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score: Add RTEMS_DEFINE_GLOBAL_SYMBOL_IN_SECTION()

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Update #3799.
This commit is contained in:
Sebastian Huber
2019-10-04 08:51:13 +02:00
parent 37e9aa69e5
commit 795b167545
2 changed files with 26 additions and 0 deletions
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19
cpukit/include/rtems/score/basedefs.h
View File

@@ -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).

7
testsuites/sptests/spmisc01/init.c
View File

@@ -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();