blob: 6025e4b2437ca574deabc44133d6e025b22bd234 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
//===-- AVRELFObjectWriter.cpp - AVR ELF Writer ---------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "MCTargetDesc/AVRFixupKinds.h"
#include "MCTargetDesc/AVRMCTargetDesc.h"
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCELFObjectWriter.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCObjectWriter.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Support/ErrorHandling.h"
namespace llvm {
/// Writes AVR machine code into an ELF32 object file.
class AVRELFObjectWriter : public MCELFObjectTargetWriter {
public:
AVRELFObjectWriter(uint8_t OSABI);
virtual ~AVRELFObjectWriter() {}
unsigned getRelocType(MCContext &Ctx,
const MCValue &Target,
const MCFixup &Fixup,
bool IsPCRel) const override;
};
AVRELFObjectWriter::AVRELFObjectWriter(uint8_t OSABI)
: MCELFObjectTargetWriter(false, OSABI, ELF::EM_AVR, true) {}
unsigned AVRELFObjectWriter::getRelocType(MCContext &Ctx,
const MCValue &Target,
const MCFixup &Fixup,
bool IsPCRel) const {
MCSymbolRefExpr::VariantKind Modifier = Target.getAccessVariant();
switch ((unsigned) Fixup.getKind()) {
case FK_Data_1:
switch (Modifier) {
default:
llvm_unreachable("Unsupported Modifier");
case MCSymbolRefExpr::VK_None:
return ELF::R_AVR_8;
case MCSymbolRefExpr::VK_AVR_DIFF8:
return ELF::R_AVR_DIFF8;
case MCSymbolRefExpr::VK_AVR_LO8:
return ELF::R_AVR_8_LO8;
case MCSymbolRefExpr::VK_AVR_HI8:
return ELF::R_AVR_8_HI8;
case MCSymbolRefExpr::VK_AVR_HLO8:
return ELF::R_AVR_8_HLO8;
}
case FK_Data_4:
switch (Modifier) {
default:
llvm_unreachable("Unsupported Modifier");
case MCSymbolRefExpr::VK_None:
return ELF::R_AVR_32;
case MCSymbolRefExpr::VK_AVR_DIFF32:
return ELF::R_AVR_DIFF32;
}
case FK_Data_2:
switch (Modifier) {
default:
llvm_unreachable("Unsupported Modifier");
case MCSymbolRefExpr::VK_None:
return ELF::R_AVR_16;
case MCSymbolRefExpr::VK_AVR_NONE:
return ELF::R_AVR_16_PM;
case MCSymbolRefExpr::VK_AVR_DIFF16:
return ELF::R_AVR_DIFF16;
}
case AVR::fixup_32:
return ELF::R_AVR_32;
case AVR::fixup_7_pcrel:
return ELF::R_AVR_7_PCREL;
case AVR::fixup_13_pcrel:
return ELF::R_AVR_13_PCREL;
case AVR::fixup_16:
return ELF::R_AVR_16;
case AVR::fixup_16_pm:
return ELF::R_AVR_16_PM;
case AVR::fixup_lo8_ldi:
return ELF::R_AVR_LO8_LDI;
case AVR::fixup_hi8_ldi:
return ELF::R_AVR_HI8_LDI;
case AVR::fixup_hh8_ldi:
return ELF::R_AVR_HH8_LDI;
case AVR::fixup_lo8_ldi_neg:
return ELF::R_AVR_LO8_LDI_NEG;
case AVR::fixup_hi8_ldi_neg:
return ELF::R_AVR_HI8_LDI_NEG;
case AVR::fixup_hh8_ldi_neg:
return ELF::R_AVR_HH8_LDI_NEG;
case AVR::fixup_lo8_ldi_pm:
return ELF::R_AVR_LO8_LDI_PM;
case AVR::fixup_hi8_ldi_pm:
return ELF::R_AVR_HI8_LDI_PM;
case AVR::fixup_hh8_ldi_pm:
return ELF::R_AVR_HH8_LDI_PM;
case AVR::fixup_lo8_ldi_pm_neg:
return ELF::R_AVR_LO8_LDI_PM_NEG;
case AVR::fixup_hi8_ldi_pm_neg:
return ELF::R_AVR_HI8_LDI_PM_NEG;
case AVR::fixup_hh8_ldi_pm_neg:
return ELF::R_AVR_HH8_LDI_PM_NEG;
case AVR::fixup_call:
return ELF::R_AVR_CALL;
case AVR::fixup_ldi:
return ELF::R_AVR_LDI;
case AVR::fixup_6:
return ELF::R_AVR_6;
case AVR::fixup_6_adiw:
return ELF::R_AVR_6_ADIW;
case AVR::fixup_ms8_ldi:
return ELF::R_AVR_MS8_LDI;
case AVR::fixup_ms8_ldi_neg:
return ELF::R_AVR_MS8_LDI_NEG;
case AVR::fixup_lo8_ldi_gs:
return ELF::R_AVR_LO8_LDI_GS;
case AVR::fixup_hi8_ldi_gs:
return ELF::R_AVR_HI8_LDI_GS;
case AVR::fixup_8:
return ELF::R_AVR_8;
case AVR::fixup_8_lo8:
return ELF::R_AVR_8_LO8;
case AVR::fixup_8_hi8:
return ELF::R_AVR_8_HI8;
case AVR::fixup_8_hlo8:
return ELF::R_AVR_8_HLO8;
case AVR::fixup_diff8:
return ELF::R_AVR_DIFF8;
case AVR::fixup_diff16:
return ELF::R_AVR_DIFF16;
case AVR::fixup_diff32:
return ELF::R_AVR_DIFF32;
case AVR::fixup_lds_sts_16:
return ELF::R_AVR_LDS_STS_16;
case AVR::fixup_port6:
return ELF::R_AVR_PORT6;
case AVR::fixup_port5:
return ELF::R_AVR_PORT5;
default:
llvm_unreachable("invalid fixup kind!");
}
}
std::unique_ptr<MCObjectTargetWriter> createAVRELFObjectWriter(uint8_t OSABI) {
return make_unique<AVRELFObjectWriter>(OSABI);
}
} // end of namespace llvm
|
