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