OS21, ARM

Register context

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Register context

3.1

Registers overview

The following registers are saved as part of each task's context.

On all platforms:

●

R0 to R12

●

R13 (stack pointer)

●

R14 (link register)

●

R15 (PC)

●

CPSR (status register)

On platforms with a VFP present:

●

F0 to F31

●

FPINST2, FPINST, FPEXC, FPSCR (control and status registers)

On platforms with interrupt levels:

●

priority mask register