[lldb] Add utility to create Mach-O corefile from YAML desc (#153911)

lldb/packages/Python/lldbsuite/test/configuration.py

@@ -67,6 +67,9 @@
 # Path to the yaml2obj tool. Not optional.
 yaml2obj = None
 
+# Path to the yaml2macho-core tool. Not optional.
+yaml2macho_core = None
+
 # The arch might dictate some specific CFLAGS to be passed to the toolchain to build
 # the inferior programs.  The global variable cflags_extras provides a hook to do
 # just that.
@@ -178,3 +181,11 @@ def get_yaml2obj_path():
     """
     if yaml2obj and os.path.lexists(yaml2obj):
         return yaml2obj
+
+
+def get_yaml2macho_core_path():
+    """
+    Get the path to the yaml2macho-core tool.
+    """
+    if yaml2macho_core and os.path.lexists(yaml2macho_core):
+        return yaml2macho_core

lldb/packages/Python/lldbsuite/test/dotest.py

@@ -279,6 +279,9 @@ def parseOptionsAndInitTestdirs():
         configuration.llvm_tools_dir = args.llvm_tools_dir
         configuration.filecheck = shutil.which("FileCheck", path=args.llvm_tools_dir)
         configuration.yaml2obj = shutil.which("yaml2obj", path=args.llvm_tools_dir)
+        configuration.yaml2macho_core = shutil.which(
+            "yaml2macho-core", path=args.llvm_tools_dir
+        )
 
     if not configuration.get_filecheck_path():
         logging.warning("No valid FileCheck executable; some tests may fail...")

lldb/packages/Python/lldbsuite/test/lldbtest.py

@@ -1715,6 +1715,29 @@ def yaml2obj(self, yaml_path, obj_path, max_size=None):
             command += ["--max-size=%d" % max_size]
         self.runBuildCommand(command)
 
+    def yaml2macho_core(self, yaml_path, obj_path, uuids=None):
+        """
+        Create a Mach-O corefile at the given path from a yaml file.
+
+        Throws subprocess.CalledProcessError if the object could not be created.
+        """
+        yaml2macho_core_bin = configuration.get_yaml2macho_core_path()
+        if not yaml2macho_core_bin:
+            self.assertTrue(False, "No valid yaml2macho-core executable specified")
+        if uuids != None:
+            command = [
+                yaml2macho_core_bin,
+                "-i",
+                yaml_path,
+                "-o",
+                obj_path,
+                "-u",
+                uuids,
+            ]
+        else:
+            command = [yaml2macho_core_bin, "-i", yaml_path, "-o", obj_path]
+        self.runBuildCommand(command)
+
     def cleanup(self, dictionary=None):
         """Platform specific way to do cleanup after build."""
         module = builder_module()
@@ -2278,7 +2301,9 @@ def completions_match(self, command, completions, max_completions=-1):
         given list of completions"""
         interp = self.dbg.GetCommandInterpreter()
         match_strings = lldb.SBStringList()
-        interp.HandleCompletion(command, len(command), 0, max_completions, match_strings)
+        interp.HandleCompletion(
+            command, len(command), 0, max_completions, match_strings
+        )
         # match_strings is a 1-indexed list, so we have to slice...
         self.assertCountEqual(
             completions, list(match_strings)[1:], "List of returned completion is wrong"

lldb/test/API/macosx/arm-corefile-regctx/TestArmMachoCorefileRegctx.py

@@ -13,20 +13,14 @@
 class TestArmMachoCorefileRegctx(TestBase):
     NO_DEBUG_INFO_TESTCASE = True
 
-    @skipUnlessDarwin
-    def setUp(self):
-        TestBase.setUp(self)
-        self.build()
-        self.create_corefile = self.getBuildArtifact("a.out")
-        self.corefile = self.getBuildArtifact("core")
-
     def test_armv7_corefile(self):
         ### Create corefile
-        retcode = call(self.create_corefile + " armv7 " + self.corefile, shell=True)
+        corefile = self.getBuildArtifact("core")
+        self.yaml2macho_core("armv7m.yaml", corefile)
 
         target = self.dbg.CreateTarget("")
         err = lldb.SBError()
-        process = target.LoadCore(self.corefile)
+        process = target.LoadCore(corefile)
         self.assertTrue(process.IsValid())
         thread = process.GetSelectedThread()
         frame = thread.GetSelectedFrame()
@@ -50,11 +44,12 @@ def test_armv7_corefile(self):
 
     def test_arm64_corefile(self):
         ### Create corefile
-        retcode = call(self.create_corefile + " arm64 " + self.corefile, shell=True)
+        corefile = self.getBuildArtifact("core")
+        self.yaml2macho_core("arm64.yaml", corefile)
 
         target = self.dbg.CreateTarget("")
         err = lldb.SBError()
-        process = target.LoadCore(self.corefile)
+        process = target.LoadCore(corefile)
         self.assertTrue(process.IsValid())
         thread = process.GetSelectedThread()
         frame = thread.GetSelectedFrame()

lldb/test/API/macosx/arm-corefile-regctx/arm64.yaml

@@ -0,0 +1,30 @@
+cpu: arm64
+threads:
+  # (lldb) reg read
+  # % pbpaste | grep = | sed 's, ,,g' | awk -F= '{print "{name: " $1 ", value: " $2 "},"}'
+  - regsets:
+      - flavor: gpr
+        registers: [
+           {name: x0, value: 0x0000000000000001}, {name: x1, value: 0x000000016fdff3c0},
+           {name: x2, value: 0x000000016fdff3d0}, {name: x3, value: 0x000000016fdff510},
+           {name: x4, value: 0x0000000000000000}, {name: x5, value: 0x0000000000000000},
+           {name: x6, value: 0x0000000000000000}, {name: x7, value: 0x0000000000000000},
+           {name: x8, value: 0x000000010000d910}, {name: x9, value: 0x0000000000000001},
+           {name: x10, value: 0xe1e88de000000000}, {name: x11, value: 0x0000000000000003},
+           {name: x12, value: 0x0000000000000148}, {name: x13, value: 0x0000000000004000},
+           {name: x14, value: 0x0000000000000008}, {name: x15, value: 0x0000000000000000},
+           {name: x16, value: 0x0000000000000000}, {name: x17, value: 0x0000000100003f5c},
+           {name: x18, value: 0x0000000000000000}, {name: x19, value: 0x0000000100003f5c},
+           {name: x20, value: 0x000000010000c000}, {name: x21, value: 0x000000010000d910},
+           {name: x22, value: 0x000000016fdff250}, {name: x23, value: 0x000000018ce12366},
+           {name: x24, value: 0x000000016fdff1d0}, {name: x25, value: 0x0000000000000001},
+           {name: x26, value: 0x0000000000000000}, {name: x27, value: 0x0000000000000000},
+           {name: x28, value: 0x0000000000000000}, {name: fp, value: 0x000000016fdff3a0},
+           {name: lr, value: 0x000000018cd97f28}, {name: sp, value: 0x000000016fdff140},
+           {name: pc, value: 0x0000000100003f5c}, {name: cpsr, value: 0x80001000}
+        ]
+      - flavor: exc
+        registers: [ {name: far, value: 0x0000000100003f5c}, 
+                     {name: esr, value: 0xf2000000}, 
+                     {name: exception, value: 0x00000000}
+                   ]

lldb/test/API/macosx/arm-corefile-regctx/armv7m.yaml

@@ -0,0 +1,36 @@
+cpu: armv7m
+threads:
+  # (lldb) reg read
+  # % pbpaste | grep = | sed 's, ,,g' | awk -F= '{print "{name: " $1 ", value: " $2 "},"}'
+  - regsets:
+      - flavor: gpr
+        registers: [
+          {name: r0, value: 0x00010000}, {name: r1, value: 0x00020000},
+          {name: r2, value: 0x00030000}, {name: r3, value: 0x00040000},
+          {name: r4, value: 0x00050000}, {name: r5, value: 0x00060000},
+          {name: r6, value: 0x00070000}, {name: r7, value: 0x00080000},
+          {name: r8, value: 0x00090000}, {name: r9, value: 0x000a0000},
+          {name: r10, value: 0x000b0000}, {name: r11, value: 0x000c0000},
+          {name: r12, value: 0x000d0000}, {name: sp, value: 0x000e0000},
+          {name: lr, value: 0x000f0000}, {name: pc, value: 0x00100000},
+          {name: cpsr, value: 0x00110000}
+        ]
+      - flavor: exc
+        registers: [ {name: far, value: 0x00003f5c},
+                     {name: esr, value: 0xf2000000},
+                     {name: exception, value: 0x00000000}
+                   ]
+
+memory-regions:
+  # $sp is 0x000e0000, have bytes surrounding that address
+  - addr: 0x000dffe0
+    UInt8: [
+            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
+            0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11,
+            0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a,
+            0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23,
+            0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c,
+            0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
+            0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 
+            0x3f
+           ]