41 lines
908 B
C
41 lines
908 B
C
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#pragma once
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#include "../main.h"
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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// State describes the stack, IP and general registers of a State.
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typedef struct {
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uint64_t rax, rbx, rcx, rdx;
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uint64_t rsi, rdi, rbp, rsp;
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uint64_t r8, r9, r10, r11;
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uint64_t r12, r13, r14, r15;
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uint64_t rflags;
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uint64_t rip;
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uint16_t ss, cs; // Stack and Code Segments
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} PACKED smp_thread_State;
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// Last program state saved/restored by IntSwitch()
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extern smp_thread_State __smp_IntSwitch_LastState;
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// Interrupt handler, defined in assembly
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void __smp_IntSwitch();
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// Copy the current thread from LastState,
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// invoke the scheduler to find a new thread,
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// copy the new thread to LastState,
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// and returns back to smp_IntSwitch, which restores the new state and IRET.
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//
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// Returns nonzero if a context switch is in fact required.
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SYSV_ABI uintptr_t __smp_Switch();
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#ifdef __cplusplus
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}
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#endif
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