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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2019-10-04 08:51:13 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2019-10-28 10:00:31 +0100 |
| commit | 795b167545ac074509f4b7c5fd7ed1c0da717460 (patch) | |
| tree | 03738f140e6a95276eae514e0ee9a1d7a8426e79 | |
| parent | bsp/xilinx-zynqmp: Fix linkcmds config (diff) | |
| download | rtems-795b167545ac074509f4b7c5fd7ed1c0da717460.tar.bz2 | |
score: Add RTEMS_DEFINE_GLOBAL_SYMBOL_IN_SECTION()
Update #3799.
| -rw-r--r-- | cpukit/include/rtems/score/basedefs.h | 19 | ||||
| -rw-r--r-- | testsuites/sptests/spmisc01/init.c | 7 |
2 files changed, 26 insertions, 0 deletions
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 @@ -344,6 +344,25 @@ #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(); |