Last change
on this file since 657 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:
1.3 KB
|
Rev | Line | |
---|
[520] | 1 | /* |
---|
| 2 | * trap test: check that a trap in a delay slot is |
---|
| 3 | * properly handled |
---|
| 4 | */ |
---|
| 5 | #include <registers.h> |
---|
| 6 | #include <misc.h> |
---|
| 7 | |
---|
| 8 | .text |
---|
| 9 | .globl _start |
---|
| 10 | _start: |
---|
| 11 | .set noreorder |
---|
| 12 | la k0, TTY_BASE |
---|
| 13 | la k1, EXIT_BASE |
---|
| 14 | la sp, 0x00400000 - 16 |
---|
| 15 | |
---|
| 16 | PRINT(startstr) |
---|
| 17 | |
---|
| 18 | /* reset cop0 status (keep BEV), enable cop1 */ |
---|
| 19 | lui a0, 0x2040; |
---|
| 20 | mtc0 a0, COP0_STATUS |
---|
| 21 | |
---|
| 22 | la a0, div1 |
---|
| 23 | lwc1 $f2, 0(a0) |
---|
| 24 | la a0, div2 |
---|
| 25 | lwc1 $f0, 0(a0) |
---|
| 26 | j exit |
---|
| 27 | div.s $f0, $f0, $f2 |
---|
| 28 | /* we should not get there, */ |
---|
| 29 | EXIT(2) |
---|
| 30 | .globl exit |
---|
| 31 | exit: |
---|
| 32 | move a0, v0 |
---|
| 33 | PRINTX |
---|
| 34 | PUTCHAR(' ') |
---|
| 35 | move a0, v1 |
---|
| 36 | PRINTX |
---|
| 37 | PUTCHAR('\n') |
---|
| 38 | /* we should get there */ |
---|
| 39 | EXIT(0) |
---|
| 40 | |
---|
| 41 | .globl excep |
---|
| 42 | excep: |
---|
| 43 | .set noreorder |
---|
| 44 | PRINT(statusstr) |
---|
| 45 | mfc0 a0, COP0_STATUS |
---|
| 46 | PRINTX |
---|
| 47 | |
---|
| 48 | PRINT(causestr) |
---|
| 49 | mfc0 a0, COP0_CAUSE |
---|
| 50 | PRINTX |
---|
| 51 | |
---|
| 52 | PRINT(pcstr) |
---|
| 53 | mfc0 a0, COP0_EXPC |
---|
| 54 | PRINTX |
---|
| 55 | |
---|
| 56 | PRINT(badvastr) |
---|
| 57 | mfc0 a0, COP_0_BADVADDR |
---|
| 58 | PRINTX |
---|
| 59 | PUTCHAR('\n') |
---|
| 60 | la a0, exit |
---|
| 61 | mtc0 a0, COP0_EXPC |
---|
| 62 | li v0, MAGIC1 |
---|
| 63 | li v1, MAGIC2 |
---|
| 64 | li a3, 1 |
---|
| 65 | eret |
---|
| 66 | nop |
---|
| 67 | |
---|
| 68 | #we should not end there |
---|
| 69 | EXIT(1) |
---|
| 70 | |
---|
| 71 | .rodata: |
---|
| 72 | statusstr: .ascii "status \0" |
---|
| 73 | causestr: .ascii " cause \0" |
---|
| 74 | pcstr: .ascii " pc \0" |
---|
| 75 | badvastr: .ascii " badva \0" |
---|
| 76 | startstr: .ascii "start\n\0" |
---|
| 77 | usrstr: .ascii "usrmode\n\0" |
---|
| 78 | |
---|
| 79 | .org EXCEP_ADDRESS - BOOT_ADDRESS |
---|
| 80 | .globl evect |
---|
| 81 | evect: |
---|
| 82 | j excep |
---|
| 83 | nop |
---|
| 84 | .data |
---|
| 85 | .word MAGIC1 |
---|
| 86 | testval: |
---|
| 87 | .word MAGIC2 |
---|
| 88 | div1: |
---|
| 89 | .float 10.0 |
---|
| 90 | .globl div2 |
---|
| 91 | div2: |
---|
| 92 | .float 0.0 |
---|
Note: See
TracBrowser
for help on using the repository browser.