mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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218 lines
5.8 KiB
C++
218 lines
5.8 KiB
C++
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=8 sw=4 et tw=79:
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla SpiderMonkey JavaScript 1.9 code, released
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* May 28, 2008.
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*
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* The Initial Developer of the Original Code is
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* Brendan Eich <brendan@mozilla.org
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#define jstracer_cpp___
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#include "nanojit/avmplus.h"
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#include "nanojit/nanojit.h"
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using namespace nanojit;
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#include "jsinterp.cpp"
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Tracker::Tracker()
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{
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pagelist = 0;
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}
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Tracker::~Tracker()
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{
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clear();
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}
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long
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Tracker::getPageBase(const void* v) const
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{
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return ((long)v) & (~(NJ_PAGE_SIZE-1));
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}
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struct Tracker::Page*
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Tracker::findPage(const void* v) const
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{
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long base = getPageBase(v);
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struct Tracker::Page* p = pagelist;
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while (p) {
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if (p->base == base)
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return p;
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p = p->next;
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}
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return 0;
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}
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struct Tracker::Page*
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Tracker::addPage(const void* v) {
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long base = getPageBase(v);
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struct Tracker::Page* p = (struct Tracker::Page*)
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GC::Alloc(sizeof(struct Tracker::Page) + (NJ_PAGE_SIZE >> 2) * sizeof(LInsp));
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p->base = base;
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p->next = pagelist;
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pagelist = p;
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return p;
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}
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void
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Tracker::clear()
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{
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while (pagelist) {
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Page* p = pagelist;
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pagelist = pagelist->next;
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GC::Free(p);
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}
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}
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LIns*
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Tracker::get(const void* v) const
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{
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struct Tracker::Page* p = findPage(v);
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JS_ASSERT(p != 0); /* we must have a page for the slot we are looking for */
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LIns* i = p->map[(((long)v) & 0xfff) >> 2];
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JS_ASSERT(i != 0);
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#ifdef DEBUG
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//printf("get %p, which is %s\n",v, nanojit::lirNames[i->opcode()]);
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#endif
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return i;
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}
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void
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Tracker::set(const void* v, LIns* ins)
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{
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#ifdef DEBUG
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//printf("set %p to %s\n", v, nanojit::lirNames[ins->opcode()]);
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#endif
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struct Tracker::Page* p = findPage(v);
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if (!p)
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p = addPage(v);
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p->map[(((long)v) & 0xfff) >> 2] = ins;
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}
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using namespace avmplus;
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using namespace nanojit;
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static avmplus::AvmCore* core = new avmplus::AvmCore();
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static GC gc = GC();
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#define LO ARGSIZE_LO
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#define F ARGSIZE_F
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#define Q ARGSIZE_Q
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#ifdef DEBUG
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#define NAME(op) ,#op
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#else
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#define NAME(op)
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#endif
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#define BUILTIN1(op, at0, atr, tr, t0, cse, fold) \
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{ 0, (at0 | (atr << 2)), cse, fold NAME(op) },
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#define BUILTIN2(op, at0, at1, atr, tr, t0, t1, cse, fold) \
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{ 0, (at0 | (at1 << 2) | (atr << 4)), cse, fold NAME(op) },
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#define BUILTIN3(op, at0, at1, at2, atr, tr, t0, t1, t2, cse, fold) \
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{ 0, (at0 | (at1 << 2) | (at2 << 4) | (atr << 6)), cse, fold NAME(op) },
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static struct CallInfo builtins[] = {
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#include "builtins.tbl"
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};
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#undef NAME
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#undef BUILTIN1
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#undef BUILTIN2
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#undef BUILTIN3
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void
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js_StartRecording(JSContext* cx, JSFrameRegs& regs)
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{
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JSTraceMonitor* tm = &JS_TRACE_MONITOR(cx);
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if (!tm->fragmento) {
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Fragmento* fragmento = new (&gc) Fragmento(core);
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#ifdef DEBUG
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fragmento->labels = new (&gc) LabelMap(core, NULL);
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#endif
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fragmento->assm()->setCallTable(builtins);
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tm->fragmento = fragmento;
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}
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memcpy(&tm->entryState, ®s, sizeof(regs));
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InterpState state;
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state.ip = NULL;
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state.sp = NULL;
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state.rp = NULL;
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state.f = NULL;
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Fragment* fragment = tm->fragmento->getLoop(state);
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LirBuffer* lirbuf = new (&gc) LirBuffer(tm->fragmento, builtins);
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#ifdef DEBUG
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lirbuf->names = new (&gc) LirNameMap(&gc, builtins, tm->fragmento->labels);
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#endif
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fragment->lirbuf = lirbuf;
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LirWriter* lir = new (&gc) LirBufWriter(lirbuf);
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lir->ins0(LIR_trace);
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fragment->param0 = lir->insImm8(LIR_param, Assembler::argRegs[0], 0);
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fragment->param1 = lir->insImm8(LIR_param, Assembler::argRegs[1], 0);
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JSStackFrame* fp = cx->fp;
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tm->tracker.set(cx, fragment->param0);
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#define LOAD_CONTEXT(p) \
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tm->tracker.set(p, lir->insLoadi(fragment->param1, STACK_OFFSET(p)))
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unsigned n;
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for (n = 0; n < fp->argc; ++n)
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LOAD_CONTEXT(&fp->argv[n]);
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for (n = 0; n < fp->nvars; ++n)
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LOAD_CONTEXT(&fp->vars[n]);
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for (n = 0; n < (unsigned)(regs.sp - fp->spbase); ++n)
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LOAD_CONTEXT(&fp->spbase[n]);
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tm->fragment = fragment;
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tm->lir = lir;
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tm->status = RECORDING;
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}
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void
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js_EndRecording(JSContext* cx, JSFrameRegs& regs)
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{
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JSTraceMonitor* tm = &JS_TRACE_MONITOR(cx);
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if (tm->status == RECORDING) {
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tm->fragment->lastIns = tm->lir->ins0(LIR_loop);
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compile(tm->fragmento->assm(), tm->fragment);
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}
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tm->status = IDLE;
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}
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