annotate src/os_cpu/linux_sparc/vm/assembler_linux_sparc.cpp @ 122:435e64505015

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