Théophile Bastian
8fa2bc5952
Don't try to write into the ELF file directly, use objcopy. Updated README
59 lines
1.5 KiB
OCaml
59 lines
1.5 KiB
OCaml
(* copy here as quick hack / restructure the file directory *)
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type pre_c_pre_dwarf_entry = {
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location: int64;
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cfa_offset: int64;
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cfa_offset_reg: int
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}
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type pre_c_pre_dwarf_fde = {
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num: int;
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initial_location: int64;
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end_location: int64;
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name: string;
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entries: pre_c_pre_dwarf_entry array
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}
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type pre_c_pre_dwarf = {
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num_fde: int;
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fdes: pre_c_pre_dwarf_fde array
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}
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let dump_pre_c_pre_dwarf_entry e =
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Printf.printf " %8Lx %d+%Ld \n" e.location e.cfa_offset_reg e.cfa_offset
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let dump_pre_c_pre_dwarf_fde f =
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Printf.printf "%s %Lx %Lx\n" f.name f.initial_location f.end_location;
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for i = 0 to Array.length f.entries - 1 do
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dump_pre_c_pre_dwarf_entry f.entries.(i)
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done
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let dump_pre_c_pre_dwarf p =
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for i = 0 to Array.length p.fdes - 1 do
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dump_pre_c_pre_dwarf_fde p.fdes.(i)
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done
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external write_dwarf : string -> string -> pre_c_pre_dwarf -> int
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= "caml_write_dwarf"
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(** ========== USAGE ========== **)
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let use_string =
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Sys.argv.(0) ^ " <marshalled_data> <executable> [<eh_file>]\n" ^
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"<eh_file> defaults to `<executable>.eh_frame`\n" ;;
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let _ =
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if Array.length Sys.argv <= 2 then (
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Format.eprintf "Error: missing argument(s). Usage:\n%s" use_string ;
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exit 1
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) ;
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let eh_path = (if Array.length Sys.argv <= 3
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then (Sys.argv.(2) ^ ".eh_frame")
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else Sys.argv.(3)) in
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let fd = open_in_bin Sys.argv.(1) in
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let pre_c_dwarf = ((Marshal.from_channel fd): pre_c_pre_dwarf) in
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dump_pre_c_pre_dwarf pre_c_dwarf;
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write_dwarf Sys.argv.(2) eh_path pre_c_dwarf
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