[AArch64] - Return address signing dwarf support
- Reapply changes intially introduced in r343089
- The archtecture info is no longer loaded whenever a DWARFContext is created
- The runtimes libraries (santiziers) make use of the dwarf context classes but
do not intialise the target info
- The architecture of the object can be obtained without loading the target info
- Adding a method to the dwarf context to get this information and multiplex the
string printing later on
Differential Revision: https://reviews.llvm.org/D55774
llvm-svn: 349472
diff --git a/llvm/lib/BinaryFormat/Dwarf.cpp b/llvm/lib/BinaryFormat/Dwarf.cpp
index 5984de7..fe8ce2b 100644
--- a/llvm/lib/BinaryFormat/Dwarf.cpp
+++ b/llvm/lib/BinaryFormat/Dwarf.cpp
@@ -13,6 +13,7 @@
#include "llvm/BinaryFormat/Dwarf.h"
#include "llvm/ADT/StringSwitch.h"
+#include "llvm/ADT/Triple.h"
#include "llvm/Support/ErrorHandling.h"
using namespace llvm;
@@ -455,14 +456,32 @@
}
}
-StringRef llvm::dwarf::CallFrameString(unsigned Encoding) {
+StringRef llvm::dwarf::CallFrameString(unsigned Encoding,
+ Triple::ArchType Arch) {
+ assert(Arch != llvm::Triple::ArchType::UnknownArch);
+#define SELECT_AARCH64 (Arch == llvm::Triple::aarch64_be || Arch == llvm::Triple::aarch64)
+#define SELECT_MIPS64 Arch == llvm::Triple::mips64
+#define SELECT_SPARC (Arch == llvm::Triple::sparc || Arch == llvm::Triple::sparcv9)
+#define SELECT_X86 (Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64)
+#define HANDLE_DW_CFA(ID, NAME)
+#define HANDLE_DW_CFA_PRED(ID, NAME, PRED) \
+ if (ID == Encoding && PRED) \
+ return "DW_CFA_" #NAME;
+#include "llvm/BinaryFormat/Dwarf.def"
+
switch (Encoding) {
default:
return StringRef();
+#define HANDLE_DW_CFA_PRED(ID, NAME, PRED)
#define HANDLE_DW_CFA(ID, NAME) \
case DW_CFA_##NAME: \
return "DW_CFA_" #NAME;
#include "llvm/BinaryFormat/Dwarf.def"
+
+#undef SELECT_X86
+#undef SELECT_SPARC
+#undef SELECT_MIPS64
+#undef SELECT_AARCH64
}
}