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aarch64: add STO_AARCH64_VARIANT_PCS and DT_AARCH64_VARIANT_PCS

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STO_AARCH64_VARIANT_PCS is a non-visibility st_other flag for marking
symbols that reference functions that may follow a variant PCS with
different register usage convention from the base PCS.

DT_AARCH64_VARIANT_PCS is a dynamic tag that marks ELF modules that
have R_*_JUMP_SLOT relocations for symbols marked with
STO_AARCH64_VARIANT_PCS (i.e. have variant PCS calls via a PLT).

	* elf/elf.h (STO_AARCH64_VARIANT_PCS): Define.
	(DT_AARCH64_VARIANT_PCS): Define.
This commit is contained in:
Szabolcs Nagy 2019-04-25 15:35:35 +01:00
parent 5f7fa9ac30
commit b95c8a3150
2 changed files with 12 additions and 0 deletions
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ChangeLog
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@ -1,3 +1,8 @@
2019-06-13 Szabolcs Nagy <szabolcs.nagy@arm.com>
* elf/elf.h (STO_AARCH64_VARIANT_PCS): Define.
(DT_AARCH64_VARIANT_PCS): Define.
2019-06-28 Florian Weimer <fweimer@redhat.com> 2019-06-28 Florian Weimer <fweimer@redhat.com>
[BZ #24744] [BZ #24744]

7
elf/elf.h
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@ -2847,6 +2847,13 @@ enum
#define R_AARCH64_TLSDESC 1031 /* TLS Descriptor. */ #define R_AARCH64_TLSDESC 1031 /* TLS Descriptor. */
#define R_AARCH64_IRELATIVE 1032 /* STT_GNU_IFUNC relocation. */ #define R_AARCH64_IRELATIVE 1032 /* STT_GNU_IFUNC relocation. */
/* AArch64 specific values for the Dyn d_tag field. */
#define DT_AARCH64_VARIANT_PCS (DT_LOPROC + 5)
#define DT_AARCH64_NUM 6
/* AArch64 specific values for the st_other field. */
#define STO_AARCH64_VARIANT_PCS 0x80
/* ARM relocs. */ /* ARM relocs. */
#define R_ARM_NONE 0 /* No reloc */ #define R_ARM_NONE 0 /* No reloc */