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Fix PageMask handling, second part.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2345 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths
2007-01-22 20:50:42 +00:00
parent c281868e26
commit 3b1c8be4f4
3 changed files with 36 additions and 16 deletions
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47
target-mips/helper.c
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@@ -41,23 +41,26 @@ enum {
static int map_address (CPUState *env, target_ulong *physical, int *prot,
target_ulong address, int rw, int access_type)
{
target_ulong tag = address & (TARGET_PAGE_MASK << 1);
uint8_t ASID = env->CP0_EntryHi & 0xFF;
tlb_t *tlb;
int i, n;
int i;
for (i = 0; i < env->tlb_in_use; i++) {
tlb = &env->tlb[i];
tlb_t *tlb = &env->tlb[i];
/* 1k pages are not supported. */
uint8_t ASID = env->CP0_EntryHi & 0xFF;
target_ulong mask = tlb->PageMask | 0x1FFF;
target_ulong tag = address & ~mask;
int n;
/* Check ASID, virtual page number & size */
if ((tlb->G == 1 || tlb->ASID == ASID) &&
tlb->VPN == tag) {
/* TLB match */
n = (address >> TARGET_PAGE_BITS) & 1;
n = !!(address & mask & ~(mask >> 1));
/* Check access rights */
if (!(n ? tlb->V1 : tlb->V0))
return TLBRET_INVALID;
if (rw == 0 || (n ? tlb->D1 : tlb->D0)) {
*physical = tlb->PFN[n] | (address & ~TARGET_PAGE_MASK);
*physical = tlb->PFN[n] | (address & (mask >> 1));
*prot = PAGE_READ;
if (n ? tlb->D1 : tlb->D0)
*prot |= PAGE_WRITE;
@@ -420,9 +423,10 @@ void do_interrupt (CPUState *env)
void invalidate_tlb (CPUState *env, int idx, int use_extra)
{
tlb_t *tlb;
uint8_t ASID;
ASID = env->CP0_EntryHi & 0xFF;
target_ulong addr;
target_ulong end;
uint8_t ASID = env->CP0_EntryHi & 0xFF;
target_ulong mask;
tlb = &env->tlb[idx];
/* The qemu TLB is flushed then the ASID changes, so no need to
@@ -440,8 +444,23 @@ void invalidate_tlb (CPUState *env, int idx, int use_extra)
return;
}
if (tlb->V0)
tlb_flush_page (env, tlb->VPN);
if (tlb->V1)
tlb_flush_page (env, tlb->VPN + TARGET_PAGE_SIZE);
/* 1k pages are not supported. */
mask = tlb->PageMask | 0x1FFF;
if (tlb->V0) {
addr = tlb->VPN;
end = addr | (mask >> 1);
while (addr < end) {
tlb_flush_page (env, addr);
addr += TARGET_PAGE_SIZE;
}
}
if (tlb->V1) {
addr = tlb->VPN | ((mask >> 1) + 1);
addr = tlb->VPN + TARGET_PAGE_SIZE;
end = addr | mask;
while (addr < end) {
tlb_flush_page (env, addr);
addr += TARGET_PAGE_SIZE;
}
}
}