1 | /* Common definitions for Intel 386 and AMD x86-64 systems using |
2 | GNU userspace. Copyright (C) 2012-2023 Free Software Foundation, Inc. |
3 | Contributed by Ilya Enkovich. |
4 | |
5 | This file is part of GCC. |
6 | |
7 | GCC is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by |
9 | the Free Software Foundation; either version 3, or (at your option) |
10 | any later version. |
11 | |
12 | GCC is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | GNU General Public License for more details. |
16 | |
17 | You should have received a copy of the GNU General Public License |
18 | along 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 | "%{mdaz-ftz:crtfastmath.o%s;Ofast|ffast-math|funsafe-math-optimizations:%{!shared:%{!mno-daz-ftz: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. Also |
70 | we only support -fsplit-stack on glibc targets. */ |
71 | #if (DEFAULT_LIBC == LIBC_GLIBC) && HAVE_GAS_CFI_PERSONALITY_DIRECTIVE |
72 | #define TARGET_CAN_SPLIT_STACK |
73 | #endif |
74 | |