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FRV: Add support for emulation of userspace atomic ops [try #2]
authorDavid Howells <dhowells@redhat.com>
Thu, 10 Apr 2008 15:10:55 +0000 (16:10 +0100)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 10 Apr 2008 20:41:29 +0000 (13:41 -0700)
commite31c243f984628d02f045dc4b622f1e2827860dc
treecd2ac2f33c7da86b515087260d93179b31fd1671tree | snapshot (tar.gz zip)
parent0c93d8e4d342b1b5cda1037f2527fcf443c80fbccommit | diff
FRV: Add support for emulation of userspace atomic ops [try #2]

Use traps 120-126 to emulate atomic cmpxchg32, xchg32, and XOR-, OR-, AND-, SUB-
and ADD-to-memory operations for userspace.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/frv/kernel/entry-table.S diff | blob | blame | history
arch/frv/kernel/entry.S diff | blob | blame | history
arch/frv/kernel/traps.c diff | blob | blame | history
include/asm-frv/spr-regs.h diff | blob | blame | history