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moved invalidate_tlb() to helper.c as a work around for gcc 3.2.2 bug - suppressed invalid tb_invalidate_page_range() calls 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2287 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2007-01-03 15:18:08 +00:00
parent df628ff14e
commit 2ee4aed86f
3 changed files with 45 additions and 45 deletions
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1
target-mips/exec.h
View File

@ -149,6 +149,7 @@ void dump_sc (void);
int cpu_mips_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
int is_user, int is_softmmu);
void do_interrupt (CPUState *env);
void invalidate_tlb (CPUState *env, int idx, int use_extra);
void cpu_loop_exit(void);
void do_raise_exception_err (uint32_t exception, int error_code);

41
target-mips/helper.c
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@ -416,3 +416,44 @@ void do_interrupt (CPUState *env)
env->exception_index = EXCP_NONE;
}
#endif /* !defined(CONFIG_USER_ONLY) */
void invalidate_tlb (CPUState *env, int idx, int use_extra)
{
tlb_t *tlb;
target_ulong addr;
uint8_t ASID;
ASID = env->CP0_EntryHi & 0xFF;
tlb = &env->tlb[idx];
/* The qemu TLB is flushed then the ASID changes, so no need to
flush these entries again. */
if (tlb->G == 0 && tlb->ASID != ASID) {
return;
}
if (use_extra && env->tlb_in_use < MIPS_TLB_MAX) {
/* For tlbwr, we can shadow the discarded entry into
a new (fake) TLB entry, as long as the guest can not
tell that it's there. */
env->tlb[env->tlb_in_use] = *tlb;
env->tlb_in_use++;
return;
}
if (tlb->V0) {
addr = tlb->VPN;
while (addr < tlb->end) {
tlb_flush_page (env, addr);
addr += TARGET_PAGE_SIZE;
}
}
if (tlb->V1) {
addr = tlb->end;
while (addr < tlb->end2) {
tlb_flush_page (env, addr);
addr += TARGET_PAGE_SIZE;
}
}
}

48
target-mips/op_helper.c
View File

@ -376,53 +376,11 @@ void cpu_mips_tlb_flush (CPUState *env, int flush_global)
env->tlb_in_use = MIPS_TLB_NB;
}
static void invalidate_tlb (int idx, int use_extra)
{
tlb_t *tlb;
target_ulong addr;
uint8_t ASID;
ASID = env->CP0_EntryHi & 0xFF;
tlb = &env->tlb[idx];
/* The qemu TLB is flushed then the ASID changes, so no need to
flush these entries again. */
if (tlb->G == 0 && tlb->ASID != ASID) {
return;
}
if (use_extra && env->tlb_in_use < MIPS_TLB_MAX) {
/* For tlbwr, we can shadow the discarded entry into
a new (fake) TLB entry, as long as the guest can not
tell that it's there. */
env->tlb[env->tlb_in_use] = *tlb;
env->tlb_in_use++;
return;
}
if (tlb->V0) {
tb_invalidate_page_range(tlb->PFN[0], tlb->end - tlb->VPN);
addr = tlb->VPN;
while (addr < tlb->end) {
tlb_flush_page (env, addr);
addr += TARGET_PAGE_SIZE;
}
}
if (tlb->V1) {
tb_invalidate_page_range(tlb->PFN[1], tlb->end2 - tlb->end);
addr = tlb->end;
while (addr < tlb->end2) {
tlb_flush_page (env, addr);
addr += TARGET_PAGE_SIZE;
}
}
}
static void mips_tlb_flush_extra (CPUState *env, int first)
{
/* Discard entries from env->tlb[first] onwards. */
while (env->tlb_in_use > first) {
invalidate_tlb(--env->tlb_in_use, 0);
invalidate_tlb(env, --env->tlb_in_use, 0);
}
}
@ -459,7 +417,7 @@ void do_tlbwi (void)
/* Wildly undefined effects for CP0_index containing a too high value and
MIPS_TLB_NB not being a power of two. But so does real silicon. */
invalidate_tlb(env->CP0_index & (MIPS_TLB_NB - 1), 0);
invalidate_tlb(env, env->CP0_index & (MIPS_TLB_NB - 1), 0);
fill_tlb(env->CP0_index & (MIPS_TLB_NB - 1));
}
@ -467,7 +425,7 @@ void do_tlbwr (void)
{
int r = cpu_mips_get_random(env);
invalidate_tlb(r, 1);
invalidate_tlb(env, r, 1);
fill_tlb(r);
}