Fixes a bug in the ld filefor the pic32mx that caused .data to be loaded from the wrong address.

/* PIC32MX linker script for CodeSourcery GCC toolchain
**
** Links a complete application to run from PIC32MX flash, including
** initialization from power-on reset, interrupt vectors, etc.
**
** History:
**   20090926 DRNadler: Per CodeSourcery, ENTRY is __cs3_reset_PIC32MX
**   20090830 DRNadler: Minimal C++ demonstration version (KSEG1)
**   20090713 DRNadler: Reset reason stored in RAM0
**   20090511 DRNadler: Original coding
**
** For reference, see:
** - CodeSourcery G++ 4.3-80 linker script for malta-24kc
** - Microchip "elf32pic32mx.x" generic PIC32 link script
** - Microchip 32MX440F256H processor-specific "procdef.ld" definitions
*/

/*
 * Copyright (c) 2009 Dave Nadler
 * Copyright (c) 2007, 2008 CodeSourcery, Inc.
 *
 * The authors hereby grant permission to use, copy, modify, distribute,
 * and license this software and its documentation for any purpose, provided
 * that existing copyright notices are retained in all copies and that this
 * notice is included verbatim in any distributions.  No written agreement,
 * license, or royalty fee is required for any of the authorized uses.
 * Modifications to this software may be copyrighted by their authors
 * and need not follow the licensing terms described here, provided that
 * the new terms are clearly indicated on the first page of each file where
 * they apply.
 */
OUTPUT_ARCH(mips)
ENTRY(__cs3_reset_PIC32MX) /* for debugger support, use actual HW-level entry and not _start */
SEARCH_DIR(.)
/* Force repeated search of CS3 and GCC libraries */
GROUP(-lcs3hal -lgcc -lc -lcs3 -lcs3unhosted)
/**/

/*
** NOTE: Device programmers require PIC32MX "physical" addresses.
** PIC32MX "physical" addresses ::= "virtual" addresses & 0x1FFFffff
** LD's >AT directive is incapable of performing this mapping,
** as it does not respect alignment/padding performed in the virtual space.
** Therefore, this address mask operation must be performed by:
** - address masking by the device programmer's software, or
** - post-processing of ELF or HEX file prior device programming
*/

MEMORY
{
  ram0 (!r!x) : ORIGIN = 0xA0000000, LENGTH = 16     /* tiny part of RAM reserved for startup code */
  ram  (!r!x) : ORIGIN = 0xA0000010, LENGTH = 64K-16 /* not read-only, not executable */
  /*
  ** Memory map here is based on executing in KSEG1 mode.
  ** PIC32MX flash is broken into user flash and boot flash.
  ** Boot flash contains the configuration words required for reset.
  ** The following are KSEG1 logical addresses (??? should change to KSEG0 to enable caches).
  */
  PIC32MX_flash_userboot (rx) : ORIGIN = 0xBD000000, LENGTH = 0x1000
  PIC32MX_flash_user (rx) : ORIGIN = 0xBD001000, LENGTH = 512K - 4K /*we skipped the first page to allow for the interrupt vector table. There is a lot of free space there, but linking needs to flow around existing absolute sections there. */
  /*
  ** When PIC32MX comes out of reset, it branches to the start of the boot flash
  ** The last (4kb) page in Boot Flash Memory contains the DEBUG Page, which is reserved for
  ** use by (some) debugger tool while debugging (by convention, not by hardware).
  */
  PIC32MX_flash_boot (rx) : ORIGIN = 0xBFC00000, LENGTH = 0x0 /* Don't allow stuff in the boot flash, there is a bootloader there */
}

/*
** Interrupt vector spacing 1 (ie 0x20 or 32 bytes/vector).
** TEMPORARY: located at end of bootflash for now (this is "debug page")...
** 0xBFC03000-(0x10 config registers + 0x200+ (64 vectors * x20))= 0xBFC025F0
*/
_vector_spacing = 0x00000001;
_ebase_address  = 0xBD000000; /* must be on a 4kb page boundary; rounded down */

/* These force the linker to search for particular symbols from
 * the start of the link process and thus ensure the user's
 * overrides are picked up
 */
EXTERN(__cs3_reset_PIC32MX)
EXTERN(_start)
EXTERN(__cs3_start_c main __cs3_stack __cs3_heap_end)

/*
 * Provide for a minimum stack and heap size
 * - _min_stack_size - represents the minimum space that must be made
 *                     available for the stack.  Can be overridden from
 *                     the command line using the linker's --defsym option.
 * - _min_heap_size  - represents the minimum space that must be made
 *                     available for the heap.  Can be overridden from
 *                     the command line using the linker's --defsym option.
 */
EXTERN (_min_stack_size _min_heap_size)
PROVIDE(_min_stack_size = 9k) ;
PROVIDE(_min_heap_size  = 9k) ;
PROVIDE(__cs3_heap_start = _end );
PROVIDE(__cs3_heap_end = __cs3_region_start_ram + __cs3_region_size_ram - _min_stack_size);
PROVIDE(__cs3_stack = __cs3_region_start_ram + __cs3_region_size_ram); /* stack grows down from end of RAM */

HEAP_SPACE_AVAILABLE = (__cs3_heap_end - __cs3_heap_start);
ASSERT( HEAP_SPACE_AVAILABLE >= _min_heap_size , "Not enough heap space");

PROVIDE(__cs3_region_num = (__cs3_regions_end - __cs3_regions) / 20);

SECTIONS
{
  /*
  ** First thing in  flash area must be 'reset' code, which must be
  ** short enough it doesn't land in bootstrap exception address (unless
  ** bootstrap exception is unused).
  */
  .boot_flash_text :
  {
    PROVIDE(__cs3_reset_PIC32MX = _start);
    __cs3_reset = __cs3_reset_PIC32MX;
    *(.cs3.reset)

  } >PIC32MX_flash_userboot

  /*
  ** "Normal" code in user flash
  */
  .text :
  {
    CREATE_OBJECT_SYMBOLS /* create symbols for each input file - why ??? */

    __cs3_region_start_rom = .;
    *(.cs3.region-head.rom)
    ASSERT (. == __cs3_region_start_rom, ".cs3.region-head.rom not permitted");

    /* "normal" code follows... */
    *(.text .text.* .gnu.linkonce.t.*)

    . = ALIGN(0x4);
    KEEP (*crtbegin.o(.jcr))
    KEEP (*(EXCLUDE_FILE (*crtend.o) .jcr))
    KEEP (*crtend.o(.jcr))

    . = ALIGN(0x4);
    *(.gcc_except_table .gcc_except_table.*)
    *(.gnu_extab .gnu_extab.*)
  } >PIC32MX_flash_user

  .eh_frame_hdr : ALIGN (4)
  {
    KEEP (*(.eh_frame_hdr))
    *(.eh_frame_entry .eh_frame_entry.*)
  } >PIC32MX_flash_user

  .eh_frame : ALIGN (4)
  {
    KEEP (*(.eh_frame .eh_frame.*))
  }  >PIC32MX_flash_user

  /* MDI semihosting uses a pointer in this section.  */
  .sdeosabi : ALIGN (4)
  {
    *(.sdeosabi)
  } >ram

  .rodata : ALIGN (4)
  {
    *(.rodata .rodata.* .gnu.linkonce.r.*)

    . = ALIGN(4);
    KEEP(*(.init))

    . = ALIGN(4);
    __preinit_array_start = .;
    KEEP (*(.preinit_array))
    __preinit_array_end = .;

    . = ALIGN(4);
    __init_array_start = .;
    KEEP (*(SORT(.init_array.*)))
    KEEP (*(.init_array))
    __init_array_end = .;

    . = ALIGN(4);
    KEEP(*(.fini))

    . = ALIGN(4);
    __fini_array_start = .;
    KEEP (*(.fini_array))
    KEEP (*(SORT(.fini_array.*)))
    __fini_array_end = .;

    . = ALIGN(0x4);
    KEEP (*crtbegin.o(.ctors))
    KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
    KEEP (*(SORT(.ctors.*)))
    KEEP (*crtend.o(.ctors))

    . = ALIGN(0x4);
    KEEP (*crtbegin.o(.dtors))
    KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
    KEEP (*(SORT(.dtors.*)))
    KEEP (*crtend.o(.dtors))

    *(.lit)

    . = ALIGN(4);
    __cs3_regions = .;
    LONG (0)
    LONG (__cs3_region_init_ram)
    LONG (__cs3_region_start_ram)
    LONG (__cs3_region_init_size_ram)
    LONG (__cs3_region_zero_size_ram)
    __cs3_regions_end = .;

    . = ALIGN (8);
    /* Redundant, removed: . = ALIGN (8); */

    _etext = .; /* first double-word past end of text, and start address for RAM initialization data stored in ROM */
  }  >PIC32MX_flash_user

  __cs3_region_size_rom = LENGTH(PIC32MX_flash_user); /* just total size of flash */

  /*
  ** Initialized data is linked for RAM, but placed in ROM using the AT> directive.
  ** Startup code copies it to RAM during initialization.
  ** WARNING: Must follow _etext !!
  */
  .data : ALIGN (8)
  {
    __cs3_region_start_ram = .;
    *(.got.plt) *(.got)
    *(.shdata)
    *(.data .data.* .gnu.linkonce.d.*)
    . = ALIGN(8);
    /*
    ** GP-relative addressing permits fast access via single instruction addressing,
    ** using a signed 16-bit offset (i.e. -32768 to 32767) from the gp register.
    ** Set GP to the middle of the "small data" area, then link in up to 64k
    ** of "small data"....
    */
    _gp = . + 0x8000; /* beginning of "small data" plus 32k */
    *(.lit8)
    *(.lit4)
    *(.sdata .sdata.* .gnu.linkonce.s.*)

    /* this magic is needed for the device tables of openMRN */
    . = ALIGN (8);
    KEEP(*( SORT (.device.table.*))) ;

    . = ALIGN (8);
    *(.ram)
    _edata = .;
  } >ram  AT>PIC32MX_flash_user

  /* Wrong, length just gives 256k size of flash: USER_FLASH_USED = LENGTH(PIC32MX_flash_user)+SIZEOF(.data); */

  /* DRN: The following is wrong; doesn't mark end of RAM copy...
  /* For diagnostic use only, mark end of initialized-data copy in ROM */
  /* .edata_copy_end :
  /* {
  /*   _edata_copy_end = .;
  /*   LONG(0) /* force LD to output this section (empty sections are discarded) */
  /* } >PIC32MX_flash_user
  */

  /* data written by startup code and NOT to be initialized by CS3 */
  .startup_data :
  {
    *(.reset_data)
  } >ram0

  /* Un-initialized data, zero'd by CS3 C-language initialization module */
  .bss :
  {
    *(.sbss .sbss.* .gnu.linkonce.sb.*)
    *(.scommon)
    *(.shbss)
    *(.bss .bss.* .gnu.linkonce.b.*)
    *(COMMON)
    . = ALIGN (8);
    *(.ram.b)
    _end = .;
    __end = .;
  } >ram

  /* __cs3_region_end_ram is deprecated */
  /*__cs3_region_end_ram = __cs3_region_start_ram + LENGTH(ram);*/
  __cs3_region_size_ram = LENGTH(ram);
  /* WRONG: load address is PHYSICAL, not logical address:  __cs3_region_init_ram = LOADADDR (.data);  WRONG */
  /*  __cs3_region_init_ram = _etext; /* DRN updated this; seems correct... */
  __cs3_region_init_ram = LOADADDR(.data);
  __cs3_region_init_size_ram = _edata - ADDR (.data);
  __cs3_region_zero_size_ram = _end - _edata;

  /* Compute space available for stack+heap... */
  AVAILABLE_RAM_FOR_STACK_PLUS_HEAP = LENGTH(ram)-(SIZEOF(.data)+SIZEOF(.bss));

  /* ============================  Interrupt Branch Vectors  =========================== */
  .gen_exception _ebase_address + 0x180 :
  {
    KEEP(*(.gen_handler))
  }

  .vector_0 _ebase_address + 0x200 :
  {
    KEEP(*(.vector_0))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_0) <= (_vector_spacing << 5), "function at exception vector 0 too large")
  .vector_1 _ebase_address + 0x200 + (_vector_spacing << 5) * 1 :
  {
    KEEP(*(.vector_1))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_1) <= (_vector_spacing << 5), "function at exception vector 1 too large")
  .vector_2 _ebase_address + 0x200 + (_vector_spacing << 5) * 2 :
  {
    KEEP(*(.vector_2))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_2) <= (_vector_spacing << 5), "function at exception vector 2 too large")
  .vector_3 _ebase_address + 0x200 + (_vector_spacing << 5) * 3 :
  {
    KEEP(*(.vector_3))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_3) <= (_vector_spacing << 5), "function at exception vector 3 too large")
  .vector_4 _ebase_address + 0x200 + (_vector_spacing << 5) * 4 :
  {
    KEEP(*(.vector_4))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_4) <= (_vector_spacing << 5), "function at exception vector 4 too large")
  .vector_5 _ebase_address + 0x200 + (_vector_spacing << 5) * 5 :
  {
    KEEP(*(.vector_5))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_5) <= (_vector_spacing << 5), "function at exception vector 5 too large")
  .vector_6 _ebase_address + 0x200 + (_vector_spacing << 5) * 6 :
  {
    KEEP(*(.vector_6))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_6) <= (_vector_spacing << 5), "function at exception vector 6 too large")
  .vector_7 _ebase_address + 0x200 + (_vector_spacing << 5) * 7 :
  {
    KEEP(*(.vector_7))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_7) <= (_vector_spacing << 5), "function at exception vector 7 too large")
  .vector_8 _ebase_address + 0x200 + (_vector_spacing << 5) * 8 :
  {
    KEEP(*(.vector_8))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_8) <= (_vector_spacing << 5), "function at exception vector 8 too large")
  .vector_9 _ebase_address + 0x200 + (_vector_spacing << 5) * 9 :
  {
    KEEP(*(.vector_9))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_9) <= (_vector_spacing << 5), "function at exception vector 9 too large")
  .vector_10 _ebase_address + 0x200 + (_vector_spacing << 5) * 10 :
  {
    KEEP(*(.vector_10))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_10) <= (_vector_spacing << 5), "function at exception vector 10 too large")
  .vector_11 _ebase_address + 0x200 + (_vector_spacing << 5) * 11 :
  {
    KEEP(*(.vector_11))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_11) <= (_vector_spacing << 5), "function at exception vector 11 too large")
  .vector_12 _ebase_address + 0x200 + (_vector_spacing << 5) * 12 :
  {
    KEEP(*(.vector_12))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_12) <= (_vector_spacing << 5), "function at exception vector 12 too large")
  .vector_13 _ebase_address + 0x200 + (_vector_spacing << 5) * 13 :
  {
    KEEP(*(.vector_13))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_13) <= (_vector_spacing << 5), "function at exception vector 13 too large")
  .vector_14 _ebase_address + 0x200 + (_vector_spacing << 5) * 14 :
  {
    KEEP(*(.vector_14))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_14) <= (_vector_spacing << 5), "function at exception vector 14 too large")
  .vector_15 _ebase_address + 0x200 + (_vector_spacing << 5) * 15 :
  {
    KEEP(*(.vector_15))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_15) <= (_vector_spacing << 5), "function at exception vector 15 too large")
  .vector_16 _ebase_address + 0x200 + (_vector_spacing << 5) * 16 :
  {
    KEEP(*(.vector_16))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_16) <= (_vector_spacing << 5), "function at exception vector 16 too large")
  .vector_17 _ebase_address + 0x200 + (_vector_spacing << 5) * 17 :
  {
    KEEP(*(.vector_17))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_17) <= (_vector_spacing << 5), "function at exception vector 17 too large")
  .vector_18 _ebase_address + 0x200 + (_vector_spacing << 5) * 18 :
  {
    KEEP(*(.vector_18))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_18) <= (_vector_spacing << 5), "function at exception vector 18 too large")
  .vector_19 _ebase_address + 0x200 + (_vector_spacing << 5) * 19 :
  {
    KEEP(*(.vector_19))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_19) <= (_vector_spacing << 5), "function at exception vector 19 too large")
  .vector_20 _ebase_address + 0x200 + (_vector_spacing << 5) * 20 :
  {
    KEEP(*(.vector_20))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_20) <= (_vector_spacing << 5), "function at exception vector 20 too large")
  .vector_21 _ebase_address + 0x200 + (_vector_spacing << 5) * 21 :
  {
    KEEP(*(.vector_21))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_21) <= (_vector_spacing << 5), "function at exception vector 21 too large")
  .vector_22 _ebase_address + 0x200 + (_vector_spacing << 5) * 22 :
  {
    KEEP(*(.vector_22))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_22) <= (_vector_spacing << 5), "function at exception vector 22 too large")
  .vector_23 _ebase_address + 0x200 + (_vector_spacing << 5) * 23 :
  {
    KEEP(*(.vector_23))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_23) <= (_vector_spacing << 5), "function at exception vector 23 too large")
  .vector_24 _ebase_address + 0x200 + (_vector_spacing << 5) * 24 :
  {
    KEEP(*(.vector_24))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_24) <= (_vector_spacing << 5), "function at exception vector 24 too large")
  .vector_25 _ebase_address + 0x200 + (_vector_spacing << 5) * 25 :
  {
    KEEP(*(.vector_25))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_25) <= (_vector_spacing << 5), "function at exception vector 25 too large")
  .vector_26 _ebase_address + 0x200 + (_vector_spacing << 5) * 26 :
  {
    KEEP(*(.vector_26))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_26) <= (_vector_spacing << 5), "function at exception vector 26 too large")
  .vector_27 _ebase_address + 0x200 + (_vector_spacing << 5) * 27 :
  {
    KEEP(*(.vector_27))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_27) <= (_vector_spacing << 5), "function at exception vector 27 too large")
  .vector_28 _ebase_address + 0x200 + (_vector_spacing << 5) * 28 :
  {
    KEEP(*(.vector_28))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_28) <= (_vector_spacing << 5), "function at exception vector 28 too large")
  .vector_29 _ebase_address + 0x200 + (_vector_spacing << 5) * 29 :
  {
    KEEP(*(.vector_29))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_29) <= (_vector_spacing << 5), "function at exception vector 29 too large")
  .vector_30 _ebase_address + 0x200 + (_vector_spacing << 5) * 30 :
  {
    KEEP(*(.vector_30))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_30) <= (_vector_spacing << 5), "function at exception vector 30 too large")
  .vector_31 _ebase_address + 0x200 + (_vector_spacing << 5) * 31 :
  {
    KEEP(*(.vector_31))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_31) <= (_vector_spacing << 5), "function at exception vector 31 too large")
  .vector_32 _ebase_address + 0x200 + (_vector_spacing << 5) * 32 :
  {
    KEEP(*(.vector_32))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_32) <= (_vector_spacing << 5), "function at exception vector 32 too large")
  .vector_33 _ebase_address + 0x200 + (_vector_spacing << 5) * 33 :
  {
    KEEP(*(.vector_33))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_33) <= (_vector_spacing << 5), "function at exception vector 33 too large")
  .vector_34 _ebase_address + 0x200 + (_vector_spacing << 5) * 34 :
  {
    KEEP(*(.vector_34))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_34) <= (_vector_spacing << 5), "function at exception vector 34 too large")
  .vector_35 _ebase_address + 0x200 + (_vector_spacing << 5) * 35 :
  {
    KEEP(*(.vector_35))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_35) <= (_vector_spacing << 5), "function at exception vector 35 too large")
  .vector_36 _ebase_address + 0x200 + (_vector_spacing << 5) * 36 :
  {
    KEEP(*(.vector_36))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_36) <= (_vector_spacing << 5), "function at exception vector 36 too large")
  .vector_37 _ebase_address + 0x200 + (_vector_spacing << 5) * 37 :
  {
    KEEP(*(.vector_37))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_37) <= (_vector_spacing << 5), "function at exception vector 37 too large")
  .vector_38 _ebase_address + 0x200 + (_vector_spacing << 5) * 38 :
  {
    KEEP(*(.vector_38))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_38) <= (_vector_spacing << 5), "function at exception vector 38 too large")
  .vector_39 _ebase_address + 0x200 + (_vector_spacing << 5) * 39 :
  {
    KEEP(*(.vector_39))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_39) <= (_vector_spacing << 5), "function at exception vector 39 too large")
  .vector_40 _ebase_address + 0x200 + (_vector_spacing << 5) * 40 :
  {
    KEEP(*(.vector_40))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_40) <= (_vector_spacing << 5), "function at exception vector 40 too large")
  .vector_41 _ebase_address + 0x200 + (_vector_spacing << 5) * 41 :
  {
    KEEP(*(.vector_41))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_41) <= (_vector_spacing << 5), "function at exception vector 41 too large")
  .vector_42 _ebase_address + 0x200 + (_vector_spacing << 5) * 42 :
  {
    KEEP(*(.vector_42))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_42) <= (_vector_spacing << 5), "function at exception vector 42 too large")
  .vector_43 _ebase_address + 0x200 + (_vector_spacing << 5) * 43 :
  {
    KEEP(*(.vector_43))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_43) <= (_vector_spacing << 5), "function at exception vector 43 too large")
  .vector_44 _ebase_address + 0x200 + (_vector_spacing << 5) * 44 :
  {
    KEEP(*(.vector_44))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_44) <= (_vector_spacing << 5), "function at exception vector 44 too large")
  .vector_45 _ebase_address + 0x200 + (_vector_spacing << 5) * 45 :
  {
    KEEP(*(.vector_45))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_45) <= (_vector_spacing << 5), "function at exception vector 45 too large")
  .vector_46 _ebase_address + 0x200 + (_vector_spacing << 5) * 46 :
  {
    KEEP(*(.vector_46))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_46) <= (_vector_spacing << 5), "function at exception vector 46 too large")
  .vector_47 _ebase_address + 0x200 + (_vector_spacing << 5) * 47 :
  {
    KEEP(*(.vector_47))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_47) <= (_vector_spacing << 5), "function at exception vector 47 too large")
  .vector_48 _ebase_address + 0x200 + (_vector_spacing << 5) * 48 :
  {
    KEEP(*(.vector_48))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_48) <= (_vector_spacing << 5), "function at exception vector 48 too large")
  .vector_49 _ebase_address + 0x200 + (_vector_spacing << 5) * 49 :
  {
    KEEP(*(.vector_49))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_49) <= (_vector_spacing << 5), "function at exception vector 49 too large")
  .vector_50 _ebase_address + 0x200 + (_vector_spacing << 5) * 50 :
  {
    KEEP(*(.vector_50))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_50) <= (_vector_spacing << 5), "function at exception vector 50 too large")
  .vector_51 _ebase_address + 0x200 + (_vector_spacing << 5) * 51 :
  {
    KEEP(*(.vector_51))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_51) <= (_vector_spacing << 5), "function at exception vector 51 too large")
  .vector_52 _ebase_address + 0x200 + (_vector_spacing << 5) * 52 :
  {
    KEEP(*(.vector_52))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_52) <= (_vector_spacing << 5), "function at exception vector 52 too large")
  .vector_53 _ebase_address + 0x200 + (_vector_spacing << 5) * 53 :
  {
    KEEP(*(.vector_53))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_53) <= (_vector_spacing << 5), "function at exception vector 53 too large")
  .vector_54 _ebase_address + 0x200 + (_vector_spacing << 5) * 54 :
  {
    KEEP(*(.vector_54))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_54) <= (_vector_spacing << 5), "function at exception vector 54 too large")
  .vector_55 _ebase_address + 0x200 + (_vector_spacing << 5) * 55 :
  {
    KEEP(*(.vector_55))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_55) <= (_vector_spacing << 5), "function at exception vector 55 too large")
  .vector_56 _ebase_address + 0x200 + (_vector_spacing << 5) * 56 :
  {
    KEEP(*(.vector_56))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_56) <= (_vector_spacing << 5), "function at exception vector 56 too large")
  .vector_57 _ebase_address + 0x200 + (_vector_spacing << 5) * 57 :
  {
    KEEP(*(.vector_57))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_57) <= (_vector_spacing << 5), "function at exception vector 57 too large")
  .vector_58 _ebase_address + 0x200 + (_vector_spacing << 5) * 58 :
  {
    KEEP(*(.vector_58))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_58) <= (_vector_spacing << 5), "function at exception vector 58 too large")
  .vector_59 _ebase_address + 0x200 + (_vector_spacing << 5) * 59 :
  {
    KEEP(*(.vector_59))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_59) <= (_vector_spacing << 5), "function at exception vector 59 too large")
  .vector_60 _ebase_address + 0x200 + (_vector_spacing << 5) * 60 :
  {
    KEEP(*(.vector_60))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_60) <= (_vector_spacing << 5), "function at exception vector 60 too large")
  .vector_61 _ebase_address + 0x200 + (_vector_spacing << 5) * 61 :
  {
    KEEP(*(.vector_61))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_61) <= (_vector_spacing << 5), "function at exception vector 61 too large")
  .vector_62 _ebase_address + 0x200 + (_vector_spacing << 5) * 62 :
  {
    KEEP(*(.vector_62))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_62) <= (_vector_spacing << 5), "function at exception vector 62 too large")
  .vector_63 _ebase_address + 0x200 + (_vector_spacing << 5) * 63 :
  {
    KEEP(*(.vector_63))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_63) <= (_vector_spacing << 5), "function at exception vector 63 too large")
  /* ============================  End Interrupt Branch Vectors  =========================== */

  .stab 0 (NOLOAD) : { *(.stab) }
  .stabstr 0 (NOLOAD) : { *(.stabstr) }
  /* DWARF debug sections.
   * Symbols in the DWARF debugging sections are relative to the beginning
   * of the section so we begin them at 0.  */
  /* DWARF 1 */
  .debug          0 : { *(.debug) }
  .line           0 : { *(.line) }
  /* GNU DWARF 1 extensions */
  .debug_srcinfo  0 : { *(.debug_srcinfo) }
  .debug_sfnames  0 : { *(.debug_sfnames) }
  /* DWARF 1.1 and DWARF 2 */
  .debug_aranges  0 : { *(.debug_aranges) }
  .debug_pubnames 0 : { *(.debug_pubnames) }
  /* DWARF 2 */
  .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
  .debug_abbrev   0 : { *(.debug_abbrev) }
  .debug_line     0 : { *(.debug_line) }
  .debug_frame    0 : { *(.debug_frame) }
  .debug_str      0 : { *(.debug_str) }
  .debug_loc      0 : { *(.debug_loc) }
  .debug_macinfo  0 : { *(.debug_macinfo) }
  /* SGI/MIPS DWARF 2 extensions */
  .debug_weaknames 0 : { *(.debug_weaknames) }
  .debug_funcnames 0 : { *(.debug_funcnames) }
  .debug_typenames 0 : { *(.debug_typenames) }
  .debug_varnames  0 : { *(.debug_varnames) }
}

/* PIC32MX linker script for CodeSourcery GCC toolchain
**
** Links a complete application to run from PIC32MX flash, including
** initialization from power-on reset, interrupt vectors, etc.
**
** History:
**   20090926 DRNadler: Per CodeSourcery, ENTRY is __cs3_reset_PIC32MX
**   20090830 DRNadler: Minimal C++ demonstration version (KSEG1)
**   20090713 DRNadler: Reset reason stored in RAM0
**   20090511 DRNadler: Original coding
**
** For reference, see:
** - CodeSourcery G++ 4.3-80 linker script for malta-24kc
** - Microchip "elf32pic32mx.x" generic PIC32 link script
** - Microchip 32MX440F256H processor-specific "procdef.ld" definitions
*/

/*
 * Copyright (c) 2009 Dave Nadler
 * Copyright (c) 2007, 2008 CodeSourcery, Inc.
 *
 * The authors hereby grant permission to use, copy, modify, distribute,
 * and license this software and its documentation for any purpose, provided
 * that existing copyright notices are retained in all copies and that this
 * notice is included verbatim in any distributions.  No written agreement,
 * license, or royalty fee is required for any of the authorized uses.
 * Modifications to this software may be copyrighted by their authors
 * and need not follow the licensing terms described here, provided that
 * the new terms are clearly indicated on the first page of each file where
 * they apply.
 */
OUTPUT_ARCH(mips)
ENTRY(__cs3_reset_PIC32MX) /* for debugger support, use actual HW-level entry and not _start */
SEARCH_DIR(.)
/* Force repeated search of CS3 and GCC libraries */
GROUP(-lcs3hal -lgcc -lc -lcs3 -lcs3unhosted)
/**/

/*
** NOTE: Device programmers require PIC32MX "physical" addresses.
** PIC32MX "physical" addresses ::= "virtual" addresses & 0x1FFFffff
** LD's >AT directive is incapable of performing this mapping,
** as it does not respect alignment/padding performed in the virtual space.
** Therefore, this address mask operation must be performed by:
** - address masking by the device programmer's software, or
** - post-processing of ELF or HEX file prior device programming
*/

MEMORY
{
  ram0 (!r!x) : ORIGIN = 0xA0000000, LENGTH = 16     /* tiny part of RAM reserved for startup code */
  ram  (!r!x) : ORIGIN = 0xA0000010, LENGTH = 64K-16 /* not read-only, not executable */
  /*
  ** Memory map here is based on executing in KSEG1 mode.
  ** PIC32MX flash is broken into user flash and boot flash.
  ** Boot flash contains the configuration words required for reset.
  ** The following are KSEG1 logical addresses (??? should change to KSEG0 to enable caches).
  */
  PIC32MX_flash_userboot (rx) : ORIGIN = 0xBD000000, LENGTH = 0x1000
  PIC32MX_flash_user (rx) : ORIGIN = 0xBD001000, LENGTH = 512K - 4K /*we skipped the first page to allow for the interrupt vector table. There is a lot of free space there, but linking needs to flow around existing absolute sections there. */
  /*
  ** When PIC32MX comes out of reset, it branches to the start of the boot flash
  ** The last (4kb) page in Boot Flash Memory contains the DEBUG Page, which is reserved for
  ** use by (some) debugger tool while debugging (by convention, not by hardware).
  */
  PIC32MX_flash_boot (rx) : ORIGIN = 0xBFC00000, LENGTH = 0x0 /* Don't allow stuff in the boot flash, there is a bootloader there */
}

/*
** Interrupt vector spacing 1 (ie 0x20 or 32 bytes/vector).
** TEMPORARY: located at end of bootflash for now (this is "debug page")...
** 0xBFC03000-(0x10 config registers + 0x200+ (64 vectors * x20))= 0xBFC025F0
*/
_vector_spacing = 0x00000001;
_ebase_address  = 0xBD000000; /* must be on a 4kb page boundary; rounded down */

/* These force the linker to search for particular symbols from
 * the start of the link process and thus ensure the user's
 * overrides are picked up
 */
EXTERN(__cs3_reset_PIC32MX)
EXTERN(_start)
EXTERN(__cs3_start_c main __cs3_stack __cs3_heap_end)

/*
 * Provide for a minimum stack and heap size
 * - _min_stack_size - represents the minimum space that must be made
 *                     available for the stack.  Can be overridden from
 *                     the command line using the linker's --defsym option.
 * - _min_heap_size  - represents the minimum space that must be made
 *                     available for the heap.  Can be overridden from
 *                     the command line using the linker's --defsym option.
 */
EXTERN (_min_stack_size _min_heap_size)
PROVIDE(_min_stack_size = 9k) ;
PROVIDE(_min_heap_size  = 9k) ;
PROVIDE(__cs3_heap_start = _end );
PROVIDE(__cs3_heap_end = __cs3_region_start_ram + __cs3_region_size_ram - _min_stack_size);
PROVIDE(__cs3_stack = __cs3_region_start_ram + __cs3_region_size_ram); /* stack grows down from end of RAM */

HEAP_SPACE_AVAILABLE = (__cs3_heap_end - __cs3_heap_start);
ASSERT( HEAP_SPACE_AVAILABLE >= _min_heap_size , "Not enough heap space");

PROVIDE(__cs3_region_num = (__cs3_regions_end - __cs3_regions) / 20);

SECTIONS
{
  /*
  ** First thing in  flash area must be 'reset' code, which must be
  ** short enough it doesn't land in bootstrap exception address (unless
  ** bootstrap exception is unused).
  */
  .boot_flash_text :
  {
    PROVIDE(__cs3_reset_PIC32MX = _start);
    __cs3_reset = __cs3_reset_PIC32MX;
    *(.cs3.reset)

  } >PIC32MX_flash_userboot

  /*
  ** "Normal" code in user flash
  */
  .text :
  {
    CREATE_OBJECT_SYMBOLS /* create symbols for each input file - why ??? */

    __cs3_region_start_rom = .;
    *(.cs3.region-head.rom)
    ASSERT (. == __cs3_region_start_rom, ".cs3.region-head.rom not permitted");

    /* "normal" code follows... */
    *(.text .text.* .gnu.linkonce.t.*)

    . = ALIGN(0x4);
    KEEP (*crtbegin.o(.jcr))
    KEEP (*(EXCLUDE_FILE (*crtend.o) .jcr))
    KEEP (*crtend.o(.jcr))

    . = ALIGN(0x4);
    *(.gcc_except_table .gcc_except_table.*)
  } >PIC32MX_flash_user

  .eh_frame_hdr : ALIGN (4)
  {
    KEEP (*(.eh_frame_hdr))
    *(.eh_frame_entry .eh_frame_entry.*)
  } >PIC32MX_flash_user

  .eh_frame : ALIGN (4)
  {
    KEEP (*(.eh_frame))
  }  >PIC32MX_flash_user

  /* MDI semihosting uses a pointer in this section.  */
  .sdeosabi : ALIGN (4)
  {
    *(.sdeosabi)
  } >ram

  .rodata : ALIGN (4)
  {
    *(.rodata .rodata.* .gnu.linkonce.r.*)

    . = ALIGN(4);
    KEEP(*(.init))

    . = ALIGN(4);
    __preinit_array_start = .;
    KEEP (*(.preinit_array))
    __preinit_array_end = .;

    . = ALIGN(4);
    __init_array_start = .;
    KEEP (*(SORT(.init_array.*)))
    KEEP (*(.init_array))
    __init_array_end = .;

    . = ALIGN(4);
    KEEP(*(.fini))

    . = ALIGN(4);
    __fini_array_start = .;
    KEEP (*(.fini_array))
    KEEP (*(SORT(.fini_array.*)))
    __fini_array_end = .;

    . = ALIGN(0x4);
    KEEP (*crtbegin.o(.ctors))
    KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors))
    KEEP (*(SORT(.ctors.*)))
    KEEP (*crtend.o(.ctors))

    . = ALIGN(0x4);
    KEEP (*crtbegin.o(.dtors))
    KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
    KEEP (*(SORT(.dtors.*)))
    KEEP (*crtend.o(.dtors))

    *(.lit)

    . = ALIGN(4);
    __cs3_regions = .;
    LONG (0)
    LONG (__cs3_region_init_ram)
    LONG (__cs3_region_start_ram)
    LONG (__cs3_region_init_size_ram)
    LONG (__cs3_region_zero_size_ram)
    __cs3_regions_end = .;

    . = ALIGN (8);
    /* Redundant, removed: . = ALIGN (8); */

    _etext = .; /* first double-word past end of text, and start address for RAM initialization data stored in ROM */
  }  >PIC32MX_flash_user

  __cs3_region_size_rom = LENGTH(PIC32MX_flash_user); /* just total size of flash */

  /*
  ** Initialized data is linked for RAM, but placed in ROM using the AT> directive.
  ** Startup code copies it to RAM during initialization.
  ** WARNING: Must follow _etext !!
  */
  .data : ALIGN (8)
  {
    __cs3_region_start_ram = .;
    *(.got.plt) *(.got)
    *(.shdata)
    *(.data .data.* .gnu.linkonce.d.*)
    . = ALIGN(8);
    /*
    ** GP-relative addressing permits fast access via single instruction addressing,
    ** using a signed 16-bit offset (i.e. -32768 to 32767) from the gp register.
    ** Set GP to the middle of the "small data" area, then link in up to 64k
    ** of "small data"....
    */
    _gp = . + 0x8000; /* beginning of "small data" plus 32k */
    *(.lit8)
    *(.lit4)
    *(.sdata .sdata.* .gnu.linkonce.s.*)

    /* this magic is needed for the device tables of openMRN */
    . = ALIGN (8);
    KEEP(*( SORT (.device.table.*))) ;

    . = ALIGN (8);
    *(.ram)
    _edata = .;
  } >ram  AT>PIC32MX_flash_user

  /* Wrong, length just gives 256k size of flash: USER_FLASH_USED = LENGTH(PIC32MX_flash_user)+SIZEOF(.data); */

  /* DRN: The following is wrong; doesn't mark end of RAM copy...
  /* For diagnostic use only, mark end of initialized-data copy in ROM */
  /* .edata_copy_end :
  /* {
  /*   _edata_copy_end = .;
  /*   LONG(0) /* force LD to output this section (empty sections are discarded) */
  /* } >PIC32MX_flash_user
  */

  /* data written by startup code and NOT to be initialized by CS3 */
  .startup_data :
  {
    *(.reset_data)
  } >ram0

  /* Un-initialized data, zero'd by CS3 C-language initialization module */
  .bss :
  {
    *(.sbss .sbss.* .gnu.linkonce.sb.*)
    *(.scommon)
    *(.shbss)
    *(.bss .bss.* .gnu.linkonce.b.*)
    *(COMMON)
    . = ALIGN (8);
    *(.ram.b)
    _end = .;
    __end = .;
  } >ram

  /* __cs3_region_end_ram is deprecated */
  /*__cs3_region_end_ram = __cs3_region_start_ram + LENGTH(ram);*/
  __cs3_region_size_ram = LENGTH(ram);
  /* WRONG: load address is PHYSICAL, not logical address:  __cs3_region_init_ram = LOADADDR (.data);  WRONG */
  __cs3_region_init_ram = _etext; /* DRN updated this; seems correct... */
  __cs3_region_init_size_ram = _edata - ADDR (.data);
  __cs3_region_zero_size_ram = _end - _edata;

  /* Compute space available for stack+heap... */
  AVAILABLE_RAM_FOR_STACK_PLUS_HEAP = LENGTH(ram)-(SIZEOF(.data)+SIZEOF(.bss));

  /* ============================  Interrupt Branch Vectors  =========================== */
  .gen_exception _ebase_address + 0x180 :
  {
    KEEP(*(.gen_handler))
  }

  .vector_0 _ebase_address + 0x200 :
  {
    KEEP(*(.vector_0))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_0) <= (_vector_spacing << 5), "function at exception vector 0 too large")
  .vector_1 _ebase_address + 0x200 + (_vector_spacing << 5) * 1 :
  {
    KEEP(*(.vector_1))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_1) <= (_vector_spacing << 5), "function at exception vector 1 too large")
  .vector_2 _ebase_address + 0x200 + (_vector_spacing << 5) * 2 :
  {
    KEEP(*(.vector_2))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_2) <= (_vector_spacing << 5), "function at exception vector 2 too large")
  .vector_3 _ebase_address + 0x200 + (_vector_spacing << 5) * 3 :
  {
    KEEP(*(.vector_3))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_3) <= (_vector_spacing << 5), "function at exception vector 3 too large")
  .vector_4 _ebase_address + 0x200 + (_vector_spacing << 5) * 4 :
  {
    KEEP(*(.vector_4))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_4) <= (_vector_spacing << 5), "function at exception vector 4 too large")
  .vector_5 _ebase_address + 0x200 + (_vector_spacing << 5) * 5 :
  {
    KEEP(*(.vector_5))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_5) <= (_vector_spacing << 5), "function at exception vector 5 too large")
  .vector_6 _ebase_address + 0x200 + (_vector_spacing << 5) * 6 :
  {
    KEEP(*(.vector_6))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_6) <= (_vector_spacing << 5), "function at exception vector 6 too large")
  .vector_7 _ebase_address + 0x200 + (_vector_spacing << 5) * 7 :
  {
    KEEP(*(.vector_7))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_7) <= (_vector_spacing << 5), "function at exception vector 7 too large")
  .vector_8 _ebase_address + 0x200 + (_vector_spacing << 5) * 8 :
  {
    KEEP(*(.vector_8))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_8) <= (_vector_spacing << 5), "function at exception vector 8 too large")
  .vector_9 _ebase_address + 0x200 + (_vector_spacing << 5) * 9 :
  {
    KEEP(*(.vector_9))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_9) <= (_vector_spacing << 5), "function at exception vector 9 too large")
  .vector_10 _ebase_address + 0x200 + (_vector_spacing << 5) * 10 :
  {
    KEEP(*(.vector_10))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_10) <= (_vector_spacing << 5), "function at exception vector 10 too large")
  .vector_11 _ebase_address + 0x200 + (_vector_spacing << 5) * 11 :
  {
    KEEP(*(.vector_11))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_11) <= (_vector_spacing << 5), "function at exception vector 11 too large")
  .vector_12 _ebase_address + 0x200 + (_vector_spacing << 5) * 12 :
  {
    KEEP(*(.vector_12))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_12) <= (_vector_spacing << 5), "function at exception vector 12 too large")
  .vector_13 _ebase_address + 0x200 + (_vector_spacing << 5) * 13 :
  {
    KEEP(*(.vector_13))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_13) <= (_vector_spacing << 5), "function at exception vector 13 too large")
  .vector_14 _ebase_address + 0x200 + (_vector_spacing << 5) * 14 :
  {
    KEEP(*(.vector_14))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_14) <= (_vector_spacing << 5), "function at exception vector 14 too large")
  .vector_15 _ebase_address + 0x200 + (_vector_spacing << 5) * 15 :
  {
    KEEP(*(.vector_15))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_15) <= (_vector_spacing << 5), "function at exception vector 15 too large")
  .vector_16 _ebase_address + 0x200 + (_vector_spacing << 5) * 16 :
  {
    KEEP(*(.vector_16))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_16) <= (_vector_spacing << 5), "function at exception vector 16 too large")
  .vector_17 _ebase_address + 0x200 + (_vector_spacing << 5) * 17 :
  {
    KEEP(*(.vector_17))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_17) <= (_vector_spacing << 5), "function at exception vector 17 too large")
  .vector_18 _ebase_address + 0x200 + (_vector_spacing << 5) * 18 :
  {
    KEEP(*(.vector_18))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_18) <= (_vector_spacing << 5), "function at exception vector 18 too large")
  .vector_19 _ebase_address + 0x200 + (_vector_spacing << 5) * 19 :
  {
    KEEP(*(.vector_19))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_19) <= (_vector_spacing << 5), "function at exception vector 19 too large")
  .vector_20 _ebase_address + 0x200 + (_vector_spacing << 5) * 20 :
  {
    KEEP(*(.vector_20))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_20) <= (_vector_spacing << 5), "function at exception vector 20 too large")
  .vector_21 _ebase_address + 0x200 + (_vector_spacing << 5) * 21 :
  {
    KEEP(*(.vector_21))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_21) <= (_vector_spacing << 5), "function at exception vector 21 too large")
  .vector_22 _ebase_address + 0x200 + (_vector_spacing << 5) * 22 :
  {
    KEEP(*(.vector_22))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_22) <= (_vector_spacing << 5), "function at exception vector 22 too large")
  .vector_23 _ebase_address + 0x200 + (_vector_spacing << 5) * 23 :
  {
    KEEP(*(.vector_23))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_23) <= (_vector_spacing << 5), "function at exception vector 23 too large")
  .vector_24 _ebase_address + 0x200 + (_vector_spacing << 5) * 24 :
  {
    KEEP(*(.vector_24))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_24) <= (_vector_spacing << 5), "function at exception vector 24 too large")
  .vector_25 _ebase_address + 0x200 + (_vector_spacing << 5) * 25 :
  {
    KEEP(*(.vector_25))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_25) <= (_vector_spacing << 5), "function at exception vector 25 too large")
  .vector_26 _ebase_address + 0x200 + (_vector_spacing << 5) * 26 :
  {
    KEEP(*(.vector_26))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_26) <= (_vector_spacing << 5), "function at exception vector 26 too large")
  .vector_27 _ebase_address + 0x200 + (_vector_spacing << 5) * 27 :
  {
    KEEP(*(.vector_27))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_27) <= (_vector_spacing << 5), "function at exception vector 27 too large")
  .vector_28 _ebase_address + 0x200 + (_vector_spacing << 5) * 28 :
  {
    KEEP(*(.vector_28))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_28) <= (_vector_spacing << 5), "function at exception vector 28 too large")
  .vector_29 _ebase_address + 0x200 + (_vector_spacing << 5) * 29 :
  {
    KEEP(*(.vector_29))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_29) <= (_vector_spacing << 5), "function at exception vector 29 too large")
  .vector_30 _ebase_address + 0x200 + (_vector_spacing << 5) * 30 :
  {
    KEEP(*(.vector_30))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_30) <= (_vector_spacing << 5), "function at exception vector 30 too large")
  .vector_31 _ebase_address + 0x200 + (_vector_spacing << 5) * 31 :
  {
    KEEP(*(.vector_31))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_31) <= (_vector_spacing << 5), "function at exception vector 31 too large")
  .vector_32 _ebase_address + 0x200 + (_vector_spacing << 5) * 32 :
  {
    KEEP(*(.vector_32))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_32) <= (_vector_spacing << 5), "function at exception vector 32 too large")
  .vector_33 _ebase_address + 0x200 + (_vector_spacing << 5) * 33 :
  {
    KEEP(*(.vector_33))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_33) <= (_vector_spacing << 5), "function at exception vector 33 too large")
  .vector_34 _ebase_address + 0x200 + (_vector_spacing << 5) * 34 :
  {
    KEEP(*(.vector_34))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_34) <= (_vector_spacing << 5), "function at exception vector 34 too large")
  .vector_35 _ebase_address + 0x200 + (_vector_spacing << 5) * 35 :
  {
    KEEP(*(.vector_35))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_35) <= (_vector_spacing << 5), "function at exception vector 35 too large")
  .vector_36 _ebase_address + 0x200 + (_vector_spacing << 5) * 36 :
  {
    KEEP(*(.vector_36))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_36) <= (_vector_spacing << 5), "function at exception vector 36 too large")
  .vector_37 _ebase_address + 0x200 + (_vector_spacing << 5) * 37 :
  {
    KEEP(*(.vector_37))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_37) <= (_vector_spacing << 5), "function at exception vector 37 too large")
  .vector_38 _ebase_address + 0x200 + (_vector_spacing << 5) * 38 :
  {
    KEEP(*(.vector_38))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_38) <= (_vector_spacing << 5), "function at exception vector 38 too large")
  .vector_39 _ebase_address + 0x200 + (_vector_spacing << 5) * 39 :
  {
    KEEP(*(.vector_39))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_39) <= (_vector_spacing << 5), "function at exception vector 39 too large")
  .vector_40 _ebase_address + 0x200 + (_vector_spacing << 5) * 40 :
  {
    KEEP(*(.vector_40))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_40) <= (_vector_spacing << 5), "function at exception vector 40 too large")
  .vector_41 _ebase_address + 0x200 + (_vector_spacing << 5) * 41 :
  {
    KEEP(*(.vector_41))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_41) <= (_vector_spacing << 5), "function at exception vector 41 too large")
  .vector_42 _ebase_address + 0x200 + (_vector_spacing << 5) * 42 :
  {
    KEEP(*(.vector_42))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_42) <= (_vector_spacing << 5), "function at exception vector 42 too large")
  .vector_43 _ebase_address + 0x200 + (_vector_spacing << 5) * 43 :
  {
    KEEP(*(.vector_43))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_43) <= (_vector_spacing << 5), "function at exception vector 43 too large")
  .vector_44 _ebase_address + 0x200 + (_vector_spacing << 5) * 44 :
  {
    KEEP(*(.vector_44))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_44) <= (_vector_spacing << 5), "function at exception vector 44 too large")
  .vector_45 _ebase_address + 0x200 + (_vector_spacing << 5) * 45 :
  {
    KEEP(*(.vector_45))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_45) <= (_vector_spacing << 5), "function at exception vector 45 too large")
  .vector_46 _ebase_address + 0x200 + (_vector_spacing << 5) * 46 :
  {
    KEEP(*(.vector_46))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_46) <= (_vector_spacing << 5), "function at exception vector 46 too large")
  .vector_47 _ebase_address + 0x200 + (_vector_spacing << 5) * 47 :
  {
    KEEP(*(.vector_47))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_47) <= (_vector_spacing << 5), "function at exception vector 47 too large")
  .vector_48 _ebase_address + 0x200 + (_vector_spacing << 5) * 48 :
  {
    KEEP(*(.vector_48))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_48) <= (_vector_spacing << 5), "function at exception vector 48 too large")
  .vector_49 _ebase_address + 0x200 + (_vector_spacing << 5) * 49 :
  {
    KEEP(*(.vector_49))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_49) <= (_vector_spacing << 5), "function at exception vector 49 too large")
  .vector_50 _ebase_address + 0x200 + (_vector_spacing << 5) * 50 :
  {
    KEEP(*(.vector_50))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_50) <= (_vector_spacing << 5), "function at exception vector 50 too large")
  .vector_51 _ebase_address + 0x200 + (_vector_spacing << 5) * 51 :
  {
    KEEP(*(.vector_51))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_51) <= (_vector_spacing << 5), "function at exception vector 51 too large")
  .vector_52 _ebase_address + 0x200 + (_vector_spacing << 5) * 52 :
  {
    KEEP(*(.vector_52))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_52) <= (_vector_spacing << 5), "function at exception vector 52 too large")
  .vector_53 _ebase_address + 0x200 + (_vector_spacing << 5) * 53 :
  {
    KEEP(*(.vector_53))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_53) <= (_vector_spacing << 5), "function at exception vector 53 too large")
  .vector_54 _ebase_address + 0x200 + (_vector_spacing << 5) * 54 :
  {
    KEEP(*(.vector_54))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_54) <= (_vector_spacing << 5), "function at exception vector 54 too large")
  .vector_55 _ebase_address + 0x200 + (_vector_spacing << 5) * 55 :
  {
    KEEP(*(.vector_55))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_55) <= (_vector_spacing << 5), "function at exception vector 55 too large")
  .vector_56 _ebase_address + 0x200 + (_vector_spacing << 5) * 56 :
  {
    KEEP(*(.vector_56))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_56) <= (_vector_spacing << 5), "function at exception vector 56 too large")
  .vector_57 _ebase_address + 0x200 + (_vector_spacing << 5) * 57 :
  {
    KEEP(*(.vector_57))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_57) <= (_vector_spacing << 5), "function at exception vector 57 too large")
  .vector_58 _ebase_address + 0x200 + (_vector_spacing << 5) * 58 :
  {
    KEEP(*(.vector_58))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_58) <= (_vector_spacing << 5), "function at exception vector 58 too large")
  .vector_59 _ebase_address + 0x200 + (_vector_spacing << 5) * 59 :
  {
    KEEP(*(.vector_59))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_59) <= (_vector_spacing << 5), "function at exception vector 59 too large")
  .vector_60 _ebase_address + 0x200 + (_vector_spacing << 5) * 60 :
  {
    KEEP(*(.vector_60))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_60) <= (_vector_spacing << 5), "function at exception vector 60 too large")
  .vector_61 _ebase_address + 0x200 + (_vector_spacing << 5) * 61 :
  {
    KEEP(*(.vector_61))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_61) <= (_vector_spacing << 5), "function at exception vector 61 too large")
  .vector_62 _ebase_address + 0x200 + (_vector_spacing << 5) * 62 :
  {
    KEEP(*(.vector_62))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_62) <= (_vector_spacing << 5), "function at exception vector 62 too large")
  .vector_63 _ebase_address + 0x200 + (_vector_spacing << 5) * 63 :
  {
    KEEP(*(.vector_63))
  }
  ASSERT (_vector_spacing == 0 || SIZEOF(.vector_63) <= (_vector_spacing << 5), "function at exception vector 63 too large")
  /* ============================  End Interrupt Branch Vectors  =========================== */

  .stab 0 (NOLOAD) : { *(.stab) }
  .stabstr 0 (NOLOAD) : { *(.stabstr) }
  /* DWARF debug sections.
   * Symbols in the DWARF debugging sections are relative to the beginning
   * of the section so we begin them at 0.  */
  /* DWARF 1 */
  .debug          0 : { *(.debug) }
  .line           0 : { *(.line) }
  /* GNU DWARF 1 extensions */
  .debug_srcinfo  0 : { *(.debug_srcinfo) }
  .debug_sfnames  0 : { *(.debug_sfnames) }
  /* DWARF 1.1 and DWARF 2 */
  .debug_aranges  0 : { *(.debug_aranges) }
  .debug_pubnames 0 : { *(.debug_pubnames) }
  /* DWARF 2 */
  .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
  .debug_abbrev   0 : { *(.debug_abbrev) }
  .debug_line     0 : { *(.debug_line) }
  .debug_frame    0 : { *(.debug_frame) }
  .debug_str      0 : { *(.debug_str) }
  .debug_loc      0 : { *(.debug_loc) }
  .debug_macinfo  0 : { *(.debug_macinfo) }
  /* SGI/MIPS DWARF 2 extensions */
  .debug_weaknames 0 : { *(.debug_weaknames) }
  .debug_funcnames 0 : { *(.debug_funcnames) }
  .debug_typenames 0 : { *(.debug_typenames) }
  .debug_varnames  0 : { *(.debug_varnames) }
}


Moved userland later in memory as if we load it at 0x10000 right now, it'll overwrite the kernel (oops?) TODO: relocate :(

/* The bootloader will look at this image and start execution at the symbol
   designated as the entry point. */
ENTRY(_start)

/* Tell where the various sections of the object files will be put in the final
   kernel image. */
SECTIONS
{
	/* Begin putting sections at 1 MiB, a conventional place for kernels to be
	   loaded at by the bootloader. */
	. = 0x20000;

    LD_KERNEL_START = .;

    /* Kernel code */
	.text :
	{
        *(.text.start)
		*(.text)
	}

	/* Read-only data. */
	.rodata ALIGN(4):
	{
		*(.rodata)
	}

	/* Read-write data (initialized) */
	.data ALIGN(4):
	{
		*(.data)
	}

    LD_KERNEL_DATA_END = .;

	/* Read-write data (uninitialized) and stack */
	.bss ALIGN(4):
	{
		*(COMMON)
		*(.bss)
		*(.bootstrap_stack)
	}

    LD_KERNEL_END = .;

	/* The compiler may produce other sections, by default it will put them in
	   a segment with the same name. Simply add stuff here as needed. */
}

/* The bootloader will look at this image and start execution at the symbol
   designated as the entry point. */
ENTRY(_start)

/* Tell where the various sections of the object files will be put in the final
   kernel image. */
SECTIONS
{
	/* Begin putting sections at 1 MiB, a conventional place for kernels to be
	   loaded at by the bootloader. */
	. = 0x10000;

    LD_KERNEL_START = .;

    /* Kernel code */
	.text :
	{
        *(.text.start)
		*(.text)
	}

	/* Read-only data. */
	.rodata ALIGN(4):
	{
		*(.rodata)
	}

	/* Read-write data (initialized) */
	.data ALIGN(4):
	{
		*(.data)
	}

    LD_KERNEL_DATA_END = .;

	/* Read-write data (uninitialized) and stack */
	.bss ALIGN(4):
	{
		*(COMMON)
		*(.bss)
		*(.bootstrap_stack)
	}

    LD_KERNEL_END = .;

	/* The compiler may produce other sections, by default it will put them in
	   a segment with the same name. Simply add stuff here as needed. */
}


Alignment fix for global symbols fixes #97

MEMORY
{
    FLASH (rx)      : ORIGIN = 0x00100000, LENGTH = 0x400000 /* entire flash, 4 MiB */
    RAM (xrw)       : ORIGIN = 0x00000000, LENGTH = 0x000400 /* 1 KB */
}

SECTIONS {
    /* The program code and other data goes into FLASH */
    .text :
    {
        . = ALIGN(4);
        *(.text)           /* .text sections (code) */
        *(.text*)          /* .text* sections (code) */
        *(.rodata)         /* .rodata sections (constants, strings, etc.) */
        *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
        *(.srodata)        /* .rodata sections (constants, strings, etc.) */
        *(.srodata*)       /* .rodata* sections (constants, strings, etc.) */
        . = ALIGN(4);
        _etext = .;        /* define a global symbol at end of code */
        _sidata = _etext;  /* This is used by the startup in order to initialize the .data secion */
    } >FLASH

    /* This is the initialized data section
    The program executes knowing that the data is in the RAM
    but the loader puts the initial values in the FLASH (inidata).
    It is one task of the startup to copy the initial values from FLASH to RAM. */
    .data : AT ( _sidata )
    {
        . = ALIGN(4);
        _sdata = .;        /* create a global symbol at data start; used by startup code in order to initialise the .data section in RAM */
        _ram_start = .;    /* create a global symbol at ram start for garbage collector */
        . = ALIGN(4);
        *(.data)           /* .data sections */
        *(.data*)          /* .data* sections */
        *(.sdata)           /* .sdata sections */
        *(.sdata*)          /* .sdata* sections */
        . = ALIGN(4);
        _edata = .;        /* define a global symbol at data end; used by startup code in order to initialise the .data section in RAM */
    } >RAM

    /* Uninitialized data section */
    .bss :
    {
        . = ALIGN(4);
        _sbss = .;         /* define a global symbol at bss start; used by startup code */
        *(.bss)
        *(.bss*)
        *(.sbss)
        *(.sbss*)
        *(COMMON)

        . = ALIGN(4);
        _ebss = .;         /* define a global symbol at bss end; used by startup code */
    } >RAM

    /* this is to define the start of the heap, and make sure we have a minimum size */
    .heap :
    {
        . = ALIGN(4);
        _heap_start = .;    /* define a global symbol at heap start */
    } >RAM
}

MEMORY
{
    FLASH (rx)      : ORIGIN = 0x00100000, LENGTH = 0x400000 /* entire flash, 4 MiB */
    RAM (xrw)       : ORIGIN = 0x00000000, LENGTH = 0x000400 /* 1 KB */
}

SECTIONS {
    /* The program code and other data goes into FLASH */
    .text :
    {
        . = ALIGN(4);
        *(.text)           /* .text sections (code) */
        *(.text*)          /* .text* sections (code) */
        *(.rodata)         /* .rodata sections (constants, strings, etc.) */
        *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
        *(.srodata)        /* .rodata sections (constants, strings, etc.) */
        *(.srodata*)       /* .rodata* sections (constants, strings, etc.) */
        _etext = .;        /* define a global symbol at end of code */
        _sidata = _etext;  /* This is used by the startup in order to initialize the .data secion */
    } >FLASH

    /* This is the initialized data section
    The program executes knowing that the data is in the RAM
    but the loader puts the initial values in the FLASH (inidata).
    It is one task of the startup to copy the initial values from FLASH to RAM. */
    .data : AT ( _sidata )
    {
        . = ALIGN(4);
        _sdata = .;        /* create a global symbol at data start; used by startup code in order to initialise the .data section in RAM */
        _ram_start = .;    /* create a global symbol at ram start for garbage collector */
        . = ALIGN(4);
        *(.data)           /* .data sections */
        *(.data*)          /* .data* sections */
        *(.sdata)           /* .sdata sections */
        *(.sdata*)          /* .sdata* sections */
        . = ALIGN(4);
        _edata = .;        /* define a global symbol at data end; used by startup code in order to initialise the .data section in RAM */
    } >RAM

    /* Uninitialized data section */
    .bss :
    {
        . = ALIGN(4);
        _sbss = .;         /* define a global symbol at bss start; used by startup code */
        *(.bss)
        *(.bss*)
        *(.sbss)
        *(.sbss*)
        *(COMMON)

        . = ALIGN(4);
        _ebss = .;         /* define a global symbol at bss end; used by startup code */
    } >RAM

    /* this is to define the start of the heap, and make sure we have a minimum size */
    .heap :
    {
        . = ALIGN(4);
        _heap_start = .;    /* define a global symbol at heap start */
    } >RAM
}


[arm] force 4 byte alignment of data segments in the linkscript

OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
OUTPUT_ARCH(arm)

ENTRY(_start)
SECTIONS
{
	. = %MEMBASE%;

	.interp : { *(.interp) }
	.hash : { *(.hash) }
	.dynsym : { *(.dynsym) }
	.dynstr : { *(.dynstr) }
	.rel.text : { *(.rel.text) *(.rel.gnu.linkonce.t*) }
	.rela.text : { *(.rela.text) *(.rela.gnu.linkonce.t*) }
	.rel.data : { *(.rel.data) *(.rel.gnu.linkonce.d*) }
	.rela.data : { *(.rela.data) *(.rela.gnu.linkonce.d*) }
	.rel.rodata : { *(.rel.rodata) *(.rel.gnu.linkonce.r*) }
	.rela.rodata : { *(.rela.rodata) *(.rela.gnu.linkonce.r*) }
	.rel.got : { *(.rel.got) }
	.rela.got : { *(.rela.got) }
	.rel.ctors : { *(.rel.ctors) }
	.rela.ctors : { *(.rela.ctors) }
	.rel.dtors : { *(.rel.dtors) }
	.rela.dtors : { *(.rela.dtors) }
	.rel.init : { *(.rel.init) }
	.rela.init : { *(.rela.init) }
	.rel.fini : { *(.rel.fini) }
	.rela.fini : { *(.rela.fini) }
	.rel.bss : { *(.rel.bss) }
	.rela.bss : { *(.rela.bss) }
	.rel.plt : { *(.rel.plt) }
	.rela.plt : { *(.rela.plt) }
	.init : { *(.init) } =0x9090
	.plt : { *(.plt) }

	/* text/read-only data */
	.text :	{ *(.text .text.* .glue_7* .gnu.linkonce.t.*) } =0x9090

	.rodata : {
		*(.rodata .rodata.* .gnu.linkonce.r.*)
		. = ALIGN(4);
		__commands_start = .;
		KEEP (*(.commands))
		__commands_end = .;
		. = ALIGN(4);
		__rodata_end = . ;
	}

	/* writable data  */
	__data_start_rom = .;	/* in one segment binaries, the rom data address is on top of the ram data address */
	__data_start = .;
	.data : SUBALIGN(4) { *(.data .data.* .gnu.linkonce.d.*) }

	__ctor_list = .;
	.ctors : { *(.ctors) }
	__ctor_end = .;
	__dtor_list = .;
	.dtors : { *(.dtors) }
	__dtor_end = .;
	.got : { *(.got.plt) *(.got) }
	.dynamic : { *(.dynamic) }

	__data_end = .;

	/* unintialized data (in same segment as writable data) */
	. = ALIGN(4);
	__bss_start = .;
	.bss : { *(.bss .bss.*) }

	. = ALIGN(4);
	_end = .;

	. = %MEMBASE% + %MEMSIZE%;
	_end_of_ram = .;

	/* Strip unnecessary stuff */
	/DISCARD/ : { *(.comment .note .eh_frame) }
}

OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
OUTPUT_ARCH(arm)

ENTRY(_start)
SECTIONS
{
	. = %MEMBASE%;

	.interp : { *(.interp) }
	.hash : { *(.hash) }
	.dynsym : { *(.dynsym) }
	.dynstr : { *(.dynstr) }
	.rel.text : { *(.rel.text) *(.rel.gnu.linkonce.t*) }
	.rela.text : { *(.rela.text) *(.rela.gnu.linkonce.t*) }
	.rel.data : { *(.rel.data) *(.rel.gnu.linkonce.d*) }
	.rela.data : { *(.rela.data) *(.rela.gnu.linkonce.d*) }
	.rel.rodata : { *(.rel.rodata) *(.rel.gnu.linkonce.r*) }
	.rela.rodata : { *(.rela.rodata) *(.rela.gnu.linkonce.r*) }
	.rel.got : { *(.rel.got) }
	.rela.got : { *(.rela.got) }
	.rel.ctors : { *(.rel.ctors) }
	.rela.ctors : { *(.rela.ctors) }
	.rel.dtors : { *(.rel.dtors) }
	.rela.dtors : { *(.rela.dtors) }
	.rel.init : { *(.rel.init) }
	.rela.init : { *(.rela.init) }
	.rel.fini : { *(.rel.fini) }
	.rela.fini : { *(.rela.fini) }
	.rel.bss : { *(.rel.bss) }
	.rela.bss : { *(.rela.bss) }
	.rel.plt : { *(.rel.plt) }
	.rela.plt : { *(.rela.plt) }
	.init : { *(.init) } =0x9090
	.plt : { *(.plt) }

	/* text/read-only data */
	.text :	{ *(.text .text.* .glue_7* .gnu.linkonce.t.*) } =0x9090

	.rodata : {
		*(.rodata .rodata.* .gnu.linkonce.r.*)
		. = ALIGN(4);
		__commands_start = .;
		KEEP (*(.commands))
		__commands_end = .;
		. = ALIGN(4);
		__rodata_end = . ;
	}

	/* writable data  */
	__data_start_rom = .;	/* in one segment binaries, the rom data address is on top of the ram data address */
	__data_start = .;
	.data : { *(.data .data.* .gnu.linkonce.d.*) }

	__ctor_list = .;
	.ctors : { *(.ctors) }
	__ctor_end = .;
	__dtor_list = .;
	.dtors : { *(.dtors) }
	__dtor_end = .;
	.got : { *(.got.plt) *(.got) }
	.dynamic : { *(.dynamic) }

	__data_end = .;

	/* unintialized data (in same segment as writable data) */
	. = ALIGN(4);
	__bss_start = .;
	.bss : { *(.bss .bss.*) }

	. = ALIGN(4);
	_end = .;

	. = %MEMBASE% + %MEMSIZE%;
	_end_of_ram = .;

	/* Strip unnecessary stuff */
	/DISCARD/ : { *(.comment .note .eh_frame) }
}


feat(ld): Export low level function address

In rom, these functions are wrapped, modify to use these functions directly.

internal: 45cbd694

PROVIDE ( SPI_sector_erase = 0x400040c0 );
PROVIDE ( SPI_page_program = 0x40004174 );
PROVIDE ( SPI_read_data = 0x400042ac );
PROVIDE ( SPI_read_status = 0x400043c8 );
PROVIDE ( SPI_write_status = 0x40004400 );
PROVIDE ( SPI_write_enable = 0x4000443c );
PROVIDE ( Wait_SPI_Idle = 0x4000448c );
PROVIDE ( Enable_QMode = 0x400044c0 );
PROVIDE ( Disable_QMode = 0x40004508 );

PROVIDE ( Cache_Read_Enable = 0x40004678 );
PROVIDE ( Cache_Read_Disable = 0x400047f0 );

PROVIDE ( lldesc_build_chain = 0x40004f40 );
PROVIDE ( lldesc_num2link = 0x40005050 );
PROVIDE ( lldesc_set_owner = 0x4000507c );

PROVIDE ( __adddf3 = 0x4000c538 );
PROVIDE ( __addsf3 = 0x4000c180 );
PROVIDE ( __divdf3 = 0x4000cb94 );
PROVIDE ( __divdi3 = 0x4000ce60 );
PROVIDE ( __divsi3 = 0x4000dc88 );
PROVIDE ( __extendsfdf2 = 0x4000cdfc );
PROVIDE ( __fixdfsi = 0x4000ccb8 );
PROVIDE ( __fixunsdfsi = 0x4000cd00 );
PROVIDE ( __fixunssfsi = 0x4000c4c4 );
PROVIDE ( __floatsidf = 0x4000e2f0 );
PROVIDE ( __floatsisf = 0x4000e2ac );
PROVIDE ( __floatunsidf = 0x4000e2e8 );
PROVIDE ( __floatunsisf = 0x4000e2a4 );
PROVIDE ( __muldf3 = 0x4000c8f0 );
PROVIDE ( __muldi3 = 0x40000650 );
PROVIDE ( __mulsf3 = 0x4000c3dc );
PROVIDE ( __subdf3 = 0x4000c688 );
PROVIDE ( __subsf3 = 0x4000c268 );
PROVIDE ( __truncdfsf2 = 0x4000cd5c );
PROVIDE ( __udivdi3 = 0x4000d310 );
PROVIDE ( __udivsi3 = 0x4000e21c );
PROVIDE ( __umoddi3 = 0x4000d770 );
PROVIDE ( __umodsi3 = 0x4000e268 );
PROVIDE ( __umulsidi3 = 0x4000dcf0 );

PROVIDE ( bzero = 0x4000de84 );
PROVIDE ( memcmp = 0x4000dea8 );
PROVIDE ( memcpy = 0x4000df48 );
PROVIDE ( memmove = 0x4000e04c );
PROVIDE ( memset = 0x4000e190 );

PROVIDE ( strcmp = 0x4000bdc8 );
PROVIDE ( strcpy = 0x4000bec8 );
PROVIDE ( strlen = 0x4000bf4c );
PROVIDE ( strncmp = 0x4000bfa8 );
PROVIDE ( strncpy = 0x4000c0a0 );
PROVIDE ( strstr = 0x4000e1e0 );

PROVIDE ( gpio_input_get = 0x40004cf0 );
PROVIDE ( gpio_pin_wakeup_disable = 0x40004ed4 );
PROVIDE ( gpio_pin_wakeup_enable = 0x40004e90 );

PROVIDE ( SPI_sector_erase = 0x400040c0 );
PROVIDE ( SPI_page_program = 0x40004174 );
PROVIDE ( SPI_read_data = 0x400042ac );
PROVIDE ( SPI_read_status = 0x400043c8 );
PROVIDE ( SPI_write_status = 0x40004400 );
PROVIDE ( SPI_write_enable = 0x4000443c );
PROVIDE ( Wait_SPI_Idle = 0x4000448c );
PROVIDE ( Enable_QMode = 0x400044c0 );
PROVIDE ( Disable_QMode = 0x40004508 );

PROVIDE ( Cache_Read_Enable = 0x40004678 );
PROVIDE ( Cache_Read_Disable = 0x400047f0 );

PROVIDE ( lldesc_build_chain = 0x40004f40 );
PROVIDE ( lldesc_num2link = 0x40005050 );
PROVIDE ( lldesc_set_owner = 0x4000507c );

PROVIDE ( __adddf3 = 0x4000c538 );
PROVIDE ( __addsf3 = 0x4000c180 );
PROVIDE ( __divdf3 = 0x4000cb94 );
PROVIDE ( __divdi3 = 0x4000ce60 );
PROVIDE ( __divsi3 = 0x4000dc88 );
PROVIDE ( __extendsfdf2 = 0x4000cdfc );
PROVIDE ( __fixdfsi = 0x4000ccb8 );
PROVIDE ( __fixunsdfsi = 0x4000cd00 );
PROVIDE ( __fixunssfsi = 0x4000c4c4 );
PROVIDE ( __floatsidf = 0x4000e2f0 );
PROVIDE ( __floatsisf = 0x4000e2ac );
PROVIDE ( __floatunsidf = 0x4000e2e8 );
PROVIDE ( __floatunsisf = 0x4000e2a4 );
PROVIDE ( __muldf3 = 0x4000c8f0 );
PROVIDE ( __muldi3 = 0x40000650 );
PROVIDE ( __mulsf3 = 0x4000c3dc );
PROVIDE ( __subdf3 = 0x4000c688 );
PROVIDE ( __subsf3 = 0x4000c268 );
PROVIDE ( __truncdfsf2 = 0x4000cd5c );
PROVIDE ( __udivdi3 = 0x4000d310 );
PROVIDE ( __udivsi3 = 0x4000e21c );
PROVIDE ( __umoddi3 = 0x4000d770 );
PROVIDE ( __umodsi3 = 0x4000e268 );
PROVIDE ( __umulsidi3 = 0x4000dcf0 );

PROVIDE ( bzero = 0x40002ae8 );
PROVIDE ( memcmp = 0x400018d4 );
PROVIDE ( memcpy = 0x400018b4 );
PROVIDE ( memmove = 0x400018c4 );
PROVIDE ( memset = 0x400018a4 );

PROVIDE ( strcmp = 0x40002aa8 );
PROVIDE ( strcpy = 0x40002a88 );
PROVIDE ( strlen = 0x40002ac8 );
PROVIDE ( strncmp = 0x40002ab8 );
PROVIDE ( strncpy = 0x40002a98 );
PROVIDE ( strstr = 0x40002ad8 );

PROVIDE ( gpio_input_get = 0x40004cf0 );
PROVIDE ( gpio_pin_wakeup_disable = 0x40004ed4 );
PROVIDE ( gpio_pin_wakeup_enable = 0x40004e90 );


nrf5/boards: decrease size of ISR region from 4k to 1k in custom feather52 linker script to get some more flash space.

/*
    GNU linker script for NRF52 w/ s132 2.0.1 SoftDevice
*/

/* Specify the memory areas */
MEMORY
{
    FLASH (rx)      : ORIGIN = 0x00000000, LENGTH = 0x080000 /* entire flash, 512 KiB */
    FLASH_ISR (rx)  : ORIGIN = 0x0001c000, LENGTH = 0x001000 /* sector 0, 4 KiB */
    FLASH_TEXT (rx) : ORIGIN = 0x0001c400, LENGTH = 0x026c00 /* 152 KiB - APP - ISR */
    RAM (xrw)       : ORIGIN = 0x200039c0, LENGTH = 0x0c640  /* 49.5 KiB, give 8KiB headroom for softdevice */
}

/* produce a link error if there is not this amount of RAM for these sections */
_minimum_stack_size = 2K;
_minimum_heap_size = 16K;

/* top end of the stack */

/*_stack_end = ORIGIN(RAM) + LENGTH(RAM);*/
_estack = ORIGIN(RAM) + LENGTH(RAM);

/* RAM extents for the garbage collector */
_ram_end = ORIGIN(RAM) + LENGTH(RAM);
_heap_end = 0x20007000; /* tunable */

INCLUDE "boards/common.ld"

/*
    GNU linker script for NRF52 w/ s132 2.0.1 SoftDevice
*/

/* Specify the memory areas */
MEMORY
{
    FLASH (rx)      : ORIGIN = 0x00000000, LENGTH = 0x080000 /* entire flash, 512 KiB */
    FLASH_ISR (rx)  : ORIGIN = 0x0001c000, LENGTH = 0x001000 /* sector 0, 4 KiB */
    FLASH_TEXT (rx) : ORIGIN = 0x0001d000, LENGTH = 0x026000 /* 152 KiB - APP - ISR */
    RAM (xrw)       : ORIGIN = 0x200039c0, LENGTH = 0x0c640  /* 49.5 KiB, give 8KiB headroom for softdevice */
}

/* produce a link error if there is not this amount of RAM for these sections */
_minimum_stack_size = 2K;
_minimum_heap_size = 16K;

/* top end of the stack */

/*_stack_end = ORIGIN(RAM) + LENGTH(RAM);*/
_estack = ORIGIN(RAM) + LENGTH(RAM);

/* RAM extents for the garbage collector */
_ram_end = ORIGIN(RAM) + LENGTH(RAM);
_heap_end = 0x20007000; /* tunable */

INCLUDE "boards/common.ld"


riscv32: linker: Link .srodata section

riscv32: linker: Link .srodata section

Building tests/kernel/common/kernel.common with the new crosstools
SDK-ng resulted in an orphan short read-only data section. Fix this by
adding the .srodata section to the RISC-V linker script.

Signed-off-by: Nathaniel Graff <e7e2d91f1deb937cded6d6fc8e8292f24ce08299@sifive.com>

/*
 * Copyright (c) 2016-2017 Jean-Paul Etienne <fractalclone@gmail.com>
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/**
 * @file
 * @brief Linker command/script file
 *
 * Generic Linker script for the riscv32 platform
 */

#define _LINKER
#define _ASMLANGUAGE

#include <soc.h>

#include <autoconf.h>
#include <linker/sections.h>

#include <linker/linker-defs.h>
#include <linker/linker-tool.h>

#ifdef CONFIG_XIP
#define ROMABLE_REGION              ROM
#else
#define ROMABLE_REGION              RAM
#endif
#define RAMABLE_REGION              RAM

#define _VECTOR_SECTION_NAME        vector
#define _EXCEPTION_SECTION_NAME     exceptions
#define _RESET_SECTION_NAME         reset

MEMORY
{
#ifdef CONFIG_XIP
    ROM (rx)  : ORIGIN = CONFIG_RISCV_ROM_BASE_ADDR, LENGTH = CONFIG_RISCV_ROM_SIZE
#endif
    RAM (rwx) : ORIGIN = CONFIG_RISCV_RAM_BASE_ADDR, LENGTH = RISCV_RAM_SIZE
    /* Used by and documented in include/linker/intlist.ld */
    IDT_LIST  (wx)      : ORIGIN = 0xFFFFF7FF, LENGTH = 2K
}

ENTRY(CONFIG_KERNEL_ENTRY)

SECTIONS
    {

#include <linker/rel-sections.ld>

    /*
     * The .plt and .iplt are here according to
     * 'riscv32-zephyr-elf-ld --verbose', before text section.
     */
    SECTION_PROLOGUE(.plt,,)
	{
		*(.plt)
	}

    SECTION_PROLOGUE(.iplt,,)
	{
		*(.iplt)
	}

    GROUP_START(ROMABLE_REGION)
    _image_rom_start = .;

    SECTION_PROLOGUE(_VECTOR_SECTION_NAME,,)
    {
		. = ALIGN(4);
		KEEP(*(.vectors.*))
    } GROUP_LINK_IN(ROMABLE_REGION)

    SECTION_PROLOGUE(_RESET_SECTION_NAME,,)
    {
		KEEP(*(.reset.*))
    } GROUP_LINK_IN(ROMABLE_REGION)

    SECTION_PROLOGUE(_EXCEPTION_SECTION_NAME,,)
    {
		 KEEP(*(".exception.entry.*"))
		 *(".exception.other.*")
    } GROUP_LINK_IN(ROMABLE_REGION)

    SECTION_PROLOGUE(_TEXT_SECTION_NAME,,)
	{
		. = ALIGN(4);
		KEEP(*(.openocd_debug))
		KEEP(*(".openocd_debug.*"))

		_image_text_start = .;
		*(.text)
		*(".text.*")
		*(.gnu.linkonce.t.*)
		*(.eh_frame)
	} GROUP_LINK_IN(ROMABLE_REGION)

    _image_text_end = .;

#include <linker/common-rom.ld>

    SECTION_PROLOGUE(_RODATA_SECTION_NAME,,)
	{
		 . = ALIGN(4);
		 *(.srodata)
		 *(".srodata.*")
		 *(.rodata)
		 *(".rodata.*")
		 *(.gnu.linkonce.r.*)

#ifdef CONFIG_SOC_RODATA_LD
#include <soc-rodata.ld>
#endif

	} GROUP_LINK_IN(ROMABLE_REGION)

    _image_rom_end = .;
    __data_rom_start = .;

    GROUP_END(ROMABLE_REGION)

    GROUP_START(RAMABLE_REGION)

    SECTION_DATA_PROLOGUE(_DATA_SECTION_NAME,,)
	{
		 . = ALIGN(4);
		 _image_ram_start = .;
		 __data_ram_start = .;

		 *(.data)
		 *(".data.*")

		 *(.sdata .sdata.* .gnu.linkonce.s.*)
		 *(.sdata2 .sdata2.* .gnu.linkonce.s2.*)

#ifdef CONFIG_SOC_RWDATA_LD
#include <soc-rwdata.ld>
#endif

	}  GROUP_DATA_LINK_IN(RAMABLE_REGION, ROMABLE_REGION)

#include <linker/common-ram.ld>

    __data_ram_end = .;

    SECTION_DATA_PROLOGUE(_BSS_SECTION_NAME,(NOLOAD),)
	{
		/*
		 * For performance, BSS section is assumed to be 4 byte aligned and
		 * a multiple of 4 bytes
		 */
		 . = ALIGN(4);
		 __bss_start = .;
		 *(.sbss)
		 *(".sbss.*")
		 *(.bss)
		 *(".bss.*")
		 COMMON_SYMBOLS
		 /*
		  * As memory is cleared in words only, it is simpler to ensure the BSS
		  * section ends on a 4 byte boundary. This wastes a maximum of 3 bytes.
		  */
		  __bss_end = ALIGN(4);
	}  GROUP_DATA_LINK_IN(RAMABLE_REGION, RAMABLE_REGION)

    SECTION_PROLOGUE(_NOINIT_SECTION_NAME,(NOLOAD),)
	{
		/*
		 * This section is used for non-initialized objects that
		 * will not be cleared during the boot process.
		 */
		 *(.noinit)
		 *(".noinit.*")

#ifdef CONFIG_SOC_NOINIT_LD
#include <soc-noinit.ld>
#endif

	} GROUP_LINK_IN(RAMABLE_REGION)

     _image_ram_end = .;
     _end = .; /* end of image */

#ifdef CONFIG_GEN_ISR_TABLES
#include <linker/intlist.ld>
#endif

     GROUP_END(RAMABLE_REGION)

#include <linker/debug-sections.ld>

}

/*
 * Copyright (c) 2016-2017 Jean-Paul Etienne <fractalclone@gmail.com>
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/**
 * @file
 * @brief Linker command/script file
 *
 * Generic Linker script for the riscv32 platform
 */

#define _LINKER
#define _ASMLANGUAGE

#include <soc.h>

#include <autoconf.h>
#include <linker/sections.h>

#include <linker/linker-defs.h>
#include <linker/linker-tool.h>

#ifdef CONFIG_XIP
#define ROMABLE_REGION              ROM
#else
#define ROMABLE_REGION              RAM
#endif
#define RAMABLE_REGION              RAM

#define _VECTOR_SECTION_NAME        vector
#define _EXCEPTION_SECTION_NAME     exceptions
#define _RESET_SECTION_NAME         reset

MEMORY
{
#ifdef CONFIG_XIP
    ROM (rx)  : ORIGIN = CONFIG_RISCV_ROM_BASE_ADDR, LENGTH = CONFIG_RISCV_ROM_SIZE
#endif
    RAM (rwx) : ORIGIN = CONFIG_RISCV_RAM_BASE_ADDR, LENGTH = RISCV_RAM_SIZE
    /* Used by and documented in include/linker/intlist.ld */
    IDT_LIST  (wx)      : ORIGIN = 0xFFFFF7FF, LENGTH = 2K
}

ENTRY(CONFIG_KERNEL_ENTRY)

SECTIONS
    {

#include <linker/rel-sections.ld>

    /*
     * The .plt and .iplt are here according to
     * 'riscv32-zephyr-elf-ld --verbose', before text section.
     */
    SECTION_PROLOGUE(.plt,,)
	{
		*(.plt)
	}

    SECTION_PROLOGUE(.iplt,,)
	{
		*(.iplt)
	}

    GROUP_START(ROMABLE_REGION)
    _image_rom_start = .;

    SECTION_PROLOGUE(_VECTOR_SECTION_NAME,,)
    {
		. = ALIGN(4);
		KEEP(*(.vectors.*))
    } GROUP_LINK_IN(ROMABLE_REGION)

    SECTION_PROLOGUE(_RESET_SECTION_NAME,,)
    {
		KEEP(*(.reset.*))
    } GROUP_LINK_IN(ROMABLE_REGION)

    SECTION_PROLOGUE(_EXCEPTION_SECTION_NAME,,)
    {
		 KEEP(*(".exception.entry.*"))
		 *(".exception.other.*")
    } GROUP_LINK_IN(ROMABLE_REGION)

    SECTION_PROLOGUE(_TEXT_SECTION_NAME,,)
	{
		. = ALIGN(4);
		KEEP(*(.openocd_debug))
		KEEP(*(".openocd_debug.*"))

		_image_text_start = .;
		*(.text)
		*(".text.*")
		*(.gnu.linkonce.t.*)
		*(.eh_frame)
	} GROUP_LINK_IN(ROMABLE_REGION)

    _image_text_end = .;

#include <linker/common-rom.ld>

    SECTION_PROLOGUE(_RODATA_SECTION_NAME,,)
	{
		 . = ALIGN(4);
		 *(.rodata)
		 *(".rodata.*")
		 *(.gnu.linkonce.r.*)

#ifdef CONFIG_SOC_RODATA_LD
#include <soc-rodata.ld>
#endif

	} GROUP_LINK_IN(ROMABLE_REGION)

    _image_rom_end = .;
    __data_rom_start = .;

    GROUP_END(ROMABLE_REGION)

    GROUP_START(RAMABLE_REGION)

    SECTION_DATA_PROLOGUE(_DATA_SECTION_NAME,,)
	{
		 . = ALIGN(4);
		 _image_ram_start = .;
		 __data_ram_start = .;

		 *(.data)
		 *(".data.*")

		 *(.sdata .sdata.* .gnu.linkonce.s.*)
		 *(.sdata2 .sdata2.* .gnu.linkonce.s2.*)

#ifdef CONFIG_SOC_RWDATA_LD
#include <soc-rwdata.ld>
#endif

	}  GROUP_DATA_LINK_IN(RAMABLE_REGION, ROMABLE_REGION)

#include <linker/common-ram.ld>

    __data_ram_end = .;

    SECTION_DATA_PROLOGUE(_BSS_SECTION_NAME,(NOLOAD),)
	{
		/*
		 * For performance, BSS section is assumed to be 4 byte aligned and
		 * a multiple of 4 bytes
		 */
		 . = ALIGN(4);
		 __bss_start = .;
		 *(.sbss)
		 *(".sbss.*")
		 *(.bss)
		 *(".bss.*")
		 COMMON_SYMBOLS
		 /*
		  * As memory is cleared in words only, it is simpler to ensure the BSS
		  * section ends on a 4 byte boundary. This wastes a maximum of 3 bytes.
		  */
		  __bss_end = ALIGN(4);
	}  GROUP_DATA_LINK_IN(RAMABLE_REGION, RAMABLE_REGION)

    SECTION_PROLOGUE(_NOINIT_SECTION_NAME,(NOLOAD),)
	{
		/*
		 * This section is used for non-initialized objects that
		 * will not be cleared during the boot process.
		 */
		 *(.noinit)
		 *(".noinit.*")

#ifdef CONFIG_SOC_NOINIT_LD
#include <soc-noinit.ld>
#endif

	} GROUP_LINK_IN(RAMABLE_REGION)

     _image_ram_end = .;
     _end = .; /* end of image */

#ifdef CONFIG_GEN_ISR_TABLES
#include <linker/intlist.ld>
#endif

     GROUP_END(RAMABLE_REGION)

#include <linker/debug-sections.ld>

}


Update stm32f042x4.ld

Update stm32f042x4.ld

/*
 * STM32F042x4 linker script
 * Copyright (c) 2016 rksdna
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

ENTRY(startup_handler)

MEMORY
{
	sram (rwx) : ORIGIN = 0x20000000, LENGTH = 6K
	flash (rx) : ORIGIN = 0x08000000, LENGTH = 16K
}

SECTIONS
{
	.text :
	{
		*(.startup)
		*(.text*)
		*(.rodata*)
		. = ALIGN(4);
	} > flash
	text_section_end = .;

	.data : AT (text_section_end)
	{
		data_section_begin = .;
		*(.data*)
		. = ALIGN(4);
	} > sram
	data_section_end = .;

	.bss :
	{
		bss_section_begin = .;
		*(.bss*)
		*(COMMON)
		. = ALIGN(4);
	} > sram
	bss_section_end = .;

	stack_section_end = ORIGIN(sram) + LENGTH(sram);
}

/*
 * STM32F042x4 linker script
 * Copyright (c) 2016 Andrey Skrypka, Vladimir Trofimov
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

ENTRY(startup_handler)

MEMORY
{
	sram (rwx) : ORIGIN = 0x20000000, LENGTH = 6K
	flash (rx) : ORIGIN = 0x08000000, LENGTH = 16K
}

SECTIONS
{
	.text :
	{
		*(.startup)
		*(.text*)
		*(.rodata*)
		. = ALIGN(4);
	} > flash
	text_section_end = .;

	.data : AT (text_section_end)
	{
		data_section_begin = .;
		*(.data*)
		. = ALIGN(4);
	} > sram
	data_section_end = .;

	.bss :
	{
		bss_section_begin = .;
		*(.bss*)
		*(COMMON)
		. = ALIGN(4);
	} > sram
	bss_section_end = .;

	stack_section_end = ORIGIN(sram) + LENGTH(sram);
}