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2024-02-06 21:10:51 +08:00
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#ifndef X86_64_SYSCALL
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#define X86_64_SYSCALL 1
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#include <types.h>
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extern void *system_calls_table[256];
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2024-02-18 03:53:54 +08:00
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/**
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* @brief 系统调用规范
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* @addindex x86_64
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*
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* 系统调用使用的寄存器：
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* rax - 调用号
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* rbx - 系统调用程序保留
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* rcx - rip寄存器缓存
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* rdi - 系统调用程序保留
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* rdx - 参数1
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* r8 - 参数2
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* r9 - 参数3
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* r10 - 参数4
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* r11 - rflags寄存器缓存
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* r12 - 参数5
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* r13 - 参数6
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* r14 - 参数7
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* r15 - 参数8
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*
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* 系统调用时，使用内核主堆栈。
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*/
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2024-02-06 21:10:51 +08:00
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2024-02-18 03:53:54 +08:00
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/**
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* @name set_kernel_stack_cache
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* @addindex 平台依赖函数 x86_64
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*
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* ```c
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* void set_kernel_stack_cache(usize stack);
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* ```
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*
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* 将堆栈缓存设为一个`stack`。
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*/
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2024-02-06 21:10:51 +08:00
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extern void set_kernel_stack_cache(usize stack);
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2024-02-18 03:53:54 +08:00
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/**
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* @name return_from_systemcall
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* @addindex 平台依赖函数 x86_64
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*
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* ```c
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* void return_from_systemcall();
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* ```
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*
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* 执行`sysret`指令。
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*/
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extern void return_from_systemcall();
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2024-02-06 21:10:51 +08:00
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#endif
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