It's unused, but I need it for debuging.
Seems usefull for completeness.
Reviewed By: thurston
Differential Revision: https://reviews.llvm.org/D156180
// unaccessible memory.
bool MprotectNoAccess(uptr addr, uptr size);
bool MprotectReadOnly(uptr addr, uptr size);
+bool MprotectReadWrite(uptr addr, uptr size);
void MprotectMallocZones(void *addr, int prot);
ZX_OK;
}
+bool MprotectReadWrite(uptr addr, uptr size) {
+ return _zx_vmar_protect(_zx_vmar_root_self(),
+ ZX_VM_PERM_READ | ZX_VM_PERM_WRITE, addr,
+ size) == ZX_OK;
+}
+
void *MmapAlignedOrDieOnFatalError(uptr size, uptr alignment,
const char *mem_type) {
CHECK_GE(size, GetPageSize());
return 0 == internal_mprotect((void *)addr, size, PROT_READ);
}
+bool MprotectReadWrite(uptr addr, uptr size) {
+ return 0 == internal_mprotect((void *)addr, size, PROT_READ | PROT_WRITE);
+}
+
#if !SANITIZER_APPLE
void MprotectMallocZones(void *addr, int prot) {}
#endif
return VirtualProtect((LPVOID)addr, size, PAGE_READONLY, &old_protection);
}
+bool MprotectReadWrite(uptr addr, uptr size) {
+ DWORD old_protection;
+ return VirtualProtect((LPVOID)addr, size, PAGE_READWRITE, &old_protection);
+}
+
void ReleaseMemoryPagesToOS(uptr beg, uptr end) {
uptr beg_aligned = RoundDownTo(beg, GetPageSizeCached()),
end_aligned = RoundDownTo(end, GetPageSizeCached());