[PATCH 1/3] score: Add RTEMS_DEFINE_GLOBAL_SYMBOL_IN_SECTION()

[Sebastian Huber]

Update #3799.
---
 cpukit/include/rtems/score/basedefs.h | 19 +++++++++++++++++++
 testsuites/sptests/spmisc01/init.c    |  7 +++++++
 2 files changed, 26 insertions(+)

diff --git a/cpukit/include/rtems/score/basedefs.h b/cpukit/include/rtems/score/basedefs.h
index 782958920c..5f38559b6d 100644
--- a/cpukit/include/rtems/score/basedefs.h
+++ b/cpukit/include/rtems/score/basedefs.h
@@ -343,6 +343,25 @@
   #define RTEMS_DEFINE_GLOBAL_SYMBOL( _name, _value )
 #endif
 
+/**
+ * @brief Defines a global symbol with the specified name in the specified
+ * section.
+ *
+ * The name must be a valid designator.
+ */
+#if defined(__GNUC__)
+  #define RTEMS_DEFINE_GLOBAL_SYMBOL_IN_SECTION( _name, _section ) \
+    __asm__( \
+      ".pushsection \"" _section "\"\n" \
+      "\t.globl " \
+      RTEMS_XSTRING( RTEMS_XCONCAT( __USER_LABEL_PREFIX__, _name ) ) "\n" \
+      RTEMS_XSTRING( RTEMS_XCONCAT( __USER_LABEL_PREFIX__, _name ) ) ":\n" \
+      "\t.popsection\n" \
+    )
+#else
+  #define RTEMS_DEFINE_GLOBAL_SYMBOL_IN_SECTION( _name, section )
+#endif
+
 /**
  * @brief Returns the value of the specified integral expression and tells the
  * compiler that the predicted value is true (1).
diff --git a/testsuites/sptests/spmisc01/init.c b/testsuites/sptests/spmisc01/init.c
index 9090069973..8d713c4219 100644
--- a/testsuites/sptests/spmisc01/init.c
+++ b/testsuites/sptests/spmisc01/init.c
@@ -99,6 +99,10 @@ RTEMS_DECLARE_GLOBAL_SYMBOL(a_global_symbol);
 
 RTEMS_DEFINE_GLOBAL_SYMBOL(a_global_symbol, 0xabc);
 
+RTEMS_DECLARE_GLOBAL_SYMBOL(a_second_symbol);
+
+RTEMS_DEFINE_GLOBAL_SYMBOL_IN_SECTION(a_second_symbol, ".rtemsroset.dummy");
+
 RTEMS_STATIC_ASSERT(0 != 1, zero_neq_one);
 
 static int array[3];
@@ -211,6 +215,9 @@ static void Init(rtems_task_argument arg)
   rtems_test_assert(printflike_func("%i", 0) == 56);
   rtems_test_assert(obfuscate_variable(63) == 63);
   rtems_test_assert((uintptr_t)a_global_symbol == 0xabc);
+  p = a_second_symbol;
+  RTEMS_OBFUSCATE_VARIABLE(p);
+  rtems_test_assert((uintptr_t)p != 0);
   rtems_test_assert(RTEMS_ARRAY_SIZE(array) == 3);
   rtems_test_assert(sizeof(zero_length_array_struct) == 4);
   container_of();
-- 
2.16.4