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Atmosphere/emummc/source/nx/cache.s
2022-03-23 09:22:22 -07:00

128 lines
1.6 KiB
ArmAsm
Vendored

/**
* @file cache.s
* @copyright libnx Authors
*/
.macro CODE_BEGIN name
.section .text.\name, "ax", %progbits
.global \name
.type \name, %function
.align 2
.cfi_startproc
\name:
.endm
.macro CODE_END
.cfi_endproc
.endm
CODE_BEGIN armDCacheFlush
add x1, x1, x0
mrs x8, CTR_EL0
lsr x8, x8, #16
and x8, x8, #0xf
mov x9, #4
lsl x9, x9, x8
sub x10, x9, #1
bic x8, x0, x10
mov x10, x1
mov w1, #1
mrs x0, tpidrro_el0
strb w1, [x0, #0x104]
armDCacheFlush_L0:
dc civac, x8
add x8, x8, x9
cmp x8, x10
bcc armDCacheFlush_L0
dsb sy
strb wzr, [x0, #0x104]
ret
CODE_END
CODE_BEGIN armDCacheClean
add x1, x1, x0
mrs x8, CTR_EL0
lsr x8, x8, #16
and x8, x8, #0xf
mov x9, #4
lsl x9, x9, x8
sub x10, x9, #1
bic x8, x0, x10
mov x10, x1
mov w1, #1
mrs x0, tpidrro_el0
strb w1, [x0, #0x104]
armDCacheClean_L0:
dc cvac, x8
add x8, x8, x9
cmp x8, x10
bcc armDCacheClean_L0
dsb sy
strb wzr, [x0, #0x104]
ret
CODE_END
CODE_BEGIN armICacheInvalidate
add x1, x1, x0
mrs x8, CTR_EL0
and x8, x8, #0xf
mov x9, #4
lsl x9, x9, x8
sub x10, x9, #1
bic x8, x0, x10
mov x10, x1
mov w1, #1
mrs x0, tpidrro_el0
strb w1, [x0, #0x104]
armICacheInvalidate_L0:
ic ivau, x8
add x8, x8, x9
cmp x8, x10
bcc armICacheInvalidate_L0
dsb sy
strb wzr, [x0, #0x104]
ret
CODE_END
CODE_BEGIN armDCacheZero
add x1, x1, x0
mrs x8, CTR_EL0
lsr x8, x8, #16
and x8, x8, #0xf
mov x9, #4
lsl x9, x9, x8
sub x10, x9, #1
bic x8, x0, x10
mov x10, x1
mov w1, #1
mrs x0, tpidrro_el0
strb w1, [x0, #0x104]
armDCacheZero_L0:
dc zva, x8
add x8, x8, x9
cmp x8, x10
bcc armDCacheZero_L0
dsb sy
strb wzr, [x0, #0x104]
ret
CODE_END