//
//===----------------------------------------------------------------------===//
-#ifndef LLVM_READOBJ_ARMEHABI_PRINTER_H
-#define LLVM_READOBJ_ARMEHABI_PRINTER_H
+#ifndef LLVM_TOOLS_LLVM_READOBJ_ARMEHABIPRINTER_H
+#define LLVM_TOOLS_LLVM_READOBJ_ARMEHABIPRINTER_H
#include "Error.h"
#include "StreamWriter.h"
+#include "llvm/ADT/STLExtras.h"
#include "llvm/Object/ELF.h"
#include "llvm/Object/ELFTypes.h"
#include "llvm/Support/ARMEHABI.h"
+#include "llvm/Support/Debug.h"
#include "llvm/Support/Endian.h"
+#include "llvm/Support/Format.h"
#include "llvm/Support/type_traits.h"
namespace llvm {
namespace ARM {
namespace EHABI {
+
+class OpcodeDecoder {
+ StreamWriter &SW;
+ raw_ostream &OS;
+
+ struct RingEntry {
+ uint8_t Mask;
+ uint8_t Value;
+ void (OpcodeDecoder::*Routine)(const uint8_t *Opcodes, unsigned &OI);
+ };
+ static const RingEntry Ring[];
+
+ void Decode_00xxxxxx(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_01xxxxxx(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_1000iiii_iiiiiiii(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_10011101(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_10011111(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_1001nnnn(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_10100nnn(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_10101nnn(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_10110000(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_10110001_0000iiii(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_10110010_uleb128(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_10110011_sssscccc(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_101101nn(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_10111nnn(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_11000110_sssscccc(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_11000111_0000iiii(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_11001000_sssscccc(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_11001001_sssscccc(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_11001yyy(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_11000nnn(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_11010nnn(const uint8_t *Opcodes, unsigned &OI);
+ void Decode_11xxxyyy(const uint8_t *Opcodes, unsigned &OI);
+
+ void PrintGPR(uint16_t GPRMask);
+ void PrintRegisters(uint32_t Mask, StringRef Prefix);
+
+public:
+ OpcodeDecoder(StreamWriter &SW) : SW(SW), OS(SW.getOStream()) {}
+ void Decode(const uint8_t *Opcodes, off_t Offset, size_t Length);
+};
+
+const OpcodeDecoder::RingEntry OpcodeDecoder::Ring[] = {
+ { 0xc0, 0x00, &OpcodeDecoder::Decode_00xxxxxx },
+ { 0xc0, 0x40, &OpcodeDecoder::Decode_01xxxxxx },
+ { 0xf0, 0x80, &OpcodeDecoder::Decode_1000iiii_iiiiiiii },
+ { 0xff, 0x9d, &OpcodeDecoder::Decode_10011101 },
+ { 0xff, 0x9f, &OpcodeDecoder::Decode_10011111 },
+ { 0xf0, 0x90, &OpcodeDecoder::Decode_1001nnnn },
+ { 0xf8, 0xa0, &OpcodeDecoder::Decode_10100nnn },
+ { 0xf8, 0xa8, &OpcodeDecoder::Decode_10101nnn },
+ { 0xff, 0xb0, &OpcodeDecoder::Decode_10110000 },
+ { 0xff, 0xb1, &OpcodeDecoder::Decode_10110001_0000iiii },
+ { 0xff, 0xb2, &OpcodeDecoder::Decode_10110010_uleb128 },
+ { 0xff, 0xb3, &OpcodeDecoder::Decode_10110011_sssscccc },
+ { 0xfc, 0xb4, &OpcodeDecoder::Decode_101101nn },
+ { 0xf8, 0xb8, &OpcodeDecoder::Decode_10111nnn },
+ { 0xff, 0xc6, &OpcodeDecoder::Decode_11000110_sssscccc },
+ { 0xff, 0xc7, &OpcodeDecoder::Decode_11000111_0000iiii },
+ { 0xff, 0xc8, &OpcodeDecoder::Decode_11001000_sssscccc },
+ { 0xff, 0xc9, &OpcodeDecoder::Decode_11001001_sssscccc },
+ { 0xc8, 0xc8, &OpcodeDecoder::Decode_11001yyy },
+ { 0xf8, 0xc0, &OpcodeDecoder::Decode_11000nnn },
+ { 0xf8, 0xd0, &OpcodeDecoder::Decode_11010nnn },
+ { 0xc0, 0xc0, &OpcodeDecoder::Decode_11xxxyyy },
+};
+
+void OpcodeDecoder::Decode_00xxxxxx(const uint8_t *Opcodes, unsigned &OI) {
+ uint8_t Opcode = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X ; vsp = vsp + %u\n", Opcode,
+ ((Opcode & 0x3f) << 2) + 4);
+}
+void OpcodeDecoder::Decode_01xxxxxx(const uint8_t *Opcodes, unsigned &OI) {
+ uint8_t Opcode = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X ; vsp = vsp - %u\n", Opcode,
+ ((Opcode & 0x3f) << 2) + 4);
+}
+void OpcodeDecoder::Decode_1000iiii_iiiiiiii(const uint8_t *Opcodes,
+ unsigned &OI) {
+ uint8_t Opcode0 = Opcodes[OI++ ^ 3];
+ uint8_t Opcode1 = Opcodes[OI++ ^ 3];
+
+ uint16_t GPRMask = (Opcode1 << 4) | ((Opcode0 & 0x0f) << 12);
+ SW.startLine()
+ << format("0x%02X 0x%02X ; %s",
+ Opcode0, Opcode1, GPRMask ? "pop " : "refuse to unwind");
+ if (GPRMask)
+ PrintGPR(GPRMask);
+ OS << '\n';
+}
+void OpcodeDecoder::Decode_10011101(const uint8_t *Opcodes, unsigned &OI) {
+ uint8_t Opcode = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X ; reserved (ARM MOVrr)\n", Opcode);
+}
+void OpcodeDecoder::Decode_10011111(const uint8_t *Opcodes, unsigned &OI) {
+ uint8_t Opcode = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X ; reserved (WiMMX MOVrr)\n", Opcode);
+}
+void OpcodeDecoder::Decode_1001nnnn(const uint8_t *Opcodes, unsigned &OI) {
+ uint8_t Opcode = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X ; vsp = r%u\n", Opcode, (Opcode & 0x0f));
+}
+void OpcodeDecoder::Decode_10100nnn(const uint8_t *Opcodes, unsigned &OI) {
+ uint8_t Opcode = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X ; pop ", Opcode);
+ PrintGPR((((1 << ((Opcode & 0x7) + 1)) - 1) << 4));
+ OS << '\n';
+}
+void OpcodeDecoder::Decode_10101nnn(const uint8_t *Opcodes, unsigned &OI) {
+ uint8_t Opcode = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X ; pop ", Opcode);
+ PrintGPR((((1 << ((Opcode & 0x7) + 1)) - 1) << 4) | (1 << 14));
+ OS << '\n';
+}
+void OpcodeDecoder::Decode_10110000(const uint8_t *Opcodes, unsigned &OI) {
+ uint8_t Opcode = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X ; finish\n", Opcode);
+}
+void OpcodeDecoder::Decode_10110001_0000iiii(const uint8_t *Opcodes,
+ unsigned &OI) {
+ uint8_t Opcode0 = Opcodes[OI++ ^ 3];
+ uint8_t Opcode1 = Opcodes[OI++ ^ 3];
+
+ SW.startLine()
+ << format("0x%02X 0x%02X ; %s", Opcode0, Opcode1,
+ ((Opcode1 & 0xf0) || Opcode1 == 0x00) ? "spare" : "pop ");
+ if (((Opcode1 & 0xf0) == 0x00) && Opcode1)
+ PrintGPR((Opcode1 & 0x0f));
+ OS << '\n';
+}
+void OpcodeDecoder::Decode_10110010_uleb128(const uint8_t *Opcodes,
+ unsigned &OI) {
+ uint8_t Opcode = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X ", Opcode);
+
+ SmallVector<uint8_t, 4> ULEB;
+ do { ULEB.push_back(Opcodes[OI ^ 3]); } while (Opcodes[OI++ ^ 3] & 0x80);
+
+ for (unsigned BI = 0, BE = ULEB.size(); BI != BE; ++BI)
+ OS << format("0x%02X ", ULEB[BI]);
+
+ uint64_t Value = 0;
+ for (unsigned BI = 0, BE = ULEB.size(); BI != BE; ++BI)
+ Value = Value | ((ULEB[BI] & 0x7f) << (7 * BI));
+
+ OS << format("; vsp = vsp + %" PRIu64 "\n", 0x204 + (Value << 2));
+}
+void OpcodeDecoder::Decode_10110011_sssscccc(const uint8_t *Opcodes,
+ unsigned &OI) {
+ uint8_t Opcode0 = Opcodes[OI++ ^ 3];
+ uint8_t Opcode1 = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X 0x%02X ; pop ", Opcode0, Opcode1);
+ uint8_t Start = ((Opcode1 & 0xf0) >> 4);
+ uint8_t Count = ((Opcode1 & 0x0f) >> 0);
+ PrintRegisters((((1 << (Count + 1)) - 1) << Start), "d");
+ OS << '\n';
+}
+void OpcodeDecoder::Decode_101101nn(const uint8_t *Opcodes, unsigned &OI) {
+ uint8_t Opcode = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X ; spare\n", Opcode);
+}
+void OpcodeDecoder::Decode_10111nnn(const uint8_t *Opcodes, unsigned &OI) {
+ uint8_t Opcode = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X ; pop ", Opcode);
+ PrintRegisters((((1 << ((Opcode & 0x07) + 1)) - 1) << 8), "d");
+ OS << '\n';
+}
+void OpcodeDecoder::Decode_11000110_sssscccc(const uint8_t *Opcodes,
+ unsigned &OI) {
+ uint8_t Opcode0 = Opcodes[OI++ ^ 3];
+ uint8_t Opcode1 = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X 0x%02X ; pop ", Opcode0, Opcode1);
+ uint8_t Start = ((Opcode1 & 0xf0) >> 4);
+ uint8_t Count = ((Opcode1 & 0x0f) >> 0);
+ PrintRegisters((((1 << (Count + 1)) - 1) << Start), "wR");
+ OS << '\n';
+}
+void OpcodeDecoder::Decode_11000111_0000iiii(const uint8_t *Opcodes,
+ unsigned &OI) {
+ uint8_t Opcode0 = Opcodes[OI++ ^ 3];
+ uint8_t Opcode1 = Opcodes[OI++ ^ 3];
+ SW.startLine()
+ << format("0x%02X 0x%02X ; %s", Opcode0, Opcode1,
+ ((Opcode1 & 0xf0) || Opcode1 == 0x00) ? "spare" : "pop ");
+ if ((Opcode1 & 0xf0) == 0x00 && Opcode1)
+ PrintRegisters(Opcode1 & 0x0f, "wCGR");
+ OS << '\n';
+}
+void OpcodeDecoder::Decode_11001000_sssscccc(const uint8_t *Opcodes,
+ unsigned &OI) {
+ uint8_t Opcode0 = Opcodes[OI++ ^ 3];
+ uint8_t Opcode1 = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X 0x%02X ; pop ", Opcode0, Opcode1);
+ uint8_t Start = 16 + ((Opcode1 & 0xf0) >> 4);
+ uint8_t Count = ((Opcode1 & 0x0f) >> 0);
+ PrintRegisters((((1 << (Count + 1)) - 1) << Start), "d");
+ OS << '\n';
+}
+void OpcodeDecoder::Decode_11001001_sssscccc(const uint8_t *Opcodes,
+ unsigned &OI) {
+ uint8_t Opcode0 = Opcodes[OI++ ^ 3];
+ uint8_t Opcode1 = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X 0x%02X ; pop ", Opcode0, Opcode1);
+ uint8_t Start = ((Opcode1 & 0xf0) >> 4);
+ uint8_t Count = ((Opcode1 & 0x0f) >> 0);
+ PrintRegisters((((1 << (Count + 1)) - 1) << Start), "d");
+ OS << '\n';
+}
+void OpcodeDecoder::Decode_11001yyy(const uint8_t *Opcodes, unsigned &OI) {
+ uint8_t Opcode = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X ; spare\n", Opcode);
+}
+void OpcodeDecoder::Decode_11000nnn(const uint8_t *Opcodes, unsigned &OI) {
+ uint8_t Opcode = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X ; pop ", Opcode);
+ PrintRegisters((((1 << ((Opcode & 0x07) + 1)) - 1) << 10), "wR");
+ OS << '\n';
+}
+void OpcodeDecoder::Decode_11010nnn(const uint8_t *Opcodes, unsigned &OI) {
+ uint8_t Opcode = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X ; pop ", Opcode);
+ PrintRegisters((((1 << ((Opcode & 0x07) + 1)) - 1) << 8), "d");
+ OS << '\n';
+}
+void OpcodeDecoder::Decode_11xxxyyy(const uint8_t *Opcodes, unsigned &OI) {
+ uint8_t Opcode = Opcodes[OI++ ^ 3];
+ SW.startLine() << format("0x%02X ; spare\n", Opcode);
+}
+
+void OpcodeDecoder::PrintGPR(uint16_t GPRMask) {
+ static const char *GPRRegisterNames[16] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10",
+ "fp", "ip", "sp", "lr", "pc"
+ };
+
+ OS << '{';
+ bool Comma = false;
+ for (unsigned RI = 0, RE = 17; RI < RE; ++RI) {
+ if (GPRMask & (1 << RI)) {
+ if (Comma)
+ OS << ", ";
+ OS << GPRRegisterNames[RI];
+ Comma = true;
+ }
+ }
+ OS << '}';
+}
+
+void OpcodeDecoder::PrintRegisters(uint32_t VFPMask, StringRef Prefix) {
+ OS << '{';
+ bool Comma = false;
+ for (unsigned RI = 0, RE = 32; RI < RE; ++RI) {
+ if (VFPMask & (1 << RI)) {
+ if (Comma)
+ OS << ", ";
+ OS << Prefix << RI;
+ Comma = true;
+ }
+ }
+ OS << '}';
+}
+
+void OpcodeDecoder::Decode(const uint8_t *Opcodes, off_t Offset, size_t Length) {
+ for (unsigned OCI = Offset; OCI < Length + Offset; ) {
+ bool Decoded = false;
+ for (unsigned REI = 0, REE = array_lengthof(Ring);
+ REI != REE && !Decoded; ++REI) {
+ if ((Opcodes[OCI ^ 3] & Ring[REI].Mask) == Ring[REI].Value) {
+ (this->*Ring[REI].Routine)(Opcodes, OCI);
+ Decoded = true;
+ break;
+ }
+ }
+ if (!Decoded)
+ SW.startLine() << format("0x%02X ; reserved\n", Opcodes[OCI++ ^ 3]);
+ }
+}
+
template <typename ET>
class PrinterContext {
StreamWriter &SW;
typedef typename object::ELFFile<ET>::Elf_Shdr Elf_Shdr;
typedef typename object::ELFFile<ET>::Elf_Rel_Iter Elf_Rel_iterator;
- typedef typename object::ELFFile<ET>::Elf_Sym_Iter Elf_Sym_iterator;
typedef typename object::ELFFile<ET>::Elf_Shdr_Iter Elf_Shdr_iterator;
static const size_t IndexTableEntrySize;
const size_t PrinterContext<ET>::IndexTableEntrySize = 8;
template <typename ET>
-ErrorOr<StringRef> PrinterContext<ET>::FunctionAtAddress(unsigned Section,
- uint64_t Address) const {
- for (Elf_Sym_iterator SI = ELF->begin_symbols(), SE = ELF->end_symbols();
- SI != SE; ++SI)
- if (SI->st_shndx == Section && SI->st_value == Address &&
- SI->getType() == ELF::STT_FUNC)
- return ELF->getSymbolName(SI);
+ErrorOr<StringRef>
+PrinterContext<ET>::FunctionAtAddress(unsigned Section,
+ uint64_t Address) const {
+ for (const Elf_Sym &Sym : ELF->symbols())
+ if (Sym.st_shndx == Section && Sym.st_value == Address &&
+ Sym.getType() == ELF::STT_FUNC)
+ return ELF->getSymbolName(&Sym, false);
return readobj_error::unknown_symbol;
}
/// handling table. Use this symbol to recover the actual exception handling
/// table.
- for (Elf_Shdr_iterator SI = ELF->begin_sections(), SE = ELF->end_sections();
- SI != SE; ++SI) {
- if (SI->sh_type == ELF::SHT_REL && SI->sh_info == IndexSectionIndex) {
- for (Elf_Rel_iterator RI = ELF->begin_rel(&*SI), RE = ELF->end_rel(&*SI);
+ for (const Elf_Shdr &Sec : ELF->sections()) {
+ if (Sec.sh_type == ELF::SHT_REL && Sec.sh_info == IndexSectionIndex) {
+ for (Elf_Rel_iterator RI = ELF->rel_begin(&Sec), RE = ELF->rel_end(&Sec);
RI != RE; ++RI) {
- if (RI->r_offset == IndexTableOffset) {
+ if (RI->r_offset == static_cast<unsigned>(IndexTableOffset)) {
typename object::ELFFile<ET>::Elf_Rela RelA;
RelA.r_offset = RI->r_offset;
RelA.r_info = RI->r_info;
RelA.r_addend = 0;
std::pair<const Elf_Shdr *, const Elf_Sym *> Symbol =
- ELF->getRelocationSymbol(&(*SI), &RelA);
+ ELF->getRelocationSymbol(&Sec, &RelA);
return ELF->getSection(Symbol.second);
}
}
}
}
- return NULL;
+ return nullptr;
}
template <typename ET>
switch (PersonalityIndex) {
case AEABI_UNWIND_CPP_PR0:
- llvm_unreachable("Personality 0 should be compact inline!");
+ PrintOpcodes(Contents->data() + TableEntryOffset, 3, 1);
break;
case AEABI_UNWIND_CPP_PR1:
case AEABI_UNWIND_CPP_PR2:
void PrinterContext<ET>::PrintOpcodes(const uint8_t *Entry,
size_t Length, off_t Offset) const {
ListScope OCC(SW, "Opcodes");
- for (unsigned OCI = Offset; OCI < Length + Offset; OCI++)
- SW.printHex("Opcode", Entry[OCI ^ 0x3]);
+ OpcodeDecoder(OCC.W).Decode(Entry, Offset, Length);
}
template <typename ET>
DictScope UI(SW, "UnwindInformation");
int SectionIndex = 0;
- for (Elf_Shdr_iterator SI = ELF->begin_sections(), SE = ELF->end_sections();
- SI != SE; ++SI, ++SectionIndex) {
- if (SI->sh_type == ELF::SHT_ARM_EXIDX) {
- const Elf_Shdr *IT = &(*SI);
-
+ for (const Elf_Shdr &Sec : ELF->sections()) {
+ if (Sec.sh_type == ELF::SHT_ARM_EXIDX) {
DictScope UIT(SW, "UnwindIndexTable");
SW.printNumber("SectionIndex", SectionIndex);
- if (ErrorOr<StringRef> SectionName = ELF->getSectionName(IT))
+ if (ErrorOr<StringRef> SectionName = ELF->getSectionName(&Sec))
SW.printString("SectionName", *SectionName);
- SW.printHex("SectionOffset", IT->sh_offset);
+ SW.printHex("SectionOffset", Sec.sh_offset);
- PrintIndexTable(SectionIndex, IT);
+ PrintIndexTable(SectionIndex, &Sec);
}
+ ++SectionIndex;
}
}
}
projects / oota-llvm.git / blobdiff