[26] | 1 | /*
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| 2 | * TOPPERS/JSP Kernel
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| 3 | * Toyohashi Open Platform for Embedded Real-Time Systems/
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| 4 | * Just Standard Profile Kernel
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| 5 | *
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| 6 | * Copyright (C) 2000-2003 by Embedded and Real-Time Systems Laboratory
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| 7 | * Toyohashi Univ. of Technology, JAPAN
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| 8 | *
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| 9 | * ä¸è¨èä½æ¨©è
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| 10 | ã¯ï¼ä»¥ä¸ã® (1)ã(4) ã®æ¡ä»¶ãï¼Free Software Foundation
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| 11 | * ã«ãã£ã¦å
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| 12 | ¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
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| 13 | * è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
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| 14 | * ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹å¤ã»åé
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| 15 | å¸ï¼ä»¥ä¸ï¼
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| 16 | * å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 17 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 18 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
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| 19 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 20 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 21 | * ç¨ã§ããå½¢ã§åé
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| 22 | å¸ããå ´åã«ã¯ï¼åé
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| 23 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 24 | * è
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| 25 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 26 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 27 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 28 | * ç¨ã§ããªãå½¢ã§åé
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| 29 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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| 30 | * ã¨ï¼
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| 31 | * (a) åé
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| 32 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 33 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 34 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 35 | * (b) åé
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| 36 | å¸ã®å½¢æ
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| 37 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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| 38 | * å ±åãããã¨ï¼
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| 39 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 40 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 41 | ããã³TOPPERSããã¸ã§ã¯ããå
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| 42 | 責ãããã¨ï¼
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| 43 | *
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| 44 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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| 45 | ã
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| 46 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ã
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| 47 | * å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
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| 48 | * æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
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| 49 | *
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| 50 | * @(#) $Id: fc_bfd.cpp,v 1.8 2003/12/15 07:32:13 takayuki Exp $
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| 51 | */
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| 52 |
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| 53 |
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| 54 | #include "base/filecontainer.h"
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| 55 |
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| 56 | #include "base/message.h"
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| 57 |
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| 58 | #include "bfd.h"
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| 59 | #include "libiberty.h"
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| 60 |
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| 61 | #include <string>
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| 62 | #include <map>
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| 63 |
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| 64 | using namespace std;
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| 65 |
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| 66 |
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| 67 | /*
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| 68 | * BFDã使ã£ããã¡ã¤ã«ã³ã³ããã¯ã©ã¹
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| 69 | */
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| 70 | class filecontainer_BFD : public filecontainer
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| 71 | {
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| 72 | protected:
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| 73 | bfd * object; //ãªãã¸ã§ã¯ã
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| 74 | map<string, asymbol *> symbol_table; //æ¤ç´¢ç¨ããã·ã¥ãã©ã
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| 75 | asymbol ** symbol_container;
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| 76 |
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| 77 | public:
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| 78 | filecontainer_BFD(void) throw();
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| 79 | ~filecontainer_BFD(void) throw();
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| 80 |
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| 81 | virtual bool attach_module(const char *);
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| 82 | virtual bool change_endian(void * target, unsigned int size);
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| 83 | virtual bool load_contents(void * dest, unsigned long address, unsigned int size);
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| 84 | virtual unsigned long get_symbol_address(const char *);
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| 85 | virtual const char * get_architecture(void);
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| 86 |
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| 87 | } Instance_of_filecontainer_BFD;
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| 88 |
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| 89 | filecontainer_BFD::filecontainer_BFD(void) throw()
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| 90 | {
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| 91 | bfd_init();
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| 92 |
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| 93 | object = NULL;
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| 94 | symbol_table.clear();
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| 95 | symbol_container = NULL;
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| 96 | instance = this;
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| 97 | }
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| 98 |
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| 99 | filecontainer_BFD::~filecontainer_BFD(void) throw()
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| 100 | {
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| 101 | if(object != NULL)
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| 102 | bfd_close(object);
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| 103 | }
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| 104 |
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| 105 | /*
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| 106 | * attach_module : 対象ã¢ã¸ã¥ã¼ã«ãã¢ã¿ãããã
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| 107 | */
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| 108 | bool filecontainer_BFD::attach_module(const char * filename)
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| 109 | {
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| 110 | char ** target_list;
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| 111 | asymbol ** symbols;
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| 112 | asymbol * sym;
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| 113 | int num_syms;
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| 114 | boolean result;
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| 115 | int i;
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| 116 |
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| 117 | if(object != NULL)
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| 118 | bfd_close(object);
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| 119 | symbol_table.clear();
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| 120 |
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| 121 | //ã¢ã¸ã¥ã¼ã«ãªã¼ãã³ (èªè¾¼ç¨)
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| 122 | object = bfd_openr(filename, "default");
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| 123 |
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| 124 | //ã¿ã¼ã²ãã解決
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| 125 | target_list = (char **)bfd_target_list();
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| 126 | result = bfd_check_format_matches(object, bfd_object, &target_list);
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| 127 | if(result == 0)
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| 128 | ExceptionMessage("Internel error: BFD could not recognize the target file format.","å
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| 129 | é¨ã¨ã©ã¼: BFDã¯ãã¡ã¤ã«ã®èªã¿åºãã«å¤±æãã¾ãã").throwException();
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| 130 |
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| 131 | //ã·ã³ãã«ã®ããã·ã¥ãã©ãä½æ
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| 132 | symbols = (asymbol **)xmalloc( bfd_get_symtab_upper_bound(object) );
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| 133 | num_syms = bfd_canonicalize_symtab(object, symbols);
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| 134 |
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| 135 | for(i=0;i<num_syms;i++)
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| 136 | {
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| 137 | sym = *(symbols+i);
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| 138 | if(sym != NULL && sym->name != NULL && *(sym->name) != '\x0')
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| 139 | symbol_table[string(sym->name)] = sym;
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| 140 | }
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| 141 |
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| 142 | symbol_container = symbols;
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| 143 | return true;
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| 144 | }
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| 145 |
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| 146 | bool filecontainer_BFD::change_endian(void * target, unsigned int size)
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| 147 | {
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| 148 | //ãã¹ãã¯ãªãã«ã¨ä»®å®
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| 149 | enum bfd_endian host_endian = BFD_ENDIAN_LITTLE;
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| 150 |
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| 151 | char * top, * tail;
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| 152 |
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| 153 | if(object == NULL)
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| 154 | return false;
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| 155 |
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| 156 | if(object->xvec->byteorder == BFD_ENDIAN_UNKNOWN)
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| 157 | return false;
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| 158 |
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| 159 | /*
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| 160 | unsigned int __work = 0x1;
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| 161 | if( *(char *)__work == 0)
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| 162 | host_endian = BFD_ENDIAN_BIG;
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| 163 | */
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| 164 |
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| 165 | if(object->xvec->byteorder == host_endian)
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| 166 | return true;
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| 167 |
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| 168 | /*
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| 169 | * ã¡ã¤ã³ã«ã¼ã : bswapããªãã§ãç´ ç´ã«æ¸ã
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| 170 | */
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| 171 |
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| 172 | top = (char *)target;
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| 173 | tail = (char *)target+size -1;
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| 174 |
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| 175 | while(top < tail)
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| 176 | {
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| 177 | *top ^= *tail, *tail ^= *top, *top ^= *tail;
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| 178 | top ++;
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| 179 | tail --;
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| 180 | }
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| 181 |
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| 182 | return true;
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| 183 | }
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| 184 |
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| 185 |
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| 186 | bool filecontainer_BFD::load_contents(void * dest, unsigned long address, unsigned int size)
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| 187 | {
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| 188 | struct sec * section;
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| 189 |
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| 190 | if(object == 0)
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| 191 | return false;
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| 192 |
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| 193 | //対象ã¢ãã¬ã¹ãä¿æããã»ã¯ã·ã§ã³ãæ¢ã
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| 194 | section = object->sections;
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| 195 | while(section != 0)
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| 196 | {
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| 197 | if(address - (unsigned long)section->vma <= section->_raw_size
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| 198 | && (section->flags & (SEC_ALLOC|SEC_HAS_CONTENTS)) == (SEC_ALLOC|SEC_HAS_CONTENTS))
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| 199 | {
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| 200 | //èªã¿åºã
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| 201 | bfd_get_section_contents(object, section, dest, address - (unsigned long)section->vma, size);
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| 202 | return true;
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| 203 | }
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| 204 | section = section->next;
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| 205 | }
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| 206 |
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| 207 | //ã©ãã«ããªã
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| 208 | ExceptionMessage("Internel error: Memory read with unmapped address","å
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| 209 | é¨ã¨ã©ã¼; ãããããã¦ãªãã¢ãã¬ã¹ã使ã£ã¦ã¡ã¢ãªãªã¼ããè¡ããã¾ãã").throwException();
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| 210 |
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| 211 | return false;
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| 212 | }
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| 213 |
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| 214 |
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| 215 | /*
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| 216 | * get_symbol_address : ã·ã³ãã«åããã¢ãã¬ã¹å¤ãåå¾ãã
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| 217 | */
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| 218 | unsigned long filecontainer_BFD::get_symbol_address(const char * symbol)
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| 219 | {
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| 220 | map<string, asymbol *>::iterator scope;
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| 221 | string symbol_name;
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| 222 |
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| 223 | if(object == 0)
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| 224 | ExceptionMessage("Not initialized","åæåããã¦ã¾ãã").throwException();
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| 225 |
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| 226 | //ã·ã³ãã«åãçæãã ("_"ã¨ãã®å¦ç)
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| 227 | if(object->xvec->symbol_leading_char != '\x0')
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| 228 | symbol_name += object->xvec->symbol_leading_char;
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| 229 | symbol_name += symbol;
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| 230 |
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| 231 | scope = symbol_table.find(symbol_name);
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| 232 | if(scope == symbol_table.end())
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| 233 | return 0;
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| 234 | //Exception("Internal error: Unknown symbol [%s]","å
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| 235 | é¨ã¨ã©ã¼: ä¸æãªã·ã³ãã« [%s]").format(symbol_name.c_str());
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| 236 |
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| 237 | //Address = ã»ã¯ã·ã§ã³å
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| 238 | ãªãã»ããå¤ + ã»ã¯ã·ã§ã³ã®VMA
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| 239 | return (*scope).second->value + (*scope).second->section->vma;
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| 240 | }
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| 241 |
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| 242 | /*
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| 243 | * get_architecture : ã¢ã¼ããã¯ãã£åã®åå¾
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| 244 | */
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| 245 | const char * filecontainer_BFD::get_architecture(void)
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| 246 | {
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| 247 | if(object == NULL)
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| 248 | return "Unknown";
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| 249 |
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| 250 | //ã¨ããããã¿ã¼ã²ããåãæã£ã¦ã¢ã¼ããã¯ãã£åã«ãã¦ããã
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| 251 | // #ã©ããããã¼ã«ãã使ã£ã¦ãªããã ä»ã®ã¨ãã
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| 252 | return object->xvec->name;
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| 253 | }
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| 254 |
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