struct MCDwarfFrameInfo {
MCDwarfFrameInfo()
: Begin(nullptr), End(nullptr), Personality(nullptr), Lsda(nullptr),
- Function(nullptr), Instructions(), PersonalityEncoding(),
- LsdaEncoding(0), CompactUnwindEncoding(0), IsSignalFrame(false),
- IsSimple(false) {}
+ Instructions(), PersonalityEncoding(), LsdaEncoding(0),
+ CompactUnwindEncoding(0), IsSignalFrame(false), IsSimple(false) {}
MCSymbol *Begin;
MCSymbol *End;
const MCSymbol *Personality;
const MCSymbol *Lsda;
- const MCSymbol *Function;
std::vector<MCCFIInstruction> Instructions;
unsigned PersonalityEncoding;
unsigned LsdaEncoding;
void setCurrentW64UnwindInfo(MCWin64EHUnwindInfo *Frame);
void EnsureValidW64UnwindInfo();
- MCSymbol *LastSymbol;
-
// SymbolOrdering - Tracks an index to represent the order
// a symbol was emitted in. Zero means we did not emit that symbol.
DenseMap<const MCSymbol *, unsigned> SymbolOrdering;
unsigned FDEEncoding = MOFI->getFDEEncoding();
unsigned Size = getSizeForEncoding(Streamer, FDEEncoding);
if (VerboseAsm) Streamer.AddComment("Range Start");
- Streamer.EmitSymbolValue(Frame.Function, Size);
+ Streamer.EmitSymbolValue(Frame.Begin, Size);
// Range Length
const MCExpr *Range = MakeStartMinusEndExpr(Streamer, *Frame.Begin,
void MCTargetStreamer::emitAssignment(MCSymbol *Symbol, const MCExpr *Value) {}
MCStreamer::MCStreamer(MCContext &Ctx)
- : Context(Ctx), CurrentW64UnwindInfo(nullptr), LastSymbol(nullptr) {
+ : Context(Ctx), CurrentW64UnwindInfo(nullptr) {
SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
}
delete W64UnwindInfos[i];
W64UnwindInfos.clear();
CurrentW64UnwindInfo = nullptr;
- LastSymbol = nullptr;
SectionStack.clear();
SectionStack.push_back(std::pair<MCSectionSubPair, MCSectionSubPair>());
}
assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
assert(getCurrentSection().first && "Cannot emit before setting section!");
AssignSection(Symbol, getCurrentSection().first);
- LastSymbol = Symbol;
MCTargetStreamer *TS = getTargetStreamer();
if (TS)
assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
assert(getCurrentSection().first && "Cannot emit before setting section!");
AssignSection(Symbol, getCurrentSection().first);
- LastSymbol = Symbol;
}
void MCStreamer::EmitCompactUnwindEncoding(uint32_t CompactUnwindEncoding) {
}
void MCStreamer::RecordProcStart(MCDwarfFrameInfo &Frame) {
- // Report an error if we haven't seen a symbol yet where we'd bind
- // .cfi_startproc.
- if (!LastSymbol)
- report_fatal_error("No symbol to start a frame");
- Frame.Function = LastSymbol;
// We need to create a local symbol to avoid relocations.
Frame.Begin = getContext().CreateTempSymbol();
EmitLabel(Frame.Begin);
+++ /dev/null
-# RUN: not llvm-mc -triple=x86_64-apple-macosx10.8 -filetype=obj -o %t %s 2>&1 | FileCheck %s
-# Check that the cfi_startproc is declared after the beginning of
-# a procedure, otherwise it will reference an invalid symbol for
-# emitting the relocation.
-# <rdar://problem/15939159>
-
-# CHECK: No symbol to start a frame
-.text
-.cfi_startproc
-.globl _someFunction
-_someFunction:
-.cfi_def_cfa_offset 16
-.cfi_offset %rbp, -16
-.cfi_def_cfa_register rbp
- ret
-.cfi_endproc
--- /dev/null
+// RUN: llvm-mc -triple x86_64-pc-linux-gnu %s -filetype=obj -o - | llvm-readobj -r | FileCheck %s
+
+// Test that we can use .cfi_startproc without a global symbol.
+
+.text
+.space 1000
+.cfi_startproc
+ .cfi_endproc
+
+// CHECK: Relocations [
+// CHECK-NEXT: Section (5) .rela.eh_frame {
+// CHECK-NEXT: 0x20 R_X86_64_PC32 .text 0x3E8
+// CHECK-NEXT: }
+// CHECK-NEXT: ]