	of SSE registers so that varargs functions work.  Rework handling
	of passing arguments on the stack.
	(x86_64_store_return_value): Return double and float values in SSE
	register.

2 files changed, 193 insertions, 142 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 0599d7c..faf1188 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,11 @@
+2003-06-26  Andreas Jaeger  <aj@suse.de>
+
+	* x86-64-tdep.c (x86_64_push_arguments): Always set %rax to number
+	of SSE registers so that varargs functions work.  Rework handling
+	of passing arguments on the stack.
+	(x86_64_store_return_value): Return double and float values in SSE
+	register.
+
 2003-06-24  Michael Chastain  <mec@shout.net>
 
 	* PROBLEMS: Document pr gdb/1091 and pr gdb/1193,
@@ -210,13 +218,13 @@
 
 	* linux-nat.h: New file.
 	* linux-nat.c: Include linux-nat.h.
-	* lin-lwp.c: Include linux-nat.h.  
+	* lin-lwp.c: Include linux-nat.h.
 	Move struct lwp_info def to linux-nat.h.
-	* linux-proc.c: Include linux-nat.h.  
+	* linux-proc.c: Include linux-nat.h.
 	(linux_make_note_section): Iterate over lwps instead of threads.
 	(linux_do_thread_registers): Use lwp instead of merged pid.
 	* config/nm-linux.h: Move miscelaneous def'ns to linux-nat.h.
-	* Makefile.in (lin-lwp.o, linux-proc.o, linux-nat.o): 
+	* Makefile.in (lin-lwp.o, linux-proc.o, linux-nat.o):
 	Add dependency on linux_nat_h.
 
 2003-06-19  Theodore A. Roth  <troth@openavr.org>
@@ -327,7 +335,7 @@
 	* h8300-tdep.c (h8300s_register_name): Enable MACH and MACL
 	registers for H8/300S.
 	(h8300_print_registers_info): Ditto.
-	(h8300_gdbarch_init): Accommodate register count for H8/300S. 
+	(h8300_gdbarch_init): Accommodate register count for H8/300S.
 
 2003-06-18  Daniel Jacobowitz  <drow@mvista.com>
 
@@ -443,7 +451,7 @@
 	* h8300-tdep.c (E_PSEUDO_CCR_REGNUM): New define.
 	(E_PSEUDO_EXR_REGNUM): Ditto.
 	(h8300_is_argument_spill): Check for instructions moving argument
-	registers into safe registers. 
+	registers into safe registers.
 	(h8300_skip_prologue): Check for stm instruction to push registers
 	used for register variables onto stack.
 	(gdb_print_insn_h8300): Remove.
@@ -499,7 +507,7 @@
 
 	* avr-tdep.c (avr_scan_prologue): Update comment describing the various
 	prologue types.
-	Properly scan prologues generated by gcc with the -mcall-prologues 
+	Properly scan prologues generated by gcc with the -mcall-prologues
 	option.
 	Add code to scan -mcall-prologues for mega devices.
 
@@ -550,7 +558,7 @@
 
 	* rdi-share/host.h (Fail): Change to a varargs function.
 	* remote-rdi.c (Fail): Update.
-	
+
 2003-06-15  Mark Kettenis  <kettenis@gnu.org>
 
 	* i386-tdep.c (i386_next_regnum): Fix bounds checking.
@@ -568,7 +576,7 @@
 	* x86-64-tdep.c (x86_64_convert_register_p): New function.
 	(x86_64_init_abi): Set convert_register_p, register_to_value and
 	value_to_register here.
-	
+
 2003-06-14  Andrew Cagney  <cagney@redhat.com>
 
 	* mips-tdep.c (mips_register_to_value): Make static.
@@ -673,7 +681,7 @@
 
 	* gdbarch.sh: Document what PUSH_DUMMY_CALL replaces.
 	* gdbarch.h, gdbarch.c: Re-generate.
-	
+
 2003-06-13  Andrew Cagney  <cagney@redhat.com>
 
 	* gdbarch.sh: Document what UNWIND_DUMMY_ID replaces.  Clarify
@@ -945,8 +953,8 @@
 
 2003-06-11  Jeff Johnston  <jjohnstn@redhat.com>
 
-	* doublest.c (convert_doublest_to_floatformat): When dealing 
-	with the implied integer bit, only alter mant_bits if we are 
+	* doublest.c (convert_doublest_to_floatformat): When dealing
+	with the implied integer bit, only alter mant_bits if we are
 	processing a full 32 bits of mantissa.
 
 2003-06-11  David Carlton  <carlton@bactrian.org>
@@ -1062,7 +1070,7 @@
 
 2003-06-11  Jeff Johnston  <jjohnstn@redhat.com>
 
-	* ia64-tdep.c (ia64_gdbarch_init): Set number of long double 
+	* ia64-tdep.c (ia64_gdbarch_init): Set number of long double
 	bits to 128.
 
 2003-06-11  Andrew Cagney  <cagney@redhat.com>
@@ -1188,7 +1196,7 @@
 	dependencies for building remote.o.
 	* remote-fileio.c: New file implementing the remote File-I/O protocol.
 	* remote-fileio.h: New header file defining remote File-I/O interface.
-	* remote.c (remote_write_bytes, remote_read_bytes): Remove  
+	* remote.c (remote_write_bytes, remote_read_bytes): Remove
 	static storage class.
 	(remote_wait, remote_async_wait): Call remote_fileio_request() on
 	'F' packet.
@@ -1325,7 +1333,7 @@
 	* acinclude.m4 (gcc_AC_CHECK_DECL, (gcc_AC_CHECK_DECL): Stolen
 	from GCC's acinclude.m4.
 	* configure.in: Check for getopt's delcaration.
-	* aclocal.m4, config.in, configure: Re-generate.	
+	* aclocal.m4, config.in, configure: Re-generate.
 	* main.c (error_init): Delete declaration.
 	* defs.h (error_init): Declare.
 	* rs6000-tdep.c (rs6000_fetch_pointer_argument): Make static.
@@ -1442,7 +1450,7 @@
 	(OBJC_FETCH_POINTER_ARGUMENT): Shorthand macro for
 	using FETCH_POINTER_ARGUMENT with Objective-C method arguments.
 	(find_implementation, resolve_msgsend, resolve_msgsend_stret,
-	resolve_msgsend_super, resolve_msgsend_super_stret): 
+	resolve_msgsend_super, resolve_msgsend_super_stret):
 	Use it.
 
 2003-06-07  Andrew Cagney  <cagney@redhat.com>
@@ -1521,7 +1529,7 @@
 	* sh-tdep.c (sh_gdbarch_init): Ditto.
 	* rs6000-tdep.c (rs6000_gdbarch_init): Ditto.
 	* m68hc11-tdep.c (m68hc11_gdbarch_init): Ditto.
-	
+
 2003-06-07  Andrew Cagney  <cagney@redhat.com>
 
 	* elfread.c (elf_symtab_read): Replace "special_local_sym_p" and
@@ -1554,7 +1562,7 @@
 	* win32-nat.c (solib_symbols_add): Allocate section_addrs
 	dynamically.
 	* xcoffread.c (xcoff_symfile_offsets): Avoid use of SECT_OFF_MAX.
-	
+
 2003-06-06  Andrew Cagney  <cagney@redhat.com>
 
 	* d10v-tdep.c (struct d10v_unwind_cache): Delete "return_pc".
@@ -1566,7 +1574,7 @@
 
 2003-06-06  Michal Ludvig  <mludvig@suse.cz>
 
-	* x86-64-tdep.c (x86_64_fill_fxsave): Pass correct regnums 
+	* x86-64-tdep.c (x86_64_fill_fxsave): Pass correct regnums
 	to regcache_collect().
 
 2003-06-05  J. Brobecker  <brobecker@gnat.com>
@@ -1620,7 +1628,7 @@
 	* hppa-tdep.c (hppa_prepare_to_proceed): Remove, no longer used.
 
 2003-06-04  Jeff Johnston  <jjohnstn@redhat.com>
- 
+
 	* acconfig.h: Add HAVE_TKILL_SYSCALL definition check.
 	* config.in: Regenerated.
 	* configure.in: Add test for syscall function and check for
@@ -1638,7 +1646,7 @@
 	(stop_wait_callback): Check for threads already having exited and
 	delete such threads fromt the lwp list when discovered.
 	(stop_callback): Don't assert retcode of kill call.
- 
+
 	Roland McGrath  <roland@redhat.com>
 	* i386-linux-nat.c (ps_get_thread_area): New function needed by
 	nptl libthread_db.
@@ -1651,7 +1659,7 @@
 	(alpha_heuristic_frame_prev_register): Likewise.
 	* alpha-mdebug-tdep.c (alpha_mdebug_frame_prev_register): Likewise.
 
-	* alpha-mdebug-tdep.c (alpha_mdebug_after_prologue): Use 
+	* alpha-mdebug-tdep.c (alpha_mdebug_after_prologue): Use
 	alpha-specific register id names.
 	(alpha_mdebug_frame_unwind_cache): Likewise.
 	(alpha_mdebug_frame_prev_register): Likewise.
@@ -1706,7 +1714,7 @@
 
 2003-06-03  Theodore A. Roth  <troth@openavr.org>
 
-	* remote.c (init_remote_state): Compute sizeof_g_packet by 
+	* remote.c (init_remote_state): Compute sizeof_g_packet by
 	accumulation of the size of all registers instead of blindly using
 	DEPRECATED_REGISTER_BYTES.
 
@@ -1777,7 +1785,7 @@
 
 2003-06-02  Elena Zannoni  <ezannoni@redhat.com>
 
-	* target.h (TARGET_SYMFILE_POSTREAD): Delete unused macro. 
+	* target.h (TARGET_SYMFILE_POSTREAD): Delete unused macro.
 	* symfile.c (reread_symbols): Delete call to TARGET_SYMFILE_POSTREAD.
 	(syms_from_objfile): Ditto.
 
@@ -1797,7 +1805,7 @@
 	(alpha_convert_flt_dbl, alpha_convert_dbl_flt): Remove.
 	(alpha_lds, alpha_sts): New.
 	(alpha_convert_register_p): Change from _register_convertible.
-	(alpha_register_to_value): Change from _convert_to_virtual; 
+	(alpha_register_to_value): Change from _convert_to_virtual;
 	restructure and fail for type sizes other than 4 or 8.
 	(alpha_value_to_register): Similarly.
 	(alpha_extract_return_value): Use alpha_sts.
@@ -1857,7 +1865,7 @@
 	* alpha-tdep.c (alpha_push_dummy_call): Use
 	builtin_type_ieee_double_little instead of builtin_type_double.
 
-	* alpha-tdep.c (alpha_push_dummy_call): Handle ABI mandated 
+	* alpha-tdep.c (alpha_push_dummy_call): Handle ABI mandated
 	sign-extension of 32-bit values.
 	(alpha_store_return_value): Similarly.
 
@@ -2782,7 +2790,7 @@
 2003-05-23  Raoul Gough  <RaoulGough@yahoo.co.uk>
 
 	Committed by Elena Zannoni  <ezannoni@redhat.com>.
-  	* coffread.c(coff_symtab_read): Do relocate static symbols from PE
+	* coffread.c(coff_symtab_read): Do relocate static symbols from PE
 	files, don't relocate absolute symbols (and do use mst_abs).
 
 2003-05-23  Andrew Cagney  <cagney@redhat.com>
@@ -2944,7 +2952,7 @@
 
 	* c-exp.y (typebase): Remove duplicate occurence of
 	`SIGNED_KEYWORD LONG LONG'.  Use builtin_type_long_long instead
-	of lookup_signed_typename. 
+	of lookup_signed_typename.
 
 2003-05-18  Mark Kettenis  <kettenis@gnu.org>
 
@@ -3091,13 +3099,13 @@
 	* Makefile.in (cp-valprint.o): Update dependencies.
 
 2003-05-15  Jeff Johnston  <jjohnstn@redhat.com>
- 
+
 	* ia64-tdep.c: Increase max_skip_non_prologue_insns to 40.
 	(examine_prologue): Support looking through leaf functions, knowing
-	they start with mov r2,r12.  Support skipping over indirect stores 
-	of the input registers.  Upon hitting a non-nop branch instruction 
-	or predicated instruction, bail out by setting lim_pc to the current 
-	pc value in the loop.  At the end, if the lim_pc value is still 
+	they start with mov r2,r12.  Support skipping over indirect stores
+	of the input registers.  Upon hitting a non-nop branch instruction
+	or predicated instruction, bail out by setting lim_pc to the current
+	pc value in the loop.  At the end, if the lim_pc value is still
 	beyond our calculated value and we have trust_limit set,
 	use the lim_pc value.
 
@@ -3124,8 +3132,8 @@
 	declaration.
 
 2003-05-15  David Carlton  <carlton@bactrian.org>
-	
-	Committed by Elena Zannoni <ezannoni@redhat.com>    
+
+	Committed by Elena Zannoni <ezannoni@redhat.com>
 	* symtab.c (lookup_symbol_aux): Delete calls to
 	lookup_symbol_aux_minsyms.
 	(lookup_symbol_aux_minsyms): Comment out function and
@@ -3326,9 +3334,9 @@
 	* avr-tdep.c (avr_remote_translate_xfer_address): Ditto.
 
 2003-05-07  Jeff Johnston  <jjohnstn@redhat.com>
- 
- 	* dwarf2read.c (dwarf_decode_lines): Only use output of 
-	check_cu_functions() when calling record_line().  Do not update 
+
+	* dwarf2read.c (dwarf_decode_lines): Only use output of
+	check_cu_functions() when calling record_line().  Do not update
 	the current address.
 
 2003-05-07  Andrew Cagney  <cagney@redhat.com>
@@ -3368,7 +3376,7 @@
 	* gdbarch.h, gdbarch.c: Re-generate.
 	* remote.c (remote_xfer_memory): Use
 	gdbarch_remote_translate_xfer_address.
-	
+
 2003-05-07  Jeff Johnston  <jjohnstn@redhat.com>
 
 	* infrun.c (prev_pc): Move declaration ahead of proceed().
@@ -3434,7 +3442,7 @@
 	* config/tm-qnxnto.h: New file.
 	* config/i386/i386nto.mt: New file.
 	* config/i386/tm-i386nto.h: New file.
-	
+
 2003-05-04  Andrew Cagney  <cagney@redhat.com>
 
 	* gdbthread.h (save_infrun_state): Drop prev_func_name parameter.
@@ -3457,7 +3465,7 @@
 	that REGISTER_BYTE is consistent with the regcache.
 	* gdbarch.sh (REGISTER_BYTE): Add a predicate.
 	* gdbarch.h, gdbarch.c: Regenerate.
-	
+
 2003-05-04  Mark Kettenis  <kettenis@gnu.org>
 
 	* i387-tdep.c (fxsave_offset): Add entries for %xmm8-%xmm15.
@@ -3506,7 +3514,7 @@
 	(print_formatted): Call gdb_print_insn, instead of print_insn.
 	* Makefile.in (printcmd.o): Update dependencies.
 	(mcore-tdep.o, d10v-tdep.o): Ditto.
-	
+
 2003-05-02  Andrew Cagney  <cagney@redhat.com>
 
 	* std-regs.c (value_of_builtin_frame_pc_reg): Delete #ifdef
@@ -3831,7 +3839,7 @@
 
 2003-04-24  Adam Fedor  <fedor@gnu.org>
 
-	* objc-lang.c (FETCH_ARGUMENT, CONVERT_FUNCPTR): Remove 
+	* objc-lang.c (FETCH_ARGUMENT, CONVERT_FUNCPTR): Remove
 	architecture dependant compilation and mark as unimplemented
 	(until they get put in the gdbarch vector).
 
@@ -3845,7 +3853,7 @@
 	* infcall.c (call_function_by_hand): Eliminate redundant
 	indentation.  Move "saved_async" and "old_cleanups" to where they
 	are needed.
-	
+
 2003-04-23  Andrew Cagney  <cagney@redhat.com>
 
 	* infcall.c (call_function_by_hand): Eliminate the variables "rc"
@@ -3856,7 +3864,7 @@
 	* infcall.c (call_function_by_hand): Move variables "start_sp",
 	"dummy", "sizeof_dummy1" and "dummy1" and corresponding dummy call
 	code to ON_STACK switch branch.
-	
+
 2003-04-23  Andrew Cagney  <cagney@redhat.com>
 
 	* infcall.c (call_function_by_hand): Make declaration of "i",
@@ -3887,7 +3895,7 @@
 
 	* config/pa/tm-hppa.h (SOFT_FLOAT): Delete this macro.
 	Update all the tests using SOFT_FLOAT considering the fact that
-	this macro was always set to 0. 
+	this macro was always set to 0.
 	* config/pa/tm-hppa64.h: Update all the tests using SOFT_FLOAT
 	considering the fact that this macro was always set to 0.
 	* hppa-tdep.h (hppa_store_return_value): Likewise.
@@ -3969,7 +3977,7 @@
 	(i386_fp_regnum_p, i386_fpc_regnum_p, i386_sse_regnum_p,
 	i386_mxcsr_regnum_p): Remove redundant parentheses.
 	(i386_register_name): Use i386_num_register_names.
-	
+
 	* i386-tdep.c (i386_extract_return_value,
 	i386_store_return_value): Correct check for availability of
 	floating-point registers.
@@ -4006,7 +4014,7 @@
 
 	Committed by Elena Zannoni  <ezannoni@redhat.com>
 	* gdb_gcore.sh: New script to create a core dump of a process.
-	
+
 2003-04-17  Elena Zannoni  <ezannoni@redhat.com>
 
 	* values.c (value_being_returned): Don't fetch the return
@@ -4015,11 +4023,11 @@
 2003-04-17  Jeff Johnston  <jjohnstn@redhat.com>
 
 	* thread-db.c: Reindented.
- 
+
 2003-04-17  Jeff Johnston  <jjohnstn@redhat.com>
- 
- 	* gdb_indent.sh: Recognize td_thrhandle_t, td_event_msg_t, 
- 	td_thr_events_t, td_notify_t, td_thr_iter_f, and td_thrinfo_t
+
+	* gdb_indent.sh: Recognize td_thrhandle_t, td_event_msg_t,
+	td_thr_events_t, td_notify_t, td_thr_iter_f, and td_thrinfo_t
 	as types.
 
 
@@ -4045,7 +4053,7 @@
 
 
 
-	
+
 2003-04-16  Kevin Buettner  <kevinb@redhat.com>
 
 	* rs6000-tdep.c (rs6000_gdbarch_init): For the SysV ABI, set
@@ -4383,7 +4391,7 @@
 	* alpha-tdep.c (alpha_init_frame_pc_first): Update.
 	* x86-64-tdep.h (x86_64_linux_saved_pc_after_call): Update
 	declaration.
-	
+
 2003-04-11  Andrew Cagney  <cagney@redhat.com>
 
 	* i387-tdep.c: Update copyright.
@@ -4605,7 +4613,7 @@
 	be freed more than once, causing wild memory corruptions.
 	(gdb_disassembly): Look for the substring "-thread",
 	instead of "-threads" in the target name, to make sure to find
-	the 'multi-thread' target.  Also, make sure we do the right thing 
+	the 'multi-thread' target.  Also, make sure we do the right thing
 	with the "core" target.
 
 2003-04-07  Kevin Buettner  <kevinb@redhat.com>
@@ -4746,7 +4754,7 @@
 	* frame-unwind.h: Include "frame.h".
 	(struct frame_unwind): Add "type" field.
 	* Makefile.in (frame_unwind_h): Add $(frame_h).
-	
+
 2003-04-04  Andrew Cagney  <cagney@redhat.com>
 
 	* x86-64-tdep.c (x86_64_unwind_dummy_id): Use frame_id_build.
@@ -4842,13 +4850,13 @@
 	(d10v_frame_this_id): Use the previous frame's inner most stack
 	address and this frame's func address for the frame ID.  Use
 	frame_id_build.  Don't analyze beyond the current instruction.
-	
+
 2003-04-01  Andrew Cagney  <cagney@redhat.com>
 
 	* frame.h (get_frame_locals_address, get_frame_args_address):
 	Refer to the base address, instead of the address of the first
 	local or parameter.
-	
+
 2003-04-01  Andrew Cagney  <cagney@redhat.com>
 
 	Add frame debug info addresses:
@@ -5098,7 +5106,7 @@
 	* valops.c (hand_function_call): Replace TARGET_WRITE_SP with
 	DEPRECATED_DUMMY_WRITE_SP.  Call when the method is available,
 	instead of when push_dummy_call is not available.
-	
+
 2003-03-30  Andrew Cagney  <cagney@redhat.com>
 
 	* infttrace.c: Include "gdbthread.h".
@@ -5138,7 +5146,7 @@
 	* gdbarch.sh (CALL_DUMMY_WORDS, SIZEOF_CALL_DUMMY_WORDS): Always
 	define.
 	* gdbarch.h: Regenerate.
-	
+
 2003-03-29  Andrew Cagney  <cagney@redhat.com>
 
 	* infttrace.h: New file.
@@ -5222,7 +5230,7 @@
 	TARGET_WRITE_SP.
 	* sparc-tdep.c (sparc_push_dummy_frame): Ditto.
 	(sparc_pop_frame): Ditto.
-	
+
 2003-03-27  Andrew Cagney  <cagney@redhat.com>
 
 	* NEWS: Mention removal of support for hppa*-*-bsd* and
@@ -5364,7 +5372,7 @@
 	* cris-tdep.c (cris_gdbarch_init): Ditto.
 	* m68k-tdep.c (m68k_gdbarch_init): Ditto.
 	* m68hc11-tdep.c (m68hc11_gdbarch_init): Ditto.
-	
+
 2003-03-25  Andrew Cagney  <cagney@redhat.com>
 
 	* gdbarch.sh (DEPRECATED_STORE_STRUCT_RETURN): Replace
@@ -5396,7 +5404,7 @@
 	* avr-tdep.c (avr_gdbarch_init): Update.
 	* arm-tdep.c (arm_gdbarch_init): Update.
 	* alpha-tdep.c (alpha_gdbarch_init): Update.
-	
+
 2003-03-25  Andrew Cagney  <cagney@redhat.com>
 
 	* gdbarch.sh (CALL_DUMMY_STACK_ADJUST_P): Delete.
@@ -5530,7 +5538,7 @@
 	* arm-tdep.c (show_arm_command): Don't print out help.  Instead, show
 	the current setting of each value.
 	(_initialize_arm_tdep): Delete variable new_cmd and add new vars
-	new_set and new_show.  Use add_setshow_cmd_full and 
+	new_set and new_show.  Use add_setshow_cmd_full and
 	add_setshow_boolean_cmd as appropriate.  Deprecate "set/show apcs32"
 	commands and add new version as subcommands of "set/show arm".
 
@@ -5542,7 +5550,7 @@
 	(num_disassembly_options): Renamed from num_flavor_options.
 	(valid_disassembly_styles): Renamed from valid_flavors.
 	(disassembly_style): Renamed from disassembly_flavor.
-	(set_disassembly_style_sfunc): Renamed from 
+	(set_disassembly_style_sfunc): Renamed from
 	set_disassembly_flavor_sfunc.
 	(set_disassembly_style): Renamed from set_disassembly_flavor.
 	(arm_othernames): Updated.
@@ -5796,7 +5804,7 @@
 	* frame.c (frame_register): Update.
 	(get_saved_register): Update.
 	* config/sparc/tm-sparc.h (DEPRECATED_GET_SAVED_REGISTER): Update.
-	
+
 2003-03-13  Andrew Cagney  <cagney@redhat.com>
 
 	* gdbarch.sh (DEPRECATED_POP_FRAME): Replace POP_FRAME.
@@ -5943,7 +5951,7 @@
 	* config/pa/tm-hppa.h (DEPRECATED_FRAME_SAVED_PC): Update.
 	* config/m68k/tm-delta68.h (DEPRECATED_FRAME_SAVED_PC): Update.
 	* config/m68k/tm-linux.h (DEPRECATED_FRAME_SAVED_PC): Update.
-	
+
 2003-03-12  Andrew Cagney  <cagney@redhat.com>
 
 	Eliminate the need for POP_FRAME.
@@ -6088,7 +6096,7 @@
 	* config/pa/tm-hppa.h (DEPRECATED_FRAME_SAVED_PC): Update.
 	* config/m68k/tm-delta68.h (DEPRECATED_FRAME_SAVED_PC): Update.
 	* config/m68k/tm-linux.h (DEPRECATED_FRAME_SAVED_PC): Update.
-	
+
 2003-03-10  Andrew Cagney  <cagney@redhat.com>
 
 	* gdbarch.sh (gdbarch_unwind_pc): New method.
@@ -6136,7 +6144,7 @@
 	* gdbarch.sh: Don't generate two macro definitions when an
 	undefined macro taking no arguments.
 	* gdbarch.h: Regenerate.
-	
+
 2002-03-07  Michal Ludvig  <mludvig@suse.cz>
 
 	* x86-64-tdep.c (x86_64_save_dummy_frame_tos)
@@ -6146,7 +6154,7 @@
 2003-03-07  Michal Ludvig  <mludvig@suse.cz>
 
 	* x86-64-tdep.c (x86_64_function_has_prologue): New function.
-	(x86_64_skip_prologue): Move prologue detection to 
+	(x86_64_skip_prologue): Move prologue detection to
 	separate function.
 	* x86-64-tdep.h (x86_64_function_has_prologue): New prototype.
 
@@ -6159,7 +6167,7 @@
 	* gdbarch.sh (unwind_dummy_id): New multi-arch method with
 	predicate.
 	* gdbarch.h, gdbarch.c: Regneerate.
-	
+
 2003-03-05  Andrew Cagney  <cagney@redhat.com>
 
 	* d10v-tdep.c (struct d10v_unwind_cache): Add field "base".
@@ -6331,7 +6339,7 @@
 
 2003-03-02  Stephane Carrez  <stcarrez@nerim.fr>
 
-	* arch-utils.c (generic_register_byte): Fix to use the loop index 
+	* arch-utils.c (generic_register_byte): Fix to use the loop index
 	and not regnum when summing the size of all registers up to regnum.
 
 2003-03-01  Andrew Cagney  <cagney@redhat.com>
@@ -6380,13 +6388,13 @@
 	* avr-tdep.c (avr_gdbarch_init): Update.
 	* arm-tdep.c (arm_gdbarch_init): Update.
 	* alpha-tdep.c (alpha_gdbarch_init): Update.
-	
+
 2003-03-01  Andrew Cagney  <cagney@redhat.com>
 
 	* main.c (captured_main): Add OPT_WINDOWS and OPT_NOWINDOWS to
 	option enum and switch.  When no windows, set the interpreter to
 	INTERP_CONSOLE.
-	
+
 2003-03-01  Andrew Cagney  <cagney@redhat.com>
 
 	* main.c (captured_main): Replace magic option characters with an
@@ -6555,7 +6563,7 @@
 	* cris-tdep.c (cris_gdbarch_init): Ditto.
 	* avr-tdep.c (avr_gdbarch_init): Ditto.
 	* arm-tdep.c (arm_gdbarch_init): Ditto.
-	
+
 2003-02-26  Kevin Buettner  <kevinb@redhat.com>
 
 	* mips-tdep.c (show_mips_abi): New function.
@@ -6563,9 +6571,9 @@
 	command ``show mips abi''.
 
 2003-02-26  Jeff Johnston  <jjohnstn@redhat.com>
- 
+
 	From Elena Zannoni  <ezannoni@redhat.com>
-	* dbxread.c (process_one_symbol): Only record line 0 if one or 
+	* dbxread.c (process_one_symbol): Only record line 0 if one or
 	more sline entries have been seen for the function.
 
 2003-02-26  Michael Chastain  <mec@shout.net>
@@ -6818,24 +6826,24 @@
 	* c-valprint.c (c_val_print): Ditto.
 	* expprint.c (print_subexp): Ditto.
 	* findvar.c (locate_var_value): Ditto.
-	* infcmd.c (jump_command): Ditto. 
-	* linespec.c (decode_line_2, decode_compound): Ditto. 
-	* maint.c (maintenance_translate_address): Ditto. 
-	* objc-lang.c (compare_selectors, compare_classes): Ditto. 
+	* infcmd.c (jump_command): Ditto.
+	* linespec.c (decode_line_2, decode_compound): Ditto.
+	* maint.c (maintenance_translate_address): Ditto.
+	* objc-lang.c (compare_selectors, compare_classes): Ditto.
 	* printcmd.c (build_address_symbolic, sym_info, print_frame_args):
 	Ditto.
-	* p-valprint.c (pascal_val_print): Ditto. 
-	* stabsread.c (define_symbol): Ditto. 
+	* p-valprint.c (pascal_val_print): Ditto.
+	* stabsread.c (define_symbol): Ditto.
 	* stack.c (print_frame, frame_info, print_block_frame_locals)
-	(print_frame_arg_vars, return_command): Ditto. 
-	* symfile.c (compare_symbols, compare_psymbols): Ditto. 
-	* symmisc.c (print_symbol): Ditto. 
+	(print_frame_arg_vars, return_command): Ditto.
+	* symfile.c (compare_symbols, compare_psymbols): Ditto.
+	* symmisc.c (print_symbol): Ditto.
 	* symtab.c (lookup_partial_symbol, lookup_block_symbol)
 	(compare_search_syms, print_symbol_info, print_msymbol_info)
-	(rbreak_command): Ditto. 
-	* tracepoint.c (tracepoints_info): Ditto. 
-	* typeprint.c (typedef_print): Ditto. 
-	* valops.c (value_of_variable, hand_function_call): Ditto. 
+	(rbreak_command): Ditto.
+	* tracepoint.c (tracepoints_info): Ditto.
+	* typeprint.c (typedef_print): Ditto.
+	* valops.c (value_of_variable, hand_function_call): Ditto.
 	* cli/cli-cmds.c (edit_command, list_command): Ditto.
 	* ada-typeprint.c: Update Copyright.
 	* infcmd.c, objc-lang.c, p-valprint.c, symmisc.c: Ditto.
@@ -6975,7 +6983,7 @@
 	instead of the absence of the "nm.h" file, to determine of the
 	configuration non-native.
 	* configure: Regenerate.
-	
+
 2003-02-14  Elena Zannoni  <ezannoni@redhat.com>
 
 	From Brian Ford  <ford@vss.fsi.com>
@@ -7083,7 +7091,7 @@
 	* sol-thread.c, hpux-thread.c: Include "gdb_stat.h" instead of
 	<sys/stat.h>.
 	* Makefile.in (sol-thread.o, hpux-thread.o): Update dependencies.
-	
+
 2003-02-06  Andrew Cagney  <ac131313@redhat.com>
 
 	* Makefile.in (symm-nat.o): Update dependencies.
@@ -7139,7 +7147,7 @@
 	* infttrace.c (threads_continue_all_but_one): Fix precedence problem
 	with '&' and '!='.
 	(threads_continue_all_with_signals): Ditto.
-  
+
 2003-02-05  Jim Ingham <jingham@apple.com>
 	    Keith Seitz  <keiths@redhat.com>
 	    Elena Zannoni  <ezannoni@redhat.com>
@@ -7234,7 +7242,7 @@
 
 2003-02-04  Andrew Cagney  <ac131313@redhat.com>
 
-	* NEWS: Note that the m32r-*-elf* is obsolete. 
+	* NEWS: Note that the m32r-*-elf* is obsolete.
 	* monitor.c (monitor_expect): Obsolete reference to m32r.
 	* configure.tgt: Mark m32r-*-elf* as obsolete.
 	* MAINTAINERS: Mark m32k as obsolete.
@@ -7358,7 +7366,7 @@
 	(allocate_objfile): Call it.
 	* objfiles.h (terminate_minimal_symbol_table): New declaration.
 	(ALL_MSYMBOLS): No need to test whether (objfile)->msymbols is
-	non-NULL. 
+	non-NULL.
 	* minsyms.c (lookup_minimal_symbol_by_pc_section): To see whether
 	objfile has minimal symbols, compare minimal_symbol_count to zero,
 	instead of comparing msymbols with NULL.
@@ -7366,7 +7374,7 @@
 	* solib-sunos.c (solib_add_common_symbols): Call
 	terminate_minimal_symbol_table.
 	* symfile.c (reread_symbols): Same.
-	
+
 2003-02-03  Kevin Buettner  <kevinb@redhat.com>
 
 	* s390-tdep.c (s390_address_class_type_flags)
@@ -7383,7 +7391,7 @@
 
 	* dwarf2cfi.c (pointer_encoding): Added new parameter.
 	* dwarf2cfi.c, dwarf2read.c: Changed all warnings and
-	error messages to contain BFD filename. 
+	error messages to contain BFD filename.
 
 2003-02-02  Elena Zannoni  <ezannoni@redhat.com>
 
@@ -7409,7 +7417,7 @@
 	(breakpoint_1): Use cleanup to invoke ui_out_table_end().
 	* cli/cli-setshow.c (cmd_show_list): Use
 	make_cleanup_ui_out_tuple_begin_end.
-	
+
 2003-02-02  Andrew Cagney  <ac131313@redhat.com>
 
 	* frame.c (frame_unwind_register): New function.
@@ -7496,7 +7504,7 @@
 	(som_solib_add): Use.
 	* hppa-tdep.c (hppa_pointer_to_address_hack): New function.
 	* hppa-tdep.c (unwind_command): Use.
-	
+
 2003-02-01  Andrew Cagney  <ac131313@redhat.com>
 
 	* gdb_dirent.h: Mark up valid uses of <dirent.h>, d_namelen and
@@ -7548,7 +7556,7 @@
 
 	* objc-exp.y, c-exp.y, f-exp.y: Remove PTR casts.
 	* utils.c: Update comments documenting legitimate uses of PTR.
-	
+
 	* utils.c: Re-indent.
 
 	* config/djgpp/fnchange.lst: Delete nindy files.
@@ -7593,7 +7601,7 @@
 	elfstab_build_psymtabs.
 	* gdb-stabs.h (struct dbx_symfile_info): Add stab_section.
 	(DBX_STAB_SECTION): New macro.
-	* stabsread.h (elfstab_build_psymtabs): Update prototype. 
+	* stabsread.h (elfstab_build_psymtabs): Update prototype.
 	* symfile.c (symfile_dummy_outputs): New function.
 	(symfile_relocate_debug_section): New function.
 	* symfile.h (symfile_relocate_debug_section): Add prototype.
@@ -7678,7 +7686,7 @@
 	    Daniel Jacobowitz  <drow@mvista.com>
 
 	Fix PR gdb/961.
-	* dwarf2read.c 	(dwarf_ranges_offset, dwarf_ranges_size): New
+	* dwarf2read.c	(dwarf_ranges_offset, dwarf_ranges_size): New
 	variables.
 	(RANGES_SECTION): New.
 	(dwarf_ranges_buffer): New variable.
@@ -7831,7 +7839,7 @@
 	now pass in either a `struct section_addr_info' list to say where
 	each section is loaded, or a `struct section_offsets' table.  Pass
 	these new arguments through to syms_from_objfile as appropriate.
-	(symbol_file_add): Just call symbol_file_add_with_addrs_or_offsets, 
+	(symbol_file_add): Just call symbol_file_add_with_addrs_or_offsets,
 	with the appropriate quiescent values for the new arguments.
 
 	* symfile.c: #include "gdb_assert.h".
@@ -7981,7 +7989,7 @@
 	(COMMON_OBS): Add frame-unwind.o.
 	(frame-unwind.o): Specify dependencies.
 	(frame.o, dummy-frame.o): Update dependencies.
-	
+
 2003-01-18  Andrew Cagney  <ac131313@redhat.com>
 
 	* ada-valprint.c: Eliminate PTR.
@@ -7992,7 +8000,7 @@
 	* remote-mips.c, remote-sds.c, remote-vx.c: Ditto.
 	* solib-svr4.c, solib.c, stack.c, symfile.c, symfile.h: Ditto.
 	* symmisc.c, v850ice.c, xcoffread.c, cli/cli-script.c: Ditto.
-	
+
 2003-01-17  Andrew Cagney  <ac131313@redhat.com>
 
 	* main.c (captured_main): Don't use PTR.
@@ -8037,7 +8045,7 @@
 	* breakpoint.c (until_break_command): Add new argument.  Use it to
 	decide whether to stop only at the current frame or not.
 	* breakpoint.h (until_break_command): Update prototype.
- 	* infcmd.c (until_command): Add new argument to until_break_command
+	* infcmd.c (until_command): Add new argument to until_break_command
 	call.
 	(advance_command): New function.
 	(_initialize_infcmd): Update help string for 'until' command.
@@ -8078,7 +8086,7 @@
 	* buildsym.c (start_subfile): Obsolete comment pertinent to Cfront.
 	Update copyright year.
 	* dbxread.c(struct cont_elem): Obsolete.
-	(process_later, process_now): Obsolete functions. 
+	(process_later, process_now): Obsolete functions.
 	(read_dbx_symtab, read_ofile_symtab): Obsolete cfront support.
 	Update copyright year.
 	* gdbtypes.c (INIT_EXTRA, ADD_EXTRA): Obsolete macros.
@@ -8368,7 +8376,7 @@
 	* ns32k-tdep.c, s390-tdep.c, sh-tdep.c, sparc-tdep.c: Ditto.
 	* v850-tdep.c, vax-tdep.c, x86-64-linux-tdep.c: Ditto.
 	* xstormy16-tdep.c: Ditto.
-	
+
 2003-01-07  Andrew Cagney  <cagney@redhat.com>
 
 	* alpha-tdep.c: Use get_frame_base.
@@ -8380,7 +8388,7 @@
 	* x86-64-linux-tdep.c, xstormy16-tdep.c: Ditto.
 	* config/h8500/tm-h8500.h, config/mn10200/tm-mn10200.h: Ditto.
 	* config/sparc/tm-sparc.h: Ditto.
-	
+
 2003-01-07  Andrew Cagney  <cagney@redhat.com>
 
 	* frame.c (deprecated_get_frame_context): New function.
@@ -8389,7 +8397,7 @@
 	(deprecated_set_frame_context): Declare.
 	* dwarf2cfi.c (UNWIND_CONTEXT): Use deprecated_get_frame_context.
 	(cfi_init_extra_frame_info): Use deprecated_set_frame_context.
-	
+
 2003-01-07  Andrew Cagney  <cagney@redhat.com>
 
 	* frame.c (deprecated_set_frame_next_hack): New function.
@@ -8495,7 +8503,7 @@
 
 2003-01-06  Michal Ludvig  <mludvig@suse.cz>
 
-	* x86-64-linux-nat.c (i386_sse_regnum_p): Deleted. Not needed anymore 
+	* x86-64-linux-nat.c (i386_sse_regnum_p): Deleted. Not needed anymore
 	since it is in i386-tdep.c.
 
 2003-01-06  J. Brobecker  <brobecker@gnat.com>
@@ -8826,7 +8834,7 @@
 	* avr-tdep.c, cris-tdep.c: Ditto.
 	* mcore-tdep.c, mips-tdep.c, mn10200-tdep.c: Ditto.
 	* sh-tdep.c, sparc-tdep.c, v850-tdep.c: Ditto.
-	
+
 2003-01-03  Mark Kettenis  <kettenis@gnu.org>
 
 	* configure.in: Remove --enable-netrom option.
@@ -8849,7 +8857,7 @@
 	subscripts.  Remove evil changequotes here.
 	* acconfig.h (TARGET_CPU_DEFAULT): Remove.
 	* config.in, configure: Regenerated.
-	
+
 	* acconfig.h (DEFAULT_BFD_ARCH, DEFAULT_BFD_VEC): Remove.
 	* configure.in: Cleanup section that sources GDB and BFD configure
 	subscripts.  Remove evil changequotes here.
@@ -8866,7 +8874,7 @@
 	* s390-tdep.c, sh-tdep.c, sparc-tdep.c, v850-tdep.c: Ditto.
 	* vax-tdep.c, x86-64-linux-tdep.c, xstormy16-tdep.c: Ditto.
 	* z8k-tdep.c: Ditto.
-	
+
 2003-01-02  Mark Kettenis  <kettenis@gnu.org>
 
 	* configure.in: Remove UI_OUT configuration code.
diff --git a/gdb/x86-64-tdep.c b/gdb/x86-64-tdep.c
index 906ebd9..0fe2485 100644
--- a/gdb/x86-64-tdep.c
+++ b/gdb/x86-64-tdep.c
@@ -597,7 +597,15 @@ x86_64_push_arguments (struct regcache *regcache, int nargs,
 {
   int intreg = 0;
   int ssereg = 0;
+  /* For varargs functions we have to pass the total number of SSE arguments
+     in %rax.  So, let's count this number.  */
+  int total_sse_args = 0;
+  /* Once an SSE/int argument is passed on the stack, all subsequent
+     arguments are passed there.  */
+  int sse_stack = 0;
+  int int_stack = 0;
   int i;
+  char buf[8];
   static int int_parameter_registers[INT_REGS] =
   {
     X86_64_RDI_REGNUM, 4,	/* %rdi, %rsi */
@@ -623,9 +631,7 @@ x86_64_push_arguments (struct regcache *regcache, int nargs,
       int needed_sseregs;
 
       if (!n ||
-	  !examine_argument (class, n, &needed_intregs, &needed_sseregs)
-	  || intreg / 2 + needed_intregs > INT_REGS
-	  || ssereg / 2 + needed_sseregs > SSE_REGS)
+	  !examine_argument (class, n, &needed_intregs, &needed_sseregs))
 	{			/* memory class */
 	  stack_values[stack_values_count++] = i;
 	}
@@ -633,6 +639,13 @@ x86_64_push_arguments (struct regcache *regcache, int nargs,
 	{
 	  int j;
 	  int offset = 0;
+
+	  if (intreg / 2 + needed_intregs > INT_REGS)
+	    int_stack = 1;
+	  if (ssereg / 2 + needed_sseregs > SSE_REGS)
+	    sse_stack = 1;
+	  total_sse_args += needed_sseregs;
+
 	  for (j = 0; j < n; j++)
 	    {
 	      switch (class[j])
@@ -640,38 +653,56 @@ x86_64_push_arguments (struct regcache *regcache, int nargs,
 		case X86_64_NO_CLASS:
 		  break;
 		case X86_64_INTEGER_CLASS:
-		  regcache_cooked_write
-		    (regcache, int_parameter_registers[(intreg + 1) / 2],
-		     VALUE_CONTENTS_ALL (args[i]) + offset);
-		  offset += 8;
-		  intreg += 2;
+		  if (int_stack)
+		    stack_values[stack_values_count++] = i;
+		  else
+		    {
+		      regcache_cooked_write
+			(regcache, int_parameter_registers[(intreg + 1) / 2],
+			 VALUE_CONTENTS_ALL (args[i]) + offset);
+		      offset += 8;
+		      intreg += 2;
+		    }
 		  break;
 		case X86_64_INTEGERSI_CLASS:
-		  {
-		    LONGEST val = extract_signed_integer
-		      (VALUE_CONTENTS_ALL (args[i]) + offset, 4);
-		    regcache_cooked_write_signed
-		      (regcache, int_parameter_registers[intreg / 2], val);
-
-		    offset += 8;
-		    intreg++;
-		    break;
-		  }
+		  if (int_stack)
+		    stack_values[stack_values_count++] = i;
+		  else
+		    {
+		      LONGEST val = extract_signed_integer
+			(VALUE_CONTENTS_ALL (args[i]) + offset, 4);
+		      regcache_cooked_write_signed
+			(regcache, int_parameter_registers[intreg / 2], val);
+		      
+		      offset += 8;
+		      intreg++;
+		    }
+		  break;
 		case X86_64_SSEDF_CLASS:
 		case X86_64_SSESF_CLASS:
 		case X86_64_SSE_CLASS:
-		  regcache_cooked_write
-		    (regcache, sse_parameter_registers[(ssereg + 1) / 2],
-		     VALUE_CONTENTS_ALL (args[i]) + offset);
-		  offset += 8;
-		  ssereg += 2;
+		  if (sse_stack)
+		    stack_values[stack_values_count++] = i;
+		  else
+		    {
+		      regcache_cooked_write
+			(regcache, sse_parameter_registers[(ssereg + 1) / 2],
+			 VALUE_CONTENTS_ALL (args[i]) + offset);
+		      offset += 8;
+		      ssereg += 2;
+		    }
 		  break;
 		case X86_64_SSEUP_CLASS:
-		  regcache_cooked_write
-		    (regcache, sse_parameter_registers[ssereg / 2],
-		     VALUE_CONTENTS_ALL (args[i]) + offset);
-		  offset += 8;
-		  ssereg++;
+		  if (sse_stack)
+		    stack_values[stack_values_count++] = i;
+		  else
+		    {
+		      regcache_cooked_write
+			(regcache, sse_parameter_registers[ssereg / 2],
+			 VALUE_CONTENTS_ALL (args[i]) + offset);
+		      offset += 8;
+		      ssereg++;
+		    }
 		  break;
 		case X86_64_X87_CLASS:
 		case X86_64_MEMORY_CLASS:
@@ -700,6 +731,11 @@ x86_64_push_arguments (struct regcache *regcache, int nargs,
       write_memory (sp, VALUE_CONTENTS_ALL (arg), len);
     }
 
+  /* Write number of SSE type arguments to RAX to take care of varargs
+     functions.  */
+  store_unsigned_integer (buf, 8, total_sse_args);
+  regcache_cooked_write (regcache, X86_64_RAX_REGNUM, buf);
+
   return sp;
 }
 
@@ -712,7 +748,8 @@ x86_64_store_return_value (struct type *type, struct regcache *regcache,
 {
   int len = TYPE_LENGTH (type);
 
-  if (TYPE_CODE_FLT == TYPE_CODE (type))
+  /* First handle long doubles.  */
+  if (TYPE_CODE_FLT == TYPE_CODE (type)  && len == 16)
     {
       ULONGEST fstat;
       char buf[FPU_REG_RAW_SIZE];
@@ -741,6 +778,12 @@ x86_64_store_return_value (struct type *type, struct regcache *regcache,
          for the tag word is 0x3fff.  */
       regcache_raw_write_unsigned (regcache, FTAG_REGNUM, 0x3fff);
     }
+  else if (TYPE_CODE_FLT == TYPE_CODE (type))
+    {
+      /* Handle double and float variables.  */
+      regcache_cooked_write (regcache,  X86_64_XMM0_REGNUM, valbuf);
+    }
+  /* XXX: What about complex floating point types?  */
   else
     {
       int low_size = REGISTER_RAW_SIZE (0);