Last change
on this file since 1027 was
520,
checked in by bouyer, 11 years ago
|
Re-add the tests; reverting previous which was done at the wrong level (sorry)
|
File size:
1.2 KB
|
Line | |
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1 | /* |
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2 | * breakpoint test: check that a breakpoint generates an exception, and we can |
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3 | * return |
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4 | */ |
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5 | #include <registers.h> |
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6 | #include <misc.h> |
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7 | |
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8 | .text |
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9 | .globl _start |
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10 | _start: |
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11 | .set noreorder |
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12 | la k0, TTY_BASE |
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13 | la k1, EXIT_BASE |
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14 | la sp, 0x00400000 - 16 |
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15 | |
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16 | PRINT(startstr) |
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17 | |
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18 | /* reset cop0 status (keep BEV) */ |
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19 | lui a0, 0x0040; |
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20 | mtc0 a0, COP0_STATUS |
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21 | nop |
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22 | nop |
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23 | nop |
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24 | break |
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25 | bne a3, zero, exit |
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26 | nop |
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27 | /* we should not get there, a3 is not 0 */ |
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28 | EXIT(2) |
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29 | exit: |
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30 | move a0, v0 |
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31 | PRINTX |
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32 | PUTCHAR(' ') |
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33 | move a0, v1 |
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34 | PRINTX |
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35 | PUTCHAR('\n') |
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36 | /* we should get there */ |
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37 | EXIT(0) |
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38 | |
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39 | .globl excep |
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40 | excep: |
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41 | .set noreorder |
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42 | PRINT(statusstr) |
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43 | mfc0 a0, COP0_STATUS |
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44 | PRINTX |
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45 | |
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46 | PRINT(causestr) |
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47 | mfc0 a0, COP0_CAUSE |
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48 | PRINTX |
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49 | |
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50 | PRINT(pcstr) |
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51 | mfc0 a0, COP0_EXPC |
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52 | PRINTX |
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53 | |
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54 | PRINT(badvastr) |
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55 | mfc0 a0, COP_0_BADVADDR |
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56 | PRINTX |
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57 | PUTCHAR('\n') |
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58 | mfc0 a0, COP0_EXPC |
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59 | addiu a0, a0, 4 |
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60 | mtc0 a0, COP0_EXPC |
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61 | li v0, MAGIC1 |
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62 | li v1, MAGIC2 |
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63 | li a3, 1 |
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64 | eret |
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65 | nop |
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66 | |
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67 | #we should not end there |
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68 | EXIT(1) |
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69 | |
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70 | .rodata: |
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71 | statusstr: .ascii "status \0" |
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72 | causestr: .ascii " cause \0" |
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73 | pcstr: .ascii " pc \0" |
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74 | badvastr: .ascii " badva \0" |
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75 | startstr: .ascii "start\n\0" |
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76 | usrstr: .ascii "usrmode\n\0" |
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77 | |
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78 | .org EXCEP_ADDRESS - BOOT_ADDRESS |
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79 | .globl evect |
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80 | evect: |
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81 | j excep |
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82 | nop |
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83 | .data |
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84 | .word MAGIC1 |
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85 | testval: |
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86 | .word MAGIC2 |
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