gdb functions

[Vineet Sharma, Noida]

Hi All,
		While porting gdb


Q1 In what case does some target need "extra_info" in frame structure.


@2 And in the the new model where is the functinality of the following
deprecated functions  
					
					"XXX_frame_chain()" ,

 
					XXX_init_extra_frame_info (int
fromleaf, struct frame_info *fi),

				      XXX_frame_init_saved_regs (struct
frame_info *fip)


					XXX_init_extra_frame_info ()


shifted?



Q3 In what case do we need these function?




Regards
Vineet