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-rw-r--r--llvm/include/llvm/MC/MCBTFContext.h361
-rw-r--r--llvm/include/llvm/MC/MCContext.h7
-rw-r--r--llvm/include/llvm/MC/MCObjectFileInfo.h8
-rw-r--r--llvm/include/llvm/MC/MCObjectStreamer.h1
-rw-r--r--llvm/lib/CodeGen/AsmPrinter/CMakeLists.txt1
-rw-r--r--llvm/lib/CodeGen/AsmPrinter/Dwarf2BTF.cpp501
-rw-r--r--llvm/lib/CodeGen/AsmPrinter/Dwarf2BTF.h133
-rw-r--r--llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp10
-rw-r--r--llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h3
-rw-r--r--llvm/lib/CodeGen/AsmPrinter/DwarfFile.cpp10
-rw-r--r--llvm/lib/CodeGen/AsmPrinter/DwarfFile.h7
-rw-r--r--llvm/lib/MC/CMakeLists.txt2
-rw-r--r--llvm/lib/MC/MCBTFContext.cpp229
-rw-r--r--llvm/lib/MC/MCContext.cpp11
-rw-r--r--llvm/lib/MC/MCDwarf2BTF.cpp102
-rw-r--r--llvm/lib/MC/MCDwarf2BTF.h30
-rw-r--r--llvm/lib/MC/MCObjectFileInfo.cpp3
-rw-r--r--llvm/lib/MC/MCObjectStreamer.cpp34
18 files changed, 4 insertions, 1449 deletions
diff --git a/llvm/include/llvm/MC/MCBTFContext.h b/llvm/include/llvm/MC/MCBTFContext.h
deleted file mode 100644
index 5ef35f12609..00000000000
--- a/llvm/include/llvm/MC/MCBTFContext.h
+++ /dev/null
@@ -1,361 +0,0 @@
-//===- MCBTFContext.h ---------------------------------------- *- C++ --*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-// This header file contains two parts. The first part is the BTF ELF
-// specification in C format, and the second part is the various
-// C++ classes to manipulate the data structure in order to generate
-// the BTF related ELF sections.
-//===----------------------------------------------------------------------===//
-#ifndef LLVM_MC_MCBTFCONTEXT_H
-#define LLVM_MC_MCBTFCONTEXT_H
-
-#include "llvm/MC/MCSymbol.h"
-#include "llvm/Support/raw_ostream.h"
-#include <map>
-#include <vector>
-
-#define BTF_MAGIC 0xeB9F
-#define BTF_VERSION 1
-
-struct btf_header {
- uint16_t magic;
- uint8_t version;
- uint8_t flags;
- uint32_t hdr_len;
-
- /* All offsets are in bytes relative to the end of this header */
- uint32_t type_off; // offset of type section
- uint32_t type_len; // length of type section
- uint32_t str_off; // offset of string section
- uint32_t str_len; // length of string section
-};
-
-/* Max # of type identifier */
-#define BTF_MAX_TYPE 0x0000ffff
-/* Max offset into the string section */
-#define BTF_MAX_NAME_OFFSET 0x0000ffff
-/* Max # of struct/union/enum members or func args */
-#define BTF_MAX_VLEN 0xffff
-
-struct btf_type {
- uint32_t name_off;
- /* "info" bits arrangement
- * bits 0-15: vlen (e.g. # of struct's members)
- * bits 16-23: unused
- * bits 24-27: kind (e.g. int, ptr, array...etc)
- * bits 28-31: unused
- */
- uint32_t info;
- /* "size" is used by INT, ENUM, STRUCT and UNION.
- * "size" tells the size of the type it is describing.
- *
- * "type" is used by PTR, TYPEDEF, VOLATILE, CONST, RESTRICT,
- * FUNC and FUNC_PROTO.
- * "type" is a type_id referring to another type.
- */
- union {
- uint32_t size;
- uint32_t type;
- };
-};
-
-#define BTF_INFO_KIND(info) (((info) >> 24) & 0x0f)
-#define BTF_INFO_VLEN(info) ((info)&0xffff)
-
-#define BTF_KIND_UNKN 0 /* Unknown */
-#define BTF_KIND_INT 1 /* Integer */
-#define BTF_KIND_PTR 2 /* Pointer */
-#define BTF_KIND_ARRAY 3 /* Array */
-#define BTF_KIND_STRUCT 4 /* Struct */
-#define BTF_KIND_UNION 5 /* Union */
-#define BTF_KIND_ENUM 6 /* Enumeration */
-#define BTF_KIND_FWD 7 /* Forward */
-#define BTF_KIND_TYPEDEF 8 /* Typedef */
-#define BTF_KIND_VOLATILE 9 /* Volatile */
-#define BTF_KIND_CONST 10 /* Const */
-#define BTF_KIND_RESTRICT 11 /* Restrict */
-#define BTF_KIND_FUNC 12 /* Function */
-#define BTF_KIND_FUNC_PROTO 13 /* Function Prototype */
-#define BTF_KIND_MAX 13
-#define NR_BTF_KINDS 14
-
-/* For some specific BTF_KIND, "struct btf_type" is immediately
- * followed by extra data.
- */
-
-/* BTF_KIND_INT is followed by a u32 and the following
- * is the 32 bits arrangement:
- */
-#define BTF_INT_ENCODING(VAL) (((VAL)&0x0f000000) >> 24)
-#define BTF_INT_OFFSET(VAL) (((VAL & 0x00ff0000)) >> 16)
-#define BTF_INT_BITS(VAL) ((VAL)&0x000000ff)
-
-/* Attributes stored in the BTF_INT_ENCODING */
-#define BTF_INT_SIGNED (1 << 0)
-#define BTF_INT_CHAR (1 << 1)
-#define BTF_INT_BOOL (1 << 2)
-
-/* BTF_KIND_ENUM is followed by multiple "struct btf_enum".
- * The exact number of btf_enum is stored in the vlen (of the
- * info in "struct btf_type").
- */
-struct btf_enum {
- uint32_t name_off;
- int32_t val;
-};
-
-/* BTF_KIND_ARRAY is followed by one "struct btf_array" */
-struct btf_array {
- uint32_t type;
- uint32_t index_type;
- uint32_t nelems;
-};
-
-/* BTF_KIND_STRUCT and BTF_KIND_UNION are followed
- * by multiple "struct btf_member". The exact number
- * of btf_member is stored in the vlen (of the info in
- * "struct btf_type").
- */
-struct btf_member {
- uint32_t name_off;
- uint32_t type;
- uint32_t offset; /* offset in bits */
-};
-
-/* .BTF.ext section contains func_info and line_info.
- */
-struct btf_ext_header {
- uint16_t magic;
- uint8_t version;
- uint8_t flags;
- uint32_t hdr_len;
-
- uint32_t func_info_off;
- uint32_t func_info_len;
- uint32_t line_info_off;
- uint32_t line_info_len;
-};
-
-struct bpf_func_info {
- uint32_t insn_offset;
- uint32_t type_id;
-};
-
-struct btf_sec_func_info {
- uint32_t sec_name_off;
- uint32_t num_func_info;
-};
-
-struct bpf_line_info {
- uint32_t insn_offset;
- uint32_t file_name_off;
- uint32_t line_off;
- uint32_t line_col; /* line num: line_col >> 10, col num: line_col & 0x3ff */
-};
-
-struct btf_sec_line_info {
- uint32_t sec_name_off;
- uint32_t num_line_info;
-};
-
-namespace llvm {
-
-const char *const btf_kind_str[NR_BTF_KINDS] = {
- "UNKNOWN", /* BTF_KIND_UNKN */
- "INT", /* BTF_KIND_INT */
- "PTR", /* BTF_KIND_PTR */
- "ARRAY", /* BTF_KIND_ARRAY */
- "STRUCT", /* BTF_KIND_STRUCT */
- "UNION", /* BTF_KIND_UNION */
- "ENUM", /* BTF_KIND_ENUM */
- "FWD", /* BTF_KIND_FWD */
- "TYPEDEF", /* BTF_KIND_TYPEDEF */
- "VOLATILE", /* BTF_KIND_VOLATILE */
- "CONST", /* BTF_KIND_CONST */
- "RESTRICT", /* BTF_KIND_CONST */
- "FUNC", /* BTF_KIND_FUNC */
- "FUNC_PROTO", /* BTF_KIND_FUNC_PROTO */
-};
-
-class MCBTFContext;
-class MCObjectStreamer;
-
-// This is base class of all BTF KIND. It is also used directly
-// by the reference kinds:
-// BTF_KIND_CONST, BTF_KIND_PTR, BTF_KIND_VOLATILE,
-// BTF_KIND_TYPEDEF, BTF_KIND_RESTRICT, and BTF_KIND_FWD
-class BTFTypeEntry {
-protected:
- size_t Id; /* type index in the BTF list, started from 1 */
- struct btf_type BTFType;
-
-public:
- BTFTypeEntry(size_t id, struct btf_type &type) : Id(id), BTFType(type) {}
- virtual ~BTFTypeEntry();
- unsigned char getKind() { return BTF_INFO_KIND(BTFType.info); }
- void setId(size_t Id) { this->Id = Id; }
- size_t getId() { return Id; }
- void setNameOff(unsigned NameOff) { BTFType.name_off = NameOff; }
-
- unsigned getTypeIndex() { return BTFType.type; }
- unsigned getNameOff() { return BTFType.name_off; }
- virtual size_t getSize() { return sizeof(struct btf_type); }
- virtual void print(raw_ostream &s, MCBTFContext &BTFContext);
- virtual void emitData(MCObjectStreamer *MCOS);
-};
-
-// BTF_KIND_INT
-class BTFTypeEntryInt : public BTFTypeEntry {
- unsigned IntVal; // encoding, offset, bits
-
-public:
- BTFTypeEntryInt(size_t id, struct btf_type &type, unsigned intval)
- : BTFTypeEntry(id, type), IntVal(intval) {}
- size_t getSize() { return BTFTypeEntry::getSize() + sizeof(unsigned); }
- void print(raw_ostream &s, MCBTFContext &BTFContext);
- void emitData(MCObjectStreamer *MCOS);
-};
-
-// BTF_KIND_ENUM
-class BTFTypeEntryEnum : public BTFTypeEntry {
- std::vector<struct btf_enum> EnumValues;
-
-public:
- BTFTypeEntryEnum(size_t id, struct btf_type &type,
- std::vector<struct btf_enum> &values)
- : BTFTypeEntry(id, type), EnumValues(values) {}
- size_t getSize() {
- return BTFTypeEntry::getSize() +
- BTF_INFO_VLEN(BTFType.info) * sizeof(struct btf_enum);
- }
- void print(raw_ostream &s, MCBTFContext &BTFContext);
- void emitData(MCObjectStreamer *MCOS);
-};
-
-// BTF_KIND_ARRAY
-class BTFTypeEntryArray : public BTFTypeEntry {
- struct btf_array ArrayInfo;
-
-public:
- BTFTypeEntryArray(size_t id, struct btf_type &type,
- struct btf_array &arrayinfo)
- : BTFTypeEntry(id, type), ArrayInfo(arrayinfo) {}
- size_t getSize() {
- return BTFTypeEntry::getSize() + sizeof(struct btf_array);
- }
- void print(raw_ostream &s, MCBTFContext &BTFContext);
- void emitData(MCObjectStreamer *MCOS);
-};
-
-// BTF_KIND_STRUCT and BTF_KIND_UNION
-class BTFTypeEntryStruct : public BTFTypeEntry {
- std::vector<struct btf_member> Members;
-
-public:
- BTFTypeEntryStruct(size_t id, struct btf_type &type,
- std::vector<struct btf_member> &members)
- : BTFTypeEntry(id, type), Members(members) {}
- size_t getSize() {
- return BTFTypeEntry::getSize() +
- BTF_INFO_VLEN(BTFType.info) * sizeof(struct btf_member);
- }
- void print(raw_ostream &s, MCBTFContext &BTFContext);
- void emitData(MCObjectStreamer *MCOS);
-};
-
-// BTF_KIND_FUNC and BTF_KIND_FUNC_PROTO
-class BTFTypeEntryFunc : public BTFTypeEntry {
- std::vector<unsigned> Parameters;
-
-public:
- BTFTypeEntryFunc(size_t id, struct btf_type &type,
- std::vector<unsigned> &params)
- : BTFTypeEntry(id, type), Parameters(params) {}
- size_t getSize() {
- return BTFTypeEntry::getSize() +
- BTF_INFO_VLEN(BTFType.info) * sizeof(unsigned);
- }
- void print(raw_ostream &s, MCBTFContext &BTFContext);
- void emitData(MCObjectStreamer *MCOS);
-};
-
-class BTFStringTable {
- size_t Size; // total size in bytes
- std::map<size_t, unsigned> OffsetToIdMap;
- std::vector<std::string> Table;
-
-public:
- BTFStringTable() : Size(0) {}
- size_t getSize() { return Size; }
- std::vector<std::string> &getTable() { return Table; }
- size_t addString(std::string S) {
- // check whether the string already exists
- for (auto &OffsetM : OffsetToIdMap) {
- if (Table[OffsetM.second] == S)
- return OffsetM.first;
- }
- // not find, add to the string table
- size_t Offset = Size;
- OffsetToIdMap[Offset] = Table.size();
- Table.push_back(S);
- Size += S.size() + 1;
- return Offset;
- }
- std::string &getStringAtOffset(size_t Offset) {
- return Table[OffsetToIdMap[Offset]];
- }
- void showTable(raw_ostream &OS) {
- for (auto OffsetM : OffsetToIdMap)
- OS << OffsetM.first << " : " << Table[OffsetM.second] << "\n";
- }
-};
-
-struct BTFFuncInfo {
- const MCSymbol *Label;
- unsigned int TypeId;
-};
-
-struct BTFLineInfo {
- MCSymbol *Label;
- unsigned int FileNameOff;
- unsigned int LineOff;
- unsigned int LineNum;
- unsigned int ColumnNum;
-};
-
-class MCBTFContext {
- std::vector<std::unique_ptr<BTFTypeEntry>> TypeEntries;
- BTFStringTable StringTable;
- std::map<unsigned, std::vector<BTFFuncInfo>> FuncInfoTable;
- std::map<unsigned, std::vector<BTFLineInfo>> LineInfoTable;
-
- friend class BTFTypeEntry;
- friend class BTFTypeEntryInt;
- friend class BTFTypeEntryEnum;
- friend class BTFTypeEntryArray;
- friend class BTFTypeEntryStruct;
- friend class BTFTypeEntryFunc;
-
-public:
- void dump(raw_ostream &OS);
- void emitAll(MCObjectStreamer *MCOS);
- void emitCommonHeader(MCObjectStreamer *MCOS);
- void emitBTFSection(MCObjectStreamer *MCOS);
- void emitBTFExtSection(MCObjectStreamer *MCOS);
-
- size_t addString(std::string S) { return StringTable.addString(S); }
- void addTypeEntry(std::unique_ptr<BTFTypeEntry> Entry);
- void addFuncInfo(unsigned SecNameOff, BTFFuncInfo Info) {
- FuncInfoTable[SecNameOff].push_back(Info);
- }
- void addLineInfo(unsigned SecNameOff, BTFLineInfo Info) {
- LineInfoTable[SecNameOff].push_back(Info);
- }
-};
-
-}
-#endif
diff --git a/llvm/include/llvm/MC/MCContext.h b/llvm/include/llvm/MC/MCContext.h
index d5c49408c68..3b8ac8b79e2 100644
--- a/llvm/include/llvm/MC/MCContext.h
+++ b/llvm/include/llvm/MC/MCContext.h
@@ -56,7 +56,6 @@ namespace llvm {
class MCSymbolWasm;
class SMLoc;
class SourceMgr;
- class MCBTFContext;
/// Context object for machine code objects. This class owns all of the
/// sections that it creates.
@@ -279,9 +278,6 @@ namespace llvm {
/// Map of currently defined macros.
StringMap<MCAsmMacro> MacroMap;
- /// for BTF debug information
- std::unique_ptr<MCBTFContext> BTFCtx;
-
public:
explicit MCContext(const MCAsmInfo *MAI, const MCRegisterInfo *MRI,
const MCObjectFileInfo *MOFI,
@@ -290,9 +286,6 @@ namespace llvm {
MCContext &operator=(const MCContext &) = delete;
~MCContext();
- void setBTFContext(std::unique_ptr<MCBTFContext> Ctx);
- std::unique_ptr<MCBTFContext> &getBTFContext() { return BTFCtx; }
-
const SourceMgr *getSourceManager() const { return SrcMgr; }
void setInlineSourceManager(SourceMgr *SM) { InlineSrcMgr = SM; }
diff --git a/llvm/include/llvm/MC/MCObjectFileInfo.h b/llvm/include/llvm/MC/MCObjectFileInfo.h
index 1dda7b0712f..8cf9e1cc55a 100644
--- a/llvm/include/llvm/MC/MCObjectFileInfo.h
+++ b/llvm/include/llvm/MC/MCObjectFileInfo.h
@@ -207,10 +207,6 @@ protected:
MCSection *SXDataSection;
MCSection *GFIDsSection;
- // BTF specific sections.
- MCSection *BTFSection;
- MCSection *BTFExtSection;
-
public:
void InitMCObjectFileInfo(const Triple &TT, bool PIC, MCContext &ctx,
bool LargeCodeModel = false);
@@ -376,10 +372,6 @@ public:
return EHFrameSection;
}
- // BTF specific sections.
- MCSection *getBTFSection() const { return BTFSection; }
- MCSection *getBTFExtSection() const { return BTFExtSection; }
-
enum Environment { IsMachO, IsELF, IsCOFF, IsWasm };
Environment getObjectFileType() const { return Env; }
diff --git a/llvm/include/llvm/MC/MCObjectStreamer.h b/llvm/include/llvm/MC/MCObjectStreamer.h
index 9d15086ac63..c9e577b7e29 100644
--- a/llvm/include/llvm/MC/MCObjectStreamer.h
+++ b/llvm/include/llvm/MC/MCObjectStreamer.h
@@ -138,7 +138,6 @@ public:
unsigned PointerSize);
void EmitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel,
const MCSymbol *Label);
- void EmitBTFAdvanceLineAddr(const MCSymbol *Label, unsigned Size);
void EmitCVLocDirective(unsigned FunctionId, unsigned FileNo, unsigned Line,
unsigned Column, bool PrologueEnd, bool IsStmt,
StringRef FileName, SMLoc Loc) override;
diff --git a/llvm/lib/CodeGen/AsmPrinter/CMakeLists.txt b/llvm/lib/CodeGen/AsmPrinter/CMakeLists.txt
index 14c895a9c82..6cba4a0d4b8 100644
--- a/llvm/lib/CodeGen/AsmPrinter/CMakeLists.txt
+++ b/llvm/lib/CodeGen/AsmPrinter/CMakeLists.txt
@@ -17,7 +17,6 @@ add_llvm_library(LLVMAsmPrinter
DwarfFile.cpp
DwarfStringPool.cpp
DwarfUnit.cpp
- Dwarf2BTF.cpp
EHStreamer.cpp
ErlangGCPrinter.cpp
OcamlGCPrinter.cpp
diff --git a/llvm/lib/CodeGen/AsmPrinter/Dwarf2BTF.cpp b/llvm/lib/CodeGen/AsmPrinter/Dwarf2BTF.cpp
deleted file mode 100644
index b3e6fce97b6..00000000000
--- a/llvm/lib/CodeGen/AsmPrinter/Dwarf2BTF.cpp
+++ /dev/null
@@ -1,501 +0,0 @@
-//===- Dwarf2BTF.cpp ------------------------------------------ *- C++ --*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "Dwarf2BTF.h"
-#include "DwarfUnit.h"
-#include "llvm/MC/MCBTFContext.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCSectionELF.h"
-
-namespace llvm {
-
-Die2BTFEntry::~Die2BTFEntry() {}
-
-unsigned char Die2BTFEntry::getDieKind(const DIE &Die) {
- auto Tag = Die.getTag();
-
- switch (Tag) {
- case dwarf::DW_TAG_base_type:
- if (getBaseTypeEncoding(Die) == BTF_INVALID_ENCODING)
- return BTF_KIND_UNKN;
- return BTF_KIND_INT;
- case dwarf::DW_TAG_const_type:
- return BTF_KIND_CONST;
- case dwarf::DW_TAG_pointer_type:
- return BTF_KIND_PTR;
- case dwarf::DW_TAG_restrict_type:
- return BTF_KIND_RESTRICT;
- case dwarf::DW_TAG_volatile_type:
- return BTF_KIND_VOLATILE;
- case dwarf::DW_TAG_typedef:
- return BTF_KIND_TYPEDEF;
- case dwarf::DW_TAG_structure_type:
- case dwarf::DW_TAG_class_type:
- if (Die.findAttribute(dwarf::DW_AT_declaration).getType() !=
- DIEValue::isNone)
- return BTF_KIND_FWD;
- else
- return BTF_KIND_STRUCT;
- case dwarf::DW_TAG_union_type:
- if (Die.findAttribute(dwarf::DW_AT_declaration).getType() !=
- DIEValue::isNone)
- return BTF_KIND_FWD;
- else
- return BTF_KIND_UNION;
- case dwarf::DW_TAG_enumeration_type:
- return BTF_KIND_ENUM;
- case dwarf::DW_TAG_array_type:
- return BTF_KIND_ARRAY;
- case dwarf::DW_TAG_subprogram:
- return BTF_KIND_FUNC;
- case dwarf::DW_TAG_subroutine_type:
- return BTF_KIND_FUNC_PROTO;
- default:
- break;
- }
-
- return BTF_KIND_UNKN;
-}
-
-std::unique_ptr<Die2BTFEntry> Die2BTFEntry::dieToBTFTypeEntry(const DIE &Die) {
- unsigned char Kind = getDieKind(Die);
-
- switch (Kind) {
- case BTF_KIND_INT:
- return llvm::make_unique<Die2BTFEntryInt>(Die);
- case BTF_KIND_PTR:
- case BTF_KIND_TYPEDEF:
- case BTF_KIND_VOLATILE:
- case BTF_KIND_CONST:
- case BTF_KIND_RESTRICT:
- case BTF_KIND_FWD:
- return llvm::make_unique<Die2BTFEntry>(Die);
- case BTF_KIND_ARRAY:
- return llvm::make_unique<Die2BTFEntryArray>(Die);
- case BTF_KIND_STRUCT:
- case BTF_KIND_UNION:
- return llvm::make_unique<Die2BTFEntryStruct>(Die);
- case BTF_KIND_ENUM:
- return llvm::make_unique<Die2BTFEntryEnum>(Die);
- case BTF_KIND_FUNC:
- case BTF_KIND_FUNC_PROTO:
- return llvm::make_unique<Die2BTFEntryFunc>(Die);
- default:
- break;
- }
- return nullptr;
-}
-
-bool Die2BTFEntry::shouldSkipDie(const DIE &Die) {
- auto Tag = Die.getTag();
-
- switch (Tag) {
- case dwarf::DW_TAG_const_type:
- case dwarf::DW_TAG_pointer_type:
- case dwarf::DW_TAG_restrict_type:
- case dwarf::DW_TAG_typedef:
- case dwarf::DW_TAG_volatile_type: {
- auto TypeV = Die.findAttribute(dwarf::DW_AT_type);
- if (TypeV.getType() == DIEValue::isNone)
- return false;
- auto &TypeDie = TypeV.getDIEEntry().getEntry();
- return Die2BTFEntry::shouldSkipDie(TypeDie);
- }
- default:
- return getDieKind(Die) == BTF_KIND_UNKN;
- }
- return true;
-}
-unsigned char Die2BTFEntry::getBaseTypeEncoding(const DIE &Die) {
- auto V = Die.findAttribute(dwarf::DW_AT_encoding);
-
- if (V.getType() != DIEValue::isInteger)
- return BTF_INVALID_ENCODING;
-
- switch (V.getDIEInteger().getValue()) {
- case dwarf::DW_ATE_boolean:
- return BTF_INT_BOOL;
- case dwarf::DW_ATE_signed:
- return BTF_INT_SIGNED;
- case dwarf::DW_ATE_signed_char:
- return BTF_INT_CHAR;
- case dwarf::DW_ATE_unsigned:
- return 0;
- case dwarf::DW_ATE_unsigned_char:
- return BTF_INT_CHAR;
- case dwarf::DW_ATE_imaginary_float:
- case dwarf::DW_ATE_packed_decimal:
- case dwarf::DW_ATE_numeric_string:
- case dwarf::DW_ATE_edited:
- case dwarf::DW_ATE_signed_fixed:
- case dwarf::DW_ATE_address:
- case dwarf::DW_ATE_complex_float:
- case dwarf::DW_ATE_float:
- default:
- break;
- }
- return BTF_INVALID_ENCODING;
-}
-
-Die2BTFEntry::Die2BTFEntry(const DIE &Die) : Die(Die) {
- unsigned char Kind = getDieKind(Die);
-
- switch (Kind) {
- case BTF_KIND_CONST:
- case BTF_KIND_FWD:
- case BTF_KIND_PTR:
- case BTF_KIND_RESTRICT:
- case BTF_KIND_TYPEDEF:
- case BTF_KIND_VOLATILE:
- break;
- default:
- llvm_unreachable("Invalid Die passed into BTFTypeEntry()");
- break;
- }
-
- BTFType.info = (Kind & 0xf) << 24;
-}
-
-void Die2BTFEntry::completeData(class Dwarf2BTF &Dwarf2BTF) {
- auto TypeV = Die.findAttribute(dwarf::DW_AT_type);
- if (TypeV.getType() == DIEValue::isNone) {
- BTFType.type = 0;
- } else {
- auto &TypeDie = TypeV.getDIEEntry().getEntry();
- auto Type = Dwarf2BTF.getTypeIndex(TypeDie);
- BTFType.type = Type;
- }
-
- unsigned char Kind = getDieKind(Die);
- if (Kind != BTF_KIND_FWD) {
- BTFType.name_off = 0;
- } else {
- auto NameV = Die.findAttribute(dwarf::DW_AT_name);
- auto Str = NameV.getDIEString().getString();
- BTFType.name_off = Dwarf2BTF.addBTFString(Str);
- }
-
- auto typeEntry = llvm::make_unique<BTFTypeEntry>(Id, BTFType);
- Dwarf2BTF.addBTFTypeEntry(std::move(typeEntry));
-}
-
-Die2BTFEntryInt::Die2BTFEntryInt(const DIE &Die) : Die2BTFEntry(Die) {
- unsigned char Kind = getDieKind(Die);
-
- switch (Kind) {
- case BTF_KIND_INT:
- break;
- default:
- assert("Invalid Die passed into BTFTypeEntryInt()");
- break;
- }
-
- // handle BTF_INT_ENCODING in IntVal
- auto Encoding = Die2BTFEntry::getBaseTypeEncoding(Die);
- assert((Encoding != BTF_INVALID_ENCODING) &&
- "Invalid Die passed to BTFTypeEntryInt()");
- uint32_t IntVal = (Encoding & 0xf) << 24;
-
- // handle BTF_INT_OFFSET in IntVal
- auto V = Die.findAttribute(dwarf::DW_AT_bit_offset);
- if (V.getType() == DIEValue::isInteger)
- IntVal |= (V.getDIEInteger().getValue() & 0xff) << 16;
-
- // get btf_type.size
- V = Die.findAttribute(dwarf::DW_AT_byte_size);
- uint32_t Size = V.getDIEInteger().getValue() & 0xffffffff;
-
- // handle BTF_INT_BITS in IntVal
- V = Die.findAttribute(dwarf::DW_AT_bit_size);
- if (V.getType() == DIEValue::isInteger)
- IntVal |= V.getDIEInteger().getValue() & 0xff;
- else
- IntVal |= (Size << 3) & 0xff;
-
- BTFType.info = BTF_KIND_INT << 24;
- BTFType.size = Size;
- this->IntVal = IntVal;
-}
-
-void Die2BTFEntryInt::completeData(class Dwarf2BTF &Dwarf2BTF) {
- auto NameV = Die.findAttribute(dwarf::DW_AT_name);
- auto TypeV = Die.findAttribute(dwarf::DW_AT_type);
- auto Str = NameV.getDIEString().getString();
-
- BTFType.name_off = Dwarf2BTF.addBTFString(Str);
-
- auto typeEntry = llvm::make_unique<BTFTypeEntryInt>(Id, BTFType, IntVal);
- Dwarf2BTF.addBTFTypeEntry(std::move(typeEntry));
-}
-
-Die2BTFEntryEnum::Die2BTFEntryEnum(const DIE &Die) : Die2BTFEntry(Die) {
- // get btf_type.size
- auto V = Die.findAttribute(dwarf::DW_AT_byte_size);
- uint32_t Size = V.getDIEInteger().getValue() & 0xffffffff;
-
- int Vlen = 0;
- for (auto &ChildDie : Die.children())
- if (ChildDie.getTag() == dwarf::DW_TAG_enumerator)
- Vlen++;
-
- BTFType.info = (BTF_KIND_ENUM << 24) | (Vlen & BTF_MAX_VLEN);
- BTFType.type = Size;
-}
-
-void Die2BTFEntryEnum::completeData(class Dwarf2BTF &Dwarf2BTF) {
- auto TypeV = Die.findAttribute(dwarf::DW_AT_type);
- auto NameV = Die.findAttribute(dwarf::DW_AT_name);
-
- if (NameV.getType() != DIEValue::isNone) {
- auto Str = NameV.getDIEString().getString();
- BTFType.name_off = Dwarf2BTF.addBTFString(Str);
- } else
- BTFType.name_off = 0;
-
- for (auto &ChildDie : Die.children()) {
- struct btf_enum BTFEnum;
- auto ChildNameV = ChildDie.findAttribute(dwarf::DW_AT_name);
- auto Str = ChildNameV.getDIEString().getString();
-
- BTFEnum.name_off = Dwarf2BTF.addBTFString(Str);
- auto ChildValueV = ChildDie.findAttribute(dwarf::DW_AT_const_value);
- BTFEnum.val = (int32_t)(ChildValueV.getDIEInteger().getValue());
-
- EnumValues.push_back(BTFEnum);
- }
-
- auto typeEntry = llvm::make_unique<BTFTypeEntryEnum>(Id, BTFType, EnumValues);
- Dwarf2BTF.addBTFTypeEntry(std::move(typeEntry));
-}
-
-Die2BTFEntryArray::Die2BTFEntryArray(const DIE &Die) : Die2BTFEntry(Die) {
- BTFType.info = (BTF_KIND_ARRAY << 24);
- BTFType.size = 0;
-}
-
-void Die2BTFEntryArray::completeData(class Dwarf2BTF &Dwarf2BTF) {
- auto NameV = Die.findAttribute(dwarf::DW_AT_name);
-
- std::string Str;
- if (NameV.getType() != DIEValue::isNone)
- Str = NameV.getDIEString().getString();
- BTFType.name_off = Dwarf2BTF.addBTFString(Str);
-
- auto &ArrayTypeDie =
- Die.findAttribute(dwarf::DW_AT_type).getDIEEntry().getEntry();
- ArrayInfo.type = Dwarf2BTF.getTypeIndex(ArrayTypeDie);
-
- // The number of elements should count all subranges
- unsigned Nelems = 1;
- bool IsFirstSubrange = true;
- for (auto &ChildDie : Die.children()) {
- if (ChildDie.getTag() == dwarf::DW_TAG_subrange_type) {
- if (IsFirstSubrange) {
- auto TypeV = ChildDie.findAttribute(dwarf::DW_AT_type);
- auto &TypeDie = TypeV.getDIEEntry().getEntry();
- ArrayInfo.index_type = Dwarf2BTF.getTypeIndex(TypeDie);
- IsFirstSubrange = false;
- }
- auto CountV = ChildDie.findAttribute(dwarf::DW_AT_count);
- if (CountV.getType() == DIEValue::isNone) {
- // array like a[] which essentially a pointer
- Nelems = 0;
- break;
- }
- Nelems *= (uint32_t)(CountV.getDIEInteger().getValue());
- }
- }
- ArrayInfo.nelems = Nelems;
-
- auto TypeEntry = llvm::make_unique<BTFTypeEntryArray>(Id, BTFType, ArrayInfo);
- Dwarf2BTF.addBTFTypeEntry(std::move(TypeEntry));
-}
-
-Die2BTFEntryStruct::Die2BTFEntryStruct(const DIE &Die) : Die2BTFEntry(Die) {
- // get btf_type.size
- auto V = Die.findAttribute(dwarf::DW_AT_byte_size);
- uint32_t Size = V.getDIEInteger().getValue() & 0xffffffff;
- auto Kind = Die2BTFEntry::getDieKind(Die);
-
- int Vlen = 0;
- for (auto &ChildDie : Die.children())
- if (ChildDie.getTag() == dwarf::DW_TAG_member)
- Vlen++;
-
- BTFType.size = Size;
- BTFType.info = (Kind << 24) | (Vlen & BTF_MAX_VLEN);
-}
-
-void Die2BTFEntryStruct::completeData(class Dwarf2BTF &Dwarf2BTF) {
- auto NameV = Die.findAttribute(dwarf::DW_AT_name);
-
- if (NameV.getType() != DIEValue::isNone) {
- auto Str = NameV.getDIEString().getString();
- BTFType.name_off = Dwarf2BTF.addBTFString(Str);
- } else
- BTFType.name_off = 0;
-
- for (auto &ChildDie : Die.children()) {
- if (ChildDie.getTag() != dwarf::DW_TAG_member)
- continue;
-
- struct btf_member BTFMember;
- auto ChildNameV = ChildDie.findAttribute(dwarf::DW_AT_name);
-
- if (ChildNameV.getType() != DIEValue::isNone) {
- auto Str = ChildNameV.getDIEString().getString();
- BTFMember.name_off = Dwarf2BTF.addBTFString(Str);
- } else
- BTFMember.name_off = 0;
-
- auto TypeV = ChildDie.findAttribute(dwarf::DW_AT_type);
- auto &TypeDie = TypeV.getDIEEntry().getEntry();
- BTFMember.type = Dwarf2BTF.getTypeIndex(TypeDie);
-
- auto MemLocV = ChildDie.findAttribute(dwarf::DW_AT_data_member_location);
- unsigned MemLoc = MemLocV.getDIEInteger().getValue() * 8;
-
- auto ByteSizeV = ChildDie.findAttribute(dwarf::DW_AT_byte_size);
- if (ByteSizeV.getType() != DIEValue::isNone) {
- unsigned ByteSize = ByteSizeV.getDIEInteger().getValue();
- auto BitOffsetV = ChildDie.findAttribute(dwarf::DW_AT_bit_offset);
- unsigned BitOffset = BitOffsetV.getDIEInteger().getValue();
- auto BitSizeV = ChildDie.findAttribute(dwarf::DW_AT_bit_size);
- unsigned BitSize = BitSizeV.getDIEInteger().getValue();
- if (Dwarf2BTF.isLittleEndian())
- MemLoc += ByteSize * 8 - BitSize - BitOffset;
- else
- MemLoc += BitOffset;
- }
- BTFMember.offset = MemLoc;
-
- Members.push_back(BTFMember);
- }
-
- auto typeEntry = llvm::make_unique<BTFTypeEntryStruct>(Id, BTFType, Members);
- Dwarf2BTF.addBTFTypeEntry(std::move(typeEntry));
-}
-
-Die2BTFEntryFunc::Die2BTFEntryFunc(const DIE &Die) : Die2BTFEntry(Die) {
- auto Kind = Die2BTFEntry::getDieKind(Die);
-
- int Vlen = 0;
- for (auto &ChildDie : Die.children())
- if (ChildDie.getTag() == dwarf::DW_TAG_formal_parameter)
- Vlen++;
-
- BTFType.size = 0;
- BTFType.info = (Kind << 24) | (Vlen & BTF_MAX_VLEN);
-}
-
-void Die2BTFEntryFunc::completeData(class Dwarf2BTF &Dwarf2BTF) {
- auto NameV = Die.findAttribute(dwarf::DW_AT_name);
- if (NameV.getType() == DIEValue::isNone) {
- BTFType.name_off = 0;
- } else {
- auto Str = NameV.getDIEString().getString();
- BTFType.name_off = Dwarf2BTF.addBTFString(Str);
- }
-
- auto RetTypeV = Die.findAttribute(dwarf::DW_AT_type);
- if (RetTypeV.getType() != DIEValue::isNone) {
- auto &TypeDie = RetTypeV.getDIEEntry().getEntry();
- BTFType.type = Dwarf2BTF.getTypeIndex(TypeDie);
- } else {
- BTFType.type = 0;
- }
-
- for (auto &ChildDie : Die.children()) {
- if (ChildDie.getTag() == dwarf::DW_TAG_formal_parameter) {
- auto TypeV = ChildDie.findAttribute(dwarf::DW_AT_abstract_origin);
- if (TypeV.getType() != DIEValue::isNone) {
- auto &AbsOriginDie = TypeV.getDIEEntry().getEntry();
- assert(AbsOriginDie.getTag() == dwarf::DW_TAG_formal_parameter);
- TypeV = AbsOriginDie.findAttribute(dwarf::DW_AT_type);
- } else {
- TypeV = ChildDie.findAttribute(dwarf::DW_AT_type);
- }
- auto &TypeDie = TypeV.getDIEEntry().getEntry();
- Parameters.push_back(Dwarf2BTF.getTypeIndex(TypeDie));
- } else if (ChildDie.getTag() == dwarf::DW_TAG_unspecified_parameters) {
- Parameters.push_back(0);
- }
- }
-
- auto typeEntry = llvm::make_unique<BTFTypeEntryFunc>(Id, BTFType, Parameters);
- Dwarf2BTF.addBTFTypeEntry(std::move(typeEntry));
-
- if (BTF_INFO_KIND(BTFType.info) == BTF_KIND_FUNC) {
- auto LowPCV = Die.findAttribute(dwarf::DW_AT_low_pc);
- if (LowPCV.getType() != DIEValue::isNone) {
- const MCSymbol *Label = LowPCV.getDIELabel().getValue();
- BTFFuncInfo FuncInfo;
- unsigned SecNameOff;
-
- FuncInfo.Label = Label;
- FuncInfo.TypeId = Id;
- if (Label->isInSection()) {
- MCSection &Section = Label->getSection();
- MCSectionELF *SectionELF = dyn_cast<MCSectionELF>(&Section);
- assert(SectionELF);
- SecNameOff = Dwarf2BTF.addBTFString(SectionELF->getSectionName().str());
- } else {
- SecNameOff = Dwarf2BTF.addBTFString(".text");
- }
- Dwarf2BTF.addBTFFuncInfo(SecNameOff, FuncInfo);
- }
- }
-}
-
-Dwarf2BTF::Dwarf2BTF(MCContext &Context, bool IsLittleEndian)
- : OuterCtx(Context), IsLE(IsLittleEndian) {
- BTFContext = llvm::make_unique<MCBTFContext>();
-}
-
-void Dwarf2BTF::addTypeEntry(const DIE &Die) {
- for (auto &ChildDie : Die.children())
- addTypeEntry(ChildDie);
- if (Die2BTFEntry::shouldSkipDie(Die))
- return;
- auto Kind = Die2BTFEntry::getDieKind(Die);
- if (Kind != BTF_KIND_UNKN) {
- auto TypeEntry = Die2BTFEntry::dieToBTFTypeEntry(Die);
- if (TypeEntry != nullptr) {
- TypeEntry->setId(TypeEntries.size() + 1);
- DieToIdMap[const_cast<DIE *>(&Die)] = TypeEntry->getId();
- TypeEntries.push_back(std::move(TypeEntry));
- }
- }
-}
-
-void Dwarf2BTF::addBTFTypeEntry(std::unique_ptr<BTFTypeEntry> Entry) {
- BTFContext->addTypeEntry(std::move(Entry));
-}
-
-void Dwarf2BTF::completeData() {
- BTFContext->addString("\0");
-
- for (auto &TypeEntry : TypeEntries)
- TypeEntry->completeData(*this);
-}
-
-void Dwarf2BTF::addDwarfCU(DwarfUnit *TheU) {
- DIE &CuDie = TheU->getUnitDie();
-
- assert((CuDie.getTag() == dwarf::DW_TAG_compile_unit) &&
- "Not a compile unit");
- addTypeEntry(CuDie);
-}
-
-void Dwarf2BTF::finish() {
- completeData();
- OuterCtx.setBTFContext(std::move(BTFContext));
-}
-
-} // namespace llvm
diff --git a/llvm/lib/CodeGen/AsmPrinter/Dwarf2BTF.h b/llvm/lib/CodeGen/AsmPrinter/Dwarf2BTF.h
deleted file mode 100644
index ae13847214c..00000000000
--- a/llvm/lib/CodeGen/AsmPrinter/Dwarf2BTF.h
+++ /dev/null
@@ -1,133 +0,0 @@
-//===- Dwarf2BTF.h -------------------------------------------- *- C++ --*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARF2BTF_H
-#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARF2BTF_H
-
-#include "DwarfUnit.h"
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/DIE.h"
-#include "llvm/MC/MCBTFContext.h"
-#include <map>
-
-namespace llvm {
-
-class Dwarf2BTF;
-class MCBTFContext;
-
-#define BTF_INVALID_ENCODING 0xff
-
-class Die2BTFEntry {
-protected:
- const DIE &Die;
- size_t Id; /* type index in the BTF list, started from 1 */
- struct btf_type BTFType;
-
-public:
- virtual ~Die2BTFEntry();
- // Return desired BTF_KIND for the Die, return BTF_KIND_UNKN for
- // invalid/unsupported Die
- static unsigned char getDieKind(const DIE &Die);
-
- // Return proper BTF_INT_ENCODING of a basetype.
- // Return BTF_INVALID_ENCODING for unsupported (float, etc.)
- static unsigned char getBaseTypeEncoding(const DIE &Die);
-
- // Return whether this Die should be skipped.
- // We currently skip unsupported data type (e.g. float)
- // and references to unsupported types
- static bool shouldSkipDie(const DIE &Die);
-
- static std::unique_ptr<Die2BTFEntry> dieToBTFTypeEntry(const DIE &Die);
-
- Die2BTFEntry(const DIE &Die);
- void setId(size_t Id) { this->Id = Id; }
- size_t getId() { return Id; }
- virtual void completeData(class Dwarf2BTF &Dwarf2BTF);
-};
-
-// BTF_KIND_INT
-class Die2BTFEntryInt : public Die2BTFEntry {
- uint32_t IntVal; // encoding, offset, bits
-
-public:
- Die2BTFEntryInt(const DIE &Die);
- void completeData(class Dwarf2BTF &Dwarf2BTF);
-};
-
-// BTF_KIND_ENUM
-class Die2BTFEntryEnum : public Die2BTFEntry {
- std::vector<struct btf_enum> EnumValues;
-
-public:
- Die2BTFEntryEnum(const DIE &Die);
- void completeData(class Dwarf2BTF &Dwarf2BTF);
-};
-
-// BTF_KIND_ARRAY
-class Die2BTFEntryArray : public Die2BTFEntry {
- struct btf_array ArrayInfo;
-
-public:
- Die2BTFEntryArray(const DIE &Die);
- void completeData(class Dwarf2BTF &Dwarf2BTF);
-};
-
-// BTF_KIND_STRUCT and BTF_KIND_UNION
-class Die2BTFEntryStruct : public Die2BTFEntry {
- std::vector<struct btf_member> Members;
-
-public:
- Die2BTFEntryStruct(const DIE &Die);
- void completeData(class Dwarf2BTF &Dwarf2BTF);
-};
-
-// BTF_KIND_FUNC and BTF_KIND_FUNC_PROTO
-class Die2BTFEntryFunc : public Die2BTFEntry {
- std::vector<uint32_t> Parameters;
-
-public:
- Die2BTFEntryFunc(const DIE &Die);
- void completeData(class Dwarf2BTF &Dwarf2BTF);
-};
-
-class Dwarf2BTF {
- std::vector<std::unique_ptr<Die2BTFEntry>> TypeEntries;
- std::map<DIE *, size_t> DieToIdMap;
- std::unique_ptr<MCBTFContext> BTFContext;
- MCContext &OuterCtx;
- bool IsLE;
-
-public:
- Dwarf2BTF(MCContext &Context, bool IsLittleEndian);
- bool isLittleEndian() { return IsLE; }
- void addDwarfCU(DwarfUnit *TheU);
- void finish();
- uint32_t getTypeIndex(DIE &Die) {
- DIE *DiePtr = const_cast<DIE *>(&Die);
- assert((DieToIdMap.find(DiePtr) != DieToIdMap.end()) &&
- "Die not added to in the BTFContext");
- return DieToIdMap[DiePtr];
- }
- size_t addBTFString(std::string S) { return BTFContext->addString(S); }
- void addBTFTypeEntry(std::unique_ptr<BTFTypeEntry> Entry);
- void addBTFFuncInfo(unsigned SecNameOff, BTFFuncInfo FuncInfo) {
- BTFContext->addFuncInfo(SecNameOff, FuncInfo);
- }
-
-private:
- void addTypeEntry(const DIE &Die);
- bool alreadyAdded(DIE &Die) {
- return DieToIdMap.find(const_cast<DIE *>(&Die)) != DieToIdMap.end();
- }
- void completeData();
-};
-
-} // namespace llvm
-#endif
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 184ec4dabe9..94e12658cfe 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -971,10 +971,6 @@ void DwarfDebug::endModule() {
// Emit the pubnames and pubtypes sections if requested.
emitDebugPubSections();
- const Triple &TT = Asm->TM.getTargetTriple();
- if (TT.getArch() == Triple::bpfel || TT.getArch() == Triple::bpfeb)
- emitBTFSection(TT.getArch() == Triple::bpfel);
-
// clean up.
// FIXME: AbstractVariables.clear();
}
@@ -2459,12 +2455,6 @@ MCDwarfDwoLineTable *DwarfDebug::getDwoLineTable(const DwarfCompileUnit &CU) {
return &SplitTypeUnitFileTable;
}
-void DwarfDebug::emitBTFSection(bool IsLittleEndian) {
- DwarfFile &Holder = useSplitDwarf() ? SkeletonHolder : InfoHolder;
-
- Holder.emitBTFSection(IsLittleEndian);
-}
-
uint64_t DwarfDebug::makeTypeSignature(StringRef Identifier) {
MD5 Hash;
Hash.update(Identifier);
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
index 1350317db02..fecf8056765 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -567,9 +567,6 @@ class DwarfDebug : public DebugHandlerBase {
/// Emit the reference to the section.
void emitSectionReference(const DwarfCompileUnit &CU);
- // Emit the BTF sections
- void emitBTFSection(bool IsLittleEndian);
-
protected:
/// Gather pre-function debug information.
void beginFunctionImpl(const MachineFunction *MF) override;
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfFile.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfFile.cpp
index 7ac16b34c4c..0ab9ea87c23 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfFile.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfFile.cpp
@@ -7,7 +7,6 @@
//
//===----------------------------------------------------------------------===//
-#include "Dwarf2BTF.h"
#include "DwarfFile.h"
#include "DwarfCompileUnit.h"
#include "DwarfDebug.h"
@@ -16,8 +15,6 @@
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/DIE.h"
#include "llvm/IR/DebugInfoMetadata.h"
-#include "llvm/MC/MCBTFContext.h"
-#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCStreamer.h"
#include <algorithm>
#include <cstdint>
@@ -91,13 +88,6 @@ void DwarfFile::emitStrings(MCSection *StrSection, MCSection *OffsetSection,
StrPool.emit(*Asm, StrSection, OffsetSection, UseRelativeOffsets);
}
-void DwarfFile::emitBTFSection(bool IsLittleEndian) {
- Dwarf2BTF Dwarf2BTF(Asm->OutContext, IsLittleEndian);
- for (auto &TheU : CUs)
- Dwarf2BTF.addDwarfCU(TheU.get());
- Dwarf2BTF.finish();
-}
-
bool DwarfFile::addScopeVariable(LexicalScope *LS, DbgVariable *Var) {
auto &ScopeVars = ScopeVariables[LS];
const DILocalVariable *DV = Var->getVariable();
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfFile.h b/llvm/lib/CodeGen/AsmPrinter/DwarfFile.h
index 114f98f725d..c315f44a8d8 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfFile.h
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfFile.h
@@ -114,9 +114,6 @@ public:
void emitStrings(MCSection *StrSection, MCSection *OffsetSection = nullptr,
bool UseRelativeOffsets = false);
- // Emit all data for the BTF section
- void emitBTFSection(bool IsLittleEndian);
-
/// Returns the string pool.
DwarfStringPool &getStringPool() { return StrPool; }
@@ -137,7 +134,9 @@ public:
return ScopeVariables;
}
- DenseMap<LexicalScope *, LabelList> &getScopeLabels() { return ScopeLabels; }
+ DenseMap<LexicalScope *, LabelList> &getScopeLabels() {
+ return ScopeLabels;
+ }
DenseMap<const MDNode *, DIE *> &getAbstractSPDies() {
return AbstractSPDies;
diff --git a/llvm/lib/MC/CMakeLists.txt b/llvm/lib/MC/CMakeLists.txt
index 85bf1616fd6..ba36d99e8f7 100644
--- a/llvm/lib/MC/CMakeLists.txt
+++ b/llvm/lib/MC/CMakeLists.txt
@@ -10,13 +10,11 @@ add_llvm_library(LLVMMC
MCAsmMacro.cpp
MCAsmStreamer.cpp
MCAssembler.cpp
- MCBTFContext.cpp
MCCodeEmitter.cpp
MCCodePadder.cpp
MCCodeView.cpp
MCContext.cpp
MCDwarf.cpp
- MCDwarf2BTF.cpp
MCELFObjectTargetWriter.cpp
MCELFStreamer.cpp
MCExpr.cpp
diff --git a/llvm/lib/MC/MCBTFContext.cpp b/llvm/lib/MC/MCBTFContext.cpp
deleted file mode 100644
index cb121c41552..00000000000
--- a/llvm/lib/MC/MCBTFContext.cpp
+++ /dev/null
@@ -1,229 +0,0 @@
-//===- lib/MC/MCBTFContext.cpp - Machine Code BTF Context -----------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/MC/MCBTFContext.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCObjectFileInfo.h"
-#include "llvm/MC/MCObjectStreamer.h"
-#include <cstdlib>
-#include <tuple>
-#include <utility>
-
-using namespace llvm;
-
-#define DEBUG_TYPE "btf"
-
-BTFTypeEntry::~BTFTypeEntry() {}
-
-void MCBTFContext::addTypeEntry(std::unique_ptr<BTFTypeEntry> Entry) {
- TypeEntries.push_back(std::move(Entry));
-}
-
-void MCBTFContext::dump(raw_ostream &OS) {
- OS << "Type Table:\n";
- for (size_t i = 0; i < TypeEntries.size(); i++) {
- auto TypeEntry = TypeEntries[i].get();
- TypeEntry->print(OS, *this);
- }
-
- OS << "\nString Table:\n";
- StringTable.showTable(OS);
-
- OS << "\nFuncInfo Table:\n";
- for (auto &FuncSec : FuncInfoTable) {
- OS << "sec_name_off=" << FuncSec.first << "\n";
- for (auto &FuncInfo : FuncSec.second) {
- OS << "\tinsn_offset=<Omitted> type_id=" << FuncInfo.TypeId << "\n";
- }
- }
-
- OS << "\nLineInfo Table:\n";
- for (auto &LineSec : LineInfoTable) {
- OS << "sec_name_off=" << LineSec.first << "\n";
- for (auto &LineInfo : LineSec.second) {
- OS << "\tinsn_offset=<Omitted> file_name_off=" << LineInfo.FileNameOff
- << " line_off=" << LineInfo.LineOff << " line_num=" << LineInfo.LineNum
- << " column_num=" << LineInfo.ColumnNum << "\n";
- }
- }
-}
-
-void MCBTFContext::emitCommonHeader(MCObjectStreamer *MCOS) {
- MCOS->EmitIntValue(BTF_MAGIC, 2);
- MCOS->EmitIntValue(BTF_VERSION, 1);
- MCOS->EmitIntValue(0, 1);
-}
-
-void MCBTFContext::emitBTFSection(MCObjectStreamer *MCOS) {
- MCContext &context = MCOS->getContext();
- MCOS->SwitchSection(context.getObjectFileInfo()->getBTFSection());
-
- // emit header
- emitCommonHeader(MCOS);
- MCOS->EmitIntValue(sizeof(struct btf_header), 4);
-
- uint32_t type_len = 0, str_len;
- for (auto &TypeEntry : TypeEntries)
- type_len += TypeEntry->getSize();
- str_len = StringTable.getSize();
-
- MCOS->EmitIntValue(0, 4);
- MCOS->EmitIntValue(type_len, 4);
- MCOS->EmitIntValue(type_len, 4);
- MCOS->EmitIntValue(str_len, 4);
-
- // emit type table
- for (auto &TypeEntry : TypeEntries)
- TypeEntry->emitData(MCOS);
-
- // emit string table
- for (auto &S : StringTable.getTable()) {
- for (auto C : S)
- MCOS->EmitIntValue(C, 1);
- MCOS->EmitIntValue('\0', 1);
- }
-}
-
-void MCBTFContext::emitBTFExtSection(MCObjectStreamer *MCOS) {
- MCContext &context = MCOS->getContext();
- MCOS->SwitchSection(context.getObjectFileInfo()->getBTFExtSection());
-
- // emit header
- emitCommonHeader(MCOS);
- MCOS->EmitIntValue(sizeof(struct btf_ext_header), 4);
-
- uint32_t func_len = 0, line_len = 0;
- for (auto &FuncSec : FuncInfoTable) {
- func_len += sizeof(struct btf_sec_func_info);
- func_len += FuncSec.second.size() * sizeof(struct bpf_func_info);
- }
- for (auto &LineSec : LineInfoTable) {
- line_len += sizeof(struct btf_sec_line_info);
- line_len += LineSec.second.size() * sizeof(struct bpf_line_info);
- }
-
- MCOS->EmitIntValue(0, 4);
- MCOS->EmitIntValue(func_len, 4);
- MCOS->EmitIntValue(func_len, 4);
- MCOS->EmitIntValue(line_len, 4);
-
- // emit func_info table
- for (const auto &FuncSec : FuncInfoTable) {
- MCOS->EmitIntValue(FuncSec.first, 4);
- MCOS->EmitIntValue(FuncSec.second.size(), 4);
- for (const auto &FuncInfo : FuncSec.second) {
- MCOS->EmitBTFAdvanceLineAddr(FuncInfo.Label, 4);
- MCOS->EmitIntValue(FuncInfo.TypeId, 4);
- }
- }
-
- // emit line_info table
- for (const auto &LineSec : LineInfoTable) {
- MCOS->EmitIntValue(LineSec.first, 4);
- MCOS->EmitIntValue(LineSec.second.size(), 4);
- for (const auto &LineInfo : LineSec.second) {
- MCOS->EmitBTFAdvanceLineAddr(LineInfo.Label, 4);
- MCOS->EmitIntValue(LineInfo.FileNameOff, 4);
- MCOS->EmitIntValue(LineInfo.LineOff, 4);
- MCOS->EmitIntValue(LineInfo.LineNum << 10 | LineInfo.ColumnNum, 4);
- }
- }
-}
-
-void MCBTFContext::emitAll(MCObjectStreamer *MCOS) {
- LLVM_DEBUG(dump(dbgs()));
- emitBTFSection(MCOS);
- emitBTFExtSection(MCOS);
-}
-
-void BTFTypeEntry::print(raw_ostream &OS, MCBTFContext &MCBTFContext) {
- OS << "[" << Id << "] " << btf_kind_str[BTF_INFO_KIND(BTFType.info)]
- << " name_off=" << BTFType.name_off
- << " info=" << format("0x%08lx", BTFType.info)
- << " size/type=" << BTFType.size << "\n";
-}
-
-void BTFTypeEntry::emitData(MCObjectStreamer *MCOS) {
- MCOS->EmitIntValue(BTFType.name_off, 4);
- MCOS->EmitIntValue(BTFType.info, 4);
- MCOS->EmitIntValue(BTFType.size, 4);
-}
-
-void BTFTypeEntryInt::print(raw_ostream &OS, MCBTFContext &MCBTFContext) {
- BTFTypeEntry::print(OS, MCBTFContext);
- OS << "\tdesc=" << format("0x%08lx", IntVal) << "\n";
-}
-
-void BTFTypeEntryInt::emitData(MCObjectStreamer *MCOS) {
- BTFTypeEntry::emitData(MCOS);
- MCOS->EmitIntValue(IntVal, 4);
-}
-
-void BTFTypeEntryEnum::print(raw_ostream &OS, MCBTFContext &MCBTFContext) {
- BTFTypeEntry::print(OS, MCBTFContext);
- for (size_t i = 0; i < BTF_INFO_VLEN(BTFType.info); i++) {
- auto &EnumValue = EnumValues[i];
- OS << "\tname_off=" << EnumValue.name_off << " value=" << EnumValue.val
- << "\n";
- }
-}
-
-void BTFTypeEntryEnum::emitData(MCObjectStreamer *MCOS) {
- BTFTypeEntry::emitData(MCOS);
- for (auto &EnumValue : EnumValues) {
- MCOS->EmitIntValue(EnumValue.name_off, 4);
- MCOS->EmitIntValue(EnumValue.val, 4);
- }
-}
-
-void BTFTypeEntryArray::print(raw_ostream &OS, MCBTFContext &MCBTFContext) {
- BTFTypeEntry::print(OS, MCBTFContext);
- OS << "\telem_type=" << format("0x%08lx", ArrayInfo.type)
- << " index_type=" << format("0x%08lx", ArrayInfo.index_type)
- << " num_element=" << ArrayInfo.nelems << "\n";
-}
-
-void BTFTypeEntryArray::emitData(MCObjectStreamer *MCOS) {
- BTFTypeEntry::emitData(MCOS);
- MCOS->EmitIntValue(ArrayInfo.type, 4);
- MCOS->EmitIntValue(ArrayInfo.index_type, 4);
- MCOS->EmitIntValue(ArrayInfo.nelems, 4);
-}
-
-void BTFTypeEntryStruct::print(raw_ostream &OS, MCBTFContext &MCBTFContext) {
- BTFTypeEntry::print(OS, MCBTFContext);
- for (size_t i = 0; i < BTF_INFO_VLEN(BTFType.info); i++) {
- auto &Member = Members[i];
- OS << "\tname_off=" << Member.name_off << " type=" << Member.type
- << " bit_offset=" << Member.offset << "\n";
- }
-}
-
-void BTFTypeEntryStruct::emitData(MCObjectStreamer *MCOS) {
- BTFTypeEntry::emitData(MCOS);
- for (auto &Member : Members) {
- MCOS->EmitIntValue(Member.name_off, 4);
- MCOS->EmitIntValue(Member.type, 4);
- MCOS->EmitIntValue(Member.offset, 4);
- }
-}
-
-void BTFTypeEntryFunc::print(raw_ostream &OS, MCBTFContext &MCBTFContext) {
- BTFTypeEntry::print(OS, MCBTFContext);
- for (size_t i = 0; i < BTF_INFO_VLEN(BTFType.info); i++) {
- auto Parameter = Parameters[i];
- OS << "\tparam_type=" << Parameter << "\n";
- }
-}
-
-void BTFTypeEntryFunc::emitData(MCObjectStreamer *MCOS) {
- BTFTypeEntry::emitData(MCOS);
- for (auto &Parameter : Parameters)
- MCOS->EmitIntValue(Parameter, 4);
-}
diff --git a/llvm/lib/MC/MCContext.cpp b/llvm/lib/MC/MCContext.cpp
index 18250a474b7..fab517075c5 100644
--- a/llvm/lib/MC/MCContext.cpp
+++ b/llvm/lib/MC/MCContext.cpp
@@ -17,7 +17,6 @@
#include "llvm/BinaryFormat/COFF.h"
#include "llvm/BinaryFormat/ELF.h"
#include "llvm/MC/MCAsmInfo.h"
-#include "llvm/MC/MCBTFContext.h"
#include "llvm/MC/MCCodeView.h"
#include "llvm/MC/MCDwarf.h"
#include "llvm/MC/MCExpr.h"
@@ -61,7 +60,7 @@ MCContext::MCContext(const MCAsmInfo *mai, const MCRegisterInfo *mri,
: SrcMgr(mgr), InlineSrcMgr(nullptr), MAI(mai), MRI(mri), MOFI(mofi),
Symbols(Allocator), UsedNames(Allocator),
CurrentDwarfLoc(0, 0, 0, DWARF2_FLAG_IS_STMT, 0, 0),
- AutoReset(DoAutoReset), BTFCtx(nullptr) {
+ AutoReset(DoAutoReset) {
SecureLogFile = AsSecureLogFileName;
if (SrcMgr && SrcMgr->getNumBuffers())
@@ -115,14 +114,6 @@ void MCContext::reset() {
GenDwarfFileNumber = 0;
HadError = false;
- BTFCtx.reset();
-}
-
-//===----------------------------------------------------------------------===//
-// BTFCtx Manipulation
-//===----------------------------------------------------------------------===//
-void MCContext::setBTFContext(std::unique_ptr<MCBTFContext> Ctx) {
- BTFCtx = std::move(Ctx);
}
//===----------------------------------------------------------------------===//
diff --git a/llvm/lib/MC/MCDwarf2BTF.cpp b/llvm/lib/MC/MCDwarf2BTF.cpp
deleted file mode 100644
index 9809a2153ec..00000000000
--- a/llvm/lib/MC/MCDwarf2BTF.cpp
+++ /dev/null
@@ -1,102 +0,0 @@
-//===- MCDwarf2BTF.cpp ---------------------------------------- *- C++ --*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "MCDwarf2BTF.h"
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/MC/MCAsmInfo.h"
-#include "llvm/MC/MCBTFContext.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCObjectStreamer.h"
-#include "llvm/MC/MCSection.h"
-#include "llvm/MC/MCSectionELF.h"
-#include "llvm/Support/Endian.h"
-#include "llvm/Support/EndianStream.h"
-#include <fstream>
-
-using namespace llvm;
-
-void MCDwarf2BTF::addFiles(MCObjectStreamer *MCOS, std::string &FileName,
- std::vector<FileContent> &Files) {
- std::vector<std::string> Content;
-
- std::ifstream Inputfile(FileName);
- std::string Line;
- Content.push_back(Line); // line 0 for empty string
- while (std::getline(Inputfile, Line))
- Content.push_back(Line);
-
- Files.push_back(FileContent(FileName, Content));
-}
-
-void MCDwarf2BTF::addLines(
- MCObjectStreamer *MCOS, StringRef &SectionName,
- std::vector<FileContent> &Files,
- const MCLineSection::MCDwarfLineEntryCollection &LineEntries) {
- MCContext &Context = MCOS->getContext();
- auto &BTFCxt = Context.getBTFContext();
-
- unsigned SecNameOff = BTFCxt->addString(SectionName.str());
- for (const MCDwarfLineEntry &LineEntry : LineEntries) {
- BTFLineInfo LineInfo;
- unsigned FileNum = LineEntry.getFileNum();
- unsigned Line = LineEntry.getLine();
-
- LineInfo.Label = LineEntry.getLabel();
- if (FileNum < Files.size()) {
- LineInfo.FileNameOff = BTFCxt->addString(Files[FileNum].first);
- if (Line < Files[FileNum].second.size())
- LineInfo.LineOff = BTFCxt->addString(Files[FileNum].second[Line]);
- else
- LineInfo.LineOff = 0;
- } else {
- LineInfo.FileNameOff = 0;
- LineInfo.LineOff = 0;
- }
- LineInfo.LineNum = Line;
- LineInfo.ColumnNum = LineEntry.getColumn();
- BTFCxt->addLineInfo(SecNameOff, LineInfo);
- }
-}
-
-void MCDwarf2BTF::addDwarfLineInfo(MCObjectStreamer *MCOS) {
- MCContext &Context = MCOS->getContext();
-
- auto &LineTables = Context.getMCDwarfLineTables();
- if (LineTables.empty())
- return;
-
- for (const auto &CUIDTablePair : LineTables) {
- std::vector<std::string> Dirs;
- std::vector<FileContent> Files;
-
- for (auto &Dir : CUIDTablePair.second.getMCDwarfDirs())
- Dirs.push_back(Dir);
- for (auto &File : CUIDTablePair.second.getMCDwarfFiles()) {
- std::string FileName;
- if (File.DirIndex == 0)
- FileName = File.Name;
- else
- FileName = Dirs[File.DirIndex - 1] + "/" + File.Name;
- MCDwarf2BTF::addFiles(MCOS, FileName, Files);
- }
- for (const auto &LineSec :
- CUIDTablePair.second.getMCLineSections().getMCLineEntries()) {
- MCSection *Section = LineSec.first;
- const MCLineSection::MCDwarfLineEntryCollection &LineEntries =
- LineSec.second;
-
- StringRef SectionName;
- if (MCSectionELF *SectionELF = dyn_cast<MCSectionELF>(Section))
- SectionName = SectionELF->getSectionName();
- else
- return;
- MCDwarf2BTF::addLines(MCOS, SectionName, Files, LineEntries);
- }
- }
-}
diff --git a/llvm/lib/MC/MCDwarf2BTF.h b/llvm/lib/MC/MCDwarf2BTF.h
deleted file mode 100644
index 69983374a09..00000000000
--- a/llvm/lib/MC/MCDwarf2BTF.h
+++ /dev/null
@@ -1,30 +0,0 @@
-//===- MCDwarf2BTF.h ------------------------------------------ *- C++ --*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-#ifndef LLVM_LIB_MC_MCDWARF2BTF_H
-#define LLVM_LIB_MC_MCDWARF2BTF_H
-
-#include "llvm/MC/MCDwarf.h"
-
-namespace llvm {
-
-using FileContent = std::pair<std::string, std::vector<std::string>>;
-
-class MCDwarf2BTF {
-public:
- static void addFiles(MCObjectStreamer *MCOS, std::string &FileName,
- std::vector<FileContent> &Files);
- static void
- addLines(MCObjectStreamer *MCOS, StringRef &SectionName,
- std::vector<FileContent> &Files,
- const MCLineSection::MCDwarfLineEntryCollection &LineEntries);
- static void addDwarfLineInfo(MCObjectStreamer *MCOS);
-};
-
-} // namespace llvm
-#endif
diff --git a/llvm/lib/MC/MCObjectFileInfo.cpp b/llvm/lib/MC/MCObjectFileInfo.cpp
index bddcf459ac0..edfccfcb9ed 100644
--- a/llvm/lib/MC/MCObjectFileInfo.cpp
+++ b/llvm/lib/MC/MCObjectFileInfo.cpp
@@ -468,9 +468,6 @@ void MCObjectFileInfo::initELFMCObjectFileInfo(const Triple &T, bool Large) {
Ctx->getELFSection(".eh_frame", EHSectionType, EHSectionFlags);
StackSizesSection = Ctx->getELFSection(".stack_sizes", ELF::SHT_PROGBITS, 0);
-
- BTFSection = Ctx->getELFSection(".BTF", ELF::SHT_PROGBITS, 0);
- BTFExtSection = Ctx->getELFSection(".BTF.ext", ELF::SHT_PROGBITS, 0);
}
void MCObjectFileInfo::initCOFFMCObjectFileInfo(const Triple &T) {
diff --git a/llvm/lib/MC/MCObjectStreamer.cpp b/llvm/lib/MC/MCObjectStreamer.cpp
index 4f74f4101c8..8c88db009bd 100644
--- a/llvm/lib/MC/MCObjectStreamer.cpp
+++ b/llvm/lib/MC/MCObjectStreamer.cpp
@@ -14,7 +14,6 @@
#include "llvm/MC/MCCodeEmitter.h"
#include "llvm/MC/MCCodeView.h"
#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCBTFContext.h"
#include "llvm/MC/MCDwarf.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCObjectWriter.h"
@@ -22,7 +21,6 @@
#include "llvm/MC/MCSymbol.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/SourceMgr.h"
-#include "MCDwarf2BTF.h"
using namespace llvm;
MCObjectStreamer::MCObjectStreamer(MCContext &Context,
@@ -441,31 +439,6 @@ void MCObjectStreamer::EmitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel,
insert(new MCDwarfCallFrameFragment(*AddrDelta));
}
-void MCObjectStreamer::EmitBTFAdvanceLineAddr(const MCSymbol *Label,
- unsigned Size) {
- const MCExpr *Value = MCSymbolRefExpr::create(Label, getContext());
- MCDataFragment *DF = getOrCreateDataFragment();
-
- // Avoid fixups when possible.
- int64_t AbsValue;
- SMLoc Loc;
-
- if (Value->evaluateAsAbsolute(AbsValue, getAssemblerPtr())) {
- if (!isUIntN(8 * Size, AbsValue) && !isIntN(8 * Size, AbsValue)) {
- getContext().reportError(
- Loc, "value evaluated as " + Twine(AbsValue) + " is out of range.");
- return;
- }
- EmitIntValue(AbsValue, Size);
- return;
- }
-
- DF->getFixups().push_back(
- MCFixup::create(DF->getContents().size(), Value,
- MCFixup::getKindForSize(Size, false), Loc));
- DF->getContents().resize(DF->getContents().size() + Size, 0);
-}
-
void MCObjectStreamer::EmitCVLocDirective(unsigned FunctionId, unsigned FileNo,
unsigned Line, unsigned Column,
bool PrologueEnd, bool IsStmt,
@@ -715,13 +688,6 @@ void MCObjectStreamer::FinishImpl() {
// Dump out the dwarf file & directory tables and line tables.
MCDwarfLineTable::Emit(this, getAssembler().getDWARFLinetableParams());
- auto &BTFCtx = getContext().getBTFContext();
- if (BTFCtx) {
- MCDwarf2BTF::addDwarfLineInfo(this);
- BTFCtx->emitAll(this);
- BTFCtx.reset();
- }
-
flushPendingLabels();
getAssembler().Finish();
}
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