1 | /* |
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2 | (C) Copyright IBM Corp. 2007, 2008 |
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3 | |
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4 | All rights reserved. |
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5 | |
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6 | Redistribution and use in source and binary forms, with or without |
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7 | modification, are permitted provided that the following conditions are met: |
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8 | |
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9 | * Redistributions of source code must retain the above copyright notice, |
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10 | this list of conditions and the following disclaimer. |
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11 | * Redistributions in binary form must reproduce the above copyright |
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12 | notice, this list of conditions and the following disclaimer in the |
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13 | documentation and/or other materials provided with the distribution. |
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14 | * Neither the name of IBM nor the names of its contributors may be |
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15 | used to endorse or promote products derived from this software without |
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16 | specific prior written permission. |
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17 | |
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18 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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19 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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20 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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21 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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22 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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23 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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24 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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25 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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26 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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27 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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28 | POSSIBILITY OF SUCH DAMAGE. |
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29 | |
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30 | */ |
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31 | |
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32 | #include <stddef.h> |
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33 | #include <errno.h> |
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34 | #include <sys/mman.h> |
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35 | #include "ea_internal.h" |
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36 | #include <ea.h> |
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37 | |
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38 | COMPAT_EA_ALIAS (mmap_ea); |
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39 | |
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40 | __ea void *mmap_ea (__ea void *start, size_ea_t length, int prot, int |
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41 | flags, int fd, off_t offset) |
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42 | { |
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43 | #ifdef __EA64__ |
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44 | if (length > 0xffffffffULL) { |
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45 | errno = ENOMEM; |
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46 | return MAP_FAILED_EADDR; |
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47 | } else { |
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48 | return (__ea void *) mmap_eaddr ((unsigned long long) start, |
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49 | (size_t) length, prot, flags, fd, offset); |
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50 | } |
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51 | #else /* __EA32__ */ |
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52 | unsigned long long res; |
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53 | /* |
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54 | * mmap_eaddr returns 64 bits. For ea32, only the lower 32 bits can be |
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55 | * returned. |
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56 | */ |
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57 | res = mmap_eaddr ((unsigned long long) (unsigned int) start, length, |
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58 | prot, flags, fd, offset); |
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59 | if (res != MAP_FAILED_EADDR && res > 0xffffffffULL) { |
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60 | munmap_eaddr (res, length); |
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61 | errno = ENOMEM; |
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62 | res = MAP_FAILED_EADDR; |
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63 | } |
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64 | return (__ea void *) (int) res; |
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65 | #endif |
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66 | } |
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