Re: [RFC PATCH 1/5] elf: add livepatch-specific elf constants

From: Josh Poimboeuf
Date: Thu Nov 12 2015 - 10:34:10 EST


On Mon, Nov 09, 2015 at 11:45:51PM -0500, Jessica Yu wrote:
> Add livepatch elf reloc section flag, livepatch symbol bind
> and section index
>
> Signed-off-by: Jessica Yu <jeyu@xxxxxxxxxx>
> ---
> 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 71e1d0e..967ce1b 100644
> --- a/include/uapi/linux/elf.h
> +++ b/include/uapi/linux/elf.h
> @@ -118,6 +118,7 @@ typedef __s64 Elf64_Sxword;
> #define STB_LOCAL 0
> #define STB_GLOBAL 1
> #define STB_WEAK 2
> +#define STB_LIVEPATCH_EXT 11
>
> #define STT_NOTYPE 0
> #define STT_OBJECT 1
> @@ -286,6 +287,7 @@ typedef struct elf64_phdr {
> #define SHF_ALLOC 0x2
> #define SHF_EXECINSTR 0x4
> #define SHF_MASKPROC 0xf0000000
> +#define SHF_RELA_LIVEPATCH 0x4000000
>
> /* special section indexes */
> #define SHN_UNDEF 0
> @@ -295,6 +297,7 @@ typedef struct elf64_phdr {
> #define SHN_ABS 0xfff1
> #define SHN_COMMON 0xfff2
> #define SHN_HIRESERVE 0xffff
> +#define SHN_LIVEPATCH 0xff21
>
> typedef struct elf32_shdr {
> Elf32_Word sh_name;

For all of these it would be good to re-indent the surrounding macros so
their values are all vertically aligned with the new LIVEPATCH ones.

--
Josh
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