1 /* Definitions of various defaults for tm.h macros.
2 Copyright (C) 1992, 1996, 1997, 1998, 1999, 2000, 2001
3 Free Software Foundation, Inc.
4 Contributed by Ron Guilmette (rfg@monkeys.com)
6 This file is part of GNU CC.
8 GNU CC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GNU CC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU CC; see the file COPYING. If not, write to
20 the Free Software Foundation, 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 #ifndef GCC_DEFAULTS_H
24 #define GCC_DEFAULTS_H
26 /* Store in OUTPUT a string (made with alloca) containing
27 an assembler-name for a local static variable or function named NAME.
28 LABELNO is an integer which is different for each call. */
30 #ifndef ASM_FORMAT_PRIVATE_NAME
31 #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
33 int len = strlen (NAME); \
34 char *temp = (char *) alloca (len + 3); \
36 strcpy (&temp[1], (NAME)); \
37 temp[len + 1] = '.'; \
39 (OUTPUT) = (char *) alloca (strlen (NAME) + 11); \
40 ASM_GENERATE_INTERNAL_LABEL (OUTPUT, temp, LABELNO); \
45 #define ASM_STABD_OP "\t.stabd\t"
48 /* This is how to output an element of a case-vector that is absolute.
49 Some targets don't use this, but we have to define it anyway. */
51 #ifndef ASM_OUTPUT_ADDR_VEC_ELT
52 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
53 do { fprintf (FILE, "\t%s\t", ASM_LONG); \
54 ASM_OUTPUT_INTERNAL_LABEL (FILE, "L", (VALUE)); \
59 /* Provide default for ASM_OUTPUT_ALTERNATE_LABEL_NAME. */
60 #ifndef ASM_OUTPUT_ALTERNATE_LABEL_NAME
61 #define ASM_OUTPUT_ALTERNATE_LABEL_NAME(FILE,INSN) \
62 do { ASM_OUTPUT_LABEL(FILE,LABEL_ALTERNATE_NAME (INSN)); } while (0)
65 /* choose a reasonable default for ASM_OUTPUT_ASCII. */
67 #ifndef ASM_OUTPUT_ASCII
68 #define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \
70 FILE *_hide_asm_out_file = (MYFILE); \
71 const unsigned char *_hide_p = (const unsigned char *) (MYSTRING); \
72 int _hide_thissize = (MYLENGTH); \
74 FILE *asm_out_file = _hide_asm_out_file; \
75 const unsigned char *p = _hide_p; \
76 int thissize = _hide_thissize; \
78 fprintf (asm_out_file, "\t.ascii \""); \
80 for (i = 0; i < thissize; i++) \
82 register int c = p[i]; \
83 if (c == '\"' || c == '\\') \
84 putc ('\\', asm_out_file); \
86 putc (c, asm_out_file); \
89 fprintf (asm_out_file, "\\%o", c); \
90 /* After an octal-escape, if a digit follows, \
91 terminate one string constant and start another. \
92 The Vax assembler fails to stop reading the escape \
93 after three digits, so this is the only way we \
94 can get it to parse the data properly. */ \
95 if (i < thissize - 1 && ISDIGIT(p[i + 1])) \
96 fprintf (asm_out_file, "\"\n\t.ascii \""); \
99 fprintf (asm_out_file, "\"\n"); \
105 #ifndef ASM_IDENTIFY_GCC
106 /* Default the definition, only if ASM_IDENTIFY_GCC is not set,
107 because if it is set, we might not want ASM_IDENTIFY_LANGUAGE
108 outputting labels, if we do want it to, then it must be defined
110 #ifndef ASM_IDENTIFY_LANGUAGE
111 #define ASM_IDENTIFY_LANGUAGE(FILE) output_lang_identify (FILE);
115 /* This is how we tell the assembler to equate two values. */
117 #ifndef ASM_OUTPUT_DEF
118 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
119 do { fprintf ((FILE), "%s", SET_ASM_OP); \
120 assemble_name (FILE, LABEL1); \
121 fprintf (FILE, ","); \
122 assemble_name (FILE, LABEL2); \
123 fprintf (FILE, "\n"); \
128 /* This is how to output a reference to a user-level label named NAME. */
130 #ifndef ASM_OUTPUT_LABELREF
131 #define ASM_OUTPUT_LABELREF(FILE,NAME) asm_fprintf ((FILE), "%U%s", (NAME))
134 /* Allow target to print debug info labels specially. This is useful for
135 VLIW targets, since debug info labels should go into the middle of
136 instruction bundles instead of breaking them. */
138 #ifndef ASM_OUTPUT_DEBUG_LABEL
139 #define ASM_OUTPUT_DEBUG_LABEL(FILE, PREFIX, NUM) \
140 ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM)
143 /* This determines whether or not we support weak symbols. */
144 #ifndef SUPPORTS_WEAK
145 #ifdef ASM_WEAKEN_LABEL
146 #define SUPPORTS_WEAK 1
148 #define SUPPORTS_WEAK 0
152 /* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to
153 provide a weak attribute. Else define it to nothing.
155 This would normally belong in gansidecl.h, but SUPPORTS_WEAK is
156 not available at that time.
158 Note, this is only for use by target files which we know are to be
160 #ifndef TARGET_ATTRIBUTE_WEAK
162 # define TARGET_ATTRIBUTE_WEAK __attribute__ ((weak))
164 # define TARGET_ATTRIBUTE_WEAK
168 /* If the target supports init_priority C++ attribute, give
169 SUPPORTS_INIT_PRIORITY a nonzero value. */
170 #ifndef SUPPORTS_INIT_PRIORITY
171 #define SUPPORTS_INIT_PRIORITY 1
172 #endif /* SUPPORTS_INIT_PRIORITY */
174 /* If we have a definition of INCOMING_RETURN_ADDR_RTX, assume that
175 the rest of the DWARF 2 frame unwind support is also provided. */
176 #if !defined (DWARF2_UNWIND_INFO) && defined (INCOMING_RETURN_ADDR_RTX)
177 #define DWARF2_UNWIND_INFO 1
180 #if defined (DWARF2_UNWIND_INFO) && !defined (EH_FRAME_SECTION)
181 # if defined (EH_FRAME_SECTION_ASM_OP)
182 # define EH_FRAME_SECTION() eh_frame_section ()
184 /* If we aren't using crtstuff to run ctors, don't use it for EH. */
185 # if defined (ASM_OUTPUT_SECTION_NAME) && defined (ASM_OUTPUT_CONSTRUCTOR)
186 # define EH_FRAME_SECTION_ASM_OP "\t.section\t.eh_frame,\"aw\""
187 # define EH_FRAME_SECTION() \
188 do { named_section (NULL_TREE, ".eh_frame", 0); } while (0)
193 /* If we have no definition for UNIQUE_SECTION, but do have the
194 ability to generate arbitrary sections, construct something
196 #ifdef ASM_OUTPUT_SECTION_NAME
197 #ifndef UNIQUE_SECTION
198 #define UNIQUE_SECTION(DECL,RELOC) \
204 name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \
205 /* Strip off any encoding in name. */ \
206 STRIP_NAME_ENCODING (name, name); \
208 len = strlen (name) + 1; \
209 string = alloca (len + 1); \
210 sprintf (string, ".%s", name); \
212 DECL_SECTION_NAME (DECL) = build_string (len, string); \
215 #ifndef UNIQUE_SECTION_P
216 #define UNIQUE_SECTION_P(DECL) 0
220 /* By default, we generate a label at the beginning and end of the
221 text section, and compute the size of the text section by
222 subtracting the two. However, on some platforms that doesn't
223 work, and we use the section itself, rather than a label at the
224 beginning of it, to indicate the start of the section. On such
225 platforms, define this to zero. */
226 #ifndef DWARF2_GENERATE_TEXT_SECTION_LABEL
227 #define DWARF2_GENERATE_TEXT_SECTION_LABEL 1
230 /* Supply a default definition for PROMOTE_PROTOTYPES. */
231 #ifndef PROMOTE_PROTOTYPES
232 #define PROMOTE_PROTOTYPES 0
235 /* Number of hardware registers that go into the DWARF-2 unwind info.
236 If not defined, equals FIRST_PSEUDO_REGISTER */
238 #ifndef DWARF_FRAME_REGISTERS
239 #define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER
242 /* Default sizes for base C types. If the sizes are different for
243 your target, you should override these values by defining the
244 appropriate symbols in your tm.h file. */
246 #ifndef CHAR_TYPE_SIZE
247 #define CHAR_TYPE_SIZE BITS_PER_UNIT
250 #ifndef SHORT_TYPE_SIZE
251 #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
254 #ifndef INT_TYPE_SIZE
255 #define INT_TYPE_SIZE BITS_PER_WORD
258 #ifndef LONG_TYPE_SIZE
259 #define LONG_TYPE_SIZE BITS_PER_WORD
262 #ifndef LONG_LONG_TYPE_SIZE
263 #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
266 #ifndef WCHAR_TYPE_SIZE
267 #define WCHAR_TYPE_SIZE INT_TYPE_SIZE
270 #ifndef WCHAR_UNSIGNED
271 #define WCHAR_UNSIGNED 0
274 #ifndef FLOAT_TYPE_SIZE
275 #define FLOAT_TYPE_SIZE BITS_PER_WORD
278 #ifndef DOUBLE_TYPE_SIZE
279 #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
282 #ifndef LONG_DOUBLE_TYPE_SIZE
283 #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
286 #ifndef BUILD_VA_LIST_TYPE
287 #define BUILD_VA_LIST_TYPE(X) ((X) = ptr_type_node)
290 #endif /* GCC_DEFAULTS_H */