[Mips] TargetStreamer Support for .set mips16.

This patch updates .set mips16 support which
affects the ELF ABI and its flags. In addition the patch uses
a common interface for both the MipsTargetSteamer and
MipsObjectStreamer that the assembler uses for
both ELF and ASCII output for these directives.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199851 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 16 insertions, 0 deletions

diff --git a/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp b/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
index 909f9dc159..786edf5d35 100644
--- a/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
+++ b/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
@@ -63,6 +63,12 @@ void MipsTargetAsmStreamer::emitDirectiveAbiCalls() { OS << "\t.abicalls\n"; }
 void MipsTargetAsmStreamer::emitDirectiveOptionPic0() {
   OS << "\t.option\tpic0\n";
 }
+void MipsTargetAsmStreamer::emitDirectiveSetMips16(bool IsMips16) {
+  if (IsMips16)
+    OS << "\t.set\tmips16\n";
+  else
+    OS << "\t.set\tnomips16\n";
+}
 
 // This part is for ELF object output.
 MipsTargetELFStreamer::MipsTargetELFStreamer() : MicroMipsEnabled(false) {}
@@ -122,3 +128,13 @@ void MipsTargetELFStreamer::emitDirectiveOptionPic0() {
   Flags &= ~ELF::EF_MIPS_PIC;
   MCA.setELFHeaderEFlags(Flags);
 }
+void MipsTargetELFStreamer::emitDirectiveSetMips16(bool IsMips16) {
+  // Don't do anything for .set nomips16
+  if (!IsMips16)
+    return;
+
+  MCAssembler &MCA = getStreamer().getAssembler();
+  unsigned Flags = MCA.getELFHeaderEFlags();
+  Flags |= ELF::EF_MIPS_ARCH_ASE_M16;
+  MCA.setELFHeaderEFlags(Flags);
+}