зеркало из https://github.com/mozilla/gecko-dev.git
118 строки
3.8 KiB
C++
118 строки
3.8 KiB
C++
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* Implement shared vtbl methods. */
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#include "xptcprivate.h"
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#if defined(sparc) || defined(__sparc__)
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extern "C" nsresult ATTRIBUTE_USED
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PrepareAndDispatch(nsXPTCStubBase* self, uint32_t methodIndex, uint32_t* args)
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{
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typedef struct {
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uint32_t hi;
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uint32_t lo;
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} DU; // have to move 64 bit entities as 32 bit halves since
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// stack slots are not guaranteed 16 byte aligned
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#define PARAM_BUFFER_COUNT 16
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nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT];
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nsXPTCMiniVariant* dispatchParams = nullptr;
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nsIInterfaceInfo* iface_info = nullptr;
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const nsXPTMethodInfo* info;
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uint8_t paramCount;
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uint8_t 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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iface_info->GetMethodInfo(uint16_t(methodIndex), &info);
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NS_ASSERTION(info,"no interface info");
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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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uint32_t* ap = args;
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for(i = 0; i < paramCount; i++, ap++)
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{
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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.IsArithmetic())
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{
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if (type == nsXPTType::T_JSVAL)
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dp->val.p = *((void**) *ap);
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else
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dp->val.p = (void*) *ap;
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continue;
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}
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// else
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switch(type)
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{
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case nsXPTType::T_I8 : dp->val.i8 = *((int32_t*) ap); break;
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case nsXPTType::T_I16 : dp->val.i16 = *((int32_t*) ap); break;
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case nsXPTType::T_I32 : dp->val.i32 = *((int32_t*) ap); break;
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case nsXPTType::T_DOUBLE :
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case nsXPTType::T_U64 :
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case nsXPTType::T_I64 : ((DU *)dp)->hi = ((DU *)ap)->hi;
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((DU *)dp)->lo = ((DU *)ap)->lo;
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ap++;
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break;
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case nsXPTType::T_U8 : dp->val.u8 = *((uint32_t*)ap); break;
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case nsXPTType::T_U16 : dp->val.u16 = *((uint32_t*)ap); break;
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case nsXPTType::T_U32 : dp->val.u32 = *((uint32_t*)ap); break;
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case nsXPTType::T_FLOAT : dp->val.f = *((float*) ap); break;
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case nsXPTType::T_BOOL : dp->val.b = *((uint32_t*)ap); break;
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case nsXPTType::T_CHAR : dp->val.c = *((uint32_t*)ap); break;
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case nsXPTType::T_WCHAR : dp->val.wc = *((int32_t*) ap); break;
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default:
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NS_ERROR("bad type");
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break;
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}
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}
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result = self->CallMethod((uint16_t)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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extern "C" nsresult SharedStub(int, int*);
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#define STUB_ENTRY(n) \
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nsresult nsXPTCStubBase::Stub##n() \
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{ \
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int dummy; /* defeat tail-call optimization */ \
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return SharedStub(n, &dummy); \
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}
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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_ERROR("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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#endif /* sparc || __sparc__ */
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