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TARGET_TEENSY3_1/TOOLCHAIN_GCC_ARM/MK20DX256.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 156:ff21514d8981 1 /*
AnnaBridge 156:ff21514d8981 2 * K20DX256 ARM GCC linker script file
AnnaBridge 156:ff21514d8981 3 */
AnnaBridge 156:ff21514d8981 4
AnnaBridge 156:ff21514d8981 5 MEMORY
AnnaBridge 156:ff21514d8981 6 {
AnnaBridge 156:ff21514d8981 7 VECTORS (rx) : ORIGIN = 0x00000000, LENGTH = 0x00000400
AnnaBridge 156:ff21514d8981 8 FLASH_PROTECTION (rx) : ORIGIN = 0x00000400, LENGTH = 0x00000010
AnnaBridge 156:ff21514d8981 9 FLASH (rx) : ORIGIN = 0x00000410, LENGTH = 256K - 0x00000410
AnnaBridge 156:ff21514d8981 10 RAM (rwx) : ORIGIN = 0x1FFF81C0, LENGTH = 64K - 0x1C0
AnnaBridge 156:ff21514d8981 11 }
AnnaBridge 156:ff21514d8981 12
AnnaBridge 156:ff21514d8981 13 /* Linker script to place sections and symbol values. Should be used together
AnnaBridge 156:ff21514d8981 14 * with other linker script that defines memory regions FLASH and RAM.
AnnaBridge 156:ff21514d8981 15 * It references following symbols, which must be defined in code:
AnnaBridge 156:ff21514d8981 16 * _reset_init : Entry of reset handler
AnnaBridge 156:ff21514d8981 17 *
AnnaBridge 156:ff21514d8981 18 * It defines following symbols, which code can use without definition:
AnnaBridge 156:ff21514d8981 19 * __exidx_start
AnnaBridge 156:ff21514d8981 20 * __exidx_end
AnnaBridge 156:ff21514d8981 21 * __etext
AnnaBridge 156:ff21514d8981 22 * __data_start__
AnnaBridge 156:ff21514d8981 23 * __preinit_array_start
AnnaBridge 156:ff21514d8981 24 * __preinit_array_end
AnnaBridge 156:ff21514d8981 25 * __init_array_start
AnnaBridge 156:ff21514d8981 26 * __init_array_end
AnnaBridge 156:ff21514d8981 27 * __fini_array_start
AnnaBridge 156:ff21514d8981 28 * __fini_array_end
AnnaBridge 156:ff21514d8981 29 * __data_end__
AnnaBridge 156:ff21514d8981 30 * __bss_start__
AnnaBridge 156:ff21514d8981 31 * __bss_end__
AnnaBridge 156:ff21514d8981 32 * __end__
AnnaBridge 156:ff21514d8981 33 * end
AnnaBridge 156:ff21514d8981 34 * __HeapLimit
AnnaBridge 156:ff21514d8981 35 * __StackLimit
AnnaBridge 156:ff21514d8981 36 * __StackTop
AnnaBridge 156:ff21514d8981 37 * __stack
AnnaBridge 156:ff21514d8981 38 */
AnnaBridge 156:ff21514d8981 39 ENTRY(Reset_Handler)
AnnaBridge 156:ff21514d8981 40
AnnaBridge 156:ff21514d8981 41 SECTIONS
AnnaBridge 156:ff21514d8981 42 {
AnnaBridge 156:ff21514d8981 43 .isr_vector :
AnnaBridge 156:ff21514d8981 44 {
AnnaBridge 156:ff21514d8981 45 . = 0;
AnnaBridge 156:ff21514d8981 46 __isr_vector = .;
AnnaBridge 156:ff21514d8981 47 KEEP(*(.isr_vector))
AnnaBridge 156:ff21514d8981 48 *(.text.Reset_Handler)
AnnaBridge 156:ff21514d8981 49 *(.text.SystemInit)
AnnaBridge 171:3a7713b1edbc 50 . = ALIGN(8);
AnnaBridge 156:ff21514d8981 51 } > VECTORS
AnnaBridge 156:ff21514d8981 52
AnnaBridge 156:ff21514d8981 53 .flash_protect :
AnnaBridge 156:ff21514d8981 54 {
AnnaBridge 156:ff21514d8981 55 KEEP(*(.kinetis_flash_config_field))
AnnaBridge 171:3a7713b1edbc 56 . = ALIGN(8);
AnnaBridge 156:ff21514d8981 57 } > FLASH_PROTECTION
AnnaBridge 156:ff21514d8981 58
AnnaBridge 156:ff21514d8981 59 .text :
AnnaBridge 156:ff21514d8981 60 {
AnnaBridge 156:ff21514d8981 61 *(.text*)
AnnaBridge 156:ff21514d8981 62
AnnaBridge 156:ff21514d8981 63 KEEP(*(.init))
AnnaBridge 156:ff21514d8981 64 KEEP(*(.fini))
AnnaBridge 156:ff21514d8981 65
AnnaBridge 156:ff21514d8981 66 /* .ctors */
AnnaBridge 156:ff21514d8981 67 *crtbegin.o(.ctors)
AnnaBridge 156:ff21514d8981 68 *crtbegin?.o(.ctors)
AnnaBridge 156:ff21514d8981 69 *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
AnnaBridge 156:ff21514d8981 70 *(SORT(.ctors.*))
AnnaBridge 156:ff21514d8981 71 *(.ctors)
AnnaBridge 156:ff21514d8981 72
AnnaBridge 156:ff21514d8981 73 /* .dtors */
AnnaBridge 156:ff21514d8981 74 *crtbegin.o(.dtors)
AnnaBridge 156:ff21514d8981 75 *crtbegin?.o(.dtors)
AnnaBridge 156:ff21514d8981 76 *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
AnnaBridge 156:ff21514d8981 77 *(SORT(.dtors.*))
AnnaBridge 156:ff21514d8981 78 *(.dtors)
AnnaBridge 156:ff21514d8981 79
AnnaBridge 156:ff21514d8981 80 *(.rodata*)
AnnaBridge 156:ff21514d8981 81
AnnaBridge 156:ff21514d8981 82 KEEP(*(.eh_frame*))
AnnaBridge 156:ff21514d8981 83 } > FLASH
AnnaBridge 156:ff21514d8981 84
AnnaBridge 156:ff21514d8981 85 .ARM.extab :
AnnaBridge 156:ff21514d8981 86 {
AnnaBridge 156:ff21514d8981 87 *(.ARM.extab* .gnu.linkonce.armextab.*)
AnnaBridge 156:ff21514d8981 88 } > FLASH
AnnaBridge 156:ff21514d8981 89
AnnaBridge 156:ff21514d8981 90 __exidx_start = .;
AnnaBridge 156:ff21514d8981 91 .ARM.exidx :
AnnaBridge 156:ff21514d8981 92 {
AnnaBridge 156:ff21514d8981 93 *(.ARM.exidx* .gnu.linkonce.armexidx.*)
AnnaBridge 156:ff21514d8981 94 } > FLASH
AnnaBridge 156:ff21514d8981 95 __exidx_end = .;
AnnaBridge 156:ff21514d8981 96
AnnaBridge 156:ff21514d8981 97 __etext = .;
AnnaBridge 156:ff21514d8981 98
AnnaBridge 156:ff21514d8981 99 .data : AT (__etext)
AnnaBridge 156:ff21514d8981 100 {
AnnaBridge 156:ff21514d8981 101 __data_start__ = .;
AnnaBridge 156:ff21514d8981 102 *(vtable)
AnnaBridge 156:ff21514d8981 103 *(.data*)
AnnaBridge 156:ff21514d8981 104
AnnaBridge 171:3a7713b1edbc 105 . = ALIGN(8);
AnnaBridge 156:ff21514d8981 106 /* preinit data */
AnnaBridge 156:ff21514d8981 107 PROVIDE_HIDDEN (__preinit_array_start = .);
AnnaBridge 156:ff21514d8981 108 KEEP(*(.preinit_array))
AnnaBridge 156:ff21514d8981 109 PROVIDE_HIDDEN (__preinit_array_end = .);
AnnaBridge 156:ff21514d8981 110
AnnaBridge 171:3a7713b1edbc 111 . = ALIGN(8);
AnnaBridge 156:ff21514d8981 112 /* init data */
AnnaBridge 156:ff21514d8981 113 PROVIDE_HIDDEN (__init_array_start = .);
AnnaBridge 156:ff21514d8981 114 KEEP(*(SORT(.init_array.*)))
AnnaBridge 156:ff21514d8981 115 KEEP(*(.init_array))
AnnaBridge 156:ff21514d8981 116 PROVIDE_HIDDEN (__init_array_end = .);
AnnaBridge 156:ff21514d8981 117
AnnaBridge 156:ff21514d8981 118
AnnaBridge 171:3a7713b1edbc 119 . = ALIGN(8);
AnnaBridge 156:ff21514d8981 120 /* finit data */
AnnaBridge 156:ff21514d8981 121 PROVIDE_HIDDEN (__fini_array_start = .);
AnnaBridge 156:ff21514d8981 122 KEEP(*(SORT(.fini_array.*)))
AnnaBridge 156:ff21514d8981 123 KEEP(*(.fini_array))
AnnaBridge 156:ff21514d8981 124 PROVIDE_HIDDEN (__fini_array_end = .);
AnnaBridge 156:ff21514d8981 125
AnnaBridge 171:3a7713b1edbc 126 . = ALIGN(8);
AnnaBridge 156:ff21514d8981 127 /* All data end */
AnnaBridge 156:ff21514d8981 128 __data_end__ = .;
AnnaBridge 156:ff21514d8981 129
AnnaBridge 156:ff21514d8981 130 } > RAM
AnnaBridge 156:ff21514d8981 131
AnnaBridge 156:ff21514d8981 132 .bss :
AnnaBridge 156:ff21514d8981 133 {
AnnaBridge 156:ff21514d8981 134 __bss_start__ = .;
AnnaBridge 156:ff21514d8981 135 *(.bss*)
AnnaBridge 156:ff21514d8981 136 *(COMMON)
AnnaBridge 156:ff21514d8981 137 __bss_end__ = .;
AnnaBridge 156:ff21514d8981 138 } > RAM
AnnaBridge 156:ff21514d8981 139
AnnaBridge 156:ff21514d8981 140 .heap :
AnnaBridge 156:ff21514d8981 141 {
AnnaBridge 156:ff21514d8981 142 __end__ = .;
AnnaBridge 156:ff21514d8981 143 end = __end__;
AnnaBridge 156:ff21514d8981 144 *(.heap*)
AnnaBridge 156:ff21514d8981 145 __HeapLimit = .;
AnnaBridge 156:ff21514d8981 146 } > RAM
AnnaBridge 156:ff21514d8981 147
AnnaBridge 156:ff21514d8981 148 /* .stack_dummy section doesn't contains any symbols. It is only
AnnaBridge 156:ff21514d8981 149 * used for linker to calculate size of stack sections, and assign
AnnaBridge 156:ff21514d8981 150 * values to stack symbols later */
AnnaBridge 156:ff21514d8981 151 .stack_dummy :
AnnaBridge 156:ff21514d8981 152 {
AnnaBridge 156:ff21514d8981 153 *(.stack)
AnnaBridge 156:ff21514d8981 154 } > RAM
AnnaBridge 156:ff21514d8981 155
AnnaBridge 156:ff21514d8981 156 /* Set stack top to end of RAM, and stack limit move down by
AnnaBridge 156:ff21514d8981 157 * size of stack_dummy section */
AnnaBridge 156:ff21514d8981 158 __StackTop = ORIGIN(RAM) + LENGTH(RAM);
AnnaBridge 156:ff21514d8981 159 __StackLimit = __StackTop - SIZEOF(.stack_dummy);
AnnaBridge 156:ff21514d8981 160 PROVIDE(__stack = __StackTop);
AnnaBridge 156:ff21514d8981 161
AnnaBridge 156:ff21514d8981 162 /* Check if data + heap + stack exceeds RAM limit */
AnnaBridge 156:ff21514d8981 163 ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
AnnaBridge 156:ff21514d8981 164 }