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update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
author nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
date Tue, 22 Mar 2011 17:18:12 +0900
parents a06113de4d67
children 04ced10e8804
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67
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nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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1 /* Definitions for systems using the Linux kernel, with or without
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2 MMU, using ELF at the compiler level but possibly FLT for final
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3 linked executables and shared libraries in some no-MMU cases, and
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4 possibly with a choice of libc implementations.
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5 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2003, 2004, 2005, 2006,
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6 2007, 2009, 2010, 2011 Free Software Foundation, Inc.
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7 Contributed by Eric Youngdale.
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8 Modified for stabs-in-ELF by H.J. Lu (hjl@lucon.org).
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9
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10 This file is part of GCC.
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11
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12 GCC is free software; you can redistribute it and/or modify
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13 it under the terms of the GNU General Public License as published by
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14 the Free Software Foundation; either version 3, or (at your option)
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15 any later version.
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16
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17 GCC is distributed in the hope that it will be useful,
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18 but WITHOUT ANY WARRANTY; without even the implied warranty of
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19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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20 GNU General Public License for more details.
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21
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22 Under Section 7 of GPL version 3, you are granted additional
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23 permissions described in the GCC Runtime Library Exception, version
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24 3.1, as published by the Free Software Foundation.
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25
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26 You should have received a copy of the GNU General Public License and
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27 a copy of the GCC Runtime Library Exception along with this program;
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28 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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29 <http://www.gnu.org/licenses/>. */
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31 /* C libraries supported on Linux. */
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32 #ifdef SINGLE_LIBC
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33 #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
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34 #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
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35 #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
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36 #else
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37 #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
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38 #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
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39 #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
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40 #endif
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41
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42 #define LINUX_TARGET_OS_CPP_BUILTINS() \
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43 do { \
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44 if (OPTION_GLIBC) \
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45 builtin_define ("__gnu_linux__"); \
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46 builtin_define_std ("linux"); \
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47 builtin_define_std ("unix"); \
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48 builtin_assert ("system=linux"); \
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49 builtin_assert ("system=unix"); \
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50 builtin_assert ("system=posix"); \
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51 } while (0)
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52
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53 /* Determine which dynamic linker to use depending on whether GLIBC or
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54 uClibc or Bionic is the default C library and whether
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55 -muclibc or -mglibc or -mbionic has been passed to change the default. */
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57 #define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
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58 "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
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60 #if DEFAULT_LIBC == LIBC_GLIBC
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61 #define CHOOSE_DYNAMIC_LINKER(G, U, B) \
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62 CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
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63 #elif DEFAULT_LIBC == LIBC_UCLIBC
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64 #define CHOOSE_DYNAMIC_LINKER(G, U, B) \
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65 CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
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66 #elif DEFAULT_LIBC == LIBC_BIONIC
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67 #define CHOOSE_DYNAMIC_LINKER(G, U, B) \
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68 CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
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69 #else
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70 #error "Unsupported DEFAULT_LIBC"
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71 #endif /* DEFAULT_LIBC */
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72
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73 /* For most targets the following definitions suffice;
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74 GLIBC_DYNAMIC_LINKER must be defined for each target using them, or
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75 GLIBC_DYNAMIC_LINKER32 and GLIBC_DYNAMIC_LINKER64 for targets
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76 supporting both 32-bit and 64-bit compilation. */
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77 #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
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78 #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
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79 #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
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80 #define BIONIC_DYNAMIC_LINKER "/system/bin/linker"
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81 #define BIONIC_DYNAMIC_LINKER32 "/system/bin/linker"
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82 #define BIONIC_DYNAMIC_LINKER64 "/system/bin/linker64"
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83
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84 #define LINUX_DYNAMIC_LINKER \
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85 CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
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86 BIONIC_DYNAMIC_LINKER)
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87 #define LINUX_DYNAMIC_LINKER32 \
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88 CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
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89 BIONIC_DYNAMIC_LINKER32)
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90 #define LINUX_DYNAMIC_LINKER64 \
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91 CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
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92 BIONIC_DYNAMIC_LINKER64)
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93
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94 /* Determine whether the entire c99 runtime
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95 is present in the runtime library. */
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96 #define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
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97
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98 /* Whether we have sincos that follows the GNU extension. */
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99 #define TARGET_HAS_SINCOS (OPTION_GLIBC || OPTION_BIONIC)