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gcc.gnu.org Git - gcc.git/blob - gcc/config/i386/cygwin32.h
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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 Free Software Foundation, Inc.
7 This file is part of GNU CC.
9 GNU CC is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2, or (at your option)
14 GNU CC is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with GNU CC; see the file COPYING. If not, write to
21 the Free Software Foundation, 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
25 #define YES_UNDERSCORES
27 #define DBX_DEBUGGING_INFO
28 #define SDB_DEBUGGING_INFO
29 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
38 #define CPP_PREDEFINES "-Di386 -D_WIN32 \
39 -D__CYGWIN32__ -DWINNT -D_X86_=1 -D__STDC__=1\
40 -D__stdcall=__attribute__((__stdcall__)) \
41 -D__cdecl=__attribute__((__cdecl__)) \
42 -Asystem(winnt) -Acpu(i386) -Amachine(i386)"
45 #define CPP_SPEC "-remap %(cpp_cpu) %[cpp_cpu] %{posix:-D_POSIX_SOURCE}"
47 /* We have to dynamic link to get to the system DLLs. All of libc, libm and
48 the Unix stuff is in cygwin.dll. The import library is called
49 'libcygwin.a'. For Windows applications, include more libraries, but
50 always include kernel32. We'd like to specific subsystem windows to
51 ld, but that doesn't work just yet. */
54 #define LIB_SPEC "-lcygwin %{mwindows:-luser32 -lgdi32 -lcomdlg32} -lkernel32 \
57 #define LINK_SPEC "%{mwindows:--subsystem windows}"
59 /* Normally, -lgcc is not needed since everything in it is in the DLL, but we
60 want to allow things to be added to it when installing new versions of
61 GCC without making a new CYGWIN.DLL, so we leave it. */
64 #define STARTFILE_SPEC "crt0%O%s"
66 #define SIZE_TYPE "unsigned int"
67 #define PTRDIFF_TYPE "int"
68 #define WCHAR_UNSIGNED 1
69 #define WCHAR_TYPE_SIZE 16
70 #define WCHAR_TYPE "short unsigned int"
74 #define EXTRA_SECTIONS in_ctor, in_dtor
76 #undef EXTRA_SECTION_FUNCTIONS
77 #define EXTRA_SECTION_FUNCTIONS \
78 CTOR_SECTION_FUNCTION \
81 #define CTOR_SECTION_FUNCTION \
85 if (in_section != in_ctor) \
87 fprintf (asm_out_file, "\t.section .ctor\n"); \
88 in_section = in_ctor; \
92 #define DTOR_SECTION_FUNCTION \
96 if (in_section != in_dtor) \
98 fprintf (asm_out_file, "\t.section .dtor\n"); \
99 in_section = in_dtor; \
103 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
106 fprintf (FILE, "%s\t", ASM_LONG); \
107 assemble_name (FILE, NAME); \
108 fprintf (FILE, "\n"); \
111 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
114 fprintf (FILE, "%s\t", ASM_LONG); \
115 assemble_name (FILE, NAME); \
116 fprintf (FILE, "\n"); \
119 /* Define this macro if references to a symbol must be treated
120 differently depending on something about the variable or
121 function named by the symbol (such as what section it is in).
123 On i386, if using PIC, mark a SYMBOL_REF for a non-global symbol
124 so that we may access it directly in the GOT.
126 On i386 running Windows NT, modify the assembler name with a suffix
127 consisting of an atsign (@) followed by string of digits that represents
128 the number of bytes of arguments passed to the function, if it has the
129 attribute STDCALL. */
131 #ifdef ENCODE_SECTION_INFO
132 #undef ENCODE_SECTION_INFO
133 #define ENCODE_SECTION_INFO(DECL) \
138 rtx rtl = (TREE_CODE_CLASS (TREE_CODE (DECL)) != 'd' \
139 ? TREE_CST_RTL (DECL) : DECL_RTL (DECL)); \
140 SYMBOL_REF_FLAG (XEXP (rtl, 0)) \
141 = (TREE_CODE_CLASS (TREE_CODE (DECL)) != 'd' \
142 || ! TREE_PUBLIC (DECL)); \
144 if (TREE_CODE (DECL) == FUNCTION_DECL) \
145 if (lookup_attribute ("stdcall", \
146 TYPE_ATTRIBUTES (TREE_TYPE (DECL)))) \
147 XEXP (DECL_RTL (DECL), 0) = \
148 gen_rtx (SYMBOL_REF, Pmode, gen_stdcall_suffix (DECL)); \
153 /* Emit code to check the stack when allocating more that 4000
156 #define CHECK_STACK_LIMIT 4000
158 /* By default, target has a 80387, uses IEEE compatible arithmetic,
159 and returns float values in the 387 and needs stack probes */
160 #undef TARGET_DEFAULT
162 #define TARGET_DEFAULT \
163 (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_STACK_PROBE)
165 /* This is how to output an assembler line
166 that says to advance the location counter
167 to a multiple of 2**LOG bytes. */
169 #undef ASM_OUTPUT_ALIGN
170 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
171 if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
173 /* Define this macro if in some cases global symbols from one translation
174 unit may not be bound to undefined symbols in another translation unit
175 without user intervention. For instance, under Microsoft Windows
176 symbols must be explicitly imported from shared libraries (DLLs). */
177 #define MULTIPLE_SYMBOL_SPACES
179 #define UNIQUE_SECTION_P(DECL) DECL_ONE_ONLY (DECL)
180 extern void i386_pe_unique_section ();
181 #define UNIQUE_SECTION(DECL,RELOC) i386_pe_unique_section (DECL, RELOC)
183 #define SUPPORTS_ONE_ONLY 1
185 /* A C statement to output something to the assembler file to switch to section
186 NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or
187 NULL_TREE. Some target formats do not support arbitrary sections. Do not
188 define this macro in such cases. */
189 #undef ASM_OUTPUT_SECTION_NAME
190 #define ASM_OUTPUT_SECTION_NAME(STREAM, DECL, NAME, RELOC) \
192 if ((DECL) && TREE_CODE (DECL) == FUNCTION_DECL) \
193 fprintf (STREAM, "\t.section %s,\"x\"\n", (NAME)); \
194 else if ((DECL) && DECL_READONLY_SECTION (DECL, RELOC)) \
195 fprintf (STREAM, "\t.section %s,\"\"\n", (NAME)); \
197 fprintf (STREAM, "\t.section %s,\"w\"\n", (NAME)); \
198 /* Functions may have been compiled at various levels of \
199 optimization so we can't use `same_size' here. Instead, \
200 have the linker pick one. */ \
201 if ((DECL) && DECL_ONE_ONLY (DECL)) \
202 fprintf (STREAM, "\t.linkonce %s\n", \
203 TREE_CODE (DECL) == FUNCTION_DECL \
204 ? "discard" : "same_size"); \
207 #undef ASM_COMMENT_START
208 #define ASM_COMMENT_START " #"
210 /* DWARF2 Unwinding doesn't work with exception handling yet. */
211 #define DWARF2_UNWIND_INFO 0
213 /* Don't assume anything about the header files. */
214 #define NO_IMPLICIT_EXTERN_C
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