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A characteristic of the ARM architecture is its predicated execution model. Instructions can be conditionally executed depending on the status flags on the CPU. For
A characteristic of the ARM architecture is its predicated execution model. Instructions can be conditionally executed depending on the status flags on the CPU. For example, store can be conditionally executed by predicating the instruction with the It suffix: strlt r2, [r0], #4. Predicated execution is not readily available in the Cortex-M series. For this purpose, the ARM v7-M architecture defines the it instruction. Describe the functionality of this instruction. Utilize this instruction to write a small routine that clears the. bss segment of a program. You may assume that the start address of the .bss segment is at __bss_start__ and the end address at _bss_end __
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