1 files changed, 81 insertions, 2 deletions
diff --git a/llvm/lib/MC/MCAsmInfoWasm.cpp b/llvm/lib/MC/MCAsmInfoWasm.cpp
index ce6ec7e..5e44f48 100644
--- a/llvm/lib/MC/MCAsmInfoWasm.cpp
+++ b/llvm/lib/MC/MCAsmInfoWasm.cpp
@@ -12,9 +12,11 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/MC/MCAsmInfoWasm.h"
-using namespace llvm;
+#include "llvm/MC/MCSectionWasm.h"
+#include "llvm/MC/MCSymbolWasm.h"
+#include "llvm/Support/raw_ostream.h"
 
-void MCAsmInfoWasm::anchor() {}
+using namespace llvm;
 
 MCAsmInfoWasm::MCAsmInfoWasm() {
   HasIdentDirective = true;
@@ -23,3 +25,80 @@ MCAsmInfoWasm::MCAsmInfoWasm() {
   PrivateGlobalPrefix = ".L";
   PrivateLabelPrefix = ".L";
 }
+
+static void printName(raw_ostream &OS, StringRef Name) {
+  if (Name.find_first_not_of("0123456789_."
+                             "abcdefghijklmnopqrstuvwxyz"
+                             "ABCDEFGHIJKLMNOPQRSTUVWXYZ") == Name.npos) {
+    OS << Name;
+    return;
+  }
+  OS << '"';
+  for (const char *B = Name.begin(), *E = Name.end(); B < E; ++B) {
+    if (*B == '"') // Unquoted "
+      OS << "\\\"";
+    else if (*B != '\\') // Neither " or backslash
+      OS << *B;
+    else if (B + 1 == E) // Trailing backslash
+      OS << "\\\\";
+    else {
+      OS << B[0] << B[1]; // Quoted character
+      ++B;
+    }
+  }
+  OS << '"';
+}
+
+void MCAsmInfoWasm::printSwitchToSection(const MCSection &Section,
+                                         uint32_t Subsection, const Triple &T,
+                                         raw_ostream &OS) const {
+  auto &Sec = static_cast<const MCSectionWasm &>(Section);
+  if (shouldOmitSectionDirective(Sec.getName())) {
+    OS << '\t' << Sec.getName();
+    if (Subsection)
+      OS << '\t' << Subsection;
+    OS << '\n';
+    return;
+  }
+
+  OS << "\t.section\t";
+  printName(OS, Sec.getName());
+  OS << ",\"";
+
+  if (Sec.IsPassive)
+    OS << 'p';
+  if (Sec.Group)
+    OS << 'G';
+  if (Sec.SegmentFlags & wasm::WASM_SEG_FLAG_STRINGS)
+    OS << 'S';
+  if (Sec.SegmentFlags & wasm::WASM_SEG_FLAG_TLS)
+    OS << 'T';
+  if (Sec.SegmentFlags & wasm::WASM_SEG_FLAG_RETAIN)
+    OS << 'R';
+
+  OS << '"';
+
+  OS << ',';
+
+  // If comment string is '@', e.g. as on ARM - use '%' instead
+  if (getCommentString()[0] == '@')
+    OS << '%';
+  else
+    OS << '@';
+
+  // TODO: Print section type.
+
+  if (Sec.Group) {
+    OS << ",";
+    printName(OS, Sec.Group->getName());
+    OS << ",comdat";
+  }
+
+  if (Sec.isUnique())
+    OS << ",unique," << Sec.UniqueID;
+
+  OS << '\n';
+
+  if (Subsection)
+    OS << "\t.subsection\t" << Subsection << '\n';
+}