| /* Definitions of target machine for GNU compiler, |
| for Alpha Linux-based GNU systems. |
| Copyright (C) 1996-2022 Free Software Foundation, Inc. |
| Contributed by Richard Henderson. |
| |
| 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 ("__gnu_linux__"); \ |
| builtin_define ("_LONGLONG"); \ |
| builtin_define_std ("linux"); \ |
| builtin_define_std ("unix"); \ |
| builtin_assert ("system=linux"); \ |
| builtin_assert ("system=unix"); \ |
| builtin_assert ("system=posix"); \ |
| /* The GNU C++ standard library requires this. */ \ |
| if (c_dialect_cxx ()) \ |
| builtin_define ("_GNU_SOURCE"); \ |
| } while (0) |
| |
| #undef LIB_SPEC |
| #define LIB_SPEC \ |
| "%{pthread:-lpthread} \ |
| %{shared:-lc} \ |
| %{!shared: %{profile:-lc_p}%{!profile:-lc}}" |
| |
| #undef CPP_SPEC |
| #define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}" |
| |
| /* Show that we need a GP when profiling. */ |
| #undef TARGET_PROFILING_NEEDS_GP |
| #define TARGET_PROFILING_NEEDS_GP 1 |
| |
| /* Don't care about faults in the prologue. */ |
| #undef TARGET_CAN_FAULT_IN_PROLOGUE |
| #define TARGET_CAN_FAULT_IN_PROLOGUE 1 |
| |
| /* OS fixes up EV5 data fault on prefetch. */ |
| #undef TARGET_FIXUP_EV5_PREFETCH |
| #define TARGET_FIXUP_EV5_PREFETCH 1 |
| |
| #undef WCHAR_TYPE |
| #define WCHAR_TYPE "int" |
| |
| #ifdef SINGLE_LIBC |
| #define OPTION_GLIBC_P(opts) (DEFAULT_LIBC == LIBC_GLIBC) |
| #define OPTION_UCLIBC_P(opts) (DEFAULT_LIBC == LIBC_UCLIBC) |
| #define OPTION_BIONIC_P(opts) (DEFAULT_LIBC == LIBC_BIONIC) |
| #undef OPTION_MUSL_P |
| #define OPTION_MUSL_P(opts) (DEFAULT_LIBC == LIBC_MUSL) |
| #else |
| #define OPTION_GLIBC_P(opts) ((opts)->x_linux_libc == LIBC_GLIBC) |
| #define OPTION_UCLIBC_P(opts) ((opts)->x_linux_libc == LIBC_UCLIBC) |
| #define OPTION_BIONIC_P(opts) ((opts)->x_linux_libc == LIBC_BIONIC) |
| #undef OPTION_MUSL_P |
| #define OPTION_MUSL_P(opts) ((opts)->x_linux_libc == LIBC_MUSL) |
| #endif |
| #define OPTION_GLIBC OPTION_GLIBC_P (&global_options) |
| #define OPTION_UCLIBC OPTION_UCLIBC_P (&global_options) |
| #define OPTION_BIONIC OPTION_BIONIC_P (&global_options) |
| #undef OPTION_MUSL |
| #define OPTION_MUSL OPTION_MUSL_P (&global_options) |
| |
| /* Determine what functions are present at the runtime; |
| this includes full c99 runtime and sincos. */ |
| #undef TARGET_LIBC_HAS_FUNCTION |
| #define TARGET_LIBC_HAS_FUNCTION linux_libc_has_function |
| |
| #define TARGET_POSIX_IO |
| |
| /* Provide a STARTFILE_SPEC appropriate for ELF. Here we add the |
| (even more) magical crtbegin.o file which provides part of the |
| support for getting C++ file-scope static object constructed |
| before entering `main'. */ |
| |
| #undef STARTFILE_SPEC |
| #ifdef HAVE_LD_PIE |
| #define STARTFILE_SPEC \ |
| "%{!shared: %{pg|p:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}}\ |
| crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}" |
| #else |
| #define STARTFILE_SPEC \ |
| "%{!shared: %{pg|p:gcrt1.o%s;:crt1.o%s}}\ |
| crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}" |
| #endif |
| |
| /* Provide a ENDFILE_SPEC appropriate for ELF. Here we tack on the |
| magical crtend.o file which provides part of the support for |
| getting C++ file-scope static object constructed before entering |
| `main', followed by a normal ELF "finalizer" file, `crtn.o'. */ |
| |
| #undef ENDFILE_SPEC |
| #define ENDFILE_SPEC \ |
| "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \ |
| %{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s" |
| |
| #define LINK_GCC_C_SEQUENCE_SPEC \ |
| "%{static|static-pie:--start-group} %G %{!nolibc:%L} \ |
| %{static|static-pie:--end-group}%{!static:%{!static-pie:%G}}" |
| |
| /* Use --as-needed -lgcc_s for eh support. */ |
| #ifdef HAVE_LD_AS_NEEDED |
| #define USE_LD_AS_NEEDED 1 |
| #endif |
| |
| /* Define if long doubles should be mangled as 'g'. */ |
| #define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING |
| |
| /* -mcpu=native handling only makes sense with compiler running on |
| an Alpha chip. */ |
| #if defined(__alpha__) || defined(__alpha) |
| extern const char *host_detect_local_cpu (int argc, const char **argv); |
| # define EXTRA_SPEC_FUNCTIONS \ |
| { "local_cpu_detect", host_detect_local_cpu }, |
| |
| # define MCPU_MTUNE_NATIVE_SPECS \ |
| " %{mcpu=native:%<mcpu=native %:local_cpu_detect(cpu)}" \ |
| " %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}" |
| #else |
| # define MCPU_MTUNE_NATIVE_SPECS "" |
| #endif |
| |
| #define DRIVER_SELF_SPECS MCPU_MTUNE_NATIVE_SPECS |