#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" ); #define REQUIRE_OBJECT(object) \ __asm__ ( ".equ\tneed_" #object ", obj_" #object ); #define PACKED __attribute__((packed)) #define __unused __attribute__((unused)) #define __used __attribute__((used)) #endif /* ASSEMBLY */ #endif /* COMPILER_H */