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kern: use userspace access instructions to read from tlr

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This commit is contained in:
Michael Scire 2024-03-28 00:18:31 -07:00
parent 83b3b09e73
commit b12e89d0a9
1 changed files with 4 additions and 2 deletions
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6
libraries/libmesosphere/source/arch/arm64/svc/kern_svc_handlers_asm.s
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@ -68,7 +68,8 @@ _ZN3ams4kern4arch5arm6412SvcHandler64Ev:
/* Check if our disable count allows us to call SVCs. */ /* Check if our disable count allows us to call SVCs. */
mrs x10, tpidrro_el0 mrs x10, tpidrro_el0
ldrh w10, [x10, #(THREAD_LOCAL_REGION_DISABLE_COUNT)] add x10, x10, #(THREAD_LOCAL_REGION_DISABLE_COUNT)
ldtrh w10, [x10]
cbz w10, 1f cbz w10, 1f
/* It might not, so check the stack params to see if we must not allow the SVC. */ /* It might not, so check the stack params to see if we must not allow the SVC. */
@ -352,7 +353,8 @@ _ZN3ams4kern4arch5arm6412SvcHandler32Ev:
/* Check if our disable count allows us to call SVCs. */ /* Check if our disable count allows us to call SVCs. */
mrs x10, tpidrro_el0 mrs x10, tpidrro_el0
ldrh w10, [x10, #(THREAD_LOCAL_REGION_DISABLE_COUNT)] add x10, x10, #(THREAD_LOCAL_REGION_DISABLE_COUNT)
ldtrh w10, [x10]
cbz w10, 1f cbz w10, 1f
/* It might not, so check the stack params to see if we must not allow the SVC. */ /* It might not, so check the stack params to see if we must not allow the SVC. */