[sim]

	* rx: New directory.
	* configure.ac: Add entry for Renesas RX.
	* configure: Regenerate.

[include/gdb]
	* sim-rx.h: New.

1 files changed, 552 insertions, 0 deletions

diff --git a/sim/rx/mem.c b/sim/rx/mem.c
new file mode 100644
index 0000000..9209e2b
--- /dev/null
+++ b/sim/rx/mem.c
@@ -0,0 +1,552 @@
+/* mem.c --- memory for RX simulator.
+
+Copyright (C) 2005, 2007, 2008, 2009 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 <stdio.h>
+#include <stdlib.h>
+#include <string.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 (12)
+
+#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];
+
+/* [ 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));
+}
+
+enum mem_ptr_action
+{
+  MPA_WRITING,
+  MPA_READING,
+  MPA_CONTENT_TYPE
+};
+
+static unsigned char *
+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 **));
+    }
+  if (pt[pt1][pt2] == 0)
+    {
+      if (action == MPA_READING)
+	execution_error (SIM_ERR_READ_UNWRITTEN_PAGES, address);
+
+      pt[pt1][pt2] = (unsigned char *) malloc (OFF_LEN);
+      memset (pt[pt1][pt2], 0, OFF_LEN);
+      ptr[pt1][pt2] = (unsigned char *) malloc (OFF_LEN);
+      memset (ptr[pt1][pt2], MC_UNINIT, OFF_LEN);
+    }
+  else if (action == MPA_READING
+	   && ptr[pt1][pt2][pto] == MC_UNINIT)
+    execution_error (SIM_ERR_READ_UNWRITTEN_BYTES, address);
+
+  if (action == MPA_WRITING)
+    {
+      if (ptr[pt1][pt2][pto] == MC_PUSHED_PC)
+	execution_error (SIM_ERR_CORRUPT_STACK, address);
+      ptr[pt1][pt2][pto] = MC_DATA;
+    }
+
+  if (action == MPA_CONTENT_TYPE)
+    return ptr[pt1][pt2] + pto;
+
+  return pt[pt1][pt2] + pto;
+}
+
+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 ()
+{
+  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 ()
+{
+  if (!trace)
+    return;
+  tpr--;
+  if (tpr == 0)
+    printf ("\n");
+}
+
+static char
+mtypec (int address)
+{
+  unsigned char *cp = mem_ptr (address, MPA_CONTENT_TYPE);
+  return "udp"[*cp];
+}
+
+#define E() if (trace) e()
+
+void
+mem_put_byte (unsigned int address, unsigned char value)
+{
+  unsigned char *m;
+  char tc = ' ';
+
+  if (trace)
+    tc = mtypec (address);
+  m = mem_ptr (address, MPA_WRITING);
+  if (trace)
+    printf (" %02x%c", value, tc);
+  *m = value;
+  switch (address)
+    {
+    case 0x00e1:
+      {
+	static int old_led = -1;
+	static char *led_on[] =
+	  { "\033[31m O ", "\033[32m O ", "\033[34m O " };
+	static char *led_off[] = { "\033[0m · ", "\033[0m · ", "\033[0m · " };
+	int i;
+	if (old_led != value)
+	  {
+	    fputs ("  ", stdout);
+	    for (i = 0; i < 3; i++)
+	      if (value & (1 << i))
+		fputs (led_off[i], stdout);
+	      else
+		fputs (led_on[i], stdout);
+	    fputs ("\033[0m\r", stdout);
+	    fflush (stdout);
+	    old_led = value;
+	  }
+      }
+      break;
+
+    case 0x3aa: /* uart1tx */
+      {
+	static int pending_exit = 0;
+	if (value == 0)
+	  {
+	    if (pending_exit)
+	      {
+		step_result = RX_MAKE_EXITED(value);
+		return;
+	      }
+	    pending_exit = 1;
+	  }
+	else
+	  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);
+}
+
+void
+mem_put_hi (int address, unsigned short value)
+{
+  S ("<=");
+  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, int nbytes)
+{
+  S ("<=");
+  if (enable_counting)
+    mem_counters[1][1] += nbytes;
+  while (nbytes--)
+    mem_put_byte (address++, *(unsigned char *) bufptr++);
+  E ();
+}
+
+unsigned char
+mem_get_pc (int address)
+{
+  unsigned char *m = mem_ptr (address, MPA_READING);
+  COUNT (0, 0);
+  return *m;
+}
+
+static unsigned char
+mem_get_byte (unsigned int address)
+{
+  unsigned char *m;
+
+  S ("=>");
+  m = mem_ptr (address, MPA_READING);
+  switch (address)
+    {
+    case 0x3ad: /* uart1c1 */
+      E();
+      return 2; /* 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 ("=>");
+  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, int nbytes)
+{
+  S ("=>");
+  if (enable_counting)
+    mem_counters[0][1] += nbytes;
+  while (nbytes--)
+    *(char *) 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 = 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 = 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 = mem_ptr (address, MPA_CONTENT_TYPE);
+  return *mt;
+}