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LAB 4 IS DONE.

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winPond
2019-07-06 10:39:40 +08:00
parent 21dd0e1a51
commit e78b336ba8
113 changed files with 11622 additions and 0 deletions
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11
lab/user/badsegment.c Normal file
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// program to cause a general protection exception
#include <inc/lib.h>
void
umain(int argc, char **argv)
{
// Try to load the kernel's TSS selector into the DS register.
asm volatile("movw $0x28,%ax; movw %ax,%ds");
}