The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

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mbed 2

This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.

Committer:
mbed_official
Date:
Thu Dec 21 18:20:02 2017 +0000
Revision:
159:7130f322cb7e
Child:
167:84c0a372a020
mbed library version 157

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 159:7130f322cb7e 1 /* Linker script to configure memory regions. */
mbed_official 159:7130f322cb7e 2 MEMORY
mbed_official 159:7130f322cb7e 3 {
mbed_official 159:7130f322cb7e 4 FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 512K
mbed_official 159:7130f322cb7e 5 RAM (rwx) : ORIGIN = 0x20000198, LENGTH = 128k - 0x198
mbed_official 159:7130f322cb7e 6 }
mbed_official 159:7130f322cb7e 7
mbed_official 159:7130f322cb7e 8 /* Linker script to place sections and symbol values. Should be used together
mbed_official 159:7130f322cb7e 9 * with other linker script that defines memory regions FLASH and RAM.
mbed_official 159:7130f322cb7e 10 * It references following symbols, which must be defined in code:
mbed_official 159:7130f322cb7e 11 * Reset_Handler : Entry of reset handler
mbed_official 159:7130f322cb7e 12 *
mbed_official 159:7130f322cb7e 13 * It defines following symbols, which code can use without definition:
mbed_official 159:7130f322cb7e 14 * __exidx_start
mbed_official 159:7130f322cb7e 15 * __exidx_end
mbed_official 159:7130f322cb7e 16 * __etext
mbed_official 159:7130f322cb7e 17 * __data_start__
mbed_official 159:7130f322cb7e 18 * __preinit_array_start
mbed_official 159:7130f322cb7e 19 * __preinit_array_end
mbed_official 159:7130f322cb7e 20 * __init_array_start
mbed_official 159:7130f322cb7e 21 * __init_array_end
mbed_official 159:7130f322cb7e 22 * __fini_array_start
mbed_official 159:7130f322cb7e 23 * __fini_array_end
mbed_official 159:7130f322cb7e 24 * __data_end__
mbed_official 159:7130f322cb7e 25 * __bss_start__
mbed_official 159:7130f322cb7e 26 * __bss_end__
mbed_official 159:7130f322cb7e 27 * __end__
mbed_official 159:7130f322cb7e 28 * end
mbed_official 159:7130f322cb7e 29 * __HeapLimit
mbed_official 159:7130f322cb7e 30 * __StackLimit
mbed_official 159:7130f322cb7e 31 * __StackTop
mbed_official 159:7130f322cb7e 32 * __stack
mbed_official 159:7130f322cb7e 33 * _estack
mbed_official 159:7130f322cb7e 34 */
mbed_official 159:7130f322cb7e 35 ENTRY(Reset_Handler)
mbed_official 159:7130f322cb7e 36
mbed_official 159:7130f322cb7e 37 SECTIONS
mbed_official 159:7130f322cb7e 38 {
mbed_official 159:7130f322cb7e 39 .text :
mbed_official 159:7130f322cb7e 40 {
mbed_official 159:7130f322cb7e 41 KEEP(*(.isr_vector))
mbed_official 159:7130f322cb7e 42 *(.text*)
mbed_official 159:7130f322cb7e 43 KEEP(*(.init))
mbed_official 159:7130f322cb7e 44 KEEP(*(.fini))
mbed_official 159:7130f322cb7e 45
mbed_official 159:7130f322cb7e 46 /* .ctors */
mbed_official 159:7130f322cb7e 47 *crtbegin.o(.ctors)
mbed_official 159:7130f322cb7e 48 *crtbegin?.o(.ctors)
mbed_official 159:7130f322cb7e 49 *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
mbed_official 159:7130f322cb7e 50 *(SORT(.ctors.*))
mbed_official 159:7130f322cb7e 51 *(.ctors)
mbed_official 159:7130f322cb7e 52
mbed_official 159:7130f322cb7e 53 /* .dtors */
mbed_official 159:7130f322cb7e 54 *crtbegin.o(.dtors)
mbed_official 159:7130f322cb7e 55 *crtbegin?.o(.dtors)
mbed_official 159:7130f322cb7e 56 *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
mbed_official 159:7130f322cb7e 57 *(SORT(.dtors.*))
mbed_official 159:7130f322cb7e 58 *(.dtors)
mbed_official 159:7130f322cb7e 59
mbed_official 159:7130f322cb7e 60 *(.rodata*)
mbed_official 159:7130f322cb7e 61
mbed_official 159:7130f322cb7e 62 KEEP(*(.eh_frame*))
mbed_official 159:7130f322cb7e 63 } > FLASH
mbed_official 159:7130f322cb7e 64
mbed_official 159:7130f322cb7e 65 .ARM.extab :
mbed_official 159:7130f322cb7e 66 {
mbed_official 159:7130f322cb7e 67 *(.ARM.extab* .gnu.linkonce.armextab.*)
mbed_official 159:7130f322cb7e 68 } > FLASH
mbed_official 159:7130f322cb7e 69
mbed_official 159:7130f322cb7e 70 __exidx_start = .;
mbed_official 159:7130f322cb7e 71 .ARM.exidx :
mbed_official 159:7130f322cb7e 72 {
mbed_official 159:7130f322cb7e 73 *(.ARM.exidx* .gnu.linkonce.armexidx.*)
mbed_official 159:7130f322cb7e 74 } > FLASH
mbed_official 159:7130f322cb7e 75 __exidx_end = .;
mbed_official 159:7130f322cb7e 76
mbed_official 159:7130f322cb7e 77 __etext = .;
mbed_official 159:7130f322cb7e 78 _sidata = .;
mbed_official 159:7130f322cb7e 79
mbed_official 159:7130f322cb7e 80 .data : AT (__etext)
mbed_official 159:7130f322cb7e 81 {
mbed_official 159:7130f322cb7e 82 __data_start__ = .;
mbed_official 159:7130f322cb7e 83 _sdata = .;
mbed_official 159:7130f322cb7e 84 *(vtable)
mbed_official 159:7130f322cb7e 85 *(.data*)
mbed_official 159:7130f322cb7e 86
mbed_official 159:7130f322cb7e 87 . = ALIGN(4);
mbed_official 159:7130f322cb7e 88 /* preinit data */
mbed_official 159:7130f322cb7e 89 PROVIDE_HIDDEN (__preinit_array_start = .);
mbed_official 159:7130f322cb7e 90 KEEP(*(.preinit_array))
mbed_official 159:7130f322cb7e 91 PROVIDE_HIDDEN (__preinit_array_end = .);
mbed_official 159:7130f322cb7e 92
mbed_official 159:7130f322cb7e 93 . = ALIGN(4);
mbed_official 159:7130f322cb7e 94 /* init data */
mbed_official 159:7130f322cb7e 95 PROVIDE_HIDDEN (__init_array_start = .);
mbed_official 159:7130f322cb7e 96 KEEP(*(SORT(.init_array.*)))
mbed_official 159:7130f322cb7e 97 KEEP(*(.init_array))
mbed_official 159:7130f322cb7e 98 PROVIDE_HIDDEN (__init_array_end = .);
mbed_official 159:7130f322cb7e 99
mbed_official 159:7130f322cb7e 100
mbed_official 159:7130f322cb7e 101 . = ALIGN(4);
mbed_official 159:7130f322cb7e 102 /* finit data */
mbed_official 159:7130f322cb7e 103 PROVIDE_HIDDEN (__fini_array_start = .);
mbed_official 159:7130f322cb7e 104 KEEP(*(SORT(.fini_array.*)))
mbed_official 159:7130f322cb7e 105 KEEP(*(.fini_array))
mbed_official 159:7130f322cb7e 106 PROVIDE_HIDDEN (__fini_array_end = .);
mbed_official 159:7130f322cb7e 107
mbed_official 159:7130f322cb7e 108 KEEP(*(.jcr*))
mbed_official 159:7130f322cb7e 109 . = ALIGN(4);
mbed_official 159:7130f322cb7e 110 /* All data end */
mbed_official 159:7130f322cb7e 111 __data_end__ = .;
mbed_official 159:7130f322cb7e 112 _edata = .;
mbed_official 159:7130f322cb7e 113
mbed_official 159:7130f322cb7e 114 } > RAM
mbed_official 159:7130f322cb7e 115
mbed_official 159:7130f322cb7e 116 .bss :
mbed_official 159:7130f322cb7e 117 {
mbed_official 159:7130f322cb7e 118 . = ALIGN(4);
mbed_official 159:7130f322cb7e 119 __bss_start__ = .;
mbed_official 159:7130f322cb7e 120 _sbss = .;
mbed_official 159:7130f322cb7e 121 *(.bss*)
mbed_official 159:7130f322cb7e 122 *(COMMON)
mbed_official 159:7130f322cb7e 123 . = ALIGN(4);
mbed_official 159:7130f322cb7e 124 __bss_end__ = .;
mbed_official 159:7130f322cb7e 125 _ebss = .;
mbed_official 159:7130f322cb7e 126 } > RAM
mbed_official 159:7130f322cb7e 127
mbed_official 159:7130f322cb7e 128 .heap (COPY):
mbed_official 159:7130f322cb7e 129 {
mbed_official 159:7130f322cb7e 130 __end__ = .;
mbed_official 159:7130f322cb7e 131 end = __end__;
mbed_official 159:7130f322cb7e 132 *(.heap*)
mbed_official 159:7130f322cb7e 133 __HeapLimit = .;
mbed_official 159:7130f322cb7e 134 } > RAM
mbed_official 159:7130f322cb7e 135
mbed_official 159:7130f322cb7e 136 /* .stack_dummy section doesn't contains any symbols. It is only
mbed_official 159:7130f322cb7e 137 * used for linker to calculate size of stack sections, and assign
mbed_official 159:7130f322cb7e 138 * values to stack symbols later */
mbed_official 159:7130f322cb7e 139 .stack_dummy (COPY):
mbed_official 159:7130f322cb7e 140 {
mbed_official 159:7130f322cb7e 141 *(.stack*)
mbed_official 159:7130f322cb7e 142 } > RAM
mbed_official 159:7130f322cb7e 143
mbed_official 159:7130f322cb7e 144 /* Set stack top to end of RAM, and stack limit move down by
mbed_official 159:7130f322cb7e 145 * size of stack_dummy section */
mbed_official 159:7130f322cb7e 146 __StackTop = ORIGIN(RAM) + LENGTH(RAM);
mbed_official 159:7130f322cb7e 147 _estack = __StackTop;
mbed_official 159:7130f322cb7e 148 __StackLimit = __StackTop - SIZEOF(.stack_dummy);
mbed_official 159:7130f322cb7e 149 PROVIDE(__stack = __StackTop);
mbed_official 159:7130f322cb7e 150
mbed_official 159:7130f322cb7e 151 /* Check if data + heap + stack exceeds RAM limit */
mbed_official 159:7130f322cb7e 152 ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
mbed_official 159:7130f322cb7e 153 }