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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.

TARGET_DISCO_F407VG/TOOLCHAIN_GCC_ARM/STM32F407XG.ld@172:65be27845400, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 20:53:29 2019 +0000
Revision:
172:65be27845400
Parent:
171:3a7713b1edbc 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 161:aa5281ff4a02 1 /* Linker script to configure memory regions. */
AnnaBridge 161:aa5281ff4a02 2 MEMORY
AnnaBridge 161:aa5281ff4a02 3 {
AnnaBridge 161:aa5281ff4a02 4 FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 1024K
AnnaBridge 161:aa5281ff4a02 5 CCM (rwx) : ORIGIN = 0x10000000, LENGTH = 64K
AnnaBridge 161:aa5281ff4a02 6 RAM (rwx) : ORIGIN = 0x20000188, LENGTH = 128k - 0x188
AnnaBridge 161:aa5281ff4a02 7 }
AnnaBridge 161:aa5281ff4a02 8
AnnaBridge 161:aa5281ff4a02 9 /* Linker script to place sections and symbol values. Should be used together
AnnaBridge 161:aa5281ff4a02 10 * with other linker script that defines memory regions FLASH and RAM.
AnnaBridge 161:aa5281ff4a02 11 * It references following symbols, which must be defined in code:
AnnaBridge 161:aa5281ff4a02 12 * Reset_Handler : Entry of reset handler
AnnaBridge 161:aa5281ff4a02 13 *
AnnaBridge 161:aa5281ff4a02 14 * It defines following symbols, which code can use without definition:
AnnaBridge 161:aa5281ff4a02 15 * __exidx_start
AnnaBridge 161:aa5281ff4a02 16 * __exidx_end
AnnaBridge 161:aa5281ff4a02 17 * __etext
AnnaBridge 161:aa5281ff4a02 18 * __data_start__
AnnaBridge 161:aa5281ff4a02 19 * __preinit_array_start
AnnaBridge 161:aa5281ff4a02 20 * __preinit_array_end
AnnaBridge 161:aa5281ff4a02 21 * __init_array_start
AnnaBridge 161:aa5281ff4a02 22 * __init_array_end
AnnaBridge 161:aa5281ff4a02 23 * __fini_array_start
AnnaBridge 161:aa5281ff4a02 24 * __fini_array_end
AnnaBridge 161:aa5281ff4a02 25 * __data_end__
AnnaBridge 161:aa5281ff4a02 26 * __bss_start__
AnnaBridge 161:aa5281ff4a02 27 * __bss_end__
AnnaBridge 161:aa5281ff4a02 28 * __end__
AnnaBridge 161:aa5281ff4a02 29 * end
AnnaBridge 161:aa5281ff4a02 30 * __HeapLimit
AnnaBridge 161:aa5281ff4a02 31 * __StackLimit
AnnaBridge 161:aa5281ff4a02 32 * __StackTop
AnnaBridge 161:aa5281ff4a02 33 * __stack
AnnaBridge 161:aa5281ff4a02 34 * _estack
AnnaBridge 161:aa5281ff4a02 35 */
AnnaBridge 161:aa5281ff4a02 36 ENTRY(Reset_Handler)
AnnaBridge 161:aa5281ff4a02 37
AnnaBridge 161:aa5281ff4a02 38 SECTIONS
AnnaBridge 161:aa5281ff4a02 39 {
AnnaBridge 161:aa5281ff4a02 40 .text :
AnnaBridge 161:aa5281ff4a02 41 {
AnnaBridge 161:aa5281ff4a02 42 KEEP(*(.isr_vector))
AnnaBridge 161:aa5281ff4a02 43 *(.text*)
AnnaBridge 161:aa5281ff4a02 44 KEEP(*(.init))
AnnaBridge 161:aa5281ff4a02 45 KEEP(*(.fini))
AnnaBridge 161:aa5281ff4a02 46
AnnaBridge 161:aa5281ff4a02 47 /* .ctors */
AnnaBridge 161:aa5281ff4a02 48 *crtbegin.o(.ctors)
AnnaBridge 161:aa5281ff4a02 49 *crtbegin?.o(.ctors)
AnnaBridge 161:aa5281ff4a02 50 *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
AnnaBridge 161:aa5281ff4a02 51 *(SORT(.ctors.*))
AnnaBridge 161:aa5281ff4a02 52 *(.ctors)
AnnaBridge 161:aa5281ff4a02 53
AnnaBridge 161:aa5281ff4a02 54 /* .dtors */
AnnaBridge 161:aa5281ff4a02 55 *crtbegin.o(.dtors)
AnnaBridge 161:aa5281ff4a02 56 *crtbegin?.o(.dtors)
AnnaBridge 161:aa5281ff4a02 57 *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
AnnaBridge 161:aa5281ff4a02 58 *(SORT(.dtors.*))
AnnaBridge 161:aa5281ff4a02 59 *(.dtors)
AnnaBridge 161:aa5281ff4a02 60
AnnaBridge 161:aa5281ff4a02 61 *(.rodata*)
AnnaBridge 161:aa5281ff4a02 62
AnnaBridge 161:aa5281ff4a02 63 KEEP(*(.eh_frame*))
AnnaBridge 161:aa5281ff4a02 64 } > FLASH
AnnaBridge 161:aa5281ff4a02 65
AnnaBridge 161:aa5281ff4a02 66 .ARM.extab :
AnnaBridge 161:aa5281ff4a02 67 {
AnnaBridge 161:aa5281ff4a02 68 *(.ARM.extab* .gnu.linkonce.armextab.*)
AnnaBridge 161:aa5281ff4a02 69 } > FLASH
AnnaBridge 161:aa5281ff4a02 70
AnnaBridge 161:aa5281ff4a02 71 __exidx_start = .;
AnnaBridge 161:aa5281ff4a02 72 .ARM.exidx :
AnnaBridge 161:aa5281ff4a02 73 {
AnnaBridge 161:aa5281ff4a02 74 *(.ARM.exidx* .gnu.linkonce.armexidx.*)
AnnaBridge 161:aa5281ff4a02 75 } > FLASH
AnnaBridge 161:aa5281ff4a02 76 __exidx_end = .;
AnnaBridge 161:aa5281ff4a02 77
AnnaBridge 161:aa5281ff4a02 78 __etext = .;
AnnaBridge 161:aa5281ff4a02 79 _sidata = .;
AnnaBridge 161:aa5281ff4a02 80
AnnaBridge 161:aa5281ff4a02 81 .data : AT (__etext)
AnnaBridge 161:aa5281ff4a02 82 {
AnnaBridge 161:aa5281ff4a02 83 __data_start__ = .;
AnnaBridge 161:aa5281ff4a02 84 _sdata = .;
AnnaBridge 161:aa5281ff4a02 85 *(vtable)
AnnaBridge 161:aa5281ff4a02 86 *(.data*)
AnnaBridge 161:aa5281ff4a02 87
AnnaBridge 171:3a7713b1edbc 88 . = ALIGN(8);
AnnaBridge 161:aa5281ff4a02 89 /* preinit data */
AnnaBridge 161:aa5281ff4a02 90 PROVIDE_HIDDEN (__preinit_array_start = .);
AnnaBridge 161:aa5281ff4a02 91 KEEP(*(.preinit_array))
AnnaBridge 161:aa5281ff4a02 92 PROVIDE_HIDDEN (__preinit_array_end = .);
AnnaBridge 161:aa5281ff4a02 93
AnnaBridge 171:3a7713b1edbc 94 . = ALIGN(8);
AnnaBridge 161:aa5281ff4a02 95 /* init data */
AnnaBridge 161:aa5281ff4a02 96 PROVIDE_HIDDEN (__init_array_start = .);
AnnaBridge 161:aa5281ff4a02 97 KEEP(*(SORT(.init_array.*)))
AnnaBridge 161:aa5281ff4a02 98 KEEP(*(.init_array))
AnnaBridge 161:aa5281ff4a02 99 PROVIDE_HIDDEN (__init_array_end = .);
AnnaBridge 161:aa5281ff4a02 100
AnnaBridge 161:aa5281ff4a02 101
AnnaBridge 171:3a7713b1edbc 102 . = ALIGN(8);
AnnaBridge 161:aa5281ff4a02 103 /* finit data */
AnnaBridge 161:aa5281ff4a02 104 PROVIDE_HIDDEN (__fini_array_start = .);
AnnaBridge 161:aa5281ff4a02 105 KEEP(*(SORT(.fini_array.*)))
AnnaBridge 161:aa5281ff4a02 106 KEEP(*(.fini_array))
AnnaBridge 161:aa5281ff4a02 107 PROVIDE_HIDDEN (__fini_array_end = .);
AnnaBridge 161:aa5281ff4a02 108
AnnaBridge 161:aa5281ff4a02 109 KEEP(*(.jcr*))
AnnaBridge 171:3a7713b1edbc 110 . = ALIGN(8);
AnnaBridge 161:aa5281ff4a02 111 /* All data end */
AnnaBridge 161:aa5281ff4a02 112 __data_end__ = .;
AnnaBridge 161:aa5281ff4a02 113 _edata = .;
AnnaBridge 161:aa5281ff4a02 114
AnnaBridge 161:aa5281ff4a02 115 } > RAM
AnnaBridge 161:aa5281ff4a02 116
AnnaBridge 161:aa5281ff4a02 117 .bss :
AnnaBridge 161:aa5281ff4a02 118 {
AnnaBridge 171:3a7713b1edbc 119 . = ALIGN(8);
AnnaBridge 161:aa5281ff4a02 120 __bss_start__ = .;
AnnaBridge 161:aa5281ff4a02 121 _sbss = .;
AnnaBridge 161:aa5281ff4a02 122 *(.bss*)
AnnaBridge 161:aa5281ff4a02 123 *(COMMON)
AnnaBridge 171:3a7713b1edbc 124 . = ALIGN(8);
AnnaBridge 161:aa5281ff4a02 125 __bss_end__ = .;
AnnaBridge 161:aa5281ff4a02 126 _ebss = .;
AnnaBridge 161:aa5281ff4a02 127 } > RAM
AnnaBridge 161:aa5281ff4a02 128
AnnaBridge 161:aa5281ff4a02 129 .heap (COPY):
AnnaBridge 161:aa5281ff4a02 130 {
AnnaBridge 161:aa5281ff4a02 131 __end__ = .;
AnnaBridge 161:aa5281ff4a02 132 end = __end__;
AnnaBridge 161:aa5281ff4a02 133 *(.heap*)
AnnaBridge 161:aa5281ff4a02 134 __HeapLimit = .;
AnnaBridge 161:aa5281ff4a02 135 } > RAM
AnnaBridge 161:aa5281ff4a02 136
AnnaBridge 161:aa5281ff4a02 137 /* .stack_dummy section doesn't contains any symbols. It is only
AnnaBridge 161:aa5281ff4a02 138 * used for linker to calculate size of stack sections, and assign
AnnaBridge 161:aa5281ff4a02 139 * values to stack symbols later */
AnnaBridge 161:aa5281ff4a02 140 .stack_dummy (COPY):
AnnaBridge 161:aa5281ff4a02 141 {
AnnaBridge 161:aa5281ff4a02 142 *(.stack*)
AnnaBridge 161:aa5281ff4a02 143 } > RAM
AnnaBridge 161:aa5281ff4a02 144
AnnaBridge 161:aa5281ff4a02 145 /* Set stack top to end of RAM, and stack limit move down by
AnnaBridge 161:aa5281ff4a02 146 * size of stack_dummy section */
AnnaBridge 161:aa5281ff4a02 147 __StackTop = ORIGIN(RAM) + LENGTH(RAM);
AnnaBridge 161:aa5281ff4a02 148 _estack = __StackTop;
AnnaBridge 161:aa5281ff4a02 149 __StackLimit = __StackTop - SIZEOF(.stack_dummy);
AnnaBridge 161:aa5281ff4a02 150 PROVIDE(__stack = __StackTop);
AnnaBridge 161:aa5281ff4a02 151
AnnaBridge 161:aa5281ff4a02 152 /* Check if data + heap + stack exceeds RAM limit */
AnnaBridge 161:aa5281ff4a02 153 ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
AnnaBridge 161:aa5281ff4a02 154 }