]>
gcc.gnu.org Git - gcc.git/blob - gcc/config/i386/i386-interix.h
1 /* Target definitions for GNU compiler for Intel 80386 running Interix
2 Parts Copyright (C) 1991, 1999, 2000, 2002 Free Software Foundation, Inc.
5 by Douglas B. Rupp (drupp@cs.washington.edu).
6 by Ron Guilmette (rfg@netcom.com).
7 by Donn Terry (donn@softway.com).
8 by Mumit Khan (khan@xraylith.wisc.edu).
10 This file is part of GNU CC.
12 GNU CC is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2, or (at your option)
17 GNU CC is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with GNU CC; see the file COPYING. If not, write to
24 the Free Software Foundation, 59 Temple Place - Suite 330,
25 Boston, MA 02111-1307, USA. */
27 /* The rest must follow. */
29 #define DBX_DEBUGGING_INFO 1
30 #define SDB_DEBUGGING_INFO 1
31 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
33 #define HANDLE_SYSV_PRAGMA
34 #undef HANDLE_PRAGMA_WEAK /* until the link format can handle it */
36 /* By default, target has a 80387, uses IEEE compatible arithmetic,
37 and returns float values in the 387 and needs stack probes
38 We also align doubles to 64-bits for MSVC default compatibility */
39 #undef TARGET_SUBTARGET_DEFAULT
40 #define TARGET_SUBTARGET_DEFAULT \
41 (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_STACK_PROBE | \
44 #undef TARGET_CPU_DEFAULT
45 #define TARGET_CPU_DEFAULT 2 /* 486 */
47 #define WCHAR_TYPE_SIZE 16
48 #define WCHAR_TYPE "short unsigned int"
50 /* WinNT (and thus Interix) use unsigned int */
51 #define SIZE_TYPE "unsigned int"
53 #define ASM_LOAD_ADDR(loc, reg) " leal " #loc "," #reg "\n"
55 /* cpp handles __STDC__ */
56 #define TARGET_OS_CPP_BUILTINS() \
59 builtin_define ("__INTERIX"); \
60 builtin_define ("__OPENNT"); \
61 builtin_define ("_M_IX86=300"); \
62 builtin_define ("_X86_=1"); \
63 builtin_define ("__stdcall=__attribute__((__stdcall__))"); \
64 builtin_define ("__cdecl=__attribute__((__cdecl__))"); \
65 builtin_define ("__declspec(x)=__attribute__((x))"); \
66 builtin_assert ("system=unix"); \
67 builtin_assert ("system=interix"); \
68 if (preprocessing_asm_p ()) \
69 builtin_define_std ("LANGUAGE_ASSEMBLY"); \
72 builtin_define_std ("LANGUAGE_C"); \
73 if (c_language == clk_cplusplus) \
74 builtin_define_std ("LANGUAGE_C_PLUS_PLUS"); \
76 builtin_define_std ("LANGUAGE_OBJECTIVE_C"); \
82 /* Write out the correct language type definition for the header files.
83 Unless we have assembler language, write out the symbols for C.
84 mieee is an Alpha specific variant. Cross polination a bad idea.
86 #define CPP_SPEC "-remap %{posix:-D_POSIX_SOURCE} \
87 -isystem %$INTERIX_ROOT/usr/include"
89 #define TARGET_VERSION fprintf (stderr, " (i386 Interix)");
91 /* The global __fltused is necessary to cause the printf/scanf routines
92 for outputting/inputting floating point numbers to be loaded. Since this
93 is kind of hard to detect, we just do it all the time. */
98 #define ASM_FILE_START(FILE) \
99 do { fprintf (FILE, "\t.file\t"); \
100 output_quoted_string (FILE, dump_base_name); \
101 fprintf (FILE, "\n"); \
102 fprintf (FILE, ".global\t__fltused\n"); \
105 /* A table of bytes codes used by the ASM_OUTPUT_ASCII and
106 ASM_OUTPUT_LIMITED_STRING macros. Each byte in the table
107 corresponds to a particular byte value [0..255]. For any
108 given byte value, if the value in the corresponding table
109 position is zero, the given character can be output directly.
110 If the table value is 1, the byte must be output as a \ooo
111 octal escape. If the tables value is anything else, then the
112 byte value should be output as a \ followed by the value
113 in the table. Note that we can use standard UN*X escape
114 sequences for many control characters, but we don't use
115 \a to represent BEL because some svr4 assemblers (e.g. on
116 the i386) don't know about that. Also, we don't use \v
117 since some versions of gas, such as 2.2 did not accept it. */
120 "\1\1\1\1\1\1\1\1btn\1fr\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
121 \0\0\"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
122 \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\\\0\0\0\
123 \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1\
124 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
125 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
126 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
127 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1"
129 /* Some svr4 assemblers have a limit on the number of characters which
130 can appear in the operand of a .string directive. If your assembler
131 has such a limitation, you should define STRING_LIMIT to reflect that
132 limit. Note that at least some svr4 assemblers have a limit on the
133 actual number of bytes in the double-quoted string, and that they
134 count each character in an escape sequence as one byte. Thus, an
135 escape sequence like \377 would count as four bytes.
137 If your target assembler doesn't support the .string directive, you
138 should define this to zero.
141 #define STRING_LIMIT ((unsigned) 256)
143 #define STRING_ASM_OP "\t.string\t"
145 /* The routine used to output NUL terminated strings. We use a special
146 version of this for most svr4 targets because doing so makes the
147 generated assembly code more compact (and thus faster to assemble)
148 as well as more readable, especially for targets like the i386
149 (where the only alternative is to output character sequences as
150 comma separated lists of numbers). */
152 #define ASM_OUTPUT_LIMITED_STRING(FILE, STR) \
155 register const unsigned char *_limited_str = \
156 (const unsigned char *) (STR); \
157 register unsigned ch; \
158 fprintf ((FILE), "%s\"", STRING_ASM_OP); \
159 for (; (ch = *_limited_str); _limited_str++) \
161 register int escape = ESCAPES[ch]; \
168 fprintf ((FILE), "\\%03o", ch); \
171 putc ('\\', (FILE)); \
172 putc (escape, (FILE)); \
176 fprintf ((FILE), "\"\n"); \
180 /* The routine used to output sequences of byte values. We use a special
181 version of this for most svr4 targets because doing so makes the
182 generated assembly code more compact (and thus faster to assemble)
183 as well as more readable. Note that if we find subparts of the
184 character sequence which end with NUL (and which are shorter than
185 STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING. */
187 #undef ASM_OUTPUT_ASCII
188 #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \
191 register const unsigned char *_ascii_bytes = \
192 (const unsigned char *) (STR); \
193 register const unsigned char *limit = _ascii_bytes + (LENGTH); \
194 register unsigned bytes_in_chunk = 0; \
195 for (; _ascii_bytes < limit; _ascii_bytes++) \
197 register const unsigned char *p; \
198 if (bytes_in_chunk >= 64) \
200 fputc ('\n', (FILE)); \
201 bytes_in_chunk = 0; \
203 for (p = _ascii_bytes; p < limit && *p != '\0'; p++) \
205 if (p < limit && (p - _ascii_bytes) <= (long) STRING_LIMIT) \
207 if (bytes_in_chunk > 0) \
209 fputc ('\n', (FILE)); \
210 bytes_in_chunk = 0; \
212 ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes); \
217 if (bytes_in_chunk == 0) \
218 fprintf ((FILE), "\t.byte\t"); \
220 fputc (',', (FILE)); \
221 fprintf ((FILE), "0x%02x", *_ascii_bytes); \
222 bytes_in_chunk += 5; \
225 if (bytes_in_chunk > 0) \
226 fprintf ((FILE), "\n"); \
230 /* Emit code to check the stack when allocating more that 4000
233 #define CHECK_STACK_LIMIT 0x1000
235 /* the following are OSF linker (not gld) specific... we don't want them */
236 #undef HAS_INIT_SECTION
237 #undef LD_INIT_SWITCH
238 #undef LD_FINI_SWITCH
240 /* The following are needed for us to be able to use winnt.c, but are not
241 otherwise meaningful to Interix. (The functions that use these are
242 never called because we don't do DLLs.) */
243 #define TARGET_NOP_FUN_DLLIMPORT 1
244 #define drectve_section() /* nothing */
246 #define EH_FRAME_IN_DATA_SECTION
248 #define READONLY_DATA_SECTION_ASM_OP "\t.section\t.rdata,\"r\""
250 /* The MS compilers take alignment as a number of bytes, so we do as well */
251 #undef ASM_OUTPUT_ALIGN
252 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
253 if ((LOG)!=0) fprintf ((FILE), "\t.balign %d\n", 1<<(LOG))
255 /* The linker will take care of this, and having them causes problems with
256 ld -r (specifically -rU). */
257 #define CTOR_LISTS_DEFINED_EXTERNALLY 1
259 #define SET_ASM_OP "\t.set\t"
260 /* Output a definition (implements alias) */
261 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
264 fprintf ((FILE), "%s", SET_ASM_OP); \
265 assemble_name (FILE, LABEL1); \
266 fprintf (FILE, ","); \
267 assemble_name (FILE, LABEL2); \
268 fprintf (FILE, "\n"); \
272 #define HOST_PTR_PRINTF "%p"
273 #define HOST_PTR_AS_INT unsigned long
275 #define PCC_BITFIELD_TYPE_MATTERS 1
276 #define PCC_BITFIELD_TYPE_TEST TYPE_NATIVE(rec)
277 #define GROUP_BITFIELDS_BY_ALIGN TYPE_NATIVE(rec)
279 /* The following two flags are usually "off" for i386, because some non-gnu
280 tools (for the i386) don't handle them. However, we don't have that
283 /* Forward references to tags are allowed. */
284 #define SDB_ALLOW_FORWARD_REFERENCES
286 /* Unknown tags are also allowed. */
287 #define SDB_ALLOW_UNKNOWN_REFERENCES
289 /* The integer half of this list needs to be constant. However, there's
290 a lot of disagreement about what the floating point adjustments should
291 be. We pick one that works with gdb. (The underlying problem is
292 what to do about the segment registers. Since we have access to them
293 from /proc, we'll allow them to be accessed in gdb, even tho the
294 gcc compiler can't generate them. (There's some evidence that
295 MSVC does, but possibly only for certain special "canned" sequences.) */
297 #undef DBX_REGISTER_NUMBER
298 #define DBX_REGISTER_NUMBER(n) \
299 (TARGET_64BIT ? dbx64_register_map[n] \
308 : ((n) >= FIRST_STACK_REG && (n) <= LAST_STACK_REG) ? (n)+8 \
311 /* Define this macro if references to a symbol must be treated
312 differently depending on something about the variable or
313 function named by the symbol (such as what section it is in). */
315 #undef TARGET_ENCODE_SECTION_INFO
316 #define TARGET_ENCODE_SECTION_INFO i386_pe_encode_section_info
317 #undef TARGET_STRIP_NAME_ENCODING
318 #define TARGET_STRIP_NAME_ENCODING i386_pe_strip_name_encoding_full
321 /* Turn this back on when the linker is updated to handle grouped
322 .data$ sections correctly. See corresponding note in i386/interix.c.
325 /* Define this macro if in some cases global symbols from one translation
326 unit may not be bound to undefined symbols in another translation unit
327 without user intervention. For instance, under Microsoft Windows
328 symbols must be explicitly imported from shared libraries (DLLs). */
329 #define MULTIPLE_SYMBOL_SPACES
331 extern void i386_pe_unique_section
PARAMS ((tree
, int));
332 #define TARGET_ASM_UNIQUE_SECTION i386_pe_unique_section
334 #define SUPPORTS_ONE_ONLY 1
337 /* Switch into a generic section. */
338 #define TARGET_ASM_NAMED_SECTION default_pe_asm_named_section
340 /* DWARF2 Unwinding doesn't work with exception handling yet. */
341 #define DWARF2_UNWIND_INFO 0
343 /* Don't assume anything about the header files. */
344 #define NO_IMPLICIT_EXTERN_C
346 /* MSVC returns structs of up to 8 bytes via registers. */
348 #define DEFAULT_PCC_STRUCT_RETURN 0
350 #undef RETURN_IN_MEMORY
351 #define RETURN_IN_MEMORY(TYPE) \
352 (TYPE_MODE (TYPE) == BLKmode || \
353 (AGGREGATE_TYPE_P (TYPE) && int_size_in_bytes(TYPE) > 8 ))
This page took 0.051472 seconds and 5 git commands to generate.