diff options
| author | Andre Przywara <andre.przywara@arm.com> | 2017-01-02 11:48:30 +0000 |
|---|---|---|
| committer | Jagan Teki <jagan@openedev.com> | 2017-01-04 16:37:41 +0100 |
| commit | 2a6713b09b8da58572338abac276aa764bb6eadd (patch) | |
| tree | ddaf3da4360dc6530937b22fd7d1526d7b917ea0 /include/common.h | |
| parent | 1c853629d936f88d7d41bdd01a3bd8c55391e754 (diff) | |
move UL() macro from armv8/mmu.h into common.h
The UL() macro is pretty useful in sharing constants between assembly
and C files while still being able to specify a type for C.
Move the macro from an armv8 specific header into a common header file
to be able to use it by arm code (for instance) as well.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Diffstat (limited to 'include/common.h')
| -rw-r--r-- | include/common.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/include/common.h b/include/common.h index a8d833b989..ee0436bff5 100644 --- a/include/common.h +++ b/include/common.h @@ -15,6 +15,9 @@ typedef volatile unsigned long vu_long; typedef volatile unsigned short vu_short; typedef volatile unsigned char vu_char; +/* Allow sharing constants with type modifiers between C and assembly. */ +#define _AC(X, Y) (X##Y) + #include <config.h> #include <errno.h> #include <asm-offsets.h> @@ -936,7 +939,12 @@ int cpu_disable(int nr); int cpu_release(int nr, int argc, char * const argv[]); #endif -#endif /* __ASSEMBLY__ */ +#else /* __ASSEMBLY__ */ + +/* Drop a C type modifier (like in 3UL) for constants used in assembly. */ +#define _AC(X, Y) X + +#endif /* __ASSEMBLY__ */ #ifdef CONFIG_PPC /* @@ -948,6 +956,9 @@ int cpu_release(int nr, int argc, char * const argv[]); /* Put only stuff here that the assembler can digest */ +/* Declare an unsigned long constant digestable both by C and an assembler. */ +#define UL(x) _AC(x, UL) + #ifdef CONFIG_POST #define CONFIG_HAS_POST #ifndef CONFIG_POST_ALT_LIST |