Add an option to pad an uleb128 to MCObjectWriter and remove the uleb128 encoding from the DWARF asm printer.
As a side effect we now print dwarf ulebs with .ascii directives.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143809 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCObjectWriter.cpp b/lib/MC/MCObjectWriter.cpp
index efe9f68..1888739 100644
--- a/lib/MC/MCObjectWriter.cpp
+++ b/lib/MC/MCObjectWriter.cpp
@@ -33,14 +33,22 @@
}
/// Utility function to encode a ULEB128 value.
-void MCObjectWriter::EncodeULEB128(uint64_t Value, raw_ostream &OS) {
+void MCObjectWriter::EncodeULEB128(uint64_t Value, raw_ostream &OS,
+ unsigned Padding) {
do {
uint8_t Byte = Value & 0x7f;
Value >>= 7;
- if (Value != 0)
+ if (Value != 0 || Padding != 0)
Byte |= 0x80; // Mark this byte that that more bytes will follow.
OS << char(Byte);
} while (Value != 0);
+
+ // Pad with 0x80 and emit a null byte at the end.
+ if (Padding != 0) {
+ for (; Padding != 1; --Padding)
+ OS << '\x80';
+ OS << '\x00';
+ }
}
bool
diff --git a/lib/MC/MCStreamer.cpp b/lib/MC/MCStreamer.cpp
index 2a37f82..62abe54 100644
--- a/lib/MC/MCStreamer.cpp
+++ b/lib/MC/MCStreamer.cpp
@@ -94,10 +94,11 @@
/// EmitULEB128Value - Special case of EmitULEB128Value that avoids the
/// client having to pass in a MCExpr for constant integers.
-void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned AddrSpace) {
+void MCStreamer::EmitULEB128IntValue(uint64_t Value, unsigned AddrSpace,
+ unsigned Padding) {
SmallString<32> Tmp;
raw_svector_ostream OSE(Tmp);
- MCObjectWriter::EncodeULEB128(Value, OSE);
+ MCObjectWriter::EncodeULEB128(Value, OSE, Padding);
EmitBytes(OSE.str(), AddrSpace);
}