1 /* Definitions of target machine for GNU compiler, for ARM with a.out
2 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000
3 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. */
24 #define ARM_OS_NAME "(generic)"
27 /* The text to go at the start of the assembler file */
28 #ifndef ASM_FILE_START
29 #define ASM_FILE_START(STREAM) \
31 asm_fprintf (STREAM,"%Rrfp\t.req\t%Rr9\n"); \
32 asm_fprintf (STREAM,"%Rsl\t.req\t%Rr10\n"); \
33 asm_fprintf (STREAM,"%Rfp\t.req\t%Rr11\n"); \
34 asm_fprintf (STREAM,"%Rip\t.req\t%Rr12\n"); \
35 asm_fprintf (STREAM,"%Rsp\t.req\t%Rr13\n"); \
36 asm_fprintf (STREAM,"%Rlr\t.req\t%Rr14\n"); \
37 asm_fprintf (STREAM,"%Rpc\t.req\t%Rr15\n"); \
45 #define ASM_APP_OFF ""
48 /* Switch to the text or data segment. */
49 #define TEXT_SECTION_ASM_OP "\t.text"
50 #define DATA_SECTION_ASM_OP "\t.data"
51 #define BSS_SECTION_ASM_OP "\t.bss"
53 /* Note: If USER_LABEL_PREFIX or LOCAL_LABEL_PREFIX are changed,
54 make sure that this change is reflected in the function
55 coff_arm_is_local_label_name() in bfd/coff-arm.c */
56 #ifndef REGISTER_PREFIX
57 #define REGISTER_PREFIX ""
60 #ifndef USER_LABEL_PREFIX
61 #define USER_LABEL_PREFIX "_"
64 #ifndef LOCAL_LABEL_PREFIX
65 #define LOCAL_LABEL_PREFIX ""
69 /* The assembler's names for the registers. */
70 #ifndef REGISTER_NAMES
71 #define REGISTER_NAMES \
73 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
74 "r8", "r9", "sl", "fp", "ip", "sp", "lr", "pc", \
75 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
80 #ifndef ADDITIONAL_REGISTER_NAMES
81 #define ADDITIONAL_REGISTER_NAMES \
93 {"rfp", 9}, /* Gcc used to call it this */ \
96 {"r10", 10}, /* sl */ \
97 {"r11", 11}, /* fp */ \
98 {"r12", 12}, /* ip */ \
99 {"r13", 13}, /* sp */ \
100 {"r14", 14}, /* lr */ \
101 {"r15", 15} /* pc */ \
105 /* Arm Assembler barfs on dollars */
106 #define DOLLARS_IN_IDENTIFIERS 0
108 #ifndef NO_DOLLAR_IN_LABEL
109 #define NO_DOLLAR_IN_LABEL 1
112 /* Generate DBX debugging information. riscix.h will undefine this because
113 the native assembler does not support stabs. */
114 #ifndef DBX_DEBUGGING_INFO
115 #define DBX_DEBUGGING_INFO 1
118 /* Acorn dbx moans about continuation chars, so don't use any. */
119 #ifndef DBX_CONTIN_LENGTH
120 #define DBX_CONTIN_LENGTH 0
123 /* Output a source filename for the debugger. RISCiX dbx insists that the
124 ``desc'' field is set to compiler version number >= 315 (sic). */
125 #define DBX_OUTPUT_MAIN_SOURCE_FILENAME(STREAM, NAME) \
128 fprintf (STREAM, ".stabs "); \
129 output_quoted_string (STREAM, NAME); \
130 fprintf (STREAM, ",%d,0,315,%s\n", N_SO, <ext_label_name[1]); \
132 ASM_OUTPUT_INTERNAL_LABEL (STREAM, "Ltext", 0); \
136 /* Output a function label definition. */
137 #ifndef ASM_DECLARE_FUNCTION_NAME
138 #define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL) \
141 ARM_DECLARE_FUNCTION_NAME (STREAM, NAME, DECL); \
142 ASM_OUTPUT_LABEL (STREAM, NAME); \
147 #ifndef ASM_OUTPUT_LABEL
148 #define ASM_OUTPUT_LABEL(STREAM, NAME) \
151 assemble_name (STREAM,NAME); \
152 fputs (":\n", STREAM); \
157 /* Output a globalising directive for a label. */
158 #ifndef ASM_GLOBALIZE_LABEL
159 #define ASM_GLOBALIZE_LABEL(STREAM, NAME) \
162 fprintf (STREAM, "\t.global\t"); \
163 assemble_name (STREAM, NAME); \
164 fputc ('\n',STREAM); \
169 /* Make an internal label into a string. */
170 #ifndef ASM_GENERATE_INTERNAL_LABEL
171 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM) \
172 sprintf (STRING, "*%s%s%u", LOCAL_LABEL_PREFIX, PREFIX, (unsigned int)(NUM))
175 /* Construct a private name. */
176 #define ASM_FORMAT_PRIVATE_NAME(OUTVAR, NAME, NUMBER) \
177 ((OUTVAR) = (char *) alloca (strlen (NAME) + 10), \
178 sprintf (OUTVAR, "%s.%d", NAME, NUMBER))
180 /* Output an element of a dispatch table. */
181 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \
182 asm_fprintf (STREAM, "\t.word\t%LL%d\n", VALUE)
184 #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \
185 asm_fprintf (STREAM, "\tb\t%LL%d\n", VALUE)
187 /* Output various types of constants. For real numbers we output hex, with
188 a comment containing the "human" value, this allows us to pass NaN's which
189 the riscix assembler doesn't understand (it also makes cross-assembling
190 less likely to fail). */
192 #define ASM_OUTPUT_LONG_DOUBLE(STREAM, VALUE) \
197 REAL_VALUE_TO_TARGET_LONG_DOUBLE (VALUE, l); \
198 REAL_VALUE_TO_DECIMAL (VALUE, "%.20g", dstr); \
199 asm_fprintf (STREAM, \
200 "\t.long 0x%lx,0x%lx,0x%lx\t%@ long double %s\n", \
201 l[0], l[1], l[2], dstr); \
205 #define ASM_OUTPUT_DOUBLE(STREAM, VALUE) \
210 REAL_VALUE_TO_TARGET_DOUBLE (VALUE, l); \
211 REAL_VALUE_TO_DECIMAL (VALUE, "%.14g", dstr); \
212 asm_fprintf (STREAM, "\t.long 0x%lx, 0x%lx\t%@ double %s\n", l[0],\
217 #define ASM_OUTPUT_FLOAT(STREAM, VALUE) \
222 REAL_VALUE_TO_TARGET_SINGLE (VALUE, l); \
223 REAL_VALUE_TO_DECIMAL (VALUE, "%.7g", dstr); \
224 asm_fprintf (STREAM, "\t.word 0x%lx\t%@ float %s\n", l, \
229 #undef ASM_OUTPUT_ASCII
230 #define ASM_OUTPUT_ASCII(STREAM, PTR, LEN) \
231 output_ascii_pseudo_op (STREAM, (const unsigned char *)(PTR), LEN)
233 /* Output a gap. In fact we fill it with nulls. */
234 #undef ASM_OUTPUT_SKIP
235 #define ASM_OUTPUT_SKIP(STREAM, NBYTES) \
236 fprintf (STREAM, "\t.space\t%d\n", NBYTES)
238 /* Align output to a power of two. Horrible /bin/as. */
239 #ifndef ASM_OUTPUT_ALIGN
240 #define ASM_OUTPUT_ALIGN(STREAM, POWER) \
243 register int amount = 1 << (POWER); \
246 fprintf (STREAM, "\t.even\n"); \
247 else if (amount != 1) \
248 fprintf (STREAM, "\t.align\t%d\n", amount - 4); \
253 /* Output a common block */
254 #ifndef ASM_OUTPUT_COMMON
255 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) \
258 fprintf (STREAM, "\t.comm\t"); \
259 assemble_name (STREAM, NAME); \
260 asm_fprintf (STREAM, ", %d\t%@ %d\n", \
266 /* Output a local common block. /bin/as can't do this, so hack a
267 `.space' into the bss segment. Note that this is *bad* practice,
268 which is guaranteed NOT to work since it doesn't define STATIC
269 COMMON space but merely STATIC BSS space. */
270 #ifndef ASM_OUTPUT_ALIGNED_LOCAL
271 #define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN) \
275 ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT)); \
276 ASM_OUTPUT_LABEL (STREAM, NAME); \
277 fprintf (STREAM, "\t.space\t%d\n", SIZE); \
282 /* Output a zero-initialized block. */
283 #ifndef ASM_OUTPUT_ALIGNED_BSS
284 #define ASM_OUTPUT_ALIGNED_BSS(STREAM, DECL, NAME, SIZE, ALIGN) \
285 asm_output_aligned_bss (STREAM, DECL, NAME, SIZE, ALIGN)
288 /* Output a source line for the debugger. */
289 /* #define ASM_OUTPUT_SOURCE_LINE(STREAM,LINE) */
291 /* Output a #ident directive. */
292 #ifndef ASM_OUTPUT_IDENT
293 #define ASM_OUTPUT_IDENT(STREAM,STRING) \
294 asm_fprintf (STREAM, "%@ - - - ident %s\n", STRING)
297 #ifndef ASM_COMMENT_START
298 #define ASM_COMMENT_START "@"
301 /* This works for GAS and some other assemblers. */
302 #define SET_ASM_OP "\t.set\t"