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target/hppa: Split out hppa_flush_tlb_range

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Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-11-01 16:07:48 -07:00
parent f8cda28b8d
commit 09cae8255f
1 changed files with 24 additions and 15 deletions
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39
target/hppa/mem_helper.c
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@ -67,6 +67,25 @@ static void hppa_flush_tlb_ent(CPUHPPAState *env, HPPATLBEntry *ent,
ent->itree.start = -1;
}
static HPPATLBEntry *hppa_flush_tlb_range(CPUHPPAState *env,
vaddr va_b, vaddr va_e)
{
HPPATLBEntry *empty = NULL;
/* Zap any old entries covering ADDR; notice empty entries on the way. */
for (int i = HPPA_BTLB_ENTRIES; i < ARRAY_SIZE(env->tlb); ++i) {
HPPATLBEntry *ent = &env->tlb[i];
if (!ent->entry_valid) {
empty = ent;
} else if (va_e >= ent->itree.start && va_b <= ent->itree.last) {
hppa_flush_tlb_ent(env, ent, false);
empty = ent;
}
}
return empty;
}
static HPPATLBEntry *hppa_alloc_tlb_ent(CPUHPPAState *env)
{
HPPATLBEntry *ent;
@ -284,21 +303,11 @@ bool hppa_cpu_tlb_fill(CPUState *cs, vaddr addr, int size,
/* Insert (Insn/Data) TLB Address. Note this is PA 1.1 only. */
void HELPER(itlba)(CPUHPPAState *env, target_ulong addr, target_ureg reg)
{
HPPATLBEntry *empty = NULL;
int i;
HPPATLBEntry *empty;
/* Zap any old entries covering ADDR; notice empty entries on the way. */
for (i = HPPA_BTLB_ENTRIES; i < ARRAY_SIZE(env->tlb); ++i) {
HPPATLBEntry *ent = &env->tlb[i];
if (ent->itree.start <= addr && addr <= ent->itree.last) {
if (ent->entry_valid) {
hppa_flush_tlb_ent(env, ent, false);
}
if (!empty) {
empty = ent;
}
}
}
addr &= TARGET_PAGE_MASK;
empty = hppa_flush_tlb_range(env, addr, addr + TARGET_PAGE_SIZE - 1);
/* If we didn't see an empty entry, evict one. */
if (empty == NULL) {
@ -306,8 +315,8 @@ void HELPER(itlba)(CPUHPPAState *env, target_ulong addr, target_ureg reg)
}
/* Note that empty->entry_valid == 0 already. */
empty->itree.start = addr & TARGET_PAGE_MASK;
empty->itree.last = empty->itree.start + TARGET_PAGE_SIZE - 1;
empty->itree.start = addr;
empty->itree.last = addr + TARGET_PAGE_SIZE - 1;
empty->pa = extract32(reg, 5, 20) << TARGET_PAGE_BITS;
trace_hppa_tlb_itlba(env, empty, empty->itree.start,
empty->itree.last, empty->pa);