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(parent: cfaf025) | patch
tile: fix bug in get_user() for 4-byte values
authorChris Metcalf <cmetcalf@tilera.com>
Sat, 16 Jun 2012 20:53:06 +0000 (16:53 -0400)
committerChris Metcalf <cmetcalf@tilera.com>
Sat, 16 Jun 2012 20:56:13 +0000 (16:56 -0400)
commit6699c8cda36f296e315068ed9bbe4f03e6ed4044
tree5efaceb0e8cae2fee56c751e53c716b7859d0a13tree | snapshot
parentcfaf025112d3856637ff34a767ef785ef5cf2ca9commit | diff
tile: fix bug in get_user() for 4-byte values

The definition of 32-bit values in the 64-bit tilegx architecture is that
they should be sign-extended regardless of whether they are considered
signed or unsigned by the compiler.  Accordingly, we need to use an
"ld4s" rather than "ld4u" to load and sign-extend for get_user().

This fixes glibc bug 14238 (see http://sourceware.org/bugzilla),
introduced during the 3.5 merge window.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
arch/tile/include/asm/uaccess.h diff | blob | history
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