1 #ifndef _BITS_COMPILER_H
2 #define _BITS_COMPILER_H
4 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
6 /** Dummy relocation type */
7 #define RELOC_TYPE_NONE R_386_NONE
11 /** Declare a function with standard calling conventions */
12 #define __asmcall __attribute__ (( cdecl, regparm(0) ))
15 * Declare a function with libgcc implicit linkage
17 * It seems as though gcc expects its implicit arithmetic functions to
18 * be cdecl, even if -mrtd is specified. This is somewhat
19 * inconsistent; for example, if -mregparm=3 is used then the implicit
20 * functions do become regparm(3).
22 * The implicit calls to memcpy() and memset() which gcc can generate
23 * do not seem to have this inconsistency; -mregparm and -mrtd affect
24 * them in the same way as any other function.
26 * Update (25/4/14): it appears that more recent gcc versions do allow
27 * -mrtd to affect calls to the implicit arithmetic functions. There
28 * is nothing obvious in the gcc changelogs to indicate precisely when
29 * this happened. From experimentation with available gcc versions,
30 * the change occurred sometime between v4.6.3 and v4.7.2. We assume
31 * that only versions up to v4.6.x require the special treatment.
33 #if ( __GNUC__ < 4 ) || ( ( __GNUC__ == 4 ) && ( __GNUC_MINOR__ <= 6 ) )
34 #define __libgcc __attribute__ (( cdecl ))
41 #endif /* _BITS_COMPILER_H */