1//===-- RISCVMCExpr.cpp - RISC-V specific MC expression classes -----------===//
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 implementation of the assembly expression modifiers
10// accepted by the RISC-V architecture (e.g. ":lo12:", ":gottprel_g1:", ...).
11//
12//===----------------------------------------------------------------------===//
13
14#include "MCTargetDesc/RISCVAsmBackend.h"
15#include "MCTargetDesc/RISCVMCAsmInfo.h"
16#include "llvm/BinaryFormat/ELF.h"
17#include "llvm/Support/ErrorHandling.h"
18
19using namespace llvm;
20
21#define DEBUG_TYPE "riscvmcexpr"
22
23RISCV::Specifier RISCV::parseSpecifierName(StringRef name) {
24 return StringSwitch<RISCV::Specifier>(name)
25 .Case(S: "lo", Value: RISCV::S_LO)
26 .Case(S: "hi", Value: ELF::R_RISCV_HI20)
27 .Case(S: "pcrel_lo", Value: RISCV::S_PCREL_LO)
28 .Case(S: "pcrel_hi", Value: RISCV::S_PCREL_HI)
29 .Case(S: "got_pcrel_hi", Value: RISCV::S_GOT_HI)
30 .Case(S: "tprel_lo", Value: RISCV::S_TPREL_LO)
31 .Case(S: "tprel_hi", Value: ELF::R_RISCV_TPREL_HI20)
32 .Case(S: "tprel_add", Value: ELF::R_RISCV_TPREL_ADD)
33 .Case(S: "tls_ie_pcrel_hi", Value: ELF::R_RISCV_TLS_GOT_HI20)
34 .Case(S: "tls_gd_pcrel_hi", Value: ELF::R_RISCV_TLS_GD_HI20)
35 .Case(S: "tlsdesc_hi", Value: ELF::R_RISCV_TLSDESC_HI20)
36 .Case(S: "tlsdesc_load_lo", Value: ELF::R_RISCV_TLSDESC_LOAD_LO12)
37 .Case(S: "tlsdesc_add_lo", Value: ELF::R_RISCV_TLSDESC_ADD_LO12)
38 .Case(S: "tlsdesc_call", Value: ELF::R_RISCV_TLSDESC_CALL)
39 .Case(S: "qc.abs20", Value: RISCV::S_QC_ABS20)
40 .Case(S: "qc.access", Value: RISCV::S_QC_ACCESS)
41 // Used in data directives
42 .Case(S: "pltpcrel", Value: ELF::R_RISCV_PLT32)
43 .Case(S: "gotpcrel", Value: ELF::R_RISCV_GOT32_PCREL)
44 .Default(Value: 0);
45}
46
47StringRef RISCV::getSpecifierName(Specifier S) {
48 switch (S) {
49 case RISCV::S_None:
50 llvm_unreachable("not used as %specifier()");
51 case RISCV::S_LO:
52 return "lo";
53 case ELF::R_RISCV_HI20:
54 return "hi";
55 case RISCV::S_PCREL_LO:
56 return "pcrel_lo";
57 case RISCV::S_PCREL_HI:
58 return "pcrel_hi";
59 case RISCV::S_GOT_HI:
60 return "got_pcrel_hi";
61 case RISCV::S_TPREL_LO:
62 return "tprel_lo";
63 case ELF::R_RISCV_TPREL_HI20:
64 return "tprel_hi";
65 case ELF::R_RISCV_TPREL_ADD:
66 return "tprel_add";
67 case ELF::R_RISCV_TLS_GOT_HI20:
68 return "tls_ie_pcrel_hi";
69 case ELF::R_RISCV_TLSDESC_HI20:
70 return "tlsdesc_hi";
71 case ELF::R_RISCV_TLSDESC_LOAD_LO12:
72 return "tlsdesc_load_lo";
73 case ELF::R_RISCV_TLSDESC_ADD_LO12:
74 return "tlsdesc_add_lo";
75 case ELF::R_RISCV_TLSDESC_CALL:
76 return "tlsdesc_call";
77 case ELF::R_RISCV_TLS_GD_HI20:
78 return "tls_gd_pcrel_hi";
79 case RISCV::S_CALL_PLT:
80 return "call_plt";
81 case ELF::R_RISCV_32_PCREL:
82 return "32_pcrel";
83 case ELF::R_RISCV_GOT32_PCREL:
84 return "gotpcrel";
85 case ELF::R_RISCV_PLT32:
86 return "pltpcrel";
87 case RISCV::S_QC_ABS20:
88 return "qc.abs20";
89 case RISCV::S_QC_ACCESS:
90 return "qc.access";
91 }
92 llvm_unreachable("Invalid ELF symbol kind");
93}
94