| /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| /* ***** BEGIN LICENSE BLOCK ***** |
| * Version: MPL 1.1/GPL 2.0/LGPL 2.1 |
| * |
| * The contents of this file are subject to the Mozilla Public License Version |
| * 1.1 (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * http://www.mozilla.org/MPL/ |
| * |
| * Software distributed under the License is distributed on an "AS IS" basis, |
| * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License |
| * for the specific language governing rights and limitations under the |
| * License. |
| * |
| * The Original Code is the Netscape Portable Runtime (NSPR). |
| * |
| * The Initial Developer of the Original Code is |
| * Netscape Communications Corporation. |
| * Portions created by the Initial Developer are Copyright (C) 1998-2000 |
| * the Initial Developer. All Rights Reserved. |
| * |
| * Contributor(s): |
| * |
| * Alternatively, the contents of this file may be used under the terms of |
| * either the GNU General Public License Version 2 or later (the "GPL"), or |
| * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), |
| * in which case the provisions of the GPL or the LGPL are applicable instead |
| * of those above. If you wish to allow use of your version of this file only |
| * under the terms of either the GPL or the LGPL, and not to allow others to |
| * use your version of this file under the terms of the MPL, indicate your |
| * decision by deleting the provisions above and replace them with the notice |
| * and other provisions required by the GPL or the LGPL. If you do not delete |
| * the provisions above, a recipient may use your version of this file under |
| * the terms of any one of the MPL, the GPL or the LGPL. |
| * |
| * ***** END LICENSE BLOCK ***** */ |
| |
| /* |
| * GC related routines |
| * |
| */ |
| #include "primpl.h" |
| |
| PRWord *_MD_HomeGCRegisters(PRThread *t, int isCurrent, int *np) |
| { |
| CONTEXTRECORD context; |
| context.ContextFlags = CONTEXT_INTEGER; |
| |
| if (_PR_IS_NATIVE_THREAD(t)) { |
| context.ContextFlags |= CONTEXT_CONTROL; |
| if (QueryThreadContext(t->md.handle, CONTEXT_CONTROL, &context)) { |
| t->md.gcContext[0] = context.ctx_RegEax; |
| t->md.gcContext[1] = context.ctx_RegEbx; |
| t->md.gcContext[2] = context.ctx_RegEcx; |
| t->md.gcContext[3] = context.ctx_RegEdx; |
| t->md.gcContext[4] = context.ctx_RegEsi; |
| t->md.gcContext[5] = context.ctx_RegEdi; |
| t->md.gcContext[6] = context.ctx_RegEsp; |
| t->md.gcContext[7] = context.ctx_RegEbp; |
| *np = PR_NUM_GCREGS; |
| } else { |
| PR_ASSERT(0);/* XXX */ |
| } |
| } |
| return (PRWord *)&t->md.gcContext; |
| } |
| |
| /* This function is not used right now, but is left as a reference. |
| * If you ever need to get the fiberID from the currently running fiber, |
| * this is it. |
| */ |
| void * |
| GetMyFiberID() |
| { |
| void *fiberData = 0; |
| |
| /* A pointer to our tib entry is found at FS:[18] |
| * At offset 10h is the fiberData pointer. The context of the |
| * fiber is stored in there. |
| */ |
| #ifdef HAVE_ASM |
| __asm { |
| mov EDX, FS:[18h] |
| mov EAX, DWORD PTR [EDX+10h] |
| mov [fiberData], EAX |
| } |
| #endif |
| |
| return fiberData; |
| } |