From: Roland McGrath Date: Wed, 30 Jan 2008 12:31:45 +0000 (+0100) Subject: x86: user_regset helpers X-Git-Tag: v2.6.25-rc1~1143^2~520 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bae3f7c39dee5951bcbedeaedb6744f882a00173;p=pandora-kernel.git x86: user_regset helpers This adds some inlines to linux/regset.h intended for arch code to use in its user_regset get and set functions. These make it pretty easy to deal with the interface's optional kernel-space or user-space pointers and its generalized access to a part of the register data at a time. In simple cases where the internal data structure matches the exported layout (core dump format), a get function can be nothing but a call to user_regset_copyout, and a set function a call to user_regset_copyin. In other cases the exported layout is usually made up of a few pieces each stored contiguously in a different internal data structure. These helpers make it straightforward to write a get or set function by processing each contiguous chunk of the data in order. The start_pos and end_pos arguments are always constants, so these inlines collapse to a small amount of code. Signed-off-by: Roland McGrath Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- Reading git-diff-tree failed