/src/keystone/llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp

Source
//===-- PPCELFObjectWriter.cpp - PPC ELF Writer ---------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#include "MCTargetDesc/PPCMCTargetDesc.h"
#include "MCTargetDesc/PPCFixupKinds.h"
#include "MCTargetDesc/PPCMCExpr.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/MC/MCELFObjectWriter.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCSymbolELF.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Support/ErrorHandling.h"

using namespace llvm_ks;

namespace {
  class PPCELFObjectWriter : public MCELFObjectTargetWriter {
  public:
    PPCELFObjectWriter(bool Is64Bit, uint8_t OSABI);

  protected:
    unsigned getRelocType(MCContext &Ctx, const MCValue &Target,
                          const MCFixup &Fixup, bool IsPCRel) const override;

    bool needsRelocateWithSymbol(const MCSymbol &Sym,
                                 unsigned Type) const override;
  };
}

PPCELFObjectWriter::PPCELFObjectWriter(bool Is64Bit, uint8_t OSABI)
  : MCELFObjectTargetWriter(Is64Bit, OSABI,
                            Is64Bit ?  ELF::EM_PPC64 : ELF::EM_PPC,
                            /*HasRelocationAddend*/ true) {}

static MCSymbolRefExpr::VariantKind getAccessVariant(const MCValue &Target,
                                                     const MCFixup &Fixup) {
  const MCExpr *Expr = Fixup.getValue();

  if (Expr->getKind() != MCExpr::Target)
    return Target.getAccessVariant();

  switch (cast<PPCMCExpr>(Expr)->getKind()) {
  case PPCMCExpr::VK_PPC_None:
    return MCSymbolRefExpr::VK_None;
  case PPCMCExpr::VK_PPC_LO:
    return MCSymbolRefExpr::VK_PPC_LO;
  case PPCMCExpr::VK_PPC_HI:
    return MCSymbolRefExpr::VK_PPC_HI;
  case PPCMCExpr::VK_PPC_HA:
    return MCSymbolRefExpr::VK_PPC_HA;
  case PPCMCExpr::VK_PPC_HIGHERA:
    return MCSymbolRefExpr::VK_PPC_HIGHERA;
  case PPCMCExpr::VK_PPC_HIGHER:
    return MCSymbolRefExpr::VK_PPC_HIGHER;
  case PPCMCExpr::VK_PPC_HIGHEST:
    return MCSymbolRefExpr::VK_PPC_HIGHEST;
  case PPCMCExpr::VK_PPC_HIGHESTA:
    return MCSymbolRefExpr::VK_PPC_HIGHESTA;
  }
  llvm_unreachable("unknown PPCMCExpr kind");
}

unsigned PPCELFObjectWriter::getRelocType(MCContext &Ctx, const MCValue &Target,
                                          const MCFixup &Fixup,
                                          bool IsPCRel) const {
  MCSymbolRefExpr::VariantKind Modifier = getAccessVariant(Target, Fixup);

  // determine the type of the relocation
  unsigned Type;
  if (IsPCRel) {
    switch ((unsigned)Fixup.getKind()) {
    default:
      llvm_unreachable("Unimplemented");
    case PPC::fixup_ppc_br24:
    case PPC::fixup_ppc_br24abs:
      switch (Modifier) {
      default: llvm_unreachable("Unsupported Modifier");
      case MCSymbolRefExpr::VK_None:
        Type = ELF::R_PPC_REL24;
        break;
      case MCSymbolRefExpr::VK_PLT:
        Type = ELF::R_PPC_PLTREL24;
        break;
      case MCSymbolRefExpr::VK_PPC_LOCAL:
        Type = ELF::R_PPC_LOCAL24PC;
        break;
      }
      break;
    case PPC::fixup_ppc_brcond14:
    case PPC::fixup_ppc_brcond14abs:
      Type = ELF::R_PPC_REL14;
      break;
    case PPC::fixup_ppc_half16:
      switch (Modifier) {
      default: llvm_unreachable("Unsupported Modifier");
      case MCSymbolRefExpr::VK_None:
        Type = ELF::R_PPC_REL16;
        break;
      case MCSymbolRefExpr::VK_PPC_LO:
        Type = ELF::R_PPC_REL16_LO;
        break;
      case MCSymbolRefExpr::VK_PPC_HI:
        Type = ELF::R_PPC_REL16_HI;
        break;
      case MCSymbolRefExpr::VK_PPC_HA:
        Type = ELF::R_PPC_REL16_HA;
        break;
      }
      break;
    case PPC::fixup_ppc_half16ds:
      Target.print(errs());
      errs() << '\n';
      report_fatal_error("Invalid PC-relative half16ds relocation");
    case FK_Data_4:
    case FK_PCRel_4:
      Type = ELF::R_PPC_REL32;
      break;
    case FK_Data_8:
    case FK_PCRel_8:
      Type = ELF::R_PPC64_REL64;
      break;
    }
  } else {
    switch ((unsigned)Fixup.getKind()) {
      default: llvm_unreachable("invalid fixup kind!");
    case PPC::fixup_ppc_br24abs:
      Type = ELF::R_PPC_ADDR24;
      break;
    case PPC::fixup_ppc_brcond14abs:
      Type = ELF::R_PPC_ADDR14; // XXX: or BRNTAKEN?_
      break;
    case PPC::fixup_ppc_half16:
      switch (Modifier) {
      default: llvm_unreachable("Unsupported Modifier");
      case MCSymbolRefExpr::VK_None:
        Type = ELF::R_PPC_ADDR16;
        break;
      case MCSymbolRefExpr::VK_PPC_LO:
        Type = ELF::R_PPC_ADDR16_LO;
        break;
      case MCSymbolRefExpr::VK_PPC_HI:
        Type = ELF::R_PPC_ADDR16_HI;
        break;
      case MCSymbolRefExpr::VK_PPC_HA:
        Type = ELF::R_PPC_ADDR16_HA;
        break;
      case MCSymbolRefExpr::VK_PPC_HIGHER:
        Type = ELF::R_PPC64_ADDR16_HIGHER;
        break;
      case MCSymbolRefExpr::VK_PPC_HIGHERA:
        Type = ELF::R_PPC64_ADDR16_HIGHERA;
        break;
      case MCSymbolRefExpr::VK_PPC_HIGHEST:
        Type = ELF::R_PPC64_ADDR16_HIGHEST;
        break;
      case MCSymbolRefExpr::VK_PPC_HIGHESTA:
        Type = ELF::R_PPC64_ADDR16_HIGHESTA;
        break;
      case MCSymbolRefExpr::VK_GOT:
        Type = ELF::R_PPC_GOT16;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_LO:
        Type = ELF::R_PPC_GOT16_LO;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_HI:
        Type = ELF::R_PPC_GOT16_HI;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_HA:
        Type = ELF::R_PPC_GOT16_HA;
        break;
      case MCSymbolRefExpr::VK_PPC_TOC:
        Type = ELF::R_PPC64_TOC16;
        break;
      case MCSymbolRefExpr::VK_PPC_TOC_LO:
        Type = ELF::R_PPC64_TOC16_LO;
        break;
      case MCSymbolRefExpr::VK_PPC_TOC_HI:
        Type = ELF::R_PPC64_TOC16_HI;
        break;
      case MCSymbolRefExpr::VK_PPC_TOC_HA:
        Type = ELF::R_PPC64_TOC16_HA;
        break;
      case MCSymbolRefExpr::VK_PPC_TPREL:
        Type = ELF::R_PPC_TPREL16;
        break;
      case MCSymbolRefExpr::VK_PPC_TPREL_LO:
        Type = ELF::R_PPC_TPREL16_LO;
        break;
      case MCSymbolRefExpr::VK_PPC_TPREL_HI:
        Type = ELF::R_PPC_TPREL16_HI;
        break;
      case MCSymbolRefExpr::VK_PPC_TPREL_HA:
        Type = ELF::R_PPC_TPREL16_HA;
        break;
      case MCSymbolRefExpr::VK_PPC_TPREL_HIGHER:
        Type = ELF::R_PPC64_TPREL16_HIGHER;
        break;
      case MCSymbolRefExpr::VK_PPC_TPREL_HIGHERA:
        Type = ELF::R_PPC64_TPREL16_HIGHERA;
        break;
      case MCSymbolRefExpr::VK_PPC_TPREL_HIGHEST:
        Type = ELF::R_PPC64_TPREL16_HIGHEST;
        break;
      case MCSymbolRefExpr::VK_PPC_TPREL_HIGHESTA:
        Type = ELF::R_PPC64_TPREL16_HIGHESTA;
        break;
      case MCSymbolRefExpr::VK_PPC_DTPREL:
        Type = ELF::R_PPC64_DTPREL16;
        break;
      case MCSymbolRefExpr::VK_PPC_DTPREL_LO:
        Type = ELF::R_PPC64_DTPREL16_LO;
        break;
      case MCSymbolRefExpr::VK_PPC_DTPREL_HI:
        Type = ELF::R_PPC64_DTPREL16_HI;
        break;
      case MCSymbolRefExpr::VK_PPC_DTPREL_HA:
        Type = ELF::R_PPC64_DTPREL16_HA;
        break;
      case MCSymbolRefExpr::VK_PPC_DTPREL_HIGHER:
        Type = ELF::R_PPC64_DTPREL16_HIGHER;
        break;
      case MCSymbolRefExpr::VK_PPC_DTPREL_HIGHERA:
        Type = ELF::R_PPC64_DTPREL16_HIGHERA;
        break;
      case MCSymbolRefExpr::VK_PPC_DTPREL_HIGHEST:
        Type = ELF::R_PPC64_DTPREL16_HIGHEST;
        break;
      case MCSymbolRefExpr::VK_PPC_DTPREL_HIGHESTA:
        Type = ELF::R_PPC64_DTPREL16_HIGHESTA;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_TLSGD:
        if (is64Bit())
          Type = ELF::R_PPC64_GOT_TLSGD16;
        else
          Type = ELF::R_PPC_GOT_TLSGD16;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_TLSGD_LO:
        Type = ELF::R_PPC64_GOT_TLSGD16_LO;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_TLSGD_HI:
        Type = ELF::R_PPC64_GOT_TLSGD16_HI;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_TLSGD_HA:
        Type = ELF::R_PPC64_GOT_TLSGD16_HA;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_TLSLD:
        if (is64Bit())
          Type = ELF::R_PPC64_GOT_TLSLD16;
        else
          Type = ELF::R_PPC_GOT_TLSLD16;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_TLSLD_LO:
        Type = ELF::R_PPC64_GOT_TLSLD16_LO;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_TLSLD_HI:
        Type = ELF::R_PPC64_GOT_TLSLD16_HI;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_TLSLD_HA:
        Type = ELF::R_PPC64_GOT_TLSLD16_HA;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_TPREL:
        /* We don't have R_PPC64_GOT_TPREL16, but since GOT offsets
           are always 4-aligned, we can use R_PPC64_GOT_TPREL16_DS.  */
        Type = ELF::R_PPC64_GOT_TPREL16_DS;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_TPREL_LO:
        /* We don't have R_PPC64_GOT_TPREL16_LO, but since GOT offsets
           are always 4-aligned, we can use R_PPC64_GOT_TPREL16_LO_DS.  */
        Type = ELF::R_PPC64_GOT_TPREL16_LO_DS;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_TPREL_HI:
        Type = ELF::R_PPC64_GOT_TPREL16_HI;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_DTPREL:
        /* We don't have R_PPC64_GOT_DTPREL16, but since GOT offsets
           are always 4-aligned, we can use R_PPC64_GOT_DTPREL16_DS.  */
        Type = ELF::R_PPC64_GOT_DTPREL16_DS;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_DTPREL_LO:
        /* We don't have R_PPC64_GOT_DTPREL16_LO, but since GOT offsets
           are always 4-aligned, we can use R_PPC64_GOT_DTPREL16_LO_DS.  */
        Type = ELF::R_PPC64_GOT_DTPREL16_LO_DS;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_TPREL_HA:
        Type = ELF::R_PPC64_GOT_TPREL16_HA;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_DTPREL_HI:
        Type = ELF::R_PPC64_GOT_DTPREL16_HI;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_DTPREL_HA:
        Type = ELF::R_PPC64_GOT_DTPREL16_HA;
        break;
      }
      break;
    case PPC::fixup_ppc_half16ds:
      switch (Modifier) {
      default: llvm_unreachable("Unsupported Modifier");
      case MCSymbolRefExpr::VK_None:
        Type = ELF::R_PPC64_ADDR16_DS;
        break;
      case MCSymbolRefExpr::VK_PPC_LO:
        Type = ELF::R_PPC64_ADDR16_LO_DS;
        break;
      case MCSymbolRefExpr::VK_GOT:
        Type = ELF::R_PPC64_GOT16_DS;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_LO:
        Type = ELF::R_PPC64_GOT16_LO_DS;
        break;
      case MCSymbolRefExpr::VK_PPC_TOC:
        Type = ELF::R_PPC64_TOC16_DS;
        break;
      case MCSymbolRefExpr::VK_PPC_TOC_LO:
        Type = ELF::R_PPC64_TOC16_LO_DS;
        break;
      case MCSymbolRefExpr::VK_PPC_TPREL:
        Type = ELF::R_PPC64_TPREL16_DS;
        break;
      case MCSymbolRefExpr::VK_PPC_TPREL_LO:
        Type = ELF::R_PPC64_TPREL16_LO_DS;
        break;
      case MCSymbolRefExpr::VK_PPC_DTPREL:
        Type = ELF::R_PPC64_DTPREL16_DS;
        break;
      case MCSymbolRefExpr::VK_PPC_DTPREL_LO:
        Type = ELF::R_PPC64_DTPREL16_LO_DS;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_TPREL:
        Type = ELF::R_PPC64_GOT_TPREL16_DS;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_TPREL_LO:
        Type = ELF::R_PPC64_GOT_TPREL16_LO_DS;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_DTPREL:
        Type = ELF::R_PPC64_GOT_DTPREL16_DS;
        break;
      case MCSymbolRefExpr::VK_PPC_GOT_DTPREL_LO:
        Type = ELF::R_PPC64_GOT_DTPREL16_LO_DS;
        break;
      }
      break;
    case PPC::fixup_ppc_nofixup:
      switch (Modifier) {
      default: llvm_unreachable("Unsupported Modifier");
      case MCSymbolRefExpr::VK_PPC_TLSGD:
        if (is64Bit())
          Type = ELF::R_PPC64_TLSGD;
        else
          Type = ELF::R_PPC_TLSGD;
        break;
      case MCSymbolRefExpr::VK_PPC_TLSLD:
        if (is64Bit())
          Type = ELF::R_PPC64_TLSLD;
        else
          Type = ELF::R_PPC_TLSLD;
        break;
      case MCSymbolRefExpr::VK_PPC_TLS:
        if (is64Bit())
          Type = ELF::R_PPC64_TLS;
        else
          Type = ELF::R_PPC_TLS;
        break;
      }
      break;
    case FK_Data_8:
      switch (Modifier) {
      default: llvm_unreachable("Unsupported Modifier");
      case MCSymbolRefExpr::VK_PPC_TOCBASE:
        Type = ELF::R_PPC64_TOC;
        break;
      case MCSymbolRefExpr::VK_None:
        Type = ELF::R_PPC64_ADDR64;
        break;
      case MCSymbolRefExpr::VK_PPC_DTPMOD:
        Type = ELF::R_PPC64_DTPMOD64;
        break;
      case MCSymbolRefExpr::VK_PPC_TPREL:
        Type = ELF::R_PPC64_TPREL64;
        break;
      case MCSymbolRefExpr::VK_PPC_DTPREL:
        Type = ELF::R_PPC64_DTPREL64;
        break;
      }
      break;
    case FK_Data_4:
      Type = ELF::R_PPC_ADDR32;
      break;
    case FK_Data_2:
      Type = ELF::R_PPC_ADDR16;
      break;
    }
  }
  return Type;
}

bool PPCELFObjectWriter::needsRelocateWithSymbol(const MCSymbol &Sym,
                                                 unsigned Type) const {
  switch (Type) {
    default:
      return false;

    case ELF::R_PPC_REL24:
      // If the target symbol has a local entry point, we must keep the
      // target symbol to preserve that information for the linker.
      // The "other" values are stored in the last 6 bits of the second byte.
      // The traditional defines for STO values assume the full byte and thus
      // the shift to pack it.
      unsigned Other = cast<MCSymbolELF>(Sym).getOther() << 2;
      return (Other & ELF::STO_PPC64_LOCAL_MASK) != 0;
  }
}

MCObjectWriter *llvm_ks::createPPCELFObjectWriter(raw_pwrite_stream &OS,
                                               bool Is64Bit,
                                               bool IsLittleEndian,
                                               uint8_t OSABI) {
  MCELFObjectTargetWriter *MOTW = new PPCELFObjectWriter(Is64Bit, OSABI);
  return createELFObjectWriter(MOTW, OS, IsLittleEndian);
}

Coverage Report

Created: 2025-11-11 06:44

Line	Count	Source
1		//===-- PPCELFObjectWriter.cpp - PPC ELF Writer ---------------------------===//
2		//
3		// The LLVM Compiler Infrastructure
4		//
5		// This file is distributed under the University of Illinois Open Source
6		// License. See LICENSE.TXT for details.
7		//
8		//===----------------------------------------------------------------------===//
9
10		#include "MCTargetDesc/PPCMCTargetDesc.h"
11		#include "MCTargetDesc/PPCFixupKinds.h"
12		#include "MCTargetDesc/PPCMCExpr.h"
13		#include "llvm/ADT/STLExtras.h"
14		#include "llvm/MC/MCELFObjectWriter.h"
15		#include "llvm/MC/MCExpr.h"
16		#include "llvm/MC/MCSymbolELF.h"
17		#include "llvm/MC/MCValue.h"
18		#include "llvm/Support/ErrorHandling.h"
19
20		using namespace llvm_ks;
21
22		namespace {
23		class PPCELFObjectWriter : public MCELFObjectTargetWriter {
24		public:
25		PPCELFObjectWriter(bool Is64Bit, uint8_t OSABI);
26
27		protected:
28		unsigned getRelocType(MCContext &Ctx, const MCValue &Target,
29		const MCFixup &Fixup, bool IsPCRel) const override;
30
31		bool needsRelocateWithSymbol(const MCSymbol &Sym,
32		unsigned Type) const override;
33		};
34		}
35
36		PPCELFObjectWriter::PPCELFObjectWriter(bool Is64Bit, uint8_t OSABI)
37	5.58k	: MCELFObjectTargetWriter(Is64Bit, OSABI,
38	5.58k	Is64Bit ? ELF::EM_PPC64 : ELF::EM_PPC,
39	5.58k	/HasRelocationAddend/ true) {}
40
41		static MCSymbolRefExpr::VariantKind getAccessVariant(const MCValue &Target,
42	14.6k	const MCFixup &Fixup) {
43	14.6k	const MCExpr *Expr = Fixup.getValue();
44
45	14.6k	if (Expr->getKind() != MCExpr::Target)
46	14.6k	return Target.getAccessVariant();
47
48	47	switch (cast<PPCMCExpr>(Expr)->getKind()) {
49	0	case PPCMCExpr::VK_PPC_None:
50	0	return MCSymbolRefExpr::VK_None;
51	46	case PPCMCExpr::VK_PPC_LO:
52	46	return MCSymbolRefExpr::VK_PPC_LO;
53	1	case PPCMCExpr::VK_PPC_HI:
54	1	return MCSymbolRefExpr::VK_PPC_HI;
55	0	case PPCMCExpr::VK_PPC_HA:
56	0	return MCSymbolRefExpr::VK_PPC_HA;
57	0	case PPCMCExpr::VK_PPC_HIGHERA:
58	0	return MCSymbolRefExpr::VK_PPC_HIGHERA;
59	0	case PPCMCExpr::VK_PPC_HIGHER:
60	0	return MCSymbolRefExpr::VK_PPC_HIGHER;
61	0	case PPCMCExpr::VK_PPC_HIGHEST:
62	0	return MCSymbolRefExpr::VK_PPC_HIGHEST;
63	0	case PPCMCExpr::VK_PPC_HIGHESTA:
64	0	return MCSymbolRefExpr::VK_PPC_HIGHESTA;
65	47	}
66	47	llvm_unreachable("unknown PPCMCExpr kind");
67	47	}
68
69		unsigned PPCELFObjectWriter::getRelocType(MCContext &Ctx, const MCValue &Target,
70		const MCFixup &Fixup,
71	14.6k	bool IsPCRel) const {
72	14.6k	MCSymbolRefExpr::VariantKind Modifier = getAccessVariant(Target, Fixup);
73
74		// determine the type of the relocation
75	14.6k	unsigned Type;
76	14.6k	if (IsPCRel) {
77	1.13k	switch ((unsigned)Fixup.getKind()) {
78	0	default:
79	0	llvm_unreachable("Unimplemented");
80	176	case PPC::fixup_ppc_br24:
81	177	case PPC::fixup_ppc_br24abs:
82	177	switch (Modifier) {
83	0	default: llvm_unreachable("Unsupported Modifier");
84	177	case MCSymbolRefExpr::VK_None:
85	177	Type = ELF::R_PPC_REL24;
86	177	break;
87	0	case MCSymbolRefExpr::VK_PLT:
88	0	Type = ELF::R_PPC_PLTREL24;
89	0	break;
90	0	case MCSymbolRefExpr::VK_PPC_LOCAL:
91	0	Type = ELF::R_PPC_LOCAL24PC;
92	0	break;
93	177	}
94	177	break;
95	257	case PPC::fixup_ppc_brcond14:
96	257	case PPC::fixup_ppc_brcond14abs:
97	257	Type = ELF::R_PPC_REL14;
98	257	break;
99	0	case PPC::fixup_ppc_half16:
100	0	switch (Modifier) {
101	0	default: llvm_unreachable("Unsupported Modifier");
102	0	case MCSymbolRefExpr::VK_None:
103	0	Type = ELF::R_PPC_REL16;
104	0	break;
105	0	case MCSymbolRefExpr::VK_PPC_LO:
106	0	Type = ELF::R_PPC_REL16_LO;
107	0	break;
108	0	case MCSymbolRefExpr::VK_PPC_HI:
109	0	Type = ELF::R_PPC_REL16_HI;
110	0	break;
111	0	case MCSymbolRefExpr::VK_PPC_HA:
112	0	Type = ELF::R_PPC_REL16_HA;
113	0	break;
114	0	}
115	0	break;
116	0	case PPC::fixup_ppc_half16ds:
117	0	Target.print(errs());
118	0	errs() << '\n';
119	0	report_fatal_error("Invalid PC-relative half16ds relocation");
120	605	case FK_Data_4:
121	605	case FK_PCRel_4:
122	605	Type = ELF::R_PPC_REL32;
123	605	break;
124	97	case FK_Data_8:
125	97	case FK_PCRel_8:
126	97	Type = ELF::R_PPC64_REL64;
127	97	break;
128	1.13k	}
129	13.5k	} else {
130	13.5k	switch ((unsigned)Fixup.getKind()) {
131	0	default: llvm_unreachable("invalid fixup kind!");
132	6	case PPC::fixup_ppc_br24abs:
133	6	Type = ELF::R_PPC_ADDR24;
134	6	break;
135	62	case PPC::fixup_ppc_brcond14abs:
136	62	Type = ELF::R_PPC_ADDR14; // XXX: or BRNTAKEN?_
137	62	break;
138	295	case PPC::fixup_ppc_half16:
139	295	switch (Modifier) {
140	0	default: llvm_unreachable("Unsupported Modifier");
141	240	case MCSymbolRefExpr::VK_None:
142	240	Type = ELF::R_PPC_ADDR16;
143	240	break;
144	46	case MCSymbolRefExpr::VK_PPC_LO:
145	46	Type = ELF::R_PPC_ADDR16_LO;
146	46	break;
147	1	case MCSymbolRefExpr::VK_PPC_HI:
148	1	Type = ELF::R_PPC_ADDR16_HI;
149	1	break;
150	0	case MCSymbolRefExpr::VK_PPC_HA:
151	0	Type = ELF::R_PPC_ADDR16_HA;
152	0	break;
153	0	case MCSymbolRefExpr::VK_PPC_HIGHER:
154	0	Type = ELF::R_PPC64_ADDR16_HIGHER;
155	0	break;
156	0	case MCSymbolRefExpr::VK_PPC_HIGHERA:
157	0	Type = ELF::R_PPC64_ADDR16_HIGHERA;
158	0	break;
159	0	case MCSymbolRefExpr::VK_PPC_HIGHEST:
160	0	Type = ELF::R_PPC64_ADDR16_HIGHEST;
161	0	break;
162	0	case MCSymbolRefExpr::VK_PPC_HIGHESTA:
163	0	Type = ELF::R_PPC64_ADDR16_HIGHESTA;
164	0	break;
165	0	case MCSymbolRefExpr::VK_GOT:
166	0	Type = ELF::R_PPC_GOT16;
167	0	break;
168	0	case MCSymbolRefExpr::VK_PPC_GOT_LO:
169	0	Type = ELF::R_PPC_GOT16_LO;
170	0	break;
171	0	case MCSymbolRefExpr::VK_PPC_GOT_HI:
172	0	Type = ELF::R_PPC_GOT16_HI;
173	0	break;
174	0	case MCSymbolRefExpr::VK_PPC_GOT_HA:
175	0	Type = ELF::R_PPC_GOT16_HA;
176	0	break;
177	0	case MCSymbolRefExpr::VK_PPC_TOC:
178	0	Type = ELF::R_PPC64_TOC16;
179	0	break;
180	0	case MCSymbolRefExpr::VK_PPC_TOC_LO:
181	0	Type = ELF::R_PPC64_TOC16_LO;
182	0	break;
183	0	case MCSymbolRefExpr::VK_PPC_TOC_HI:
184	0	Type = ELF::R_PPC64_TOC16_HI;
185	0	break;
186	0	case MCSymbolRefExpr::VK_PPC_TOC_HA:
187	0	Type = ELF::R_PPC64_TOC16_HA;
188	0	break;
189	0	case MCSymbolRefExpr::VK_PPC_TPREL:
190	0	Type = ELF::R_PPC_TPREL16;
191	0	break;
192	0	case MCSymbolRefExpr::VK_PPC_TPREL_LO:
193	0	Type = ELF::R_PPC_TPREL16_LO;
194	0	break;
195	0	case MCSymbolRefExpr::VK_PPC_TPREL_HI:
196	0	Type = ELF::R_PPC_TPREL16_HI;
197	0	break;
198	0	case MCSymbolRefExpr::VK_PPC_TPREL_HA:
199	0	Type = ELF::R_PPC_TPREL16_HA;
200	0	break;
201	0	case MCSymbolRefExpr::VK_PPC_TPREL_HIGHER:
202	0	Type = ELF::R_PPC64_TPREL16_HIGHER;
203	0	break;
204	0	case MCSymbolRefExpr::VK_PPC_TPREL_HIGHERA:
205	0	Type = ELF::R_PPC64_TPREL16_HIGHERA;
206	0	break;
207	0	case MCSymbolRefExpr::VK_PPC_TPREL_HIGHEST:
208	0	Type = ELF::R_PPC64_TPREL16_HIGHEST;
209	0	break;
210	0	case MCSymbolRefExpr::VK_PPC_TPREL_HIGHESTA:
211	0	Type = ELF::R_PPC64_TPREL16_HIGHESTA;
212	0	break;
213	8	case MCSymbolRefExpr::VK_PPC_DTPREL:
214	8	Type = ELF::R_PPC64_DTPREL16;
215	8	break;
216	0	case MCSymbolRefExpr::VK_PPC_DTPREL_LO:
217	0	Type = ELF::R_PPC64_DTPREL16_LO;
218	0	break;
219	0	case MCSymbolRefExpr::VK_PPC_DTPREL_HI:
220	0	Type = ELF::R_PPC64_DTPREL16_HI;
221	0	break;
222	0	case MCSymbolRefExpr::VK_PPC_DTPREL_HA:
223	0	Type = ELF::R_PPC64_DTPREL16_HA;
224	0	break;
225	0	case MCSymbolRefExpr::VK_PPC_DTPREL_HIGHER:
226	0	Type = ELF::R_PPC64_DTPREL16_HIGHER;
227	0	break;
228	0	case MCSymbolRefExpr::VK_PPC_DTPREL_HIGHERA:
229	0	Type = ELF::R_PPC64_DTPREL16_HIGHERA;
230	0	break;
231	0	case MCSymbolRefExpr::VK_PPC_DTPREL_HIGHEST:
232	0	Type = ELF::R_PPC64_DTPREL16_HIGHEST;
233	0	break;
234	0	case MCSymbolRefExpr::VK_PPC_DTPREL_HIGHESTA:
235	0	Type = ELF::R_PPC64_DTPREL16_HIGHESTA;
236	0	break;
237	0	case MCSymbolRefExpr::VK_PPC_GOT_TLSGD:
238	0	if (is64Bit())
239	0	Type = ELF::R_PPC64_GOT_TLSGD16;
240	0	else
241	0	Type = ELF::R_PPC_GOT_TLSGD16;
242	0	break;
243	0	case MCSymbolRefExpr::VK_PPC_GOT_TLSGD_LO:
244	0	Type = ELF::R_PPC64_GOT_TLSGD16_LO;
245	0	break;
246	0	case MCSymbolRefExpr::VK_PPC_GOT_TLSGD_HI:
247	0	Type = ELF::R_PPC64_GOT_TLSGD16_HI;
248	0	break;
249	0	case MCSymbolRefExpr::VK_PPC_GOT_TLSGD_HA:
250	0	Type = ELF::R_PPC64_GOT_TLSGD16_HA;
251	0	break;
252	0	case MCSymbolRefExpr::VK_PPC_GOT_TLSLD:
253	0	if (is64Bit())
254	0	Type = ELF::R_PPC64_GOT_TLSLD16;
255	0	else
256	0	Type = ELF::R_PPC_GOT_TLSLD16;
257	0	break;
258	0	case MCSymbolRefExpr::VK_PPC_GOT_TLSLD_LO:
259	0	Type = ELF::R_PPC64_GOT_TLSLD16_LO;
260	0	break;
261	0	case MCSymbolRefExpr::VK_PPC_GOT_TLSLD_HI:
262	0	Type = ELF::R_PPC64_GOT_TLSLD16_HI;
263	0	break;
264	0	case MCSymbolRefExpr::VK_PPC_GOT_TLSLD_HA:
265	0	Type = ELF::R_PPC64_GOT_TLSLD16_HA;
266	0	break;
267	0	case MCSymbolRefExpr::VK_PPC_GOT_TPREL:
268		/* We don't have R_PPC64_GOT_TPREL16, but since GOT offsets
269		are always 4-aligned, we can use R_PPC64_GOT_TPREL16_DS. */
270	0	Type = ELF::R_PPC64_GOT_TPREL16_DS;
271	0	break;
272	0	case MCSymbolRefExpr::VK_PPC_GOT_TPREL_LO:
273		/* We don't have R_PPC64_GOT_TPREL16_LO, but since GOT offsets
274		are always 4-aligned, we can use R_PPC64_GOT_TPREL16_LO_DS. */
275	0	Type = ELF::R_PPC64_GOT_TPREL16_LO_DS;
276	0	break;
277	0	case MCSymbolRefExpr::VK_PPC_GOT_TPREL_HI:
278	0	Type = ELF::R_PPC64_GOT_TPREL16_HI;
279	0	break;
280	0	case MCSymbolRefExpr::VK_PPC_GOT_DTPREL:
281		/* We don't have R_PPC64_GOT_DTPREL16, but since GOT offsets
282		are always 4-aligned, we can use R_PPC64_GOT_DTPREL16_DS. */
283	0	Type = ELF::R_PPC64_GOT_DTPREL16_DS;
284	0	break;
285	0	case MCSymbolRefExpr::VK_PPC_GOT_DTPREL_LO:
286		/* We don't have R_PPC64_GOT_DTPREL16_LO, but since GOT offsets
287		are always 4-aligned, we can use R_PPC64_GOT_DTPREL16_LO_DS. */
288	0	Type = ELF::R_PPC64_GOT_DTPREL16_LO_DS;
289	0	break;
290	0	case MCSymbolRefExpr::VK_PPC_GOT_TPREL_HA:
291	0	Type = ELF::R_PPC64_GOT_TPREL16_HA;
292	0	break;
293	0	case MCSymbolRefExpr::VK_PPC_GOT_DTPREL_HI:
294	0	Type = ELF::R_PPC64_GOT_DTPREL16_HI;
295	0	break;
296	0	case MCSymbolRefExpr::VK_PPC_GOT_DTPREL_HA:
297	0	Type = ELF::R_PPC64_GOT_DTPREL16_HA;
298	0	break;
299	295	}
300	295	break;
301	295	case PPC::fixup_ppc_half16ds:
302	64	switch (Modifier) {
303	0	default: llvm_unreachable("Unsupported Modifier");
304	64	case MCSymbolRefExpr::VK_None:
305	64	Type = ELF::R_PPC64_ADDR16_DS;
306	64	break;
307	0	case MCSymbolRefExpr::VK_PPC_LO:
308	0	Type = ELF::R_PPC64_ADDR16_LO_DS;
309	0	break;
310	0	case MCSymbolRefExpr::VK_GOT:
311	0	Type = ELF::R_PPC64_GOT16_DS;
312	0	break;
313	0	case MCSymbolRefExpr::VK_PPC_GOT_LO:
314	0	Type = ELF::R_PPC64_GOT16_LO_DS;
315	0	break;
316	0	case MCSymbolRefExpr::VK_PPC_TOC:
317	0	Type = ELF::R_PPC64_TOC16_DS;
318	0	break;
319	0	case MCSymbolRefExpr::VK_PPC_TOC_LO:
320	0	Type = ELF::R_PPC64_TOC16_LO_DS;
321	0	break;
322	0	case MCSymbolRefExpr::VK_PPC_TPREL:
323	0	Type = ELF::R_PPC64_TPREL16_DS;
324	0	break;
325	0	case MCSymbolRefExpr::VK_PPC_TPREL_LO:
326	0	Type = ELF::R_PPC64_TPREL16_LO_DS;
327	0	break;
328	0	case MCSymbolRefExpr::VK_PPC_DTPREL:
329	0	Type = ELF::R_PPC64_DTPREL16_DS;
330	0	break;
331	0	case MCSymbolRefExpr::VK_PPC_DTPREL_LO:
332	0	Type = ELF::R_PPC64_DTPREL16_LO_DS;
333	0	break;
334	0	case MCSymbolRefExpr::VK_PPC_GOT_TPREL:
335	0	Type = ELF::R_PPC64_GOT_TPREL16_DS;
336	0	break;
337	0	case MCSymbolRefExpr::VK_PPC_GOT_TPREL_LO:
338	0	Type = ELF::R_PPC64_GOT_TPREL16_LO_DS;
339	0	break;
340	0	case MCSymbolRefExpr::VK_PPC_GOT_DTPREL:
341	0	Type = ELF::R_PPC64_GOT_DTPREL16_DS;
342	0	break;
343	0	case MCSymbolRefExpr::VK_PPC_GOT_DTPREL_LO:
344	0	Type = ELF::R_PPC64_GOT_DTPREL16_LO_DS;
345	0	break;
346	64	}
347	64	break;
348	64	case PPC::fixup_ppc_nofixup:
349	0	switch (Modifier) {
350	0	default: llvm_unreachable("Unsupported Modifier");
351	0	case MCSymbolRefExpr::VK_PPC_TLSGD:
352	0	if (is64Bit())
353	0	Type = ELF::R_PPC64_TLSGD;
354	0	else
355	0	Type = ELF::R_PPC_TLSGD;
356	0	break;
357	0	case MCSymbolRefExpr::VK_PPC_TLSLD:
358	0	if (is64Bit())
359	0	Type = ELF::R_PPC64_TLSLD;
360	0	else
361	0	Type = ELF::R_PPC_TLSLD;
362	0	break;
363	0	case MCSymbolRefExpr::VK_PPC_TLS:
364	0	if (is64Bit())
365	0	Type = ELF::R_PPC64_TLS;
366	0	else
367	0	Type = ELF::R_PPC_TLS;
368	0	break;
369	0	}
370	0	break;
371	269	case FK_Data_8:
372	269	switch (Modifier) {
373	0	default: llvm_unreachable("Unsupported Modifier");
374	0	case MCSymbolRefExpr::VK_PPC_TOCBASE:
375	0	Type = ELF::R_PPC64_TOC;
376	0	break;
377	269	case MCSymbolRefExpr::VK_None:
378	269	Type = ELF::R_PPC64_ADDR64;
379	269	break;
380	0	case MCSymbolRefExpr::VK_PPC_DTPMOD:
381	0	Type = ELF::R_PPC64_DTPMOD64;
382	0	break;
383	0	case MCSymbolRefExpr::VK_PPC_TPREL:
384	0	Type = ELF::R_PPC64_TPREL64;
385	0	break;
386	0	case MCSymbolRefExpr::VK_PPC_DTPREL:
387	0	Type = ELF::R_PPC64_DTPREL64;
388	0	break;
389	269	}
390	269	break;
391	724	case FK_Data_4:
392	724	Type = ELF::R_PPC_ADDR32;
393	724	break;
394	12.1k	case FK_Data_2:
395	12.1k	Type = ELF::R_PPC_ADDR16;
396	12.1k	break;
397	13.5k	}
398	13.5k	}
399	14.6k	return Type;
400	14.6k	}
401
402		bool PPCELFObjectWriter::needsRelocateWithSymbol(const MCSymbol &Sym,
403	13.5k	unsigned Type) const {
404	13.5k	switch (Type) {
405	13.5k	default:
406	13.5k	return false;
407
408	0	case ELF::R_PPC_REL24:
409		// If the target symbol has a local entry point, we must keep the
410		// target symbol to preserve that information for the linker.
411		// The "other" values are stored in the last 6 bits of the second byte.
412		// The traditional defines for STO values assume the full byte and thus
413		// the shift to pack it.
414	0	unsigned Other = cast<MCSymbolELF>(Sym).getOther() << 2;
415	0	return (Other & ELF::STO_PPC64_LOCAL_MASK) != 0;
416	13.5k	}
417	13.5k	}
418
419		MCObjectWriter *llvm_ks::createPPCELFObjectWriter(raw_pwrite_stream &OS,
420		bool Is64Bit,
421		bool IsLittleEndian,
422	5.58k	uint8_t OSABI) {
423	5.58k	MCELFObjectTargetWriter *MOTW = new PPCELFObjectWriter(Is64Bit, OSABI);
424	5.58k	return createELFObjectWriter(MOTW, OS, IsLittleEndian);
425	5.58k	}