1 /* Definitions of target machine for GNU compiler,
2 for ARM with COFF obj format.
3 Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
4 Contributed by Doug Evans (dje@cygnus.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. */
26 /* Note - it is important that this definition matches the one in tcoff.h */
27 #undef USER_LABEL_PREFIX
28 #define USER_LABEL_PREFIX "_"
31 /* Run-time Target Specification. */
33 #define TARGET_VERSION fputs (" (ARM/coff)", stderr)
36 #define TARGET_DEFAULT (ARM_FLAG_SOFT_FLOAT | ARM_FLAG_APCS_32)
38 #define MULTILIB_DEFAULTS { "mlittle-endian", "msoft-float", "mapcs-32", "mno-thumb-interwork" }
40 /* A C expression whose value is nonzero if IDENTIFIER with arguments ARGS
41 is a valid machine specific attribute for DECL.
42 The attributes in ATTRIBUTES have previously been assigned to DECL. */
43 #define VALID_MACHINE_DECL_ATTRIBUTE(DECL, ATTRIBUTES, IDENTIFIER, ARGS) \
44 arm_valid_machine_decl_attribute (DECL, IDENTIFIER, ARGS)
46 /* This is COFF, but prefer stabs. */
47 #define SDB_DEBUGGING_INFO
49 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
53 /* A C statement to output assembler commands which will identify the
54 object file as having been compiled with GNU CC (or another GNU
56 /* Define this to NULL so we don't get anything.
57 We have ASM_IDENTIFY_LANGUAGE.
58 Also, when using stabs, gcc2_compiled must be a stabs entry, not an
59 ordinary symbol, or gdb won't see it. The stabs entry must be
60 before the N_SO in order for gdb to find it. */
61 #define ASM_IDENTIFY_GCC(STREAM) \
62 fprintf (STREAM, "%sgcc2_compiled.:\n", LOCAL_LABEL_PREFIX )
64 /* This outputs a lot of .req's to define alias for various registers.
65 Let's try to avoid this. */
67 #define ASM_FILE_START(STREAM) \
70 extern char * version_string; \
71 fprintf (STREAM, "%s Generated by gcc %s for ARM/coff\n", \
72 ASM_COMMENT_START, version_string); \
73 fprintf (STREAM, ASM_APP_OFF); \
74 if (write_symbols == SDB_DEBUG) \
75 output_file_directive (STREAM, main_input_filename); \
79 /* A C statement to output something to the assembler file to switch to section
80 NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or
81 NULL_TREE. Some target formats do not support arbitrary sections. Do not
82 define this macro in such cases. */
83 #undef ASM_OUTPUT_SECTION_NAME
84 #define ASM_OUTPUT_SECTION_NAME(STREAM, DECL, NAME, RELOC) \
87 if ((DECL) && TREE_CODE (DECL) == FUNCTION_DECL) \
88 fprintf (STREAM, "\t.section %s,\"x\"\n", (NAME)); \
89 else if ((DECL) && DECL_READONLY_SECTION (DECL, RELOC)) \
90 fprintf (STREAM, "\t.section %s,\"\"\n", (NAME)); \
92 fprintf (STREAM, "\t.section %s,\"w\"\n", (NAME)); \
96 /* Support the ctors/dtors and other sections. */
98 #undef INIT_SECTION_ASM_OP
100 /* Define this macro if jump tables (for `tablejump' insns) should be
101 output in the text section, along with the assembler instructions.
102 Otherwise, the readonly data section is used. */
103 #define JUMP_TABLES_IN_TEXT_SECTION 1
105 #undef READONLY_DATA_SECTION
106 #define READONLY_DATA_SECTION rdata_section
107 #undef RDATA_SECTION_ASM_OP
108 #define RDATA_SECTION_ASM_OP "\t.section .rdata"
109 #undef CTORS_SECTION_ASM_OP
110 #define CTORS_SECTION_ASM_OP "\t.section .ctors,\"x\""
111 #undef DTORS_SECTION_ASM_OP
112 #define DTORS_SECTION_ASM_OP "\t.section .dtors,\"x\""
114 /* A list of other sections which the compiler might be "in" at any
117 #undef EXTRA_SECTIONS
118 #define EXTRA_SECTIONS SUBTARGET_EXTRA_SECTIONS in_rdata, in_ctors, in_dtors
120 #define SUBTARGET_EXTRA_SECTIONS
122 /* A list of extra section function definitions. */
124 #undef EXTRA_SECTION_FUNCTIONS
125 #define EXTRA_SECTION_FUNCTIONS \
126 RDATA_SECTION_FUNCTION \
127 CTORS_SECTION_FUNCTION \
128 DTORS_SECTION_FUNCTION \
129 SUBTARGET_EXTRA_SECTION_FUNCTIONS
131 #define SUBTARGET_EXTRA_SECTION_FUNCTIONS
133 #define RDATA_SECTION_FUNCTION \
137 if (in_section != in_rdata) \
139 fprintf (asm_out_file, "%s\n", RDATA_SECTION_ASM_OP); \
140 in_section = in_rdata; \
144 #define CTORS_SECTION_FUNCTION \
148 if (in_section != in_ctors) \
150 fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \
151 in_section = in_ctors; \
155 #define DTORS_SECTION_FUNCTION \
159 if (in_section != in_dtors) \
161 fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \
162 in_section = in_dtors; \
166 /* Support the ctors/dtors sections for g++. */
168 #define INT_ASM_OP ".word"
170 /* A C statement (sans semicolon) to output an element in the table of
171 global constructors. */
172 #undef ASM_OUTPUT_CONSTRUCTOR
173 #define ASM_OUTPUT_CONSTRUCTOR(STREAM, NAME) \
177 fprintf (STREAM, "\t%s\t ", INT_ASM_OP); \
178 assemble_name (STREAM, NAME); \
179 fprintf (STREAM, "\n"); \
183 /* A C statement (sans semicolon) to output an element in the table of
184 global destructors. */
185 #undef ASM_OUTPUT_DESTRUCTOR
186 #define ASM_OUTPUT_DESTRUCTOR(STREAM, NAME) \
190 fprintf (STREAM, "\t%s\t ", INT_ASM_OP); \
191 assemble_name (STREAM, NAME); \
192 fprintf (STREAM, "\n"); \
196 /* __CTOR_LIST__ and __DTOR_LIST__ must be defined by the linker script. */
197 #define CTOR_LISTS_DEFINED_EXTERNALLY
199 #undef DO_GLOBAL_CTORS_BODY
200 #undef DO_GLOBAL_DTORS_BODY
202 /* The ARM development system defines __main. */
203 #define NAME__MAIN "__gccmain"
204 #define SYMBOL__MAIN __gccmain