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Compiler flag -msoft-float in arch/powerpc/cpu/mpc83xx/config.mk

U-Boot Holger Brunck 3 participants 3 messages Mar 23, 2011

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Holger Brunck

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Hi all,
I am wondering why arch/powerpc/cpu/mpc83xx/config.mk sets -msoft-float for all ppc 83xx processors. This is valid e.g. for MPC8321 but e.g. the MPC8360 has a hardware floating point unit. Shouldn't the config.mk file distinguish between different 83xx processors to set this flag only for those which don't have a FPU?

Best regards
Holger Brunck

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Quoted 6 lines · Holger Brunck

Hi all,
I am wondering why arch/powerpc/cpu/mpc83xx/config.mk sets -msoft-float for all ppc 83xx processors. This is valid e.g. for MPC8321 but e.g. the MPC8360 has a hardware floating point unit. Shouldn't the config.mk file distinguish between different 83xx processors to set this flag only for those which don't have a FPU?

This has been discussed to death here before. The short answer is -msoft-float is correct. The long answer is in the list archives. The last major debate on the topic was a month or two ago.

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M?ns Rullg?rd
mans at mansr.com
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Dear =?iso-8859-1?Q?M=E5ns_Rullg=E5rd?=,

Quoted 9 lines · In message <[email protected]> you wrote:
Quoted 6 lines · Holger Brunck

Hi all,
I am wondering why arch/powerpc/cpu/mpc83xx/config.mk sets -msoft-float for all ppc 83xx processors. This is valid e.g. for MPC8321 but e.g. the MPC8360 has a hardware floating point unit. Shouldn't the config.mk file distinguish between different 83xx processors to set this flag only for those which don't have a FPU?

Quoted 3 lines

This has been discussed to death here before. The short answer is -msoft-float is correct. The long answer is in the list archives. The last major debate on the topic was a month or two ago.

For reference, see here:

http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/94880
and
http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/94940

Best regards,

Wolfgang Denk

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