Revision 3b1c8be4 target-mips/helper.c
| b/target-mips/helper.c | ||
|---|---|---|
| 41 | 41 |
static int map_address (CPUState *env, target_ulong *physical, int *prot, |
| 42 | 42 |
target_ulong address, int rw, int access_type) |
| 43 | 43 |
{
|
| 44 |
target_ulong tag = address & (TARGET_PAGE_MASK << 1); |
|
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uint8_t ASID = env->CP0_EntryHi & 0xFF; |
|
| 46 |
tlb_t *tlb; |
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| 47 |
int i, n; |
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int i; |
|
| 48 | 45 |
|
| 49 | 46 |
for (i = 0; i < env->tlb_in_use; i++) {
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tlb = &env->tlb[i]; |
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tlb_t *tlb = &env->tlb[i]; |
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/* 1k pages are not supported. */ |
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uint8_t ASID = env->CP0_EntryHi & 0xFF; |
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target_ulong mask = tlb->PageMask | 0x1FFF; |
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target_ulong tag = address & ~mask; |
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int n; |
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|
|
| 51 | 54 |
/* Check ASID, virtual page number & size */ |
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if ((tlb->G == 1 || tlb->ASID == ASID) && |
| 53 | 56 |
tlb->VPN == tag) {
|
| 54 | 57 |
/* TLB match */ |
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n = (address >> TARGET_PAGE_BITS) & 1;
|
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n = !!(address & mask & ~(mask >> 1));
|
|
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/* Check access rights */ |
| 57 | 60 |
if (!(n ? tlb->V1 : tlb->V0)) |
| 58 | 61 |
return TLBRET_INVALID; |
| 59 | 62 |
if (rw == 0 || (n ? tlb->D1 : tlb->D0)) {
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*physical = tlb->PFN[n] | (address & ~TARGET_PAGE_MASK);
|
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*physical = tlb->PFN[n] | (address & (mask >> 1));
|
|
| 61 | 64 |
*prot = PAGE_READ; |
| 62 | 65 |
if (n ? tlb->D1 : tlb->D0) |
| 63 | 66 |
*prot |= PAGE_WRITE; |
| ... | ... | |
| 420 | 423 |
void invalidate_tlb (CPUState *env, int idx, int use_extra) |
| 421 | 424 |
{
|
| 422 | 425 |
tlb_t *tlb; |
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uint8_t ASID; |
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|
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ASID = env->CP0_EntryHi & 0xFF; |
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target_ulong addr; |
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target_ulong end; |
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uint8_t ASID = env->CP0_EntryHi & 0xFF; |
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target_ulong mask; |
|
| 426 | 430 |
|
| 427 | 431 |
tlb = &env->tlb[idx]; |
| 428 | 432 |
/* The qemu TLB is flushed then the ASID changes, so no need to |
| ... | ... | |
| 440 | 444 |
return; |
| 441 | 445 |
} |
| 442 | 446 |
|
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if (tlb->V0) |
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tlb_flush_page (env, tlb->VPN); |
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if (tlb->V1) |
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tlb_flush_page (env, tlb->VPN + TARGET_PAGE_SIZE); |
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/* 1k pages are not supported. */ |
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mask = tlb->PageMask | 0x1FFF; |
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if (tlb->V0) {
|
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addr = tlb->VPN; |
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end = addr | (mask >> 1); |
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while (addr < end) {
|
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tlb_flush_page (env, addr); |
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addr += TARGET_PAGE_SIZE; |
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} |
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} |
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if (tlb->V1) {
|
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addr = tlb->VPN | ((mask >> 1) + 1); |
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addr = tlb->VPN + TARGET_PAGE_SIZE; |
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end = addr | mask; |
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while (addr < end) {
|
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tlb_flush_page (env, addr); |
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addr += TARGET_PAGE_SIZE; |
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} |
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} |
|
| 447 | 466 |
} |
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