diff options
Diffstat (limited to '')
| -rw-r--r-- | src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/os2/xptcinvoke_gcc_x86_os2.cpp | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/os2/xptcinvoke_gcc_x86_os2.cpp b/src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/os2/xptcinvoke_gcc_x86_os2.cpp new file mode 100644 index 00000000..6bbb93b0 --- /dev/null +++ b/src/libs/xpcom18a4/xpcom/reflect/xptcall/src/md/os2/xptcinvoke_gcc_x86_os2.cpp @@ -0,0 +1,159 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+/* Platform specific code to invoke XPCOM methods on native objects */
+
+/* This file is basically a copy of xptcinvoke_gcc_x86_unix.cpp with some
+ * irrelevant parts stipped off and some OS/2 specific modifications added,
+ * so it needs to be kept in sync with the original. */
+
+#include "xptcprivate.h"
+#include "xptc_platforms_unixish_x86.h"
+#include "xptc_gcc_x86_unix.h"
+
+extern "C" {
+static
+void ATTRIBUTE_USED __attribute__ ((regparm(3)))
+invoke_copy_to_stack(PRUint32 paramCount, nsXPTCVariant* s, PRUint32* d)
+{
+ for(PRUint32 i = paramCount; i >0; i--, d++, s++)
+ {
+ if(s->IsPtrData())
+ {
+ *((void**)d) = s->ptr;
+ continue;
+ }
+
+ switch(s->type)
+ {
+ case nsXPTType::T_I64 : *((PRInt64*) d) = s->val.i64; d++; break;
+ case nsXPTType::T_U64 : *((PRUint64*)d) = s->val.u64; d++; break;
+ case nsXPTType::T_DOUBLE : *((double*) d) = s->val.d; d++; break;
+ default : *((void**)d) = s->val.p; break;
+ }
+ }
+}
+} // extern "C"
+
+/*
+ XPTC_PUBLIC_API(nsresult)
+ XPTC_InvokeByIndex(nsISupports* that, PRUint32 methodIndex,
+ PRUint32 paramCount, nsXPTCVariant* params);
+
+ Each param takes at most two 4-byte words.
+ It doesn't matter if we push too many words, and calculating the exact
+ amount takes time.
+
+ that = ebp + 0x08
+ methodIndex = ebp + 0x0c
+ paramCount = ebp + 0x10
+ params = ebp + 0x14
+
+ NOTE NOTE NOTE:
+ As of 2002-04-29 this function references no global variables nor does
+ it call non-static functions so preserving and loading the PIC register
+ is unnecessary. Define MOZ_PRESERVE_PIC if this changes. See mozilla
+ bug 140412 for details. However, avoid this if you can. It's slower.
+*/
+
+#if defined(__declspec)
+#define SYMBOL_EXPORT(sym) \
+ ".stabs \"" sym ",0=" sym ",code\", 0x6c,0,0,-42\n\t"
+#else
+#define SYMBOL_EXPORT(sym)
+#endif
+
+__asm__ (
+ ".text\n\t"
+/* alignment here seems unimportant here; this was 16, now it's 2 which
+ is what xptcstubs uses. */
+ ".align 2\n\t"
+ ".globl " SYMBOL_UNDERSCORE "XPTC_InvokeByIndex\n\t"
+ ".type " SYMBOL_UNDERSCORE "XPTC_InvokeByIndex,@function\n"
+ SYMBOL_EXPORT(SYMBOL_UNDERSCORE "XPTC_InvokeByIndex")
+ SYMBOL_UNDERSCORE "XPTC_InvokeByIndex:\n\t"
+ "pushl %ebp\n\t"
+ "movl %esp, %ebp\n\t"
+#ifdef MOZ_PRESERVE_PIC
+ "pushl %ebx\n\t"
+ "call 0f\n\t"
+ ".subsection 1\n"
+ "0:\n\t"
+ "movl (%esp), %ebx\n\t"
+ "ret\n\t"
+ ".previous\n\t"
+ "addl $_GLOBAL_OFFSET_TABLE_, %ebx\n\t"
+#endif
+ "movl 0x10(%ebp), %eax\n\t"
+ "leal 0(,%eax,8),%edx\n\t"
+ "movl %esp, %ecx\n\t"
+ "subl %edx, %ecx\n\t"
+/* Since there may be 64-bit data, it occurs to me that aligning this
+ space might be a performance gain. However, I don't think the rest
+ of mozilla worries about such things. In any event, do it here.
+ "andl $0xfffffff8, %ecx\n\t"
+ */
+ "movl %ecx, %esp\n\t" /* make stack space */
+ "movl 0x14(%ebp), %edx\n\t"
+ "call " SYMBOL_UNDERSCORE "invoke_copy_to_stack\n\t"
+ "movl 0x08(%ebp), %ecx\n\t" /* 'that' */
+#ifdef CFRONT_STYLE_THIS_ADJUST
+ "movl (%ecx), %edx\n\t"
+ "movl 0x0c(%ebp), %eax\n\t" /* function index */
+ "shll $3, %eax\n\t" /* *= 8 */
+ "addl $8, %eax\n\t" /* += 8 skip first entry */
+ "addl %eax, %edx\n\t"
+ "movswl (%edx), %eax\n\t" /* 'this' offset */
+ "addl %eax, %ecx\n\t"
+ "pushl %ecx\n\t"
+ "addl $4, %edx\n\t" /* += 4, method pointer */
+#else /* THUNK_BASED_THIS_ADJUST */
+ "pushl %ecx\n\t"
+ "movl (%ecx), %edx\n\t"
+ "movl 0x0c(%ebp), %eax\n\t" /* function index */
+ "leal (%edx,%eax,4), %edx\n\t"
+#endif
+ "call *(%edx)\n\t"
+#ifdef MOZ_PRESERVE_PIC
+ "movl -4(%ebp), %ebx\n\t"
+#endif
+ "movl %ebp, %esp\n\t"
+ "popl %ebp\n\t"
+ "ret\n"
+ ".size " SYMBOL_UNDERSCORE "XPTC_InvokeByIndex, . -" SYMBOL_UNDERSCORE "XPTC_InvokeByIndex\n\t"
+);
+
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