source:
trunk/softs/tests_ccvcache_v4/test_sc_update_cache/test.S
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1 | /* |
2 | * Check that lc also updates the local L1 cache. |
3 | */ |
4 | #include <registers.h> |
5 | #include <misc.h> |
6 | #include <vcache.h> |
7 | .text |
8 | .globl _start |
9 | _start: |
10 | .set noreorder |
11 | la k0, TTY_BASE |
12 | la k1, EXIT_BASE |
13 | |
14 | /* reset cop0 status (keep BEV) */ |
15 | lui a0, 0x0040; |
16 | mtc0 a0, COP0_STATUS |
17 | |
18 | /* enable caches */ |
19 | li a0, VC_TLB_EN_ICACHE | VC_TLB_EN_DCACHE |
20 | mtc2 a0, VC_TLB_EN |
21 | |
22 | /* fetch data in cache */ |
23 | la s0, myvar |
24 | lw a0, 0(s0) |
25 | /* write magic value */ |
26 | li a0, MAGIC1 |
27 | sw a0, 0(s0) |
28 | /* ll/sc another value on the same address */ |
29 | 2: |
30 | ll a0, 0(s0) |
31 | PRINTX |
32 | PUTCHAR(' ') |
33 | li a0, MAGIC2 |
34 | sc a0, 0(s0) |
35 | beqz a0, 2b |
36 | /* now check that we got the right value in cache */ |
37 | lw a0, 0(s0) |
38 | PRINTX |
39 | PUTCHAR('\n') |
40 | EXIT(0) |
41 | |
42 | .globl excep |
43 | excep: |
44 | .set noreorder |
45 | PRINT(statusstr) |
46 | mfc0 a0, COP0_STATUS |
47 | PRINTX |
48 | |
49 | PRINT(causestr) |
50 | mfc0 a0, COP0_CAUSE |
51 | PRINTX |
52 | |
53 | PRINT(pcstr) |
54 | mfc0 a0, COP0_EXPC |
55 | PRINTX |
56 | |
57 | PRINT(badvastr) |
58 | mfc0 a0, COP_0_BADVADDR |
59 | PRINTX |
60 | |
61 | PUTCHAR('\n') |
62 | /* we should not get there */ |
63 | EXIT(1) |
64 | |
65 | .rodata: |
66 | statusstr: .ascii "status \0" |
67 | causestr: .ascii " cause \0" |
68 | pcstr: .ascii " pc \0" |
69 | badvastr: .ascii " badva \0" |
70 | value: .word 0x1234abcd |
71 | string: .ascii "hello world \0" |
72 | |
73 | .org EXCEP_ADDRESS - BOOT_ADDRESS |
74 | .globl evect |
75 | evect: |
76 | j excep |
77 | nop |
78 | |
79 | .data |
80 | myvar: .word 0 |
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