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| Rev 1160 | Rev 1398 | ||
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| Line 28... | Line 28... | ||
| 28 | 28 | ||
| 29 | #include <arch/asm/regname.h> |
29 | #include <arch/asm/regname.h> |
| 30 | 30 | ||
| 31 | .text |
31 | .text |
| 32 | 32 | ||
| - | 33 | .global userspace_asm |
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| 33 | .global iret |
34 | .global iret |
| - | 35 | .global iret_syscall |
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| 34 | .global memsetb |
36 | .global memsetb |
| 35 | .global memcpy |
37 | .global memcpy |
| - | 38 | .global memcpy_from_uspace |
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| - | 39 | .global memcpy_to_uspace |
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| - | 40 | .global memcpy_from_uspace_failover_address |
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| - | 41 | .global memcpy_to_uspace_failover_address |
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| - | 42 | ||
| - | 43 | userspace_asm: |
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| - | 44 | ||
| - | 45 | # r3 = uspace_uarg |
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| - | 46 | # r4 = stack |
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| - | 47 | # r5 = entry |
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| - | 48 | ||
| - | 49 | # disable interrupts |
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| - | 50 | ||
| - | 51 | mfmsr r31 |
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| - | 52 | rlwinm r31, r31, 0, 17, 15 |
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| - | 53 | mtmsr r31 |
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| - | 54 | ||
| - | 55 | # set entry point |
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| - | 56 | ||
| - | 57 | mtsrr0 r5 |
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| - | 58 | ||
| - | 59 | # set problem state, enable interrupts |
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| - | 60 | ||
| - | 61 | ori r31, r31, msr_pr |
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| - | 62 | ori r31, r31, msr_ee |
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| - | 63 | mtsrr1 r31 |
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| - | 64 | ||
| - | 65 | # set stack |
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| - | 66 | ||
| - | 67 | mr sp, r4 |
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| - | 68 | ||
| - | 69 | # jump to userspace |
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| - | 70 | ||
| - | 71 | rfi |
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| 36 | 72 | ||
| 37 | iret: |
73 | iret: |
| 38 | lwz r3, 144(sp) |
- | |
| 39 | mtxer r3 |
- | |
| 40 | 74 | ||
| 41 | lwz r3, 140(sp) |
75 | # disable interrupts |
| 42 | mtctr r3 |
- | |
| 43 | 76 | ||
| - | 77 | mfmsr r31 |
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| - | 78 | rlwinm r31, r31, 0, 17, 15 |
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| - | 79 | mtmsr r31 |
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| - | 80 | ||
| - | 81 | lwz r0, 8(sp) |
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| - | 82 | lwz r2, 12(sp) |
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| 44 | lwz r3, 136(sp) |
83 | lwz r3, 16(sp) |
| - | 84 | lwz r4, 20(sp) |
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| - | 85 | lwz r5, 24(sp) |
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| - | 86 | lwz r6, 28(sp) |
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| - | 87 | lwz r7, 32(sp) |
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| - | 88 | lwz r8, 36(sp) |
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| - | 89 | lwz r9, 40(sp) |
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| - | 90 | lwz r10, 44(sp) |
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| - | 91 | lwz r11, 48(sp) |
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| - | 92 | lwz r13, 52(sp) |
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| - | 93 | lwz r14, 56(sp) |
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| - | 94 | lwz r15, 60(sp) |
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| - | 95 | lwz r16, 64(sp) |
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| - | 96 | lwz r17, 68(sp) |
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| - | 97 | lwz r18, 72(sp) |
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| - | 98 | lwz r19, 76(sp) |
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| - | 99 | lwz r20, 80(sp) |
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| - | 100 | lwz r21, 84(sp) |
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| - | 101 | lwz r22, 88(sp) |
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| - | 102 | lwz r23, 92(sp) |
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| - | 103 | lwz r24, 96(sp) |
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| - | 104 | lwz r25, 100(sp) |
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| - | 105 | lwz r26, 104(sp) |
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| - | 106 | lwz r27, 108(sp) |
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| - | 107 | lwz r28, 112(sp) |
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| - | 108 | lwz r29, 116(sp) |
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| - | 109 | lwz r30, 120(sp) |
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| - | 110 | lwz r31, 124(sp) |
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| - | 111 | ||
| - | 112 | lwz r12, 128(sp) |
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| 45 | mtcr r3 |
113 | mtcr r12 |
| - | 114 | ||
| - | 115 | lwz r12, 132(sp) |
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| - | 116 | mtsrr0 r12 |
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| - | 117 | ||
| - | 118 | lwz r12, 136(sp) |
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| - | 119 | mtsrr1 r12 |
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| - | 120 | ||
| - | 121 | lwz r12, 140(sp) |
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| - | 122 | mtlr r12 |
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| 46 | 123 | ||
| 47 | lwz r3, 132(sp) |
124 | lwz r12, 144(sp) |
| 48 | mtlr r3 |
125 | mtctr r12 |
| 49 | - | ||
| 50 | lwz r3, 128(sp) |
- | |
| 51 | mtspr srr1, r3 |
- | |
| 52 | - | ||
| 53 | lwz r3, 124(sp) |
- | |
| 54 | mtspr srr0, r3 |
- | |
| 55 | - | ||
| 56 | lwz r0, 0(sp) |
- | |
| 57 | lwz r2, 4(sp) |
- | |
| 58 | lwz r3, 8(sp) |
- | |
| 59 | lwz r4, 12(sp) |
- | |
| 60 | lwz r5, 16(sp) |
- | |
| 61 | lwz r6, 20(sp) |
- | |
| 62 | lwz r7, 24(sp) |
- | |
| 63 | lwz r8, 28(sp) |
- | |
| 64 | lwz r9, 32(sp) |
- | |
| 65 | lwz r10, 36(sp) |
- | |
| 66 | lwz r11, 40(sp) |
- | |
| 67 | lwz r12, 44(sp) |
- | |
| 68 | lwz r13, 48(sp) |
- | |
| 69 | lwz r14, 52(sp) |
- | |
| 70 | lwz r15, 56(sp) |
- | |
| 71 | lwz r16, 60(sp) |
- | |
| 72 | lwz r17, 64(sp) |
- | |
| 73 | lwz r18, 68(sp) |
- | |
| 74 | lwz r19, 72(sp) |
- | |
| 75 | lwz r20, 76(sp) |
- | |
| 76 | lwz r21, 80(sp) |
- | |
| 77 | lwz r22, 84(sp) |
- | |
| 78 | lwz r23, 88(sp) |
- | |
| 79 | lwz r24, 92(sp) |
- | |
| 80 | lwz r25, 96(sp) |
- | |
| 81 | lwz r26, 100(sp) |
- | |
| 82 | lwz r27, 104(sp) |
- | |
| 83 | lwz r28, 108(sp) |
- | |
| 84 | lwz r29, 112(sp) |
- | |
| 85 | lwz r30, 116(sp) |
- | |
| 86 | lwz r31, 120(sp) |
- | |
| 87 | 126 | ||
| - | 127 | lwz r12, 148(sp) |
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| - | 128 | mtxer r12 |
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| - | 129 | ||
| - | 130 | lwz r12, 152(sp) |
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| 88 | mfspr sp, sprg1 |
131 | lwz sp, 156(sp) |
| 89 | 132 | ||
| 90 | rfi |
133 | rfi |
| - | 134 | ||
| - | 135 | iret_syscall: |
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| - | 136 | ||
| - | 137 | # reset decrementer |
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| - | 138 | ||
| - | 139 | li r31, 1000 |
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| - | 140 | mtdec r31 |
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| - | 141 | ||
| - | 142 | # disable interrupts |
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| - | 143 | ||
| - | 144 | mfmsr r31 |
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| - | 145 | rlwinm r31, r31, 0, 17, 15 |
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| - | 146 | mtmsr r31 |
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| - | 147 | ||
| - | 148 | lwz r0, 8(sp) |
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| - | 149 | lwz r2, 12(sp) |
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| - | 150 | lwz r4, 20(sp) |
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| - | 151 | lwz r5, 24(sp) |
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| - | 152 | lwz r6, 28(sp) |
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| - | 153 | lwz r7, 32(sp) |
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| - | 154 | lwz r8, 36(sp) |
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| - | 155 | lwz r9, 40(sp) |
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| - | 156 | lwz r10, 44(sp) |
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| - | 157 | lwz r11, 48(sp) |
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| - | 158 | lwz r13, 52(sp) |
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| - | 159 | lwz r14, 56(sp) |
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| - | 160 | lwz r15, 60(sp) |
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| - | 161 | lwz r16, 64(sp) |
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| - | 162 | lwz r17, 68(sp) |
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| - | 163 | lwz r18, 72(sp) |
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| - | 164 | lwz r19, 76(sp) |
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| - | 165 | lwz r20, 80(sp) |
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| - | 166 | lwz r21, 84(sp) |
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| - | 167 | lwz r22, 88(sp) |
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| - | 168 | lwz r23, 92(sp) |
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| - | 169 | lwz r24, 96(sp) |
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| - | 170 | lwz r25, 100(sp) |
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| - | 171 | lwz r26, 104(sp) |
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| - | 172 | lwz r27, 108(sp) |
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| - | 173 | lwz r28, 112(sp) |
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| - | 174 | lwz r29, 116(sp) |
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| - | 175 | lwz r30, 120(sp) |
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| - | 176 | lwz r31, 124(sp) |
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| - | 177 | ||
| - | 178 | lwz r12, 128(sp) |
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| - | 179 | mtcr r12 |
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| - | 180 | ||
| - | 181 | lwz r12, 132(sp) |
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| - | 182 | mtsrr0 r12 |
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| - | 183 | ||
| - | 184 | lwz r12, 136(sp) |
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| - | 185 | mtsrr1 r12 |
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| - | 186 | ||
| - | 187 | lwz r12, 140(sp) |
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| - | 188 | mtlr r12 |
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| - | 189 | ||
| - | 190 | lwz r12, 144(sp) |
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| - | 191 | mtctr r12 |
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| - | 192 | ||
| - | 193 | lwz r12, 148(sp) |
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| - | 194 | mtxer r12 |
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| - | 195 | ||
| - | 196 | lwz r12, 152(sp) |
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| - | 197 | lwz sp, 156(sp) |
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| - | 198 | ||
| - | 199 | rfi |
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| 91 | 200 | ||
| 92 | memsetb: |
201 | memsetb: |
| 93 | rlwimi r5, r5, 8, 16, 23 |
202 | rlwimi r5, r5, 8, 16, 23 |
| 94 | rlwimi r5, r5, 16, 0, 15 |
203 | rlwimi r5, r5, 16, 0, 15 |
| 95 | 204 | ||
| Line 131... | Line 240... | ||
| 131 | bdnz 8b |
240 | bdnz 8b |
| 132 | 241 | ||
| 133 | blr |
242 | blr |
| 134 | 243 | ||
| 135 | memcpy: |
244 | memcpy: |
| - | 245 | memcpy_from_uspace: |
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| - | 246 | memcpy_to_uspace: |
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| - | 247 | ||
| 136 | srwi. r7, r5, 3 |
248 | srwi. r7, r5, 3 |
| 137 | addi r6, r3, -4 |
249 | addi r6, r3, -4 |
| 138 | addi r4, r4, -4 |
250 | addi r4, r4, -4 |
| 139 | beq 2f |
251 | beq 2f |
| 140 | 252 | ||
| Line 191... | Line 303... | ||
| 191 | subf r5, r0, r5 |
303 | subf r5, r0, r5 |
| 192 | rlwinm. r7, r5, 32-3, 3, 31 |
304 | rlwinm. r7, r5, 32-3, 3, 31 |
| 193 | beq 2b |
305 | beq 2b |
| 194 | mtctr r7 |
306 | mtctr r7 |
| 195 | b 1b |
307 | b 1b |
| - | 308 | ||
| - | 309 | memcpy_from_uspace_failover_address: |
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| - | 310 | memcpy_to_uspace_failover_address: |
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| - | 311 | b memcpy_from_uspace_failover_address |
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