calmsacibis995
70 lines
1.4 KiB
C
70 lines
1.4 KiB
C
/* tlb valid test
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*/
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#ident "$Revision: 1.14 $"
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#include <sys/types.h>
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#include <sys/sbd.h>
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#include <setjmp.h>
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#include <fault.h>
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#include <libsk.h>
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#include "tlb.h"
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#include "IP30/cache/cache.h"
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#if R4000 || R10000 /* R4k and R10k tlb tests pnly! */
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/* This routine loads entries into the TLB with the
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valid bit turned off. This should cause an exception
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when the virtual address is accessed ...
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*/
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/*ARGSUSED*/
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int
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tlbvalid(__psunsigned_t *pt, u_int *not_used1, u_int *not_used2)
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{
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int error = 0;
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jmp_buf faultbuf;
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int i;
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tlbpurge ();
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for (i = 0; i < NTLBENTRIES; i++) {
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u_char *addr;
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addr = (u_char *)(K2BASE + i * PAGESIZE * 2);
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/* write tlb entries with valid bit turned off */
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tlbwired(i, 0, (caddr_t)addr,
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(uint)((pt[i * 2] >> 6) | TLBLO_UNCACHED),
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(uint)((pt[i * 2 + 1] >> 6) | TLBLO_UNCACHED));
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/* do set up for tlb exception */
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if (setjmp(faultbuf)) {
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/* executed upon tlb exception */
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if (_badvaddr_save != (__psunsigned_t)addr) {
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msg_printf(ERR|PRCPU,
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"BadVaddr, Expected: 0x%08x, Actual: 0x%08x\n",
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addr, _badvaddr_save);
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error++;
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}
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DoEret();
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} else {
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volatile u_char bucket;
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/* do memory access to cause tlb fault */
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nofault = faultbuf;
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bucket = *(volatile u_char *)addr;
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nofault = 0;
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msg_printf(ERR|PRCPU,
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"Did not receive expected exception\n");
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error++;
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}
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invaltlb(i);
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}
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return error;
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}
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#endif /* R4k and R10k tlb tests pnly! */
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