Changeset 4812a8b5 in rtems

Timestamp:

04/06/21 14:02:20 (3 years ago)

Author:

Kinsey Moore <kinsey.moore@…>

Branches:

master

Children:

c5986a5

Parents:

3fc641ab

git-author:

Kinsey Moore <kinsey.moore@…> (04/06/21 14:02:20)

git-committer:

Joel Sherrill <joel@…> (10/29/21 17:40:56)

Message:

cpukit: Add signal mapping support

This adds a confdef option allowing an application to request mapping
machine exceptions to POSIX signals. This is required for some languages
such as Ada.

Files:

• cpukit/doxygen/appl-config.h (modified) (1 diff)
• cpukit/include/rtems/confdefs/extensions.h (modified) (2 diffs)
• cpukit/include/rtems/score/exception.h (added)
• cpukit/score/src/exceptionmapping.c (added)
• spec/build/cpukit/librtemscpu.yml (modified) (2 diffs)
• spec/build/cpukit/objexceptionmapping.yml (added)

cpukit/doxygen/appl-config.h

@@ -1773 +1773 @@
  */
 #define CONFIGURE_ATA_DRIVER_TASK_PRIORITY
+
+/* Generated from spec:/acfg/if/exception-to-signal-mapping */
+
+/**
+ * @brief This configuration option is a boolean feature define.
+ *
+ * In case this configuration option is defined, then the machine exception to
+ * POSIX signal mapping is configured during system initialization.
+ *
+ * @par Default Configuration
+ * If this configuration option is undefined, then the described feature is not
+ * enabled.
+ *
+ * @par Notes
+ * @parblock
+ * This device driver is responsible for setting up a mapping from machine
+ * exceptions to POSIX signals so that applications may consume them and alter
+ * task execution as necessary.
+ *
+ * This is especially useful for applications written in Ada or C++.
+ * @endparblock
+ */
+#define CONFIGURE_EXCEPTION_TO_SIGNAL_MAPPING
 
 /* Generated from spec:/acfg/if/max-drivers */

cpukit/include/rtems/confdefs/extensions.h

@@ -94 +94 @@
 #endif
 
+#ifdef CONFIGURE_EXCEPTION_TO_SIGNAL_MAPPING
+  #include <rtems/score/exception.h>
+#endif
+
 #ifdef __cplusplus
 extern "C" {
@@ -104 +108 @@
   || defined(BSP_INITIAL_EXTENSION)
   const User_extensions_Table _User_extensions_Initial_extensions[] = {
+    #ifdef CONFIGURE_EXCEPTION_TO_SIGNAL_MAPPING
+      { .fatal = _Exception_Raise_signal },
+    #endif
     #ifdef _CONFIGURE_RECORD_NEED_EXTENSION
       {

spec/build/cpukit/librtemscpu.yml

@@ -344 +344 @@
   - cpukit/include/rtems/score/coresemimpl.h
   - cpukit/include/rtems/score/cpustdatomic.h
+  - cpukit/include/rtems/score/exception.h
   - cpukit/include/rtems/score/freechain.h
   - cpukit/include/rtems/score/hash.h
@@ -498 +499 @@
 - role: build-dependency
   uid: objdrvmgr
+- role: build-dependency
+  uid: objexceptionmapping
 - role: build-dependency
   uid: objgnat