src/cpu/x86/vm/c1_Defs_x86.hpp

Wed, 23 Apr 2008 11:20:36 -0700

author
kvn
date
Wed, 23 Apr 2008 11:20:36 -0700
changeset 559
b130b98db9cf
parent 435
a61af66fc99e
child 739
dc7f315e41f7
permissions
-rw-r--r--

6689060: Escape Analysis does not work with Compressed Oops
Summary: 64-bits VM crashes with -XX:+AggresiveOpts (Escape Analysis + Compressed Oops)
Reviewed-by: never, sgoldman

     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  */
    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 };
    31 // explicit rounding operations are required to implement the strictFP mode
    32 enum {
    33   pd_strict_fp_requires_explicit_rounding = true
    34 };
    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
    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
    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 };
    63 // encoding of float value in debug info:
    64 enum {
    65   pd_float_saved_as_double = true
    66 };

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