Add a simple mechanism to skip tests on targets. (riscv-software-src#251

)

debug/targets.py

@@ -84,6 +84,13 @@ class Target:
     # Supports simultaneous resume through hasel.
     support_hasel = True
 
+    # Tests whose names are mentioned in this list will be skipped and marked
+    # as not applicable. This is a crude mechanism that can be handy, but in
+    # general it's better to define some property like those above that
+    # describe behavior of this target, and tests can use that to decide
+    # whether they are applicable or not.
+    skip_tests = []
+
     # Internal variables:
     directory = None
     temporary_files = []

debug/testlib.py

@@ -980,7 +980,8 @@ def run(self):
 
         sys.stdout.flush()
 
-        if not self.early_applicable():
+        if self.__class__.__name__ in self.target.skip_tests or \
+                not self.early_applicable():
             return "not_applicable"
 
         self.start = time.time()