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score: Fix RTEMS_DEFINE_GLOBAL_SYMBOL()

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The availability of a proper RTEMS_DEFINE_GLOBAL_SYMBOL() implementation
depends on __asm__() and thus __GNUC__.

Clarify documentation.

Update #4953.
This commit is contained in:
Sebastian Huber
2023-09-13 07:45:35 +02:00
parent 2bb23c7e84
commit 0add2d2edc
1 changed files with 3 additions and 2 deletions
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cpukit/include/rtems/score/basedefs.h
+3 -2
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@@ -999,11 +999,12 @@ extern "C" {
*
* @param _value is the value of the symbol. On the value a macro expansion is
* performed and afterwards it is stringified. It shall expand to an integer
* expression understood by the assembler.
* expression understood by the assembler. The value shall be representable
* in the code model of the target architecture.
*
* This macro shall be placed at file scope.
*/
#if defined(__USER_LABEL_PREFIX__)
#if defined(__GNUC__)
#define RTEMS_DEFINE_GLOBAL_SYMBOL( _name, _value ) \
__asm__( \
"\t.globl " RTEMS_XSTRING( RTEMS_SYMBOL_NAME( _name ) ) \