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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: 5032 $ |
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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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4424 | Serge | 126 | ;proc map_page stdcall,lin_addr:dword,phis_addr:dword,flags:dword |
127 | map_page: |
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2288 | clevermous | 128 | push ebx |
4424 | Serge | 129 | mov eax, [esp+12] ; phis_addr |
2288 | clevermous | 130 | and eax, not 0xFFF |
4424 | Serge | 131 | or eax, [esp+16] ; flags |
132 | mov ebx, [esp+8] ; lin_addr |
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2288 | clevermous | 133 | shr ebx, 12 |
134 | mov [page_tabs+ebx*4], eax |
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4424 | Serge | 135 | mov eax, [esp+8] ; lin_addr |
136 | pop ebx |
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2288 | clevermous | 137 | invlpg [eax] |
4424 | Serge | 138 | ret 12 |
2288 | clevermous | 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 | |||
5032 | clevermous | 353 | ; Allocates a physical page for master page table |
354 | ; that duplicates first Mb of OS_BASE at address 0; |
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355 | ; used for starting APs and for shutting down, |
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356 | ; where it is important to execute code in trivial-mapped pages. |
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357 | ; Returns eax = allocated physical page. |
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358 | proc create_trampoline_pgmap |
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359 | ; The only non-trivial moment: |
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360 | ; we need a linear address to fill information, |
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361 | ; but we don't need it outside of this function, |
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362 | ; so we're returning physical address. |
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363 | ; Therefore, allocate memory with kernel_alloc, |
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364 | ; this will allocate physical page and a linear address somewhere, |
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365 | ; and deallocate only linear address with free_kernel_space. |
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366 | stdcall kernel_alloc, 0x1000 |
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367 | mov edi, eax |
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368 | mov esi, master_tab |
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369 | mov ecx, 1024 |
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370 | rep movsd |
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371 | mov ecx, [master_tab+(OS_BASE shr 20)] |
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372 | mov [eax], ecx |
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373 | mov edi, eax |
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374 | call get_pg_addr |
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375 | push eax |
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376 | stdcall free_kernel_space, edi |
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377 | pop eax |
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378 | ret |
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379 | endp |
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380 | |||
2288 | clevermous | 381 | align 4 |
382 | proc init_LFB |
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383 | locals |
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384 | pg_count dd ? |
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385 | endl |
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386 | |||
387 | cmp dword [LFBAddress], -1 |
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388 | jne @f |
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3732 | Serge | 389 | mov [BOOT_VARS+BOOT_MTRR], byte 2 |
2398 | mario79 | 390 | ; max VGA=640*480*4=1228800 bytes |
391 | ; + 32*640*4=81920 bytes for mouse pointer |
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392 | stdcall alloc_pages, ((1228800+81920)/4096) |
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2288 | clevermous | 393 | |
394 | push eax |
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395 | call alloc_page |
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396 | stdcall map_page_table, LFB_BASE, eax |
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397 | pop eax |
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398 | or eax, PG_UW |
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399 | mov ebx, LFB_BASE |
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2398 | mario79 | 400 | ; max VGA=640*480*4=1228800 bytes |
401 | ; + 32*640*4=81920 bytes for mouse pointer |
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402 | mov ecx, (1228800+81920)/4096 |
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2288 | clevermous | 403 | call commit_pages |
404 | mov [LFBAddress], dword LFB_BASE |
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405 | ret |
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406 | @@: |
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407 | test [SCR_MODE], word 0100000000000000b |
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408 | jnz @f |
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3732 | Serge | 409 | mov [BOOT_VARS+BOOT_MTRR], byte 2 |
2288 | clevermous | 410 | ret |
411 | @@: |
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412 | call init_mtrr |
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413 | |||
414 | mov edx, LFB_BASE |
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415 | mov esi, [LFBAddress] |
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416 | mov edi, 0x00C00000 |
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417 | mov dword [exp_lfb+4], edx |
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418 | |||
419 | shr edi, 12 |
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420 | mov [pg_count], edi |
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421 | shr edi, 10 |
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422 | |||
423 | bt [cpu_caps], CAPS_PSE |
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424 | jnc .map_page_tables |
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425 | or esi, PG_LARGE+PG_UW |
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426 | mov edx, sys_pgdir+(LFB_BASE shr 20) |
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427 | @@: |
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428 | mov [edx], esi |
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429 | add edx, 4 |
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430 | add esi, 0x00400000 |
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431 | dec edi |
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432 | jnz @B |
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433 | |||
434 | bt [cpu_caps], CAPS_PGE |
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435 | jnc @F |
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436 | or dword [sys_pgdir+(LFB_BASE shr 20)], PG_GLOBAL |
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437 | @@: |
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438 | mov dword [LFBAddress], LFB_BASE |
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439 | mov eax, cr3 ;flush TLB |
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440 | mov cr3, eax |
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441 | ret |
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442 | |||
443 | .map_page_tables: |
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444 | |||
445 | @@: |
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446 | call alloc_page |
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447 | stdcall map_page_table, edx, eax |
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448 | add edx, 0x00400000 |
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449 | dec edi |
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450 | jnz @B |
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451 | |||
452 | mov eax, [LFBAddress] |
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453 | mov edi, page_tabs + (LFB_BASE shr 10) |
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454 | or eax, PG_UW |
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455 | mov ecx, [pg_count] |
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456 | cld |
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457 | @@: |
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458 | stosd |
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459 | add eax, 0x1000 |
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460 | dec ecx |
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461 | jnz @B |
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462 | |||
463 | mov dword [LFBAddress], LFB_BASE |
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464 | mov eax, cr3 ;flush TLB |
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465 | mov cr3, eax |
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466 | |||
467 | ret |
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468 | endp |
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469 | |||
470 | align 4 |
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471 | proc new_mem_resize stdcall, new_size:dword |
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472 | |||
2594 | Serge | 473 | push ebx |
474 | push esi |
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475 | push edi |
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2288 | clevermous | 476 | |
2594 | Serge | 477 | mov edx, [current_slot] |
478 | cmp [edx+APPDATA.heap_base], 0 |
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479 | jne .exit |
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480 | |||
2288 | clevermous | 481 | mov edi, [new_size] |
482 | add edi, 4095 |
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483 | and edi, not 4095 |
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484 | mov [new_size], edi |
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485 | |||
486 | mov esi, [edx+APPDATA.mem_size] |
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487 | add esi, 4095 |
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488 | and esi, not 4095 |
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489 | |||
490 | cmp edi, esi |
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2594 | Serge | 491 | ja .expand |
492 | je .exit |
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2288 | clevermous | 493 | |
2594 | Serge | 494 | mov ebx, edi |
2288 | clevermous | 495 | shr edi, 12 |
496 | shr esi, 12 |
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2594 | Serge | 497 | |
498 | mov ecx, pg_data.mutex |
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499 | call mutex_lock |
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2288 | clevermous | 500 | @@: |
501 | mov eax, [app_page_tabs+edi*4] |
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502 | test eax, 1 |
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503 | jz .next |
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2594 | Serge | 504 | |
505 | mov dword [app_page_tabs+edi*4], 0 |
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2288 | clevermous | 506 | invlpg [ebx] |
507 | call free_page |
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508 | |||
509 | .next: |
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2594 | Serge | 510 | inc edi |
2595 | Serge | 511 | add ebx, 0x1000 |
2288 | clevermous | 512 | cmp edi, esi |
513 | jb @B |
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514 | |||
2594 | Serge | 515 | mov ecx, pg_data.mutex |
516 | call mutex_unlock |
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517 | |||
2288 | clevermous | 518 | .update_size: |
2594 | Serge | 519 | mov edx, [current_slot] |
2288 | clevermous | 520 | mov ebx, [new_size] |
521 | call update_mem_size |
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2594 | Serge | 522 | .exit: |
523 | pop edi |
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524 | pop esi |
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525 | pop ebx |
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2288 | clevermous | 526 | xor eax, eax |
527 | ret |
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2594 | Serge | 528 | |
2288 | clevermous | 529 | .expand: |
530 | |||
2594 | Serge | 531 | mov ecx, pg_data.mutex |
532 | call mutex_lock |
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2288 | clevermous | 533 | |
2594 | Serge | 534 | xchg esi, edi |
535 | |||
536 | push esi ;new size |
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537 | push edi ;old size |
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538 | |||
2288 | clevermous | 539 | add edi, 0x3FFFFF |
540 | and edi, not(0x3FFFFF) |
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541 | add esi, 0x3FFFFF |
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542 | and esi, not(0x3FFFFF) |
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543 | |||
2594 | Serge | 544 | cmp edi, esi |
2288 | clevermous | 545 | jae .grow |
2594 | Serge | 546 | @@: |
2288 | clevermous | 547 | call alloc_page |
548 | test eax, eax |
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2594 | Serge | 549 | jz .exit_fail |
2288 | clevermous | 550 | |
551 | stdcall map_page_table, edi, eax |
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552 | |||
553 | push edi |
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554 | shr edi, 10 |
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555 | add edi, page_tabs |
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556 | mov ecx, 1024 |
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557 | xor eax, eax |
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558 | cld |
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559 | rep stosd |
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560 | pop edi |
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561 | |||
562 | add edi, 0x00400000 |
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563 | cmp edi, esi |
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564 | jb @B |
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565 | .grow: |
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2594 | Serge | 566 | pop edi ;old size |
567 | pop ecx ;new size |
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2288 | clevermous | 568 | |
2594 | Serge | 569 | shr edi, 10 |
570 | shr ecx, 10 |
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571 | sub ecx, edi |
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572 | shr ecx, 2 ;pages count |
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573 | mov eax, 2 |
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574 | |||
575 | add edi, app_page_tabs |
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2288 | clevermous | 576 | rep stosd |
577 | |||
2594 | Serge | 578 | mov ecx, pg_data.mutex |
579 | call mutex_unlock |
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2288 | clevermous | 580 | |
581 | jmp .update_size |
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2594 | Serge | 582 | |
583 | .exit_fail: |
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2288 | clevermous | 584 | mov ecx, pg_data.mutex |
585 | call mutex_unlock |
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586 | |||
2594 | Serge | 587 | add esp, 8 |
588 | pop edi |
||
589 | pop esi |
||
590 | pop ebx |
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2288 | clevermous | 591 | xor eax, eax |
592 | inc eax |
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593 | ret |
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594 | endp |
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595 | |||
2594 | Serge | 596 | |
597 | align 4 |
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2288 | clevermous | 598 | update_mem_size: |
599 | ; in: edx = slot base |
||
600 | ; ebx = new memory size |
||
601 | ; destroys eax,ecx,edx |
||
602 | |||
603 | mov [APPDATA.mem_size+edx], ebx |
||
604 | ;search threads and update |
||
605 | ;application memory size infomation |
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606 | mov ecx, [APPDATA.dir_table+edx] |
||
607 | mov eax, 2 |
||
608 | |||
609 | .search_threads: |
||
610 | ;eax = current slot |
||
611 | ;ebx = new memory size |
||
612 | ;ecx = page directory |
||
613 | cmp eax, [TASK_COUNT] |
||
614 | jg .search_threads_end |
||
615 | mov edx, eax |
||
616 | shl edx, 5 |
||
617 | cmp word [CURRENT_TASK+edx+TASKDATA.state], 9 ;if slot empty? |
||
618 | jz .search_threads_next |
||
619 | shl edx, 3 |
||
620 | cmp [SLOT_BASE+edx+APPDATA.dir_table], ecx ;if it is our thread? |
||
621 | jnz .search_threads_next |
||
622 | mov [SLOT_BASE+edx+APPDATA.mem_size], ebx ;update memory size |
||
623 | .search_threads_next: |
||
624 | inc eax |
||
625 | jmp .search_threads |
||
626 | .search_threads_end: |
||
627 | ret |
||
628 | |||
629 | ; param |
||
630 | ; eax= linear address |
||
631 | ; |
||
632 | ; retval |
||
633 | ; eax= phisical page address |
||
634 | |||
635 | align 4 |
||
636 | get_pg_addr: |
||
3166 | clevermous | 637 | sub eax, OS_BASE |
638 | cmp eax, 0x400000 |
||
639 | jb @f |
||
2288 | clevermous | 640 | shr eax, 12 |
3166 | clevermous | 641 | mov eax, [page_tabs+(eax+(OS_BASE shr 12))*4] |
642 | @@: |
||
2288 | clevermous | 643 | and eax, 0xFFFFF000 |
644 | ret |
||
645 | |||
646 | |||
647 | align 4 |
||
648 | ; Now it is called from core/sys32::exc_c (see stack frame there) |
||
649 | proc page_fault_handler |
||
650 | |||
651 | .err_addr equ ebp-4 |
||
652 | |||
653 | push ebx ;save exception number (#PF) |
||
654 | mov ebp, esp |
||
655 | mov ebx, cr2 |
||
656 | push ebx ;that is locals: .err_addr = cr2 |
||
657 | inc [pg_data.pages_faults] |
||
658 | |||
659 | mov eax, [pf_err_code] |
||
660 | |||
661 | cmp ebx, OS_BASE ;ebx == .err_addr |
||
3539 | clevermous | 662 | jb .user_space ;страница в памяти приложения ; |
2288 | clevermous | 663 | |
664 | cmp ebx, page_tabs |
||
3539 | clevermous | 665 | jb .kernel_space ;страница в памяти ядра |
2288 | clevermous | 666 | |
667 | cmp ebx, kernel_tabs |
||
3539 | clevermous | 668 | jb .alloc;.app_tabs ;таблицы страниц приложения ; |
669 | ;просто создадим одну |
||
670 | if 0 ;пока это просто лишнее |
||
2288 | clevermous | 671 | cmp ebx, LFB_BASE |
3539 | clevermous | 672 | jb .core_tabs ;таблицы страниц ядра |
673 | ;Ошибка |
||
2288 | clevermous | 674 | .lfb: |
3539 | clevermous | 675 | ;область LFB |
676 | ;Ошибка |
||
2288 | clevermous | 677 | jmp .fail |
678 | end if |
||
679 | .core_tabs: |
||
680 | .fail: ;simply return to caller |
||
681 | mov esp, ebp |
||
682 | pop ebx ;restore exception number (#PF) |
||
683 | ret |
||
684 | |||
685 | ; xchg bx, bx |
||
686 | ; add esp,12 ;clear in stack: locals(.err_addr) + #PF + ret_to_caller |
||
687 | ; restore_ring3_context |
||
688 | ; iretd |
||
689 | |||
690 | .user_space: |
||
691 | test eax, PG_MAP |
||
3539 | clevermous | 692 | jnz .err_access ;Страница присутствует |
693 | ;Ошибка доступа ? |
||
2288 | clevermous | 694 | |
695 | shr ebx, 12 |
||
696 | mov ecx, ebx |
||
697 | shr ecx, 10 |
||
698 | mov edx, [master_tab+ecx*4] |
||
699 | test edx, PG_MAP |
||
3539 | clevermous | 700 | jz .fail ;таблица страниц не создана |
701 | ;неверный адрес в программе |
||
2288 | clevermous | 702 | |
703 | mov eax, [page_tabs+ebx*4] |
||
704 | test eax, 2 |
||
3539 | clevermous | 705 | jz .fail ;адрес не зарезервирован для ; |
706 | ;использования. Ошибка |
||
2288 | clevermous | 707 | .alloc: |
708 | call alloc_page |
||
709 | test eax, eax |
||
710 | jz .fail |
||
711 | |||
712 | stdcall map_page, [.err_addr], eax, PG_UW |
||
713 | |||
714 | mov edi, [.err_addr] |
||
715 | and edi, 0xFFFFF000 |
||
716 | mov ecx, 1024 |
||
717 | xor eax, eax |
||
718 | ;cld ;caller is duty for this |
||
719 | rep stosd |
||
720 | .exit: ;iret with repeat fault instruction |
||
721 | add esp, 12;clear in stack: locals(.err_addr) + #PF + ret_to_caller |
||
722 | restore_ring3_context |
||
723 | iretd |
||
724 | |||
725 | .err_access: |
||
726 | ; access denied? this may be a result of copy-on-write protection for DLL |
||
727 | ; check list of HDLLs |
||
728 | and ebx, not 0xFFF |
||
729 | mov eax, [CURRENT_TASK] |
||
730 | shl eax, 8 |
||
731 | mov eax, [SLOT_BASE+eax+APPDATA.dlls_list_ptr] |
||
732 | test eax, eax |
||
733 | jz .fail |
||
734 | mov esi, [eax+HDLL.fd] |
||
735 | .scan_hdll: |
||
736 | cmp esi, eax |
||
737 | jz .fail |
||
738 | mov edx, ebx |
||
739 | sub edx, [esi+HDLL.base] |
||
740 | cmp edx, [esi+HDLL.size] |
||
741 | jb .fault_in_hdll |
||
742 | .scan_hdll.next: |
||
743 | mov esi, [esi+HDLL.fd] |
||
744 | jmp .scan_hdll |
||
745 | .fault_in_hdll: |
||
746 | ; allocate new page, map it as rw and copy data |
||
747 | call alloc_page |
||
748 | test eax, eax |
||
749 | jz .fail |
||
750 | stdcall map_page, ebx, eax, PG_UW |
||
751 | mov edi, ebx |
||
752 | mov ecx, 1024 |
||
753 | sub ebx, [esi+HDLL.base] |
||
754 | mov esi, [esi+HDLL.parent] |
||
755 | mov esi, [esi+DLLDESCR.data] |
||
756 | add esi, ebx |
||
757 | rep movsd |
||
758 | jmp .exit |
||
759 | |||
760 | .kernel_space: |
||
761 | test eax, PG_MAP |
||
3539 | clevermous | 762 | jz .fail ;страница не присутствует |
2288 | clevermous | 763 | |
764 | test eax, 12 ;U/S (+below) |
||
3539 | clevermous | 765 | jnz .fail ;приложение обратилось к памяти |
766 | ;ядра |
||
2288 | clevermous | 767 | ;test eax, 8 |
3539 | clevermous | 768 | ;jnz .fail ;установлен зарезервированный бит |
769 | ;в таблицах страниц. добавлено в P4/Xeon |
||
2288 | clevermous | 770 | |
3539 | clevermous | 771 | ;попытка записи в защищённую страницу ядра |
2288 | clevermous | 772 | |
773 | cmp ebx, tss._io_map_0 |
||
774 | jb .fail |
||
775 | |||
776 | cmp ebx, tss._io_map_0+8192 |
||
777 | jae .fail |
||
778 | |||
779 | ; io permission map |
||
780 | ; copy-on-write protection |
||
781 | |||
782 | call alloc_page |
||
783 | test eax, eax |
||
784 | jz .fail |
||
785 | |||
786 | push eax |
||
787 | stdcall map_page, [.err_addr], eax, dword PG_SW |
||
788 | pop eax |
||
789 | mov edi, [.err_addr] |
||
790 | and edi, -4096 |
||
791 | lea esi, [edi+(not tss._io_map_0)+1]; -tss._io_map_0 |
||
792 | |||
793 | mov ebx, esi |
||
794 | shr ebx, 12 |
||
795 | mov edx, [current_slot] |
||
796 | or eax, PG_SW |
||
797 | mov [edx+APPDATA.io_map+ebx*4], eax |
||
798 | |||
799 | add esi, [default_io_map] |
||
800 | mov ecx, 4096/4 |
||
801 | ;cld ;caller is duty for this |
||
802 | rep movsd |
||
803 | jmp .exit |
||
804 | endp |
||
805 | |||
806 | ; returns number of mapped bytes |
||
807 | proc map_mem stdcall, lin_addr:dword,slot:dword,\ |
||
808 | ofs:dword,buf_size:dword,req_access:dword |
||
809 | push 0 ; initialize number of mapped bytes |
||
810 | |||
811 | cmp [buf_size], 0 |
||
812 | jz .exit |
||
813 | |||
814 | mov eax, [slot] |
||
815 | shl eax, 8 |
||
816 | mov eax, [SLOT_BASE+eax+APPDATA.dir_table] |
||
817 | and eax, 0xFFFFF000 |
||
818 | |||
819 | stdcall map_page, [ipc_pdir], eax, PG_UW |
||
820 | mov ebx, [ofs] |
||
821 | shr ebx, 22 |
||
822 | mov esi, [ipc_pdir] |
||
823 | mov edi, [ipc_ptab] |
||
824 | mov eax, [esi+ebx*4] |
||
825 | and eax, 0xFFFFF000 |
||
826 | jz .exit |
||
827 | stdcall map_page, edi, eax, PG_UW |
||
828 | ; inc ebx |
||
829 | ; add edi, 0x1000 |
||
830 | ; mov eax, [esi+ebx*4] |
||
831 | ; test eax, eax |
||
832 | ; jz @f |
||
833 | ; and eax, 0xFFFFF000 |
||
834 | ; stdcall map_page, edi, eax |
||
835 | |||
836 | @@: |
||
837 | mov edi, [lin_addr] |
||
838 | and edi, 0xFFFFF000 |
||
839 | mov ecx, [buf_size] |
||
840 | add ecx, 4095 |
||
841 | shr ecx, 12 |
||
842 | inc ecx |
||
843 | |||
844 | mov edx, [ofs] |
||
845 | shr edx, 12 |
||
846 | and edx, 0x3FF |
||
847 | mov esi, [ipc_ptab] |
||
848 | |||
849 | .map: |
||
850 | stdcall safe_map_page, [slot], [req_access], [ofs] |
||
851 | jnc .exit |
||
852 | add dword [ebp-4], 4096 |
||
853 | add [ofs], 4096 |
||
854 | dec ecx |
||
855 | jz .exit |
||
856 | add edi, 0x1000 |
||
857 | inc edx |
||
858 | cmp edx, 0x400 |
||
859 | jnz .map |
||
860 | inc ebx |
||
861 | mov eax, [ipc_pdir] |
||
862 | mov eax, [eax+ebx*4] |
||
863 | and eax, 0xFFFFF000 |
||
864 | jz .exit |
||
865 | stdcall map_page, esi, eax, PG_UW |
||
866 | xor edx, edx |
||
867 | jmp .map |
||
868 | |||
869 | .exit: |
||
870 | pop eax |
||
871 | ret |
||
872 | endp |
||
873 | |||
874 | proc map_memEx stdcall, lin_addr:dword,slot:dword,\ |
||
875 | ofs:dword,buf_size:dword,req_access:dword |
||
876 | push 0 ; initialize number of mapped bytes |
||
877 | |||
878 | cmp [buf_size], 0 |
||
879 | jz .exit |
||
880 | |||
881 | mov eax, [slot] |
||
882 | shl eax, 8 |
||
883 | mov eax, [SLOT_BASE+eax+APPDATA.dir_table] |
||
884 | and eax, 0xFFFFF000 |
||
885 | |||
886 | stdcall map_page, [proc_mem_pdir], eax, PG_UW |
||
887 | mov ebx, [ofs] |
||
888 | shr ebx, 22 |
||
889 | mov esi, [proc_mem_pdir] |
||
890 | mov edi, [proc_mem_tab] |
||
891 | mov eax, [esi+ebx*4] |
||
892 | and eax, 0xFFFFF000 |
||
893 | test eax, eax |
||
894 | jz .exit |
||
895 | stdcall map_page, edi, eax, PG_UW |
||
896 | |||
897 | @@: |
||
898 | mov edi, [lin_addr] |
||
899 | and edi, 0xFFFFF000 |
||
900 | mov ecx, [buf_size] |
||
901 | add ecx, 4095 |
||
902 | shr ecx, 12 |
||
903 | inc ecx |
||
904 | |||
905 | mov edx, [ofs] |
||
906 | shr edx, 12 |
||
907 | and edx, 0x3FF |
||
908 | mov esi, [proc_mem_tab] |
||
909 | |||
910 | .map: |
||
911 | stdcall safe_map_page, [slot], [req_access], [ofs] |
||
912 | jnc .exit |
||
913 | add dword [ebp-4], 0x1000 |
||
914 | add edi, 0x1000 |
||
915 | add [ofs], 0x1000 |
||
916 | inc edx |
||
917 | dec ecx |
||
918 | jnz .map |
||
919 | .exit: |
||
920 | pop eax |
||
921 | ret |
||
922 | endp |
||
923 | |||
924 | ; in: esi+edx*4 = pointer to page table entry |
||
925 | ; in: [slot], [req_access], [ofs] on the stack |
||
926 | ; in: edi = linear address to map |
||
927 | ; out: CF cleared <=> failed |
||
928 | ; destroys: only eax |
||
929 | proc safe_map_page stdcall, slot:dword, req_access:dword, ofs:dword |
||
930 | mov eax, [esi+edx*4] |
||
931 | test al, PG_MAP |
||
932 | jz .not_present |
||
933 | test al, PG_WRITE |
||
934 | jz .resolve_readonly |
||
935 | ; normal case: writable page, just map with requested access |
||
936 | .map: |
||
937 | stdcall map_page, edi, eax, [req_access] |
||
938 | stc |
||
939 | .fail: |
||
940 | ret |
||
941 | .not_present: |
||
942 | ; check for alloc-on-demand page |
||
943 | test al, 2 |
||
944 | jz .fail |
||
945 | ; allocate new page, save it to source page table |
||
946 | push ecx |
||
947 | call alloc_page |
||
948 | pop ecx |
||
949 | test eax, eax |
||
950 | jz .fail |
||
951 | or al, PG_UW |
||
952 | mov [esi+edx*4], eax |
||
953 | jmp .map |
||
954 | .resolve_readonly: |
||
955 | ; readonly page, probably copy-on-write |
||
956 | ; check: readonly request of readonly page is ok |
||
957 | test [req_access], PG_WRITE |
||
958 | jz .map |
||
959 | ; find control structure for this page |
||
960 | pushf |
||
961 | cli |
||
962 | cld |
||
963 | push ebx ecx |
||
964 | mov eax, [slot] |
||
965 | shl eax, 8 |
||
966 | mov eax, [SLOT_BASE+eax+APPDATA.dlls_list_ptr] |
||
967 | test eax, eax |
||
968 | jz .no_hdll |
||
969 | mov ecx, [eax+HDLL.fd] |
||
970 | .scan_hdll: |
||
971 | cmp ecx, eax |
||
972 | jz .no_hdll |
||
973 | mov ebx, [ofs] |
||
974 | and ebx, not 0xFFF |
||
975 | sub ebx, [ecx+HDLL.base] |
||
976 | cmp ebx, [ecx+HDLL.size] |
||
977 | jb .hdll_found |
||
978 | mov ecx, [ecx+HDLL.fd] |
||
979 | jmp .scan_hdll |
||
980 | .no_hdll: |
||
981 | pop ecx ebx |
||
982 | popf |
||
983 | clc |
||
984 | ret |
||
985 | .hdll_found: |
||
986 | ; allocate page, save it in page table, map it, copy contents from base |
||
987 | mov eax, [ecx+HDLL.parent] |
||
988 | add ebx, [eax+DLLDESCR.data] |
||
989 | call alloc_page |
||
990 | test eax, eax |
||
991 | jz .no_hdll |
||
992 | or al, PG_UW |
||
993 | mov [esi+edx*4], eax |
||
994 | stdcall map_page, edi, eax, [req_access] |
||
995 | push esi edi |
||
996 | mov esi, ebx |
||
997 | mov ecx, 4096/4 |
||
998 | rep movsd |
||
999 | pop edi esi |
||
1000 | pop ecx ebx |
||
1001 | popf |
||
1002 | stc |
||
1003 | ret |
||
1004 | endp |
||
1005 | |||
1006 | sys_IPC: |
||
1007 | ;input: |
||
1008 | ; ebx=1 - set ipc buffer area |
||
1009 | ; ecx=address of buffer |
||
1010 | ; edx=size of buffer |
||
1011 | ; eax=2 - send message |
||
1012 | ; ebx=PID |
||
1013 | ; ecx=address of message |
||
1014 | ; edx=size of message |
||
1015 | |||
1016 | dec ebx |
||
1017 | jnz @f |
||
1018 | |||
1019 | mov eax, [current_slot] |
||
1020 | pushf |
||
1021 | cli |
||
1022 | mov [eax+APPDATA.ipc_start], ecx ;set fields in extended information area |
||
1023 | mov [eax+APPDATA.ipc_size], edx |
||
1024 | |||
1025 | add edx, ecx |
||
1026 | add edx, 4095 |
||
1027 | and edx, not 4095 |
||
1028 | |||
1029 | .touch: |
||
1030 | mov eax, [ecx] |
||
1031 | add ecx, 0x1000 |
||
1032 | cmp ecx, edx |
||
1033 | jb .touch |
||
1034 | |||
1035 | popf |
||
1036 | mov [esp+32], ebx ;ebx=0 |
||
1037 | ret |
||
1038 | |||
1039 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
||
1040 | ;2 |
||
1041 | @@: |
||
1042 | dec ebx |
||
1043 | jnz @f |
||
1044 | |||
1045 | stdcall sys_ipc_send, ecx, edx, esi |
||
1046 | mov [esp+32], eax |
||
1047 | ret |
||
1048 | @@: |
||
1049 | or eax, -1 |
||
1050 | mov [esp+32], eax |
||
1051 | ret |
||
1052 | |||
1053 | ;align 4 |
||
1054 | ;proc set_ipc_buff |
||
1055 | |||
1056 | ; mov eax,[current_slot] |
||
1057 | ; pushf |
||
1058 | ; cli |
||
1059 | ; mov [eax+APPDATA.ipc_start],ebx ;set fields in extended information area |
||
1060 | ; mov [eax+APPDATA.ipc_size],ecx |
||
1061 | ; |
||
1062 | ; add ecx, ebx |
||
1063 | ; add ecx, 4095 |
||
1064 | ; and ecx, not 4095 |
||
1065 | ; |
||
1066 | ;.touch: mov eax, [ebx] |
||
1067 | ; add ebx, 0x1000 |
||
1068 | ; cmp ebx, ecx |
||
1069 | ; jb .touch |
||
1070 | ; |
||
1071 | ; popf |
||
1072 | ; xor eax, eax |
||
1073 | ; ret |
||
1074 | ;endp |
||
1075 | |||
1076 | proc sys_ipc_send stdcall, PID:dword, msg_addr:dword, msg_size:dword |
||
1077 | locals |
||
1078 | dst_slot dd ? |
||
1079 | dst_offset dd ? |
||
1080 | buf_size dd ? |
||
1081 | used_buf dd ? |
||
1082 | endl |
||
1083 | |||
1084 | pushf |
||
1085 | cli |
||
1086 | |||
1087 | mov eax, [PID] |
||
1088 | call pid_to_slot |
||
1089 | test eax, eax |
||
1090 | jz .no_pid |
||
1091 | |||
1092 | mov [dst_slot], eax |
||
1093 | shl eax, 8 |
||
1094 | mov edi, [eax+SLOT_BASE+0xa0] ;is ipc area defined? |
||
1095 | test edi, edi |
||
1096 | jz .no_ipc_area |
||
1097 | |||
1098 | mov ebx, edi |
||
1099 | and ebx, 0xFFF |
||
1100 | mov [dst_offset], ebx |
||
1101 | |||
1102 | mov esi, [eax+SLOT_BASE+0xa4] |
||
1103 | mov [buf_size], esi |
||
1104 | |||
1105 | mov ecx, [ipc_tmp] |
||
1106 | cmp esi, 0x40000-0x1000; size of [ipc_tmp] minus one page |
||
1107 | jbe @f |
||
1108 | push esi edi |
||
1109 | add esi, 0x1000 |
||
1110 | stdcall alloc_kernel_space, esi |
||
1111 | mov ecx, eax |
||
1112 | pop edi esi |
||
1113 | @@: |
||
1114 | mov [used_buf], ecx |
||
1115 | stdcall map_mem, ecx, [dst_slot], \ |
||
1116 | edi, esi, PG_SW |
||
1117 | |||
1118 | mov edi, [dst_offset] |
||
1119 | add edi, [used_buf] |
||
1120 | cmp dword [edi], 0 |
||
1121 | jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now |
||
1122 | |||
1123 | mov edx, dword [edi+4] |
||
1124 | lea ebx, [edx+8] |
||
1125 | add ebx, [msg_size] |
||
1126 | cmp ebx, [buf_size] |
||
1127 | ja .buffer_overflow ;esi<0 - not enough memory in buffer |
||
1128 | |||
1129 | mov dword [edi+4], ebx |
||
1130 | mov eax, [TASK_BASE] |
||
1131 | mov eax, [eax+0x04] ;eax - our PID |
||
1132 | add edi, edx |
||
1133 | mov [edi], eax |
||
1134 | mov ecx, [msg_size] |
||
1135 | |||
1136 | mov [edi+4], ecx |
||
1137 | add edi, 8 |
||
1138 | mov esi, [msg_addr] |
||
1139 | ; add esi, new_app_base |
||
1140 | cld |
||
1141 | rep movsb |
||
1142 | |||
1143 | mov ebx, [ipc_tmp] |
||
1144 | mov edx, ebx |
||
1145 | shr ebx, 12 |
||
1146 | xor eax, eax |
||
1147 | mov [page_tabs+ebx*4], eax |
||
1148 | invlpg [edx] |
||
1149 | |||
1150 | mov ebx, [ipc_pdir] |
||
1151 | mov edx, ebx |
||
1152 | shr ebx, 12 |
||
1153 | xor eax, eax |
||
1154 | mov [page_tabs+ebx*4], eax |
||
1155 | invlpg [edx] |
||
1156 | |||
1157 | mov ebx, [ipc_ptab] |
||
1158 | mov edx, ebx |
||
1159 | shr ebx, 12 |
||
1160 | xor eax, eax |
||
1161 | mov [page_tabs+ebx*4], eax |
||
1162 | invlpg [edx] |
||
1163 | |||
1164 | mov eax, [dst_slot] |
||
1165 | shl eax, 8 |
||
1166 | or [eax+SLOT_BASE+0xA8], dword 0x40 |
||
1167 | push 0 |
||
1168 | jmp .ret |
||
1169 | .no_pid: |
||
1170 | popf |
||
1171 | mov eax, 4 |
||
1172 | ret |
||
1173 | .no_ipc_area: |
||
1174 | popf |
||
1175 | xor eax, eax |
||
1176 | inc eax |
||
1177 | ret |
||
1178 | .ipc_blocked: |
||
1179 | push 2 |
||
1180 | jmp .ret |
||
1181 | .buffer_overflow: |
||
1182 | push 3 |
||
1183 | .ret: |
||
1184 | mov eax, [used_buf] |
||
1185 | cmp eax, [ipc_tmp] |
||
1186 | jz @f |
||
1187 | stdcall free_kernel_space, eax |
||
1188 | @@: |
||
1189 | pop eax |
||
1190 | popf |
||
1191 | ret |
||
1192 | endp |
||
1193 | |||
1194 | align 4 |
||
1195 | sysfn_meminfo: |
||
1196 | |||
1197 | ; add ecx, new_app_base |
||
1198 | cmp ecx, OS_BASE |
||
1199 | jae .fail |
||
1200 | |||
1201 | mov eax, [pg_data.pages_count] |
||
1202 | mov [ecx], eax |
||
1203 | shl eax, 12 |
||
1204 | mov [esp+32], eax |
||
1205 | mov eax, [pg_data.pages_free] |
||
1206 | mov [ecx+4], eax |
||
1207 | mov eax, [pg_data.pages_faults] |
||
1208 | mov [ecx+8], eax |
||
1209 | mov eax, [heap_size] |
||
1210 | mov [ecx+12], eax |
||
1211 | mov eax, [heap_free] |
||
1212 | mov [ecx+16], eax |
||
1213 | mov eax, [heap_blocks] |
||
1214 | mov [ecx+20], eax |
||
1215 | mov eax, [free_blocks] |
||
1216 | mov [ecx+24], eax |
||
1217 | ret |
||
1218 | .fail: |
||
1219 | or dword [esp+32], -1 |
||
1220 | ret |
||
1221 | |||
1222 | align 4 |
||
1223 | f68: |
||
1224 | cmp ebx, 4 |
||
1225 | jbe sys_sheduler |
||
1226 | |||
1227 | cmp ebx, 11 |
||
1228 | jb .fail |
||
1229 | |||
3786 | Serge | 1230 | cmp ebx, 27 |
2288 | clevermous | 1231 | ja .fail |
1232 | |||
1233 | jmp dword [f68call+ebx*4-11*4] |
||
1234 | .11: |
||
1235 | call init_heap |
||
1236 | mov [esp+32], eax |
||
1237 | ret |
||
1238 | .12: |
||
1239 | stdcall user_alloc, ecx |
||
1240 | mov [esp+32], eax |
||
1241 | ret |
||
1242 | .13: |
||
1243 | stdcall user_free, ecx |
||
1244 | mov [esp+32], eax |
||
1245 | ret |
||
1246 | .14: |
||
1247 | cmp ecx, OS_BASE |
||
1248 | jae .fail |
||
1249 | mov edi, ecx |
||
1250 | call get_event_ex |
||
1251 | mov [esp+32], eax |
||
1252 | ret |
||
1253 | .16: |
||
1254 | test ecx, ecx |
||
1255 | jz .fail |
||
1256 | cmp ecx, OS_BASE |
||
1257 | jae .fail |
||
1258 | stdcall get_service, ecx |
||
1259 | mov [esp+32], eax |
||
1260 | ret |
||
1261 | .17: |
||
1262 | call srv_handlerEx ;ecx |
||
1263 | mov [esp+32], eax |
||
1264 | ret |
||
1265 | .19: |
||
1266 | cmp ecx, OS_BASE |
||
1267 | jae .fail |
||
1268 | stdcall load_library, ecx |
||
1269 | mov [esp+32], eax |
||
1270 | ret |
||
1271 | .20: |
||
1272 | mov eax, edx |
||
1273 | mov ebx, ecx |
||
1274 | call user_realloc ;in: eax = pointer, ebx = new size |
||
1275 | mov [esp+32], eax |
||
1276 | ret |
||
1277 | .21: |
||
1278 | cmp ecx, OS_BASE |
||
1279 | jae .fail |
||
1280 | |||
2647 | mario79 | 1281 | cmp edx, OS_BASE |
2288 | clevermous | 1282 | jae .fail |
1283 | |||
4418 | clevermous | 1284 | stdcall load_pe_driver, ecx, edx |
2288 | clevermous | 1285 | mov [esp+32], eax |
1286 | ret |
||
1287 | .22: |
||
1288 | cmp ecx, OS_BASE |
||
1289 | jae .fail |
||
1290 | |||
1291 | stdcall shmem_open, ecx, edx, esi |
||
1292 | mov [esp+24], edx |
||
1293 | mov [esp+32], eax |
||
1294 | ret |
||
1295 | |||
1296 | .23: |
||
1297 | cmp ecx, OS_BASE |
||
1298 | jae .fail |
||
1299 | |||
1300 | stdcall shmem_close, ecx |
||
1301 | mov [esp+32], eax |
||
1302 | ret |
||
1303 | .24: |
||
1304 | mov eax, [current_slot] |
||
1305 | xchg ecx, [eax+APPDATA.exc_handler] |
||
1306 | xchg edx, [eax+APPDATA.except_mask] |
||
1307 | mov [esp+32], ecx ; reg_eax+8 |
||
1308 | mov [esp+20], edx ; reg_ebx+8 |
||
1309 | ret |
||
1310 | .25: |
||
1311 | cmp ecx, 32 |
||
1312 | jae .fail |
||
1313 | mov eax, [current_slot] |
||
1314 | btr [eax+APPDATA.except_mask], ecx |
||
1315 | setc byte[esp+32] |
||
1316 | jecxz @f |
||
1317 | bts [eax+APPDATA.except_mask], ecx |
||
1318 | @@: |
||
1319 | ret |
||
1320 | |||
2400 | Serge | 1321 | .26: |
1322 | stdcall user_unmap, ecx, edx, esi |
||
1323 | mov [esp+32], eax |
||
1324 | ret |
||
1325 | |||
3786 | Serge | 1326 | .27: |
1327 | cmp ecx, OS_BASE |
||
1328 | jae .fail |
||
1329 | |||
1330 | stdcall load_file_umode, ecx |
||
1331 | mov [esp+24], edx |
||
1332 | mov [esp+32], eax |
||
1333 | ret |
||
1334 | |||
2288 | clevermous | 1335 | .fail: |
1336 | xor eax, eax |
||
1337 | mov [esp+32], eax |
||
1338 | ret |
||
1339 | |||
1340 | |||
1341 | align 4 |
||
1342 | f68call: ; keep this table closer to main code |
||
1343 | |||
1344 | dd f68.11 ; init_heap |
||
1345 | dd f68.12 ; user_alloc |
||
1346 | dd f68.13 ; user_free |
||
1347 | dd f68.14 ; get_event_ex |
||
1348 | dd f68.fail ; moved to f68.24 |
||
1349 | dd f68.16 ; get_service |
||
1350 | dd f68.17 ; call_service |
||
1351 | dd f68.fail ; moved to f68.25 |
||
1352 | dd f68.19 ; load_dll |
||
1353 | dd f68.20 ; user_realloc |
||
1354 | dd f68.21 ; load_driver |
||
1355 | dd f68.22 ; shmem_open |
||
1356 | dd f68.23 ; shmem_close |
||
2400 | Serge | 1357 | dd f68.24 ; set exception handler |
1358 | dd f68.25 ; unmask exception |
||
1359 | dd f68.26 ; user_unmap |
||
3786 | Serge | 1360 | dd f68.27 ; load_file_umode |
2288 | clevermous | 1361 | |
1362 | |||
1363 | align 4 |
||
4418 | clevermous | 1364 | proc load_pe_driver stdcall, file:dword, cmdline:dword |
1365 | push esi |
||
2288 | clevermous | 1366 | |
1367 | stdcall load_PE, [file] |
||
1368 | test eax, eax |
||
1369 | jz .fail |
||
1370 | |||
1371 | mov esi, eax |
||
4418 | clevermous | 1372 | push [cmdline] |
1373 | push DRV_ENTRY |
||
1374 | call eax |
||
1375 | pop ecx |
||
1376 | pop ecx |
||
2288 | clevermous | 1377 | test eax, eax |
1378 | jz .fail |
||
1379 | |||
1380 | mov [eax+SRV.entry], esi |
||
4418 | clevermous | 1381 | pop esi |
2288 | clevermous | 1382 | ret |
1383 | |||
1384 | .fail: |
||
1385 | xor eax, eax |
||
4418 | clevermous | 1386 | pop esi |
2288 | clevermous | 1387 | ret |
1388 | endp |
||
1389 | |||
1390 | align 4 |
||
1391 | proc create_ring_buffer stdcall, size:dword, flags:dword |
||
1392 | locals |
||
1393 | buf_ptr dd ? |
||
1394 | endl |
||
1395 | |||
1396 | mov eax, [size] |
||
1397 | test eax, eax |
||
1398 | jz .fail |
||
1399 | |||
1400 | add eax, eax |
||
1401 | stdcall alloc_kernel_space, eax |
||
1402 | test eax, eax |
||
1403 | jz .fail |
||
1404 | |||
1405 | push ebx |
||
1406 | |||
1407 | mov [buf_ptr], eax |
||
1408 | |||
1409 | mov ebx, [size] |
||
1410 | shr ebx, 12 |
||
1411 | push ebx |
||
1412 | |||
1413 | stdcall alloc_pages, ebx |
||
1414 | pop ecx |
||
1415 | |||
1416 | test eax, eax |
||
1417 | jz .mm_fail |
||
1418 | |||
1419 | push edi |
||
1420 | |||
1421 | or eax, [flags] |
||
1422 | mov edi, [buf_ptr] |
||
1423 | mov ebx, [buf_ptr] |
||
1424 | mov edx, ecx |
||
1425 | shl edx, 2 |
||
1426 | shr edi, 10 |
||
1427 | @@: |
||
1428 | mov [page_tabs+edi], eax |
||
1429 | mov [page_tabs+edi+edx], eax |
||
1430 | invlpg [ebx] |
||
1431 | invlpg [ebx+0x10000] |
||
1432 | add eax, 0x1000 |
||
1433 | add ebx, 0x1000 |
||
1434 | add edi, 4 |
||
1435 | dec ecx |
||
1436 | jnz @B |
||
1437 | |||
1438 | mov eax, [buf_ptr] |
||
1439 | pop edi |
||
1440 | pop ebx |
||
1441 | ret |
||
1442 | .mm_fail: |
||
1443 | stdcall free_kernel_space, [buf_ptr] |
||
1444 | xor eax, eax |
||
1445 | pop ebx |
||
1446 | .fail: |
||
1447 | ret |
||
1448 | endp |
||
2466 | Serge | 1449 | |
1450 | |||
1451 | align 4 |
||
1452 | proc print_mem |
||
1453 | mov edi, BOOT_VAR + 0x9104 |
||
1454 | mov ecx, [edi-4] |
||
1455 | test ecx, ecx |
||
1456 | jz .done |
||
1457 | |||
1458 | @@: |
||
1459 | mov eax, [edi] |
||
1460 | mov edx, [edi+4] |
||
1461 | add eax, [edi+8] |
||
1462 | adc edx, [edi+12] |
||
1463 | |||
1464 | DEBUGF 1, "K : E820 %x%x - %x%x type %d\n", \ |
||
1465 | [edi+4], [edi],\ |
||
1466 | edx, eax, [edi+16] |
||
1467 | add edi, 20 |
||
1468 | dec ecx |
||
1469 | jnz @b |
||
1470 | .done: |
||
1471 | ret |
||
1472 | endp0>>=> |