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comparison src/os_cpu/linux_sparc/vm/assembler_linux_sparc.cpp @ 133:435e64505015

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6693457: Open-source hotspot linux-sparc support Summary: Move os_cpu/linux_sparc from closed to open Reviewed-by: kamg
author phh
date Thu, 24 Apr 2008 15:07:57 -0400
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children d1605aabd0a1
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122:ec73d88d5b43 133:435e64505015
1 /*
2 * Copyright 1999-2006 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 #include "incls/_precompiled.incl"
26 #include "incls/_assembler_linux_sparc.cpp.incl"
27
28 #include <asm-sparc/traps.h>
29
30 bool MacroAssembler::needs_explicit_null_check(intptr_t offset) {
31 // Since the linux kernel resides at the low end of
32 // user address space, no null pointer check is needed.
33 return offset < 0 || offset >= 0x100000;
34 }
35
36 void MacroAssembler::read_ccr_trap(Register ccr_save) {
37 // No implementation
38 breakpoint_trap();
39 }
40
41 void MacroAssembler::write_ccr_trap(Register ccr_save, Register scratch1, Register scratch2) {
42 // No implementation
43 breakpoint_trap();
44 }
45
46 void MacroAssembler::flush_windows_trap() { trap(SP_TRAP_FWIN); }
47 void MacroAssembler::clean_windows_trap() { trap(SP_TRAP_CWIN); }
48
49 // Use software breakpoint trap until we figure out how to do this on Linux
50 void MacroAssembler::get_psr_trap() { trap(SP_TRAP_SBPT); }
51 void MacroAssembler::set_psr_trap() { trap(SP_TRAP_SBPT); }