1#include <asm/ppc_asm.h> 2 3/* unsigned long xmon_mfspr(sprn, default_value) */ 4_GLOBAL(xmon_mfspr) 5 PPC_LL r5, .Lmfspr_table@got(r2) 6 b xmon_mxspr 7 8/* void xmon_mtspr(sprn, new_value) */ 9_GLOBAL(xmon_mtspr) 10 PPC_LL 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 */ 18xmon_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 46