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| author | Saleem Abdulrasool <compnerd@compnerd.org> | 2014-01-30 04:02:31 +0000 |
|---|---|---|
| committer | Saleem Abdulrasool <compnerd@compnerd.org> | 2014-01-30 04:02:31 +0000 |
| commit | 6e00ca887ebbeef8018cd058e68be82697f8b989 (patch) | |
| tree | 7b649ce11ae2b18177bd3ddaff52542eae745f0b /llvm/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp | |
| parent | f6f0ce903e4321ea4590696137a678ffbce9ed69 (diff) | |
| download | llvm-6e00ca887ebbeef8018cd058e68be82697f8b989.zip llvm-6e00ca887ebbeef8018cd058e68be82697f8b989.tar.gz llvm-6e00ca887ebbeef8018cd058e68be82697f8b989.tar.bz2 | |
ARM: support tlscall relocations
This adds support for TLS CALL relocations. TLS CALL relocations are used to
indicate to the linker to generate appropriate entries to resolve TLS references
via an appropriate function invocation (e.g. __tls_get_addr(PLT)).
In order to accomodate the linker relaxation of the TLS access model for the
references (GD/LD -> IE, IE -> LE), the relocation addend must be incomplete.
This requires that the partial inplace value is also incomplete (i.e. 0). We
simply avoid the offset value calculation at the time of the fixup adjustment in
the ARM assembler backend.
llvm-svn: 200446
Diffstat (limited to 'llvm/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp')
| -rw-r--r-- | llvm/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp index 6fcc021..08c0402 100644 --- a/llvm/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp +++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp @@ -179,6 +179,9 @@ unsigned ARMELFObjectWriter::GetRelocTypeInner(const MCValue &Target, case MCSymbolRefExpr::VK_PLT: Type = ELF::R_ARM_PLT32; break; + case MCSymbolRefExpr::VK_ARM_TLSCALL: + Type = ELF::R_ARM_TLS_CALL; + break; default: Type = ELF::R_ARM_CALL; break; @@ -211,7 +214,14 @@ unsigned ARMELFObjectWriter::GetRelocTypeInner(const MCValue &Target, break; case ARM::fixup_arm_thumb_bl: case ARM::fixup_arm_thumb_blx: - Type = ELF::R_ARM_THM_CALL; + switch (Modifier) { + case MCSymbolRefExpr::VK_ARM_TLSCALL: + Type = ELF::R_ARM_THM_TLS_CALL; + break; + default: + Type = ELF::R_ARM_THM_CALL; + break; + } break; } } else { @@ -253,6 +263,9 @@ unsigned ARMELFObjectWriter::GetRelocTypeInner(const MCValue &Target, case MCSymbolRefExpr::VK_ARM_TLSLDO: Type = ELF::R_ARM_TLS_LDO32; break; + case MCSymbolRefExpr::VK_ARM_TLSCALL: + Type = ELF::R_ARM_TLS_CALL; + break; } break; case ARM::fixup_arm_ldst_pcrel_12: |