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https://github.com/notwa/rc
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19 lines
668 B
Bash
Executable File
19 lines
668 B
Bash
Executable File
#!/usr/bin/env sh
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# disassembles a function given its symbolic name.
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# YES_ZSH
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# YES_BASH
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# YES_DASH
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# TODO: actually test that this works with dash.
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function disf() { ### @-
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### disassemble a single function from an unstripped executable, unreliably.
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[ $# -le 2 ] || { printf "%s\n" "$0: too many arguments" >&2; return 1; }
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local exe="${1:?first argument should be an unstripped executable}"
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local symbol="${2:?second argument should be a function name}"
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# note: relies on GNU sed: https://unix.stackexchange.com/a/78485
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objdump -d -C --no-show-raw-insn "$exe" | sed '/<'"$symbol"'>:/,/^$/!d;//d'
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}
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[ "${SOURCING:-0}" -gt 0 ] || disf "$@"
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