gcc/config/i386/gnu-user-common.h

/* Common definitions for Intel 386 and AMD x86-64 systems using
   GNU userspace.  Copyright (C) 2012-2021 Free Software Foundation, Inc.
   Contributed by Ilya Enkovich.

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/>.  */

/* The svr4 ABI for the i386 says that records and unions are returned
   in memory.  In the 64bit compilation we will turn this flag off in
   ix86_option_override_internal, as we never do pcc_struct_return
   scheme on this target.  */
#undef DEFAULT_PCC_STRUCT_RETURN
#define DEFAULT_PCC_STRUCT_RETURN 1

/* We arrange for the whole %fs segment to map the tls area.  */
#undef TARGET_TLS_DIRECT_SEG_REFS_DEFAULT
#define TARGET_TLS_DIRECT_SEG_REFS_DEFAULT MASK_TLS_DIRECT_SEG_REFS

#define TARGET_OS_CPP_BUILTINS()				\
  do								\
    {								\
	GNU_USER_TARGET_OS_CPP_BUILTINS();			\
    }								\
  while (0)

#undef CPP_SPEC
#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"

#undef GNU_USER_TARGET_CC1_SPEC
#define GNU_USER_TARGET_CC1_SPEC "%(cc1_cpu) %{profile:-p}"

#undef CC1_SPEC
#define CC1_SPEC GNU_USER_TARGET_CC1_SPEC

/* Similar to standard GNU userspace, but adding -ffast-math support.  */
#define GNU_USER_TARGET_MATHFILE_SPEC \
  "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
   %{mpc32:crtprec32.o%s} \
   %{mpc64:crtprec64.o%s} \
   %{mpc80:crtprec80.o%s}"

#undef  ENDFILE_SPEC
#define ENDFILE_SPEC \
  GNU_USER_TARGET_MATHFILE_SPEC " " \
  GNU_USER_TARGET_ENDFILE_SPEC

#define TARGET_ASM_FILE_END file_end_indicate_exec_stack

/* The stack pointer needs to be moved while checking the stack.  */
#define STACK_CHECK_MOVING_SP 1

/* Static stack checking is supported by means of probes.  */
#define STACK_CHECK_STATIC_BUILTIN 1

/* We only build the -fsplit-stack support in libgcc if the
   assembler has full support for the CFI directives.  */
#if HAVE_GAS_CFI_PERSONALITY_DIRECTIVE
#define TARGET_CAN_SPLIT_STACK
#endif