#!/usr/bin/env bash

# Copyright 2022 The Fuchsia Authors
#
# Use of this source code is governed by a MIT-style
# license that can be found in the LICENSE file or at
# https://opensource.org/licenses/MIT

header() {
  echo "// This file is generated by $0.  DO NOT EDIT."
  echo
  echo '#include <stdint.h>'
  echo '#include "vdso-code.h"'
  echo
  echo "constexpr uint64_t kSysretOffsets[] = {"
}

footer() {
  echo '};'
}

scan() {
  while read define symbol rest; do
    case "$symbol" in
    VDSO_CODE_SYSRET_*)
      echo "    ${symbol},"
      ;;
    esac
  done
}

set -e

case $# in
1)
  exec < "$1"
  ;;
2)
  trap "rm -f '$2'" ERR HUP INT TERM
  exec < "$1" > "$2"
  ;;
esac

header
scan < "$1"
footer