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157 lines
5.4 KiB
C
157 lines
5.4 KiB
C
/* Definitions of target machine GNU compiler. IA64-VMS version.
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Copyright (C) 2003-2013 Free Software Foundation, Inc.
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Contributed by Douglas B Rupp (rupp@gnat.com).
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#define OBJECT_FORMAT_ELF
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#define SUBTARGET_OS_CPP_BUILTINS() \
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do { \
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builtin_define ("__IA64"); \
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builtin_define ("__IEEE_FLOAT"); \
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} while (0)
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/* Need .debug_line info generated from gcc and gas. */
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT (MASK_DWARF2_ASM | MASK_GNU_AS)
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#undef MAX_OFILE_ALIGNMENT
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#define MAX_OFILE_ALIGNMENT 524288 /* 8 x 2^16 by DEC Ada Test CD40VRA */
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/* Widest floating-point type efficiently supported by hardware and OS. */
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#undef WIDEST_HARDWARE_FP_SIZE
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#define WIDEST_HARDWARE_FP_SIZE 64
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/* The structure return address arrives as an "argument" on VMS. */
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#undef PCC_STATIC_STRUCT_RETURN
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/* Turn on VMS specific Dwarf2 features. */
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#define VMS_DEBUGGING_INFO 1
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#define ASM_OUTPUT_DWARF_VMS_DELTA(FILE,SIZE,LABEL1,LABEL2) \
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do { \
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fprintf (FILE, "\tdata4.ua\t@slotcount("); \
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assemble_name (FILE, LABEL1); \
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fprintf (FILE, "-"); \
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assemble_name (FILE, LABEL2); \
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fprintf (FILE, ")"); \
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} while (0)
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC "%{!shared:crt0.o%s crtbegin.o%s} \
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%{!static:%{shared:crtinitS.o%s crtbeginS.o%s}}"
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC "%{!shared:crtend.o%s} %{!static:%{shared:crtendS.o%s}}"
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#define LINK_GCC_C_SEQUENCE_SPEC "%G"
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#undef LINK_SPEC
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#define LINK_SPEC "%{g0} %{g*:-g} %{map} %{save-temps} %{shared} %{v}"
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#undef LIB_SPEC
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#define LIB_SPEC ""
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#undef ASM_SPEC
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#define ASM_SPEC \
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"%{mno-gnu-as:-N so -N vms_upcase -W DVLoc_off} %{mconstant-gp:-M const_gp} \
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%{mauto-pic:-M no_plabel} %{source-listing:-ahdl=%b.lis}"
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#undef ASM_OUTPUT_EXTERNAL_LIBCALL
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#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
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do { \
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(*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0)); \
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ASM_OUTPUT_TYPE_DIRECTIVE (FILE, XSTR (FUN, 0), "function"); \
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} while (0)
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/* Set the function to change the names of the division and modulus
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functions. */
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#undef TARGET_INIT_LIBFUNCS
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#define TARGET_INIT_LIBFUNCS ia64_vms_init_libfuncs
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#define CTOR_LIST_BEGIN asm (".global\tLIB$INITIALIZE#\n"); \
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STATIC func_ptr __CTOR_LIST__[1] \
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__attribute__ ((__unused__, section(".ctors"), aligned(sizeof(func_ptr)))) \
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= { (func_ptr) (-1) };
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#undef INIT_SECTION_ASM_OP
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#define INIT_SECTION_ASM_OP ".section\tLIB$INITIALIZE#,\"a\",@progbits"
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#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
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asm (SECTION_OP "\n\tdata4 @fptr(" #FUNC"#)\n"); \
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FORCE_CODE_SECTION_ALIGN \
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asm (TEXT_SECTION_ASM_OP);
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#undef FINI_SECTION_ASM_OP
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/* Maybe same as HPUX? Needs to be checked. */
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#define JMP_BUF_SIZE (8 * 76)
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#undef SUBTARGET_OPTIMIZATION_OPTIONS
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#define SUBTARGET_OPTIMIZATION_OPTIONS \
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{ OPT_LEVELS_ALL, OPT_fmerge_constants, NULL, 0 }
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/* Define this to be nonzero if static stack checking is supported. */
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#define STACK_CHECK_STATIC_BUILTIN 1
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/* Minimum amount of stack required to recover from an anticipated stack
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overflow detection. The default value conveys an estimate of the amount
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of stack required to propagate an exception. */
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#define STACK_CHECK_PROTECT (24 * 1024)
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#undef ASM_OUTPUT_ALIGNED_DECL_COMMON
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#define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \
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ia64_vms_output_aligned_decl_common (FILE, DECL, NAME, SIZE, ALIGN)
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#undef TARGET_VALID_POINTER_MODE
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#define TARGET_VALID_POINTER_MODE ia64_vms_valid_pointer_mode
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/* Define this macro if it is advisable to hold scalars in registers
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in a wider mode than that declared by the program. In such cases,
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the value is constrained to be within the bounds of the declared
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type, but kept valid in the wider mode. The signedness of the
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extension may differ from that of the type.
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For ia64, we always store objects in a full register. 32-bit integers
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are always sign-extended, but smaller objects retain their signedness. */
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#undef PROMOTE_MODE
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#define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \
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if (GET_MODE_CLASS (MODE) == MODE_INT \
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&& GET_MODE_SIZE (MODE) < UNITS_PER_WORD) \
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{ \
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if ((MODE) == SImode) \
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(UNSIGNEDP) = 0; \
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(MODE) = DImode; \
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}
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#undef TARGET_PROMOTE_FUNCTION_MODE
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#define TARGET_PROMOTE_FUNCTION_MODE default_promote_function_mode_always_promote
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/* Code is always in P0/P1 (lower 32 bit addresses) on VMS. */
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#undef CASE_VECTOR_MODE
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#define CASE_VECTOR_MODE SImode
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/* IA64 VMS doesn't fully support COMDAT sections. */
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#define SUPPORTS_ONE_ONLY 0
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/* Default values for _CRTL_VER and _VMS_VER. */
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#define VMS_DEFAULT_CRTL_VER 80300000
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#define VMS_DEFAULT_VMS_VER 80300000
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