STM32F407VE adaptations, tried to find initialization bug

hardfault/hardfault_prehandler.S

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+/* Preliminary Header: Author: Mario Huettel */
+
+.syntax unified
+.cpu cortex-m4
+.thumb
+.type HardFault_PreHandler, %function
+.global HardFault_PreHandler
+.type HardFault_PreHandler, %function
+HardFault_PreHandler:
+TST LR, #4 // Test bit 2. If active => PSP was used, else MSP
+ITE EQ
+MRSEQ R0, MSP // Bit not set => MSP as argument
+MRSNE R0, PSP // Bit set => PSP
+LDR R1, =HardFault_Handler
+BX R1
+
+//.weak HardFault_Handler
+//.thumb_set HardFault_Handler, HardFault_Handler_Default
+//HardFault_Handler_Default:
+//B HardFault_Handler_Default