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| author | Ulrich Weigand <ulrich.weigand@de.ibm.com> | 2013-06-24 11:03:33 +0000 |
|---|---|---|
| committer | Ulrich Weigand <ulrich.weigand@de.ibm.com> | 2013-06-24 11:03:33 +0000 |
| commit | b6a30d159e3e2e322a422c4c31c6d379ff299811 (patch) | |
| tree | 3622a99b1197a25061448cdefcf64352028a4bd7 /llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp | |
| parent | 5b9d591ad108653cb4d696da2bda023ddbb51501 (diff) | |
| download | llvm-b6a30d159e3e2e322a422c4c31c6d379ff299811.zip llvm-b6a30d159e3e2e322a422c4c31c6d379ff299811.tar.gz llvm-b6a30d159e3e2e322a422c4c31c6d379ff299811.tar.bz2 | |
[PowerPC] Support absolute branches
There is currently only limited support for the "absolute" variants
of branch instructions. This patch adds support for the absolute
variants of all branches that are currently otherwise supported.
This requires adding new fixup types so that the correct variant
of relocation type can be selected by the object writer.
While the compiler will continue to usually choose the relative
branch variants, this will allow the asm parser to fully support
the absolute branches, with either immediate (numerical) or
symbolic target addresses.
No change in code generation intended.
llvm-svn: 184721
Diffstat (limited to 'llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp')
| -rw-r--r-- | llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp index 69e84a1..f48cb5e 100644 --- a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp +++ b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp @@ -58,9 +58,11 @@ unsigned PPCELFObjectWriter::getRelocTypeInner(const MCValue &Target, default: llvm_unreachable("Unimplemented"); case PPC::fixup_ppc_br24: + case PPC::fixup_ppc_br24abs: Type = ELF::R_PPC_REL24; break; case PPC::fixup_ppc_brcond14: + case PPC::fixup_ppc_brcond14abs: Type = ELF::R_PPC_REL14; break; case PPC::fixup_ppc_half16: @@ -92,10 +94,10 @@ unsigned PPCELFObjectWriter::getRelocTypeInner(const MCValue &Target, } else { switch ((unsigned)Fixup.getKind()) { default: llvm_unreachable("invalid fixup kind!"); - case PPC::fixup_ppc_br24: + case PPC::fixup_ppc_br24abs: Type = ELF::R_PPC_ADDR24; break; - case PPC::fixup_ppc_brcond14: + case PPC::fixup_ppc_brcond14abs: Type = ELF::R_PPC_ADDR14; // XXX: or BRNTAKEN?_ break; case PPC::fixup_ppc_half16: |