1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/xpcom/reflect/xptcall/src/md/win32/xptcinvoke.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,74 @@
1.4 +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +/* Platform specific code to invoke XPCOM methods on native objects */
1.10 +
1.11 +#include "xptcprivate.h"
1.12 +
1.13 +#ifndef WIN32
1.14 +#error "This code is for Win32 only"
1.15 +#endif
1.16 +
1.17 +static void __fastcall
1.18 +invoke_copy_to_stack(uint32_t* d, uint32_t paramCount, nsXPTCVariant* s)
1.19 +{
1.20 + for(; paramCount > 0; paramCount--, d++, s++)
1.21 + {
1.22 + if(s->IsPtrData())
1.23 + {
1.24 + *((void**)d) = s->ptr;
1.25 + continue;
1.26 + }
1.27 + switch(s->type)
1.28 + {
1.29 + case nsXPTType::T_I8 : *((int8_t*) d) = s->val.i8; break;
1.30 + case nsXPTType::T_I16 : *((int16_t*) d) = s->val.i16; break;
1.31 + case nsXPTType::T_I32 : *((int32_t*) d) = s->val.i32; break;
1.32 + case nsXPTType::T_I64 : *((int64_t*) d) = s->val.i64; d++; break;
1.33 + case nsXPTType::T_U8 : *((uint8_t*) d) = s->val.u8; break;
1.34 + case nsXPTType::T_U16 : *((uint16_t*)d) = s->val.u16; break;
1.35 + case nsXPTType::T_U32 : *((uint32_t*)d) = s->val.u32; break;
1.36 + case nsXPTType::T_U64 : *((uint64_t*)d) = s->val.u64; d++; break;
1.37 + case nsXPTType::T_FLOAT : *((float*) d) = s->val.f; break;
1.38 + case nsXPTType::T_DOUBLE : *((double*) d) = s->val.d; d++; break;
1.39 + case nsXPTType::T_BOOL : *((bool*) d) = s->val.b; break;
1.40 + case nsXPTType::T_CHAR : *((char*) d) = s->val.c; break;
1.41 + case nsXPTType::T_WCHAR : *((wchar_t*) d) = s->val.wc; break;
1.42 + default:
1.43 + // all the others are plain pointer types
1.44 + *((void**)d) = s->val.p;
1.45 + break;
1.46 + }
1.47 + }
1.48 +}
1.49 +
1.50 +#pragma warning(disable : 4035) // OK to have no return value
1.51 +// Tell the PDB file this function has a standard frame pointer, and not to use
1.52 +// a custom FPO program.
1.53 +#pragma optimize( "y", off )
1.54 +extern "C" NS_EXPORT nsresult NS_FROZENCALL
1.55 +NS_InvokeByIndex(nsISupports* that, uint32_t methodIndex,
1.56 + uint32_t paramCount, nsXPTCVariant* params)
1.57 +{
1.58 + __asm {
1.59 + mov edx,paramCount // Save paramCount for later
1.60 + test edx,edx // maybe we don't have any params to copy
1.61 + jz noparams
1.62 + mov eax,edx
1.63 + shl eax,3 // *= 8 (max possible param size)
1.64 + sub esp,eax // make space for params
1.65 + mov ecx,esp
1.66 + push params
1.67 + call invoke_copy_to_stack // fastcall, ecx = d, edx = paramCount, params is on the stack
1.68 +noparams:
1.69 + mov ecx,that // instance in ecx
1.70 + push ecx // push this
1.71 + mov edx,[ecx] // vtable in edx
1.72 + mov eax,methodIndex
1.73 + call [edx][eax*4] // stdcall, i.e. callee cleans up stack.
1.74 + mov esp,ebp
1.75 + }
1.76 +}
1.77 +#pragma warning(default : 4035) // restore default
