summaryrefslogtreecommitdiffstats
path: root/tools/lli/ChildTarget/Unix/ChildTarget.inc
diff options
context:
space:
mode:
Diffstat (limited to 'tools/lli/ChildTarget/Unix/ChildTarget.inc')
-rw-r--r--tools/lli/ChildTarget/Unix/ChildTarget.inc166
1 files changed, 0 insertions, 166 deletions
diff --git a/tools/lli/ChildTarget/Unix/ChildTarget.inc b/tools/lli/ChildTarget/Unix/ChildTarget.inc
deleted file mode 100644
index cc95810..0000000
--- a/tools/lli/ChildTarget/Unix/ChildTarget.inc
+++ /dev/null
@@ -1,166 +0,0 @@
-//===- ChildTarget.inc - Child process for external JIT execution for Unix -==//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// Implementation of the Unix-specific parts of the ChildTarget class
-// which executes JITed code in a separate process from where it was built.
-//
-//===----------------------------------------------------------------------===//
-
-#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#ifdef HAVE_SYS_MMAN_H
-#include <sys/mman.h>
-#endif
-
-#ifdef __APPLE__
-#include <mach/mach.h>
-#endif
-
-#if defined(__mips__)
-# if defined(__OpenBSD__)
-# include <mips64/sysarch.h>
-# else
-# include <sys/cachectl.h>
-# endif
-#endif
-
-#ifdef __APPLE__
-extern "C" void sys_icache_invalidate(const void *Addr, size_t len);
-#else
-extern "C" void __clear_cache(void *, void*);
-#endif
-
-namespace {
-
-struct ConnectionData_t {
- int InputPipe;
- int OutputPipe;
-
- ConnectionData_t(int in, int out) : InputPipe(in), OutputPipe(out) {}
-};
-
-} // namespace
-
-LLIChildTarget::~LLIChildTarget() {
- delete static_cast<ConnectionData_t *>(ConnectionData);
-}
-
-// OS-specific methods
-void LLIChildTarget::initializeConnection() {
- // Store the parent ends of the pipes
- ConnectionData = (void*)new ConnectionData_t(STDIN_FILENO, STDOUT_FILENO);
-}
-
-int LLIChildTarget::WriteBytes(const void *Data, size_t Size) {
- return write(((ConnectionData_t*)ConnectionData)->OutputPipe, Data, Size);
-}
-
-int LLIChildTarget::ReadBytes(void *Data, size_t Size) {
- return read(((ConnectionData_t*)ConnectionData)->InputPipe, Data, Size);
-}
-
-// The functions below duplicate functionality that is implemented in
-// Support/Memory.cpp with the goal of avoiding a dependency on any
-// llvm libraries.
-
-uint64_t LLIChildTarget::allocate(uint32_t Alignment, uint32_t Size) {
- if (!Alignment)
- Alignment = 16;
-
- static const size_t PageSize = getpagesize();
- const size_t NumPages = (Size+PageSize-1)/PageSize;
- Size = NumPages*PageSize;
-
- int fd = -1;
-#ifdef NEED_DEV_ZERO_FOR_MMAP
- static int zero_fd = open("/dev/zero", O_RDWR);
- if (zero_fd == -1)
- return 0;
- fd = zero_fd;
-#endif
-
- int MMFlags = MAP_PRIVATE |
-#ifdef HAVE_MMAP_ANONYMOUS
- MAP_ANONYMOUS
-#else
- MAP_ANON
-#endif
- ; // Ends statement above
-
- uint64_t Addr = (uint64_t)::mmap(0, Size, PROT_READ | PROT_WRITE, MMFlags, fd, 0);
- if (Addr == (uint64_t)MAP_FAILED)
- return 0;
-
- // Align the address.
- Addr = (Addr + Alignment - 1) & ~(uintptr_t)(Alignment - 1);
-
- m_AllocatedBufferMap[Addr] = Size;
-
- // Return aligned address
- return Addr;
-}
-
-void LLIChildTarget::makeSectionExecutable(uint64_t Addr, uint32_t Size) {
- // FIXME: We have to mark the memory as RWX because multiple code chunks may
- // be on the same page. The RemoteTarget interface should be changed to
- // work around that.
- int Result = ::mprotect((void*)Addr, Size, PROT_READ | PROT_WRITE | PROT_EXEC);
- if (Result != 0)
- InvalidateInstructionCache((const void *)Addr, Size);
-}
-
-/// InvalidateInstructionCache - Before the JIT can run a block of code
-/// that has been emitted it must invalidate the instruction cache on some
-/// platforms.
-void LLIChildTarget::InvalidateInstructionCache(const void *Addr,
- size_t Len) {
-
-// icache invalidation for PPC and ARM.
-#if defined(__APPLE__)
-
-# if (defined(__POWERPC__) || defined (__ppc__) || \
- defined(_POWER) || defined(_ARCH_PPC)) || defined(__arm__)
- sys_icache_invalidate(const_cast<void *>(Addr), Len);
-# endif
-
-#else
-
-# if (defined(__POWERPC__) || defined (__ppc__) || \
- defined(_POWER) || defined(_ARCH_PPC)) && defined(__GNUC__)
- const size_t LineSize = 32;
-
- const intptr_t Mask = ~(LineSize - 1);
- const intptr_t StartLine = ((intptr_t) Addr) & Mask;
- const intptr_t EndLine = ((intptr_t) Addr + Len + LineSize - 1) & Mask;
-
- for (intptr_t Line = StartLine; Line < EndLine; Line += LineSize)
- asm volatile("dcbf 0, %0" : : "r"(Line));
- asm volatile("sync");
-
- for (intptr_t Line = StartLine; Line < EndLine; Line += LineSize)
- asm volatile("icbi 0, %0" : : "r"(Line));
- asm volatile("isync");
-# elif defined(__arm__) && defined(__GNUC__)
- // FIXME: Can we safely always call this for __GNUC__ everywhere?
- const char *Start = static_cast<const char *>(Addr);
- const char *End = Start + Len;
- __clear_cache(const_cast<char *>(Start), const_cast<char *>(End));
-# elif defined(__mips__)
- const char *Start = static_cast<const char *>(Addr);
- cacheflush(const_cast<char *>(Start), Len, BCACHE);
-# endif
-
-#endif // end apple
-}
-
-void LLIChildTarget::releaseMemory(uint64_t Addr, uint32_t Size) {
- ::munmap((void*)Addr, Size);
-}