org.graalvm.compiler.lir.asm

Interface FrameContext

public interface FrameContext

Code for managing a method's native frame.

Method Summary

Modifier and Type	Method and Description
void	enter(CompilationResultBuilder crb) Emits code common to all entry points of a method.
boolean	hasFrame() Determines if a frame is set up and torn down by this object.
void	leave(CompilationResultBuilder crb) Emits code to be executed just prior to returning from a method.
void	returned(CompilationResultBuilder crb) Allows the frame context to track the point at which a return has been generated.

Method Detail

enter

void enter(CompilationResultBuilder crb)

Emits code common to all entry points of a method. This may include:

• setting up the stack frame
• saving callee-saved registers
• stack overflow checking
• adding marks to identify the frame push

leave

void leave(CompilationResultBuilder crb)

Emits code to be executed just prior to returning from a method. This may include:

• restoring callee-saved registers
• performing a safepoint
• destroying the stack frame
• adding marks to identify the frame pop

returned

void returned(CompilationResultBuilder crb)

Allows the frame context to track the point at which a return has been generated. This callback is not intended to actually generate the return instruction itself. A legitimate action in response to this call may include:

• adding a mark to identify the end of an epilogue

hasFrame

boolean hasFrame()

Determines if a frame is set up and torn down by this object.