llvm::orc::OrcI386 Class Reference

I386 support. More...

#include "llvm/ExecutionEngine/Orc/OrcABISupport.h"

Collaboration diagram for llvm::orc::OrcI386:

Static Public Member Functions
static void	writeResolverCode (char *ResolverWorkingMem, JITTargetAddress ResolverTargetAddress, JITTargetAddress ReentryFnAddr, JITTargetAddress ReentryCtxAddr)
	Write the resolver code into the given memory. More...
static void	writeTrampolines (char *TrampolineBlockWorkingMem, JITTargetAddress TrampolineBlockTargetAddress, JITTargetAddress ResolverAddr, unsigned NumTrampolines)
	Write the requested number of trampolines into the given memory, which must be big enough to hold 1 pointer, plus NumTrampolines trampolines. More...
static void	writeIndirectStubsBlock (char *StubsBlockWorkingMem, JITTargetAddress StubsBlockTargetAddress, JITTargetAddress PointersBlockTargetAddress, unsigned NumStubs)
	Write NumStubs indirect stubs to working memory at StubsBlockWorkingMem. More...

Static Public Attributes
static constexpr unsigned	PointerSize = 4
static constexpr unsigned	TrampolineSize = 8
static constexpr unsigned	StubSize = 8
static constexpr unsigned	StubToPointerMaxDisplacement = 1 << 31
static constexpr unsigned	ResolverCodeSize = 0x4a

Detailed Description

I386 support.

I386 supports lazy JITing.

Definition at line 195 of file OrcABISupport.h.

Member Function Documentation

writeIndirectStubsBlock()

void llvm::orc::OrcI386::writeIndirectStubsBlock ( char *  StubsBlockWorkingMem, JITTargetAddress  StubsBlockTargetAddress, JITTargetAddress  PointersBlockTargetAddress, unsigned  NumStubs  )

static

Write NumStubs indirect stubs to working memory at StubsBlockWorkingMem.

Stubs will be written as if linked at StubsBlockTargetAddress, with the Nth stub using the Nth pointer in memory starting at PointersBlockTargetAddress.

Definition at line 471 of file OrcABISupport.cpp.

References assert(), and I.

writeResolverCode()

void llvm::orc::OrcI386::writeResolverCode ( char *  ResolverWorkingMem, JITTargetAddress  ResolverTargetAddress, JITTargetAddress  ReentryFnAddr, JITTargetAddress  ReentryCtxAddr  )

static

Write the resolver code into the given memory.

The user is responsible for allocating the memory and setting permissions.

ReentryFnAddr should be the address of a function whose signature matches void* (*)(void *TrampolineAddr, void *ReentryCtxAddr). The ReentryCtxAddr argument of writeResolverCode will be passed as the second argument to the function at ReentryFnAddr.

Definition at line 404 of file OrcABISupport.cpp.

References assert(), and memcpy().

writeTrampolines()

void llvm::orc::OrcI386::writeTrampolines ( char *  TrampolineBlockWorkingMem, JITTargetAddress  TrampolineBlockTargetAddress, JITTargetAddress  ResolverAddr, unsigned  NumTrampolines  )

static

Write the requested number of trampolines into the given memory, which must be big enough to hold 1 pointer, plus NumTrampolines trampolines.

Definition at line 457 of file OrcABISupport.cpp.

References assert(), I, and TrampolineSize.

Member Data Documentation

PointerSize

constexpr unsigned llvm::orc::OrcI386::PointerSize = 4

staticconstexpr

Definition at line 197 of file OrcABISupport.h.

ResolverCodeSize

constexpr unsigned llvm::orc::OrcI386::ResolverCodeSize = 0x4a

staticconstexpr

Definition at line 201 of file OrcABISupport.h.

StubSize

constexpr unsigned llvm::orc::OrcI386::StubSize = 8

staticconstexpr

Definition at line 199 of file OrcABISupport.h.

StubToPointerMaxDisplacement

constexpr unsigned llvm::orc::OrcI386::StubToPointerMaxDisplacement = 1 << 31

staticconstexpr

Definition at line 200 of file OrcABISupport.h.

TrampolineSize

constexpr unsigned llvm::orc::OrcI386::TrampolineSize = 8

staticconstexpr

Definition at line 198 of file OrcABISupport.h.

Referenced by writeTrampolines().

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The documentation for this class was generated from the following files:

• include/llvm/ExecutionEngine/Orc/OrcABISupport.h
• lib/ExecutionEngine/Orc/OrcABISupport.cpp