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#!/bin/bash
# SPDX-License-Identifier: BSD-3-Clause
#
# ghidra_decompile_project.sh - decompile a function from an already-analyzed
# Ghidra project (run scripts/ghidra_analyze.sh once first). No re-import and
# no analysis, so this takes seconds.
#
# Usage: scripts/ghidra_decompile_project.sh <hex-vaddr> [outfile] [program]
# env: GHIDRA_HOME, PROJECT_DIR, PROJECT_NAME (same as ghidra_analyze.sh)
set -e
HERE="$(cd "$(dirname "$0")" && pwd)"
ROOT="$(cd "$HERE/.." && pwd)"
RUN="$ROOT/run"
VADDR="${1:?usage: $0 <hex-vaddr> [outfile] [program]}"
OUT="${2:-$RUN/fn_$VADDR.c}"
PROGRAM="${3:-libcuda.so.570.144}"
GHIDRA_HOME="${GHIDRA_HOME:-/snap/ghidra/current/ghidra}"
ANALYZE="$GHIDRA_HOME/support/analyzeHeadless"
PROJECT_DIR="${PROJECT_DIR:-$RUN/ghidra-proj}"
PROJECT_NAME="${PROJECT_NAME:-cuda-analysis}"
[ -d "$PROJECT_DIR" ] || { echo "no project at $PROJECT_DIR (run ghidra_analyze.sh)"; exit 1; }
mkdir -p "$RUN"
echo "[*] decompiling $PROGRAM at $VADDR (project) -> $OUT"
"$ANALYZE" "$PROJECT_DIR" "$PROJECT_NAME" \
-process "$PROGRAM" \
-noanalysis \
-scriptPath "$ROOT/ghidra" \
-postScript DecompileAt.java "$VADDR" "$OUT" \
2>&1 | tail -3
[ -f "$OUT" ] || { echo "[FAIL] no output"; exit 1; }
echo "[ok] $OUT"
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