---

import sys
import subprocess
import os
import re

def main():
    # Ensure the path to the real objcopy tool is provided
    if len(sys.argv) < 2:
        print("[LMA Filter] Error: No real objcopy path provided.")
        sys.exit(1)

    real_objcopy = sys.argv[1]
    args = sys.argv[2:]
    elf_path = "zephyr.elf"
    
    # Extract the elf path from the arguments if present
    for arg in args:
        if arg.endswith("zephyr.elf"):
            elf_path = arg
            break

    # Skip processing if this is an internal ELF-to-ELF LMA adjustment step by Zephyr
    is_elf_to_elf_adjust = any("--change-section-lma" in arg for arg in args) and ("zephyr.elf" in elf_path) and not any(fmt in " ".join(args) for fmt in ["ihex", "binary"])
    if is_elf_to_elf_adjust:
        sys.exit(0)

    # Detect if the current command is generating the final .hex or .bin file
    is_hex_or_bin_generation = any("--output-target=" in arg for arg in args) or any(fmt in " ".join(args) for fmt in ["ihex", "binary"])

    if is_hex_or_bin_generation:
        # Shift LMA down by 0x20000000 to map SDRAM execution addresses (0x80000000) 
        # to the physical FlexSPI Flash base addresses (0x60000000)
        shift_value = 0x20000000
        global_offset = ["--change-addresses", f"-{hex(shift_value)}"]

        # Execute objcopy with the applied global address shift
        final_cmd = [real_objcopy] + global_offset + args
        subprocess.run(final_cmd, check=True)

        # Try to locate the corresponding readelf utility to print the final memory map
        sdk_bin_dir = os.path.dirname(real_objcopy)
        readelf_bin = os.path.join(sdk_bin_dir, "arm-zephyr-eabi-readelf")
        if not os.path.exists(readelf_bin):
            for file in os.listdir(sdk_bin_dir):
                if file.endswith("readelf"):
                    readelf_bin = os.path.join(sdk_bin_dir, file)
                    break

        # If readelf is found, parse the ELF sections and print a clean memory map summary
        if os.path.exists(readelf_bin):
            res = subprocess.run([readelf_bin, "-SW", elf_path], capture_output=True, text=True)
            if res.returncode == 0:
                print(f"\n[LMA Filter] === FINAL MEMORY MAP FOR FLASH ===")
                print(f"{'Section Name':<28} | {'Original VMA':<12} | {'Resulting LMA (Flash)':<22}")
                print("-" * 72)
                section_regex = re.compile(r'^\s*\[\s*\d+\]\s+([\.\w\-_]+)\s+(\w+)\s+([0-9a-fA-F]{8,16})')
                
                for line in res.stdout.splitlines():
                    match = section_regex.match(line)
                    if not match:
                        continue
                    sec_name, sec_type, vma_str = match.groups()
                    
                    # Ignore debug, symbol, and comment sections
                    if sec_name in [".comment", ".symtab", ".strtab", ".shstrtab"] or sec_name.startswith(".debug"):
                        continue
                    
                    vma_val = int(vma_str, 16)
                    vma_formatted = f"0x{vma_val:08X}"
                    
                    # Fix: Handle NOBITS sections (like BSS/noinit) safely.
                    # They are RAM-only and do not occupy space inside the physical Flash binary.
                    if sec_type == "NOBITS":
                        lma_formatted = "--------"
                        marker = "[RAM-only / Ignored in Flash]"
                    else:
                        resulting_lma = vma_val - shift_value
                        if resulting_lma < 0:
                            resulting_lma &= 0xFFFFFFFF
                        lma_formatted = f"0x{resulting_lma:08X}"
                        
                        # Validate if the calculated LMA fits within the valid i.MX RT1024 4MB Flash boundary (0x60000000 - 0x603FFFFF)
                        if 0x60000000 <= resulting_lma <= 0x603FFFFF:
                            marker = "-> OK (Flash)"
                        else:
                            marker = "[WARNING: Out of Flash Bounds!]"

                    print(f"{sec_name:<28} | {vma_formatted:<12} | {lma_formatted:<22} {marker}")
                print("=" * 72 + "\n")
        else:
            print("[LMA Filter] Applied global LMA shift, but readelf log helper could not find readelf binary.")
    else:
        # Pass-through for any other objcopy calls without modifications
        subprocess.run([real_objcopy] + args, check=True)

if __name__ == "__main__":
    main()