[thirdparty/binutils-gdb.git] / sim / rx / mem.c

/* mem.c --- memory for RX simulator.

Copyright (C) 2005-2021 Free Software Foundation, Inc.
Contributed by Red Hat, Inc.

This file is part of the GNU simulators.

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/>.  */

/* This slows down the simulator and we get some false negatives from
   gcc, like when it uses a long-sized hole to hold a byte-sized
   variable, knowing that it doesn't care about the other bits.  But,
   if you need to track down a read-from-unitialized bug, set this to
   1.  */
#define RDCHECK 0

#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "opcode/rx.h"
#include "mem.h"
#include "cpu.h"
#include "syscalls.h"
#include "misc.h"
#include "err.h"

#define L1_BITS  (10)
#define L2_BITS  (10)
#define OFF_BITS PAGE_BITS

#define L1_LEN  (1 << L1_BITS)
#define L2_LEN  (1 << L2_BITS)
#define OFF_LEN (1 << OFF_BITS)

static unsigned char **pt[L1_LEN];
static unsigned char **ptr[L1_LEN];
static RX_Opcode_Decoded ***ptdc[L1_LEN];

/* [ get=0/put=1 ][ byte size ] */
static unsigned int mem_counters[2][5];

#define COUNT(isput,bytes)                                      \
  if (verbose && enable_counting) mem_counters[isput][bytes]++

void
init_mem (void)
{
  int i, j;

  for (i = 0; i < L1_LEN; i++)
    if (pt[i])
      {
	for (j = 0; j < L2_LEN; j++)
	  if (pt[i][j])
	    free (pt[i][j]);
	free (pt[i]);
      }
  memset (pt, 0, sizeof (pt));
  memset (ptr, 0, sizeof (ptr));
  memset (mem_counters, 0, sizeof (mem_counters));
}

unsigned char *
rx_mem_ptr (unsigned long address, enum mem_ptr_action action)
{
  int pt1 = (address >> (L2_BITS + OFF_BITS)) & ((1 << L1_BITS) - 1);
  int pt2 = (address >> OFF_BITS) & ((1 << L2_BITS) - 1);
  int pto = address & ((1 << OFF_BITS) - 1);

  if (address == 0)
    execution_error (SIM_ERR_NULL_POINTER_DEREFERENCE, 0);

  if (pt[pt1] == 0)
    {
      pt[pt1] = (unsigned char **) calloc (L2_LEN, sizeof (char **));
      ptr[pt1] = (unsigned char **) calloc (L2_LEN, sizeof (char **));
      ptdc[pt1] = (RX_Opcode_Decoded ***) calloc (L2_LEN, sizeof (RX_Opcode_Decoded ***));
    }
  if (pt[pt1][pt2] == 0)
    {
      if (action == MPA_READING)
	execution_error (SIM_ERR_READ_UNWRITTEN_PAGES, address);

      pt[pt1][pt2] = (unsigned char *) calloc (OFF_LEN, 1);
      ptr[pt1][pt2] = (unsigned char *) calloc (OFF_LEN, 1);
      ptdc[pt1][pt2] = (RX_Opcode_Decoded **) calloc (OFF_LEN, sizeof(RX_Opcode_Decoded *));
    }
  else if (action == MPA_READING
	   && ptr[pt1][pt2][pto] == MC_UNINIT)
    execution_error (SIM_ERR_READ_UNWRITTEN_BYTES, address);

  if (action == MPA_WRITING)
    {
      int pto_dc;
      if (ptr[pt1][pt2][pto] == MC_PUSHED_PC)
	execution_error (SIM_ERR_CORRUPT_STACK, address);
      ptr[pt1][pt2][pto] = MC_DATA;

      /* The instruction decoder doesn't store it's decoded instructions
         at word swapped addresses.  Therefore, when clearing the decode
	 cache, we have to account for that here.  */
      pto_dc = pto ^ (rx_big_endian ? 3 : 0);
      if (ptdc[pt1][pt2][pto_dc])
	{
	  free (ptdc[pt1][pt2][pto_dc]);
	  ptdc[pt1][pt2][pto_dc] = NULL;
	}
    }

  if (action == MPA_CONTENT_TYPE)
    return (unsigned char *) (ptr[pt1][pt2] + pto);

  if (action == MPA_DECODE_CACHE)
    return (unsigned char *) (ptdc[pt1][pt2] + pto);

  return pt[pt1][pt2] + pto;
}

RX_Opcode_Decoded **
rx_mem_decode_cache (unsigned long address)
{
  return (RX_Opcode_Decoded **) rx_mem_ptr (address, MPA_DECODE_CACHE);
}

static inline int
is_reserved_address (unsigned int address)
{
  return (address >= 0x00020000 && address < 0x00080000)
    ||   (address >= 0x00100000 && address < 0x01000000)
    ||   (address >= 0x08000000 && address < 0xff000000);
}

static void
used (int rstart, int i, int j)
{
  int rend = i << (L2_BITS + OFF_BITS);
  rend += j << OFF_BITS;
  if (rstart == 0xe0000 && rend == 0xe1000)
    return;
  printf ("mem:   %08x - %08x (%dk bytes)\n", rstart, rend - 1,
	  (rend - rstart) / 1024);
}

static char *
mcs (int isput, int bytes)
{
  return comma (mem_counters[isput][bytes]);
}

void
mem_usage_stats (void)
{
  int i, j;
  int rstart = 0;
  int pending = 0;

  for (i = 0; i < L1_LEN; i++)
    if (pt[i])
      {
	for (j = 0; j < L2_LEN; j++)
	  if (pt[i][j])
	    {
	      if (!pending)
		{
		  pending = 1;
		  rstart = (i << (L2_BITS + OFF_BITS)) + (j << OFF_BITS);
		}
	    }
	  else if (pending)
	    {
	      pending = 0;
	      used (rstart, i, j);
	    }
      }
    else
      {
	if (pending)
	  {
	    pending = 0;
	    used (rstart, i, 0);
	  }
      }
  /*       mem foo: 123456789012 123456789012 123456789012 123456789012
            123456789012 */
  printf ("                 byte        short        3byte         long"
          "       opcode\n");
  if (verbose > 1)
    {
      /* Only use comma separated numbers when being very verbose.
	 Comma separated numbers are hard to parse in awk scripts.  */
      printf ("mem get: %12s %12s %12s %12s %12s\n", mcs (0, 1), mcs (0, 2),
	      mcs (0, 3), mcs (0, 4), mcs (0, 0));
      printf ("mem put: %12s %12s %12s %12s\n", mcs (1, 1), mcs (1, 2),
	      mcs (1, 3), mcs (1, 4));
    }
  else
    {
      printf ("mem get: %12u %12u %12u %12u %12u\n",
	      mem_counters[0][1], mem_counters[0][2],
	      mem_counters[0][3], mem_counters[0][4],
	      mem_counters[0][0]);
      printf ("mem put: %12u %12u %12u %12u\n",
	      mem_counters [1][1], mem_counters [1][2],
	      mem_counters [1][3], mem_counters [1][4]);
    }
}

unsigned long
mem_usage_cycles (void)
{
  unsigned long rv = mem_counters[0][0];
  rv += mem_counters[0][1] * 1;
  rv += mem_counters[0][2] * 2;
  rv += mem_counters[0][3] * 3;
  rv += mem_counters[0][4] * 4;
  rv += mem_counters[1][1] * 1;
  rv += mem_counters[1][2] * 2;
  rv += mem_counters[1][3] * 3;
  rv += mem_counters[1][4] * 4;
  return rv;
}

static int tpr = 0;
static void
s (int address, char *dir)
{
  if (tpr == 0)
    printf ("MEM[%08x] %s", address, dir);
  tpr++;
}

#define S(d) if (trace) s(address, d)
static void
e (void)
{
  if (!trace)
    return;
  tpr--;
  if (tpr == 0)
    printf ("\n");
}

static char
mtypec (int address)
{
  unsigned char *cp = rx_mem_ptr (address, MPA_CONTENT_TYPE);
  return "udp"[*cp];
}

#define E() if (trace) e()

static void
mem_put_byte (unsigned int address, unsigned char value)
{
  unsigned char *m;
  char tc = ' ';

  if (trace)
    tc = mtypec (address);
  m = rx_mem_ptr (address, MPA_WRITING);
  if (trace)
    printf (" %02x%c", value, tc);
  *m = value;
  switch (address)
    {
    case 0x0008c02a: /* PA.DR */
     {
	static int old_led = -1;
	int red_on = 0;
	int i;

	if (old_led != value)
	  {
	    fputs (" ", stdout);
	    for (i = 0; i < 8; i++)
	      if (value & (1 << i))
		{
		  if (! red_on)
		    {
		      fputs ("\033[31m", stdout);
		      red_on = 1;
		    }
		  fputs (" @", stdout);
		}
	      else
		{
		  if (red_on)
		    {
		      fputs ("\033[0m", stdout);
		      red_on = 0;
		    }
		  fputs (" *", stdout);
		}

	    if (red_on)
	      fputs ("\033[0m", stdout);

	    fputs ("\r", stdout);
	    fflush (stdout);
	    old_led = value;
	  }
      }
      break;

#ifdef CYCLE_STATS
    case 0x0008c02b: /* PB.DR */
      {
	if (value == 0)
	  halt_pipeline_stats ();
	else
	  reset_pipeline_stats ();
      }
#endif

    case 0x00088263: /* SCI4.TDR */
      {
	static int pending_exit = 0;
	if (pending_exit == 2)
	  {
	    step_result = RX_MAKE_EXITED(value);
	    longjmp (decode_jmp_buf, 1);
	  }
	else if (value == 3)
	  pending_exit ++;
	else
	  pending_exit = 0;

	putchar(value);
      }
      break;

    default:
      if (is_reserved_address (address))
	generate_access_exception ();
    }
}

void
mem_put_qi (int address, unsigned char value)
{
  S ("<=");
  mem_put_byte (address, value & 0xff);
  E ();
  COUNT (1, 1);
}

#ifdef CYCLE_ACCURATE
static int tpu_base;
#endif

void
mem_put_hi (int address, unsigned short value)
{
  S ("<=");
  switch (address)
    {
#ifdef CYCLE_ACCURATE
    case 0x00088126: /* TPU1.TCNT */
      tpu_base = regs.cycle_count;
      break;
    case 0x00088136: /* TPU2.TCNT */
      tpu_base = regs.cycle_count;
      break;
#endif
    default:
      if (rx_big_endian)
	{
	  mem_put_byte (address, value >> 8);
	  mem_put_byte (address + 1, value & 0xff);
	}
      else
	{
	  mem_put_byte (address, value & 0xff);
	  mem_put_byte (address + 1, value >> 8);
	}
    }
  E ();
  COUNT (1, 2);
}

void
mem_put_psi (int address, unsigned long value)
{
  S ("<=");
  if (rx_big_endian)
    {
      mem_put_byte (address, value >> 16);
      mem_put_byte (address + 1, (value >> 8) & 0xff);
      mem_put_byte (address + 2, value & 0xff);
    }
  else
    {
      mem_put_byte (address, value & 0xff);
      mem_put_byte (address + 1, (value >> 8) & 0xff);
      mem_put_byte (address + 2, value >> 16);
    }
  E ();
  COUNT (1, 3);
}

void
mem_put_si (int address, unsigned long value)
{
  S ("<=");
  if (rx_big_endian)
    {
      mem_put_byte (address + 0, (value >> 24) & 0xff);
      mem_put_byte (address + 1, (value >> 16) & 0xff);
      mem_put_byte (address + 2, (value >> 8) & 0xff);
      mem_put_byte (address + 3, value & 0xff);
    }
  else
    {
      mem_put_byte (address + 0, value & 0xff);
      mem_put_byte (address + 1, (value >> 8) & 0xff);
      mem_put_byte (address + 2, (value >> 16) & 0xff);
      mem_put_byte (address + 3, (value >> 24) & 0xff);
    }
  E ();
  COUNT (1, 4);
}

void
mem_put_blk (int address, void *bufptr_void, int nbytes)
{
  unsigned char *bufptr = (unsigned char *) bufptr_void;

  S ("<=");
  if (enable_counting)
    mem_counters[1][1] += nbytes;
  while (nbytes--)
    mem_put_byte (address++, *bufptr++);
  E ();
}

unsigned char
mem_get_pc (int address)
{
  unsigned char *m = rx_mem_ptr (address, MPA_READING);
  COUNT (0, 0);
  return *m;
}

static unsigned char
mem_get_byte (unsigned int address)
{
  unsigned char *m;

  S ("=>");
  m = rx_mem_ptr (address, MPA_READING);
  switch (address)
    {
    case 0x00088264: /* SCI4.SSR */
      E();
      return 0x04; /* transmitter empty */
      break;
    default: 
      if (trace)
	printf (" %02x%c", *m, mtypec (address));
      if (is_reserved_address (address))
	generate_access_exception ();
      break;
    }
  E ();
  return *m;
}

unsigned char
mem_get_qi (int address)
{
  unsigned char rv;
  S ("=>");
  rv = mem_get_byte (address);
  COUNT (0, 1);
  E ();
  return rv;
}

unsigned short
mem_get_hi (int address)
{
  unsigned short rv;
  S ("=>");
  switch (address)
    {
#ifdef CYCLE_ACCURATE
    case 0x00088126: /* TPU1.TCNT */
      rv = (regs.cycle_count - tpu_base) >> 16;
      break;
    case 0x00088136: /* TPU2.TCNT */
      rv = (regs.cycle_count - tpu_base) >> 0;
      break;
#endif

    default:
      if (rx_big_endian)
	{
	  rv = mem_get_byte (address) << 8;
	  rv |= mem_get_byte (address + 1);
	}
      else
	{
	  rv = mem_get_byte (address);
	  rv |= mem_get_byte (address + 1) << 8;
	}
    }
  COUNT (0, 2);
  E ();
  return rv;
}

unsigned long
mem_get_psi (int address)
{
  unsigned long rv;
  S ("=>");
  if (rx_big_endian)
    {
      rv = mem_get_byte (address + 2);
      rv |= mem_get_byte (address + 1) << 8;
      rv |= mem_get_byte (address) << 16;
    }
  else
    {
      rv = mem_get_byte (address);
      rv |= mem_get_byte (address + 1) << 8;
      rv |= mem_get_byte (address + 2) << 16;
    }
  COUNT (0, 3);
  E ();
  return rv;
}

unsigned long
mem_get_si (int address)
{
  unsigned long rv;
  S ("=>");
  if (rx_big_endian)
    {
      rv = mem_get_byte (address + 3);
      rv |= mem_get_byte (address + 2) << 8;
      rv |= mem_get_byte (address + 1) << 16;
      rv |= mem_get_byte (address) << 24;
    }
  else
    {
      rv = mem_get_byte (address);
      rv |= mem_get_byte (address + 1) << 8;
      rv |= mem_get_byte (address + 2) << 16;
      rv |= mem_get_byte (address + 3) << 24;
    }
  COUNT (0, 4);
  E ();
  return rv;
}

void
mem_get_blk (int address, void *bufptr_void, int nbytes)
{
  char *bufptr = (char *) bufptr_void;

  S ("=>");
  if (enable_counting)
    mem_counters[0][1] += nbytes;
  while (nbytes--)
    *bufptr++ = mem_get_byte (address++);
  E ();
}

int
sign_ext (int v, int bits)
{
  if (bits < 32)
    {
      v &= (1 << bits) - 1;
      if (v & (1 << (bits - 1)))
	v -= (1 << bits);
    }
  return v;
}

void
mem_set_content_type (int address, enum mem_content_type type)
{
  unsigned char *mt = rx_mem_ptr (address, MPA_CONTENT_TYPE);
  *mt = type;
}

void
mem_set_content_range (int start_address, int end_address, enum mem_content_type type)
{
  while (start_address < end_address)
    {
      int sz, ofs;
      unsigned char *mt;

      sz = end_address - start_address;
      ofs = start_address % L1_LEN;
      if (sz + ofs > L1_LEN)
	sz = L1_LEN - ofs;

      mt = rx_mem_ptr (start_address, MPA_CONTENT_TYPE);
      memset (mt, type, sz);

      start_address += sz;
    }
}

enum mem_content_type
mem_get_content_type (int address)
{
  unsigned char *mt = rx_mem_ptr (address, MPA_CONTENT_TYPE);
  return *mt;
}
Commit	Line	Data
4f8d4a38 DD	1	/* mem.c --- memory for RX simulator.
4f8d4a38 DD	2
3666a048	3	Copyright (C) 2005-2021 Free Software Foundation, Inc.
4f8d4a38 DD	4	Contributed by Red Hat, Inc.
	5
	6	This file is part of the GNU simulators.
	7
	8	This program is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 3 of the License, or
	11	(at your option) any later version.
	12
	13	This program is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with this program. If not, see <http://www.gnu.org/licenses/>. */
	20
	21	/* This slows down the simulator and we get some false negatives from
	22	gcc, like when it uses a long-sized hole to hold a byte-sized
	23	variable, knowing that it doesn't care about the other bits. But,
	24	if you need to track down a read-from-unitialized bug, set this to
	25	1. */
	26	#define RDCHECK 0
	27
93378652	28	#include "config.h"
4f8d4a38 DD	29	#include <stdio.h>
	30	#include <stdlib.h>
	31	#include <string.h>
	32
f9c7014e	33	#include "opcode/rx.h"
4f8d4a38 DD	34	#include "mem.h"
	35	#include "cpu.h"
	36	#include "syscalls.h"
	37	#include "misc.h"
	38	#include "err.h"
	39
	40	#define L1_BITS (10)
	41	#define L2_BITS (10)
93378652	42	#define OFF_BITS PAGE_BITS
4f8d4a38 DD	43
	44	#define L1_LEN (1 << L1_BITS)
	45	#define L2_LEN (1 << L2_BITS)
	46	#define OFF_LEN (1 << OFF_BITS)
	47
	48	static unsigned char **pt[L1_LEN];
	49	static unsigned char **ptr[L1_LEN];
f9c7014e	50	static RX_Opcode_Decoded ***ptdc[L1_LEN];
4f8d4a38 DD	51
	52	/* [ get=0/put=1 ][ byte size ] */
	53	static unsigned int mem_counters[2][5];
	54
	55	#define COUNT(isput,bytes) \
	56	if (verbose && enable_counting) mem_counters[isput][bytes]++
	57
	58	void
	59	init_mem (void)
	60	{
	61	int i, j;
	62
	63	for (i = 0; i < L1_LEN; i++)
	64	if (pt[i])
	65	{
	66	for (j = 0; j < L2_LEN; j++)
	67	if (pt[i][j])
	68	free (pt[i][j]);
	69	free (pt[i]);
	70	}
	71	memset (pt, 0, sizeof (pt));
	72	memset (ptr, 0, sizeof (ptr));
	73	memset (mem_counters, 0, sizeof (mem_counters));
	74	}
	75
93378652 DD	76	unsigned char *
93378652 DD	77	rx_mem_ptr (unsigned long address, enum mem_ptr_action action)
4f8d4a38 DD	78	{
	79	int pt1 = (address >> (L2_BITS + OFF_BITS)) & ((1 << L1_BITS) - 1);
	80	int pt2 = (address >> OFF_BITS) & ((1 << L2_BITS) - 1);
	81	int pto = address & ((1 << OFF_BITS) - 1);
	82
	83	if (address == 0)
	84	execution_error (SIM_ERR_NULL_POINTER_DEREFERENCE, 0);
	85
	86	if (pt[pt1] == 0)
	87	{
	88	pt[pt1] = (unsigned char ) calloc (L2_LEN, sizeof (char ));
	89	ptr[pt1] = (unsigned char ) calloc (L2_LEN, sizeof (char ));
f9c7014e	90	ptdc[pt1] = (RX_Opcode_Decoded *) calloc (L2_LEN, sizeof (RX_Opcode_Decoded *));
4f8d4a38 DD	91	}
	92	if (pt[pt1][pt2] == 0)
	93	{
	94	if (action == MPA_READING)
	95	execution_error (SIM_ERR_READ_UNWRITTEN_PAGES, address);
	96
f9c7014e DD	97	pt[pt1][pt2] = (unsigned char *) calloc (OFF_LEN, 1);
	98	ptr[pt1][pt2] = (unsigned char *) calloc (OFF_LEN, 1);
	99	ptdc[pt1][pt2] = (RX_Opcode_Decoded *) calloc (OFF_LEN, sizeof(RX_Opcode_Decoded ));
4f8d4a38 DD	100	}
	101	else if (action == MPA_READING
	102	&& ptr[pt1][pt2][pto] == MC_UNINIT)
	103	execution_error (SIM_ERR_READ_UNWRITTEN_BYTES, address);
	104
	105	if (action == MPA_WRITING)
	106	{
e4dcb664	107	int pto_dc;
4f8d4a38 DD	108	if (ptr[pt1][pt2][pto] == MC_PUSHED_PC)
	109	execution_error (SIM_ERR_CORRUPT_STACK, address);
	110	ptr[pt1][pt2][pto] = MC_DATA;
e4dcb664 KB	111
	112	/* The instruction decoder doesn't store it's decoded instructions
	113	at word swapped addresses. Therefore, when clearing the decode
	114	cache, we have to account for that here. */
	115	pto_dc = pto ^ (rx_big_endian ? 3 : 0);
	116	if (ptdc[pt1][pt2][pto_dc])
f9c7014e	117	{
e4dcb664 KB	118	free (ptdc[pt1][pt2][pto_dc]);
e4dcb664 KB	119	ptdc[pt1][pt2][pto_dc] = NULL;
f9c7014e	120	}
4f8d4a38 DD	121	}
	122
	123	if (action == MPA_CONTENT_TYPE)
f9c7014e DD	124	return (unsigned char *) (ptr[pt1][pt2] + pto);
	125
	126	if (action == MPA_DECODE_CACHE)
	127	return (unsigned char *) (ptdc[pt1][pt2] + pto);
4f8d4a38 DD	128
	129	return pt[pt1][pt2] + pto;
	130	}
	131
f9c7014e DD	132	RX_Opcode_Decoded **
	133	rx_mem_decode_cache (unsigned long address)
	134	{
	135	return (RX_Opcode_Decoded **) rx_mem_ptr (address, MPA_DECODE_CACHE);
	136	}
	137
4f8d4a38 DD	138	static inline int
	139	is_reserved_address (unsigned int address)
	140	{
	141	return (address >= 0x00020000 && address < 0x00080000)
	142	\|\| (address >= 0x00100000 && address < 0x01000000)
	143	\|\| (address >= 0x08000000 && address < 0xff000000);
	144	}
	145
	146	static void
	147	used (int rstart, int i, int j)
	148	{
	149	int rend = i << (L2_BITS + OFF_BITS);
	150	rend += j << OFF_BITS;
	151	if (rstart == 0xe0000 && rend == 0xe1000)
	152	return;
	153	printf ("mem: %08x - %08x (%dk bytes)\n", rstart, rend - 1,
	154	(rend - rstart) / 1024);
	155	}
	156
	157	static char *
	158	mcs (int isput, int bytes)
	159	{
	160	return comma (mem_counters[isput][bytes]);
	161	}
	162
	163	void
1c3e93a4	164	mem_usage_stats (void)
4f8d4a38 DD	165	{
	166	int i, j;
	167	int rstart = 0;
	168	int pending = 0;
	169
	170	for (i = 0; i < L1_LEN; i++)
	171	if (pt[i])
	172	{
	173	for (j = 0; j < L2_LEN; j++)
	174	if (pt[i][j])
	175	{
	176	if (!pending)
	177	{
	178	pending = 1;
	179	rstart = (i << (L2_BITS + OFF_BITS)) + (j << OFF_BITS);
	180	}
	181	}
	182	else if (pending)
	183	{
	184	pending = 0;
	185	used (rstart, i, j);
	186	}
	187	}
	188	else
	189	{
	190	if (pending)
	191	{
	192	pending = 0;
	193	used (rstart, i, 0);
	194	}
	195	}
	196	/* mem foo: 123456789012 123456789012 123456789012 123456789012
	197	123456789012 */
	198	printf (" byte short 3byte long"
	199	" opcode\n");
	200	if (verbose > 1)
	201	{
	202	/* Only use comma separated numbers when being very verbose.
	203	Comma separated numbers are hard to parse in awk scripts. */
	204	printf ("mem get: %12s %12s %12s %12s %12s\n", mcs (0, 1), mcs (0, 2),
	205	mcs (0, 3), mcs (0, 4), mcs (0, 0));
	206	printf ("mem put: %12s %12s %12s %12s\n", mcs (1, 1), mcs (1, 2),
	207	mcs (1, 3), mcs (1, 4));
	208	}
	209	else
	210	{
	211	printf ("mem get: %12u %12u %12u %12u %12u\n",
	212	mem_counters[0][1], mem_counters[0][2],
	213	mem_counters[0][3], mem_counters[0][4],
	214	mem_counters[0][0]);
	215	printf ("mem put: %12u %12u %12u %12u\n",
	216	mem_counters [1][1], mem_counters [1][2],
	217	mem_counters [1][3], mem_counters [1][4]);
	218	}
	219	}
	220
	221	unsigned long
	222	mem_usage_cycles (void)
	223	{
	224	unsigned long rv = mem_counters[0][0];
	225	rv += mem_counters[0][1] * 1;
	226	rv += mem_counters[0][2] * 2;
	227	rv += mem_counters[0][3] * 3;
	228	rv += mem_counters[0][4] * 4;
229	rv += mem_counters[1][1] * 1;
230	rv += mem_counters[1][2] * 2;
231	rv += mem_counters[1][3] * 3;
232	rv += mem_counters[1][4] * 4;
233	return rv;
234	}
235
236	static int tpr = 0;
237	static void
238	s (int address, char *dir)
239	{
240	if (tpr == 0)
241	printf ("MEM[%08x] %s", address, dir);
242	tpr++;
243	}
244
245	#define S(d) if (trace) s(address, d)
246	static void
1c3e93a4	247	e (void)
4f8d4a38 DD	248	{
	249	if (!trace)
	250	return;
	251	tpr--;
	252	if (tpr == 0)
	253	printf ("\n");
	254	}
	255
	256	static char
	257	mtypec (int address)
	258	{
93378652	259	unsigned char *cp = rx_mem_ptr (address, MPA_CONTENT_TYPE);
4f8d4a38 DD	260	return "udp"[*cp];
	261	}
	262
	263	#define E() if (trace) e()
	264
73d4725f	265	static void
4f8d4a38 DD	266	mem_put_byte (unsigned int address, unsigned char value)
	267	{
	268	unsigned char *m;
	269	char tc = ' ';
	270
	271	if (trace)
	272	tc = mtypec (address);
93378652	273	m = rx_mem_ptr (address, MPA_WRITING);
4f8d4a38 DD	274	if (trace)
	275	printf (" %02x%c", value, tc);
	276	*m = value;
	277	switch (address)
	278	{
93378652 DD	279	case 0x0008c02a: /* PA.DR */
93378652 DD	280	{
4f8d4a38	281	static int old_led = -1;
93378652	282	int red_on = 0;
4f8d4a38	283	int i;
93378652	284
4f8d4a38 DD	285	if (old_led != value)
4f8d4a38 DD	286	{
93378652 DD	287	fputs (" ", stdout);
93378652 DD	288	for (i = 0; i < 8; i++)
4f8d4a38	289	if (value & (1 << i))
93378652 DD	290	{
	291	if (! red_on)
	292	{
	293	fputs ("\033[31m", stdout);
	294	red_on = 1;
	295	}
	296	fputs (" @", stdout);
	297	}
4f8d4a38	298	else
93378652 DD	299	{
	300	if (red_on)
	301	{
	302	fputs ("\033[0m", stdout);
	303	red_on = 0;
	304	}
	305	fputs (" *", stdout);
	306	}
	307
	308	if (red_on)
	309	fputs ("\033[0m", stdout);
	310
	311	fputs ("\r", stdout);
4f8d4a38 DD	312	fflush (stdout);
	313	old_led = value;
	314	}
	315	}
	316	break;
	317
93378652 DD	318	#ifdef CYCLE_STATS
93378652 DD	319	case 0x0008c02b: /* PB.DR */
4f8d4a38	320	{
4f8d4a38	321	if (value == 0)
93378652 DD	322	halt_pipeline_stats ();
	323	else
	324	reset_pipeline_stats ();
	325	}
	326	#endif
	327
	328	case 0x00088263: /* SCI4.TDR */
	329	{
	330	static int pending_exit = 0;
	331	if (pending_exit == 2)
4f8d4a38	332	{
93378652 DD	333	step_result = RX_MAKE_EXITED(value);
93378652 DD	334	longjmp (decode_jmp_buf, 1);
4f8d4a38	335	}
93378652 DD	336	else if (value == 3)
93378652 DD	337	pending_exit ++;
4f8d4a38	338	else
93378652 DD	339	pending_exit = 0;
	340
	341	putchar(value);
4f8d4a38 DD	342	}
	343	break;
	344
	345	default:
	346	if (is_reserved_address (address))
	347	generate_access_exception ();
	348	}
	349	}
	350
	351	void
	352	mem_put_qi (int address, unsigned char value)
	353	{
	354	S ("<=");
	355	mem_put_byte (address, value & 0xff);
	356	E ();
	357	COUNT (1, 1);
	358	}
	359
f9c7014e	360	#ifdef CYCLE_ACCURATE
93378652	361	static int tpu_base;
f9c7014e	362	#endif
93378652	363
4f8d4a38 DD	364	void
	365	mem_put_hi (int address, unsigned short value)
	366	{
	367	S ("<=");
93378652	368	switch (address)
4f8d4a38	369	{
93378652 DD	370	#ifdef CYCLE_ACCURATE
	371	case 0x00088126: /* TPU1.TCNT */
	372	tpu_base = regs.cycle_count;
	373	break;
	374	case 0x00088136: /* TPU2.TCNT */
	375	tpu_base = regs.cycle_count;
	376	break;
	377	#endif
	378	default:
	379	if (rx_big_endian)
	380	{
	381	mem_put_byte (address, value >> 8);
	382	mem_put_byte (address + 1, value & 0xff);
	383	}
	384	else
	385	{
	386	mem_put_byte (address, value & 0xff);
	387	mem_put_byte (address + 1, value >> 8);
	388	}
4f8d4a38 DD	389	}
	390	E ();
	391	COUNT (1, 2);
	392	}
	393
	394	void
	395	mem_put_psi (int address, unsigned long value)
	396	{
	397	S ("<=");
	398	if (rx_big_endian)
	399	{
	400	mem_put_byte (address, value >> 16);
	401	mem_put_byte (address + 1, (value >> 8) & 0xff);
	402	mem_put_byte (address + 2, value & 0xff);
	403	}
	404	else
	405	{
	406	mem_put_byte (address, value & 0xff);
	407	mem_put_byte (address + 1, (value >> 8) & 0xff);
	408	mem_put_byte (address + 2, value >> 16);
	409	}
	410	E ();
	411	COUNT (1, 3);
	412	}
	413
	414	void
	415	mem_put_si (int address, unsigned long value)
	416	{
	417	S ("<=");
	418	if (rx_big_endian)
	419	{
	420	mem_put_byte (address + 0, (value >> 24) & 0xff);
	421	mem_put_byte (address + 1, (value >> 16) & 0xff);
	422	mem_put_byte (address + 2, (value >> 8) & 0xff);
	423	mem_put_byte (address + 3, value & 0xff);
	424	}
	425	else
	426	{
	427	mem_put_byte (address + 0, value & 0xff);
	428	mem_put_byte (address + 1, (value >> 8) & 0xff);
	429	mem_put_byte (address + 2, (value >> 16) & 0xff);
	430	mem_put_byte (address + 3, (value >> 24) & 0xff);
	431	}
	432	E ();
	433	COUNT (1, 4);
	434	}
	435
	436	void
da9ecd60	437	mem_put_blk (int address, void *bufptr_void, int nbytes)
4f8d4a38	438	{
da9ecd60 AB	439	unsigned char bufptr = (unsigned char ) bufptr_void;
da9ecd60 AB	440
4f8d4a38 DD	441	S ("<=");
	442	if (enable_counting)
	443	mem_counters[1][1] += nbytes;
	444	while (nbytes--)
da9ecd60	445	mem_put_byte (address++, *bufptr++);
4f8d4a38 DD	446	E ();
	447	}
	448
	449	unsigned char
	450	mem_get_pc (int address)
	451	{
93378652	452	unsigned char *m = rx_mem_ptr (address, MPA_READING);
4f8d4a38 DD	453	COUNT (0, 0);
	454	return *m;
	455	}
	456
	457	static unsigned char
	458	mem_get_byte (unsigned int address)
	459	{
	460	unsigned char *m;
	461
	462	S ("=>");
93378652	463	m = rx_mem_ptr (address, MPA_READING);
4f8d4a38 DD	464	switch (address)
4f8d4a38 DD	465	{
93378652	466	case 0x00088264: /* SCI4.SSR */
4f8d4a38	467	E();
93378652	468	return 0x04; /* transmitter empty */
4f8d4a38 DD	469	break;
	470	default:
	471	if (trace)
	472	printf (" %02x%c", *m, mtypec (address));
	473	if (is_reserved_address (address))
	474	generate_access_exception ();
	475	break;
	476	}
	477	E ();
	478	return *m;
	479	}
	480
	481	unsigned char
	482	mem_get_qi (int address)
	483	{
	484	unsigned char rv;
	485	S ("=>");
	486	rv = mem_get_byte (address);
	487	COUNT (0, 1);
	488	E ();
	489	return rv;
	490	}
	491
	492	unsigned short
	493	mem_get_hi (int address)
	494	{
	495	unsigned short rv;
	496	S ("=>");
93378652	497	switch (address)
4f8d4a38	498	{
93378652 DD	499	#ifdef CYCLE_ACCURATE
	500	case 0x00088126: /* TPU1.TCNT */
	501	rv = (regs.cycle_count - tpu_base) >> 16;
	502	break;
	503	case 0x00088136: /* TPU2.TCNT */
	504	rv = (regs.cycle_count - tpu_base) >> 0;
	505	break;
	506	#endif
	507
	508	default:
	509	if (rx_big_endian)
	510	{
	511	rv = mem_get_byte (address) << 8;
	512	rv \|= mem_get_byte (address + 1);
	513	}
	514	else
	515	{
	516	rv = mem_get_byte (address);
	517	rv \|= mem_get_byte (address + 1) << 8;
	518	}
4f8d4a38 DD	519	}
	520	COUNT (0, 2);
	521	E ();
	522	return rv;
	523	}
	524
	525	unsigned long
	526	mem_get_psi (int address)
	527	{
	528	unsigned long rv;
	529	S ("=>");
	530	if (rx_big_endian)
	531	{
	532	rv = mem_get_byte (address + 2);
	533	rv \|= mem_get_byte (address + 1) << 8;
	534	rv \|= mem_get_byte (address) << 16;
	535	}
	536	else
	537	{
	538	rv = mem_get_byte (address);
	539	rv \|= mem_get_byte (address + 1) << 8;
	540	rv \|= mem_get_byte (address + 2) << 16;
	541	}
	542	COUNT (0, 3);
	543	E ();
	544	return rv;
	545	}
	546
	547	unsigned long
	548	mem_get_si (int address)
	549	{
	550	unsigned long rv;
	551	S ("=>");
	552	if (rx_big_endian)
	553	{
	554	rv = mem_get_byte (address + 3);
	555	rv \|= mem_get_byte (address + 2) << 8;
	556	rv \|= mem_get_byte (address + 1) << 16;
	557	rv \|= mem_get_byte (address) << 24;
	558	}
	559	else
	560	{
	561	rv = mem_get_byte (address);
	562	rv \|= mem_get_byte (address + 1) << 8;
	563	rv \|= mem_get_byte (address + 2) << 16;
	564	rv \|= mem_get_byte (address + 3) << 24;
	565	}
	566	COUNT (0, 4);
	567	E ();
	568	return rv;
	569	}
	570
	571	void
da9ecd60	572	mem_get_blk (int address, void *bufptr_void, int nbytes)
4f8d4a38	573	{
da9ecd60 AB	574	char bufptr = (char ) bufptr_void;
da9ecd60 AB	575
4f8d4a38 DD	576	S ("=>");
	577	if (enable_counting)
	578	mem_counters[0][1] += nbytes;
	579	while (nbytes--)
da9ecd60	580	*bufptr++ = mem_get_byte (address++);
4f8d4a38 DD	581	E ();
	582	}
	583
	584	int
	585	sign_ext (int v, int bits)
	586	{
	587	if (bits < 32)
	588	{
	589	v &= (1 << bits) - 1;
	590	if (v & (1 << (bits - 1)))
	591	v -= (1 << bits);
	592	}
	593	return v;
	594	}
	595
	596	void
	597	mem_set_content_type (int address, enum mem_content_type type)
	598	{
93378652	599	unsigned char *mt = rx_mem_ptr (address, MPA_CONTENT_TYPE);
4f8d4a38 DD	600	*mt = type;
	601	}
	602
	603	void
	604	mem_set_content_range (int start_address, int end_address, enum mem_content_type type)
	605	{
	606	while (start_address < end_address)
	607	{
	608	int sz, ofs;
	609	unsigned char *mt;
	610
	611	sz = end_address - start_address;
	612	ofs = start_address % L1_LEN;
	613	if (sz + ofs > L1_LEN)
	614	sz = L1_LEN - ofs;
	615
93378652	616	mt = rx_mem_ptr (start_address, MPA_CONTENT_TYPE);
4f8d4a38 DD	617	memset (mt, type, sz);
	618
	619	start_address += sz;
	620	}
	621	}
	622
	623	enum mem_content_type
	624	mem_get_content_type (int address)
	625	{
93378652	626	unsigned char *mt = rx_mem_ptr (address, MPA_CONTENT_TYPE);
4f8d4a38 DD	627	return *mt;
4f8d4a38 DD	628	}