ARM R4 Manuale Utente

Pagina di 456
Programmer’s Model 
ARM DDI 0363E
Copyright © 2009 ARM Limited. All rights reserved.
2-28
ID013010
Non-Confidential, Unrestricted Access
2.10
Unaligned and mixed-endian data access support
The processor supports unaligned memory accesses. Unaligned memory accesses was 
introduced with ARMv6. Bit [22] of c1, Control Register is always 1.
The processor supports byte-invariant big-endianness BE-8 and little-endianness LE. The 
processor does not support word-invariant big-endianness BE-32. Bit [7] of c1, Control Register 
is always 0.
For more information on unaligned and mixed-endian data access support, see the ARM 
Architecture Reference Manual
.