diff options
| author | Rafael Espindola <rafael.espindola@gmail.com> | 2010-11-11 17:24:43 +0000 |
|---|---|---|
| committer | Rafael Espindola <rafael.espindola@gmail.com> | 2010-11-11 17:24:43 +0000 |
| commit | 9302bd664d930e7e6b61e208b0cca06fe71e8eb3 (patch) | |
| tree | a47ff74a28912fc6e2f2dfc02cbed9844187b694 | |
| parent | 1e68fdb946d76547646d2dad0f768a405041f037 (diff) | |
Make AliasedSymbol able to handle MCTargetExpr. They can get here if
a weakref is used with a VariantKind.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118798 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/MC/ELFObjectWriter.cpp | 19 | ||||
| -rw-r--r-- | test/MC/ELF/weakref-plt.s | 8 |
2 files changed, 24 insertions, 3 deletions
diff --git a/lib/MC/ELFObjectWriter.cpp b/lib/MC/ELFObjectWriter.cpp index f84164d253..93ea77a0e1 100644 --- a/lib/MC/ELFObjectWriter.cpp +++ b/lib/MC/ELFObjectWriter.cpp @@ -470,10 +470,23 @@ static const MCSymbol &AliasedSymbol(const MCSymbol &Symbol) { const MCSymbol *S = &Symbol; while (S->isVariable()) { const MCExpr *Value = S->getVariableValue(); - if (Value->getKind() != MCExpr::SymbolRef) + MCExpr::ExprKind Kind = Value->getKind(); + switch (Kind) { + case MCExpr::SymbolRef: { + const MCSymbolRefExpr *Ref = static_cast<const MCSymbolRefExpr*>(Value); + S = &Ref->getSymbol(); + break; + } + case MCExpr::Target: { + const MCTargetExpr *TExp = static_cast<const MCTargetExpr*>(Value); + MCValue Res; + TExp->EvaluateAsRelocatableImpl(Res, NULL); + S = &Res.getSymA()->getSymbol(); + break; + } + default: return *S; - const MCSymbolRefExpr *Ref = static_cast<const MCSymbolRefExpr*>(Value); - S = &Ref->getSymbol(); + } } return *S; } diff --git a/test/MC/ELF/weakref-plt.s b/test/MC/ELF/weakref-plt.s new file mode 100644 index 0000000000..26ba3f6df5 --- /dev/null +++ b/test/MC/ELF/weakref-plt.s @@ -0,0 +1,8 @@ +// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | elf-dump | FileCheck %s + + .weakref bar,foo + call bar@PLT + +// CHECK: # Symbol 0x00000005 +// CHECK-NEXT: (('st_name', 0x00000001) # 'foo' +// CHECK-NEXT: ('st_bind', 0x00000002) |