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Line 42... |
#include "stats.h"
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#include "stats.h"
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#include "except.h"
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#include "except.h"
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#include "sprs.h"
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#include "sprs.h"
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#include "misc.h"
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#include "misc.h"
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#include "sim-cmd.h"
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#include "sim-cmd.h"
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#include "pcu.h"
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struct dmmu *dmmu_state;
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struct dmmu *dmmu_state;
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/* Data MMU */
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/* Data MMU */
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Line 138... |
(dmmu->page_offset_mask));
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(dmmu->page_offset_mask));
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}
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}
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/* No, we didn't. */
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/* No, we didn't. */
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dmmu_stats.loads_tlbmiss++;
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dmmu_stats.loads_tlbmiss++;
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#if 0
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for (i = 0; i < dmmu->nways; i++)
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if (((cpu_state.sprs[SPR_DTLBMR_BASE (i) + set] & SPR_DTLBMR_LRU) >> 6) <
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minlru)
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minway = i;
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cpu_state.sprs[SPR_DTLBMR_BASE (minway) + set] &= ~SPR_DTLBMR_VPN;
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cpu_state.sprs[SPR_DTLBMR_BASE (minway) + set] |= vpn << 12;
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for (i = 0; i < dmmu->nways; i++)
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{
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uorreg_t lru = cpu_state.sprs[SPR_DTLBMR_BASE (i) + set];
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if (lru & SPR_DTLBMR_LRU)
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{
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lru = (lru & ~SPR_DTLBMR_LRU) | ((lru & SPR_DTLBMR_LRU) - 0x40);
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cpu_state.sprs[SPR_DTLBMR_BASE (i) + set] = lru;
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}
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}
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cpu_state.sprs[SPR_DTLBMR_BASE (way) + set] &= ~SPR_DTLBMR_LRU;
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cpu_state.sprs[SPR_DTLBMR_BASE (way) + set] |= (dmmu->nsets - 1) << 6;
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/* 1 to 1 mapping */
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cpu_state.sprs[SPR_DTLBTR_BASE (minway) + set] &= ~SPR_DTLBTR_PPN;
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cpu_state.sprs[SPR_DTLBTR_BASE (minway) + set] |= vpn << 12;
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cpu_state.sprs[SPR_DTLBMR_BASE (minway) + set] |= SPR_DTLBMR_V;
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#endif
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runtime.sim.mem_cycles += dmmu->missdelay;
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runtime.sim.mem_cycles += dmmu->missdelay;
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/* if tlb refill implemented in HW */
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/* if tlb refill implemented in HW */
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/* return ((cpu_state.sprs[SPR_DTLBTR_BASE(minway) + set] & SPR_DTLBTR_PPN) >> 12) * dmmu->pagesize + (virtaddr % dmmu->pagesize); */
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/* return ((cpu_state.sprs[SPR_DTLBTR_BASE(minway) + set] & SPR_DTLBTR_PPN) >> 12) * dmmu->pagesize + (virtaddr % dmmu->pagesize); */
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except_handle (EXCEPT_DTLBMISS, virtaddr);
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except_handle (EXCEPT_DTLBMISS, virtaddr);
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if (config.pcu.enabled)
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pcu_count_event(SPR_PCMR_DTLBM);
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return 0;
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return 0;
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}
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}
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/* DESC: try to find EA -> PA transaltion without changing
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/* DESC: try to find EA -> PA transaltion without changing
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* any of precessor states. if this is not passible gives up
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* any of precessor states. if this is not passible gives up
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