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| Rev 1860 | Rev 1864 | ||
|---|---|---|---|
| Line 148... | Line 148... | ||
| 148 | 148 | ||
| 149 | /** Switch to userspace. |
149 | /** Switch to userspace. |
| 150 | * |
150 | * |
| 151 | * %o0 Userspace entry address. |
151 | * %o0 Userspace entry address. |
| 152 | * %o1 Userspace stack pointer address. |
152 | * %o1 Userspace stack pointer address. |
| - | 153 | * %o2 Userspace address of uarg structure. |
|
| 153 | */ |
154 | */ |
| 154 | .global switch_to_userspace |
155 | .global switch_to_userspace |
| 155 | switch_to_userspace: |
156 | switch_to_userspace: |
| 156 | flushw |
157 | flushw |
| 157 | wrpr %g0, 0, %cleanwin ! avoid information leak |
158 | wrpr %g0, 0, %cleanwin ! avoid information leak |
| 158 | save %o1, -STACK_WINDOW_SAVE_AREA_SIZE, %sp |
159 | save %o1, -STACK_WINDOW_SAVE_AREA_SIZE, %sp |
| 159 | 160 | ||
| - | 161 | mov %i3, %o0 ! uarg |
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| - | 162 | ||
| 160 | clr %i2 |
163 | clr %i2 |
| 161 | clr %i3 |
164 | clr %i3 |
| 162 | clr %i4 |
165 | clr %i4 |
| 163 | clr %i5 |
166 | clr %i5 |
| 164 | clr %i6 |
167 | clr %i6 |
| Line 176... | Line 179... | ||
| 176 | */ |
179 | */ |
| 177 | wr %g0, ASI_DMMU, %asi |
180 | wr %g0, ASI_DMMU, %asi |
| 178 | ldxa [VA_SECONDARY_CONTEXT_REG] %asi, %g1 |
181 | ldxa [VA_SECONDARY_CONTEXT_REG] %asi, %g1 |
| 179 | stxa %g1, [VA_PRIMARY_CONTEXT_REG] %asi |
182 | stxa %g1, [VA_PRIMARY_CONTEXT_REG] %asi |
| 180 | flush %i7 |
183 | flush %i7 |
| - | 184 | ||
| - | 185 | /* |
|
| - | 186 | * Spills and fills will be handled by the userspace handlers. |
|
| - | 187 | */ |
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| - | 188 | wrpr %g0, WSTATE_OTHER(0) | WSTATE_NORMAL(1), %wstate |
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| 181 | 189 | ||
| 182 | done ! jump to userspace |
190 | done ! jump to userspace |