testsuite: Add machine exception signal map test

Add a test to verify that mapping of machine exceptions to POSIX signals
operates properly when the application requests it.

spec/build/testsuites/psxtests/grp.yml

@@ -208,6 +208,8 @@ links:
   uid: psxsignal07
 - role: build-dependency
   uid: psxsignal08
+- role: build-dependency
+  uid: psxsignal09
 - role: build-dependency
   uid: psxspin01
 - role: build-dependency

spec/build/testsuites/psxtests/psxsignal09.yml

@@ -0,0 +1,22 @@
+SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
+build-type: test-program
+cflags: []
+copyrights:
+- Copyright (C) 2021 On-Line Applications Research (OAR)
+cppflags: []
+cxxflags: []
+enabled-by:
+- and:
+  - RTEMS_EXCEPTION_EXTENSIONS
+  - RTEMS_POSIX_API
+features: c cprogram
+includes: []
+ldflags: []
+links: []
+source:
+- testsuites/psxtests/psxsignal09/init.c
+stlib: []
+target: testsuites/psxtests/psxsignal09.exe
+type: build
+use-after: []
+use-before: []