зеркало из https://github.com/mozilla/gecko-dev.git
98 строки
3.6 KiB
C++
98 строки
3.6 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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extern "C" {
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nsresult ATTRIBUTE_USED
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PrepareAndDispatch(nsXPTCStubBase* self, uint32_t methodIndex, uint32_t* args)
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{
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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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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->mEntry->GetMethodInfo(uint16_t(methodIndex), &info);
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NS_ASSERTION(info,"no method 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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dp->val.p = (void*) *ap;
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continue;
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}
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switch(type)
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{
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// the 8 and 16 bit types will have been promoted to 32 bits before
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// being pushed onto the stack. Since the 68k is big endian, we
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// need to skip over the leading high order bytes.
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case nsXPTType::T_I8 : dp->val.i8 = *(((int8_t*) ap) + 3); break;
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case nsXPTType::T_I16 : dp->val.i16 = *(((int16_t*) ap) + 1); break;
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case nsXPTType::T_I32 : dp->val.i32 = *((int32_t*) ap); break;
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case nsXPTType::T_I64 : dp->val.i64 = *((int64_t*) ap); ap++; break;
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case nsXPTType::T_U8 : dp->val.u8 = *(((uint8_t*) ap) + 3); break;
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case nsXPTType::T_U16 : dp->val.u16 = *(((uint16_t*)ap) + 1); break;
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case nsXPTType::T_U32 : dp->val.u32 = *((uint32_t*)ap); break;
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case nsXPTType::T_U64 : dp->val.u64 = *((uint64_t*)ap); ap++; break;
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case nsXPTType::T_FLOAT : dp->val.f = *((float*) ap); break;
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case nsXPTType::T_DOUBLE : dp->val.d = *((double*) ap); 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 = *(((char*) ap) + 3); break;
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case nsXPTType::T_WCHAR : dp->val.wc = *((wchar_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->mOuter->CallMethod((uint16_t)methodIndex, info, dispatchParams);
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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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}
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#define STUB_ENTRY(n) \
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nsresult nsXPTCStubBase::Stub##n() \
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{ \
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void *frame = __builtin_frame_address(0); \
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return PrepareAndDispatch(this, n, (uint32_t*)frame + 3); \
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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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