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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* Implement shared vtbl methods. */
#include "xptcprivate.h"
#include "xptiprivate.h"
#include "xptc_gcc_x86_unix.h"
extern "C" {
static nsresult ATTRIBUTE_USED
__attribute__ ((regparm (3)))
PrepareAndDispatch(uint32_t methodIndex, nsXPTCStubBase* self, uint32_t* args)
{
#define PARAM_BUFFER_COUNT 16
nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT];
nsXPTCMiniVariant* dispatchParams = nullptr;
const nsXPTMethodInfo* info;
uint8_t paramCount;
uint8_t i;
nsresult result = NS_ERROR_FAILURE;
NS_ASSERTION(self,"no self");
self->mEntry->GetMethodInfo(uint16_t(methodIndex), &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");
uint32_t* 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
dp->val.p = (void*) *ap;
switch(type)
{
case nsXPTType::T_I64 : dp->val.i64 = *((int64_t*) ap); ap++; break;
case nsXPTType::T_U64 : dp->val.u64 = *((uint64_t*)ap); ap++; break;
case nsXPTType::T_DOUBLE : dp->val.d = *((double*) ap); ap++; break;
}
}
result = self->mOuter->CallMethod((uint16_t)methodIndex, info, dispatchParams);
if(dispatchParams != paramBuffer)
delete [] dispatchParams;
return result;
}
} // extern "C"
#define STUB_HEADER(a, b) ".hidden " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase" #a "Stub" #b "Ev\n\t" \
".type " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase" #a "Stub" #b "Ev,@function\n"
#define STUB_SIZE(a, b) ".size " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase" #a "Stub" #b "Ev,.-" SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase" #a "Stub" #b "Ev\n\t"
// gcc3 mangling tends to insert the length of the method name
#define STUB_ENTRY(n) \
asm(".text\n\t" \
".align 2\n\t" \
".if " #n " < 10\n\t" \
".globl " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase5Stub" #n "Ev\n\t" \
STUB_HEADER(5, n) \
SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase5Stub" #n "Ev:\n\t" \
".elseif " #n " < 100\n\t" \
".globl " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase6Stub" #n "Ev\n\t" \
STUB_HEADER(6, n) \
SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase6Stub" #n "Ev:\n\t" \
".elseif " #n " < 1000\n\t" \
".globl " SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase7Stub" #n "Ev\n\t" \
STUB_HEADER(7, n) \
SYMBOL_UNDERSCORE "_ZN14nsXPTCStubBase7Stub" #n "Ev:\n\t" \
".else\n\t" \
".err \"stub number " #n " >= 1000 not yet supported\"\n\t" \
".endif\n\t" \
"movl $" #n ", %eax\n\t" \
"jmp " SYMBOL_UNDERSCORE "SharedStub\n\t" \
".if " #n " < 10\n\t" \
STUB_SIZE(5, n) \
".elseif " #n " < 100\n\t" \
STUB_SIZE(6, n) \
".else\n\t" \
STUB_SIZE(7, n) \
".endif");
// static nsresult SharedStub(uint32_t methodIndex) __attribute__((regparm(1)))
asm(".text\n\t"
".align 2\n\t"
".type " SYMBOL_UNDERSCORE "SharedStub,@function\n\t"
SYMBOL_UNDERSCORE "SharedStub:\n\t"
"leal 0x08(%esp), %ecx\n\t"
"movl 0x04(%esp), %edx\n\t"
"jmp " SYMBOL_UNDERSCORE "PrepareAndDispatch\n\t"
".size " SYMBOL_UNDERSCORE "SharedStub,.-" SYMBOL_UNDERSCORE "SharedStub"
);
#define SENTINEL_ENTRY(n) \
nsresult nsXPTCStubBase::Sentinel##n() \
{ \
NS_ERROR("nsXPTCStubBase::Sentinel called"); \
return NS_ERROR_NOT_IMPLEMENTED; \
}
#include "xptcstubsdef.inc"
void
xptc_dummy()
{
}
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