The Tor Browser / file comparison
comparison: xpcom/reflect/xptcall/src/md/win32/xptcinvoke.cpp
xpcom/reflect/xptcall/src/md/win32/xptcinvoke.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:6d5df4585127 |
|---|---|
| 1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 /* Platform specific code to invoke XPCOM methods on native objects */ | |
| 7 | |
| 8 #include "xptcprivate.h" | |
| 9 | |
| 10 #ifndef WIN32 | |
| 11 #error "This code is for Win32 only" | |
| 12 #endif | |
| 13 | |
| 14 static void __fastcall | |
| 15 invoke_copy_to_stack(uint32_t* d, uint32_t paramCount, nsXPTCVariant* s) | |
| 16 { | |
| 17 for(; paramCount > 0; paramCount--, d++, s++) | |
| 18 { | |
| 19 if(s->IsPtrData()) | |
| 20 { | |
| 21 *((void**)d) = s->ptr; | |
| 22 continue; | |
| 23 } | |
| 24 switch(s->type) | |
| 25 { | |
| 26 case nsXPTType::T_I8 : *((int8_t*) d) = s->val.i8; break; | |
| 27 case nsXPTType::T_I16 : *((int16_t*) d) = s->val.i16; break; | |
| 28 case nsXPTType::T_I32 : *((int32_t*) d) = s->val.i32; break; | |
| 29 case nsXPTType::T_I64 : *((int64_t*) d) = s->val.i64; d++; break; | |
| 30 case nsXPTType::T_U8 : *((uint8_t*) d) = s->val.u8; break; | |
| 31 case nsXPTType::T_U16 : *((uint16_t*)d) = s->val.u16; break; | |
| 32 case nsXPTType::T_U32 : *((uint32_t*)d) = s->val.u32; break; | |
| 33 case nsXPTType::T_U64 : *((uint64_t*)d) = s->val.u64; d++; break; | |
| 34 case nsXPTType::T_FLOAT : *((float*) d) = s->val.f; break; | |
| 35 case nsXPTType::T_DOUBLE : *((double*) d) = s->val.d; d++; break; | |
| 36 case nsXPTType::T_BOOL : *((bool*) d) = s->val.b; break; | |
| 37 case nsXPTType::T_CHAR : *((char*) d) = s->val.c; break; | |
| 38 case nsXPTType::T_WCHAR : *((wchar_t*) d) = s->val.wc; break; | |
| 39 default: | |
| 40 // all the others are plain pointer types | |
| 41 *((void**)d) = s->val.p; | |
| 42 break; | |
| 43 } | |
| 44 } | |
| 45 } | |
| 46 | |
| 47 #pragma warning(disable : 4035) // OK to have no return value | |
| 48 // Tell the PDB file this function has a standard frame pointer, and not to use | |
| 49 // a custom FPO program. | |
| 50 #pragma optimize( "y", off ) | |
| 51 extern "C" NS_EXPORT nsresult NS_FROZENCALL | |
| 52 NS_InvokeByIndex(nsISupports* that, uint32_t methodIndex, | |
| 53 uint32_t paramCount, nsXPTCVariant* params) | |
| 54 { | |
| 55 __asm { | |
| 56 mov edx,paramCount // Save paramCount for later | |
| 57 test edx,edx // maybe we don't have any params to copy | |
| 58 jz noparams | |
| 59 mov eax,edx | |
| 60 shl eax,3 // *= 8 (max possible param size) | |
| 61 sub esp,eax // make space for params | |
| 62 mov ecx,esp | |
| 63 push params | |
| 64 call invoke_copy_to_stack // fastcall, ecx = d, edx = paramCount, params is on the stack | |
| 65 noparams: | |
| 66 mov ecx,that // instance in ecx | |
| 67 push ecx // push this | |
| 68 mov edx,[ecx] // vtable in edx | |
| 69 mov eax,methodIndex | |
| 70 call [edx][eax*4] // stdcall, i.e. callee cleans up stack. | |
| 71 mov esp,ebp | |
| 72 } | |
| 73 } | |
| 74 #pragma warning(default : 4035) // restore default |
