1 /* Definitions of target machine for GNU compiler, for ARM with a.out 2 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2004, 2007, 2008 3 Free Software Foundation, Inc. 4 Contributed by Richard Earnshaw (rearnsha@armltd.co.uk). 5 6 This file is part of GCC. 7 8 GCC is free software; you can redistribute it and/or modify it 9 under the terms of the GNU General Public License as published 10 by the Free Software Foundation; either version 3, or (at your 11 option) any later version. 12 13 GCC is distributed in the hope that it will be useful, but WITHOUT 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 16 License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GCC; see the file COPYING3. If not see 20 <http://www.gnu.org/licenses/>. */ 21 22 #ifndef ASM_APP_ON 23 #define ASM_APP_ON "" 24 #endif 25 #ifndef ASM_APP_OFF 26 #define ASM_APP_OFF "" 27 #endif 28 29 /* Switch to the text or data segment. */ 30 #define TEXT_SECTION_ASM_OP "\t.text" 31 #define DATA_SECTION_ASM_OP "\t.data" 32 #define BSS_SECTION_ASM_OP "\t.bss" 33 34 /* Note: If USER_LABEL_PREFIX or LOCAL_LABEL_PREFIX are changed, 35 make sure that this change is reflected in the function 36 coff_arm_is_local_label_name() in bfd/coff-arm.c. */ 37 #ifndef REGISTER_PREFIX 38 #define REGISTER_PREFIX "" 39 #endif 40 41 #ifndef USER_LABEL_PREFIX 42 #define USER_LABEL_PREFIX "_" 43 #endif 44 45 #ifndef LOCAL_LABEL_PREFIX 46 #define LOCAL_LABEL_PREFIX "" 47 #endif 48 49 /* The assembler's names for the registers. Note that the ?xx registers are 50 there so that VFPv3/NEON registers D16-D31 have the same spacing as D0-D15 51 (each of which is overlaid on two S registers), although there are no 52 actual single-precision registers which correspond to D16-D31. */ 53 #ifndef REGISTER_NAMES 54 #define REGISTER_NAMES \ 55 { \ 56 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ 57 "r8", "r9", "sl", "fp", "ip", "sp", "lr", "pc", \ 58 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \ 59 "cc", "sfp", "afp", \ 60 "mv0", "mv1", "mv2", "mv3", \ 61 "mv4", "mv5", "mv6", "mv7", \ 62 "mv8", "mv9", "mv10", "mv11", \ 63 "mv12", "mv13", "mv14", "mv15", \ 64 "wcgr0", "wcgr1", "wcgr2", "wcgr3", \ 65 "wr0", "wr1", "wr2", "wr3", \ 66 "wr4", "wr5", "wr6", "wr7", \ 67 "wr8", "wr9", "wr10", "wr11", \ 68 "wr12", "wr13", "wr14", "wr15", \ 69 "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7", \ 70 "s8", "s9", "s10", "s11", "s12", "s13", "s14", "s15", \ 71 "s16", "s17", "s18", "s19", "s20", "s21", "s22", "s23", \ 72 "s24", "s25", "s26", "s27", "s28", "s29", "s30", "s31", \ 73 "d16", "?16", "d17", "?17", "d18", "?18", "d19", "?19", \ 74 "d20", "?20", "d21", "?21", "d22", "?22", "d23", "?23", \ 75 "d24", "?24", "d25", "?25", "d26", "?26", "d27", "?27", \ 76 "d28", "?28", "d29", "?29", "d30", "?30", "d31", "?31", \ 77 "vfpcc" \ 78 } 79 #endif 80 81 #ifndef ADDITIONAL_REGISTER_NAMES 82 #define ADDITIONAL_REGISTER_NAMES \ 83 { \ 84 {"a1", 0}, \ 85 {"a2", 1}, \ 86 {"a3", 2}, \ 87 {"a4", 3}, \ 88 {"v1", 4}, \ 89 {"v2", 5}, \ 90 {"v3", 6}, \ 91 {"v4", 7}, \ 92 {"v5", 8}, \ 93 {"v6", 9}, \ 94 {"rfp", 9}, /* Gcc used to call it this */ \ 95 {"sb", 9}, \ 96 {"v7", 10}, \ 97 {"r10", 10}, /* sl */ \ 98 {"r11", 11}, /* fp */ \ 99 {"r12", 12}, /* ip */ \ 100 {"r13", 13}, /* sp */ \ 101 {"r14", 14}, /* lr */ \ 102 {"r15", 15}, /* pc */ \ 103 {"mvf0", 27}, \ 104 {"mvf1", 28}, \ 105 {"mvf2", 29}, \ 106 {"mvf3", 30}, \ 107 {"mvf4", 31}, \ 108 {"mvf5", 32}, \ 109 {"mvf6", 33}, \ 110 {"mvf7", 34}, \ 111 {"mvf8", 35}, \ 112 {"mvf9", 36}, \ 113 {"mvf10", 37}, \ 114 {"mvf11", 38}, \ 115 {"mvf12", 39}, \ 116 {"mvf13", 40}, \ 117 {"mvf14", 41}, \ 118 {"mvf15", 42}, \ 119 {"mvd0", 27}, \ 120 {"mvd1", 28}, \ 121 {"mvd2", 29}, \ 122 {"mvd3", 30}, \ 123 {"mvd4", 31}, \ 124 {"mvd5", 32}, \ 125 {"mvd6", 33}, \ 126 {"mvd7", 34}, \ 127 {"mvd8", 35}, \ 128 {"mvd9", 36}, \ 129 {"mvd10", 37}, \ 130 {"mvd11", 38}, \ 131 {"mvd12", 39}, \ 132 {"mvd13", 40}, \ 133 {"mvd14", 41}, \ 134 {"mvd15", 42}, \ 135 {"mvfx0", 27}, \ 136 {"mvfx1", 28}, \ 137 {"mvfx2", 29}, \ 138 {"mvfx3", 30}, \ 139 {"mvfx4", 31}, \ 140 {"mvfx5", 32}, \ 141 {"mvfx6", 33}, \ 142 {"mvfx7", 34}, \ 143 {"mvfx8", 35}, \ 144 {"mvfx9", 36}, \ 145 {"mvfx10", 37}, \ 146 {"mvfx11", 38}, \ 147 {"mvfx12", 39}, \ 148 {"mvfx13", 40}, \ 149 {"mvfx14", 41}, \ 150 {"mvfx15", 42}, \ 151 {"mvdx0", 27}, \ 152 {"mvdx1", 28}, \ 153 {"mvdx2", 29}, \ 154 {"mvdx3", 30}, \ 155 {"mvdx4", 31}, \ 156 {"mvdx5", 32}, \ 157 {"mvdx6", 33}, \ 158 {"mvdx7", 34}, \ 159 {"mvdx8", 35}, \ 160 {"mvdx9", 36}, \ 161 {"mvdx10", 37}, \ 162 {"mvdx11", 38}, \ 163 {"mvdx12", 39}, \ 164 {"mvdx13", 40}, \ 165 {"mvdx14", 41}, \ 166 {"mvdx15", 42}, \ 167 {"d0", 63}, {"q0", 63}, \ 168 {"d1", 65}, \ 169 {"d2", 67}, {"q1", 67}, \ 170 {"d3", 69}, \ 171 {"d4", 71}, {"q2", 71}, \ 172 {"d5", 73}, \ 173 {"d6", 75}, {"q3", 75}, \ 174 {"d7", 77}, \ 175 {"d8", 79}, {"q4", 79}, \ 176 {"d9", 81}, \ 177 {"d10", 83}, {"q5", 83}, \ 178 {"d11", 85}, \ 179 {"d12", 87}, {"q6", 87}, \ 180 {"d13", 89}, \ 181 {"d14", 91}, {"q7", 91}, \ 182 {"d15", 93}, \ 183 {"q8", 95}, \ 184 {"q9", 99}, \ 185 {"q10", 103}, \ 186 {"q11", 107}, \ 187 {"q12", 111}, \ 188 {"q13", 115}, \ 189 {"q14", 119}, \ 190 {"q15", 123} \ 191 } 192 #endif 193 194 #ifndef NO_DOLLAR_IN_LABEL 195 #define NO_DOLLAR_IN_LABEL 1 196 #endif 197 198 /* Generate DBX debugging information. riscix.h will undefine this because 199 the native assembler does not support stabs. */ 200 #define DBX_DEBUGGING_INFO 1 201 202 /* Acorn dbx moans about continuation chars, so don't use any. */ 203 #ifndef DBX_CONTIN_LENGTH 204 #define DBX_CONTIN_LENGTH 0 205 #endif 206 207 /* Output a function label definition. */ 208 #ifndef ASM_DECLARE_FUNCTION_NAME 209 #define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL) \ 210 do \ 211 { \ 212 ARM_DECLARE_FUNCTION_NAME (STREAM, NAME, DECL); \ 213 ASM_OUTPUT_LABEL (STREAM, NAME); \ 214 } \ 215 while (0) 216 #endif 217 218 /* Globalizing directive for a label. */ 219 #define GLOBAL_ASM_OP "\t.global\t" 220 221 /* Make an internal label into a string. */ 222 #ifndef ASM_GENERATE_INTERNAL_LABEL 223 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM) \ 224 sprintf (STRING, "*%s%s%u", LOCAL_LABEL_PREFIX, PREFIX, (unsigned int)(NUM)) 225 #endif 226 227 /* Output an element of a dispatch table. */ 228 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \ 229 do \ 230 { \ 231 gcc_assert (!TARGET_THUMB2); \ 232 asm_fprintf (STREAM, "\t.word\t%LL%d\n", VALUE); \ 233 } \ 234 while (0) 235 236 237 /* Thumb-2 always uses addr_diff_elf so that the Table Branch instructions 238 can be used. For non-pic code where the offsets do not suitable for 239 TBB/TBH the elements are output as absolute labels. */ 240 #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \ 241 do \ 242 { \ 243 if (TARGET_ARM) \ 244 asm_fprintf (STREAM, "\tb\t%LL%d\n", VALUE); \ 245 else if (TARGET_THUMB1) \ 246 { \ 247 if (flag_pic || optimize_size) \ 248 { \ 249 switch (GET_MODE(body)) \ 250 { \ 251 case QImode: \ 252 asm_fprintf (STREAM, "\t.byte\t(%LL%d-%LL%d)/2\n", \ 253 VALUE, REL); \ 254 break; \ 255 case HImode: /* TBH */ \ 256 asm_fprintf (STREAM, "\t.2byte\t(%LL%d-%LL%d)/2\n", \ 257 VALUE, REL); \ 258 break; \ 259 case SImode: \ 260 asm_fprintf (STREAM, "\t.word\t%LL%d-%LL%d\n", \ 261 VALUE, REL); \ 262 break; \ 263 default: \ 264 gcc_unreachable(); \ 265 } \ 266 } \ 267 else \ 268 asm_fprintf (STREAM, "\t.word\t%LL%d+1\n", VALUE); \ 269 } \ 270 else /* Thumb-2 */ \ 271 { \ 272 switch (GET_MODE(body)) \ 273 { \ 274 case QImode: /* TBB */ \ 275 asm_fprintf (STREAM, "\t.byte\t(%LL%d-%LL%d)/2\n", \ 276 VALUE, REL); \ 277 break; \ 278 case HImode: /* TBH */ \ 279 asm_fprintf (STREAM, "\t.2byte\t(%LL%d-%LL%d)/2\n", \ 280 VALUE, REL); \ 281 break; \ 282 case SImode: \ 283 if (flag_pic) \ 284 asm_fprintf (STREAM, "\t.word\t%LL%d+1-%LL%d\n", VALUE, REL); \ 285 else \ 286 asm_fprintf (STREAM, "\t.word\t%LL%d+1\n", VALUE); \ 287 break; \ 288 default: \ 289 gcc_unreachable(); \ 290 } \ 291 } \ 292 } \ 293 while (0) 294 295 296 #undef ASM_OUTPUT_ASCII 297 #define ASM_OUTPUT_ASCII(STREAM, PTR, LEN) \ 298 output_ascii_pseudo_op (STREAM, (const unsigned char *) (PTR), LEN) 299 300 /* Output a gap. In fact we fill it with nulls. */ 301 #undef ASM_OUTPUT_SKIP 302 #define ASM_OUTPUT_SKIP(STREAM, NBYTES) \ 303 fprintf (STREAM, "\t.space\t%d\n", (int) (NBYTES)) 304 305 /* Align output to a power of two. Horrible /bin/as. */ 306 #ifndef ASM_OUTPUT_ALIGN 307 #define ASM_OUTPUT_ALIGN(STREAM, POWER) \ 308 do \ 309 { \ 310 register int amount = 1 << (POWER); \ 311 \ 312 if (amount == 2) \ 313 fprintf (STREAM, "\t.even\n"); \ 314 else if (amount != 1) \ 315 fprintf (STREAM, "\t.align\t%d\n", amount - 4); \ 316 } \ 317 while (0) 318 #endif 319 320 /* Output a common block. */ 321 #ifndef ASM_OUTPUT_COMMON 322 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) \ 323 do \ 324 { \ 325 fprintf (STREAM, "\t.comm\t"); \ 326 assemble_name (STREAM, NAME); \ 327 asm_fprintf (STREAM, ", %d\t%@ %d\n", \ 328 (int)(ROUNDED), (int)(SIZE)); \ 329 } \ 330 while (0) 331 #endif 332 333 /* Output a local common block. /bin/as can't do this, so hack a 334 `.space' into the bss segment. Note that this is *bad* practice, 335 which is guaranteed NOT to work since it doesn't define STATIC 336 COMMON space but merely STATIC BSS space. */ 337 #ifndef ASM_OUTPUT_ALIGNED_LOCAL 338 #define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN) \ 339 do \ 340 { \ 341 switch_to_section (bss_section); \ 342 ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT)); \ 343 ASM_OUTPUT_LABEL (STREAM, NAME); \ 344 fprintf (STREAM, "\t.space\t%d\n", (int)(SIZE)); \ 345 } \ 346 while (0) 347 #endif 348 349 /* Output a zero-initialized block. */ 350 #ifndef ASM_OUTPUT_ALIGNED_BSS 351 #define ASM_OUTPUT_ALIGNED_BSS(STREAM, DECL, NAME, SIZE, ALIGN) \ 352 asm_output_aligned_bss (STREAM, DECL, NAME, SIZE, ALIGN) 353 #endif 354 355 /* Output a #ident directive. */ 356 #ifndef ASM_OUTPUT_IDENT 357 #define ASM_OUTPUT_IDENT(STREAM,STRING) \ 358 asm_fprintf (STREAM, "%@ - - - ident %s\n", STRING) 359 #endif 360 361 #ifndef ASM_COMMENT_START 362 #define ASM_COMMENT_START "@" 363 #endif 364 365 /* This works for GAS and some other assemblers. */ 366 #define SET_ASM_OP "\t.set\t" 367