SoC Design and Simulation forum With regard to slide 38 that talks about calling from secure code to non-secure code, can we assume that the registers pushed {r4-r11} cannot be viewed by examining the stack?

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With regard to slide 38 that talks about calling from secure code to non-secure code, can we assume that the registers pushed {r4-r11} cannot be viewed by examining the stack?

Ed Player over 7 years ago

This question was raised in the 'How to implement a secure IoT system on ARMv8-M' webinar, view all the questions in the round up blog post.

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+1 Ed Player over 7 years ago

There are separate stacks for the secure and non-secure code. These register values will be pushed onto the secure stack so they won't be exposed to the non-secure code.
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+1 Ed Player over 7 years ago

There are separate stacks for the secure and non-secure code. These register values will be pushed onto the secure stack so they won't be exposed to the non-secure code.
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