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 ASM_APP_ON
  24 #define ASM_APP_ON              ""
  25 #endif
  26 #ifndef ASM_APP_OFF
  27 #define ASM_APP_OFF             ""
  28 #endif
  29
  30 /* Switch to the text or data segment.  */
  31 #define TEXT_SECTION_ASM_OP     "\t.text"
  32 #define DATA_SECTION_ASM_OP     "\t.data"
  33 #define BSS_SECTION_ASM_OP      "\t.bss"
  34
  35 /* Note: If USER_LABEL_PREFIX or LOCAL_LABEL_PREFIX are changed,
  36    make sure that this change is reflected in the function
  37    coff_arm_is_local_label_name() in bfd/coff-arm.c.  */
  38 #ifndef REGISTER_PREFIX
  39 #define REGISTER_PREFIX         ""
  40 #endif
  41
  42 #ifndef USER_LABEL_PREFIX
  43 #define USER_LABEL_PREFIX       "_"
  44 #endif
  45
  46 #ifndef LOCAL_LABEL_PREFIX
  47 #define LOCAL_LABEL_PREFIX      ""
  48 #endif
  49
  50 /* The assembler's names for the registers.  */
  51 #ifndef REGISTER_NAMES
  52 #define REGISTER_NAMES                             \
  53 {                                                  \
  54   "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",  \
  55   "r8", "r9", "sl", "fp", "ip", "sp", "lr", "pc",  \
  56   "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",  \
  57   "cc", "sfp", "afp",                              \
  58   "mv0",   "mv1",   "mv2",   "mv3",                \
  59   "mv4",   "mv5",   "mv6",   "mv7",                \
  60   "mv8",   "mv9",   "mv10",  "mv11",               \
  61   "mv12",  "mv13",  "mv14",  "mv15",               \
  62   "wcgr0", "wcgr1", "wcgr2", "wcgr3",              \
  63   "wr0",   "wr1",   "wr2",   "wr3",                \
  64   "wr4",   "wr5",   "wr6",   "wr7",                \
  65   "wr8",   "wr9",   "wr10",  "wr11",               \
  66   "wr12",  "wr13",  "wr14",  "wr15"                \
  67 }
  68 #endif
  69
  70 #ifndef ADDITIONAL_REGISTER_NAMES
  71 #define ADDITIONAL_REGISTER_NAMES               \
  72 {                                               \
  73   {"a1", 0},                                    \
  74   {"a2", 1},                                    \
  75   {"a3", 2},                                    \
  76   {"a4", 3},                                    \
  77   {"v1", 4},                                    \
  78   {"v2", 5},                                    \
  79   {"v3", 6},                                    \
  80   {"v4", 7},                                    \
  81   {"v5", 8},                                    \
  82   {"v6", 9},                                    \
  83   {"rfp", 9}, /* Gcc used to call it this */    \
  84   {"sb", 9},                                    \
  85   {"v7", 10},                                   \
  86   {"r10", 10},  /* sl */                        \
  87   {"r11", 11},  /* fp */                        \
  88   {"r12", 12},  /* ip */                        \
  89   {"r13", 13},  /* sp */                        \
  90   {"r14", 14},  /* lr */                        \
  91   {"r15", 15},  /* pc */                        \
  92   {"mvf0", 27},                                 \
  93   {"mvf1", 28},                                 \
  94   {"mvf2", 29},                                 \
  95   {"mvf3", 30},                                 \
  96   {"mvf4", 31},                                 \
  97   {"mvf5", 32},                                 \
  98   {"mvf6", 33},                                 \
  99   {"mvf7", 34},                                 \
 100   {"mvf8", 35},                                 \
 101   {"mvf9", 36},                                 \
 102   {"mvf10", 37},                                \
 103   {"mvf11", 38},                                \
 104   {"mvf12", 39},                                \
 105   {"mvf13", 40},                                \
 106   {"mvf14", 41},                                \
 107   {"mvf15", 42},                                \
 108   {"mvd0", 27},                                 \
 109   {"mvd1", 28},                                 \
 110   {"mvd2", 29},                                 \
 111   {"mvd3", 30},                                 \
 112   {"mvd4", 31},                                 \
 113   {"mvd5", 32},                                 \
 114   {"mvd6", 33},                                 \
 115   {"mvd7", 34},                                 \
 116   {"mvd8", 35},                                 \
 117   {"mvd9", 36},                                 \
 118   {"mvd10", 37},                                \
 119   {"mvd11", 38},                                \
 120   {"mvd12", 39},                                \
 121   {"mvd13", 40},                                \
 122   {"mvd14", 41},                                \
 123   {"mvd15", 42},                                \
 124   {"mvfx0", 27},                                \
 125   {"mvfx1", 28},                                \
 126   {"mvfx2", 29},                                \
 127   {"mvfx3", 30},                                \
 128   {"mvfx4", 31},                                \
 129   {"mvfx5", 32},                                \
 130   {"mvfx6", 33},                                \
 131   {"mvfx7", 34},                                \
 132   {"mvfx8", 35},                                \
 133   {"mvfx9", 36},                                \
 134   {"mvfx10", 37},                               \
 135   {"mvfx11", 38},                               \
 136   {"mvfx12", 39},                               \
 137   {"mvfx13", 40},                               \
 138   {"mvfx14", 41},                               \
 139   {"mvfx15", 42},                               \
 140   {"mvdx0", 27},                                \
 141   {"mvdx1", 28},                                \
 142   {"mvdx2", 29},                                \
 143   {"mvdx3", 30},                                \
 144   {"mvdx4", 31},                                \
 145   {"mvdx5", 32},                                \
 146   {"mvdx6", 33},                                \
 147   {"mvdx7", 34},                                \
 148   {"mvdx8", 35},                                \
 149   {"mvdx9", 36},                                \
 150   {"mvdx10", 37},                               \
 151   {"mvdx11", 38},                               \
 152   {"mvdx12", 39},                               \
 153   {"mvdx13", 40},                               \
 154   {"mvdx14", 41},                               \
 155   {"mvdx15", 42}                                \
 156 }
 157 #endif
 158
 159 /* Arm Assembler barfs on dollars.  */
 160 #define DOLLARS_IN_IDENTIFIERS 0
 161
 162 #ifndef NO_DOLLAR_IN_LABEL
 163 #define NO_DOLLAR_IN_LABEL 1
 164 #endif
 165
 166 /* Generate DBX debugging information.  riscix.h will undefine this because
 167    the native assembler does not support stabs.  */
 168 #define DBX_DEBUGGING_INFO 1
 169
 170 /* Acorn dbx moans about continuation chars, so don't use any.  */
 171 #ifndef DBX_CONTIN_LENGTH
 172 #define DBX_CONTIN_LENGTH  0
 173 #endif
 174
 175 /* Output a source filename for the debugger. RISCiX dbx insists that the
 176    ``desc'' field is set to compiler version number >= 315 (sic).  */
 177 #define DBX_OUTPUT_MAIN_SOURCE_FILENAME(STREAM, NAME)                   \
 178   do                                                                    \
 179     {                                                                   \
 180       fprintf (STREAM, ".stabs ");                                      \
 181       output_quoted_string (STREAM, NAME);                              \
 182       fprintf (STREAM, ",%d,0,315,%s\n", N_SO, &ltext_label_name[1]);   \
 183       text_section ();                                                  \
 184       (*targetm.asm_out.internal_label) (STREAM, "Ltext", 0);                   \
 185     }                                                                   \
 186   while (0)
 187
 188 /* Output a function label definition.  */
 189 #ifndef ASM_DECLARE_FUNCTION_NAME
 190 #define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL)   \
 191   do                                                    \
 192     {                                                   \
 193       ARM_DECLARE_FUNCTION_NAME (STREAM, NAME, DECL);   \
 194       ASM_OUTPUT_LABEL (STREAM, NAME);                  \
 195     }                                                   \
 196   while (0)
 197 #endif
 198
 199 /* Globalizing directive for a label.  */
 200 #define GLOBAL_ASM_OP "\t.global\t"
 201
 202 /* Make an internal label into a string.  */
 203 #ifndef ASM_GENERATE_INTERNAL_LABEL
 204 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)  \
 205   sprintf (STRING, "*%s%s%u", LOCAL_LABEL_PREFIX, PREFIX, (unsigned int)(NUM))
 206 #endif
 207
 208 /* Output an element of a dispatch table.  */
 209 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE)  \
 210   asm_fprintf (STREAM, "\t.word\t%LL%d\n", VALUE)
 211
 212 #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL)              \
 213   do                                                                    \
 214     {                                                                   \
 215       if (TARGET_ARM)                                                   \
 216         asm_fprintf (STREAM, "\tb\t%LL%d\n", VALUE);                    \
 217       else                                                              \
 218         asm_fprintf (STREAM, "\t.word\t%LL%d-%LL%d\n", VALUE, REL);     \
 219     }                                                                   \
 220   while (0)
 221
 222
 223 #undef  ASM_OUTPUT_ASCII
 224 #define ASM_OUTPUT_ASCII(STREAM, PTR, LEN)  \
 225   output_ascii_pseudo_op (STREAM, (const unsigned char *) (PTR), LEN)
 226
 227 /* Output a gap.  In fact we fill it with nulls.  */
 228 #undef  ASM_OUTPUT_SKIP
 229 #define ASM_OUTPUT_SKIP(STREAM, NBYTES)         \
 230   fprintf (STREAM, "\t.space\t%d\n", (int) (NBYTES))
 231
 232 /* Align output to a power of two.  Horrible /bin/as.  */
 233 #ifndef ASM_OUTPUT_ALIGN
 234 #define ASM_OUTPUT_ALIGN(STREAM, POWER)                 \
 235   do                                                    \
 236     {                                                   \
 237       register int amount = 1 << (POWER);               \
 238                                                         \
 239       if (amount == 2)                                  \
 240         fprintf (STREAM, "\t.even\n");                  \
 241       else if (amount != 1)                             \
 242         fprintf (STREAM, "\t.align\t%d\n", amount - 4); \
 243     }                                                   \
 244   while (0)
 245 #endif
 246
 247 /* Output a common block.  */
 248 #ifndef ASM_OUTPUT_COMMON
 249 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)  \
 250   do                                                    \
 251     {                                                   \
 252       fprintf (STREAM, "\t.comm\t");                    \
 253       assemble_name (STREAM, NAME);                     \
 254       asm_fprintf (STREAM, ", %d\t%@ %d\n",             \
 255                    (int)(ROUNDED), (int)(SIZE));        \
 256     }                                                   \
 257   while (0)
 258 #endif
 259
 260 /* Output a local common block.  /bin/as can't do this, so hack a
 261    `.space' into the bss segment.  Note that this is *bad* practice,
 262    which is guaranteed NOT to work since it doesn't define STATIC
 263    COMMON space but merely STATIC BSS space.  */
 264 #ifndef ASM_OUTPUT_ALIGNED_LOCAL
 265 #define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN)             \
 266   do                                                                    \
 267     {                                                                   \
 268       bss_section ();                                                   \
 269       ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT));    \
 270       ASM_OUTPUT_LABEL (STREAM, NAME);                                  \
 271       fprintf (STREAM, "\t.space\t%d\n", (int)(SIZE));                  \
 272     }                                                                   \
 273   while (0)
 274 #endif
 275
 276 /* Output a zero-initialized block.  */
 277 #ifndef ASM_OUTPUT_ALIGNED_BSS
 278 #define ASM_OUTPUT_ALIGNED_BSS(STREAM, DECL, NAME, SIZE, ALIGN) \
 279   asm_output_aligned_bss (STREAM, DECL, NAME, SIZE, ALIGN)
 280 #endif
 281
 282 /* Output a #ident directive.  */
 283 #ifndef ASM_OUTPUT_IDENT
 284 #define ASM_OUTPUT_IDENT(STREAM,STRING)  \
 285   asm_fprintf (STREAM, "%@ - - - ident %s\n", STRING)
 286 #endif
 287
 288 #ifndef ASM_COMMENT_START
 289 #define ASM_COMMENT_START       "@"
 290 #endif
 291
 292 /* This works for GAS and some other assemblers.  */
 293 #define SET_ASM_OP              "\t.set\t"