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julius |
/* Target definitions for GCC for Intel 80386 using ELF
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Copyright (C) 1988, 1991, 1995, 2000, 2001, 2002, 2007
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Free Software Foundation, Inc.
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Derived from sysv4.h 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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/* Use stabs instead of DWARF debug format. */
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#undef PREFERRED_DEBUGGING_TYPE
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#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
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#define TARGET_VERSION fprintf (stderr, " (i386 bare ELF target)");
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/* By default, target has a 80387, uses IEEE compatible arithmetic,
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and returns float values in the 387. */
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#define TARGET_SUBTARGET_DEFAULT (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS)
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/* The ELF 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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#undef CPP_SPEC
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#define CPP_SPEC ""
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#define ENDFILE_SPEC "crtend.o%s"
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#define STARTFILE_SPEC "%{!shared: \
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%{!symbolic: \
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%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}}\
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crtbegin.o%s"
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#undef DBX_REGISTER_NUMBER
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#define DBX_REGISTER_NUMBER(n) \
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(TARGET_64BIT ? dbx64_register_map[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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#define LOCAL_LABEL_PREFIX "."
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/* Switch into a generic section. */
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#define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
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/* If defined, a C expression whose value is a string containing the
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assembler operation to identify the following data as
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uninitialized global data. If not defined, and neither
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`ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
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uninitialized global data will be output in the data section if
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`-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
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used. */
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#undef BSS_SECTION_ASM_OP
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#define BSS_SECTION_ASM_OP "\t.section\t.bss"
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/* Like `ASM_OUTPUT_BSS' except takes the required alignment as a
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separate, explicit argument. If you define this macro, it is used
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in place of `ASM_OUTPUT_BSS', and gives you more flexibility in
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handling the required alignment of the variable. The alignment is
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specified as the number of bits.
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Try to use function `asm_output_aligned_bss' defined in file
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`varasm.c' when defining this macro. */
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#undef ASM_OUTPUT_ALIGNED_BSS
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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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