gcc/config/nds32/linux.h

   1 /* Definitions of target machine of Andes NDS32 cpu for GNU compiler
   2    Copyright (C) 2012-2024 Free Software Foundation, Inc.
   3    Contributed by Andes Technology Corporation.
   4
   5    This file is part of GCC.
   6
   7    GCC is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published
   9    by the Free Software Foundation; either version 3, or (at your
  10    option) any later version.
  11
  12    GCC is distributed in the hope that it will be useful, but WITHOUT
  13    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  15    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
  22 /* ------------------------------------------------------------------------ */
  23
  24 #define TARGET_LINUX_ABI 1
  25
  26 #undef  SIZE_TYPE
  27 #define SIZE_TYPE "unsigned int"
  28
  29 #undef  PTRDIFF_TYPE
  30 #define PTRDIFF_TYPE "int"
  31
  32 #define TARGET_OS_CPP_BUILTINS()                \
  33   do                                            \
  34     {                                           \
  35       GNU_USER_TARGET_OS_CPP_BUILTINS();           \
  36     }                                           \
  37   while (0)
  38
  39 #ifdef TARGET_BIG_ENDIAN_DEFAULT
  40 #define LD_SO_ENDIAN_SPEC "%{mlittle-endian:le}%{!mlittle-endian:be}"
  41 #else
  42 #define LD_SO_ENDIAN_SPEC "%{mbig-endian:be}%{!mbig-endian:le}"
  43 #endif
  44
  45 /* Record arch version in TARGET_ARCH_DEFAULT.
  46    0 means soft ABI;
  47    1 means hard ABI and using full floating-point instruction;
  48    2 means hard ABI and only using single-precision floating-point
  49    instruction.  */
  50 #if TARGET_ARCH_DEFAULT
  51 #define LD_SO_ABI_SPEC "%{!mabi=2:f}"
  52 #else
  53 #define LD_SO_ABI_SPEC "%{mabi=2fp+:f}"
  54 #endif
  55
  56 #define GLIBC_DYNAMIC_LINKER \
  57   "/lib/ld-linux-nds32" LD_SO_ENDIAN_SPEC LD_SO_ABI_SPEC ".so.1"
  58
  59 /* In the configure stage we may use options --enable-default-relax,
  60    --enable-Os-default-ifc and --enable-Os-default-ex9.  They effect
  61    the default spec of passing --relax, --mifc, and --mex9 to linker.
  62    We use NDS32_RELAX_SPEC, NDS32_IFC_SPEC, and NDS32_EX9_SPEC
  63    so that we can customize them conveniently.  */
  64 #define LINK_SPEC \
  65  " %{G*}" \
  66  " %{mbig-endian:-EB} %{mlittle-endian:-EL}" \
  67  " %{shared:-shared} \
  68   %{!shared: \
  69     %{!static: \
  70       %{rdynamic:-export-dynamic} \
  71       -dynamic-linker " GNU_USER_DYNAMIC_LINKER "} \
  72     %{static:-static}}" \
  73   NDS32_RELAX_SPEC
  74
  75 #define LINK_PIE_SPEC "%{pie:%{!fno-pie:%{!fno-PIE:%{!static:-pie}}}} "
  76
  77 #define CPP_SPEC "%{pthread:-D_REENTRANT}"
  78
  79 /* The SYNC operations are implemented as library functions, not
  80    INSN patterns.  As a result, the HAVE defines for the patterns are
  81    not defined.  We need to define them to generate the corresponding
  82    __GCC_HAVE_SYNC_COMPARE_AND_SWAP_* and __GCC_ATOMIC_*_LOCK_FREE
  83    defines.
  84    Ref: https://sourceware.org/ml/libc-alpha/2014-09/msg00322.html  */
  85 #define HAVE_sync_compare_and_swapqi 1
  86 #define HAVE_sync_compare_and_swaphi 1
  87 #define HAVE_sync_compare_and_swapsi 1