1 /* Definitions of target machine for GNU compiler, for Advanced RISC Machines
2 ARM compilation, AOF Assembler.
3 Copyright (C) 1995, 1996, 1997, 2000 Free Software Foundation, Inc.
4 Contributed by Richard Earnshaw (rearnsha@armltd.co.uk)
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. */
27 #define LINK_LIBGCC_SPECIAL 1
29 #define LINK_SPEC "%{aof} %{bin} %{aif} %{ihf} %{shl,*} %{reent*} %{split} \
30 %{ov*,*} %{reloc*} -nodebug"
32 #define STARTFILE_SPEC "crtbegin.o%s"
34 #define ENDFILE_SPEC "crtend.o%s"
37 #define ASM_SPEC "%{g -g} -arch 4 \
38 -apcs 3%{mapcs-32:/32bit}%{mapcs-26:/26bit}%{!mapcs-26:%{!macps-32:/26bit}}"
42 #define LIB_SPEC "%{Eb: armlib_h.32b%s}%{!Eb: armlib_h.32l%s}"
45 #define LIBGCC_SPEC "libgcc.a%s"
47 /* Dividing the Output into Sections (Text, Data, ...) */
48 /* AOF Assembler syntax is a nightmare when it comes to areas, since once
49 we change from one area to another, we can't go back again. Instead,
50 we must create a new area with the same attributes and add the new output
51 to that. Unfortunately, there is nothing we can do here to guarantee that
52 two areas with the same attributes will be linked adjacently in the
53 resulting executable, so we have to be careful not to do pc-relative
54 addressing across such boundaries. */
55 char *aof_text_section ();
56 #define TEXT_SECTION_ASM_OP aof_text_section ()
58 #define SELECT_RTX_SECTION(MODE,RTX,ALIGN) text_section ();
60 char *aof_data_section ();
61 #define DATA_SECTION_ASM_OP aof_data_section ()
63 #define EXTRA_SECTIONS in_zero_init, in_common
65 #define EXTRA_SECTION_FUNCTIONS \
69 #define ZERO_INIT_SECTION \
71 zero_init_section () \
73 static int zero_init_count = 1; \
74 if (in_section != in_zero_init) \
76 fprintf (asm_out_file, "\tAREA |C$$zidata%d|,NOINIT\n", \
78 in_section = in_zero_init; \
82 /* Used by ASM_OUTPUT_COMMON (below) to tell varasm.c that we've
84 #define COMMON_SECTION \
88 static int common_count = 1; \
89 if (in_section != in_common) \
91 in_section = in_common; \
94 #define CTOR_LIST_BEGIN \
95 asm (CTORS_SECTION_ASM_OP); \
96 extern func_ptr __CTOR_END__[1]; \
97 func_ptr __CTOR_LIST__[1] = {__CTOR_END__};
99 #define CTOR_LIST_END \
100 asm (CTORS_SECTION_ASM_OP); \
101 func_ptr __CTOR_END__[1] = { (func_ptr) 0 };
103 #define DO_GLOBAL_CTORS_BODY \
105 func_ptr *ptr = __CTOR_LIST__ + 1; \
110 #define DTOR_LIST_BEGIN \
111 asm (DTORS_SECTION_ASM_OP); \
112 extern func_ptr __DTOR_END__[1]; \
113 func_ptr __DTOR_LIST__[1] = {__DTOR_END__};
115 #define DTOR_LIST_END \
116 asm (DTORS_SECTION_ASM_OP); \
117 func_ptr __DTOR_END__[1] = { (func_ptr) 0 };
119 #define DO_GLOBAL_DTORS_BODY \
121 func_ptr *ptr = __DTOR_LIST__ + 1; \
126 #define JUMP_TABLES_IN_TEXT_SECTION 1
129 #define ARM_OS_NAME "(generic)"
132 /* For the AOF linker, we need to reference __main to force the standard
133 library to get linked in. */
135 #define ASM_FILE_START(STREAM) \
137 fprintf ((STREAM), "%s Generated by gcc %s for ARM/%s\n", \
138 ASM_COMMENT_START, version_string, ARM_OS_NAME); \
139 fprintf ((STREAM), "__r0\tRN\t0\n"); \
140 fprintf ((STREAM), "__a1\tRN\t0\n"); \
141 fprintf ((STREAM), "__a2\tRN\t1\n"); \
142 fprintf ((STREAM), "__a3\tRN\t2\n"); \
143 fprintf ((STREAM), "__a4\tRN\t3\n"); \
144 fprintf ((STREAM), "__v1\tRN\t4\n"); \
145 fprintf ((STREAM), "__v2\tRN\t5\n"); \
146 fprintf ((STREAM), "__v3\tRN\t6\n"); \
147 fprintf ((STREAM), "__v4\tRN\t7\n"); \
148 fprintf ((STREAM), "__v5\tRN\t8\n"); \
149 fprintf ((STREAM), "__v6\tRN\t9\n"); \
150 fprintf ((STREAM), "__sl\tRN\t10\n"); \
151 fprintf ((STREAM), "__fp\tRN\t11\n"); \
152 fprintf ((STREAM), "__ip\tRN\t12\n"); \
153 fprintf ((STREAM), "__sp\tRN\t13\n"); \
154 fprintf ((STREAM), "__lr\tRN\t14\n"); \
155 fprintf ((STREAM), "__pc\tRN\t15\n"); \
156 fprintf ((STREAM), "__f0\tFN\t0\n"); \
157 fprintf ((STREAM), "__f1\tFN\t1\n"); \
158 fprintf ((STREAM), "__f2\tFN\t2\n"); \
159 fprintf ((STREAM), "__f3\tFN\t3\n"); \
160 fprintf ((STREAM), "__f4\tFN\t4\n"); \
161 fprintf ((STREAM), "__f5\tFN\t5\n"); \
162 fprintf ((STREAM), "__f6\tFN\t6\n"); \
163 fprintf ((STREAM), "__f7\tFN\t7\n"); \
167 /* Some systems use __main in a way incompatible with its use in gcc, in these
168 cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
169 give the same symbol without quotes for an alternative entry point. You
170 must define both, or neither. */
171 #define NAME__MAIN "__gccmain"
172 #define SYMBOL__MAIN __gccmain
174 #define ASM_FILE_END(STREAM) \
178 aof_dump_pic_table (STREAM); \
179 aof_dump_imports (STREAM); \
180 fputs ("\tEND\n", (STREAM)); \
183 #define ASM_COMMENT_START ";"
185 #define ASM_APP_ON ""
187 #define ASM_APP_OFF ""
189 #define ASM_OUTPUT_LONG_DOUBLE(STREAM,VALUE) \
190 ASM_OUTPUT_DOUBLE((STREAM),(VALUE))
192 #define ASM_OUTPUT_DOUBLE(STREAM,VALUE) \
196 REAL_VALUE_TO_TARGET_DOUBLE ((VALUE), l); \
197 REAL_VALUE_TO_DECIMAL ((VALUE), "%.14g", dstr); \
198 fprintf ((STREAM), "\tDCD &%lx, &%lx\t%s double %s\n", \
199 l[0], l[1], ASM_COMMENT_START, dstr); \
202 #define ASM_OUTPUT_FLOAT(STREAM,VALUE) \
206 REAL_VALUE_TO_TARGET_SINGLE ((VALUE), l); \
207 REAL_VALUE_TO_DECIMAL ((VALUE), "%.7g", dstr); \
208 fprintf ((STREAM), "\tDCD &%lx\t%s double %s\n", \
209 l, ASM_COMMENT_START, dstr); \
212 #define ASM_OUTPUT_INT(STREAM,VALUE) \
213 (fprintf ((STREAM), "\tDCD\t"), \
214 output_addr_const ((STREAM), (VALUE)), \
215 fputc ('\n', (STREAM)))
217 #define ASM_OUTPUT_SHORT(STREAM,VALUE) \
218 (fprintf ((STREAM), "\tDCW\t"), \
219 output_addr_const ((STREAM), (VALUE)), \
220 fputc ('\n', (STREAM)))
222 #define ASM_OUTPUT_CHAR(STREAM,VALUE) \
223 (fprintf ((STREAM), "\tDCB\t"), \
224 output_addr_const ((STREAM), (VALUE)), \
225 fputc ('\n', (STREAM)))
227 #define ASM_OUTPUT_BYTE(STREAM,VALUE) \
228 fprintf ((STREAM), "\tDCB\t%d\n", (VALUE))
230 #define ASM_OUTPUT_ASCII(STREAM,PTR,LEN) \
233 const char *ptr = (PTR); \
234 fprintf ((STREAM), "\tDCB"); \
235 for (i = 0; i < (LEN); i++) \
236 fprintf ((STREAM), " &%02x%s", \
237 (unsigned ) *(ptr++), \
239 ? ((i & 3) == 3 ? "\n\tDCB" : ",") \
243 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C) ((C) == '\n')
245 /* Output of Uninitialized Variables */
247 #define ASM_OUTPUT_COMMON(STREAM,NAME,SIZE,ROUNDED) \
248 (common_section (), \
249 fprintf ((STREAM), "\tAREA "), \
250 assemble_name ((STREAM), (NAME)), \
251 fprintf ((STREAM), ", DATA, COMMON\n\t%% %d\t%s size=%d\n", \
252 (ROUNDED), ASM_COMMENT_START, SIZE))
254 #define ASM_OUTPUT_LOCAL(STREAM,NAME,SIZE,ROUNDED) \
255 (zero_init_section (), \
256 assemble_name ((STREAM), (NAME)), \
257 fprintf ((STREAM), "\n"), \
258 fprintf ((STREAM), "\t%% %d\t%s size=%d\n", \
259 (ROUNDED), ASM_COMMENT_START, SIZE))
261 /* Output and Generation of Labels */
263 extern int arm_main_function;
265 #define ASM_GLOBALIZE_LABEL(STREAM,NAME) \
267 fprintf ((STREAM), "\tEXPORT\t"); \
268 assemble_name ((STREAM), (NAME)); \
269 fputc ('\n', (STREAM)); \
270 if ((NAME)[0] == 'm' && ! strcmp ((NAME), "main")) \
271 arm_main_function = 1; \
274 #define ASM_OUTPUT_LABEL(STREAM,NAME) \
276 assemble_name (STREAM,NAME); \
277 fputs ("\n", STREAM); \
280 #define ASM_DECLARE_FUNCTION_NAME(STREAM,NAME,DECL) \
282 if (TARGET_POKE_FUNCTION_NAME) \
283 arm_poke_function_name ((STREAM), (NAME)); \
284 ASM_OUTPUT_LABEL (STREAM, NAME); \
285 if (! TREE_PUBLIC (DECL)) \
287 fputs ("\tKEEP ", STREAM); \
288 ASM_OUTPUT_LABEL (STREAM, NAME); \
290 aof_delete_import ((NAME)); \
293 #define ASM_DECLARE_OBJECT_NAME(STREAM,NAME,DECL) \
295 ASM_OUTPUT_LABEL (STREAM, NAME); \
296 if (! TREE_PUBLIC (DECL)) \
298 fputs ("\tKEEP ", STREAM); \
299 ASM_OUTPUT_LABEL (STREAM, NAME); \
301 aof_delete_import ((NAME)); \
304 #define ASM_OUTPUT_EXTERNAL(STREAM,DECL,NAME) \
305 aof_add_import ((NAME))
307 #define ASM_OUTPUT_EXTERNAL_LIBCALL(STREAM,SYMREF) \
308 (fprintf ((STREAM), "\tIMPORT\t"), \
309 assemble_name ((STREAM), XSTR ((SYMREF), 0)), \
310 fputc ('\n', (STREAM)))
312 #define ASM_OUTPUT_LABELREF(STREAM,NAME) \
313 fprintf ((STREAM), "|%s|", NAME)
315 #define ASM_GENERATE_INTERNAL_LABEL(STRING,PREFIX,NUM) \
316 sprintf ((STRING), "*|%s..%d|", (PREFIX), (NUM))
318 #define ASM_FORMAT_PRIVATE_NAME(OUTVAR,NAME,NUMBER) \
319 ((OUTVAR) = (char *) alloca (strlen ((NAME)) + 10), \
320 sprintf ((OUTVAR), "%s.%d", (NAME), (NUMBER)))
322 /* How initialization functions are handled */
324 #define CTORS_SECTION_ASM_OP "\tAREA\t|C$$gnu_ctorsvec|, DATA, READONLY"
325 #define DTORS_SECTION_ASM_OP "\tAREA\t|C$$gnu_dtorsvec|, DATA, READONLY"
327 /* Output of Assembler Instructions */
329 #define REGISTER_NAMES \
331 "a1", "a2", "a3", "a4", \
332 "v1", "v2", "v3", "v4", \
333 "v5", "v6", "sl", "fp", \
334 "ip", "sp", "lr", "pc", \
335 "f0", "f1", "f2", "f3", \
336 "f4", "f5", "f6", "f7", \
340 #define ADDITIONAL_REGISTER_NAMES \
342 {"r0", 0}, {"a1", 0}, \
343 {"r1", 1}, {"a2", 1}, \
344 {"r2", 2}, {"a3", 2}, \
345 {"r3", 3}, {"a4", 3}, \
346 {"r4", 4}, {"v1", 4}, \
347 {"r5", 5}, {"v2", 5}, \
348 {"r6", 6}, {"v3", 6}, \
349 {"r7", 7}, {"wr", 7}, \
350 {"r8", 8}, {"v5", 8}, \
351 {"r9", 9}, {"v6", 9}, \
352 {"r10", 10}, {"sl", 10}, {"v7", 10}, \
353 {"r11", 11}, {"fp", 11}, \
354 {"r12", 12}, {"ip", 12}, \
355 {"r13", 13}, {"sp", 13}, \
356 {"r14", 14}, {"lr", 14}, \
357 {"r15", 15}, {"pc", 15} \
360 #define REGISTER_PREFIX "__"
361 #define USER_LABEL_PREFIX ""
362 #define LOCAL_LABEL_PREFIX ""
364 /* AOF does not prefix user function names with an underscore. */
365 #define ARM_MCOUNT_NAME "_mcount"
367 /* Output of Dispatch Tables */
369 #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM,BODY,VALUE,REL) \
370 fprintf ((STREAM), "\tb\t|L..%d|\n", (VALUE))
372 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM,VALUE) \
373 fprintf ((STREAM), "\tDCD\t|L..%d|\n", (VALUE))
375 /* A label marking the start of a jump table is a data label. */
376 #define ASM_OUTPUT_CASE_LABEL(STREAM,PREFIX,NUM,TABLE) \
377 fprintf ((STREAM), "\tALIGN\n|%s..%d|\n", (PREFIX), (NUM))
379 /* Assembler Commands for Alignment */
381 #define ASM_OUTPUT_SKIP(STREAM,NBYTES) \
382 fprintf ((STREAM), "\t%%\t%d\n", (NBYTES))
384 #define ASM_OUTPUT_ALIGN(STREAM,POWER) \
386 register int amount = 1 << (POWER); \
388 fprintf ((STREAM), "\tALIGN 2\n"); \
389 else if (amount == 4) \
390 fprintf ((STREAM), "\tALIGN\n"); \
392 fprintf ((STREAM), "\tALIGN %d\n", amount); \
397 #undef DBX_DEBUGGING_INFO