1 //===- lib/MC/MCSectionXCOFF.cpp - XCOFF Code Section Representation ------===//
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 #include "llvm/MC/MCSectionXCOFF.h"
10 #include "llvm/MC/MCAsmInfo.h"
11 #include "llvm/MC/MCExpr.h"
12 #include "llvm/Support/raw_ostream.h"
13 
14 using namespace llvm;
15 
16 MCSectionXCOFF::~MCSectionXCOFF() = default;
17 
18 void MCSectionXCOFF::PrintSwitchToSection(const MCAsmInfo &MAI, const Triple &T,
19                                           raw_ostream &OS,
20                                           const MCExpr *Subsection) const {
21   if (getKind().isText()) {
22     if (getMappingClass() != XCOFF::XMC_PR)
23       llvm_unreachable("Unsupported storage-mapping class for .text csect");
24 
25     OS << "\t.csect " << getSectionName() << "["
26        << "PR"
27        << "]" << '\n';
28     return;
29   }
30 
31   if (getKind().isBSSLocal() || getKind().isCommon()) {
32     assert((getMappingClass() == XCOFF::XMC_RW ||
33             getMappingClass() == XCOFF::XMC_BS) &&
34            "Generated a storage-mapping class for a common/bss csect we don't "
35            "understand how to switch to.");
36     assert(getCSectType() == XCOFF::XTY_CM &&
37            "wrong csect type for .bss csect");
38     // Don't have to print a directive for switching to section for commons.
39     // '.comm' and '.lcomm' directives for the variable will create the needed
40     // csect.
41     return;
42   }
43 
44   report_fatal_error("Printing for this SectionKind is unimplemented.");
45 }
46 
47 bool MCSectionXCOFF::UseCodeAlign() const { return getKind().isText(); }
48 
49 bool MCSectionXCOFF::isVirtualSection() const { return XCOFF::XTY_CM == Type; }
50