Théophile Bastian
3d336de196
Once rbp has been set in the DWARF, if this flag is set, nothing will remove it from the table. This mimicks gcc and allows us to check easily our tables against theirs.
83 lines
1.9 KiB
Bash
Executable file
83 lines
1.9 KiB
Bash
Executable file
#!/bin/bash
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###############################################################################
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USAGE="$0 <binary_input_file> [<binary_output_file>]"
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HELP_TEXT="synthesize_dwarf.sh
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Script that sticks all the parts of dwarf-synthesis together.
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Usage: $USAGE
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The provided <binary_input_file> is expected **NOT** to have any .eh_frame
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section.
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If <binary_output_file> is provided, a binary file equivalent to
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<binary_input_file> that contains an .eh_frame ELF section will be written as
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<binary_output_file>.
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If not, the input file will be overwriten with such a file."
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###############################################################################
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function find_ml_dwarf_write {
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out=$(which "ml_dwarf_write.bin" 2>/dev/null)
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if [ -n "$out" ] ; then
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echo $out
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return 0
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fi
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for location in . "$(dirname $0)" ; do
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out="$location/ml_dwarf_write.bin"
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if [ -x "$out" ] ; then
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echo $out
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return 0
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fi
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done
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return 1
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}
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function bap_synth {
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bap "$INPUT_FILE" \
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--no-byteweight -p dwarfsynth \
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--dwarfsynth-output "$TMP_DIR/marshal" $BAP_ARGS \
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> /dev/null
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return $?
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}
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function dwarf_write_synth {
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$ML_DWARF_WRITE "$TMP_DIR/marshal" "$INPUT_FILE" "$TMP_DIR/eh_frame" \
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> /dev/null
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return $?
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}
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function dwarf_plug {
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objcopy \
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--add-section .eh_frame="$TMP_DIR/eh_frame" \
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"$INPUT_FILE" "$OUTPUT_FILE"
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return $?
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}
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if [ "$#" -lt "1" ] ; then
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>&2 echo -e "Missing argument.\n\n$HELP_TEXT"
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exit 1
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fi
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ML_DWARF_WRITE=$(find_ml_dwarf_write)
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if [ "$?" -ne "0" ] ; then
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>&2 echo -e "Cannot find ml_dwarf_write"
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exit 1
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fi
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INPUT_FILE="$1"
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OUTPUT_FILE="$2"
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if ! [ -f "$INPUT_FILE" ] ; then
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>&2 echo -e "$INPUT_FILE: no such file.\n\n$HELP_TEXT"
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fi
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TMP_DIR="$(mktemp -d)"
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bap_synth \
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&& dwarf_write_synth \
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&& dwarf_plug
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rm -rf "$TMP_DIR"
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