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-rw-r--r--lib/MC/MCAsmStreamer.cpp95
1 files changed, 67 insertions, 28 deletions
diff --git a/lib/MC/MCAsmStreamer.cpp b/lib/MC/MCAsmStreamer.cpp
index 227c937e8d1b..c99ce7752b30 100644
--- a/lib/MC/MCAsmStreamer.cpp
+++ b/lib/MC/MCAsmStreamer.cpp
@@ -1,4 +1,4 @@
-//===- lib/MC/MCAsmStreamer.cpp - Text Assembly Output --------------------===//
+//===- lib/MC/MCAsmStreamer.cpp - Text Assembly Output ----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
@@ -29,9 +29,11 @@
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/FormattedStream.h"
+#include "llvm/Support/LEB128.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/Path.h"
#include <cctype>
+
using namespace llvm;
namespace {
@@ -78,6 +80,9 @@ public:
}
EmitCommentsAndEOL();
}
+
+ void EmitSyntaxDirective() override;
+
void EmitCommentsAndEOL();
/// isVerboseAsm - Return true if this streamer supports verbose assembly at
@@ -160,7 +165,7 @@ public:
void EmitBytes(StringRef Data) override;
void EmitValueImpl(const MCExpr *Value, unsigned Size,
- const SMLoc &Loc = SMLoc()) override;
+ SMLoc Loc = SMLoc()) override;
void EmitIntValue(uint64_t Value, unsigned Size) override;
void EmitULEB128Value(const MCExpr *Value) override;
@@ -181,7 +186,7 @@ public:
void EmitCodeAlignment(unsigned ByteAlignment,
unsigned MaxBytesToEmit = 0) override;
- bool EmitValueToOffset(const MCExpr *Offset,
+ void emitValueToOffset(const MCExpr *Offset,
unsigned char Value = 0) override;
void EmitFileDirective(StringRef Filename) override;
@@ -207,6 +212,8 @@ public:
void EmitCFISameValue(int64_t Register) override;
void EmitCFIRelOffset(int64_t Register, int64_t Offset) override;
void EmitCFIAdjustCfaOffset(int64_t Adjustment) override;
+ void EmitCFIEscape(StringRef Values) override;
+ void EmitCFIGnuArgsSize(int64_t Size) override;
void EmitCFISignalFrame() override;
void EmitCFIUndefined(int64_t Register) override;
void EmitCFIRegister(int64_t Register1, int64_t Register2) override;
@@ -233,6 +240,9 @@ public:
void EmitBundleLock(bool AlignToEnd) override;
void EmitBundleUnlock() override;
+ bool EmitRelocDirective(const MCExpr &Offset, StringRef Name,
+ const MCExpr *Expr, SMLoc Loc) override;
+
/// EmitRawText - If this file is backed by an assembly streamer, this dumps
/// the specified string in the output .s file. This capability is
/// indicated by the hasRawTextSupport() predicate.
@@ -250,15 +260,9 @@ public:
void MCAsmStreamer::AddComment(const Twine &T) {
if (!IsVerboseAsm) return;
- // Make sure that CommentStream is flushed.
- CommentStream.flush();
-
T.toVector(CommentToEmit);
// Each comment goes on its own line.
CommentToEmit.push_back('\n');
-
- // Tell the comment stream that the vector changed underneath it.
- CommentStream.resync();
}
void MCAsmStreamer::EmitCommentsAndEOL() {
@@ -267,7 +271,6 @@ void MCAsmStreamer::EmitCommentsAndEOL() {
return;
}
- CommentStream.flush();
StringRef Comments = CommentToEmit;
assert(Comments.back() == '\n' &&
@@ -282,8 +285,6 @@ void MCAsmStreamer::EmitCommentsAndEOL() {
} while (!Comments.empty());
CommentToEmit.clear();
- // Tell the comment stream that the vector changed underneath it.
- CommentStream.resync();
}
static inline int64_t truncateToSize(int64_t Value, unsigned Bytes) {
@@ -372,6 +373,8 @@ void MCAsmStreamer::EmitDataRegion(MCDataRegionType Kind) {
void MCAsmStreamer::EmitVersionMin(MCVersionMinType Kind, unsigned Major,
unsigned Minor, unsigned Update) {
switch (Kind) {
+ case MCVM_WatchOSVersionMin: OS << "\t.watchos_version_min"; break;
+ case MCVM_TvOSVersionMin: OS << "\t.tvos_version_min"; break;
case MCVM_IOSVersionMin: OS << "\t.ios_version_min"; break;
case MCVM_OSXVersionMin: OS << "\t.macosx_version_min"; break;
}
@@ -480,6 +483,14 @@ void MCAsmStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {
EmitEOL();
}
+void MCAsmStreamer::EmitSyntaxDirective() {
+ if (MAI->getAssemblerDialect() == 1)
+ OS << "\t.intel_syntax noprefix\n";
+ // FIXME: Currently emit unprefix'ed registers.
+ // The intel_syntax directive has one optional argument
+ // with may have a value of prefix or noprefix.
+}
+
void MCAsmStreamer::BeginCOFFSymbolDef(const MCSymbol *Symbol) {
OS << "\t.def\t ";
Symbol->print(OS, MAI);
@@ -531,9 +542,6 @@ void MCAsmStreamer::emitELFSize(MCSymbolELF *Symbol, const MCExpr *Value) {
void MCAsmStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlignment) {
- // Common symbols do not belong to any actual section.
- AssignSection(Symbol, nullptr);
-
OS << "\t.comm\t";
Symbol->print(OS, MAI);
OS << ',' << Size;
@@ -553,9 +561,6 @@ void MCAsmStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
/// @param Size - The size of the common symbol.
void MCAsmStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
unsigned ByteAlign) {
- // Common symbols do not belong to any actual section.
- AssignSection(Symbol, nullptr);
-
OS << "\t.lcomm\t";
Symbol->print(OS, MAI);
OS << ',' << Size;
@@ -579,7 +584,7 @@ void MCAsmStreamer::EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
void MCAsmStreamer::EmitZerofill(MCSection *Section, MCSymbol *Symbol,
uint64_t Size, unsigned ByteAlignment) {
if (Symbol)
- AssignSection(Symbol, Section);
+ AssignFragment(Symbol, &Section->getDummyFragment());
// Note: a .zerofill directive does not switch sections.
OS << ".zerofill ";
@@ -603,7 +608,7 @@ void MCAsmStreamer::EmitZerofill(MCSection *Section, MCSymbol *Symbol,
// e.g. _a.
void MCAsmStreamer::EmitTBSSSymbol(MCSection *Section, MCSymbol *Symbol,
uint64_t Size, unsigned ByteAlignment) {
- AssignSection(Symbol, Section);
+ AssignFragment(Symbol, &Section->getDummyFragment());
assert(Symbol && "Symbol shouldn't be NULL!");
// Instead of using the Section we'll just use the shortcut.
@@ -654,7 +659,6 @@ static void PrintQuotedString(StringRef Data, raw_ostream &OS) {
OS << '"';
}
-
void MCAsmStreamer::EmitBytes(StringRef Data) {
assert(getCurrentSection().first &&
"Cannot emit contents before setting section!");
@@ -685,7 +689,7 @@ void MCAsmStreamer::EmitIntValue(uint64_t Value, unsigned Size) {
}
void MCAsmStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
- const SMLoc &Loc) {
+ SMLoc Loc) {
assert(Size <= 8 && "Invalid size");
assert(getCurrentSection().first &&
"Cannot emit contents before setting section!");
@@ -776,7 +780,6 @@ void MCAsmStreamer::EmitGPRel32Value(const MCExpr *Value) {
EmitEOL();
}
-
/// EmitFill - Emit NumBytes bytes worth of the value specified by
/// FillValue. This implements directives such as '.space'.
void MCAsmStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue) {
@@ -856,17 +859,15 @@ void MCAsmStreamer::EmitCodeAlignment(unsigned ByteAlignment,
1, MaxBytesToEmit);
}
-bool MCAsmStreamer::EmitValueToOffset(const MCExpr *Offset,
+void MCAsmStreamer::emitValueToOffset(const MCExpr *Offset,
unsigned char Value) {
// FIXME: Verify that Offset is associated with the current section.
OS << ".org ";
Offset->print(OS, MAI);
OS << ", " << (unsigned)Value;
EmitEOL();
- return false;
}
-
void MCAsmStreamer::EmitFileDirective(StringRef Filename) {
assert(MAI->hasSingleParameterDotFile());
OS << "\t.file\t";
@@ -1014,6 +1015,32 @@ void MCAsmStreamer::EmitCFIDefCfaOffset(int64_t Offset) {
EmitEOL();
}
+static void PrintCFIEscape(llvm::formatted_raw_ostream &OS, StringRef Values) {
+ OS << "\t.cfi_escape ";
+ if (!Values.empty()) {
+ size_t e = Values.size() - 1;
+ for (size_t i = 0; i < e; ++i)
+ OS << format("0x%02x", uint8_t(Values[i])) << ", ";
+ OS << format("0x%02x", uint8_t(Values[e]));
+ }
+}
+
+void MCAsmStreamer::EmitCFIEscape(StringRef Values) {
+ MCStreamer::EmitCFIEscape(Values);
+ PrintCFIEscape(OS, Values);
+ EmitEOL();
+}
+
+void MCAsmStreamer::EmitCFIGnuArgsSize(int64_t Size) {
+ MCStreamer::EmitCFIGnuArgsSize(Size);
+
+ uint8_t Buffer[16] = { dwarf::DW_CFA_GNU_args_size };
+ unsigned Len = encodeULEB128(Size, Buffer + 1) + 1;
+
+ PrintCFIEscape(OS, StringRef((const char *)&Buffer[0], Len));
+ EmitEOL();
+}
+
void MCAsmStreamer::EmitCFIDefCfaRegister(int64_t Register) {
MCStreamer::EmitCFIDefCfaRegister(Register);
OS << "\t.cfi_def_cfa_register ";
@@ -1203,7 +1230,7 @@ void MCAsmStreamer::EmitWinCFIPushFrame(bool Code) {
EmitEOL();
}
-void MCAsmStreamer::EmitWinCFIEndProlog(void) {
+void MCAsmStreamer::EmitWinCFIEndProlog() {
MCStreamer::EmitWinCFIEndProlog();
OS << "\t.seh_endprologue";
@@ -1217,7 +1244,6 @@ void MCAsmStreamer::AddEncodingComment(const MCInst &Inst,
SmallVector<MCFixup, 4> Fixups;
raw_svector_ostream VecOS(Code);
Emitter->encodeInstruction(Inst, VecOS, Fixups, STI);
- VecOS.flush();
// If we are showing fixups, create symbolic markers in the encoded
// representation. We do this by making a per-bit map to the fixup item index,
@@ -1334,6 +1360,19 @@ void MCAsmStreamer::EmitBundleUnlock() {
EmitEOL();
}
+bool MCAsmStreamer::EmitRelocDirective(const MCExpr &Offset, StringRef Name,
+ const MCExpr *Expr, SMLoc) {
+ OS << "\t.reloc ";
+ Offset.print(OS, MAI);
+ OS << ", " << Name;
+ if (Expr) {
+ OS << ", ";
+ Expr->print(OS, MAI);
+ }
+ EmitEOL();
+ return false;
+}
+
/// EmitRawText - If this file is backed by an assembly streamer, this dumps
/// the specified string in the output .s file. This capability is
/// indicated by the hasRawTextSupport() predicate.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 06:57:01 +0000