1//===-- LoongArchMCAsmInfo.cpp - LoongArch Asm properties ------*- C++ -*--===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file contains the declarations of the LoongArchMCAsmInfo properties.
10//
11//===----------------------------------------------------------------------===//
12
13#include "LoongArchMCAsmInfo.h"
14#include "llvm/BinaryFormat/Dwarf.h"
15#include "llvm/BinaryFormat/ELF.h"
16#include "llvm/MC/MCContext.h"
17#include "llvm/MC/MCStreamer.h"
18#include "llvm/TargetParser/Triple.h"
19
20using namespace llvm;
21
22const LoongArchMCExpr *LoongArchMCExpr::create(const MCExpr *Expr, uint16_t S,
23 MCContext &Ctx, bool Hint) {
24 return new (Ctx) LoongArchMCExpr(Expr, S, Hint);
25}
26
27static StringRef getLoongArchSpecifierName(uint16_t S) {
28 switch (S) {
29 default:
30 llvm_unreachable("Invalid ELF symbol kind");
31 case ELF::R_LARCH_B16:
32 return "b16";
33 case ELF::R_LARCH_B21:
34 return "b21";
35 case ELF::R_LARCH_ABS_HI20:
36 return "abs_hi20";
37 case ELF::R_LARCH_ABS_LO12:
38 return "abs_lo12";
39 case ELF::R_LARCH_ABS64_LO20:
40 return "abs64_lo20";
41 case ELF::R_LARCH_ABS64_HI12:
42 return "abs64_hi12";
43 case ELF::R_LARCH_PCALA_HI20:
44 return "pc_hi20";
45 case ELF::R_LARCH_PCALA_LO12:
46 return "pc_lo12";
47 case ELF::R_LARCH_PCALA64_LO20:
48 return "pc64_lo20";
49 case ELF::R_LARCH_PCALA64_HI12:
50 return "pc64_hi12";
51 case ELF::R_LARCH_GOT_PC_HI20:
52 return "got_pc_hi20";
53 case ELF::R_LARCH_GOT_PC_LO12:
54 return "got_pc_lo12";
55 case ELF::R_LARCH_GOT64_PC_LO20:
56 return "got64_pc_lo20";
57 case ELF::R_LARCH_GOT64_PC_HI12:
58 return "got64_pc_hi12";
59 case ELF::R_LARCH_GOT_HI20:
60 return "got_hi20";
61 case ELF::R_LARCH_GOT_LO12:
62 return "got_lo12";
63 case ELF::R_LARCH_GOT64_LO20:
64 return "got64_lo20";
65 case ELF::R_LARCH_GOT64_HI12:
66 return "got64_hi12";
67 case ELF::R_LARCH_TLS_LE_HI20:
68 return "le_hi20";
69 case ELF::R_LARCH_TLS_LE_LO12:
70 return "le_lo12";
71 case ELF::R_LARCH_TLS_LE64_LO20:
72 return "le64_lo20";
73 case ELF::R_LARCH_TLS_LE64_HI12:
74 return "le64_hi12";
75 case ELF::R_LARCH_TLS_IE_PC_HI20:
76 return "ie_pc_hi20";
77 case ELF::R_LARCH_TLS_IE_PC_LO12:
78 return "ie_pc_lo12";
79 case ELF::R_LARCH_TLS_IE64_PC_LO20:
80 return "ie64_pc_lo20";
81 case ELF::R_LARCH_TLS_IE64_PC_HI12:
82 return "ie64_pc_hi12";
83 case ELF::R_LARCH_TLS_IE_HI20:
84 return "ie_hi20";
85 case ELF::R_LARCH_TLS_IE_LO12:
86 return "ie_lo12";
87 case ELF::R_LARCH_TLS_IE64_LO20:
88 return "ie64_lo20";
89 case ELF::R_LARCH_TLS_IE64_HI12:
90 return "ie64_hi12";
91 case ELF::R_LARCH_TLS_LD_PC_HI20:
92 return "ld_pc_hi20";
93 case ELF::R_LARCH_TLS_LD_HI20:
94 return "ld_hi20";
95 case ELF::R_LARCH_TLS_GD_PC_HI20:
96 return "gd_pc_hi20";
97 case ELF::R_LARCH_TLS_GD_HI20:
98 return "gd_hi20";
99 case ELF::R_LARCH_CALL36:
100 return "call36";
101 case ELF::R_LARCH_TLS_DESC_PC_HI20:
102 return "desc_pc_hi20";
103 case ELF::R_LARCH_TLS_DESC_PC_LO12:
104 return "desc_pc_lo12";
105 case ELF::R_LARCH_TLS_DESC64_PC_LO20:
106 return "desc64_pc_lo20";
107 case ELF::R_LARCH_TLS_DESC64_PC_HI12:
108 return "desc64_pc_hi12";
109 case ELF::R_LARCH_TLS_DESC_HI20:
110 return "desc_hi20";
111 case ELF::R_LARCH_TLS_DESC_LO12:
112 return "desc_lo12";
113 case ELF::R_LARCH_TLS_DESC64_LO20:
114 return "desc64_lo20";
115 case ELF::R_LARCH_TLS_DESC64_HI12:
116 return "desc64_hi12";
117 case ELF::R_LARCH_TLS_DESC_LD:
118 return "desc_ld";
119 case ELF::R_LARCH_TLS_DESC_CALL:
120 return "desc_call";
121 case ELF::R_LARCH_TLS_LE_HI20_R:
122 return "le_hi20_r";
123 case ELF::R_LARCH_TLS_LE_ADD_R:
124 return "le_add_r";
125 case ELF::R_LARCH_TLS_LE_LO12_R:
126 return "le_lo12_r";
127 case ELF::R_LARCH_PCREL20_S2:
128 return "pcrel_20";
129 case ELF::R_LARCH_TLS_LD_PCREL20_S2:
130 return "ld_pcrel_20";
131 case ELF::R_LARCH_TLS_GD_PCREL20_S2:
132 return "gd_pcrel_20";
133 case ELF::R_LARCH_TLS_DESC_PCREL20_S2:
134 return "desc_pcrel_20";
135 }
136}
137
138LoongArchMCExpr::Specifier LoongArch::parseSpecifier(StringRef name) {
139 return StringSwitch<LoongArchMCExpr::Specifier>(name)
140 .Case(S: "plt", Value: ELF::R_LARCH_B26)
141 .Case(S: "b16", Value: ELF::R_LARCH_B16)
142 .Case(S: "b21", Value: ELF::R_LARCH_B21)
143 .Case(S: "b26", Value: ELF::R_LARCH_B26)
144 .Case(S: "abs_hi20", Value: ELF::R_LARCH_ABS_HI20)
145 .Case(S: "abs_lo12", Value: ELF::R_LARCH_ABS_LO12)
146 .Case(S: "abs64_lo20", Value: ELF::R_LARCH_ABS64_LO20)
147 .Case(S: "abs64_hi12", Value: ELF::R_LARCH_ABS64_HI12)
148 .Case(S: "pc_hi20", Value: ELF::R_LARCH_PCALA_HI20)
149 .Case(S: "pc_lo12", Value: ELF::R_LARCH_PCALA_LO12)
150 .Case(S: "pc64_lo20", Value: ELF::R_LARCH_PCALA64_LO20)
151 .Case(S: "pc64_hi12", Value: ELF::R_LARCH_PCALA64_HI12)
152 .Case(S: "got_pc_hi20", Value: ELF::R_LARCH_GOT_PC_HI20)
153 .Case(S: "got_pc_lo12", Value: ELF::R_LARCH_GOT_PC_LO12)
154 .Case(S: "got64_pc_lo20", Value: ELF::R_LARCH_GOT64_PC_LO20)
155 .Case(S: "got64_pc_hi12", Value: ELF::R_LARCH_GOT64_PC_HI12)
156 .Case(S: "got_hi20", Value: ELF::R_LARCH_GOT_HI20)
157 .Case(S: "got_lo12", Value: ELF::R_LARCH_GOT_LO12)
158 .Case(S: "got64_lo20", Value: ELF::R_LARCH_GOT64_LO20)
159 .Case(S: "got64_hi12", Value: ELF::R_LARCH_GOT64_HI12)
160 .Case(S: "le_hi20", Value: ELF::R_LARCH_TLS_LE_HI20)
161 .Case(S: "le_lo12", Value: ELF::R_LARCH_TLS_LE_LO12)
162 .Case(S: "le64_lo20", Value: ELF::R_LARCH_TLS_LE64_LO20)
163 .Case(S: "le64_hi12", Value: ELF::R_LARCH_TLS_LE64_HI12)
164 .Case(S: "ie_pc_hi20", Value: ELF::R_LARCH_TLS_IE_PC_HI20)
165 .Case(S: "ie_pc_lo12", Value: ELF::R_LARCH_TLS_IE_PC_LO12)
166 .Case(S: "ie64_pc_lo20", Value: ELF::R_LARCH_TLS_IE64_PC_LO20)
167 .Case(S: "ie64_pc_hi12", Value: ELF::R_LARCH_TLS_IE64_PC_HI12)
168 .Case(S: "ie_hi20", Value: ELF::R_LARCH_TLS_IE_HI20)
169 .Case(S: "ie_lo12", Value: ELF::R_LARCH_TLS_IE_LO12)
170 .Case(S: "ie64_lo20", Value: ELF::R_LARCH_TLS_IE64_LO20)
171 .Case(S: "ie64_hi12", Value: ELF::R_LARCH_TLS_IE64_HI12)
172 .Case(S: "ld_pc_hi20", Value: ELF::R_LARCH_TLS_LD_PC_HI20)
173 .Case(S: "ld_hi20", Value: ELF::R_LARCH_TLS_LD_HI20)
174 .Case(S: "gd_pc_hi20", Value: ELF::R_LARCH_TLS_GD_PC_HI20)
175 .Case(S: "gd_hi20", Value: ELF::R_LARCH_TLS_GD_HI20)
176 .Case(S: "call36", Value: ELF::R_LARCH_CALL36)
177 .Case(S: "desc_pc_hi20", Value: ELF::R_LARCH_TLS_DESC_PC_HI20)
178 .Case(S: "desc_pc_lo12", Value: ELF::R_LARCH_TLS_DESC_PC_LO12)
179 .Case(S: "desc64_pc_lo20", Value: ELF::R_LARCH_TLS_DESC64_PC_LO20)
180 .Case(S: "desc64_pc_hi12", Value: ELF::R_LARCH_TLS_DESC64_PC_HI12)
181 .Case(S: "desc_hi20", Value: ELF::R_LARCH_TLS_DESC_HI20)
182 .Case(S: "desc_lo12", Value: ELF::R_LARCH_TLS_DESC_LO12)
183 .Case(S: "desc64_lo20", Value: ELF::R_LARCH_TLS_DESC64_LO20)
184 .Case(S: "desc64_hi12", Value: ELF::R_LARCH_TLS_DESC64_HI12)
185 .Case(S: "desc_ld", Value: ELF::R_LARCH_TLS_DESC_LD)
186 .Case(S: "desc_call", Value: ELF::R_LARCH_TLS_DESC_CALL)
187 .Case(S: "le_hi20_r", Value: ELF::R_LARCH_TLS_LE_HI20_R)
188 .Case(S: "le_add_r", Value: ELF::R_LARCH_TLS_LE_ADD_R)
189 .Case(S: "le_lo12_r", Value: ELF::R_LARCH_TLS_LE_LO12_R)
190 .Case(S: "pcrel_20", Value: ELF::R_LARCH_PCREL20_S2)
191 .Case(S: "ld_pcrel_20", Value: ELF::R_LARCH_TLS_LD_PCREL20_S2)
192 .Case(S: "gd_pcrel_20", Value: ELF::R_LARCH_TLS_GD_PCREL20_S2)
193 .Case(S: "desc_pcrel_20", Value: ELF::R_LARCH_TLS_DESC_PCREL20_S2)
194 .Default(Value: 0);
195}
196
197void LoongArchMCAsmInfo::anchor() {}
198
199LoongArchMCAsmInfo::LoongArchMCAsmInfo(const Triple &TT) {
200 CodePointerSize = CalleeSaveStackSlotSize = TT.isArch64Bit() ? 8 : 4;
201 AlignmentIsInBytes = false;
202 Data8bitsDirective = "\t.byte\t";
203 Data16bitsDirective = "\t.half\t";
204 Data32bitsDirective = "\t.word\t";
205 Data64bitsDirective = "\t.dword\t";
206 ZeroDirective = "\t.space\t";
207 CommentString = "#";
208 SupportsDebugInformation = true;
209 DwarfRegNumForCFI = true;
210 ExceptionsType = ExceptionHandling::DwarfCFI;
211}
212
213void LoongArchMCAsmInfo::printSpecifierExpr(raw_ostream &OS,
214 const MCSpecifierExpr &Expr) const {
215 auto S = Expr.getSpecifier();
216 bool HasSpecifier = S != 0 && S != ELF::R_LARCH_B26;
217 if (HasSpecifier)
218 OS << '%' << getLoongArchSpecifierName(S) << '(';
219 printExpr(OS, *Expr.getSubExpr());
220 if (HasSpecifier)
221 OS << ')';
222}
223