Some hypervisor calls, such as H_SEND_LOGICAL_LAN, take more arguments than are traditionally passed in registers. The HCALL ABI will accept these arguments in r11 and r12. With ELFv2 ABI, these arguments are 2 double-words lower than ELFv1 ABI, as two double-words in the stack frame are no longer used, and therefore removed from the frame. Fix the offsets for loading the registers for the HCALL. This fixes the phyp_llan driver with ELFv2 kernel. Submitted by: alfredo.junior_eldorado.org.br Differential Revision: https://reviews.freebsd.org/D20008
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