1a261f0163
x86Stub.cpp which is Win32-only. git-svn-id: svn://10.0.0.236/trunk@22279 18797224-902f-48f8-a5cc-f745e15eee43
66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef WIN32
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#error "This is a Win32-only file"
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#endif
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#include "NativeCodeCache.h"
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/* Calls to a Java method are routed to this routine, which arranges for
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compilation of the method, backpatching of any involved 'call' instruction,
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and resumption of execution in the compiled method. */
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PR_BEGIN_EXTERN_C
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void __declspec( naked )
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staticCompileStub()
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{
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_asm
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{
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// eax contains the cache entry.
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// make frame
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push ebp
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mov ebp,esp
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/* Even though ESI and EDI are non-volatile (callee-saved) registers, we need to
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preserve them here in case an exception is thrown. The exception-handling
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code expects to encounter this specially-prepared stack "guard" frame when
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unwinding the stack. See x86ExceptionHandler.cpp. */
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push edi
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push esi
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push ebx
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// call compileAndBackPatchMethod with args
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// third argument is not used
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push [esp + 16] // second argument -- return address
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push eax // first argument -- cacheEntry
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call compileAndBackPatchMethod
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// <== compileStubReEntryPoint should point here (the instruction after the call)
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// remove frame
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mov esp,ebp
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pop ebp
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// jump to the compiled method
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jmp eax
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}
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}
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PR_END_EXTERN_C
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