#define __ASM__
#include <lunaix/syscall.h>

.section .data
    /*
        注意，这里的顺序非常重要。每个系统调用在这个地址表里的索引等于其调用号。
    */
    syscall_table:
        .dc.l 0
        .dc.l dup_proc
        .dc.l schedule
        .dc.l terminate_process
        .dc.l _syscall_sbrk
        .dc.l _syscall_brk

.global syscall_hndlr

.section .text
    syscall_hndlr:
        pushl %ebp
        movl %esp, %ebp
        addl $0x8, %ebp
        movl (%ebp), %ebp

        movl  (%ebp), %eax
        cmpl  $__SYSCALL_MAX, %eax
        jb 1f
        neg   %eax
        popl  %ebp
        ret
    1:
        pushl 24(%ebp)    /* esi - #6 arg */
        pushl 20(%ebp)    /* ebp - #5 arg */
        pushl 16(%ebp)    /* edi - #4 arg */
        pushl 12(%ebp)    /* edx - #3 arg */
        pushl 8(%ebp)    /* ecx - #2 arg */
        pushl 4(%ebp)    /* ebx - #1 arg */
        shll $2, %eax
        addl $syscall_table, %eax

        call (%eax)

        addl $24, %esp

        popl %ebp
        ret