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lightning-sunbird  0.9+nobinonly
Defines | Functions
xptcstubs.cpp File Reference
#include "xptcprivate.h"
#include "xptcstubsdef.inc"

Go to the source code of this file.

Defines

#define PARAM_BUFFER_COUNT   16
#define STUB_ENTRY(n)
#define SENTINEL_ENTRY(n)

Functions

static nsresult __stdcall PrepareAndDispatch (nsXPTCStubBase *self, PRUint32 methodIndex, PRUint32 *args, PRUint32 *stackBytesToPop)
static __declspec (naked) void SharedStub(void)
void xptc_dummy ()

Define Documentation

Value:
nsresult __stdcall nsXPTCStubBase::Sentinel##n() \
{ \
    NS_ASSERTION(0,"nsXPTCStubBase::Sentinel called"); \
    return NS_ERROR_NOT_IMPLEMENTED; \
}

Definition at line 181 of file xptcstubs.cpp.

Value:
__declspec(naked) nsresult __stdcall nsXPTCStubBase::Stub##n() \
{ __asm mov ecx, n __asm jmp SharedStub }

Definition at line 158 of file xptcstubs.cpp.


Function Documentation

static __declspec ( naked  ) [static]

Definition at line 132 of file xptcstubs.cpp.

{
    __asm {
        push ebp            // set up simple stack frame
        mov  ebp, esp       // stack has: ebp/vtbl_index/retaddr/this/args
        push ecx            // make room for a ptr
        lea  eax, [ebp-4]   // pointer to stackBytesToPop
        push eax
        lea  eax, [ebp+12]  // pointer to args
        push eax
        push ecx            // vtbl_index
        mov  eax, [ebp+8]   // this
        push eax
        call PrepareAndDispatch
        mov  edx, [ebp+4]   // return address
        mov  ecx, [ebp-4]   // stackBytesToPop
        add  ecx, 8         // for 'this' and return address
        mov  esp, ebp
        pop  ebp
        add  esp, ecx       // fix up stack pointer
        jmp  edx            // simulate __stdcall return
    }
}

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static nsresult __stdcall PrepareAndDispatch ( nsXPTCStubBase *  self,
PRUint32  methodIndex,
PRUint32 args,
PRUint32 stackBytesToPop 
) [static]

Definition at line 49 of file xptcstubs.cpp.

{
#define PARAM_BUFFER_COUNT     16

    nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT];
    nsXPTCMiniVariant* dispatchParams = NULL;
    nsIInterfaceInfo* iface_info = NULL;
    const nsXPTMethodInfo* info = NULL;
    PRUint8 paramCount;
    PRUint8 i;
    nsresult result = NS_ERROR_FAILURE;

    // If anything fails before stackBytesToPop can be set then
    // the failure is completely catastrophic!

    NS_ASSERTION(self,"no self");

    self->GetInterfaceInfo(&iface_info);
    NS_ASSERTION(iface_info,"no interface info");

    iface_info->GetMethodInfo(PRUint16(methodIndex), &info);
    NS_ASSERTION(info,"no interface info");

    paramCount = info->GetParamCount();

    // setup variant array pointer
    if(paramCount > PARAM_BUFFER_COUNT)
        dispatchParams = new nsXPTCMiniVariant[paramCount];
    else
        dispatchParams = paramBuffer;
    NS_ASSERTION(dispatchParams,"no place for params");

    PRUint32* ap = args;
    for(i = 0; i < paramCount; i++, ap++)
    {
        const nsXPTParamInfo& param = info->GetParam(i);
        const nsXPTType& type = param.GetType();
        nsXPTCMiniVariant* dp = &dispatchParams[i];

        if(param.IsOut() || !type.IsArithmetic())
        {
            dp->val.p = (void*) *ap;
            continue;
        }
        // else
        switch(type)
        {
        case nsXPTType::T_I8     : dp->val.i8  = *((PRInt8*)  ap);       break;
        case nsXPTType::T_I16    : dp->val.i16 = *((PRInt16*) ap);       break;
        case nsXPTType::T_I32    : dp->val.i32 = *((PRInt32*) ap);       break;
        case nsXPTType::T_I64    : dp->val.i64 = *((PRInt64*) ap); ap++; break;
        case nsXPTType::T_U8     : dp->val.u8  = *((PRUint8*) ap);       break;
        case nsXPTType::T_U16    : dp->val.u16 = *((PRUint16*)ap);       break;
        case nsXPTType::T_U32    : dp->val.u32 = *((PRUint32*)ap);       break;
        case nsXPTType::T_U64    : dp->val.u64 = *((PRUint64*)ap); ap++; break;
        case nsXPTType::T_FLOAT  : dp->val.f   = *((float*)   ap);       break;
        case nsXPTType::T_DOUBLE : dp->val.d   = *((double*)  ap); ap++; break;
        case nsXPTType::T_BOOL   : dp->val.b   = *((PRBool*)  ap);       break;
        case nsXPTType::T_CHAR   : dp->val.c   = *((char*)    ap);       break;
        case nsXPTType::T_WCHAR  : dp->val.wc  = *((wchar_t*) ap);       break;
        default:
            NS_ASSERTION(0, "bad type");
            break;
        }
    }
    *stackBytesToPop = ((PRUint32)ap) - ((PRUint32)args);

    result = self->CallMethod((PRUint16)methodIndex, info, dispatchParams);

    NS_RELEASE(iface_info);

    if(dispatchParams != paramBuffer)
        delete [] dispatchParams;

    return result;
}

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Definition at line 200 of file xptcstubs.cpp.

{
}