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Rev | Author | Line No. | Line |
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2288 | clevermous | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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2455 | mario79 | 3 | ;; Copyright (C) KolibriOS team 2004-2012. All rights reserved. ;; |
2288 | clevermous | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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7 | |||
8 | $Revision: 3786 $ |
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9 | |||
10 | |||
11 | align 4 |
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12 | proc alloc_page |
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13 | |||
14 | pushfd |
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15 | cli |
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16 | push ebx |
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17 | ;//- |
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18 | cmp [pg_data.pages_free], 1 |
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19 | jle .out_of_memory |
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20 | ;//- |
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21 | |||
22 | mov ebx, [page_start] |
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23 | mov ecx, [page_end] |
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24 | .l1: |
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25 | bsf eax, [ebx]; |
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26 | jnz .found |
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27 | add ebx, 4 |
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28 | cmp ebx, ecx |
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29 | jb .l1 |
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30 | pop ebx |
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31 | popfd |
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32 | xor eax, eax |
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33 | ret |
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34 | .found: |
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35 | ;//- |
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36 | dec [pg_data.pages_free] |
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37 | jz .out_of_memory |
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38 | ;//- |
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39 | btr [ebx], eax |
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40 | mov [page_start], ebx |
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41 | sub ebx, sys_pgmap |
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42 | lea eax, [eax+ebx*8] |
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43 | shl eax, 12 |
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44 | ;//- dec [pg_data.pages_free] |
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45 | pop ebx |
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46 | popfd |
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47 | ret |
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48 | ;//- |
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49 | .out_of_memory: |
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50 | mov [pg_data.pages_free], 1 |
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51 | xor eax, eax |
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52 | pop ebx |
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53 | popfd |
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54 | ret |
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55 | ;//- |
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56 | endp |
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57 | |||
58 | align 4 |
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59 | proc alloc_pages stdcall, count:dword |
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60 | pushfd |
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61 | push ebx |
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62 | push edi |
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63 | cli |
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64 | mov eax, [count] |
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65 | add eax, 7 |
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66 | shr eax, 3 |
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67 | mov [count], eax |
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68 | ;//- |
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69 | mov ebx, [pg_data.pages_free] |
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70 | sub ebx, 9 |
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71 | js .out_of_memory |
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72 | shr ebx, 3 |
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73 | cmp eax, ebx |
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74 | jg .out_of_memory |
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75 | ;//- |
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76 | mov ecx, [page_start] |
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77 | mov ebx, [page_end] |
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78 | .find: |
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79 | mov edx, [count] |
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80 | mov edi, ecx |
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81 | .match: |
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82 | cmp byte [ecx], 0xFF |
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83 | jne .next |
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84 | dec edx |
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85 | jz .ok |
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86 | inc ecx |
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87 | cmp ecx, ebx |
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88 | jb .match |
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89 | .out_of_memory: |
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90 | .fail: |
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91 | xor eax, eax |
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92 | pop edi |
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93 | pop ebx |
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94 | popfd |
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95 | ret |
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96 | .next: |
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97 | inc ecx |
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98 | cmp ecx, ebx |
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99 | jb .find |
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100 | pop edi |
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101 | pop ebx |
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102 | popfd |
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103 | xor eax, eax |
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104 | ret |
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105 | .ok: |
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106 | sub ecx, edi |
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107 | inc ecx |
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108 | push esi |
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109 | mov esi, edi |
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110 | xor eax, eax |
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111 | rep stosb |
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112 | sub esi, sys_pgmap |
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113 | shl esi, 3+12 |
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114 | mov eax, esi |
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115 | mov ebx, [count] |
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116 | shl ebx, 3 |
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117 | sub [pg_data.pages_free], ebx |
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118 | pop esi |
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119 | pop edi |
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120 | pop ebx |
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121 | popfd |
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122 | ret |
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123 | endp |
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124 | |||
125 | align 4 |
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126 | proc map_page stdcall,lin_addr:dword,phis_addr:dword,flags:dword |
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127 | push ebx |
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128 | mov eax, [phis_addr] |
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129 | and eax, not 0xFFF |
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130 | or eax, [flags] |
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131 | mov ebx, [lin_addr] |
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132 | shr ebx, 12 |
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133 | mov [page_tabs+ebx*4], eax |
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134 | mov eax, [lin_addr] |
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135 | invlpg [eax] |
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136 | pop ebx |
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137 | ret |
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138 | endp |
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139 | |||
140 | align 4 |
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141 | map_space: ;not implemented |
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142 | |||
143 | |||
144 | ret |
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145 | |||
146 | |||
147 | align 4 |
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148 | proc free_page |
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149 | ;arg: eax page address |
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150 | pushfd |
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151 | cli |
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152 | shr eax, 12 ;page index |
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153 | bts dword [sys_pgmap], eax ;that's all! |
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154 | cmc |
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155 | adc [pg_data.pages_free], 0 |
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156 | shr eax, 3 |
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157 | and eax, not 3 ;dword offset from page_map |
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158 | add eax, sys_pgmap |
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159 | cmp [page_start], eax |
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160 | ja @f |
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161 | popfd |
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162 | ret |
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163 | @@: |
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164 | mov [page_start], eax |
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165 | popfd |
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166 | ret |
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167 | endp |
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168 | |||
2414 | Serge | 169 | align 4 |
2288 | clevermous | 170 | proc map_io_mem stdcall, base:dword, size:dword, flags:dword |
171 | |||
172 | push ebx |
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173 | push edi |
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174 | mov eax, [size] |
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175 | add eax, [base] |
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176 | add eax, 4095 |
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177 | and eax, -4096 |
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178 | mov ecx, [base] |
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179 | and ecx, -4096 |
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180 | sub eax, ecx |
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181 | mov [size], eax |
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182 | |||
183 | stdcall alloc_kernel_space, eax |
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184 | test eax, eax |
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185 | jz .fail |
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186 | push eax |
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187 | |||
188 | mov edi, 0x1000 |
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189 | mov ebx, eax |
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190 | mov ecx, [size] |
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191 | mov edx, [base] |
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192 | shr eax, 12 |
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193 | shr ecx, 12 |
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194 | and edx, -4096 |
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195 | or edx, [flags] |
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196 | @@: |
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197 | mov [page_tabs+eax*4], edx |
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198 | invlpg [ebx] |
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199 | inc eax |
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200 | add ebx, edi |
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201 | add edx, edi |
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202 | loop @B |
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203 | |||
204 | pop eax |
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205 | mov edx, [base] |
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206 | and edx, 4095 |
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207 | add eax, edx |
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208 | .fail: |
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209 | pop edi |
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210 | pop ebx |
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211 | ret |
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212 | endp |
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213 | |||
214 | ; param |
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215 | ; eax= page base + page flags |
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216 | ; ebx= linear address |
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217 | ; ecx= count |
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218 | |||
219 | align 4 |
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220 | commit_pages: |
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221 | test ecx, ecx |
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222 | jz .fail |
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223 | |||
224 | push edi |
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225 | push eax |
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226 | push ecx |
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227 | mov ecx, pg_data.mutex |
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228 | call mutex_lock |
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229 | pop ecx |
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230 | pop eax |
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231 | |||
232 | mov edi, ebx |
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233 | shr edi, 12 |
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234 | lea edi, [page_tabs+edi*4] |
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235 | @@: |
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236 | stosd |
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237 | invlpg [ebx] |
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238 | add eax, 0x1000 |
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239 | add ebx, 0x1000 |
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240 | loop @B |
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241 | |||
242 | pop edi |
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243 | |||
244 | mov ecx, pg_data.mutex |
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245 | call mutex_unlock |
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246 | .fail: |
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247 | ret |
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248 | |||
249 | |||
250 | ; param |
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251 | ; eax= base |
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252 | ; ecx= count |
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253 | |||
254 | align 4 |
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255 | release_pages: |
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256 | |||
257 | push ebp |
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258 | push esi |
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259 | push edi |
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260 | push ebx |
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261 | |||
262 | mov esi, eax |
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263 | mov edi, eax |
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264 | |||
265 | shr esi, 12 |
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266 | lea esi, [page_tabs+esi*4] |
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267 | |||
268 | push ecx |
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269 | mov ecx, pg_data.mutex |
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270 | call mutex_lock |
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271 | pop ecx |
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272 | |||
273 | mov ebp, [pg_data.pages_free] |
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274 | mov ebx, [page_start] |
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275 | mov edx, sys_pgmap |
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276 | @@: |
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277 | xor eax, eax |
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278 | xchg eax, [esi] |
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279 | invlpg [edi] |
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280 | |||
281 | test eax, 1 |
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282 | jz .next |
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283 | |||
284 | shr eax, 12 |
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285 | bts [edx], eax |
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286 | cmc |
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287 | adc ebp, 0 |
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288 | shr eax, 3 |
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289 | and eax, -4 |
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290 | add eax, edx |
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291 | cmp eax, ebx |
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292 | jae .next |
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293 | |||
294 | mov ebx, eax |
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295 | .next: |
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296 | add edi, 0x1000 |
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297 | add esi, 4 |
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298 | loop @B |
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299 | |||
300 | mov [pg_data.pages_free], ebp |
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301 | mov ecx, pg_data.mutex |
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302 | call mutex_unlock |
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303 | |||
304 | pop ebx |
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305 | pop edi |
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306 | pop esi |
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307 | pop ebp |
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308 | ret |
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309 | |||
310 | ; param |
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311 | ; eax= base |
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312 | ; ecx= count |
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313 | |||
314 | align 4 |
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315 | unmap_pages: |
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316 | |||
317 | push edi |
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318 | |||
319 | mov edi, eax |
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320 | mov edx, eax |
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321 | |||
322 | shr edi, 10 |
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323 | add edi, page_tabs |
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324 | |||
325 | xor eax, eax |
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326 | @@: |
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327 | stosd |
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328 | invlpg [edx] |
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329 | add edx, 0x1000 |
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330 | loop @b |
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331 | |||
332 | pop edi |
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333 | ret |
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334 | |||
335 | |||
336 | align 4 |
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337 | proc map_page_table stdcall, lin_addr:dword, phis_addr:dword |
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338 | push ebx |
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339 | mov ebx, [lin_addr] |
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340 | shr ebx, 22 |
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341 | mov eax, [phis_addr] |
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342 | and eax, not 0xFFF |
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343 | or eax, PG_UW ;+PG_NOCACHE |
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344 | mov dword [master_tab+ebx*4], eax |
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345 | mov eax, [lin_addr] |
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346 | shr eax, 10 |
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347 | add eax, page_tabs |
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348 | invlpg [eax] |
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349 | pop ebx |
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350 | ret |
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351 | endp |
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352 | |||
353 | align 4 |
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354 | proc init_LFB |
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355 | locals |
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356 | pg_count dd ? |
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357 | endl |
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358 | |||
359 | cmp dword [LFBAddress], -1 |
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360 | jne @f |
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3732 | Serge | 361 | mov [BOOT_VARS+BOOT_MTRR], byte 2 |
2398 | mario79 | 362 | ; max VGA=640*480*4=1228800 bytes |
363 | ; + 32*640*4=81920 bytes for mouse pointer |
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364 | stdcall alloc_pages, ((1228800+81920)/4096) |
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2288 | clevermous | 365 | |
366 | push eax |
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367 | call alloc_page |
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368 | stdcall map_page_table, LFB_BASE, eax |
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369 | pop eax |
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370 | or eax, PG_UW |
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371 | mov ebx, LFB_BASE |
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2398 | mario79 | 372 | ; max VGA=640*480*4=1228800 bytes |
373 | ; + 32*640*4=81920 bytes for mouse pointer |
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374 | mov ecx, (1228800+81920)/4096 |
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2288 | clevermous | 375 | call commit_pages |
376 | mov [LFBAddress], dword LFB_BASE |
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377 | ret |
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378 | @@: |
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379 | test [SCR_MODE], word 0100000000000000b |
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380 | jnz @f |
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3732 | Serge | 381 | mov [BOOT_VARS+BOOT_MTRR], byte 2 |
2288 | clevermous | 382 | ret |
383 | @@: |
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384 | call init_mtrr |
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385 | |||
386 | mov edx, LFB_BASE |
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387 | mov esi, [LFBAddress] |
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388 | mov edi, 0x00C00000 |
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389 | mov dword [exp_lfb+4], edx |
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390 | |||
391 | shr edi, 12 |
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392 | mov [pg_count], edi |
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393 | shr edi, 10 |
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394 | |||
395 | bt [cpu_caps], CAPS_PSE |
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396 | jnc .map_page_tables |
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397 | or esi, PG_LARGE+PG_UW |
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398 | mov edx, sys_pgdir+(LFB_BASE shr 20) |
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399 | @@: |
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400 | mov [edx], esi |
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401 | add edx, 4 |
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402 | add esi, 0x00400000 |
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403 | dec edi |
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404 | jnz @B |
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405 | |||
406 | bt [cpu_caps], CAPS_PGE |
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407 | jnc @F |
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408 | or dword [sys_pgdir+(LFB_BASE shr 20)], PG_GLOBAL |
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409 | @@: |
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410 | mov dword [LFBAddress], LFB_BASE |
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411 | mov eax, cr3 ;flush TLB |
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412 | mov cr3, eax |
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413 | ret |
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414 | |||
415 | .map_page_tables: |
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416 | |||
417 | @@: |
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418 | call alloc_page |
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419 | stdcall map_page_table, edx, eax |
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420 | add edx, 0x00400000 |
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421 | dec edi |
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422 | jnz @B |
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423 | |||
424 | mov eax, [LFBAddress] |
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425 | mov edi, page_tabs + (LFB_BASE shr 10) |
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426 | or eax, PG_UW |
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427 | mov ecx, [pg_count] |
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428 | cld |
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429 | @@: |
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430 | stosd |
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431 | add eax, 0x1000 |
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432 | dec ecx |
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433 | jnz @B |
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434 | |||
435 | mov dword [LFBAddress], LFB_BASE |
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436 | mov eax, cr3 ;flush TLB |
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437 | mov cr3, eax |
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438 | |||
439 | ret |
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440 | endp |
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441 | |||
442 | align 4 |
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443 | proc new_mem_resize stdcall, new_size:dword |
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444 | |||
2594 | Serge | 445 | push ebx |
446 | push esi |
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447 | push edi |
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2288 | clevermous | 448 | |
2594 | Serge | 449 | mov edx, [current_slot] |
450 | cmp [edx+APPDATA.heap_base], 0 |
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451 | jne .exit |
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452 | |||
2288 | clevermous | 453 | mov edi, [new_size] |
454 | add edi, 4095 |
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455 | and edi, not 4095 |
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456 | mov [new_size], edi |
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457 | |||
458 | mov esi, [edx+APPDATA.mem_size] |
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459 | add esi, 4095 |
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460 | and esi, not 4095 |
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461 | |||
462 | cmp edi, esi |
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2594 | Serge | 463 | ja .expand |
464 | je .exit |
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2288 | clevermous | 465 | |
2594 | Serge | 466 | mov ebx, edi |
2288 | clevermous | 467 | shr edi, 12 |
468 | shr esi, 12 |
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2594 | Serge | 469 | |
470 | mov ecx, pg_data.mutex |
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471 | call mutex_lock |
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2288 | clevermous | 472 | @@: |
473 | mov eax, [app_page_tabs+edi*4] |
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474 | test eax, 1 |
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475 | jz .next |
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2594 | Serge | 476 | |
477 | mov dword [app_page_tabs+edi*4], 0 |
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2288 | clevermous | 478 | invlpg [ebx] |
479 | call free_page |
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480 | |||
481 | .next: |
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2594 | Serge | 482 | inc edi |
2595 | Serge | 483 | add ebx, 0x1000 |
2288 | clevermous | 484 | cmp edi, esi |
485 | jb @B |
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486 | |||
2594 | Serge | 487 | mov ecx, pg_data.mutex |
488 | call mutex_unlock |
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489 | |||
2288 | clevermous | 490 | .update_size: |
2594 | Serge | 491 | mov edx, [current_slot] |
2288 | clevermous | 492 | mov ebx, [new_size] |
493 | call update_mem_size |
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2594 | Serge | 494 | .exit: |
495 | pop edi |
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496 | pop esi |
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497 | pop ebx |
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2288 | clevermous | 498 | xor eax, eax |
499 | ret |
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2594 | Serge | 500 | |
2288 | clevermous | 501 | .expand: |
502 | |||
2594 | Serge | 503 | mov ecx, pg_data.mutex |
504 | call mutex_lock |
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2288 | clevermous | 505 | |
2594 | Serge | 506 | xchg esi, edi |
507 | |||
508 | push esi ;new size |
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509 | push edi ;old size |
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510 | |||
2288 | clevermous | 511 | add edi, 0x3FFFFF |
512 | and edi, not(0x3FFFFF) |
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513 | add esi, 0x3FFFFF |
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514 | and esi, not(0x3FFFFF) |
||
515 | |||
2594 | Serge | 516 | cmp edi, esi |
2288 | clevermous | 517 | jae .grow |
2594 | Serge | 518 | @@: |
2288 | clevermous | 519 | call alloc_page |
520 | test eax, eax |
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2594 | Serge | 521 | jz .exit_fail |
2288 | clevermous | 522 | |
523 | stdcall map_page_table, edi, eax |
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524 | |||
525 | push edi |
||
526 | shr edi, 10 |
||
527 | add edi, page_tabs |
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528 | mov ecx, 1024 |
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529 | xor eax, eax |
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530 | cld |
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531 | rep stosd |
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532 | pop edi |
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533 | |||
534 | add edi, 0x00400000 |
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535 | cmp edi, esi |
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536 | jb @B |
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537 | .grow: |
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2594 | Serge | 538 | pop edi ;old size |
539 | pop ecx ;new size |
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2288 | clevermous | 540 | |
2594 | Serge | 541 | shr edi, 10 |
542 | shr ecx, 10 |
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543 | sub ecx, edi |
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544 | shr ecx, 2 ;pages count |
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545 | mov eax, 2 |
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546 | |||
547 | add edi, app_page_tabs |
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2288 | clevermous | 548 | rep stosd |
549 | |||
2594 | Serge | 550 | mov ecx, pg_data.mutex |
551 | call mutex_unlock |
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2288 | clevermous | 552 | |
553 | jmp .update_size |
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2594 | Serge | 554 | |
555 | .exit_fail: |
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2288 | clevermous | 556 | mov ecx, pg_data.mutex |
557 | call mutex_unlock |
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558 | |||
2594 | Serge | 559 | add esp, 8 |
560 | pop edi |
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561 | pop esi |
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562 | pop ebx |
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2288 | clevermous | 563 | xor eax, eax |
564 | inc eax |
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565 | ret |
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566 | endp |
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567 | |||
2594 | Serge | 568 | |
569 | align 4 |
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2288 | clevermous | 570 | update_mem_size: |
571 | ; in: edx = slot base |
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572 | ; ebx = new memory size |
||
573 | ; destroys eax,ecx,edx |
||
574 | |||
575 | mov [APPDATA.mem_size+edx], ebx |
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576 | ;search threads and update |
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577 | ;application memory size infomation |
||
578 | mov ecx, [APPDATA.dir_table+edx] |
||
579 | mov eax, 2 |
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580 | |||
581 | .search_threads: |
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582 | ;eax = current slot |
||
583 | ;ebx = new memory size |
||
584 | ;ecx = page directory |
||
585 | cmp eax, [TASK_COUNT] |
||
586 | jg .search_threads_end |
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587 | mov edx, eax |
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588 | shl edx, 5 |
||
589 | cmp word [CURRENT_TASK+edx+TASKDATA.state], 9 ;if slot empty? |
||
590 | jz .search_threads_next |
||
591 | shl edx, 3 |
||
592 | cmp [SLOT_BASE+edx+APPDATA.dir_table], ecx ;if it is our thread? |
||
593 | jnz .search_threads_next |
||
594 | mov [SLOT_BASE+edx+APPDATA.mem_size], ebx ;update memory size |
||
595 | .search_threads_next: |
||
596 | inc eax |
||
597 | jmp .search_threads |
||
598 | .search_threads_end: |
||
599 | ret |
||
600 | |||
601 | ; param |
||
602 | ; eax= linear address |
||
603 | ; |
||
604 | ; retval |
||
605 | ; eax= phisical page address |
||
606 | |||
607 | align 4 |
||
608 | get_pg_addr: |
||
3166 | clevermous | 609 | sub eax, OS_BASE |
610 | cmp eax, 0x400000 |
||
611 | jb @f |
||
2288 | clevermous | 612 | shr eax, 12 |
3166 | clevermous | 613 | mov eax, [page_tabs+(eax+(OS_BASE shr 12))*4] |
614 | @@: |
||
2288 | clevermous | 615 | and eax, 0xFFFFF000 |
616 | ret |
||
617 | |||
618 | |||
619 | align 4 |
||
620 | ; Now it is called from core/sys32::exc_c (see stack frame there) |
||
621 | proc page_fault_handler |
||
622 | |||
623 | .err_addr equ ebp-4 |
||
624 | |||
625 | push ebx ;save exception number (#PF) |
||
626 | mov ebp, esp |
||
627 | mov ebx, cr2 |
||
628 | push ebx ;that is locals: .err_addr = cr2 |
||
629 | inc [pg_data.pages_faults] |
||
630 | |||
631 | mov eax, [pf_err_code] |
||
632 | |||
633 | cmp ebx, OS_BASE ;ebx == .err_addr |
||
3539 | clevermous | 634 | jb .user_space ;страница в памяти приложения ; |
2288 | clevermous | 635 | |
636 | cmp ebx, page_tabs |
||
3539 | clevermous | 637 | jb .kernel_space ;страница в памяти ядра |
2288 | clevermous | 638 | |
639 | cmp ebx, kernel_tabs |
||
3539 | clevermous | 640 | jb .alloc;.app_tabs ;таблицы страниц приложения ; |
641 | ;просто создадим одну |
||
642 | if 0 ;пока это просто лишнее |
||
2288 | clevermous | 643 | cmp ebx, LFB_BASE |
3539 | clevermous | 644 | jb .core_tabs ;таблицы страниц ядра |
645 | ;Ошибка |
||
2288 | clevermous | 646 | .lfb: |
3539 | clevermous | 647 | ;область LFB |
648 | ;Ошибка |
||
2288 | clevermous | 649 | jmp .fail |
650 | end if |
||
651 | .core_tabs: |
||
652 | .fail: ;simply return to caller |
||
653 | mov esp, ebp |
||
654 | pop ebx ;restore exception number (#PF) |
||
655 | ret |
||
656 | |||
657 | ; xchg bx, bx |
||
658 | ; add esp,12 ;clear in stack: locals(.err_addr) + #PF + ret_to_caller |
||
659 | ; restore_ring3_context |
||
660 | ; iretd |
||
661 | |||
662 | .user_space: |
||
663 | test eax, PG_MAP |
||
3539 | clevermous | 664 | jnz .err_access ;Страница присутствует |
665 | ;Ошибка доступа ? |
||
2288 | clevermous | 666 | |
667 | shr ebx, 12 |
||
668 | mov ecx, ebx |
||
669 | shr ecx, 10 |
||
670 | mov edx, [master_tab+ecx*4] |
||
671 | test edx, PG_MAP |
||
3539 | clevermous | 672 | jz .fail ;таблица страниц не создана |
673 | ;неверный адрес в программе |
||
2288 | clevermous | 674 | |
675 | mov eax, [page_tabs+ebx*4] |
||
676 | test eax, 2 |
||
3539 | clevermous | 677 | jz .fail ;адрес не зарезервирован для ; |
678 | ;использования. Ошибка |
||
2288 | clevermous | 679 | .alloc: |
680 | call alloc_page |
||
681 | test eax, eax |
||
682 | jz .fail |
||
683 | |||
684 | stdcall map_page, [.err_addr], eax, PG_UW |
||
685 | |||
686 | mov edi, [.err_addr] |
||
687 | and edi, 0xFFFFF000 |
||
688 | mov ecx, 1024 |
||
689 | xor eax, eax |
||
690 | ;cld ;caller is duty for this |
||
691 | rep stosd |
||
692 | .exit: ;iret with repeat fault instruction |
||
693 | add esp, 12;clear in stack: locals(.err_addr) + #PF + ret_to_caller |
||
694 | restore_ring3_context |
||
695 | iretd |
||
696 | |||
697 | .err_access: |
||
698 | ; access denied? this may be a result of copy-on-write protection for DLL |
||
699 | ; check list of HDLLs |
||
700 | and ebx, not 0xFFF |
||
701 | mov eax, [CURRENT_TASK] |
||
702 | shl eax, 8 |
||
703 | mov eax, [SLOT_BASE+eax+APPDATA.dlls_list_ptr] |
||
704 | test eax, eax |
||
705 | jz .fail |
||
706 | mov esi, [eax+HDLL.fd] |
||
707 | .scan_hdll: |
||
708 | cmp esi, eax |
||
709 | jz .fail |
||
710 | mov edx, ebx |
||
711 | sub edx, [esi+HDLL.base] |
||
712 | cmp edx, [esi+HDLL.size] |
||
713 | jb .fault_in_hdll |
||
714 | .scan_hdll.next: |
||
715 | mov esi, [esi+HDLL.fd] |
||
716 | jmp .scan_hdll |
||
717 | .fault_in_hdll: |
||
718 | ; allocate new page, map it as rw and copy data |
||
719 | call alloc_page |
||
720 | test eax, eax |
||
721 | jz .fail |
||
722 | stdcall map_page, ebx, eax, PG_UW |
||
723 | mov edi, ebx |
||
724 | mov ecx, 1024 |
||
725 | sub ebx, [esi+HDLL.base] |
||
726 | mov esi, [esi+HDLL.parent] |
||
727 | mov esi, [esi+DLLDESCR.data] |
||
728 | add esi, ebx |
||
729 | rep movsd |
||
730 | jmp .exit |
||
731 | |||
732 | .kernel_space: |
||
733 | test eax, PG_MAP |
||
3539 | clevermous | 734 | jz .fail ;страница не присутствует |
2288 | clevermous | 735 | |
736 | test eax, 12 ;U/S (+below) |
||
3539 | clevermous | 737 | jnz .fail ;приложение обратилось к памяти |
738 | ;ядра |
||
2288 | clevermous | 739 | ;test eax, 8 |
3539 | clevermous | 740 | ;jnz .fail ;установлен зарезервированный бит |
741 | ;в таблицах страниц. добавлено в P4/Xeon |
||
2288 | clevermous | 742 | |
3539 | clevermous | 743 | ;попытка записи в защищённую страницу ядра |
2288 | clevermous | 744 | |
745 | cmp ebx, tss._io_map_0 |
||
746 | jb .fail |
||
747 | |||
748 | cmp ebx, tss._io_map_0+8192 |
||
749 | jae .fail |
||
750 | |||
751 | ; io permission map |
||
752 | ; copy-on-write protection |
||
753 | |||
754 | call alloc_page |
||
755 | test eax, eax |
||
756 | jz .fail |
||
757 | |||
758 | push eax |
||
759 | stdcall map_page, [.err_addr], eax, dword PG_SW |
||
760 | pop eax |
||
761 | mov edi, [.err_addr] |
||
762 | and edi, -4096 |
||
763 | lea esi, [edi+(not tss._io_map_0)+1]; -tss._io_map_0 |
||
764 | |||
765 | mov ebx, esi |
||
766 | shr ebx, 12 |
||
767 | mov edx, [current_slot] |
||
768 | or eax, PG_SW |
||
769 | mov [edx+APPDATA.io_map+ebx*4], eax |
||
770 | |||
771 | add esi, [default_io_map] |
||
772 | mov ecx, 4096/4 |
||
773 | ;cld ;caller is duty for this |
||
774 | rep movsd |
||
775 | jmp .exit |
||
776 | endp |
||
777 | |||
778 | ; returns number of mapped bytes |
||
779 | proc map_mem stdcall, lin_addr:dword,slot:dword,\ |
||
780 | ofs:dword,buf_size:dword,req_access:dword |
||
781 | push 0 ; initialize number of mapped bytes |
||
782 | |||
783 | cmp [buf_size], 0 |
||
784 | jz .exit |
||
785 | |||
786 | mov eax, [slot] |
||
787 | shl eax, 8 |
||
788 | mov eax, [SLOT_BASE+eax+APPDATA.dir_table] |
||
789 | and eax, 0xFFFFF000 |
||
790 | |||
791 | stdcall map_page, [ipc_pdir], eax, PG_UW |
||
792 | mov ebx, [ofs] |
||
793 | shr ebx, 22 |
||
794 | mov esi, [ipc_pdir] |
||
795 | mov edi, [ipc_ptab] |
||
796 | mov eax, [esi+ebx*4] |
||
797 | and eax, 0xFFFFF000 |
||
798 | jz .exit |
||
799 | stdcall map_page, edi, eax, PG_UW |
||
800 | ; inc ebx |
||
801 | ; add edi, 0x1000 |
||
802 | ; mov eax, [esi+ebx*4] |
||
803 | ; test eax, eax |
||
804 | ; jz @f |
||
805 | ; and eax, 0xFFFFF000 |
||
806 | ; stdcall map_page, edi, eax |
||
807 | |||
808 | @@: |
||
809 | mov edi, [lin_addr] |
||
810 | and edi, 0xFFFFF000 |
||
811 | mov ecx, [buf_size] |
||
812 | add ecx, 4095 |
||
813 | shr ecx, 12 |
||
814 | inc ecx |
||
815 | |||
816 | mov edx, [ofs] |
||
817 | shr edx, 12 |
||
818 | and edx, 0x3FF |
||
819 | mov esi, [ipc_ptab] |
||
820 | |||
821 | .map: |
||
822 | stdcall safe_map_page, [slot], [req_access], [ofs] |
||
823 | jnc .exit |
||
824 | add dword [ebp-4], 4096 |
||
825 | add [ofs], 4096 |
||
826 | dec ecx |
||
827 | jz .exit |
||
828 | add edi, 0x1000 |
||
829 | inc edx |
||
830 | cmp edx, 0x400 |
||
831 | jnz .map |
||
832 | inc ebx |
||
833 | mov eax, [ipc_pdir] |
||
834 | mov eax, [eax+ebx*4] |
||
835 | and eax, 0xFFFFF000 |
||
836 | jz .exit |
||
837 | stdcall map_page, esi, eax, PG_UW |
||
838 | xor edx, edx |
||
839 | jmp .map |
||
840 | |||
841 | .exit: |
||
842 | pop eax |
||
843 | ret |
||
844 | endp |
||
845 | |||
846 | proc map_memEx stdcall, lin_addr:dword,slot:dword,\ |
||
847 | ofs:dword,buf_size:dword,req_access:dword |
||
848 | push 0 ; initialize number of mapped bytes |
||
849 | |||
850 | cmp [buf_size], 0 |
||
851 | jz .exit |
||
852 | |||
853 | mov eax, [slot] |
||
854 | shl eax, 8 |
||
855 | mov eax, [SLOT_BASE+eax+APPDATA.dir_table] |
||
856 | and eax, 0xFFFFF000 |
||
857 | |||
858 | stdcall map_page, [proc_mem_pdir], eax, PG_UW |
||
859 | mov ebx, [ofs] |
||
860 | shr ebx, 22 |
||
861 | mov esi, [proc_mem_pdir] |
||
862 | mov edi, [proc_mem_tab] |
||
863 | mov eax, [esi+ebx*4] |
||
864 | and eax, 0xFFFFF000 |
||
865 | test eax, eax |
||
866 | jz .exit |
||
867 | stdcall map_page, edi, eax, PG_UW |
||
868 | |||
869 | @@: |
||
870 | mov edi, [lin_addr] |
||
871 | and edi, 0xFFFFF000 |
||
872 | mov ecx, [buf_size] |
||
873 | add ecx, 4095 |
||
874 | shr ecx, 12 |
||
875 | inc ecx |
||
876 | |||
877 | mov edx, [ofs] |
||
878 | shr edx, 12 |
||
879 | and edx, 0x3FF |
||
880 | mov esi, [proc_mem_tab] |
||
881 | |||
882 | .map: |
||
883 | stdcall safe_map_page, [slot], [req_access], [ofs] |
||
884 | jnc .exit |
||
885 | add dword [ebp-4], 0x1000 |
||
886 | add edi, 0x1000 |
||
887 | add [ofs], 0x1000 |
||
888 | inc edx |
||
889 | dec ecx |
||
890 | jnz .map |
||
891 | .exit: |
||
892 | pop eax |
||
893 | ret |
||
894 | endp |
||
895 | |||
896 | ; in: esi+edx*4 = pointer to page table entry |
||
897 | ; in: [slot], [req_access], [ofs] on the stack |
||
898 | ; in: edi = linear address to map |
||
899 | ; out: CF cleared <=> failed |
||
900 | ; destroys: only eax |
||
901 | proc safe_map_page stdcall, slot:dword, req_access:dword, ofs:dword |
||
902 | mov eax, [esi+edx*4] |
||
903 | test al, PG_MAP |
||
904 | jz .not_present |
||
905 | test al, PG_WRITE |
||
906 | jz .resolve_readonly |
||
907 | ; normal case: writable page, just map with requested access |
||
908 | .map: |
||
909 | stdcall map_page, edi, eax, [req_access] |
||
910 | stc |
||
911 | .fail: |
||
912 | ret |
||
913 | .not_present: |
||
914 | ; check for alloc-on-demand page |
||
915 | test al, 2 |
||
916 | jz .fail |
||
917 | ; allocate new page, save it to source page table |
||
918 | push ecx |
||
919 | call alloc_page |
||
920 | pop ecx |
||
921 | test eax, eax |
||
922 | jz .fail |
||
923 | or al, PG_UW |
||
924 | mov [esi+edx*4], eax |
||
925 | jmp .map |
||
926 | .resolve_readonly: |
||
927 | ; readonly page, probably copy-on-write |
||
928 | ; check: readonly request of readonly page is ok |
||
929 | test [req_access], PG_WRITE |
||
930 | jz .map |
||
931 | ; find control structure for this page |
||
932 | pushf |
||
933 | cli |
||
934 | cld |
||
935 | push ebx ecx |
||
936 | mov eax, [slot] |
||
937 | shl eax, 8 |
||
938 | mov eax, [SLOT_BASE+eax+APPDATA.dlls_list_ptr] |
||
939 | test eax, eax |
||
940 | jz .no_hdll |
||
941 | mov ecx, [eax+HDLL.fd] |
||
942 | .scan_hdll: |
||
943 | cmp ecx, eax |
||
944 | jz .no_hdll |
||
945 | mov ebx, [ofs] |
||
946 | and ebx, not 0xFFF |
||
947 | sub ebx, [ecx+HDLL.base] |
||
948 | cmp ebx, [ecx+HDLL.size] |
||
949 | jb .hdll_found |
||
950 | mov ecx, [ecx+HDLL.fd] |
||
951 | jmp .scan_hdll |
||
952 | .no_hdll: |
||
953 | pop ecx ebx |
||
954 | popf |
||
955 | clc |
||
956 | ret |
||
957 | .hdll_found: |
||
958 | ; allocate page, save it in page table, map it, copy contents from base |
||
959 | mov eax, [ecx+HDLL.parent] |
||
960 | add ebx, [eax+DLLDESCR.data] |
||
961 | call alloc_page |
||
962 | test eax, eax |
||
963 | jz .no_hdll |
||
964 | or al, PG_UW |
||
965 | mov [esi+edx*4], eax |
||
966 | stdcall map_page, edi, eax, [req_access] |
||
967 | push esi edi |
||
968 | mov esi, ebx |
||
969 | mov ecx, 4096/4 |
||
970 | rep movsd |
||
971 | pop edi esi |
||
972 | pop ecx ebx |
||
973 | popf |
||
974 | stc |
||
975 | ret |
||
976 | endp |
||
977 | |||
978 | sys_IPC: |
||
979 | ;input: |
||
980 | ; ebx=1 - set ipc buffer area |
||
981 | ; ecx=address of buffer |
||
982 | ; edx=size of buffer |
||
983 | ; eax=2 - send message |
||
984 | ; ebx=PID |
||
985 | ; ecx=address of message |
||
986 | ; edx=size of message |
||
987 | |||
988 | dec ebx |
||
989 | jnz @f |
||
990 | |||
991 | mov eax, [current_slot] |
||
992 | pushf |
||
993 | cli |
||
994 | mov [eax+APPDATA.ipc_start], ecx ;set fields in extended information area |
||
995 | mov [eax+APPDATA.ipc_size], edx |
||
996 | |||
997 | add edx, ecx |
||
998 | add edx, 4095 |
||
999 | and edx, not 4095 |
||
1000 | |||
1001 | .touch: |
||
1002 | mov eax, [ecx] |
||
1003 | add ecx, 0x1000 |
||
1004 | cmp ecx, edx |
||
1005 | jb .touch |
||
1006 | |||
1007 | popf |
||
1008 | mov [esp+32], ebx ;ebx=0 |
||
1009 | ret |
||
1010 | |||
1011 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
||
1012 | ;2 |
||
1013 | @@: |
||
1014 | dec ebx |
||
1015 | jnz @f |
||
1016 | |||
1017 | stdcall sys_ipc_send, ecx, edx, esi |
||
1018 | mov [esp+32], eax |
||
1019 | ret |
||
1020 | @@: |
||
1021 | or eax, -1 |
||
1022 | mov [esp+32], eax |
||
1023 | ret |
||
1024 | |||
1025 | ;align 4 |
||
1026 | ;proc set_ipc_buff |
||
1027 | |||
1028 | ; mov eax,[current_slot] |
||
1029 | ; pushf |
||
1030 | ; cli |
||
1031 | ; mov [eax+APPDATA.ipc_start],ebx ;set fields in extended information area |
||
1032 | ; mov [eax+APPDATA.ipc_size],ecx |
||
1033 | ; |
||
1034 | ; add ecx, ebx |
||
1035 | ; add ecx, 4095 |
||
1036 | ; and ecx, not 4095 |
||
1037 | ; |
||
1038 | ;.touch: mov eax, [ebx] |
||
1039 | ; add ebx, 0x1000 |
||
1040 | ; cmp ebx, ecx |
||
1041 | ; jb .touch |
||
1042 | ; |
||
1043 | ; popf |
||
1044 | ; xor eax, eax |
||
1045 | ; ret |
||
1046 | ;endp |
||
1047 | |||
1048 | proc sys_ipc_send stdcall, PID:dword, msg_addr:dword, msg_size:dword |
||
1049 | locals |
||
1050 | dst_slot dd ? |
||
1051 | dst_offset dd ? |
||
1052 | buf_size dd ? |
||
1053 | used_buf dd ? |
||
1054 | endl |
||
1055 | |||
1056 | pushf |
||
1057 | cli |
||
1058 | |||
1059 | mov eax, [PID] |
||
1060 | call pid_to_slot |
||
1061 | test eax, eax |
||
1062 | jz .no_pid |
||
1063 | |||
1064 | mov [dst_slot], eax |
||
1065 | shl eax, 8 |
||
1066 | mov edi, [eax+SLOT_BASE+0xa0] ;is ipc area defined? |
||
1067 | test edi, edi |
||
1068 | jz .no_ipc_area |
||
1069 | |||
1070 | mov ebx, edi |
||
1071 | and ebx, 0xFFF |
||
1072 | mov [dst_offset], ebx |
||
1073 | |||
1074 | mov esi, [eax+SLOT_BASE+0xa4] |
||
1075 | mov [buf_size], esi |
||
1076 | |||
1077 | mov ecx, [ipc_tmp] |
||
1078 | cmp esi, 0x40000-0x1000; size of [ipc_tmp] minus one page |
||
1079 | jbe @f |
||
1080 | push esi edi |
||
1081 | add esi, 0x1000 |
||
1082 | stdcall alloc_kernel_space, esi |
||
1083 | mov ecx, eax |
||
1084 | pop edi esi |
||
1085 | @@: |
||
1086 | mov [used_buf], ecx |
||
1087 | stdcall map_mem, ecx, [dst_slot], \ |
||
1088 | edi, esi, PG_SW |
||
1089 | |||
1090 | mov edi, [dst_offset] |
||
1091 | add edi, [used_buf] |
||
1092 | cmp dword [edi], 0 |
||
1093 | jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now |
||
1094 | |||
1095 | mov edx, dword [edi+4] |
||
1096 | lea ebx, [edx+8] |
||
1097 | add ebx, [msg_size] |
||
1098 | cmp ebx, [buf_size] |
||
1099 | ja .buffer_overflow ;esi<0 - not enough memory in buffer |
||
1100 | |||
1101 | mov dword [edi+4], ebx |
||
1102 | mov eax, [TASK_BASE] |
||
1103 | mov eax, [eax+0x04] ;eax - our PID |
||
1104 | add edi, edx |
||
1105 | mov [edi], eax |
||
1106 | mov ecx, [msg_size] |
||
1107 | |||
1108 | mov [edi+4], ecx |
||
1109 | add edi, 8 |
||
1110 | mov esi, [msg_addr] |
||
1111 | ; add esi, new_app_base |
||
1112 | cld |
||
1113 | rep movsb |
||
1114 | |||
1115 | mov ebx, [ipc_tmp] |
||
1116 | mov edx, ebx |
||
1117 | shr ebx, 12 |
||
1118 | xor eax, eax |
||
1119 | mov [page_tabs+ebx*4], eax |
||
1120 | invlpg [edx] |
||
1121 | |||
1122 | mov ebx, [ipc_pdir] |
||
1123 | mov edx, ebx |
||
1124 | shr ebx, 12 |
||
1125 | xor eax, eax |
||
1126 | mov [page_tabs+ebx*4], eax |
||
1127 | invlpg [edx] |
||
1128 | |||
1129 | mov ebx, [ipc_ptab] |
||
1130 | mov edx, ebx |
||
1131 | shr ebx, 12 |
||
1132 | xor eax, eax |
||
1133 | mov [page_tabs+ebx*4], eax |
||
1134 | invlpg [edx] |
||
1135 | |||
1136 | mov eax, [dst_slot] |
||
1137 | shl eax, 8 |
||
1138 | or [eax+SLOT_BASE+0xA8], dword 0x40 |
||
1139 | push 0 |
||
1140 | jmp .ret |
||
1141 | .no_pid: |
||
1142 | popf |
||
1143 | mov eax, 4 |
||
1144 | ret |
||
1145 | .no_ipc_area: |
||
1146 | popf |
||
1147 | xor eax, eax |
||
1148 | inc eax |
||
1149 | ret |
||
1150 | .ipc_blocked: |
||
1151 | push 2 |
||
1152 | jmp .ret |
||
1153 | .buffer_overflow: |
||
1154 | push 3 |
||
1155 | .ret: |
||
1156 | mov eax, [used_buf] |
||
1157 | cmp eax, [ipc_tmp] |
||
1158 | jz @f |
||
1159 | stdcall free_kernel_space, eax |
||
1160 | @@: |
||
1161 | pop eax |
||
1162 | popf |
||
1163 | ret |
||
1164 | endp |
||
1165 | |||
1166 | align 4 |
||
1167 | sysfn_meminfo: |
||
1168 | |||
1169 | ; add ecx, new_app_base |
||
1170 | cmp ecx, OS_BASE |
||
1171 | jae .fail |
||
1172 | |||
1173 | mov eax, [pg_data.pages_count] |
||
1174 | mov [ecx], eax |
||
1175 | shl eax, 12 |
||
1176 | mov [esp+32], eax |
||
1177 | mov eax, [pg_data.pages_free] |
||
1178 | mov [ecx+4], eax |
||
1179 | mov eax, [pg_data.pages_faults] |
||
1180 | mov [ecx+8], eax |
||
1181 | mov eax, [heap_size] |
||
1182 | mov [ecx+12], eax |
||
1183 | mov eax, [heap_free] |
||
1184 | mov [ecx+16], eax |
||
1185 | mov eax, [heap_blocks] |
||
1186 | mov [ecx+20], eax |
||
1187 | mov eax, [free_blocks] |
||
1188 | mov [ecx+24], eax |
||
1189 | ret |
||
1190 | .fail: |
||
1191 | or dword [esp+32], -1 |
||
1192 | ret |
||
1193 | |||
1194 | align 4 |
||
1195 | f68: |
||
1196 | cmp ebx, 4 |
||
1197 | jbe sys_sheduler |
||
1198 | |||
1199 | cmp ebx, 11 |
||
1200 | jb .fail |
||
1201 | |||
3786 | Serge | 1202 | cmp ebx, 27 |
2288 | clevermous | 1203 | ja .fail |
1204 | |||
1205 | jmp dword [f68call+ebx*4-11*4] |
||
1206 | .11: |
||
1207 | call init_heap |
||
1208 | mov [esp+32], eax |
||
1209 | ret |
||
1210 | .12: |
||
1211 | stdcall user_alloc, ecx |
||
1212 | mov [esp+32], eax |
||
1213 | ret |
||
1214 | .13: |
||
1215 | stdcall user_free, ecx |
||
1216 | mov [esp+32], eax |
||
1217 | ret |
||
1218 | .14: |
||
1219 | cmp ecx, OS_BASE |
||
1220 | jae .fail |
||
1221 | mov edi, ecx |
||
1222 | call get_event_ex |
||
1223 | mov [esp+32], eax |
||
1224 | ret |
||
1225 | .16: |
||
1226 | test ecx, ecx |
||
1227 | jz .fail |
||
1228 | cmp ecx, OS_BASE |
||
1229 | jae .fail |
||
1230 | stdcall get_service, ecx |
||
1231 | mov [esp+32], eax |
||
1232 | ret |
||
1233 | .17: |
||
1234 | call srv_handlerEx ;ecx |
||
1235 | mov [esp+32], eax |
||
1236 | ret |
||
1237 | .19: |
||
1238 | cmp ecx, OS_BASE |
||
1239 | jae .fail |
||
1240 | stdcall load_library, ecx |
||
1241 | mov [esp+32], eax |
||
1242 | ret |
||
1243 | .20: |
||
1244 | mov eax, edx |
||
1245 | mov ebx, ecx |
||
1246 | call user_realloc ;in: eax = pointer, ebx = new size |
||
1247 | mov [esp+32], eax |
||
1248 | ret |
||
1249 | .21: |
||
1250 | cmp ecx, OS_BASE |
||
1251 | jae .fail |
||
1252 | |||
2647 | mario79 | 1253 | cmp edx, OS_BASE |
2288 | clevermous | 1254 | jae .fail |
1255 | |||
1256 | mov edi, edx |
||
1257 | stdcall load_PE, ecx |
||
1258 | mov esi, eax |
||
1259 | test eax, eax |
||
1260 | jz @F |
||
1261 | |||
1262 | push edi |
||
1263 | push DRV_ENTRY |
||
1264 | call eax |
||
1265 | add esp, 8 |
||
1266 | test eax, eax |
||
1267 | jz @F |
||
1268 | |||
1269 | mov [eax+SRV.entry], esi |
||
1270 | |||
1271 | @@: |
||
1272 | mov [esp+32], eax |
||
1273 | ret |
||
1274 | .22: |
||
1275 | cmp ecx, OS_BASE |
||
1276 | jae .fail |
||
1277 | |||
1278 | stdcall shmem_open, ecx, edx, esi |
||
1279 | mov [esp+24], edx |
||
1280 | mov [esp+32], eax |
||
1281 | ret |
||
1282 | |||
1283 | .23: |
||
1284 | cmp ecx, OS_BASE |
||
1285 | jae .fail |
||
1286 | |||
1287 | stdcall shmem_close, ecx |
||
1288 | mov [esp+32], eax |
||
1289 | ret |
||
1290 | .24: |
||
1291 | mov eax, [current_slot] |
||
1292 | xchg ecx, [eax+APPDATA.exc_handler] |
||
1293 | xchg edx, [eax+APPDATA.except_mask] |
||
1294 | mov [esp+32], ecx ; reg_eax+8 |
||
1295 | mov [esp+20], edx ; reg_ebx+8 |
||
1296 | ret |
||
1297 | .25: |
||
1298 | cmp ecx, 32 |
||
1299 | jae .fail |
||
1300 | mov eax, [current_slot] |
||
1301 | btr [eax+APPDATA.except_mask], ecx |
||
1302 | setc byte[esp+32] |
||
1303 | jecxz @f |
||
1304 | bts [eax+APPDATA.except_mask], ecx |
||
1305 | @@: |
||
1306 | ret |
||
1307 | |||
2400 | Serge | 1308 | .26: |
1309 | stdcall user_unmap, ecx, edx, esi |
||
1310 | mov [esp+32], eax |
||
1311 | ret |
||
1312 | |||
3786 | Serge | 1313 | .27: |
1314 | cmp ecx, OS_BASE |
||
1315 | jae .fail |
||
1316 | |||
1317 | stdcall load_file_umode, ecx |
||
1318 | mov [esp+24], edx |
||
1319 | mov [esp+32], eax |
||
1320 | ret |
||
1321 | |||
2288 | clevermous | 1322 | .fail: |
1323 | xor eax, eax |
||
1324 | mov [esp+32], eax |
||
1325 | ret |
||
1326 | |||
1327 | |||
1328 | align 4 |
||
1329 | f68call: ; keep this table closer to main code |
||
1330 | |||
1331 | dd f68.11 ; init_heap |
||
1332 | dd f68.12 ; user_alloc |
||
1333 | dd f68.13 ; user_free |
||
1334 | dd f68.14 ; get_event_ex |
||
1335 | dd f68.fail ; moved to f68.24 |
||
1336 | dd f68.16 ; get_service |
||
1337 | dd f68.17 ; call_service |
||
1338 | dd f68.fail ; moved to f68.25 |
||
1339 | dd f68.19 ; load_dll |
||
1340 | dd f68.20 ; user_realloc |
||
1341 | dd f68.21 ; load_driver |
||
1342 | dd f68.22 ; shmem_open |
||
1343 | dd f68.23 ; shmem_close |
||
2400 | Serge | 1344 | dd f68.24 ; set exception handler |
1345 | dd f68.25 ; unmask exception |
||
1346 | dd f68.26 ; user_unmap |
||
3786 | Serge | 1347 | dd f68.27 ; load_file_umode |
2288 | clevermous | 1348 | |
1349 | |||
1350 | align 4 |
||
1351 | proc load_pe_driver stdcall, file:dword |
||
1352 | |||
1353 | stdcall load_PE, [file] |
||
1354 | test eax, eax |
||
1355 | jz .fail |
||
1356 | |||
1357 | mov esi, eax |
||
1358 | stdcall eax, DRV_ENTRY |
||
1359 | test eax, eax |
||
1360 | jz .fail |
||
1361 | |||
1362 | mov [eax+SRV.entry], esi |
||
1363 | ret |
||
1364 | |||
1365 | .fail: |
||
1366 | xor eax, eax |
||
1367 | ret |
||
1368 | endp |
||
1369 | |||
1370 | |||
1371 | align 4 |
||
1372 | proc init_mtrr |
||
1373 | |||
3732 | Serge | 1374 | cmp [BOOT_VARS+BOOT_MTRR], byte 2 |
2288 | clevermous | 1375 | je .exit |
1376 | |||
1377 | bt [cpu_caps], CAPS_MTRR |
||
1378 | jnc .exit |
||
1379 | |||
1380 | mov eax, cr0 |
||
1381 | or eax, 0x60000000 ;disable caching |
||
1382 | mov cr0, eax |
||
1383 | wbinvd ;invalidate cache |
||
1384 | |||
1385 | mov ecx, 0x2FF |
||
1386 | rdmsr ; |
||
1387 | ; has BIOS already initialized MTRRs? |
||
1388 | test ah, 8 |
||
1389 | jnz .skip_init |
||
1390 | ; rarely needed, so mainly placeholder |
||
1391 | ; main memory - cached |
||
1392 | push eax |
||
1393 | |||
1394 | mov eax, [MEM_AMOUNT] |
||
1395 | ; round eax up to next power of 2 |
||
1396 | dec eax |
||
1397 | bsr ecx, eax |
||
1398 | mov ebx, 2 |
||
1399 | shl ebx, cl |
||
1400 | dec ebx |
||
1401 | ; base of memory range = 0, type of memory range = MEM_WB |
||
1402 | xor edx, edx |
||
1403 | mov eax, MEM_WB |
||
1404 | mov ecx, 0x200 |
||
1405 | wrmsr |
||
1406 | ; mask of memory range = 0xFFFFFFFFF - (size - 1), ebx = size - 1 |
||
1407 | mov eax, 0xFFFFFFFF |
||
1408 | mov edx, 0x0000000F |
||
1409 | sub eax, ebx |
||
1410 | sbb edx, 0 |
||
1411 | or eax, 0x800 |
||
1412 | inc ecx |
||
1413 | wrmsr |
||
1414 | ; clear unused MTRRs |
||
1415 | xor eax, eax |
||
1416 | xor edx, edx |
||
1417 | @@: |
||
1418 | wrmsr |
||
1419 | inc ecx |
||
1420 | cmp ecx, 0x210 |
||
1421 | jb @b |
||
1422 | ; enable MTRRs |
||
1423 | pop eax |
||
1424 | or ah, 8 |
||
1425 | and al, 0xF0; default memtype = UC |
||
1426 | mov ecx, 0x2FF |
||
1427 | wrmsr |
||
1428 | .skip_init: |
||
1429 | stdcall set_mtrr, [LFBAddress], [LFBSize], MEM_WC |
||
1430 | |||
1431 | wbinvd ;again invalidate |
||
1432 | |||
1433 | mov eax, cr0 |
||
1434 | and eax, not 0x60000000 |
||
1435 | mov cr0, eax ; enable caching |
||
1436 | .exit: |
||
1437 | ret |
||
1438 | endp |
||
1439 | |||
1440 | align 4 |
||
1441 | proc set_mtrr stdcall, base:dword,size:dword,mem_type:dword |
||
1442 | ; find unused register |
||
1443 | mov ecx, 0x201 |
||
1444 | @@: |
||
1445 | rdmsr |
||
1446 | dec ecx |
||
1447 | test ah, 8 |
||
1448 | jz .found |
||
1449 | rdmsr |
||
1450 | mov al, 0; clear memory type field |
||
1451 | cmp eax, [base] |
||
1452 | jz .ret |
||
1453 | add ecx, 3 |
||
1454 | cmp ecx, 0x210 |
||
1455 | jb @b |
||
1456 | ; no free registers, ignore the call |
||
1457 | .ret: |
||
1458 | ret |
||
1459 | .found: |
||
1460 | ; found, write values |
||
1461 | xor edx, edx |
||
1462 | mov eax, [base] |
||
1463 | or eax, [mem_type] |
||
1464 | wrmsr |
||
1465 | |||
1466 | mov ebx, [size] |
||
1467 | dec ebx |
||
1468 | mov eax, 0xFFFFFFFF |
||
1469 | mov edx, 0x00000000 |
||
1470 | sub eax, ebx |
||
1471 | sbb edx, 0 |
||
1472 | or eax, 0x800 |
||
1473 | inc ecx |
||
1474 | wrmsr |
||
1475 | ret |
||
1476 | endp |
||
1477 | |||
1478 | align 4 |
||
1479 | proc create_ring_buffer stdcall, size:dword, flags:dword |
||
1480 | locals |
||
1481 | buf_ptr dd ? |
||
1482 | endl |
||
1483 | |||
1484 | mov eax, [size] |
||
1485 | test eax, eax |
||
1486 | jz .fail |
||
1487 | |||
1488 | add eax, eax |
||
1489 | stdcall alloc_kernel_space, eax |
||
1490 | test eax, eax |
||
1491 | jz .fail |
||
1492 | |||
1493 | push ebx |
||
1494 | |||
1495 | mov [buf_ptr], eax |
||
1496 | |||
1497 | mov ebx, [size] |
||
1498 | shr ebx, 12 |
||
1499 | push ebx |
||
1500 | |||
1501 | stdcall alloc_pages, ebx |
||
1502 | pop ecx |
||
1503 | |||
1504 | test eax, eax |
||
1505 | jz .mm_fail |
||
1506 | |||
1507 | push edi |
||
1508 | |||
1509 | or eax, [flags] |
||
1510 | mov edi, [buf_ptr] |
||
1511 | mov ebx, [buf_ptr] |
||
1512 | mov edx, ecx |
||
1513 | shl edx, 2 |
||
1514 | shr edi, 10 |
||
1515 | @@: |
||
1516 | mov [page_tabs+edi], eax |
||
1517 | mov [page_tabs+edi+edx], eax |
||
1518 | invlpg [ebx] |
||
1519 | invlpg [ebx+0x10000] |
||
1520 | add eax, 0x1000 |
||
1521 | add ebx, 0x1000 |
||
1522 | add edi, 4 |
||
1523 | dec ecx |
||
1524 | jnz @B |
||
1525 | |||
1526 | mov eax, [buf_ptr] |
||
1527 | pop edi |
||
1528 | pop ebx |
||
1529 | ret |
||
1530 | .mm_fail: |
||
1531 | stdcall free_kernel_space, [buf_ptr] |
||
1532 | xor eax, eax |
||
1533 | pop ebx |
||
1534 | .fail: |
||
1535 | ret |
||
1536 | endp |
||
2466 | Serge | 1537 | |
1538 | |||
1539 | align 4 |
||
1540 | proc print_mem |
||
1541 | mov edi, BOOT_VAR + 0x9104 |
||
1542 | mov ecx, [edi-4] |
||
1543 | test ecx, ecx |
||
1544 | jz .done |
||
1545 | |||
1546 | @@: |
||
1547 | mov eax, [edi] |
||
1548 | mov edx, [edi+4] |
||
1549 | add eax, [edi+8] |
||
1550 | adc edx, [edi+12] |
||
1551 | |||
1552 | DEBUGF 1, "K : E820 %x%x - %x%x type %d\n", \ |
||
1553 | [edi+4], [edi],\ |
||
1554 | edx, eax, [edi+16] |
||
1555 | add edi, 20 |
||
1556 | dec ecx |
||
1557 | jnz @b |
||
1558 | .done: |
||
1559 | ret |
||
1560 | endp0>>=> |