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1 /* Definitions of target machine for GNU compiler,
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2 for Alpha Linux-based GNU systems.
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3 Copyright (C) 1996, 1997, 1998, 2002, 2003, 2004, 2005, 2006, 2007
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4 Free Software Foundation, Inc.
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5 Contributed by Richard Henderson.
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6
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7 This file is part of GCC.
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8
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9 GCC is free software; you can redistribute it and/or modify
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10 it under the terms of the GNU General Public License as published by
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11 the Free Software Foundation; either version 3, or (at your option)
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12 any later version.
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13
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14 GCC is distributed in the hope that it will be useful,
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15 but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 GNU General Public License for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with GCC; see the file COPYING3. If not see
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21 <http://www.gnu.org/licenses/>. */
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22
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23 #undef TARGET_DEFAULT
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24 #define TARGET_DEFAULT (MASK_FPREGS | MASK_GAS)
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25
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26 #define TARGET_OS_CPP_BUILTINS() \
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27 do { \
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28 builtin_define ("__gnu_linux__"); \
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29 builtin_define ("_LONGLONG"); \
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30 builtin_define_std ("linux"); \
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31 builtin_define_std ("unix"); \
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32 builtin_assert ("system=linux"); \
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33 builtin_assert ("system=unix"); \
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34 builtin_assert ("system=posix"); \
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35 /* The GNU C++ standard library requires this. */ \
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36 if (c_dialect_cxx ()) \
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37 builtin_define ("_GNU_SOURCE"); \
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38 } while (0)
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39
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40 #undef LIB_SPEC
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41 #define LIB_SPEC \
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42 "%{pthread:-lpthread} \
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43 %{shared:-lc} \
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44 %{!shared: %{profile:-lc_p}%{!profile:-lc}}"
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45
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46 #undef CPP_SPEC
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47 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
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48
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49 /* Show that we need a GP when profiling. */
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50 #undef TARGET_PROFILING_NEEDS_GP
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51 #define TARGET_PROFILING_NEEDS_GP 1
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52
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53 /* Don't care about faults in the prologue. */
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54 #undef TARGET_CAN_FAULT_IN_PROLOGUE
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55 #define TARGET_CAN_FAULT_IN_PROLOGUE 1
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56
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57 /* OS fixes up EV5 data fault on prefetch. */
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58 #undef TARGET_FIXUP_EV5_PREFETCH
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59 #define TARGET_FIXUP_EV5_PREFETCH 1
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60
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61 #undef WCHAR_TYPE
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62 #define WCHAR_TYPE "int"
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63
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64 /* Define this so that all GNU/Linux targets handle the same pragmas. */
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65 #define HANDLE_PRAGMA_PACK_PUSH_POP
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66
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67 /* Determine whether the entire c99 runtime is present in the
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68 runtime library. */
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69 #define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
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70
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71 /* Whether we have sincos that follows the GNU extension. */
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72 #define TARGET_HAS_SINCOS (OPTION_GLIBC)
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73
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74 #define TARGET_POSIX_IO
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75
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76 #define LINK_GCC_C_SEQUENCE_SPEC \
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77 "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
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78
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79 /* Use --as-needed -lgcc_s for eh support. */
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80 #ifdef HAVE_LD_AS_NEEDED
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81 #define USE_LD_AS_NEEDED 1
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82 #endif
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83
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84 #define MD_UNWIND_SUPPORT "config/alpha/linux-unwind.h"
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85
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86 /* Define if long doubles should be mangled as 'g'. */
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87 #define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING
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88
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89 /* -mcpu=native handling only makes sense with compiler running on
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90 an Alpha chip. */
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91 #if defined(__alpha__) || defined(__alpha)
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92 extern const char *host_detect_local_cpu (int argc, const char **argv);
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93 # define EXTRA_SPEC_FUNCTIONS \
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94 { "local_cpu_detect", host_detect_local_cpu },
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95
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96 # define MCPU_MTUNE_NATIVE_SPECS \
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97 " %{mcpu=native:%<mcpu=native %:local_cpu_detect(cpu)}" \
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98 " %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}"
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99 #else
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100 # define MCPU_MTUNE_NATIVE_SPECS ""
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101 #endif
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102
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103 #define DRIVER_SELF_SPECS MCPU_MTUNE_NATIVE_SPECS
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