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How many ways to set a register 32 bit value?

Robert over 10 years ago

Hi,

I find Arm has 16 bit immediate value load to register instruction, but it has no instruction to load 32 bit value to register. I am new to asm level programming. How many ways to load a register to a desired value for an Arm CPU?

thanks,

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0 Peter Harris over 10 years ago in reply to Niall Cooling

This blog may be useful:
How to Load Constants in Assembly for ARM Architecture
In particular it shows how to use MOVW and MOVT to load two 16-bit constants from the instruction steam, which is often a better solution that a literal load (which pollutes the D-Cache).
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0 Peter Harris over 10 years ago in reply to Niall Cooling

This blog may be useful:
How to Load Constants in Assembly for ARM Architecture
In particular it shows how to use MOVW and MOVT to load two 16-bit constants from the instruction steam, which is often a better solution that a literal load (which pollutes the D-Cache).
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