diff options
Diffstat (limited to 'gcc/defaults.h')
| -rw-r--r-- | gcc/defaults.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/defaults.h b/gcc/defaults.h index 80294305850..e68a0651a67 100644 --- a/gcc/defaults.h +++ b/gcc/defaults.h @@ -563,6 +563,12 @@ along with GCC; see the file COPYING3. If not see #define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY #endif +/* Set INCOMING_STACK_BOUNDARY to PREFERRED_STACK_BOUNDARY if it is not + defined. */ +#ifndef INCOMING_STACK_BOUNDARY +#define INCOMING_STACK_BOUNDARY PREFERRED_STACK_BOUNDARY +#endif + #ifndef TARGET_DEFAULT_PACK_STRUCT #define TARGET_DEFAULT_PACK_STRUCT 0 #endif @@ -950,6 +956,21 @@ along with GCC; see the file COPYING3. If not see #define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 0 #endif +/* MAX_STACK_ALIGNMENT is the maximum stack alignment guaranteed by + the backend. MAX_SUPPORTED_STACK_ALIGNMENT is the maximum best + effort stack alignment supported by the backend. If the backend + supports stack alignment, MAX_SUPPORTED_STACK_ALIGNMENT and + MAX_STACK_ALIGNMENT are the same. Otherwise, the incoming stack + boundary will limit the maximum guaranteed stack alignment. */ +#ifdef MAX_STACK_ALIGNMENT +#define MAX_SUPPORTED_STACK_ALIGNMENT MAX_STACK_ALIGNMENT +#else +#define MAX_STACK_ALIGNMENT STACK_BOUNDARY +#define MAX_SUPPORTED_STACK_ALIGNMENT PREFERRED_STACK_BOUNDARY +#endif + +#define SUPPORTS_STACK_ALIGNMENT (MAX_STACK_ALIGNMENT > STACK_BOUNDARY) + #ifndef LOCAL_ALIGNMENT #define LOCAL_ALIGNMENT(TYPE, ALIGNMENT) ALIGNMENT #endif |