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kern: use userspace access instructions to read from tlr

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Michael Scire authored and SciresM committed 2024-03-29 02:41:14 -07:00
1 parent 1f37fbed1d
commit cf5895e04f
1 file changed
+4 -2
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libraries/libmesosphere/source/arch/arm64/svc/kern_svc_handlers_asm.s
+4 -2
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@@ -68,7 +68,8 @@ _ZN3ams4kern4arch5arm6412SvcHandler64Ev:
/* Check if our disable count allows us to call SVCs. */
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
/* 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. */
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
/* It might not, so check the stack params to see if we must not allow the SVC. */