96429b6933
XULRunner is a single "gecko runtime" installable package that can be used to bootstrap multiple XUL+XPCOM applications that are as rich as Firefox and Thunderbird. It will provide mechanisms for installing, upgrading, and uninstalling these applications. XULRunner will also provide libxul, a solution which allows the embedding of Mozilla technologies in other projects and products. Based on an initial port by James Wright <jamesw at bsdhosting.co.za>. Improvements and okay steven@
254 lines
9.2 KiB
C++
254 lines
9.2 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) 1999
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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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// Implement shared vtbl methods.
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#include "xptcprivate.h"
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// The Linux/PPC ABI (aka PPC/SYSV ABI) passes the first 8 integral
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// parameters and the first 8 floating point parameters in registers
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// (r3-r10 and f1-f8), no stack space is allocated for these by the
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// caller. The rest of the parameters are passed in the callers stack
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// area. The stack pointer has to retain 16-byte alignment, longlongs
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// and doubles are aligned on 8-byte boundaries.
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#define PARAM_BUFFER_COUNT 16
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#define GPR_COUNT 8
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#define FPR_COUNT 8
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// PrepareAndDispatch() is called by SharedStub() and calls the actual method.
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//
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// - 'args[]' contains the arguments passed on stack
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// - 'gprData[]' contains the arguments passed in integer registers
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// - 'fprData[]' contains the arguments passed in floating point registers
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//
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// The parameters are mapped into an array of type 'nsXPTCMiniVariant'
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// and then the method gets called.
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extern "C" nsresult
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PrepareAndDispatch(nsXPTCStubBase* self,
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PRUint32 methodIndex,
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PRUint32* args,
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PRUint32 *gprData,
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double *fprData)
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{
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nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT];
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nsXPTCMiniVariant* dispatchParams = NULL;
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nsIInterfaceInfo* iface_info = NULL;
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const nsXPTMethodInfo* info;
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PRUint32 paramCount;
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PRUint32 i;
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nsresult result = NS_ERROR_FAILURE;
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NS_ASSERTION(self,"no self");
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self->GetInterfaceInfo(&iface_info);
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NS_ASSERTION(iface_info,"no interface info");
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if (! iface_info)
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return NS_ERROR_UNEXPECTED;
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iface_info->GetMethodInfo(PRUint16(methodIndex), &info);
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NS_ASSERTION(info,"no method info");
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if (! info)
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return NS_ERROR_UNEXPECTED;
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paramCount = info->GetParamCount();
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// setup variant array pointer
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if(paramCount > PARAM_BUFFER_COUNT)
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dispatchParams = new nsXPTCMiniVariant[paramCount];
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else
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dispatchParams = paramBuffer;
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NS_ASSERTION(dispatchParams,"no place for params");
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if (! dispatchParams)
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return NS_ERROR_OUT_OF_MEMORY;
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PRUint32* ap = args;
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PRUint32 gpr = 1; // skip one GPR register
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PRUint32 fpr = 0;
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PRUint32 tempu32;
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PRUint64 tempu64;
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for(i = 0; i < paramCount; i++) {
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const nsXPTParamInfo& param = info->GetParam(i);
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const nsXPTType& type = param.GetType();
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nsXPTCMiniVariant* dp = &dispatchParams[i];
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if (!param.IsOut() && type == nsXPTType::T_DOUBLE) {
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if (fpr < FPR_COUNT)
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dp->val.d = fprData[fpr++];
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else {
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if ((PRUint32) ap & 4) ap++; // doubles are 8-byte aligned on stack
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dp->val.d = *(double*) ap;
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ap += 2;
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}
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continue;
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}
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else if (!param.IsOut() && type == nsXPTType::T_FLOAT) {
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if (fpr < FPR_COUNT)
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dp->val.f = (float) fprData[fpr++]; // in registers floats are passed as doubles
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else
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dp->val.f = *(float*) ap++;
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continue;
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}
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else if (!param.IsOut() && (type == nsXPTType::T_I64
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|| type == nsXPTType::T_U64)) {
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if (gpr & 1) gpr++; // longlongs are aligned in odd/even register pairs, eg. r5/r6
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if ((gpr + 1) < GPR_COUNT) {
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tempu64 = *(PRUint64*) &gprData[gpr];
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gpr += 2;
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}
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else {
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if ((PRUint32) ap & 4) ap++; // longlongs are 8-byte aligned on stack
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tempu64 = *(PRUint64*) ap;
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ap += 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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tempu32 = gprData[gpr++];
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else
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tempu32 = *ap++;
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}
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if(param.IsOut() || !type.IsArithmetic()) {
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dp->val.p = (void*) tempu32;
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continue;
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}
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switch(type) {
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case nsXPTType::T_I8: dp->val.i8 = (PRInt8) tempu32; break;
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case nsXPTType::T_I16: dp->val.i16 = (PRInt16) tempu32; break;
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case nsXPTType::T_I32: dp->val.i32 = (PRInt32) tempu32; break;
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case nsXPTType::T_I64: dp->val.i64 = (PRInt64) tempu64; break;
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case nsXPTType::T_U8: dp->val.u8 = (PRUint8) tempu32; break;
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case nsXPTType::T_U16: dp->val.u16 = (PRUint16) tempu32; break;
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case nsXPTType::T_U32: dp->val.u32 = (PRUint32) tempu32; break;
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case nsXPTType::T_U64: dp->val.u64 = (PRUint64) tempu64; break;
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case nsXPTType::T_BOOL: dp->val.b = (PRBool) tempu32; break;
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case nsXPTType::T_CHAR: dp->val.c = (char) tempu32; break;
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case nsXPTType::T_WCHAR: dp->val.wc = (wchar_t) tempu32; break;
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default:
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NS_ASSERTION(0, "bad type");
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break;
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}
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}
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result = self->CallMethod((PRUint16) methodIndex, info, dispatchParams);
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NS_RELEASE(iface_info);
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if (dispatchParams != paramBuffer)
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delete [] dispatchParams;
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return result;
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}
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// Load r11 with the constant 'n' and branch to SharedStub().
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//
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// XXX Yes, it's ugly that we're relying on gcc's name-mangling here;
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// however, it's quick, dirty, and'll break when the ABI changes on
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// us, which is what we want ;-).
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#if __GXX_ABI_VERSION < 100
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// gcc-2 version
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# define STUB_ENTRY(n) \
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__asm__ ( \
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".section \".text\" \n\t" \
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".align 2 \n\t" \
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".globl Stub"#n"__14nsXPTCStubBase \n\t" \
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".type Stub"#n"__14nsXPTCStubBase,@function \n\n" \
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\
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"Stub"#n"__14nsXPTCStubBase: \n\t" \
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"li 11,"#n" \n\t" \
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"b SharedStub@local \n" \
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);
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#else
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// gcc-3 version
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//
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// As G++3 ABI contains the length of the functionname in the mangled
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// name, it is difficult to get a generic assembler mechanism like
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// in the G++ 2.95 case.
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// Create names would be like:
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// _ZN14nsXPTCStubBase5Stub1Ev
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// _ZN14nsXPTCStubBase6Stub12Ev
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// _ZN14nsXPTCStubBase7Stub123Ev
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// _ZN14nsXPTCStubBase8Stub1234Ev
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// etc.
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// Use assembler directives to get the names right...
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# define STUB_ENTRY(n) \
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__asm__ ( \
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".align 2 \n\t" \
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".if "#n" < 10 \n\t" \
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".globl _ZN14nsXPTCStubBase5Stub"#n"Ev \n\t" \
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".type _ZN14nsXPTCStubBase5Stub"#n"Ev,@function \n\n" \
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"_ZN14nsXPTCStubBase5Stub"#n"Ev: \n\t" \
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\
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".elseif "#n" < 100 \n\t" \
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".globl _ZN14nsXPTCStubBase6Stub"#n"Ev \n\t" \
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".type _ZN14nsXPTCStubBase6Stub"#n"Ev,@function \n\n" \
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"_ZN14nsXPTCStubBase6Stub"#n"Ev: \n\t" \
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\
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".elseif "#n" < 1000 \n\t" \
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".globl _ZN14nsXPTCStubBase7Stub"#n"Ev \n\t" \
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".type _ZN14nsXPTCStubBase7Stub"#n"Ev,@function \n\n" \
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"_ZN14nsXPTCStubBase7Stub"#n"Ev: \n\t" \
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\
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".else \n\t" \
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".err \"stub number "#n" >= 1000 not yet supported\"\n" \
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".endif \n\t" \
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\
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"li 11,"#n" \n\t" \
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"b SharedStub@local \n" \
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);
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#endif
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#define SENTINEL_ENTRY(n) \
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nsresult nsXPTCStubBase::Sentinel##n() \
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{ \
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NS_ASSERTION(0,"nsXPTCStubBase::Sentinel called"); \
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return NS_ERROR_NOT_IMPLEMENTED; \
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}
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#include "xptcstubsdef.inc"
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