#!/bin/bash
# SPDX-License-Identifier: BSD-3-Clause
#
# ###########################################################################
# # WARNING: DEPRECATED - DO NOT USE FOR NEW ANALYSIS (kept for history).   #
# #                                                                         #
# # It passes a FILE virtual address straight to 570.144/ghidra/            #
# # DecompileAt.java, but Ghidra loads these binaries at image base         #
# # 0x100000: the script resolves (and decompiles) the function 0x100000    #
# # bytes too low. It also depends on a project produced by the broken      #
# # ghidra_analyze.sh above.                                                #
# #                                                                         #
# # Replacement: tools/ghidra_decompile_at.sh, which translates the file    #
# # vaddr with tools/ghidra/DecompileAt.java (file-vaddr aware).            #
# ###########################################################################
#
# 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"