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gerrit-public.fairphone.software / toolchain / llvm-project / 964782adbb1dc17413707e173f323a19ff479c7d / . / llvm / lib / Target / AVR / MCTargetDesc / AVRELFObjectWriter.cpp
blob: 161f305fd014612e5469e3b453e70a711fd4cbb8 [file] [log] [blame]
Dylan McKay4a254992016-09-30 14:09:20 +0000[diff] [blame]1//===-- AVRELFObjectWriter.cpp - AVR ELF Writer ---------------------------===//
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#include "MCTargetDesc/AVRFixupKinds.h"
11#include "MCTargetDesc/AVRMCTargetDesc.h"
12
13#include "llvm/MC/MCAssembler.h"
14#include "llvm/MC/MCELFObjectWriter.h"
15#include "llvm/MC/MCExpr.h"
16#include "llvm/MC/MCSection.h"
17#include "llvm/MC/MCValue.h"
18#include "llvm/Support/ErrorHandling.h"
19
20namespace llvm {
21
22/// Writes AVR machine code into an ELF32 object file.
23class AVRELFObjectWriter : public MCELFObjectTargetWriter {
24public:
25 AVRELFObjectWriter(uint8_t OSABI);
26
27 virtual ~AVRELFObjectWriter() {}
28
29 unsigned getRelocType(MCContext &Ctx,
30 const MCValue &Target,
31 const MCFixup &Fixup,
32 bool IsPCRel) const override;
33};
34
35AVRELFObjectWriter::AVRELFObjectWriter(uint8_t OSABI)
36 : MCELFObjectTargetWriter(false, OSABI, ELF::EM_AVR, true, false) {}
37
38unsigned AVRELFObjectWriter::getRelocType(MCContext &Ctx,
39 const MCValue &Target,
40 const MCFixup &Fixup,
41 bool IsPCRel) const {
42 switch ((unsigned) Fixup.getKind()) {
43 case FK_Data_1:
44 case FK_Data_4:
45 llvm_unreachable("unsupported relocation type");
46 case FK_Data_2:
47 return ELF::R_AVR_16_PM;
48 case AVR::fixup_32:
49 return ELF::R_AVR_32;
50 case AVR::fixup_7_pcrel:
51 return ELF::R_AVR_7_PCREL;
52 case AVR::fixup_13_pcrel:
53 return ELF::R_AVR_13_PCREL;
54 case AVR::fixup_16:
55 return ELF::R_AVR_16;
56 case AVR::fixup_16_pm:
57 return ELF::R_AVR_16_PM;
58 case AVR::fixup_lo8_ldi:
59 return ELF::R_AVR_LO8_LDI;
60 case AVR::fixup_hi8_ldi:
61 return ELF::R_AVR_HI8_LDI;
62 case AVR::fixup_hh8_ldi:
63 return ELF::R_AVR_HH8_LDI;
64 case AVR::fixup_lo8_ldi_neg:
65 return ELF::R_AVR_LO8_LDI_NEG;
66 case AVR::fixup_hi8_ldi_neg:
67 return ELF::R_AVR_HI8_LDI_NEG;
68 case AVR::fixup_hh8_ldi_neg:
69 return ELF::R_AVR_HH8_LDI_NEG;
70 case AVR::fixup_lo8_ldi_pm:
71 return ELF::R_AVR_LO8_LDI_PM;
72 case AVR::fixup_hi8_ldi_pm:
73 return ELF::R_AVR_HI8_LDI_PM;
74 case AVR::fixup_hh8_ldi_pm:
75 return ELF::R_AVR_HH8_LDI_PM;
76 case AVR::fixup_lo8_ldi_pm_neg:
77 return ELF::R_AVR_LO8_LDI_PM_NEG;
78 case AVR::fixup_hi8_ldi_pm_neg:
79 return ELF::R_AVR_HI8_LDI_PM_NEG;
80 case AVR::fixup_hh8_ldi_pm_neg:
81 return ELF::R_AVR_HH8_LDI_PM_NEG;
82 case AVR::fixup_call:
83 return ELF::R_AVR_CALL;
84 case AVR::fixup_ldi:
85 return ELF::R_AVR_LDI;
86 case AVR::fixup_6:
87 return ELF::R_AVR_6;
88 case AVR::fixup_6_adiw:
89 return ELF::R_AVR_6_ADIW;
90 case AVR::fixup_ms8_ldi:
91 return ELF::R_AVR_MS8_LDI;
92 case AVR::fixup_ms8_ldi_neg:
93 return ELF::R_AVR_MS8_LDI_NEG;
94 case AVR::fixup_lo8_ldi_gs:
95 return ELF::R_AVR_LO8_LDI_GS;
96 case AVR::fixup_hi8_ldi_gs:
97 return ELF::R_AVR_HI8_LDI_GS;
98 case AVR::fixup_8:
99 return ELF::R_AVR_8;
100 case AVR::fixup_8_lo8:
101 return ELF::R_AVR_8_LO8;
102 case AVR::fixup_8_hi8:
103 return ELF::R_AVR_8_HI8;
104 case AVR::fixup_8_hlo8:
105 return ELF::R_AVR_8_HLO8;
106 case AVR::fixup_sym_diff:
107 return ELF::R_AVR_SYM_DIFF;
108 case AVR::fixup_16_ldst:
109 return ELF::R_AVR_16_LDST;
110 case AVR::fixup_lds_sts_16:
111 return ELF::R_AVR_LDS_STS_16;
112 case AVR::fixup_port6:
113 return ELF::R_AVR_PORT6;
114 case AVR::fixup_port5:
115 return ELF::R_AVR_PORT5;
116 default:
117 llvm_unreachable("invalid fixup kind!");
118 }
119}
120
121MCObjectWriter *createAVRELFObjectWriter(raw_pwrite_stream &OS, uint8_t OSABI) {
122 MCELFObjectTargetWriter *MOTW = new AVRELFObjectWriter(OSABI);
123 return createELFObjectWriter(MOTW, OS, true);
124}
125
126} // end of namespace llvm
127