#include "X86Relocations.h"
#include "X86Subtarget.h"
#include "X86TargetMachine.h"
-#include "llvm/Function.h"
+#include "llvm/IR/Function.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Valgrind.h"
# define CFI(x)
#endif
-// Provide a wrapper for X86CompilationCallback2 that saves non-traditional
+// Provide a wrapper for LLVMX86CompilationCallback2 that saves non-traditional
// callee saved registers, for the fastcc calling convention.
extern "C" {
#if defined(X86_64_JIT)
"movaps %xmm6, 96(%rsp)\n"
"movaps %xmm7, 112(%rsp)\n"
// JIT callee
+#ifdef _WIN64
+ "subq $32, %rsp\n"
+ "movq %rbp, %rcx\n" // Pass prev frame and return address
+ "movq 8(%rbp), %rdx\n"
+ "call " ASMPREFIX "LLVMX86CompilationCallback2\n"
+ "addq $32, %rsp\n"
+#else
"movq %rbp, %rdi\n" // Pass prev frame and return address
"movq 8(%rbp), %rsi\n"
- "call " ASMPREFIX "X86CompilationCallback2\n"
+ "call " ASMPREFIX "LLVMX86CompilationCallback2\n"
+#endif
// Restore all XMM arg registers
"movaps 112(%rsp), %xmm7\n"
"movaps 96(%rsp), %xmm6\n"
"movl 4(%ebp), %eax\n" // Pass prev frame and return address
"movl %eax, 4(%esp)\n"
"movl %ebp, (%esp)\n"
- "call " ASMPREFIX "X86CompilationCallback2\n"
+ "call " ASMPREFIX "LLVMX86CompilationCallback2\n"
"movl %ebp, %esp\n" // Restore ESP
CFI(".cfi_def_cfa_register %esp\n")
"subl $12, %esp\n"
"movl 4(%ebp), %eax\n" // Pass prev frame and return address
"movl %eax, 4(%esp)\n"
"movl %ebp, (%esp)\n"
- "call " ASMPREFIX "X86CompilationCallback2\n"
+ "call " ASMPREFIX "LLVMX86CompilationCallback2\n"
"addl $16, %esp\n"
"movaps 48(%esp), %xmm3\n"
CFI(".cfi_restore %xmm3\n")
SIZE(X86CompilationCallback_SSE)
);
# else
- void X86CompilationCallback2(intptr_t *StackPtr, intptr_t RetAddr);
+ void LLVMX86CompilationCallback2(intptr_t *StackPtr, intptr_t RetAddr);
_declspec(naked) void X86CompilationCallback(void) {
__asm {
mov eax, dword ptr [ebp+4]
mov dword ptr [esp+4], eax
mov dword ptr [esp], ebp
- call X86CompilationCallback2
+ call LLVMX86CompilationCallback2
mov esp, ebp
sub esp, 12
pop ecx
#endif
}
-/// X86CompilationCallback2 - This is the target-specific function invoked by the
+/// This is the target-specific function invoked by the
/// function stub when we did not know the real target of a call. This function
/// must locate the start of the stub or call site and pass it into the JIT
/// compiler function.
extern "C" {
-#if !(defined (X86_64_JIT) && defined(_MSC_VER))
- // the following function is called only from this translation unit,
- // unless we are under 64bit Windows with MSC, where there is
- // no support for inline assembly
-static
-#endif
-void LLVM_ATTRIBUTE_USED
-X86CompilationCallback2(intptr_t *StackPtr, intptr_t RetAddr) {
+LLVM_LIBRARY_VISIBILITY void LLVMX86CompilationCallback2(intptr_t *StackPtr,
+ intptr_t RetAddr) {
intptr_t *RetAddrLoc = &StackPtr[1];
+ // We are reading raw stack data here. Tell MemorySanitizer that it is
+ // sufficiently initialized.
+ __msan_unpoison(RetAddrLoc, sizeof(*RetAddrLoc));
assert(*RetAddrLoc == RetAddr &&
"Could not find return address on the stack!");
TargetJITInfo::LazyResolverFn
X86JITInfo::getLazyResolverFunction(JITCompilerFn F) {
+ TsanIgnoreWritesBegin();
JITCompilerFunction = F;
+ TsanIgnoreWritesEnd();
#if defined (X86_32_JIT) && !defined (_MSC_VER)
if (Subtarget->hasSSE1())
// This used to use 0xCD, but that value is used by JITMemoryManager to
// initialize the buffer with garbage, which means it may follow a
- // noreturn function call, confusing X86CompilationCallback2. PR 4929.
+ // noreturn function call, confusing LLVMX86CompilationCallback2. PR 4929.
JCE.emitByte(0xCE); // Interrupt - Just a marker identifying the stub!
return Result;
}
#endif
}
+template<typename T> static void addUnaligned(void *Pos, T Delta) {
+ T Value;
+ std::memcpy(reinterpret_cast<char*>(&Value), reinterpret_cast<char*>(Pos),
+ sizeof(T));
+ Value += Delta;
+ std::memcpy(reinterpret_cast<char*>(Pos), reinterpret_cast<char*>(&Value),
+ sizeof(T));
+}
+
/// relocate - Before the JIT can run a block of code that has been emitted,
/// it must rewrite the code to contain the actual addresses of any
/// referenced global symbols.
// PC relative relocation, add the relocated value to the value already in
// memory, after we adjust it for where the PC is.
ResultPtr = ResultPtr -(intptr_t)RelocPos - 4 - MR->getConstantVal();
- *((unsigned*)RelocPos) += (unsigned)ResultPtr;
+ addUnaligned<unsigned>(RelocPos, ResultPtr);
break;
}
case X86::reloc_picrel_word: {
// PIC base relative relocation, add the relocated value to the value
// already in memory, after we adjust it for where the PIC base is.
ResultPtr = ResultPtr - ((intptr_t)Function + MR->getConstantVal());
- *((unsigned*)RelocPos) += (unsigned)ResultPtr;
+ addUnaligned<unsigned>(RelocPos, ResultPtr);
break;
}
case X86::reloc_absolute_word:
case X86::reloc_absolute_word_sext:
// Absolute relocation, just add the relocated value to the value already
// in memory.
- *((unsigned*)RelocPos) += (unsigned)ResultPtr;
+ addUnaligned<unsigned>(RelocPos, ResultPtr);
break;
case X86::reloc_absolute_dword:
- *((intptr_t*)RelocPos) += ResultPtr;
+ addUnaligned<intptr_t>(RelocPos, ResultPtr);
break;
}
}
return TLSOffset;
#else
llvm_unreachable("Cannot allocate thread local storage on this arch!");
- return 0;
#endif
}