| /* Architecture, machine, and model support. |
| Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc. |
| Contributed by Cygnus Support. |
| |
| This file is part of GDB, the GNU debugger. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License along |
| with this program; if not, write to the Free Software Foundation, Inc., |
| 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| /* Nomenclature: |
| architecture = one of sparc, mips, sh, etc. |
| in the sparc architecture, mach = one of v6, v7, v8, sparclite, etc. |
| in the v8 mach, model = one of supersparc, etc. |
| */ |
| |
| /* This file is intended to be included by sim-basics.h. */ |
| |
| #ifndef SIM_MODEL_H |
| #define SIM_MODEL_H |
| |
| /* Function unit and instruction timing support. |
| ??? This is obviously insufficiently general. |
| It's useful but it needs elaborating upon. */ |
| |
| typedef struct { |
| unsigned char name; /* actually a UNIT_TYPE enum */ |
| unsigned char issue; |
| unsigned char done; |
| } UNIT; |
| |
| #ifndef MAX_UNITS |
| #define MAX_UNITS 1 |
| #endif |
| |
| typedef int (MODEL_FN) (sim_cpu *, void *); |
| |
| typedef struct { |
| /* This is an integer that identifies this insn. |
| How this works is up to the target. */ |
| int num; |
| |
| /* Function to handle insn-specific profiling. */ |
| MODEL_FN *model_fn; |
| |
| /* Array of function units used by this insn. */ |
| UNIT units[MAX_UNITS]; |
| } INSN_TIMING; |
| |
| /* Struct to describe various implementation properties of a cpu. |
| When multiple cpu variants are supported, the sizes of some structs |
| can vary. */ |
| |
| typedef struct { |
| /* The size of the SIM_CPU struct. */ |
| int sim_cpu_size; |
| #define IMP_PROPS_SIM_CPU_SIZE(cpu_props) ((cpu_props)->sim_cpu_size) |
| /* An SCACHE element can vary in size, depending on the selected cpu. |
| This is zero if the SCACHE isn't in use for this variant. */ |
| int scache_elm_size; |
| #define IMP_PROPS_SCACHE_ELM_SIZE(cpu_props) ((cpu_props)->scache_elm_size) |
| } MACH_IMP_PROPERTIES; |
| |
| /* A machine variant. */ |
| |
| typedef struct { |
| const char *name; |
| #define MACH_NAME(m) ((m)->name) |
| /* This is the argument to bfd_scan_arch. */ |
| const char *bfd_name; |
| #define MACH_BFD_NAME(m) ((m)->bfd_name) |
| enum mach_attr num; |
| #define MACH_NUM(m) ((m)->num) |
| |
| int word_bitsize; |
| #define MACH_WORD_BITSIZE(m) ((m)->word_bitsize) |
| int addr_bitsize; |
| #define MACH_ADDR_BITSIZE(m) ((m)->addr_bitsize) |
| |
| /* Pointer to null-entry terminated table of models of this mach. |
| The default is the first one. */ |
| const struct model *models; |
| #define MACH_MODELS(m) ((m)->models) |
| |
| /* Pointer to the implementation properties of this mach. */ |
| const MACH_IMP_PROPERTIES *imp_props; |
| #define MACH_IMP_PROPS(m) ((m)->imp_props) |
| |
| /* Called by sim_model_set when the model of a cpu is set. */ |
| void (* init_cpu) (sim_cpu *); |
| #define MACH_INIT_CPU(m) ((m)->init_cpu) |
| |
| /* Initialize the simulator engine for this cpu. |
| Used by cgen simulators to initialize the insn descriptor table. */ |
| void (* prepare_run) (sim_cpu *); |
| #define MACH_PREPARE_RUN(m) ((m)->prepare_run) |
| } MACH; |
| |
| /* A model (implementation) of a machine. */ |
| |
| typedef struct model { |
| const char *name; |
| #define MODEL_NAME(m) ((m)->name) |
| const MACH *mach; |
| #define MODEL_MACH(m) ((m)->mach) |
| /* An enum that distinguished the model. */ |
| int num; |
| #define MODEL_NUM(m) ((m)->num) |
| /* Pointer to timing table for this model. */ |
| const INSN_TIMING *timing; |
| #define MODEL_TIMING(m) ((m)->timing) |
| void (* init) (sim_cpu *); |
| #define MODEL_INIT(m) ((m)->init) |
| } MODEL; |
| |
| /* Tables of supported machines. */ |
| /* ??? In a simulator of multiple architectures, will need multiple copies of |
| this. Have an `archs' array that contains a pointer to the machs array |
| for each (which in turn has a pointer to the models array for each). */ |
| extern const MACH *sim_machs[]; |
| |
| /* Model module handlers. */ |
| extern MODULE_INSTALL_FN sim_model_install; |
| |
| /* Support routines. */ |
| extern void sim_model_set (SIM_DESC sd_, sim_cpu *cpu_, const MODEL *model_); |
| extern const MODEL * sim_model_lookup (const char *name_); |
| extern const MACH * sim_mach_lookup (const char *name_); |
| extern const MACH * sim_mach_lookup_bfd_name (const char *bfd_name_); |
| |
| #endif /* SIM_MODEL_H */ |