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Cleaner implementation for uc_mem_prot on mmio regions

This commit is contained in:
lazymio 2022-05-28 23:46:06 +02:00
parent 2a6529348c
commit 289034538d
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GPG Key ID: DFF27E34A47CB873
3 changed files with 4 additions and 22 deletions
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7
qemu/accel/tcg/cputlb.c
View File

@ -1657,13 +1657,6 @@ load_helper(CPUArchState *env, target_ulong addr, TCGMemOpIdx oi,
res = load_memop(haddr, op);
_out:
// mmio error check
if (uc->invalid_error != UC_ERR_OK) {
uc->invalid_addr = addr;
cpu_exit(uc->cpu);
return 0;
}
// Unicorn: callback on successful data read
if (!code_read) {
if (!uc->size_recur_mem) { // disabling read callback if in recursive call

5
qemu/softmmu/memory.c
View File

@ -82,13 +82,12 @@ MemoryRegion *memory_map_ptr(struct uc_struct *uc, hwaddr begin, size_t size, ui
static uint64_t mmio_read_wrapper(struct uc_struct *uc, void *opaque, hwaddr addr, unsigned size)
{
mmio_cbs* cbs = (mmio_cbs*)opaque;
// We have to care about 32bit target.
addr = addr & ( (target_ulong)(-1) );
if (cbs->read) {
return cbs->read(uc, addr, size, cbs->user_data_read);
} else {
uc->invalid_error = UC_ERR_READ_PROT;
return 0;
}
}
@ -101,8 +100,6 @@ static void mmio_write_wrapper(struct uc_struct *uc, void *opaque, hwaddr addr,
addr = addr & ( (target_ulong)(-1) );
if (cbs->write) {
cbs->write(uc, addr, size, data, cbs->user_data_write);
} else {
uc->invalid_error = UC_ERR_WRITE_PROT;
}
}

14
uc.c
View File

@ -1366,7 +1366,7 @@ uc_err uc_mem_protect(struct uc_struct *uc, uint64_t address, size_t size,
uint64_t addr = address;
uint64_t pc;
size_t count, len;
mmio_cbs* new_cb;
mmio_cbs *mmio;
bool remove_exec = false;
UC_INIT(uc);
@ -1422,20 +1422,12 @@ uc_err uc_mem_protect(struct uc_struct *uc, uint64_t address, size_t size,
uc->readonly_mem(mr, (perms & UC_PROT_WRITE) == 0);
} else {
if(!split_mmio_region(uc, mr, addr, len, false)) {
if (!split_mmio_region(uc, mr, addr, len, false)) {
return UC_ERR_NOMEM;
}
mr = memory_mapping(uc, addr);
new_cb = (mmio_cbs*)mr->opaque;
if (!(perms & UC_PROT_READ)) {
new_cb->read = NULL;
}
if (!(perms & UC_PROT_WRITE)) {
new_cb->write = NULL;
}
mr->perms = perms;
}
count += len;