1 //===- MipsABIFlagsSection.cpp - Mips ELF ABI Flags Section ---------------===//
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/MipsABIFlagsSection.h"
11 #include "llvm/ADT/StringRef.h"
12 #include "llvm/MC/MCStreamer.h"
13 #include "llvm/Support/ErrorHandling.h"
14 #include "llvm/Support/MipsABIFlags.h"
15
16 using namespace llvm;
17
getFpABIValue()18 uint8_t MipsABIFlagsSection::getFpABIValue() {
19 switch (FpABI) {
20 case FpABIKind::ANY:
21 return Mips::Val_GNU_MIPS_ABI_FP_ANY;
22 case FpABIKind::SOFT:
23 return Mips::Val_GNU_MIPS_ABI_FP_SOFT;
24 case FpABIKind::XX:
25 return Mips::Val_GNU_MIPS_ABI_FP_XX;
26 case FpABIKind::S32:
27 return Mips::Val_GNU_MIPS_ABI_FP_DOUBLE;
28 case FpABIKind::S64:
29 if (Is32BitABI)
30 return OddSPReg ? Mips::Val_GNU_MIPS_ABI_FP_64
31 : Mips::Val_GNU_MIPS_ABI_FP_64A;
32 return Mips::Val_GNU_MIPS_ABI_FP_DOUBLE;
33 }
34
35 llvm_unreachable("unexpected fp abi value");
36 }
37
getFpABIString(FpABIKind Value)38 StringRef MipsABIFlagsSection::getFpABIString(FpABIKind Value) {
39 switch (Value) {
40 case FpABIKind::XX:
41 return "xx";
42 case FpABIKind::S32:
43 return "32";
44 case FpABIKind::S64:
45 return "64";
46 default:
47 llvm_unreachable("unsupported fp abi value");
48 }
49 }
50
getCPR1SizeValue()51 uint8_t MipsABIFlagsSection::getCPR1SizeValue() {
52 if (FpABI == FpABIKind::XX)
53 return (uint8_t)Mips::AFL_REG_32;
54 return (uint8_t)CPR1Size;
55 }
56
57 namespace llvm {
58
operator <<(MCStreamer & OS,MipsABIFlagsSection & ABIFlagsSection)59 MCStreamer &operator<<(MCStreamer &OS, MipsABIFlagsSection &ABIFlagsSection) {
60 // Write out a Elf_Internal_ABIFlags_v0 struct
61 OS.EmitIntValue(ABIFlagsSection.getVersionValue(), 2); // version
62 OS.EmitIntValue(ABIFlagsSection.getISALevelValue(), 1); // isa_level
63 OS.EmitIntValue(ABIFlagsSection.getISARevisionValue(), 1); // isa_rev
64 OS.EmitIntValue(ABIFlagsSection.getGPRSizeValue(), 1); // gpr_size
65 OS.EmitIntValue(ABIFlagsSection.getCPR1SizeValue(), 1); // cpr1_size
66 OS.EmitIntValue(ABIFlagsSection.getCPR2SizeValue(), 1); // cpr2_size
67 OS.EmitIntValue(ABIFlagsSection.getFpABIValue(), 1); // fp_abi
68 OS.EmitIntValue(ABIFlagsSection.getISAExtensionValue(), 4); // isa_ext
69 OS.EmitIntValue(ABIFlagsSection.getASESetValue(), 4); // ases
70 OS.EmitIntValue(ABIFlagsSection.getFlags1Value(), 4); // flags1
71 OS.EmitIntValue(ABIFlagsSection.getFlags2Value(), 4); // flags2
72 return OS;
73 }
74
75 } // end namespace llvm
76