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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-12-23 11:46:08 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2015-01-09 14:05:46 +0100 |
| commit | 0d0095f1f051aa32f2f8bc4710602c6f71418fc2 (patch) | |
| tree | 1d82b491c70508ad14f6918abb8c2bd864fb8b4a /cpukit/score/cpu/powerpc/rtems/score | |
| parent | powerpc: Set PPC_DEFAULT_CACHE_LINE_SIZE for e6500 (diff) | |
| download | rtems-0d0095f1f051aa32f2f8bc4710602c6f71418fc2.tar.bz2 | |
powerpc: Add PPC_STACK_ALIGN_POWER
Simplify PPC_STACK_ALIGNMENT definition.
Diffstat (limited to 'cpukit/score/cpu/powerpc/rtems/score')
| -rw-r--r-- | cpukit/score/cpu/powerpc/rtems/score/powerpc.h | 22 |
1 files changed, 6 insertions, 16 deletions
diff --git a/cpukit/score/cpu/powerpc/rtems/score/powerpc.h b/cpukit/score/cpu/powerpc/rtems/score/powerpc.h index 90cbbd1db3..7eaa237125 100644 --- a/cpukit/score/cpu/powerpc/rtems/score/powerpc.h +++ b/cpukit/score/cpu/powerpc/rtems/score/powerpc.h @@ -108,23 +108,13 @@ extern "C" { #define PPC_ABI PPC_ABI_EABI #endif -#if (PPC_ABI == PPC_ABI_SVR4) || defined(__ALTIVEC__) -#define PPC_STACK_ALIGNMENT 16 -#elif (PPC_ABI == PPC_ABI_EABI) -#if 1 -/* Till.S: 2008/07/10; AFAIK, the CPU_STACK_ALIGNMENT is only - * used to align the top of the stack. We don't lose much - * if we always align TOS to 16-bytes but we then are always - * OK, even if the user tells the compiler to generate 16-byte - * alignment. +/* + * Use worst case stack alignment. For the EABI an 8-byte alignment would be + * sufficient. */ -#define PPC_STACK_ALIGNMENT 16 -#else -#define PPC_STACK_ALIGNMENT 8 -#endif -#else -#error "PPC_ABI is not properly defined" -#endif + +#define PPC_STACK_ALIGN_POWER 4 +#define PPC_STACK_ALIGNMENT (1 << PPC_STACK_ALIGN_POWER) /* * Assume PPC_HAS_FPU to be a synonym for _SOFT_FLOAT. |