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/* run front end support for arm
Copyright (C) 1995, 1996 Free Software Foundation, Inc.
This file is part of ARM SIM.
GNU CC 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.
GNU CC 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. */
/* This file provides the interface between the simulator and run.c and gdb
(when the simulator is linked with gdb).
All simulator interaction should go through this file. */
#include <stdio.h>
#include <stdarg.h>
#include <bfd.h>
#include <signal.h>
#include "callback.h"
#include "remote-sim.h"
#include "armdefs.h"
#include "armemu.h"
#include "dbg_rdi.h"
host_callback *sim_callback;
static struct ARMul_State *state;
/* Memory size in bytes. */
static int mem_size = (1 << 21);
/* Non-zero to display start up banner, and maybe other things. */
static int verbosity;
static void
init ()
{
static int done;
if (!done)
{
ARMul_EmulateInit();
state = ARMul_NewState ();
ARMul_MemoryInit(state, mem_size);
ARMul_OSInit(state);
ARMul_CoProInit(state);
state->verbose = verbosity;
done = 1;
}
}
/* Set verbosity level of simulator.
This is not intended to produce detailed tracing or debugging information.
Just summaries. */
/* FIXME: common/run.c doesn't do this yet. */
void
sim_set_verbose (v)
int v;
{
verbosity = v;
}
/* Set the memory size to SIZE bytes.
Must be called before initializing simulator. */
/* FIXME: Rename to sim_set_mem_size. */
void
sim_size (size)
int size;
{
mem_size = size;
}
void
ARMul_ConsolePrint (ARMul_State * state, const char *format,...)
{
va_list ap;
if (state->verbose)
{
va_start (ap, format);
vprintf (format, ap);
va_end (ap);
}
}
ARMword
ARMul_Debug (ARMul_State * state, ARMword pc, ARMword instr)
{
}
int
sim_write (sd, addr, buffer, size)
SIM_DESC sd;
SIM_ADDR addr;
unsigned char *buffer;
int size;
{
int i;
init ();
for (i = 0; i < size; i++)
{
ARMul_WriteByte (state, addr+i, buffer[i]);
}
return size;
}
int
sim_read (sd, addr, buffer, size)
SIM_DESC sd;
SIM_ADDR addr;
unsigned char *buffer;
int size;
{
int i;
init ();
for (i = 0; i < size; i++)
{
buffer[i] = ARMul_ReadByte (state, addr + i);
}
return size;
}
int
sim_trace (sd)
SIM_DESC sd;
{
(*sim_callback->printf_filtered) (sim_callback, "This simulator does not support tracing\n");
return 1;
}
void
sim_resume (sd, step, siggnal)
SIM_DESC sd;
int step, siggnal;
{
state->EndCondition = 0;
if (step)
{
state->Reg[15] = ARMul_DoInstr (state);
if (state->EndCondition == 0)
state->EndCondition = RDIError_BreakpointReached;
}
else
{
state->Reg[15] = ARMul_DoProg (state);
}
FLUSHPIPE;
}
void
sim_create_inferior (sd, start_address, argv, env)
SIM_DESC sd;
SIM_ADDR start_address;
char **argv;
char **env;
{
ARMul_SetPC(state, start_address);
}
void
sim_info (sd, verbose)
SIM_DESC sd;
int verbose;
{
}
static int
frommem (state, memory)
struct ARMul_State *state;
unsigned char *memory;
{
if (state->bigendSig == HIGH)
{
return (memory[0] << 24)
| (memory[1] << 16)
| (memory[2] << 8)
| (memory[3] << 0);
}
else
{
return (memory[3] << 24)
| (memory[2] << 16)
| (memory[1] << 8)
| (memory[0] << 0);
}
}
static void
tomem (state, memory, val)
struct ARMul_State *state;
unsigned char *memory;
int val;
{
if (state->bigendSig == HIGH)
{
memory[0] = val >> 24;
memory[1] = val >> 16;
memory[2] = val >> 8;
memory[3] = val >> 0;
}
else
{
memory[3] = val >> 24;
memory[2] = val >> 16;
memory[1] = val >> 8;
memory[0] = val >> 0;
}
}
void
sim_store_register (sd, rn, memory)
SIM_DESC sd;
int rn;
unsigned char *memory;
{
init ();
ARMul_SetReg(state, state->Mode, rn, frommem (state, memory));
}
void
sim_fetch_register (sd, rn, memory)
SIM_DESC sd;
int rn;
unsigned char *memory;
{
init ();
tomem (state, memory, ARMul_GetReg(state, state->Mode, rn));
}
SIM_DESC
sim_open (kind, argv)
SIM_OPEN_KIND kind;
char **argv;
{
/* (*sim_callback->error) (sim_callback, "testing 1 2 3\n");*/
/* nothing to do, fudge our descriptor */
return (SIM_DESC) 1;
}
void
sim_close (sd, quitting)
SIM_DESC sd;
int quitting;
{
/* nothing to do */
}
int
sim_load (sd, prog, from_tty)
SIM_DESC sd;
char *prog;
int from_tty;
{
/* Return nonzero so GDB will handle it. */
return 1;
}
void
sim_stop_reason (sd, reason, sigrc)
SIM_DESC sd;
enum sim_stop *reason;
int *sigrc;
{
if (state->EndCondition == 0)
{
*reason = sim_exited;
*sigrc = state->Reg[0] & 255;
}
else
{
*reason = sim_stopped;
if (state->EndCondition == RDIError_BreakpointReached)
*sigrc = SIGTRAP;
else
*sigrc = 0;
}
}
void
sim_kill (sd)
SIM_DESC sd;
{
/* nothing to do */
}
void
sim_do_command (sd, cmd)
SIM_DESC sd;
char *cmd;
{
(*sim_callback->printf_filtered) (sim_callback, "This simulator does not accept any commands.\n");
}
void
sim_set_callbacks (sd, ptr)
SIM_DESC sd;
host_callback *ptr;
{
sim_callback = ptr;
}
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