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Add registry hook for assembly text output

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118394 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Che-Liang Chiou
2010-11-08 02:21:17 +00:00
parent 5991487c10
commit 6da24ca51d
3 changed files with 59 additions and 8 deletions
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52
include/llvm/Target/TargetRegistry.h
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@@ -39,6 +39,13 @@ namespace llvm {
class TargetAsmParser;
class TargetMachine;
class raw_ostream;
class formatted_raw_ostream;
MCStreamer *createAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
bool isLittleEndian, bool isVerboseAsm,
MCInstPrinter *InstPrint,
MCCodeEmitter *CE,
bool ShowInst);
/// Target - Wrapper for Target specific information.
///
@@ -81,6 +88,13 @@ namespace llvm {
raw_ostream &_OS,
MCCodeEmitter *_Emitter,
bool RelaxAll);
typedef MCStreamer *(*AsmStreamerCtorTy)(MCContext &Ctx,
formatted_raw_ostream &OS,
bool isLittleEndian,
bool isVerboseAsm,
MCInstPrinter *InstPrint,
MCCodeEmitter *CE,
bool ShowInst);
private:
/// Next - The next registered target in the linked list, maintained by the
@@ -138,7 +152,13 @@ namespace llvm {
/// ObjectStreamer, if registered.
ObjectStreamerCtorTy ObjectStreamerCtorFn;
/// AsmStreamerCtorFn - Construction function for this target's
/// AsmStreamer, if registered (default = llvm::createAsmStreamer).
AsmStreamerCtorTy AsmStreamerCtorFn;
public:
Target() : AsmStreamerCtorFn(llvm::createAsmStreamer) {}
/// @name Target Information
/// @{
@@ -185,6 +205,9 @@ namespace llvm {
/// hasObjectStreamer - Check if this target supports streaming to files.
bool hasObjectStreamer() const { return ObjectStreamerCtorFn != 0; }
/// hasAsmStreamer - Check if this target supports streaming to files.
bool hasAsmStreamer() const { return AsmStreamerCtorFn != 0; }
/// @}
/// @name Feature Constructors
/// @{
@@ -292,6 +315,19 @@ namespace llvm {
return ObjectStreamerCtorFn(*this, TT, Ctx, TAB, _OS, _Emitter, RelaxAll);
}
/// createAsmStreamer - Create a target specific MCStreamer.
MCStreamer *createAsmStreamer(MCContext &Ctx,
formatted_raw_ostream &OS,
bool isLittleEndian,
bool isVerboseAsm,
MCInstPrinter *InstPrint,
MCCodeEmitter *CE,
bool ShowInst) const {
// AsmStreamerCtorFn is default to llvm::createAsmStreamer
return AsmStreamerCtorFn(Ctx, OS, isLittleEndian, isVerboseAsm,
InstPrint, CE, ShowInst);
}
/// @}
};
@@ -513,7 +549,7 @@ namespace llvm {
T.CodeEmitterCtorFn = Fn;
}
/// RegisterObjectStreamer - Register an MCStreamer implementation
/// RegisterObjectStreamer - Register a object code MCStreamer implementation
/// for the given target.
///
/// Clients are responsible for ensuring that registration doesn't occur
@@ -527,6 +563,20 @@ namespace llvm {
T.ObjectStreamerCtorFn = Fn;
}
/// RegisterAsmStreamer - Register an assembly MCStreamer implementation
/// for the given target.
///
/// Clients are responsible for ensuring that registration doesn't occur
/// while another thread is attempting to access the registry. Typically
/// this is done by initializing all targets at program startup.
///
/// @param T - The target being registered.
/// @param Fn - A function to construct an MCStreamer for the target.
static void RegisterAsmStreamer(Target &T, Target::AsmStreamerCtorTy Fn) {
if (T.AsmStreamerCtorFn == createAsmStreamer)
T.AsmStreamerCtorFn = Fn;
}
/// @}
};