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/* Definitions of target machine GNU compiler. IA64-VMS version.
Copyright (C) 2003-2011 Free Software Foundation, Inc.
Contributed by Douglas B Rupp (rupp@gnat.com).
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"
#define OBJECT_FORMAT_ELF
#define TARGET_OS_CPP_BUILTINS() \
do { \
builtin_define_std ("vms"); \
builtin_define_std ("VMS"); \
builtin_define ("__IA64"); \
builtin_assert ("system=vms"); \
builtin_define ("__IEEE_FLOAT"); \
} while (0)
/* By default, allow $ to be part of an identifier. */
#define DOLLARS_IN_IDENTIFIERS 2
#undef TARGET_ABI_OPEN_VMS
#define TARGET_ABI_OPEN_VMS 1
/* Need .debug_line info generated from gcc and gas. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_DWARF2_ASM | MASK_GNU_AS)
#define VMS_DEBUG_MAIN_POINTER "TRANSFER$BREAK$GO"
/* "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
#undef MAX_OFILE_ALIGNMENT
#define MAX_OFILE_ALIGNMENT 524288 /* 8 x 2^16 by DEC Ada Test CD40VRA */
/* Widest floating-point type efficiently supported by hardware and OS. */
#undef WIDEST_HARDWARE_FP_SIZE
#define WIDEST_HARDWARE_FP_SIZE 64
/* The structure return address arrives as an "argument" on VMS. */
#undef PCC_STATIC_STRUCT_RETURN
/* Turn on VMS specific Dwarf2 features. */
#define VMS_DEBUGGING_INFO 1
#define ASM_OUTPUT_DWARF_VMS_DELTA(FILE,SIZE,LABEL1,LABEL2) \
do { \
fprintf (FILE, "\tdata4.ua\t@slotcount("); \
assemble_name (FILE, LABEL1); \
fprintf (FILE, "-"); \
assemble_name (FILE, LABEL2); \
fprintf (FILE, ")"); \
} while (0)
#undef STARTFILE_SPEC
#define STARTFILE_SPEC \
"%{!shared:%{mvms-return-codes:vcrt0.o%s} %{!mvms-return-codes:pcrt0.o%s} \
crtbegin.o%s} \
%{!static:%{shared:crtinitS.o%s crtbeginS.o%s}}"
#undef ENDFILE_SPEC
#define ENDFILE_SPEC \
"%{!shared:crtend.o%s} %{!static:%{shared:crtendS.o%s}}"
#define LINK_GCC_C_SEQUENCE_SPEC "%G"
#undef LINK_SPEC
#define LINK_SPEC "%{g*} %{map} %{save-temps} %{shared} %{v}"
#undef LIB_SPEC
#define LIB_SPEC ""
#undef ASM_SPEC
#define ASM_SPEC \
"%{mno-gnu-as:-N so -N vms_upcase -W DVLoc_off} %{mconstant-gp:-M const_gp} \
%{mauto-pic:-M no_plabel} %{source-listing:-ahdl=%b.lis}"
#undef ASM_OUTPUT_EXTERNAL_LIBCALL
#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
do { \
(*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0)); \
ASM_OUTPUT_TYPE_DIRECTIVE (FILE, XSTR (FUN, 0), "function"); \
} while (0)
/* Set the function to change the names of the division and modulus
functions. */
#undef TARGET_INIT_LIBFUNCS
#define TARGET_INIT_LIBFUNCS ia64_vms_init_libfuncs
#define NAME__MAIN "__gccmain"
#define SYMBOL__MAIN __gccmain
#define CTOR_LIST_BEGIN asm (".global\tLIB$INITIALIZE#\n"); \
STATIC func_ptr __CTOR_LIST__[1] \
__attribute__ ((__unused__, section(".ctors"), aligned(sizeof(func_ptr)))) \
= { (func_ptr) (-1) };
#undef INIT_SECTION_ASM_OP
#define INIT_SECTION_ASM_OP ".section\tLIB$INITIALIZE#,\"a\",@progbits"
#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
asm (SECTION_OP "\n\tdata4 @fptr(" #FUNC"#)\n"); \
FORCE_CODE_SECTION_ALIGN \
asm (TEXT_SECTION_ASM_OP);
#undef FINI_SECTION_ASM_OP
/* Maybe same as HPUX? Needs to be checked. */
#define JMP_BUF_SIZE (8 * 76)
#undef SUBTARGET_OPTIMIZATION_OPTIONS
#define SUBTARGET_OPTIMIZATION_OPTIONS \
{ OPT_LEVELS_ALL, OPT_fmerge_constants, NULL, 0 }
/* Define this to be nonzero if static stack checking is supported. */
#define STACK_CHECK_STATIC_BUILTIN 1
/* Minimum amount of stack required to recover from an anticipated stack
overflow detection. The default value conveys an estimate of the amount
of stack required to propagate an exception. */
#define STACK_CHECK_PROTECT (24 * 1024)
#undef ASM_OUTPUT_ALIGNED_DECL_COMMON
#define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \
ia64_vms_output_aligned_decl_common (FILE, DECL, NAME, SIZE, ALIGN)
#undef TARGET_VALID_POINTER_MODE
#define TARGET_VALID_POINTER_MODE ia64_vms_valid_pointer_mode
#undef TARGET_ASM_NAMED_SECTION
#define TARGET_ASM_NAMED_SECTION ia64_vms_elf_asm_named_section
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