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Rev | Author | Line No. | Line |
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2288 | clevermous | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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5363 | yogev_ezra | 3 | ;; Copyright (C) KolibriOS team 2004-2015. 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: 6263 $ |
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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 |
5357 | serge | 129 | mov eax, [esp+12] ; phis_addr |
4424 | Serge | 130 | or eax, [esp+16] ; flags |
5357 | serge | 131 | and eax, [pte_valid_mask] |
4424 | Serge | 132 | mov ebx, [esp+8] ; lin_addr |
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 | or edx, [flags] |
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5357 | serge | 195 | and edx, [pte_valid_mask] |
2288 | clevermous | 196 | @@: |
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 | |||
5357 | serge | 232 | and eax, [pte_valid_mask ] |
2288 | clevermous | 233 | mov edi, ebx |
234 | shr edi, 12 |
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235 | lea edi, [page_tabs+edi*4] |
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236 | @@: |
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237 | stosd |
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238 | invlpg [ebx] |
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239 | add eax, 0x1000 |
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240 | add ebx, 0x1000 |
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241 | loop @B |
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242 | |||
243 | pop edi |
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244 | |||
245 | mov ecx, pg_data.mutex |
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246 | call mutex_unlock |
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247 | .fail: |
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248 | ret |
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249 | |||
250 | |||
251 | ; param |
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252 | ; eax= base |
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253 | ; ecx= count |
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254 | |||
255 | align 4 |
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256 | release_pages: |
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257 | |||
258 | push ebp |
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259 | push esi |
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260 | push edi |
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261 | push ebx |
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262 | |||
263 | mov esi, eax |
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264 | mov edi, eax |
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265 | |||
266 | shr esi, 12 |
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267 | lea esi, [page_tabs+esi*4] |
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268 | |||
269 | push ecx |
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270 | mov ecx, pg_data.mutex |
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271 | call mutex_lock |
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272 | pop ecx |
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273 | |||
274 | mov ebp, [pg_data.pages_free] |
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275 | mov ebx, [page_start] |
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276 | mov edx, sys_pgmap |
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277 | @@: |
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278 | xor eax, eax |
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279 | xchg eax, [esi] |
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280 | invlpg [edi] |
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281 | |||
282 | test eax, 1 |
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283 | jz .next |
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284 | |||
285 | shr eax, 12 |
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286 | bts [edx], eax |
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287 | cmc |
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288 | adc ebp, 0 |
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289 | shr eax, 3 |
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290 | and eax, -4 |
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291 | add eax, edx |
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292 | cmp eax, ebx |
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293 | jae .next |
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294 | |||
295 | mov ebx, eax |
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296 | .next: |
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297 | add edi, 0x1000 |
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298 | add esi, 4 |
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299 | loop @B |
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300 | |||
301 | mov [pg_data.pages_free], ebp |
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302 | mov ecx, pg_data.mutex |
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303 | call mutex_unlock |
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304 | |||
305 | pop ebx |
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306 | pop edi |
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307 | pop esi |
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308 | pop ebp |
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309 | ret |
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310 | |||
311 | ; param |
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312 | ; eax= base |
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313 | ; ecx= count |
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314 | |||
315 | align 4 |
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316 | unmap_pages: |
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317 | |||
318 | push edi |
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319 | |||
320 | mov edi, eax |
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321 | mov edx, eax |
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322 | |||
323 | shr edi, 10 |
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324 | add edi, page_tabs |
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325 | |||
326 | xor eax, eax |
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327 | @@: |
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328 | stosd |
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329 | invlpg [edx] |
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330 | add edx, 0x1000 |
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331 | loop @b |
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332 | |||
333 | pop edi |
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334 | ret |
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335 | |||
336 | |||
337 | align 4 |
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338 | proc map_page_table stdcall, lin_addr:dword, phis_addr:dword |
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339 | push ebx |
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340 | mov ebx, [lin_addr] |
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341 | shr ebx, 22 |
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342 | mov eax, [phis_addr] |
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343 | and eax, not 0xFFF |
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5365 | serge | 344 | or eax, PG_UWR |
2288 | clevermous | 345 | mov dword [master_tab+ebx*4], eax |
346 | mov eax, [lin_addr] |
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347 | shr eax, 10 |
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348 | add eax, page_tabs |
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349 | invlpg [eax] |
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350 | pop ebx |
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351 | ret |
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352 | endp |
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353 | |||
5057 | clevermous | 354 | uglobal |
355 | sb16_buffer_allocated db 0 |
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356 | endg |
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357 | |||
358 | ; Allocates [.size] bytes so that the target memory block |
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359 | ; is inside one 64K page for 24-bit DMA controller, |
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360 | ; that is, somewhere between 00xx0000h and 00xxFFFFh. |
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361 | proc alloc_dma24 |
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362 | ; Implementation note. |
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363 | ; The only user of that function is SB16 driver, |
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364 | ; so just return a statically allocated buffer. |
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365 | virtual at esp |
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366 | dd ? ; return address |
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367 | .size dd ? |
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368 | end virtual |
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369 | cmp [sb16_buffer_allocated], 0 |
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370 | jnz .fail |
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371 | inc [sb16_buffer_allocated] |
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372 | mov eax, SB16Buffer |
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373 | ret 4 |
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374 | .fail: |
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375 | xor eax, eax |
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376 | ret 4 |
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377 | endp |
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378 | |||
5032 | clevermous | 379 | ; Allocates a physical page for master page table |
380 | ; that duplicates first Mb of OS_BASE at address 0; |
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381 | ; used for starting APs and for shutting down, |
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382 | ; where it is important to execute code in trivial-mapped pages. |
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383 | ; Returns eax = allocated physical page. |
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384 | proc create_trampoline_pgmap |
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385 | ; The only non-trivial moment: |
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386 | ; we need a linear address to fill information, |
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387 | ; but we don't need it outside of this function, |
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388 | ; so we're returning physical address. |
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389 | ; Therefore, allocate memory with kernel_alloc, |
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390 | ; this will allocate physical page and a linear address somewhere, |
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391 | ; and deallocate only linear address with free_kernel_space. |
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392 | stdcall kernel_alloc, 0x1000 |
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393 | mov edi, eax |
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394 | mov esi, master_tab |
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395 | mov ecx, 1024 |
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396 | rep movsd |
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397 | mov ecx, [master_tab+(OS_BASE shr 20)] |
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398 | mov [eax], ecx |
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399 | mov edi, eax |
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400 | call get_pg_addr |
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401 | push eax |
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402 | stdcall free_kernel_space, edi |
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403 | pop eax |
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404 | ret |
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405 | endp |
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406 | |||
2288 | clevermous | 407 | align 4 |
408 | proc new_mem_resize stdcall, new_size:dword |
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409 | |||
2594 | Serge | 410 | push ebx |
411 | push esi |
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412 | push edi |
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2288 | clevermous | 413 | |
2594 | Serge | 414 | mov edx, [current_slot] |
5130 | serge | 415 | mov ebx, [edx+APPDATA.process] |
416 | |||
417 | cmp [ebx+PROC.heap_base], 0 |
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2594 | Serge | 418 | jne .exit |
419 | |||
2288 | clevermous | 420 | mov edi, [new_size] |
421 | add edi, 4095 |
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422 | and edi, not 4095 |
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423 | mov [new_size], edi |
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424 | |||
5130 | serge | 425 | mov esi, [ebx+PROC.mem_used] |
2288 | clevermous | 426 | add esi, 4095 |
427 | and esi, not 4095 |
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428 | |||
429 | cmp edi, esi |
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2594 | Serge | 430 | ja .expand |
431 | je .exit |
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2288 | clevermous | 432 | |
2594 | Serge | 433 | mov ebx, edi |
2288 | clevermous | 434 | shr edi, 12 |
435 | shr esi, 12 |
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2594 | Serge | 436 | |
437 | mov ecx, pg_data.mutex |
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438 | call mutex_lock |
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2288 | clevermous | 439 | @@: |
440 | mov eax, [app_page_tabs+edi*4] |
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441 | test eax, 1 |
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442 | jz .next |
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2594 | Serge | 443 | |
444 | mov dword [app_page_tabs+edi*4], 0 |
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2288 | clevermous | 445 | invlpg [ebx] |
446 | call free_page |
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447 | |||
448 | .next: |
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2594 | Serge | 449 | inc edi |
2595 | Serge | 450 | add ebx, 0x1000 |
2288 | clevermous | 451 | cmp edi, esi |
452 | jb @B |
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453 | |||
2594 | Serge | 454 | mov ecx, pg_data.mutex |
455 | call mutex_unlock |
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456 | |||
2288 | clevermous | 457 | .update_size: |
2594 | Serge | 458 | mov edx, [current_slot] |
2288 | clevermous | 459 | mov ebx, [new_size] |
5130 | serge | 460 | mov edx, [edx+APPDATA.process] |
461 | mov [edx+PROC.mem_used], ebx |
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2594 | Serge | 462 | .exit: |
463 | pop edi |
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464 | pop esi |
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465 | pop ebx |
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2288 | clevermous | 466 | xor eax, eax |
467 | ret |
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2594 | Serge | 468 | |
2288 | clevermous | 469 | .expand: |
470 | |||
2594 | Serge | 471 | mov ecx, pg_data.mutex |
472 | call mutex_lock |
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2288 | clevermous | 473 | |
2594 | Serge | 474 | xchg esi, edi |
475 | |||
476 | push esi ;new size |
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477 | push edi ;old size |
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478 | |||
2288 | clevermous | 479 | add edi, 0x3FFFFF |
480 | and edi, not(0x3FFFFF) |
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481 | add esi, 0x3FFFFF |
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482 | and esi, not(0x3FFFFF) |
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483 | |||
2594 | Serge | 484 | cmp edi, esi |
2288 | clevermous | 485 | jae .grow |
2594 | Serge | 486 | @@: |
2288 | clevermous | 487 | call alloc_page |
488 | test eax, eax |
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2594 | Serge | 489 | jz .exit_fail |
2288 | clevermous | 490 | |
491 | stdcall map_page_table, edi, eax |
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492 | |||
493 | push edi |
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494 | shr edi, 10 |
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495 | add edi, page_tabs |
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496 | mov ecx, 1024 |
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497 | xor eax, eax |
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498 | cld |
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499 | rep stosd |
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500 | pop edi |
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501 | |||
502 | add edi, 0x00400000 |
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503 | cmp edi, esi |
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504 | jb @B |
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505 | .grow: |
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2594 | Serge | 506 | pop edi ;old size |
507 | pop ecx ;new size |
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2288 | clevermous | 508 | |
2594 | Serge | 509 | shr edi, 10 |
510 | shr ecx, 10 |
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511 | sub ecx, edi |
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512 | shr ecx, 2 ;pages count |
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513 | mov eax, 2 |
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514 | |||
515 | add edi, app_page_tabs |
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2288 | clevermous | 516 | rep stosd |
517 | |||
2594 | Serge | 518 | mov ecx, pg_data.mutex |
519 | call mutex_unlock |
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2288 | clevermous | 520 | |
521 | jmp .update_size |
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2594 | Serge | 522 | |
523 | .exit_fail: |
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2288 | clevermous | 524 | mov ecx, pg_data.mutex |
525 | call mutex_unlock |
||
526 | |||
2594 | Serge | 527 | add esp, 8 |
528 | pop edi |
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529 | pop esi |
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530 | pop ebx |
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2288 | clevermous | 531 | xor eax, eax |
532 | inc eax |
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533 | ret |
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534 | endp |
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535 | |||
2594 | Serge | 536 | |
2288 | clevermous | 537 | ; param |
538 | ; eax= linear address |
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539 | ; |
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540 | ; retval |
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541 | ; eax= phisical page address |
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542 | |||
543 | align 4 |
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544 | get_pg_addr: |
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3166 | clevermous | 545 | sub eax, OS_BASE |
546 | cmp eax, 0x400000 |
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547 | jb @f |
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2288 | clevermous | 548 | shr eax, 12 |
3166 | clevermous | 549 | mov eax, [page_tabs+(eax+(OS_BASE shr 12))*4] |
550 | @@: |
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2288 | clevermous | 551 | and eax, 0xFFFFF000 |
552 | ret |
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553 | |||
554 | |||
555 | align 4 |
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556 | ; Now it is called from core/sys32::exc_c (see stack frame there) |
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557 | proc page_fault_handler |
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558 | |||
559 | .err_addr equ ebp-4 |
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560 | |||
561 | push ebx ;save exception number (#PF) |
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562 | mov ebp, esp |
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563 | mov ebx, cr2 |
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564 | push ebx ;that is locals: .err_addr = cr2 |
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565 | inc [pg_data.pages_faults] |
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566 | |||
567 | mov eax, [pf_err_code] |
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568 | |||
569 | cmp ebx, OS_BASE ;ebx == .err_addr |
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3539 | clevermous | 570 | jb .user_space ;страница в памяти приложения ; |
2288 | clevermous | 571 | |
572 | cmp ebx, page_tabs |
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3539 | clevermous | 573 | jb .kernel_space ;страница в памяти ядра |
2288 | clevermous | 574 | |
575 | cmp ebx, kernel_tabs |
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3539 | clevermous | 576 | jb .alloc;.app_tabs ;таблицы страниц приложения ; |
577 | ;просто создадим одну |
||
578 | if 0 ;пока это просто лишнее |
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2288 | clevermous | 579 | cmp ebx, LFB_BASE |
3539 | clevermous | 580 | jb .core_tabs ;таблицы страниц ядра |
581 | ;Ошибка |
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2288 | clevermous | 582 | .lfb: |
3539 | clevermous | 583 | ;область LFB |
584 | ;Ошибка |
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2288 | clevermous | 585 | jmp .fail |
586 | end if |
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587 | .core_tabs: |
||
588 | .fail: ;simply return to caller |
||
589 | mov esp, ebp |
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590 | pop ebx ;restore exception number (#PF) |
||
591 | ret |
||
592 | |||
593 | .user_space: |
||
5356 | serge | 594 | test eax, PG_READ |
3539 | clevermous | 595 | jnz .err_access ;Страница присутствует |
596 | ;Ошибка доступа ? |
||
2288 | clevermous | 597 | |
598 | shr ebx, 12 |
||
599 | mov ecx, ebx |
||
600 | shr ecx, 10 |
||
601 | mov edx, [master_tab+ecx*4] |
||
5356 | serge | 602 | test edx, PG_READ |
3539 | clevermous | 603 | jz .fail ;таблица страниц не создана |
604 | ;неверный адрес в программе |
||
2288 | clevermous | 605 | |
606 | mov eax, [page_tabs+ebx*4] |
||
607 | test eax, 2 |
||
3539 | clevermous | 608 | jz .fail ;адрес не зарезервирован для ; |
609 | ;использования. Ошибка |
||
2288 | clevermous | 610 | .alloc: |
611 | call alloc_page |
||
612 | test eax, eax |
||
613 | jz .fail |
||
614 | |||
5356 | serge | 615 | stdcall map_page, [.err_addr], eax, PG_UWR |
2288 | clevermous | 616 | |
617 | mov edi, [.err_addr] |
||
618 | and edi, 0xFFFFF000 |
||
619 | mov ecx, 1024 |
||
620 | xor eax, eax |
||
621 | ;cld ;caller is duty for this |
||
622 | rep stosd |
||
623 | .exit: ;iret with repeat fault instruction |
||
624 | add esp, 12;clear in stack: locals(.err_addr) + #PF + ret_to_caller |
||
625 | restore_ring3_context |
||
626 | iretd |
||
627 | |||
628 | .err_access: |
||
629 | ; access denied? this may be a result of copy-on-write protection for DLL |
||
630 | ; check list of HDLLs |
||
631 | and ebx, not 0xFFF |
||
5130 | serge | 632 | mov eax, [current_process] |
633 | mov eax, [eax+PROC.dlls_list_ptr] |
||
2288 | clevermous | 634 | test eax, eax |
635 | jz .fail |
||
636 | mov esi, [eax+HDLL.fd] |
||
637 | .scan_hdll: |
||
638 | cmp esi, eax |
||
639 | jz .fail |
||
640 | mov edx, ebx |
||
641 | sub edx, [esi+HDLL.base] |
||
642 | cmp edx, [esi+HDLL.size] |
||
643 | jb .fault_in_hdll |
||
644 | .scan_hdll.next: |
||
645 | mov esi, [esi+HDLL.fd] |
||
646 | jmp .scan_hdll |
||
647 | .fault_in_hdll: |
||
648 | ; allocate new page, map it as rw and copy data |
||
649 | call alloc_page |
||
650 | test eax, eax |
||
651 | jz .fail |
||
5356 | serge | 652 | stdcall map_page, ebx, eax, PG_UWR |
2288 | clevermous | 653 | mov edi, ebx |
654 | mov ecx, 1024 |
||
655 | sub ebx, [esi+HDLL.base] |
||
656 | mov esi, [esi+HDLL.parent] |
||
657 | mov esi, [esi+DLLDESCR.data] |
||
658 | add esi, ebx |
||
659 | rep movsd |
||
660 | jmp .exit |
||
661 | |||
662 | .kernel_space: |
||
5356 | serge | 663 | test eax, PG_READ |
3539 | clevermous | 664 | jz .fail ;страница не присутствует |
2288 | clevermous | 665 | |
666 | test eax, 12 ;U/S (+below) |
||
3539 | clevermous | 667 | jnz .fail ;приложение обратилось к памяти |
668 | ;ядра |
||
2288 | clevermous | 669 | ;test eax, 8 |
3539 | clevermous | 670 | ;jnz .fail ;установлен зарезервированный бит |
671 | ;в таблицах страниц. добавлено в P4/Xeon |
||
2288 | clevermous | 672 | |
3539 | clevermous | 673 | ;попытка записи в защищённую страницу ядра |
2288 | clevermous | 674 | |
675 | cmp ebx, tss._io_map_0 |
||
676 | jb .fail |
||
677 | |||
678 | cmp ebx, tss._io_map_0+8192 |
||
679 | jae .fail |
||
680 | |||
681 | ; io permission map |
||
682 | ; copy-on-write protection |
||
683 | |||
684 | call alloc_page |
||
685 | test eax, eax |
||
686 | jz .fail |
||
687 | |||
688 | push eax |
||
5356 | serge | 689 | stdcall map_page, [.err_addr], eax, dword PG_SWR |
2288 | clevermous | 690 | pop eax |
691 | mov edi, [.err_addr] |
||
692 | and edi, -4096 |
||
693 | lea esi, [edi+(not tss._io_map_0)+1]; -tss._io_map_0 |
||
694 | |||
695 | mov ebx, esi |
||
696 | shr ebx, 12 |
||
697 | mov edx, [current_slot] |
||
5356 | serge | 698 | or eax, PG_SWR |
2288 | clevermous | 699 | mov [edx+APPDATA.io_map+ebx*4], eax |
700 | |||
701 | add esi, [default_io_map] |
||
702 | mov ecx, 4096/4 |
||
703 | ;cld ;caller is duty for this |
||
704 | rep movsd |
||
705 | jmp .exit |
||
706 | endp |
||
707 | |||
708 | ; returns number of mapped bytes |
||
5130 | serge | 709 | proc map_mem_ipc stdcall, lin_addr:dword,slot:dword,\ |
2288 | clevermous | 710 | ofs:dword,buf_size:dword,req_access:dword |
5130 | serge | 711 | locals |
712 | count dd ? |
||
713 | process dd ? |
||
714 | endl |
||
2288 | clevermous | 715 | |
5130 | serge | 716 | mov [count], 0 |
2288 | clevermous | 717 | cmp [buf_size], 0 |
718 | jz .exit |
||
719 | |||
720 | mov eax, [slot] |
||
721 | shl eax, 8 |
||
5130 | serge | 722 | mov eax, [SLOT_BASE+eax+APPDATA.process] |
723 | test eax, eax |
||
724 | jz .exit |
||
2288 | clevermous | 725 | |
5130 | serge | 726 | mov [process], eax |
2288 | clevermous | 727 | mov ebx, [ofs] |
728 | shr ebx, 22 |
||
5130 | serge | 729 | mov eax, [eax+PROC.pdt_0+ebx*4] ;get page table |
730 | mov esi, [ipc_ptab] |
||
2288 | clevermous | 731 | and eax, 0xFFFFF000 |
732 | jz .exit |
||
5356 | serge | 733 | stdcall map_page, esi, eax, PG_SWR |
2288 | clevermous | 734 | @@: |
735 | mov edi, [lin_addr] |
||
736 | and edi, 0xFFFFF000 |
||
737 | mov ecx, [buf_size] |
||
738 | add ecx, 4095 |
||
739 | shr ecx, 12 |
||
5130 | serge | 740 | inc ecx ; ??????????? |
2288 | clevermous | 741 | |
742 | mov edx, [ofs] |
||
743 | shr edx, 12 |
||
744 | and edx, 0x3FF |
||
745 | .map: |
||
746 | stdcall safe_map_page, [slot], [req_access], [ofs] |
||
747 | jnc .exit |
||
5130 | serge | 748 | add [count], PAGE_SIZE |
749 | add [ofs], PAGE_SIZE |
||
2288 | clevermous | 750 | dec ecx |
751 | jz .exit |
||
5130 | serge | 752 | |
753 | add edi, PAGE_SIZE |
||
2288 | clevermous | 754 | inc edx |
5130 | serge | 755 | cmp edx, 1024 |
2288 | clevermous | 756 | jnz .map |
5130 | serge | 757 | |
2288 | clevermous | 758 | inc ebx |
5130 | serge | 759 | mov eax, [process] |
760 | mov eax, [eax+PROC.pdt_0+ebx*4] |
||
2288 | clevermous | 761 | and eax, 0xFFFFF000 |
762 | jz .exit |
||
5130 | serge | 763 | |
5356 | serge | 764 | stdcall map_page, esi, eax, PG_SWR |
2288 | clevermous | 765 | xor edx, edx |
766 | jmp .map |
||
767 | .exit: |
||
5130 | serge | 768 | mov eax, [count] |
2288 | clevermous | 769 | ret |
770 | endp |
||
771 | |||
772 | proc map_memEx stdcall, lin_addr:dword,slot:dword,\ |
||
773 | ofs:dword,buf_size:dword,req_access:dword |
||
5130 | serge | 774 | locals |
775 | count dd ? |
||
776 | process dd ? |
||
777 | endl |
||
2288 | clevermous | 778 | |
5130 | serge | 779 | mov [count], 0 |
2288 | clevermous | 780 | cmp [buf_size], 0 |
781 | jz .exit |
||
782 | |||
783 | mov eax, [slot] |
||
784 | shl eax, 8 |
||
5130 | serge | 785 | mov eax, [SLOT_BASE+eax+APPDATA.process] |
786 | test eax, eax |
||
787 | jz .exit |
||
2288 | clevermous | 788 | |
5130 | serge | 789 | mov [process], eax |
2288 | clevermous | 790 | mov ebx, [ofs] |
791 | shr ebx, 22 |
||
5130 | serge | 792 | mov eax, [eax+PROC.pdt_0+ebx*4] ;get page table |
793 | mov esi, [proc_mem_tab] |
||
2288 | clevermous | 794 | and eax, 0xFFFFF000 |
795 | jz .exit |
||
5356 | serge | 796 | stdcall map_page, esi, eax, PG_SWR |
2288 | clevermous | 797 | @@: |
798 | mov edi, [lin_addr] |
||
799 | and edi, 0xFFFFF000 |
||
800 | mov ecx, [buf_size] |
||
801 | add ecx, 4095 |
||
802 | shr ecx, 12 |
||
5130 | serge | 803 | inc ecx ; ??????????? |
2288 | clevermous | 804 | |
805 | mov edx, [ofs] |
||
806 | shr edx, 12 |
||
807 | and edx, 0x3FF |
||
808 | .map: |
||
809 | stdcall safe_map_page, [slot], [req_access], [ofs] |
||
810 | jnc .exit |
||
5130 | serge | 811 | add [count], PAGE_SIZE |
812 | add [ofs], PAGE_SIZE |
||
813 | dec ecx |
||
814 | jz .exit |
||
815 | |||
816 | add edi, PAGE_SIZE |
||
2288 | clevermous | 817 | inc edx |
5130 | serge | 818 | cmp edx, 1024 |
2288 | clevermous | 819 | jnz .map |
5130 | serge | 820 | |
821 | inc ebx |
||
822 | mov eax, [process] |
||
823 | mov eax, [eax+PROC.pdt_0+ebx*4] |
||
824 | and eax, 0xFFFFF000 |
||
825 | jz .exit |
||
826 | |||
5356 | serge | 827 | stdcall map_page, esi, eax, PG_SWR |
5130 | serge | 828 | xor edx, edx |
829 | jmp .map |
||
2288 | clevermous | 830 | .exit: |
5130 | serge | 831 | mov eax, [count] |
2288 | clevermous | 832 | ret |
833 | endp |
||
834 | |||
835 | ; in: esi+edx*4 = pointer to page table entry |
||
836 | ; in: [slot], [req_access], [ofs] on the stack |
||
837 | ; in: edi = linear address to map |
||
838 | ; out: CF cleared <=> failed |
||
839 | ; destroys: only eax |
||
840 | proc safe_map_page stdcall, slot:dword, req_access:dword, ofs:dword |
||
841 | mov eax, [esi+edx*4] |
||
5356 | serge | 842 | test al, PG_READ |
2288 | clevermous | 843 | jz .not_present |
844 | test al, PG_WRITE |
||
845 | jz .resolve_readonly |
||
846 | ; normal case: writable page, just map with requested access |
||
847 | .map: |
||
848 | stdcall map_page, edi, eax, [req_access] |
||
849 | stc |
||
850 | .fail: |
||
851 | ret |
||
852 | .not_present: |
||
853 | ; check for alloc-on-demand page |
||
854 | test al, 2 |
||
855 | jz .fail |
||
856 | ; allocate new page, save it to source page table |
||
857 | push ecx |
||
858 | call alloc_page |
||
859 | pop ecx |
||
860 | test eax, eax |
||
861 | jz .fail |
||
5356 | serge | 862 | or al, PG_UWR |
2288 | clevermous | 863 | mov [esi+edx*4], eax |
864 | jmp .map |
||
865 | .resolve_readonly: |
||
866 | ; readonly page, probably copy-on-write |
||
867 | ; check: readonly request of readonly page is ok |
||
868 | test [req_access], PG_WRITE |
||
869 | jz .map |
||
870 | ; find control structure for this page |
||
871 | pushf |
||
872 | cli |
||
873 | cld |
||
874 | push ebx ecx |
||
875 | mov eax, [slot] |
||
876 | shl eax, 8 |
||
5130 | serge | 877 | mov eax, [SLOT_BASE+eax+APPDATA.process] |
878 | mov eax, [eax+PROC.dlls_list_ptr] |
||
2288 | clevermous | 879 | test eax, eax |
880 | jz .no_hdll |
||
881 | mov ecx, [eax+HDLL.fd] |
||
882 | .scan_hdll: |
||
883 | cmp ecx, eax |
||
884 | jz .no_hdll |
||
885 | mov ebx, [ofs] |
||
886 | and ebx, not 0xFFF |
||
887 | sub ebx, [ecx+HDLL.base] |
||
888 | cmp ebx, [ecx+HDLL.size] |
||
889 | jb .hdll_found |
||
890 | mov ecx, [ecx+HDLL.fd] |
||
891 | jmp .scan_hdll |
||
892 | .no_hdll: |
||
893 | pop ecx ebx |
||
894 | popf |
||
895 | clc |
||
896 | ret |
||
897 | .hdll_found: |
||
898 | ; allocate page, save it in page table, map it, copy contents from base |
||
899 | mov eax, [ecx+HDLL.parent] |
||
900 | add ebx, [eax+DLLDESCR.data] |
||
901 | call alloc_page |
||
902 | test eax, eax |
||
903 | jz .no_hdll |
||
5356 | serge | 904 | or al, PG_UWR |
2288 | clevermous | 905 | mov [esi+edx*4], eax |
906 | stdcall map_page, edi, eax, [req_access] |
||
907 | push esi edi |
||
908 | mov esi, ebx |
||
909 | mov ecx, 4096/4 |
||
910 | rep movsd |
||
911 | pop edi esi |
||
912 | pop ecx ebx |
||
913 | popf |
||
914 | stc |
||
915 | ret |
||
916 | endp |
||
917 | |||
918 | sys_IPC: |
||
919 | ;input: |
||
920 | ; ebx=1 - set ipc buffer area |
||
921 | ; ecx=address of buffer |
||
922 | ; edx=size of buffer |
||
923 | ; eax=2 - send message |
||
924 | ; ebx=PID |
||
925 | ; ecx=address of message |
||
926 | ; edx=size of message |
||
927 | |||
928 | dec ebx |
||
929 | jnz @f |
||
930 | |||
931 | mov eax, [current_slot] |
||
932 | pushf |
||
933 | cli |
||
934 | mov [eax+APPDATA.ipc_start], ecx ;set fields in extended information area |
||
935 | mov [eax+APPDATA.ipc_size], edx |
||
936 | |||
937 | add edx, ecx |
||
938 | add edx, 4095 |
||
939 | and edx, not 4095 |
||
940 | |||
941 | .touch: |
||
942 | mov eax, [ecx] |
||
943 | add ecx, 0x1000 |
||
944 | cmp ecx, edx |
||
945 | jb .touch |
||
946 | |||
947 | popf |
||
948 | mov [esp+32], ebx ;ebx=0 |
||
949 | ret |
||
950 | |||
951 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
||
952 | ;2 |
||
953 | @@: |
||
954 | dec ebx |
||
955 | jnz @f |
||
956 | |||
957 | stdcall sys_ipc_send, ecx, edx, esi |
||
958 | mov [esp+32], eax |
||
959 | ret |
||
960 | @@: |
||
961 | or eax, -1 |
||
962 | mov [esp+32], eax |
||
963 | ret |
||
964 | |||
965 | proc sys_ipc_send stdcall, PID:dword, msg_addr:dword, msg_size:dword |
||
966 | locals |
||
967 | dst_slot dd ? |
||
968 | dst_offset dd ? |
||
969 | buf_size dd ? |
||
970 | used_buf dd ? |
||
971 | endl |
||
972 | |||
973 | pushf |
||
974 | cli |
||
975 | |||
976 | mov eax, [PID] |
||
977 | call pid_to_slot |
||
978 | test eax, eax |
||
979 | jz .no_pid |
||
980 | |||
981 | mov [dst_slot], eax |
||
982 | shl eax, 8 |
||
5130 | serge | 983 | mov edi, [eax+SLOT_BASE+APPDATA.ipc_start] ;is ipc area defined? |
2288 | clevermous | 984 | test edi, edi |
985 | jz .no_ipc_area |
||
986 | |||
987 | mov ebx, edi |
||
988 | and ebx, 0xFFF |
||
989 | mov [dst_offset], ebx |
||
990 | |||
5130 | serge | 991 | mov esi, [eax+SLOT_BASE+APPDATA.ipc_size] |
2288 | clevermous | 992 | mov [buf_size], esi |
993 | |||
994 | mov ecx, [ipc_tmp] |
||
995 | cmp esi, 0x40000-0x1000; size of [ipc_tmp] minus one page |
||
996 | jbe @f |
||
997 | push esi edi |
||
998 | add esi, 0x1000 |
||
999 | stdcall alloc_kernel_space, esi |
||
1000 | mov ecx, eax |
||
1001 | pop edi esi |
||
1002 | @@: |
||
1003 | mov [used_buf], ecx |
||
5130 | serge | 1004 | stdcall map_mem_ipc, ecx, [dst_slot], \ |
5356 | serge | 1005 | edi, esi, PG_SWR |
2288 | clevermous | 1006 | |
1007 | mov edi, [dst_offset] |
||
1008 | add edi, [used_buf] |
||
1009 | cmp dword [edi], 0 |
||
1010 | jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now |
||
1011 | |||
1012 | mov edx, dword [edi+4] |
||
1013 | lea ebx, [edx+8] |
||
1014 | add ebx, [msg_size] |
||
1015 | cmp ebx, [buf_size] |
||
1016 | ja .buffer_overflow ;esi<0 - not enough memory in buffer |
||
1017 | |||
1018 | mov dword [edi+4], ebx |
||
1019 | mov eax, [TASK_BASE] |
||
1020 | mov eax, [eax+0x04] ;eax - our PID |
||
1021 | add edi, edx |
||
1022 | mov [edi], eax |
||
1023 | mov ecx, [msg_size] |
||
1024 | |||
1025 | mov [edi+4], ecx |
||
1026 | add edi, 8 |
||
1027 | mov esi, [msg_addr] |
||
1028 | ; add esi, new_app_base |
||
1029 | cld |
||
1030 | rep movsb |
||
1031 | |||
1032 | mov ebx, [ipc_tmp] |
||
1033 | mov edx, ebx |
||
1034 | shr ebx, 12 |
||
1035 | xor eax, eax |
||
1036 | mov [page_tabs+ebx*4], eax |
||
1037 | invlpg [edx] |
||
1038 | |||
1039 | mov ebx, [ipc_pdir] |
||
1040 | mov edx, ebx |
||
1041 | shr ebx, 12 |
||
1042 | xor eax, eax |
||
1043 | mov [page_tabs+ebx*4], eax |
||
1044 | invlpg [edx] |
||
1045 | |||
1046 | mov ebx, [ipc_ptab] |
||
1047 | mov edx, ebx |
||
1048 | shr ebx, 12 |
||
1049 | xor eax, eax |
||
1050 | mov [page_tabs+ebx*4], eax |
||
1051 | invlpg [edx] |
||
1052 | |||
1053 | mov eax, [dst_slot] |
||
1054 | shl eax, 8 |
||
1055 | or [eax+SLOT_BASE+0xA8], dword 0x40 |
||
1056 | push 0 |
||
1057 | jmp .ret |
||
1058 | .no_pid: |
||
1059 | popf |
||
1060 | mov eax, 4 |
||
1061 | ret |
||
1062 | .no_ipc_area: |
||
1063 | popf |
||
1064 | xor eax, eax |
||
1065 | inc eax |
||
1066 | ret |
||
1067 | .ipc_blocked: |
||
1068 | push 2 |
||
1069 | jmp .ret |
||
1070 | .buffer_overflow: |
||
1071 | push 3 |
||
1072 | .ret: |
||
1073 | mov eax, [used_buf] |
||
1074 | cmp eax, [ipc_tmp] |
||
5130 | serge | 1075 | je @f |
2288 | clevermous | 1076 | stdcall free_kernel_space, eax |
1077 | @@: |
||
1078 | pop eax |
||
1079 | popf |
||
1080 | ret |
||
1081 | endp |
||
1082 | |||
1083 | align 4 |
||
1084 | sysfn_meminfo: |
||
1085 | cmp ecx, OS_BASE |
||
1086 | jae .fail |
||
1087 | |||
1088 | mov eax, [pg_data.pages_count] |
||
1089 | mov [ecx], eax |
||
1090 | shl eax, 12 |
||
1091 | mov [esp+32], eax |
||
1092 | mov eax, [pg_data.pages_free] |
||
1093 | mov [ecx+4], eax |
||
1094 | mov eax, [pg_data.pages_faults] |
||
1095 | mov [ecx+8], eax |
||
1096 | mov eax, [heap_size] |
||
1097 | mov [ecx+12], eax |
||
1098 | mov eax, [heap_free] |
||
1099 | mov [ecx+16], eax |
||
1100 | mov eax, [heap_blocks] |
||
1101 | mov [ecx+20], eax |
||
1102 | mov eax, [free_blocks] |
||
1103 | mov [ecx+24], eax |
||
1104 | ret |
||
1105 | .fail: |
||
1106 | or dword [esp+32], -1 |
||
1107 | ret |
||
1108 | |||
1109 | align 4 |
||
1110 | f68: |
||
1111 | cmp ebx, 4 |
||
1112 | jbe sys_sheduler |
||
1113 | |||
1114 | cmp ebx, 11 |
||
1115 | jb .fail |
||
1116 | |||
3786 | Serge | 1117 | cmp ebx, 27 |
2288 | clevermous | 1118 | ja .fail |
1119 | |||
1120 | jmp dword [f68call+ebx*4-11*4] |
||
1121 | .11: |
||
1122 | call init_heap |
||
1123 | mov [esp+32], eax |
||
1124 | ret |
||
1125 | .12: |
||
1126 | stdcall user_alloc, ecx |
||
1127 | mov [esp+32], eax |
||
1128 | ret |
||
1129 | .13: |
||
1130 | stdcall user_free, ecx |
||
1131 | mov [esp+32], eax |
||
1132 | ret |
||
1133 | .14: |
||
1134 | cmp ecx, OS_BASE |
||
1135 | jae .fail |
||
1136 | mov edi, ecx |
||
1137 | call get_event_ex |
||
1138 | mov [esp+32], eax |
||
1139 | ret |
||
1140 | .16: |
||
1141 | test ecx, ecx |
||
1142 | jz .fail |
||
1143 | cmp ecx, OS_BASE |
||
1144 | jae .fail |
||
1145 | stdcall get_service, ecx |
||
1146 | mov [esp+32], eax |
||
1147 | ret |
||
1148 | .17: |
||
1149 | call srv_handlerEx ;ecx |
||
1150 | mov [esp+32], eax |
||
1151 | ret |
||
1152 | .19: |
||
1153 | cmp ecx, OS_BASE |
||
1154 | jae .fail |
||
1155 | stdcall load_library, ecx |
||
1156 | mov [esp+32], eax |
||
1157 | ret |
||
1158 | .20: |
||
1159 | mov eax, edx |
||
1160 | mov ebx, ecx |
||
1161 | call user_realloc ;in: eax = pointer, ebx = new size |
||
1162 | mov [esp+32], eax |
||
1163 | ret |
||
1164 | .21: |
||
1165 | cmp ecx, OS_BASE |
||
1166 | jae .fail |
||
1167 | |||
2647 | mario79 | 1168 | cmp edx, OS_BASE |
2288 | clevermous | 1169 | jae .fail |
1170 | |||
4418 | clevermous | 1171 | stdcall load_pe_driver, ecx, edx |
2288 | clevermous | 1172 | mov [esp+32], eax |
1173 | ret |
||
1174 | .22: |
||
1175 | cmp ecx, OS_BASE |
||
1176 | jae .fail |
||
1177 | |||
1178 | stdcall shmem_open, ecx, edx, esi |
||
1179 | mov [esp+24], edx |
||
1180 | mov [esp+32], eax |
||
1181 | ret |
||
1182 | |||
1183 | .23: |
||
1184 | cmp ecx, OS_BASE |
||
1185 | jae .fail |
||
1186 | |||
1187 | stdcall shmem_close, ecx |
||
1188 | mov [esp+32], eax |
||
1189 | ret |
||
1190 | .24: |
||
1191 | mov eax, [current_slot] |
||
1192 | xchg ecx, [eax+APPDATA.exc_handler] |
||
1193 | xchg edx, [eax+APPDATA.except_mask] |
||
1194 | mov [esp+32], ecx ; reg_eax+8 |
||
1195 | mov [esp+20], edx ; reg_ebx+8 |
||
1196 | ret |
||
1197 | .25: |
||
1198 | cmp ecx, 32 |
||
1199 | jae .fail |
||
1200 | mov eax, [current_slot] |
||
1201 | btr [eax+APPDATA.except_mask], ecx |
||
1202 | setc byte[esp+32] |
||
1203 | jecxz @f |
||
1204 | bts [eax+APPDATA.except_mask], ecx |
||
1205 | @@: |
||
1206 | ret |
||
1207 | |||
2400 | Serge | 1208 | .26: |
1209 | stdcall user_unmap, ecx, edx, esi |
||
1210 | mov [esp+32], eax |
||
1211 | ret |
||
1212 | |||
3786 | Serge | 1213 | .27: |
1214 | cmp ecx, OS_BASE |
||
1215 | jae .fail |
||
1216 | |||
1217 | stdcall load_file_umode, ecx |
||
1218 | mov [esp+24], edx |
||
1219 | mov [esp+32], eax |
||
1220 | ret |
||
1221 | |||
2288 | clevermous | 1222 | .fail: |
1223 | xor eax, eax |
||
1224 | mov [esp+32], eax |
||
1225 | ret |
||
1226 | |||
1227 | |||
1228 | align 4 |
||
1229 | f68call: ; keep this table closer to main code |
||
1230 | |||
1231 | dd f68.11 ; init_heap |
||
1232 | dd f68.12 ; user_alloc |
||
1233 | dd f68.13 ; user_free |
||
1234 | dd f68.14 ; get_event_ex |
||
1235 | dd f68.fail ; moved to f68.24 |
||
1236 | dd f68.16 ; get_service |
||
1237 | dd f68.17 ; call_service |
||
1238 | dd f68.fail ; moved to f68.25 |
||
1239 | dd f68.19 ; load_dll |
||
1240 | dd f68.20 ; user_realloc |
||
1241 | dd f68.21 ; load_driver |
||
1242 | dd f68.22 ; shmem_open |
||
1243 | dd f68.23 ; shmem_close |
||
2400 | Serge | 1244 | dd f68.24 ; set exception handler |
1245 | dd f68.25 ; unmask exception |
||
1246 | dd f68.26 ; user_unmap |
||
3786 | Serge | 1247 | dd f68.27 ; load_file_umode |
2288 | clevermous | 1248 | |
1249 | |||
1250 | align 4 |
||
4418 | clevermous | 1251 | proc load_pe_driver stdcall, file:dword, cmdline:dword |
1252 | push esi |
||
2288 | clevermous | 1253 | |
1254 | stdcall load_PE, [file] |
||
1255 | test eax, eax |
||
1256 | jz .fail |
||
1257 | |||
1258 | mov esi, eax |
||
4418 | clevermous | 1259 | push [cmdline] |
1260 | push DRV_ENTRY |
||
1261 | call eax |
||
1262 | pop ecx |
||
1263 | pop ecx |
||
2288 | clevermous | 1264 | test eax, eax |
1265 | jz .fail |
||
1266 | |||
1267 | mov [eax+SRV.entry], esi |
||
4418 | clevermous | 1268 | pop esi |
2288 | clevermous | 1269 | ret |
1270 | |||
1271 | .fail: |
||
1272 | xor eax, eax |
||
4418 | clevermous | 1273 | pop esi |
2288 | clevermous | 1274 | ret |
1275 | endp |
||
1276 | |||
1277 | align 4 |
||
1278 | proc create_ring_buffer stdcall, size:dword, flags:dword |
||
1279 | locals |
||
1280 | buf_ptr dd ? |
||
1281 | endl |
||
1282 | |||
1283 | mov eax, [size] |
||
1284 | test eax, eax |
||
1285 | jz .fail |
||
1286 | |||
1287 | add eax, eax |
||
1288 | stdcall alloc_kernel_space, eax |
||
1289 | test eax, eax |
||
1290 | jz .fail |
||
1291 | |||
1292 | push ebx |
||
1293 | |||
1294 | mov [buf_ptr], eax |
||
1295 | |||
1296 | mov ebx, [size] |
||
1297 | shr ebx, 12 |
||
1298 | push ebx |
||
1299 | |||
1300 | stdcall alloc_pages, ebx |
||
1301 | pop ecx |
||
1302 | |||
1303 | test eax, eax |
||
1304 | jz .mm_fail |
||
1305 | |||
1306 | push edi |
||
1307 | |||
1308 | or eax, [flags] |
||
1309 | mov edi, [buf_ptr] |
||
1310 | mov ebx, [buf_ptr] |
||
1311 | mov edx, ecx |
||
1312 | shl edx, 2 |
||
1313 | shr edi, 10 |
||
1314 | @@: |
||
1315 | mov [page_tabs+edi], eax |
||
1316 | mov [page_tabs+edi+edx], eax |
||
1317 | invlpg [ebx] |
||
1318 | invlpg [ebx+0x10000] |
||
1319 | add eax, 0x1000 |
||
1320 | add ebx, 0x1000 |
||
1321 | add edi, 4 |
||
1322 | dec ecx |
||
1323 | jnz @B |
||
1324 | |||
1325 | mov eax, [buf_ptr] |
||
1326 | pop edi |
||
1327 | pop ebx |
||
1328 | ret |
||
1329 | .mm_fail: |
||
1330 | stdcall free_kernel_space, [buf_ptr] |
||
1331 | xor eax, eax |
||
1332 | pop ebx |
||
1333 | .fail: |
||
1334 | ret |
||
1335 | endp |
||
2466 | Serge | 1336 | |
1337 | |||
1338 | align 4 |
||
1339 | proc print_mem |
||
1340 | mov edi, BOOT_VAR + 0x9104 |
||
1341 | mov ecx, [edi-4] |
||
1342 | test ecx, ecx |
||
1343 | jz .done |
||
1344 | |||
1345 | @@: |
||
1346 | mov eax, [edi] |
||
1347 | mov edx, [edi+4] |
||
1348 | add eax, [edi+8] |
||
1349 | adc edx, [edi+12] |
||
1350 | |||
1351 | DEBUGF 1, "K : E820 %x%x - %x%x type %d\n", \ |
||
1352 | [edi+4], [edi],\ |
||
1353 | edx, eax, [edi+16] |
||
1354 | add edi, 20 |
||
1355 | dec ecx |
||
1356 | jnz @b |
||
1357 | .done: |
||
1358 | ret |
||
1359 | endp0>>=> |