DragonOS/kernel/syscall/syscall.h

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#pragma once
#include "../common/glib.h"
#include "../common/kprint.h"
#include "../process/ptrace.h"
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#include <common/unistd.h>
// 定义最大系统调用数量
#define MAX_SYSTEM_CALL_NUM 256
#define ESYSCALL_NOT_EXISTS 1
typedef unsigned long (*system_call_t)(struct pt_regs *regs);
extern void ret_from_system_call(void); // 导出从系统调用返回的函数定义在entry.S
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extern system_call_t system_call_table[MAX_SYSTEM_CALL_NUM];
/**
* @brief
*
*/
void syscall_init();
/**
* @brief
*
* @param syscall_id id
* @return long
*/
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long enter_syscall(ul syscall_id, ul arg0, ul arg1, ul arg2, ul arg3, ul arg4, ul arg5, ul arg6, ul arg7);
long enter_syscall_int(ul syscall_id, ul arg0, ul arg1, ul arg2, ul arg3, ul arg4, ul arg5, ul arg6, ul arg7);
/**
* @brief
*
* @param regs 3
* @return ul
*/
ul system_call_not_exists(struct pt_regs *regs)
{
kerror("System call [ ID #%d ] not exists.", regs->rax);
return ESYSCALL_NOT_EXISTS;
}
/**
* @brief
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*
* arg1和arg2均为0时
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*
* @param regs
* @param arg0
* @param arg1
* @param arg2
* @return ul
*/
ul sys_printf(struct pt_regs *regs);
ul sys_ahci_end_req(struct pt_regs *regs);
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// 系统调用的内核入口程序
void do_syscall_int(struct pt_regs *regs, unsigned long error_code);