GNU Arm Embedded Toolchain

Does the toolchain support thumb2?

Asked by aceperry

Hi guys,

I checked the output of: ./arm-none-eabi-gcc -print-multi-lib

and there wasn't any libs with thumb2. I wondered if that means it's rolled into thumb or is just absent from the libraries.

-Thanks for all of your work.

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Joey Ye (jinyun-ye) said : 		#1

Hi,

Firstly, thanks for your downloading and questions.

Thumb2 IS supported. armv7-m and armv7e-m are extended thumb2 instruction sets. Since this tool mainly targets Cortex-R/M, arvm7-m and armv7e-m is more apprepriate than just thumb2.

Reference reading about thumb2:
http://en.wikipedia.org/wiki/ARM_architecture#Thumb-2
http://en.wikipedia.org/wiki/ARM_Cortex-M#Instruction_set

Thanks

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