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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: 3520 $ |
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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 | |||
3520 | clevermous | 145 | ; stdcall [edi+SRV.srv_proc], esi |
146 | mov eax, [edi+SRV.srv_proc] |
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147 | test eax, eax |
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148 | jz .fail |
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149 | stdcall eax, esi |
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2288 | clevermous | 150 | ret |
151 | .fail: |
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152 | xor eax, eax |
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153 | not eax |
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154 | mov [esi+output], eax |
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155 | mov [esi+out_size], 4 |
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156 | ret |
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157 | .err: |
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158 | xor eax, eax |
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159 | not eax |
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160 | ret |
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161 | endp |
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162 | |||
163 | ; param |
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164 | ; ecx= io_control |
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165 | ; |
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166 | ; retval |
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167 | ; eax= error code |
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168 | |||
169 | align 4 |
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170 | srv_handlerEx: |
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171 | cmp ecx, OS_BASE |
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172 | jae .fail |
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173 | |||
174 | mov eax, [ecx+handle] |
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175 | cmp [eax+SRV.magic], ' SRV' |
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176 | jne .fail |
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177 | |||
2384 | hidnplayr | 178 | cmp [eax+SRV.size], sizeof.SRV |
2288 | clevermous | 179 | jne .fail |
180 | |||
3520 | clevermous | 181 | ; stdcall [eax+SRV.srv_proc], ecx |
182 | mov eax, [eax+SRV.srv_proc] |
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183 | test eax, eax |
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184 | jz .fail |
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185 | stdcall eax, ecx |
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2288 | clevermous | 186 | ret |
187 | .fail: |
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188 | or eax, -1 |
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189 | ret |
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190 | |||
191 | restore handle |
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192 | restore io_code |
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193 | restore input |
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194 | restore inp_size |
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195 | restore output |
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196 | restore out_size |
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197 | |||
198 | align 4 |
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199 | proc get_service stdcall, sz_name:dword |
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200 | mov eax, [sz_name] |
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201 | test eax, eax |
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202 | jnz @F |
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203 | ret |
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204 | @@: |
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205 | mov edx, [srv.fd] |
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206 | @@: |
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2384 | hidnplayr | 207 | cmp edx, srv.fd-SRV.fd |
2288 | clevermous | 208 | je .not_load |
209 | |||
210 | stdcall strncmp, edx, [sz_name], 16 |
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211 | test eax, eax |
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212 | je .ok |
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213 | |||
214 | mov edx, [edx+SRV.fd] |
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215 | jmp @B |
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216 | .not_load: |
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217 | pop ebp |
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218 | jmp load_driver |
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219 | .ok: |
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220 | mov eax, edx |
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221 | ret |
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222 | endp |
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223 | |||
3520 | clevermous | 224 | reg_service: |
225 | xor eax, eax |
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226 | mov ecx, [esp+8] |
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227 | jecxz .nothing |
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228 | push sizeof.SRV |
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229 | push ecx |
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230 | pushd [esp+12] |
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231 | call reg_service_ex |
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232 | .nothing: |
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233 | ret 8 |
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2288 | clevermous | 234 | |
3520 | clevermous | 235 | reg_usb_driver: |
236 | push sizeof.USBSRV |
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237 | pushd [esp+12] |
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238 | pushd [esp+12] |
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239 | call reg_service_ex |
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240 | test eax, eax |
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241 | jz .nothing |
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242 | mov ecx, [esp+12] |
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243 | mov [eax+USBSRV.usb_func], ecx |
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244 | .nothing: |
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245 | ret 12 |
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246 | |||
247 | proc reg_service_ex stdcall, name:dword, handler:dword, srvsize:dword |
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248 | |||
2288 | clevermous | 249 | push ebx |
250 | |||
251 | xor eax, eax |
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252 | |||
253 | cmp [name], eax |
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254 | je .fail |
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255 | |||
3520 | clevermous | 256 | ; cmp [handler], eax |
257 | ; je .fail |
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2288 | clevermous | 258 | |
3520 | clevermous | 259 | mov eax, [srvsize] |
2288 | clevermous | 260 | call malloc |
261 | test eax, eax |
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262 | jz .fail |
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263 | |||
264 | push esi |
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265 | push edi |
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266 | mov edi, eax |
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267 | mov esi, [name] |
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268 | movsd |
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269 | movsd |
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270 | movsd |
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271 | movsd |
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272 | pop edi |
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273 | pop esi |
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274 | |||
275 | mov [eax+SRV.magic], ' SRV' |
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2384 | hidnplayr | 276 | mov [eax+SRV.size], sizeof.SRV |
2288 | clevermous | 277 | |
2384 | hidnplayr | 278 | mov ebx, srv.fd-SRV.fd |
2288 | clevermous | 279 | mov edx, [ebx+SRV.fd] |
280 | mov [eax+SRV.fd], edx |
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281 | mov [eax+SRV.bk], ebx |
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282 | mov [ebx+SRV.fd], eax |
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283 | mov [edx+SRV.bk], eax |
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284 | |||
285 | mov ecx, [handler] |
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286 | mov [eax+SRV.srv_proc], ecx |
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287 | pop ebx |
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288 | ret |
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289 | .fail: |
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290 | xor eax, eax |
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291 | pop ebx |
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292 | ret |
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293 | endp |
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294 | |||
295 | align 4 |
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296 | proc get_proc stdcall, exp:dword, sz_name:dword |
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297 | |||
298 | mov edx, [exp] |
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299 | .next: |
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300 | mov eax, [edx] |
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301 | test eax, eax |
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302 | jz .end |
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303 | |||
304 | push edx |
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305 | stdcall strncmp, eax, [sz_name], 16 |
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306 | pop edx |
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307 | test eax, eax |
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308 | jz .ok |
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309 | |||
310 | add edx, 8 |
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311 | jmp .next |
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312 | .ok: |
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313 | mov eax, [edx+4] |
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314 | .end: |
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315 | ret |
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316 | endp |
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317 | |||
318 | align 4 |
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319 | proc get_coff_sym stdcall, pSym:dword,count:dword, sz_sym:dword |
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320 | |||
321 | @@: |
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322 | stdcall strncmp, [pSym], [sz_sym], 8 |
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323 | test eax, eax |
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324 | jz .ok |
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325 | add [pSym], 18 |
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326 | dec [count] |
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327 | jnz @b |
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328 | xor eax, eax |
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329 | ret |
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330 | .ok: |
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331 | mov eax, [pSym] |
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332 | mov eax, [eax+8] |
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333 | ret |
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334 | endp |
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335 | |||
336 | align 4 |
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337 | proc get_curr_task |
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338 | mov eax, [CURRENT_TASK] |
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339 | shl eax, 8 |
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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 get_fileinfo stdcall, file_name:dword, info:dword |
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345 | locals |
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346 | cmd dd ? |
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347 | offset dd ? |
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348 | dd ? |
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349 | count dd ? |
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350 | buff dd ? |
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351 | db ? |
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352 | name dd ? |
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353 | endl |
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354 | |||
355 | xor eax, eax |
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356 | mov ebx, [file_name] |
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357 | mov ecx, [info] |
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358 | |||
359 | mov [cmd], 5 |
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360 | mov [offset], eax |
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361 | mov [offset+4], eax |
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362 | mov [count], eax |
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363 | mov [buff], ecx |
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364 | mov byte [buff+4], al |
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365 | mov [name], ebx |
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366 | |||
367 | mov eax, 70 |
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368 | lea ebx, [cmd] |
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369 | int 0x40 |
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370 | ret |
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371 | endp |
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372 | |||
373 | align 4 |
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374 | proc read_file stdcall,file_name:dword, buffer:dword, off:dword,\ |
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375 | bytes:dword |
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376 | locals |
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377 | cmd dd ? |
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378 | offset dd ? |
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379 | dd ? |
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380 | count dd ? |
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381 | buff dd ? |
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382 | db ? |
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383 | name dd ? |
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384 | endl |
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385 | |||
386 | xor eax, eax |
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387 | mov ebx, [file_name] |
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388 | mov ecx, [off] |
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389 | mov edx, [bytes] |
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390 | mov esi, [buffer] |
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391 | |||
392 | mov [cmd], eax |
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393 | mov [offset], ecx |
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394 | mov [offset+4], eax |
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395 | mov [count], edx |
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396 | mov [buff], esi |
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397 | mov byte [buff+4], al |
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398 | mov [name], ebx |
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399 | |||
400 | pushad |
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401 | lea ebx, [cmd] |
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3296 | clevermous | 402 | call file_system_lfn_protected |
2288 | clevermous | 403 | popad |
404 | ret |
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405 | endp |
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406 | |||
407 | ; description |
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408 | ; allocate kernel memory and loads the specified file |
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409 | ; |
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410 | ; param |
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411 | ; file_name= full path to file |
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412 | ; |
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413 | ; retval |
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414 | ; eax= file image in kernel memory |
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415 | ; ebx= size of file |
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416 | ; |
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417 | ; warging |
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418 | ; You mast call kernel_free() to delete each file |
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419 | ; loaded by the load_file() function |
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420 | |||
421 | align 4 |
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422 | proc load_file stdcall, file_name:dword |
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423 | locals |
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424 | attr dd ? |
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425 | flags dd ? |
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426 | cr_time dd ? |
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427 | cr_date dd ? |
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428 | acc_time dd ? |
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429 | acc_date dd ? |
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430 | mod_time dd ? |
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431 | mod_date dd ? |
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432 | file_size dd ? |
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433 | |||
434 | file dd ? |
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435 | file2 dd ? |
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436 | endl |
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437 | |||
438 | push esi |
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439 | push edi |
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440 | |||
441 | lea eax, [attr] |
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442 | stdcall get_fileinfo, [file_name], eax |
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443 | test eax, eax |
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444 | jnz .fail |
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445 | |||
446 | mov eax, [file_size] |
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447 | cmp eax, 1024*1024*16 |
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448 | ja .fail |
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449 | |||
450 | stdcall kernel_alloc, [file_size] |
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451 | mov [file], eax |
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452 | test eax, eax |
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453 | jz .fail |
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454 | |||
455 | stdcall read_file, [file_name], eax, dword 0, [file_size] |
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456 | cmp ebx, [file_size] |
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457 | jne .cleanup |
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458 | |||
459 | mov eax, [file] |
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460 | cmp dword [eax], 0x4B43504B |
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461 | jne .exit |
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462 | mov ebx, [eax+4] |
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463 | mov [file_size], ebx |
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464 | stdcall kernel_alloc, ebx |
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465 | |||
466 | test eax, eax |
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467 | jz .cleanup |
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468 | |||
469 | mov [file2], eax |
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2486 | mario79 | 470 | |
2500 | mario79 | 471 | pushad |
2489 | mario79 | 472 | mov ecx, unpack_mutex |
473 | call mutex_lock |
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2500 | mario79 | 474 | popad |
2486 | mario79 | 475 | |
2288 | clevermous | 476 | stdcall unpack, [file], eax |
2486 | mario79 | 477 | |
2500 | mario79 | 478 | pushad |
479 | mov ecx, unpack_mutex |
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2489 | mario79 | 480 | call mutex_unlock |
2500 | mario79 | 481 | popad |
2486 | mario79 | 482 | |
2288 | clevermous | 483 | stdcall kernel_free, [file] |
484 | mov eax, [file2] |
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485 | mov ebx, [file_size] |
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486 | .exit: |
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487 | push eax |
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488 | lea edi, [eax+ebx] ;cleanup remain space |
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489 | mov ecx, 4096 ;from file end |
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490 | and ebx, 4095 |
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491 | jz @f |
||
492 | sub ecx, ebx |
||
493 | xor eax, eax |
||
494 | cld |
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495 | rep stosb |
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496 | @@: |
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497 | mov ebx, [file_size] |
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498 | pop eax |
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499 | pop edi |
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500 | pop esi |
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501 | ret |
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502 | .cleanup: |
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503 | stdcall kernel_free, [file] |
||
504 | .fail: |
||
505 | xor eax, eax |
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506 | xor ebx, ebx |
||
507 | pop edi |
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508 | pop esi |
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509 | ret |
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510 | endp |
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511 | |||
2489 | mario79 | 512 | uglobal |
2288 | clevermous | 513 | align 4 |
2489 | mario79 | 514 | unpack_mutex MUTEX |
2486 | mario79 | 515 | endg |
516 | |||
517 | align 4 |
||
2288 | clevermous | 518 | proc get_proc_ex stdcall, proc_name:dword, imports:dword |
519 | |||
520 | .look_up: |
||
521 | mov edx, [imports] |
||
522 | test edx, edx |
||
523 | jz .end |
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524 | mov edx, [edx] |
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525 | test edx, edx |
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526 | jz .end |
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527 | .next: |
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528 | mov eax, [edx] |
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529 | test eax, eax |
||
530 | jz .next_table |
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531 | |||
532 | push edx |
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533 | stdcall strncmp, eax, [proc_name], 256 |
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534 | pop edx |
||
535 | test eax, eax |
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536 | jz .ok |
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537 | |||
538 | add edx, 8 |
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539 | jmp .next |
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540 | .next_table: |
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541 | add [imports], 4 |
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542 | jmp .look_up |
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543 | .ok: |
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544 | mov eax, [edx+4] |
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545 | ret |
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546 | .end: |
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547 | xor eax, eax |
||
548 | ret |
||
549 | endp |
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550 | |||
551 | align 4 |
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552 | proc fix_coff_symbols stdcall uses ebx esi, sec:dword, symbols:dword,\ |
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553 | sym_count:dword, strings:dword, imports:dword |
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554 | locals |
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555 | retval dd ? |
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556 | endl |
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557 | |||
558 | mov edi, [symbols] |
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559 | mov [retval], 1 |
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560 | .fix: |
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2384 | hidnplayr | 561 | movzx ebx, [edi+COFF_SYM.SectionNumber] |
2288 | clevermous | 562 | test ebx, ebx |
563 | jnz .internal |
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2384 | hidnplayr | 564 | mov eax, dword [edi+COFF_SYM.Name] |
2288 | clevermous | 565 | test eax, eax |
566 | jnz @F |
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567 | |||
568 | mov edi, [edi+4] |
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569 | add edi, [strings] |
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570 | @@: |
||
571 | push edi |
||
572 | stdcall get_proc_ex, edi, [imports] |
||
573 | pop edi |
||
574 | |||
575 | xor ebx, ebx |
||
576 | test eax, eax |
||
577 | jnz @F |
||
578 | |||
579 | mov esi, msg_unresolved |
||
580 | call sys_msg_board_str |
||
581 | mov esi, edi |
||
582 | call sys_msg_board_str |
||
583 | mov esi, msg_CR |
||
584 | call sys_msg_board_str |
||
585 | |||
586 | mov [retval], 0 |
||
587 | @@: |
||
588 | mov edi, [symbols] |
||
2384 | hidnplayr | 589 | mov [edi+COFF_SYM.Value], eax |
2288 | clevermous | 590 | jmp .next |
591 | .internal: |
||
592 | cmp bx, -1 |
||
593 | je .next |
||
594 | cmp bx, -2 |
||
595 | je .next |
||
596 | |||
597 | dec ebx |
||
598 | shl ebx, 3 |
||
599 | lea ebx, [ebx+ebx*4] |
||
600 | add ebx, [sec] |
||
601 | |||
2384 | hidnplayr | 602 | mov eax, [ebx+COFF_SECTION.VirtualAddress] |
603 | add [edi+COFF_SYM.Value], eax |
||
2288 | clevermous | 604 | .next: |
2384 | hidnplayr | 605 | add edi, sizeof.COFF_SYM |
2288 | clevermous | 606 | mov [symbols], edi |
607 | dec [sym_count] |
||
608 | jnz .fix |
||
609 | mov eax, [retval] |
||
610 | ret |
||
611 | endp |
||
612 | |||
613 | align 4 |
||
614 | proc fix_coff_relocs stdcall uses ebx esi, coff:dword, sym:dword, \ |
||
615 | delta:dword |
||
616 | locals |
||
617 | n_sec dd ? |
||
618 | endl |
||
619 | |||
620 | mov eax, [coff] |
||
2384 | hidnplayr | 621 | movzx ebx, [eax+COFF_HEADER.nSections] |
2288 | clevermous | 622 | mov [n_sec], ebx |
623 | lea esi, [eax+20] |
||
624 | .fix_sec: |
||
2384 | hidnplayr | 625 | mov edi, [esi+COFF_SECTION.PtrReloc] |
2288 | clevermous | 626 | add edi, [coff] |
627 | |||
2384 | hidnplayr | 628 | movzx ecx, [esi+COFF_SECTION.NumReloc] |
2288 | clevermous | 629 | test ecx, ecx |
630 | jz .next |
||
631 | .reloc_loop: |
||
2384 | hidnplayr | 632 | mov ebx, [edi+COFF_RELOC.SymIndex] |
2288 | clevermous | 633 | add ebx, ebx |
634 | lea ebx, [ebx+ebx*8] |
||
635 | add ebx, [sym] |
||
636 | |||
2384 | hidnplayr | 637 | mov edx, [ebx+COFF_SYM.Value] |
2288 | clevermous | 638 | |
2384 | hidnplayr | 639 | cmp [edi+COFF_RELOC.Type], 6 |
2288 | clevermous | 640 | je .dir_32 |
641 | |||
2384 | hidnplayr | 642 | cmp [edi+COFF_RELOC.Type], 20 |
2288 | clevermous | 643 | jne .next_reloc |
644 | .rel_32: |
||
2384 | hidnplayr | 645 | mov eax, [edi+COFF_RELOC.VirtualAddress] |
646 | add eax, [esi+COFF_SECTION.VirtualAddress] |
||
2288 | clevermous | 647 | sub edx, eax |
648 | sub edx, 4 |
||
649 | jmp .fix |
||
650 | .dir_32: |
||
2384 | hidnplayr | 651 | mov eax, [edi+COFF_RELOC.VirtualAddress] |
652 | add eax, [esi+COFF_SECTION.VirtualAddress] |
||
2288 | clevermous | 653 | .fix: |
654 | add eax, [delta] |
||
655 | add [eax], edx |
||
656 | .next_reloc: |
||
657 | add edi, 10 |
||
658 | dec ecx |
||
659 | jnz .reloc_loop |
||
660 | .next: |
||
2384 | hidnplayr | 661 | add esi, sizeof.COFF_SECTION |
2288 | clevermous | 662 | dec [n_sec] |
663 | jnz .fix_sec |
||
664 | .exit: |
||
665 | ret |
||
666 | endp |
||
667 | |||
668 | align 4 |
||
669 | proc rebase_coff stdcall uses ebx esi, coff:dword, sym:dword, \ |
||
670 | delta:dword |
||
671 | locals |
||
672 | n_sec dd ? |
||
673 | endl |
||
674 | |||
675 | mov eax, [coff] |
||
2384 | hidnplayr | 676 | movzx ebx, [eax+COFF_HEADER.nSections] |
2288 | clevermous | 677 | mov [n_sec], ebx |
678 | lea esi, [eax+20] |
||
679 | mov edx, [delta] |
||
680 | .fix_sec: |
||
2384 | hidnplayr | 681 | mov edi, [esi+COFF_SECTION.PtrReloc] |
2288 | clevermous | 682 | add edi, [coff] |
683 | |||
2384 | hidnplayr | 684 | movzx ecx, [esi+COFF_SECTION.NumReloc] |
2288 | clevermous | 685 | test ecx, ecx |
686 | jz .next |
||
687 | .reloc_loop: |
||
2384 | hidnplayr | 688 | cmp [edi+COFF_RELOC.Type], 6 |
2288 | clevermous | 689 | jne .next_reloc |
690 | .dir_32: |
||
2384 | hidnplayr | 691 | mov eax, [edi+COFF_RELOC.VirtualAddress] |
692 | add eax, [esi+COFF_SECTION.VirtualAddress] |
||
2288 | clevermous | 693 | add [eax+edx], edx |
694 | .next_reloc: |
||
695 | add edi, 10 |
||
696 | dec ecx |
||
697 | jnz .reloc_loop |
||
698 | .next: |
||
2384 | hidnplayr | 699 | add esi, sizeof.COFF_SECTION |
2288 | clevermous | 700 | dec [n_sec] |
701 | jnz .fix_sec |
||
702 | .exit: |
||
703 | ret |
||
704 | endp |
||
705 | |||
706 | align 4 |
||
707 | proc load_driver stdcall, driver_name:dword |
||
708 | locals |
||
709 | coff dd ? |
||
710 | sym dd ? |
||
711 | strings dd ? |
||
712 | img_size dd ? |
||
713 | img_base dd ? |
||
714 | start dd ? |
||
715 | |||
716 | exports dd ? ;fake exports table |
||
717 | dd ? |
||
718 | file_name rb 13+16+4+1 ; '/sys/drivers/ |
||
719 | endl |
||
720 | |||
721 | lea edx, [file_name] |
||
722 | mov dword [edx], '/sys' |
||
723 | mov dword [edx+4], '/dri' |
||
724 | mov dword [edx+8], 'vers' |
||
725 | mov byte [edx+12], '/' |
||
726 | mov esi, [driver_name] |
||
727 | .redo: |
||
728 | lea edx, [file_name] |
||
729 | lea edi, [edx+13] |
||
730 | mov ecx, 16 |
||
731 | @@: |
||
732 | lodsb |
||
733 | test al, al |
||
734 | jz @f |
||
735 | stosb |
||
736 | loop @b |
||
737 | @@: |
||
738 | mov dword [edi], '.obj' |
||
739 | mov byte [edi+4], 0 |
||
740 | stdcall load_file, edx |
||
741 | |||
742 | test eax, eax |
||
743 | jz .exit |
||
744 | |||
745 | mov [coff], eax |
||
746 | |||
2384 | hidnplayr | 747 | movzx ecx, [eax+COFF_HEADER.nSections] |
2288 | clevermous | 748 | xor ebx, ebx |
749 | |||
750 | lea edx, [eax+20] |
||
751 | @@: |
||
2384 | hidnplayr | 752 | add ebx, [edx+COFF_SECTION.SizeOfRawData] |
2288 | clevermous | 753 | add ebx, 15 |
754 | and ebx, not 15 |
||
2384 | hidnplayr | 755 | add edx, sizeof.COFF_SECTION |
2288 | clevermous | 756 | dec ecx |
757 | jnz @B |
||
758 | mov [img_size], ebx |
||
759 | |||
760 | stdcall kernel_alloc, ebx |
||
761 | test eax, eax |
||
762 | jz .fail |
||
763 | mov [img_base], eax |
||
764 | |||
765 | mov edi, eax |
||
766 | xor eax, eax |
||
767 | mov ecx, [img_size] |
||
768 | add ecx, 4095 |
||
769 | and ecx, not 4095 |
||
770 | shr ecx, 2 |
||
771 | cld |
||
772 | rep stosd |
||
773 | |||
774 | mov edx, [coff] |
||
2384 | hidnplayr | 775 | movzx ebx, [edx+COFF_HEADER.nSections] |
2288 | clevermous | 776 | mov edi, [img_base] |
777 | lea eax, [edx+20] |
||
778 | @@: |
||
2384 | hidnplayr | 779 | mov [eax+COFF_SECTION.VirtualAddress], edi |
780 | mov esi, [eax+COFF_SECTION.PtrRawData] |
||
2288 | clevermous | 781 | test esi, esi |
782 | jnz .copy |
||
2384 | hidnplayr | 783 | add edi, [eax+COFF_SECTION.SizeOfRawData] |
2288 | clevermous | 784 | jmp .next |
785 | .copy: |
||
786 | add esi, edx |
||
2384 | hidnplayr | 787 | mov ecx, [eax+COFF_SECTION.SizeOfRawData] |
2288 | clevermous | 788 | cld |
789 | rep movsb |
||
790 | .next: |
||
791 | add edi, 15 |
||
792 | and edi, not 15 |
||
2384 | hidnplayr | 793 | add eax, sizeof.COFF_SECTION |
2288 | clevermous | 794 | dec ebx |
795 | jnz @B |
||
796 | |||
2384 | hidnplayr | 797 | mov ebx, [edx+COFF_HEADER.pSymTable] |
2288 | clevermous | 798 | add ebx, edx |
799 | mov [sym], ebx |
||
2384 | hidnplayr | 800 | mov ecx, [edx+COFF_HEADER.nSymbols] |
2288 | clevermous | 801 | add ecx, ecx |
802 | lea ecx, [ecx+ecx*8];ecx*=18 = nSymbols*CSYM_SIZE |
||
803 | add ecx, [sym] |
||
804 | mov [strings], ecx |
||
805 | |||
806 | lea ebx, [exports] |
||
807 | mov dword [ebx], kernel_export |
||
808 | mov dword [ebx+4], 0 |
||
809 | lea eax, [edx+20] |
||
810 | |||
2384 | hidnplayr | 811 | stdcall fix_coff_symbols, eax, [sym], [edx+COFF_HEADER.nSymbols], \ |
2288 | clevermous | 812 | [strings], ebx |
813 | test eax, eax |
||
814 | jz .link_fail |
||
815 | |||
816 | mov ebx, [coff] |
||
817 | stdcall fix_coff_relocs, ebx, [sym], 0 |
||
818 | |||
2384 | hidnplayr | 819 | stdcall get_coff_sym, [sym], [ebx+COFF_HEADER.nSymbols], szVersion |
2288 | clevermous | 820 | test eax, eax |
821 | jz .link_fail |
||
822 | |||
823 | mov eax, [eax] |
||
824 | shr eax, 16 |
||
825 | cmp eax, DRV_COMPAT |
||
826 | jb .ver_fail |
||
827 | |||
828 | cmp eax, DRV_CURRENT |
||
829 | ja .ver_fail |
||
830 | |||
831 | mov ebx, [coff] |
||
2384 | hidnplayr | 832 | stdcall get_coff_sym, [sym], [ebx+COFF_HEADER.nSymbols], szSTART |
2288 | clevermous | 833 | mov [start], eax |
834 | |||
835 | stdcall kernel_free, [coff] |
||
836 | |||
837 | mov ebx, [start] |
||
838 | stdcall ebx, DRV_ENTRY |
||
839 | test eax, eax |
||
840 | jnz .ok |
||
841 | |||
842 | stdcall kernel_free, [img_base] |
||
3171 | hidnplayr | 843 | |
2288 | clevermous | 844 | xor eax, eax |
845 | ret |
||
846 | .ok: |
||
847 | mov ebx, [img_base] |
||
848 | mov [eax+SRV.base], ebx |
||
849 | mov ecx, [start] |
||
850 | mov [eax+SRV.entry], ecx |
||
851 | ret |
||
852 | |||
853 | .ver_fail: |
||
854 | mov esi, msg_CR |
||
855 | call sys_msg_board_str |
||
856 | mov esi, [driver_name] |
||
857 | call sys_msg_board_str |
||
858 | mov esi, msg_CR |
||
859 | call sys_msg_board_str |
||
860 | mov esi, msg_version |
||
861 | call sys_msg_board_str |
||
862 | mov esi, msg_www |
||
863 | call sys_msg_board_str |
||
864 | jmp .cleanup |
||
865 | |||
866 | .link_fail: |
||
867 | mov esi, msg_module |
||
868 | call sys_msg_board_str |
||
869 | mov esi, [driver_name] |
||
870 | call sys_msg_board_str |
||
871 | mov esi, msg_CR |
||
872 | call sys_msg_board_str |
||
873 | .cleanup: |
||
874 | stdcall kernel_free, [img_base] |
||
875 | .fail: |
||
876 | stdcall kernel_free, [coff] |
||
877 | .exit: |
||
878 | xor eax, eax |
||
879 | ret |
||
880 | endp |
||
881 | |||
882 | ; in: edx -> COFF_SECTION struct |
||
883 | ; out: eax = alignment as mask for bits to drop |
||
884 | coff_get_align: |
||
885 | ; Rules: |
||
886 | ; - if alignment is not given, use default = 4K; |
||
887 | ; - if alignment is given and is no more than 4K, use it; |
||
888 | ; - if alignment is more than 4K, revert to 4K. |
||
889 | push ecx |
||
2384 | hidnplayr | 890 | mov cl, byte [edx+COFF_SECTION.Characteristics+2] |
2288 | clevermous | 891 | mov eax, 1 |
892 | shr cl, 4 |
||
893 | dec cl |
||
894 | js .default |
||
895 | cmp cl, 12 |
||
896 | jbe @f |
||
897 | .default: |
||
898 | mov cl, 12 |
||
899 | @@: |
||
900 | shl eax, cl |
||
901 | pop ecx |
||
902 | dec eax |
||
903 | ret |
||
904 | |||
905 | align 4 |
||
906 | proc load_library stdcall, file_name:dword |
||
907 | locals |
||
908 | fullname rb 260 |
||
909 | fileinfo rb 40 |
||
910 | coff dd ? |
||
911 | img_base dd ? |
||
912 | endl |
||
913 | |||
914 | cli |
||
915 | |||
916 | ; resolve file name |
||
917 | mov ebx, [file_name] |
||
918 | lea edi, [fullname+1] |
||
919 | mov byte [edi-1], '/' |
||
920 | stdcall get_full_file_name, edi, 259 |
||
921 | test al, al |
||
922 | jz .fail |
||
923 | |||
924 | ; scan for required DLL in list of already loaded for this process, |
||
925 | ; ignore timestamp |
||
926 | mov esi, [CURRENT_TASK] |
||
927 | shl esi, 8 |
||
928 | lea edi, [fullname] |
||
929 | mov ebx, [esi+SLOT_BASE+APPDATA.dlls_list_ptr] |
||
930 | test ebx, ebx |
||
931 | jz .not_in_process |
||
932 | mov esi, [ebx+HDLL.fd] |
||
933 | .scan_in_process: |
||
934 | cmp esi, ebx |
||
935 | jz .not_in_process |
||
936 | mov eax, [esi+HDLL.parent] |
||
937 | add eax, DLLDESCR.name |
||
938 | stdcall strncmp, eax, edi, -1 |
||
939 | test eax, eax |
||
940 | jnz .next_in_process |
||
941 | ; simple variant: load DLL which is already loaded in this process |
||
942 | ; just increment reference counters and return address of exports table |
||
943 | inc [esi+HDLL.refcount] |
||
944 | mov ecx, [esi+HDLL.parent] |
||
945 | inc [ecx+DLLDESCR.refcount] |
||
946 | mov eax, [ecx+DLLDESCR.exports] |
||
947 | sub eax, [ecx+DLLDESCR.defaultbase] |
||
948 | add eax, [esi+HDLL.base] |
||
949 | ret |
||
950 | .next_in_process: |
||
951 | mov esi, [esi+HDLL.fd] |
||
952 | jmp .scan_in_process |
||
953 | .not_in_process: |
||
954 | |||
955 | ; scan in full list, compare timestamp |
||
956 | lea eax, [fileinfo] |
||
957 | stdcall get_fileinfo, edi, eax |
||
958 | test eax, eax |
||
959 | jnz .fail |
||
960 | mov esi, [dll_list.fd] |
||
961 | .scan_for_dlls: |
||
962 | cmp esi, dll_list |
||
963 | jz .load_new |
||
964 | lea eax, [esi+DLLDESCR.name] |
||
965 | stdcall strncmp, eax, edi, -1 |
||
966 | test eax, eax |
||
967 | jnz .continue_scan |
||
968 | .test_prev_dll: |
||
969 | mov eax, dword [fileinfo+24]; last modified time |
||
970 | mov edx, dword [fileinfo+28]; last modified date |
||
971 | cmp dword [esi+DLLDESCR.timestamp], eax |
||
972 | jnz .continue_scan |
||
973 | cmp dword [esi+DLLDESCR.timestamp+4], edx |
||
974 | jz .dll_already_loaded |
||
975 | .continue_scan: |
||
976 | mov esi, [esi+DLLDESCR.fd] |
||
977 | jmp .scan_for_dlls |
||
978 | |||
979 | ; new DLL |
||
980 | .load_new: |
||
981 | ; load file |
||
982 | stdcall load_file, edi |
||
983 | test eax, eax |
||
984 | jz .fail |
||
985 | mov [coff], eax |
||
986 | mov dword [fileinfo+32], ebx |
||
987 | |||
988 | ; allocate DLLDESCR struct; size is DLLDESCR.sizeof plus size of DLL name |
||
989 | mov esi, edi |
||
990 | mov ecx, -1 |
||
991 | xor eax, eax |
||
992 | repnz scasb |
||
993 | not ecx |
||
2384 | hidnplayr | 994 | lea eax, [ecx+sizeof.DLLDESCR] |
2288 | clevermous | 995 | push ecx |
996 | call malloc |
||
997 | pop ecx |
||
998 | test eax, eax |
||
999 | jz .fail_and_free_coff |
||
1000 | ; save timestamp |
||
1001 | lea edi, [eax+DLLDESCR.name] |
||
1002 | rep movsb |
||
1003 | mov esi, eax |
||
1004 | mov eax, dword [fileinfo+24] |
||
1005 | mov dword [esi+DLLDESCR.timestamp], eax |
||
1006 | mov eax, dword [fileinfo+28] |
||
1007 | mov dword [esi+DLLDESCR.timestamp+4], eax |
||
1008 | ; initialize DLLDESCR struct |
||
1009 | and dword [esi+DLLDESCR.refcount], 0; no HDLLs yet; later it will be incremented |
||
1010 | mov [esi+DLLDESCR.fd], dll_list |
||
1011 | mov eax, [dll_list.bk] |
||
1012 | mov [dll_list.bk], esi |
||
1013 | mov [esi+DLLDESCR.bk], eax |
||
1014 | mov [eax+DLLDESCR.fd], esi |
||
1015 | |||
1016 | ; calculate size of loaded DLL |
||
1017 | mov edx, [coff] |
||
2384 | hidnplayr | 1018 | movzx ecx, [edx+COFF_HEADER.nSections] |
2288 | clevermous | 1019 | xor ebx, ebx |
1020 | |||
1021 | add edx, 20 |
||
1022 | @@: |
||
1023 | call coff_get_align |
||
1024 | add ebx, eax |
||
1025 | not eax |
||
1026 | and ebx, eax |
||
2384 | hidnplayr | 1027 | add ebx, [edx+COFF_SECTION.SizeOfRawData] |
1028 | add edx, sizeof.COFF_SECTION |
||
2288 | clevermous | 1029 | dec ecx |
1030 | jnz @B |
||
1031 | ; it must be nonzero and not too big |
||
1032 | mov [esi+DLLDESCR.size], ebx |
||
1033 | test ebx, ebx |
||
1034 | jz .fail_and_free_dll |
||
1035 | cmp ebx, MAX_DEFAULT_DLL_ADDR-MIN_DEFAULT_DLL_ADDR |
||
1036 | ja .fail_and_free_dll |
||
1037 | ; allocate memory for kernel-side image |
||
1038 | stdcall kernel_alloc, ebx |
||
1039 | test eax, eax |
||
1040 | jz .fail_and_free_dll |
||
1041 | mov [esi+DLLDESCR.data], eax |
||
1042 | ; calculate preferred base address |
||
1043 | add ebx, 0x1FFF |
||
1044 | and ebx, not 0xFFF |
||
1045 | mov ecx, [dll_cur_addr] |
||
1046 | lea edx, [ecx+ebx] |
||
1047 | cmp edx, MAX_DEFAULT_DLL_ADDR |
||
1048 | jb @f |
||
1049 | mov ecx, MIN_DEFAULT_DLL_ADDR |
||
1050 | lea edx, [ecx+ebx] |
||
1051 | @@: |
||
1052 | mov [esi+DLLDESCR.defaultbase], ecx |
||
1053 | mov [dll_cur_addr], edx |
||
1054 | |||
1055 | ; copy sections and set correct values for VirtualAddress'es in headers |
||
1056 | push esi |
||
1057 | mov edx, [coff] |
||
2384 | hidnplayr | 1058 | movzx ebx, [edx+COFF_HEADER.nSections] |
2288 | clevermous | 1059 | mov edi, eax |
1060 | add edx, 20 |
||
1061 | cld |
||
1062 | @@: |
||
1063 | call coff_get_align |
||
1064 | add ecx, eax |
||
1065 | add edi, eax |
||
1066 | not eax |
||
1067 | and ecx, eax |
||
1068 | and edi, eax |
||
2384 | hidnplayr | 1069 | mov [edx+COFF_SECTION.VirtualAddress], ecx |
1070 | add ecx, [edx+COFF_SECTION.SizeOfRawData] |
||
1071 | mov esi, [edx+COFF_SECTION.PtrRawData] |
||
2288 | clevermous | 1072 | push ecx |
2384 | hidnplayr | 1073 | mov ecx, [edx+COFF_SECTION.SizeOfRawData] |
2288 | clevermous | 1074 | test esi, esi |
1075 | jnz .copy |
||
1076 | xor eax, eax |
||
1077 | rep stosb |
||
1078 | jmp .next |
||
1079 | .copy: |
||
1080 | add esi, [coff] |
||
1081 | rep movsb |
||
1082 | .next: |
||
1083 | pop ecx |
||
2384 | hidnplayr | 1084 | add edx, sizeof.COFF_SECTION |
2288 | clevermous | 1085 | dec ebx |
1086 | jnz @B |
||
1087 | pop esi |
||
1088 | |||
1089 | ; save some additional data from COFF file |
||
1090 | ; later we will use COFF header, headers for sections and symbol table |
||
1091 | ; and also relocations table for all sections |
||
1092 | mov edx, [coff] |
||
2384 | hidnplayr | 1093 | mov ebx, [edx+COFF_HEADER.pSymTable] |
2288 | clevermous | 1094 | mov edi, dword [fileinfo+32] |
1095 | sub edi, ebx |
||
1096 | jc .fail_and_free_data |
||
1097 | mov [esi+DLLDESCR.symbols_lim], edi |
||
1098 | add ebx, edx |
||
2384 | hidnplayr | 1099 | movzx ecx, [edx+COFF_HEADER.nSections] |
2288 | clevermous | 1100 | lea ecx, [ecx*5] |
1101 | lea edi, [edi+ecx*8+20] |
||
1102 | add edx, 20 |
||
1103 | @@: |
||
2384 | hidnplayr | 1104 | movzx eax, [edx+COFF_SECTION.NumReloc] |
2288 | clevermous | 1105 | lea eax, [eax*5] |
1106 | lea edi, [edi+eax*2] |
||
2384 | hidnplayr | 1107 | add edx, sizeof.COFF_SECTION |
2288 | clevermous | 1108 | sub ecx, 5 |
1109 | jnz @b |
||
1110 | stdcall kernel_alloc, edi |
||
1111 | test eax, eax |
||
1112 | jz .fail_and_free_data |
||
1113 | mov edx, [coff] |
||
2384 | hidnplayr | 1114 | movzx ecx, [edx+COFF_HEADER.nSections] |
2288 | clevermous | 1115 | lea ecx, [ecx*5] |
1116 | lea ecx, [ecx*2+5] |
||
1117 | mov [esi+DLLDESCR.coff_hdr], eax |
||
1118 | push esi |
||
1119 | mov esi, edx |
||
1120 | mov edi, eax |
||
1121 | rep movsd |
||
1122 | pop esi |
||
1123 | mov [esi+DLLDESCR.symbols_ptr], edi |
||
1124 | push esi |
||
2384 | hidnplayr | 1125 | mov ecx, [edx+COFF_HEADER.nSymbols] |
2288 | clevermous | 1126 | mov [esi+DLLDESCR.symbols_num], ecx |
1127 | mov ecx, [esi+DLLDESCR.symbols_lim] |
||
1128 | mov esi, ebx |
||
1129 | rep movsb |
||
1130 | pop esi |
||
1131 | mov ebx, [esi+DLLDESCR.coff_hdr] |
||
1132 | push esi |
||
2384 | hidnplayr | 1133 | movzx eax, [edx+COFF_HEADER.nSections] |
2288 | clevermous | 1134 | lea edx, [ebx+20] |
1135 | @@: |
||
2384 | hidnplayr | 1136 | movzx ecx, [edx+COFF_SECTION.NumReloc] |
2288 | clevermous | 1137 | lea ecx, [ecx*5] |
2384 | hidnplayr | 1138 | mov esi, [edx+COFF_SECTION.PtrReloc] |
1139 | mov [edx+COFF_SECTION.PtrReloc], edi |
||
1140 | sub [edx+COFF_SECTION.PtrReloc], ebx |
||
2288 | clevermous | 1141 | add esi, [coff] |
1142 | shr ecx, 1 |
||
1143 | rep movsd |
||
1144 | adc ecx, ecx |
||
1145 | rep movsw |
||
2384 | hidnplayr | 1146 | add edx, sizeof.COFF_SECTION |
2288 | clevermous | 1147 | dec eax |
1148 | jnz @b |
||
1149 | pop esi |
||
1150 | |||
1151 | ; fixup symbols |
||
1152 | mov edx, ebx |
||
2384 | hidnplayr | 1153 | mov eax, [ebx+COFF_HEADER.nSymbols] |
2288 | clevermous | 1154 | add edx, 20 |
1155 | mov ecx, [esi+DLLDESCR.symbols_num] |
||
1156 | lea ecx, [ecx*9] |
||
1157 | add ecx, ecx |
||
1158 | add ecx, [esi+DLLDESCR.symbols_ptr] |
||
1159 | |||
1160 | stdcall fix_coff_symbols, edx, [esi+DLLDESCR.symbols_ptr], eax, \ |
||
1161 | ecx, 0 |
||
1162 | ; test eax, eax |
||
1163 | ; jnz @F |
||
1164 | ; |
||
1165 | ;@@: |
||
1166 | |||
2384 | hidnplayr | 1167 | stdcall get_coff_sym, [esi+DLLDESCR.symbols_ptr], [ebx+COFF_HEADER.nSymbols], szEXPORTS |
2288 | clevermous | 1168 | test eax, eax |
1169 | jnz @F |
||
1170 | |||
2384 | hidnplayr | 1171 | stdcall get_coff_sym, [esi+DLLDESCR.symbols_ptr], [ebx+COFF_HEADER.nSymbols], sz_EXPORTS |
2288 | clevermous | 1172 | @@: |
1173 | mov [esi+DLLDESCR.exports], eax |
||
1174 | |||
1175 | ; fix relocs in the hidden copy in kernel memory to default address |
||
1176 | ; it is first fix; usually this will be enough, but second fix |
||
1177 | ; can be necessary if real load address will not equal assumption |
||
1178 | mov eax, [esi+DLLDESCR.data] |
||
1179 | sub eax, [esi+DLLDESCR.defaultbase] |
||
1180 | stdcall fix_coff_relocs, ebx, [esi+DLLDESCR.symbols_ptr], eax |
||
1181 | |||
1182 | stdcall kernel_free, [coff] |
||
1183 | |||
1184 | .dll_already_loaded: |
||
1185 | inc [esi+DLLDESCR.refcount] |
||
1186 | push esi |
||
1187 | call init_heap |
||
1188 | pop esi |
||
1189 | |||
1190 | mov edi, [esi+DLLDESCR.size] |
||
1191 | stdcall user_alloc_at, [esi+DLLDESCR.defaultbase], edi |
||
1192 | test eax, eax |
||
1193 | jnz @f |
||
1194 | stdcall user_alloc, edi |
||
1195 | test eax, eax |
||
1196 | jz .fail_and_dereference |
||
1197 | @@: |
||
1198 | mov [img_base], eax |
||
2384 | hidnplayr | 1199 | mov eax, sizeof.HDLL |
2288 | clevermous | 1200 | call malloc |
1201 | test eax, eax |
||
1202 | jz .fail_and_free_user |
||
1203 | mov ebx, [CURRENT_TASK] |
||
1204 | shl ebx, 5 |
||
1205 | mov edx, [CURRENT_TASK+ebx+TASKDATA.pid] |
||
1206 | mov [eax+HDLL.pid], edx |
||
1207 | push eax |
||
1208 | call init_dlls_in_thread |
||
1209 | pop ebx |
||
1210 | test eax, eax |
||
1211 | jz .fail_and_free_user |
||
1212 | mov edx, [eax+HDLL.fd] |
||
1213 | mov [ebx+HDLL.fd], edx |
||
1214 | mov [ebx+HDLL.bk], eax |
||
1215 | mov [eax+HDLL.fd], ebx |
||
1216 | mov [edx+HDLL.bk], ebx |
||
1217 | mov eax, ebx |
||
1218 | mov ebx, [img_base] |
||
1219 | mov [eax+HDLL.base], ebx |
||
1220 | mov [eax+HDLL.size], edi |
||
1221 | mov [eax+HDLL.refcount], 1 |
||
1222 | mov [eax+HDLL.parent], esi |
||
1223 | mov edx, ebx |
||
1224 | shr edx, 12 |
||
1225 | or dword [page_tabs+(edx-1)*4], DONT_FREE_BLOCK |
||
1226 | ; copy entries of page table from kernel-side image to usermode |
||
1227 | ; use copy-on-write for user-mode image, so map as readonly |
||
1228 | xor edi, edi |
||
1229 | mov ecx, [esi+DLLDESCR.data] |
||
1230 | shr ecx, 12 |
||
1231 | .map_pages_loop: |
||
1232 | mov eax, [page_tabs+ecx*4] |
||
1233 | and eax, not 0xFFF |
||
1234 | or al, PG_USER |
||
1235 | xchg eax, [page_tabs+edx*4] |
||
1236 | test al, 1 |
||
1237 | jz @f |
||
1238 | call free_page |
||
1239 | @@: |
||
1240 | invlpg [ebx+edi] |
||
1241 | inc ecx |
||
1242 | inc edx |
||
1243 | add edi, 0x1000 |
||
1244 | cmp edi, [esi+DLLDESCR.size] |
||
1245 | jb .map_pages_loop |
||
1246 | |||
1247 | ; if real user-mode base is not equal to preferred base, relocate image |
||
1248 | sub ebx, [esi+DLLDESCR.defaultbase] |
||
1249 | jz @f |
||
1250 | stdcall rebase_coff, [esi+DLLDESCR.coff_hdr], [esi+DLLDESCR.symbols_ptr], ebx |
||
1251 | @@: |
||
1252 | |||
1253 | mov eax, [esi+DLLDESCR.exports] |
||
1254 | sub eax, [esi+DLLDESCR.defaultbase] |
||
1255 | add eax, [img_base] |
||
1256 | ret |
||
1257 | .fail_and_free_data: |
||
1258 | stdcall kernel_free, [esi+DLLDESCR.data] |
||
1259 | .fail_and_free_dll: |
||
1260 | mov eax, esi |
||
1261 | call free |
||
1262 | .fail_and_free_coff: |
||
1263 | stdcall kernel_free, [coff] |
||
1264 | .fail: |
||
1265 | xor eax, eax |
||
1266 | ret |
||
1267 | .fail_and_free_user: |
||
1268 | stdcall user_free, [img_base] |
||
1269 | .fail_and_dereference: |
||
1270 | mov eax, 1 ; delete 1 reference |
||
1271 | call dereference_dll |
||
1272 | xor eax, eax |
||
1273 | ret |
||
1274 | endp |
||
1275 | |||
1276 | ; initialize [APPDATA.dlls_list_ptr] for given thread |
||
1277 | ; DLL is per-process object, so APPDATA.dlls_list_ptr must be |
||
1278 | ; kept in sync for all threads of one process. |
||
1279 | ; out: eax = APPDATA.dlls_list_ptr if all is OK, |
||
1280 | ; NULL if memory allocation failed |
||
1281 | init_dlls_in_thread: |
||
1282 | mov ebx, [current_slot] |
||
1283 | mov eax, [ebx+APPDATA.dlls_list_ptr] |
||
1284 | test eax, eax |
||
1285 | jnz .ret |
||
1286 | push [ebx+APPDATA.dir_table] |
||
1287 | mov eax, 8 |
||
1288 | call malloc |
||
1289 | pop edx |
||
1290 | test eax, eax |
||
1291 | jz .ret |
||
1292 | mov [eax], eax |
||
1293 | mov [eax+4], eax |
||
1294 | mov ecx, [TASK_COUNT] |
||
1295 | mov ebx, SLOT_BASE+256 |
||
1296 | .set: |
||
1297 | cmp [ebx+APPDATA.dir_table], edx |
||
1298 | jnz @f |
||
1299 | mov [ebx+APPDATA.dlls_list_ptr], eax |
||
1300 | @@: |
||
1301 | add ebx, 256 |
||
1302 | dec ecx |
||
1303 | jnz .set |
||
1304 | .ret: |
||
1305 | ret |
||
1306 | |||
1307 | ; in: eax = number of references to delete, esi -> DLLDESCR struc |
||
1308 | dereference_dll: |
||
1309 | sub [esi+DLLDESCR.refcount], eax |
||
1310 | jnz .ret |
||
1311 | mov eax, [esi+DLLDESCR.fd] |
||
1312 | mov edx, [esi+DLLDESCR.bk] |
||
1313 | mov [eax+DLLDESCR.bk], edx |
||
1314 | mov [edx+DLLDESCR.fd], eax |
||
1315 | stdcall kernel_free, [esi+DLLDESCR.coff_hdr] |
||
1316 | stdcall kernel_free, [esi+DLLDESCR.data] |
||
1317 | mov eax, esi |
||
1318 | call free |
||
1319 | .ret: |
||
1320 | ret |
||
1321 | |||
1322 | destroy_hdll: |
||
1323 | push ebx ecx esi edi |
||
1324 | push eax |
||
1325 | mov ebx, [eax+HDLL.base] |
||
1326 | mov esi, [eax+HDLL.parent] |
||
1327 | mov edx, [esi+DLLDESCR.size] |
||
1328 | ; The following actions require the context of application where HDLL is mapped. |
||
1329 | ; However, destroy_hdll can be called in the context of OS thread when |
||
1330 | ; cleaning up objects created by the application which is destroyed. |
||
1331 | ; So remember current cr3 and set it to page table of target. |
||
1332 | mov eax, [ecx+APPDATA.dir_table] |
||
1333 | ; Because we cheat with cr3, disable interrupts: task switch would restore |
||
1334 | ; page table from APPDATA of current thread. |
||
1335 | ; Also set [current_slot] because it is used by user_free. |
||
1336 | pushf |
||
1337 | cli |
||
1338 | push [current_slot] |
||
1339 | mov [current_slot], ecx |
||
1340 | mov ecx, cr3 |
||
1341 | push ecx |
||
1342 | mov cr3, eax |
||
1343 | push ebx ; argument for user_free |
||
1344 | mov eax, ebx |
||
1345 | shr ebx, 12 |
||
1346 | push ebx |
||
1347 | mov esi, [esi+DLLDESCR.data] |
||
1348 | shr esi, 12 |
||
1349 | .unmap_loop: |
||
1350 | push eax |
||
1351 | mov eax, 2 |
||
1352 | xchg eax, [page_tabs+ebx*4] |
||
1353 | mov ecx, [page_tabs+esi*4] |
||
1354 | and eax, not 0xFFF |
||
1355 | and ecx, not 0xFFF |
||
1356 | cmp eax, ecx |
||
1357 | jz @f |
||
1358 | call free_page |
||
1359 | @@: |
||
1360 | pop eax |
||
1361 | invlpg [eax] |
||
1362 | add eax, 0x1000 |
||
1363 | inc ebx |
||
1364 | inc esi |
||
1365 | sub edx, 0x1000 |
||
1366 | ja .unmap_loop |
||
1367 | pop ebx |
||
1368 | and dword [page_tabs+(ebx-1)*4], not DONT_FREE_BLOCK |
||
1369 | call user_free |
||
1370 | ; Restore context. |
||
1371 | pop eax |
||
1372 | mov cr3, eax |
||
1373 | pop [current_slot] |
||
1374 | popf |
||
1375 | ; Ok, cheating is done. |
||
1376 | pop eax |
||
1377 | push eax |
||
1378 | mov esi, [eax+HDLL.parent] |
||
1379 | mov eax, [eax+HDLL.refcount] |
||
1380 | call dereference_dll |
||
1381 | pop eax |
||
1382 | mov edx, [eax+HDLL.bk] |
||
1383 | mov ebx, [eax+HDLL.fd] |
||
1384 | mov [ebx+HDLL.bk], edx |
||
1385 | mov [edx+HDLL.fd], ebx |
||
1386 | call free |
||
1387 | pop edi esi ecx ebx |
||
1388 | ret |
||
1389 | |||
1390 | ; ecx -> APPDATA for slot, esi = dlls_list_ptr |
||
1391 | destroy_all_hdlls: |
||
1392 | test esi, esi |
||
1393 | jz .ret |
||
1394 | .loop: |
||
1395 | mov eax, [esi+HDLL.fd] |
||
1396 | cmp eax, esi |
||
1397 | jz free |
||
1398 | call destroy_hdll |
||
1399 | jmp .loop |
||
1400 | .ret: |
||
1401 | ret |
||
1402 | |||
1403 | align 4 |
||
1404 | stop_all_services: |
||
1405 | push ebp |
||
1406 | mov edx, [srv.fd] |
||
1407 | .next: |
||
2384 | hidnplayr | 1408 | cmp edx, srv.fd-SRV.fd |
2288 | clevermous | 1409 | je .done |
1410 | cmp [edx+SRV.magic], ' SRV' |
||
1411 | jne .next |
||
2384 | hidnplayr | 1412 | cmp [edx+SRV.size], sizeof.SRV |
2288 | clevermous | 1413 | jne .next |
1414 | |||
1415 | mov ebx, [edx+SRV.entry] |
||
1416 | mov edx, [edx+SRV.fd] |
||
1417 | test ebx, ebx |
||
1418 | jz .next |
||
1419 | |||
1420 | push edx |
||
1421 | mov ebp, esp |
||
1422 | push 0 |
||
1423 | push -1 |
||
1424 | call ebx |
||
1425 | mov esp, ebp |
||
1426 | pop edx |
||
1427 | jmp .next |
||
1428 | .done: |
||
1429 | pop ebp |
||
1430 | ret |
||
1431 | |||
1432 | ; param |
||
1433 | ; eax= size |
||
1434 | ; ebx= pid |
||
1435 | |||
1436 | align 4 |
||
1437 | create_kernel_object: |
||
1438 | |||
1439 | push ebx |
||
1440 | call malloc |
||
1441 | pop ebx |
||
1442 | test eax, eax |
||
1443 | jz .fail |
||
1444 | |||
1445 | mov ecx, [current_slot] |
||
1446 | add ecx, APP_OBJ_OFFSET |
||
1447 | |||
1448 | pushfd |
||
1449 | cli |
||
1450 | mov edx, [ecx+APPOBJ.fd] |
||
1451 | mov [eax+APPOBJ.fd], edx |
||
1452 | mov [eax+APPOBJ.bk], ecx |
||
1453 | mov [eax+APPOBJ.pid], ebx |
||
1454 | |||
1455 | mov [ecx+APPOBJ.fd], eax |
||
1456 | mov [edx+APPOBJ.bk], eax |
||
1457 | popfd |
||
1458 | .fail: |
||
1459 | ret |
||
1460 | |||
1461 | ; param |
||
1462 | ; eax= object |
||
1463 | |||
1464 | align 4 |
||
1465 | destroy_kernel_object: |
||
1466 | |||
1467 | pushfd |
||
1468 | cli |
||
1469 | mov ebx, [eax+APPOBJ.fd] |
||
1470 | mov ecx, [eax+APPOBJ.bk] |
||
1471 | mov [ebx+APPOBJ.bk], ecx |
||
1472 | mov [ecx+APPOBJ.fd], ebx |
||
1473 | popfd |
||
1474 | |||
1475 | xor edx, edx ;clear common header |
||
1476 | mov [eax], edx |
||
1477 | mov [eax+4], edx |
||
1478 | mov [eax+8], edx |
||
1479 | mov [eax+12], edx |
||
1480 | mov [eax+16], edx |
||
1481 | |||
1482 | call free ;release object memory |
||
1483 | ret |