问实现arm Cortex-A9代码时，DS-5中的内存重叠

EN

 ;*******************************************************
 ; Copyright (c) 2011-2014 ARM Ltd.  All rights reserved.
 ;*******************************************************

 ; Scatter-file for Cortex-A9 bare-metal example on Versatile Express

 ; This scatter-file places application code, data, stack and heap at      suitable addresses in the memory map.
 ; Using a scatter-file with ARM_LIB_STACKHEAP eliminates the need to set stack-limit or heap-base in the debugger.

 ; Versatile Express with Cortex-A9 has 1GB SDRAM at 0x60000000 to      0x9FFFFFFF, which this scatter-file uses.


SDRAM 0x80000000 0x10000000
{
VECTORS +0
{
    * (VECTORS, +FIRST)     ; Vector table and other (assembler) startup code
    * (InRoot$$Sections)    ; All (library) code that must be in a root region
}

RO_CODE +0
{ * (+RO-CODE) }            ; Application RO code (.text)

RO_DATA +0
{ * (+RO-DATA) }            ; Application RO data (.constdata)

RW_DATA +0
{ * (+RW) }                 ; Application RW data (.data)

ZI_DATA +0
{ * (+ZI) }                 ; Application ZI data (.bss)

ARM_LIB_HEAP  0x80040000 EMPTY  0x00040000 ; Application heap
{ }

ARM_LIB_STACK 0x80090000 EMPTY -0x00010000 ; Application (SVC mode) stack
{ }

IRQ_STACK     0x800A0000 EMPTY -0x00010000 ; IRQ mode stack
{ }

TTB           0x80100000 EMPTY 0x4000      ; Level-1 Translation Table for      MMU
{ }
}