mbed official / mbed

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_ARCH_PRO/TOOLCHAIN_GCC_ARM/LPC1768.ld@147:a97add6d7e64, 2017-07-19 (annotated)

Committer:
Kojto
Date:
Wed Jul 19 16:46:19 2017 +0100
Revision:
147:a97add6d7e64
Parent:
145:64910690c574
Child:
154:fb8e0ae1cceb
Release 147 of the mbed library.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 85:024bf7f99721 1 /* Linker script for mbed LPC1768 */
bogdanm 85:024bf7f99721 2
bogdanm 85:024bf7f99721 3 /* Linker script to configure memory regions. */
bogdanm 85:024bf7f99721 4 MEMORY
bogdanm 85:024bf7f99721 5 {
bogdanm 85:024bf7f99721 6 FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 512K
AnnaBridge 145:64910690c574 7 RAM (rwx) : ORIGIN = 0x100000C8, LENGTH = (32K - 0xC8 - 32) /* topmost 32 bytes used by IAP functions */
bogdanm 85:024bf7f99721 8
bogdanm 85:024bf7f99721 9 USB_RAM(rwx) : ORIGIN = 0x2007C000, LENGTH = 16K
bogdanm 85:024bf7f99721 10 ETH_RAM(rwx) : ORIGIN = 0x20080000, LENGTH = 16K
bogdanm 85:024bf7f99721 11 }
bogdanm 85:024bf7f99721 12
bogdanm 85:024bf7f99721 13 /* Linker script to place sections and symbol values. Should be used together
bogdanm 85:024bf7f99721 14 * with other linker script that defines memory regions FLASH and RAM.
bogdanm 85:024bf7f99721 15 * It references following symbols, which must be defined in code:
bogdanm 85:024bf7f99721 16 * Reset_Handler : Entry of reset handler
bogdanm 85:024bf7f99721 17 *
bogdanm 85:024bf7f99721 18 * It defines following symbols, which code can use without definition:
bogdanm 85:024bf7f99721 19 * __exidx_start
bogdanm 85:024bf7f99721 20 * __exidx_end
bogdanm 85:024bf7f99721 21 * __etext
bogdanm 85:024bf7f99721 22 * __data_start__
bogdanm 85:024bf7f99721 23 * __preinit_array_start
bogdanm 85:024bf7f99721 24 * __preinit_array_end
bogdanm 85:024bf7f99721 25 * __init_array_start
bogdanm 85:024bf7f99721 26 * __init_array_end
bogdanm 85:024bf7f99721 27 * __fini_array_start
bogdanm 85:024bf7f99721 28 * __fini_array_end
bogdanm 85:024bf7f99721 29 * __data_end__
bogdanm 85:024bf7f99721 30 * __bss_start__
bogdanm 85:024bf7f99721 31 * __bss_end__
bogdanm 85:024bf7f99721 32 * __end__
bogdanm 85:024bf7f99721 33 * end
bogdanm 85:024bf7f99721 34 * __HeapLimit
bogdanm 85:024bf7f99721 35 * __StackLimit
bogdanm 85:024bf7f99721 36 * __StackTop
bogdanm 85:024bf7f99721 37 * __stack
bogdanm 85:024bf7f99721 38 */
bogdanm 85:024bf7f99721 39 ENTRY(Reset_Handler)
bogdanm 85:024bf7f99721 40
bogdanm 85:024bf7f99721 41 SECTIONS
bogdanm 85:024bf7f99721 42 {
bogdanm 85:024bf7f99721 43 .text :
bogdanm 85:024bf7f99721 44 {
bogdanm 85:024bf7f99721 45 KEEP(*(.isr_vector))
bogdanm 85:024bf7f99721 46 *(.text*)
bogdanm 85:024bf7f99721 47
bogdanm 85:024bf7f99721 48 KEEP(*(.init))
bogdanm 85:024bf7f99721 49 KEEP(*(.fini))
bogdanm 85:024bf7f99721 50
bogdanm 85:024bf7f99721 51 /* .ctors */
bogdanm 85:024bf7f99721 52 *crtbegin.o(.ctors)
bogdanm 85:024bf7f99721 53 *crtbegin?.o(.ctors)
bogdanm 85:024bf7f99721 54 *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
bogdanm 85:024bf7f99721 55 *(SORT(.ctors.*))
bogdanm 85:024bf7f99721 56 *(.ctors)
bogdanm 85:024bf7f99721 57
bogdanm 85:024bf7f99721 58 /* .dtors */
bogdanm 85:024bf7f99721 59 *crtbegin.o(.dtors)
bogdanm 85:024bf7f99721 60 *crtbegin?.o(.dtors)
bogdanm 85:024bf7f99721 61 *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
bogdanm 85:024bf7f99721 62 *(SORT(.dtors.*))
bogdanm 85:024bf7f99721 63 *(.dtors)
bogdanm 85:024bf7f99721 64
bogdanm 85:024bf7f99721 65 *(.rodata*)
bogdanm 85:024bf7f99721 66
bogdanm 85:024bf7f99721 67 KEEP(*(.eh_frame*))
bogdanm 85:024bf7f99721 68 } > FLASH
bogdanm 85:024bf7f99721 69
bogdanm 85:024bf7f99721 70 .ARM.extab :
bogdanm 85:024bf7f99721 71 {
bogdanm 85:024bf7f99721 72 *(.ARM.extab* .gnu.linkonce.armextab.*)
bogdanm 85:024bf7f99721 73 } > FLASH
bogdanm 85:024bf7f99721 74
bogdanm 85:024bf7f99721 75 __exidx_start = .;
bogdanm 85:024bf7f99721 76 .ARM.exidx :
bogdanm 85:024bf7f99721 77 {
bogdanm 85:024bf7f99721 78 *(.ARM.exidx* .gnu.linkonce.armexidx.*)
bogdanm 85:024bf7f99721 79 } > FLASH
bogdanm 85:024bf7f99721 80 __exidx_end = .;
bogdanm 85:024bf7f99721 81
bogdanm 85:024bf7f99721 82 __etext = .;
bogdanm 85:024bf7f99721 83
bogdanm 85:024bf7f99721 84 .data : AT (__etext)
bogdanm 85:024bf7f99721 85 {
bogdanm 85:024bf7f99721 86 __data_start__ = .;
bogdanm 85:024bf7f99721 87 Image$$RW_IRAM1$$Base = .;
bogdanm 85:024bf7f99721 88 *(vtable)
bogdanm 85:024bf7f99721 89 *(.data*)
bogdanm 85:024bf7f99721 90
bogdanm 85:024bf7f99721 91 . = ALIGN(4);
bogdanm 85:024bf7f99721 92 /* preinit data */
bogdanm 85:024bf7f99721 93 PROVIDE (__preinit_array_start = .);
bogdanm 85:024bf7f99721 94 KEEP(*(.preinit_array))
bogdanm 85:024bf7f99721 95 PROVIDE (__preinit_array_end = .);
bogdanm 85:024bf7f99721 96
bogdanm 85:024bf7f99721 97 . = ALIGN(4);
bogdanm 85:024bf7f99721 98 /* init data */
bogdanm 85:024bf7f99721 99 PROVIDE (__init_array_start = .);
bogdanm 85:024bf7f99721 100 KEEP(*(SORT(.init_array.*)))
bogdanm 85:024bf7f99721 101 KEEP(*(.init_array))
bogdanm 85:024bf7f99721 102 PROVIDE (__init_array_end = .);
bogdanm 85:024bf7f99721 103
bogdanm 85:024bf7f99721 104
bogdanm 85:024bf7f99721 105 . = ALIGN(4);
bogdanm 85:024bf7f99721 106 /* finit data */
bogdanm 85:024bf7f99721 107 PROVIDE (__fini_array_start = .);
bogdanm 85:024bf7f99721 108 KEEP(*(SORT(.fini_array.*)))
bogdanm 85:024bf7f99721 109 KEEP(*(.fini_array))
bogdanm 85:024bf7f99721 110 PROVIDE (__fini_array_end = .);
bogdanm 85:024bf7f99721 111
bogdanm 85:024bf7f99721 112 . = ALIGN(4);
bogdanm 85:024bf7f99721 113 /* All data end */
bogdanm 85:024bf7f99721 114 __data_end__ = .;
bogdanm 85:024bf7f99721 115
bogdanm 85:024bf7f99721 116 } > RAM
bogdanm 85:024bf7f99721 117
bogdanm 85:024bf7f99721 118
bogdanm 85:024bf7f99721 119 .bss :
bogdanm 85:024bf7f99721 120 {
bogdanm 85:024bf7f99721 121 __bss_start__ = .;
bogdanm 85:024bf7f99721 122 *(.bss*)
bogdanm 85:024bf7f99721 123 *(COMMON)
bogdanm 85:024bf7f99721 124 __bss_end__ = .;
bogdanm 85:024bf7f99721 125 Image$$RW_IRAM1$$ZI$$Limit = . ;
bogdanm 85:024bf7f99721 126 } > RAM
bogdanm 85:024bf7f99721 127
bogdanm 85:024bf7f99721 128
bogdanm 85:024bf7f99721 129 .heap :
bogdanm 85:024bf7f99721 130 {
bogdanm 85:024bf7f99721 131 __end__ = .;
bogdanm 85:024bf7f99721 132 end = __end__;
bogdanm 85:024bf7f99721 133 *(.heap*)
bogdanm 85:024bf7f99721 134 __HeapLimit = .;
bogdanm 85:024bf7f99721 135 } > RAM
bogdanm 85:024bf7f99721 136
bogdanm 85:024bf7f99721 137 /* .stack_dummy section doesn't contains any symbols. It is only
bogdanm 85:024bf7f99721 138 * used for linker to calculate size of stack sections, and assign
bogdanm 85:024bf7f99721 139 * values to stack symbols later */
bogdanm 85:024bf7f99721 140 .stack_dummy :
bogdanm 85:024bf7f99721 141 {
bogdanm 85:024bf7f99721 142 *(.stack)
bogdanm 85:024bf7f99721 143 } > RAM
bogdanm 85:024bf7f99721 144
bogdanm 85:024bf7f99721 145 /* Set stack top to end of RAM, and stack limit move down by
bogdanm 85:024bf7f99721 146 * size of stack_dummy section */
bogdanm 85:024bf7f99721 147 __StackTop = ORIGIN(RAM) + LENGTH(RAM);
bogdanm 85:024bf7f99721 148 __StackLimit = __StackTop - SIZEOF(.stack_dummy);
bogdanm 85:024bf7f99721 149 PROVIDE(__stack = __StackTop);
bogdanm 85:024bf7f99721 150
bogdanm 85:024bf7f99721 151 /* Check if data + heap + stack exceeds RAM limit */
bogdanm 85:024bf7f99721 152 ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
bogdanm 85:024bf7f99721 153
bogdanm 85:024bf7f99721 154
bogdanm 85:024bf7f99721 155 /* Code can explicitly ask for data to be
bogdanm 85:024bf7f99721 156 placed in these higher RAM banks where
bogdanm 85:024bf7f99721 157 they will be left uninitialized.
bogdanm 85:024bf7f99721 158 */
bogdanm 85:024bf7f99721 159 .AHBSRAM0 (NOLOAD):
bogdanm 85:024bf7f99721 160 {
bogdanm 85:024bf7f99721 161 Image$$RW_IRAM2$$Base = . ;
bogdanm 85:024bf7f99721 162 *(AHBSRAM0)
bogdanm 85:024bf7f99721 163 Image$$RW_IRAM2$$ZI$$Limit = .;
bogdanm 85:024bf7f99721 164 } > USB_RAM
bogdanm 85:024bf7f99721 165
bogdanm 85:024bf7f99721 166 .AHBSRAM1 (NOLOAD):
bogdanm 85:024bf7f99721 167 {
bogdanm 85:024bf7f99721 168 Image$$RW_IRAM3$$Base = . ;
bogdanm 85:024bf7f99721 169 *(AHBSRAM1)
bogdanm 85:024bf7f99721 170 Image$$RW_IRAM3$$ZI$$Limit = .;
bogdanm 85:024bf7f99721 171 } > ETH_RAM
bogdanm 85:024bf7f99721 172 }