add support for FreeBSD

ef/Runtime/System/md/x86/Makefile

@@ -50,6 +50,19 @@ LOCAL_MD_EXPORTS_x86 +=  	x86LinuxThread.h			\
 
 endif
 
+ifeq ($(OS_ARCH),FreeBSD)
+ASFILES	=	x86FreeBSDException.s					\
+		x86FreeBSDInvokeNative.s					\
+		$(NULL)
+
+CPPSRCS	+= 	x86FreeBSDThread.cpp					\
+		$(NULL)
+
+LOCAL_MD_EXPORTS_x86 +=  	x86FreeBSDThread.h			\
+				$(NULL)
+
+endif
+
 ifeq ($(OS_ARCH),WINNT)
 CPPSRCS	+= 	Win32ExceptionHandler.cpp                               \
 		x86Win32InvokeNative.cpp				\

ef/Runtime/System/md/x86/x86ExceptionHandler.cpp

@@ -20,7 +20,7 @@
 // simon
 // bjorn
 
-#if defined(_WIN32) || defined(LINUX)
+#if defined(_WIN32) || defined(LINUX) || defined (FREEBSD)
 
 #include "SysCalls.h"
 #include "prprf.h"
@@ -90,8 +90,8 @@ extern "C" SYSCALL_FUNC(JavaObject&) x86NewExceptionInstance(StandardClass class
 
 
 //--------------------------------------------------------------------------------
-// LINUX specific -- FIX make another file for this
-#ifdef LINUX
+// LINUX/FREEBSD specific -- FIX make another file for this
+#if defined( LINUX ) || defined( FREEBSD )
 
 extern "C"
 {

ef/Runtime/System/md/x86/x86FreeBSDThread.cpp

@@ -0,0 +1,170 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+#include <unistd.h>
+#if 0
+#include <sys/ptrace.h>
+#endif
+#include <assert.h>
+#include <signal.h>
+#ifdef _REENTRANT
+#include <pthread.h>
+#endif
+#if 0
+#include <linux/ptrace.h>
+#include <sys/user.h>
+#endif
+#include "Thread.h"
+#include "NativeCodeCache.h"
+#include "Exceptions.h"
+
+// Supend the thread specified by the pid
+void _suspendThread(HANDLE  handle) 
+{
+#ifdef _REENTRANT
+    if (pthread_kill(handle, SIGKILL) == -1) {
+		assert(0);
+    }
+#endif
+}
+
+// Resume the thread specified by the pid
+void _resumeThread(HANDLE  handle) 
+{
+#ifdef _REENTRANT
+    if (pthread_kill(handle, SIGCONT) == -1) {
+		assert(0);
+    }
+#endif
+}
+
+// Gets the thread context via ptrace
+bool 
+_getThreadContext(HANDLE handle, ThreadContext& context) 
+{
+#if 0
+    if (ptrace(PTRACE_ATTACH, handle, NULL, NULL) == -1)
+		assert(0);
+    if (ptrace(PTRACE_PEEKUSR, handle, offsetof(struct user, regs), &context) 
+		== -1)
+		assert(0);
+    
+#endif
+    return true;
+}
+
+// Sets the thread context via ptrace
+void 
+_setThreadContext(HANDLE handle, ThreadContext &context) 
+{
+#if 0
+    if (ptrace(PTRACE_ATTACH, handle, NULL, NULL) == -1)
+		assert(0);
+    if (ptrace(PTRACE_POKEUSR, handle, offsetof(struct user, regs), &context) 
+	== -1)
+		assert(0);
+#endif
+}
+
+Int32* 
+_getFramePointer(ThreadContext& context) 
+{
+	return (Int32 *) context.sc_ebp; 
+}
+
+void _setFramePointer(ThreadContext& context, Int32* v) 
+{
+	context.sc_ebp = (long) v;
+}
+
+Uint8* 
+_getInstructionPointer(ThreadContext &context) 
+{
+	return (Uint8*)context.sc_eip;
+}
+
+void 
+_setInstructionPointer(ThreadContext& context, Uint8 *v) 
+{
+	context.sc_eip = (long) v;
+}
+
+void Thread::realHandle() 
+{     
+	// sets up the OS handles
+	HANDLE thr = getpid();
+}
+
+/*	
+	Special invoke for threads.
+
+	We prepare the stack for a newborn thread as follows.  First we push
+	the hardware exception handler (as {previous handler, new handler}),
+	and set fs:[0] to point to this structure. This will make win32 call
+	new handler when a hardware exception fires (/0, *NULL, or illegal
+	instruction).
+
+	Second, we push EBP as it it is upon entry to this routine, followed
+	by a pointer to uncaughtException, followed by the sentinel
+	NULL. Then we prepare to call __invoke() which corresponds to
+	Method::invoke() by pushing the arguments in reverse order. Now,
+	regardless whether invoke() returns normally or through an uncaught
+	exception, we will return to the line 'add esp,24' which is where we
+	clean up afterwards.
+
+	For the entry set-up to uncaughtException() see
+	uncaughtExceptionExit() in x86Win32ExceptionHandler.cpp in
+	Runtime/System/md/x86.  
+*/
+
+// called by Thread::invoke() and is only used to avoid assuming a calling
+// convention for C++ methods.
+static void 
+__invoke(Method* m, JavaObject* obj, JavaObject* arr[], int sz) 
+{
+	m->invoke(obj,arr,sz);
+}
+
+void
+Thread::invoke(Method* m, JavaObject* obj, JavaObject* arr[], int sz) 
+{
+/*
+	DWORD w32 = (DWORD)win32HardwareThrow;
+	DWORD uE = (DWORD)uncaughtException;
+	__asm {
+		push w32
+		push fs:[0]
+		mov fs:[0],esp
+		push ebp
+		push uE
+		push NULL
+		mov ecx,esp
+		push sz
+		push arr
+		push obj
+		push m
+		mov ebp,ecx
+		call __invoke
+		add esp,24 // pop 4 arguments, NULL, and uncaughtException
+		pop ebp
+		pop ecx
+		mov fs:[0],ecx
+		pop ecx  // pop win32HardwareThrow
+	}
+*/
+	m->invoke(obj,arr,sz);
+}

ef/Runtime/System/md/x86/x86FreeBSDThread.h

@@ -0,0 +1,27 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+#ifndef _X86_LINUX_THREAD_H_
+#define _X86_LINUX_THREAD_H_
+
+#include "ExceptionTable.h"
+#include "Monitor.h"
+#include "FieldOrMethod.h"
+
+#define GetPassedException(E) __asm__("mov %%ecx, %0" : : "g"(E))
+
+#endif // _X86_LINUX_THREAD_H_

ef/Runtime/System/md/x86/x86Win32ExceptionHandler.h

@@ -19,12 +19,14 @@
 //
 // simon
 
-#if defined(_WIN32) || defined(LINUX)
+#if defined(_WIN32) || defined(LINUX) || defined(FREEBSD)
 
 #ifndef _X86WIN32_EXCEPTION_H_
 #define _X86WIN32_EXCEPTION_H_
 
+#if defined(_WIN32)
 #include <excpt.h>
+#endif
 
 #include "SysCallsRuntime.h"
 #include "Fundamentals.h"
@@ -58,7 +60,7 @@ struct Context
 	JavaObject* object;
 };
 
-#ifndef LINUX
+#if !defined( LINUX ) && !defined( FREEBSD )
 NS_EXTERN EXCEPTION_DISPOSITION win32HardwareThrow(struct _EXCEPTION_RECORD *ExceptionRecord,
 					void * EstablisherFrame,
 					struct _CONTEXT *ContextRecord,