| """ | |
| Test that we can get the vm range of the shared cache. | |
| """ | |
| import lldb | |
| import re | |
| import json | |
| from lldbsuite.test.decorators import * | |
| from lldbsuite.test.lldbtest import * | |
| from lldbsuite.test import lldbutil | |
| class SharedCacheVMRangeTestCase(TestBase): | |
| NO_DEBUG_INFO_TESTCASE = True | |
| @skipIfRemote | |
| @requireDarwin | |
| @skipIfOutOfTreeDebugserver # debugserver returns shared_cache_size | |
| def test_shared_cache_vm_range(self): | |
| """Test that the shared cache VM range contains a known libc function""" | |
| self.build() | |
| target, process, thread, bkpt = lldbutil.run_to_source_breakpoint( | |
| self, "// break here", lldb.SBFileSpec("main.c") | |
| ) | |
| res = lldb.SBCommandReturnObject() | |
| ci = self.dbg.GetCommandInterpreter() | |
| self.assertTrue(ci, VALID_COMMAND_INTERPRETER) | |
| ci.HandleCommand("process plugin packet send jGetSharedCacheInfo:{}", res) | |
| # packet: jGetSharedCacheInfo:{} | |
| # response: | |
| # { | |
| # "shared_cache_base_address": 6572900352, | |
| # "shared_cache_uuid": "674DB25A-34B2-3C56-8BD4-7D78005B2F2E", | |
| # "no_shared_cache": false, | |
| # "shared_cache_private_cache": false, | |
| # "shared_cache_path": "/System/Volumes/Preboot/Cryptexes/OS/System/Library/dyld/dyld_shared_cache_arm64e", | |
| # "shared_cache_size": 5820792832 | |
| # } | |
| self.assertTrue("response: " in res.GetOutput()) | |
| response = re.search("response: (.+)", res.GetOutput()).group(1) | |
| json_response = json.loads(response) | |
| self.assertTrue("shared_cache_base_address" in json_response) | |
| self.assertTrue("shared_cache_size" in json_response) | |
| start = json_response["shared_cache_base_address"] | |
| end = start + json_response["shared_cache_size"] | |
| symctx_list = target.FindSymbols("printf", lldb.eSymbolTypeCode) | |
| self.assertGreater(symctx_list.GetSize(), 0) | |
| symctx = symctx_list.GetContextAtIndex(0) | |
| sym = symctx.GetSymbol() | |
| self.assertTrue(sym.IsValid()) | |
| addr = sym.GetStartAddress() | |
| printf_load_addr = addr.GetLoadAddress(target) | |
| self.assertGreater(printf_load_addr, start) | |
| self.assertLess(printf_load_addr, end) |