| Line 34... |
Line 34... |
#include "sprs.h"
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#include "sprs.h"
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#include "except.h"
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#include "except.h"
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#include "sim-config.h"
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#include "sim-config.h"
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#include "debug.h"
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#include "debug.h"
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DEFAULT_DEBUG_CHANNEL(immu);
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extern int cont_run;
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extern int cont_run;
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/* Insn MMU */
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/* Insn MMU */
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static inline oraddr_t immu_simulate_tlb(oraddr_t virtaddr)
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static inline oraddr_t immu_simulate_tlb(oraddr_t virtaddr)
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| Line 50... |
Line 52... |
if (!(mfspr(SPR_SR) & SPR_SR_IME) || !(testsprbits(SPR_UPR, SPR_UPR_IMP))) {
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if (!(mfspr(SPR_SR) & SPR_SR_IME) || !(testsprbits(SPR_UPR, SPR_UPR_IMP))) {
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insn_ci = (virtaddr >= 0x80000000);
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insn_ci = (virtaddr >= 0x80000000);
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return virtaddr;
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return virtaddr;
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}
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}
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TRACE("IMMU enabled, checking mmu ways\n");
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/* Which set to check out? */
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/* Which set to check out? */
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set = (virtaddr / config.immu.pagesize) % config.immu.nsets;
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set = (virtaddr / config.immu.pagesize) % config.immu.nsets;
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tagaddr = (virtaddr / config.immu.pagesize) / config.immu.nsets;
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tagaddr = (virtaddr / config.immu.pagesize) / config.immu.nsets;
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vpn = virtaddr / (config.immu.pagesize * config.immu.nsets);
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vpn = virtaddr / (config.immu.pagesize * config.immu.nsets);
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| Line 64... |
Line 68... |
way = i;
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way = i;
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/* Did we find our tlb entry? */
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/* Did we find our tlb entry? */
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if (way >= 0) { /* Yes, we did. */
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if (way >= 0) { /* Yes, we did. */
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immu_stats.fetch_tlbhit++;
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immu_stats.fetch_tlbhit++;
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debug(5, "ITLB hit (virtaddr=%"PRIxADDR").\n", virtaddr);
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TRACE("ITLB hit (virtaddr=%"PRIxADDR").\n", virtaddr);
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/* Test for page fault */
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/* Test for page fault */
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if (mfspr (SPR_SR) & SPR_SR_SM) {
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if (mfspr (SPR_SR) & SPR_SR_SM) {
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if (!(mfspr (SPR_ITLBTR_BASE(way) + set) & SPR_ITLBTR_SXE))
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if (!(mfspr (SPR_ITLBTR_BASE(way) + set) & SPR_ITLBTR_SXE))
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except_handle(EXCEPT_IPF, virtaddr);
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except_handle(EXCEPT_IPF, virtaddr);
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| Line 166... |
Line 170... |
}
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}
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else {
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else {
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return(0);
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return(0);
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}
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}
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PRINTF("ERR, should never have happened\n");
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ERR("should never have happened\n");
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return(0);
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return(0);
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}
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}
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oraddr_t immu_translate(oraddr_t virtaddr)
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oraddr_t immu_translate(oraddr_t virtaddr)
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