David Lechner f3a5b313e5 py/nlrthumb: Check __thumb2__ instead of __ARM_ARCH_6M__. ...

This fixes compiling for older architectures (e.g. armv5tej).

According to [1], the limit of R0-R7 for the STR and LDR instructions is
tied to the Thumb instruction set and not any specific processor
architectures.

[1]: http://www.keil.com/support/man/docs/armasm/armasm_dom1361289906890.htm

2019-07-03 01:24:22 +10:00

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