projects / qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| d65f0831 MW |
1 | .text |
| 2 | .global _start | |
| 3 | ||
| 4 | _start: | |
| 5 | _reset_handler: | |
| 6 | xor r0, r0, r0 | |
| 7 | mvhi r1, hi(_start) | |
| 8 | ori r1, r1, lo(_start) | |
| 9 | wcsr eba, r1 | |
| 10 | wcsr deba, r1 | |
| 11 | bi _main | |
| 12 | nop | |
| 13 | nop | |
| 14 | ||
| 15 | _breakpoint_handler: | |
| 16 | ori r25, r25, 1 | |
| 17 | addi ra, ba, 4 | |
| 18 | ret | |
| 19 | nop | |
| 20 | nop | |
| 21 | nop | |
| 22 | nop | |
| 23 | nop | |
| 24 | ||
| 25 | _instruction_bus_error_handler: | |
| 26 | ori r25, r25, 2 | |
| 27 | addi ra, ea, 4 | |
| 28 | ret | |
| 29 | nop | |
| 30 | nop | |
| 31 | nop | |
| 32 | nop | |
| 33 | nop | |
| 34 | ||
| 35 | _watchpoint_handler: | |
| 36 | ori r25, r25, 4 | |
| 37 | addi ra, ba, 4 | |
| 38 | ret | |
| 39 | nop | |
| 40 | nop | |
| 41 | nop | |
| 42 | nop | |
| 43 | nop | |
| 44 | ||
| 45 | _data_bus_error_handler: | |
| 46 | ori r25, r25, 8 | |
| 47 | addi ra, ea, 4 | |
| 48 | ret | |
| 49 | nop | |
| 50 | nop | |
| 51 | nop | |
| 52 | nop | |
| 53 | nop | |
| 54 | ||
| 55 | _divide_by_zero_handler: | |
| 56 | ori r25, r25, 16 | |
| 57 | addi ra, ea, 4 | |
| 58 | ret | |
| 59 | nop | |
| 60 | nop | |
| 61 | nop | |
| 62 | nop | |
| 63 | nop | |
| 64 | ||
| 65 | _interrupt_handler: | |
| 66 | ori r25, r25, 32 | |
| 67 | addi ra, ea, 4 | |
| 68 | ret | |
| 69 | nop | |
| 70 | nop | |
| 71 | nop | |
| 72 | nop | |
| 73 | nop | |
| 74 | ||
| 75 | _system_call_handler: | |
| 76 | ori r25, r25, 64 | |
| 77 | addi ra, ea, 4 | |
| 78 | ret | |
| 79 | nop | |
| 80 | nop | |
| 81 | nop | |
| 82 | nop | |
| 83 | nop | |
| 84 |