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42 | .global exception_entry |
42 | .global exception_entry |
43 | 43 | ||
44 | .org 0x0 |
44 | .org 0x0 |
45 | kernel_image_start: |
45 | kernel_image_start: |
46 | tlb_refill_entry: |
46 | tlb_refill_entry: |
47 | j tlb_refill_handler |
47 | j tlb_refill_handler |
48 | nop |
48 | nop |
49 | 49 | ||
50 | .org 0x100 |
50 | .org 0x100 |
51 | cache_error_entry: |
51 | cache_error_entry: |
52 | j cache_error_handler |
52 | j cache_error_handler |
53 | nop |
53 | nop |
54 | 54 | ||
55 | .org 0x180 |
55 | .org 0x180 |
56 | exception_entry: |
56 | exception_entry: |
57 | exception_handler: |
57 | exception_handler: |
58 | sub $29, STACK_SPACE |
58 | sub $29, STACK_SPACE |
59 | REGISTERS_STORE $29 |
59 | REGISTERS_STORE $29 |
60 | 60 | ||
61 | jal exception |
61 | jal exception |
62 | nop |
62 | nop |
63 | 63 | ||
64 | REGISTERS_LOAD $29 |
64 | REGISTERS_LOAD $29 |
65 | add $29, STACK_SPACE |
65 | add $29, STACK_SPACE |
66 | 66 | ||
67 | eret |
67 | eret |
68 | 68 | ||
69 | tlb_refill_handler: |
69 | tlb_refill_handler: |
70 | sub $29, STACK_SPACE |
70 | sub $29, STACK_SPACE |
71 | REGISTERS_STORE $29 |
71 | REGISTERS_STORE $29 |
72 | 72 | ||
73 | jal tlb_refill |
73 | jal tlb_refill |
74 | nop |
74 | nop |
75 | 75 | ||
76 | REGISTERS_LOAD $29 |
76 | REGISTERS_LOAD $29 |
77 | add $29, STACK_SPACE |
77 | add $29, STACK_SPACE |
78 | 78 | ||
79 | eret |
79 | eret |
80 | 80 | ||
81 | cache_error_handler: |
81 | cache_error_handler: |
82 | sub $29, STACK_SPACE |
82 | sub $29, STACK_SPACE |
83 | REGISTERS_STORE $29 |
83 | REGISTERS_STORE $29 |
84 | 84 | ||
85 | jal cache_error |
85 | jal cache_error |
86 | nop |
86 | nop |
87 | 87 | ||
88 | REGISTERS_LOAD $29 |
88 | REGISTERS_LOAD $29 |
89 | add $29, STACK_SPACE |
89 | add $29, STACK_SPACE |
90 | 90 | ||
91 | eret |
91 | eret |