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Cleaner implementation for uc_mem_prot on mmio regions

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lazymio
2022-05-28 23:46:06 +02:00
parent 2a6529348c
commit 289034538d
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); res = load_memop(haddr, op);
_out: _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 // Unicorn: callback on successful data read
if (!code_read) { if (!code_read) {
if (!uc->size_recur_mem) { // disabling read callback if in recursive call if (!uc->size_recur_mem) { // disabling read callback if in recursive call

3
qemu/softmmu/memory.c
View File

@@ -88,7 +88,6 @@ static uint64_t mmio_read_wrapper(struct uc_struct *uc, void *opaque, hwaddr add
if (cbs->read) { if (cbs->read) {
return cbs->read(uc, addr, size, cbs->user_data_read); return cbs->read(uc, addr, size, cbs->user_data_read);
} else { } else {
uc->invalid_error = UC_ERR_READ_PROT;
return 0; return 0;
} }
} }
@@ -101,8 +100,6 @@ static void mmio_write_wrapper(struct uc_struct *uc, void *opaque, hwaddr addr,
addr = addr & ( (target_ulong)(-1) ); addr = addr & ( (target_ulong)(-1) );
if (cbs->write) { if (cbs->write) {
cbs->write(uc, addr, size, data, cbs->user_data_write); cbs->write(uc, addr, size, data, cbs->user_data_write);
} else {
uc->invalid_error = UC_ERR_WRITE_PROT;
} }
} }

12
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 addr = address;
uint64_t pc; uint64_t pc;
size_t count, len; size_t count, len;
mmio_cbs* new_cb; mmio_cbs *mmio;
bool remove_exec = false; bool remove_exec = false;
UC_INIT(uc); UC_INIT(uc);
@@ -1427,15 +1427,7 @@ uc_err uc_mem_protect(struct uc_struct *uc, uint64_t address, size_t size,
} }
mr = memory_mapping(uc, addr); mr = memory_mapping(uc, addr);
new_cb = (mmio_cbs*)mr->opaque; mr->perms = perms;
if (!(perms & UC_PROT_READ)) {
new_cb->read = NULL;
}
if (!(perms & UC_PROT_WRITE)) {
new_cb->write = NULL;
}
} }
count += len; count += len;