From 452853f0f96be65cde0900265b654c01b35f321d Mon Sep 17 00:00:00 2001
From: Richard Xia <rxia@sifive.com>
Date: Tue, 31 Oct 2017 13:19:21 -0700
Subject: [PATCH] Temporarily comment out MulticoreRegTest due to flakiness.

---
 debug/gdbserver.py | 115 +++++++++++++++++++++++----------------------
 1 file changed, 58 insertions(+), 57 deletions(-)

diff --git a/debug/gdbserver.py b/debug/gdbserver.py
index f81a916..51c6ab6 100755
--- a/debug/gdbserver.py
+++ b/debug/gdbserver.py
@@ -465,63 +465,64 @@ class InterruptTest(GdbSingleHartTest):
         self.gdb.p("interrupt_count")
         self.gdb.p("local")
 
-class MulticoreRegTest(GdbTest):
-    compile_args = ("programs/infinite_loop.S", "-DMULTICORE")
-
-    def early_applicable(self):
-        return len(self.target.harts) > 1
-
-    def setup(self):
-        self.gdb.load()
-        for hart in self.target.harts:
-            self.gdb.select_hart(hart)
-            self.gdb.p("$pc=_start")
-
-    def test(self):
-        # Run to main
-        # Hart 0 is the first to be resumed, so we have to set the breakpoint
-        # there. gdb won't actually set the breakpoint until we tell it to
-        # resume.
-        self.gdb.select_hart(self.target.harts[0])
-        self.gdb.b("main")
-        self.gdb.c_all()
-        for hart in self.target.harts:
-            self.gdb.select_hart(hart)
-            assertIn("main", self.gdb.where())
-        self.gdb.select_hart(self.target.harts[0])
-        self.gdb.command("delete breakpoints")
-
-        # Run through the entire loop.
-        self.gdb.b("main_end")
-        self.gdb.c_all()
-
-        hart_ids = []
-        for hart in self.target.harts:
-            self.gdb.select_hart(hart)
-            assertIn("main_end", self.gdb.where())
-            # Check register values.
-            hart_id = self.gdb.p("$x1")
-            assertNotIn(hart_id, hart_ids)
-            hart_ids.append(hart_id)
-            for n in range(2, 32):
-                value = self.gdb.p("$x%d" % n)
-                assertEqual(value, hart_ids[-1] + n - 1)
-
-        # Confirmed that we read different register values for different harts.
-        # Write a new value to x1, and run through the add sequence again.
-
-        for hart in self.target.harts:
-            self.gdb.select_hart(hart)
-            self.gdb.p("$x1=0x%x" % (hart.index * 0x800))
-            self.gdb.p("$pc=main_post_csrr")
-        self.gdb.c_all()
-        for hart in self.target.harts:
-            self.gdb.select_hart(hart)
-            assertIn("main", self.gdb.where())
-            # Check register values.
-            for n in range(1, 32):
-                value = self.gdb.p("$x%d" % n)
-                assertEqual(value, hart.index * 0x800 + n - 1)
+# Fails nondeterministically.
+#class MulticoreRegTest(GdbTest):
+#    compile_args = ("programs/infinite_loop.S", "-DMULTICORE")
+#
+#    def early_applicable(self):
+#        return len(self.target.harts) > 1
+#
+#    def setup(self):
+#        self.gdb.load()
+#        for hart in self.target.harts:
+#            self.gdb.select_hart(hart)
+#            self.gdb.p("$pc=_start")
+#
+#    def test(self):
+#        # Run to main
+#        # Hart 0 is the first to be resumed, so we have to set the breakpoint
+#        # there. gdb won't actually set the breakpoint until we tell it to
+#        # resume.
+#        self.gdb.select_hart(self.target.harts[0])
+#        self.gdb.b("main")
+#        self.gdb.c_all()
+#        for hart in self.target.harts:
+#            self.gdb.select_hart(hart)
+#            assertIn("main", self.gdb.where())
+#        self.gdb.select_hart(self.target.harts[0])
+#        self.gdb.command("delete breakpoints")
+#
+#        # Run through the entire loop.
+#        self.gdb.b("main_end")
+#        self.gdb.c_all()
+#
+#        hart_ids = []
+#        for hart in self.target.harts:
+#            self.gdb.select_hart(hart)
+#            assertIn("main_end", self.gdb.where())
+#            # Check register values.
+#            hart_id = self.gdb.p("$x1")
+#            assertNotIn(hart_id, hart_ids)
+#            hart_ids.append(hart_id)
+#            for n in range(2, 32):
+#                value = self.gdb.p("$x%d" % n)
+#                assertEqual(value, hart_ids[-1] + n - 1)
+#
+#        # Confirmed that we read different register values for different harts.
+#        # Write a new value to x1, and run through the add sequence again.
+#
+#        for hart in self.target.harts:
+#            self.gdb.select_hart(hart)
+#            self.gdb.p("$x1=0x%x" % (hart.index * 0x800))
+#            self.gdb.p("$pc=main_post_csrr")
+#        self.gdb.c_all()
+#        for hart in self.target.harts:
+#            self.gdb.select_hart(hart)
+#            assertIn("main", self.gdb.where())
+#            # Check register values.
+#            for n in range(1, 32):
+#                value = self.gdb.p("$x%d" % n)
+#                assertEqual(value, hart.index * 0x800 + n - 1)
 
 class MulticoreRunHaltStepiTest(GdbTest):
     compile_args = ("programs/multicore.c", "-DMULTICORE")
-- 
2.30.2