[Target] Implement the ".rdata" MIPS assembly directive.

Patch by John Baldwin < jhb at freebsd dot org >!

Differential Revision:  https://reviews.llvm.org/D34452

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305949 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/Mips/AsmParser/MipsAsmParser.cpp b/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
index 694c201..426598d 100644 (file)
--- a/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
+++ b/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
@@ -322,6 +322,7 @@ class MipsAsmParser : public MCTargetAsmParser {
   bool parseDirectiveSet();
   bool parseDirectiveOption();
   bool parseInsnDirective();
+  bool parseRSectionDirective(StringRef Section);
   bool parseSSectionDirective(StringRef Section, unsigned Type);
 
   bool parseSetAtDirective();
@@ -6952,6 +6953,23 @@ bool MipsAsmParser::parseInsnDirective() {
   return false;
 }
 
+/// parseRSectionDirective
+///  ::= .rdata
+bool MipsAsmParser::parseRSectionDirective(StringRef Section) {
+  // If this is not the end of the statement, report an error.
+  if (getLexer().isNot(AsmToken::EndOfStatement)) {
+    reportParseError("unexpected token, expected end of statement");
+    return false;
+  }
+
+  MCSection *ELFSection =
+      getContext().getELFSection(Section, ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
+  getParser().getStreamer().SwitchSection(ELFSection);
+
+  getParser().Lex(); // Eat EndOfStatement token.
+  return false;
+}
+
 /// parseSSectionDirective
 ///  ::= .sbss
 ///  ::= .sdata
@@ -7499,6 +7517,10 @@ bool MipsAsmParser::ParseDirective(AsmToken DirectiveID) {
     parseInsnDirective();
     return false;
   }
+  if (IDVal == ".rdata") {
+    parseRSectionDirective(".rodata");
+    return false;
+  }
   if (IDVal == ".sbss") {
     parseSSectionDirective(IDVal, ELF::SHT_NOBITS);
     return false;