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Last change
on this file since 904 was
520,
checked in by bouyer, 11 years ago
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Re-add the tests; reverting previous which was done at the wrong level (sorry)
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File size:
1.2 KB
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| Line | |
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| 1 | /* |
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| 2 | * trap test: check that a we can generate a trap from FPE instruction |
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| 3 | */ |
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| 4 | #include <registers.h> |
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| 5 | #include <misc.h> |
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| 6 | |
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| 7 | .text |
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| 8 | .globl _start |
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| 9 | _start: |
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| 10 | .set noreorder |
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| 11 | la k0, TTY_BASE |
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| 12 | la k1, EXIT_BASE |
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| 13 | la sp, 0x00400000 - 16 |
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| 14 | |
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| 15 | PRINT(startstr) |
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| 16 | |
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| 17 | /* reset cop0 status (keep BEV), enable cop1 */ |
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| 18 | lui a0, 0x2040; |
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| 19 | mtc0 a0, COP0_STATUS |
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| 20 | /* enable COP1 exceptions */ |
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| 21 | li a0, 0x0f80 |
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| 22 | ctc1 a0, $31 |
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| 23 | #if 0 |
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| 24 | li a0, 0xf000 |
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| 25 | ctc1 a0, $26 |
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| 26 | #endif |
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| 27 | la a0, div1 |
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| 28 | lwc1 $f2, 0(a0) |
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| 29 | la a0, div2 |
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| 30 | lwc1 $f0, 0(a0) |
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| 31 | div.s $f0, $f2, $f0 |
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| 32 | cfc1 a0, $31 |
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| 33 | PRINTX |
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| 34 | PUTCHAR('\n') |
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| 35 | EXIT(2) |
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| 36 | |
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| 37 | .globl excep |
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| 38 | excep: |
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| 39 | .set noreorder |
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| 40 | PRINT(statusstr) |
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| 41 | mfc0 a0, COP0_STATUS |
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| 42 | PRINTX |
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| 43 | |
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| 44 | PRINT(causestr) |
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| 45 | mfc0 a0, COP0_CAUSE |
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| 46 | PRINTX |
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| 47 | |
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| 48 | PRINT(pcstr) |
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| 49 | mfc0 a0, COP0_EXPC |
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| 50 | PRINTX |
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| 51 | |
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| 52 | PRINT(badvastr) |
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| 53 | mfc0 a0, COP_0_BADVADDR |
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| 54 | PRINTX |
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| 55 | PUTCHAR('\n') |
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| 56 | #we should end there |
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| 57 | EXIT(0) |
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| 58 | |
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| 59 | .rodata: |
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| 60 | statusstr: .ascii "status \0" |
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| 61 | causestr: .ascii " cause \0" |
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| 62 | pcstr: .ascii " pc \0" |
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| 63 | badvastr: .ascii " badva \0" |
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| 64 | startstr: .ascii "start\n\0" |
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| 65 | usrstr: .ascii "usrmode\n\0" |
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| 66 | |
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| 67 | .org EXCEP_ADDRESS - BOOT_ADDRESS |
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| 68 | .globl evect |
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| 69 | evect: |
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| 70 | j excep |
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| 71 | nop |
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| 72 | .data |
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| 73 | .word MAGIC1 |
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| 74 | testval: |
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| 75 | .word MAGIC2 |
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| 76 | .globl div1 |
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| 77 | div1: |
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| 78 | .float 10.0 |
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| 79 | .globl div2 |
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| 80 | div2: |
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| 81 | .float 0.0 |
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