[PATCH 2/5] elf: Introduce the ARM MTE ELF segment type

[Luis Machado]

On 12/8/21 9:19 AM, Catalin Marinas wrote:
> Memory tags will be dumped in the core file as segments with their own
> type. Discussions with the binutils and the generic ABI community
> settled on using new definitions in the PT_*PROC space (and to be
> documented in the processor-specific ABIs).
> 
> Introduce PT_ARM_MEMTAG_MTE as (PT_LOPROC + 0x1). Not included in this
> patch since there is no upstream support but the CHERI/BSD community
> will also reserve:
> 
>    #define PT_ARM_MEMTAG_CHERI    (PT_LOPROC + 0x2)
>    #define PT_RISCV_MEMTAG_CHERI  (PT_LOPROC + 0x3)
> 
> Signed-off-by: Catalin Marinas <catalin.marinas at arm.com>
> ---
>   include/uapi/linux/elf.h | 3 +++
>   1 file changed, 3 insertions(+)
> 
> diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
> index 61bf4774b8f2..fe8e5b74cb39 100644
> --- a/include/uapi/linux/elf.h
> +++ b/include/uapi/linux/elf.h
> @@ -40,6 +40,9 @@ typedef __s64	Elf64_Sxword;
>   
>   #define PT_GNU_STACK	(PT_LOOS + 0x474e551)
>   
> +/* ARM MTE memory tag segment type */
> +#define PT_ARM_MEMTAG_MTE	(PT_LOPROC + 0x1)
> +
>   /*
>    * Extended Numbering
>    *
> 

Sorry for the delay. This looks good from the debugger's side.

Acked-by: Luis Machado <luis.machado at linaro.org>