How to lookup the value of each parameter from dwarf and memory location
Here are the steps to lookup the parameter value
1) Look into the “info” section from dwarf, “objdump –dwarf=info”. There is a die DW_AT_LOCATION (DW_OP_freg:0), telling you the offset to the frame register.
2) Look at the CIE from .eh_frames section, “objdump –dwarf=frames”. It will tell you the formula of calculating the CFA, such as DW_CFA_def_cfa: r4 (esp) of 4
3) Add the value of DW_OP_freg as an offset to DW_CFA_def_cfa and get the value from that memory location, it is a virtual address, not physical address.
One Response
How to lookup the value of each parameter from dwarf and memory location http://t.co/hlwcxB8IQ6