diff options
Diffstat (limited to 'frontend/3ds/utils.S')
| -rw-r--r-- | frontend/3ds/utils.S | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/frontend/3ds/utils.S b/frontend/3ds/utils.S new file mode 100644 index 0000000..c8df651 --- /dev/null +++ b/frontend/3ds/utils.S @@ -0,0 +1,25 @@ + .text + .arm + .balign 4 + + .func ctr_clear_cache_kernel +ctr_clear_cache_kernel: + cpsid aif + mov r0, #0 + mcr p15, 0, r0, c7, c10, 0 @ Clean entire data cache + mcr p15, 0, r0, c7, c10, 5 @ Data Memory Barrier + mcr p15, 0, r0, c7, c5, 0 @ Invalidate entire instruction cache / Flush BTB + mcr p15, 0, r0, c7, c10, 4 @ Data Sync Barrier + bx lr + .endfunc + + @@ Clear the entire data cache / invalidate the instruction cache. Uses + @@ Rosalina svcCustomBackdoor to avoid svcBackdoor stack corruption + @@ during interrupts. + .global ctr_clear_cache + .func ctr_clear_cache +ctr_clear_cache: + ldr r0, =ctr_clear_cache_kernel + svc 0x80 @ svcCustomBackdoor + bx lr + .endfunc |