|
0
|
1 /*
|
|
|
2 * Copyright 1998-2007 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 // machine-dependent implemention for register maps
|
|
|
26 friend class frame;
|
|
|
27
|
|
|
28 private:
|
|
|
29 intptr_t* _window; // register window save area (for L and I regs)
|
|
|
30 intptr_t* _younger_window; // previous save area (for O regs, if needed)
|
|
|
31
|
|
|
32 address pd_location(VMReg reg) const;
|
|
|
33 void pd_clear();
|
|
|
34 void pd_initialize_from(const RegisterMap* map) {
|
|
|
35 _window = map->_window;
|
|
|
36 _younger_window = map->_younger_window;
|
|
|
37 _location_valid[0] = 0; // avoid the shift_individual_registers game
|
|
|
38 }
|
|
|
39 void pd_initialize() {
|
|
|
40 _window = NULL;
|
|
|
41 _younger_window = NULL;
|
|
|
42 _location_valid[0] = 0; // avoid the shift_individual_registers game
|
|
|
43 }
|
|
|
44 void shift_window(intptr_t* sp, intptr_t* younger_sp) {
|
|
|
45 _window = sp;
|
|
|
46 _younger_window = younger_sp;
|
|
|
47 // Throw away locations for %i, %o, and %l registers:
|
|
|
48 // But do not throw away %g register locs.
|
|
|
49 if (_location_valid[0] != 0) shift_individual_registers();
|
|
|
50 }
|
|
|
51 void shift_individual_registers();
|
|
|
52 // When popping out of compiled frames, we make all IRegs disappear.
|
|
|
53 void make_integer_regs_unsaved() { _location_valid[0] = 0; }
|
