S

libraries/STM32F4xx_HAL/CMSIS/Device/ST/STM32F4xx/Source/Templates/gcc/startup_stm32f407xx.s

@@ -62,67 +62,40 @@ Reset_Handler:
   ldr   sp, =_estack     /* set stack pointer */
 
 /* Copy the data segment initializers from flash to SRAM */  
-  movs  r1, #0
-  b  LoopCopyDataInit
+  ldr r0, =_sdata
+  ldr r1, =_edata
+  ldr r2, =_sidata
+  movs r3, #0
+  b LoopCopyDataInit
 
 CopyDataInit:
-  ldr  r3, =_sidata
-  ldr  r3, [r3, r1]
-  str  r3, [r0, r1]
-  adds  r1, r1, #4
-    
-LoopCopyDataInit:
-  ldr  r0, =_sdata
-  ldr  r3, =_edata
-  adds  r2, r0, r1
-  cmp  r2, r3
-  bcc  CopyDataInit
-
-/* Copy from flash to CCMRAM */
-  ldr r0, =_sccmdata
-  ldr r1, =_eccmdata
-  ldr r2, =_siccmdata
-  movs r3, #0
-  b LoopCopyCcmInit
-CopyCcmInit:
   ldr r4, [r2, r3]
   str r4, [r0, r3]
   adds r3, r3, #4
-LoopCopyCcmInit:
+
+LoopCopyDataInit:
   adds r4, r0, r3
   cmp r4, r1
-  bcc CopyCcmInit
-/* End of copy to CCMRAM */
+  bcc CopyDataInit
+  
+/* Zero fill the bss segment. */
+  ldr r2, =_sbss
+  ldr r4, =_ebss
+  movs r3, #0
+  b LoopFillZerobss
 
-  ldr  r2, =_sccm_bss
-  b  LoopFillZeroCcm
-/* Zero fill the ccm bss segment. */  
-FillZeroCcm:
-  movs  r3, #0
-  str  r3, [r2], #4
-    
-LoopFillZeroCcm:
-  ldr  r3, = _eccm_bss
-  cmp  r2, r3
-  bcc  FillZeroCcm
-/* End of zero fill to CCMRAM */
-
-  ldr  r2, =_sbss
-  b  LoopFillZerobss
-/* Zero fill the bss segment. */  
 FillZerobss:
-  movs  r3, #0
-  str  r3, [r2], #4
-    
+  str  r3, [r2]
+  adds r2, r2, #4
+
 LoopFillZerobss:
-  ldr  r3, = _ebss
-  cmp  r2, r3
-  bcc  FillZerobss
+  cmp r2, r4
+  bcc FillZerobss
 
 /* Call the clock system intitialization function.*/
   bl  SystemInit   
 /* Call static constructors */
-/*     bl __libc_init_array */
+    bl __libc_init_array
 /* Call the application's entry point.*/
   bl  entry
   bx  lr