[AARCH64][ELF][llvm-readobj] Support for AArch64 .note.gnu.property
ELF for the 64-bit Arm Architecture defines a processor specific property
type GNU_PROPERTY_AARCH64_FEATURE_1_AND as GNU_PROPERTY_LOPROC. This
property works in a similar way to the existing X86 processor specific
property GNU_PROPERTY_GNU_X86_FEATURE_1_AND.
Two feature bits are defined for GNU_PROPERTY_AARCH64_FEATURE_1_AND:
- GNU_PROPERTY_AARCH64_FEATURE_1_BTI 0x1
- GNU_PROPERTY_AARCH64_FEATURE_1_PAC 0x2
This patch defines the property, feature bits and implements support for
printing in llvm-readobj.
Differential Revision: https://reviews.llvm.org/D62595
llvm-svn: 362490
diff --git a/llvm/tools/llvm-readobj/ELFDumper.cpp b/llvm/tools/llvm-readobj/ELFDumper.cpp
index 1012cf1..f87be61 100644
--- a/llvm/tools/llvm-readobj/ELFDumper.cpp
+++ b/llvm/tools/llvm-readobj/ELFDumper.cpp
@@ -3840,8 +3840,10 @@
if (DataSize)
OS << format(" <corrupt length: 0x%x>", DataSize);
return OS.str();
+ case GNU_PROPERTY_AARCH64_FEATURE_1_AND:
case GNU_PROPERTY_X86_FEATURE_1_AND:
- OS << "x86 feature: ";
+ OS << ((Type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) ? "aarch64 feature: "
+ : "x86 feature: ");
if (DataSize != 4) {
OS << format("<corrupt length: 0x%x>", DataSize);
return OS.str();
@@ -3851,8 +3853,13 @@
OS << "<None>";
return OS.str();
}
- DumpBit(GNU_PROPERTY_X86_FEATURE_1_IBT, "IBT");
- DumpBit(GNU_PROPERTY_X86_FEATURE_1_SHSTK, "SHSTK");
+ if (Type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) {
+ DumpBit(GNU_PROPERTY_AARCH64_FEATURE_1_BTI, "BTI");
+ DumpBit(GNU_PROPERTY_AARCH64_FEATURE_1_PAC, "PAC");
+ } else {
+ DumpBit(GNU_PROPERTY_X86_FEATURE_1_IBT, "IBT");
+ DumpBit(GNU_PROPERTY_X86_FEATURE_1_SHSTK, "SHSTK");
+ }
if (PrData)
OS << format("<unknown flags: 0x%x>", PrData);
return OS.str();