****************************
1: what is bde?(in bootsect.s)
2: what is the big-kernel?(in setup.s)
3: what is ramdisk?(in setup.s)
4: why define some data at the end of the program,such as
"cmp setup_sig1,#SIG1" ( I mean "setup_sig1","#SIG1") ( in setup.S)
what is the use of ".bss" ,".sect" which can be found at the end of
the file.
5: how it define setup_sig1 or 2, how it is written?
6: mov ax,#0xe801 int 0x15: what is it doing?
7: realmode_swtch is not a procedure,oh? but why some place call it?(in setup.s)
8: what is the use of a20?
9: what is GPIO?( in /arch/i386/kernel/setup.c)
****************************
10: what is "_end" in (/arch/i386/kernel/setup.c)
there are "_end" ,"_text",something else,I think it sign the position of
the kernel,but I can not prove it.
11: How is the init_task?
I mean how it run up?
13: what is vmlinux.lds(/arch/i386/)
14: what does this line mean? (in /include/linux/sched.h)
*t=(struct task_struct *)tarray_freelist;
tarray_freelist=t;
is it malocing the space?
Thanks a lot.
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