old-cross-binutils/sim/common/sim-base.h

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/* Simulator pseudo baseclass.
Copyright (C) 1997-1998 Free Software Foundation, Inc.
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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. */
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/* 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'':
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#include "sim-basics.h"
typedef address_word sim_cia;
/-* If `sim_cia' is not an integral value (e.g. a struct), define
CIA_ADDR to return the integral value. *-/
/-* #define CIA_ADDR(cia) (...) *-/
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#include "sim-base.h"
finally, two data types `struct _sim_cpu' and `struct sim_state'
are defined:
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struct _sim_cpu {
... simulator specific members ...
sim_cpu_base base;
};
struct sim_state {
sim_cpu cpu[MAX_NR_PROCESSORS];
#if (WITH_SMP)
#define STATE_CPU(sd,n) (&(sd)->cpu[n])
#else
#define STATE_CPU(sd,n) (&(sd)->cpu[0])
#endif
... 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. */
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#ifndef SIM_BASE_H
#define SIM_BASE_H
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/* 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)
#endif
#ifndef INVALID_INSTRUCTION_ADDRESS
#define INVALID_INSTRUCTION_ADDRESS ((address_word)0 - 1)
#endif
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typedef struct _sim_cpu sim_cpu;
#include "sim-module.h"
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#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
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#include "sim-io.h"
#include "sim-engine.h"
#include "sim-watch.h"
#include "sim-memopt.h"
#ifdef SIM_HAVE_BREAKPOINTS
#include "sim-break.h"
#endif
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/* 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. */
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#ifdef CURRENT_STATE_REG
/* FIXME: wip */
#else
extern struct sim_state *current_state;
#endif
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/* The simulator may provide different (and faster) definition. */
#ifndef CURRENT_STATE
#define CURRENT_STATE current_state
#endif
typedef struct {
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/* 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)
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#if 0 /* FIXME: Not ready yet. */
/* Stuff defined in sim-config.h. */
struct sim_config config;
#define STATE_CONFIG(sd) ((sd)->base.config)
#endif
* Makefile.in (sim-options_h): Define. (sim-{module,options,trace,profile,utils}.o): Clean up dependencies. (sim-model.o): Add new rule. (cgen-{scache,trace,utils}.o): Add new rules. * aclocal.m4 (SIM_AC_OPTION_{SCACHE,DEFAULT_MODEL}): Add. * cgen-scache.c (scache_print_profile): Change `sd' arg to `cpu'. Indent output by 2 spaces. * cgen-scache.h (scache_print_profile): Update. * cgen-trace.c (trace_insn_fini): Indent output by 2 spaces. Use trace_printf, not fprintf. (trace_extract): Use trace_printf, not cgen_trace_printf. * genmloop.sh (!FAST case): Increment `insn_count'. * sim-base.h (sim_state_base): Only include scache_size if WITH_SCACHE. (sim_cpu_base): Rename member `sd' to `state' to be consistent with access macro's name. * sim-core.c (sim_core_init): Use EXTERN_SIM_CORE to define it. Change return type to SIM_RC. (sim_core_{install,uninstall}): New functions. * sim-core.h (sim_core_{install,uninstall}): Declare. (sim_core_init): Use EXTERN_SIM_CORE to define it. Change return type to SIM_RC. * sim-model.h (models,machs,model_install): Declare. * sim-module.c (modules): Add scache_install, model_install. (sim_post_argv_init): Set cpu->state backlinks. * sim-options.c (standard_options): Delete --simcache-size,--max-insns. (standard_option_handler): Likewise. * sim-profile.c (PROFILE_{HISTOGRAM,LABEL}_WIDTH): Move to sim-profile.h. (*): Assume ANSI C. (profile_options): Delete --profile-simcache. (profile_option_handler): Likewise. (profile_print_insn): Change `sd' arg to `cpu'. Indent output 2 spaces. (profile_print_{memory,model}): Likewise. (profile_print_simcache): Delete. (profile_print_speed): New function. (profile_print): Rewrite. * sim-profile.h (PROFILE_scache): Renamed from PROFILE_simcache. (WITH_PROFILE_SCACHE_P): Renamed from WITH_PROFILE_SIMCACHE_P. (PROFILE_DATA): Delete members simcache_{hits,misses}. (PROFILE_COUNT_SIMCACHE_{HIT,MISS}): Delete. (PROFILE_{CALLBACK,CPU_CALLBACK}): New types. (profile_print): Update prototype.
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/* List of installed module `init' handlers. */
struct module_list *modules;
#define STATE_MODULES(sd) ((sd)->base.modules)
* Makefile.in (sim-options_h): Define. (sim-{module,options,trace,profile,utils}.o): Clean up dependencies. (sim-model.o): Add new rule. (cgen-{scache,trace,utils}.o): Add new rules. * aclocal.m4 (SIM_AC_OPTION_{SCACHE,DEFAULT_MODEL}): Add. * cgen-scache.c (scache_print_profile): Change `sd' arg to `cpu'. Indent output by 2 spaces. * cgen-scache.h (scache_print_profile): Update. * cgen-trace.c (trace_insn_fini): Indent output by 2 spaces. Use trace_printf, not fprintf. (trace_extract): Use trace_printf, not cgen_trace_printf. * genmloop.sh (!FAST case): Increment `insn_count'. * sim-base.h (sim_state_base): Only include scache_size if WITH_SCACHE. (sim_cpu_base): Rename member `sd' to `state' to be consistent with access macro's name. * sim-core.c (sim_core_init): Use EXTERN_SIM_CORE to define it. Change return type to SIM_RC. (sim_core_{install,uninstall}): New functions. * sim-core.h (sim_core_{install,uninstall}): Declare. (sim_core_init): Use EXTERN_SIM_CORE to define it. Change return type to SIM_RC. * sim-model.h (models,machs,model_install): Declare. * sim-module.c (modules): Add scache_install, model_install. (sim_post_argv_init): Set cpu->state backlinks. * sim-options.c (standard_options): Delete --simcache-size,--max-insns. (standard_option_handler): Likewise. * sim-profile.c (PROFILE_{HISTOGRAM,LABEL}_WIDTH): Move to sim-profile.h. (*): Assume ANSI C. (profile_options): Delete --profile-simcache. (profile_option_handler): Likewise. (profile_print_insn): Change `sd' arg to `cpu'. Indent output 2 spaces. (profile_print_{memory,model}): Likewise. (profile_print_simcache): Delete. (profile_print_speed): New function. (profile_print): Rewrite. * sim-profile.h (PROFILE_scache): Renamed from PROFILE_simcache. (WITH_PROFILE_SCACHE_P): Renamed from WITH_PROFILE_SIMCACHE_P. (PROFILE_DATA): Delete members simcache_{hits,misses}. (PROFILE_COUNT_SIMCACHE_{HIT,MISS}): Delete. (PROFILE_{CALLBACK,CPU_CALLBACK}): New types. (profile_print): Update prototype.
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/* 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 symbol_cache_entry **prog_syms;
#define STATE_PROG_SYMS(sd) ((sd)->base.prog_syms)
/* The program's text section. */
struct sec *text_section;
/* Starting and ending text section addresses from the bfd. */
SIM_ADDR 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. */
SIM_ADDR 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. */
* Makefile.in (sim-options_h): Define. (sim-{module,options,trace,profile,utils}.o): Clean up dependencies. (sim-model.o): Add new rule. (cgen-{scache,trace,utils}.o): Add new rules. * aclocal.m4 (SIM_AC_OPTION_{SCACHE,DEFAULT_MODEL}): Add. * cgen-scache.c (scache_print_profile): Change `sd' arg to `cpu'. Indent output by 2 spaces. * cgen-scache.h (scache_print_profile): Update. * cgen-trace.c (trace_insn_fini): Indent output by 2 spaces. Use trace_printf, not fprintf. (trace_extract): Use trace_printf, not cgen_trace_printf. * genmloop.sh (!FAST case): Increment `insn_count'. * sim-base.h (sim_state_base): Only include scache_size if WITH_SCACHE. (sim_cpu_base): Rename member `sd' to `state' to be consistent with access macro's name. * sim-core.c (sim_core_init): Use EXTERN_SIM_CORE to define it. Change return type to SIM_RC. (sim_core_{install,uninstall}): New functions. * sim-core.h (sim_core_{install,uninstall}): Declare. (sim_core_init): Use EXTERN_SIM_CORE to define it. Change return type to SIM_RC. * sim-model.h (models,machs,model_install): Declare. * sim-module.c (modules): Add scache_install, model_install. (sim_post_argv_init): Set cpu->state backlinks. * sim-options.c (standard_options): Delete --simcache-size,--max-insns. (standard_option_handler): Likewise. * sim-profile.c (PROFILE_{HISTOGRAM,LABEL}_WIDTH): Move to sim-profile.h. (*): Assume ANSI C. (profile_options): Delete --profile-simcache. (profile_option_handler): Likewise. (profile_print_insn): Change `sd' arg to `cpu'. Indent output 2 spaces. (profile_print_{memory,model}): Likewise. (profile_print_simcache): Delete. (profile_print_speed): New function. (profile_print): Rewrite. * sim-profile.h (PROFILE_scache): Renamed from PROFILE_simcache. (WITH_PROFILE_SCACHE_P): Renamed from WITH_PROFILE_SIMCACHE_P. (PROFILE_DATA): Delete members simcache_{hits,misses}. (PROFILE_COUNT_SIMCACHE_{HIT,MISS}): Delete. (PROFILE_{CALLBACK,CPU_CALLBACK}): New types. (profile_print): Update prototype.
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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
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/* core memory bus */
#define STATE_CORE(sd) (&(sd)->base.core)
sim_core core;
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/* Record of memory sections added via the memory-options interface. */
#define STATE_MEMOPT(sd) ((sd)->base.memopt)
sim_memopt *memopt;
/* start-sanitize-sky */
#ifdef TARGET_SKY
#ifdef SKY_FUNIT
/* Record of option for floating point implementation type. */
#define STATE_FP_TYPE_OPT(sd) ((sd)->base.fp_type_opt)
#define STATE_FP_TYPE_OPT_TARGET 0x80000000
int fp_type_opt;
#endif
#endif
/* end-sanitize-sky */
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/* 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)
/* Pointer to list of breakpoints */
struct sim_breakpoint *breakpoints;
#define STATE_BREAKPOINTS(sd) ((sd)->base.breakpoints)
/* start-sanitize-am30 */
#if WITH_HW
struct sim_hw *hw;
#define STATE_HW(sd) ((sd)->base.hw)
#endif
/* end-sanitize-am30 */
/* 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;
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/* Pseudo baseclass for each cpu. */
typedef struct {
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/* Backlink to main state struct. */
* Makefile.in (sim-options_h): Define. (sim-{module,options,trace,profile,utils}.o): Clean up dependencies. (sim-model.o): Add new rule. (cgen-{scache,trace,utils}.o): Add new rules. * aclocal.m4 (SIM_AC_OPTION_{SCACHE,DEFAULT_MODEL}): Add. * cgen-scache.c (scache_print_profile): Change `sd' arg to `cpu'. Indent output by 2 spaces. * cgen-scache.h (scache_print_profile): Update. * cgen-trace.c (trace_insn_fini): Indent output by 2 spaces. Use trace_printf, not fprintf. (trace_extract): Use trace_printf, not cgen_trace_printf. * genmloop.sh (!FAST case): Increment `insn_count'. * sim-base.h (sim_state_base): Only include scache_size if WITH_SCACHE. (sim_cpu_base): Rename member `sd' to `state' to be consistent with access macro's name. * sim-core.c (sim_core_init): Use EXTERN_SIM_CORE to define it. Change return type to SIM_RC. (sim_core_{install,uninstall}): New functions. * sim-core.h (sim_core_{install,uninstall}): Declare. (sim_core_init): Use EXTERN_SIM_CORE to define it. Change return type to SIM_RC. * sim-model.h (models,machs,model_install): Declare. * sim-module.c (modules): Add scache_install, model_install. (sim_post_argv_init): Set cpu->state backlinks. * sim-options.c (standard_options): Delete --simcache-size,--max-insns. (standard_option_handler): Likewise. * sim-profile.c (PROFILE_{HISTOGRAM,LABEL}_WIDTH): Move to sim-profile.h. (*): Assume ANSI C. (profile_options): Delete --profile-simcache. (profile_option_handler): Likewise. (profile_print_insn): Change `sd' arg to `cpu'. Indent output 2 spaces. (profile_print_{memory,model}): Likewise. (profile_print_simcache): Delete. (profile_print_speed): New function. (profile_print): Rewrite. * sim-profile.h (PROFILE_scache): Renamed from PROFILE_simcache. (WITH_PROFILE_SCACHE_P): Renamed from WITH_PROFILE_SIMCACHE_P. (PROFILE_DATA): Delete members simcache_{hits,misses}. (PROFILE_COUNT_SIMCACHE_{HIT,MISS}): Delete. (PROFILE_{CALLBACK,CPU_CALLBACK}): New types. (profile_print): Update prototype.
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SIM_DESC state;
#define CPU_STATE(cpu) ((cpu)->base.state)
/* Processor index within the SD_DESC */
int index;
#define CPU_INDEX(cpu) ((cpu)->base.index)
/* The name of the cpu. */
const char *name;
#define CPU_NAME(cpu) ((cpu)->base.name)
/* Options specific to this cpu. */
struct option_list *options;
#define CPU_OPTIONS(cpu) ((cpu)->base.options)
/* Processor specific core data */
sim_cpu_core core;
#define CPU_CORE(cpu) (& (cpu)->base.core)
* Makefile.in (sim-options_h): Define. (sim-{module,options,trace,profile,utils}.o): Clean up dependencies. (sim-model.o): Add new rule. (cgen-{scache,trace,utils}.o): Add new rules. * aclocal.m4 (SIM_AC_OPTION_{SCACHE,DEFAULT_MODEL}): Add. * cgen-scache.c (scache_print_profile): Change `sd' arg to `cpu'. Indent output by 2 spaces. * cgen-scache.h (scache_print_profile): Update. * cgen-trace.c (trace_insn_fini): Indent output by 2 spaces. Use trace_printf, not fprintf. (trace_extract): Use trace_printf, not cgen_trace_printf. * genmloop.sh (!FAST case): Increment `insn_count'. * sim-base.h (sim_state_base): Only include scache_size if WITH_SCACHE. (sim_cpu_base): Rename member `sd' to `state' to be consistent with access macro's name. * sim-core.c (sim_core_init): Use EXTERN_SIM_CORE to define it. Change return type to SIM_RC. (sim_core_{install,uninstall}): New functions. * sim-core.h (sim_core_{install,uninstall}): Declare. (sim_core_init): Use EXTERN_SIM_CORE to define it. Change return type to SIM_RC. * sim-model.h (models,machs,model_install): Declare. * sim-module.c (modules): Add scache_install, model_install. (sim_post_argv_init): Set cpu->state backlinks. * sim-options.c (standard_options): Delete --simcache-size,--max-insns. (standard_option_handler): Likewise. * sim-profile.c (PROFILE_{HISTOGRAM,LABEL}_WIDTH): Move to sim-profile.h. (*): Assume ANSI C. (profile_options): Delete --profile-simcache. (profile_option_handler): Likewise. (profile_print_insn): Change `sd' arg to `cpu'. Indent output 2 spaces. (profile_print_{memory,model}): Likewise. (profile_print_simcache): Delete. (profile_print_speed): New function. (profile_print): Rewrite. * sim-profile.h (PROFILE_scache): Renamed from PROFILE_simcache. (WITH_PROFILE_SCACHE_P): Renamed from WITH_PROFILE_SIMCACHE_P. (PROFILE_DATA): Delete members simcache_{hits,misses}. (PROFILE_COUNT_SIMCACHE_{HIT,MISS}): Delete. (PROFILE_{CALLBACK,CPU_CALLBACK}): New types. (profile_print): Update prototype.
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/* Trace data. See sim-trace.h. */
TRACE_DATA trace_data;
#define CPU_TRACE_DATA(cpu) (& (cpu)->base.trace_data)
/* Maximum number of debuggable entities.
This debugging is not intended for normal use.
It is only enabled when the simulator is configured with --with-debug
which shouldn't normally be specified. */
#ifndef MAX_DEBUG_VALUES
#define MAX_DEBUG_VALUES 4
#endif
/* Boolean array of specified debugging flags. */
char debug_flags[MAX_DEBUG_VALUES];
#define CPU_DEBUG_FLAGS(cpu) ((cpu)->base.debug_flags)
/* Standard values. */
#define DEBUG_INSN_IDX 0
#define DEBUG_NEXT_IDX 2 /* simulator specific debug bits begin here */
/* Debugging output goes to this or stderr if NULL.
We can't store `stderr' here as stderr goes through a callback. */
FILE *debug_file;
#define CPU_DEBUG_FILE(cpu) ((cpu)->base.debug_file)
* Makefile.in (sim-options_h): Define. (sim-{module,options,trace,profile,utils}.o): Clean up dependencies. (sim-model.o): Add new rule. (cgen-{scache,trace,utils}.o): Add new rules. * aclocal.m4 (SIM_AC_OPTION_{SCACHE,DEFAULT_MODEL}): Add. * cgen-scache.c (scache_print_profile): Change `sd' arg to `cpu'. Indent output by 2 spaces. * cgen-scache.h (scache_print_profile): Update. * cgen-trace.c (trace_insn_fini): Indent output by 2 spaces. Use trace_printf, not fprintf. (trace_extract): Use trace_printf, not cgen_trace_printf. * genmloop.sh (!FAST case): Increment `insn_count'. * sim-base.h (sim_state_base): Only include scache_size if WITH_SCACHE. (sim_cpu_base): Rename member `sd' to `state' to be consistent with access macro's name. * sim-core.c (sim_core_init): Use EXTERN_SIM_CORE to define it. Change return type to SIM_RC. (sim_core_{install,uninstall}): New functions. * sim-core.h (sim_core_{install,uninstall}): Declare. (sim_core_init): Use EXTERN_SIM_CORE to define it. Change return type to SIM_RC. * sim-model.h (models,machs,model_install): Declare. * sim-module.c (modules): Add scache_install, model_install. (sim_post_argv_init): Set cpu->state backlinks. * sim-options.c (standard_options): Delete --simcache-size,--max-insns. (standard_option_handler): Likewise. * sim-profile.c (PROFILE_{HISTOGRAM,LABEL}_WIDTH): Move to sim-profile.h. (*): Assume ANSI C. (profile_options): Delete --profile-simcache. (profile_option_handler): Likewise. (profile_print_insn): Change `sd' arg to `cpu'. Indent output 2 spaces. (profile_print_{memory,model}): Likewise. (profile_print_simcache): Delete. (profile_print_speed): New function. (profile_print): Rewrite. * sim-profile.h (PROFILE_scache): Renamed from PROFILE_simcache. (WITH_PROFILE_SCACHE_P): Renamed from WITH_PROFILE_SIMCACHE_P. (PROFILE_DATA): Delete members simcache_{hits,misses}. (PROFILE_COUNT_SIMCACHE_{HIT,MISS}): Delete. (PROFILE_{CALLBACK,CPU_CALLBACK}): New types. (profile_print): Update prototype.
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/* Profile data. See sim-profile.h. */
PROFILE_DATA profile_data;
#define CPU_PROFILE_DATA(cpu) (& (cpu)->base.profile_data)
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#ifdef SIM_HAVE_MODEL
/* Machine tables for this cpu. See sim-model.h. */
const MACH *mach;
#define CPU_MACH(cpu) ((cpu)->base.mach)
/* The selected model. */
const MODEL *model;
#define CPU_MODEL(cpu) ((cpu)->base.model)
#endif
} sim_cpu_base;
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/* Functions for allocating/freeing a sim_state. */
SIM_DESC sim_state_alloc PARAMS ((SIM_OPEN_KIND kind, host_callback *callback));
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void sim_state_free PARAMS ((SIM_DESC));
/* Return a pointer to the cpu data for CPU_NAME, or NULL if not found. */
sim_cpu *sim_cpu_lookup (SIM_DESC sd, const char *cpu_name);
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#endif /* SIM_BASE_H */