How to enter USR mode from SVC mode?

Note: This was originally posted on 1st August 2011 at http://forums.arm.com I changed CPSR to 0x1D0(which means USR mode )in SVC mode in cortex-a8 platform(freescale imx51), but a perfetch_error occured...
How to enter USR mode from SVC mode?

Note: This was originally posted on 1st August 2011 at http://forums.arm.com I changed CPSR to 0x1D0(which means USR mode )in SVC mode in cortex-a8 platform(freescale imx51), but a perfetch_error occured...
"CPSIE I"on an ARMv7A not changing the I bit in the CPSR register in USR mode - why?

I'm using a CortexA8 and I can't seem to enable interrupts...! I'm using a "CPSIE I" instruction, I can see that the compiler (GCC) is not optimizing my code out... I have to manually stop the program...
"CPSIE I"on an ARMv7A not changing the I bit in the CPSR register in USR mode - why?

I'm using a CortexA8 and I can't seem to enable interrupts...! I'm using a "CPSIE I" instruction, I can see that the compiler (GCC) is not optimizing my code out... I have to manually stop the program...
BUG? Executing RESET Command through Source Code in uVision Debug Mode

Hi, I'm using MDK 5.24a with µVision V5.24.2.0 and I have a really confusing behaviour. When I'm in Debug Mode and stopped in a Breakpoint, I step into an other function. This function has several...