diff options
Diffstat (limited to 'libgcc/generic-morestack.c')
| -rw-r--r-- | libgcc/generic-morestack.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/libgcc/generic-morestack.c b/libgcc/generic-morestack.c index fad3d9b..89b2773 100644 --- a/libgcc/generic-morestack.c +++ b/libgcc/generic-morestack.c @@ -549,6 +549,7 @@ __generic_morestack (size_t *pframe_size, void *old_stack, size_t param_size) char *to; void *ret; size_t i; + size_t aligned; current = __morestack_current_segment; @@ -580,15 +581,19 @@ __generic_morestack (size_t *pframe_size, void *old_stack, size_t param_size) *pframe_size = current->size - param_size; + /* Align the returned stack to a 32-byte boundary. */ + aligned = (param_size + 31) & ~ (size_t) 31; + #ifdef STACK_GROWS_DOWNWARD { char *bottom = (char *) (current + 1) + current->size; - to = bottom - param_size; - ret = bottom - param_size; + to = bottom - aligned; + ret = bottom - aligned; } #else to = current + 1; - ret = (char *) (current + 1) + param_size; + to += aligned - param_size; + ret = (char *) (current + 1) + aligned; #endif /* We don't call memcpy to avoid worrying about the dynamic linker |