forked from Imagelibrary/binutils-gdb
DWARF expression evaluator is currently using a few different interfaces for memory access: write_memory_with_notification, read_value_memory, read_memory. They all seem incosistent, while some of them even need a struct value typed argument to be present. This patch is simplifying that interface by replacing it with two new low level functions: read_from_memory and write_to_memory. The advantage of this new interface is that it behaves in the same way as the register access interface from the previous patch. Both of these have the same error returning policy, which will be usefull for the following patches. * dwarf2/expr.c (xfer_from_memory): New function. (read_from_memory): New function. (write_to_memory): New function. (rw_pieced_value): Now calls the read_from_memory and write_to_memory functions. Change-Id: Id1f4c9b8127da83dece543e68757ffb1de2afedd