| 1 | /* Common definitions for Intel 386 and AMD x86-64 systems using |
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| 2 | GNU userspace. Copyright (C) 2012-2023 Free Software Foundation, Inc. |
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| 3 | Contributed by Ilya Enkovich. |
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| 4 | |
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| 5 | This file is part of GCC. |
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| 6 | |
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| 7 | GCC is free software; you can redistribute it and/or modify |
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| 8 | it under the terms of the GNU General Public License as published by |
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| 9 | the Free Software Foundation; either version 3, or (at your option) |
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| 10 | any later version. |
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| 11 | |
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| 12 | GCC is distributed in the hope that it will be useful, |
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| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 15 | GNU General Public License for more details. |
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| 16 | |
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| 17 | You should have received a copy of the GNU General Public License |
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| 18 | along with GCC; see the file COPYING3. If not see |
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| 19 | <http://www.gnu.org/licenses/>. */ |
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| 20 | |
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| 21 | /* The svr4 ABI for the i386 says that records and unions are returned |
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| 22 | in memory. In the 64bit compilation we will turn this flag off in |
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| 23 | ix86_option_override_internal, as we never do pcc_struct_return |
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| 24 | scheme on this target. */ |
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| 25 | #undef DEFAULT_PCC_STRUCT_RETURN |
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| 26 | #define DEFAULT_PCC_STRUCT_RETURN 1 |
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| 27 | |
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| 28 | /* We arrange for the whole %fs segment to map the tls area. */ |
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| 29 | #undef TARGET_TLS_DIRECT_SEG_REFS_DEFAULT |
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| 30 | #define TARGET_TLS_DIRECT_SEG_REFS_DEFAULT MASK_TLS_DIRECT_SEG_REFS |
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| 31 | |
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| 32 | #define TARGET_OS_CPP_BUILTINS() \ |
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| 33 | do \ |
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| 34 | { \ |
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| 35 | GNU_USER_TARGET_OS_CPP_BUILTINS(); \ |
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| 36 | } \ |
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| 37 | while (0) |
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| 38 | |
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| 39 | #undef CPP_SPEC |
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| 40 | #define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}" |
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| 41 | |
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| 42 | #undef GNU_USER_TARGET_CC1_SPEC |
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| 43 | #define GNU_USER_TARGET_CC1_SPEC "%(cc1_cpu) %{profile:-p}" |
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| 44 | |
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| 45 | #undef CC1_SPEC |
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| 46 | #define CC1_SPEC GNU_USER_TARGET_CC1_SPEC |
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| 47 | |
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| 48 | /* Similar to standard GNU userspace, but adding -ffast-math support. */ |
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| 49 | #define GNU_USER_TARGET_MATHFILE_SPEC \ |
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| 50 | "%{mdaz-ftz:crtfastmath.o%s;Ofast|ffast-math|funsafe-math-optimizations:%{!shared:%{!mno-daz-ftz:crtfastmath.o%s}}} \ |
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| 51 | %{mpc32:crtprec32.o%s} \ |
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| 52 | %{mpc64:crtprec64.o%s} \ |
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| 53 | %{mpc80:crtprec80.o%s}" |
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| 54 | |
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| 55 | #undef ENDFILE_SPEC |
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| 56 | #define ENDFILE_SPEC \ |
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| 57 | GNU_USER_TARGET_MATHFILE_SPEC " " \ |
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| 58 | GNU_USER_TARGET_ENDFILE_SPEC |
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| 59 | |
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| 60 | #define TARGET_ASM_FILE_END file_end_indicate_exec_stack |
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| 61 | |
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| 62 | /* The stack pointer needs to be moved while checking the stack. */ |
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| 63 | #define STACK_CHECK_MOVING_SP 1 |
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| 64 | |
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| 65 | /* Static stack checking is supported by means of probes. */ |
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| 66 | #define STACK_CHECK_STATIC_BUILTIN 1 |
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| 67 | |
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| 68 | /* We only build the -fsplit-stack support in libgcc if the |
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| 69 | assembler has full support for the CFI directives. Also |
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| 70 | we only support -fsplit-stack on glibc targets. */ |
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| 71 | #if (DEFAULT_LIBC == LIBC_GLIBC) && HAVE_GAS_CFI_PERSONALITY_DIRECTIVE |
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| 72 | #define TARGET_CAN_SPLIT_STACK |
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| 73 | #endif |
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| 74 | |
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