1 #include "syscall.h"
2 #include <arch/arch.h>
3 #include <common/errno.h>
4 #include <common/fcntl.h>
5 #include <common/string.h>
6 #include <mm/slab.h>
7 #include <process/process.h>
8
9 #if ARCH(I386) || ARCH(X86_64)
10 // 导出系统调用入口函数，定义在entry.S中
11 extern void syscall_int(void);
12
13 /**
14 * @brief 通过中断进入系统调用
15 *
16 * @param syscall_id
17 * @param arg0
18 * @param arg1
19 * @param arg2
20 * @param arg3
21 * @param arg4
22 * @param arg5
23 * @param arg6
24 * @param arg7
25 * @return long
26 */
27
enter_syscall_int(ul syscall_id,ul arg0,ul arg1,ul arg2,ul arg3,ul arg4,ul arg5)28 long enter_syscall_int(ul syscall_id, ul arg0, ul arg1, ul arg2, ul arg3,
29 ul arg4, ul arg5) {
30 long err_code;
31 __asm__ __volatile__("movq %2, %%rdi \n\t"
32 "movq %3, %%rsi \n\t"
33 "movq %4, %%rdx \n\t"
34 "movq %5, %%r10 \n\t"
35 "movq %6, %%r8 \n\t"
36 "movq %7, %%r9 \n\t"
37 "int $0x80 \n\t"
38 : "=a"(err_code)
39 : "a"(syscall_id), "m"(arg0), "m"(arg1), "m"(arg2),
40 "m"(arg3), "m"(arg4), "m"(arg5)
41 : "memory", "r8", "r9", "r10", "rdi", "rsi", "rdx");
42
43 return err_code;
44 }
45
46 #else
enter_syscall_int(ul syscall_id,ul arg0,ul arg1,ul arg2,ul arg3,ul arg4,ul arg5)47 long enter_syscall_int(ul syscall_id, ul arg0, ul arg1, ul arg2, ul arg3,
48 ul arg4, ul arg5) {
49 while (1) {
50 /* code */
51 }
52 }
53
54 #endif
55