tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_DISCO_F429ZI/TOOLCHAIN_GCC_ARM/STM32F429ZI.ld

   1 /* Linker script to configure memory regions. */
   2 MEMORY
   3 {
   4   FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 2048k
   5   CCM (rwx) : ORIGIN = 0x10000000, LENGTH = 64K
   6   RAM (rwx) : ORIGIN = 0x200001AC, LENGTH = 192k - 0x1AC
   7 }
   8
   9 /* Linker script to place sections and symbol values. Should be used together
  10  * with other linker script that defines memory regions FLASH and RAM.
  11  * It references following symbols, which must be defined in code:
  12  *   Reset_Handler : Entry of reset handler
  13  *
  14  * It defines following symbols, which code can use without definition:
  15  *   __exidx_start
  16  *   __exidx_end
  17  *   __etext
  18  *   __data_start__
  19  *   __preinit_array_start
  20  *   __preinit_array_end
  21  *   __init_array_start
  22  *   __init_array_end
  23  *   __fini_array_start
  24  *   __fini_array_end
  25  *   __data_end__
  26  *   __bss_start__
  27  *   __bss_end__
  28  *   __end__
  29  *   end
  30  *   __HeapLimit
  31  *   __StackLimit
  32  *   __StackTop
  33  *   __stack
  34  *   _estack
  35  */
  36 ENTRY(Reset_Handler)
  37
  38 SECTIONS
  39 {
  40     .text :
  41     {
  42         KEEP(*(.isr_vector))
  43         *(.text*)
  44         KEEP(*(.init))
  45         KEEP(*(.fini))
  46
  47         /* .ctors */
  48         *crtbegin.o(.ctors)
  49         *crtbegin?.o(.ctors)
  50         *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
  51         *(SORT(.ctors.*))
  52         *(.ctors)
  53
  54         /* .dtors */
  55         *crtbegin.o(.dtors)
  56         *crtbegin?.o(.dtors)
  57         *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
  58         *(SORT(.dtors.*))
  59         *(.dtors)
  60
  61         *(.rodata*)
  62
  63         KEEP(*(.eh_frame*))
  64     } > FLASH
  65
  66     .ARM.extab :
  67     {
  68         *(.ARM.extab* .gnu.linkonce.armextab.*)
  69     } > FLASH
  70
  71     __exidx_start = .;
  72     .ARM.exidx :
  73     {
  74         *(.ARM.exidx* .gnu.linkonce.armexidx.*)
  75     } > FLASH
  76     __exidx_end = .;
  77
  78     __etext = .;
  79     _sidata = .;
  80
  81     .data : AT (__etext)
  82     {
  83         __data_start__ = .;
  84         _sdata = .;
  85         *(vtable)
  86         *(.data*)
  87
  88         . = ALIGN(4);
  89         /* preinit data */
  90         PROVIDE_HIDDEN (__preinit_array_start = .);
  91         KEEP(*(.preinit_array))
  92         PROVIDE_HIDDEN (__preinit_array_end = .);
  93
  94         . = ALIGN(4);
  95         /* init data */
  96         PROVIDE_HIDDEN (__init_array_start = .);
  97         KEEP(*(SORT(.init_array.*)))
  98         KEEP(*(.init_array))
  99         PROVIDE_HIDDEN (__init_array_end = .);
 100
 101
 102         . = ALIGN(4);
 103         /* finit data */
 104         PROVIDE_HIDDEN (__fini_array_start = .);
 105         KEEP(*(SORT(.fini_array.*)))
 106         KEEP(*(.fini_array))
 107         PROVIDE_HIDDEN (__fini_array_end = .);
 108
 109         KEEP(*(.jcr*))
 110         . = ALIGN(4);
 111         /* All data end */
 112         __data_end__ = .;
 113         _edata = .;
 114
 115     } > RAM
 116
 117     .bss :
 118     {
 119         . = ALIGN(4);
 120         __bss_start__ = .;
 121         _sbss = .;
 122         *(.bss*)
 123         *(COMMON)
 124         . = ALIGN(4);
 125         __bss_end__ = .;
 126         _ebss = .;
 127     } > RAM
 128
 129     .heap (COPY):
 130     {
 131         __end__ = .;
 132         end = __end__;
 133         *(.heap*)
 134         __HeapLimit = .;
 135     } > RAM
 136
 137     /* .stack_dummy section doesn't contains any symbols. It is only
 138      * used for linker to calculate size of stack sections, and assign
 139      * values to stack symbols later */
 140     .stack_dummy (COPY):
 141     {
 142         *(.stack*)
 143     } > RAM
 144
 145     /* Set stack top to end of RAM, and stack limit move down by
 146      * size of stack_dummy section */
 147     __StackTop = ORIGIN(RAM) + LENGTH(RAM);
 148     _estack = __StackTop;
 149     __StackLimit = __StackTop - SIZEOF(.stack_dummy);
 150     PROVIDE(__stack = __StackTop);
 151
 152     /* Check if data + heap + stack exceeds RAM limit */
 153     ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
 154 }