Subversion Repositories scarts

ENTRY(_start)
OUTPUT_FORMAT("elf32-scarts_16", "elf32-scarts_16", "elf32-scarts_16")
OUTPUT_ARCH(scarts_16)
SEARCH_DIR(@SCARTS_SEARCH_DIR@)

/*
 * This is the map for the code memory (addresses grow downwards)
 * +--------------------+ <- @SCARTS_BOOTROM_VMA_START@
 * | .text              |
 * +--------------------+ <- @SCARTS_BOOTROM_VMA_END@
 *
 * This is the map for the data memory (addresses grow downwards)
 * +--------------------+ <- @SCARTS_DATAMEM_BOOTLOADER_VMA_START@
 * | .rodata            | constant data goes here
 * +--------------------+
 * | .data              | initialized data goes here
 * +--------------------+
 * | .bss               |
 * |        __bss_start | start of bss
 * |        _end        | start of heap
 * +--------------------+
 * .                    .
 * .                    .
 * .                    .
 * |        __stack     | top of stack
 * +--------------------+ <- @SCARTS_DATAMEM_BOOTLOADER_VMA_END@
 */

/* MWA: please see important comments on the allocation of various sections in
   memory throughout this document. */
MEMORY
{
  ROM     (rx)  : ORIGIN = @SCARTS_BOOTROM_VMA_START@, LENGTH = @SCARTS_BOOTROM_SIZE@
  ROM_LMA (rx)  : ORIGIN = @SCARTS_BOOTROM_LMA_START@, LENGTH = @SCARTS_BOOTROM_SIZE@
  RAM     (!rx) : ORIGIN = @SCARTS_DATAMEM_BOOTLOADER_VMA_START@, LENGTH = @SCARTS_DATAMEM_BOOTLOADER_SIZE@
  RAM_LMA (!rx) : ORIGIN = @SCARTS_DATAMEM_BOOTLOADER_LMA_START@, LENGTH = @SCARTS_DATAMEM_BOOTLOADER_SIZE@
}

/* Allocate the stack at the top of the data memory, since the stack grows down. */
PROVIDE (__stack = @SCARTS_DATAMEM_BOOTLOADER_VMA_END@ + 1);

SECTIONS
{
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  .init           :
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  {
    *(.text .stub .text.* .gnu.linkonce.t.*)
    KEEP (*(.text.*personality*))
    /* .gnu.warning sections are handled specially by elf32.em.  */
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    KEEP (*(.fini))
  } =0
  PROVIDE (__etext = .);
  PROVIDE (_etext = .);
  PROVIDE (etext = .);
  /* MWA: The .rodata section is allocated in RAM, not in ROM, since, in the
     SCARTS architecture, the ROM can only be addressed instruction-wise. As
     a result, the address for the data segment is reset before the .rodata
     section is defined. */
  /* Adjust the address for the data segment.  We want to adjust up to
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  .eh_frame       : ONLY_IF_RO { KEEP (*(.eh_frame)) }
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    /* gcc uses crtbegin.o to find the start of
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    KEEP (*(SORT(.ctors.*)))
    KEEP (*(.ctors))
  }
  .dtors          :
  {
    KEEP (*crtbegin.o(.dtors))
    KEEP (*crtbegin?.o(.dtors))
    KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
    KEEP (*(SORT(.dtors.*)))
    KEEP (*(.dtors))
  }
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  /* MWA: For some, yet unknown, reason, large data types may be misaligned at
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  /* MWA: For some, yet unknown, reason, large data types may be misaligned at
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}