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| Rev 3022 | Rev 4055 | ||
|---|---|---|---|
| Line 39... | Line 39... | ||
| 39 | /* |
39 | /* |
| 40 | * This is the assembly language version of our _memcpy() generated by gcc. |
40 | * This is the assembly language version of our _memcpy() generated by gcc. |
| 41 | */ |
41 | */ |
| 42 | .global memcpy |
42 | .global memcpy |
| 43 | memcpy: |
43 | memcpy: |
| - | 44 | mov %o0, %o3 ! save dst |
|
| 44 | add %o1, 7, %g1 |
45 | add %o1, 7, %g1 |
| 45 | and %g1, -8, %g1 |
46 | and %g1, -8, %g1 |
| 46 | cmp %o1, %g1 |
47 | cmp %o1, %g1 |
| 47 | be,pn %xcc, 3f |
48 | be,pn %xcc, 3f |
| 48 | add %o0, 7, %g1 |
49 | add %o0, 7, %g1 |
| Line 57... | Line 58... | ||
| 57 | stb %g1, [%g3 + %o0] |
58 | stb %g1, [%g3 + %o0] |
| 58 | bne,pt %xcc, 1b |
59 | bne,pt %xcc, 1b |
| 59 | mov %g2, %g3 |
60 | mov %g2, %g3 |
| 60 | 2: |
61 | 2: |
| 61 | jmp %o7 + 8 ! exit point |
62 | jmp %o7 + 8 ! exit point |
| 62 | mov %o1, %o0 |
63 | mov %o3, %o0 |
| 63 | 3: |
64 | 3: |
| 64 | and %g1, -8, %g1 |
65 | and %g1, -8, %g1 |
| 65 | cmp %o0, %g1 |
66 | cmp %o0, %g1 |
| 66 | bne,pt %xcc, 0b |
67 | bne,pt %xcc, 0b |
| 67 | mov 0, %g3 |
68 | mov 0, %g3 |
| Line 91... | Line 92... | ||
| 91 | cmp %o2, %g2 |
92 | cmp %o2, %g2 |
| 92 | bne,pt %xcc, 6b |
93 | bne,pt %xcc, 6b |
| 93 | mov %g2, %g3 |
94 | mov %g2, %g3 |
| 94 | 95 | ||
| 95 | jmp %o7 + 8 ! exit point |
96 | jmp %o7 + 8 ! exit point |
| 96 | mov %o1, %o0 |
97 | mov %o3, %o0 |
| 97 | 98 | ||
| 98 | /* |
99 | /* |
| 99 | * Almost the same as memcpy() except the loads are from userspace. |
100 | * Almost the same as memcpy() except the loads are from userspace. |
| 100 | */ |
101 | */ |
| 101 | .global memcpy_from_uspace |
102 | .global memcpy_from_uspace |
| 102 | memcpy_from_uspace: |
103 | memcpy_from_uspace: |
| - | 104 | mov %o0, %o3 ! save dst |
|
| 103 | add %o1, 7, %g1 |
105 | add %o1, 7, %g1 |
| 104 | and %g1, -8, %g1 |
106 | and %g1, -8, %g1 |
| 105 | cmp %o1, %g1 |
107 | cmp %o1, %g1 |
| 106 | be,pn %xcc, 3f |
108 | be,pn %xcc, 3f |
| 107 | add %o0, 7, %g1 |
109 | add %o0, 7, %g1 |
| Line 116... | Line 118... | ||
| 116 | stb %g1, [%g3 + %o0] |
118 | stb %g1, [%g3 + %o0] |
| 117 | bne,pt %xcc, 1b |
119 | bne,pt %xcc, 1b |
| 118 | mov %g2, %g3 |
120 | mov %g2, %g3 |
| 119 | 2: |
121 | 2: |
| 120 | jmp %o7 + 8 ! exit point |
122 | jmp %o7 + 8 ! exit point |
| 121 | mov %o1, %o0 |
123 | mov %o3, %o0 |
| 122 | 3: |
124 | 3: |
| 123 | and %g1, -8, %g1 |
125 | and %g1, -8, %g1 |
| 124 | cmp %o0, %g1 |
126 | cmp %o0, %g1 |
| 125 | bne,pt %xcc, 0b |
127 | bne,pt %xcc, 0b |
| 126 | mov 0, %g3 |
128 | mov 0, %g3 |
| Line 150... | Line 152... | ||
| 150 | cmp %o2, %g2 |
152 | cmp %o2, %g2 |
| 151 | bne,pt %xcc, 6b |
153 | bne,pt %xcc, 6b |
| 152 | mov %g2, %g3 |
154 | mov %g2, %g3 |
| 153 | 155 | ||
| 154 | jmp %o7 + 8 ! exit point |
156 | jmp %o7 + 8 ! exit point |
| 155 | mov %o1, %o0 |
157 | mov %o3, %o0 |
| 156 | 158 | ||
| 157 | /* |
159 | /* |
| 158 | * Almost the same as memcpy() except the stores are to userspace. |
160 | * Almost the same as memcpy() except the stores are to userspace. |
| 159 | */ |
161 | */ |
| 160 | .global memcpy_to_uspace |
162 | .global memcpy_to_uspace |
| 161 | memcpy_to_uspace: |
163 | memcpy_to_uspace: |
| - | 164 | mov %o0, %o3 ! save dst |
|
| 162 | add %o1, 7, %g1 |
165 | add %o1, 7, %g1 |
| 163 | and %g1, -8, %g1 |
166 | and %g1, -8, %g1 |
| 164 | cmp %o1, %g1 |
167 | cmp %o1, %g1 |
| 165 | be,pn %xcc, 3f |
168 | be,pn %xcc, 3f |
| 166 | add %o0, 7, %g1 |
169 | add %o0, 7, %g1 |
| Line 175... | Line 178... | ||
| 175 | stba %g1, [%g3 + %o0] ASI_AIUS |
178 | stba %g1, [%g3 + %o0] ASI_AIUS |
| 176 | bne,pt %xcc, 1b |
179 | bne,pt %xcc, 1b |
| 177 | mov %g2, %g3 |
180 | mov %g2, %g3 |
| 178 | 2: |
181 | 2: |
| 179 | jmp %o7 + 8 ! exit point |
182 | jmp %o7 + 8 ! exit point |
| 180 | mov %o1, %o0 |
183 | mov %o3, %o0 |
| 181 | 3: |
184 | 3: |
| 182 | and %g1, -8, %g1 |
185 | and %g1, -8, %g1 |
| 183 | cmp %o0, %g1 |
186 | cmp %o0, %g1 |
| 184 | bne,pt %xcc, 0b |
187 | bne,pt %xcc, 0b |
| 185 | mov 0, %g3 |
188 | mov 0, %g3 |
| Line 209... | Line 212... | ||
| 209 | cmp %o2, %g2 |
212 | cmp %o2, %g2 |
| 210 | bne,pt %xcc, 6b |
213 | bne,pt %xcc, 6b |
| 211 | mov %g2, %g3 |
214 | mov %g2, %g3 |
| 212 | 215 | ||
| 213 | jmp %o7 + 8 ! exit point |
216 | jmp %o7 + 8 ! exit point |
| 214 | mov %o1, %o0 |
217 | mov %o3, %o0 |
| 215 | 218 | ||
| 216 | .global memcpy_from_uspace_failover_address |
219 | .global memcpy_from_uspace_failover_address |
| 217 | .global memcpy_to_uspace_failover_address |
220 | .global memcpy_to_uspace_failover_address |
| 218 | memcpy_from_uspace_failover_address: |
221 | memcpy_from_uspace_failover_address: |
| 219 | memcpy_to_uspace_failover_address: |
222 | memcpy_to_uspace_failover_address: |
| Line 272... | Line 275... | ||
| 272 | save %o1, -STACK_WINDOW_SAVE_AREA_SIZE, %sp |
275 | save %o1, -STACK_WINDOW_SAVE_AREA_SIZE, %sp |
| 273 | flushw |
276 | flushw |
| 274 | wrpr %g0, 0, %cleanwin ! avoid information leak |
277 | wrpr %g0, 0, %cleanwin ! avoid information leak |
| 275 | 278 | ||
| 276 | mov %i2, %o0 ! uarg |
279 | mov %i2, %o0 ! uarg |
| - | 280 | xor %o1, %o1, %o1 ! %o1 is defined to hold pcb_ptr |
|
| - | 281 | ! set it to 0 |
|
| 277 | 282 | ||
| 278 | clr %i2 |
283 | clr %i2 |
| 279 | clr %i3 |
284 | clr %i3 |
| 280 | clr %i4 |
285 | clr %i4 |
| 281 | clr %i5 |
286 | clr %i5 |