449 lines
15 KiB
C
449 lines
15 KiB
C
/* Operating system specific defines to be used when targeting GCC for
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hosting on Windows32, using a Unix style C library and tools.
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Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
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2004, 2005, 2007, 2008, 2009, 2010
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Free Software Foundation, Inc.
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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 DBX_DEBUGGING_INFO 1
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#define SDB_DEBUGGING_INFO 1
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#if TARGET_64BIT_DEFAULT || defined (HAVE_GAS_PE_SECREL32_RELOC)
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#define DWARF2_DEBUGGING_INFO 1
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#endif
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#undef PREFERRED_DEBUGGING_TYPE
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#if (DWARF2_DEBUGGING_INFO)
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#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
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#else
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#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
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#endif
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#undef TARGET_64BIT_MS_ABI
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#define TARGET_64BIT_MS_ABI (!cfun ? ix86_abi == MS_ABI : TARGET_64BIT && cfun->machine->call_abi == MS_ABI)
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#undef DEFAULT_ABI
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#define DEFAULT_ABI (TARGET_64BIT ? MS_ABI : SYSV_ABI)
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#if ! defined (USE_MINGW64_LEADING_UNDERSCORES)
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#undef USER_LABEL_PREFIX
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#define USER_LABEL_PREFIX (TARGET_64BIT ? "" : "_")
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#undef LOCAL_LABEL_PREFIX
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#define LOCAL_LABEL_PREFIX (TARGET_64BIT ? "." : "")
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#undef ASM_GENERATE_INTERNAL_LABEL
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#define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER) \
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sprintf ((BUF), "*%s%s%ld", LOCAL_LABEL_PREFIX, \
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(PREFIX), (long)(NUMBER))
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#undef LPREFIX
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#define LPREFIX (TARGET_64BIT ? ".L" : "L")
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#endif
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#undef DBX_REGISTER_NUMBER
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#define DBX_REGISTER_NUMBER(n) \
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(TARGET_64BIT ? dbx64_register_map[n] \
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: (write_symbols == DWARF2_DEBUG \
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? svr4_dbx_register_map[n] : dbx_register_map[n]))
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/* Map gcc register number to DWARF 2 CFA column number. For 32 bit
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target, always use the svr4_dbx_register_map for DWARF .eh_frame
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even if we don't use DWARF .debug_frame. */
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#undef DWARF_FRAME_REGNUM
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#define DWARF_FRAME_REGNUM(n) \
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(TARGET_64BIT ? dbx64_register_map[(n)] \
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: svr4_dbx_register_map[(n)])
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#ifdef HAVE_GAS_PE_SECREL32_RELOC
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/* Use section relative relocations for debugging offsets. Unlike
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other targets that fake this by putting the section VMA at 0, PE
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won't allow it. */
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#define ASM_OUTPUT_DWARF_OFFSET(FILE, SIZE, LABEL, SECTION) \
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do { \
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switch (SIZE) \
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{ \
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case 4: \
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fputs ("\t.secrel32\t", FILE); \
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assemble_name (FILE, LABEL); \
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break; \
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case 8: \
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/* This is a hack. There is no 64-bit section relative \
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relocation. However, the COFF format also does not \
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support 64-bit file offsets; 64-bit applications are \
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limited to 32-bits of code+data in any one module. \
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Fake the 64-bit offset by zero-extending it. */ \
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fputs ("\t.secrel32\t", FILE); \
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assemble_name (FILE, LABEL); \
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fputs ("\n\t.long\t0", FILE); \
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break; \
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default: \
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gcc_unreachable (); \
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} \
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} while (0)
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#endif
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#define TARGET_EXECUTABLE_SUFFIX ".exe"
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#include <stdio.h>
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#define TARGET_OS_CPP_BUILTINS() \
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do \
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{ \
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if (!TARGET_64BIT) \
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builtin_define ("_X86_=1"); \
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builtin_assert ("system=winnt"); \
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builtin_define ("__stdcall=__attribute__((__stdcall__))"); \
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builtin_define ("__fastcall=__attribute__((__fastcall__))"); \
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builtin_define ("__cdecl=__attribute__((__cdecl__))"); \
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if (!flag_iso) \
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{ \
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builtin_define ("_stdcall=__attribute__((__stdcall__))"); \
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builtin_define ("_fastcall=__attribute__((__fastcall__))"); \
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builtin_define ("_cdecl=__attribute__((__cdecl__))"); \
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} \
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/* Even though linkonce works with static libs, this is needed \
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to compare typeinfo symbols across dll boundaries. */ \
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builtin_define ("__GXX_MERGED_TYPEINFO_NAMES=0"); \
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builtin_define ("__GXX_TYPEINFO_EQUALITY_INLINE=0"); \
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EXTRA_OS_CPP_BUILTINS (); \
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} \
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while (0)
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/* Get tree.c to declare a target-specific specialization of
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merge_decl_attributes. */
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#define TARGET_DLLIMPORT_DECL_ATTRIBUTES 1
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/* This macro defines names of additional specifications to put in the specs
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that can be used in various specifications like CC1_SPEC. Its definition
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is an initializer with a subgrouping for each command option.
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Each subgrouping contains a string constant, that defines the
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specification name, and a string constant that used by the GCC driver
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program.
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Do not define this macro if it does not need to do anything. */
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#undef SUBTARGET_EXTRA_SPECS
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#define SUBTARGET_EXTRA_SPECS \
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{ "mingw_include_path", DEFAULT_TARGET_MACHINE }
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#undef MATH_LIBRARY
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#define MATH_LIBRARY ""
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#define SIZE_TYPE (TARGET_64BIT ? "long long unsigned int" : "unsigned int")
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#define PTRDIFF_TYPE (TARGET_64BIT ? "long long int" : "int")
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#define WCHAR_TYPE_SIZE 16
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#define WCHAR_TYPE "short unsigned int"
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/* Windows64 continues to use a 32-bit long type. */
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#undef LONG_TYPE_SIZE
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#define LONG_TYPE_SIZE 32
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/* Enable parsing of #pragma pack(push,<n>) and #pragma pack(pop). */
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#define HANDLE_PRAGMA_PACK_PUSH_POP 1
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union tree_node;
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#define TREE union tree_node *
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#define drectve_section() \
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(fprintf (asm_out_file, "\t.section .drectve\n"), \
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in_section = NULL)
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/* Older versions of gas don't handle 'r' as data.
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Explicitly set data flag with 'd'. */
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#define READONLY_DATA_SECTION_ASM_OP "\t.section .rdata,\"dr\""
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/* Don't allow flag_pic to propagate since gas may produce invalid code
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otherwise. */
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#undef SUBTARGET_OVERRIDE_OPTIONS
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#define SUBTARGET_OVERRIDE_OPTIONS \
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do { \
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if (TARGET_64BIT && flag_pic != 1) \
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{ \
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if (flag_pic > 1) \
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warning (0, \
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"-fPIC ignored for target (all code is position independent)"\
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); \
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flag_pic = 1; \
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} \
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else if (!TARGET_64BIT && flag_pic) \
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{ \
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warning (0, "-f%s ignored for target (all code is position independent)",\
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(flag_pic > 1) ? "PIC" : "pic"); \
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flag_pic = 0; \
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} \
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} while (0) \
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/* Define this macro if references to a symbol must be treated
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differently depending on something about the variable or
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function named by the symbol (such as what section it is in).
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On i386 running Windows NT, modify the assembler name with a suffix
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consisting of an atsign (@) followed by string of digits that represents
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the number of bytes of arguments passed to the function, if it has the
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attribute STDCALL.
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In addition, we must mark dll symbols specially. Definitions of
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dllexport'd objects install some info in the .drectve section.
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References to dllimport'd objects are fetched indirectly via
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_imp__. If both are declared, dllexport overrides. This is also
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needed to implement one-only vtables: they go into their own
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section and we need to set DECL_SECTION_NAME so we do that here.
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Note that we can be called twice on the same decl. */
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#define SUBTARGET_ENCODE_SECTION_INFO i386_pe_encode_section_info
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/* Output a common block. */
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#undef ASM_OUTPUT_ALIGNED_DECL_COMMON
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#define ASM_OUTPUT_ALIGNED_DECL_COMMON \
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i386_pe_asm_output_aligned_decl_common
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/* Output the label for an initialized variable. */
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#undef ASM_DECLARE_OBJECT_NAME
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#define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \
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do { \
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i386_pe_maybe_record_exported_symbol (DECL, NAME, 1); \
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ASM_OUTPUT_LABEL ((STREAM), (NAME)); \
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} while (0)
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/* Output a reference to a label. Fastcall function symbols
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keep their '@' prefix, while other symbols are prefixed
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with user_label_prefix. */
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#undef ASM_OUTPUT_LABELREF
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#define ASM_OUTPUT_LABELREF(STREAM, NAME) \
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do { \
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if ((NAME)[0] != FASTCALL_PREFIX) \
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fputs (user_label_prefix, (STREAM)); \
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fputs ((NAME), (STREAM)); \
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} while (0)
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/* Emit code to check the stack when allocating more than 4000
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bytes in one go. */
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#define CHECK_STACK_LIMIT 4000
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#undef STACK_BOUNDARY
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#define STACK_BOUNDARY (ix86_abi == MS_ABI ? 128 : BITS_PER_WORD)
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/* By default, target has a 80387, uses IEEE compatible arithmetic,
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returns float values in the 387 and needs stack probes.
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We also align doubles to 64-bits for MSVC default compatibility. */
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#undef TARGET_SUBTARGET_DEFAULT
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#define TARGET_SUBTARGET_DEFAULT \
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(MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS \
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| MASK_STACK_PROBE | MASK_ALIGN_DOUBLE)
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#undef TARGET_SUBTARGET64_DEFAULT
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#define TARGET_SUBTARGET64_DEFAULT \
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MASK_128BIT_LONG_DOUBLE
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/* This is how to output an assembler line
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that says to advance the location counter
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to a multiple of 2**LOG bytes. */
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#undef ASM_OUTPUT_ALIGN
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#define ASM_OUTPUT_ALIGN(FILE,LOG) \
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if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
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/* Windows uses explicit import from shared libraries. */
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#define MULTIPLE_SYMBOL_SPACES 1
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#define TARGET_ASM_UNIQUE_SECTION i386_pe_unique_section
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#define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
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#define SUPPORTS_ONE_ONLY 1
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/* Switch into a generic section. */
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#define TARGET_ASM_NAMED_SECTION i386_pe_asm_named_section
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/* Select attributes for named sections. */
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#define TARGET_SECTION_TYPE_FLAGS i386_pe_section_type_flags
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/* Write the extra assembler code needed to declare a function
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properly. If we are generating SDB debugging information, this
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will happen automatically, so we only need to handle other cases. */
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#undef ASM_DECLARE_FUNCTION_NAME
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#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
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do \
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{ \
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i386_pe_maybe_record_exported_symbol (DECL, NAME, 0); \
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if (write_symbols != SDB_DEBUG) \
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i386_pe_declare_function_type (FILE, NAME, TREE_PUBLIC (DECL)); \
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ASM_OUTPUT_LABEL (FILE, NAME); \
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} \
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while (0)
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/* Add an external function to the list of functions to be declared at
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the end of the file. */
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#define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \
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do \
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{ \
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if (TREE_CODE (DECL) == FUNCTION_DECL) \
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i386_pe_record_external_function ((DECL), (NAME)); \
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} \
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while (0)
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/* Declare the type properly for any external libcall. */
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#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
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i386_pe_declare_function_type (FILE, XSTR (FUN, 0), 1)
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/* This says out to put a global symbol in the BSS section. */
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#undef ASM_OUTPUT_ALIGNED_BSS
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#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
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asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
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/* Output function declarations at the end of the file. */
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#undef TARGET_ASM_FILE_END
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#define TARGET_ASM_FILE_END i386_pe_file_end
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#undef ASM_COMMENT_START
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#define ASM_COMMENT_START " #"
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#ifndef DWARF2_UNWIND_INFO
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/* If configured with --disable-sjlj-exceptions, use DWARF2, else
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default to SJLJ. */
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#if (defined (CONFIG_SJLJ_EXCEPTIONS) && !CONFIG_SJLJ_EXCEPTIONS)
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/* The logic of this #if must be kept synchronised with the logic
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for selecting the tmake_eh_file fragment in config.gcc. */
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#define DWARF2_UNWIND_INFO 1
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/* If multilib is selected break build as sjlj is required. */
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#if defined (TARGET_BI_ARCH)
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#error For 64-bit windows and 32-bit based multilib version of gcc just SJLJ exceptions are supported.
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#endif
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#else
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#define DWARF2_UNWIND_INFO 0
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#endif
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#endif
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/* Don't assume anything about the header files. */
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#define NO_IMPLICIT_EXTERN_C
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#undef PROFILE_HOOK
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#define PROFILE_HOOK(LABEL) \
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if (MAIN_NAME_P (DECL_NAME (current_function_decl))) \
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{ \
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emit_call_insn (gen_rtx_CALL (VOIDmode, \
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gen_rtx_MEM (FUNCTION_MODE, \
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gen_rtx_SYMBOL_REF (Pmode, "_monstartup")), \
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const0_rtx)); \
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}
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/* Java Native Interface (JNI) methods on Win32 are invoked using the
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stdcall calling convention. */
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#undef MODIFY_JNI_METHOD_CALL
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#define MODIFY_JNI_METHOD_CALL(MDECL) \
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build_type_attribute_variant ((MDECL), \
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build_tree_list (get_identifier ("stdcall"), \
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NULL))
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/* For Win32 ABI compatibility */
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#undef DEFAULT_PCC_STRUCT_RETURN
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#define DEFAULT_PCC_STRUCT_RETURN 0
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/* MSVC returns aggregate types of up to 8 bytes via registers.
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See i386.c:ix86_return_in_memory. */
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#undef MS_AGGREGATE_RETURN
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#define MS_AGGREGATE_RETURN 1
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/* Biggest alignment supported by the object file format of this
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machine. Use this macro to limit the alignment which can be
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specified using the `__attribute__ ((aligned (N)))' construct. If
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not defined, the default value is `BIGGEST_ALIGNMENT'. */
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/* IMAGE_SCN_ALIGN_8192BYTES is the largest section alignment flag
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specified in the PECOFF60 spec. Native MS compiler also limits
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user-specified alignment to 8192 bytes. */
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#undef MAX_OFILE_ALIGNMENT
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#define MAX_OFILE_ALIGNMENT (8192 * 8)
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/* BIGGEST_FIELD_ALIGNMENT macro is used directly by libobjc, There, we
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align internal doubles in structures on dword boundaries. Otherwise,
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support vector modes using ADJUST_FIELD_ALIGN, defined in i386.h. */
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#ifdef IN_TARGET_LIBS
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#undef BIGGEST_FIELD_ALIGNMENT
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#define BIGGEST_FIELD_ALIGNMENT 64
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#endif
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/* A bit-field declared as `int' forces `int' alignment for the struct. */
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#undef PCC_BITFIELD_TYPE_MATTERS
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#define PCC_BITFIELD_TYPE_MATTERS 1
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#define GROUP_BITFIELDS_BY_ALIGN TYPE_NATIVE(rec)
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/* Enable alias attribute support. */
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#ifndef SET_ASM_OP
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#define SET_ASM_OP "\t.set\t"
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#endif
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/* This implements the `alias' attribute, keeping any stdcall or
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fastcall decoration. */
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#undef ASM_OUTPUT_DEF_FROM_DECLS
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#define ASM_OUTPUT_DEF_FROM_DECLS(STREAM, DECL, TARGET) \
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do \
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{ \
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const char *alias \
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= IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \
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i386_pe_maybe_record_exported_symbol (DECL, alias, 0); \
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if (TREE_CODE (DECL) == FUNCTION_DECL) \
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i386_pe_declare_function_type (STREAM, alias, \
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TREE_PUBLIC (DECL)); \
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ASM_OUTPUT_DEF (STREAM, alias, IDENTIFIER_POINTER (TARGET)); \
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} while (0)
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/* GNU as supports weak symbols on PECOFF. */
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#ifdef HAVE_GAS_WEAK
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#define ASM_WEAKEN_LABEL(FILE, NAME) \
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do \
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{ \
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fputs ("\t.weak\t", (FILE)); \
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assemble_name ((FILE), (NAME)); \
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fputc ('\n', (FILE)); \
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} \
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while (0)
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#endif /* HAVE_GAS_WEAK */
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/* FIXME: SUPPORTS_WEAK && TARGET_HAVE_NAMED_SECTIONS is true,
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but for .jcr section to work we also need crtbegin and crtend
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objects. */
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#define TARGET_USE_JCR_SECTION 1
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/* Decide whether it is safe to use a local alias for a virtual function
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when constructing thunks. */
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#undef TARGET_USE_LOCAL_THUNK_ALIAS_P
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#define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) (!DECL_ONE_ONLY (DECL))
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#define SUBTARGET_ATTRIBUTE_TABLE \
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{ "selectany", 0, 0, true, false, false, ix86_handle_selectany_attribute }
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/* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */
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/* mcount() does not need a counter variable. */
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#undef NO_PROFILE_COUNTERS
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#define NO_PROFILE_COUNTERS 1
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#define TARGET_VALID_DLLIMPORT_ATTRIBUTE_P i386_pe_valid_dllimport_attribute_p
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#define TARGET_CXX_ADJUST_CLASS_AT_DEFINITION i386_pe_adjust_class_at_definition
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#define TARGET_MANGLE_DECL_ASSEMBLER_NAME i386_pe_mangle_decl_assembler_name
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#undef TREE
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#ifndef BUFSIZ
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# undef FILE
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#endif
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