Commit | Line | Data |
---|---|---|
31cdd0c3 PM |
1 | #include <asm/ppc_asm.h> |
2 | ||
3 | /* unsigned long xmon_mfspr(sprn, default_value) */ | |
4 | _GLOBAL(xmon_mfspr) | |
5 | ld r5, .Lmfspr_table@got(r2) | |
6 | b xmon_mxspr | |
7 | ||
8 | /* void xmon_mtspr(sprn, new_value) */ | |
9 | _GLOBAL(xmon_mtspr) | |
10 | ld r5, .Lmtspr_table@got(r2) | |
11 | b xmon_mxspr | |
12 | ||
13 | /* | |
14 | * r3 = sprn | |
15 | * r4 = default or new value | |
16 | * r5 = table base | |
17 | */ | |
18 | xmon_mxspr: | |
19 | /* | |
20 | * To index into the table of mxsprs we need: | |
21 | * i = (sprn & 0x3ff) * 8 | |
22 | * or using rwlinm: | |
23 | * i = (sprn << 3) & (0x3ff << 3) | |
24 | */ | |
25 | rlwinm r3, r3, 3, 0x3ff << 3 | |
26 | add r5, r5, r3 | |
27 | mtctr r5 | |
28 | mr r3, r4 /* put default_value in r3 for mfspr */ | |
29 | bctr | |
30 | ||
31 | .Lmfspr_table: | |
32 | spr = 0 | |
33 | .rept 1024 | |
34 | mfspr r3, spr | |
35 | blr | |
36 | spr = spr + 1 | |
37 | .endr | |
38 | ||
39 | .Lmtspr_table: | |
40 | spr = 0 | |
41 | .rept 1024 | |
42 | mtspr spr, r4 | |
43 | blr | |
44 | spr = spr + 1 | |
45 | .endr |