[thirdparty/gcc.git] / gcc / config / alpha / vms.h

/* Output variables, constants and external declarations, for GNU compiler.
   Copyright (C) 1996, 1997, 1998, 2000, 2001, 2002, 2004, 2005, 2007, 2008,
   2009, 2010
   Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.

GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.  */

#define TARGET_OBJECT_SUFFIX ".obj"
#define TARGET_EXECUTABLE_SUFFIX ".exe"

/* Alpha/VMS object format is not really Elf, but this makes compiling
   crtstuff.c and dealing with shared library initialization much easier.  */
#define OBJECT_FORMAT_ELF

/* This enables certain macros in alpha.h, which will make an indirect
   reference to an external symbol an invalid address.  This needs to be
   defined before we include alpha.h, since it determines which macros
   are used for GO_IF_*.  */

#define NO_EXTERNAL_INDIRECT_ADDRESS

#define TARGET_OS_CPP_BUILTINS()		\
    do {					\
	builtin_define_std ("vms");		\
	builtin_define_std ("VMS");		\
	builtin_define ("__ALPHA");		\
	builtin_assert ("system=vms");		\
	if (TARGET_FLOAT_VAX)			\
	  builtin_define ("__G_FLOAT");		\
	else					\
	  builtin_define ("__IEEE_FLOAT");	\
    } while (0)

#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_FPREGS|MASK_GAS)
#undef TARGET_ABI_OPEN_VMS
#define TARGET_ABI_OPEN_VMS 1

#undef TARGET_NAME   
#define TARGET_NAME "OpenVMS/Alpha"
#undef TARGET_VERSION
#define TARGET_VERSION fprintf (stderr, " (%s)", TARGET_NAME);           

#define VMS_DEBUG_MAIN_POINTER "TRANSFER$BREAK$GO"

#undef PCC_STATIC_STRUCT_RETURN

/* "long" is 32 bits, but 64 bits for Ada.  */
#undef LONG_TYPE_SIZE
#define LONG_TYPE_SIZE 32
#define ADA_LONG_TYPE_SIZE 64

/* Pointer is 32 bits but the hardware has 64-bit addresses, sign extended.  */
#undef POINTER_SIZE
#define POINTER_SIZE 32
#define POINTERS_EXTEND_UNSIGNED 0

#define MAX_OFILE_ALIGNMENT 524288  /* 8 x 2^16 by DEC Ada Test CD40VRA */

/* The maximum alignment 'malloc' honors.  */
#undef  MALLOC_ALIGNMENT
#define MALLOC_ALIGNMENT ((TARGET_MALLOC64 ? 16 : 8) * BITS_PER_UNIT)

#undef FIXED_REGISTERS
#define FIXED_REGISTERS  \
 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, \
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }

#undef CALL_USED_REGISTERS
#define CALL_USED_REGISTERS  \
 {1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
  1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, \
  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }

/* List the order in which to allocate registers.  Each register must be
   listed once, even those in FIXED_REGISTERS.

   We allocate in the following order:
   $f1			(nonsaved floating-point register)
   $f10-$f15		(likewise)
   $f22-$f30		(likewise)
   $f21-$f16		(likewise, but input args)
   $f0			(nonsaved, but return value)
   $f2-$f9		(saved floating-point registers)
   $1			(nonsaved integer registers)
   $22-$25		(likewise)
   $28			(likewise)
   $0			(likewise, but return value)
   $21-$16		(likewise, but input args)
   $27			(procedure value in OSF, nonsaved in NT)
   $2-$8		(saved integer registers)
   $9-$14		(saved integer registers)
   $26			(return PC)
   $15			(frame pointer)
   $29			(global pointer)
   $30, $31, $f31	(stack pointer and always zero/ap & fp)  */

#undef REG_ALLOC_ORDER
#define REG_ALLOC_ORDER		\
  {33,					\
   42, 43, 44, 45, 46, 47,		\
   54, 55, 56, 57, 58, 59, 60, 61, 62,	\
   53, 52, 51, 50, 49, 48,		\
   32,					\
   34, 35, 36, 37, 38, 39, 40, 41,	\
   1,					\
   22, 23, 24, 25,			\
   28,					\
   0,					\
   21, 20, 19, 18, 17, 16,		\
   27,					\
   2, 3, 4, 5, 6, 7, 8,			\
   9, 10, 11, 12, 13, 14,		\
   26,					\
   15,					\
   29,					\
   30, 31, 63 }

#undef HARD_FRAME_POINTER_REGNUM
#define HARD_FRAME_POINTER_REGNUM 29

/* Define registers used by the epilogue and return instruction.  */
#undef EPILOGUE_USES
#define EPILOGUE_USES(REGNO)    ((REGNO) == 26 || (REGNO) == 29)

#undef INITIAL_ELIMINATION_OFFSET
#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET)			\
  ((OFFSET) = alpha_vms_initial_elimination_offset(FROM, TO))

\f
/* Define a data type for recording info about an argument list
   during the scan of that argument list.  This data type should
   hold all necessary information about the function itself
   and about the args processed so far, enough to enable macros
   such as FUNCTION_ARG to determine where the next arg should go.

   On Alpha/VMS, this is a structure that contains the number of
   arguments and, for each argument, the datatype of that argument.

   The number of arguments is a number of words of arguments scanned so far.
   Thus 6 or more means all following args should go on the stack.  */

enum avms_arg_type {I64, FF, FD, FG, FS, FT};
typedef struct {int num_args; enum avms_arg_type atypes[6];} avms_arg_info;

#undef CUMULATIVE_ARGS
#define CUMULATIVE_ARGS avms_arg_info

/* Initialize a variable CUM of type CUMULATIVE_ARGS
   for a call to a function whose data type is FNTYPE.
   For a library call, FNTYPE is 0.  */

#undef INIT_CUMULATIVE_ARGS
#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \
  (CUM).num_args = 0;						\
  (CUM).atypes[0] = (CUM).atypes[1] = (CUM).atypes[2] = I64;	\
  (CUM).atypes[3] = (CUM).atypes[4] = (CUM).atypes[5] = I64;

#define DEFAULT_PCC_STRUCT_RETURN 0

#undef  ASM_WEAKEN_LABEL
#define ASM_WEAKEN_LABEL(FILE, NAME)                            \
   do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME);  \
        fputc ('\n', FILE); } while (0)

#define READONLY_DATA_SECTION_ASM_OP "\t.rdata"
#define CTORS_SECTION_ASM_OP "\t.ctors"
#define DTORS_SECTION_ASM_OP "\t.dtors"
#define SDATA_SECTION_ASM_OP "\t.sdata"
#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC)              \
   asm (SECTION_OP "\n\t.long " #FUNC"\n");

#undef ASM_OUTPUT_ADDR_DIFF_ELT
#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) gcc_unreachable ()

#undef ASM_OUTPUT_ADDR_VEC_ELT
#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
  fprintf (FILE, "\t.quad $L%d\n", (VALUE))

#undef CASE_VECTOR_MODE
#define CASE_VECTOR_MODE DImode
#undef CASE_VECTOR_PC_RELATIVE

#undef ASM_OUTPUT_CASE_LABEL
#define ASM_OUTPUT_CASE_LABEL(FILE,PREFIX,NUM,TABLEINSN)	\
{ ASM_OUTPUT_ALIGN (FILE, 3); (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM); }

/* This says how to output assembler code to declare an                
   uninitialized external linkage data object.  */ 

#define COMMON_ASM_OP "\t.comm\t"

#undef ASM_OUTPUT_ALIGNED_DECL_COMMON
#define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \
  vms_output_aligned_decl_common (FILE, DECL, NAME, SIZE, ALIGN)
\f
/* Control how constructors and destructors are emitted.  */
#define TARGET_ASM_CONSTRUCTOR  vms_asm_out_constructor
#define TARGET_ASM_DESTRUCTOR   vms_asm_out_destructor

#undef SDB_DEBUGGING_INFO
#undef MIPS_DEBUGGING_INFO
#undef DBX_DEBUGGING_INFO

#define DWARF2_DEBUGGING_INFO 1
#define VMS_DEBUGGING_INFO 1

#define DWARF2_UNWIND_INFO 1

#undef EH_RETURN_HANDLER_RTX
#define EH_RETURN_HANDLER_RTX \
  gen_rtx_MEM (Pmode, plus_constant (stack_pointer_rtx, 8))

#define LINK_EH_SPEC "vms-dwarf2eh.o%s "
#define LINK_GCC_C_SEQUENCE_SPEC "%G"

#ifdef IN_LIBGCC2
/* Get the definition for MD_FALLBACK_FRAME_STATE_FOR from a separate
   file. This avoids having to recompile the world instead of libgcc only
   when changes to this macro are exercised.  */

#define MD_UNWIND_SUPPORT "config/alpha/vms-unwind.h"
#endif

#define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \
  avms_asm_output_external (FILE, DECL, NAME)

typedef struct crtl_name_spec
{
  const char *const name;
  const char *deccname;
  int referenced;
} crtl_name_spec;

#include "config/vms/vms-crtl.h"

/* Alias CRTL names to 32/64bit DECCRTL functions. 
   Fixme: This should do a binary search.  */
#define DO_CRTL_NAMES                                                      \
  do                                                                       \
    {                                                                      \
      int i;                                                               \
      static crtl_name_spec vms_crtl_names[] = CRTL_NAMES;                 \
      static int malloc64_init = 0;                                        \
                                                                           \
      if ((malloc64_init == 0) && TARGET_MALLOC64)          		   \
	{                                                                  \
          for (i=0; vms_crtl_names [i].name; i++)                          \
            {                                                              \
	      if (strcmp ("calloc", vms_crtl_names [i].name) == 0)         \
                vms_crtl_names [i].deccname = "decc$_calloc64";            \
              else                                                         \
	      if (strcmp ("malloc", vms_crtl_names [i].name) == 0)         \
                vms_crtl_names [i].deccname = "decc$_malloc64";            \
              else                                                         \
	      if (strcmp ("realloc", vms_crtl_names [i].name) == 0)        \
                vms_crtl_names [i].deccname = "decc$_realloc64";           \
              else                                                         \
	      if (strcmp ("strdup", vms_crtl_names [i].name) == 0)         \
                vms_crtl_names [i].deccname = "decc$_strdup64";            \
	    }                                                              \
            malloc64_init = 1;                                             \
        }                                                                  \
      for (i=0; vms_crtl_names [i].name; i++)                              \
	if (!vms_crtl_names [i].referenced &&                              \
	    (strcmp (name, vms_crtl_names [i].name) == 0))                 \
	  {                                                                \
	    fprintf (file, "\t%s=%s\n",                        \
		     name, vms_crtl_names [i].deccname);                   \
	    vms_crtl_names [i].referenced = 1;                             \
	  }                                                                \
    } while (0)

/* This is how to output an assembler line
   that says to advance the location counter
   to a multiple of 2**LOG bytes.  */

#undef ASM_OUTPUT_ALIGN
#define ASM_OUTPUT_ALIGN(FILE,LOG)	\
    fprintf (FILE, "\t.align %d\n", LOG);

/* Switch into a generic section.  */
#define TARGET_ASM_NAMED_SECTION vms_asm_named_section

#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2)				\
  do {	fprintf ((FILE), "\t.literals\n");				\
	in_section = NULL;						\
	fprintf ((FILE), "\t");						\
	assemble_name (FILE, LABEL1);					\
	fprintf (FILE, " = ");						\
	assemble_name (FILE, LABEL2);					\
	fprintf (FILE, "\n");						\
  } while (0)

#undef PREFERRED_DEBUGGING_TYPE
#define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG

#define ASM_PN_FORMAT "%s___%lu"

/* ??? VMS uses different linkage.  */
#undef TARGET_ASM_OUTPUT_MI_THUNK

#undef ASM_SPEC
#undef ASM_FINAL_SPEC

/* The VMS convention is to always provide minimal debug info
   for a traceback unless specifically overridden.  */

#undef SUBTARGET_OVERRIDE_OPTIONS
#define SUBTARGET_OVERRIDE_OPTIONS                  \
do {                                                \
  if (write_symbols == NO_DEBUG                     \
      && debug_info_level == DINFO_LEVEL_NONE)      \
    {                                               \
      write_symbols = VMS_DEBUG;                    \
      debug_info_level = DINFO_LEVEL_TERSE;         \
    }                                               \
} while (0)

/* Link with vms-dwarf2.o if -g (except -g0). This causes the
   VMS link to pull all the dwarf2 debug sections together.  */
#undef LINK_SPEC
#define LINK_SPEC "%{g:-g vms-dwarf2.o%s} %{g0} %{g1:-g1 vms-dwarf2.o%s} \
%{g2:-g2 vms-dwarf2.o%s} %{g3:-g3 vms-dwarf2.o%s} %{shared} %{v} %{map}"

#undef STARTFILE_SPEC
#define STARTFILE_SPEC \
"%{!shared:%{mvms-return-codes:vcrt0.o%s} %{!mvms-return-codes:pcrt0.o%s} \
    crtbegin.o%s} \
 %{!static:%{shared:crtbeginS.o%s}}"

#define ENDFILE_SPEC \
"%{!shared:crtend.o%s} %{!static:%{shared:crtendS.o%s}}"

#define NAME__MAIN "__gccmain"
#define SYMBOL__MAIN __gccmain

#define INIT_SECTION_ASM_OP "\t.section LIB$INITIALIZE,GBL,NOWRT"

#define LONGLONG_STANDALONE 1

#undef TARGET_VALID_POINTER_MODE
#define TARGET_VALID_POINTER_MODE vms_valid_pointer_mode
Commit	Line	Data
16b61764	1	/* Output variables, constants and external declarations, for GNU compiler.
5ea8f977	2	Copyright (C) 1996, 1997, 1998, 2000, 2001, 2002, 2004, 2005, 2007, 2008,
c5387660	3	2009, 2010
16b61764 DR	4	Free Software Foundation, Inc.
16b61764 DR	5
7ec022b2	6	This file is part of GCC.
16b61764	7
7ec022b2	8	GCC is free software; you can redistribute it and/or modify
16b61764	9	it under the terms of the GNU General Public License as published by
2f83c7d6	10	the Free Software Foundation; either version 3, or (at your option)
16b61764 DR	11	any later version.
16b61764 DR	12
7ec022b2	13	GCC is distributed in the hope that it will be useful,
16b61764 DR	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
2f83c7d6 NC	19	along with GCC; see the file COPYING3. If not see
2f83c7d6 NC	20	<http://www.gnu.org/licenses/>. */
16b61764 DR	21
	22	#define TARGET_OBJECT_SUFFIX ".obj"
	23	#define TARGET_EXECUTABLE_SUFFIX ".exe"
	24
3bd1b109 DR	25	/* Alpha/VMS object format is not really Elf, but this makes compiling
	26	crtstuff.c and dealing with shared library initialization much easier. */
	27	#define OBJECT_FORMAT_ELF
	28
16b61764 DR	29	/* This enables certain macros in alpha.h, which will make an indirect
	30	reference to an external symbol an invalid address. This needs to be
	31	defined before we include alpha.h, since it determines which macros
	32	are used for GO_IF_. /
	33
	34	#define NO_EXTERNAL_INDIRECT_ADDRESS
	35
12a41c22 NB	36	#define TARGET_OS_CPP_BUILTINS() \
	37	do { \
	38	builtin_define_std ("vms"); \
	39	builtin_define_std ("VMS"); \
	40	builtin_define ("__ALPHA"); \
	41	builtin_assert ("system=vms"); \
e0322d5c NB	42	if (TARGET_FLOAT_VAX) \
	43	builtin_define ("__G_FLOAT"); \
	44	else \
	45	builtin_define ("__IEEE_FLOAT"); \
12a41c22	46	} while (0)
16b61764	47
16b61764	48	#undef TARGET_DEFAULT
8bea7f7c	49	#define TARGET_DEFAULT (MASK_FPREGS\|MASK_GAS)
16b61764 DR	50	#undef TARGET_ABI_OPEN_VMS
	51	#define TARGET_ABI_OPEN_VMS 1
	52
	53	#undef TARGET_NAME
	54	#define TARGET_NAME "OpenVMS/Alpha"
	55	#undef TARGET_VERSION
	56	#define TARGET_VERSION fprintf (stderr, " (%s)", TARGET_NAME);
	57
5ea8f977 DR	58	#define VMS_DEBUG_MAIN_POINTER "TRANSFER$BREAK$GO"
5ea8f977 DR	59
16b61764 DR	60	#undef PCC_STATIC_STRUCT_RETURN
	61
	62	/* "long" is 32 bits, but 64 bits for Ada. */
	63	#undef LONG_TYPE_SIZE
	64	#define LONG_TYPE_SIZE 32
	65	#define ADA_LONG_TYPE_SIZE 64
	66
	67	/* Pointer is 32 bits but the hardware has 64-bit addresses, sign extended. */
	68	#undef POINTER_SIZE
	69	#define POINTER_SIZE 32
	70	#define POINTERS_EXTEND_UNSIGNED 0
	71
	72	#define MAX_OFILE_ALIGNMENT 524288 /* 8 x 2^16 by DEC Ada Test CD40VRA */
	73
5e3fef6c DR	74	/* The maximum alignment 'malloc' honors. */
	75	#undef MALLOC_ALIGNMENT
	76	#define MALLOC_ALIGNMENT ((TARGET_MALLOC64 ? 16 : 8) * BITS_PER_UNIT)
	77
16b61764 DR	78	#undef FIXED_REGISTERS
	79	#define FIXED_REGISTERS \
	80	{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
	81	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, \
	82	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
	83	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }
	84
	85	#undef CALL_USED_REGISTERS
	86	#define CALL_USED_REGISTERS \
	87	{1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
	88	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
	89	1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, \
	90	1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }
	91
	92	/* List the order in which to allocate registers. Each register must be
	93	listed once, even those in FIXED_REGISTERS.
	94
	95	We allocate in the following order:
	96	$f1 (nonsaved floating-point register)
	97	$f10-$f15 (likewise)
	98	$f22-$f30 (likewise)
	99	$f21-$f16 (likewise, but input args)
	100	$f0 (nonsaved, but return value)
	101	$f2-$f9 (saved floating-point registers)
	102	$1 (nonsaved integer registers)
	103	$22-$25 (likewise)
	104	$28 (likewise)
	105	$0 (likewise, but return value)
	106	$21-$16 (likewise, but input args)
	107	$27 (procedure value in OSF, nonsaved in NT)
	108	$2-$8 (saved integer registers)
	109	$9-$14 (saved integer registers)
	110	$26 (return PC)
	111	$15 (frame pointer)
	112	$29 (global pointer)
	113	$30, $31, $f31 (stack pointer and always zero/ap & fp) */
	114
	115	#undef REG_ALLOC_ORDER
	116	#define REG_ALLOC_ORDER \
	117	{33, \
	118	42, 43, 44, 45, 46, 47, \
	119	54, 55, 56, 57, 58, 59, 60, 61, 62, \
	120	53, 52, 51, 50, 49, 48, \
	121	32, \
	122	34, 35, 36, 37, 38, 39, 40, 41, \
	123	1, \
	124	22, 23, 24, 25, \
	125	28, \
	126	0, \
	127	21, 20, 19, 18, 17, 16, \
	128	27, \
	129	2, 3, 4, 5, 6, 7, 8, \
	130	9, 10, 11, 12, 13, 14, \
	131	26, \
	132	15, \
	133	29, \
	134	30, 31, 63 }
	135
	136	#undef HARD_FRAME_POINTER_REGNUM
	137	#define HARD_FRAME_POINTER_REGNUM 29
	138
	139	/* Define registers used by the epilogue and return instruction. */
	140	#undef EPILOGUE_USES
	141	#define EPILOGUE_USES(REGNO) ((REGNO) == 26 \|\| (REGNO) == 29)
142
16b61764 DR	143	#undef INITIAL_ELIMINATION_OFFSET
16b61764 DR	144	#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
1d3499d8 OH	145	((OFFSET) = alpha_vms_initial_elimination_offset(FROM, TO))
1d3499d8 OH	146
16b61764 DR	147	\f
	148	/* Define a data type for recording info about an argument list
	149	during the scan of that argument list. This data type should
	150	hold all necessary information about the function itself
	151	and about the args processed so far, enough to enable macros
	152	such as FUNCTION_ARG to determine where the next arg should go.
	153
	154	On Alpha/VMS, this is a structure that contains the number of
	155	arguments and, for each argument, the datatype of that argument.
	156
	157	The number of arguments is a number of words of arguments scanned so far.
	158	Thus 6 or more means all following args should go on the stack. */
	159
	160	enum avms_arg_type {I64, FF, FD, FG, FS, FT};
	161	typedef struct {int num_args; enum avms_arg_type atypes[6];} avms_arg_info;
	162
	163	#undef CUMULATIVE_ARGS
	164	#define CUMULATIVE_ARGS avms_arg_info
	165
	166	/* Initialize a variable CUM of type CUMULATIVE_ARGS
	167	for a call to a function whose data type is FNTYPE.
	168	For a library call, FNTYPE is 0. */
	169
	170	#undef INIT_CUMULATIVE_ARGS
0f6937fe	171	#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \
16b61764 DR	172	(CUM).num_args = 0; \
	173	(CUM).atypes[0] = (CUM).atypes[1] = (CUM).atypes[2] = I64; \
	174	(CUM).atypes[3] = (CUM).atypes[4] = (CUM).atypes[5] = I64;
	175
050d3f9d	176	#define DEFAULT_PCC_STRUCT_RETURN 0
16b61764	177
3bd1b109 DR	178	#undef ASM_WEAKEN_LABEL
	179	#define ASM_WEAKEN_LABEL(FILE, NAME) \
	180	do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
	181	fputc ('\n', FILE); } while (0)
	182
d48bc59a	183	#define READONLY_DATA_SECTION_ASM_OP "\t.rdata"
16b61764 DR	184	#define CTORS_SECTION_ASM_OP "\t.ctors"
16b61764 DR	185	#define DTORS_SECTION_ASM_OP "\t.dtors"
3bd1b109 DR	186	#define SDATA_SECTION_ASM_OP "\t.sdata"
	187	#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
	188	asm (SECTION_OP "\n\t.long " #FUNC"\n");
16b61764	189
16b61764	190	#undef ASM_OUTPUT_ADDR_DIFF_ELT
56daab84	191	#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) gcc_unreachable ()
16b61764 DR	192
	193	#undef ASM_OUTPUT_ADDR_VEC_ELT
	194	#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
	195	fprintf (FILE, "\t.quad $L%d\n", (VALUE))
	196
16b61764 DR	197	#undef CASE_VECTOR_MODE
	198	#define CASE_VECTOR_MODE DImode
	199	#undef CASE_VECTOR_PC_RELATIVE
	200
	201	#undef ASM_OUTPUT_CASE_LABEL
	202	#define ASM_OUTPUT_CASE_LABEL(FILE,PREFIX,NUM,TABLEINSN) \
4977bab6	203	{ ASM_OUTPUT_ALIGN (FILE, 3); (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM); }
16b61764 DR	204
	205	/* This says how to output assembler code to declare an
	206	uninitialized external linkage data object. */
	207
	208	#define COMMON_ASM_OP "\t.comm\t"
	209
18fd5621 EB	210	#undef ASM_OUTPUT_ALIGNED_DECL_COMMON
	211	#define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \
	212	vms_output_aligned_decl_common (FILE, DECL, NAME, SIZE, ALIGN)
16b61764	213	\f
16b61764 DR	214	/* Control how constructors and destructors are emitted. */
	215	#define TARGET_ASM_CONSTRUCTOR vms_asm_out_constructor
	216	#define TARGET_ASM_DESTRUCTOR vms_asm_out_destructor
	217
	218	#undef SDB_DEBUGGING_INFO
	219	#undef MIPS_DEBUGGING_INFO
	220	#undef DBX_DEBUGGING_INFO
	221
23532de9 JT	222	#define DWARF2_DEBUGGING_INFO 1
23532de9 JT	223	#define VMS_DEBUGGING_INFO 1
16b61764 DR	224
	225	#define DWARF2_UNWIND_INFO 1
	226
	227	#undef EH_RETURN_HANDLER_RTX
	228	#define EH_RETURN_HANDLER_RTX \
	229	gen_rtx_MEM (Pmode, plus_constant (stack_pointer_rtx, 8))
	230
12300dad	231	#define LINK_EH_SPEC "vms-dwarf2eh.o%s "
c889a16f	232	#define LINK_GCC_C_SEQUENCE_SPEC "%G"
16b61764	233
221cf9ab OH	234	#ifdef IN_LIBGCC2
	235	/* Get the definition for MD_FALLBACK_FRAME_STATE_FOR from a separate
	236	file. This avoids having to recompile the world instead of libgcc only
	237	when changes to this macro are exercised. */
	238
8662eb14	239	#define MD_UNWIND_SUPPORT "config/alpha/vms-unwind.h"
221cf9ab	240	#endif
16b61764	241
5e3fef6c DR	242	#define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \
	243	avms_asm_output_external (FILE, DECL, NAME)
	244
	245	typedef struct crtl_name_spec
	246	{
	247	const char *const name;
	248	const char *deccname;
	249	int referenced;
	250	} crtl_name_spec;
	251
	252	#include "config/vms/vms-crtl.h"
	253
	254	/* Alias CRTL names to 32/64bit DECCRTL functions.
	255	Fixme: This should do a binary search. */
	256	#define DO_CRTL_NAMES \
	257	do \
	258	{ \
	259	int i; \
	260	static crtl_name_spec vms_crtl_names[] = CRTL_NAMES; \
	261	static int malloc64_init = 0; \
	262	\
	263	if ((malloc64_init == 0) && TARGET_MALLOC64) \
	264	{ \
	265	for (i=0; vms_crtl_names [i].name; i++) \
	266	{ \
	267	if (strcmp ("calloc", vms_crtl_names [i].name) == 0) \
	268	vms_crtl_names [i].deccname = "decc$_calloc64"; \
	269	else \
	270	if (strcmp ("malloc", vms_crtl_names [i].name) == 0) \
	271	vms_crtl_names [i].deccname = "decc$_malloc64"; \
	272	else \
	273	if (strcmp ("realloc", vms_crtl_names [i].name) == 0) \
	274	vms_crtl_names [i].deccname = "decc$_realloc64"; \
	275	else \
	276	if (strcmp ("strdup", vms_crtl_names [i].name) == 0) \
	277	vms_crtl_names [i].deccname = "decc$_strdup64"; \
	278	} \
	279	malloc64_init = 1; \
	280	} \
	281	for (i=0; vms_crtl_names [i].name; i++) \
	282	if (!vms_crtl_names [i].referenced && \
	283	(strcmp (name, vms_crtl_names [i].name) == 0)) \
	284	{ \
	285	fprintf (file, "\t%s=%s\n", \
	286	name, vms_crtl_names [i].deccname); \
	287	vms_crtl_names [i].referenced = 1; \
	288	} \
	289	} while (0)
	290
e9a25f70 JL	291	/* This is how to output an assembler line
	292	that says to advance the location counter
	293	to a multiple of 2*LOG bytes. /
	294
	295	#undef ASM_OUTPUT_ALIGN
	296	#define ASM_OUTPUT_ALIGN(FILE,LOG) \
	297	fprintf (FILE, "\t.align %d\n", LOG);
	298
7c262518 RH	299	/* Switch into a generic section. */
7c262518 RH	300	#define TARGET_ASM_NAMED_SECTION vms_asm_named_section
e9a25f70 JL	301
e9a25f70 JL	302	#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
d6b5193b RS	303	do { fprintf ((FILE), "\t.literals\n"); \
d6b5193b RS	304	in_section = NULL; \
e9a25f70 JL	305	fprintf ((FILE), "\t"); \
	306	assemble_name (FILE, LABEL1); \
	307	fprintf (FILE, " = "); \
	308	assemble_name (FILE, LABEL2); \
	309	fprintf (FILE, "\n"); \
	310	} while (0)
	311
aacdb8bb	312	#undef PREFERRED_DEBUGGING_TYPE
7a0c8d71	313	#define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG
aacdb8bb	314
4977bab6	315	#define ASM_PN_FORMAT "%s___%lu"
aacdb8bb	316
60593797	317	/* ??? VMS uses different linkage. */
eb0424da	318	#undef TARGET_ASM_OUTPUT_MI_THUNK
60593797	319
aacdb8bb	320	#undef ASM_SPEC
aacdb8bb	321	#undef ASM_FINAL_SPEC
7a0c8d71 DR	322
7a0c8d71 DR	323	/* The VMS convention is to always provide minimal debug info
fddeba6d	324	for a traceback unless specifically overridden. */
7a0c8d71	325
c5387660 JM	326	#undef SUBTARGET_OVERRIDE_OPTIONS
	327	#define SUBTARGET_OVERRIDE_OPTIONS \
	328	do { \
fddeba6d DR	329	if (write_symbols == NO_DEBUG \
	330	&& debug_info_level == DINFO_LEVEL_NONE) \
	331	{ \
	332	write_symbols = VMS_DEBUG; \
	333	debug_info_level = DINFO_LEVEL_TERSE; \
	334	} \
c5387660	335	} while (0)
7a0c8d71 DR	336
7a0c8d71 DR	337	/* Link with vms-dwarf2.o if -g (except -g0). This causes the
d6b4baa4	338	VMS link to pull all the dwarf2 debug sections together. */
aacdb8bb	339	#undef LINK_SPEC
7a0c8d71 DR	340	#define LINK_SPEC "%{g:-g vms-dwarf2.o%s} %{g0} %{g1:-g1 vms-dwarf2.o%s} \
	341	%{g2:-g2 vms-dwarf2.o%s} %{g3:-g3 vms-dwarf2.o%s} %{shared} %{v} %{map}"
	342
aacdb8bb	343	#undef STARTFILE_SPEC
3bd1b109 DR	344	#define STARTFILE_SPEC \
	345	"%{!shared:%{mvms-return-codes:vcrt0.o%s} %{!mvms-return-codes:pcrt0.o%s} \
	346	crtbegin.o%s} \
	347	%{!static:%{shared:crtbeginS.o%s}}"
	348
	349	#define ENDFILE_SPEC \
	350	"%{!shared:crtend.o%s} %{!static:%{shared:crtendS.o%s}}"
aacdb8bb	351
5a598ccc DR	352	#define NAME__MAIN "__gccmain"
5a598ccc DR	353	#define SYMBOL__MAIN __gccmain
5dd8a9b1	354
3bd1b109 DR	355	#define INIT_SECTION_ASM_OP "\t.section LIB$INITIALIZE,GBL,NOWRT"
3bd1b109 DR	356
41823c5e	357	#define LONGLONG_STANDALONE 1
dfe6ba6d DR	358
	359	#undef TARGET_VALID_POINTER_MODE
	360	#define TARGET_VALID_POINTER_MODE vms_valid_pointer_mode