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7 Commits

Author SHA1 Message Date
Ruslan Bukin
e3ee7f49f1 Access pcpup using gp register. 2016-02-04 14:30:46 +00:00
Ruslan Bukin
4d50647d52 Reuse gp register for pcpu pointer. 
gp (global pointer) is used by compiler in userland only,
so re-use it for pcpup in kernel, save it on stack on switching
out to userland and load back on return to kernel.

Discussed with:	jhb, andrew, kib
Sponsored by:	DARPA, AFRL
Sponsored by:	HEIF5
Differential Revision:	https://reviews.freebsd.org/D5178
 2016-02-04 12:49:28 +00:00
Ruslan Bukin
46c9b07f22 Fix build. 2016-02-04 11:52:53 +00:00
Gleb Smirnoff
6c95c7903c Fix build. 2016-02-04 03:55:41 +00:00
Ruslan Bukin
28029b68c0 Welcome the RISC-V 64-bit kernel. 
This is the final step required allowing to compile and to run RISC-V
kernel and userland from HEAD.

RISC-V is a completely open ISA that is freely available to academia
and industry.

Thanks to all the people involved! Special thanks to Andrew Turner,
David Chisnall, Ed Maste, Konstantin Belousov, John Baldwin and
Arun Thomas for their help.
Thanks to Robert Watson for organizing this project.

This project sponsored by UK Higher Education Innovation Fund (HEIF5) and
DARPA CTSRD project at the University of Cambridge Computer Laboratory.

FreeBSD/RISC-V project home: https://wiki.freebsd.org/riscv

Reviewed by:	andrew, emaste, kib
Relnotes:	Yes
Sponsored by:	DARPA, AFRL
Sponsored by:	HEIF5
Differential Revision:	https://reviews.freebsd.org/D4982
 2016-01-29 15:12:31 +00:00
Ruslan Bukin
02568041ed Correct RISC-V exception types. 2016-01-18 17:49:32 +00:00
Ruslan Bukin
8d7e7a98db Import RISC-V machine headers. This is a minimal set required to compile 
kernel and userland.

Reviewed by:	andrew, imp, kib
Sponsored by:	DARPA, AFRL
Sponsored by:	HEIF5
Differential Revision:	https://reviews.freebsd.org/D4554
 2015-12-17 18:44:30 +00:00