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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: 3296 $ |
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9 | |||
10 | |||
11 | DRV_COMPAT equ 5 ;minimal required drivers version |
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12 | DRV_CURRENT equ 6 ;current drivers model version |
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13 | |||
14 | DRV_VERSION equ (DRV_COMPAT shl 16) or DRV_CURRENT |
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15 | PID_KERNEL equ 1 ;os_idle thread |
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16 | |||
17 | |||
18 | |||
19 | align 4 |
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20 | proc get_notify stdcall, p_ev:dword |
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21 | |||
22 | .wait: |
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23 | mov ebx, [current_slot] |
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24 | test dword [ebx+APPDATA.event_mask], EVENT_NOTIFY |
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25 | jz @f |
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26 | and dword [ebx+APPDATA.event_mask], not EVENT_NOTIFY |
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27 | mov edi, [p_ev] |
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28 | mov dword [edi], EV_INTR |
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29 | mov eax, [ebx+APPDATA.event] |
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30 | mov dword [edi+4], eax |
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31 | ret |
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32 | @@: |
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33 | call change_task |
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34 | jmp .wait |
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35 | endp |
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36 | |||
37 | align 4 |
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38 | proc pci_read32 stdcall, bus:dword, devfn:dword, reg:dword |
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39 | push ebx |
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40 | xor eax, eax |
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41 | xor ebx, ebx |
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42 | mov ah, byte [bus] |
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43 | mov al, 6 |
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44 | mov bh, byte [devfn] |
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45 | mov bl, byte [reg] |
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46 | call pci_read_reg |
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47 | pop ebx |
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48 | ret |
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49 | endp |
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50 | |||
51 | align 4 |
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52 | proc pci_read16 stdcall, bus:dword, devfn:dword, reg:dword |
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53 | push ebx |
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54 | xor eax, eax |
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55 | xor ebx, ebx |
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56 | mov ah, byte [bus] |
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57 | mov al, 5 |
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58 | mov bh, byte [devfn] |
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59 | mov bl, byte [reg] |
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60 | call pci_read_reg |
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61 | pop ebx |
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62 | ret |
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63 | endp |
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64 | |||
65 | align 4 |
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66 | proc pci_read8 stdcall, bus:dword, devfn:dword, reg:dword |
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67 | push ebx |
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68 | xor eax, eax |
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69 | xor ebx, ebx |
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70 | mov ah, byte [bus] |
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71 | mov al, 4 |
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72 | mov bh, byte [devfn] |
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73 | mov bl, byte [reg] |
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74 | call pci_read_reg |
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75 | pop ebx |
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76 | ret |
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77 | endp |
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78 | |||
79 | align 4 |
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80 | proc pci_write8 stdcall, bus:dword, devfn:dword, reg:dword, val:dword |
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81 | push ebx |
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82 | xor eax, eax |
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83 | xor ebx, ebx |
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84 | mov ah, byte [bus] |
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85 | mov al, 8 |
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86 | mov bh, byte [devfn] |
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87 | mov bl, byte [reg] |
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88 | mov ecx, [val] |
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89 | call pci_write_reg |
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90 | pop ebx |
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91 | ret |
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92 | endp |
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93 | |||
94 | align 4 |
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95 | proc pci_write16 stdcall, bus:dword, devfn:dword, reg:dword, val:dword |
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96 | push ebx |
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97 | xor eax, eax |
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98 | xor ebx, ebx |
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99 | mov ah, byte [bus] |
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100 | mov al, 9 |
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101 | mov bh, byte [devfn] |
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102 | mov bl, byte [reg] |
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103 | mov ecx, [val] |
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104 | call pci_write_reg |
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105 | pop ebx |
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106 | ret |
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107 | endp |
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108 | |||
109 | align 4 |
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110 | proc pci_write32 stdcall, bus:dword, devfn:dword, reg:dword, val:dword |
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111 | push ebx |
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112 | xor eax, eax |
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113 | xor ebx, ebx |
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114 | mov ah, byte [bus] |
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115 | mov al, 10 |
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116 | mov bh, byte [devfn] |
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117 | mov bl, byte [reg] |
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118 | mov ecx, [val] |
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119 | call pci_write_reg |
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120 | pop ebx |
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121 | ret |
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122 | endp |
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123 | |||
124 | handle equ IOCTL.handle |
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125 | io_code equ IOCTL.io_code |
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126 | input equ IOCTL.input |
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127 | inp_size equ IOCTL.inp_size |
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128 | output equ IOCTL.output |
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129 | out_size equ IOCTL.out_size |
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130 | |||
131 | |||
132 | align 4 |
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133 | proc srv_handler stdcall, ioctl:dword |
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134 | mov esi, [ioctl] |
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135 | test esi, esi |
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136 | jz .err |
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137 | |||
138 | mov edi, [esi+handle] |
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139 | cmp [edi+SRV.magic], ' SRV' |
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140 | jne .fail |
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141 | |||
2384 | hidnplayr | 142 | cmp [edi+SRV.size], sizeof.SRV |
2288 | clevermous | 143 | jne .fail |
144 | |||
145 | stdcall [edi+SRV.srv_proc], esi |
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146 | ret |
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147 | .fail: |
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148 | xor eax, eax |
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149 | not eax |
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150 | mov [esi+output], eax |
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151 | mov [esi+out_size], 4 |
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152 | ret |
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153 | .err: |
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154 | xor eax, eax |
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155 | not eax |
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156 | ret |
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157 | endp |
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158 | |||
159 | ; param |
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160 | ; ecx= io_control |
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161 | ; |
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162 | ; retval |
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163 | ; eax= error code |
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164 | |||
165 | align 4 |
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166 | srv_handlerEx: |
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167 | cmp ecx, OS_BASE |
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168 | jae .fail |
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169 | |||
170 | mov eax, [ecx+handle] |
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171 | cmp [eax+SRV.magic], ' SRV' |
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172 | jne .fail |
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173 | |||
2384 | hidnplayr | 174 | cmp [eax+SRV.size], sizeof.SRV |
2288 | clevermous | 175 | jne .fail |
176 | |||
177 | stdcall [eax+SRV.srv_proc], ecx |
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178 | ret |
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179 | .fail: |
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180 | or eax, -1 |
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181 | ret |
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182 | |||
183 | restore handle |
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184 | restore io_code |
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185 | restore input |
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186 | restore inp_size |
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187 | restore output |
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188 | restore out_size |
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189 | |||
190 | align 4 |
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191 | proc get_service stdcall, sz_name:dword |
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192 | mov eax, [sz_name] |
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193 | test eax, eax |
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194 | jnz @F |
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195 | ret |
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196 | @@: |
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197 | mov edx, [srv.fd] |
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198 | @@: |
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2384 | hidnplayr | 199 | cmp edx, srv.fd-SRV.fd |
2288 | clevermous | 200 | je .not_load |
201 | |||
202 | stdcall strncmp, edx, [sz_name], 16 |
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203 | test eax, eax |
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204 | je .ok |
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205 | |||
206 | mov edx, [edx+SRV.fd] |
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207 | jmp @B |
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208 | .not_load: |
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209 | pop ebp |
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210 | jmp load_driver |
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211 | .ok: |
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212 | mov eax, edx |
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213 | ret |
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214 | endp |
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215 | |||
216 | align 4 |
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217 | proc reg_service stdcall, name:dword, handler:dword |
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218 | |||
219 | push ebx |
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220 | |||
221 | xor eax, eax |
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222 | |||
223 | cmp [name], eax |
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224 | je .fail |
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225 | |||
226 | cmp [handler], eax |
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227 | je .fail |
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228 | |||
2384 | hidnplayr | 229 | mov eax, sizeof.SRV |
2288 | clevermous | 230 | call malloc |
231 | test eax, eax |
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232 | jz .fail |
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233 | |||
234 | push esi |
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235 | push edi |
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236 | mov edi, eax |
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237 | mov esi, [name] |
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238 | movsd |
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239 | movsd |
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240 | movsd |
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241 | movsd |
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242 | pop edi |
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243 | pop esi |
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244 | |||
245 | mov [eax+SRV.magic], ' SRV' |
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2384 | hidnplayr | 246 | mov [eax+SRV.size], sizeof.SRV |
2288 | clevermous | 247 | |
2384 | hidnplayr | 248 | mov ebx, srv.fd-SRV.fd |
2288 | clevermous | 249 | mov edx, [ebx+SRV.fd] |
250 | mov [eax+SRV.fd], edx |
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251 | mov [eax+SRV.bk], ebx |
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252 | mov [ebx+SRV.fd], eax |
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253 | mov [edx+SRV.bk], eax |
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254 | |||
255 | mov ecx, [handler] |
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256 | mov [eax+SRV.srv_proc], ecx |
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257 | pop ebx |
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258 | ret |
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259 | .fail: |
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260 | xor eax, eax |
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261 | pop ebx |
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262 | ret |
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263 | endp |
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264 | |||
265 | align 4 |
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266 | proc get_proc stdcall, exp:dword, sz_name:dword |
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267 | |||
268 | mov edx, [exp] |
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269 | .next: |
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270 | mov eax, [edx] |
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271 | test eax, eax |
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272 | jz .end |
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273 | |||
274 | push edx |
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275 | stdcall strncmp, eax, [sz_name], 16 |
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276 | pop edx |
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277 | test eax, eax |
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278 | jz .ok |
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279 | |||
280 | add edx, 8 |
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281 | jmp .next |
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282 | .ok: |
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283 | mov eax, [edx+4] |
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284 | .end: |
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285 | ret |
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286 | endp |
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287 | |||
288 | align 4 |
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289 | proc get_coff_sym stdcall, pSym:dword,count:dword, sz_sym:dword |
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290 | |||
291 | @@: |
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292 | stdcall strncmp, [pSym], [sz_sym], 8 |
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293 | test eax, eax |
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294 | jz .ok |
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295 | add [pSym], 18 |
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296 | dec [count] |
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297 | jnz @b |
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298 | xor eax, eax |
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299 | ret |
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300 | .ok: |
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301 | mov eax, [pSym] |
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302 | mov eax, [eax+8] |
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303 | ret |
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304 | endp |
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305 | |||
306 | align 4 |
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307 | proc get_curr_task |
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308 | mov eax, [CURRENT_TASK] |
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309 | shl eax, 8 |
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310 | ret |
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311 | endp |
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312 | |||
313 | align 4 |
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314 | proc get_fileinfo stdcall, file_name:dword, info:dword |
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315 | locals |
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316 | cmd dd ? |
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317 | offset dd ? |
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318 | dd ? |
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319 | count dd ? |
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320 | buff dd ? |
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321 | db ? |
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322 | name dd ? |
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323 | endl |
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324 | |||
325 | xor eax, eax |
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326 | mov ebx, [file_name] |
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327 | mov ecx, [info] |
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328 | |||
329 | mov [cmd], 5 |
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330 | mov [offset], eax |
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331 | mov [offset+4], eax |
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332 | mov [count], eax |
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333 | mov [buff], ecx |
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334 | mov byte [buff+4], al |
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335 | mov [name], ebx |
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336 | |||
337 | mov eax, 70 |
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338 | lea ebx, [cmd] |
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339 | int 0x40 |
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340 | ret |
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341 | endp |
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342 | |||
343 | align 4 |
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344 | proc read_file stdcall,file_name:dword, buffer:dword, off:dword,\ |
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345 | bytes:dword |
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346 | locals |
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347 | cmd dd ? |
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348 | offset dd ? |
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349 | dd ? |
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350 | count dd ? |
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351 | buff dd ? |
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352 | db ? |
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353 | name dd ? |
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354 | endl |
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355 | |||
356 | xor eax, eax |
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357 | mov ebx, [file_name] |
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358 | mov ecx, [off] |
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359 | mov edx, [bytes] |
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360 | mov esi, [buffer] |
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361 | |||
362 | mov [cmd], eax |
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363 | mov [offset], ecx |
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364 | mov [offset+4], eax |
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365 | mov [count], edx |
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366 | mov [buff], esi |
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367 | mov byte [buff+4], al |
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368 | mov [name], ebx |
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369 | |||
370 | pushad |
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371 | lea ebx, [cmd] |
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3296 | clevermous | 372 | call file_system_lfn_protected |
2288 | clevermous | 373 | popad |
374 | ret |
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375 | endp |
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376 | |||
377 | ; description |
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378 | ; allocate kernel memory and loads the specified file |
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379 | ; |
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380 | ; param |
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381 | ; file_name= full path to file |
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382 | ; |
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383 | ; retval |
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384 | ; eax= file image in kernel memory |
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385 | ; ebx= size of file |
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386 | ; |
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387 | ; warging |
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388 | ; You mast call kernel_free() to delete each file |
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389 | ; loaded by the load_file() function |
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390 | |||
391 | align 4 |
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392 | proc load_file stdcall, file_name:dword |
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393 | locals |
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394 | attr dd ? |
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395 | flags dd ? |
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396 | cr_time dd ? |
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397 | cr_date dd ? |
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398 | acc_time dd ? |
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399 | acc_date dd ? |
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400 | mod_time dd ? |
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401 | mod_date dd ? |
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402 | file_size dd ? |
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403 | |||
404 | file dd ? |
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405 | file2 dd ? |
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406 | endl |
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407 | |||
408 | push esi |
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409 | push edi |
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410 | |||
411 | lea eax, [attr] |
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412 | stdcall get_fileinfo, [file_name], eax |
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413 | test eax, eax |
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414 | jnz .fail |
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415 | |||
416 | mov eax, [file_size] |
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417 | cmp eax, 1024*1024*16 |
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418 | ja .fail |
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419 | |||
420 | stdcall kernel_alloc, [file_size] |
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421 | mov [file], eax |
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422 | test eax, eax |
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423 | jz .fail |
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424 | |||
425 | stdcall read_file, [file_name], eax, dword 0, [file_size] |
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426 | cmp ebx, [file_size] |
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427 | jne .cleanup |
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428 | |||
429 | mov eax, [file] |
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430 | cmp dword [eax], 0x4B43504B |
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431 | jne .exit |
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432 | mov ebx, [eax+4] |
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433 | mov [file_size], ebx |
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434 | stdcall kernel_alloc, ebx |
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435 | |||
436 | test eax, eax |
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437 | jz .cleanup |
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438 | |||
439 | mov [file2], eax |
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2486 | mario79 | 440 | |
2500 | mario79 | 441 | pushad |
2489 | mario79 | 442 | mov ecx, unpack_mutex |
443 | call mutex_lock |
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2500 | mario79 | 444 | popad |
2486 | mario79 | 445 | |
2288 | clevermous | 446 | stdcall unpack, [file], eax |
2486 | mario79 | 447 | |
2500 | mario79 | 448 | pushad |
449 | mov ecx, unpack_mutex |
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2489 | mario79 | 450 | call mutex_unlock |
2500 | mario79 | 451 | popad |
2486 | mario79 | 452 | |
2288 | clevermous | 453 | stdcall kernel_free, [file] |
454 | mov eax, [file2] |
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455 | mov ebx, [file_size] |
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456 | .exit: |
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457 | push eax |
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458 | lea edi, [eax+ebx] ;cleanup remain space |
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459 | mov ecx, 4096 ;from file end |
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460 | and ebx, 4095 |
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461 | jz @f |
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462 | sub ecx, ebx |
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463 | xor eax, eax |
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464 | cld |
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465 | rep stosb |
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466 | @@: |
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467 | mov ebx, [file_size] |
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468 | pop eax |
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469 | pop edi |
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470 | pop esi |
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471 | ret |
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472 | .cleanup: |
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473 | stdcall kernel_free, [file] |
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474 | .fail: |
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475 | xor eax, eax |
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476 | xor ebx, ebx |
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477 | pop edi |
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478 | pop esi |
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479 | ret |
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480 | endp |
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481 | |||
2489 | mario79 | 482 | uglobal |
2288 | clevermous | 483 | align 4 |
2489 | mario79 | 484 | unpack_mutex MUTEX |
2486 | mario79 | 485 | endg |
486 | |||
487 | align 4 |
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2288 | clevermous | 488 | proc get_proc_ex stdcall, proc_name:dword, imports:dword |
489 | |||
490 | .look_up: |
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491 | mov edx, [imports] |
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492 | test edx, edx |
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493 | jz .end |
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494 | mov edx, [edx] |
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495 | test edx, edx |
||
496 | jz .end |
||
497 | .next: |
||
498 | mov eax, [edx] |
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499 | test eax, eax |
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500 | jz .next_table |
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501 | |||
502 | push edx |
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503 | stdcall strncmp, eax, [proc_name], 256 |
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504 | pop edx |
||
505 | test eax, eax |
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506 | jz .ok |
||
507 | |||
508 | add edx, 8 |
||
509 | jmp .next |
||
510 | .next_table: |
||
511 | add [imports], 4 |
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512 | jmp .look_up |
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513 | .ok: |
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514 | mov eax, [edx+4] |
||
515 | ret |
||
516 | .end: |
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517 | xor eax, eax |
||
518 | ret |
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519 | endp |
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520 | |||
521 | align 4 |
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522 | proc fix_coff_symbols stdcall uses ebx esi, sec:dword, symbols:dword,\ |
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523 | sym_count:dword, strings:dword, imports:dword |
||
524 | locals |
||
525 | retval dd ? |
||
526 | endl |
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527 | |||
528 | mov edi, [symbols] |
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529 | mov [retval], 1 |
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530 | .fix: |
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2384 | hidnplayr | 531 | movzx ebx, [edi+COFF_SYM.SectionNumber] |
2288 | clevermous | 532 | test ebx, ebx |
533 | jnz .internal |
||
2384 | hidnplayr | 534 | mov eax, dword [edi+COFF_SYM.Name] |
2288 | clevermous | 535 | test eax, eax |
536 | jnz @F |
||
537 | |||
538 | mov edi, [edi+4] |
||
539 | add edi, [strings] |
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540 | @@: |
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541 | push edi |
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542 | stdcall get_proc_ex, edi, [imports] |
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543 | pop edi |
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544 | |||
545 | xor ebx, ebx |
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546 | test eax, eax |
||
547 | jnz @F |
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548 | |||
549 | mov esi, msg_unresolved |
||
550 | call sys_msg_board_str |
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551 | mov esi, edi |
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552 | call sys_msg_board_str |
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553 | mov esi, msg_CR |
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554 | call sys_msg_board_str |
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555 | |||
556 | mov [retval], 0 |
||
557 | @@: |
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558 | mov edi, [symbols] |
||
2384 | hidnplayr | 559 | mov [edi+COFF_SYM.Value], eax |
2288 | clevermous | 560 | jmp .next |
561 | .internal: |
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562 | cmp bx, -1 |
||
563 | je .next |
||
564 | cmp bx, -2 |
||
565 | je .next |
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566 | |||
567 | dec ebx |
||
568 | shl ebx, 3 |
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569 | lea ebx, [ebx+ebx*4] |
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570 | add ebx, [sec] |
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571 | |||
2384 | hidnplayr | 572 | mov eax, [ebx+COFF_SECTION.VirtualAddress] |
573 | add [edi+COFF_SYM.Value], eax |
||
2288 | clevermous | 574 | .next: |
2384 | hidnplayr | 575 | add edi, sizeof.COFF_SYM |
2288 | clevermous | 576 | mov [symbols], edi |
577 | dec [sym_count] |
||
578 | jnz .fix |
||
579 | mov eax, [retval] |
||
580 | ret |
||
581 | endp |
||
582 | |||
583 | align 4 |
||
584 | proc fix_coff_relocs stdcall uses ebx esi, coff:dword, sym:dword, \ |
||
585 | delta:dword |
||
586 | locals |
||
587 | n_sec dd ? |
||
588 | endl |
||
589 | |||
590 | mov eax, [coff] |
||
2384 | hidnplayr | 591 | movzx ebx, [eax+COFF_HEADER.nSections] |
2288 | clevermous | 592 | mov [n_sec], ebx |
593 | lea esi, [eax+20] |
||
594 | .fix_sec: |
||
2384 | hidnplayr | 595 | mov edi, [esi+COFF_SECTION.PtrReloc] |
2288 | clevermous | 596 | add edi, [coff] |
597 | |||
2384 | hidnplayr | 598 | movzx ecx, [esi+COFF_SECTION.NumReloc] |
2288 | clevermous | 599 | test ecx, ecx |
600 | jz .next |
||
601 | .reloc_loop: |
||
2384 | hidnplayr | 602 | mov ebx, [edi+COFF_RELOC.SymIndex] |
2288 | clevermous | 603 | add ebx, ebx |
604 | lea ebx, [ebx+ebx*8] |
||
605 | add ebx, [sym] |
||
606 | |||
2384 | hidnplayr | 607 | mov edx, [ebx+COFF_SYM.Value] |
2288 | clevermous | 608 | |
2384 | hidnplayr | 609 | cmp [edi+COFF_RELOC.Type], 6 |
2288 | clevermous | 610 | je .dir_32 |
611 | |||
2384 | hidnplayr | 612 | cmp [edi+COFF_RELOC.Type], 20 |
2288 | clevermous | 613 | jne .next_reloc |
614 | .rel_32: |
||
2384 | hidnplayr | 615 | mov eax, [edi+COFF_RELOC.VirtualAddress] |
616 | add eax, [esi+COFF_SECTION.VirtualAddress] |
||
2288 | clevermous | 617 | sub edx, eax |
618 | sub edx, 4 |
||
619 | jmp .fix |
||
620 | .dir_32: |
||
2384 | hidnplayr | 621 | mov eax, [edi+COFF_RELOC.VirtualAddress] |
622 | add eax, [esi+COFF_SECTION.VirtualAddress] |
||
2288 | clevermous | 623 | .fix: |
624 | add eax, [delta] |
||
625 | add [eax], edx |
||
626 | .next_reloc: |
||
627 | add edi, 10 |
||
628 | dec ecx |
||
629 | jnz .reloc_loop |
||
630 | .next: |
||
2384 | hidnplayr | 631 | add esi, sizeof.COFF_SECTION |
2288 | clevermous | 632 | dec [n_sec] |
633 | jnz .fix_sec |
||
634 | .exit: |
||
635 | ret |
||
636 | endp |
||
637 | |||
638 | align 4 |
||
639 | proc rebase_coff stdcall uses ebx esi, coff:dword, sym:dword, \ |
||
640 | delta:dword |
||
641 | locals |
||
642 | n_sec dd ? |
||
643 | endl |
||
644 | |||
645 | mov eax, [coff] |
||
2384 | hidnplayr | 646 | movzx ebx, [eax+COFF_HEADER.nSections] |
2288 | clevermous | 647 | mov [n_sec], ebx |
648 | lea esi, [eax+20] |
||
649 | mov edx, [delta] |
||
650 | .fix_sec: |
||
2384 | hidnplayr | 651 | mov edi, [esi+COFF_SECTION.PtrReloc] |
2288 | clevermous | 652 | add edi, [coff] |
653 | |||
2384 | hidnplayr | 654 | movzx ecx, [esi+COFF_SECTION.NumReloc] |
2288 | clevermous | 655 | test ecx, ecx |
656 | jz .next |
||
657 | .reloc_loop: |
||
2384 | hidnplayr | 658 | cmp [edi+COFF_RELOC.Type], 6 |
2288 | clevermous | 659 | jne .next_reloc |
660 | .dir_32: |
||
2384 | hidnplayr | 661 | mov eax, [edi+COFF_RELOC.VirtualAddress] |
662 | add eax, [esi+COFF_SECTION.VirtualAddress] |
||
2288 | clevermous | 663 | add [eax+edx], edx |
664 | .next_reloc: |
||
665 | add edi, 10 |
||
666 | dec ecx |
||
667 | jnz .reloc_loop |
||
668 | .next: |
||
2384 | hidnplayr | 669 | add esi, sizeof.COFF_SECTION |
2288 | clevermous | 670 | dec [n_sec] |
671 | jnz .fix_sec |
||
672 | .exit: |
||
673 | ret |
||
674 | endp |
||
675 | |||
676 | align 4 |
||
677 | proc load_driver stdcall, driver_name:dword |
||
678 | locals |
||
679 | coff dd ? |
||
680 | sym dd ? |
||
681 | strings dd ? |
||
682 | img_size dd ? |
||
683 | img_base dd ? |
||
684 | start dd ? |
||
685 | |||
686 | exports dd ? ;fake exports table |
||
687 | dd ? |
||
688 | file_name rb 13+16+4+1 ; '/sys/drivers/ |
||
689 | endl |
||
690 | |||
691 | lea edx, [file_name] |
||
692 | mov dword [edx], '/sys' |
||
693 | mov dword [edx+4], '/dri' |
||
694 | mov dword [edx+8], 'vers' |
||
695 | mov byte [edx+12], '/' |
||
696 | mov esi, [driver_name] |
||
697 | .redo: |
||
698 | lea edx, [file_name] |
||
699 | lea edi, [edx+13] |
||
700 | mov ecx, 16 |
||
701 | @@: |
||
702 | lodsb |
||
703 | test al, al |
||
704 | jz @f |
||
705 | stosb |
||
706 | loop @b |
||
707 | @@: |
||
708 | mov dword [edi], '.obj' |
||
709 | mov byte [edi+4], 0 |
||
710 | stdcall load_file, edx |
||
711 | |||
712 | test eax, eax |
||
713 | jz .exit |
||
714 | |||
715 | mov [coff], eax |
||
716 | |||
2384 | hidnplayr | 717 | movzx ecx, [eax+COFF_HEADER.nSections] |
2288 | clevermous | 718 | xor ebx, ebx |
719 | |||
720 | lea edx, [eax+20] |
||
721 | @@: |
||
2384 | hidnplayr | 722 | add ebx, [edx+COFF_SECTION.SizeOfRawData] |
2288 | clevermous | 723 | add ebx, 15 |
724 | and ebx, not 15 |
||
2384 | hidnplayr | 725 | add edx, sizeof.COFF_SECTION |
2288 | clevermous | 726 | dec ecx |
727 | jnz @B |
||
728 | mov [img_size], ebx |
||
729 | |||
730 | stdcall kernel_alloc, ebx |
||
731 | test eax, eax |
||
732 | jz .fail |
||
733 | mov [img_base], eax |
||
734 | |||
735 | mov edi, eax |
||
736 | xor eax, eax |
||
737 | mov ecx, [img_size] |
||
738 | add ecx, 4095 |
||
739 | and ecx, not 4095 |
||
740 | shr ecx, 2 |
||
741 | cld |
||
742 | rep stosd |
||
743 | |||
744 | mov edx, [coff] |
||
2384 | hidnplayr | 745 | movzx ebx, [edx+COFF_HEADER.nSections] |
2288 | clevermous | 746 | mov edi, [img_base] |
747 | lea eax, [edx+20] |
||
748 | @@: |
||
2384 | hidnplayr | 749 | mov [eax+COFF_SECTION.VirtualAddress], edi |
750 | mov esi, [eax+COFF_SECTION.PtrRawData] |
||
2288 | clevermous | 751 | test esi, esi |
752 | jnz .copy |
||
2384 | hidnplayr | 753 | add edi, [eax+COFF_SECTION.SizeOfRawData] |
2288 | clevermous | 754 | jmp .next |
755 | .copy: |
||
756 | add esi, edx |
||
2384 | hidnplayr | 757 | mov ecx, [eax+COFF_SECTION.SizeOfRawData] |
2288 | clevermous | 758 | cld |
759 | rep movsb |
||
760 | .next: |
||
761 | add edi, 15 |
||
762 | and edi, not 15 |
||
2384 | hidnplayr | 763 | add eax, sizeof.COFF_SECTION |
2288 | clevermous | 764 | dec ebx |
765 | jnz @B |
||
766 | |||
2384 | hidnplayr | 767 | mov ebx, [edx+COFF_HEADER.pSymTable] |
2288 | clevermous | 768 | add ebx, edx |
769 | mov [sym], ebx |
||
2384 | hidnplayr | 770 | mov ecx, [edx+COFF_HEADER.nSymbols] |
2288 | clevermous | 771 | add ecx, ecx |
772 | lea ecx, [ecx+ecx*8];ecx*=18 = nSymbols*CSYM_SIZE |
||
773 | add ecx, [sym] |
||
774 | mov [strings], ecx |
||
775 | |||
776 | lea ebx, [exports] |
||
777 | mov dword [ebx], kernel_export |
||
778 | mov dword [ebx+4], 0 |
||
779 | lea eax, [edx+20] |
||
780 | |||
2384 | hidnplayr | 781 | stdcall fix_coff_symbols, eax, [sym], [edx+COFF_HEADER.nSymbols], \ |
2288 | clevermous | 782 | [strings], ebx |
783 | test eax, eax |
||
784 | jz .link_fail |
||
785 | |||
786 | mov ebx, [coff] |
||
787 | stdcall fix_coff_relocs, ebx, [sym], 0 |
||
788 | |||
2384 | hidnplayr | 789 | stdcall get_coff_sym, [sym], [ebx+COFF_HEADER.nSymbols], szVersion |
2288 | clevermous | 790 | test eax, eax |
791 | jz .link_fail |
||
792 | |||
793 | mov eax, [eax] |
||
794 | shr eax, 16 |
||
795 | cmp eax, DRV_COMPAT |
||
796 | jb .ver_fail |
||
797 | |||
798 | cmp eax, DRV_CURRENT |
||
799 | ja .ver_fail |
||
800 | |||
801 | mov ebx, [coff] |
||
2384 | hidnplayr | 802 | stdcall get_coff_sym, [sym], [ebx+COFF_HEADER.nSymbols], szSTART |
2288 | clevermous | 803 | mov [start], eax |
804 | |||
805 | stdcall kernel_free, [coff] |
||
806 | |||
807 | mov ebx, [start] |
||
808 | stdcall ebx, DRV_ENTRY |
||
809 | test eax, eax |
||
810 | jnz .ok |
||
811 | |||
812 | stdcall kernel_free, [img_base] |
||
3171 | hidnplayr | 813 | |
2288 | clevermous | 814 | xor eax, eax |
815 | ret |
||
816 | .ok: |
||
817 | mov ebx, [img_base] |
||
818 | mov [eax+SRV.base], ebx |
||
819 | mov ecx, [start] |
||
820 | mov [eax+SRV.entry], ecx |
||
821 | ret |
||
822 | |||
823 | .ver_fail: |
||
824 | mov esi, msg_CR |
||
825 | call sys_msg_board_str |
||
826 | mov esi, [driver_name] |
||
827 | call sys_msg_board_str |
||
828 | mov esi, msg_CR |
||
829 | call sys_msg_board_str |
||
830 | mov esi, msg_version |
||
831 | call sys_msg_board_str |
||
832 | mov esi, msg_www |
||
833 | call sys_msg_board_str |
||
834 | jmp .cleanup |
||
835 | |||
836 | .link_fail: |
||
837 | mov esi, msg_module |
||
838 | call sys_msg_board_str |
||
839 | mov esi, [driver_name] |
||
840 | call sys_msg_board_str |
||
841 | mov esi, msg_CR |
||
842 | call sys_msg_board_str |
||
843 | .cleanup: |
||
844 | stdcall kernel_free, [img_base] |
||
845 | .fail: |
||
846 | stdcall kernel_free, [coff] |
||
847 | .exit: |
||
848 | xor eax, eax |
||
849 | ret |
||
850 | endp |
||
851 | |||
852 | ; in: edx -> COFF_SECTION struct |
||
853 | ; out: eax = alignment as mask for bits to drop |
||
854 | coff_get_align: |
||
855 | ; Rules: |
||
856 | ; - if alignment is not given, use default = 4K; |
||
857 | ; - if alignment is given and is no more than 4K, use it; |
||
858 | ; - if alignment is more than 4K, revert to 4K. |
||
859 | push ecx |
||
2384 | hidnplayr | 860 | mov cl, byte [edx+COFF_SECTION.Characteristics+2] |
2288 | clevermous | 861 | mov eax, 1 |
862 | shr cl, 4 |
||
863 | dec cl |
||
864 | js .default |
||
865 | cmp cl, 12 |
||
866 | jbe @f |
||
867 | .default: |
||
868 | mov cl, 12 |
||
869 | @@: |
||
870 | shl eax, cl |
||
871 | pop ecx |
||
872 | dec eax |
||
873 | ret |
||
874 | |||
875 | align 4 |
||
876 | proc load_library stdcall, file_name:dword |
||
877 | locals |
||
878 | fullname rb 260 |
||
879 | fileinfo rb 40 |
||
880 | coff dd ? |
||
881 | img_base dd ? |
||
882 | endl |
||
883 | |||
884 | cli |
||
885 | |||
886 | ; resolve file name |
||
887 | mov ebx, [file_name] |
||
888 | lea edi, [fullname+1] |
||
889 | mov byte [edi-1], '/' |
||
890 | stdcall get_full_file_name, edi, 259 |
||
891 | test al, al |
||
892 | jz .fail |
||
893 | |||
894 | ; scan for required DLL in list of already loaded for this process, |
||
895 | ; ignore timestamp |
||
896 | mov esi, [CURRENT_TASK] |
||
897 | shl esi, 8 |
||
898 | lea edi, [fullname] |
||
899 | mov ebx, [esi+SLOT_BASE+APPDATA.dlls_list_ptr] |
||
900 | test ebx, ebx |
||
901 | jz .not_in_process |
||
902 | mov esi, [ebx+HDLL.fd] |
||
903 | .scan_in_process: |
||
904 | cmp esi, ebx |
||
905 | jz .not_in_process |
||
906 | mov eax, [esi+HDLL.parent] |
||
907 | add eax, DLLDESCR.name |
||
908 | stdcall strncmp, eax, edi, -1 |
||
909 | test eax, eax |
||
910 | jnz .next_in_process |
||
911 | ; simple variant: load DLL which is already loaded in this process |
||
912 | ; just increment reference counters and return address of exports table |
||
913 | inc [esi+HDLL.refcount] |
||
914 | mov ecx, [esi+HDLL.parent] |
||
915 | inc [ecx+DLLDESCR.refcount] |
||
916 | mov eax, [ecx+DLLDESCR.exports] |
||
917 | sub eax, [ecx+DLLDESCR.defaultbase] |
||
918 | add eax, [esi+HDLL.base] |
||
919 | ret |
||
920 | .next_in_process: |
||
921 | mov esi, [esi+HDLL.fd] |
||
922 | jmp .scan_in_process |
||
923 | .not_in_process: |
||
924 | |||
925 | ; scan in full list, compare timestamp |
||
926 | lea eax, [fileinfo] |
||
927 | stdcall get_fileinfo, edi, eax |
||
928 | test eax, eax |
||
929 | jnz .fail |
||
930 | mov esi, [dll_list.fd] |
||
931 | .scan_for_dlls: |
||
932 | cmp esi, dll_list |
||
933 | jz .load_new |
||
934 | lea eax, [esi+DLLDESCR.name] |
||
935 | stdcall strncmp, eax, edi, -1 |
||
936 | test eax, eax |
||
937 | jnz .continue_scan |
||
938 | .test_prev_dll: |
||
939 | mov eax, dword [fileinfo+24]; last modified time |
||
940 | mov edx, dword [fileinfo+28]; last modified date |
||
941 | cmp dword [esi+DLLDESCR.timestamp], eax |
||
942 | jnz .continue_scan |
||
943 | cmp dword [esi+DLLDESCR.timestamp+4], edx |
||
944 | jz .dll_already_loaded |
||
945 | .continue_scan: |
||
946 | mov esi, [esi+DLLDESCR.fd] |
||
947 | jmp .scan_for_dlls |
||
948 | |||
949 | ; new DLL |
||
950 | .load_new: |
||
951 | ; load file |
||
952 | stdcall load_file, edi |
||
953 | test eax, eax |
||
954 | jz .fail |
||
955 | mov [coff], eax |
||
956 | mov dword [fileinfo+32], ebx |
||
957 | |||
958 | ; allocate DLLDESCR struct; size is DLLDESCR.sizeof plus size of DLL name |
||
959 | mov esi, edi |
||
960 | mov ecx, -1 |
||
961 | xor eax, eax |
||
962 | repnz scasb |
||
963 | not ecx |
||
2384 | hidnplayr | 964 | lea eax, [ecx+sizeof.DLLDESCR] |
2288 | clevermous | 965 | push ecx |
966 | call malloc |
||
967 | pop ecx |
||
968 | test eax, eax |
||
969 | jz .fail_and_free_coff |
||
970 | ; save timestamp |
||
971 | lea edi, [eax+DLLDESCR.name] |
||
972 | rep movsb |
||
973 | mov esi, eax |
||
974 | mov eax, dword [fileinfo+24] |
||
975 | mov dword [esi+DLLDESCR.timestamp], eax |
||
976 | mov eax, dword [fileinfo+28] |
||
977 | mov dword [esi+DLLDESCR.timestamp+4], eax |
||
978 | ; initialize DLLDESCR struct |
||
979 | and dword [esi+DLLDESCR.refcount], 0; no HDLLs yet; later it will be incremented |
||
980 | mov [esi+DLLDESCR.fd], dll_list |
||
981 | mov eax, [dll_list.bk] |
||
982 | mov [dll_list.bk], esi |
||
983 | mov [esi+DLLDESCR.bk], eax |
||
984 | mov [eax+DLLDESCR.fd], esi |
||
985 | |||
986 | ; calculate size of loaded DLL |
||
987 | mov edx, [coff] |
||
2384 | hidnplayr | 988 | movzx ecx, [edx+COFF_HEADER.nSections] |
2288 | clevermous | 989 | xor ebx, ebx |
990 | |||
991 | add edx, 20 |
||
992 | @@: |
||
993 | call coff_get_align |
||
994 | add ebx, eax |
||
995 | not eax |
||
996 | and ebx, eax |
||
2384 | hidnplayr | 997 | add ebx, [edx+COFF_SECTION.SizeOfRawData] |
998 | add edx, sizeof.COFF_SECTION |
||
2288 | clevermous | 999 | dec ecx |
1000 | jnz @B |
||
1001 | ; it must be nonzero and not too big |
||
1002 | mov [esi+DLLDESCR.size], ebx |
||
1003 | test ebx, ebx |
||
1004 | jz .fail_and_free_dll |
||
1005 | cmp ebx, MAX_DEFAULT_DLL_ADDR-MIN_DEFAULT_DLL_ADDR |
||
1006 | ja .fail_and_free_dll |
||
1007 | ; allocate memory for kernel-side image |
||
1008 | stdcall kernel_alloc, ebx |
||
1009 | test eax, eax |
||
1010 | jz .fail_and_free_dll |
||
1011 | mov [esi+DLLDESCR.data], eax |
||
1012 | ; calculate preferred base address |
||
1013 | add ebx, 0x1FFF |
||
1014 | and ebx, not 0xFFF |
||
1015 | mov ecx, [dll_cur_addr] |
||
1016 | lea edx, [ecx+ebx] |
||
1017 | cmp edx, MAX_DEFAULT_DLL_ADDR |
||
1018 | jb @f |
||
1019 | mov ecx, MIN_DEFAULT_DLL_ADDR |
||
1020 | lea edx, [ecx+ebx] |
||
1021 | @@: |
||
1022 | mov [esi+DLLDESCR.defaultbase], ecx |
||
1023 | mov [dll_cur_addr], edx |
||
1024 | |||
1025 | ; copy sections and set correct values for VirtualAddress'es in headers |
||
1026 | push esi |
||
1027 | mov edx, [coff] |
||
2384 | hidnplayr | 1028 | movzx ebx, [edx+COFF_HEADER.nSections] |
2288 | clevermous | 1029 | mov edi, eax |
1030 | add edx, 20 |
||
1031 | cld |
||
1032 | @@: |
||
1033 | call coff_get_align |
||
1034 | add ecx, eax |
||
1035 | add edi, eax |
||
1036 | not eax |
||
1037 | and ecx, eax |
||
1038 | and edi, eax |
||
2384 | hidnplayr | 1039 | mov [edx+COFF_SECTION.VirtualAddress], ecx |
1040 | add ecx, [edx+COFF_SECTION.SizeOfRawData] |
||
1041 | mov esi, [edx+COFF_SECTION.PtrRawData] |
||
2288 | clevermous | 1042 | push ecx |
2384 | hidnplayr | 1043 | mov ecx, [edx+COFF_SECTION.SizeOfRawData] |
2288 | clevermous | 1044 | test esi, esi |
1045 | jnz .copy |
||
1046 | xor eax, eax |
||
1047 | rep stosb |
||
1048 | jmp .next |
||
1049 | .copy: |
||
1050 | add esi, [coff] |
||
1051 | rep movsb |
||
1052 | .next: |
||
1053 | pop ecx |
||
2384 | hidnplayr | 1054 | add edx, sizeof.COFF_SECTION |
2288 | clevermous | 1055 | dec ebx |
1056 | jnz @B |
||
1057 | pop esi |
||
1058 | |||
1059 | ; save some additional data from COFF file |
||
1060 | ; later we will use COFF header, headers for sections and symbol table |
||
1061 | ; and also relocations table for all sections |
||
1062 | mov edx, [coff] |
||
2384 | hidnplayr | 1063 | mov ebx, [edx+COFF_HEADER.pSymTable] |
2288 | clevermous | 1064 | mov edi, dword [fileinfo+32] |
1065 | sub edi, ebx |
||
1066 | jc .fail_and_free_data |
||
1067 | mov [esi+DLLDESCR.symbols_lim], edi |
||
1068 | add ebx, edx |
||
2384 | hidnplayr | 1069 | movzx ecx, [edx+COFF_HEADER.nSections] |
2288 | clevermous | 1070 | lea ecx, [ecx*5] |
1071 | lea edi, [edi+ecx*8+20] |
||
1072 | add edx, 20 |
||
1073 | @@: |
||
2384 | hidnplayr | 1074 | movzx eax, [edx+COFF_SECTION.NumReloc] |
2288 | clevermous | 1075 | lea eax, [eax*5] |
1076 | lea edi, [edi+eax*2] |
||
2384 | hidnplayr | 1077 | add edx, sizeof.COFF_SECTION |
2288 | clevermous | 1078 | sub ecx, 5 |
1079 | jnz @b |
||
1080 | stdcall kernel_alloc, edi |
||
1081 | test eax, eax |
||
1082 | jz .fail_and_free_data |
||
1083 | mov edx, [coff] |
||
2384 | hidnplayr | 1084 | movzx ecx, [edx+COFF_HEADER.nSections] |
2288 | clevermous | 1085 | lea ecx, [ecx*5] |
1086 | lea ecx, [ecx*2+5] |
||
1087 | mov [esi+DLLDESCR.coff_hdr], eax |
||
1088 | push esi |
||
1089 | mov esi, edx |
||
1090 | mov edi, eax |
||
1091 | rep movsd |
||
1092 | pop esi |
||
1093 | mov [esi+DLLDESCR.symbols_ptr], edi |
||
1094 | push esi |
||
2384 | hidnplayr | 1095 | mov ecx, [edx+COFF_HEADER.nSymbols] |
2288 | clevermous | 1096 | mov [esi+DLLDESCR.symbols_num], ecx |
1097 | mov ecx, [esi+DLLDESCR.symbols_lim] |
||
1098 | mov esi, ebx |
||
1099 | rep movsb |
||
1100 | pop esi |
||
1101 | mov ebx, [esi+DLLDESCR.coff_hdr] |
||
1102 | push esi |
||
2384 | hidnplayr | 1103 | movzx eax, [edx+COFF_HEADER.nSections] |
2288 | clevermous | 1104 | lea edx, [ebx+20] |
1105 | @@: |
||
2384 | hidnplayr | 1106 | movzx ecx, [edx+COFF_SECTION.NumReloc] |
2288 | clevermous | 1107 | lea ecx, [ecx*5] |
2384 | hidnplayr | 1108 | mov esi, [edx+COFF_SECTION.PtrReloc] |
1109 | mov [edx+COFF_SECTION.PtrReloc], edi |
||
1110 | sub [edx+COFF_SECTION.PtrReloc], ebx |
||
2288 | clevermous | 1111 | add esi, [coff] |
1112 | shr ecx, 1 |
||
1113 | rep movsd |
||
1114 | adc ecx, ecx |
||
1115 | rep movsw |
||
2384 | hidnplayr | 1116 | add edx, sizeof.COFF_SECTION |
2288 | clevermous | 1117 | dec eax |
1118 | jnz @b |
||
1119 | pop esi |
||
1120 | |||
1121 | ; fixup symbols |
||
1122 | mov edx, ebx |
||
2384 | hidnplayr | 1123 | mov eax, [ebx+COFF_HEADER.nSymbols] |
2288 | clevermous | 1124 | add edx, 20 |
1125 | mov ecx, [esi+DLLDESCR.symbols_num] |
||
1126 | lea ecx, [ecx*9] |
||
1127 | add ecx, ecx |
||
1128 | add ecx, [esi+DLLDESCR.symbols_ptr] |
||
1129 | |||
1130 | stdcall fix_coff_symbols, edx, [esi+DLLDESCR.symbols_ptr], eax, \ |
||
1131 | ecx, 0 |
||
1132 | ; test eax, eax |
||
1133 | ; jnz @F |
||
1134 | ; |
||
1135 | ;@@: |
||
1136 | |||
2384 | hidnplayr | 1137 | stdcall get_coff_sym, [esi+DLLDESCR.symbols_ptr], [ebx+COFF_HEADER.nSymbols], szEXPORTS |
2288 | clevermous | 1138 | test eax, eax |
1139 | jnz @F |
||
1140 | |||
2384 | hidnplayr | 1141 | stdcall get_coff_sym, [esi+DLLDESCR.symbols_ptr], [ebx+COFF_HEADER.nSymbols], sz_EXPORTS |
2288 | clevermous | 1142 | @@: |
1143 | mov [esi+DLLDESCR.exports], eax |
||
1144 | |||
1145 | ; fix relocs in the hidden copy in kernel memory to default address |
||
1146 | ; it is first fix; usually this will be enough, but second fix |
||
1147 | ; can be necessary if real load address will not equal assumption |
||
1148 | mov eax, [esi+DLLDESCR.data] |
||
1149 | sub eax, [esi+DLLDESCR.defaultbase] |
||
1150 | stdcall fix_coff_relocs, ebx, [esi+DLLDESCR.symbols_ptr], eax |
||
1151 | |||
1152 | stdcall kernel_free, [coff] |
||
1153 | |||
1154 | .dll_already_loaded: |
||
1155 | inc [esi+DLLDESCR.refcount] |
||
1156 | push esi |
||
1157 | call init_heap |
||
1158 | pop esi |
||
1159 | |||
1160 | mov edi, [esi+DLLDESCR.size] |
||
1161 | stdcall user_alloc_at, [esi+DLLDESCR.defaultbase], edi |
||
1162 | test eax, eax |
||
1163 | jnz @f |
||
1164 | stdcall user_alloc, edi |
||
1165 | test eax, eax |
||
1166 | jz .fail_and_dereference |
||
1167 | @@: |
||
1168 | mov [img_base], eax |
||
2384 | hidnplayr | 1169 | mov eax, sizeof.HDLL |
2288 | clevermous | 1170 | call malloc |
1171 | test eax, eax |
||
1172 | jz .fail_and_free_user |
||
1173 | mov ebx, [CURRENT_TASK] |
||
1174 | shl ebx, 5 |
||
1175 | mov edx, [CURRENT_TASK+ebx+TASKDATA.pid] |
||
1176 | mov [eax+HDLL.pid], edx |
||
1177 | push eax |
||
1178 | call init_dlls_in_thread |
||
1179 | pop ebx |
||
1180 | test eax, eax |
||
1181 | jz .fail_and_free_user |
||
1182 | mov edx, [eax+HDLL.fd] |
||
1183 | mov [ebx+HDLL.fd], edx |
||
1184 | mov [ebx+HDLL.bk], eax |
||
1185 | mov [eax+HDLL.fd], ebx |
||
1186 | mov [edx+HDLL.bk], ebx |
||
1187 | mov eax, ebx |
||
1188 | mov ebx, [img_base] |
||
1189 | mov [eax+HDLL.base], ebx |
||
1190 | mov [eax+HDLL.size], edi |
||
1191 | mov [eax+HDLL.refcount], 1 |
||
1192 | mov [eax+HDLL.parent], esi |
||
1193 | mov edx, ebx |
||
1194 | shr edx, 12 |
||
1195 | or dword [page_tabs+(edx-1)*4], DONT_FREE_BLOCK |
||
1196 | ; copy entries of page table from kernel-side image to usermode |
||
1197 | ; use copy-on-write for user-mode image, so map as readonly |
||
1198 | xor edi, edi |
||
1199 | mov ecx, [esi+DLLDESCR.data] |
||
1200 | shr ecx, 12 |
||
1201 | .map_pages_loop: |
||
1202 | mov eax, [page_tabs+ecx*4] |
||
1203 | and eax, not 0xFFF |
||
1204 | or al, PG_USER |
||
1205 | xchg eax, [page_tabs+edx*4] |
||
1206 | test al, 1 |
||
1207 | jz @f |
||
1208 | call free_page |
||
1209 | @@: |
||
1210 | invlpg [ebx+edi] |
||
1211 | inc ecx |
||
1212 | inc edx |
||
1213 | add edi, 0x1000 |
||
1214 | cmp edi, [esi+DLLDESCR.size] |
||
1215 | jb .map_pages_loop |
||
1216 | |||
1217 | ; if real user-mode base is not equal to preferred base, relocate image |
||
1218 | sub ebx, [esi+DLLDESCR.defaultbase] |
||
1219 | jz @f |
||
1220 | stdcall rebase_coff, [esi+DLLDESCR.coff_hdr], [esi+DLLDESCR.symbols_ptr], ebx |
||
1221 | @@: |
||
1222 | |||
1223 | mov eax, [esi+DLLDESCR.exports] |
||
1224 | sub eax, [esi+DLLDESCR.defaultbase] |
||
1225 | add eax, [img_base] |
||
1226 | ret |
||
1227 | .fail_and_free_data: |
||
1228 | stdcall kernel_free, [esi+DLLDESCR.data] |
||
1229 | .fail_and_free_dll: |
||
1230 | mov eax, esi |
||
1231 | call free |
||
1232 | .fail_and_free_coff: |
||
1233 | stdcall kernel_free, [coff] |
||
1234 | .fail: |
||
1235 | xor eax, eax |
||
1236 | ret |
||
1237 | .fail_and_free_user: |
||
1238 | stdcall user_free, [img_base] |
||
1239 | .fail_and_dereference: |
||
1240 | mov eax, 1 ; delete 1 reference |
||
1241 | call dereference_dll |
||
1242 | xor eax, eax |
||
1243 | ret |
||
1244 | endp |
||
1245 | |||
1246 | ; initialize [APPDATA.dlls_list_ptr] for given thread |
||
1247 | ; DLL is per-process object, so APPDATA.dlls_list_ptr must be |
||
1248 | ; kept in sync for all threads of one process. |
||
1249 | ; out: eax = APPDATA.dlls_list_ptr if all is OK, |
||
1250 | ; NULL if memory allocation failed |
||
1251 | init_dlls_in_thread: |
||
1252 | mov ebx, [current_slot] |
||
1253 | mov eax, [ebx+APPDATA.dlls_list_ptr] |
||
1254 | test eax, eax |
||
1255 | jnz .ret |
||
1256 | push [ebx+APPDATA.dir_table] |
||
1257 | mov eax, 8 |
||
1258 | call malloc |
||
1259 | pop edx |
||
1260 | test eax, eax |
||
1261 | jz .ret |
||
1262 | mov [eax], eax |
||
1263 | mov [eax+4], eax |
||
1264 | mov ecx, [TASK_COUNT] |
||
1265 | mov ebx, SLOT_BASE+256 |
||
1266 | .set: |
||
1267 | cmp [ebx+APPDATA.dir_table], edx |
||
1268 | jnz @f |
||
1269 | mov [ebx+APPDATA.dlls_list_ptr], eax |
||
1270 | @@: |
||
1271 | add ebx, 256 |
||
1272 | dec ecx |
||
1273 | jnz .set |
||
1274 | .ret: |
||
1275 | ret |
||
1276 | |||
1277 | ; in: eax = number of references to delete, esi -> DLLDESCR struc |
||
1278 | dereference_dll: |
||
1279 | sub [esi+DLLDESCR.refcount], eax |
||
1280 | jnz .ret |
||
1281 | mov eax, [esi+DLLDESCR.fd] |
||
1282 | mov edx, [esi+DLLDESCR.bk] |
||
1283 | mov [eax+DLLDESCR.bk], edx |
||
1284 | mov [edx+DLLDESCR.fd], eax |
||
1285 | stdcall kernel_free, [esi+DLLDESCR.coff_hdr] |
||
1286 | stdcall kernel_free, [esi+DLLDESCR.data] |
||
1287 | mov eax, esi |
||
1288 | call free |
||
1289 | .ret: |
||
1290 | ret |
||
1291 | |||
1292 | destroy_hdll: |
||
1293 | push ebx ecx esi edi |
||
1294 | push eax |
||
1295 | mov ebx, [eax+HDLL.base] |
||
1296 | mov esi, [eax+HDLL.parent] |
||
1297 | mov edx, [esi+DLLDESCR.size] |
||
1298 | ; The following actions require the context of application where HDLL is mapped. |
||
1299 | ; However, destroy_hdll can be called in the context of OS thread when |
||
1300 | ; cleaning up objects created by the application which is destroyed. |
||
1301 | ; So remember current cr3 and set it to page table of target. |
||
1302 | mov eax, [ecx+APPDATA.dir_table] |
||
1303 | ; Because we cheat with cr3, disable interrupts: task switch would restore |
||
1304 | ; page table from APPDATA of current thread. |
||
1305 | ; Also set [current_slot] because it is used by user_free. |
||
1306 | pushf |
||
1307 | cli |
||
1308 | push [current_slot] |
||
1309 | mov [current_slot], ecx |
||
1310 | mov ecx, cr3 |
||
1311 | push ecx |
||
1312 | mov cr3, eax |
||
1313 | push ebx ; argument for user_free |
||
1314 | mov eax, ebx |
||
1315 | shr ebx, 12 |
||
1316 | push ebx |
||
1317 | mov esi, [esi+DLLDESCR.data] |
||
1318 | shr esi, 12 |
||
1319 | .unmap_loop: |
||
1320 | push eax |
||
1321 | mov eax, 2 |
||
1322 | xchg eax, [page_tabs+ebx*4] |
||
1323 | mov ecx, [page_tabs+esi*4] |
||
1324 | and eax, not 0xFFF |
||
1325 | and ecx, not 0xFFF |
||
1326 | cmp eax, ecx |
||
1327 | jz @f |
||
1328 | call free_page |
||
1329 | @@: |
||
1330 | pop eax |
||
1331 | invlpg [eax] |
||
1332 | add eax, 0x1000 |
||
1333 | inc ebx |
||
1334 | inc esi |
||
1335 | sub edx, 0x1000 |
||
1336 | ja .unmap_loop |
||
1337 | pop ebx |
||
1338 | and dword [page_tabs+(ebx-1)*4], not DONT_FREE_BLOCK |
||
1339 | call user_free |
||
1340 | ; Restore context. |
||
1341 | pop eax |
||
1342 | mov cr3, eax |
||
1343 | pop [current_slot] |
||
1344 | popf |
||
1345 | ; Ok, cheating is done. |
||
1346 | pop eax |
||
1347 | push eax |
||
1348 | mov esi, [eax+HDLL.parent] |
||
1349 | mov eax, [eax+HDLL.refcount] |
||
1350 | call dereference_dll |
||
1351 | pop eax |
||
1352 | mov edx, [eax+HDLL.bk] |
||
1353 | mov ebx, [eax+HDLL.fd] |
||
1354 | mov [ebx+HDLL.bk], edx |
||
1355 | mov [edx+HDLL.fd], ebx |
||
1356 | call free |
||
1357 | pop edi esi ecx ebx |
||
1358 | ret |
||
1359 | |||
1360 | ; ecx -> APPDATA for slot, esi = dlls_list_ptr |
||
1361 | destroy_all_hdlls: |
||
1362 | test esi, esi |
||
1363 | jz .ret |
||
1364 | .loop: |
||
1365 | mov eax, [esi+HDLL.fd] |
||
1366 | cmp eax, esi |
||
1367 | jz free |
||
1368 | call destroy_hdll |
||
1369 | jmp .loop |
||
1370 | .ret: |
||
1371 | ret |
||
1372 | |||
1373 | align 4 |
||
1374 | stop_all_services: |
||
1375 | push ebp |
||
1376 | mov edx, [srv.fd] |
||
1377 | .next: |
||
2384 | hidnplayr | 1378 | cmp edx, srv.fd-SRV.fd |
2288 | clevermous | 1379 | je .done |
1380 | cmp [edx+SRV.magic], ' SRV' |
||
1381 | jne .next |
||
2384 | hidnplayr | 1382 | cmp [edx+SRV.size], sizeof.SRV |
2288 | clevermous | 1383 | jne .next |
1384 | |||
1385 | mov ebx, [edx+SRV.entry] |
||
1386 | mov edx, [edx+SRV.fd] |
||
1387 | test ebx, ebx |
||
1388 | jz .next |
||
1389 | |||
1390 | push edx |
||
1391 | mov ebp, esp |
||
1392 | push 0 |
||
1393 | push -1 |
||
1394 | call ebx |
||
1395 | mov esp, ebp |
||
1396 | pop edx |
||
1397 | jmp .next |
||
1398 | .done: |
||
1399 | pop ebp |
||
1400 | ret |
||
1401 | |||
1402 | ; param |
||
1403 | ; eax= size |
||
1404 | ; ebx= pid |
||
1405 | |||
1406 | align 4 |
||
1407 | create_kernel_object: |
||
1408 | |||
1409 | push ebx |
||
1410 | call malloc |
||
1411 | pop ebx |
||
1412 | test eax, eax |
||
1413 | jz .fail |
||
1414 | |||
1415 | mov ecx, [current_slot] |
||
1416 | add ecx, APP_OBJ_OFFSET |
||
1417 | |||
1418 | pushfd |
||
1419 | cli |
||
1420 | mov edx, [ecx+APPOBJ.fd] |
||
1421 | mov [eax+APPOBJ.fd], edx |
||
1422 | mov [eax+APPOBJ.bk], ecx |
||
1423 | mov [eax+APPOBJ.pid], ebx |
||
1424 | |||
1425 | mov [ecx+APPOBJ.fd], eax |
||
1426 | mov [edx+APPOBJ.bk], eax |
||
1427 | popfd |
||
1428 | .fail: |
||
1429 | ret |
||
1430 | |||
1431 | ; param |
||
1432 | ; eax= object |
||
1433 | |||
1434 | align 4 |
||
1435 | destroy_kernel_object: |
||
1436 | |||
1437 | pushfd |
||
1438 | cli |
||
1439 | mov ebx, [eax+APPOBJ.fd] |
||
1440 | mov ecx, [eax+APPOBJ.bk] |
||
1441 | mov [ebx+APPOBJ.bk], ecx |
||
1442 | mov [ecx+APPOBJ.fd], ebx |
||
1443 | popfd |
||
1444 | |||
1445 | xor edx, edx ;clear common header |
||
1446 | mov [eax], edx |
||
1447 | mov [eax+4], edx |
||
1448 | mov [eax+8], edx |
||
1449 | mov [eax+12], edx |
||
1450 | mov [eax+16], edx |
||
1451 | |||
1452 | call free ;release object memory |
||
1453 | ret |