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ARM Cortex-M4/M7/M33 MPU Region Alignment, Sub-Region Bitmask & Cache-Attribute Packer

Deterministic ARMv7-M PMSAv7 power-of-two natural-alignment + 8-subregion bitmask exact-cover solver & ARMv8-M PMSAv8 RLAR/MAIR_EL1 32-byte granularity compiler engine (.c, .h, .ld, .json) built for ARM, STMicroelectronics, FreeRTOS-MPU, NXP — zero-upload ephemeral Wasm RAM execution.

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