Re: Simple question about powerpc asm.

[Wolfgang Denk <wd@denx.de>]

Dear Valentine,

In message <4A61A48D.8060601@ru.mvista.com> you wrote:
>
> PowerPC instructions are 32-bit long. So, there are only 16 bits 
> available within the instruction for constant values. Since address can 
> be up to 64 bits, we have to load it a piece at a time. The "@" within 
> the assembler instruct it to give a specially-processed form of a symbol 
> value:
> 
> @highest -- refers to bits 48-63 of a constant
> @higher -- refers to bits 32-47 of a constant
> @h -- refers to bits 16-31 of a constant
> @l -- refers to bits 0-15 of a constant

Actually these bit numbers are wrong, as bit 0 is the MSB for PowerPC
;-)

Best regards,

Wolfgang Denk

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