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2003-07-02 Jim Blandy <jimb@redhat.com>
+ * s390-tdep.c (struct frame_extra_info): new member:
+ 'stack_bought_valid'.
+ (s390_get_frame_info): Set fextra_info->stack_bought_valid if we
+ initialize fextra_info->stack_bought.
+ (s390_frameless_function_invocation): Don't trust the value of
+ fextra_info_ptr->stack_bought unless
+ fextra_info->stack_bought_valid is set.
+
New S390 prologue analyzer.
* s390-tdep.c (struct prologue_value, enum pv_boolean): New types.
(pv_set_to_unknown, pv_set_to_constant, pv_set_to_register,