Getting started with NEON

Hello,

I have a few issues getting started with the neon-core on my A8-3552. I use CCS Version: 6.0.1.00040 ; Compiler: TI 5.1.6

I am trying to get a basic add-function running. The VADD command works

VADD.I32 d0, d0, d1

but the VLD1 command stops the programm

VLD1.32 {d2}, [r1]

.

First I initialize the neon with the code from the TI-Wiki:

neoninit:
	MRC p15, #0, r1, c1, c0, #2 ; r1 = Access Control Register
	ORR r1, r1, #(0xf << 20) ; enable full access for p10,11
	MCR p15, #0, r1, c1, c0, #2 ; Access Control Register = r1
	MOV r1, #0
	MCR p15, #0, r1, c7, c5, #4 ; flush prefetch buffer because of FMXR below
	; and CP 10 & 11 were only just enabled
	; Enable VFP itself
	MOV r0,#0x40000000
	FMXR FPEXC, r0 ; FPEXC = r0

(This part must work because if i don't include it, even the VADD does not work.)

Then I call the add-function:

neonadd:
	VLD1.32 {d0}, [r0]
	VLD1.32 {d1}, [r1]
	VADD.I32 d0, d0, d1
	VST1.16  {d0},[r0]
	BX	LR

After that I send the result over UART. Here is the complete Code:

neon.c :

#include "uartStdio.h"
#include "stdint.h"

extern uint32_t neonadd(uint32_t a, uint32_t b);
extern void neoninit();


void neontest(){
	UARTprintf("Neontest\n");
	uint32_t B = 1;
	uint32_t C = 2;
	uint32_t D = 0;

	UARTprintf("NEONADD\n");
	neoninit();
	UARTprintf("neon initialized\n");
	D = neonadd(B,C);
	UARTprintf("Result: %d\n", D);
}

neonadd.asm:

	.global neonadd
	.global neoninit


neonadd:
	VLD1.32 {d0}, [r0]
	VLD1.32 {d1}, [r1]
	VADD.I32 d0, d0, d1
	VST1.16  {d0},[r0]
	BX	LR



neoninit:
	MRC p15, #0, r1, c1, c0, #2 ; r1 = Access Control Register
	ORR r1, r1, #(0xf << 20) ; enable full access for p10,11
	MCR p15, #0, r1, c1, c0, #2 ; Access Control Register = r1
	MOV r1, #0
	MCR p15, #0, r1, c7, c5, #4 ; flush prefetch buffer because of FMXR below
	; and CP 10 & 11 were only just enabled
	; Enable VFP itself
	MOV r0,#0x40000000
	FMXR FPEXC, r0 ; FPEXC = r0

I am new to assembly and only understand the basics so please be patient with me. 

 Thanks a lot for your help in advance.

Regards,

Andi