[AIX]Emit function descriptor csect in assembly
This patch emits the function descriptor csect for functions with definitions
under both 32-bit/64-bit mode on AIX.
Differential Revision: https://reviews.llvm.org/D66724
llvm-svn: 373009
diff --git a/llvm/lib/MC/MCSectionXCOFF.cpp b/llvm/lib/MC/MCSectionXCOFF.cpp
index db27752..d52959f 100644
--- a/llvm/lib/MC/MCSectionXCOFF.cpp
+++ b/llvm/lib/MC/MCSectionXCOFF.cpp
@@ -15,26 +15,46 @@
MCSectionXCOFF::~MCSectionXCOFF() = default;
+static StringRef getMappingClassString(XCOFF::StorageMappingClass SMC) {
+ switch (SMC) {
+ case XCOFF::XMC_DS:
+ return "DS";
+ case XCOFF::XMC_RW:
+ return "RW";
+ case XCOFF::XMC_PR:
+ return "PR";
+ default:
+ report_fatal_error("Unhandled storage-mapping class.");
+ }
+}
+
void MCSectionXCOFF::PrintSwitchToSection(const MCAsmInfo &MAI, const Triple &T,
raw_ostream &OS,
const MCExpr *Subsection) const {
if (getKind().isText()) {
if (getMappingClass() != XCOFF::XMC_PR)
- llvm_unreachable("Unsupported storage-mapping class for .text csect");
+ report_fatal_error("Unhandled storage-mapping class for .text csect");
OS << "\t.csect " << getSectionName() << "["
- << "PR"
+ << getMappingClassString(getMappingClass())
<< "]" << '\n';
return;
}
if (getKind().isData()) {
- assert(getMappingClass() == XCOFF::XMC_RW &&
- "Unhandled storage-mapping class for data section.");
-
- OS << "\t.csect " << getSectionName() << "["
- << "RW"
- << "]" << '\n';
+ switch (getMappingClass()) {
+ case XCOFF::XMC_RW:
+ case XCOFF::XMC_DS:
+ OS << "\t.csect " << getSectionName() << "["
+ << getMappingClassString(getMappingClass()) << "]" << '\n';
+ break;
+ case XCOFF::XMC_TC0:
+ OS << "\t.toc\n";
+ break;
+ default:
+ report_fatal_error(
+ "Unhandled storage-mapping class for .data csect.");
+ }
return;
}