Add support for tlsldm assembler operator to ARM target
The standard local dynamic model for TLS on ARM systems needs two
relocations:
- R_ARM_TLS_LDM32 (module idx)
- R_ARM_TLS_LDO32 (offset of object from origin of module TLS block)
In GNU style assembler we use symbol(tlsldm) and symbol(tlsldo) to
produce these relocations.
llvm-mc for ARM supports symbol(tlsldo) but does not support symbol(tlsldm).
This patch wires up the existing symbol(tlsldm) to R_ARM_TLS_LDM32.
TLS for ARM is defined in Addenda to, and Errata in, the ABI for the
ARM Architecture
Differential Revision: https://reviews.llvm.org/D22461
llvm-svn: 275977
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp
index 4118fe8..bb562df 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp
@@ -221,6 +221,9 @@
case MCSymbolRefExpr::VK_TLSDESC:
Type = ELF::R_ARM_TLS_GOTDESC;
break;
+ case MCSymbolRefExpr::VK_TLSLDM:
+ Type = ELF::R_ARM_TLS_LDM32;
+ break;
case MCSymbolRefExpr::VK_ARM_TLSDESCSEQ:
Type = ELF::R_ARM_TLS_DESCSEQ;
break;