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binutils-gdb/sim/d30v/sim-calls.c

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/* This file is part of the program psim.
Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>
Copyright (C) 1997, Free Software Foundation
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 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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdarg.h>
#include <ctype.h>
#include "sim-main.h"
#include "sim-options.h"
#include "bfd.h"
#include "sim-utils.h"
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
static unsigned long extmem_size = 1024*1024*8; /* 8 meg is the maximum listed in the arch. manual */
static const char * get_insn_name (sim_cpu *, int);
#define SIM_ADDR unsigned
#define OPTION_TRACE_CALL 200
#define OPTION_TRACE_TRAPDUMP 201
#define OPTION_EXTMEM_SIZE 202
static SIM_RC
d30v_option_handler (SIM_DESC sd,
sim_cpu *cpu,
int opt,
char *arg,
int command_p)
{
char *suffix;
switch (opt)
{
default:
break;
case OPTION_TRACE_CALL:
if (arg == NULL || strcmp (arg, "yes") == 0 || strcmp (arg, "on") == 0)
TRACE_CALL_P = 1;
else if (strcmp (arg, "no") == 0 || strcmp (arg, "off") == 0)
TRACE_CALL_P = 0;
else
{
sim_io_eprintf (sd, "Unreconized --trace-call option `%s'\n", arg);
return SIM_RC_FAIL;
}
return SIM_RC_OK;
case OPTION_TRACE_TRAPDUMP:
if (arg == NULL || strcmp (arg, "yes") == 0 || strcmp (arg, "on") == 0)
TRACE_TRAP_P = 1;
else if (strcmp (arg, "no") == 0 || strcmp (arg, "off") == 0)
TRACE_TRAP_P = 0;
else
{
sim_io_eprintf (sd, "Unreconized --trace-call option `%s'\n", arg);
return SIM_RC_FAIL;
}
return SIM_RC_OK;
case OPTION_EXTMEM_SIZE:
if (arg == NULL || !isdigit (*arg))
{
sim_io_eprintf (sd, "Invalid memory size `%s'", arg);
return SIM_RC_FAIL;
}
suffix = arg;
extmem_size = strtol (arg, &suffix, 0);
if (*suffix == 'm' || *suffix == 'M')
extmem_size <<= 20;
else if (*suffix == 'k' || *suffix == 'K')
extmem_size <<= 10;
sim_do_commandf (sd, "memory delete 0x80000000");
sim_do_commandf (sd, "memory region 0x80000000,0x%lx", extmem_size);
return SIM_RC_OK;
}
sim_io_eprintf (sd, "Unknown option (%d)\n", opt);
return SIM_RC_FAIL;
}
static const OPTION d30v_options[] =
{
{ {"trace-call", optional_argument, NULL, OPTION_TRACE_CALL},
'\0', "on|off", "Enable tracing of calls and returns, checking saved registers",
d30v_option_handler },
{ {"trace-trapdump", optional_argument, NULL, OPTION_TRACE_TRAPDUMP},
'\0', "on|off",
#if TRAPDUMP
"Traps 0..30 dump out all of the registers (defaults on)",
#else
"Traps 0..30 dump out all of the registers",
#endif
d30v_option_handler },
{ {"extmem-size", required_argument, NULL, OPTION_EXTMEM_SIZE},
'\0', "size", "Change size of external memory, default 8 meg",
d30v_option_handler },
{ {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
};
/* Return name of an insn, used by insn profiling. */
static const char *
get_insn_name (sim_cpu *cpu, int i)
{
return itable[i].name;
}
/* Structures used by the simulator, for gdb just have static structures */
SIM_DESC
sim_open (SIM_OPEN_KIND kind,
host_callback *callback,
struct _bfd *abfd,
char **argv)
{
SIM_DESC sd = sim_state_alloc (kind, callback);
/* FIXME: watchpoints code shouldn't need this */
STATE_WATCHPOINTS (sd)->pc = &(PC);
STATE_WATCHPOINTS (sd)->sizeof_pc = sizeof (PC);
STATE_WATCHPOINTS (sd)->interrupt_handler = d30v_interrupt_event;
/* Initialize the mechanism for doing insn profiling. */
CPU_INSN_NAME (STATE_CPU (sd, 0)) = get_insn_name;
CPU_MAX_INSNS (STATE_CPU (sd, 0)) = nr_itable_entries;
#ifdef TRAPDUMP
TRACE_TRAP_P = TRAPDUMP;
#endif
if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
return 0;
sim_add_option_table (sd, NULL, d30v_options);
/* Memory and EEPROM */
/* internal instruction RAM - fixed */
sim_do_commandf (sd, "memory region 0,0x10000");
/* internal data RAM - fixed */
sim_do_commandf (sd, "memory region 0x20000000,0x8000");
/* control register dummy area */
sim_do_commandf (sd, "memory region 0x40000000,0x10000");
/* external RAM */
sim_do_commandf (sd, "memory region 0x80000000,0x%lx", extmem_size);
/* EIT RAM */
sim_do_commandf (sd, "memory region 0xfffff000,0x1000");
/* getopt will print the error message so we just have to exit if this fails.
FIXME: Hmmm... in the case of gdb we need getopt to call
print_filtered. */
if (sim_parse_args (sd, argv) != SIM_RC_OK)
{
/* Uninstall the modules to avoid memory leaks,
file descriptor leaks, etc. */
sim_module_uninstall (sd);
return 0;
}
/* check for/establish the a reference program image */
if (sim_analyze_program (sd,
(STATE_PROG_ARGV (sd) != NULL
? *STATE_PROG_ARGV (sd)
: NULL),
abfd) != SIM_RC_OK)
{
sim_module_uninstall (sd);
return 0;
}
/* establish any remaining configuration options */
if (sim_config (sd) != SIM_RC_OK)
{
sim_module_uninstall (sd);
return 0;
}
if (sim_post_argv_init (sd) != SIM_RC_OK)
{
/* Uninstall the modules to avoid memory leaks,
file descriptor leaks, etc. */
sim_module_uninstall (sd);
return 0;
}
return sd;
}
void
sim_close (SIM_DESC sd, int quitting)
{
/* Uninstall the modules to avoid memory leaks,
file descriptor leaks, etc. */
sim_module_uninstall (sd);
}
SIM_RC
sim_create_inferior (SIM_DESC sd,
struct _bfd *abfd,
char **argv,
char **envp)
{
/* clear all registers */
memset (&STATE_CPU (sd, 0)->regs, 0, sizeof (STATE_CPU (sd, 0)->regs));
EIT_VB = EIT_VB_DEFAULT;
STATE_CPU (sd, 0)->unit = any_unit;
sim_module_init (sd);
if (abfd != NULL)
PC = bfd_get_start_address (abfd);
else
PC = 0xfffff000; /* reset value */
return SIM_RC_OK;
}
void
sim_do_command (SIM_DESC sd, char *cmd)
{
if (sim_args_command (sd, cmd) != SIM_RC_OK)
sim_io_printf (sd, "Unknown command `%s'\n", cmd);
}
/* The following register definitions were ripped off from
gdb/config/tm-d30v.h. If any of those defs changes, this table needs to
be updated. */
#define NUM_REGS 86
#define R0_REGNUM 0
#define FP_REGNUM 11
#define LR_REGNUM 62
#define SP_REGNUM 63
#define SPI_REGNUM 64 /* Interrupt stack pointer */
#define SPU_REGNUM 65 /* User stack pointer */
#define CREGS_START 66
#define PSW_REGNUM (CREGS_START + 0) /* psw, bpsw, or dpsw??? */
#define PSW_SM 0x80000000 /* Stack mode: 0 == interrupt (SPI),
1 == user (SPU) */
#define BPSW_REGNUM (CREGS_START + 1) /* Backup PSW (on interrupt) */
#define PC_REGNUM (CREGS_START + 2) /* pc, bpc, or dpc??? */
#define BPC_REGNUM (CREGS_START + 3) /* Backup PC (on interrupt) */
#define DPSW_REGNUM (CREGS_START + 4) /* Backup PSW (on debug trap) */
#define DPC_REGNUM (CREGS_START + 5) /* Backup PC (on debug trap) */
#define RPT_C_REGNUM (CREGS_START + 7) /* Loop count */
#define RPT_S_REGNUM (CREGS_START + 8) /* Loop start address*/
#define RPT_E_REGNUM (CREGS_START + 9) /* Loop end address */
#define MOD_S_REGNUM (CREGS_START + 10)
#define MOD_E_REGNUM (CREGS_START + 11)
#define IBA_REGNUM (CREGS_START + 14) /* Instruction break address */
#define EIT_VB_REGNUM (CREGS_START + 15) /* Vector base address */
#define INT_S_REGNUM (CREGS_START + 16) /* Interrupt status */
#define INT_M_REGNUM (CREGS_START + 17) /* Interrupt mask */
#define A0_REGNUM 84
#define A1_REGNUM 85
int
sim_fetch_register (sd, regno, buf, length)
SIM_DESC sd;
int regno;
unsigned char *buf;
int length;
{
if (regno < A0_REGNUM)
{
unsigned32 reg;
if (regno <= R0_REGNUM + 63)
reg = sd->cpu[0].regs.general_purpose[regno];
else if (regno <= SPU_REGNUM)
reg = sd->cpu[0].regs.sp[regno - SPI_REGNUM];
else
reg = sd->cpu[0].regs.control[regno - CREGS_START];
buf[0] = reg >> 24;
buf[1] = reg >> 16;
buf[2] = reg >> 8;
buf[3] = reg;
}
else if (regno < NUM_REGS)
{
unsigned32 reg;
reg = sd->cpu[0].regs.accumulator[regno - A0_REGNUM] >> 32;
buf[0] = reg >> 24;
buf[1] = reg >> 16;
buf[2] = reg >> 8;
buf[3] = reg;
reg = sd->cpu[0].regs.accumulator[regno - A0_REGNUM];
buf[4] = reg >> 24;
buf[5] = reg >> 16;
buf[6] = reg >> 8;
buf[7] = reg;
}
else
abort ();
return -1;
}
int
sim_store_register (sd, regno, buf, length)
SIM_DESC sd;
int regno;
unsigned char *buf;
int length;
{
if (regno < A0_REGNUM)
{
unsigned32 reg;
reg = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
if (regno <= R0_REGNUM + 63)
sd->cpu[0].regs.general_purpose[regno] = reg;
else if (regno <= SPU_REGNUM)
sd->cpu[0].regs.sp[regno - SPI_REGNUM] = reg;
else
sd->cpu[0].regs.control[regno - CREGS_START] = reg;
}
else if (regno < NUM_REGS)
{
unsigned32 reg;
reg = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
sd->cpu[0].regs.accumulator[regno - A0_REGNUM] = (unsigned64)reg << 32;
reg = (buf[4] << 24) | (buf[5] << 16) | (buf[6] << 8) | buf[7];
sd->cpu[0].regs.accumulator[regno - A0_REGNUM] |= reg;
}
else
abort ();
return -1;
}
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