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/* Target definitions for GNU compiler for Intel 80386 using ELF
Copyright (C) 1988, 1991, 1995, 2000, 2001 Free Software Foundation, Inc.
Derived from sysv4.h written by Ron Guilmette (rfg@netcom.com).
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Use stabs instead of DWARF debug format. */
#undef PREFERRED_DEBUGGING_TYPE
#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
#undef TARGET_VERSION
#define TARGET_VERSION fprintf (stderr, " (i386 bare ELF target)");
/* By default, target has a 80387, uses IEEE compatible arithmetic,
and returns float values in the 387. */
#define TARGET_SUBTARGET_DEFAULT (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS)
/* The ELF ABI for the i386 says that records and unions are returned
in memory. */
#undef RETURN_IN_MEMORY
#define RETURN_IN_MEMORY(TYPE) \
(TYPE_MODE (TYPE) == BLKmode \
|| (VECTOR_MODE_P (TYPE_MODE (TYPE)) && int_size_in_bytes (TYPE) == 8))
/* This used to define X86, but james@bigtex.cactus.org says that
is supposed to be defined optionally by user programs--not by default. */
#define CPP_PREDEFINES ""
#undef CPP_SPEC
#define CPP_SPEC "%(cpp_cpu)"
#define ENDFILE_SPEC "crtend.o%s"
#define STARTFILE_SPEC "%{!shared: \
%{!symbolic: \
%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}}\
crtbegin.o%s"
/* This is how to output assembly code to define a `float' constant.
We always have to use a .long pseudo-op to do this because the native
SVR4 ELF assembler is buggy and it generates incorrect values when we
try to use the .float pseudo-op instead. */
#undef ASM_OUTPUT_FLOAT
#define ASM_OUTPUT_FLOAT(FILE,VALUE) \
do { long value; \
REAL_VALUE_TO_TARGET_SINGLE ((VALUE), value); \
if (sizeof (int) == sizeof (long)) \
fprintf((FILE), "%s0x%x\n", ASM_LONG, (int) value); \
else \
fprintf((FILE), "%s0x%lx\n", ASM_LONG, value); \
} while (0)
/* This is how to output assembly code to define a `double' constant.
We always have to use a pair of .long pseudo-ops to do this because
the native SVR4 ELF assembler is buggy and it generates incorrect
values when we try to use the the .double pseudo-op instead. */
#undef ASM_OUTPUT_DOUBLE
#define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
do { long value[2]; \
REAL_VALUE_TO_TARGET_DOUBLE ((VALUE), value); \
if (sizeof (int) == sizeof (long)) \
{ \
fprintf((FILE), "%s0x%x\n", ASM_LONG, (int) value[0]); \
fprintf((FILE), "%s0x%x\n", ASM_LONG, (int) value[1]); \
} \
else \
{ \
fprintf((FILE), "%s0x%lx\n", ASM_LONG, value[0]); \
fprintf((FILE), "%s0x%lx\n", ASM_LONG, value[1]); \
} \
} while (0)
#undef ASM_OUTPUT_LONG_DOUBLE
#define ASM_OUTPUT_LONG_DOUBLE(FILE,VALUE) \
do { long value[3]; \
REAL_VALUE_TO_TARGET_LONG_DOUBLE ((VALUE), value); \
if (sizeof (int) == sizeof (long)) \
{ \
fprintf((FILE), "%s0x%x\n", ASM_LONG, (int) value[0]); \
fprintf((FILE), "%s0x%x\n", ASM_LONG, (int) value[1]); \
fprintf((FILE), "%s0x%x\n", ASM_LONG, (int) value[2]); \
} \
else \
{ \
fprintf((FILE), "%s0x%lx\n", ASM_LONG, value[0]); \
fprintf((FILE), "%s0x%lx\n", ASM_LONG, value[1]); \
fprintf((FILE), "%s0x%lx\n", ASM_LONG, value[2]); \
} \
} while (0)
#undef DBX_REGISTER_NUMBER
#define DBX_REGISTER_NUMBER(n) \
(TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
/* The routine used to output sequences of byte values. We use a special
version of this for most svr4 targets because doing so makes the
generated assembly code more compact (and thus faster to assemble)
as well as more readable. Note that if we find subparts of the
character sequence which end with NUL (and which are shorter than
STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING. */
#undef ASM_OUTPUT_ASCII
#define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \
do \
{ \
register const unsigned char *_ascii_bytes = \
(const unsigned char *) (STR); \
register const unsigned char *limit = _ascii_bytes + (LENGTH); \
register unsigned bytes_in_chunk = 0; \
for (; _ascii_bytes < limit; _ascii_bytes++) \
{ \
register const unsigned char *p; \
if (bytes_in_chunk >= 64) \
{ \
fputc ('\n', (FILE)); \
bytes_in_chunk = 0; \
} \
for (p = _ascii_bytes; p < limit && *p != '\0'; p++) \
continue; \
if (p < limit && (p - _ascii_bytes) <= (long) STRING_LIMIT) \
{ \
if (bytes_in_chunk > 0) \
{ \
fputc ('\n', (FILE)); \
bytes_in_chunk = 0; \
} \
ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes); \
_ascii_bytes = p; \
} \
else \
{ \
if (bytes_in_chunk == 0) \
fprintf ((FILE), "\t.byte\t"); \
else \
fputc (',', (FILE)); \
fprintf ((FILE), "0x%02x", *_ascii_bytes); \
bytes_in_chunk += 5; \
} \
} \
if (bytes_in_chunk > 0) \
fprintf ((FILE), "\n"); \
} \
while (0)
#define LOCAL_LABEL_PREFIX "."
/* Switch into a generic section. */
#define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
/* If defined, a C expression whose value is a string containing the
assembler operation to identify the following data as
uninitialized global data. If not defined, and neither
`ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
uninitialized global data will be output in the data section if
`-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
used. */
#undef BSS_SECTION_ASM_OP
#define BSS_SECTION_ASM_OP "\t.section\t.bss"
/* Like `ASM_OUTPUT_BSS' except takes the required alignment as a
separate, explicit argument. If you define this macro, it is used
in place of `ASM_OUTPUT_BSS', and gives you more flexibility in
handling the required alignment of the variable. The alignment is
specified as the number of bits.
Try to use function `asm_output_aligned_bss' defined in file
`varasm.c' when defining this macro. */
#undef ASM_OUTPUT_ALIGNED_BSS
#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
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