Bug Summary

File:lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp
Warning:line 212, column 7
Value stored to 'Opcode' is never read

Annotated Source Code

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clang -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name MipsMCCodeEmitter.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -mrelocation-model pic -pic-level 2 -mthread-model posix -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -momit-leaf-frame-pointer -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-8/lib/clang/8.0.0 -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-8~svn345461/build-llvm/lib/Target/Mips/MCTargetDesc -I /build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc -I /build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips -I /build/llvm-toolchain-snapshot-8~svn345461/build-llvm/lib/Target/Mips -I /build/llvm-toolchain-snapshot-8~svn345461/build-llvm/include -I /build/llvm-toolchain-snapshot-8~svn345461/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/include/clang/8.0.0/include/ -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-8/lib/clang/8.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++11 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-8~svn345461/build-llvm/lib/Target/Mips/MCTargetDesc -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -fobjc-runtime=gcc -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2018-10-27-211344-32123-1 -x c++ /build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp -faddrsig
1//===-- MipsMCCodeEmitter.cpp - Convert Mips Code to Machine Code ---------===//
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// This file implements the MipsMCCodeEmitter class.
11//
12//===----------------------------------------------------------------------===//
13
14#include "MipsMCCodeEmitter.h"
15#include "MCTargetDesc/MipsFixupKinds.h"
16#include "MCTargetDesc/MipsMCExpr.h"
17#include "MCTargetDesc/MipsMCTargetDesc.h"
18#include "llvm/ADT/APFloat.h"
19#include "llvm/ADT/APInt.h"
20#include "llvm/ADT/SmallVector.h"
21#include "llvm/MC/MCContext.h"
22#include "llvm/MC/MCExpr.h"
23#include "llvm/MC/MCFixup.h"
24#include "llvm/MC/MCInst.h"
25#include "llvm/MC/MCInstrDesc.h"
26#include "llvm/MC/MCInstrInfo.h"
27#include "llvm/MC/MCRegisterInfo.h"
28#include "llvm/MC/MCSubtargetInfo.h"
29#include "llvm/Support/Casting.h"
30#include "llvm/Support/ErrorHandling.h"
31#include "llvm/Support/raw_ostream.h"
32#include <cassert>
33#include <cstdint>
34
35using namespace llvm;
36
37#define DEBUG_TYPE"mccodeemitter" "mccodeemitter"
38
39#define GET_INSTRMAP_INFO
40#include "MipsGenInstrInfo.inc"
41#undef GET_INSTRMAP_INFO
42
43namespace llvm {
44
45MCCodeEmitter *createMipsMCCodeEmitterEB(const MCInstrInfo &MCII,
46 const MCRegisterInfo &MRI,
47 MCContext &Ctx) {
48 return new MipsMCCodeEmitter(MCII, Ctx, false);
49}
50
51MCCodeEmitter *createMipsMCCodeEmitterEL(const MCInstrInfo &MCII,
52 const MCRegisterInfo &MRI,
53 MCContext &Ctx) {
54 return new MipsMCCodeEmitter(MCII, Ctx, true);
55}
56
57} // end namespace llvm
58
59// If the D<shift> instruction has a shift amount that is greater
60// than 31 (checked in calling routine), lower it to a D<shift>32 instruction
61static void LowerLargeShift(MCInst& Inst) {
62 assert(Inst.getNumOperands() == 3 && "Invalid no. of operands for shift!")((Inst.getNumOperands() == 3 && "Invalid no. of operands for shift!"
) ? static_cast<void> (0) : __assert_fail ("Inst.getNumOperands() == 3 && \"Invalid no. of operands for shift!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 62, __PRETTY_FUNCTION__))
;
63 assert(Inst.getOperand(2).isImm())((Inst.getOperand(2).isImm()) ? static_cast<void> (0) :
__assert_fail ("Inst.getOperand(2).isImm()", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 63, __PRETTY_FUNCTION__))
;
64
65 int64_t Shift = Inst.getOperand(2).getImm();
66 if (Shift <= 31)
67 return; // Do nothing
68 Shift -= 32;
69
70 // saminus32
71 Inst.getOperand(2).setImm(Shift);
72
73 switch (Inst.getOpcode()) {
74 default:
75 // Calling function is not synchronized
76 llvm_unreachable("Unexpected shift instruction")::llvm::llvm_unreachable_internal("Unexpected shift instruction"
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 76)
;
77 case Mips::DSLL:
78 Inst.setOpcode(Mips::DSLL32);
79 return;
80 case Mips::DSRL:
81 Inst.setOpcode(Mips::DSRL32);
82 return;
83 case Mips::DSRA:
84 Inst.setOpcode(Mips::DSRA32);
85 return;
86 case Mips::DROTR:
87 Inst.setOpcode(Mips::DROTR32);
88 return;
89 }
90}
91
92// Fix a bad compact branch encoding for beqc/bnec.
93void MipsMCCodeEmitter::LowerCompactBranch(MCInst& Inst) const {
94 // Encoding may be illegal !(rs < rt), but this situation is
95 // easily fixed.
96 unsigned RegOp0 = Inst.getOperand(0).getReg();
97 unsigned RegOp1 = Inst.getOperand(1).getReg();
98
99 unsigned Reg0 = Ctx.getRegisterInfo()->getEncodingValue(RegOp0);
100 unsigned Reg1 = Ctx.getRegisterInfo()->getEncodingValue(RegOp1);
101
102 if (Inst.getOpcode() == Mips::BNEC || Inst.getOpcode() == Mips::BEQC ||
103 Inst.getOpcode() == Mips::BNEC64 || Inst.getOpcode() == Mips::BEQC64) {
104 assert(Reg0 != Reg1 && "Instruction has bad operands ($rs == $rt)!")((Reg0 != Reg1 && "Instruction has bad operands ($rs == $rt)!"
) ? static_cast<void> (0) : __assert_fail ("Reg0 != Reg1 && \"Instruction has bad operands ($rs == $rt)!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 104, __PRETTY_FUNCTION__))
;
105 if (Reg0 < Reg1)
106 return;
107 } else if (Inst.getOpcode() == Mips::BNVC || Inst.getOpcode() == Mips::BOVC) {
108 if (Reg0 >= Reg1)
109 return;
110 } else if (Inst.getOpcode() == Mips::BNVC_MMR6 ||
111 Inst.getOpcode() == Mips::BOVC_MMR6) {
112 if (Reg1 >= Reg0)
113 return;
114 } else
115 llvm_unreachable("Cannot rewrite unknown branch!")::llvm::llvm_unreachable_internal("Cannot rewrite unknown branch!"
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 115)
;
116
117 Inst.getOperand(0).setReg(RegOp1);
118 Inst.getOperand(1).setReg(RegOp0);
119}
120
121bool MipsMCCodeEmitter::isMicroMips(const MCSubtargetInfo &STI) const {
122 return STI.getFeatureBits()[Mips::FeatureMicroMips];
123}
124
125bool MipsMCCodeEmitter::isMips32r6(const MCSubtargetInfo &STI) const {
126 return STI.getFeatureBits()[Mips::FeatureMips32r6];
127}
128
129void MipsMCCodeEmitter::EmitByte(unsigned char C, raw_ostream &OS) const {
130 OS << (char)C;
131}
132
133void MipsMCCodeEmitter::EmitInstruction(uint64_t Val, unsigned Size,
134 const MCSubtargetInfo &STI,
135 raw_ostream &OS) const {
136 // Output the instruction encoding in little endian byte order.
137 // Little-endian byte ordering:
138 // mips32r2: 4 | 3 | 2 | 1
139 // microMIPS: 2 | 1 | 4 | 3
140 if (IsLittleEndian && Size == 4 && isMicroMips(STI)) {
141 EmitInstruction(Val >> 16, 2, STI, OS);
142 EmitInstruction(Val, 2, STI, OS);
143 } else {
144 for (unsigned i = 0; i < Size; ++i) {
145 unsigned Shift = IsLittleEndian ? i * 8 : (Size - 1 - i) * 8;
146 EmitByte((Val >> Shift) & 0xff, OS);
147 }
148 }
149}
150
151/// encodeInstruction - Emit the instruction.
152/// Size the instruction with Desc.getSize().
153void MipsMCCodeEmitter::
154encodeInstruction(const MCInst &MI, raw_ostream &OS,
155 SmallVectorImpl<MCFixup> &Fixups,
156 const MCSubtargetInfo &STI) const
157{
158 // Non-pseudo instructions that get changed for direct object
159 // only based on operand values.
160 // If this list of instructions get much longer we will move
161 // the check to a function call. Until then, this is more efficient.
162 MCInst TmpInst = MI;
163 switch (MI.getOpcode()) {
164 // If shift amount is >= 32 it the inst needs to be lowered further
165 case Mips::DSLL:
166 case Mips::DSRL:
167 case Mips::DSRA:
168 case Mips::DROTR:
169 LowerLargeShift(TmpInst);
170 break;
171 // Compact branches, enforce encoding restrictions.
172 case Mips::BEQC:
173 case Mips::BNEC:
174 case Mips::BEQC64:
175 case Mips::BNEC64:
176 case Mips::BOVC:
177 case Mips::BOVC_MMR6:
178 case Mips::BNVC:
179 case Mips::BNVC_MMR6:
180 LowerCompactBranch(TmpInst);
181 }
182
183 unsigned long N = Fixups.size();
184 uint32_t Binary = getBinaryCodeForInstr(TmpInst, Fixups, STI);
185
186 // Check for unimplemented opcodes.
187 // Unfortunately in MIPS both NOP and SLL will come in with Binary == 0
188 // so we have to special check for them.
189 unsigned Opcode = TmpInst.getOpcode();
190 if ((Opcode != Mips::NOP) && (Opcode != Mips::SLL) &&
191 (Opcode != Mips::SLL_MM) && (Opcode != Mips::SLL_MMR6) && !Binary)
192 llvm_unreachable("unimplemented opcode in encodeInstruction()")::llvm::llvm_unreachable_internal("unimplemented opcode in encodeInstruction()"
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 192)
;
193
194 int NewOpcode = -1;
195 if (isMicroMips(STI)) {
196 if (isMips32r6(STI)) {
197 NewOpcode = Mips::MipsR62MicroMipsR6(Opcode, Mips::Arch_micromipsr6);
198 if (NewOpcode == -1)
199 NewOpcode = Mips::Std2MicroMipsR6(Opcode, Mips::Arch_micromipsr6);
200 }
201 else
202 NewOpcode = Mips::Std2MicroMips(Opcode, Mips::Arch_micromips);
203
204 // Check whether it is Dsp instruction.
205 if (NewOpcode == -1)
206 NewOpcode = Mips::Dsp2MicroMips(Opcode, Mips::Arch_mmdsp);
207
208 if (NewOpcode != -1) {
209 if (Fixups.size() > N)
210 Fixups.pop_back();
211
212 Opcode = NewOpcode;
Value stored to 'Opcode' is never read
213 TmpInst.setOpcode (NewOpcode);
214 Binary = getBinaryCodeForInstr(TmpInst, Fixups, STI);
215 }
216
217 if (((MI.getOpcode() == Mips::MOVEP_MM) ||
218 (MI.getOpcode() == Mips::MOVEP_MMR6))) {
219 unsigned RegPair = getMovePRegPairOpValue(MI, 0, Fixups, STI);
220 Binary = (Binary & 0xFFFFFC7F) | (RegPair << 7);
221 }
222 }
223
224 const MCInstrDesc &Desc = MCII.get(TmpInst.getOpcode());
225
226 // Get byte count of instruction
227 unsigned Size = Desc.getSize();
228 if (!Size)
229 llvm_unreachable("Desc.getSize() returns 0")::llvm::llvm_unreachable_internal("Desc.getSize() returns 0",
"/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 229)
;
230
231 EmitInstruction(Binary, Size, STI, OS);
232}
233
234/// getBranchTargetOpValue - Return binary encoding of the branch
235/// target operand. If the machine operand requires relocation,
236/// record the relocation and return zero.
237unsigned MipsMCCodeEmitter::
238getBranchTargetOpValue(const MCInst &MI, unsigned OpNo,
239 SmallVectorImpl<MCFixup> &Fixups,
240 const MCSubtargetInfo &STI) const {
241 const MCOperand &MO = MI.getOperand(OpNo);
242
243 // If the destination is an immediate, divide by 4.
244 if (MO.isImm()) return MO.getImm() >> 2;
245
246 assert(MO.isExpr() &&((MO.isExpr() && "getBranchTargetOpValue expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTargetOpValue expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 247, __PRETTY_FUNCTION__))
247 "getBranchTargetOpValue expects only expressions or immediates")((MO.isExpr() && "getBranchTargetOpValue expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTargetOpValue expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 247, __PRETTY_FUNCTION__))
;
248
249 const MCExpr *FixupExpression = MCBinaryExpr::createAdd(
250 MO.getExpr(), MCConstantExpr::create(-4, Ctx), Ctx);
251 Fixups.push_back(MCFixup::create(0, FixupExpression,
252 MCFixupKind(Mips::fixup_Mips_PC16)));
253 return 0;
254}
255
256/// getBranchTargetOpValue1SImm16 - Return binary encoding of the branch
257/// target operand. If the machine operand requires relocation,
258/// record the relocation and return zero.
259unsigned MipsMCCodeEmitter::
260getBranchTargetOpValue1SImm16(const MCInst &MI, unsigned OpNo,
261 SmallVectorImpl<MCFixup> &Fixups,
262 const MCSubtargetInfo &STI) const {
263 const MCOperand &MO = MI.getOperand(OpNo);
264
265 // If the destination is an immediate, divide by 2.
266 if (MO.isImm()) return MO.getImm() >> 1;
267
268 assert(MO.isExpr() &&((MO.isExpr() && "getBranchTargetOpValue expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTargetOpValue expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 269, __PRETTY_FUNCTION__))
269 "getBranchTargetOpValue expects only expressions or immediates")((MO.isExpr() && "getBranchTargetOpValue expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTargetOpValue expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 269, __PRETTY_FUNCTION__))
;
270
271 const MCExpr *FixupExpression = MCBinaryExpr::createAdd(
272 MO.getExpr(), MCConstantExpr::create(-4, Ctx), Ctx);
273 Fixups.push_back(MCFixup::create(0, FixupExpression,
274 MCFixupKind(Mips::fixup_Mips_PC16)));
275 return 0;
276}
277
278/// getBranchTargetOpValueMMR6 - Return binary encoding of the branch
279/// target operand. If the machine operand requires relocation,
280/// record the relocation and return zero.
281unsigned MipsMCCodeEmitter::
282getBranchTargetOpValueMMR6(const MCInst &MI, unsigned OpNo,
283 SmallVectorImpl<MCFixup> &Fixups,
284 const MCSubtargetInfo &STI) const {
285 const MCOperand &MO = MI.getOperand(OpNo);
286
287 // If the destination is an immediate, divide by 2.
288 if (MO.isImm())
289 return MO.getImm() >> 1;
290
291 assert(MO.isExpr() &&((MO.isExpr() && "getBranchTargetOpValueMMR6 expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTargetOpValueMMR6 expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 292, __PRETTY_FUNCTION__))
292 "getBranchTargetOpValueMMR6 expects only expressions or immediates")((MO.isExpr() && "getBranchTargetOpValueMMR6 expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTargetOpValueMMR6 expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 292, __PRETTY_FUNCTION__))
;
293
294 const MCExpr *FixupExpression = MCBinaryExpr::createAdd(
295 MO.getExpr(), MCConstantExpr::create(-2, Ctx), Ctx);
296 Fixups.push_back(MCFixup::create(0, FixupExpression,
297 MCFixupKind(Mips::fixup_Mips_PC16)));
298 return 0;
299}
300
301/// getBranchTargetOpValueLsl2MMR6 - Return binary encoding of the branch
302/// target operand. If the machine operand requires relocation,
303/// record the relocation and return zero.
304unsigned MipsMCCodeEmitter::
305getBranchTargetOpValueLsl2MMR6(const MCInst &MI, unsigned OpNo,
306 SmallVectorImpl<MCFixup> &Fixups,
307 const MCSubtargetInfo &STI) const {
308 const MCOperand &MO = MI.getOperand(OpNo);
309
310 // If the destination is an immediate, divide by 4.
311 if (MO.isImm())
312 return MO.getImm() >> 2;
313
314 assert(MO.isExpr() &&((MO.isExpr() && "getBranchTargetOpValueLsl2MMR6 expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTargetOpValueLsl2MMR6 expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 315, __PRETTY_FUNCTION__))
315 "getBranchTargetOpValueLsl2MMR6 expects only expressions or immediates")((MO.isExpr() && "getBranchTargetOpValueLsl2MMR6 expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTargetOpValueLsl2MMR6 expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 315, __PRETTY_FUNCTION__))
;
316
317 const MCExpr *FixupExpression = MCBinaryExpr::createAdd(
318 MO.getExpr(), MCConstantExpr::create(-4, Ctx), Ctx);
319 Fixups.push_back(MCFixup::create(0, FixupExpression,
320 MCFixupKind(Mips::fixup_Mips_PC16)));
321 return 0;
322}
323
324/// getBranchTarget7OpValueMM - Return binary encoding of the microMIPS branch
325/// target operand. If the machine operand requires relocation,
326/// record the relocation and return zero.
327unsigned MipsMCCodeEmitter::
328getBranchTarget7OpValueMM(const MCInst &MI, unsigned OpNo,
329 SmallVectorImpl<MCFixup> &Fixups,
330 const MCSubtargetInfo &STI) const {
331 const MCOperand &MO = MI.getOperand(OpNo);
332
333 // If the destination is an immediate, divide by 2.
334 if (MO.isImm()) return MO.getImm() >> 1;
335
336 assert(MO.isExpr() &&((MO.isExpr() && "getBranchTargetOpValueMM expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTargetOpValueMM expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 337, __PRETTY_FUNCTION__))
337 "getBranchTargetOpValueMM expects only expressions or immediates")((MO.isExpr() && "getBranchTargetOpValueMM expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTargetOpValueMM expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 337, __PRETTY_FUNCTION__))
;
338
339 const MCExpr *Expr = MO.getExpr();
340 Fixups.push_back(MCFixup::create(0, Expr,
341 MCFixupKind(Mips::fixup_MICROMIPS_PC7_S1)));
342 return 0;
343}
344
345/// getBranchTargetOpValueMMPC10 - Return binary encoding of the microMIPS
346/// 10-bit branch target operand. If the machine operand requires relocation,
347/// record the relocation and return zero.
348unsigned MipsMCCodeEmitter::
349getBranchTargetOpValueMMPC10(const MCInst &MI, unsigned OpNo,
350 SmallVectorImpl<MCFixup> &Fixups,
351 const MCSubtargetInfo &STI) const {
352 const MCOperand &MO = MI.getOperand(OpNo);
353
354 // If the destination is an immediate, divide by 2.
355 if (MO.isImm()) return MO.getImm() >> 1;
356
357 assert(MO.isExpr() &&((MO.isExpr() && "getBranchTargetOpValuePC10 expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTargetOpValuePC10 expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 358, __PRETTY_FUNCTION__))
358 "getBranchTargetOpValuePC10 expects only expressions or immediates")((MO.isExpr() && "getBranchTargetOpValuePC10 expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTargetOpValuePC10 expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 358, __PRETTY_FUNCTION__))
;
359
360 const MCExpr *Expr = MO.getExpr();
361 Fixups.push_back(MCFixup::create(0, Expr,
362 MCFixupKind(Mips::fixup_MICROMIPS_PC10_S1)));
363 return 0;
364}
365
366/// getBranchTargetOpValue - Return binary encoding of the microMIPS branch
367/// target operand. If the machine operand requires relocation,
368/// record the relocation and return zero.
369unsigned MipsMCCodeEmitter::
370getBranchTargetOpValueMM(const MCInst &MI, unsigned OpNo,
371 SmallVectorImpl<MCFixup> &Fixups,
372 const MCSubtargetInfo &STI) const {
373 const MCOperand &MO = MI.getOperand(OpNo);
374
375 // If the destination is an immediate, divide by 2.
376 if (MO.isImm()) return MO.getImm() >> 1;
377
378 assert(MO.isExpr() &&((MO.isExpr() && "getBranchTargetOpValueMM expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTargetOpValueMM expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 379, __PRETTY_FUNCTION__))
379 "getBranchTargetOpValueMM expects only expressions or immediates")((MO.isExpr() && "getBranchTargetOpValueMM expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTargetOpValueMM expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 379, __PRETTY_FUNCTION__))
;
380
381 const MCExpr *Expr = MO.getExpr();
382 Fixups.push_back(MCFixup::create(0, Expr,
383 MCFixupKind(Mips::
384 fixup_MICROMIPS_PC16_S1)));
385 return 0;
386}
387
388/// getBranchTarget21OpValue - Return binary encoding of the branch
389/// target operand. If the machine operand requires relocation,
390/// record the relocation and return zero.
391unsigned MipsMCCodeEmitter::
392getBranchTarget21OpValue(const MCInst &MI, unsigned OpNo,
393 SmallVectorImpl<MCFixup> &Fixups,
394 const MCSubtargetInfo &STI) const {
395 const MCOperand &MO = MI.getOperand(OpNo);
396
397 // If the destination is an immediate, divide by 4.
398 if (MO.isImm()) return MO.getImm() >> 2;
399
400 assert(MO.isExpr() &&((MO.isExpr() && "getBranchTarget21OpValue expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTarget21OpValue expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 401, __PRETTY_FUNCTION__))
401 "getBranchTarget21OpValue expects only expressions or immediates")((MO.isExpr() && "getBranchTarget21OpValue expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTarget21OpValue expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 401, __PRETTY_FUNCTION__))
;
402
403 const MCExpr *FixupExpression = MCBinaryExpr::createAdd(
404 MO.getExpr(), MCConstantExpr::create(-4, Ctx), Ctx);
405 Fixups.push_back(MCFixup::create(0, FixupExpression,
406 MCFixupKind(Mips::fixup_MIPS_PC21_S2)));
407 return 0;
408}
409
410/// getBranchTarget21OpValueMM - Return binary encoding of the branch
411/// target operand for microMIPS. If the machine operand requires
412/// relocation, record the relocation and return zero.
413unsigned MipsMCCodeEmitter::
414getBranchTarget21OpValueMM(const MCInst &MI, unsigned OpNo,
415 SmallVectorImpl<MCFixup> &Fixups,
416 const MCSubtargetInfo &STI) const {
417 const MCOperand &MO = MI.getOperand(OpNo);
418
419 // If the destination is an immediate, divide by 4.
420 if (MO.isImm()) return MO.getImm() >> 2;
421
422 assert(MO.isExpr() &&((MO.isExpr() && "getBranchTarget21OpValueMM expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTarget21OpValueMM expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 423, __PRETTY_FUNCTION__))
423 "getBranchTarget21OpValueMM expects only expressions or immediates")((MO.isExpr() && "getBranchTarget21OpValueMM expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTarget21OpValueMM expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 423, __PRETTY_FUNCTION__))
;
424
425 const MCExpr *FixupExpression = MCBinaryExpr::createAdd(
426 MO.getExpr(), MCConstantExpr::create(-4, Ctx), Ctx);
427 Fixups.push_back(MCFixup::create(0, FixupExpression,
428 MCFixupKind(Mips::fixup_MICROMIPS_PC21_S1)));
429 return 0;
430}
431
432/// getBranchTarget26OpValue - Return binary encoding of the branch
433/// target operand. If the machine operand requires relocation,
434/// record the relocation and return zero.
435unsigned MipsMCCodeEmitter::
436getBranchTarget26OpValue(const MCInst &MI, unsigned OpNo,
437 SmallVectorImpl<MCFixup> &Fixups,
438 const MCSubtargetInfo &STI) const {
439 const MCOperand &MO = MI.getOperand(OpNo);
440
441 // If the destination is an immediate, divide by 4.
442 if (MO.isImm()) return MO.getImm() >> 2;
443
444 assert(MO.isExpr() &&((MO.isExpr() && "getBranchTarget26OpValue expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTarget26OpValue expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 445, __PRETTY_FUNCTION__))
445 "getBranchTarget26OpValue expects only expressions or immediates")((MO.isExpr() && "getBranchTarget26OpValue expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTarget26OpValue expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 445, __PRETTY_FUNCTION__))
;
446
447 const MCExpr *FixupExpression = MCBinaryExpr::createAdd(
448 MO.getExpr(), MCConstantExpr::create(-4, Ctx), Ctx);
449 Fixups.push_back(MCFixup::create(0, FixupExpression,
450 MCFixupKind(Mips::fixup_MIPS_PC26_S2)));
451 return 0;
452}
453
454/// getBranchTarget26OpValueMM - Return binary encoding of the branch
455/// target operand. If the machine operand requires relocation,
456/// record the relocation and return zero.
457unsigned MipsMCCodeEmitter::getBranchTarget26OpValueMM(
458 const MCInst &MI, unsigned OpNo, SmallVectorImpl<MCFixup> &Fixups,
459 const MCSubtargetInfo &STI) const {
460 const MCOperand &MO = MI.getOperand(OpNo);
461
462 // If the destination is an immediate, divide by 2.
463 if (MO.isImm())
464 return MO.getImm() >> 1;
465
466 assert(MO.isExpr() &&((MO.isExpr() && "getBranchTarget26OpValueMM expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTarget26OpValueMM expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 467, __PRETTY_FUNCTION__))
467 "getBranchTarget26OpValueMM expects only expressions or immediates")((MO.isExpr() && "getBranchTarget26OpValueMM expects only expressions or immediates"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getBranchTarget26OpValueMM expects only expressions or immediates\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 467, __PRETTY_FUNCTION__))
;
468
469 const MCExpr *FixupExpression = MCBinaryExpr::createAdd(
470 MO.getExpr(), MCConstantExpr::create(-4, Ctx), Ctx);
471 Fixups.push_back(MCFixup::create(0, FixupExpression,
472 MCFixupKind(Mips::fixup_MICROMIPS_PC26_S1)));
473 return 0;
474}
475
476/// getJumpOffset16OpValue - Return binary encoding of the jump
477/// target operand. If the machine operand requires relocation,
478/// record the relocation and return zero.
479unsigned MipsMCCodeEmitter::
480getJumpOffset16OpValue(const MCInst &MI, unsigned OpNo,
481 SmallVectorImpl<MCFixup> &Fixups,
482 const MCSubtargetInfo &STI) const {
483 const MCOperand &MO = MI.getOperand(OpNo);
484
485 if (MO.isImm()) return MO.getImm();
486
487 assert(MO.isExpr() &&((MO.isExpr() && "getJumpOffset16OpValue expects only expressions or an immediate"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getJumpOffset16OpValue expects only expressions or an immediate\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 488, __PRETTY_FUNCTION__))
488 "getJumpOffset16OpValue expects only expressions or an immediate")((MO.isExpr() && "getJumpOffset16OpValue expects only expressions or an immediate"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getJumpOffset16OpValue expects only expressions or an immediate\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 488, __PRETTY_FUNCTION__))
;
489
490 // TODO: Push fixup.
491 return 0;
492}
493
494/// getJumpTargetOpValue - Return binary encoding of the jump
495/// target operand. If the machine operand requires relocation,
496/// record the relocation and return zero.
497unsigned MipsMCCodeEmitter::
498getJumpTargetOpValue(const MCInst &MI, unsigned OpNo,
499 SmallVectorImpl<MCFixup> &Fixups,
500 const MCSubtargetInfo &STI) const {
501 const MCOperand &MO = MI.getOperand(OpNo);
502 // If the destination is an immediate, divide by 4.
503 if (MO.isImm()) return MO.getImm()>>2;
504
505 assert(MO.isExpr() &&((MO.isExpr() && "getJumpTargetOpValue expects only expressions or an immediate"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getJumpTargetOpValue expects only expressions or an immediate\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 506, __PRETTY_FUNCTION__))
506 "getJumpTargetOpValue expects only expressions or an immediate")((MO.isExpr() && "getJumpTargetOpValue expects only expressions or an immediate"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getJumpTargetOpValue expects only expressions or an immediate\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 506, __PRETTY_FUNCTION__))
;
507
508 const MCExpr *Expr = MO.getExpr();
509 Fixups.push_back(MCFixup::create(0, Expr,
510 MCFixupKind(Mips::fixup_Mips_26)));
511 return 0;
512}
513
514unsigned MipsMCCodeEmitter::
515getJumpTargetOpValueMM(const MCInst &MI, unsigned OpNo,
516 SmallVectorImpl<MCFixup> &Fixups,
517 const MCSubtargetInfo &STI) const {
518 const MCOperand &MO = MI.getOperand(OpNo);
519 // If the destination is an immediate, divide by 2.
520 if (MO.isImm()) return MO.getImm() >> 1;
521
522 assert(MO.isExpr() &&((MO.isExpr() && "getJumpTargetOpValueMM expects only expressions or an immediate"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getJumpTargetOpValueMM expects only expressions or an immediate\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 523, __PRETTY_FUNCTION__))
523 "getJumpTargetOpValueMM expects only expressions or an immediate")((MO.isExpr() && "getJumpTargetOpValueMM expects only expressions or an immediate"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getJumpTargetOpValueMM expects only expressions or an immediate\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 523, __PRETTY_FUNCTION__))
;
524
525 const MCExpr *Expr = MO.getExpr();
526 Fixups.push_back(MCFixup::create(0, Expr,
527 MCFixupKind(Mips::fixup_MICROMIPS_26_S1)));
528 return 0;
529}
530
531unsigned MipsMCCodeEmitter::
532getUImm5Lsl2Encoding(const MCInst &MI, unsigned OpNo,
533 SmallVectorImpl<MCFixup> &Fixups,
534 const MCSubtargetInfo &STI) const {
535 const MCOperand &MO = MI.getOperand(OpNo);
536 if (MO.isImm()) {
537 // The immediate is encoded as 'immediate << 2'.
538 unsigned Res = getMachineOpValue(MI, MO, Fixups, STI);
539 assert((Res & 3) == 0)(((Res & 3) == 0) ? static_cast<void> (0) : __assert_fail
("(Res & 3) == 0", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 539, __PRETTY_FUNCTION__))
;
540 return Res >> 2;
541 }
542
543 assert(MO.isExpr() &&((MO.isExpr() && "getUImm5Lsl2Encoding expects only expressions or an immediate"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getUImm5Lsl2Encoding expects only expressions or an immediate\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 544, __PRETTY_FUNCTION__))
544 "getUImm5Lsl2Encoding expects only expressions or an immediate")((MO.isExpr() && "getUImm5Lsl2Encoding expects only expressions or an immediate"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getUImm5Lsl2Encoding expects only expressions or an immediate\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 544, __PRETTY_FUNCTION__))
;
545
546 return 0;
547}
548
549unsigned MipsMCCodeEmitter::
550getSImm3Lsa2Value(const MCInst &MI, unsigned OpNo,
551 SmallVectorImpl<MCFixup> &Fixups,
552 const MCSubtargetInfo &STI) const {
553 const MCOperand &MO = MI.getOperand(OpNo);
554 if (MO.isImm()) {
555 int Value = MO.getImm();
556 return Value >> 2;
557 }
558
559 return 0;
560}
561
562unsigned MipsMCCodeEmitter::
563getUImm6Lsl2Encoding(const MCInst &MI, unsigned OpNo,
564 SmallVectorImpl<MCFixup> &Fixups,
565 const MCSubtargetInfo &STI) const {
566 const MCOperand &MO = MI.getOperand(OpNo);
567 if (MO.isImm()) {
568 unsigned Value = MO.getImm();
569 return Value >> 2;
570 }
571
572 return 0;
573}
574
575unsigned MipsMCCodeEmitter::
576getSImm9AddiuspValue(const MCInst &MI, unsigned OpNo,
577 SmallVectorImpl<MCFixup> &Fixups,
578 const MCSubtargetInfo &STI) const {
579 const MCOperand &MO = MI.getOperand(OpNo);
580 if (MO.isImm()) {
581 unsigned Binary = (MO.getImm() >> 2) & 0x0000ffff;
582 return (((Binary & 0x8000) >> 7) | (Binary & 0x00ff));
583 }
584
585 return 0;
586}
587
588unsigned MipsMCCodeEmitter::
589getExprOpValue(const MCExpr *Expr, SmallVectorImpl<MCFixup> &Fixups,
590 const MCSubtargetInfo &STI) const {
591 int64_t Res;
592
593 if (Expr->evaluateAsAbsolute(Res))
594 return Res;
595
596 MCExpr::ExprKind Kind = Expr->getKind();
597 if (Kind == MCExpr::Constant) {
598 return cast<MCConstantExpr>(Expr)->getValue();
599 }
600
601 if (Kind == MCExpr::Binary) {
602 unsigned Res = getExprOpValue(cast<MCBinaryExpr>(Expr)->getLHS(), Fixups, STI);
603 Res += getExprOpValue(cast<MCBinaryExpr>(Expr)->getRHS(), Fixups, STI);
604 return Res;
605 }
606
607 if (Kind == MCExpr::Target) {
608 const MipsMCExpr *MipsExpr = cast<MipsMCExpr>(Expr);
609
610 Mips::Fixups FixupKind = Mips::Fixups(0);
611 switch (MipsExpr->getKind()) {
612 case MipsMCExpr::MEK_None:
613 case MipsMCExpr::MEK_Special:
614 llvm_unreachable("Unhandled fixup kind!")::llvm::llvm_unreachable_internal("Unhandled fixup kind!", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 614)
;
615 break;
616 case MipsMCExpr::MEK_CALL_HI16:
617 FixupKind = Mips::fixup_Mips_CALL_HI16;
618 break;
619 case MipsMCExpr::MEK_CALL_LO16:
620 FixupKind = Mips::fixup_Mips_CALL_LO16;
621 break;
622 case MipsMCExpr::MEK_DTPREL_HI:
623 FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_TLS_DTPREL_HI16
624 : Mips::fixup_Mips_DTPREL_HI;
625 break;
626 case MipsMCExpr::MEK_DTPREL_LO:
627 FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_TLS_DTPREL_LO16
628 : Mips::fixup_Mips_DTPREL_LO;
629 break;
630 case MipsMCExpr::MEK_GOTTPREL:
631 FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_GOTTPREL
632 : Mips::fixup_Mips_GOTTPREL;
633 break;
634 case MipsMCExpr::MEK_GOT:
635 FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_GOT16
636 : Mips::fixup_Mips_GOT;
637 break;
638 case MipsMCExpr::MEK_GOT_CALL:
639 FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_CALL16
640 : Mips::fixup_Mips_CALL16;
641 break;
642 case MipsMCExpr::MEK_GOT_DISP:
643 FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_GOT_DISP
644 : Mips::fixup_Mips_GOT_DISP;
645 break;
646 case MipsMCExpr::MEK_GOT_HI16:
647 FixupKind = Mips::fixup_Mips_GOT_HI16;
648 break;
649 case MipsMCExpr::MEK_GOT_LO16:
650 FixupKind = Mips::fixup_Mips_GOT_LO16;
651 break;
652 case MipsMCExpr::MEK_GOT_PAGE:
653 FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_GOT_PAGE
654 : Mips::fixup_Mips_GOT_PAGE;
655 break;
656 case MipsMCExpr::MEK_GOT_OFST:
657 FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_GOT_OFST
658 : Mips::fixup_Mips_GOT_OFST;
659 break;
660 case MipsMCExpr::MEK_GPREL:
661 FixupKind = Mips::fixup_Mips_GPREL16;
662 break;
663 case MipsMCExpr::MEK_LO:
664 // Check for %lo(%neg(%gp_rel(X)))
665 if (MipsExpr->isGpOff())
666 FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_GPOFF_LO
667 : Mips::fixup_Mips_GPOFF_LO;
668 else
669 FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_LO16
670 : Mips::fixup_Mips_LO16;
671 break;
672 case MipsMCExpr::MEK_HIGHEST:
673 FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_HIGHEST
674 : Mips::fixup_Mips_HIGHEST;
675 break;
676 case MipsMCExpr::MEK_HIGHER:
677 FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_HIGHER
678 : Mips::fixup_Mips_HIGHER;
679 break;
680 case MipsMCExpr::MEK_HI:
681 // Check for %hi(%neg(%gp_rel(X)))
682 if (MipsExpr->isGpOff())
683 FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_GPOFF_HI
684 : Mips::fixup_Mips_GPOFF_HI;
685 else
686 FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_HI16
687 : Mips::fixup_Mips_HI16;
688 break;
689 case MipsMCExpr::MEK_PCREL_HI16:
690 FixupKind = Mips::fixup_MIPS_PCHI16;
691 break;
692 case MipsMCExpr::MEK_PCREL_LO16:
693 FixupKind = Mips::fixup_MIPS_PCLO16;
694 break;
695 case MipsMCExpr::MEK_TLSGD:
696 FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_TLS_GD
697 : Mips::fixup_Mips_TLSGD;
698 break;
699 case MipsMCExpr::MEK_TLSLDM:
700 FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_TLS_LDM
701 : Mips::fixup_Mips_TLSLDM;
702 break;
703 case MipsMCExpr::MEK_TPREL_HI:
704 FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_TLS_TPREL_HI16
705 : Mips::fixup_Mips_TPREL_HI;
706 break;
707 case MipsMCExpr::MEK_TPREL_LO:
708 FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_TLS_TPREL_LO16
709 : Mips::fixup_Mips_TPREL_LO;
710 break;
711 case MipsMCExpr::MEK_NEG:
712 FixupKind =
713 isMicroMips(STI) ? Mips::fixup_MICROMIPS_SUB : Mips::fixup_Mips_SUB;
714 break;
715 }
716 Fixups.push_back(MCFixup::create(0, MipsExpr, MCFixupKind(FixupKind)));
717 return 0;
718 }
719
720 if (Kind == MCExpr::SymbolRef) {
721 Mips::Fixups FixupKind = Mips::Fixups(0);
722
723 switch(cast<MCSymbolRefExpr>(Expr)->getKind()) {
724 default: llvm_unreachable("Unknown fixup kind!")::llvm::llvm_unreachable_internal("Unknown fixup kind!", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 724)
;
725 break;
726 case MCSymbolRefExpr::VK_None:
727 FixupKind = Mips::fixup_Mips_32; // FIXME: This is ok for O32/N32 but not N64.
728 break;
729 } // switch
730
731 Fixups.push_back(MCFixup::create(0, Expr, MCFixupKind(FixupKind)));
732 return 0;
733 }
734 return 0;
735}
736
737/// getMachineOpValue - Return binary encoding of operand. If the machine
738/// operand requires relocation, record the relocation and return zero.
739unsigned MipsMCCodeEmitter::
740getMachineOpValue(const MCInst &MI, const MCOperand &MO,
741 SmallVectorImpl<MCFixup> &Fixups,
742 const MCSubtargetInfo &STI) const {
743 if (MO.isReg()) {
744 unsigned Reg = MO.getReg();
745 unsigned RegNo = Ctx.getRegisterInfo()->getEncodingValue(Reg);
746 return RegNo;
747 } else if (MO.isImm()) {
748 return static_cast<unsigned>(MO.getImm());
749 } else if (MO.isFPImm()) {
750 return static_cast<unsigned>(APFloat(MO.getFPImm())
751 .bitcastToAPInt().getHiBits(32).getLimitedValue());
752 }
753 // MO must be an Expr.
754 assert(MO.isExpr())((MO.isExpr()) ? static_cast<void> (0) : __assert_fail (
"MO.isExpr()", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 754, __PRETTY_FUNCTION__))
;
755 return getExprOpValue(MO.getExpr(),Fixups, STI);
756}
757
758/// Return binary encoding of memory related operand.
759/// If the offset operand requires relocation, record the relocation.
760template <unsigned ShiftAmount>
761unsigned MipsMCCodeEmitter::getMemEncoding(const MCInst &MI, unsigned OpNo,
762 SmallVectorImpl<MCFixup> &Fixups,
763 const MCSubtargetInfo &STI) const {
764 // Base register is encoded in bits 20-16, offset is encoded in bits 15-0.
765 assert(MI.getOperand(OpNo).isReg())((MI.getOperand(OpNo).isReg()) ? static_cast<void> (0) :
__assert_fail ("MI.getOperand(OpNo).isReg()", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 765, __PRETTY_FUNCTION__))
;
766 unsigned RegBits = getMachineOpValue(MI, MI.getOperand(OpNo),Fixups, STI) << 16;
767 unsigned OffBits = getMachineOpValue(MI, MI.getOperand(OpNo+1), Fixups, STI);
768
769 // Apply the scale factor if there is one.
770 OffBits >>= ShiftAmount;
771
772 return (OffBits & 0xFFFF) | RegBits;
773}
774
775unsigned MipsMCCodeEmitter::
776getMemEncodingMMImm4(const MCInst &MI, unsigned OpNo,
777 SmallVectorImpl<MCFixup> &Fixups,
778 const MCSubtargetInfo &STI) const {
779 // Base register is encoded in bits 6-4, offset is encoded in bits 3-0.
780 assert(MI.getOperand(OpNo).isReg())((MI.getOperand(OpNo).isReg()) ? static_cast<void> (0) :
__assert_fail ("MI.getOperand(OpNo).isReg()", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 780, __PRETTY_FUNCTION__))
;
781 unsigned RegBits = getMachineOpValue(MI, MI.getOperand(OpNo),
782 Fixups, STI) << 4;
783 unsigned OffBits = getMachineOpValue(MI, MI.getOperand(OpNo+1),
784 Fixups, STI);
785
786 return (OffBits & 0xF) | RegBits;
787}
788
789unsigned MipsMCCodeEmitter::
790getMemEncodingMMImm4Lsl1(const MCInst &MI, unsigned OpNo,
791 SmallVectorImpl<MCFixup> &Fixups,
792 const MCSubtargetInfo &STI) const {
793 // Base register is encoded in bits 6-4, offset is encoded in bits 3-0.
794 assert(MI.getOperand(OpNo).isReg())((MI.getOperand(OpNo).isReg()) ? static_cast<void> (0) :
__assert_fail ("MI.getOperand(OpNo).isReg()", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 794, __PRETTY_FUNCTION__))
;
795 unsigned RegBits = getMachineOpValue(MI, MI.getOperand(OpNo),
796 Fixups, STI) << 4;
797 unsigned OffBits = getMachineOpValue(MI, MI.getOperand(OpNo+1),
798 Fixups, STI) >> 1;
799
800 return (OffBits & 0xF) | RegBits;
801}
802
803unsigned MipsMCCodeEmitter::
804getMemEncodingMMImm4Lsl2(const MCInst &MI, unsigned OpNo,
805 SmallVectorImpl<MCFixup> &Fixups,
806 const MCSubtargetInfo &STI) const {
807 // Base register is encoded in bits 6-4, offset is encoded in bits 3-0.
808 assert(MI.getOperand(OpNo).isReg())((MI.getOperand(OpNo).isReg()) ? static_cast<void> (0) :
__assert_fail ("MI.getOperand(OpNo).isReg()", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 808, __PRETTY_FUNCTION__))
;
809 unsigned RegBits = getMachineOpValue(MI, MI.getOperand(OpNo),
810 Fixups, STI) << 4;
811 unsigned OffBits = getMachineOpValue(MI, MI.getOperand(OpNo+1),
812 Fixups, STI) >> 2;
813
814 return (OffBits & 0xF) | RegBits;
815}
816
817unsigned MipsMCCodeEmitter::
818getMemEncodingMMSPImm5Lsl2(const MCInst &MI, unsigned OpNo,
819 SmallVectorImpl<MCFixup> &Fixups,
820 const MCSubtargetInfo &STI) const {
821 // Register is encoded in bits 9-5, offset is encoded in bits 4-0.
822 assert(MI.getOperand(OpNo).isReg() &&((MI.getOperand(OpNo).isReg() && (MI.getOperand(OpNo)
.getReg() == Mips::SP || MI.getOperand(OpNo).getReg() == Mips
::SP_64) && "Unexpected base register!") ? static_cast
<void> (0) : __assert_fail ("MI.getOperand(OpNo).isReg() && (MI.getOperand(OpNo).getReg() == Mips::SP || MI.getOperand(OpNo).getReg() == Mips::SP_64) && \"Unexpected base register!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 825, __PRETTY_FUNCTION__))
823 (MI.getOperand(OpNo).getReg() == Mips::SP ||((MI.getOperand(OpNo).isReg() && (MI.getOperand(OpNo)
.getReg() == Mips::SP || MI.getOperand(OpNo).getReg() == Mips
::SP_64) && "Unexpected base register!") ? static_cast
<void> (0) : __assert_fail ("MI.getOperand(OpNo).isReg() && (MI.getOperand(OpNo).getReg() == Mips::SP || MI.getOperand(OpNo).getReg() == Mips::SP_64) && \"Unexpected base register!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 825, __PRETTY_FUNCTION__))
824 MI.getOperand(OpNo).getReg() == Mips::SP_64) &&((MI.getOperand(OpNo).isReg() && (MI.getOperand(OpNo)
.getReg() == Mips::SP || MI.getOperand(OpNo).getReg() == Mips
::SP_64) && "Unexpected base register!") ? static_cast
<void> (0) : __assert_fail ("MI.getOperand(OpNo).isReg() && (MI.getOperand(OpNo).getReg() == Mips::SP || MI.getOperand(OpNo).getReg() == Mips::SP_64) && \"Unexpected base register!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 825, __PRETTY_FUNCTION__))
825 "Unexpected base register!")((MI.getOperand(OpNo).isReg() && (MI.getOperand(OpNo)
.getReg() == Mips::SP || MI.getOperand(OpNo).getReg() == Mips
::SP_64) && "Unexpected base register!") ? static_cast
<void> (0) : __assert_fail ("MI.getOperand(OpNo).isReg() && (MI.getOperand(OpNo).getReg() == Mips::SP || MI.getOperand(OpNo).getReg() == Mips::SP_64) && \"Unexpected base register!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 825, __PRETTY_FUNCTION__))
;
826 unsigned OffBits = getMachineOpValue(MI, MI.getOperand(OpNo+1),
827 Fixups, STI) >> 2;
828
829 return OffBits & 0x1F;
830}
831
832unsigned MipsMCCodeEmitter::
833getMemEncodingMMGPImm7Lsl2(const MCInst &MI, unsigned OpNo,
834 SmallVectorImpl<MCFixup> &Fixups,
835 const MCSubtargetInfo &STI) const {
836 // Register is encoded in bits 9-7, offset is encoded in bits 6-0.
837 assert(MI.getOperand(OpNo).isReg() &&((MI.getOperand(OpNo).isReg() && MI.getOperand(OpNo).
getReg() == Mips::GP && "Unexpected base register!") ?
static_cast<void> (0) : __assert_fail ("MI.getOperand(OpNo).isReg() && MI.getOperand(OpNo).getReg() == Mips::GP && \"Unexpected base register!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 839, __PRETTY_FUNCTION__))
838 MI.getOperand(OpNo).getReg() == Mips::GP &&((MI.getOperand(OpNo).isReg() && MI.getOperand(OpNo).
getReg() == Mips::GP && "Unexpected base register!") ?
static_cast<void> (0) : __assert_fail ("MI.getOperand(OpNo).isReg() && MI.getOperand(OpNo).getReg() == Mips::GP && \"Unexpected base register!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 839, __PRETTY_FUNCTION__))
839 "Unexpected base register!")((MI.getOperand(OpNo).isReg() && MI.getOperand(OpNo).
getReg() == Mips::GP && "Unexpected base register!") ?
static_cast<void> (0) : __assert_fail ("MI.getOperand(OpNo).isReg() && MI.getOperand(OpNo).getReg() == Mips::GP && \"Unexpected base register!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 839, __PRETTY_FUNCTION__))
;
840
841 unsigned OffBits = getMachineOpValue(MI, MI.getOperand(OpNo+1),
842 Fixups, STI) >> 2;
843
844 return OffBits & 0x7F;
845}
846
847unsigned MipsMCCodeEmitter::
848getMemEncodingMMImm9(const MCInst &MI, unsigned OpNo,
849 SmallVectorImpl<MCFixup> &Fixups,
850 const MCSubtargetInfo &STI) const {
851 // Base register is encoded in bits 20-16, offset is encoded in bits 8-0.
852 assert(MI.getOperand(OpNo).isReg())((MI.getOperand(OpNo).isReg()) ? static_cast<void> (0) :
__assert_fail ("MI.getOperand(OpNo).isReg()", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 852, __PRETTY_FUNCTION__))
;
853 unsigned RegBits = getMachineOpValue(MI, MI.getOperand(OpNo), Fixups,
854 STI) << 16;
855 unsigned OffBits = getMachineOpValue(MI, MI.getOperand(OpNo + 1), Fixups, STI);
856
857 return (OffBits & 0x1FF) | RegBits;
858}
859
860unsigned MipsMCCodeEmitter::
861getMemEncodingMMImm11(const MCInst &MI, unsigned OpNo,
862 SmallVectorImpl<MCFixup> &Fixups,
863 const MCSubtargetInfo &STI) const {
864 // Base register is encoded in bits 20-16, offset is encoded in bits 10-0.
865 assert(MI.getOperand(OpNo).isReg())((MI.getOperand(OpNo).isReg()) ? static_cast<void> (0) :
__assert_fail ("MI.getOperand(OpNo).isReg()", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 865, __PRETTY_FUNCTION__))
;
866 unsigned RegBits = getMachineOpValue(MI, MI.getOperand(OpNo), Fixups,
867 STI) << 16;
868 unsigned OffBits = getMachineOpValue(MI, MI.getOperand(OpNo+1), Fixups, STI);
869
870 return (OffBits & 0x07FF) | RegBits;
871}
872
873unsigned MipsMCCodeEmitter::
874getMemEncodingMMImm12(const MCInst &MI, unsigned OpNo,
875 SmallVectorImpl<MCFixup> &Fixups,
876 const MCSubtargetInfo &STI) const {
877 // opNum can be invalid if instruction had reglist as operand.
878 // MemOperand is always last operand of instruction (base + offset).
879 switch (MI.getOpcode()) {
880 default:
881 break;
882 case Mips::SWM32_MM:
883 case Mips::LWM32_MM:
884 OpNo = MI.getNumOperands() - 2;
885 break;
886 }
887
888 // Base register is encoded in bits 20-16, offset is encoded in bits 11-0.
889 assert(MI.getOperand(OpNo).isReg())((MI.getOperand(OpNo).isReg()) ? static_cast<void> (0) :
__assert_fail ("MI.getOperand(OpNo).isReg()", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 889, __PRETTY_FUNCTION__))
;
890 unsigned RegBits = getMachineOpValue(MI, MI.getOperand(OpNo), Fixups, STI) << 16;
891 unsigned OffBits = getMachineOpValue(MI, MI.getOperand(OpNo+1), Fixups, STI);
892
893 return (OffBits & 0x0FFF) | RegBits;
894}
895
896unsigned MipsMCCodeEmitter::
897getMemEncodingMMImm16(const MCInst &MI, unsigned OpNo,
898 SmallVectorImpl<MCFixup> &Fixups,
899 const MCSubtargetInfo &STI) const {
900 // Base register is encoded in bits 20-16, offset is encoded in bits 15-0.
901 assert(MI.getOperand(OpNo).isReg())((MI.getOperand(OpNo).isReg()) ? static_cast<void> (0) :
__assert_fail ("MI.getOperand(OpNo).isReg()", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 901, __PRETTY_FUNCTION__))
;
902 unsigned RegBits = getMachineOpValue(MI, MI.getOperand(OpNo), Fixups,
903 STI) << 16;
904 unsigned OffBits = getMachineOpValue(MI, MI.getOperand(OpNo+1), Fixups, STI);
905
906 return (OffBits & 0xFFFF) | RegBits;
907}
908
909unsigned MipsMCCodeEmitter::
910getMemEncodingMMImm4sp(const MCInst &MI, unsigned OpNo,
911 SmallVectorImpl<MCFixup> &Fixups,
912 const MCSubtargetInfo &STI) const {
913 // opNum can be invalid if instruction had reglist as operand
914 // MemOperand is always last operand of instruction (base + offset)
915 switch (MI.getOpcode()) {
916 default:
917 break;
918 case Mips::SWM16_MM:
919 case Mips::SWM16_MMR6:
920 case Mips::LWM16_MM:
921 case Mips::LWM16_MMR6:
922 OpNo = MI.getNumOperands() - 2;
923 break;
924 }
925
926 // Offset is encoded in bits 4-0.
927 assert(MI.getOperand(OpNo).isReg())((MI.getOperand(OpNo).isReg()) ? static_cast<void> (0) :
__assert_fail ("MI.getOperand(OpNo).isReg()", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 927, __PRETTY_FUNCTION__))
;
928 // Base register is always SP - thus it is not encoded.
929 assert(MI.getOperand(OpNo+1).isImm())((MI.getOperand(OpNo+1).isImm()) ? static_cast<void> (0
) : __assert_fail ("MI.getOperand(OpNo+1).isImm()", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 929, __PRETTY_FUNCTION__))
;
930 unsigned OffBits = getMachineOpValue(MI, MI.getOperand(OpNo+1), Fixups, STI);
931
932 return ((OffBits >> 2) & 0x0F);
933}
934
935// FIXME: should be called getMSBEncoding
936//
937unsigned
938MipsMCCodeEmitter::getSizeInsEncoding(const MCInst &MI, unsigned OpNo,
939 SmallVectorImpl<MCFixup> &Fixups,
940 const MCSubtargetInfo &STI) const {
941 assert(MI.getOperand(OpNo-1).isImm())((MI.getOperand(OpNo-1).isImm()) ? static_cast<void> (0
) : __assert_fail ("MI.getOperand(OpNo-1).isImm()", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 941, __PRETTY_FUNCTION__))
;
942 assert(MI.getOperand(OpNo).isImm())((MI.getOperand(OpNo).isImm()) ? static_cast<void> (0) :
__assert_fail ("MI.getOperand(OpNo).isImm()", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 942, __PRETTY_FUNCTION__))
;
943 unsigned Position = getMachineOpValue(MI, MI.getOperand(OpNo-1), Fixups, STI);
944 unsigned Size = getMachineOpValue(MI, MI.getOperand(OpNo), Fixups, STI);
945
946 return Position + Size - 1;
947}
948
949template <unsigned Bits, int Offset>
950unsigned
951MipsMCCodeEmitter::getUImmWithOffsetEncoding(const MCInst &MI, unsigned OpNo,
952 SmallVectorImpl<MCFixup> &Fixups,
953 const MCSubtargetInfo &STI) const {
954 assert(MI.getOperand(OpNo).isImm())((MI.getOperand(OpNo).isImm()) ? static_cast<void> (0) :
__assert_fail ("MI.getOperand(OpNo).isImm()", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 954, __PRETTY_FUNCTION__))
;
955 unsigned Value = getMachineOpValue(MI, MI.getOperand(OpNo), Fixups, STI);
956 Value -= Offset;
957 return Value;
958}
959
960unsigned
961MipsMCCodeEmitter::getSimm19Lsl2Encoding(const MCInst &MI, unsigned OpNo,
962 SmallVectorImpl<MCFixup> &Fixups,
963 const MCSubtargetInfo &STI) const {
964 const MCOperand &MO = MI.getOperand(OpNo);
965 if (MO.isImm()) {
966 // The immediate is encoded as 'immediate << 2'.
967 unsigned Res = getMachineOpValue(MI, MO, Fixups, STI);
968 assert((Res & 3) == 0)(((Res & 3) == 0) ? static_cast<void> (0) : __assert_fail
("(Res & 3) == 0", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 968, __PRETTY_FUNCTION__))
;
969 return Res >> 2;
970 }
971
972 assert(MO.isExpr() &&((MO.isExpr() && "getSimm19Lsl2Encoding expects only expressions or an immediate"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getSimm19Lsl2Encoding expects only expressions or an immediate\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 973, __PRETTY_FUNCTION__))
973 "getSimm19Lsl2Encoding expects only expressions or an immediate")((MO.isExpr() && "getSimm19Lsl2Encoding expects only expressions or an immediate"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getSimm19Lsl2Encoding expects only expressions or an immediate\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 973, __PRETTY_FUNCTION__))
;
974
975 const MCExpr *Expr = MO.getExpr();
976 Mips::Fixups FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_PC19_S2
977 : Mips::fixup_MIPS_PC19_S2;
978 Fixups.push_back(MCFixup::create(0, Expr, MCFixupKind(FixupKind)));
979 return 0;
980}
981
982unsigned
983MipsMCCodeEmitter::getSimm18Lsl3Encoding(const MCInst &MI, unsigned OpNo,
984 SmallVectorImpl<MCFixup> &Fixups,
985 const MCSubtargetInfo &STI) const {
986 const MCOperand &MO = MI.getOperand(OpNo);
987 if (MO.isImm()) {
988 // The immediate is encoded as 'immediate << 3'.
989 unsigned Res = getMachineOpValue(MI, MI.getOperand(OpNo), Fixups, STI);
990 assert((Res & 7) == 0)(((Res & 7) == 0) ? static_cast<void> (0) : __assert_fail
("(Res & 7) == 0", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 990, __PRETTY_FUNCTION__))
;
991 return Res >> 3;
992 }
993
994 assert(MO.isExpr() &&((MO.isExpr() && "getSimm18Lsl2Encoding expects only expressions or an immediate"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getSimm18Lsl2Encoding expects only expressions or an immediate\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 995, __PRETTY_FUNCTION__))
995 "getSimm18Lsl2Encoding expects only expressions or an immediate")((MO.isExpr() && "getSimm18Lsl2Encoding expects only expressions or an immediate"
) ? static_cast<void> (0) : __assert_fail ("MO.isExpr() && \"getSimm18Lsl2Encoding expects only expressions or an immediate\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 995, __PRETTY_FUNCTION__))
;
996
997 const MCExpr *Expr = MO.getExpr();
998 Mips::Fixups FixupKind = isMicroMips(STI) ? Mips::fixup_MICROMIPS_PC18_S3
999 : Mips::fixup_MIPS_PC18_S3;
1000 Fixups.push_back(MCFixup::create(0, Expr, MCFixupKind(FixupKind)));
1001 return 0;
1002}
1003
1004unsigned
1005MipsMCCodeEmitter::getUImm3Mod8Encoding(const MCInst &MI, unsigned OpNo,
1006 SmallVectorImpl<MCFixup> &Fixups,
1007 const MCSubtargetInfo &STI) const {
1008 assert(MI.getOperand(OpNo).isImm())((MI.getOperand(OpNo).isImm()) ? static_cast<void> (0) :
__assert_fail ("MI.getOperand(OpNo).isImm()", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 1008, __PRETTY_FUNCTION__))
;
1009 const MCOperand &MO = MI.getOperand(OpNo);
1010 return MO.getImm() % 8;
1011}
1012
1013unsigned
1014MipsMCCodeEmitter::getUImm4AndValue(const MCInst &MI, unsigned OpNo,
1015 SmallVectorImpl<MCFixup> &Fixups,
1016 const MCSubtargetInfo &STI) const {
1017 assert(MI.getOperand(OpNo).isImm())((MI.getOperand(OpNo).isImm()) ? static_cast<void> (0) :
__assert_fail ("MI.getOperand(OpNo).isImm()", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 1017, __PRETTY_FUNCTION__))
;
1018 const MCOperand &MO = MI.getOperand(OpNo);
1019 unsigned Value = MO.getImm();
1020 switch (Value) {
1021 case 128: return 0x0;
1022 case 1: return 0x1;
1023 case 2: return 0x2;
1024 case 3: return 0x3;
1025 case 4: return 0x4;
1026 case 7: return 0x5;
1027 case 8: return 0x6;
1028 case 15: return 0x7;
1029 case 16: return 0x8;
1030 case 31: return 0x9;
1031 case 32: return 0xa;
1032 case 63: return 0xb;
1033 case 64: return 0xc;
1034 case 255: return 0xd;
1035 case 32768: return 0xe;
1036 case 65535: return 0xf;
1037 }
1038 llvm_unreachable("Unexpected value")::llvm::llvm_unreachable_internal("Unexpected value", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 1038)
;
1039}
1040
1041unsigned
1042MipsMCCodeEmitter::getRegisterListOpValue(const MCInst &MI, unsigned OpNo,
1043 SmallVectorImpl<MCFixup> &Fixups,
1044 const MCSubtargetInfo &STI) const {
1045 unsigned res = 0;
1046
1047 // Register list operand is always first operand of instruction and it is
1048 // placed before memory operand (register + imm).
1049
1050 for (unsigned I = OpNo, E = MI.getNumOperands() - 2; I < E; ++I) {
1051 unsigned Reg = MI.getOperand(I).getReg();
1052 unsigned RegNo = Ctx.getRegisterInfo()->getEncodingValue(Reg);
1053 if (RegNo != 31)
1054 res++;
1055 else
1056 res |= 0x10;
1057 }
1058 return res;
1059}
1060
1061unsigned
1062MipsMCCodeEmitter::getRegisterListOpValue16(const MCInst &MI, unsigned OpNo,
1063 SmallVectorImpl<MCFixup> &Fixups,
1064 const MCSubtargetInfo &STI) const {
1065 return (MI.getNumOperands() - 4);
1066}
1067
1068unsigned
1069MipsMCCodeEmitter::getMovePRegPairOpValue(const MCInst &MI, unsigned OpNo,
1070 SmallVectorImpl<MCFixup> &Fixups,
1071 const MCSubtargetInfo &STI) const {
1072 unsigned res = 0;
1073
1074 if (MI.getOperand(0).getReg() == Mips::A1 &&
1075 MI.getOperand(1).getReg() == Mips::A2)
1076 res = 0;
1077 else if (MI.getOperand(0).getReg() == Mips::A1 &&
1078 MI.getOperand(1).getReg() == Mips::A3)
1079 res = 1;
1080 else if (MI.getOperand(0).getReg() == Mips::A2 &&
1081 MI.getOperand(1).getReg() == Mips::A3)
1082 res = 2;
1083 else if (MI.getOperand(0).getReg() == Mips::A0 &&
1084 MI.getOperand(1).getReg() == Mips::S5)
1085 res = 3;
1086 else if (MI.getOperand(0).getReg() == Mips::A0 &&
1087 MI.getOperand(1).getReg() == Mips::S6)
1088 res = 4;
1089 else if (MI.getOperand(0).getReg() == Mips::A0 &&
1090 MI.getOperand(1).getReg() == Mips::A1)
1091 res = 5;
1092 else if (MI.getOperand(0).getReg() == Mips::A0 &&
1093 MI.getOperand(1).getReg() == Mips::A2)
1094 res = 6;
1095 else if (MI.getOperand(0).getReg() == Mips::A0 &&
1096 MI.getOperand(1).getReg() == Mips::A3)
1097 res = 7;
1098
1099 return res;
1100}
1101
1102unsigned
1103MipsMCCodeEmitter::getMovePRegSingleOpValue(const MCInst &MI, unsigned OpNo,
1104 SmallVectorImpl<MCFixup> &Fixups,
1105 const MCSubtargetInfo &STI) const {
1106 assert(((OpNo == 2) || (OpNo == 3)) &&((((OpNo == 2) || (OpNo == 3)) && "Unexpected OpNo for movep operand encoding!"
) ? static_cast<void> (0) : __assert_fail ("((OpNo == 2) || (OpNo == 3)) && \"Unexpected OpNo for movep operand encoding!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 1107, __PRETTY_FUNCTION__))
1107 "Unexpected OpNo for movep operand encoding!")((((OpNo == 2) || (OpNo == 3)) && "Unexpected OpNo for movep operand encoding!"
) ? static_cast<void> (0) : __assert_fail ("((OpNo == 2) || (OpNo == 3)) && \"Unexpected OpNo for movep operand encoding!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 1107, __PRETTY_FUNCTION__))
;
1108
1109 MCOperand Op = MI.getOperand(OpNo);
1110 assert(Op.isReg() && "Operand of movep is not a register!")((Op.isReg() && "Operand of movep is not a register!"
) ? static_cast<void> (0) : __assert_fail ("Op.isReg() && \"Operand of movep is not a register!\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 1110, __PRETTY_FUNCTION__))
;
1111 switch (Op.getReg()) {
1112 default:
1113 llvm_unreachable("Unknown register for movep!")::llvm::llvm_unreachable_internal("Unknown register for movep!"
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 1113)
;
1114 case Mips::ZERO: return 0;
1115 case Mips::S1: return 1;
1116 case Mips::V0: return 2;
1117 case Mips::V1: return 3;
1118 case Mips::S0: return 4;
1119 case Mips::S2: return 5;
1120 case Mips::S3: return 6;
1121 case Mips::S4: return 7;
1122 }
1123}
1124
1125unsigned
1126MipsMCCodeEmitter::getSimm23Lsl2Encoding(const MCInst &MI, unsigned OpNo,
1127 SmallVectorImpl<MCFixup> &Fixups,
1128 const MCSubtargetInfo &STI) const {
1129 const MCOperand &MO = MI.getOperand(OpNo);
1130 assert(MO.isImm() && "getSimm23Lsl2Encoding expects only an immediate")((MO.isImm() && "getSimm23Lsl2Encoding expects only an immediate"
) ? static_cast<void> (0) : __assert_fail ("MO.isImm() && \"getSimm23Lsl2Encoding expects only an immediate\""
, "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 1130, __PRETTY_FUNCTION__))
;
1131 // The immediate is encoded as 'immediate >> 2'.
1132 unsigned Res = static_cast<unsigned>(MO.getImm());
1133 assert((Res & 3) == 0)(((Res & 3) == 0) ? static_cast<void> (0) : __assert_fail
("(Res & 3) == 0", "/build/llvm-toolchain-snapshot-8~svn345461/lib/Target/Mips/MCTargetDesc/MipsMCCodeEmitter.cpp"
, 1133, __PRETTY_FUNCTION__))
;
1134 return Res >> 2;
1135}
1136
1137#include "MipsGenMCCodeEmitter.inc"