/* 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 */