1 /* Architecture, machine, and model support.
2 Copyright (C) 1997-2015 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
5 This file is part of GDB, the GNU debugger.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 architecture = one of sparc, mips, sh, etc.
22 in the sparc architecture, mach = one of v6, v7, v8, sparclite, etc.
23 in the v8 mach, model = one of supersparc, etc.
26 /* This file is intended to be included by sim-basics.h. */
31 /* Function unit and instruction timing support.
32 ??? This is obviously insufficiently general.
33 It's useful but it needs elaborating upon. */
36 unsigned char name; /* actually a UNIT_TYPE enum */
45 typedef int (MODEL_FN) (sim_cpu *, void *);
48 /* This is an integer that identifies this insn.
49 How this works is up to the target. */
52 /* Function to handle insn-specific profiling. */
55 /* Array of function units used by this insn. */
56 UNIT units[MAX_UNITS];
59 /* Struct to describe various implementation properties of a cpu.
60 When multiple cpu variants are supported, the sizes of some structs
64 /* The size of the SIM_CPU struct. */
66 #define IMP_PROPS_SIM_CPU_SIZE(cpu_props) ((cpu_props)->sim_cpu_size)
67 /* An SCACHE element can vary in size, depending on the selected cpu.
68 This is zero if the SCACHE isn't in use for this variant. */
70 #define IMP_PROPS_SCACHE_ELM_SIZE(cpu_props) ((cpu_props)->scache_elm_size)
71 } MACH_IMP_PROPERTIES;
73 /* A machine variant. */
77 #define MACH_NAME(m) ((m)->name)
78 /* This is the argument to bfd_scan_arch. */
80 #define MACH_BFD_NAME(m) ((m)->bfd_name)
82 #define MACH_NUM(m) ((m)->num)
85 #define MACH_WORD_BITSIZE(m) ((m)->word_bitsize)
87 #define MACH_ADDR_BITSIZE(m) ((m)->addr_bitsize)
89 /* Pointer to null-entry terminated table of models of this mach.
90 The default is the first one. */
91 const struct model *models;
92 #define MACH_MODELS(m) ((m)->models)
94 /* Pointer to the implementation properties of this mach. */
95 const MACH_IMP_PROPERTIES *imp_props;
96 #define MACH_IMP_PROPS(m) ((m)->imp_props)
98 /* Called by sim_model_set when the model of a cpu is set. */
99 void (* init_cpu) (sim_cpu *);
100 #define MACH_INIT_CPU(m) ((m)->init_cpu)
102 /* Initialize the simulator engine for this cpu.
103 Used by cgen simulators to initialize the insn descriptor table. */
104 void (* prepare_run) (sim_cpu *);
105 #define MACH_PREPARE_RUN(m) ((m)->prepare_run)
108 /* A model (implementation) of a machine. */
110 typedef struct model {
112 #define MODEL_NAME(m) ((m)->name)
114 #define MODEL_MACH(m) ((m)->mach)
115 /* An enum that distinguished the model. */
117 #define MODEL_NUM(m) ((m)->num)
118 /* Pointer to timing table for this model. */
119 const INSN_TIMING *timing;
120 #define MODEL_TIMING(m) ((m)->timing)
121 void (* init) (sim_cpu *);
122 #define MODEL_INIT(m) ((m)->init)
125 /* Tables of supported machines. */
126 /* ??? In a simulator of multiple architectures, will need multiple copies of
127 this. Have an `archs' array that contains a pointer to the machs array
128 for each (which in turn has a pointer to the models array for each). */
129 extern const MACH *sim_machs[];
131 /* Model module handlers. */
132 extern MODULE_INSTALL_FN sim_model_install;
134 /* Support routines. */
135 extern void sim_model_set (SIM_DESC sd_, sim_cpu *cpu_, const MODEL *model_);
136 extern const MODEL * sim_model_lookup (const char *name_);
137 extern const MACH * sim_mach_lookup (const char *name_);
138 extern const MACH * sim_mach_lookup_bfd_name (const char *bfd_name_);
140 #endif /* SIM_MODEL_H */