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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [config/] [i386/] [sysv4.h] - Blame information for rev 154

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/* Target definitions for GCC for Intel 80386 running System V.4
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   Copyright (C) 1991, 2001, 2002, 2007 Free Software Foundation, Inc.
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   Written by Ron Guilmette (rfg@netcom.com).
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3.  If not see
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<http://www.gnu.org/licenses/>.  */
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#define TARGET_VERSION fprintf (stderr, " (i386 System V Release 4)");
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/* The svr4 ABI for the i386 says that records and unions are returned
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   in memory.  */
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#undef RETURN_IN_MEMORY
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#define RETURN_IN_MEMORY(TYPE) \
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  (TYPE_MODE (TYPE) == BLKmode \
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   || (VECTOR_MODE_P (TYPE_MODE (TYPE)) && int_size_in_bytes (TYPE) == 8))
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/* Output at beginning of assembler file.  */
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/* The .file command should always begin the output.  */
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#define TARGET_ASM_FILE_START_FILE_DIRECTIVE true
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#undef X86_FILE_START_VERSION_DIRECTIVE
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#define X86_FILE_START_VERSION_DIRECTIVE true
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#undef DBX_REGISTER_NUMBER
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#define DBX_REGISTER_NUMBER(n)  svr4_dbx_register_map[n]
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/* The routine used to output sequences of byte values.  We use a special
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   version of this for most svr4 targets because doing so makes the
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   generated assembly code more compact (and thus faster to assemble)
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   as well as more readable.  Note that if we find subparts of the
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   character sequence which end with NUL (and which are shorter than
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   STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING.  */
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#undef ASM_OUTPUT_ASCII
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#define ASM_OUTPUT_ASCII(FILE, STR, LENGTH)                             \
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  do                                                                    \
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    {                                                                   \
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      const unsigned char *_ascii_bytes =                               \
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        (const unsigned char *) (STR);                                  \
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      const unsigned char *limit = _ascii_bytes + (LENGTH);             \
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      unsigned bytes_in_chunk = 0;                                       \
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      for (; _ascii_bytes < limit; _ascii_bytes++)                      \
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        {                                                               \
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          const unsigned char *p;                                       \
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          if (bytes_in_chunk >= 64)                                     \
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            {                                                           \
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              fputc ('\n', (FILE));                                     \
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              bytes_in_chunk = 0;                                        \
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            }                                                           \
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          for (p = _ascii_bytes; p < limit && *p != '\0'; p++)          \
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            continue;                                                   \
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          if (p < limit && (p - _ascii_bytes) <= (long) STRING_LIMIT)   \
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            {                                                           \
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              if (bytes_in_chunk > 0)                                    \
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                {                                                       \
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                  fputc ('\n', (FILE));                                 \
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                  bytes_in_chunk = 0;                                    \
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                }                                                       \
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              ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes);         \
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              _ascii_bytes = p;                                         \
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            }                                                           \
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          else                                                          \
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            {                                                           \
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              if (bytes_in_chunk == 0)                                   \
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                fprintf ((FILE), "\t.byte\t");                          \
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              else                                                      \
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                fputc (',', (FILE));                                    \
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              fprintf ((FILE), "0x%02x", *_ascii_bytes);                \
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              bytes_in_chunk += 5;                                      \
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            }                                                           \
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        }                                                               \
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      if (bytes_in_chunk > 0)                                            \
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        fprintf ((FILE), "\n");                                         \
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    }                                                                   \
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  while (0)
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/* A C statement (sans semicolon) to output to the stdio stream
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   FILE the assembler definition of uninitialized global DECL named
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   NAME whose size is SIZE bytes and alignment is ALIGN bytes.
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   Try to use asm_output_aligned_bss to implement this macro.  */
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#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
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  asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
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/* Handle special EH pointer encodings.  Absolute, pc-relative, and
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   indirect are handled automatically.  */
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#define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE) \
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  do {                                                                  \
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    if ((SIZE) == 4 && ((ENCODING) & 0x70) == DW_EH_PE_datarel)         \
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      {                                                                 \
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        fputs (ASM_LONG, FILE);                                         \
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        assemble_name (FILE, XSTR (ADDR, 0));                            \
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        fputs (((ENCODING) & DW_EH_PE_indirect ? "@GOT" : "@GOTOFF"), FILE); \
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        goto DONE;                                                      \
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      }                                                                 \
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  } while (0)
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/* Used by crtstuff.c to initialize the base of data-relative relocations.
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   These are GOT relative on x86, so return the pic register.  */
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#ifdef __PIC__
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#define CRT_GET_RFIB_DATA(BASE)                 \
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  {                                             \
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    register void *ebx_ __asm__("ebx");         \
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    BASE = ebx_;                                \
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  }
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#else
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#define CRT_GET_RFIB_DATA(BASE)                                         \
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  __asm__ ("call\t.LPR%=\n"                                             \
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           ".LPR%=:\n\t"                                                \
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           "popl\t%0\n\t"                                               \
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           /* Due to a GAS bug, this cannot use EAX.  That encodes      \
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              smaller than the traditional EBX, which results in the    \
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              offset being off by one.  */                              \
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           "addl\t$_GLOBAL_OFFSET_TABLE_+[.-.LPR%=],%0"                 \
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           : "=d"(BASE))
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#endif

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