зеркало из https://github.com/mozilla/gecko-dev.git
196 строки
5.9 KiB
C++
196 строки
5.9 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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#include "xptcprivate.h"
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#if (_MIPS_SIM != _ABIN32) && (_MIPS_SIM != _ABI64)
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#error "This code is for MIPS n32/n64 only"
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#endif
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/*
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* This is for MIPS n32/n64 ABI
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*
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* When we're called, the "gp" registers are stored in gprData and
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* the "fp" registers are stored in fprData. There are 8 regs
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* available which correspond to the first 7 parameters of the
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* function and the "this" pointer. If there are additional parms,
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* they are stored on the stack at address "args".
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*
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*/
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extern "C" nsresult ATTRIBUTE_USED
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PrepareAndDispatch(nsXPTCStubBase* self, uint32_t methodIndex, uint64_t* args,
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uint64_t *gprData, double *fprData)
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{
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#define PARAM_BUFFER_COUNT 16
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#define PARAM_GPR_COUNT 7
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#define PARAM_FPR_COUNT 7
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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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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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const uint8_t indexOfJSContext = info->IndexOfJSContext();
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uint64_t* ap = args;
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uint32_t iCount = 0;
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for(i = 0; i < paramCount; i++)
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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 (i == indexOfJSContext) {
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if (iCount < PARAM_GPR_COUNT)
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iCount++;
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else
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ap++;
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}
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if(param.IsOut() || !type.IsArithmetic())
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{
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if (iCount < PARAM_GPR_COUNT)
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dp->val.p = (void*)gprData[iCount++];
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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:
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if (iCount < PARAM_GPR_COUNT)
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dp->val.i8 = (int8_t)gprData[iCount++];
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else
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dp->val.i8 = (int8_t)*ap++;
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break;
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case nsXPTType::T_I16:
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if (iCount < PARAM_GPR_COUNT)
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dp->val.i16 = (int16_t)gprData[iCount++];
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else
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dp->val.i16 = (int16_t)*ap++;
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break;
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case nsXPTType::T_I32:
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if (iCount < PARAM_GPR_COUNT)
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dp->val.i32 = (int32_t)gprData[iCount++];
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else
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dp->val.i32 = (int32_t)*ap++;
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break;
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case nsXPTType::T_I64:
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if (iCount < PARAM_GPR_COUNT)
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dp->val.i64 = (int64_t)gprData[iCount++];
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else
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dp->val.i64 = (int64_t)*ap++;
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break;
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case nsXPTType::T_U8:
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if (iCount < PARAM_GPR_COUNT)
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dp->val.u8 = (uint8_t)gprData[iCount++];
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else
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dp->val.u8 = (uint8_t)*ap++;
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break;
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case nsXPTType::T_U16:
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if (iCount < PARAM_GPR_COUNT)
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dp->val.u16 = (uint16_t)gprData[iCount++];
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else
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dp->val.u16 = (uint16_t)*ap++;
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break;
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case nsXPTType::T_U32:
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if (iCount < PARAM_GPR_COUNT)
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dp->val.u32 = (uint32_t)gprData[iCount++];
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else
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dp->val.u32 = (uint32_t)*ap++;
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break;
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case nsXPTType::T_U64:
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if (iCount < PARAM_GPR_COUNT)
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dp->val.u64 = (uint64_t)gprData[iCount++];
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else
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dp->val.u64 = (uint64_t)*ap++;
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break;
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case nsXPTType::T_FLOAT:
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// the float data formate must not be converted!
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// Just only copy without conversion.
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if (iCount < PARAM_FPR_COUNT)
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dp->val.f = *(float*)&fprData[iCount++];
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else
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dp->val.f = *((float*)ap++);
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break;
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case nsXPTType::T_DOUBLE:
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if (iCount < PARAM_FPR_COUNT)
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dp->val.d = (double)fprData[iCount++];
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else
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dp->val.d = *((double*)ap++);
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break;
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case nsXPTType::T_BOOL:
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if (iCount < PARAM_GPR_COUNT)
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dp->val.b = (bool)gprData[iCount++];
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else
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dp->val.b = (bool)*ap++;
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break;
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case nsXPTType::T_CHAR:
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if (iCount < PARAM_GPR_COUNT)
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dp->val.c = (char)gprData[iCount++];
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else
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dp->val.c = (char)*ap++;
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break;
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case nsXPTType::T_WCHAR:
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if (iCount < PARAM_GPR_COUNT)
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dp->val.wc = (wchar_t)gprData[iCount++];
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else
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dp->val.wc = (wchar_t)*ap++;
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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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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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#define STUB_ENTRY(n) /* defined in the assembly file */
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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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