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fixed tlb invalidation

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@555 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2004-01-18 21:52:14 +00:00
parent c4c7e3e610
commit 988578886e
1 changed files with 19 additions and 2 deletions
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21
exec.c
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@ -36,6 +36,7 @@
/* make various TB consistency checks */
//#define DEBUG_TB_CHECK
//#define DEBUG_TLB_CHECK
/* threshold to flush the translated code buffer */
#define CODE_GEN_BUFFER_MAX_SIZE (CODE_GEN_BUFFER_SIZE - CODE_GEN_MAX_SIZE)
@ -766,12 +767,26 @@ void tb_link(TranslationBlock *tb)
/* save the code memory mappings (needed to invalidate the code) */
addr = tb->pc & TARGET_PAGE_MASK;
vp = virt_page_find_alloc(addr >> TARGET_PAGE_BITS);
#ifdef DEBUG_TLB_CHECK
if (vp->valid_tag == virt_valid_tag &&
vp->phys_addr != tb->page_addr[0]) {
printf("Error tb addr=0x%x phys=0x%x vp->phys_addr=0x%x\n",
addr, tb->page_addr[0], vp->phys_addr);
}
#endif
vp->phys_addr = tb->page_addr[0];
vp->valid_tag = virt_valid_tag;
if (tb->page_addr[1] != -1) {
addr += TARGET_PAGE_SIZE;
vp = virt_page_find_alloc(addr >> TARGET_PAGE_BITS);
#ifdef DEBUG_TLB_CHECK
if (vp->valid_tag == virt_valid_tag &&
vp->phys_addr != tb->page_addr[1]) {
printf("Error tb addr=0x%x phys=0x%x vp->phys_addr=0x%x\n",
addr, tb->page_addr[1], vp->phys_addr);
}
#endif
vp->phys_addr = tb->page_addr[1];
vp->valid_tag = virt_valid_tag;
}
@ -1057,6 +1072,7 @@ void tlb_flush_page(CPUState *env, uint32_t addr)
tb = tb->page_next[n];
}
}
vp->valid_tag = 0;
}
#if !defined(CONFIG_SOFTMMU)
@ -1069,7 +1085,8 @@ static inline void tlb_protect_code1(CPUTLBEntry *tlb_entry, uint32_t addr)
{
if (addr == (tlb_entry->address &
(TARGET_PAGE_MASK | TLB_INVALID_MASK)) &&
(tlb_entry->address & ~TARGET_PAGE_MASK) != IO_MEM_CODE) {
(tlb_entry->address & ~TARGET_PAGE_MASK) != IO_MEM_CODE &&
(tlb_entry->address & ~TARGET_PAGE_MASK) != IO_MEM_ROM) {
tlb_entry->address |= IO_MEM_CODE;
tlb_entry->addend -= (unsigned long)phys_ram_base;
}
@ -1139,7 +1156,7 @@ static void tlb_unprotect_code_phys(CPUState *env, uint32_t phys_addr)
tlb_unprotect_code2(&env->tlb_write[1][i], phys_addr);
}
/* add a new TLB entry. At most a single entry for a given virtual
/* add a new TLB entry. At most one entry for a given virtual
address is permitted. */
int tlb_set_page(CPUState *env, uint32_t vaddr, uint32_t paddr, int prot,
int is_user, int is_softmmu)