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|
#!/bin/sh
# Script to process llvm-dwarfdump --debug-line output and create a normalized table
# Usage: process-debug-line.sh <debug-line.txt>
#
# Output format: CU_FILE LINE COLUMN FILE_NAME [additional_info]
# This strips addresses to make rows unique and adds context about which CU and file each line belongs to
if [ $# -ne 1 ]; then
echo "Usage: $0 <debug-line.txt>" >&2
exit 1
fi
debug_line_file="$1"
if [ ! -f "$debug_line_file" ]; then
echo "Error: File '$debug_line_file' not found" >&2
exit 1
fi
awk '
BEGIN {
cu_count = 0
current_cu_file = ""
# Initialize file names array
for (i = 0; i < 100; i++) {
current_file_names[i] = ""
}
}
# Track debug_line sections (new CU)
/^debug_line\[/ {
cu_count++
current_cu_file = ""
# Clear file names array for new CU
for (i = 0; i < 100; i++) {
current_file_names[i] = ""
}
next
}
# Capture file names and their indices
/^file_names\[.*\]:/ {
# Extract file index using simple string operations
line_copy = $0
gsub(/file_names\[/, "", line_copy)
gsub(/\]:.*/, "", line_copy)
gsub(/[ \t]/, "", line_copy)
file_index = line_copy
getline # Read the next line which contains the actual filename
# Extract filename from name: "filename" format
if (match($0, /name:[ \t]*"/)) {
filename = $0
gsub(/.*name:[ \t]*"/, "", filename)
gsub(/".*/, "", filename)
current_file_names[file_index] = filename
# Extract basename for main CU file (first .c/.cpp/.cc file we see)
if (current_cu_file == "" && match(filename, /\.(c|cpp|cc)$/)) {
cu_filename = filename
gsub(/.*\//, "", cu_filename)
current_cu_file = cu_filename
}
}
next
}
# Process line table entries
/^0x[0-9a-f]+/ {
# Parse the line entry: Address Line Column File ISA Discriminator OpIndex Flags
if (NF >= 4) {
line = $2
column = $3
file_index = $4
# Get the filename for this file index
filename = current_file_names[file_index]
if (filename == "") {
filename = "UNKNOWN_FILE_" file_index
} else {
# Extract just the basename
basename = filename
gsub(/.*\//, "", basename)
filename = basename
}
# Build additional info (flags, etc.)
additional_info = ""
for (i = 8; i <= NF; i++) {
if (additional_info != "") {
additional_info = additional_info " "
}
additional_info = additional_info $i
}
# Output normalized row: CU_FILE LINE COLUMN FILE_NAME [additional_info]
printf "%s %s %s %s", current_cu_file, line, column, filename
if (additional_info != "") {
printf " %s", additional_info
}
printf "\n"
}
}
' "$debug_line_file"
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