#!/usr/bin/env sh
set -eu

nm=${RISCV_NM:-riscv64-unknown-elf-nm}
readelf=${RISCV_READELF:-riscv64-unknown-elf-readelf}
elf=build/task01_scheduler/prog.elf

if "$nm" --defined-only "$elf" | awk '{print $3}' | grep -Eq '^_Z|^__cxa_|^_Unwind_'; then
  echo "unexpected C++ or unwind symbol in the C teaching ELF" >&2
  exit 1
fi

if "$readelf" -S "$elf" | grep -Eq '\.init_array|\.eh_frame|\.gcc_except_table'; then
  echo "unexpected C++ initialization or unwind section in $elf" >&2
  "$readelf" -S "$elf" >&2
  exit 1
fi

for symbol in peer_task_entry high_probe_task_entry verifier_task_entry \
  vApplicationTickHook task01_scheduler_checkpoint \
  task01_scheduler_checkpoint_committed task01_tick_checkpoint_committed \
  xTaskCreate vTaskPrioritySet uxTaskPriorityGet vTaskDelete; do
  if ! "$nm" --defined-only "$elf" | grep -Eq "[[:space:]]${symbol}$"; then
    echo "required C/FreeRTOS symbol is missing: $symbol" >&2
    exit 1
  fi
done

echo "PASS ABI: freestanding C11 scheduler experiment, no C++ runtime"