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1 /* Definitions of target machine for GNU compiler.
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2 ARM Linux-based GNU systems version.
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2004, 2007
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4 Free Software Foundation, Inc.
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5 Contributed by Russell King <rmk92@ecs.soton.ac.uk>.
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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 it
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10 under the terms of the GNU General Public License as published
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11 by the Free Software Foundation; either version 3, or (at your
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12 option) any later version.
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13
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14 GCC is distributed in the hope that it will be useful, but WITHOUT
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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16 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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17 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 /* This is how we tell the assembler that a symbol is weak.
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24 GAS always supports weak symbols. */
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25
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26 /* Unsigned chars produces much better code than signed. */
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27 #define DEFAULT_SIGNED_CHAR 0
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28
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29 #undef SUBTARGET_CPP_SPEC
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30 #define SUBTARGET_CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
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31
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32 #undef SIZE_TYPE
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33 #define SIZE_TYPE "unsigned int"
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34
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35 #undef PTRDIFF_TYPE
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36 #define PTRDIFF_TYPE "int"
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37
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38 /* Use the AAPCS type for wchar_t, or the previous Linux default for
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39 non-AAPCS. */
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40 #undef WCHAR_TYPE
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41 #define WCHAR_TYPE (TARGET_AAPCS_BASED ? "unsigned int" : "long int")
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42
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43 #undef WCHAR_TYPE_SIZE
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44 #define WCHAR_TYPE_SIZE BITS_PER_WORD
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45
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46 /* Clear the instruction cache from `beg' to `end'. This makes an
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47 inline system call to SYS_cacheflush. */
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48 #define CLEAR_INSN_CACHE(BEG, END) \
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49 { \
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50 register unsigned long _beg __asm ("a1") = (unsigned long) (BEG); \
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51 register unsigned long _end __asm ("a2") = (unsigned long) (END); \
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52 register unsigned long _flg __asm ("a3") = 0; \
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53 __asm __volatile ("swi 0x9f0002 @ sys_cacheflush" \
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54 : "=r" (_beg) \
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55 : "0" (_beg), "r" (_end), "r" (_flg)); \
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56 }
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