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/* Simulator pseudo baseclass.
Copyright 1997-2015 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 3 of the License, 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, see <http://www.gnu.org/licenses/>. */
/* Simulator state pseudo baseclass.
Each simulator is required to have the file ``sim-main.h''. That
file includes ``sim-basics.h'', defines the base type ``sim_cia''
(the data type that contains complete current instruction address
information), include ``sim-base.h'':
#include "sim-basics.h"
/-* If `sim_cia' is not an integral value (e.g. a struct), define
CIA_ADDR to return the integral value. *-/
/-* typedef struct {...} sim_cia; *-/
/-* #define CIA_ADDR(cia) (...) *-/
#include "sim-base.h"
finally, two data types `struct _sim_cpu' and `struct sim_state'
are defined:
struct _sim_cpu {
... simulator specific members ...
sim_cpu_base base;
};
struct sim_state {
sim_cpu *cpu[MAX_NR_PROCESSORS];
... simulator specific members ...
sim_state_base base;
};
Note that `base' appears last. This makes `base.magic' appear last
in the entire struct and helps catch miscompilation errors. */
#ifndef SIM_BASE_H
#define SIM_BASE_H
/* Pre-declare certain types. */
/* typedef <target-dependant> sim_cia; */
#ifndef NULL_CIA
#define NULL_CIA ((sim_cia) 0)
#endif
/* Return the current instruction address as a number.
Some targets treat the current instruction address as a struct
(e.g. for delay slot handling). */
#ifndef CIA_ADDR
#define CIA_ADDR(cia) (cia)
typedef address_word sim_cia;
#endif
#ifndef INVALID_INSTRUCTION_ADDRESS
#define INVALID_INSTRUCTION_ADDRESS ((address_word)0 - 1)
#endif
/* TODO: Probably should just delete SIM_CPU. */
typedef struct _sim_cpu SIM_CPU;
typedef struct _sim_cpu sim_cpu;
#include "sim-module.h"
#include "sim-trace.h"
#include "sim-core.h"
#include "sim-events.h"
#include "sim-profile.h"
#ifdef SIM_HAVE_MODEL
#include "sim-model.h"
#endif
#include "sim-io.h"
#include "sim-engine.h"
#include "sim-watch.h"
#include "sim-memopt.h"
#include "sim-cpu.h"
/* Global pointer to current state while sim_resume is running.
On a machine with lots of registers, it might be possible to reserve
one of them for current_state. However on a machine with few registers
current_state can't permanently live in one and indirecting through it
will be slower [in which case one can have sim_resume set globals from
current_state for faster access].
If CURRENT_STATE_REG is defined, it means current_state is living in
a global register. */
#ifdef CURRENT_STATE_REG
/* FIXME: wip */
#else
extern struct sim_state *current_state;
#endif
/* The simulator may provide different (and faster) definition. */
#ifndef CURRENT_STATE
#define CURRENT_STATE current_state
#endif
/* We require all sims to dynamically allocate cpus. See comment up top about
struct sim_state. */
#if (WITH_SMP)
# define STATE_CPU(sd, n) ((sd)->cpu[n])
#else
# define STATE_CPU(sd, n) ((sd)->cpu[0])
#endif
typedef struct {
/* Simulator's argv[0]. */
const char *my_name;
#define STATE_MY_NAME(sd) ((sd)->base.my_name)
/* Who opened the simulator. */
SIM_OPEN_KIND open_kind;
#define STATE_OPEN_KIND(sd) ((sd)->base.open_kind)
/* The host callbacks. */
struct host_callback_struct *callback;
#define STATE_CALLBACK(sd) ((sd)->base.callback)
/* The type of simulation environment (user/operating). */
enum sim_environment environment;
#define STATE_ENVIRONMENT(sd) ((sd)->base.environment)
#if 0 /* FIXME: Not ready yet. */
/* Stuff defined in sim-config.h. */
struct sim_config config;
#define STATE_CONFIG(sd) ((sd)->base.config)
#endif
/* List of installed module `init' handlers. */
struct module_list *modules;
#define STATE_MODULES(sd) ((sd)->base.modules)
/* Supported options. */
struct option_list *options;
#define STATE_OPTIONS(sd) ((sd)->base.options)
/* Non-zero if -v specified. */
int verbose_p;
#define STATE_VERBOSE_P(sd) ((sd)->base.verbose_p)
/* Non cpu-specific trace data. See sim-trace.h. */
TRACE_DATA trace_data;
#define STATE_TRACE_DATA(sd) (& (sd)->base.trace_data)
/* If non NULL, the BFD architecture specified on the command line */
const struct bfd_arch_info *architecture;
#define STATE_ARCHITECTURE(sd) ((sd)->base.architecture)
/* If non NULL, the bfd target specified on the command line */
const char *target;
#define STATE_TARGET(sd) ((sd)->base.target)
/* In standalone simulator, this is the program's arguments passed
on the command line. */
char **prog_argv;
#define STATE_PROG_ARGV(sd) ((sd)->base.prog_argv)
/* The program's bfd. */
struct bfd *prog_bfd;
#define STATE_PROG_BFD(sd) ((sd)->base.prog_bfd)
/* Symbol table for prog_bfd */
struct bfd_symbol **prog_syms;
#define STATE_PROG_SYMS(sd) ((sd)->base.prog_syms)
/* The program's text section. */
struct bfd_section *text_section;
/* Starting and ending text section addresses from the bfd. */
bfd_vma text_start, text_end;
#define STATE_TEXT_SECTION(sd) ((sd)->base.text_section)
#define STATE_TEXT_START(sd) ((sd)->base.text_start)
#define STATE_TEXT_END(sd) ((sd)->base.text_end)
/* Start address, set when the program is loaded from the bfd. */
bfd_vma start_addr;
#define STATE_START_ADDR(sd) ((sd)->base.start_addr)
/* Size of the simulator's cache, if any.
This is not the target's cache. It is the cache the simulator uses
to process instructions. */
unsigned int scache_size;
#define STATE_SCACHE_SIZE(sd) ((sd)->base.scache_size)
/* FIXME: Move to top level sim_state struct (as some struct)? */
#ifdef SIM_HAVE_FLATMEM
unsigned int mem_size;
#define STATE_MEM_SIZE(sd) ((sd)->base.mem_size)
unsigned int mem_base;
#define STATE_MEM_BASE(sd) ((sd)->base.mem_base)
unsigned char *memory;
#define STATE_MEMORY(sd) ((sd)->base.memory)
#endif
/* core memory bus */
#define STATE_CORE(sd) (&(sd)->base.core)
sim_core core;
/* Record of memory sections added via the memory-options interface. */
#define STATE_MEMOPT(sd) ((sd)->base.memopt)
sim_memopt *memopt;
/* event handler */
#define STATE_EVENTS(sd) (&(sd)->base.events)
sim_events events;
/* generic halt/resume engine */
sim_engine engine;
#define STATE_ENGINE(sd) (&(sd)->base.engine)
/* generic watchpoint support */
sim_watchpoints watchpoints;
#define STATE_WATCHPOINTS(sd) (&(sd)->base.watchpoints)
#if WITH_HW
struct sim_hw *hw;
#define STATE_HW(sd) ((sd)->base.hw)
#endif
/* Should image loads be performed using the LMA or VMA? Older
simulators use the VMA while newer simulators prefer the LMA. */
int load_at_lma_p;
#define STATE_LOAD_AT_LMA_P(SD) ((SD)->base.load_at_lma_p)
/* Marker for those wanting to do sanity checks.
This should remain the last member of this struct to help catch
miscompilation errors. */
int magic;
#define SIM_MAGIC_NUMBER 0x4242
#define STATE_MAGIC(sd) ((sd)->base.magic)
} sim_state_base;
/* Functions for allocating/freeing a sim_state. */
SIM_DESC sim_state_alloc (SIM_OPEN_KIND kind, host_callback *callback);
void sim_state_free (SIM_DESC);
#endif /* SIM_BASE_H */
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