1/* Common definitions for Intel 386 and AMD x86-64 systems using
2 GNU userspace. Copyright (C) 2012-2017 Free Software Foundation, Inc.
3 Contributed by Ilya Enkovich.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 3, or (at your option)
10any later version.
11
12GCC is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING3. If not see
19<http://www.gnu.org/licenses/>. */
20
21/* The svr4 ABI for the i386 says that records and unions are returned
22 in memory. In the 64bit compilation we will turn this flag off in
23 ix86_option_override_internal, as we never do pcc_struct_return
24 scheme on this target. */
25#undef DEFAULT_PCC_STRUCT_RETURN
26#define DEFAULT_PCC_STRUCT_RETURN 1
27
28/* We arrange for the whole %fs segment to map the tls area. */
29#undef TARGET_TLS_DIRECT_SEG_REFS_DEFAULT
30#define TARGET_TLS_DIRECT_SEG_REFS_DEFAULT MASK_TLS_DIRECT_SEG_REFS
31
32#define TARGET_OS_CPP_BUILTINS() \
33 do \
34 { \
35 GNU_USER_TARGET_OS_CPP_BUILTINS(); \
36 } \
37 while (0)
38
39#undef CPP_SPEC
40#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
41
42#undef GNU_USER_TARGET_CC1_SPEC
43#define GNU_USER_TARGET_CC1_SPEC "%(cc1_cpu) %{profile:-p}"
44
45#undef CC1_SPEC
46#define CC1_SPEC GNU_USER_TARGET_CC1_SPEC
47
48/* Similar to standard GNU userspace, but adding -ffast-math support. */
49#define GNU_USER_TARGET_MATHFILE_SPEC \
50 "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
51 %{mpc32:crtprec32.o%s} \
52 %{mpc64:crtprec64.o%s} \
53 %{mpc80:crtprec80.o%s}"
54
55#undef ENDFILE_SPEC
56#define ENDFILE_SPEC \
57 GNU_USER_TARGET_MATHFILE_SPEC " " \
58 GNU_USER_TARGET_ENDFILE_SPEC
59
60#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
61
62/* The stack pointer needs to be moved while checking the stack. */
63#define STACK_CHECK_MOVING_SP 1
64
65/* Static stack checking is supported by means of probes. */
66#define STACK_CHECK_STATIC_BUILTIN 1
67
68/* We only build the -fsplit-stack support in libgcc if the
69 assembler has full support for the CFI directives. */
70#if HAVE_GAS_CFI_PERSONALITY_DIRECTIVE
71#define TARGET_CAN_SPLIT_STACK
72#endif
73