Chris Metcalf ce433f8090 tile: avoid undefined behavior with regs[TREG_TP] etc ...

Recent compilers warn about accesses to arrays past the end,
which is supported for pt_regs and sigcontext with the
intended alias past the end of regs[] to sp, tp, and lr
using TREG_SP, TREG_TP, and TREG_LR.

Make the intended usage explict by providing an anonymous
union of regs[56] on the one hand, and a short __regs[53]
on the other followed by the sp, tp, and lr fields, so the
aliasing is done explicitly and is visible to the compiler.

Reviewed-by: Jeff Epler <[email protected]>
Signed-off-by: Chris Metcalf <[email protected]>

2014-11-13 09:39:26 -05:00

..

arch

Removed repeated word in comments

2014-10-02 10:19:34 -04:00

asm

tile: avoid undefined behavior with regs[TREG_TP] etc

2014-11-13 09:39:26 -05:00