本文整理汇总了C++中AsmPrinter::emitInt16方法的典型用法代码示例。如果您正苦于以下问题：C++ AsmPrinter::emitInt16方法的具体用法？C++ AsmPrinter::emitInt16怎么用？C++ AsmPrinter::emitInt16使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类AsmPrinter的用法示例。
在下文中一共展示了AsmPrinter::emitInt16方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: finishAssembly
/// emitAssembly - Print the frametable. The ocaml frametable format is thus:
///
/// extern "C" struct align(sizeof(intptr_t)) {
/// uint16_t NumDescriptors;
/// struct align(sizeof(intptr_t)) {
/// void *ReturnAddress;
/// uint16_t FrameSize;
/// uint16_t NumLiveOffsets;
/// uint16_t LiveOffsets[NumLiveOffsets];
/// } Descriptors[NumDescriptors];
/// } caml${module}__frametable;
///
/// Note that this precludes programs from stack frames larger than 64K
/// (FrameSize and LiveOffsets would overflow). FrameTablePrinter will abort if
/// either condition is detected in a function which uses the GC.
///
void OcamlGCMetadataPrinter::finishAssembly(Module &M, GCModuleInfo &Info,
AsmPrinter &AP) {
unsigned IntPtrSize = M.getDataLayout().getPointerSize();
AP.OutStreamer->SwitchSection(AP.getObjFileLowering().getTextSection());
EmitCamlGlobal(M, AP, "code_end");
AP.OutStreamer->SwitchSection(AP.getObjFileLowering().getDataSection());
EmitCamlGlobal(M, AP, "data_end");
// FIXME: Why does ocaml emit this??
AP.OutStreamer->EmitIntValue(0, IntPtrSize);
AP.OutStreamer->SwitchSection(AP.getObjFileLowering().getDataSection());
EmitCamlGlobal(M, AP, "frametable");
int NumDescriptors = 0;
for (GCModuleInfo::FuncInfoVec::iterator I = Info.funcinfo_begin(),
IE = Info.funcinfo_end();
I != IE; ++I) {
GCFunctionInfo &FI = **I;
if (FI.getStrategy().getName() != getStrategy().getName())
// this function is managed by some other GC
continue;
for (GCFunctionInfo::iterator J = FI.begin(), JE = FI.end(); J != JE; ++J) {
NumDescriptors++;
}
}
if (NumDescriptors >= 1 << 16) {
// Very rude!
report_fatal_error(" Too much descriptor for ocaml GC");
}
AP.emitInt16(NumDescriptors);
AP.EmitAlignment(IntPtrSize == 4 ? 2 : 3);
for (GCModuleInfo::FuncInfoVec::iterator I = Info.funcinfo_begin(),
IE = Info.funcinfo_end();
I != IE; ++I) {
GCFunctionInfo &FI = **I;
if (FI.getStrategy().getName() != getStrategy().getName())
// this function is managed by some other GC
continue;
uint64_t FrameSize = FI.getFrameSize();
if (FrameSize >= 1 << 16) {
// Very rude!
report_fatal_error("Function '" + FI.getFunction().getName() +
"' is too large for the ocaml GC! "
"Frame size " +
Twine(FrameSize) + ">= 65536.\n"
"(" +
Twine(uintptr_t(&FI)) + ")");
}
AP.OutStreamer->AddComment("live roots for " +
Twine(FI.getFunction().getName()));
AP.OutStreamer->AddBlankLine();
for (GCFunctionInfo::iterator J = FI.begin(), JE = FI.end(); J != JE; ++J) {
size_t LiveCount = FI.live_size(J);
if (LiveCount >= 1 << 16) {
// Very rude!
report_fatal_error("Function '" + FI.getFunction().getName() +
"' is too large for the ocaml GC! "
"Live root count " +
Twine(LiveCount) + " >= 65536.");
}
AP.OutStreamer->EmitSymbolValue(J->Label, IntPtrSize);
AP.emitInt16(FrameSize);
AP.emitInt16(LiveCount);
for (GCFunctionInfo::live_iterator K = FI.live_begin(J),
KE = FI.live_end(J);
K != KE; ++K) {
if (K->StackOffset >= 1 << 16) {
// Very rude!
report_fatal_error(
"GC root stack offset is outside of fixed stack frame and out "
"of range for ocaml GC!");
}
AP.emitInt16(K->StackOffset);
}
//.........这里部分代码省略.........