/
func-prologue.cpp
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/
func-prologue.cpp
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/*
+----------------------------------------------------------------------+
| HipHop for PHP |
+----------------------------------------------------------------------+
| Copyright (c) 2010-2016 Facebook, Inc. (http://www.facebook.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
*/
#include "hphp/runtime/vm/jit/func-prologue.h"
#include "hphp/runtime/base/arch.h"
#include "hphp/runtime/vm/func.h"
#include "hphp/runtime/vm/srckey.h"
#include "hphp/runtime/vm/jit/types.h"
#include "hphp/runtime/vm/jit/code-gen-helpers.h"
#include "hphp/runtime/vm/jit/func-guard.h"
#include "hphp/runtime/vm/jit/irgen.h"
#include "hphp/runtime/vm/jit/irgen-func-prologue.h"
#include "hphp/runtime/vm/jit/irlower.h"
#include "hphp/runtime/vm/jit/mc-generator.h"
#include "hphp/runtime/vm/jit/phys-reg.h"
#include "hphp/runtime/vm/jit/relocation.h"
#include "hphp/runtime/vm/jit/srcdb.h"
#include "hphp/runtime/vm/jit/translator.h"
#include "hphp/runtime/vm/jit/unique-stubs.h"
#include "hphp/runtime/vm/jit/vasm.h"
#include "hphp/runtime/vm/jit/vasm-instr.h"
#include "hphp/util/asm-x64.h"
#include "hphp/util/code-cache.h"
#include "hphp/util/data-block.h"
#include "hphp/util/growable-vector.h"
#include "hphp/util/immed.h"
namespace HPHP { namespace jit {
///////////////////////////////////////////////////////////////////////////////
namespace {
///////////////////////////////////////////////////////////////////////////////
TransContext prologue_context(TransID transID,
TransKind kind,
const Func* func,
Offset entry) {
return TransContext(
transID,
kind,
SrcKey{func, entry, SrcKey::PrologueTag{}},
FPInvOffset{func->numSlotsInFrame()}
);
}
///////////////////////////////////////////////////////////////////////////////
}
///////////////////////////////////////////////////////////////////////////////
TCA genFuncPrologue(TransID transID, TransKind kind, Func* func, int argc) {
auto context = prologue_context(transID, kind, func,
func->getEntryForNumArgs(argc));
IRGS env{context, TransFlags{}};
auto& cb = mcg->code.main();
// Dump the func guard in the TC before anything else.
emitFuncGuard(func, cb);
auto const start = cb.frontier();
irgen::emitFuncPrologue(env, argc, transID);
irgen::sealUnit(env);
irlower::genCode(env.unit, CodeKind::CrossTrace);
return start;
}
TCA genFuncBodyDispatch(Func* func, const DVFuncletsVec& dvs) {
auto context = prologue_context(kInvalidTransID, TransKind::Live,
func, func->base());
IRGS env{context, TransFlags{}};
assertx(mcg->cgFixups().empty());
auto& main = mcg->code.main();
auto& frozen = mcg->code.frozen();
auto const start = main.frontier();
irgen::emitFuncBodyDispatch(env, dvs);
irgen::sealUnit(env);
irlower::genCode(env.unit, CodeKind::CrossTrace);
if (RuntimeOption::EvalPerfRelocate) {
GrowableVector<IncomingBranch> ibs;
recordPerfRelocMap(start, main.frontier(),
frozen.frontier(), frozen.frontier(),
SrcKey { func, dvs[0].second, false },
0, ibs, mcg->cgFixups());
}
mcg->cgFixups().process(nullptr);
return start;
}
///////////////////////////////////////////////////////////////////////////////
}}