ARM cortex-M profiles

Index: http://njiot.blogspot.tw/2016/07/arm-cortex-m-relative-study.html


wiki

ARM Cortex-M instruction variations^[6][7]

ARM Cortex-M	Thumb	Thumb-2	Hardware multiply	Hardware divide	Saturated math	DSP extensions	Floating-Point Unit (FPU)	ARM architecture
Cortex-M0[1]	Most	Some	32-bit result	No	No	No	No	ARMv6-M
Cortex-M0+[2]	Most	Some	32-bit result	No	No	No	No	ARMv6-M
Cortex-M1[3]	Most	Some	32-bit result	No	No	No	No	ARMv6-M
Cortex-M3[4]	Entire	Entire	32 or 64-bit result	Yes	Yes	No	No	ARMv7-M
Cortex-M4[5]	Entire	Entire	32 or 64-bit result	Yes	Yes	Yes	Optional: SP	ARMv7E-M
Cortex-M7	Entire	Entire	32 or 64-bit result	Yes	Yes	Yes	Optional: SP or SP & DP	ARMv7E-M

Ref: ARM v8m architecture

Ref: v8m news

ARMv8-M Baseline: 
    for the most power and area constrained applications. Baseline extends ARMv6-M 
    used for the lowest-cost and smallest implementations

ARMv8-M Mainline: 
    for full-featured, highly capable embedded applications:
    for more general purpose, more scalable, and supports DSP and floating-point extensions.


Ref: M-profile architecture