#include "X86JITInfo.h"
#include "X86Relocations.h"
#include "X86Subtarget.h"
+#include "X86TargetMachine.h"
#include "llvm/Function.h"
-#include "llvm/Config/alloca.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/ErrorHandling.h"
#include <cstdlib>
using namespace llvm;
// Determine the platform we're running on
-#if defined (__x86_64__) || defined (_M_AMD64)
+#if defined (__x86_64__) || defined (_M_AMD64) || defined (_M_X64)
# define X86_64_JIT
#elif defined(__i386__) || defined(i386) || defined(_M_IX86)
# define X86_32_JIT
#define GETASMPREFIX(X) GETASMPREFIX2(X)
#define ASMPREFIX GETASMPREFIX(__USER_LABEL_PREFIX__)
-// Check if building with -fPIC
-#if defined(__PIC__) && __PIC__ && defined(__linux__)
-#define ASMCALLSUFFIX "@PLT"
-#else
-#define ASMCALLSUFFIX
-#endif
-
// For ELF targets, use a .size and .type directive, to let tools
// know the extent of functions defined in assembler.
#if defined(__ELF__)
// JIT callee
"movq %rbp, %rdi\n" // Pass prev frame and return address
"movq 8(%rbp), %rsi\n"
- "call " ASMPREFIX "X86CompilationCallback2" ASMCALLSUFFIX "\n"
+ "call " ASMPREFIX "X86CompilationCallback2\n"
// 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" ASMCALLSUFFIX "\n"
+ "call " ASMPREFIX "X86CompilationCallback2\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" ASMCALLSUFFIX "\n"
+ "call " ASMPREFIX "X86CompilationCallback2\n"
"addl $16, %esp\n"
"movaps 48(%esp), %xmm3\n"
CFI(".cfi_restore %xmm3\n")
#else // Not an i386 host
void X86CompilationCallback() {
- LLVM_UNREACHABLE("Cannot call X86CompilationCallback() on a non-x86 arch!\n");
+ llvm_unreachable("Cannot call X86CompilationCallback() on a non-x86 arch!");
}
#endif
}
/// 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" void ATTRIBUTE_USED
+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 ATTRIBUTE_USED
X86CompilationCallback2(intptr_t *StackPtr, intptr_t RetAddr) {
intptr_t *RetAddrLoc = &StackPtr[1];
assert(*RetAddrLoc == RetAddr &&
#endif
#if 0
- DOUT << "In callback! Addr=" << (void*)RetAddr
- << " ESP=" << (void*)StackPtr
- << ": Resolving call to function: "
- << TheVM->getFunctionReferencedName((void*)RetAddr) << "\n";
+ DEBUG(errs() << "In callback! Addr=" << (void*)RetAddr
+ << " ESP=" << (void*)StackPtr
+ << ": Resolving call to function: "
+ << TheVM->getFunctionReferencedName((void*)RetAddr) << "\n");
#endif
// Sanity check to make sure this really is a call instruction.
*RetAddrLoc -= 5;
#endif
}
+}
TargetJITInfo::LazyResolverFn
X86JITInfo::getLazyResolverFunction(JITCompilerFn F) {
JITCompilerFunction = F;
#if defined (X86_32_JIT) && !defined (_MSC_VER)
- unsigned EAX = 0, EBX = 0, ECX = 0, EDX = 0;
- union {
- unsigned u[3];
- char c[12];
- } text;
-
- if (!X86::GetCpuIDAndInfo(0, &EAX, text.u+0, text.u+2, text.u+1)) {
- // FIXME: support for AMD family of processors.
- if (memcmp(text.c, "GenuineIntel", 12) == 0) {
- X86::GetCpuIDAndInfo(0x1, &EAX, &EBX, &ECX, &EDX);
- if ((EDX >> 25) & 0x1)
- return X86CompilationCallback_SSE;
- }
- }
+ if (Subtarget->hasSSE1())
+ return X86CompilationCallback_SSE;
#endif
return X86CompilationCallback;
}
+X86JITInfo::X86JITInfo(X86TargetMachine &tm) : TM(tm) {
+ Subtarget = &TM.getSubtarget<X86Subtarget>();
+ useGOT = 0;
+ TLSOffset = 0;
+}
+
void *X86JITInfo::emitGlobalValueIndirectSym(const GlobalValue* GV, void *ptr,
JITCodeEmitter &JCE) {
#if defined (X86_64_JIT)
// complains about casting a function pointer to a normal pointer.
JCE.startGVStub(F, Stub, 5);
JCE.emitByte(0xE9);
-#if defined (X86_64_JIT)
- assert(((((intptr_t)Fn-JCE.getCurrentPCValue()-5) << 32) >> 32) ==
- ((intptr_t)Fn-JCE.getCurrentPCValue()-5)
+#if defined (X86_64_JIT) && !defined (NDEBUG)
+ // Yes, we need both of these casts, or some broken versions of GCC (4.2.4)
+ // get the signed-ness of the expression wrong. Go figure.
+ intptr_t Displacement = (intptr_t)Fn - (intptr_t)JCE.getCurrentPCValue() - 5;
+ assert(((Displacement << 32) >> 32) == Displacement
&& "PIC displacement does not fit in displacement field!");
#endif
JCE.emitWordLE((intptr_t)Fn-JCE.getCurrentPCValue()-4);
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;
TLSOffset -= size;
return TLSOffset;
#else
- LLVM_UNREACHABLE("Cannot allocate thread local storage on this arch!\n");
+ llvm_unreachable("Cannot allocate thread local storage on this arch!");
return 0;
#endif
}
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