1 /* Operating system specific defines to be used when targeting GCC for
2 hosting on Windows NT 3.x, using a Unix style C library and tools,
3 as distinct from winnt.h, which is used to build GCC for use with a
4 windows style library and tool set and uses the Microsoft tools.
5 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000
6 Free Software Foundation, Inc.
8 This file is part of GNU CC.
10 GNU CC is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2, or (at your option)
15 GNU CC is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with GNU CC; see the file COPYING. If not, write to
22 the Free Software Foundation, 59 Temple Place - Suite 330,
23 Boston, MA 02111-1307, USA. */
25 #define YES_UNDERSCORES
27 /* Enable parsing of #pragma pack(push,<n>) and #pragma pack(pop). */
28 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
30 #define DBX_DEBUGGING_INFO
31 #define SDB_DEBUGGING_INFO
32 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
37 /* Augment TARGET_SWITCHES with the cygwin/win32 options. */
38 #define MASK_WIN32 0x40000000 /* Use -lming32 interface */
39 #define MASK_CYGWIN 0x20000000 /* Use -lcygwin interface */
40 #define MASK_WINDOWS 0x10000000 /* Use windows interface */
41 #define MASK_DLL 0x08000000 /* Use dll interface */
42 #define MASK_NOP_FUN_DLLIMPORT 0x20000 /* Ignore dllimport for functions */
44 #define TARGET_WIN32 (target_flags & MASK_WIN32)
45 #define TARGET_CYGWIN (target_flags & MASK_CYGWIN)
46 #define TARGET_WINDOWS (target_flags & MASK_WINDOWS)
47 #define TARGET_DLL (target_flags & MASK_DLL)
48 #define TARGET_NOP_FUN_DLLIMPORT (target_flags & MASK_NOP_FUN_DLLIMPORT)
50 #undef SUBTARGET_SWITCHES
51 #define SUBTARGET_SWITCHES \
52 { "win32", MASK_WIN32, \
53 N_("Use Mingw32 interface") }, \
54 { "cygwin", MASK_CYGWIN, \
55 N_("Use Cygwin interface") }, \
56 { "windows", MASK_WINDOWS, \
57 N_("Use bare Windows interface") }, \
59 N_("Generate code for a DLL") }, \
60 { "nop-fun-dllimport", MASK_NOP_FUN_DLLIMPORT, \
61 N_("Ignore dllimport for functions") }, \
62 { "no-nop-fun-dllimport", MASK_NOP_FUN_DLLIMPORT, "" },
66 #define CPP_PREDEFINES "-D_WIN32 -DWINNT -D_X86_=1 \
67 -D__stdcall=__attribute__((__stdcall__)) \
68 -D__cdecl=__attribute__((__cdecl__)) \
73 #define STARTFILE_SPEC "%{mdll:dllcrt0%O%s} %{!mdll: %{!mcygwin:mcrt0%O%s} \
74 %{mcygwin:crt0%O%s} %{pg:gcrt0%O%s}}"
77 #define CPP_SPEC "%(cpp_cpu) %{posix:-D_POSIX_SOURCE} \
78 %{!mcygwin:-iwithprefixbefore include/mingw32 -D__MINGW32__} \
79 %{mcygwin:-D__CYGWIN32__ -D__CYGWIN__}"
81 /* We have to dynamic link to get to the system DLLs. All of libc, libm and
82 the Unix stuff is in cygwin.dll. The import library is called
83 'libcygwin.a'. For Windows applications, include more libraries, but
84 always include kernel32. We'd like to specific subsystem windows to
85 ld, but that doesn't work just yet. */
88 #define LIB_SPEC "%{pg:-lgmon} \
89 %{!mcygwin:-lmingw32 -lmoldname -lmsvcrt -lcrtdll} \
90 %{mcygwin:-lcygwin} %{mwindows:-luser32 -lgdi32 -lcomdlg32} \
91 -lkernel32 -ladvapi32 -lshell32"
93 #define LINK_SPEC "%{mwindows:--subsystem windows} \
94 %{mdll:--dll -e _DllMainCRTStartup@12}"
96 #define SIZE_TYPE "unsigned int"
97 #define PTRDIFF_TYPE "int"
98 #define WCHAR_UNSIGNED 1
99 #define WCHAR_TYPE_SIZE 16
100 #define WCHAR_TYPE "short unsigned int"
101 /* Currently we do not have the atexit() function,
102 so take that from libgcc2.c */
104 #define NEED_ATEXIT 1
106 #undef EXTRA_SECTIONS
107 #define EXTRA_SECTIONS in_ctor, in_dtor
109 #undef EXTRA_SECTION_FUNCTIONS
110 #define EXTRA_SECTION_FUNCTIONS \
111 CTOR_SECTION_FUNCTION \
112 DTOR_SECTION_FUNCTION
114 #define CTOR_SECTION_FUNCTION \
118 if (in_section != in_ctor) \
120 fprintf (asm_out_file, "\t.section .ctor\n"); \
121 in_section = in_ctor; \
125 #define DTOR_SECTION_FUNCTION \
129 if (in_section != in_dtor) \
131 fprintf (asm_out_file, "\t.section .dtor\n"); \
132 in_section = in_dtor; \
136 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
139 fputs (ASM_LONG, FILE); \
140 assemble_name (FILE, NAME); \
141 fprintf (FILE, "\n"); \
144 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
147 fputs (ASM_LONG, FILE); \
148 assemble_name (FILE, NAME); \
149 fprintf (FILE, "\n"); \
152 /* Define this macro if references to a symbol must be treated
153 differently depending on something about the variable or
154 function named by the symbol (such as what section it is in).
156 On i386, if using PIC, mark a SYMBOL_REF for a non-global symbol
157 so that we may access it directly in the GOT.
159 On i386 running Windows NT, modify the assembler name with a suffix
160 consisting of an atsign (@) followed by string of digits that represents
161 the number of bytes of arguments passed to the function, if it has the
162 attribute STDCALL. */
164 #ifdef ENCODE_SECTION_INFO
165 #undef ENCODE_SECTION_INFO
166 #define ENCODE_SECTION_INFO(DECL) \
171 rtx rtl = (TREE_CODE_CLASS (TREE_CODE (DECL)) != 'd' \
172 ? TREE_CST_RTL (DECL) : DECL_RTL (DECL)); \
173 SYMBOL_REF_FLAG (XEXP (rtl, 0)) \
174 = (TREE_CODE_CLASS (TREE_CODE (DECL)) != 'd' \
175 || ! TREE_PUBLIC (DECL)); \
177 if (TREE_CODE (DECL) == FUNCTION_DECL) \
178 if (lookup_attribute ("stdcall", \
179 TYPE_ATTRIBUTES (TREE_TYPE (DECL)))) \
180 XEXP (DECL_RTL (DECL), 0) = \
181 gen_rtx (SYMBOL_REF, Pmode, gen_stdcall_suffix (DECL)); \
186 /* This macro gets just the user-specified name
187 out of the string in a SYMBOL_REF. Discard
188 trailing @[NUM] encoded by ENCODE_SECTION_INFO.
189 Do we need the stripping of leading '*'? */
190 #undef STRIP_NAME_ENCODING
191 #define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME) \
194 const char *_name = ((SYMBOL_NAME) + ((SYMBOL_NAME)[0] == '*')); \
195 for (_p = _name; *_p && *_p != '@'; ++_p) \
199 int _len = _p - _name; \
200 char *_new_name = (char *) alloca (_len + 1); \
201 strncpy (_new_name, _name, _len); \
202 _new_name[_len] = '\0'; \
210 /* Emit code to check the stack when allocating more that 4000
213 #define CHECK_STACK_LIMIT 4000
215 /* By default, target has a 80387, uses IEEE compatible arithmetic,
216 and returns float values in the 387 and needs stack probes */
217 #undef TARGET_SUBTARGET_DEFAULT
219 #define TARGET_SUBTARGET_DEFAULT \
220 (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_STACK_PROBE)
222 /* This is how to output an assembler line
223 that says to advance the location counter
224 to a multiple of 2**LOG bytes. */
226 #undef ASM_OUTPUT_ALIGN
227 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
228 if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
230 /* Define this macro if in some cases global symbols from one translation
231 unit may not be bound to undefined symbols in another translation unit
232 without user intervention. For instance, under Microsoft Windows
233 symbols must be explicitly imported from shared libraries (DLLs). */
234 #define MULTIPLE_SYMBOL_SPACES
236 #define UNIQUE_SECTION_P(DECL) DECL_ONE_ONLY (DECL)
237 extern void i386_pe_unique_section ();
238 #define UNIQUE_SECTION(DECL,RELOC) i386_pe_unique_section (DECL, RELOC)
240 #define SUPPORTS_ONE_ONLY 1
242 /* A C statement to output something to the assembler file to switch to section
243 NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or
244 NULL_TREE. Some target formats do not support arbitrary sections. Do not
245 define this macro in such cases. */
246 #undef ASM_OUTPUT_SECTION_NAME
247 #define ASM_OUTPUT_SECTION_NAME(STREAM, DECL, NAME, RELOC) \
249 if ((DECL) && TREE_CODE (DECL) == FUNCTION_DECL) \
250 fprintf (STREAM, "\t.section %s,\"x\"\n", (NAME)); \
251 else if ((DECL) && DECL_READONLY_SECTION (DECL, RELOC)) \
252 fprintf (STREAM, "\t.section %s,\"\"\n", (NAME)); \
254 fprintf (STREAM, "\t.section %s,\"w\"\n", (NAME)); \
255 /* Functions may have been compiled at various levels of \
256 optimization so we can't use `same_size' here. Instead, \
257 have the linker pick one. */ \
258 if ((DECL) && DECL_ONE_ONLY (DECL)) \
259 fprintf (STREAM, "\t.linkonce %s\n", \
260 TREE_CODE (DECL) == FUNCTION_DECL \
261 ? "discard" : "same_size"); \
264 #undef ASM_COMMENT_START
265 #define ASM_COMMENT_START " #"
267 /* DWARF2 Unwinding doesn't work with exception handling yet. */
268 #define DWARF2_UNWIND_INFO 0
270 /* Don't assume anything about the header files. */
271 #define NO_IMPLICIT_EXTERN_C
273 #define SUBTARGET_PROLOGUE \
275 && MAIN_NAME_P (DECL_NAME (current_function_decl)) \
278 xops[0] = gen_rtx_MEM (FUNCTION_MODE, \
279 gen_rtx (SYMBOL_REF, Pmode, "_monstartup")); \
280 emit_call_insn (gen_rtx (CALL, VOIDmode, xops[0], const0_rtx)); \