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 // Used in data directives
41 .Case(S: "pltpcrel", Value: ELF::R_RISCV_PLT32)
42 .Case(S: "gotpcrel", Value: ELF::R_RISCV_GOT32_PCREL)
43 .Default(Value: 0);
44}
45
46StringRef RISCV::getSpecifierName(Specifier S) {
47 switch (S) {
48 case RISCV::S_None:
49 llvm_unreachable("not used as %specifier()");
50 case RISCV::S_LO:
51 return "lo";
52 case ELF::R_RISCV_HI20:
53 return "hi";
54 case RISCV::S_PCREL_LO:
55 return "pcrel_lo";
56 case RISCV::S_PCREL_HI:
57 return "pcrel_hi";
58 case RISCV::S_GOT_HI:
59 return "got_pcrel_hi";
60 case RISCV::S_TPREL_LO:
61 return "tprel_lo";
62 case ELF::R_RISCV_TPREL_HI20:
63 return "tprel_hi";
64 case ELF::R_RISCV_TPREL_ADD:
65 return "tprel_add";
66 case ELF::R_RISCV_TLS_GOT_HI20:
67 return "tls_ie_pcrel_hi";
68 case ELF::R_RISCV_TLSDESC_HI20:
69 return "tlsdesc_hi";
70 case ELF::R_RISCV_TLSDESC_LOAD_LO12:
71 return "tlsdesc_load_lo";
72 case ELF::R_RISCV_TLSDESC_ADD_LO12:
73 return "tlsdesc_add_lo";
74 case ELF::R_RISCV_TLSDESC_CALL:
75 return "tlsdesc_call";
76 case ELF::R_RISCV_TLS_GD_HI20:
77 return "tls_gd_pcrel_hi";
78 case RISCV::S_CALL_PLT:
79 return "call_plt";
80 case ELF::R_RISCV_32_PCREL:
81 return "32_pcrel";
82 case ELF::R_RISCV_GOT32_PCREL:
83 return "gotpcrel";
84 case ELF::R_RISCV_PLT32:
85 return "pltpcrel";
86 case RISCV::S_QC_ABS20:
87 return "qc.abs20";
88 }
89 llvm_unreachable("Invalid ELF symbol kind");
90}
91