/* -*- 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) 1999
* 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
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* ***** END LICENSE BLOCK ***** */
#include "xptcprivate.h"
#if _HPUX
#error "This code is for HP-PA RISC 32 bit mode only"
#endif
#include <alloca.h>
typedef unsigned nsXPCVariant;
extern "C" PRInt32
invoke_count_bytes(nsISupports* that, const PRUint32 methodIndex,
const PRUint32 paramCount, const nsXPTCVariant* s)
{
PRInt32 result = 4; /* variant records do not include self pointer */
/* counts the number of bytes required by the argument stack,
64 bit integer, and double requires 8 bytes. All else requires
4 bytes.
*/
{
PRUint32 indx;
for (indx = paramCount; indx > 0; --indx, ++s)
{
if (! s->IsPtrData())
{
if (s->type == nsXPTType::T_I64 || s->type == nsXPTType::T_U64 ||
s->type == nsXPTType::T_DOUBLE)
{
/* 64 bit integer and double aligned on 8 byte boundaries */
result += (result & 4) + 8;
continue;
}
}
result += 4; /* all other cases use 4 bytes */
}
}
result -= 72; /* existing stack buffer is 72 bytes */
if (result < 0)
return 0;
{
/* round up to 64 bytes boundary */
PRInt32 remainder = result & 63;
return (remainder == 0) ? result : (result + 64 - remainder);
}
}
extern "C" PRUint32
invoke_copy_to_stack(PRUint32* d,
const PRUint32 paramCount, nsXPTCVariant* s)
{
typedef struct
{
PRUint32 hi;
PRUint32 lo;
} DU;
PRUint32* dest = d;
nsXPTCVariant* source = s;
/* we clobber param vars by copying stuff on stack, have to use local var */
PRUint32 floatflags = 0;
/* flag indicating which floating point registers to load */
PRUint32 regwords = 1; /* register 26 is reserved for ptr to 'that' */
PRUint32 indx;
for (indx = paramCount; indx > 0; --indx, --dest, ++source)
{
if (source->IsPtrData())
{
*((void**) dest) = source->ptr;
++regwords;
continue;
}
switch (source->type)
{
case nsXPTType::T_I8 : *((PRInt32*) dest) = source->val.i8; break;
case nsXPTType::T_I16 : *((PRInt32*) dest) = source->val.i16; break;
case nsXPTType::T_I32 : *((PRInt32*) dest) = source->val.i32; break;
case nsXPTType::T_I64 :
case nsXPTType::T_U64 :
if (regwords & 1)
{
/* align on double word boundary */
--dest;
++regwords;
}
*((uint32*) dest) = ((DU *) source)->lo;
*((uint32*) --dest) = ((DU *) source)->hi;
/* big endian - hi word in low addr */
regwords += 2;
continue;
case nsXPTType::T_DOUBLE :
if (regwords & 1)
{
/* align on double word boundary */
--dest;
++regwords;
}
switch (regwords) /* load double precision float register */
{
case 2:
floatflags |= 1;
}
*((uint32*) dest) = ((DU *) source)->lo;
*((uint32*) --dest) = ((DU *) source)->hi;
/* big endian - hi word in low addr */
regwords += 2;
continue;
case nsXPTType::T_FLOAT :
switch (regwords) /* load single precision float register */
{
case 1:
floatflags |= 2;
break;
case 2:
floatflags |= 4;
break;
case 3:
floatflags |= 8;
}
*((float*) dest) = source->val.f;
break;
case nsXPTType::T_U8 : *((PRUint32*) (dest)) = source->val.u8; break;
case nsXPTType::T_U16 : *((PRUint32*) (dest)) = source->val.u16; break;
case nsXPTType::T_U32 : *((PRUint32*) (dest)) = source->val.u32; break;
case nsXPTType::T_BOOL : *((PRBool*) (dest)) = source->val.b; break;
case nsXPTType::T_CHAR : *((PRUint32*) (dest)) = source->val.c; break;
case nsXPTType::T_WCHAR : *((PRInt32*) (dest)) = source->val.wc; break;
default:
// all the others are plain pointer types
*((void**) dest) = source->val.p;
}
++regwords;
}
return floatflags;
}