mirror of
https://review.haiku-os.org/haiku
synced 2025-02-05 05:14:57 +01:00
33 lines
757 B
C
33 lines
757 B
C
|
/*
|
||
|
|
* Copyright 2014, Paweł Dziepak, pdziepak@quarnos.org.
|
||
|
|
* Distributed under the terms of the MIT License.
|
||
|
|
*/
|
||
|
|
#ifndef _KERNEL_ARCH_X86_64_CPU_H
|
||
|
|
#define _KERNEL_ARCH_X86_64_CPU_H
|
||
|
|
|
||
|
|
|
||
|
|
#include <arch_thread_types.h>
|
||
|
|
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
x86_context_switch(arch_thread* oldState, arch_thread* newState)
|
||
|
|
{
|
||
|
|
asm volatile(
|
||
|
|
"pushq %%rbp;"
|
||
|
|
"movq $1f, %c[rip](%0);"
|
||
|
|
"movq %%rsp, %c[rsp](%0);"
|
||
|
|
"movq %c[rsp](%1), %%rsp;"
|
||
|
|
"jmp *%c[rip](%1);"
|
||
|
|
"1:"
|
||
|
|
"popq %%rbp;"
|
||
|
|
:
|
||
|
|
: "a" (oldState), "d" (newState),
|
||
|
|
[rsp] "i" (offsetof(arch_thread, current_stack)),
|
||
|
|
[rip] "i" (offsetof(arch_thread, instruction_pointer))
|
||
|
|
: "rbx", "rcx", "rdi", "rsi", "r8", "r9", "r10", "r11", "r12", "r13",
|
||
|
|
"r14", "r15", "memory");
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#endif // _KERNEL_ARCH_X86_64_CPU_H
|