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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** 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 mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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 ***** */
/* Platform specific code to invoke XPCOM methods on native objects */
#include "xptcprivate.h"
#ifndef WIN32
#error "This code is for Win32 only"
#endif
static void __fastcall
invoke_copy_to_stack(PRUint32* d, PRUint32 paramCount, nsXPTCVariant* s)
{
for(; paramCount > 0; paramCount--, d++, s++)
{
if(s->IsPtrData())
{
*((void**)d) = s->ptr;
continue;
}
switch(s->type)
{
case nsXPTType::T_I8 : *((PRInt8*) d) = s->val.i8; break;
case nsXPTType::T_I16 : *((PRInt16*) d) = s->val.i16; break;
case nsXPTType::T_I32 : *((PRInt32*) d) = s->val.i32; break;
case nsXPTType::T_I64 : *((PRInt64*) d) = s->val.i64; d++; break;
case nsXPTType::T_U8 : *((PRUint8*) d) = s->val.u8; break;
case nsXPTType::T_U16 : *((PRUint16*)d) = s->val.u16; break;
case nsXPTType::T_U32 : *((PRUint32*)d) = s->val.u32; break;
case nsXPTType::T_U64 : *((PRUint64*)d) = s->val.u64; d++; break;
case nsXPTType::T_FLOAT : *((float*) d) = s->val.f; break;
case nsXPTType::T_DOUBLE : *((double*) d) = s->val.d; d++; break;
case nsXPTType::T_BOOL : *((PRBool*) d) = s->val.b; break;
case nsXPTType::T_CHAR : *((char*) d) = s->val.c; break;
case nsXPTType::T_WCHAR : *((wchar_t*) d) = s->val.wc; break;
default:
// all the others are plain pointer types
*((void**)d) = s->val.p;
break;
}
}
}
#pragma warning(disable : 4035) // OK to have no return value
__declspec(naked) XPTC_PUBLIC_API(nsresult)
XPTC_InvokeByIndex(nsISupports* that, PRUint32 methodIndex,
PRUint32 paramCount, nsXPTCVariant* params)
{
__asm {
push ebp
mov ebp,esp
mov edx,paramCount // Save paramCount for later
test edx,edx // maybe we don't have any params to copy
jz noparams
mov eax,edx
shl eax,3 // *= 8 (max possible param size)
sub esp,eax // make space for params
mov ecx,esp
push params
call invoke_copy_to_stack // fastcall, ecx = d, edx = paramCount, params is on the stack
noparams:
mov ecx,that // instance in ecx
push ecx // push this
mov edx,[ecx] // vtable in edx
mov eax,methodIndex
call [edx][eax*4] // stdcall, i.e. callee cleans up stack.
mov esp,ebp
pop ebp
ret
}
}
#pragma warning(default : 4035) // restore default
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