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https://opencores.org/ocsvn/scarts/scarts/trunk
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[/] [scarts/] [trunk/] [toolchain/] [scarts-memmap/] [src/] [gdb-stub/] [scarts_16-gdb-stub.ld] - Rev 14
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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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/* .gnu.warning sections are handled specially by elf32.em. */
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.fini :
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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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/* MWA: For some, yet unknown, reason, large data types may be misaligned at
the LMA, but be correctly aligned at the VMA. As an imperfect workaround
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KEEP (*crtbegin?.o(.ctors))
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KEEP (*(SORT(.ctors.*)))
KEEP (*(.ctors))
}
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{
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KEEP (*crtbegin?.o(.dtors))
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/* MWA: For some, yet unknown, reason, large data types may be misaligned at
the LMA, but be correctly aligned at the VMA. As an imperfect workaround
we enforce proper alignment by the following simple address arithmetic:
LMA(x) = VMA(x) (for RAM == RAM_LMA) */
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KEEP (*(.gnu.linkonce.d.*personality*))
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/* MWA: For some, yet unknown, reason, large data types may be misaligned at
the LMA, but be correctly aligned at the VMA. As an imperfect workaround
we enforce proper alignment by the following simple address arithmetic:
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FIXME: Why do we need it? When there is no .bss section, we don't
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}
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