gcc/config/arm/aout.h

   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).
   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 2, 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 COPYING.  If not, write to
  20    the Free Software Foundation, 59 Temple Place - Suite 330,
  21    Boston, MA 02111-1307, USA.  */
  22
  23 #ifndef ARM_OS_NAME
  24 #define ARM_OS_NAME "(generic)"
  25 #endif
  26
  27 /* The text to go at the start of the assembler file.  */
  28 #ifndef ASM_FILE_START
  29 #define ASM_FILE_START(STREAM)              \
  30 {                                           \
  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"); \
  38 }
  39 #endif
  40
  41 #ifndef ASM_APP_ON
  42 #define ASM_APP_ON              ""
  43 #endif
  44 #ifndef ASM_APP_OFF
  45 #define ASM_APP_OFF             ""
  46 #endif
  47
  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"
  52
  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         ""
  58 #endif
  59
  60 #ifndef USER_LABEL_PREFIX
  61 #define USER_LABEL_PREFIX       "_"
  62 #endif
  63
  64 #ifndef LOCAL_LABEL_PREFIX
  65 #define LOCAL_LABEL_PREFIX      ""
  66 #endif
  67
  68
  69 /* The assembler's names for the registers.  */
  70 #ifndef REGISTER_NAMES
  71 #define REGISTER_NAMES                             \
  72 {                                                  \
  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",  \
  76   "cc", "sfp", "afp",                              \
  77   "mv0",  "mv1",   "mv2",  "mv3",  "mv4",   "mv5", \
  78   "mv6",  "mv7",   "mv8",  "mv9",  "mv10",  "mv11",\
  79   "mv12", "mv13",  "mv14", "mv15"                  \
  80 }
  81 #endif
  82
  83 #ifndef ADDITIONAL_REGISTER_NAMES
  84 #define ADDITIONAL_REGISTER_NAMES               \
  85 {                                               \
  86   {"a1", 0},                                    \
  87   {"a2", 1},                                    \
  88   {"a3", 2},                                    \
  89   {"a4", 3},                                    \
  90   {"v1", 4},                                    \
  91   {"v2", 5},                                    \
  92   {"v3", 6},                                    \
  93   {"v4", 7},                                    \
  94   {"v5", 8},                                    \
  95   {"v6", 9},                                    \
  96   {"rfp", 9}, /* Gcc used to call it this */    \
  97   {"sb", 9},                                    \
  98   {"v7", 10},                                   \
  99   {"r10", 10},  /* sl */                        \
 100   {"r11", 11},  /* fp */                        \
 101   {"r12", 12},  /* ip */                        \
 102   {"r13", 13},  /* sp */                        \
 103   {"r14", 14},  /* lr */                        \
 104   {"r15", 15},  /* pc */                        \
 105   {"mvf0", 27},                                 \
 106   {"mvf1", 28},                                 \
 107   {"mvf2", 29},                                 \
 108   {"mvf3", 30},                                 \
 109   {"mvf4", 31},                                 \
 110   {"mvf5", 32},                                 \
 111   {"mvf6", 33},                                 \
 112   {"mvf7", 34},                                 \
 113   {"mvf8", 35},                                 \
 114   {"mvf9", 36},                                 \
 115   {"mvf10", 37},                                \
 116   {"mvf11", 38},                                \
 117   {"mvf12", 39},                                \
 118   {"mvf13", 40},                                \
 119   {"mvf14", 41},                                \
 120   {"mvf15", 42},                                \
 121   {"mvd0", 27},                                 \
 122   {"mvd1", 28},                                 \
 123   {"mvd2", 29},                                 \
 124   {"mvd3", 30},                                 \
 125   {"mvd4", 31},                                 \
 126   {"mvd5", 32},                                 \
 127   {"mvd6", 33},                                 \
 128   {"mvd7", 34},                                 \
 129   {"mvd8", 35},                                 \
 130   {"mvd9", 36},                                 \
 131   {"mvd10", 37},                                \
 132   {"mvd11", 38},                                \
 133   {"mvd12", 39},                                \
 134   {"mvd13", 40},                                \
 135   {"mvd14", 41},                                \
 136   {"mvd15", 42},                                \
 137   {"mvfx0", 27},                                \
 138   {"mvfx1", 28},                                \
 139   {"mvfx2", 29},                                \
 140   {"mvfx3", 30},                                \
 141   {"mvfx4", 31},                                \
 142   {"mvfx5", 32},                                \
 143   {"mvfx6", 33},                                \
 144   {"mvfx7", 34},                                \
 145   {"mvfx8", 35},                                \
 146   {"mvfx9", 36},                                \
 147   {"mvfx10", 37},                               \
 148   {"mvfx11", 38},                               \
 149   {"mvfx12", 39},                               \
 150   {"mvfx13", 40},                               \
 151   {"mvfx14", 41},                               \
 152   {"mvfx15", 42},                               \
 153   {"mvdx0", 27},                                \
 154   {"mvdx1", 28},                                \
 155   {"mvdx2", 29},                                \
 156   {"mvdx3", 30},                                \
 157   {"mvdx4", 31},                                \
 158   {"mvdx5", 32},                                \
 159   {"mvdx6", 33},                                \
 160   {"mvdx7", 34},                                \
 161   {"mvdx8", 35},                                \
 162   {"mvdx9", 36},                                \
 163   {"mvdx10", 37},                               \
 164   {"mvdx11", 38},                               \
 165   {"mvdx12", 39},                               \
 166   {"mvdx13", 40},                               \
 167   {"mvdx14", 41},                               \
 168   {"mvdx15", 42}                                \
 169 }
 170 #endif
 171
 172 /* Arm Assembler barfs on dollars.  */
 173 #define DOLLARS_IN_IDENTIFIERS 0
 174
 175 #ifndef NO_DOLLAR_IN_LABEL
 176 #define NO_DOLLAR_IN_LABEL 1
 177 #endif
 178
 179 /* Generate DBX debugging information.  riscix.h will undefine this because
 180    the native assembler does not support stabs.  */
 181 #define DBX_DEBUGGING_INFO 1
 182
 183 /* Acorn dbx moans about continuation chars, so don't use any.  */
 184 #ifndef DBX_CONTIN_LENGTH
 185 #define DBX_CONTIN_LENGTH  0
 186 #endif
 187
 188 /* Output a source filename for the debugger. RISCiX dbx insists that the
 189    ``desc'' field is set to compiler version number >= 315 (sic).  */
 190 #define DBX_OUTPUT_MAIN_SOURCE_FILENAME(STREAM, NAME)                   \
 191   do                                                                    \
 192     {                                                                   \
 193       fprintf (STREAM, ".stabs ");                                      \
 194       output_quoted_string (STREAM, NAME);                              \
 195       fprintf (STREAM, ",%d,0,315,%s\n", N_SO, &ltext_label_name[1]);   \
 196       text_section ();                                                  \
 197       (*targetm.asm_out.internal_label) (STREAM, "Ltext", 0);                   \
 198     }                                                                   \
 199   while (0)
 200
 201 /* Output a function label definition.  */
 202 #ifndef ASM_DECLARE_FUNCTION_NAME
 203 #define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL)   \
 204   do                                                    \
 205     {                                                   \
 206       ARM_DECLARE_FUNCTION_NAME (STREAM, NAME, DECL);   \
 207       ASM_OUTPUT_LABEL (STREAM, NAME);                  \
 208     }                                                   \
 209   while (0)
 210 #endif
 211
 212 /* Globalizing directive for a label.  */
 213 #define GLOBAL_ASM_OP "\t.global\t"
 214
 215 /* Make an internal label into a string.  */
 216 #ifndef ASM_GENERATE_INTERNAL_LABEL
 217 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)  \
 218   sprintf (STRING, "*%s%s%u", LOCAL_LABEL_PREFIX, PREFIX, (unsigned int)(NUM))
 219 #endif
 220
 221 /* Output an element of a dispatch table.  */
 222 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE)  \
 223   asm_fprintf (STREAM, "\t.word\t%LL%d\n", VALUE)
 224
 225 #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL)              \
 226   do                                                                    \
 227     {                                                                   \
 228       if (TARGET_ARM)                                                   \
 229         asm_fprintf (STREAM, "\tb\t%LL%d\n", VALUE);                    \
 230       else                                                              \
 231         asm_fprintf (STREAM, "\t.word\t%LL%d-%LL%d\n", VALUE, REL);     \
 232     }                                                                   \
 233   while (0)
 234
 235
 236 #undef  ASM_OUTPUT_ASCII
 237 #define ASM_OUTPUT_ASCII(STREAM, PTR, LEN)  \
 238   output_ascii_pseudo_op (STREAM, (const unsigned char *)(PTR), LEN)
 239
 240 /* Output a gap.  In fact we fill it with nulls.  */
 241 #undef  ASM_OUTPUT_SKIP
 242 #define ASM_OUTPUT_SKIP(STREAM, NBYTES)         \
 243   fprintf (STREAM, "\t.space\t%d\n", NBYTES)
 244
 245 /* Align output to a power of two.  Horrible /bin/as.  */
 246 #ifndef ASM_OUTPUT_ALIGN
 247 #define ASM_OUTPUT_ALIGN(STREAM, POWER)                 \
 248   do                                                    \
 249     {                                                   \
 250       register int amount = 1 << (POWER);               \
 251                                                         \
 252       if (amount == 2)                                  \
 253         fprintf (STREAM, "\t.even\n");                  \
 254       else if (amount != 1)                             \
 255         fprintf (STREAM, "\t.align\t%d\n", amount - 4); \
 256     }                                                   \
 257   while (0)
 258 #endif
 259
 260 /* Output a common block.  */
 261 #ifndef ASM_OUTPUT_COMMON
 262 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)  \
 263   do                                                    \
 264     {                                                   \
 265       fprintf (STREAM, "\t.comm\t");                    \
 266       assemble_name (STREAM, NAME);                     \
 267       asm_fprintf (STREAM, ", %d\t%@ %d\n",             \
 268                    ROUNDED, SIZE);                      \
 269     }                                                   \
 270   while (0)
 271 #endif
 272
 273 /* Output a local common block.  /bin/as can't do this, so hack a
 274    `.space' into the bss segment.  Note that this is *bad* practice,
 275    which is guaranteed NOT to work since it doesn't define STATIC
 276    COMMON space but merely STATIC BSS space.  */
 277 #ifndef ASM_OUTPUT_ALIGNED_LOCAL
 278 #define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN)             \
 279   do                                                                    \
 280     {                                                                   \
 281       bss_section ();                                                   \
 282       ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT));    \
 283       ASM_OUTPUT_LABEL (STREAM, NAME);                                  \
 284       fprintf (STREAM, "\t.space\t%d\n", SIZE);                         \
 285     }                                                                   \
 286   while (0)
 287 #endif
 288
 289 /* Output a zero-initialized block.  */
 290 #ifndef ASM_OUTPUT_ALIGNED_BSS
 291 #define ASM_OUTPUT_ALIGNED_BSS(STREAM, DECL, NAME, SIZE, ALIGN) \
 292   asm_output_aligned_bss (STREAM, DECL, NAME, SIZE, ALIGN)
 293 #endif
 294
 295 /* Output a source line for the debugger.  */
 296 /* #define ASM_OUTPUT_SOURCE_LINE(STREAM,LINE) */
 297
 298 /* Output a #ident directive.  */
 299 #ifndef ASM_OUTPUT_IDENT
 300 #define ASM_OUTPUT_IDENT(STREAM,STRING)  \
 301   asm_fprintf (STREAM, "%@ - - - ident %s\n", STRING)
 302 #endif
 303
 304 #ifndef ASM_COMMENT_START
 305 #define ASM_COMMENT_START       "@"
 306 #endif
 307
 308 /* This works for GAS and some other assemblers.  */
 309 #define SET_ASM_OP              "\t.set\t"