1 /* Architecture, machine, and model support. 2 Copyright (C) 1997, 1998, 1999, 2007, 2008, 2009, 2010, 2011 3 Free Software Foundation, Inc. 4 Contributed by Cygnus Support. 5 6 This file is part of GDB, the GNU debugger. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 3 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 20 21 /* Nomenclature: 22 architecture = one of sparc, mips, sh, etc. 23 in the sparc architecture, mach = one of v6, v7, v8, sparclite, etc. 24 in the v8 mach, model = one of supersparc, etc. 25 */ 26 27 /* This file is intended to be included by sim-basics.h. */ 28 29 #ifndef SIM_MODEL_H 30 #define SIM_MODEL_H 31 32 /* Function unit and instruction timing support. 33 ??? This is obviously insufficiently general. 34 It's useful but it needs elaborating upon. */ 35 36 typedef struct { 37 unsigned char name; /* actually a UNIT_TYPE enum */ 38 unsigned char issue; 39 unsigned char done; 40 } UNIT; 41 42 #ifndef MAX_UNITS 43 #define MAX_UNITS 1 44 #endif 45 46 typedef int (MODEL_FN) (sim_cpu *, void *); 47 48 typedef struct { 49 /* This is an integer that identifies this insn. 50 How this works is up to the target. */ 51 int num; 52 53 /* Function to handle insn-specific profiling. */ 54 MODEL_FN *model_fn; 55 56 /* Array of function units used by this insn. */ 57 UNIT units[MAX_UNITS]; 58 } INSN_TIMING; 59 60 /* Struct to describe various implementation properties of a cpu. 61 When multiple cpu variants are supported, the sizes of some structs 62 can vary. */ 63 64 typedef struct { 65 /* The size of the SIM_CPU struct. */ 66 int sim_cpu_size; 67 #define IMP_PROPS_SIM_CPU_SIZE(cpu_props) ((cpu_props)->sim_cpu_size) 68 /* An SCACHE element can vary in size, depending on the selected cpu. 69 This is zero if the SCACHE isn't in use for this variant. */ 70 int scache_elm_size; 71 #define IMP_PROPS_SCACHE_ELM_SIZE(cpu_props) ((cpu_props)->scache_elm_size) 72 } MACH_IMP_PROPERTIES; 73 74 /* A machine variant. */ 75 76 typedef struct { 77 const char *name; 78 #define MACH_NAME(m) ((m)->name) 79 /* This is the argument to bfd_scan_arch. */ 80 const char *bfd_name; 81 #define MACH_BFD_NAME(m) ((m)->bfd_name) 82 enum mach_attr num; 83 #define MACH_NUM(m) ((m)->num) 84 85 int word_bitsize; 86 #define MACH_WORD_BITSIZE(m) ((m)->word_bitsize) 87 int addr_bitsize; 88 #define MACH_ADDR_BITSIZE(m) ((m)->addr_bitsize) 89 90 /* Pointer to null-entry terminated table of models of this mach. 91 The default is the first one. */ 92 const struct model *models; 93 #define MACH_MODELS(m) ((m)->models) 94 95 /* Pointer to the implementation properties of this mach. */ 96 const MACH_IMP_PROPERTIES *imp_props; 97 #define MACH_IMP_PROPS(m) ((m)->imp_props) 98 99 /* Called by sim_model_set when the model of a cpu is set. */ 100 void (* init_cpu) (sim_cpu *); 101 #define MACH_INIT_CPU(m) ((m)->init_cpu) 102 103 /* Initialize the simulator engine for this cpu. 104 Used by cgen simulators to initialize the insn descriptor table. */ 105 void (* prepare_run) (sim_cpu *); 106 #define MACH_PREPARE_RUN(m) ((m)->prepare_run) 107 } MACH; 108 109 /* A model (implementation) of a machine. */ 110 111 typedef struct model { 112 const char *name; 113 #define MODEL_NAME(m) ((m)->name) 114 const MACH *mach; 115 #define MODEL_MACH(m) ((m)->mach) 116 /* An enum that distinguished the model. */ 117 int num; 118 #define MODEL_NUM(m) ((m)->num) 119 /* Pointer to timing table for this model. */ 120 const INSN_TIMING *timing; 121 #define MODEL_TIMING(m) ((m)->timing) 122 void (* init) (sim_cpu *); 123 #define MODEL_INIT(m) ((m)->init) 124 } MODEL; 125 126 /* Tables of supported machines. */ 127 /* ??? In a simulator of multiple architectures, will need multiple copies of 128 this. Have an `archs' array that contains a pointer to the machs array 129 for each (which in turn has a pointer to the models array for each). */ 130 extern const MACH *sim_machs[]; 131 132 /* Model module handlers. */ 133 extern MODULE_INSTALL_FN sim_model_install; 134 135 /* Support routines. */ 136 extern void sim_model_set (SIM_DESC sd_, sim_cpu *cpu_, const MODEL *model_); 137 extern const MODEL * sim_model_lookup (const char *name_); 138 extern const MACH * sim_mach_lookup (const char *name_); 139 extern const MACH * sim_mach_lookup_bfd_name (const char *bfd_name_); 140 141 #endif /* SIM_MODEL_H */ 142