/*  Default entry point:  */
ENTRY(call_start_cpu0);

SECTIONS
{
  /* RTC fast memory holds RTC wake stub code,
     including from any source file named rtc_wake_stub*.c
  */
  .rtc.text :
  {
    . = ALIGN(4);
    *(.rtc.literal .rtc.text)
    *rtc_wake_stub*.*(.literal .text .literal.* .text.*)
    _rtc_text_end = ABSOLUTE(.);
  } > rtc_iram_seg
  
  /*
    This section is required to skip rtc.text area because rtc_iram_seg and 
    rtc_data_seg are reflect the same address space on different buses.
  */
  .rtc.dummy :
  {
    _rtc_dummy_start = ABSOLUTE(.);
    _rtc_fast_start = ABSOLUTE(.);
    . = SIZEOF(.rtc.text);
    _rtc_dummy_end = ABSOLUTE(.);
  } > rtc_data_seg

  /* This section located in RTC FAST Memory area. 
     It holds data marked with RTC_FAST_ATTR attribute. 
     See the file "esp_attr.h" for more information.
  */
  .rtc.force_fast :
  {
    . = ALIGN(4);
    _rtc_force_fast_start = ABSOLUTE(.);
    *(.rtc.force_fast .rtc.force_fast.*)
    . = ALIGN(4) ;
    _rtc_force_fast_end = ABSOLUTE(.);
  } > rtc_data_seg

  /* RTC data section holds RTC wake stub
     data/rodata, including from any source file
     named rtc_wake_stub*.c and the data marked with
     RTC_DATA_ATTR, RTC_RODATA_ATTR attributes.
     The memory location of the data dependent on 
     CONFIG_ESP32_RTCDATA_IN_FAST_MEM option.
  */
  .rtc.data :
  {
    _rtc_data_start = ABSOLUTE(.);
    *(.rtc.data)
    *(.rtc.rodata)
    *rtc_wake_stub*.*(.data .rodata .data.* .rodata.* .bss .bss.*)
    _rtc_data_end = ABSOLUTE(.);
  } > rtc_data_location

  /* RTC bss, from any source file named rtc_wake_stub*.c */
  .rtc.bss (NOLOAD) :
  {
    _rtc_bss_start = ABSOLUTE(.);
    *rtc_wake_stub*.*(.bss .bss.*)
    *rtc_wake_stub*.*(COMMON)
    *(.rtc.bss)
    _rtc_bss_end = ABSOLUTE(.);
  } > rtc_data_location

  /* This section located in RTC SLOW Memory area. 
     It holds data marked with RTC_SLOW_ATTR attribute. 
     See the file "esp_attr.h" for more information.
  */
  .rtc.force_slow :
  {
    . = ALIGN(4);
    _rtc_force_slow_start = ABSOLUTE(.);
    *(.rtc.force_slow .rtc.force_slow.*)
    . = ALIGN(4) ;
    _rtc_force_slow_end = ABSOLUTE(.);
  } > rtc_slow_seg

  /* This section holds data that should not be initialized at power up 
     and will be retained during deep sleep. The section located in 
     RTC SLOW Memory area. User data marked with RTC_NOINIT_ATTR will be placed
     into this section. See the file "esp_attr.h" for more information.
  */
  .rtc_noinit (NOLOAD):
  {
    . = ALIGN(4);
    _rtc_noinit_start = ABSOLUTE(.);
    *(.rtc_noinit .rtc_noinit.*)
    . = ALIGN(4) ;
    _rtc_noinit_end = ABSOLUTE(.);
  } > rtc_slow_seg

  /* Get size of rtc slow data based on rtc_data_location alias */
  _rtc_slow_length = (ORIGIN(rtc_slow_seg) == ORIGIN(rtc_data_location)) 
                        ? (_rtc_noinit_end - _rtc_data_start) 
                        : (_rtc_noinit_end - _rtc_force_slow_start);

  _rtc_fast_length = (ORIGIN(rtc_slow_seg) == ORIGIN(rtc_data_location)) 
                        ? (_rtc_force_fast_end - _rtc_fast_start) 
                        : (_rtc_bss_end - _rtc_fast_start);
  
  ASSERT((_rtc_slow_length <= LENGTH(rtc_slow_seg)),
          "RTC_SLOW segment data does not fit.")
          
  ASSERT((_rtc_fast_length <= LENGTH(rtc_data_seg)),
          "RTC_FAST segment data does not fit.")

  /* Send .iram0 code to iram */
  .iram0.vectors :
  {
    _iram_start = ABSOLUTE(.);
    /* Vectors go to IRAM */
    _init_start = ABSOLUTE(.);
    /* Vectors according to builds/RF-2015.2-win32/esp108_v1_2_s5_512int_2/config.html */
    . = 0x0;
    KEEP(*(.WindowVectors.text));
    . = 0x180;
    KEEP(*(.Level2InterruptVector.text));
    . = 0x1c0;
    KEEP(*(.Level3InterruptVector.text));
    . = 0x200;
    KEEP(*(.Level4InterruptVector.text));
    . = 0x240;
    KEEP(*(.Level5InterruptVector.text));
    . = 0x280;
    KEEP(*(.DebugExceptionVector.text));
    . = 0x2c0;
    KEEP(*(.NMIExceptionVector.text));
    . = 0x300;
    KEEP(*(.KernelExceptionVector.text));
    . = 0x340;
    KEEP(*(.UserExceptionVector.text));
    . = 0x3C0;
    KEEP(*(.DoubleExceptionVector.text));
    . = 0x400;
    *(.*Vector.literal)

    *(.UserEnter.literal);
    *(.UserEnter.text);
    . = ALIGN (16);
    *(.entry.text)
    *(.init.literal)
    *(.init)
    _init_end = ABSOLUTE(.);
  } > iram0_0_seg

  .iram0.text :
  {
    /* Code marked as runnning out of IRAM */
    _iram_text_start = ABSOLUTE(.);
    *(.iram1 .iram1.*)
    *libfreertos.a:(.literal .text .literal.* .text.*)
    *libheap.a:multi_heap.*(.literal .text .literal.* .text.*)
    *libheap.a:multi_heap_poisoning.*(.literal .text .literal.* .text.*)
    *libesp32.a:panic.*(.literal .text .literal.* .text.*)
    *libesp32.a:core_dump.*(.literal .text .literal.* .text.*)
    *libapp_trace.a:(.literal .text .literal.* .text.*)
    *libxtensa-debug-module.a:eri.*(.literal .text .literal.* .text.*)
    *librtc.a:(.literal .text .literal.* .text.*)
    *libsoc.a:rtc_*.*(.literal .text .literal.* .text.*)
    *libsoc.a:cpu_util.*(.literal .text .literal.* .text.*)
    *libhal.a:(.literal .text .literal.* .text.*)
    *libgcc.a:lib2funcs.*(.literal .text .literal.* .text.*)
    *libspi_flash.a:spi_flash_rom_patch.*(.literal .text .literal.* .text.*)
    *libgcov.a:(.literal .text .literal.* .text.*)
    INCLUDE esp32.spiram.rom-functions-iram.ld
    _iram_text_end = ABSOLUTE(.);
    _iram_end = ABSOLUTE(.);
  } > iram0_0_seg

  ASSERT(((_iram_text_end - ORIGIN(iram0_0_seg)) <= LENGTH(iram0_0_seg)),
          "IRAM0 segment data does not fit.")

  .dram0.data :
  {
    _data_start = ABSOLUTE(.);
    _bt_data_start = ABSOLUTE(.);
    *libbt.a:(.data .data.*)
    . = ALIGN (4);
    _bt_data_end = ABSOLUTE(.);
    _btdm_data_start = ABSOLUTE(.);
    *libbtdm_app.a:(.data .data.*)
    . = ALIGN (4);
    _btdm_data_end = ABSOLUTE(.);
    *(.data)
    *(.data.*)
    *(.gnu.linkonce.d.*)
    *(.data1)
    *(.sdata)
    *(.sdata.*)
    *(.gnu.linkonce.s.*)
    *(.sdata2)
    *(.sdata2.*)
    *(.gnu.linkonce.s2.*)
    *(.jcr)
    *(.dram1 .dram1.*)
    *libesp32.a:panic.*(.rodata .rodata.*)
    *libphy.a:(.rodata .rodata.*)
    *libsoc.a:rtc_clk.*(.rodata .rodata.*)
    *libapp_trace.a:(.rodata .rodata.*)
    *libgcov.a:(.rodata .rodata.*)
    *libheap.a:multi_heap.*(.rodata .rodata.*)
    *libheap.a:multi_heap_poisoning.*(.rodata .rodata.*)
    INCLUDE esp32.spiram.rom-functions-dram.ld
    _data_end = ABSOLUTE(.);
    . = ALIGN(4);
  } > dram0_0_seg

  /*This section holds data that should not be initialized at power up.
    The section located in Internal SRAM memory region. The macro _NOINIT
    can be used as attribute to place data into this section.
    See the esp_attr.h file for more information.
  */
  .noinit (NOLOAD):
  {
    . = ALIGN(4);
    _noinit_start = ABSOLUTE(.);
    *(.noinit .noinit.*) 
    . = ALIGN(4) ;
    _noinit_end = ABSOLUTE(.);
  } > dram0_0_seg

  /* Shared RAM */
  .dram0.bss (NOLOAD) :
  {
    . = ALIGN (8);
    _bss_start = ABSOLUTE(.);
    _bt_bss_start = ABSOLUTE(.);
    *libbt.a:(.bss .bss.* COMMON)
    . = ALIGN (4);
    _bt_bss_end = ABSOLUTE(.);
    _btdm_bss_start = ABSOLUTE(.);
    *libbtdm_app.a:(.bss .bss.* COMMON)
    . = ALIGN (4);
    _btdm_bss_end = ABSOLUTE(.);
    *(.dynsbss)
    *(.sbss)
    *(.sbss.*)
    *(.gnu.linkonce.sb.*)
    *(.scommon)
    *(.sbss2)
    *(.sbss2.*)
    *(.gnu.linkonce.sb2.*)
    *(.dynbss)
    *(.bss)
    *(.bss.*)
    *(.share.mem)
    *(.gnu.linkonce.b.*)
    *(COMMON)
    . = ALIGN (8);
    _bss_end = ABSOLUTE(.);
    /* The heap starts right after end of this section */
    _heap_start = ABSOLUTE(.);
  } > dram0_0_seg

  ASSERT(((_bss_end - ORIGIN(dram0_0_seg)) <= LENGTH(dram0_0_seg)),
          "DRAM segment data does not fit.")
          
  .flash.rodata :
  {
    _rodata_start = ABSOLUTE(.);
    *(.rodata)
    *(.rodata.*)
    *(.irom1.text) /* catch stray ICACHE_RODATA_ATTR */
    *(.gnu.linkonce.r.*)
    *(.rodata1)
    __XT_EXCEPTION_TABLE_ = ABSOLUTE(.);
    *(.xt_except_table)
    *(.gcc_except_table .gcc_except_table.*)
    *(.gnu.linkonce.e.*)
    *(.gnu.version_r)
    . = (. + 3) & ~ 3;
    __eh_frame = ABSOLUTE(.);
    KEEP(*(.eh_frame))
    . = (. + 7) & ~ 3;
    /*  C++ constructor and destructor tables, properly ordered:  */
    __init_array_start = ABSOLUTE(.);
    KEEP (*crtbegin.*(.ctors))
    KEEP (*(EXCLUDE_FILE (*crtend.*) .ctors))
    KEEP (*(SORT(.ctors.*)))
    KEEP (*(.ctors))
    __init_array_end = ABSOLUTE(.);
    KEEP (*crtbegin.*(.dtors))
    KEEP (*(EXCLUDE_FILE (*crtend.*) .dtors))
    KEEP (*(SORT(.dtors.*)))
    KEEP (*(.dtors))
    /*  C++ exception handlers table:  */
    __XT_EXCEPTION_DESCS_ = ABSOLUTE(.);
    *(.xt_except_desc)
    *(.gnu.linkonce.h.*)
    __XT_EXCEPTION_DESCS_END__ = ABSOLUTE(.);
    *(.xt_except_desc_end)
    *(.dynamic)
    *(.gnu.version_d)
    /* Addresses of memory regions reserved via
       SOC_RESERVE_MEMORY_REGION() */
    soc_reserved_memory_region_start = ABSOLUTE(.);
    KEEP (*(.reserved_memory_address))
    soc_reserved_memory_region_end = ABSOLUTE(.);
    _rodata_end = ABSOLUTE(.);
    /* Literals are also RO data. */
    _lit4_start = ABSOLUTE(.);
    *(*.lit4)
    *(.lit4.*)
    *(.gnu.linkonce.lit4.*)
    _lit4_end = ABSOLUTE(.);
    . = ALIGN(4);
    _thread_local_start = ABSOLUTE(.);
    *(.tdata)
    *(.tdata.*)
    *(.tbss)
    *(.tbss.*)
    _thread_local_end = ABSOLUTE(.);
    . = ALIGN(4);
  } >drom0_0_seg

  .flash.text :
  {
    _stext = .;
    _text_start = ABSOLUTE(.);
    *(.literal .text .literal.* .text.* .stub .gnu.warning .gnu.linkonce.literal.* .gnu.linkonce.t.*.literal .gnu.linkonce.t.*)
    *(.irom0.text) /* catch stray ICACHE_RODATA_ATTR */
    *(.fini.literal)
    *(.fini)
    *(.gnu.version)
    _text_end = ABSOLUTE(.);
    _etext = .;

    /* Similar to _iram_start, this symbol goes here so it is
       resolved by addr2line in preference to the first symbol in
       the flash.text segment.
    */
    _flash_cache_start = ABSOLUTE(0);
  } >iram0_2_seg
}