Diff: TARGET_EFM32WG_STK3800/TOOLCHAIN_GCC_ARM/efm32wg.ld

Revision:

98:8ab26030e058

Child:

113:f141b2784e32

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TARGET_EFM32WG_STK3800/TOOLCHAIN_GCC_ARM/efm32wg.ld	Wed Apr 29 10:16:23 2015 +0100
@@ -0,0 +1,160 @@
+/* Linker script for Silicon Labs EFM32WG devices */
+/*                                                                  */
+/* This file is subject to the license terms as defined in ARM's    */
+/* CMSIS END USER LICENSE AGREEMENT.pdf, governing the use of       */
+/* Example Code.                                                    */
+/*                                                                  */
+/* Silicon Laboratories, Inc. 2014                                  */
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 262144
+  RAM (rwx)  : ORIGIN = 0x20000000, LENGTH = 32768
+}
+/* MBED: mbed needs to be able to dynamically set the interrupt vector table.
+ * We make room for the table at the very beginning of RAM, i.e. at
+ * 0x20000000. We need (16+39) * sizeof(uint32_t) = 220 bytes for EFM32WG */
+__vector_size = 0xE0;
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ *   Reset_Handler : Entry of reset handler
+ * 
+ * It defines following symbols, which code can use without definition:
+ *   __exidx_start
+ *   __exidx_end
+ *   __etext
+ *   __data_start__
+ *   __preinit_array_start
+ *   __preinit_array_end
+ *   __init_array_start
+ *   __init_array_end
+ *   __fini_array_start
+ *   __fini_array_end
+ *   __data_end__
+ *   __bss_start__
+ *   __bss_end__
+ *   __end__
+ *   end
+ *   __HeapLimit
+ *   __StackLimit
+ *   __StackTop
+ *   __stack
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+  .text :
+  {
+    KEEP(*(.isr_vector))
+    *(.text*)
+
+    KEEP(*(.init))
+    KEEP(*(.fini))
+
+    /* .ctors */
+    *crtbegin.o(.ctors)
+    *crtbegin?.o(.ctors)
+    *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+    *(SORT(.ctors.*))
+    *(.ctors)
+
+    /* .dtors */
+    *crtbegin.o(.dtors)
+    *crtbegin?.o(.dtors)
+    *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+    *(SORT(.dtors.*))
+    *(.dtors)
+
+    *(.rodata*)
+
+    KEEP(*(.eh_frame*))
+  } > FLASH
+
+  .ARM.extab : 
+  {
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+  } > FLASH
+
+  __exidx_start = .;
+  .ARM.exidx :
+  {
+    *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+  } > FLASH
+  __exidx_end = .;
+
+  __etext = .;
+  
+  .data : AT (__etext)
+  {
+    __data_start__ = .;
+    *("dma")
+    PROVIDE( __start_vector_table__ = .);
+  	. += __vector_size;
+  	PROVIDE( __end_vector_table__ = .);
+    *(vtable)
+    *(.data*)
+    . = ALIGN (4);
+    *(.ram)
+
+    . = ALIGN(4);
+    /* preinit data */
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP(*(.preinit_array))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+
+    . = ALIGN(4);
+    /* init data */
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP(*(SORT(.init_array.*)))
+    KEEP(*(.init_array))
+    PROVIDE_HIDDEN (__init_array_end = .);
+
+    . = ALIGN(4);
+    /* finit data */
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP(*(SORT(.fini_array.*)))
+    KEEP(*(.fini_array))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+
+    . = ALIGN(4);
+    /* All data end */
+    __data_end__ = .;
+
+  } > RAM
+
+  .bss :
+  {
+    __bss_start__ = .;
+    *(.bss*)
+    *(COMMON)
+    __bss_end__ = .;
+  } > RAM
+
+  .heap :
+  {
+    __end__ = .;
+    end = __end__;
+    _end = __end__;
+    *(.heap*)
+    __HeapLimit = .;
+  } > RAM
+
+  /* .stack_dummy section doesn't contains any symbols. It is only
+   * used for linker to calculate size of stack sections, and assign
+   * values to stack symbols later */
+  .stack_dummy :
+  {
+    *(.stack)
+  } > RAM
+
+  /* Set stack top to end of RAM, and stack limit move down by
+   * size of stack_dummy section */
+  __StackTop = ORIGIN(RAM) + LENGTH(RAM);
+  __StackLimit = __StackTop - SIZEOF(.stack_dummy);
+  PROVIDE(__stack = __StackTop);
+
+  /* Check if data + heap + stack exceeds RAM limit */
+  ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}