Last change
on this file since 576 was
232,
checked in by alain, 12 years ago
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Introducing the elementary tests for a TSAR mono-cluster
mono-processor platform with MMU using the vci_cc_vcache_v4
such as the "tsarv4_mono_mmu".
(assemby level tests written by Manuel Bouyer)
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File size:
1.5 KB
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1 | /* |
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2 | * Check that the interrupt mask in status is properly handled: |
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3 | * we generate a software-triggerted interrupt with interrupt enabled but |
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4 | * the software interrupt masked. Later we unmask it. |
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5 | */ |
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6 | #include <registers.h> |
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7 | #include <misc.h> |
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8 | |
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9 | |
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10 | .text |
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11 | .globl _start |
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12 | _start: |
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13 | .set noreorder |
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14 | la k0, TTY_BASE |
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15 | la k1, EXIT_BASE |
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16 | |
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17 | /* reset cop0 status (keep BEV), enbale interrupts but mask IM0 */ |
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18 | lui a0, 0x0040; |
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19 | ori a0, 0xfe01; |
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20 | mtc0 a0, COP0_STATUS |
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21 | |
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22 | /* reset cause, make sure IV is off */ |
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23 | mtc0 zero, COP0_CAUSE |
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24 | |
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25 | PRINT(startstr) |
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26 | |
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27 | /* generate an interrupt */ |
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28 | mfc0 a0, COP0_CAUSE |
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29 | nop |
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30 | ori a0, 0x0100 |
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31 | mtc0 a0, COP0_CAUSE |
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32 | li a0, MAGIC1 |
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33 | PRINTX |
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34 | PUTCHAR('\n') |
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35 | nop |
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36 | nop |
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37 | nop |
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38 | nop |
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39 | nop |
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40 | nop |
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41 | /* unmask the interrupt */ |
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42 | mfc0 a0, COP0_STATUS |
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43 | nop |
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44 | ori a0, 0x0100 |
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45 | mtc0 a0, COP0_STATUS |
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46 | /* we should end here after taking the exeption */ |
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47 | li a0, MAGIC2 |
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48 | PRINTX |
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49 | PUTCHAR('\n') |
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50 | EXIT(0) |
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51 | |
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52 | .globl excep |
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53 | excep: |
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54 | .set noreorder |
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55 | PRINT(statusstr) |
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56 | mfc0 a0, COP0_STATUS |
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57 | PRINTX |
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58 | |
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59 | PRINT(causestr) |
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60 | mfc0 a0, COP0_CAUSE |
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61 | PRINTX |
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62 | |
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63 | PRINT(pcstr) |
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64 | mfc0 a0, COP0_EXPC |
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65 | PRINTX |
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66 | |
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67 | PRINT(badvastr) |
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68 | mfc0 a0, COP_0_BADVADDR |
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69 | PRINTX |
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70 | |
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71 | PUTCHAR('\n') |
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72 | /* clear interrupt */ |
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73 | mfc0 a0, COP0_CAUSE |
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74 | xori a0, 0x100 |
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75 | mtc0 a0, COP0_CAUSE |
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76 | nop |
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77 | eret |
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78 | /* we should not end there */ |
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79 | EXIT(1) |
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80 | |
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81 | .rodata: |
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82 | statusstr: .ascii "status \0" |
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83 | causestr: .ascii " cause \0" |
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84 | pcstr: .ascii " pc \0" |
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85 | badvastr: .ascii " badva \0" |
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86 | startstr: .ascii "start\n\0" |
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87 | eretstr: .ascii "eret\n\0" |
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88 | |
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89 | .org EXCEP_ADDRESS - BOOT_ADDRESS |
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90 | .globl evect |
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91 | evect: |
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92 | j excep |
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93 | nop |
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94 | .data |
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95 | myvar: .word 0 |
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