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35 | .text |
35 | .text |
36 | 36 | ||
37 | .global xen_callback |
37 | .global xen_callback |
38 | .global xen_failsafe_callback |
38 | .global xen_failsafe_callback |
39 | .global enable_l_apic_in_msr |
39 | .global enable_l_apic_in_msr |
40 | .global interrupt_handlers |
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41 | .global memcpy |
40 | .global memcpy |
42 | .global memcpy_from_uspace |
41 | .global memcpy_from_uspace |
43 | .global memcpy_from_uspace_failover_address |
42 | .global memcpy_from_uspace_failover_address |
44 | .global memcpy_to_uspace |
43 | .global memcpy_to_uspace |
45 | .global memcpy_to_uspace_failover_address |
44 | .global memcpy_to_uspace_failover_address |
Line 121... | Line 120... | ||
121 | orl $(0xfee00000),%eax |
120 | orl $(0xfee00000),%eax |
122 | wrmsr |
121 | wrmsr |
123 | 122 | ||
124 | pop %eax |
123 | pop %eax |
125 | ret |
124 | ret |
126 | - | ||
127 | # Clear nested flag |
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128 | # overwrites %ecx |
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129 | .macro CLEAR_NT_FLAG |
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130 | pushfl |
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131 | pop %ecx |
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132 | and $0xffffbfff,%ecx |
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133 | push %ecx |
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134 | popfl |
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135 | .endm |
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136 | - | ||
137 | ## Declare interrupt handlers |
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138 | # |
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139 | # Declare interrupt handlers for n interrupt |
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140 | # vectors starting at vector i. |
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141 | # |
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142 | # The handlers setup data segment registers |
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143 | # and call exc_dispatch(). |
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144 | # |
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145 | #define INTERRUPT_ALIGN 64 |
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146 | .macro handler i n |
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147 | - | ||
148 | .ifeq \i-0x30 # Syscall handler |
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149 | push %ds |
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150 | push %es |
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151 | push %fs |
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152 | push %gs |
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153 | - | ||
154 | # Push arguments on stack |
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155 | push %edi |
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156 | push %esi |
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157 | push %edx |
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158 | push %ecx |
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159 | push %eax |
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160 | - | ||
161 | # we must fill the data segment registers |
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162 | movw $16,%ax |
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163 | movw %ax,%ds |
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164 | movw %ax,%es |
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165 | - | ||
166 | sti |
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167 | - | ||
168 | call syscall_handler # syscall_handler(ax,cx,dx,si,di) |
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169 | cli |
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170 | addl $20, %esp # clean-up of parameters |
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171 | - | ||
172 | pop %gs |
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173 | pop %fs |
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174 | pop %es |
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175 | pop %ds |
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176 | - | ||
177 | CLEAR_NT_FLAG |
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178 | iret |
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179 | .else |
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180 | /* |
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181 | * This macro distinguishes between two versions of ia32 exceptions. |
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182 | * One version has error word and the other does not have it. |
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183 | * The latter version fakes the error word on the stack so that the |
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184 | * handlers and istate_t can be the same for both types. |
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185 | */ |
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186 | .iflt \i-32 |
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187 | .if (1 << \i) & ERROR_WORD_INTERRUPT_LIST |
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188 | /* |
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189 | * With error word, do nothing |
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190 | */ |
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191 | .else |
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192 | /* |
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193 | * Version without error word, |
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194 | */ |
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195 | subl $4, %esp |
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196 | .endif |
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197 | .else |
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198 | /* |
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199 | * Version without error word, |
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200 | */ |
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201 | subl $4, %esp |
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202 | .endif |
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203 | - | ||
204 | push %ds |
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205 | push %es |
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206 | push %fs |
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207 | push %gs |
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208 | - | ||
209 | #ifdef CONFIG_DEBUG_ALLREGS |
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210 | push %ebx |
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211 | push %ebp |
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212 | push %edi |
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213 | push %esi |
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214 | #else |
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215 | sub $16, %esp |
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216 | #endif |
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217 | push %edx |
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218 | push %ecx |
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219 | push %eax |
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220 | - | ||
221 | # we must fill the data segment registers |
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222 | movw $16,%ax |
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223 | movw %ax,%ds |
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224 | movw %ax,%es |
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225 | - | ||
226 | pushl %esp # *istate |
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227 | pushl $(\i) # intnum |
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228 | call exc_dispatch # excdispatch(intnum, *istate) |
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229 | addl $8,%esp # Clear arguments from stack |
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230 | - | ||
231 | CLEAR_NT_FLAG # Modifies %ecx |
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232 | - | ||
233 | pop %eax |
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234 | pop %ecx |
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235 | pop %edx |
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236 | #ifdef CONFIG_DEBUG_ALLREGS |
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237 | pop %esi |
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238 | pop %edi |
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239 | pop %ebp |
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240 | pop %ebx |
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241 | #else |
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242 | add $16, %esp |
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243 | #endif |
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244 | - | ||
245 | pop %gs |
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246 | pop %fs |
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247 | pop %es |
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248 | pop %ds |
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249 | - | ||
250 | addl $4,%esp # Skip error word, no matter whether real or fake. |
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251 | iret |
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252 | .endif |
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253 | - | ||
254 | .align INTERRUPT_ALIGN |
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255 | .if (\n-\i)-1 |
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256 | handler "(\i+1)",\n |
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257 | .endif |
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258 | .endm |
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259 | - | ||
260 | # keep in sync with pm.h !!! |
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261 | IDT_ITEMS=64 |
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262 | .align INTERRUPT_ALIGN |
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263 | interrupt_handlers: |
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264 | h_start: |
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265 | handler 0 IDT_ITEMS |
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266 | h_end: |
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267 | - | ||
268 | .data |
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269 | .global interrupt_handler_size |
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270 | - | ||
271 | interrupt_handler_size: .long (h_end-h_start)/IDT_ITEMS |
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