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https://github.com/SmallPond/MIT6.828_OS.git
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42 lines
684 B
ArmAsm
42 lines
684 B
ArmAsm
#include "syscall.h"
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#include "traps.h"
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#define SYSCALL(name) \
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.globl name; \
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name: \
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movl $SYS_ ## name, %eax; \
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int $T_SYSCALL; \
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ret
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/*
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* 什么时候执行这段？
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* 应该系统启动过程就会执行，注册一个函数！
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* 当调用name()时，自动进入这个函数，再转向sys_name()函数
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*/
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SYSCALL(fork)
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SYSCALL(exit)
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SYSCALL(wait)
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SYSCALL(pipe)
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SYSCALL(read)
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SYSCALL(write)
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SYSCALL(close)
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SYSCALL(kill)
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SYSCALL(exec)
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SYSCALL(open)
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SYSCALL(mknod)
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SYSCALL(unlink)
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SYSCALL(fstat)
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SYSCALL(link)
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SYSCALL(mkdir)
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SYSCALL(chdir)
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SYSCALL(dup)
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SYSCALL(dup2)
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SYSCALL(getpid)
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SYSCALL(sbrk)
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SYSCALL(sleep)
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SYSCALL(uptime)
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SYSCALL(date)
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SYSCALL(alarm)
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