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/*
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* define the syscall numbers of PKE OS kernel.
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*/
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#ifndef _SYSCALL_H_
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#define _SYSCALL_H_
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// syscalls of PKE OS kernel. append below if adding new syscalls.
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#define SYS_user_base 64
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#define SYS_user_print (SYS_user_base + 0)
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#define SYS_user_exit (SYS_user_base + 1)
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// added @lab2_2
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#define SYS_user_allocate_page (SYS_user_base + 2)
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#define SYS_user_free_page (SYS_user_base + 3)
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// added @lab3_1
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#define SYS_user_fork (SYS_user_base + 4)
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#define SYS_user_yield (SYS_user_base + 5)
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// added @lab4_1
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#define SYS_user_open (SYS_user_base + 17)
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#define SYS_user_read (SYS_user_base + 18)
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#define SYS_user_write (SYS_user_base + 19)
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#define SYS_user_lseek (SYS_user_base + 20)
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#define SYS_user_stat (SYS_user_base + 21)
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#define SYS_user_disk_stat (SYS_user_base + 22)
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#define SYS_user_close (SYS_user_base + 23)
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// added @lab4_2
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#define SYS_user_opendir (SYS_user_base + 24)
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#define SYS_user_readdir (SYS_user_base + 25)
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#define SYS_user_mkdir (SYS_user_base + 26)
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#define SYS_user_closedir (SYS_user_base + 27)
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// added @lab4_3
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#define SYS_user_link (SYS_user_base + 28)
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#define SYS_user_unlink (SYS_user_base + 29)
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long do_syscall(long a0, long a1, long a2, long a3, long a4, long a5, long a6, long a7);
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#endif
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