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| author | H.J. Lu <hjl.tools@gmail.com> | 2015-08-25 09:42:20 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2016-06-22 06:04:17 -0700 |
| commit | dc14c8980672194a1b329b5c35a7f781bc04a3f5 (patch) | |
| tree | e3d6a419510c587892d5ca8abf5a7a199cd640fc /include | |
| parent | 6b1edb94fedc7103b4929354d27304d0bd756f49 (diff) | |
| download | gdb-users/hjl/sharable.zip gdb-users/hjl/sharable.tar.gz gdb-users/hjl/sharable.tar.bz2 | |
Add PT_GNU_SHR/SHF_GNU_SHARABLE/SHN_GNU_SHARABLE_COMMON support to gas/ldusers/hjl/sharable
PT_GNU_SHR/SHF_GNU_SHARABLE/SHN_GNU_SHARABLE_COMMON are used to group
data into a PT_GNU_SHR to improve performance on NUMA system.
Diffstat (limited to 'include')
| -rw-r--r-- | include/bfdlink.h | 3 | ||||
| -rw-r--r-- | include/elf/common.h | 6 |
2 files changed, 9 insertions, 0 deletions
diff --git a/include/bfdlink.h b/include/bfdlink.h index b392d54..4d06344 100644 --- a/include/bfdlink.h +++ b/include/bfdlink.h @@ -433,6 +433,9 @@ struct bfd_link_info --dynamic-list command line options. */ unsigned int dynamic: 1; + /* TRUE if sharables sections may be created. */ + unsigned int sharable_sections: 1; + /* TRUE if PT_GNU_STACK segment should be created with PF_R|PF_W|PF_X flags. */ unsigned int execstack: 1; diff --git a/include/elf/common.h b/include/elf/common.h index 087d876..111f206 100644 --- a/include/elf/common.h +++ b/include/elf/common.h @@ -440,6 +440,7 @@ #define PT_SUNW_EH_FRAME PT_GNU_EH_FRAME /* Solaris uses the same value */ #define PT_GNU_STACK (PT_LOOS + 0x474e551) /* Stack flags */ #define PT_GNU_RELRO (PT_LOOS + 0x474e552) /* Read-only after relocation */ +#define PT_GNU_SHR (PT_LOOS + 0x474e554) /* Sharable segment */ /* Program segment permissions, in program header p_flags field. */ @@ -523,6 +524,8 @@ are not to be further relocated. */ +#define SHF_GNU_SHARABLE 0x01000000 /* sharable section */ + /* Compression types */ #define ELFCOMPRESS_ZLIB 1 /* Compressed with zlib. */ #define ELFCOMPRESS_LOOS 0x60000000 /* OS-specific semantics, lo */ @@ -720,6 +723,9 @@ #define STT_LOPROC 13 /* Processor-specific semantics */ #define STT_HIPROC 15 /* Processor-specific semantics */ +/* Associated symbol is in common sharable */ +#define SHN_GNU_SHARABLE_COMMON (SHN_LOOS + 10) + /* The following constants control how a symbol may be accessed once it has become part of an executable or shared library. */ |