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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"
// Remember that these 'words' are 32bit DWORDS
extern "C" {
static PRUint32
invoke_count_words(PRUint32 paramCount, nsXPTCVariant* s)
{
PRUint32 result = 0;
for(PRUint32 i = 0; i < paramCount; i++, s++)
{
if(s->IsPtrData())
{
result++;
continue;
}
switch(s->type)
{
case nsXPTType::T_I8 :
case nsXPTType::T_I16 :
case nsXPTType::T_I32 :
result++;
break;
case nsXPTType::T_I64 :
result+=2;
break;
case nsXPTType::T_U8 :
case nsXPTType::T_U16 :
case nsXPTType::T_U32 :
result++;
break;
case nsXPTType::T_U64 :
result+=2;
break;
case nsXPTType::T_FLOAT :
result++;
break;
case nsXPTType::T_DOUBLE :
result+=2;
break;
case nsXPTType::T_BOOL :
case nsXPTType::T_CHAR :
case nsXPTType::T_WCHAR :
result++;
break;
default:
// all the others are plain pointer types
result++;
break;
}
}
return result;
}
void
invoke_copy_to_stack(PRUint32* d, PRUint32 paramCount, nsXPTCVariant* s)
{
for(PRUint32 i = 0; i < paramCount; i++, d++, s++)
{
if(s->IsPtrData())
{
*((void**)d) = s->ptr;
continue;
}
switch(s->type)
{
// 8 and 16 bit types should be promoted to 32 bits when copying
// onto the stack.
case nsXPTType::T_I8 : *((PRUint32*)d) = s->val.i8; break;
case nsXPTType::T_I16 : *((PRUint32*)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 : *((PRUint32*)d) = s->val.u8; break;
case nsXPTType::T_U16 : *((PRUint32*)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 : *((PRUint32*)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;
}
}
}
}
XPTC_PUBLIC_API(nsresult)
XPTC_InvokeByIndex(nsISupports* that, PRUint32 methodIndex,
PRUint32 paramCount, nsXPTCVariant* params)
{
PRUint32 result, n;
n = invoke_count_words(paramCount, params) * 4;
__asm__ __volatile__(
"subl %5, %/sp\n\t" /* make room for params */
"movl %/sp, %/a0\n\t"
"movl %4, %/sp@-\n\t"
"movl %3, %/sp@-\n\t"
"movl %/a0, %/sp@-\n\t"
"jbsr invoke_copy_to_stack\n\t" /* copy params */
"addl #12, %/sp\n\t"
"movl %1, %/a0\n\t"
"movl %/a0, %/sp@-\n\t"
"movl %/a0@, %/a0\n\t"
"movl %2, %/d0\n\t" /* function index */
#if defined(__GXX_ABI_VERSION) && __GXX_ABI_VERSION >= 100 /* G++ V3 ABI */
"movl %/a0@(%/d0:l:4), %/a0\n\t"
#else /* not V3 */
"movl %/a0@(8,%/d0:l:4), %/a0\n\t"
#endif
"jbsr %/a0@\n\t" /* safe to not cleanup sp */
"movl %/d0, %0\n\t"
"addql #4, %/sp\n\t"
"addl %5, %/sp"
: "=g" (result) /* %0 */
: "g" (that), /* %1 */
"g" (methodIndex), /* %2 */
"g" (paramCount), /* %3 */
"g" (params), /* %4 */
"g" (n) /* %5 */
: "a0", "a1", "d0", "d1", "memory"
);
return result;
}
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