BlackBerry 10 OS for ARMv7 Cortex A-8 and A-9 Processors

This chapter describes how to set up BlackBerry 10 OS for boards that support ARMv7 Cortex A-8 and Cortex A-9 processors.

The support for ARMv7 architecture processors (Cortex) is provided by:

  • the libstartup.a library, which initializes the ARMv7 MMU features
  • the QNX Neutrino microkernel, procnto , which uses the ARMv7 MMU

  • ARMv7 has two options for handling single-precision floating point: NEON and VFPv3.
  • ARMv7 processors boot with the NEON engine and Floating-Point Unit (FPU) disabled. Until you enable these features, attempting to execute any NEON or VFP instructions results in an undefined instruction exception.

$QNX_TARGET /armle-v7 provides binaries that run only on ARMv7 processors, and that were built with options optimized for the ARMv7 architecture:

  • They use only ARMv7 instructions.
  • They use VFPv3-d16 instructions for floating-point operations.

The kernels are named procnto and procnto-instr because there's a single variant that supports only ARMv7 processors.

Last modified: 2013-12-21

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