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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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27
lab/user/testbss.c Normal file
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// test reads and writes to a large bss
#include <inc/lib.h>
#define ARRAYSIZE (1024*1024)
uint32_t bigarray[ARRAYSIZE];
void
umain(int argc, char **argv)
{
int i;
cprintf("Making sure bss works right...\n");
for (i = 0; i < ARRAYSIZE; i++)
if (bigarray[i] != 0)
panic("bigarray[%d] isn't cleared!\n", i);
for (i = 0; i < ARRAYSIZE; i++)
bigarray[i] = i;
for (i = 0; i < ARRAYSIZE; i++)
if (bigarray[i] != i)
panic("bigarray[%d] didn't hold its value!\n", i);
cprintf("Yes, good. Now doing a wild write off the end...\n");
bigarray[ARRAYSIZE+1024] = 0;
panic("SHOULD HAVE TRAPPED!!!");
}