change to official LD/Startup(from embedded builder C Standard Project)

ld/gd_e230f4_gcc.ld

@@ -1,56 +1,127 @@
+/* memory map */
+MEMORY
+{
+  FLASH (rx)      : ORIGIN = 0x08000000, LENGTH = 16K
+  RAM (xrw)       : ORIGIN = 0x20000000, LENGTH = 4K
+}
 
 ENTRY(Reset_Handler)
 
-MEMORY {
-    FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 16K
-    RAM (xrw)  : ORIGIN = 0x20000000, LENGTH =  4K
-}
+SECTIONS
+{
+  __stack_size = DEFINED(__stack_size) ? __stack_size : 2K;
 
-_estack = ORIGIN(RAM) + LENGTH(RAM);
+/* ISR vectors */
+  .vectors :
+  {
+    . = ALIGN(4);
+    KEEP(*(.vectors))
+    . = ALIGN(4);
+    __Vectors_End = .;
+    __Vectors_Size = __Vectors_End - __gVectors;
+  } >FLASH
 
-SECTIONS {
-    .isr_vector : {
-        . = ALIGN(4);
-        KEEP(*(.isr_vector))
-        . = ALIGN(4);
-    } >FLASH
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)
+    *(.text*)
+    *(.glue_7)
+    *(.glue_7t)
+    *(.eh_frame)
 
-    .text : {
-        . = ALIGN(4);
-        *(.text)
-        *(.text*)
-        *(.glue_7)      /* glue arm to thumb code */
-        *(.glue_7t)     /* glue thumb to arm code */
-        *(.eh_frame)
-
-        . = ALIGN(4);
-        _etext = .;     /* define a global symbols at end of code */
-    } >FLASH
-
-    .rodata : {
-        . = ALIGN(4);
-        *(.rodata)
-        *(.rodata*)
-        . = ALIGN(4);
-    } >FLASH
-
-    _sidata = LOADADDR(.data);
-
-    .data : {
-        . = ALIGN(4);
-        _sdata = .;
-        *(.data)
-        *(.data*)
-        . = ALIGN(4);
-        _edata = .;
-    } >RAM AT>FLASH
+    KEEP (*(.init))
+    KEEP (*(.fini))
 
     . = ALIGN(4);
-    .bss : {
-        _sbss = .;
-        *(.bss)
-        *(.bss*)
-        . = ALIGN(4);
-        _ebss = .;
-    } >RAM
-}
+    /* the symbol <20><>_etext<78><74> will be defined at the end of code section */
+    _etext = .;
+  } >FLASH
+
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)
+    *(.rodata*)
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab :
+  {
+     *(.ARM.extab* .gnu.linkonce.armextab.*)
+  } >FLASH
+
+  .ARM : {
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+  } >FLASH
+
+  .ARM.attributes : { *(.ARM.attributes) } > FLASH
+
+  .preinit_array :
+  {
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+  } >FLASH
+
+  .init_array :
+  {
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+  } >FLASH
+
+  .fini_array :
+  {
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(.fini_array*))
+    KEEP (*(SORT(.fini_array.*)))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+  } >FLASH
+
+  /* provide some necessary symbols for startup file to initialize data */
+  _sidata = LOADADDR(.data);
+  .data :
+  {
+    . = ALIGN(4);
+    /* the symbol <20><>_sdata<74><61> will be defined at the data section end start */
+    _sdata = .;
+    *(.data)
+    *(.data*)
+    . = ALIGN(4);
+    /* the symbol <20><>_edata<74><61> will be defined at the data section end */
+    _edata = .;
+  } >RAM AT> FLASH
+
+  . = ALIGN(4);
+  .bss :
+  {
+    /* the symbol <20><>_sbss<73><73> will be defined at the bss section start */
+    _sbss = .;
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+    . = ALIGN(4);
+    /* the symbol <20><>_ebss<73><73> will be defined at the bss section end */
+    _ebss = .;
+    __bss_end__ = _ebss;
+  } >RAM
+
+  . = ALIGN(8);
+  PROVIDE ( end = _ebss );
+  PROVIDE ( _end = _ebss );
+
+  .stack ORIGIN(RAM) + LENGTH(RAM) - __stack_size :
+  {
+    PROVIDE( _heap_end = . );
+    . = __stack_size;
+    PROVIDE( _sp = . );
+  } >RAM AT>RAM
+}
+
+ /* input sections */
+GROUP(libgcc.a libc.a libm.a libnosys.a)