10b57cec5SDimitry Andric //===- SPARCV9.cpp --------------------------------------------------------===//
20b57cec5SDimitry Andric //
30b57cec5SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
40b57cec5SDimitry Andric // See https://llvm.org/LICENSE.txt for license information.
50b57cec5SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
60b57cec5SDimitry Andric //
70b57cec5SDimitry Andric //===----------------------------------------------------------------------===//
80b57cec5SDimitry Andric
90b57cec5SDimitry Andric #include "Symbols.h"
100b57cec5SDimitry Andric #include "SyntheticSections.h"
110b57cec5SDimitry Andric #include "Target.h"
120b57cec5SDimitry Andric #include "lld/Common/ErrorHandler.h"
130b57cec5SDimitry Andric #include "llvm/Support/Endian.h"
140b57cec5SDimitry Andric
150b57cec5SDimitry Andric using namespace llvm;
160b57cec5SDimitry Andric using namespace llvm::support::endian;
170b57cec5SDimitry Andric using namespace llvm::ELF;
185ffd83dbSDimitry Andric using namespace lld;
195ffd83dbSDimitry Andric using namespace lld::elf;
200b57cec5SDimitry Andric
210b57cec5SDimitry Andric namespace {
220b57cec5SDimitry Andric class SPARCV9 final : public TargetInfo {
230b57cec5SDimitry Andric public:
240b57cec5SDimitry Andric SPARCV9();
250b57cec5SDimitry Andric RelExpr getRelExpr(RelType type, const Symbol &s,
260b57cec5SDimitry Andric const uint8_t *loc) const override;
27480093f4SDimitry Andric void writePlt(uint8_t *buf, const Symbol &sym,
28480093f4SDimitry Andric uint64_t pltEntryAddr) const override;
295ffd83dbSDimitry Andric void relocate(uint8_t *loc, const Relocation &rel,
305ffd83dbSDimitry Andric uint64_t val) const override;
310b57cec5SDimitry Andric };
320b57cec5SDimitry Andric } // namespace
330b57cec5SDimitry Andric
SPARCV9()340b57cec5SDimitry Andric SPARCV9::SPARCV9() {
350b57cec5SDimitry Andric copyRel = R_SPARC_COPY;
360b57cec5SDimitry Andric gotRel = R_SPARC_GLOB_DAT;
370b57cec5SDimitry Andric pltRel = R_SPARC_JMP_SLOT;
380b57cec5SDimitry Andric relativeRel = R_SPARC_RELATIVE;
390b57cec5SDimitry Andric symbolicRel = R_SPARC_64;
400b57cec5SDimitry Andric pltEntrySize = 32;
410b57cec5SDimitry Andric pltHeaderSize = 4 * pltEntrySize;
420b57cec5SDimitry Andric
430b57cec5SDimitry Andric defaultCommonPageSize = 8192;
440b57cec5SDimitry Andric defaultMaxPageSize = 0x100000;
450b57cec5SDimitry Andric defaultImageBase = 0x100000;
460b57cec5SDimitry Andric }
470b57cec5SDimitry Andric
getRelExpr(RelType type,const Symbol & s,const uint8_t * loc) const480b57cec5SDimitry Andric RelExpr SPARCV9::getRelExpr(RelType type, const Symbol &s,
490b57cec5SDimitry Andric const uint8_t *loc) const {
500b57cec5SDimitry Andric switch (type) {
510b57cec5SDimitry Andric case R_SPARC_32:
520b57cec5SDimitry Andric case R_SPARC_UA32:
530b57cec5SDimitry Andric case R_SPARC_64:
540b57cec5SDimitry Andric case R_SPARC_UA64:
555ffd83dbSDimitry Andric case R_SPARC_H44:
565ffd83dbSDimitry Andric case R_SPARC_M44:
575ffd83dbSDimitry Andric case R_SPARC_L44:
585ffd83dbSDimitry Andric case R_SPARC_HH22:
595ffd83dbSDimitry Andric case R_SPARC_HM10:
605ffd83dbSDimitry Andric case R_SPARC_LM22:
615ffd83dbSDimitry Andric case R_SPARC_HI22:
625ffd83dbSDimitry Andric case R_SPARC_LO10:
630b57cec5SDimitry Andric return R_ABS;
640b57cec5SDimitry Andric case R_SPARC_PC10:
650b57cec5SDimitry Andric case R_SPARC_PC22:
660b57cec5SDimitry Andric case R_SPARC_DISP32:
670b57cec5SDimitry Andric case R_SPARC_WDISP30:
680b57cec5SDimitry Andric return R_PC;
690b57cec5SDimitry Andric case R_SPARC_GOT10:
700b57cec5SDimitry Andric return R_GOT_OFF;
710b57cec5SDimitry Andric case R_SPARC_GOT22:
720b57cec5SDimitry Andric return R_GOT_OFF;
730b57cec5SDimitry Andric case R_SPARC_WPLT30:
740b57cec5SDimitry Andric return R_PLT_PC;
750b57cec5SDimitry Andric case R_SPARC_NONE:
760b57cec5SDimitry Andric return R_NONE;
775ffd83dbSDimitry Andric case R_SPARC_TLS_LE_HIX22:
785ffd83dbSDimitry Andric case R_SPARC_TLS_LE_LOX10:
79e8d8bef9SDimitry Andric return R_TPREL;
800b57cec5SDimitry Andric default:
810b57cec5SDimitry Andric error(getErrorLocation(loc) + "unknown relocation (" + Twine(type) +
820b57cec5SDimitry Andric ") against symbol " + toString(s));
830b57cec5SDimitry Andric return R_NONE;
840b57cec5SDimitry Andric }
850b57cec5SDimitry Andric }
860b57cec5SDimitry Andric
relocate(uint8_t * loc,const Relocation & rel,uint64_t val) const875ffd83dbSDimitry Andric void SPARCV9::relocate(uint8_t *loc, const Relocation &rel,
885ffd83dbSDimitry Andric uint64_t val) const {
895ffd83dbSDimitry Andric switch (rel.type) {
900b57cec5SDimitry Andric case R_SPARC_32:
910b57cec5SDimitry Andric case R_SPARC_UA32:
920b57cec5SDimitry Andric // V-word32
935ffd83dbSDimitry Andric checkUInt(loc, val, 32, rel);
940b57cec5SDimitry Andric write32be(loc, val);
950b57cec5SDimitry Andric break;
960b57cec5SDimitry Andric case R_SPARC_DISP32:
970b57cec5SDimitry Andric // V-disp32
985ffd83dbSDimitry Andric checkInt(loc, val, 32, rel);
990b57cec5SDimitry Andric write32be(loc, val);
1000b57cec5SDimitry Andric break;
1010b57cec5SDimitry Andric case R_SPARC_WDISP30:
1020b57cec5SDimitry Andric case R_SPARC_WPLT30:
1030b57cec5SDimitry Andric // V-disp30
1045ffd83dbSDimitry Andric checkInt(loc, val, 32, rel);
1050b57cec5SDimitry Andric write32be(loc, (read32be(loc) & ~0x3fffffff) | ((val >> 2) & 0x3fffffff));
1060b57cec5SDimitry Andric break;
1070b57cec5SDimitry Andric case R_SPARC_22:
1080b57cec5SDimitry Andric // V-imm22
1095ffd83dbSDimitry Andric checkUInt(loc, val, 22, rel);
1100b57cec5SDimitry Andric write32be(loc, (read32be(loc) & ~0x003fffff) | (val & 0x003fffff));
1110b57cec5SDimitry Andric break;
1120b57cec5SDimitry Andric case R_SPARC_GOT22:
1130b57cec5SDimitry Andric case R_SPARC_PC22:
1145ffd83dbSDimitry Andric case R_SPARC_LM22:
1150b57cec5SDimitry Andric // T-imm22
1160b57cec5SDimitry Andric write32be(loc, (read32be(loc) & ~0x003fffff) | ((val >> 10) & 0x003fffff));
1170b57cec5SDimitry Andric break;
1185ffd83dbSDimitry Andric case R_SPARC_HI22:
1195ffd83dbSDimitry Andric // V-imm22
1205ffd83dbSDimitry Andric checkUInt(loc, val >> 10, 22, rel);
1215ffd83dbSDimitry Andric write32be(loc, (read32be(loc) & ~0x003fffff) | ((val >> 10) & 0x003fffff));
1225ffd83dbSDimitry Andric break;
1230b57cec5SDimitry Andric case R_SPARC_WDISP19:
1240b57cec5SDimitry Andric // V-disp19
1255ffd83dbSDimitry Andric checkInt(loc, val, 21, rel);
1260b57cec5SDimitry Andric write32be(loc, (read32be(loc) & ~0x0007ffff) | ((val >> 2) & 0x0007ffff));
1270b57cec5SDimitry Andric break;
1280b57cec5SDimitry Andric case R_SPARC_GOT10:
1290b57cec5SDimitry Andric case R_SPARC_PC10:
1300b57cec5SDimitry Andric // T-simm10
1310b57cec5SDimitry Andric write32be(loc, (read32be(loc) & ~0x000003ff) | (val & 0x000003ff));
1320b57cec5SDimitry Andric break;
1335ffd83dbSDimitry Andric case R_SPARC_LO10:
1345ffd83dbSDimitry Andric // T-simm13
1355ffd83dbSDimitry Andric write32be(loc, (read32be(loc) & ~0x00001fff) | (val & 0x000003ff));
1365ffd83dbSDimitry Andric break;
1370b57cec5SDimitry Andric case R_SPARC_64:
1380b57cec5SDimitry Andric case R_SPARC_UA64:
1390b57cec5SDimitry Andric // V-xword64
1400b57cec5SDimitry Andric write64be(loc, val);
1410b57cec5SDimitry Andric break;
1425ffd83dbSDimitry Andric case R_SPARC_HH22:
1435ffd83dbSDimitry Andric // V-imm22
1445ffd83dbSDimitry Andric checkUInt(loc, val >> 42, 22, rel);
1455ffd83dbSDimitry Andric write32be(loc, (read32be(loc) & ~0x003fffff) | ((val >> 42) & 0x003fffff));
1465ffd83dbSDimitry Andric break;
1475ffd83dbSDimitry Andric case R_SPARC_HM10:
1485ffd83dbSDimitry Andric // T-simm13
1495ffd83dbSDimitry Andric write32be(loc, (read32be(loc) & ~0x00001fff) | ((val >> 32) & 0x000003ff));
1505ffd83dbSDimitry Andric break;
1515ffd83dbSDimitry Andric case R_SPARC_H44:
1525ffd83dbSDimitry Andric // V-imm22
1535ffd83dbSDimitry Andric checkUInt(loc, val >> 22, 22, rel);
1545ffd83dbSDimitry Andric write32be(loc, (read32be(loc) & ~0x003fffff) | ((val >> 22) & 0x003fffff));
1555ffd83dbSDimitry Andric break;
1565ffd83dbSDimitry Andric case R_SPARC_M44:
1575ffd83dbSDimitry Andric // T-imm10
1585ffd83dbSDimitry Andric write32be(loc, (read32be(loc) & ~0x000003ff) | ((val >> 12) & 0x000003ff));
1595ffd83dbSDimitry Andric break;
1605ffd83dbSDimitry Andric case R_SPARC_L44:
1615ffd83dbSDimitry Andric // T-imm13
1625ffd83dbSDimitry Andric write32be(loc, (read32be(loc) & ~0x00001fff) | (val & 0x00000fff));
1635ffd83dbSDimitry Andric break;
1645ffd83dbSDimitry Andric case R_SPARC_TLS_LE_HIX22:
1655ffd83dbSDimitry Andric // T-imm22
1665ffd83dbSDimitry Andric write32be(loc, (read32be(loc) & ~0x003fffff) | ((~val >> 10) & 0x003fffff));
1675ffd83dbSDimitry Andric break;
1685ffd83dbSDimitry Andric case R_SPARC_TLS_LE_LOX10:
1695ffd83dbSDimitry Andric // T-simm13
1705ffd83dbSDimitry Andric write32be(loc, (read32be(loc) & ~0x00001fff) | (val & 0x000003ff) | 0x1C00);
1715ffd83dbSDimitry Andric break;
1720b57cec5SDimitry Andric default:
1730b57cec5SDimitry Andric llvm_unreachable("unknown relocation");
1740b57cec5SDimitry Andric }
1750b57cec5SDimitry Andric }
1760b57cec5SDimitry Andric
writePlt(uint8_t * buf,const Symbol &,uint64_t pltEntryAddr) const177480093f4SDimitry Andric void SPARCV9::writePlt(uint8_t *buf, const Symbol & /*sym*/,
178480093f4SDimitry Andric uint64_t pltEntryAddr) const {
1790b57cec5SDimitry Andric const uint8_t pltData[] = {
1800b57cec5SDimitry Andric 0x03, 0x00, 0x00, 0x00, // sethi (. - .PLT0), %g1
1810b57cec5SDimitry Andric 0x30, 0x68, 0x00, 0x00, // ba,a %xcc, .PLT1
1820b57cec5SDimitry Andric 0x01, 0x00, 0x00, 0x00, // nop
1830b57cec5SDimitry Andric 0x01, 0x00, 0x00, 0x00, // nop
1840b57cec5SDimitry Andric 0x01, 0x00, 0x00, 0x00, // nop
1850b57cec5SDimitry Andric 0x01, 0x00, 0x00, 0x00, // nop
1860b57cec5SDimitry Andric 0x01, 0x00, 0x00, 0x00, // nop
1870b57cec5SDimitry Andric 0x01, 0x00, 0x00, 0x00 // nop
1880b57cec5SDimitry Andric };
1890b57cec5SDimitry Andric memcpy(buf, pltData, sizeof(pltData));
1900b57cec5SDimitry Andric
191480093f4SDimitry Andric uint64_t off = pltEntryAddr - in.plt->getVA();
1925ffd83dbSDimitry Andric relocateNoSym(buf, R_SPARC_22, off);
1935ffd83dbSDimitry Andric relocateNoSym(buf + 4, R_SPARC_WDISP19, -(off + 4 - pltEntrySize));
1940b57cec5SDimitry Andric }
1950b57cec5SDimitry Andric
getSPARCV9TargetInfo()1965ffd83dbSDimitry Andric TargetInfo *elf::getSPARCV9TargetInfo() {
1970b57cec5SDimitry Andric static SPARCV9 target;
1980b57cec5SDimitry Andric return ⌖
1990b57cec5SDimitry Andric }
200