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gerrit-public.fairphone.software / toolchain / llvm-project / cae3a17a21fb51de1cab1b729be3bc84101824b8 / . / llvm / lib / Target / PowerPC / MCTargetDesc / PPCELFObjectWriter.cpp
blob: 0df4b97de674ca36c5f01e84bb63c86d8c6a0186 [file] [log] [blame]
Rafael Espindola38a400d2011-12-22 01:57:09 +0000[diff] [blame]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
Rafael Espindola38a400d2011-12-22 01:57:09 +0000[diff] [blame]10#include "MCTargetDesc/PPCMCTargetDesc.h"
Chandler Carruthed0881b2012-12-03 16:50:05 +0000[diff] [blame]11#include "MCTargetDesc/PPCFixupKinds.h"
Rafael Espindola7fadc0e2014-03-20 02:12:01 +0000[diff] [blame]12#include "MCTargetDesc/PPCMCExpr.h"
Bill Schmidta4f89842012-12-14 20:28:38 +0000[diff] [blame]13#include "llvm/ADT/STLExtras.h"
Rafael Espindola38a400d2011-12-22 01:57:09 +0000[diff] [blame]14#include "llvm/MC/MCELFObjectWriter.h"
Adhemerval Zanellaf2aceda2012-10-25 12:27:42 +0000[diff] [blame]15#include "llvm/MC/MCExpr.h"
16#include "llvm/MC/MCValue.h"
Chandler Carruthed0881b2012-12-03 16:50:05 +0000[diff] [blame]17#include "llvm/Support/ErrorHandling.h"
Rafael Espindola38a400d2011-12-22 01:57:09 +0000[diff] [blame]18
19using namespace llvm;
20
21namespace {
22 class PPCELFObjectWriter : public MCELFObjectTargetWriter {
23 public:
24 PPCELFObjectWriter(bool Is64Bit, uint8_t OSABI);
25
26 virtual ~PPCELFObjectWriter();
27 protected:
Adhemerval Zanellaf2aceda2012-10-25 12:27:42 +0000[diff] [blame]28 virtual unsigned getRelocTypeInner(const MCValue &Target,
29 const MCFixup &Fixup,
30 bool IsPCRel) const;
Rafael Espindola38a400d2011-12-22 01:57:09 +0000[diff] [blame]31 virtual unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
32 bool IsPCRel, bool IsRelocWithSymbol,
33 int64_t Addend) const;
Ulrich Weigand3a758612013-07-01 18:19:56 +0000[diff] [blame]34 virtual const MCSymbol *ExplicitRelSym(const MCAssembler &Asm,
35 const MCValue &Target,
36 const MCFragment &F,
37 const MCFixup &Fixup,
38 bool IsPCRel) const;
Adhemerval Zanellaf2aceda2012-10-25 12:27:42 +0000[diff] [blame]39 virtual const MCSymbol *undefinedExplicitRelSym(const MCValue &Target,
40 const MCFixup &Fixup,
41 bool IsPCRel) const;
Rafael Espindola38a400d2011-12-22 01:57:09 +0000[diff] [blame]42 };
43}
44
45PPCELFObjectWriter::PPCELFObjectWriter(bool Is64Bit, uint8_t OSABI)
46 : MCELFObjectTargetWriter(Is64Bit, OSABI,
47 Is64Bit ? ELF::EM_PPC64 : ELF::EM_PPC,
Rafael Espindola25009622011-12-22 18:38:06 +0000[diff] [blame]48 /*HasRelocationAddend*/ true) {}
Rafael Espindola38a400d2011-12-22 01:57:09 +0000[diff] [blame]49
50PPCELFObjectWriter::~PPCELFObjectWriter() {
51}
52
Rafael Espindola7fadc0e2014-03-20 02:12:01 +0000[diff] [blame]53static MCSymbolRefExpr::VariantKind getAccessVariant(const MCFixup &Fixup) {
54 const MCExpr *Expr = Fixup.getValue();
55
56 if (Expr->getKind() != MCExpr::Target)
57 return Fixup.getAccessVariant();
58
59 switch (cast<PPCMCExpr>(Expr)->getKind()) {
60 case PPCMCExpr::VK_PPC_None:
61 return MCSymbolRefExpr::VK_None;
62 case PPCMCExpr::VK_PPC_LO:
63 return MCSymbolRefExpr::VK_PPC_LO;
64 case PPCMCExpr::VK_PPC_HI:
65 return MCSymbolRefExpr::VK_PPC_HI;
66 case PPCMCExpr::VK_PPC_HA:
67 return MCSymbolRefExpr::VK_PPC_HA;
68 case PPCMCExpr::VK_PPC_HIGHERA:
69 return MCSymbolRefExpr::VK_PPC_HIGHERA;
70 case PPCMCExpr::VK_PPC_HIGHER:
71 return MCSymbolRefExpr::VK_PPC_HIGHER;
72 case PPCMCExpr::VK_PPC_HIGHEST:
73 return MCSymbolRefExpr::VK_PPC_HIGHEST;
74 case PPCMCExpr::VK_PPC_HIGHESTA:
75 return MCSymbolRefExpr::VK_PPC_HIGHESTA;
76 }
Alexey Samsonov94bc4222014-03-20 07:30:40 +0000[diff] [blame]77 llvm_unreachable("unknown PPCMCExpr kind");
Rafael Espindola7fadc0e2014-03-20 02:12:01 +0000[diff] [blame]78}
79
Adhemerval Zanellaf2aceda2012-10-25 12:27:42 +0000[diff] [blame]80unsigned PPCELFObjectWriter::getRelocTypeInner(const MCValue &Target,
81 const MCFixup &Fixup,
82 bool IsPCRel) const
83{
Rafael Espindola7fadc0e2014-03-20 02:12:01 +0000[diff] [blame]84 MCSymbolRefExpr::VariantKind Modifier = getAccessVariant(Fixup);
Adhemerval Zanellaf2aceda2012-10-25 12:27:42 +0000[diff] [blame]85
Rafael Espindola38a400d2011-12-22 01:57:09 +0000[diff] [blame]86 // determine the type of the relocation
87 unsigned Type;
88 if (IsPCRel) {
89 switch ((unsigned)Fixup.getKind()) {
90 default:
91 llvm_unreachable("Unimplemented");
92 case PPC::fixup_ppc_br24:
Ulrich Weigandb6a30d12013-06-24 11:03:33 +0000[diff] [blame]93 case PPC::fixup_ppc_br24abs:
Rafael Espindola38a400d2011-12-22 01:57:09 +0000[diff] [blame]94 Type = ELF::R_PPC_REL24;
95 break;
Ulrich Weigand72a7dc02013-04-26 15:38:30 +0000[diff] [blame]96 case PPC::fixup_ppc_brcond14:
Ulrich Weigandb6a30d12013-06-24 11:03:33 +0000[diff] [blame]97 case PPC::fixup_ppc_brcond14abs:
Ulrich Weigand72a7dc02013-04-26 15:38:30 +0000[diff] [blame]98 Type = ELF::R_PPC_REL14;
99 break;
Ulrich Weigand91add7d2013-06-21 14:44:37 +0000[diff] [blame]100 case PPC::fixup_ppc_half16:
101 switch (Modifier) {
102 default: llvm_unreachable("Unsupported Modifier");
103 case MCSymbolRefExpr::VK_None:
104 Type = ELF::R_PPC_REL16;
105 break;
106 case MCSymbolRefExpr::VK_PPC_LO:
107 Type = ELF::R_PPC_REL16_LO;
108 break;
109 case MCSymbolRefExpr::VK_PPC_HI:
110 Type = ELF::R_PPC_REL16_HI;
111 break;
112 case MCSymbolRefExpr::VK_PPC_HA:
113 Type = ELF::R_PPC_REL16_HA;
114 break;
115 }
116 break;
Adhemerval Zanella9b0b7812013-01-04 19:08:13 +0000[diff] [blame]117 case FK_Data_4:
Rafael Espindola38a400d2011-12-22 01:57:09 +0000[diff] [blame]118 case FK_PCRel_4:
119 Type = ELF::R_PPC_REL32;
120 break;
Adhemerval Zanella9b0b7812013-01-04 19:08:13 +0000[diff] [blame]121 case FK_Data_8:
122 case FK_PCRel_8:
123 Type = ELF::R_PPC64_REL64;
124 break;
Rafael Espindola38a400d2011-12-22 01:57:09 +0000[diff] [blame]125 }
126 } else {
127 switch ((unsigned)Fixup.getKind()) {
128 default: llvm_unreachable("invalid fixup kind!");
Ulrich Weigandb6a30d12013-06-24 11:03:33 +0000[diff] [blame]129 case PPC::fixup_ppc_br24abs:
Rafael Espindola38a400d2011-12-22 01:57:09 +0000[diff] [blame]130 Type = ELF::R_PPC_ADDR24;
131 break;
Ulrich Weigandb6a30d12013-06-24 11:03:33 +0000[diff] [blame]132 case PPC::fixup_ppc_brcond14abs:
Adhemerval Zanellaf2aceda2012-10-25 12:27:42 +0000[diff] [blame]133 Type = ELF::R_PPC_ADDR14; // XXX: or BRNTAKEN?_
Rafael Espindola38a400d2011-12-22 01:57:09 +0000[diff] [blame]134 break;
Ulrich Weigand6e23ac62013-05-17 12:37:21 +0000[diff] [blame]135 case PPC::fixup_ppc_half16:
Ulrich Weigand85578502012-11-13 19:24:36 +0000[diff] [blame]136 switch (Modifier) {
137 default: llvm_unreachable("Unsupported Modifier");
Ulrich Weigand85578502012-11-13 19:24:36 +0000[diff] [blame]138 case MCSymbolRefExpr::VK_None:
Ulrich Weigande4620532013-05-08 17:50:07 +0000[diff] [blame]139 Type = ELF::R_PPC_ADDR16;
140 break;
Ulrich Weigandd51c09f2013-06-21 14:42:20 +0000[diff] [blame]141 case MCSymbolRefExpr::VK_PPC_LO:
Ulrich Weigand85578502012-11-13 19:24:36 +0000[diff] [blame]142 Type = ELF::R_PPC_ADDR16_LO;
Ulrich Weigand9e90b3c2013-06-20 22:04:40 +0000[diff] [blame]143 break;
Ulrich Weigande67c5652013-06-21 14:42:49 +0000[diff] [blame]144 case MCSymbolRefExpr::VK_PPC_HI:
145 Type = ELF::R_PPC_ADDR16_HI;
146 break;
Ulrich Weigandd51c09f2013-06-21 14:42:20 +0000[diff] [blame]147 case MCSymbolRefExpr::VK_PPC_HA:
Ulrich Weigand9e90b3c2013-06-20 22:04:40 +0000[diff] [blame]148 Type = ELF::R_PPC_ADDR16_HA;
149 break;
Ulrich Weigande9126f52013-06-21 14:43:42 +0000[diff] [blame]150 case MCSymbolRefExpr::VK_PPC_HIGHER:
151 Type = ELF::R_PPC64_ADDR16_HIGHER;
152 break;
153 case MCSymbolRefExpr::VK_PPC_HIGHERA:
154 Type = ELF::R_PPC64_ADDR16_HIGHERA;
155 break;
156 case MCSymbolRefExpr::VK_PPC_HIGHEST:
157 Type = ELF::R_PPC64_ADDR16_HIGHEST;
158 break;
159 case MCSymbolRefExpr::VK_PPC_HIGHESTA:
160 Type = ELF::R_PPC64_ADDR16_HIGHESTA;
161 break;
Ulrich Weigand93372b42013-06-25 16:49:50 +0000[diff] [blame]162 case MCSymbolRefExpr::VK_GOT:
163 Type = ELF::R_PPC_GOT16;
164 break;
165 case MCSymbolRefExpr::VK_PPC_GOT_LO:
166 Type = ELF::R_PPC_GOT16_LO;
167 break;
168 case MCSymbolRefExpr::VK_PPC_GOT_HI:
169 Type = ELF::R_PPC_GOT16_HI;
170 break;
171 case MCSymbolRefExpr::VK_PPC_GOT_HA:
172 Type = ELF::R_PPC_GOT16_HA;
173 break;
Ulrich Weigandd51c09f2013-06-21 14:42:20 +0000[diff] [blame]174 case MCSymbolRefExpr::VK_PPC_TOC:
Ulrich Weigand3e186012013-03-26 10:56:47 +0000[diff] [blame]175 Type = ELF::R_PPC64_TOC16;
176 break;
Ulrich Weigandd51c09f2013-06-21 14:42:20 +0000[diff] [blame]177 case MCSymbolRefExpr::VK_PPC_TOC_LO:
Bill Schmidt34627e32012-11-27 17:35:46 +0000[diff] [blame]178 Type = ELF::R_PPC64_TOC16_LO;
179 break;
Ulrich Weigand72ddbd62013-06-21 14:43:10 +0000[diff] [blame]180 case MCSymbolRefExpr::VK_PPC_TOC_HI:
181 Type = ELF::R_PPC64_TOC16_HI;
182 break;
Ulrich Weigandd51c09f2013-06-21 14:42:20 +0000[diff] [blame]183 case MCSymbolRefExpr::VK_PPC_TOC_HA:
Ulrich Weigand9e90b3c2013-06-20 22:04:40 +0000[diff] [blame]184 Type = ELF::R_PPC64_TOC16_HA;
185 break;
Ulrich Weigand876a0d02013-06-21 14:44:15 +0000[diff] [blame]186 case MCSymbolRefExpr::VK_PPC_TPREL:
187 Type = ELF::R_PPC_TPREL16;
188 break;
Ulrich Weigandd51c09f2013-06-21 14:42:20 +0000[diff] [blame]189 case MCSymbolRefExpr::VK_PPC_TPREL_LO:
Ulrich Weigand9e90b3c2013-06-20 22:04:40 +0000[diff] [blame]190 Type = ELF::R_PPC_TPREL16_LO;
191 break;
Ulrich Weigand876a0d02013-06-21 14:44:15 +0000[diff] [blame]192 case MCSymbolRefExpr::VK_PPC_TPREL_HI:
193 Type = ELF::R_PPC_TPREL16_HI;
194 break;
Ulrich Weigandd51c09f2013-06-21 14:42:20 +0000[diff] [blame]195 case MCSymbolRefExpr::VK_PPC_TPREL_HA:
Ulrich Weigand9e90b3c2013-06-20 22:04:40 +0000[diff] [blame]196 Type = ELF::R_PPC_TPREL16_HA;
197 break;
Ulrich Weigand876a0d02013-06-21 14:44:15 +0000[diff] [blame]198 case MCSymbolRefExpr::VK_PPC_TPREL_HIGHER:
199 Type = ELF::R_PPC64_TPREL16_HIGHER;
200 break;
201 case MCSymbolRefExpr::VK_PPC_TPREL_HIGHERA:
202 Type = ELF::R_PPC64_TPREL16_HIGHERA;
203 break;
204 case MCSymbolRefExpr::VK_PPC_TPREL_HIGHEST:
205 Type = ELF::R_PPC64_TPREL16_HIGHEST;
206 break;
207 case MCSymbolRefExpr::VK_PPC_TPREL_HIGHESTA:
208 Type = ELF::R_PPC64_TPREL16_HIGHESTA;
209 break;
210 case MCSymbolRefExpr::VK_PPC_DTPREL:
211 Type = ELF::R_PPC64_DTPREL16;
212 break;
Ulrich Weigandd51c09f2013-06-21 14:42:20 +0000[diff] [blame]213 case MCSymbolRefExpr::VK_PPC_DTPREL_LO:
Ulrich Weigand9e90b3c2013-06-20 22:04:40 +0000[diff] [blame]214 Type = ELF::R_PPC64_DTPREL16_LO;
215 break;
Ulrich Weigand876a0d02013-06-21 14:44:15 +0000[diff] [blame]216 case MCSymbolRefExpr::VK_PPC_DTPREL_HI:
217 Type = ELF::R_PPC64_DTPREL16_HI;
218 break;
Ulrich Weigandd51c09f2013-06-21 14:42:20 +0000[diff] [blame]219 case MCSymbolRefExpr::VK_PPC_DTPREL_HA:
Ulrich Weigand9e90b3c2013-06-20 22:04:40 +0000[diff] [blame]220 Type = ELF::R_PPC64_DTPREL16_HA;
221 break;
Ulrich Weigand876a0d02013-06-21 14:44:15 +0000[diff] [blame]222 case MCSymbolRefExpr::VK_PPC_DTPREL_HIGHER:
223 Type = ELF::R_PPC64_DTPREL16_HIGHER;
224 break;
225 case MCSymbolRefExpr::VK_PPC_DTPREL_HIGHERA:
226 Type = ELF::R_PPC64_DTPREL16_HIGHERA;
227 break;
228 case MCSymbolRefExpr::VK_PPC_DTPREL_HIGHEST:
229 Type = ELF::R_PPC64_DTPREL16_HIGHEST;
230 break;
231 case MCSymbolRefExpr::VK_PPC_DTPREL_HIGHESTA:
232 Type = ELF::R_PPC64_DTPREL16_HIGHESTA;
233 break;
234 case MCSymbolRefExpr::VK_PPC_GOT_TLSGD:
235 Type = ELF::R_PPC64_GOT_TLSGD16;
236 break;
Ulrich Weigandd51c09f2013-06-21 14:42:20 +0000[diff] [blame]237 case MCSymbolRefExpr::VK_PPC_GOT_TLSGD_LO:
Bill Schmidtc56f1d32012-12-11 20:30:11 +0000[diff] [blame]238 Type = ELF::R_PPC64_GOT_TLSGD16_LO;
239 break;
Ulrich Weigand876a0d02013-06-21 14:44:15 +0000[diff] [blame]240 case MCSymbolRefExpr::VK_PPC_GOT_TLSGD_HI:
241 Type = ELF::R_PPC64_GOT_TLSGD16_HI;
242 break;
Ulrich Weigandd51c09f2013-06-21 14:42:20 +0000[diff] [blame]243 case MCSymbolRefExpr::VK_PPC_GOT_TLSGD_HA:
Ulrich Weigand9e90b3c2013-06-20 22:04:40 +0000[diff] [blame]244 Type = ELF::R_PPC64_GOT_TLSGD16_HA;
245 break;
Ulrich Weigand876a0d02013-06-21 14:44:15 +0000[diff] [blame]246 case MCSymbolRefExpr::VK_PPC_GOT_TLSLD:
247 Type = ELF::R_PPC64_GOT_TLSLD16;
248 break;
Ulrich Weigandd51c09f2013-06-21 14:42:20 +0000[diff] [blame]249 case MCSymbolRefExpr::VK_PPC_GOT_TLSLD_LO:
Bill Schmidt24b8dd62012-12-12 19:29:35 +0000[diff] [blame]250 Type = ELF::R_PPC64_GOT_TLSLD16_LO;
251 break;
Ulrich Weigand876a0d02013-06-21 14:44:15 +0000[diff] [blame]252 case MCSymbolRefExpr::VK_PPC_GOT_TLSLD_HI:
253 Type = ELF::R_PPC64_GOT_TLSLD16_HI;
254 break;
Ulrich Weigandd51c09f2013-06-21 14:42:20 +0000[diff] [blame]255 case MCSymbolRefExpr::VK_PPC_GOT_TLSLD_HA:
Ulrich Weigand9e90b3c2013-06-20 22:04:40 +0000[diff] [blame]256 Type = ELF::R_PPC64_GOT_TLSLD16_HA;
257 break;
Ulrich Weigandb2044312013-07-05 13:49:46 +0000[diff] [blame]258 case MCSymbolRefExpr::VK_PPC_GOT_TPREL:
259 /* We don't have R_PPC64_GOT_TPREL16, but since GOT offsets
260 are always 4-aligned, we can use R_PPC64_GOT_TPREL16_DS. */
261 Type = ELF::R_PPC64_GOT_TPREL16_DS;
262 break;
263 case MCSymbolRefExpr::VK_PPC_GOT_TPREL_LO:
264 /* We don't have R_PPC64_GOT_TPREL16_LO, but since GOT offsets
265 are always 4-aligned, we can use R_PPC64_GOT_TPREL16_LO_DS. */
266 Type = ELF::R_PPC64_GOT_TPREL16_LO_DS;
267 break;
Ulrich Weigand876a0d02013-06-21 14:44:15 +0000[diff] [blame]268 case MCSymbolRefExpr::VK_PPC_GOT_TPREL_HI:
269 Type = ELF::R_PPC64_GOT_TPREL16_HI;
270 break;
Ulrich Weigandb2044312013-07-05 13:49:46 +0000[diff] [blame]271 case MCSymbolRefExpr::VK_PPC_GOT_DTPREL:
272 /* We don't have R_PPC64_GOT_DTPREL16, but since GOT offsets
273 are always 4-aligned, we can use R_PPC64_GOT_DTPREL16_DS. */
274 Type = ELF::R_PPC64_GOT_DTPREL16_DS;
275 break;
276 case MCSymbolRefExpr::VK_PPC_GOT_DTPREL_LO:
277 /* We don't have R_PPC64_GOT_DTPREL16_LO, but since GOT offsets
278 are always 4-aligned, we can use R_PPC64_GOT_DTPREL16_LO_DS. */
279 Type = ELF::R_PPC64_GOT_DTPREL16_LO_DS;
280 break;
Ulrich Weigandd51c09f2013-06-21 14:42:20 +0000[diff] [blame]281 case MCSymbolRefExpr::VK_PPC_GOT_TPREL_HA:
Ulrich Weigand9e90b3c2013-06-20 22:04:40 +0000[diff] [blame]282 Type = ELF::R_PPC64_GOT_TPREL16_HA;
283 break;
Ulrich Weigand876a0d02013-06-21 14:44:15 +0000[diff] [blame]284 case MCSymbolRefExpr::VK_PPC_GOT_DTPREL_HI:
285 Type = ELF::R_PPC64_GOT_DTPREL16_HI;
286 break;
287 case MCSymbolRefExpr::VK_PPC_GOT_DTPREL_HA:
288 Type = ELF::R_PPC64_GOT_DTPREL16_HA;
289 break;
Ulrich Weigand85578502012-11-13 19:24:36 +0000[diff] [blame]290 }
Rafael Espindola38a400d2011-12-22 01:57:09 +0000[diff] [blame]291 break;
Ulrich Weigand6e23ac62013-05-17 12:37:21 +0000[diff] [blame]292 case PPC::fixup_ppc_half16ds:
Bill Schmidt3822ef22013-02-21 00:05:29 +0000[diff] [blame]293 switch (Modifier) {
294 default: llvm_unreachable("Unsupported Modifier");
Bill Schmidt3822ef22013-02-21 00:05:29 +0000[diff] [blame]295 case MCSymbolRefExpr::VK_None:
Ulrich Weigand3e186012013-03-26 10:56:47 +0000[diff] [blame]296 Type = ELF::R_PPC64_ADDR16_DS;
Bill Schmidt3822ef22013-02-21 00:05:29 +0000[diff] [blame]297 break;
Ulrich Weigandd51c09f2013-06-21 14:42:20 +0000[diff] [blame]298 case MCSymbolRefExpr::VK_PPC_LO:
Ulrich Weigande4620532013-05-08 17:50:07 +0000[diff] [blame]299 Type = ELF::R_PPC64_ADDR16_LO_DS;
300 break;
Ulrich Weigand93372b42013-06-25 16:49:50 +0000[diff] [blame]301 case MCSymbolRefExpr::VK_GOT:
302 Type = ELF::R_PPC64_GOT16_DS;
303 break;
304 case MCSymbolRefExpr::VK_PPC_GOT_LO:
305 Type = ELF::R_PPC64_GOT16_LO_DS;
306 break;
Ulrich Weigandd51c09f2013-06-21 14:42:20 +0000[diff] [blame]307 case MCSymbolRefExpr::VK_PPC_TOC:
Bill Schmidt34627e32012-11-27 17:35:46 +0000[diff] [blame]308 Type = ELF::R_PPC64_TOC16_DS;
309 break;
Ulrich Weigandd51c09f2013-06-21 14:42:20 +0000[diff] [blame]310 case MCSymbolRefExpr::VK_PPC_TOC_LO:
Bill Schmidt34627e32012-11-27 17:35:46 +0000[diff] [blame]311 Type = ELF::R_PPC64_TOC16_LO_DS;
312 break;
Ulrich Weigand876a0d02013-06-21 14:44:15 +0000[diff] [blame]313 case MCSymbolRefExpr::VK_PPC_TPREL:
314 Type = ELF::R_PPC64_TPREL16_DS;
315 break;
316 case MCSymbolRefExpr::VK_PPC_TPREL_LO:
317 Type = ELF::R_PPC64_TPREL16_LO_DS;
318 break;
319 case MCSymbolRefExpr::VK_PPC_DTPREL:
320 Type = ELF::R_PPC64_DTPREL16_DS;
321 break;
322 case MCSymbolRefExpr::VK_PPC_DTPREL_LO:
323 Type = ELF::R_PPC64_DTPREL16_LO_DS;
324 break;
325 case MCSymbolRefExpr::VK_PPC_GOT_TPREL:
326 Type = ELF::R_PPC64_GOT_TPREL16_DS;
327 break;
Ulrich Weigandd51c09f2013-06-21 14:42:20 +0000[diff] [blame]328 case MCSymbolRefExpr::VK_PPC_GOT_TPREL_LO:
Bill Schmidt9f0b4ec2012-12-14 17:02:38 +0000[diff] [blame]329 Type = ELF::R_PPC64_GOT_TPREL16_LO_DS;
Bill Schmidtca4a0c92012-12-04 16:18:08 +0000[diff] [blame]330 break;
Ulrich Weigand876a0d02013-06-21 14:44:15 +0000[diff] [blame]331 case MCSymbolRefExpr::VK_PPC_GOT_DTPREL:
332 Type = ELF::R_PPC64_GOT_DTPREL16_DS;
333 break;
334 case MCSymbolRefExpr::VK_PPC_GOT_DTPREL_LO:
335 Type = ELF::R_PPC64_GOT_DTPREL16_LO_DS;
336 break;
Bill Schmidt34627e32012-11-27 17:35:46 +0000[diff] [blame]337 }
Adhemerval Zanellaf2aceda2012-10-25 12:27:42 +0000[diff] [blame]338 break;
Bill Schmidt24b8dd62012-12-12 19:29:35 +0000[diff] [blame]339 case PPC::fixup_ppc_nofixup:
340 switch (Modifier) {
341 default: llvm_unreachable("Unsupported Modifier");
Ulrich Weigand52cf8e42013-07-09 16:41:09 +0000[diff] [blame]342 case MCSymbolRefExpr::VK_PPC_TLSGD:
Bill Schmidt24b8dd62012-12-12 19:29:35 +0000[diff] [blame]343 Type = ELF::R_PPC64_TLSGD;
344 break;
Ulrich Weigand52cf8e42013-07-09 16:41:09 +0000[diff] [blame]345 case MCSymbolRefExpr::VK_PPC_TLSLD:
Bill Schmidt24b8dd62012-12-12 19:29:35 +0000[diff] [blame]346 Type = ELF::R_PPC64_TLSLD;
347 break;
Ulrich Weigand5b427592013-07-05 12:22:36 +0000[diff] [blame]348 case MCSymbolRefExpr::VK_PPC_TLS:
349 Type = ELF::R_PPC64_TLS;
350 break;
Bill Schmidt24b8dd62012-12-12 19:29:35 +0000[diff] [blame]351 }
Bill Schmidtc56f1d32012-12-11 20:30:11 +0000[diff] [blame]352 break;
Adhemerval Zanellaf2aceda2012-10-25 12:27:42 +0000[diff] [blame]353 case FK_Data_8:
354 switch (Modifier) {
355 default: llvm_unreachable("Unsupported Modifier");
Ulrich Weigand68e2e1b2013-06-20 22:39:42 +0000[diff] [blame]356 case MCSymbolRefExpr::VK_PPC_TOCBASE:
Adhemerval Zanellaf2aceda2012-10-25 12:27:42 +0000[diff] [blame]357 Type = ELF::R_PPC64_TOC;
358 break;
359 case MCSymbolRefExpr::VK_None:
360 Type = ELF::R_PPC64_ADDR64;
361 break;
Ulrich Weigandf11efe72013-07-01 23:33:29 +0000[diff] [blame]362 case MCSymbolRefExpr::VK_PPC_DTPMOD:
363 Type = ELF::R_PPC64_DTPMOD64;
364 break;
365 case MCSymbolRefExpr::VK_PPC_TPREL:
366 Type = ELF::R_PPC64_TPREL64;
367 break;
368 case MCSymbolRefExpr::VK_PPC_DTPREL:
369 Type = ELF::R_PPC64_DTPREL64;
370 break;
Adhemerval Zanellaf2aceda2012-10-25 12:27:42 +0000[diff] [blame]371 }
372 break;
Rafael Espindola38a400d2011-12-22 01:57:09 +0000[diff] [blame]373 case FK_Data_4:
374 Type = ELF::R_PPC_ADDR32;
375 break;
376 case FK_Data_2:
377 Type = ELF::R_PPC_ADDR16;
378 break;
379 }
380 }
381 return Type;
382}
383
Adhemerval Zanellaf2aceda2012-10-25 12:27:42 +0000[diff] [blame]384unsigned PPCELFObjectWriter::GetRelocType(const MCValue &Target,
385 const MCFixup &Fixup,
386 bool IsPCRel,
387 bool IsRelocWithSymbol,
388 int64_t Addend) const {
389 return getRelocTypeInner(Target, Fixup, IsPCRel);
390}
391
Ulrich Weigand3a758612013-07-01 18:19:56 +0000[diff] [blame]392const MCSymbol *PPCELFObjectWriter::ExplicitRelSym(const MCAssembler &Asm,
393 const MCValue &Target,
394 const MCFragment &F,
395 const MCFixup &Fixup,
396 bool IsPCRel) const {
397 assert(Target.getSymA() && "SymA cannot be 0");
Rafael Espindola7fadc0e2014-03-20 02:12:01 +0000[diff] [blame]398 MCSymbolRefExpr::VariantKind Modifier = Fixup.getAccessVariant();
Ulrich Weigand3a758612013-07-01 18:19:56 +0000[diff] [blame]399
400 bool EmitThisSym;
401 switch (Modifier) {
402 // GOT references always need a relocation, even if the
403 // target symbol is local.
404 case MCSymbolRefExpr::VK_GOT:
405 case MCSymbolRefExpr::VK_PPC_GOT_LO:
406 case MCSymbolRefExpr::VK_PPC_GOT_HI:
407 case MCSymbolRefExpr::VK_PPC_GOT_HA:
408 EmitThisSym = true;
409 break;
410 default:
411 EmitThisSym = false;
412 break;
413 }
414
415 if (EmitThisSym)
416 return &Target.getSymA()->getSymbol().AliasedSymbol();
417 return NULL;
418}
419
Adhemerval Zanellaf2aceda2012-10-25 12:27:42 +0000[diff] [blame]420const MCSymbol *PPCELFObjectWriter::undefinedExplicitRelSym(const MCValue &Target,
421 const MCFixup &Fixup,
422 bool IsPCRel) const {
423 assert(Target.getSymA() && "SymA cannot be 0");
424 const MCSymbol &Symbol = Target.getSymA()->getSymbol().AliasedSymbol();
425
426 unsigned RelocType = getRelocTypeInner(Target, Fixup, IsPCRel);
427
428 // The .odp creation emits a relocation against the symbol ".TOC." which
429 // create a R_PPC64_TOC relocation. However the relocation symbol name
430 // in final object creation should be NULL, since the symbol does not
431 // really exist, it is just the reference to TOC base for the current
432 // object file.
433 bool EmitThisSym = RelocType != ELF::R_PPC64_TOC;
434
435 if (EmitThisSym && !Symbol.isTemporary())
436 return &Symbol;
437 return NULL;
438}
439
Rafael Espindola38a400d2011-12-22 01:57:09 +0000[diff] [blame]440MCObjectWriter *llvm::createPPCELFObjectWriter(raw_ostream &OS,
441 bool Is64Bit,
Ulrich Weigandcae3a172014-03-24 18:16:09 +0000[diff] [blame^]442 bool IsLittleEndian,
Rafael Espindola38a400d2011-12-22 01:57:09 +0000[diff] [blame]443 uint8_t OSABI) {
444 MCELFObjectTargetWriter *MOTW = new PPCELFObjectWriter(Is64Bit, OSABI);
Ulrich Weigandcae3a172014-03-24 18:16:09 +0000[diff] [blame^]445 return createELFObjectWriter(MOTW, OS, IsLittleEndian);
Rafael Espindola38a400d2011-12-22 01:57:09 +0000[diff] [blame]446}