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Rev | Author | Line No. | Line |
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2288 | clevermous | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2004-2009. All rights reserved. ;; |
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4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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7 | |||
8 | $Revision: 2288 $ |
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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 | |||
142 | cmp [edi+SRV.size], SRV.sizeof |
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143 | jne .fail |
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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 | |||
174 | cmp [eax+SRV.size], SRV.sizeof |
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175 | jne .fail |
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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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199 | cmp edx, srv.fd-SRV_FD_OFFSET |
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200 | je .not_load |
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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 | |||
229 | mov eax, SRV.sizeof |
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230 | call malloc |
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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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246 | mov [eax+SRV.size], SRV.sizeof |
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247 | |||
248 | mov ebx, srv.fd-SRV_FD_OFFSET |
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249 | mov edx, [ebx+SRV.fd] |
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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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372 | call file_system_lfn |
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373 | popad |
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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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440 | pushfd |
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441 | cli |
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442 | stdcall unpack, [file], eax |
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443 | popfd |
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444 | stdcall kernel_free, [file] |
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445 | mov eax, [file2] |
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446 | mov ebx, [file_size] |
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447 | .exit: |
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448 | push eax |
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449 | lea edi, [eax+ebx] ;cleanup remain space |
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450 | mov ecx, 4096 ;from file end |
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451 | and ebx, 4095 |
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452 | jz @f |
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453 | sub ecx, ebx |
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454 | xor eax, eax |
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455 | cld |
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456 | rep stosb |
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457 | @@: |
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458 | mov ebx, [file_size] |
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459 | pop eax |
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460 | pop edi |
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461 | pop esi |
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462 | ret |
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463 | .cleanup: |
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464 | stdcall kernel_free, [file] |
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465 | .fail: |
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466 | xor eax, eax |
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467 | xor ebx, ebx |
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468 | pop edi |
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469 | pop esi |
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470 | ret |
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471 | endp |
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472 | |||
473 | align 4 |
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474 | proc get_proc_ex stdcall, proc_name:dword, imports:dword |
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475 | |||
476 | .look_up: |
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477 | mov edx, [imports] |
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478 | test edx, edx |
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479 | jz .end |
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480 | mov edx, [edx] |
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481 | test edx, edx |
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482 | jz .end |
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483 | .next: |
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484 | mov eax, [edx] |
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485 | test eax, eax |
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486 | jz .next_table |
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487 | |||
488 | push edx |
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489 | stdcall strncmp, eax, [proc_name], 256 |
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490 | pop edx |
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491 | test eax, eax |
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492 | jz .ok |
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493 | |||
494 | add edx, 8 |
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495 | jmp .next |
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496 | .next_table: |
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497 | add [imports], 4 |
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498 | jmp .look_up |
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499 | .ok: |
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500 | mov eax, [edx+4] |
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501 | ret |
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502 | .end: |
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503 | xor eax, eax |
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504 | ret |
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505 | endp |
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506 | |||
507 | align 4 |
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508 | proc fix_coff_symbols stdcall uses ebx esi, sec:dword, symbols:dword,\ |
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509 | sym_count:dword, strings:dword, imports:dword |
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510 | locals |
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511 | retval dd ? |
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512 | endl |
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513 | |||
514 | mov edi, [symbols] |
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515 | mov [retval], 1 |
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516 | .fix: |
||
517 | movzx ebx, [edi+CSYM.SectionNumber] |
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518 | test ebx, ebx |
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519 | jnz .internal |
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520 | mov eax, dword [edi+CSYM.Name] |
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521 | test eax, eax |
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522 | jnz @F |
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523 | |||
524 | mov edi, [edi+4] |
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525 | add edi, [strings] |
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526 | @@: |
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527 | push edi |
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528 | stdcall get_proc_ex, edi, [imports] |
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529 | pop edi |
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530 | |||
531 | xor ebx, ebx |
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532 | test eax, eax |
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533 | jnz @F |
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534 | |||
535 | mov esi, msg_unresolved |
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536 | call sys_msg_board_str |
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537 | mov esi, edi |
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538 | call sys_msg_board_str |
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539 | mov esi, msg_CR |
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540 | call sys_msg_board_str |
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541 | |||
542 | mov [retval], 0 |
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543 | @@: |
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544 | mov edi, [symbols] |
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545 | mov [edi+CSYM.Value], eax |
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546 | jmp .next |
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547 | .internal: |
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548 | cmp bx, -1 |
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549 | je .next |
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550 | cmp bx, -2 |
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551 | je .next |
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552 | |||
553 | dec ebx |
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554 | shl ebx, 3 |
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555 | lea ebx, [ebx+ebx*4] |
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556 | add ebx, [sec] |
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557 | |||
558 | mov eax, [ebx+CFS.VirtualAddress] |
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559 | add [edi+CSYM.Value], eax |
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560 | .next: |
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561 | add edi, CSYM_SIZE |
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562 | mov [symbols], edi |
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563 | dec [sym_count] |
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564 | jnz .fix |
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565 | mov eax, [retval] |
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566 | ret |
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567 | endp |
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568 | |||
569 | align 4 |
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570 | proc fix_coff_relocs stdcall uses ebx esi, coff:dword, sym:dword, \ |
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571 | delta:dword |
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572 | locals |
||
573 | n_sec dd ? |
||
574 | endl |
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575 | |||
576 | mov eax, [coff] |
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577 | movzx ebx, [eax+CFH.nSections] |
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578 | mov [n_sec], ebx |
||
579 | lea esi, [eax+20] |
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580 | .fix_sec: |
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581 | mov edi, [esi+CFS.PtrReloc] |
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582 | add edi, [coff] |
||
583 | |||
584 | movzx ecx, [esi+CFS.NumReloc] |
||
585 | test ecx, ecx |
||
586 | jz .next |
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587 | .reloc_loop: |
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588 | mov ebx, [edi+CRELOC.SymIndex] |
||
589 | add ebx, ebx |
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590 | lea ebx, [ebx+ebx*8] |
||
591 | add ebx, [sym] |
||
592 | |||
593 | mov edx, [ebx+CSYM.Value] |
||
594 | |||
595 | cmp [edi+CRELOC.Type], 6 |
||
596 | je .dir_32 |
||
597 | |||
598 | cmp [edi+CRELOC.Type], 20 |
||
599 | jne .next_reloc |
||
600 | .rel_32: |
||
601 | mov eax, [edi+CRELOC.VirtualAddress] |
||
602 | add eax, [esi+CFS.VirtualAddress] |
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603 | sub edx, eax |
||
604 | sub edx, 4 |
||
605 | jmp .fix |
||
606 | .dir_32: |
||
607 | mov eax, [edi+CRELOC.VirtualAddress] |
||
608 | add eax, [esi+CFS.VirtualAddress] |
||
609 | .fix: |
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610 | add eax, [delta] |
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611 | add [eax], edx |
||
612 | .next_reloc: |
||
613 | add edi, 10 |
||
614 | dec ecx |
||
615 | jnz .reloc_loop |
||
616 | .next: |
||
617 | add esi, COFF_SECTION_SIZE |
||
618 | dec [n_sec] |
||
619 | jnz .fix_sec |
||
620 | .exit: |
||
621 | ret |
||
622 | endp |
||
623 | |||
624 | align 4 |
||
625 | proc rebase_coff stdcall uses ebx esi, coff:dword, sym:dword, \ |
||
626 | delta:dword |
||
627 | locals |
||
628 | n_sec dd ? |
||
629 | endl |
||
630 | |||
631 | mov eax, [coff] |
||
632 | movzx ebx, [eax+CFH.nSections] |
||
633 | mov [n_sec], ebx |
||
634 | lea esi, [eax+20] |
||
635 | mov edx, [delta] |
||
636 | .fix_sec: |
||
637 | mov edi, [esi+CFS.PtrReloc] |
||
638 | add edi, [coff] |
||
639 | |||
640 | movzx ecx, [esi+CFS.NumReloc] |
||
641 | test ecx, ecx |
||
642 | jz .next |
||
643 | .reloc_loop: |
||
644 | cmp [edi+CRELOC.Type], 6 |
||
645 | jne .next_reloc |
||
646 | .dir_32: |
||
647 | mov eax, [edi+CRELOC.VirtualAddress] |
||
648 | add eax, [esi+CFS.VirtualAddress] |
||
649 | add [eax+edx], edx |
||
650 | .next_reloc: |
||
651 | add edi, 10 |
||
652 | dec ecx |
||
653 | jnz .reloc_loop |
||
654 | .next: |
||
655 | add esi, COFF_SECTION_SIZE |
||
656 | dec [n_sec] |
||
657 | jnz .fix_sec |
||
658 | .exit: |
||
659 | ret |
||
660 | endp |
||
661 | |||
662 | align 4 |
||
663 | proc load_driver stdcall, driver_name:dword |
||
664 | locals |
||
665 | coff dd ? |
||
666 | sym dd ? |
||
667 | strings dd ? |
||
668 | img_size dd ? |
||
669 | img_base dd ? |
||
670 | start dd ? |
||
671 | |||
672 | exports dd ? ;fake exports table |
||
673 | dd ? |
||
674 | file_name rb 13+16+4+1 ; '/sys/drivers/ |
||
675 | endl |
||
676 | |||
677 | lea edx, [file_name] |
||
678 | mov dword [edx], '/sys' |
||
679 | mov dword [edx+4], '/dri' |
||
680 | mov dword [edx+8], 'vers' |
||
681 | mov byte [edx+12], '/' |
||
682 | mov esi, [driver_name] |
||
683 | .redo: |
||
684 | lea edx, [file_name] |
||
685 | lea edi, [edx+13] |
||
686 | mov ecx, 16 |
||
687 | @@: |
||
688 | lodsb |
||
689 | test al, al |
||
690 | jz @f |
||
691 | stosb |
||
692 | loop @b |
||
693 | @@: |
||
694 | mov dword [edi], '.obj' |
||
695 | mov byte [edi+4], 0 |
||
696 | stdcall load_file, edx |
||
697 | |||
698 | test eax, eax |
||
699 | jz .exit |
||
700 | |||
701 | mov [coff], eax |
||
702 | |||
703 | movzx ecx, [eax+CFH.nSections] |
||
704 | xor ebx, ebx |
||
705 | |||
706 | lea edx, [eax+20] |
||
707 | @@: |
||
708 | add ebx, [edx+CFS.SizeOfRawData] |
||
709 | add ebx, 15 |
||
710 | and ebx, not 15 |
||
711 | add edx, COFF_SECTION_SIZE |
||
712 | dec ecx |
||
713 | jnz @B |
||
714 | mov [img_size], ebx |
||
715 | |||
716 | stdcall kernel_alloc, ebx |
||
717 | test eax, eax |
||
718 | jz .fail |
||
719 | mov [img_base], eax |
||
720 | |||
721 | mov edi, eax |
||
722 | xor eax, eax |
||
723 | mov ecx, [img_size] |
||
724 | add ecx, 4095 |
||
725 | and ecx, not 4095 |
||
726 | shr ecx, 2 |
||
727 | cld |
||
728 | rep stosd |
||
729 | |||
730 | mov edx, [coff] |
||
731 | movzx ebx, [edx+CFH.nSections] |
||
732 | mov edi, [img_base] |
||
733 | lea eax, [edx+20] |
||
734 | @@: |
||
735 | mov [eax+CFS.VirtualAddress], edi |
||
736 | mov esi, [eax+CFS.PtrRawData] |
||
737 | test esi, esi |
||
738 | jnz .copy |
||
739 | add edi, [eax+CFS.SizeOfRawData] |
||
740 | jmp .next |
||
741 | .copy: |
||
742 | add esi, edx |
||
743 | mov ecx, [eax+CFS.SizeOfRawData] |
||
744 | cld |
||
745 | rep movsb |
||
746 | .next: |
||
747 | add edi, 15 |
||
748 | and edi, not 15 |
||
749 | add eax, COFF_SECTION_SIZE |
||
750 | dec ebx |
||
751 | jnz @B |
||
752 | |||
753 | mov ebx, [edx+CFH.pSymTable] |
||
754 | add ebx, edx |
||
755 | mov [sym], ebx |
||
756 | mov ecx, [edx+CFH.nSymbols] |
||
757 | add ecx, ecx |
||
758 | lea ecx, [ecx+ecx*8];ecx*=18 = nSymbols*CSYM_SIZE |
||
759 | add ecx, [sym] |
||
760 | mov [strings], ecx |
||
761 | |||
762 | lea ebx, [exports] |
||
763 | mov dword [ebx], kernel_export |
||
764 | mov dword [ebx+4], 0 |
||
765 | lea eax, [edx+20] |
||
766 | |||
767 | stdcall fix_coff_symbols, eax, [sym], [edx+CFH.nSymbols], \ |
||
768 | [strings], ebx |
||
769 | test eax, eax |
||
770 | jz .link_fail |
||
771 | |||
772 | mov ebx, [coff] |
||
773 | stdcall fix_coff_relocs, ebx, [sym], 0 |
||
774 | |||
775 | stdcall get_coff_sym, [sym], [ebx+CFH.nSymbols], szVersion |
||
776 | test eax, eax |
||
777 | jz .link_fail |
||
778 | |||
779 | mov eax, [eax] |
||
780 | shr eax, 16 |
||
781 | cmp eax, DRV_COMPAT |
||
782 | jb .ver_fail |
||
783 | |||
784 | cmp eax, DRV_CURRENT |
||
785 | ja .ver_fail |
||
786 | |||
787 | mov ebx, [coff] |
||
788 | stdcall get_coff_sym, [sym], [ebx+CFH.nSymbols], szSTART |
||
789 | mov [start], eax |
||
790 | |||
791 | stdcall kernel_free, [coff] |
||
792 | |||
793 | mov ebx, [start] |
||
794 | stdcall ebx, DRV_ENTRY |
||
795 | test eax, eax |
||
796 | jnz .ok |
||
797 | |||
798 | stdcall kernel_free, [img_base] |
||
799 | cmp dword [file_name+13], 'SOUN' |
||
800 | jnz @f |
||
801 | cmp dword [file_name+17], 'D.ob' |
||
802 | jnz @f |
||
803 | cmp word [file_name+21], 'j' |
||
804 | jnz @f |
||
805 | mov esi, aSis |
||
806 | jmp .redo |
||
807 | @@: |
||
808 | xor eax, eax |
||
809 | ret |
||
810 | .ok: |
||
811 | mov ebx, [img_base] |
||
812 | mov [eax+SRV.base], ebx |
||
813 | mov ecx, [start] |
||
814 | mov [eax+SRV.entry], ecx |
||
815 | ret |
||
816 | |||
817 | .ver_fail: |
||
818 | mov esi, msg_CR |
||
819 | call sys_msg_board_str |
||
820 | mov esi, [driver_name] |
||
821 | call sys_msg_board_str |
||
822 | mov esi, msg_CR |
||
823 | call sys_msg_board_str |
||
824 | mov esi, msg_version |
||
825 | call sys_msg_board_str |
||
826 | mov esi, msg_www |
||
827 | call sys_msg_board_str |
||
828 | jmp .cleanup |
||
829 | |||
830 | .link_fail: |
||
831 | mov esi, msg_module |
||
832 | call sys_msg_board_str |
||
833 | mov esi, [driver_name] |
||
834 | call sys_msg_board_str |
||
835 | mov esi, msg_CR |
||
836 | call sys_msg_board_str |
||
837 | .cleanup: |
||
838 | stdcall kernel_free, [img_base] |
||
839 | .fail: |
||
840 | stdcall kernel_free, [coff] |
||
841 | .exit: |
||
842 | xor eax, eax |
||
843 | ret |
||
844 | endp |
||
845 | |||
846 | ; in: edx -> COFF_SECTION struct |
||
847 | ; out: eax = alignment as mask for bits to drop |
||
848 | coff_get_align: |
||
849 | ; Rules: |
||
850 | ; - if alignment is not given, use default = 4K; |
||
851 | ; - if alignment is given and is no more than 4K, use it; |
||
852 | ; - if alignment is more than 4K, revert to 4K. |
||
853 | push ecx |
||
854 | mov cl, byte [edx+CFS.Characteristics+2] |
||
855 | mov eax, 1 |
||
856 | shr cl, 4 |
||
857 | dec cl |
||
858 | js .default |
||
859 | cmp cl, 12 |
||
860 | jbe @f |
||
861 | .default: |
||
862 | mov cl, 12 |
||
863 | @@: |
||
864 | shl eax, cl |
||
865 | pop ecx |
||
866 | dec eax |
||
867 | ret |
||
868 | |||
869 | align 4 |
||
870 | proc load_library stdcall, file_name:dword |
||
871 | locals |
||
872 | fullname rb 260 |
||
873 | fileinfo rb 40 |
||
874 | coff dd ? |
||
875 | img_base dd ? |
||
876 | endl |
||
877 | |||
878 | cli |
||
879 | |||
880 | ; resolve file name |
||
881 | mov ebx, [file_name] |
||
882 | lea edi, [fullname+1] |
||
883 | mov byte [edi-1], '/' |
||
884 | stdcall get_full_file_name, edi, 259 |
||
885 | test al, al |
||
886 | jz .fail |
||
887 | |||
888 | ; scan for required DLL in list of already loaded for this process, |
||
889 | ; ignore timestamp |
||
890 | mov esi, [CURRENT_TASK] |
||
891 | shl esi, 8 |
||
892 | lea edi, [fullname] |
||
893 | mov ebx, [esi+SLOT_BASE+APPDATA.dlls_list_ptr] |
||
894 | test ebx, ebx |
||
895 | jz .not_in_process |
||
896 | mov esi, [ebx+HDLL.fd] |
||
897 | .scan_in_process: |
||
898 | cmp esi, ebx |
||
899 | jz .not_in_process |
||
900 | mov eax, [esi+HDLL.parent] |
||
901 | add eax, DLLDESCR.name |
||
902 | stdcall strncmp, eax, edi, -1 |
||
903 | test eax, eax |
||
904 | jnz .next_in_process |
||
905 | ; simple variant: load DLL which is already loaded in this process |
||
906 | ; just increment reference counters and return address of exports table |
||
907 | inc [esi+HDLL.refcount] |
||
908 | mov ecx, [esi+HDLL.parent] |
||
909 | inc [ecx+DLLDESCR.refcount] |
||
910 | mov eax, [ecx+DLLDESCR.exports] |
||
911 | sub eax, [ecx+DLLDESCR.defaultbase] |
||
912 | add eax, [esi+HDLL.base] |
||
913 | ret |
||
914 | .next_in_process: |
||
915 | mov esi, [esi+HDLL.fd] |
||
916 | jmp .scan_in_process |
||
917 | .not_in_process: |
||
918 | |||
919 | ; scan in full list, compare timestamp |
||
920 | lea eax, [fileinfo] |
||
921 | stdcall get_fileinfo, edi, eax |
||
922 | test eax, eax |
||
923 | jnz .fail |
||
924 | mov esi, [dll_list.fd] |
||
925 | .scan_for_dlls: |
||
926 | cmp esi, dll_list |
||
927 | jz .load_new |
||
928 | lea eax, [esi+DLLDESCR.name] |
||
929 | stdcall strncmp, eax, edi, -1 |
||
930 | test eax, eax |
||
931 | jnz .continue_scan |
||
932 | .test_prev_dll: |
||
933 | mov eax, dword [fileinfo+24]; last modified time |
||
934 | mov edx, dword [fileinfo+28]; last modified date |
||
935 | cmp dword [esi+DLLDESCR.timestamp], eax |
||
936 | jnz .continue_scan |
||
937 | cmp dword [esi+DLLDESCR.timestamp+4], edx |
||
938 | jz .dll_already_loaded |
||
939 | .continue_scan: |
||
940 | mov esi, [esi+DLLDESCR.fd] |
||
941 | jmp .scan_for_dlls |
||
942 | |||
943 | ; new DLL |
||
944 | .load_new: |
||
945 | ; load file |
||
946 | stdcall load_file, edi |
||
947 | test eax, eax |
||
948 | jz .fail |
||
949 | mov [coff], eax |
||
950 | mov dword [fileinfo+32], ebx |
||
951 | |||
952 | ; allocate DLLDESCR struct; size is DLLDESCR.sizeof plus size of DLL name |
||
953 | mov esi, edi |
||
954 | mov ecx, -1 |
||
955 | xor eax, eax |
||
956 | repnz scasb |
||
957 | not ecx |
||
958 | lea eax, [ecx+DLLDESCR.sizeof] |
||
959 | push ecx |
||
960 | call malloc |
||
961 | pop ecx |
||
962 | test eax, eax |
||
963 | jz .fail_and_free_coff |
||
964 | ; save timestamp |
||
965 | lea edi, [eax+DLLDESCR.name] |
||
966 | rep movsb |
||
967 | mov esi, eax |
||
968 | mov eax, dword [fileinfo+24] |
||
969 | mov dword [esi+DLLDESCR.timestamp], eax |
||
970 | mov eax, dword [fileinfo+28] |
||
971 | mov dword [esi+DLLDESCR.timestamp+4], eax |
||
972 | ; initialize DLLDESCR struct |
||
973 | and dword [esi+DLLDESCR.refcount], 0; no HDLLs yet; later it will be incremented |
||
974 | mov [esi+DLLDESCR.fd], dll_list |
||
975 | mov eax, [dll_list.bk] |
||
976 | mov [dll_list.bk], esi |
||
977 | mov [esi+DLLDESCR.bk], eax |
||
978 | mov [eax+DLLDESCR.fd], esi |
||
979 | |||
980 | ; calculate size of loaded DLL |
||
981 | mov edx, [coff] |
||
982 | movzx ecx, [edx+CFH.nSections] |
||
983 | xor ebx, ebx |
||
984 | |||
985 | add edx, 20 |
||
986 | @@: |
||
987 | call coff_get_align |
||
988 | add ebx, eax |
||
989 | not eax |
||
990 | and ebx, eax |
||
991 | add ebx, [edx+CFS.SizeOfRawData] |
||
992 | add edx, COFF_SECTION_SIZE |
||
993 | dec ecx |
||
994 | jnz @B |
||
995 | ; it must be nonzero and not too big |
||
996 | mov [esi+DLLDESCR.size], ebx |
||
997 | test ebx, ebx |
||
998 | jz .fail_and_free_dll |
||
999 | cmp ebx, MAX_DEFAULT_DLL_ADDR-MIN_DEFAULT_DLL_ADDR |
||
1000 | ja .fail_and_free_dll |
||
1001 | ; allocate memory for kernel-side image |
||
1002 | stdcall kernel_alloc, ebx |
||
1003 | test eax, eax |
||
1004 | jz .fail_and_free_dll |
||
1005 | mov [esi+DLLDESCR.data], eax |
||
1006 | ; calculate preferred base address |
||
1007 | add ebx, 0x1FFF |
||
1008 | and ebx, not 0xFFF |
||
1009 | mov ecx, [dll_cur_addr] |
||
1010 | lea edx, [ecx+ebx] |
||
1011 | cmp edx, MAX_DEFAULT_DLL_ADDR |
||
1012 | jb @f |
||
1013 | mov ecx, MIN_DEFAULT_DLL_ADDR |
||
1014 | lea edx, [ecx+ebx] |
||
1015 | @@: |
||
1016 | mov [esi+DLLDESCR.defaultbase], ecx |
||
1017 | mov [dll_cur_addr], edx |
||
1018 | |||
1019 | ; copy sections and set correct values for VirtualAddress'es in headers |
||
1020 | push esi |
||
1021 | mov edx, [coff] |
||
1022 | movzx ebx, [edx+CFH.nSections] |
||
1023 | mov edi, eax |
||
1024 | add edx, 20 |
||
1025 | cld |
||
1026 | @@: |
||
1027 | call coff_get_align |
||
1028 | add ecx, eax |
||
1029 | add edi, eax |
||
1030 | not eax |
||
1031 | and ecx, eax |
||
1032 | and edi, eax |
||
1033 | mov [edx+CFS.VirtualAddress], ecx |
||
1034 | add ecx, [edx+CFS.SizeOfRawData] |
||
1035 | mov esi, [edx+CFS.PtrRawData] |
||
1036 | push ecx |
||
1037 | mov ecx, [edx+CFS.SizeOfRawData] |
||
1038 | test esi, esi |
||
1039 | jnz .copy |
||
1040 | xor eax, eax |
||
1041 | rep stosb |
||
1042 | jmp .next |
||
1043 | .copy: |
||
1044 | add esi, [coff] |
||
1045 | rep movsb |
||
1046 | .next: |
||
1047 | pop ecx |
||
1048 | add edx, COFF_SECTION_SIZE |
||
1049 | dec ebx |
||
1050 | jnz @B |
||
1051 | pop esi |
||
1052 | |||
1053 | ; save some additional data from COFF file |
||
1054 | ; later we will use COFF header, headers for sections and symbol table |
||
1055 | ; and also relocations table for all sections |
||
1056 | mov edx, [coff] |
||
1057 | mov ebx, [edx+CFH.pSymTable] |
||
1058 | mov edi, dword [fileinfo+32] |
||
1059 | sub edi, ebx |
||
1060 | jc .fail_and_free_data |
||
1061 | mov [esi+DLLDESCR.symbols_lim], edi |
||
1062 | add ebx, edx |
||
1063 | movzx ecx, [edx+CFH.nSections] |
||
1064 | lea ecx, [ecx*5] |
||
1065 | lea edi, [edi+ecx*8+20] |
||
1066 | add edx, 20 |
||
1067 | @@: |
||
1068 | movzx eax, [edx+CFS.NumReloc] |
||
1069 | lea eax, [eax*5] |
||
1070 | lea edi, [edi+eax*2] |
||
1071 | add edx, COFF_SECTION_SIZE |
||
1072 | sub ecx, 5 |
||
1073 | jnz @b |
||
1074 | stdcall kernel_alloc, edi |
||
1075 | test eax, eax |
||
1076 | jz .fail_and_free_data |
||
1077 | mov edx, [coff] |
||
1078 | movzx ecx, [edx+CFH.nSections] |
||
1079 | lea ecx, [ecx*5] |
||
1080 | lea ecx, [ecx*2+5] |
||
1081 | mov [esi+DLLDESCR.coff_hdr], eax |
||
1082 | push esi |
||
1083 | mov esi, edx |
||
1084 | mov edi, eax |
||
1085 | rep movsd |
||
1086 | pop esi |
||
1087 | mov [esi+DLLDESCR.symbols_ptr], edi |
||
1088 | push esi |
||
1089 | mov ecx, [edx+CFH.nSymbols] |
||
1090 | mov [esi+DLLDESCR.symbols_num], ecx |
||
1091 | mov ecx, [esi+DLLDESCR.symbols_lim] |
||
1092 | mov esi, ebx |
||
1093 | rep movsb |
||
1094 | pop esi |
||
1095 | mov ebx, [esi+DLLDESCR.coff_hdr] |
||
1096 | push esi |
||
1097 | movzx eax, [edx+CFH.nSections] |
||
1098 | lea edx, [ebx+20] |
||
1099 | @@: |
||
1100 | movzx ecx, [edx+CFS.NumReloc] |
||
1101 | lea ecx, [ecx*5] |
||
1102 | mov esi, [edx+CFS.PtrReloc] |
||
1103 | mov [edx+CFS.PtrReloc], edi |
||
1104 | sub [edx+CFS.PtrReloc], ebx |
||
1105 | add esi, [coff] |
||
1106 | shr ecx, 1 |
||
1107 | rep movsd |
||
1108 | adc ecx, ecx |
||
1109 | rep movsw |
||
1110 | add edx, COFF_SECTION_SIZE |
||
1111 | dec eax |
||
1112 | jnz @b |
||
1113 | pop esi |
||
1114 | |||
1115 | ; fixup symbols |
||
1116 | mov edx, ebx |
||
1117 | mov eax, [ebx+CFH.nSymbols] |
||
1118 | add edx, 20 |
||
1119 | mov ecx, [esi+DLLDESCR.symbols_num] |
||
1120 | lea ecx, [ecx*9] |
||
1121 | add ecx, ecx |
||
1122 | add ecx, [esi+DLLDESCR.symbols_ptr] |
||
1123 | |||
1124 | stdcall fix_coff_symbols, edx, [esi+DLLDESCR.symbols_ptr], eax, \ |
||
1125 | ecx, 0 |
||
1126 | ; test eax, eax |
||
1127 | ; jnz @F |
||
1128 | ; |
||
1129 | ;@@: |
||
1130 | |||
1131 | stdcall get_coff_sym, [esi+DLLDESCR.symbols_ptr], [ebx+CFH.nSymbols], szEXPORTS |
||
1132 | test eax, eax |
||
1133 | jnz @F |
||
1134 | |||
1135 | stdcall get_coff_sym, [esi+DLLDESCR.symbols_ptr], [ebx+CFH.nSymbols], sz_EXPORTS |
||
1136 | @@: |
||
1137 | mov [esi+DLLDESCR.exports], eax |
||
1138 | |||
1139 | ; fix relocs in the hidden copy in kernel memory to default address |
||
1140 | ; it is first fix; usually this will be enough, but second fix |
||
1141 | ; can be necessary if real load address will not equal assumption |
||
1142 | mov eax, [esi+DLLDESCR.data] |
||
1143 | sub eax, [esi+DLLDESCR.defaultbase] |
||
1144 | stdcall fix_coff_relocs, ebx, [esi+DLLDESCR.symbols_ptr], eax |
||
1145 | |||
1146 | stdcall kernel_free, [coff] |
||
1147 | |||
1148 | .dll_already_loaded: |
||
1149 | inc [esi+DLLDESCR.refcount] |
||
1150 | push esi |
||
1151 | call init_heap |
||
1152 | pop esi |
||
1153 | |||
1154 | mov edi, [esi+DLLDESCR.size] |
||
1155 | stdcall user_alloc_at, [esi+DLLDESCR.defaultbase], edi |
||
1156 | test eax, eax |
||
1157 | jnz @f |
||
1158 | stdcall user_alloc, edi |
||
1159 | test eax, eax |
||
1160 | jz .fail_and_dereference |
||
1161 | @@: |
||
1162 | mov [img_base], eax |
||
1163 | mov eax, HDLL.sizeof |
||
1164 | call malloc |
||
1165 | test eax, eax |
||
1166 | jz .fail_and_free_user |
||
1167 | mov ebx, [CURRENT_TASK] |
||
1168 | shl ebx, 5 |
||
1169 | mov edx, [CURRENT_TASK+ebx+TASKDATA.pid] |
||
1170 | mov [eax+HDLL.pid], edx |
||
1171 | push eax |
||
1172 | call init_dlls_in_thread |
||
1173 | pop ebx |
||
1174 | test eax, eax |
||
1175 | jz .fail_and_free_user |
||
1176 | mov edx, [eax+HDLL.fd] |
||
1177 | mov [ebx+HDLL.fd], edx |
||
1178 | mov [ebx+HDLL.bk], eax |
||
1179 | mov [eax+HDLL.fd], ebx |
||
1180 | mov [edx+HDLL.bk], ebx |
||
1181 | mov eax, ebx |
||
1182 | mov ebx, [img_base] |
||
1183 | mov [eax+HDLL.base], ebx |
||
1184 | mov [eax+HDLL.size], edi |
||
1185 | mov [eax+HDLL.refcount], 1 |
||
1186 | mov [eax+HDLL.parent], esi |
||
1187 | mov edx, ebx |
||
1188 | shr edx, 12 |
||
1189 | or dword [page_tabs+(edx-1)*4], DONT_FREE_BLOCK |
||
1190 | ; copy entries of page table from kernel-side image to usermode |
||
1191 | ; use copy-on-write for user-mode image, so map as readonly |
||
1192 | xor edi, edi |
||
1193 | mov ecx, [esi+DLLDESCR.data] |
||
1194 | shr ecx, 12 |
||
1195 | .map_pages_loop: |
||
1196 | mov eax, [page_tabs+ecx*4] |
||
1197 | and eax, not 0xFFF |
||
1198 | or al, PG_USER |
||
1199 | xchg eax, [page_tabs+edx*4] |
||
1200 | test al, 1 |
||
1201 | jz @f |
||
1202 | call free_page |
||
1203 | @@: |
||
1204 | invlpg [ebx+edi] |
||
1205 | inc ecx |
||
1206 | inc edx |
||
1207 | add edi, 0x1000 |
||
1208 | cmp edi, [esi+DLLDESCR.size] |
||
1209 | jb .map_pages_loop |
||
1210 | |||
1211 | ; if real user-mode base is not equal to preferred base, relocate image |
||
1212 | sub ebx, [esi+DLLDESCR.defaultbase] |
||
1213 | jz @f |
||
1214 | stdcall rebase_coff, [esi+DLLDESCR.coff_hdr], [esi+DLLDESCR.symbols_ptr], ebx |
||
1215 | @@: |
||
1216 | |||
1217 | mov eax, [esi+DLLDESCR.exports] |
||
1218 | sub eax, [esi+DLLDESCR.defaultbase] |
||
1219 | add eax, [img_base] |
||
1220 | ret |
||
1221 | .fail_and_free_data: |
||
1222 | stdcall kernel_free, [esi+DLLDESCR.data] |
||
1223 | .fail_and_free_dll: |
||
1224 | mov eax, esi |
||
1225 | call free |
||
1226 | .fail_and_free_coff: |
||
1227 | stdcall kernel_free, [coff] |
||
1228 | .fail: |
||
1229 | xor eax, eax |
||
1230 | ret |
||
1231 | .fail_and_free_user: |
||
1232 | stdcall user_free, [img_base] |
||
1233 | .fail_and_dereference: |
||
1234 | mov eax, 1 ; delete 1 reference |
||
1235 | call dereference_dll |
||
1236 | xor eax, eax |
||
1237 | ret |
||
1238 | endp |
||
1239 | |||
1240 | ; initialize [APPDATA.dlls_list_ptr] for given thread |
||
1241 | ; DLL is per-process object, so APPDATA.dlls_list_ptr must be |
||
1242 | ; kept in sync for all threads of one process. |
||
1243 | ; out: eax = APPDATA.dlls_list_ptr if all is OK, |
||
1244 | ; NULL if memory allocation failed |
||
1245 | init_dlls_in_thread: |
||
1246 | mov ebx, [current_slot] |
||
1247 | mov eax, [ebx+APPDATA.dlls_list_ptr] |
||
1248 | test eax, eax |
||
1249 | jnz .ret |
||
1250 | push [ebx+APPDATA.dir_table] |
||
1251 | mov eax, 8 |
||
1252 | call malloc |
||
1253 | pop edx |
||
1254 | test eax, eax |
||
1255 | jz .ret |
||
1256 | mov [eax], eax |
||
1257 | mov [eax+4], eax |
||
1258 | mov ecx, [TASK_COUNT] |
||
1259 | mov ebx, SLOT_BASE+256 |
||
1260 | .set: |
||
1261 | cmp [ebx+APPDATA.dir_table], edx |
||
1262 | jnz @f |
||
1263 | mov [ebx+APPDATA.dlls_list_ptr], eax |
||
1264 | @@: |
||
1265 | add ebx, 256 |
||
1266 | dec ecx |
||
1267 | jnz .set |
||
1268 | .ret: |
||
1269 | ret |
||
1270 | |||
1271 | ; in: eax = number of references to delete, esi -> DLLDESCR struc |
||
1272 | dereference_dll: |
||
1273 | sub [esi+DLLDESCR.refcount], eax |
||
1274 | jnz .ret |
||
1275 | mov eax, [esi+DLLDESCR.fd] |
||
1276 | mov edx, [esi+DLLDESCR.bk] |
||
1277 | mov [eax+DLLDESCR.bk], edx |
||
1278 | mov [edx+DLLDESCR.fd], eax |
||
1279 | stdcall kernel_free, [esi+DLLDESCR.coff_hdr] |
||
1280 | stdcall kernel_free, [esi+DLLDESCR.data] |
||
1281 | mov eax, esi |
||
1282 | call free |
||
1283 | .ret: |
||
1284 | ret |
||
1285 | |||
1286 | destroy_hdll: |
||
1287 | push ebx ecx esi edi |
||
1288 | push eax |
||
1289 | mov ebx, [eax+HDLL.base] |
||
1290 | mov esi, [eax+HDLL.parent] |
||
1291 | mov edx, [esi+DLLDESCR.size] |
||
1292 | ; The following actions require the context of application where HDLL is mapped. |
||
1293 | ; However, destroy_hdll can be called in the context of OS thread when |
||
1294 | ; cleaning up objects created by the application which is destroyed. |
||
1295 | ; So remember current cr3 and set it to page table of target. |
||
1296 | mov eax, [ecx+APPDATA.dir_table] |
||
1297 | ; Because we cheat with cr3, disable interrupts: task switch would restore |
||
1298 | ; page table from APPDATA of current thread. |
||
1299 | ; Also set [current_slot] because it is used by user_free. |
||
1300 | pushf |
||
1301 | cli |
||
1302 | push [current_slot] |
||
1303 | mov [current_slot], ecx |
||
1304 | mov ecx, cr3 |
||
1305 | push ecx |
||
1306 | mov cr3, eax |
||
1307 | push ebx ; argument for user_free |
||
1308 | mov eax, ebx |
||
1309 | shr ebx, 12 |
||
1310 | push ebx |
||
1311 | mov esi, [esi+DLLDESCR.data] |
||
1312 | shr esi, 12 |
||
1313 | .unmap_loop: |
||
1314 | push eax |
||
1315 | mov eax, 2 |
||
1316 | xchg eax, [page_tabs+ebx*4] |
||
1317 | mov ecx, [page_tabs+esi*4] |
||
1318 | and eax, not 0xFFF |
||
1319 | and ecx, not 0xFFF |
||
1320 | cmp eax, ecx |
||
1321 | jz @f |
||
1322 | call free_page |
||
1323 | @@: |
||
1324 | pop eax |
||
1325 | invlpg [eax] |
||
1326 | add eax, 0x1000 |
||
1327 | inc ebx |
||
1328 | inc esi |
||
1329 | sub edx, 0x1000 |
||
1330 | ja .unmap_loop |
||
1331 | pop ebx |
||
1332 | and dword [page_tabs+(ebx-1)*4], not DONT_FREE_BLOCK |
||
1333 | call user_free |
||
1334 | ; Restore context. |
||
1335 | pop eax |
||
1336 | mov cr3, eax |
||
1337 | pop [current_slot] |
||
1338 | popf |
||
1339 | ; Ok, cheating is done. |
||
1340 | pop eax |
||
1341 | push eax |
||
1342 | mov esi, [eax+HDLL.parent] |
||
1343 | mov eax, [eax+HDLL.refcount] |
||
1344 | call dereference_dll |
||
1345 | pop eax |
||
1346 | mov edx, [eax+HDLL.bk] |
||
1347 | mov ebx, [eax+HDLL.fd] |
||
1348 | mov [ebx+HDLL.bk], edx |
||
1349 | mov [edx+HDLL.fd], ebx |
||
1350 | call free |
||
1351 | pop edi esi ecx ebx |
||
1352 | ret |
||
1353 | |||
1354 | ; ecx -> APPDATA for slot, esi = dlls_list_ptr |
||
1355 | destroy_all_hdlls: |
||
1356 | test esi, esi |
||
1357 | jz .ret |
||
1358 | .loop: |
||
1359 | mov eax, [esi+HDLL.fd] |
||
1360 | cmp eax, esi |
||
1361 | jz free |
||
1362 | call destroy_hdll |
||
1363 | jmp .loop |
||
1364 | .ret: |
||
1365 | ret |
||
1366 | |||
1367 | align 4 |
||
1368 | stop_all_services: |
||
1369 | push ebp |
||
1370 | mov edx, [srv.fd] |
||
1371 | .next: |
||
1372 | cmp edx, srv.fd-SRV_FD_OFFSET |
||
1373 | je .done |
||
1374 | cmp [edx+SRV.magic], ' SRV' |
||
1375 | jne .next |
||
1376 | cmp [edx+SRV.size], SRV.sizeof |
||
1377 | jne .next |
||
1378 | |||
1379 | mov ebx, [edx+SRV.entry] |
||
1380 | mov edx, [edx+SRV.fd] |
||
1381 | test ebx, ebx |
||
1382 | jz .next |
||
1383 | |||
1384 | push edx |
||
1385 | mov ebp, esp |
||
1386 | push 0 |
||
1387 | push -1 |
||
1388 | call ebx |
||
1389 | mov esp, ebp |
||
1390 | pop edx |
||
1391 | jmp .next |
||
1392 | .done: |
||
1393 | pop ebp |
||
1394 | ret |
||
1395 | |||
1396 | ; param |
||
1397 | ; eax= size |
||
1398 | ; ebx= pid |
||
1399 | |||
1400 | align 4 |
||
1401 | create_kernel_object: |
||
1402 | |||
1403 | push ebx |
||
1404 | call malloc |
||
1405 | pop ebx |
||
1406 | test eax, eax |
||
1407 | jz .fail |
||
1408 | |||
1409 | mov ecx, [current_slot] |
||
1410 | add ecx, APP_OBJ_OFFSET |
||
1411 | |||
1412 | pushfd |
||
1413 | cli |
||
1414 | mov edx, [ecx+APPOBJ.fd] |
||
1415 | mov [eax+APPOBJ.fd], edx |
||
1416 | mov [eax+APPOBJ.bk], ecx |
||
1417 | mov [eax+APPOBJ.pid], ebx |
||
1418 | |||
1419 | mov [ecx+APPOBJ.fd], eax |
||
1420 | mov [edx+APPOBJ.bk], eax |
||
1421 | popfd |
||
1422 | .fail: |
||
1423 | ret |
||
1424 | |||
1425 | ; param |
||
1426 | ; eax= object |
||
1427 | |||
1428 | align 4 |
||
1429 | destroy_kernel_object: |
||
1430 | |||
1431 | pushfd |
||
1432 | cli |
||
1433 | mov ebx, [eax+APPOBJ.fd] |
||
1434 | mov ecx, [eax+APPOBJ.bk] |
||
1435 | mov [ebx+APPOBJ.bk], ecx |
||
1436 | mov [ecx+APPOBJ.fd], ebx |
||
1437 | popfd |
||
1438 | |||
1439 | xor edx, edx ;clear common header |
||
1440 | mov [eax], edx |
||
1441 | mov [eax+4], edx |
||
1442 | mov [eax+8], edx |
||
1443 | mov [eax+12], edx |
||
1444 | mov [eax+16], edx |
||
1445 | |||
1446 | call free ;release object memory |
||
1447 | ret |