281 lines
9.8 KiB
C
281 lines
9.8 KiB
C
/* Operating system specific defines to be used when targeting GCC for
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hosting on Windows NT 3.x, using a Unix style C library and tools,
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as distinct from winnt.h, which is used to build GCC for use with a
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windows style library and tool set and uses the Microsoft tools.
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Copyright (C) 1995-1998 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC 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 2, or (at your option)
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any later version.
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GNU CC 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 GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#define YES_UNDERSCORES
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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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#define DBX_DEBUGGING_INFO
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#define SDB_DEBUGGING_INFO
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#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
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#include "i386/gas.h"
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#include "dbxcoff.h"
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/* Augment TARGET_SWITCHES with the cygwin/win32 options. */
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#define MASK_WIN32 0x40000000 /* Use -lming32 interface */
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#define MASK_CYGWIN 0x20000000 /* Use -lcygwin interface */
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#define MASK_WINDOWS 0x10000000 /* Use windows interface */
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#define MASK_DLL 0x08000000 /* Use dll interface */
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#define MASK_NOP_FUN_DLLIMPORT 0x20000 /* Ignore dllimport for functions */
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#define TARGET_WIN32 (target_flags & MASK_WIN32)
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#define TARGET_CYGWIN (target_flags & MASK_CYGWIN)
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#define TARGET_WINDOWS (target_flags & MASK_WINDOWS)
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#define TARGET_DLL (target_flags & MASK_DLL)
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#define TARGET_NOP_FUN_DLLIMPORT (target_flags & MASK_NOP_FUN_DLLIMPORT)
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#undef SUBTARGET_SWITCHES
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#define SUBTARGET_SWITCHES \
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{ "win32", MASK_WIN32, "Use Mingw32 interface" }, \
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{ "cygwin", MASK_CYGWIN, "Use Cygwin interface" }, \
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{ "windows", MASK_WINDOWS, "Use bare Windows interface" }, \
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{ "dll", MASK_DLL, "Generate code for a DLL" }, \
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{ "nop-fun-dllimport", MASK_NOP_FUN_DLLIMPORT, "Ignore dllimport for functions" }, \
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{ "no-nop-fun-dllimport", MASK_NOP_FUN_DLLIMPORT, "" },
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES "-D_WIN32 \
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-DWINNT -D_X86_=1 -D__STDC__=1\
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-D__stdcall=__attribute__((__stdcall__)) \
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-D__cdecl=__attribute__((__cdecl__)) \
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-Asystem(winnt)"
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC "%{mdll:dllcrt0%O%s} %{!mdll: %{!mcygwin:mcrt0%O%s} \
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%{mcygwin:crt0%O%s} %{pg:gcrt0%O%s}}"
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#undef CPP_SPEC
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#define CPP_SPEC "%(cpp_cpu) %{posix:-D_POSIX_SOURCE} \
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%{!mcygwin:-iwithprefixbefore include/mingw32 -D__MINGW32__} \
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%{mcygwin:-D__CYGWIN32__ -D__CYGWIN__}"
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/* We have to dynamic link to get to the system DLLs. All of libc, libm and
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the Unix stuff is in cygwin.dll. The import library is called
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'libcygwin.a'. For Windows applications, include more libraries, but
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always include kernel32. We'd like to specific subsystem windows to
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ld, but that doesn't work just yet. */
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#undef LIB_SPEC
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#define LIB_SPEC "%{pg:-lgmon} \
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%{!mcygwin:-lmingw32 -lmoldname -lmsvcrt -lcrtdll} \
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%{mcygwin:-lcygwin} %{mwindows:-luser32 -lgdi32 -lcomdlg32} \
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-lkernel32 -ladvapi32 -lshell32"
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#define LINK_SPEC "%{mwindows:--subsystem windows} \
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%{mdll:--dll -e _DllMainCRTStartup@12}"
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#define SIZE_TYPE "unsigned int"
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#define PTRDIFF_TYPE "int"
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#define WCHAR_UNSIGNED 1
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#define WCHAR_TYPE_SIZE 16
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#define WCHAR_TYPE "short unsigned int"
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/* Currently we do not have the atexit() function,
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so take that from libgcc2.c */
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#define NEED_ATEXIT 1
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#define HAVE_ATEXIT 1
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#undef EXTRA_SECTIONS
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#define EXTRA_SECTIONS in_ctor, in_dtor
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#undef EXTRA_SECTION_FUNCTIONS
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#define EXTRA_SECTION_FUNCTIONS \
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CTOR_SECTION_FUNCTION \
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DTOR_SECTION_FUNCTION
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#define CTOR_SECTION_FUNCTION \
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void \
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ctor_section () \
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{ \
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if (in_section != in_ctor) \
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{ \
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fprintf (asm_out_file, "\t.section .ctor\n"); \
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in_section = in_ctor; \
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} \
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}
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#define DTOR_SECTION_FUNCTION \
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void \
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dtor_section () \
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{ \
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if (in_section != in_dtor) \
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{ \
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fprintf (asm_out_file, "\t.section .dtor\n"); \
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in_section = in_dtor; \
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} \
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}
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#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
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do { \
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ctor_section (); \
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fprintf (FILE, "%s\t", ASM_LONG); \
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assemble_name (FILE, NAME); \
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fprintf (FILE, "\n"); \
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} while (0)
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#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
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do { \
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dtor_section (); \
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fprintf (FILE, "%s\t", ASM_LONG); \
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assemble_name (FILE, NAME); \
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fprintf (FILE, "\n"); \
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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, if using PIC, mark a SYMBOL_REF for a non-global symbol
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so that we may access it directly in the GOT.
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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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#ifdef ENCODE_SECTION_INFO
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#undef ENCODE_SECTION_INFO
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#define ENCODE_SECTION_INFO(DECL) \
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do \
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{ \
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if (flag_pic) \
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{ \
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rtx rtl = (TREE_CODE_CLASS (TREE_CODE (DECL)) != 'd' \
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? TREE_CST_RTL (DECL) : DECL_RTL (DECL)); \
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SYMBOL_REF_FLAG (XEXP (rtl, 0)) \
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= (TREE_CODE_CLASS (TREE_CODE (DECL)) != 'd' \
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|| ! TREE_PUBLIC (DECL)); \
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} \
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if (TREE_CODE (DECL) == FUNCTION_DECL) \
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if (lookup_attribute ("stdcall", \
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TYPE_ATTRIBUTES (TREE_TYPE (DECL)))) \
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XEXP (DECL_RTL (DECL), 0) = \
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gen_rtx (SYMBOL_REF, Pmode, gen_stdcall_suffix (DECL)); \
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} \
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while (0)
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#endif
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/* This macro gets just the user-specified name
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out of the string in a SYMBOL_REF. Discard
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trailing @[NUM] encoded by ENCODE_SECTION_INFO.
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Do we need the stripping of leading '*'? */
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#undef STRIP_NAME_ENCODING
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#define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME) \
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do { \
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char *_p; \
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char *_name = ((SYMBOL_NAME) + ((SYMBOL_NAME)[0] == '*')); \
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for (_p = _name; *_p && *_p != '@'; ++_p) \
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; \
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if (*_p == '@') \
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{ \
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int _len = _p - _name; \
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(VAR) = (char *) alloca (_len + 1); \
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strncpy ((VAR), _name, _len); \
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(VAR)[_len] = '\0'; \
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} \
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else \
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(VAR) = _name; \
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} while (0)
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/* Emit code to check the stack when allocating more that 4000
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bytes in one go. */
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#define CHECK_STACK_LIMIT 4000
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/* By default, target has a 80387, uses IEEE compatible arithmetic,
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and returns float values in the 387 and needs stack probes */
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT \
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(MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_STACK_PROBE)
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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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/* Define this macro if in some cases global symbols from one translation
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unit may not be bound to undefined symbols in another translation unit
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without user intervention. For instance, under Microsoft Windows
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symbols must be explicitly imported from shared libraries (DLLs). */
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#define MULTIPLE_SYMBOL_SPACES
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#define UNIQUE_SECTION_P(DECL) DECL_ONE_ONLY (DECL)
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extern void i386_pe_unique_section ();
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#define UNIQUE_SECTION(DECL,RELOC) i386_pe_unique_section (DECL, RELOC)
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#define SUPPORTS_ONE_ONLY 1
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/* A C statement to output something to the assembler file to switch to section
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NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or
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NULL_TREE. Some target formats do not support arbitrary sections. Do not
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define this macro in such cases. */
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#undef ASM_OUTPUT_SECTION_NAME
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#define ASM_OUTPUT_SECTION_NAME(STREAM, DECL, NAME, RELOC) \
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do { \
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if ((DECL) && TREE_CODE (DECL) == FUNCTION_DECL) \
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fprintf (STREAM, "\t.section %s,\"x\"\n", (NAME)); \
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else if ((DECL) && DECL_READONLY_SECTION (DECL, RELOC)) \
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fprintf (STREAM, "\t.section %s,\"\"\n", (NAME)); \
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else \
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fprintf (STREAM, "\t.section %s,\"w\"\n", (NAME)); \
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/* Functions may have been compiled at various levels of \
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optimization so we can't use `same_size' here. Instead, \
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have the linker pick one. */ \
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if ((DECL) && DECL_ONE_ONLY (DECL)) \
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fprintf (STREAM, "\t.linkonce %s\n", \
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TREE_CODE (DECL) == FUNCTION_DECL \
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? "discard" : "same_size"); \
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} while (0)
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#undef ASM_COMMENT_START
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#define ASM_COMMENT_START " #"
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/* DWARF2 Unwinding doesn't work with exception handling yet. */
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#define DWARF2_UNWIND_INFO 0
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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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#define SUBTARGET_PROLOGUE \
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if (profile_flag \
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&& strcmp (IDENTIFIER_POINTER (DECL_NAME (current_function_decl)),\
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"main") == 0) \
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{ \
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rtx xops[1]; \
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xops[0] = gen_rtx_MEM (FUNCTION_MODE, \
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gen_rtx (SYMBOL_REF, Pmode, "_monstartup")); \
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if (do_rtl) \
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emit_call_insn (gen_rtx (CALL, VOIDmode, xops[0], const0_rtx)); \
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else \
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output_asm_insn (AS1 (call,%P1), xops); \
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}
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