diff options
Diffstat (limited to 'gcc/ada/tracebak.c')
| -rw-r--r-- | gcc/ada/tracebak.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/ada/tracebak.c b/gcc/ada/tracebak.c index 23fc5c7..2e29285 100644 --- a/gcc/ada/tracebak.c +++ b/gcc/ada/tracebak.c @@ -219,7 +219,14 @@ struct layout #define FRAME_OFFSET(FP) 0 #define PC_ADJUST -4 -#define STOP_FRAME(CURRENT, TOP_STACK) ((void *) (CURRENT) < (TOP_STACK)) + +/* Eventhough the base PPC ABI states that a toplevel frame entry + should to feature a null backchain, AIX might expose a null return + address instead. */ + +#define STOP_FRAME(CURRENT, TOP_STACK) \ + (((void *) (CURRENT) < (TOP_STACK)) \ + || (CURRENT)->return_address == NULL) /* The PPC ABI has an interesting specificity: the return address saved by a function is located in it's caller's frame, and the save operation only |