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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
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.
-rw-r--r--ChangeLog5
-rw-r--r--elf/elf.h7
2 files changed, 12 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index 2afedc14229..456b9ba8bbd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -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.
+
2019-06-12 Adhemerval Zanella <adhemerval.zanella@linaro.org>
* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/Makefile
diff --git a/elf/elf.h b/elf/elf.h
index bb13c870e27..7c6d6094edb 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 */