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comparison src/cpu/x86/vm/c1_Defs_x86.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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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 (little endian)
26 enum {
27 pd_lo_word_offset_in_bytes = 0,
28 pd_hi_word_offset_in_bytes = BytesPerWord
29 };
30
31 // explicit rounding operations are required to implement the strictFP mode
32 enum {
33 pd_strict_fp_requires_explicit_rounding = true
34 };
35
36
37 // registers
38 enum {
39 pd_nof_cpu_regs_frame_map = 8, // number of registers used during code emission
40 pd_nof_fpu_regs_frame_map = 8, // number of registers used during code emission
41 pd_nof_xmm_regs_frame_map = 8, // number of registers used during code emission
42 pd_nof_caller_save_cpu_regs_frame_map = 6, // number of registers killed by calls
43 pd_nof_caller_save_fpu_regs_frame_map = 8, // number of registers killed by calls
44 pd_nof_caller_save_xmm_regs_frame_map = 8, // number of registers killed by calls
45
46 pd_nof_cpu_regs_reg_alloc = 6, // number of registers that are visible to register allocator
47 pd_nof_fpu_regs_reg_alloc = 6, // number of registers that are visible to register allocator
48
49 pd_nof_cpu_regs_linearscan = 8, // number of registers visible to linear scan
50 pd_nof_fpu_regs_linearscan = 8, // number of registers visible to linear scan
51 pd_nof_xmm_regs_linearscan = 8, // number of registers visible to linear scan
52 pd_first_cpu_reg = 0,
53 pd_last_cpu_reg = 5,
54 pd_first_byte_reg = 2,
55 pd_last_byte_reg = 5,
56 pd_first_fpu_reg = pd_nof_cpu_regs_frame_map,
57 pd_last_fpu_reg = pd_first_fpu_reg + 7,
58 pd_first_xmm_reg = pd_nof_cpu_regs_frame_map + pd_nof_fpu_regs_frame_map,
59 pd_last_xmm_reg = pd_first_xmm_reg + 7
60 };
61
62
63 // encoding of float value in debug info:
64 enum {
65 pd_float_saved_as_double = true
66 };