Arm VERSION 1.2 Manual de usuario descargar pdf (Pagina 19)

100

101

Writing ARM and Thumb Assembly Language

Single register load and store instructions

These instructions load or store the value of a single register from or to memory. They

can load or store a 32-bit word or an 8-bit unsigned byte. In ARM architecture v4 and

above they can also load or store a 16-bit unsigned halfword, or load and sign extend a

16-bit halfword or an 8-bit byte.

Multiple register load and store instructions

These instructions load or store any subset of the general-purpose registers from or to

memory. Refer to Load and store multiple register instructions on page 2-39 for a

detailed description of these instructions.

Status register access instructions

These instructions move the contents of the CPSR or an SPSR to or from a

general-purpose register.

Semaphore instructions

These instructions load and alter a memory semaphore.

Coprocessor instructions

These instructions support a general way to extend the ARM architecture.

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Arm VERSION 1.2 Manual de usuario Pagina 19

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