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kern: KConditionVariable::SignalImpl

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Michael Scire 2020-07-22 03:29:27 -07:00 • committed by SciresM
parent 7aa3120f60
commit 632a75eee7
4 changed files with 80 additions and 1 deletions
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28
libraries/libmesosphere/source/arch/arm64/kern_userspace_memory_access_asm.s
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@ -428,6 +428,34 @@ _ZN3ams4kern4arch5arm6415UserspaceAccess20ClearMemorySize32BitEPv:
mov x0, #1
ret
/* ams::kern::arch::arm64::UserspaceAccess::UpdateLockAtomic(u32 *out, u32 *address, u32 if_zero, u32 new_orr_mask) */
.section .text._ZN3ams4kern4arch5arm6415UserspaceAccess16UpdateLockAtomicEPjS4_jj, "ax", %progbits
.global _ZN3ams4kern4arch5arm6415UserspaceAccess16UpdateLockAtomicEPjS4_jj
.type _ZN3ams4kern4arch5arm6415UserspaceAccess16UpdateLockAtomicEPjS4_jj, %function
.balign 0x10
_ZN3ams4kern4arch5arm6415UserspaceAccess16UpdateLockAtomicEPjS4_jj:
/* Load the value from the address. */
ldaxr w4, [x1]
/* Orr in the new mask. */
orr w5, w4, w3
/* If the value is zero, use the if_zero value, otherwise use the newly orr'd value. */
cmp w4, wzr
csel w5, w2, w5, eq
/* Try to store. */
stlxr w6, w5, [x1]
/* If we failed to store, try again. */
cbnz w6, _ZN3ams4kern4arch5arm6415UserspaceAccess16UpdateLockAtomicEPjS4_jj
/* We're done. */
str w4, [x0]
mov x0, #1
ret
/* ams::kern::arch::arm64::UserspaceAccess::UpdateIfEqualAtomic(s32 *out, s32 *address, s32 compare_value, s32 new_value) */
.section .text._ZN3ams4kern4arch5arm6415UserspaceAccess19UpdateIfEqualAtomicEPiS4_ii, "ax", %progbits
.global _ZN3ams4kern4arch5arm6415UserspaceAccess19UpdateIfEqualAtomicEPiS4_ii