1 /* Definitions for Intel x86 running BeOS
2 Copyright (C) 1998-99, 2000 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 #include <i386/i386.h> /* Base i386 target machine definitions */
22 #include <i386/att.h> /* Use the i386 AT&T assembler syntax */
23 #include <svr4.h> /* some common stuff */
26 #define TARGET_VERSION fprintf (stderr, " (i386 BeOS/ELF)");
28 /* Change debugging to Dwarf2. */
29 #undef PREFERRED_DEBUGGING_TYPE
30 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
32 /* The SVR4 ABI for the i386 says that records and unions are returned
34 #undef DEFAULT_PCC_STRUCT_RETURN
35 #define DEFAULT_PCC_STRUCT_RETURN 1
37 #undef ASM_COMMENT_START
38 #define ASM_COMMENT_START " #"
40 /* This is how to output an element of a case-vector that is relative.
41 This is only used for PIC code. See comments by the `casesi' insn in
42 i386.md for an explanation of the expression this outputs. */
43 #undef ASM_OUTPUT_ADDR_DIFF_ELT
44 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
45 fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE)
47 /* Indicate that jump tables go in the text section. This is
48 necessary when compiling PIC code. */
49 #define JUMP_TABLES_IN_TEXT_SECTION (flag_pic)
51 #undef DBX_REGISTER_NUMBER
52 #define DBX_REGISTER_NUMBER(n) svr4_dbx_register_map[n]
54 /* Output assembler code to FILE to increment profiler label # LABELNO
55 for profiling a function entry. */
57 #undef FUNCTION_PROFILER
58 #define FUNCTION_PROFILER(FILE, LABELNO) \
62 fprintf (FILE, "\tleal %sP%d@GOTOFF(%%ebx),%%edx\n", \
63 LPREFIX, (LABELNO)); \
64 fprintf (FILE, "\tcall *mcount@GOT(%%ebx)\n"); \
68 fprintf (FILE, "\tmovl $%sP%d,%%edx\n", LPREFIX, (LABELNO)); \
69 fprintf (FILE, "\tcall mcount\n"); \
74 #define SIZE_TYPE "long unsigned int"
77 #define PTRDIFF_TYPE "long int"
80 #define WCHAR_TYPE "short unsigned int"
83 #define WCHAR_UNSIGNED 1
85 #undef WCHAR_TYPE_SIZE
86 #define WCHAR_TYPE_SIZE 16
89 #define CPP_PREDEFINES "-D__ELF__ -D__BEOS__ -D__INTEL__ -D_X86_=1 \
90 -D__stdcall=__attribute__((__stdcall__)) \
91 -D__cdecl=__attribute__((__cdecl__)) \
92 -D__declspec(x)=__attribute__((x)) \
96 #define CPP_SPEC "%(cpp_cpu) %{!no-fPIC:%{!no-fpic:-D__PIC__ -D__pic__}}"
98 /* BeOS uses lots of multichars, so don't warn about them unless the
99 user explicitly asks for the warnings with -Wmultichar. Note that
100 CC1_SPEC is used for both cc1 and cc1plus. */
103 #define CC1_SPEC "%{!no-fpic:%{!fPIC:-fpic}} %{!Wmultichar: -Wno-multichar} %(cc1_cpu) %{profile:-p}"
106 #define CC1PLUS_SPEC "%{!Wctor-dtor-privacy:-Wno-ctor-dtor-privacy}"
108 /* Provide a LINK_SPEC appropriate for BeOS. Here we provide support
109 for the special GCC options -static and -shared, which allow us to
110 link things in one of these three modes by applying the appropriate
111 combinations of options at link-time. */
113 /* If ELF is the default format, we should not use /lib/elf. */
116 #define LINK_SPEC "%{!o*:-o %b} -m elf_i386_be -shared -Bsymbolic %{nostart:-e 0}"
118 /* Provide start and end file specs appropriate to glibc. */
120 /* LIB_SPEC for BeOS */
122 #define LIB_SPEC "-lnet -lroot"
124 /* gcc runtime lib is built into libroot.so on BeOS */
125 /* ??? This is gonna be lovely when the next release of gcc has
126 some new symbol in, so that links start failing. */
128 #define LIBGCC_SPEC ""
130 #undef STARTFILE_SPEC
131 #define STARTFILE_SPEC "crti.o%s crtbegin.o%s %{!nostart:start_dyn.o%s}"
134 #define ENDFILE_SPEC "crtend.o%s crtn.o%s"
136 /* Get perform_* macros to build libgcc.a. */
137 #include "i386/perform.h"
139 /* A C statement (sans semicolon) to output to the stdio stream
140 FILE the assembler definition of uninitialized global DECL named
141 NAME whose size is SIZE bytes and alignment is ALIGN bytes.
142 Try to use asm_output_aligned_bss to implement this macro. */
144 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
145 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
147 /* A C statement to output to the stdio stream FILE an assembler
148 command to advance the location counter to a multiple of 1<<LOG
149 bytes if it is within MAX_SKIP bytes.
151 This is used to align code labels according to Intel recommendations. */
153 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
154 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
156 if ((MAX_SKIP)==0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
157 else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP))
161 * Support for __declspec(dllimport) & __declspec(dllexport).
164 /* We don't care about dllimport. */
166 #define TARGET_NOP_FUN_DLLIMPORT 1
168 /* A C expression whose value is nonzero if IDENTIFIER with arguments ARGS
169 is a valid machine specific attribute for DECL.
170 The attributes in ATTRIBUTES have previously been assigned to DECL. */
172 #undef VALID_MACHINE_DECL_ATTRIBUTE
173 #define VALID_MACHINE_DECL_ATTRIBUTE(DECL, ATTRIBUTES, IDENTIFIER, ARGS) \
174 i386_pe_valid_decl_attribute_p (DECL, ATTRIBUTES, IDENTIFIER, ARGS)
175 extern int i386_pe_valid_decl_attribute_p ();
177 /* A C expression whose value is nonzero if IDENTIFIER with arguments ARGS
178 is a valid machine specific attribute for TYPE.
179 The attributes in ATTRIBUTES have previously been assigned to TYPE. */
181 #undef VALID_MACHINE_TYPE_ATTRIBUTE
182 #define VALID_MACHINE_TYPE_ATTRIBUTE(TYPE, ATTRIBUTES, IDENTIFIER, ARGS) \
183 i386_pe_valid_type_attribute_p (TYPE, ATTRIBUTES, IDENTIFIER, ARGS)
184 extern int i386_pe_valid_type_attribute_p ();
186 #define MERGE_MACHINE_DECL_ATTRIBUTES(OLD, NEW) \
187 i386_pe_merge_decl_attributes ((OLD), (NEW))
188 extern union tree_node *i386_pe_merge_decl_attributes ();
190 /* Used to implement dllexport overriding dllimport semantics. It's also used
191 to handle vtables - the first pass won't do anything because
192 DECL_CONTEXT (DECL) will be 0 so i386_pe_dll{ex,im}port_p will return 0.
193 It's also used to handle dllimport override semantics. */
195 #define REDO_SECTION_INFO_P(DECL) \
196 ((DECL_MACHINE_ATTRIBUTES (DECL) != NULL_TREE) \
197 || (TREE_CODE (DECL) == VAR_DECL && DECL_VIRTUAL_P (DECL)))
199 #define REDO_SECTION_INFO_P(DECL) 1
202 /* Used only here locally. If the decl has been exported, emit the
203 necessary assembly. */
205 #define ASM_EXPORT_DECL(FILE, NAME, DECL) \
207 if ((DECL) && i386_pe_dllexport_p (DECL)) \
209 fprintf ((FILE), ".section .exports\n"); \
210 fprintf ((FILE), "\t%s\t\"", STRING_ASM_OP); \
211 assemble_name (FILE, NAME); \
212 fprintf ((FILE), "\"\n.previous\n"); \
216 /* Write the extra assembler code needed to declare a function properly.
217 Some svr4 assemblers need to also have something extra said about the
218 function's return value. We allow for that here. */
220 #undef ASM_DECLARE_FUNCTION_NAME
221 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
223 ASM_EXPORT_DECL(FILE, NAME, DECL); \
224 fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
225 assemble_name (FILE, NAME); \
227 fprintf (FILE, TYPE_OPERAND_FMT, "function"); \
229 ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
230 ASM_OUTPUT_LABEL(FILE, NAME); \
233 /* Write the extra assembler code needed to declare an object properly. */
235 #undef ASM_DECLARE_OBJECT_NAME
236 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
238 ASM_EXPORT_DECL(FILE, NAME, DECL); \
239 fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \
240 assemble_name (FILE, NAME); \
242 fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
244 size_directive_output = 0; \
245 if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
247 size_directive_output = 1; \
248 fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \
249 assemble_name (FILE, NAME); \
251 fprintf (FILE, HOST_WIDE_INT_PRINT_DEC, \
252 int_size_in_bytes (TREE_TYPE (DECL))); \
253 fputc ('\n', FILE); \
255 ASM_OUTPUT_LABEL(FILE, NAME); \
258 /* Similarly for COMMON symbols. */
260 #undef ASM_OUTPUT_ALIGNED_COMMON
261 #undef ASM_OUTPUT_ALIGNED_DECL_COMMON
262 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \
264 ASM_EXPORT_DECL(FILE, NAME, DECL); \
265 fprintf ((FILE), "\t%s\t", COMMON_ASM_OP); \
266 assemble_name ((FILE), (NAME)); \
267 fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT); \
270 #undef ASM_OUTPUT_ALIGNED_LOCAL
271 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
272 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
274 fprintf ((FILE), "\t%s\t", LOCAL_ASM_OP); \
275 assemble_name ((FILE), (NAME)); \
276 fprintf ((FILE), "\n"); \
277 ASM_OUTPUT_ALIGNED_DECL_COMMON((FILE), (DECL), (NAME), (SIZE), (ALIGN)); \
280 /* This macro gets just the user-specified name out of the string in a
281 SYMBOL_REF. Discard trailing @[NUM] encoded by ENCODE_SECTION_INFO. */
282 /* Unused except to let winnt.c compile. */
284 #undef STRIP_NAME_ENCODING
285 #define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME) ((VAR) = (SYMBOL_NAME))
287 /* For native compiler, use standard BeOS include file search paths
288 rooted in /boot/develop/headers. For a cross compiler, don't
289 expect the host to use the BeOS directory scheme, and instead look
290 for the BeOS include files relative to TOOL_INCLUDE_DIR. Yes, we
291 use ANSI string concatenation here (FIXME) */
293 #ifndef CROSS_COMPILE
294 #undef INCLUDE_DEFAULTS
295 #define INCLUDE_DEFAULTS \
297 { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 },\
298 { GCC_INCLUDE_DIR, "GCC", 0, 0 },\
299 { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1}, \
300 { "/boot/develop/headers/be/add-ons/graphics", 0, 0, 0 },\
301 { "/boot/develop/headers/be/devel", 0, 0, 0 },\
302 { "/boot/develop/headers/be/translation", 0, 0, 0 },\
303 { "/boot/develop/headers/be/mail", 0, 0, 0 },\
304 { "/boot/develop/headers/gnu", 0, 0, 0 },\
305 { "/boot/develop/headers/be/drivers", 0, 0, 0 },\
306 { "/boot/develop/headers/be/opengl", 0, 0, 0 },\
307 { "/boot/develop/headers/be/game", 0, 0, 0 },\
308 { "/boot/develop/headers/be/support", 0, 0, 0 },\
309 { "/boot/develop/headers/be/storage", 0, 0, 0 },\
310 { "/boot/develop/headers/be/kernel", 0, 0, 0 },\
311 { "/boot/develop/headers/be/net", 0, 0, 0 },\
312 { "/boot/develop/headers/be/midi", 0, 0, 0 },\
313 { "/boot/develop/headers/be/media", 0, 0, 0 },\
314 { "/boot/develop/headers/be/interface", 0, 0, 0 },\
315 { "/boot/develop/headers/be/device", 0, 0, 0 },\
316 { "/boot/develop/headers/be/app", 0, 0, 0 },\
317 { "/boot/develop/headers/cpp", 0, 0, 0 },\
318 { "/boot/develop/headers/posix", 0, 0, 0 },\
319 { "/boot/develop/headers/be/precompiled", 0, 0, 0 },\
320 { "/boot/develop/headers/be", 0, 0, 0 },\
321 { "/boot/develop/headers", 0, 0, 0 }, \
324 #else /* CROSS_COMPILE */
325 #undef INCLUDE_DEFAULTS
326 #define INCLUDE_DEFAULTS \
328 { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 },\
329 { GCC_INCLUDE_DIR, "GCC", 0, 0 },\
330 { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1}, \
331 { CROSS_INCLUDE_DIR "/be/add-ons/graphics", 0, 0, 0 },\
332 { CROSS_INCLUDE_DIR "/be/devel", 0, 0, 0 },\
333 { CROSS_INCLUDE_DIR "/be/translation", 0, 0, 0 },\
334 { CROSS_INCLUDE_DIR "/be/mail", 0, 0, 0 },\
335 { CROSS_INCLUDE_DIR "/gnu", 0, 0, 0 },\
336 { CROSS_INCLUDE_DIR "/be/drivers", 0, 0, 0 },\
337 { CROSS_INCLUDE_DIR "/be/opengl", 0, 0, 0 },\
338 { CROSS_INCLUDE_DIR "/be/game", 0, 0, 0 },\
339 { CROSS_INCLUDE_DIR "/be/support", 0, 0, 0 },\
340 { CROSS_INCLUDE_DIR "/be/storage", 0, 0, 0 },\
341 { CROSS_INCLUDE_DIR "/be/kernel", 0, 0, 0 },\
342 { CROSS_INCLUDE_DIR "/be/net", 0, 0, 0 },\
343 { CROSS_INCLUDE_DIR "/be/midi", 0, 0, 0 },\
344 { CROSS_INCLUDE_DIR "/be/media", 0, 0, 0 },\
345 { CROSS_INCLUDE_DIR "/be/interface", 0, 0, 0 },\
346 { CROSS_INCLUDE_DIR "/be/device", 0, 0, 0 },\
347 { CROSS_INCLUDE_DIR "/be/app", 0, 0, 0 },\
348 { CROSS_INCLUDE_DIR "/cpp", 0, 0, 0 },\
349 { CROSS_INCLUDE_DIR "/posix", 0, 0, 0 },\
350 { CROSS_INCLUDE_DIR "/be/precompiled", 0, 0, 0 },\
351 { CROSS_INCLUDE_DIR "/be", 0, 0, 0 },\
352 { CROSS_INCLUDE_DIR , 0, 0, 0 }, \
357 /* Whee. LIBRARY_PATH is Be's LD_LIBRARY_PATH, which of course will
358 cause nasty problems if we override it. */
359 #define LIBRARY_PATH_ENV "BELIBRARIES"
361 /* BeOS doesn't have a separate math library. */
362 #define MATH_LIBRARY ""
364 /* BeOS headers are C++-aware (and often use C++). */
365 #define NO_IMPLICIT_EXTERN_C
367 /* Define this macro if in some cases global symbols from one translation
368 unit may not be bound to undefined symbols in another translation unit
369 without user intervention. For instance, under Microsoft Windows
370 symbols must be explicitly imported from shared libraries (DLLs). */
371 #define MULTIPLE_SYMBOL_SPACES
373 /* A C statement to output assembler commands which will identify the object
374 file as having been compiled with GNU CC. This isn't needed for BeOS
375 because we use DWARF and DWARF has an DW_AT_producer tag that does the
376 same thing. BeOS debuggers, like bdb, that don't know about this hack
377 can get confused when they find two symbols with the same address, and
378 print the wrong one (gcc2_compiled) in things like backtraces. The most
379 likely ill effect of disabling this is that a BeOS port of gdb would not
380 be able to tell that an executable was compiled with gcc if there was no
382 #undef ASM_IDENTIFY_GCC
383 #define ASM_IDENTIFY_GCC(FILE)