< Architectures | ARM
We are currently engaged in early bootstrap of support for an ARMv7 "hardfp" (hardware floating point) version of Fedora 15. In addition to adding support for hardware floating point, this port makes a transition to newer variant of the ARM ABI (sometimes referred to as "EABI" informally, though that name does not exist any more in official terms), and in particular to a newer variant of the Procedure Calling Standard for ARM Architecture AAPCS. The newer ABI (as defined in section 6 of the AAPCS) uses floating point registers as part of the procedure calling interface.
Hardware floating point in ARMv7 processors takes the form of the VFPv3 (Vector Floating Point version 3) co-processor, which is a modern vector processing unit unrelated to the original ARM FPU present or emulated in earlier ARM systems.