#ifndef LLVM_SUPPORT_DWARF_H
#define LLVM_SUPPORT_DWARF_H
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/DataTypes.h"
+
namespace llvm {
//===----------------------------------------------------------------------===//
// Debug info constants.
-enum {
- LLVMDebugVersion = (12 << 16), // Current version of debug information.
- LLVMDebugVersion11 = (11 << 16), // Constant for version 11.
- LLVMDebugVersion10 = (10 << 16), // Constant for version 10.
- LLVMDebugVersion9 = (9 << 16), // Constant for version 9.
- LLVMDebugVersion8 = (8 << 16), // Constant for version 8.
- LLVMDebugVersion7 = (7 << 16), // Constant for version 7.
- LLVMDebugVersion6 = (6 << 16), // Constant for version 6.
- LLVMDebugVersion5 = (5 << 16), // Constant for version 5.
- LLVMDebugVersion4 = (4 << 16), // Constant for version 4.
- LLVMDebugVersionMask = 0xffff0000 // Mask for version number.
+enum LLVM_ENUM_INT_TYPE(uint32_t) {
+ LLVMDebugVersion = (12 << 16), // Current version of debug information.
+ LLVMDebugVersion11 = (11 << 16), // Constant for version 11.
+ LLVMDebugVersion10 = (10 << 16), // Constant for version 10.
+ LLVMDebugVersion9 = (9 << 16), // Constant for version 9.
+ LLVMDebugVersion8 = (8 << 16), // Constant for version 8.
+ LLVMDebugVersion7 = (7 << 16), // Constant for version 7.
+ LLVMDebugVersion6 = (6 << 16), // Constant for version 6.
+ LLVMDebugVersion5 = (5 << 16), // Constant for version 5.
+ LLVMDebugVersion4 = (4 << 16), // Constant for version 4.
+ LLVMDebugVersionMask = 0xffff0000 // Mask for version number.
};
namespace dwarf {
//===----------------------------------------------------------------------===//
// Dwarf constants as gleaned from the DWARF Debugging Information Format V.4
-// reference manual http://dwarf.freestandards.org .
+// reference manual http://dwarf.freestandards.org.
//
// Do not mix the following two enumerations sets. DW_TAG_invalid changes the
// enumeration base type.
-enum llvm_dwarf_constants {
+enum LLVMConstants LLVM_ENUM_INT_TYPE(uint32_t) {
// llvm mock tags
- DW_TAG_invalid = ~0U, // Tag for invalid results.
+ DW_TAG_invalid = ~0U, // Tag for invalid results.
- DW_TAG_auto_variable = 0x100, // Tag for local (auto) variables.
- DW_TAG_arg_variable = 0x101, // Tag for argument variables.
+ DW_TAG_auto_variable = 0x100, // Tag for local (auto) variables.
+ DW_TAG_arg_variable = 0x101, // Tag for argument variables.
- DW_TAG_user_base = 0x1000, // Recommended base for user tags.
+ DW_TAG_user_base = 0x1000, // Recommended base for user tags.
- DW_CIE_VERSION = 1, // Common frame information version.
- DW_CIE_ID = 0xffffffff // Common frame information mark.
+ DWARF_VERSION = 4, // Default dwarf version we output.
+ DW_CIE_VERSION = 1, // Common frame information version.
+ DW_PUBTYPES_VERSION = 2, // Section version number for .debug_pubtypes.
+ DW_PUBNAMES_VERSION = 2, // Section version number for .debug_pubnames.
+ DW_ARANGES_VERSION = 2 // Section version number for .debug_aranges.
};
-enum dwarf_constants {
- DWARF_VERSION = 2,
+// Special ID values that distinguish a CIE from a FDE in DWARF CFI.
+// Not inside an enum because a 64-bit value is needed.
+const uint32_t DW_CIE_ID = UINT32_MAX;
+const uint64_t DW64_CIE_ID = UINT64_MAX;
+enum Constants {
// Tags
DW_TAG_array_type = 0x01,
DW_TAG_class_type = 0x02,
DW_AT_GNU_vector = 0x2107,
DW_AT_GNU_template_name = 0x2110,
+ DW_AT_GNU_odr_signature = 0x210f,
+
// Extensions for Fission proposal.
DW_AT_GNU_dwo_name = 0x2130,
DW_AT_GNU_dwo_id = 0x2131,
/// CallFrameString - Return the string for the specified call frame instruction
/// encodings.
const char *CallFrameString(unsigned Encoding);
+
+// Constants for the DWARF5 Accelerator Table Proposal
+enum AcceleratorTable {
+ // Data layout descriptors.
+ DW_ATOM_null = 0u, // Marker as the end of a list of atoms.
+ DW_ATOM_die_offset = 1u, // DIE offset in the debug_info section.
+ DW_ATOM_cu_offset = 2u, // Offset of the compile unit header that contains the
+ // item in question.
+ DW_ATOM_die_tag = 3u, // A tag entry.
+ DW_ATOM_type_flags = 4u, // Set of flags for a type.
+
+ // DW_ATOM_type_flags values.
+
+ // Always set for C++, only set for ObjC if this is the @implementation for a
+ // class.
+ DW_FLAG_type_implementation = 2u,
+
+ // Hash functions.
+
+ // Daniel J. Bernstein hash.
+ DW_hash_function_djb = 0u
+};
+
+/// AtomTypeString - Return the string for the specified Atom type.
+const char *AtomTypeString(unsigned Atom);
+
+// Constants for the GNU pubnames/pubtypes extensions supporting gdb index.
+enum GDBIndexEntryKind {
+ GIEK_NONE,
+ GIEK_TYPE,
+ GIEK_VARIABLE,
+ GIEK_FUNCTION,
+ GIEK_OTHER,
+ GIEK_UNUSED5,
+ GIEK_UNUSED6,
+ GIEK_UNUSED7
+};
+
+const char *GDBIndexEntryKindString(GDBIndexEntryKind Kind);
+
+enum GDBIndexEntryLinkage {
+ GIEL_EXTERNAL,
+ GIEL_STATIC
+};
+
+const char *GDBIndexEntryLinkageString(GDBIndexEntryLinkage Linkage);
+
+/// The gnu_pub* kind looks like:
+///
+/// 0-3 reserved
+/// 4-6 symbol kind
+/// 7 0 == global, 1 == static
+///
+/// A gdb_index descriptor includes the above kind, shifted 24 bits up with the
+/// offset of the cu within the debug_info section stored in those 24 bits.
+struct PubIndexEntryDescriptor {
+ GDBIndexEntryKind Kind;
+ GDBIndexEntryLinkage Linkage;
+ PubIndexEntryDescriptor(GDBIndexEntryKind Kind, GDBIndexEntryLinkage Linkage)
+ : Kind(Kind), Linkage(Linkage) {}
+ /* implicit */ PubIndexEntryDescriptor(GDBIndexEntryKind Kind)
+ : Kind(Kind), Linkage(GIEL_EXTERNAL) {}
+ explicit PubIndexEntryDescriptor(uint8_t Value)
+ : Kind(static_cast<GDBIndexEntryKind>((Value & KIND_MASK) >>
+ KIND_OFFSET)),
+ Linkage(static_cast<GDBIndexEntryLinkage>((Value & LINKAGE_MASK) >>
+ LINKAGE_OFFSET)) {}
+ uint8_t toBits() { return Kind << KIND_OFFSET | Linkage << LINKAGE_OFFSET; }
+
+private:
+ enum {
+ KIND_OFFSET = 4,
+ KIND_MASK = 7 << KIND_OFFSET,
+ LINKAGE_OFFSET = 7,
+ LINKAGE_MASK = 1 << LINKAGE_OFFSET
+ };
+};
+
} // End of namespace dwarf
} // End of namespace llvm
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