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Rev | Author | Line No. | Line |
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1164 | hidnplayr | 1 | ;----------------------------------------------------------------------------- |
2 | proc mem.Alloc size ;///////////////////////////////////////////////////////// |
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3 | ;----------------------------------------------------------------------------- |
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4 | push ebx ecx |
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5 | mov eax,[size] |
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6 | lea ecx,[eax+4+4095] |
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7 | and ecx,not 4095 |
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8 | mcall 68,12 |
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9 | add ecx,-4 |
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10 | mov [eax],ecx |
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11 | add eax,4 |
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12 | pop ecx ebx |
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13 | ret |
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14 | endp |
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15 | |||
16 | ;----------------------------------------------------------------------------- |
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17 | proc mem.ReAlloc mptr,size;/////////////////////////////////////////////////// |
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18 | ;----------------------------------------------------------------------------- |
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19 | push ebx ecx esi edi eax |
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20 | mov eax,[mptr] |
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21 | mov ebx,[size] |
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22 | or eax,eax |
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23 | jz @f |
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24 | lea ecx,[ebx+4+4095] |
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25 | and ecx,not 4095 |
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26 | add ecx,-4 |
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27 | cmp ecx,[eax-4] |
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28 | je .exit |
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29 | @@: mov eax,ebx |
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30 | call mem.Alloc |
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31 | xchg eax,[esp] |
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32 | or eax,eax |
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33 | jz .exit |
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34 | mov esi,eax |
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35 | xchg eax,[esp] |
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36 | mov edi,eax |
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37 | mov ecx,[esi-4] |
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38 | cmp ecx,[edi-4] |
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39 | jbe @f |
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40 | mov ecx,[edi-4] |
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41 | @@: add ecx,3 |
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42 | shr ecx,2 |
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43 | cld |
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44 | rep movsd |
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45 | xchg eax,[esp] |
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46 | call mem.Free |
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47 | .exit: |
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48 | pop eax edi esi ecx ebx |
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49 | ret |
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50 | endp |
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51 | |||
52 | ;----------------------------------------------------------------------------- |
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53 | proc mem.Free mptr ;////////////////////////////////////////////////////////// |
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54 | ;----------------------------------------------------------------------------- |
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55 | mov eax,[mptr] |
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56 | or eax,eax |
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57 | jz @f |
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58 | push ebx ecx |
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59 | lea ecx,[eax-4] |
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60 | mcall 68,13 |
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61 | pop ecx ebx |
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62 | @@: ret |
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63 | endp |
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64 | |||
65 | |||
66 | proc dll.Load, import_table:dword |
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67 | mov esi,[import_table] |
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68 | .next_lib: mov edx,[esi] |
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69 | or edx,edx |
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70 | jz .exit |
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71 | push esi |
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72 | mov esi,[esi+4] |
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73 | mov edi,s_libdir.fname |
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74 | @@: lodsb |
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75 | stosb |
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76 | or al,al |
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77 | jnz @b |
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78 | mcall 68,19,s_libdir |
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79 | or eax,eax |
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80 | jz .fail |
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81 | stdcall dll.Link,eax,edx |
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82 | stdcall dll.Init,[eax+4] |
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83 | pop esi |
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84 | add esi,8 |
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85 | jmp .next_lib |
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86 | .exit: xor eax,eax |
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87 | ret |
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88 | .fail: add esp,4 |
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89 | xor eax,eax |
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90 | inc eax |
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91 | ret |
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92 | endp |
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93 | |||
94 | proc dll.Link, exp:dword,imp:dword |
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95 | push eax |
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96 | mov esi,[imp] |
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97 | test esi,esi |
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98 | jz .done |
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99 | .next: lodsd |
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100 | test eax,eax |
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101 | jz .done |
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102 | stdcall dll.GetProcAddress,[exp],eax |
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103 | or eax,eax |
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104 | jz @f |
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105 | mov [esi-4],eax |
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106 | jmp .next |
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107 | @@: mov dword[esp],0 |
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108 | .done: pop eax |
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109 | ret |
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110 | endp |
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111 | |||
112 | proc dll.Init, dllentry:dword |
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113 | pushad |
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114 | mov eax,mem.Alloc |
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115 | mov ebx,mem.Free |
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116 | mov ecx,mem.ReAlloc |
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117 | mov edx,dll.Load |
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118 | stdcall [dllentry] |
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119 | popad |
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120 | ret |
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121 | endp |
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122 | |||
123 | proc dll.GetProcAddress, exp:dword,sz_name:dword |
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124 | mov edx,[exp] |
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125 | xor eax,eax |
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126 | .next: or edx,edx |
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127 | jz .end |
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128 | cmp dword[edx],0 |
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129 | jz .end |
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130 | stdcall strcmp,[edx],[sz_name] |
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131 | test eax,eax |
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132 | jz .ok |
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133 | add edx,8 |
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134 | jmp .next |
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135 | .ok: mov eax,[edx+4] |
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136 | .end: ret |
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137 | endp |
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138 | |||
139 | proc strcmp, str1:dword,str2:dword |
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140 | push esi edi |
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141 | mov esi,[str1] |
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142 | mov edi,[str2] |
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143 | xor eax,eax |
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144 | @@: lodsb |
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145 | scasb |
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146 | jne .fail |
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147 | or al,al |
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148 | jnz @b |
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149 | jmp .ok |
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150 | .fail: or eax,-1 |
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151 | .ok: pop edi esi |
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152 | ret |
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153 | endp |
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154 | |||
155 | s_libdir: |
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156 | db '/sys/lib/' |
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157 | .fname rb 32 |