35944f86f2
this is smaller than firefox and has special handling for small screens which is useful for machines like the zaurus. unfortunately, it's not there yet, see the TODO. please don't add this to the www Makefile yet.
142 lines
5.8 KiB
C++
142 lines
5.8 KiB
C++
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 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 Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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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.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Franz.Sirl-kernel@lauterbach.com (Franz Sirl)
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* beard@netscape.com (Patrick Beard)
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* waterson@netscape.com (Chris Waterson)
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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 the GNU General Public License Version 2 or later (the "GPL"), or
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* 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 NPL, 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 NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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// Platform specific code to invoke XPCOM methods on native objects
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// The purpose of XPTC_InvokeByIndex() is to map a platform
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// indepenpent call to the platform ABI. To do that,
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// XPTC_InvokeByIndex() has to determine the method to call via vtable
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// access. The parameters for the method are read from the
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// nsXPTCVariant* and prepared for th native ABI. For the Linux/PPC
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// ABI this means that the first 8 integral and floating point
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// parameters are passed in registers.
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#include "xptcprivate.h"
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// 8 integral parameters are passed in registers
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#define GPR_COUNT 8
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// 8 floating point parameters are passed in registers, floats are
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// promoted to doubles when passed in registers
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#define FPR_COUNT 8
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extern "C" PRUint32
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invoke_count_words(PRUint32 paramCount, nsXPTCVariant* s)
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{
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return PRUint32(((paramCount * 2) + 3) & ~3);
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}
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extern "C" void
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invoke_copy_to_stack(PRUint32* d,
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PRUint32 paramCount,
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nsXPTCVariant* s,
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PRUint32* gpregs,
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double* fpregs)
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{
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PRUint32 gpr = 1; // skip one GP reg for 'that'
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PRUint32 fpr = 0;
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PRUint32 tempu32;
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PRUint64 tempu64;
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for(uint32 i = 0; i < paramCount; i++, s++) {
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if(s->IsPtrData())
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tempu32 = (PRUint32) s->ptr;
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else {
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switch(s->type) {
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case nsXPTType::T_FLOAT: break;
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case nsXPTType::T_DOUBLE: break;
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case nsXPTType::T_I8: tempu32 = s->val.i8; break;
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case nsXPTType::T_I16: tempu32 = s->val.i16; break;
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case nsXPTType::T_I32: tempu32 = s->val.i32; break;
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case nsXPTType::T_I64: tempu64 = s->val.i64; break;
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case nsXPTType::T_U8: tempu32 = s->val.u8; break;
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case nsXPTType::T_U16: tempu32 = s->val.u16; break;
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case nsXPTType::T_U32: tempu32 = s->val.u32; break;
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case nsXPTType::T_U64: tempu64 = s->val.u64; break;
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case nsXPTType::T_BOOL: tempu32 = s->val.b; break;
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case nsXPTType::T_CHAR: tempu32 = s->val.c; break;
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case nsXPTType::T_WCHAR: tempu32 = s->val.wc; break;
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default: tempu32 = (PRUint32) s->val.p; break;
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}
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}
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if (!s->IsPtrData() && s->type == nsXPTType::T_DOUBLE) {
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if (fpr < FPR_COUNT)
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fpregs[fpr++] = s->val.d;
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else {
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if ((PRUint32) d & 4) d++; // doubles are 8-byte aligned on stack
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*((double*) d) = s->val.d;
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d += 2;
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}
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}
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else if (!s->IsPtrData() && s->type == nsXPTType::T_FLOAT) {
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if (fpr < FPR_COUNT)
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fpregs[fpr++] = s->val.f; // if passed in registers, floats are promoted to doubles
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else
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*((float*) d++) = s->val.f;
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}
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else if (!s->IsPtrData() && (s->type == nsXPTType::T_I64
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|| s->type == nsXPTType::T_U64)) {
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if ((gpr + 1) < GPR_COUNT) {
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if (gpr & 1) gpr++; // longlongs are aligned in odd/even register pairs, eg. r5/r6
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*((PRUint64*) &gpregs[gpr]) = tempu64;
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gpr += 2;
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}
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else {
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if ((PRUint32) d & 4) d++; // longlongs are 8-byte aligned on stack
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*((PRUint64*) d) = tempu64;
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d += 2;
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}
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}
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else {
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if (gpr < GPR_COUNT)
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gpregs[gpr++] = tempu32;
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else
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*d++ = tempu32;
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}
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}
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}
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extern "C"
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XPTC_PUBLIC_API(nsresult)
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XPTC_InvokeByIndex(nsISupports* that, PRUint32 methodIndex,
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PRUint32 paramCount, nsXPTCVariant* params);
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