|
Last change
on this file since 1015 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 | |
|---|
| 1 | /* |
|---|
| 2 | * trap test: check that a we can generate a trap from FPE instruction |
|---|
| 3 | */ |
|---|
| 4 | #include <registers.h> |
|---|
| 5 | #include <misc.h> |
|---|
| 6 | |
|---|
| 7 | .text |
|---|
| 8 | .globl _start |
|---|
| 9 | _start: |
|---|
| 10 | .set noreorder |
|---|
| 11 | la k0, TTY_BASE |
|---|
| 12 | la k1, EXIT_BASE |
|---|
| 13 | la sp, 0x00400000 - 16 |
|---|
| 14 | |
|---|
| 15 | PRINT(startstr) |
|---|
| 16 | |
|---|
| 17 | /* reset cop0 status (keep BEV), enable cop1 */ |
|---|
| 18 | lui a0, 0x2040; |
|---|
| 19 | mtc0 a0, COP0_STATUS |
|---|
| 20 | /* enable COP1 exceptions */ |
|---|
| 21 | li a0, 0x0f80 |
|---|
| 22 | ctc1 a0, $31 |
|---|
| 23 | #if 0 |
|---|
| 24 | li a0, 0xf000 |
|---|
| 25 | ctc1 a0, $26 |
|---|
| 26 | #endif |
|---|
| 27 | la a0, div1 |
|---|
| 28 | lwc1 $f2, 0(a0) |
|---|
| 29 | la a0, div2 |
|---|
| 30 | lwc1 $f0, 0(a0) |
|---|
| 31 | div.s $f0, $f2, $f0 |
|---|
| 32 | cfc1 a0, $31 |
|---|
| 33 | PRINTX |
|---|
| 34 | PUTCHAR('\n') |
|---|
| 35 | EXIT(2) |
|---|
| 36 | |
|---|
| 37 | .globl excep |
|---|
| 38 | excep: |
|---|
| 39 | .set noreorder |
|---|
| 40 | PRINT(statusstr) |
|---|
| 41 | mfc0 a0, COP0_STATUS |
|---|
| 42 | PRINTX |
|---|
| 43 | |
|---|
| 44 | PRINT(causestr) |
|---|
| 45 | mfc0 a0, COP0_CAUSE |
|---|
| 46 | PRINTX |
|---|
| 47 | |
|---|
| 48 | PRINT(pcstr) |
|---|
| 49 | mfc0 a0, COP0_EXPC |
|---|
| 50 | PRINTX |
|---|
| 51 | |
|---|
| 52 | PRINT(badvastr) |
|---|
| 53 | mfc0 a0, COP_0_BADVADDR |
|---|
| 54 | PRINTX |
|---|
| 55 | PUTCHAR('\n') |
|---|
| 56 | #we should end there |
|---|
| 57 | EXIT(0) |
|---|
| 58 | |
|---|
| 59 | .rodata: |
|---|
| 60 | statusstr: .ascii "status \0" |
|---|
| 61 | causestr: .ascii " cause \0" |
|---|
| 62 | pcstr: .ascii " pc \0" |
|---|
| 63 | badvastr: .ascii " badva \0" |
|---|
| 64 | startstr: .ascii "start\n\0" |
|---|
| 65 | usrstr: .ascii "usrmode\n\0" |
|---|
| 66 | |
|---|
| 67 | .org EXCEP_ADDRESS - BOOT_ADDRESS |
|---|
| 68 | .globl evect |
|---|
| 69 | evect: |
|---|
| 70 | j excep |
|---|
| 71 | nop |
|---|
| 72 | .data |
|---|
| 73 | .word MAGIC1 |
|---|
| 74 | testval: |
|---|
| 75 | .word MAGIC2 |
|---|
| 76 | .globl div1 |
|---|
| 77 | div1: |
|---|
| 78 | .float 10.0 |
|---|
| 79 | .globl div2 |
|---|
| 80 | div2: |
|---|
| 81 | .float 0.0 |
|---|
Note: See
TracBrowser
for help on using the repository browser.
