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| author | Ulrich Weigand <ulrich.weigand@de.ibm.com> | 2013-06-21 14:44:37 +0000 |
|---|---|---|
| committer | Ulrich Weigand <ulrich.weigand@de.ibm.com> | 2013-06-21 14:44:37 +0000 |
| commit | 91add7dfbfecad3eadc20548d3d13d955ab216ae (patch) | |
| tree | 4110f1b90627dee500cbacfbb6e4429f5dd0e542 /llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp | |
| parent | 876a0d0133f6d9fe801f368635fd4c20032f3f9e (diff) | |
| download | llvm-91add7dfbfecad3eadc20548d3d13d955ab216ae.zip llvm-91add7dfbfecad3eadc20548d3d13d955ab216ae.tar.gz llvm-91add7dfbfecad3eadc20548d3d13d955ab216ae.tar.bz2 | |
[PowerPC] Support R_PPC_REL16 family of relocations
The GNU assembler supports (as extension to the ABI) use of PC-relative
relocations in half16 fields, which allows writing code like:
li 1, base-.
This patch adds support for those relocation types in the assembler.
llvm-svn: 184552
Diffstat (limited to 'llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp')
| -rw-r--r-- | llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp index 0155a89..69e84a1 100644 --- a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp +++ b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp @@ -63,6 +63,23 @@ unsigned PPCELFObjectWriter::getRelocTypeInner(const MCValue &Target, case PPC::fixup_ppc_brcond14: Type = ELF::R_PPC_REL14; break; + case PPC::fixup_ppc_half16: + switch (Modifier) { + default: llvm_unreachable("Unsupported Modifier"); + case MCSymbolRefExpr::VK_None: + Type = ELF::R_PPC_REL16; + break; + case MCSymbolRefExpr::VK_PPC_LO: + Type = ELF::R_PPC_REL16_LO; + break; + case MCSymbolRefExpr::VK_PPC_HI: + Type = ELF::R_PPC_REL16_HI; + break; + case MCSymbolRefExpr::VK_PPC_HA: + Type = ELF::R_PPC_REL16_HA; + break; + } + break; case FK_Data_4: case FK_PCRel_4: Type = ELF::R_PPC_REL32; |