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kern: fix minor assembly bugs, avoid unnecessary function call in KScheduler hotloop

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This commit is contained in:
Michael Scire 2021-10-28 19:16:23 -07:00
parent 92321ccbc8
commit d1f3c4904b
6 changed files with 20 additions and 16 deletions
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4
mesosphere/kernel/source/arch/arm64/kern_exception_handlers_asm.s
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@ -376,7 +376,7 @@ _ZN3ams4kern4arch5arm6430EL1SynchronousExceptionHandlerEv:
stp x26, x27, [sp, #(EXCEPTION_CONTEXT_X26_X27)]
stp x28, x29, [sp, #(EXCEPTION_CONTEXT_X28_X29)]
mrs x20, sp_el0
ldr x20, [sp]
mrs x21, elr_el1
mrs x22, spsr_el1
mrs x23, tpidr_el0
@ -529,7 +529,7 @@ _ZN3ams4kern4arch5arm6421EL1SystemErrorHandlerEv:
stp x26, x27, [sp, #(EXCEPTION_CONTEXT_X26_X27)]
stp x28, x29, [sp, #(EXCEPTION_CONTEXT_X28_X29)]
mrs x20, sp_el0
ldr x20, [sp]
mrs x21, elr_el1
mrs x22, spsr_el1
mrs x23, tpidr_el0

4
mesosphere/kernel/source/arch/arm64/kern_k_scheduler_asm.s
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@ -183,9 +183,7 @@ _ZN3ams4kern10KScheduler12ScheduleImplEv:
/* Get the highest priority thread's context, and save it. */
/* ams::kern::KThread::GetContextForSchedulerLoop() */
mov x0, x21
bl _ZN3ams4kern7KThread26GetContextForSchedulerLoopEv
mov x22, x0
add x22, x21, #(THREAD_THREAD_CONTEXT)
/* Prepare to try to acquire the context lock. */
add x1, x22, #(THREAD_CONTEXT_LOCKED)