Re: [Xen-devel] [PATCH] arm64: remove PSR bit macros from uapi

[Will Deacon <will.deacon@xxxxxxx>]

Hi Ian,

On Fri, Apr 12, 2013 at 04:09:59PM +0100, Ian Campbell wrote:
> Exposing these in ptrace.h ends up polluting the namespace for user
> applications which include headers such as <signal.h>, e.g. when building Xen
> userspace tools on arm64:
> 
> tools/include/xen/arch-arm.h:229:0: error: "PSR_MODE_EL0t" redefined [-Werror]
> In file included from 
> /usr/lib/gcc-cross/aarch64-linux-gnu/4.7/../../../../aarch64-linux-gnu/include/sys/user.h:25:0,
>                  from 
> /usr/lib/gcc-cross/aarch64-linux-gnu/4.7/../../../../aarch64-linux-gnu/include/sys/procfs.h:34,
>                  from 
> /usr/lib/gcc-cross/aarch64-linux-gnu/4.7/../../../../aarch64-linux-gnu/include/sys/ucontext.h:26,
>                  from 
> /usr/lib/gcc-cross/aarch64-linux-gnu/4.7/../../../../aarch64-linux-gnu/include/signal.h:360,
>                  from xentrace.c:21:
> /usr/lib/gcc-cross/aarch64-linux-gnu/4.7/../../../../aarch64-linux-gnu/include/asm/ptrace.h:30:0:
>  note: this is the location of the previous definition

Strange... I don't see the PSR definitions in any headers other than
ptrace.h for my aarch64 toolchain. Which tools are you using?

Will

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