BMC/Intel-BMC/linux.git/arch/tile/include/uapi/asm/ptrace.h, branch dev

tile: avoid undefined behavior with regs[TREG_TP] etc

2014-11-13T14:39:26+00:00

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 Signed-off-by: Chris Metcalf

arch/tile: clean up tile-specific PTRACE_SETOPTIONS

2012-12-14T17:56:54+00:00

Use the newer idioms for setting PTRACE_O_xxx and PT_TRACE_xxx flags. Only set/clear tile-specific flags if the generic routine returns success, since otherwise we want to avoid setting any flags at all. Atomically update the ptrace flags with the new values. Eliminate the PT_TRACE_MASK_TILE bitmask and just shift PTRACE_O_MASK_TILE. Add a BUILD_BUG_ON to avoid overlapping with generic bits. Acked-by: Oleg Nesterov Signed-off-by: Chris Metcalf

arch/tile: provide PT_FLAGS_COMPAT value in pt_regs

2012-12-13T16:34:24+00:00

This flag is set for ptrace GETREGS or PEEKUSER for processes that are COMPAT, i.e. 32-bit. This allows things like strace to easily discover what personality to use, for example. Acked-by: Oleg Nesterov Signed-off-by: Chris Metcalf

UAPI: (Scripted) Disintegrate arch/tile/include/asm

2012-10-09T08:47:47+00:00

Signed-off-by: David Howells Acked-by: Arnd Bergmann Acked-by: Thomas Gleixner Acked-by: Michael Kerrisk Acked-by: Paul E. McKenney Acked-by: Dave Jones