X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=debug%2Fgdbserver.py;h=17e1734010d13047c8215eba0a32b25643937b46;hb=HEAD;hp=a56d4a1f8a84216ac63596f0acf5944adccb1bcd;hpb=c0aa8a601202a5de0d3334cb74f75105df627eee;p=riscv-tests.git

diff --git a/debug/gdbserver.py b/debug/gdbserver.py
index a56d4a1..17e1734 100755
--- a/debug/gdbserver.py
+++ b/debug/gdbserver.py
@@ -12,7 +12,8 @@ import targets
 import testlib
 from testlib import assertEqual, assertNotEqual, assertIn, assertNotIn
 from testlib import assertGreater, assertRegexpMatches, assertLess
-from testlib import GdbTest, GdbSingleHartTest, TestFailed, assertTrue
+from testlib import GdbTest, GdbSingleHartTest, TestFailed
+from testlib import assertTrue
 
 MSTATUS_UIE = 0x00000001
 MSTATUS_SIE = 0x00000002
@@ -136,6 +137,37 @@ class SimpleF18Test(SimpleRegisterTest):
     def test(self):
         self.check_reg("f18", "fs2")
 
+class CustomRegisterTest(SimpleRegisterTest):
+    def early_applicable(self):
+        return self.target.implements_custom_test
+
+    def check_custom(self, magic):
+        regs = {k: v for k, v in self.gdb.info_registers("all").iteritems()
+                if k.startswith("custom")}
+        assertEqual(set(regs.keys()),
+                set(("custom1",
+                    "custom12345",
+                    "custom12346",
+                    "custom12347",
+                    "custom12348")))
+        for name, value in regs.iteritems():
+            number = int(name[6:])
+            if number % 2:
+                expect = number + magic
+                assertIn(value, (expect, expect + (1<<32)))
+            else:
+                assertIn("Could not fetch register", value)
+
+    def test(self):
+        self.check_custom(0)
+
+        # Now test writing
+        magic = 6667
+        self.gdb.p("$custom12345=%d" % (12345 + magic))
+        self.gdb.stepi()
+
+        self.check_custom(magic)
+
 class SimpleNoExistTest(GdbTest):
     def test(self):
         try:
@@ -774,7 +806,19 @@ class TriggerStoreAddressInstant(TriggerTest):
         write_loop = self.gdb.p("&write_loop")
         data = self.gdb.p("&data")
         self.gdb.command("watch *0x%x" % data)
-        self.gdb.c()
+        output = self.gdb.c()
+        if "_exit (status=0)" in output:
+            # We ran to _exit. It looks as if we didn't hit the trigger at all.
+            # However this can be "correct" behavior. gdb's definition of
+            # "watch" is to run until the value in memory changes. To do this
+            # it reads the memory value when the trigger is set, and then when
+            # the halt happens. Because our triggers can fire just before the
+            # write happens, when gdb does this check the memory hasn't
+            # changed. So it silently resumes running.
+            # https://github.com/riscv/riscv-openocd/issues/295 tracks this
+            # problem. Until it's fixed, we're going to allow running to _exit.
+            return
+
         # Accept hitting the breakpoint before or after the store instruction.
         assertIn(self.gdb.p("$pc"), [write_loop, write_loop + 4])
         assertEqual(self.gdb.p("$a0"), self.gdb.p("&data"))
@@ -941,9 +985,6 @@ class PrivTest(GdbSingleHartTest):
             self.supported.add(2)
         self.supported.add(3)
 
-class PrivRw(PrivTest):
-    def test(self):
-        """Test reading/writing priv."""
         # Disable physical memory protection by allowing U mode access to all
         # memory.
         try:
@@ -962,6 +1003,9 @@ class PrivRw(PrivTest):
             # SATP only exists if you have S mode.
             pass
 
+class PrivRw(PrivTest):
+    def test(self):
+        """Test reading/writing priv."""
         # Leave the PC at _start, where the first 4 instructions should be
         # legal in any mode.
         for privilege in range(4):