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/**************************************************************************
*
* Copyright 2010 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
**************************************************************************/
#ifndef __STDC_LIMIT_MACROS
#define __STDC_LIMIT_MACROS
#endif
#ifndef __STDC_CONSTANT_MACROS
#define __STDC_CONSTANT_MACROS
#endif
#include <llvm-c/Core.h>
#include <llvm-c/ExecutionEngine.h>
#include <llvm/Target/TargetOptions.h>
#include <llvm/ExecutionEngine/ExecutionEngine.h>
#include <llvm/ExecutionEngine/JITEventListener.h>
#include <llvm/Support/CommandLine.h>
#include <llvm/Support/PrettyStackTrace.h>
#include "pipe/p_config.h"
#include "util/u_debug.h"
#if (defined(PIPE_OS_WINDOWS) && !defined(PIPE_CC_MSVC)) || defined(PIPE_OS_EMBDDED)
#include "llvm/Support/raw_ostream.h"
class raw_debug_ostream :
public llvm::raw_ostream
{
uint64_t pos;
void write_impl(const char *Ptr, size_t Size);
uint64_t current_pos() { return pos; }
uint64_t current_pos() const { return pos; }
#if HAVE_LLVM >= 0x207
uint64_t preferred_buffer_size() { return 512; }
#else
size_t preferred_buffer_size() { return 512; }
#endif
};
void
raw_debug_ostream::write_impl(const char *Ptr, size_t Size)
{
if (Size > 0) {
char *lastPtr = (char *)&Ptr[Size];
char last = *lastPtr;
*lastPtr = 0;
_debug_printf("%*s", Size, Ptr);
*lastPtr = last;
pos += Size;
}
}
/**
* Same as LLVMDumpValue, but through our debugging channels.
*/
extern "C" void
lp_debug_dump_value(LLVMValueRef value)
{
raw_debug_ostream os;
llvm::unwrap(value)->print(os);
os.flush();
}
#else
extern "C" void
lp_debug_dump_value(LLVMValueRef value)
{
LLVMDumpValue(value);
}
#endif
/**
* Register the engine with oprofile.
*
* This allows to see the LLVM IR function names in oprofile output.
*
* To actually work LLVM needs to be built with the --with-oprofile configure
* option.
*
* Also a oprofile:oprofile user:group is necessary. Which is not created by
* default on some distributions.
*/
extern "C" void
lp_register_oprofile_jit_event_listener(LLVMExecutionEngineRef EE)
{
llvm::unwrap(EE)->RegisterJITEventListener(llvm::createOProfileJITEventListener());
}
extern "C" void
lp_set_target_options(void)
{
#if defined(DEBUG)
#if HAVE_LLVM >= 0x0207
llvm::JITEmitDebugInfo = true;
#endif
#endif
#if defined(DEBUG) || defined(PROFILE)
llvm::NoFramePointerElim = true;
#endif
llvm::NoExcessFPPrecision = false;
/* XXX: Investigate this */
#if 0
llvm::UnsafeFPMath = true;
#endif
/*
* LLVM will generate MMX instructions for vectors <= 64 bits, leading to
* innefficient code, and in 32bit systems, to the corruption of the FPU
* stack given that it expects the user to generate the EMMS instructions.
*
* See also:
* - http://llvm.org/bugs/show_bug.cgi?id=3287
* - http://l4.me.uk/post/2009/06/07/llvm-wrinkle-3-configuration-what-configuration/
*/
static boolean first = TRUE;
if (first) {
static const char* options[] = {
"prog",
"-disable-mmx"
};
llvm::cl::ParseCommandLineOptions(2, const_cast<char**>(options));
first = FALSE;
}
/*
* By default LLVM adds a signal handler to output a pretty stack trace.
* This signal handler is never removed, causing problems when unloading the
* shared object where the gallium driver resides.
*/
llvm::DisablePrettyStackTrace = true;
}
extern "C" void
lp_func_delete_body(LLVMValueRef FF)
{
llvm::Function *func = llvm::unwrap<llvm::Function>(FF);
func->deleteBody();
}
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