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src/cpu/x86/vm/c1_Defs_x86.hpp@dc7f315e41f7 (annotated)

src/cpu/x86/vm/c1_Defs_x86.hpp

Wed, 27 Aug 2008 00:21:55 -0700

author

never

date

Wed, 27 Aug 2008 00:21:55 -0700

changeset 739

dc7f315e41f7

parent 435

a61af66fc99e

child 772

9ee9cf798b59

permissions

-rw-r--r--

5108146: Merge i486 and amd64 cpu directories
6459804: Want client (c1) compiler for x86_64 (amd64) for faster start-up
Reviewed-by: kvn

duke@435	1	/*
duke@435	2	* Copyright 2000-2005 Sun Microsystems, Inc. All Rights Reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// native word offsets from memory address (little endian)
duke@435	26	enum {
duke@435	27	pd_lo_word_offset_in_bytes = 0,
duke@435	28	pd_hi_word_offset_in_bytes = BytesPerWord
duke@435	29	};
duke@435	30
duke@435	31	// explicit rounding operations are required to implement the strictFP mode
duke@435	32	enum {
duke@435	33	pd_strict_fp_requires_explicit_rounding = true
duke@435	34	};
duke@435	35
duke@435	36
duke@435	37	// registers
duke@435	38	enum {
never@739	39	pd_nof_cpu_regs_frame_map = RegisterImpl::number_of_registers, // number of registers used during code emission
never@739	40	pd_nof_fpu_regs_frame_map = FloatRegisterImpl::number_of_registers, // number of registers used during code emission
never@739	41	pd_nof_xmm_regs_frame_map = XMMRegisterImpl::number_of_registers, // number of registers used during code emission
duke@435	42
never@739	43	#ifdef _LP64
never@739	44	#define UNALLOCATED 4 // rsp, rbp, r15, r10
never@739	45	#else
never@739	46	#define UNALLOCATED 2 // rsp, rbp
never@739	47	#endif // LP64
never@739	48
never@739	49	pd_nof_caller_save_cpu_regs_frame_map = pd_nof_cpu_regs_frame_map - UNALLOCATED, // number of registers killed by calls
never@739	50	pd_nof_caller_save_fpu_regs_frame_map = pd_nof_fpu_regs_frame_map, // number of registers killed by calls
never@739	51	pd_nof_caller_save_xmm_regs_frame_map = pd_nof_xmm_regs_frame_map, // number of registers killed by calls
never@739	52
never@739	53	pd_nof_cpu_regs_reg_alloc = pd_nof_caller_save_cpu_regs_frame_map, // number of registers that are visible to register allocator
duke@435	54	pd_nof_fpu_regs_reg_alloc = 6, // number of registers that are visible to register allocator
duke@435	55
never@739	56	pd_nof_cpu_regs_linearscan = pd_nof_cpu_regs_frame_map, // number of registers visible to linear scan
never@739	57	pd_nof_fpu_regs_linearscan = pd_nof_fpu_regs_frame_map, // number of registers visible to linear scan
never@739	58	pd_nof_xmm_regs_linearscan = pd_nof_xmm_regs_frame_map, // number of registers visible to linear scan
duke@435	59	pd_first_cpu_reg = 0,
never@739	60	pd_last_cpu_reg = NOT_LP64(5) LP64_ONLY(11),
duke@435	61	pd_first_byte_reg = 2,
duke@435	62	pd_last_byte_reg = 5,
duke@435	63	pd_first_fpu_reg = pd_nof_cpu_regs_frame_map,
duke@435	64	pd_last_fpu_reg = pd_first_fpu_reg + 7,
duke@435	65	pd_first_xmm_reg = pd_nof_cpu_regs_frame_map + pd_nof_fpu_regs_frame_map,
never@739	66	pd_last_xmm_reg = pd_first_xmm_reg + pd_nof_xmm_regs_frame_map - 1
duke@435	67	};
duke@435	68
duke@435	69
duke@435	70	// encoding of float value in debug info:
duke@435	71	enum {
duke@435	72	pd_float_saved_as_double = true
duke@435	73	};