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annotate druntime/src/compiler/ldc/memory_osx.c @ 1458:e0b2d67cfe7c

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Added druntime (this should be removed once it works).
author Robert Clipsham <robert@octarineparrot.com>
date Tue, 02 Jun 2009 17:43:06 +0100
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1458
e0b2d67cfe7c Added druntime (this should be removed once it works).
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1 /**
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2 * This module provides OSX-specific support routines for memory.d.
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3 *
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4 * Copyright: Copyright Digital Mars 2008 - 2009.
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5 * License: <a href="http://www.boost.org/LICENSE_1_0.txt>Boost License 1.0</a>.
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6 * Authors: Walter Bright, Sean Kelly
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7 *
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8 * Copyright Digital Mars 2008 - 2009.
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9 * Distributed under the Boost Software License, Version 1.0.
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10 * (See accompanying file LICENSE_1_0.txt or copy at
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11 * http://www.boost.org/LICENSE_1_0.txt)
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12 */
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13 #ifdef __APPLE__
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14
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15
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16 #include <mach-o/dyld.h>
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17 #include <mach-o/getsect.h>
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18
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19 void gc_addRange( void* p, size_t sz );
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20 void gc_removeRange( void* p );
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21
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22 typedef struct
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23 {
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24 const char* seg;
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25 const char* sect;
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26 } seg_ref;
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27
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28 const static seg_ref data_segs[] = {{SEG_DATA, SECT_DATA},
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29 {SEG_DATA, SECT_BSS},
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30 {SEG_DATA, SECT_COMMON}};
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31 const static int NUM_DATA_SEGS = sizeof(data_segs) / sizeof(seg_ref);
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32
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33
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34 static void on_add_image( const struct mach_header* h, intptr_t slide )
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35 {
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36 const struct section* sect;
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37 int i;
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38
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39 for( i = 0; i < NUM_DATA_SEGS; ++i )
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40 {
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41 sect = getsectbynamefromheader( h,
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42 data_segs[i].seg,
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43 data_segs[i].sect );
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44 if( sect == NULL || sect->size == 0 )
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45 continue;
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46 gc_addRange( (void*) sect->addr + slide, sect->size );
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47 }
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48 }
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49
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50
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51 static void on_remove_image( const struct mach_header* h, intptr_t slide )
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52 {
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53 const struct section* sect;
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54 int i;
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55
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56 for( i = 0; i < NUM_DATA_SEGS; ++i )
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57 {
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58 sect = getsectbynamefromheader( h,
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59 data_segs[i].seg,
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60 data_segs[i].sect );
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61 if( sect == NULL || sect->size == 0 )
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62 continue;
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63 gc_removeRange( (void*) sect->addr + slide );
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64 }
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65 }
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66
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67
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68 void _d_osx_image_init()
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69 {
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70 _dyld_register_func_for_add_image( &on_add_image );
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71 _dyld_register_func_for_remove_image( &on_remove_image );
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72 }
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73
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74
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75 #endif