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smp: move thread_Yield to Assembly

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Edgaru089 2021-11-11 01:49:27 +08:00
parent a8ed090450
commit 9eeb9c8632
2 changed files with 13 additions and 5 deletions
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5
smp/kthread.c
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@ -85,11 +85,6 @@ int smp_thread_Nice(smp_thread_ID id, int newnice) {
return oldnice;
}
void smp_thread_Yield() {
__smp_PauseTicker = true;
asm volatile("int $0x28"); // TODO This is just quick and dirty to get into the scheduler
}
void smp_thread_Sleep(int ticks) {
INTERRUPT_DISABLE;
__smp_Current[0]->lastTick = __smp_Now + ticks;

13
smp/kthread_switch_asm.S
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@ -6,6 +6,7 @@ extrn __smp_Now
public __smp_IntSwitch_LastState
public __smp_IntSwitch
public __smp_Switch_Idle
public smp_thread_Yield
section '.bss' writable
@ -27,6 +28,18 @@ __smp_IntSwitch_LastState:
section '.text' executable
; sysvx64abi smp_thread_Yield()
;
; Sets __smp_PauseTicker.
; Pushes SS, RSP, RFLAGS, CS, RIP into the stack as Qwords,
; like what the CPU does on execption,
; and jumps to __smp_IntSwitch.
smp_thread_Yield:
mov byte [__smp_PauseTicker], 1
int 0x28
ret
; interrupt_handler smp_IntSwitch()
;
; Called from a timer interrupt.