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