LPC2148 Startup File for Realview

I am presently working on a port from the CARM Compiler to the Realview. The startup.s file provided in the Keil folder for the realview does not work entirely on my project for the LPC2148. When I run it, it seems to always hit the Data Abort Handler.

Below is the previous CARM compiler startup file stack configuration

/*
// <h> Stack Configuration (Stack Sizes in Bytes)
// <o0> Undefined Mode <0x0-0xFFFFFFFF:4>
// <o1> Supervisor Mode <0x0-0xFFFFFFFF:4>
// <o2> Abort Mode <0x0-0xFFFFFFFF:4>
// <o3> Fast Interrupt Mode <0x0-0xFFFFFFFF:4>
// <o4> Interrupt Mode <0x0-0xFFFFFFFF:4>
// <o5> User/System Mode <0x0-0xFFFFFFFF:4>
// </h>
*/ UND_Stack_Size EQU 0x00000004 SVC_Stack_Size EQU 0x00000004 ABT_Stack_Size EQU 0x00000004 FIQ_Stack_Size EQU 0x00000004 IRQ_Stack_Size EQU 0x00000080 USR_Stack_Size EQU 0x00000400

AREA STACK, DATA, READWRITE, ALIGN=2 DS (USR_Stack_Size+3)&~3 ; Stack for User/System Mode DS (SVC_Stack_Size+3)&~3 ; Stack for Supervisor Mode DS (IRQ_Stack_Size+3)&~3 ; Stack for Interrupt Mode DS (FIQ_Stack_Size+3)&~3 ; Stack for Fast Interrupt Mode DS (ABT_Stack_Size+3)&~3 ; Stack for Abort Mode DS (UND_Stack_Size+3)&~3 ; Stack for Undefined Mode
Top_Stack:

Tbe new configuration is

;// <h> Stack Configuration (Stack Sizes in Bytes)
;// <o0> Undefined Mode <0x0-0xFFFFFFFF:8>
;// <o1> Supervisor Mode <0x0-0xFFFFFFFF:8>
;// <o2> Abort Mode <0x0-0xFFFFFFFF:8>
;// <o3> Fast Interrupt Mode <0x0-0xFFFFFFFF:8>
;// <o4> Interrupt Mode <0x0-0xFFFFFFFF:8>
;// <o5> User/System Mode <0x0-0xFFFFFFFF:8>
;// </h>

UND_Stack_Size EQU 0x00000000
SVC_Stack_Size EQU 0x00000008
ABT_Stack_Size EQU 0x00000000
FIQ_Stack_Size EQU 0x00000000
IRQ_Stack_Size EQU 0x00000080
USR_Stack_Size EQU 0x00000400

Stack_Size EQU (UND_Stack_Size + SVC_Stack_Size + ABT_Stack_Size + \
FIQ_Stack_Size + IRQ_Stack_Size + USR_Stack_Size)

AREA STACK, NOINIT, READWRITE, ALIGN=3
Stack_Mem SPACE Stack_Size
Stack_Top EQU Stack_Mem + Stack_Size

;// <h> Heap Configuration
;// <o> Heap Size (in Bytes) <0x0-0xFFFFFFFF>
;// </h>

Heap_Size EQU 0x00000FA0 ; 4k heap size
AREA HEAP, NOINIT, READWRITE, ALIGN=3
Heap_Mem SPACE Heap_Size

; User Initial Stack & Heap AREA |.text|, CODE, READONLY

IMPORT __use_two_region_memory EXPORT __user_initial_stackheap
__user_initial_stackheap

LDR R0, = Heap_Mem LDR R1, =(Stack_Mem + USR_Stack_Size) LDR R2, = (Heap_Mem + Heap_Size) LDR R3, = Stack_Mem BX LR

Any suggestions on what may need to be changed?

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