[PATCH] [AArch64] Fix testcase compilation failure

[Luis Machado]

Oops... This actually fixes a testcase that I'm re-working for the MTE corefile submission (aarch64-mte-gcore.c),
which is local to my tree.

I'll incorporate that hunk to the upcoming v5 iteration of the MTE corefile patch.

The remaining hunk (fixing aarch64-mte.c) is what should be pushed.

On 7/5/22 14:37, Luis Machado via Gdb-patches wrote:
> Newer distros carry newer headers that contain MTE definitions.  Account
> for that fact in the MTE testcases and define constants conditionally to
> prevent compilation failures.
> ---
>   gdb/testsuite/gdb.arch/aarch64-mte-gcore.c |  9 ++++++++-
>   gdb/testsuite/gdb.arch/aarch64-mte.c       | 11 ++++++++++-
>   2 files changed, 18 insertions(+), 2 deletions(-)
> 
> diff --git a/gdb/testsuite/gdb.arch/aarch64-mte-gcore.c b/gdb/testsuite/gdb.arch/aarch64-mte-gcore.c
> index 6840acac33a..d19b5217e16 100644
> --- a/gdb/testsuite/gdb.arch/aarch64-mte-gcore.c
> +++ b/gdb/testsuite/gdb.arch/aarch64-mte-gcore.c
> @@ -39,14 +39,21 @@
>   #define PROT_MTE  0x20
>   #endif
>   
> -/* From include/uapi/linux/prctl.h */
>   #ifndef PR_SET_TAGGED_ADDR_CTRL
>   #define PR_SET_TAGGED_ADDR_CTRL 55
>   #define PR_GET_TAGGED_ADDR_CTRL 56
>   #define PR_TAGGED_ADDR_ENABLE	(1UL << 0)
> +#endif
> +
> +/* From include/uapi/linux/prctl.h */
> +#ifndef PR_MTE_TCF_SHIFT
>   #define PR_MTE_TCF_SHIFT	1
> +#define PR_MTE_TCF_NONE		(0UL << PR_MTE_TCF_SHIFT)
>   #define PR_MTE_TCF_SYNC		(1UL << PR_MTE_TCF_SHIFT)
> +#define PR_MTE_TCF_ASYNC	(2UL << PR_MTE_TCF_SHIFT)
> +#define PR_MTE_TCF_MASK		(3UL << PR_MTE_TCF_SHIFT)
>   #define PR_MTE_TAG_SHIFT	3
> +#define PR_MTE_TAG_MASK		(0xffffUL << PR_MTE_TAG_SHIFT)
>   #endif
>   
>   void
> diff --git a/gdb/testsuite/gdb.arch/aarch64-mte.c b/gdb/testsuite/gdb.arch/aarch64-mte.c
> index bd7f1a6cf53..14057253035 100644
> --- a/gdb/testsuite/gdb.arch/aarch64-mte.c
> +++ b/gdb/testsuite/gdb.arch/aarch64-mte.c
> @@ -30,15 +30,23 @@
>   #include <sys/prctl.h>
>   
>   /* From arch/arm64/include/uapi/asm/hwcap.h */
> +#ifndef HWCAP2_MTE
>   #define HWCAP2_MTE              (1 << 18)
> +#endif
>   
>   /* From arch/arm64/include/uapi/asm/mman.h */
> +#ifndef PROT_MTE
>   #define PROT_MTE  0x20
> +#endif
>   
> -/* From include/uapi/linux/prctl.h */
> +#ifndef PR_SET_TAGGED_ADDR_CTRL
>   #define PR_SET_TAGGED_ADDR_CTRL 55
>   #define PR_GET_TAGGED_ADDR_CTRL 56
>   #define PR_TAGGED_ADDR_ENABLE	(1UL << 0)
> +#endif
> +
> +/* From include/uapi/linux/prctl.h */
> +#ifndef PR_MTE_TCF_SHIFT
>   #define PR_MTE_TCF_SHIFT	1
>   #define PR_MTE_TCF_NONE		(0UL << PR_MTE_TCF_SHIFT)
>   #define PR_MTE_TCF_SYNC		(1UL << PR_MTE_TCF_SHIFT)
> @@ -46,6 +54,7 @@
>   #define PR_MTE_TCF_MASK		(3UL << PR_MTE_TCF_SHIFT)
>   #define PR_MTE_TAG_SHIFT	3
>   #define PR_MTE_TAG_MASK		(0xffffUL << PR_MTE_TAG_SHIFT)
> +#endif
>   
>   void
>   access_memory (unsigned char *tagged_ptr, unsigned char *untagged_ptr)