OpenE2K/qemu-e2k
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e2k: Fix segfault.

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Signed-off-by: Denis Drakhnya <numas13@gmail.com>
This commit is contained in:
Denis Drakhnia 2021-03-24 17:23:32 +02:00 committed by Denis Drakhnia
parent 52e67df3a1
commit 0914c72c8b
2 changed files with 14 additions and 9 deletions
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1
target/e2k/cpu.h
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@ -558,6 +558,7 @@ typedef struct {
uint32_t cdi; /* current data index */
uint32_t ldi; /* loaded data index */
target_ulong last_page;
bool last_page_valid;
} E2KAauAreaState;
typedef struct {

22
target/e2k/helper_aau.c
View File

@ -9,6 +9,7 @@ static inline void init_prefetch_area(E2KAauAreaState *s, E2KAauPrefInstr pi,
uint32_t *inds)
{
s->last_page = 0;
s->last_page_valid = false;
if (pi.fmt != 0) {
s->pi = pi;
s->ldi = 0;
@ -52,19 +53,22 @@ target_ulong HELPER(mova_ptr)(CPUE2KState *env, int chan, int area, int ind,
E2KAauAreaState *as = &ps->area[area];
E2KAauPrefInstr instr = as->pi;
E2KAad aad = env->aau.ds[instr.aad];
target_ulong ptr = aad.base + as->cdi + instr.disp + ind;
target_ulong page = ptr & ~(TARGET_PAGE_SIZE - 1);
target_ulong addr = aad.base + as->cdi + instr.disp + ind;
target_ulong page = addr & TARGET_PAGE_MASK;
if (ptr & (size - 1)) {
ptr = 0;
} else if (as->last_page == 0 || page != as->last_page) {
if (!helper_probe_read_access(env, page, size, mmu_idx)) {
ptr = 0;
}
if (addr & (size - 1)) {
return 0;
} else if (page != as->last_page) {
void *ignore;
int flags;
flags = probe_access_flags(env, page, MMU_DATA_LOAD, mmu_idx,
true, &ignore, 0);
as->last_page = page;
as->last_page_valid = !(flags & TLB_INVALID_MASK);
}
return ptr;
return as->last_page_valid ? addr : 0;
}
void HELPER(aau_am)(CPUE2KState *env, int chan, int area)