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- #ifndef COMPILER_H
- #define COMPILER_H
-
- /* We export the symbol obj_OBJECT (OBJECT is defined on command-line)
- * as a global symbol, so that the linker can drag in selected object
- * files from the library using -u obj_OBJECT.
- *
- * Not quite sure why cpp requires two levels of macro call in order
- * to actually expand OBJECT...
- */
- #undef _H1
- #define _H1( x, y ) x ## y
- #undef _H2
- #define _H2( x, y ) _H1 ( x, y )
- #define OBJECT_SYMBOL _H2 ( obj_, OBJECT )
- #undef _STR
- #define _STR(s) #s
- #undef _XSTR
- #define _XSTR(s) _STR(s)
- #define OBJECT_SYMBOL_STR _XSTR ( OBJECT_SYMBOL )
-
- #ifdef ASSEMBLY
-
- .globl OBJECT_SYMBOL
- .equ OBJECT_SYMBOL, 0
-
- #else /* ASSEMBLY */
-
- __asm__ ( ".globl\t" OBJECT_SYMBOL_STR );
- __asm__ ( ".equ\t" OBJECT_SYMBOL_STR ", 0" );
-
- /*
- * Macro to allow objects to explicitly drag in other objects by
- * object name. Used by config.c.
- *
- */
- #define REQUIRE_OBJECT(object) \
- __asm__ ( ".equ\tneed_" #object ", obj_" #object );
-
- /*
- * If debug_OBJECT is set to a true value, the macro DBG(...) will
- * expand to printf(...) when compiling OBJECT, and the symbol
- * WITH_DEBUG_MESSAGES will be inserted into the object file.
- *
- */
- #define DEBUG_SYMBOL _H2 ( debug_, OBJECT )
- #if DEBUG_SYMBOL
- #include "console.h"
- #define DBG(...) printf ( __VA_ARGS__ )
- #define DEBUG_SYMBOL_STR _XSTR ( DEBUG_SYMBOL )
- __asm__ ( ".equ\tWITH_DEBUG_MESSAGES, 0" );
- #else
- #define DBG(...)
- #endif
-
- #define PACKED __attribute__((packed))
- #define __unused __attribute__((unused))
- #define __used __attribute__((used))
-
- #endif /* ASSEMBLY */
-
- #endif /* COMPILER_H */
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