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/* Definitions for LynxOS on i386.
Copyright (C) 1993-2015 Free Software Foundation, Inc.
This file is part of GCC.
GCC 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 3, or (at your option)
any later version.
GCC 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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
builtin_define ("__LITTLE_ENDIAN__"); \
builtin_define ("__x86__"); \
} \
while (0)
/* The svr4 ABI for the i386 says that records and unions are returned
in memory. */
#define DEFAULT_PCC_STRUCT_RETURN 1
/* BSS_SECTION_ASM_OP gets defined i386/unix.h. */
#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
/* LynxOS's GDB counts the floating point registers from 16. */
#undef DBX_REGISTER_NUMBER
#define DBX_REGISTER_NUMBER(n) \
(TARGET_64BIT ? dbx64_register_map[n] \
: (n) == 0 ? 0 \
: (n) == 1 ? 2 \
: (n) == 2 ? 1 \
: (n) == 3 ? 3 \
: (n) == 4 ? 6 \
: (n) == 5 ? 7 \
: (n) == 6 ? 5 \
: (n) == 7 ? 4 \
: ((n) >= FIRST_STACK_REG && (n) <= LAST_STACK_REG) ? (int) (n) + 8 \
: (-1))
/* A C statement to output to the stdio stream FILE an assembler
command to advance the location counter to a multiple of 1<<LOG
bytes if it is within MAX_SKIP bytes.
This is used to align code labels according to Intel recommendations. */
#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
do { \
if ((LOG) != 0) { \
if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
} \
} while (0)
#endif
/* Undefine SUBTARGET_EXTRA_SPECS it is empty anyway. We define it in
config/lynx.h. */
#undef SUBTARGET_EXTRA_SPECS
/* Undefine the definition from att.h to enable our default. */
#undef ASM_OUTPUT_ALIGN
/* Undefine the definition from elfos.h to enable our default. */
#undef PREFERRED_DEBUGGING_TYPE
/* The file i386.c defines TARGET_HAVE_TLS unconditionally if
HAVE_AS_TLS is defined. HAVE_AS_TLS is defined as gas support for
TLS is detected by configure. We undefine it here. */
#undef HAVE_AS_TLS
#define IX86_MAYBE_NO_LIBGCC_TFMODE
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