0
|
1 /*
|
|
2 * Copyright 2000-2005 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 // native word offsets from memory address (big endian)
|
|
26 enum {
|
|
27 pd_lo_word_offset_in_bytes = BytesPerInt,
|
|
28 pd_hi_word_offset_in_bytes = 0
|
|
29 };
|
|
30
|
|
31
|
|
32 // explicit rounding operations are not required to implement the strictFP mode
|
|
33 enum {
|
|
34 pd_strict_fp_requires_explicit_rounding = false
|
|
35 };
|
|
36
|
|
37
|
|
38 // registers
|
|
39 enum {
|
|
40 pd_nof_cpu_regs_frame_map = 32, // number of registers used during code emission
|
|
41 pd_nof_caller_save_cpu_regs_frame_map = 6, // number of cpu registers killed by calls
|
|
42 pd_nof_cpu_regs_reg_alloc = 20, // number of registers that are visible to register allocator
|
|
43 pd_nof_cpu_regs_linearscan = 32,// number of registers visible linear scan
|
|
44 pd_first_cpu_reg = 0,
|
|
45 pd_last_cpu_reg = 31,
|
|
46 pd_last_allocatable_cpu_reg = 19,
|
|
47 pd_first_callee_saved_reg = 0,
|
|
48 pd_last_callee_saved_reg = 13,
|
|
49
|
|
50 pd_nof_fpu_regs_frame_map = 32, // number of registers used during code emission
|
|
51 pd_nof_caller_save_fpu_regs_frame_map = 32, // number of fpu registers killed by calls
|
|
52 pd_nof_fpu_regs_reg_alloc = 32, // number of registers that are visible to register allocator
|
|
53 pd_nof_fpu_regs_linearscan = 32, // number of registers visible to linear scan
|
|
54 pd_first_fpu_reg = pd_nof_cpu_regs_frame_map,
|
|
55 pd_last_fpu_reg = pd_nof_cpu_regs_frame_map + pd_nof_fpu_regs_frame_map - 1,
|
|
56
|
|
57 pd_nof_xmm_regs_linearscan = 0,
|
|
58 pd_nof_caller_save_xmm_regs = 0,
|
|
59 pd_first_xmm_reg = -1,
|
|
60 pd_last_xmm_reg = -1
|
|
61 };
|
|
62
|
|
63
|
|
64 // for debug info: a float value in a register is saved in single precision by runtime stubs
|
|
65 enum {
|
|
66 pd_float_saved_as_double = false
|
|
67 };
|