Import LLVM 10.0.0 release including clang, lld and lldb.

ok hackroom
tested by plenty

3 files changed, 123 insertions, 0 deletions

diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/unwind/sigtramp/Makefile b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/unwind/sigtramp/Makefile
new file mode 100644
index 00000000000..10495940055
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/unwind/sigtramp/Makefile
@@ -0,0 +1,3 @@
+C_SOURCES := main.c
+
+include Makefile.rules
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/unwind/sigtramp/TestSigtrampUnwind.py b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/unwind/sigtramp/TestSigtrampUnwind.py
new file mode 100644
index 00000000000..bf19cacac06
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/unwind/sigtramp/TestSigtrampUnwind.py
@@ -0,0 +1,93 @@
+"""
+Test that we can backtrace correctly with 'sigtramp' functions on the stack
+"""
+
+from __future__ import print_function
+
+
+import lldb
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+
+class SigtrampUnwind(TestBase):
+    mydir = TestBase.compute_mydir(__file__)
+
+    # On different platforms the "_sigtramp" and "__kill" frames are likely to be different.
+    # This test could probably be adapted to run on linux/*bsd easily enough.
+    @skipUnlessDarwin
+    @expectedFailureAll(oslist=["ios", "watchos", "tvos", "bridgeos"], bugnumber="<rdar://problem/34006863>")  # lldb skips 1 frame on arm64 above _sigtramp
+    def test(self):
+        """Test that we can backtrace correctly with _sigtramp on the stack"""
+        self.build()
+        self.setTearDownCleanup()
+
+        exe = self.getBuildArtifact("a.out")
+        target = self.dbg.CreateTarget(exe)
+        self.assertTrue(target, VALID_TARGET)
+
+        lldbutil.run_break_set_by_file_and_line(self, "main.c", line_number(
+            'main.c', '// Set breakpoint here'), num_expected_locations=1)
+
+        process = target.LaunchSimple(
+            None, None, self.get_process_working_directory())
+
+        if not process:
+            self.fail("SBTarget.Launch() failed")
+
+        if process.GetState() != lldb.eStateStopped:
+            self.fail("Process should be in the 'stopped' state, "
+                      "instead the actual state is: '%s'" %
+                      lldbutil.state_type_to_str(process.GetState()))
+
+        self.expect(
+            "pro handle  -n false -p true -s false SIGUSR1",
+            "Have lldb pass SIGUSR1 signals",
+            substrs=[
+                "SIGUSR1",
+                "true",
+                "false",
+                "false"])
+
+        lldbutil.run_break_set_by_symbol(
+            self,
+            "handler",
+            num_expected_locations=1,
+            module_name="a.out")
+
+        self.runCmd("continue")
+
+        thread = process.GetThreadAtIndex(0)
+
+        found_handler = False
+        found_sigtramp = False
+        found_kill = False
+        found_main = False
+
+        for f in thread.frames:
+            if f.GetFunctionName() == "handler":
+                found_handler = True
+            if f.GetFunctionName() == "_sigtramp":
+                found_sigtramp = True
+            if f.GetFunctionName() == "__kill":
+                found_kill = True
+            if f.GetFunctionName() == "main":
+                found_main = True
+
+        if self.TraceOn():
+            print("Backtrace once we're stopped:")
+            for f in thread.frames:
+                print("  %d %s" % (f.GetFrameID(), f.GetFunctionName()))
+
+        if not found_handler:
+            self.fail("Unable to find handler() in backtrace.")
+
+        if not found_sigtramp:
+            self.fail("Unable to find _sigtramp() in backtrace.")
+
+        if not found_kill:
+            self.fail("Unable to find kill() in backtrace.")
+
+        if not found_main:
+            self.fail("Unable to find main() in backtrace.")
diff --git a/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/unwind/sigtramp/main.c b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/unwind/sigtramp/main.c
new file mode 100644
index 00000000000..aaa03e7aa84
--- /dev/null
+++ b/gnu/llvm/lldb/packages/Python/lldbsuite/test/functionalities/unwind/sigtramp/main.c
@@ -0,0 +1,27 @@
+#include <stdlib.h>
+#include <signal.h>
+#include <stdio.h>
+#include <unistd.h>
+
+void handler (int in)
+{
+    puts ("in handler routine");
+    while (1)
+        ;
+}
+
+void
+foo ()
+{
+    puts ("in foo ()");
+    kill (getpid(), SIGUSR1);
+}
+int main ()
+{
+    puts ("in main");           // Set breakpoint here
+    signal (SIGUSR1, handler);
+    puts ("signal handler set up");
+    foo();
+    puts ("exiting");
+    return 0;
+}