зеркало из https://github.com/mozilla/gecko-dev.git
155 строки
4.3 KiB
C++
155 строки
4.3 KiB
C++
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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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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#include "xptcprivate.h"
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#include <stddef.h>
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#include <stdlib.h>
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#include <stdint.h>
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// "This code is for IA64 only"
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/* Implement shared vtbl methods. */
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extern "C" nsresult ATTRIBUTE_USED
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PrepareAndDispatch(nsXPTCStubBase* self, uint32_t methodIndex,
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uint64_t* intargs, uint64_t* floatargs, uint64_t* restargs)
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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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uint64_t* iargs = intargs;
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uint64_t* fargs = floatargs;
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uint8_t paramCount;
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uint8_t i;
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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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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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const uint8_t indexOfJSContext = info->IndexOfJSContext();
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for(i = 0; i < paramCount; ++i)
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{
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int isfloat = 0;
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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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MOZ_CRASH("NYI: support implicit JSContext*, bug 1475699");
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if(param.IsOut() || !type.IsArithmetic())
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{
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#ifdef __LP64__
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/* 64 bit pointer mode */
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dp->val.p = (void*) *iargs;
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#else
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/* 32 bit pointer mode */
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uint32_t* adr = (uint32_t*) iargs;
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dp->val.p = (void*) (*(adr+1));
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#endif
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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 = *(iargs); break;
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case nsXPTType::T_I16 : dp->val.i16 = *(iargs); break;
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case nsXPTType::T_I32 : dp->val.i32 = *(iargs); break;
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case nsXPTType::T_I64 : dp->val.i64 = *(iargs); break;
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case nsXPTType::T_U8 : dp->val.u8 = *(iargs); break;
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case nsXPTType::T_U16 : dp->val.u16 = *(iargs); break;
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case nsXPTType::T_U32 : dp->val.u32 = *(iargs); break;
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case nsXPTType::T_U64 : dp->val.u64 = *(iargs); break;
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case nsXPTType::T_FLOAT :
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isfloat = 1;
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if (i < 7)
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dp->val.f = (float) *((double*) fargs); /* register */
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else
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dp->val.u32 = *(fargs); /* memory */
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break;
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case nsXPTType::T_DOUBLE :
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isfloat = 1;
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dp->val.u64 = *(fargs);
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break;
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case nsXPTType::T_BOOL : dp->val.b = *(iargs); break;
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case nsXPTType::T_CHAR : dp->val.c = *(iargs); break;
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case nsXPTType::T_WCHAR : dp->val.wc = *(iargs); 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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if (i < 7)
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{
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/* we are parsing register arguments */
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if (i == 6)
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{
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// run out of register arguments, move on to memory arguments
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iargs = restargs;
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fargs = restargs;
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}
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else
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{
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++iargs; // advance one integer register slot
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if (isfloat) ++fargs; // advance float register slot if isfloat
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}
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}
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else
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{
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/* we are parsing memory arguments */
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++iargs;
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++fargs;
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}
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}
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nsresult result = self->mOuter->CallMethod((uint16_t) methodIndex, info,
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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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extern "C" nsresult SharedStub(uint64_t,uint64_t,uint64_t,uint64_t,
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uint64_t,uint64_t,uint64_t,uint64_t,uint64_t,uint64_t *);
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/* Variable a0-a7 were put there so we can have access to the 8 input
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registers on Stubxyz entry */
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#define STUB_ENTRY(n) \
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nsresult nsXPTCStubBase::Stub##n(uint64_t a1, \
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uint64_t a2,uint64_t a3,uint64_t a4,uint64_t a5,uint64_t a6,uint64_t a7, \
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uint64_t a8) \
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{ uint64_t a0 = (uint64_t) this; \
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return SharedStub(a0,a1,a2,a3,a4,a5,a6,a7,(uint64_t) n, &a8); \
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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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