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score: Add and use RTEMS_SYMBOL_NAME()

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Update #3799.
This commit is contained in:
Sebastian Huber
2020-04-08 19:22:32 +02:00
parent 81e25245fc
commit 3a882e5bc3
1 changed files with 27 additions and 10 deletions
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cpukit/include/rtems/score/basedefs.h
+27 -10
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@@ -321,22 +321,39 @@
#define RTEMS_DECLARE_GLOBAL_SYMBOL( _name ) \
extern char _name[]
/**
* @brief Constructs a symbol name.
*
* @param _name The user defined name of the symbol. The name shall be a valid
* designator. On the name a macro expansion is performed.
*/
#if defined(__USER_LABEL_PREFIX__)
#define RTEMS_SYMBOL_NAME( _name ) \
RTEMS_XCONCAT( __USER_LABEL_PREFIX__, _name )
#else
/* Helper to perform the macro expansion */
#define _RTEMS_SYMBOL_NAME( _name ) _name
#define RTEMS_SYMBOL_NAME( _name ) _RTEMS_SYMBOL_NAME( _name )
#endif
/**
* @brief Defines a global symbol with the specified name and value.
*
* This macro must be placed at file scope.
* This macro shall be placed at file scope.
*
* The name must be a valid designator.
*
* On the value parameters macro expansion is performed and afterwards it is
* stringified. It must expand to an integer literal understood by the
* assembler.
* @param _name The user defined name of the symbol. The name shall be a valid
* designator. On the name a macro expansion is performed and afterwards it
* is stringified.
* @param _value 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.
*/
#if defined(__GNUC__)
#define RTEMS_DEFINE_GLOBAL_SYMBOL( _name, _value ) \
__asm__( \
"\t.globl " RTEMS_XSTRING( __USER_LABEL_PREFIX__ ) #_name \
"\n\t.set " RTEMS_XSTRING( __USER_LABEL_PREFIX__ ) #_name \
"\t.globl " RTEMS_XSTRING( RTEMS_SYMBOL_NAME( _name ) ) \
"\n\t.set " RTEMS_XSTRING( RTEMS_SYMBOL_NAME( _name ) ) \
", " RTEMS_STRING( _value ) "\n" \
)
#else
@@ -355,8 +372,8 @@
__asm__( \
".pushsection \"" _section "\"\n" \
"\t.globl " \
RTEMS_XSTRING( RTEMS_XCONCAT( __USER_LABEL_PREFIX__, _name ) ) "\n" \
RTEMS_XSTRING( RTEMS_XCONCAT( __USER_LABEL_PREFIX__, _name ) ) ":\n" \
RTEMS_XSTRING( RTEMS_SYMBOL_NAME( _name ) ) "\n" \
RTEMS_XSTRING( RTEMS_SYMBOL_NAME( _name ) ) ":\n" \
"\t.popsection\n" \
)
#else