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authorSzabolcs Nagy <szabolcs.nagy@arm.com>2019-04-25 15:35:35 +0100
committerSzabolcs Nagy <szabolcs.nagy@arm.com>2019-06-13 09:44:44 +0100
commit55f82d328d2dd1c7c13c1992f4b9bf9c95b57551 (patch)
tree898ae82406ce102a0703d56c8f1aa7610832e3bb /elf
parent119269606996258ee0a53ff9e5828d474ee0f698 (diff)
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aarch64: add STO_AARCH64_VARIANT_PCS and DT_AARCH64_VARIANT_PCS
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.
Diffstat (limited to 'elf')
-rw-r--r--elf/elf.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/elf/elf.h b/elf/elf.h
index bb13c870e2..7c6d6094ed 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -2864,6 +2864,13 @@ enum
 #define R_AARCH64_TLSDESC      1031	/* TLS Descriptor.  */
 #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.  */
 
 #define R_ARM_NONE		0	/* No reloc */