import gdb-19990422 snapshot

15 files changed, 240 insertions, 90 deletions

diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog
index bde0710..ed3c601 100644
--- a/sim/common/ChangeLog
+++ b/sim/common/ChangeLog
@@ -1,3 +1,56 @@
+Fri Apr 16 16:43:22 1999  Doug Evans  <devans@charmed.cygnus.com>
+
+	* sim-core.c (device_error,device_io_read_buffer,
+	device_io_write_buffer): Delete decls.
+	* sim-core.h: Put them here.
+
+	* sim-core.c (sim_core_read_buffer): Pass sd to device_io_read_buffer.
+	(sim_core_write_buffer): Pass sd to device_io_write_buffer.
+	* sim-n-core.h (sim_core_read_aligned_N): Ditto.
+	(sim_core_write_aligned_N): Ditto.
+
+1999-04-14  Stephane Carrez  <stcarrez@worldnet.fr>
+
+	* sim-memopt.c (sim_memory_uninstall): Don't look into
+	free()d memory.
+
+1999-04-14  Doug Evans  <devans@casey.cygnus.com>
+
+	* cgen-utils.scm (virtual_insn_entries): Update attribute definition.
+
+1999-04-13  Doug Evans  <devans@casey.cygnus.com>
+
+	* sim-core.c (sim_core_read_buffer): Handle NULL cpu when WITH_DEVICES.
+	(sim_core_write_buffer): Ditto.
+
+1999-04-02  Keith Seitz  <keiths@cygnus.com>
+
+	* sim-io.c (sim_io_poll_quit): Only call the poll_quit callback
+	after the interval counter has expired.
+	(POLL_QUIT_INTERVAL): Define. Used to tweak the frequency of
+	poll_quit callbacks. May be overridden by Makefile.
+	(poll_quit_counter): New global.
+	* sim-events.c: Remove all mentions of ui_loop_hook. The
+	host callback "poll_quit" will serve the purpose.
+	* run.c: Add definition of ui_loop_hook when NEED_UI_LOOP_HOOK
+	is defined.
+	* nrun.c: Remove declaration of ui_loop_hook.
+
+Wed Mar 31 18:55:41 1999  Doug Evans  <devans@canuck.cygnus.com>
+
+	* cgen-run.c (sim_resume): Don't tell main loop to run "forever"
+	if being used by gdb.
+
+1999-03-22  Doug Evans  <devans@casey.cygnus.com>
+
+	* cgen-types.h (XF,TF): Tweak.
+	* cgen-ops.h: Redo inline support.  Delete DI_FN_SUPPORT,
+	in cgen-types.h.
+	(SUBWORD*,JOIN*): Define.
+	* cgen-trace.c (sim_cgen_disassemble_insn): Update, base_insn_bitsize
+	moved into cpu descriptor.
+	* sim-model.h (MACH): New member `num'.
+
 1999-02-09  Doug Evans  <devans@casey.cygnus.com>
 
 	* Make-common.in (CGEN_READ_SCM): Renamed from CGEN_MAIN_SCM.
diff --git a/sim/common/cgen-ops.h b/sim/common/cgen-ops.h
index 1ec0e6c..6b89859 100644
--- a/sim/common/cgen-ops.h
+++ b/sim/common/cgen-ops.h
@@ -1,5 +1,5 @@
 /* Semantics ops support for CGEN-based simulators.
-   Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
    Contributed by Cygnus Solutions.
 
 This file is part of the GNU Simulators.
@@ -23,6 +23,13 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #ifndef CGEN_SEM_OPS_H
 #define CGEN_SEM_OPS_H
 
+#if defined (__GNUC__) && ! defined (SEMOPS_DEFINE_INLINE)
+#define SEMOPS_DEFINE_INLINE
+#define SEMOPS_INLINE extern inline
+#else
+#define SEMOPS_INLINE
+#endif
+
 /* Semantic operations.
    At one point this file was machine generated.  Maybe it will be again.  */
 
@@ -357,6 +364,7 @@ extern DI EXTSIDI PARAMS ((SI));
 #else
 #define EXTSIDI(x) ((DI) (SI) (x))
 #endif
+
 #if defined (SF_FN_SUPPORT) || defined (DF_FN_SUPPORT)
 extern DF EXTSFDF PARAMS ((SF));
 #else
@@ -387,6 +395,7 @@ extern TF EXTXFTF PARAMS ((XF));
 #else
 #define EXTXFTF(x) ((TF) (XF) (x))
 #endif
+
 #define ZEXTBIQI(x) ((QI) (BI) (x))
 #define ZEXTBIHI(x) ((HI) (BI) (x))
 #define ZEXTBISI(x) ((SI) (BI) (x))
@@ -413,6 +422,7 @@ extern DI ZEXTSIDI PARAMS ((SI));
 #else
 #define ZEXTSIDI(x) ((DI) (USI) (x))
 #endif
+
 #define TRUNCQIBI(x) ((BI) (QI) (x))
 #define TRUNCHIBI(x) ((BI) (HI) (x))
 #define TRUNCHIQI(x) ((QI) (HI) (x))
@@ -439,6 +449,7 @@ extern SI TRUNCDISI PARAMS ((DI));
 #else
 #define TRUNCDISI(x) ((SI) (DI) (x))
 #endif
+
 #if defined (DF_FN_SUPPORT) || defined (SF_FN_SUPPORT)
 extern SF TRUNCDFSF PARAMS ((DF));
 #else
@@ -469,6 +480,7 @@ extern XF TRUNCTFXF PARAMS ((TF));
 #else
 #define TRUNCTFXF(x) ((XF) (TF) (x))
 #endif
+
 #if defined (SF_FN_SUPPORT)
 extern SF FLOATQISF PARAMS ((QI));
 #else
@@ -549,6 +561,7 @@ extern TF FLOATDITF PARAMS ((DI));
 #else
 #define FLOATDITF(x) ((TF) (DI) (x))
 #endif
+
 #if defined (SF_FN_SUPPORT)
 extern SF UFLOATQISF PARAMS ((QI));
 #else
@@ -629,6 +642,7 @@ extern TF UFLOATDITF PARAMS ((DI));
 #else
 #define UFLOATDITF(x) ((TF) (UDI) (x))
 #endif
+
 #if defined (SF_FN_SUPPORT)
 extern BI FIXSFBI PARAMS ((SF));
 #else
@@ -729,6 +743,7 @@ extern DI FIXTFDI PARAMS ((TF));
 #else
 #define FIXTFDI(x) ((DI) (TF) (x))
 #endif
+
 #if defined (SF_FN_SUPPORT)
 extern QI UFIXSFQI PARAMS ((SF));
 #else
@@ -810,15 +825,118 @@ extern DI UFIXTFDI PARAMS ((TF));
 #define UFIXTFDI(x) ((UDI) (TF) (x))
 #endif
 
-/* Semantic support utilities.  */
-
-#ifdef __GNUC__
+/* Composing/decomposing the various types.  */
 
 #ifdef SEMOPS_DEFINE_INLINE
-#define SEMOPS_INLINE
+
+SEMOPS_INLINE SF
+SUBWORDSISF (SIM_CPU *cpu, SI in)
+{
+  union { SI in; SF out; } x;
+  x.in = in;
+  return x.out;
+}
+
+SEMOPS_INLINE SI
+SUBWORDSFSI (SIM_CPU *cpu, SF in)
+{
+  union { SF in; SI out; } x;
+  x.in = in;
+  return x.out;
+}
+
+SEMOPS_INLINE SI
+SUBWORDDISI (SIM_CPU *cpu, DI in, int word)
+{
+  /* ??? endianness issues undecided */
+  if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN)
+    {
+      if (word == 0)
+	return (UDI) in >> 32;
+      else
+	return in;
+    }
+  else
+    {
+      if (word == 1)
+	return (UDI) in >> 32;
+      else
+	return in;
+    }
+}
+
+SEMOPS_INLINE SI
+SUBWORDDFSI (SIM_CPU *cpu, DF in, int word)
+{
+  /* ??? endianness issues undecided */
+  union { DF in; SI out[2]; } x;
+  x.in = in;
+  if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN)
+    return x.out[word];
+  else
+    return x.out[!word];
+}
+
+SEMOPS_INLINE SI
+SUBWORDTFSI (SIM_CPU *cpu, TF in, int word)
+{
+  /* ??? endianness issues undecided */
+  union { TF in; SI out[4]; } x;
+  x.in = in;
+  if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN)
+    return x.out[word];
+  else
+    return x.out[word ^ 3];
+}
+
+SEMOPS_INLINE DI
+JOINSIDI (SIM_CPU *cpu, SI x0, SI x1)
+{
+  if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN)
+    return MAKEDI (x0, x1);
+  else
+    return MAKEDI (x1, x0);
+}
+
+SEMOPS_INLINE DF
+JOINSIDF (SIM_CPU *cpu, SI x0, SI x1)
+{
+  union { SI in[2]; DF out; } x;
+  if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN)
+    x.in[0] = x0, x.in[1] = x1;
+  else
+    x.in[1] = x0, x.in[0] = x1;
+  return x.out;
+}
+
+SEMOPS_INLINE TF
+JOINSITF (SIM_CPU *cpu, SI x0, SI x1, SI x2, SI x3)
+{
+  union { SI in[4]; TF out; } x;
+  if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN)
+    x.in[0] = x0, x.in[1] = x1, x.in[2] = x2, x.in[3] = x3;
+  else
+    x.in[3] = x0, x.in[2] = x1, x.in[1] = x2, x.in[0] = x3;
+  return x.out;
+}
+
 #else
-#define SEMOPS_INLINE extern inline
-#endif
+
+SF SUBWORDSISF (SIM_CPU *, SI);
+SI SUBWORDSFSI (SIM_CPU *, SF);
+SI SUBWORDDISI (SIM_CPU *, DI, int);
+SI SUBWORDDFSI (SIM_CPU *, DF, int);
+SI SUBWORDTFSI (SIM_CPU *, TF, int);
+
+DI JOINSIDI (SIM_CPU *, SI, SI);
+DF JOINSIDF (SIM_CPU *, SI, SI);
+TF JOINSITF (SIM_CPU *, SI, SI, SI, SI);
+
+#endif /* SUBWORD,JOIN */
+
+/* Semantic support utilities.  */
+
+#ifdef SEMOPS_DEFINE_INLINE
 
 SEMOPS_INLINE SI
 ADDCSI (SI a, SI b, BI c)
@@ -877,21 +995,5 @@ UBI SUBCFSI (SI, SI, BI);
 UBI SUBOFSI (SI, SI, BI);
 
 #endif
-
-/* DI mode support if "long long" doesn't exist.
-   At one point CGEN supported K&R C compilers, and ANSI C compilers without
-   "long long".  One can argue the various merits of keeping this in or
-   throwing it out.  I went to the trouble of adding it so for the time being
-   I'm leaving it in.  */
-
-#ifdef DI_FN_SUPPORT
-
-DI make_struct_di (SI, SI);
-/* FIXME: needed? */
-DI CONVHIDI (HI);
-DI CONVSIDI (SI);
-SI CONVDISI (DI);
-
-#endif /* DI_FN_SUPPORT */
 
 #endif /* CGEN_SEM_OPS_H */
diff --git a/sim/common/cgen-run.c b/sim/common/cgen-run.c
index 07ee191..031bc1c 100644
--- a/sim/common/cgen-run.c
+++ b/sim/common/cgen-run.c
@@ -93,9 +93,13 @@ sim_resume (SIM_DESC sd, int step, int siggnal)
 	 way to identify this case.  */
       int max_insns = (step
 		       ? 1
-		       : (nr_cpus == 1 /*&& wip:no-events*/)
+		       : (nr_cpus == 1
+			  /*&& wip:no-events*/
+			  /* Don't do this if running under gdb, need to
+			     poll ui for events.  */
+			  && STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
 		       ? 0
-		       : 4); /*FIXME: magic number*/
+		       : 8); /*FIXME: magic number*/
       int fast_p = STATE_RUN_FAST_P (sd);
 
       sim_events_preprocess (sd, last_cpu_nr >= nr_cpus, next_cpu_nr >= nr_cpus);
diff --git a/sim/common/cgen-trace.c b/sim/common/cgen-trace.c
index 9b7d1fa..db852d5 100644
--- a/sim/common/cgen-trace.c
+++ b/sim/common/cgen-trace.c
@@ -380,12 +380,12 @@ sim_cgen_disassemble_insn (SIM_CPU *cpu, const CGEN_INSN *insn,
   length = sim_core_read_buffer (sd, cpu, read_map, &insn_buf, pc,
 				 insn_length);
 
-  switch (min (CGEN_BASE_INSN_SIZE, insn_length))
+  switch (min (cd->base_insn_bitsize, insn_bit_length))
     {
     case 0 : return; /* fake insn, typically "compile" (aka "invalid") */
-    case 1 : insn_value = insn_buf.bytes[0]; break;
-    case 2 : insn_value = T2H_2 (insn_buf.shorts[0]); break;
-    case 4 : insn_value = T2H_4 (insn_buf.words[0]); break;
+    case 8 : insn_value = insn_buf.bytes[0]; break;
+    case 16 : insn_value = T2H_2 (insn_buf.shorts[0]); break;
+    case 32 : insn_value = T2H_4 (insn_buf.words[0]); break;
     default: abort ();
     }
 
diff --git a/sim/common/cgen-types.h b/sim/common/cgen-types.h
index e57e601..28c7205 100644
--- a/sim/common/cgen-types.h
+++ b/sim/common/cgen-types.h
@@ -100,10 +100,10 @@ extern DI make_struct_di (SI, SI);
 
 /* FIXME: Need to provide libraries if these aren't appropriate for target,
    or user's needs.  */
-typedef float SF;
-typedef double DF;
-typedef double XF; /* FIXME: configure, provide library */
-typedef double TF; /* FIXME: configure, provide library */
+typedef float SF;  /* FIXME: struct */
+typedef double DF; /* FIXME: struct */
+typedef struct { SI parts[3]; } XF; /* FIXME: configure, provide library */
+typedef struct { SI parts[4]; } TF; /* FIXME: configure, provide library */
 
 /* These are used to record extracted raw data from an instruction, among other
    things.  It must be a host data type, and not a target one.  */
diff --git a/sim/common/cgen-utils.c b/sim/common/cgen-utils.c
index 2faff5c..b1c9f02 100644
--- a/sim/common/cgen-utils.c
+++ b/sim/common/cgen-utils.c
@@ -59,28 +59,22 @@ const char *mode_names[] = {
 static const CGEN_IBASE virtual_insn_entries[] =
 {
   {
-    VIRTUAL_INSN_X_INVALID, "--invalid--", NULL, 0,
-    { CGEN_INSN_NBOOL_ATTRS, V, { 0 } }
+    VIRTUAL_INSN_X_INVALID, "--invalid--", NULL, 0, { V, { 0 } }
   },
   {
-    VIRTUAL_INSN_X_BEFORE, "--before--", NULL, 0,
-    { CGEN_INSN_NBOOL_ATTRS, V, { 0 } }
+    VIRTUAL_INSN_X_BEFORE, "--before--", NULL, 0, { V, { 0 } }
   },
   {
-    VIRTUAL_INSN_X_AFTER, "--after--", NULL, 0,
-    { CGEN_INSN_NBOOL_ATTRS, V, { 0 } }
+    VIRTUAL_INSN_X_AFTER, "--after--", NULL, 0, { V, { 0 } }
   },
   {
-    VIRTUAL_INSN_X_BEGIN, "--begin--", NULL, 0,
-    { CGEN_INSN_NBOOL_ATTRS, V, { 0 } }
+    VIRTUAL_INSN_X_BEGIN, "--begin--", NULL, 0, { V, { 0 } }
   },
   {
-    VIRTUAL_INSN_X_CHAIN, "--chain--", NULL, 0,
-    { CGEN_INSN_NBOOL_ATTRS, V, { 0 } }
+    VIRTUAL_INSN_X_CHAIN, "--chain--", NULL, 0, { V, { 0 } }
   },
   {
-    VIRTUAL_INSN_X_CTI_CHAIN, "--cti-chain--", NULL, 0,
-    { CGEN_INSN_NBOOL_ATTRS, V, { 0 } }
+    VIRTUAL_INSN_X_CTI_CHAIN, "--cti-chain--", NULL, 0, { V, { 0 } }
   }
 };
 
diff --git a/sim/common/nrun.c b/sim/common/nrun.c
index 42be33e..2f13b1f 100644
--- a/sim/common/nrun.c
+++ b/sim/common/nrun.c
@@ -206,9 +206,3 @@ usage ()
   fprintf (stderr, "Run `%s --help' for full list of options.\n", myname);
   exit (1);
 }
-
-
-#ifdef __CYGWIN32__
-/* no-op GUI update hook for standalone sim */
-void (*ui_loop_hook) PARAMS ((int)) = NULL;
-#endif
diff --git a/sim/common/run.c b/sim/common/run.c
index 2a701bc..72d7509 100644
--- a/sim/common/run.c
+++ b/sim/common/run.c
@@ -56,12 +56,16 @@ extern host_callback default_callback;
 
 static char *myname;
 
-
 /* NOTE: sim_size() and sim_trace() are going away */
 extern int sim_trace PARAMS ((SIM_DESC sd));
 
 extern int getopt ();
 
+#ifdef NEED_UI_LOOP_HOOK
+/* Gdb foolery. This is only needed for gdb using a gui. */
+int (*ui_loop_hook) PARAMS ((int signo));
+#endif
+
 static SIM_DESC sd;
 
 static RETSIGTYPE
diff --git a/sim/common/sim-core.c b/sim/common/sim-core.c
index 36627a2..f7579c4 100644
--- a/sim/common/sim-core.c
+++ b/sim/common/sim-core.c
@@ -29,13 +29,6 @@
 #include "sim-hw.h"
 #endif
 
-#if (WITH_DEVICES)
-/* TODO: create sim/common/device.h */
-void device_error (device *me, char* message, ...);
-int device_io_read_buffer(device *me, void *dest, int space, address_word addr, unsigned nr_bytes, sim_cpu *processor, sim_cia cia);
-int device_io_write_buffer(device *me, const void *source, int space, address_word addr, unsigned nr_bytes, sim_cpu *processor, sim_cia cia);
-#endif
-
 /* "core" module install handler.
 
    This is called via sim_module_install to install the "core"
@@ -534,6 +527,7 @@ sim_core_read_buffer (SIM_DESC sd,
     if (mapping->device != NULL)
       {
 	int nr_bytes = len - count;
+	sim_cia cia = cpu ? CIA_GET (cpu) : NULL_CIA;
 	if (raddr + nr_bytes - 1> mapping->bound)
 	  nr_bytes = mapping->bound - raddr + 1;
 	if (device_io_read_buffer (mapping->device,
@@ -541,8 +535,9 @@ sim_core_read_buffer (SIM_DESC sd,
 				   mapping->space,
 				   raddr,
 				   nr_bytes, 
+				   sd,
 				   cpu, 
-				   CIA_GET (cpu)) != nr_bytes)
+				   cia) != nr_bytes)
 	  break;
 	count += nr_bytes;
 	continue;
@@ -599,6 +594,7 @@ sim_core_write_buffer (SIM_DESC sd,
 	  && mapping->device != NULL)
 	{
 	  int nr_bytes = len - count;
+	  sim_cia cia = cpu ? CIA_GET (cpu) : NULL_CIA;
 	  if (raddr + nr_bytes - 1 > mapping->bound)
 	    nr_bytes = mapping->bound - raddr + 1;
 	  if (device_io_write_buffer (mapping->device,
@@ -606,8 +602,9 @@ sim_core_write_buffer (SIM_DESC sd,
 				      mapping->space,
 				      raddr,
 				      nr_bytes,
+				      sd,
 				      cpu, 
-				      CIA_GET(cpu)) != nr_bytes)
+				      cia) != nr_bytes)
 	    break;
 	  count += nr_bytes;
 	  continue;
diff --git a/sim/common/sim-core.h b/sim/common/sim-core.h
index 7bf15a3..182569e 100644
--- a/sim/common/sim-core.h
+++ b/sim/common/sim-core.h
@@ -340,4 +340,13 @@ DECLARE_SIM_CORE_READ_N(misaligned,7,8)
 #undef DECLARE_SIM_CORE_READ_N
 
 
+#if (WITH_DEVICES)
+/* TODO: create sim/common/device.h */
+/* These are defined with each particular cpu.  */
+void device_error (device *me, char* message, ...);
+int device_io_read_buffer(device *me, void *dest, int space, address_word addr, unsigned nr_bytes, SIM_DESC sd, sim_cpu *processor, sim_cia cia);
+int device_io_write_buffer(device *me, const void *source, int space, address_word addr, unsigned nr_bytes, SIM_DESC sd, sim_cpu *processor, sim_cia cia);
+#endif
+
+
 #endif
diff --git a/sim/common/sim-events.c b/sim/common/sim-events.c
index 4b7d9b4..fc21164 100644
--- a/sim/common/sim-events.c
+++ b/sim/common/sim-events.c
@@ -39,15 +39,6 @@
 
 #include <signal.h> /* For SIGPROCMASK et.al. */
 
-#if __CYGWIN32__
-/* The ui_loop_hook is called to keep the GUI alive while the simulator
-   is running.  The counter is to make sure we do not wake it too often.
-*/
-
-extern void (*ui_loop_hook) PARAMS ((int));
-static unsigned int ui_loop_hook_counter = 0;
-#endif
-
 typedef enum {
   watch_invalid,
 
@@ -1171,18 +1162,6 @@ sim_events_process (SIM_DESC sd)
 
   /* this round of processing complete */
   events->nr_ticks_to_process = 0;
-
-#if __CYGWIN32__
-  /* Now call the ui_loop_hook to give the gui a chance to
-     process events. */
-  
-  if (ui_loop_hook != NULL)
-    {
-      /* attempt to limit calls to 1-10 per second */
-      if (! (ui_loop_hook_counter++ & 0xf))
-	(*ui_loop_hook) (-2); /* magic */
-    }
-#endif
 }
 
 #endif
diff --git a/sim/common/sim-io.c b/sim/common/sim-io.c
index f3d2f67..26f4445 100644
--- a/sim/common/sim-io.c
+++ b/sim/common/sim-io.c
@@ -33,6 +33,13 @@
 #include <unistd.h>
 #endif
 
+/* Define the rate at which the simulator should poll the host
+   for a quit. */
+#ifndef POLL_QUIT_INTERVAL
+#define POLL_QUIT_INTERVAL 0x10
+#endif
+
+static int poll_quit_count = POLL_QUIT_INTERVAL;
 
 /* See the file include/callbacks.h for a description */
 
@@ -304,9 +311,12 @@ sim_io_error(SIM_DESC sd,
 void
 sim_io_poll_quit(SIM_DESC sd)
 {
-  if (STATE_CALLBACK (sd)->poll_quit != NULL)
-    if (STATE_CALLBACK (sd)->poll_quit (STATE_CALLBACK (sd)))
-      sim_stop (sd);
+  if (STATE_CALLBACK (sd)->poll_quit != NULL && poll_quit_count-- < 0)
+    {
+      poll_quit_count = POLL_QUIT_INTERVAL;
+      if (STATE_CALLBACK (sd)->poll_quit (STATE_CALLBACK (sd)))
+	sim_stop (sd);
+    }
 }
 
 
diff --git a/sim/common/sim-memopt.c b/sim/common/sim-memopt.c
index be52a66..6e12a45 100644
--- a/sim/common/sim-memopt.c
+++ b/sim/common/sim-memopt.c
@@ -449,6 +449,10 @@ sim_memory_uninstall (SIM_DESC sd)
 
       /* delete it and its aliases */
       alias = *entry;
+
+      /* next victim */
+      *entry = (*entry)->next;
+
       while (alias != NULL)
 	{
 	  sim_memopt *dead = alias;
@@ -456,9 +460,6 @@ sim_memory_uninstall (SIM_DESC sd)
 	  sim_core_detach (sd, NULL, dead->level, dead->space, dead->addr);
 	  zfree (dead);
 	}
-
-      /* next victim */
-      *entry = (*entry)->next;
     }
 }
 
diff --git a/sim/common/sim-model.h b/sim/common/sim-model.h
index 6f7769a..5272815 100644
--- a/sim/common/sim-model.h
+++ b/sim/common/sim-model.h
@@ -79,6 +79,9 @@ typedef struct {
   /* This is the argument to bfd_scan_arch.  */
   const char *bfd_name;
 #define MACH_BFD_NAME(m) ((m)->bfd_name)
+  enum mach_attr num;
+#define MACH_NUM(m) ((m)->num)
+
   int word_bitsize;
 #define MACH_WORD_BITSIZE(m) ((m)->word_bitsize)
   int addr_bitsize;
diff --git a/sim/common/sim-n-core.h b/sim/common/sim-n-core.h
index 46eca03..7a04a9f 100644
--- a/sim/common/sim-n-core.h
+++ b/sim/common/sim-n-core.h
@@ -167,7 +167,7 @@ sim_core_read_aligned_N(sim_cpu *cpu,
       if (WITH_CALLBACK_MEMORY && mapping->device != NULL)
 	{
 	  unsigned_M data;
-	  if (device_io_read_buffer (mapping->device, &data, mapping->space, addr, N, cpu, cia) != N)
+	  if (device_io_read_buffer (mapping->device, &data, mapping->space, addr, N, CPU_STATE (cpu), cpu, cia) != N)
 	    device_error (mapping->device, "internal error - %s - io_read_buffer should not fail",
 			  XSTRING (sim_core_read_aligned_N));
 	  val = T2H_M (data);
@@ -298,7 +298,7 @@ sim_core_write_aligned_N(sim_cpu *cpu,
       if (WITH_CALLBACK_MEMORY && mapping->device != NULL)
 	{
 	  unsigned_M data = H2T_M (val);
-	  if (device_io_write_buffer (mapping->device, &data, mapping->space, addr, N, cpu, cia) != N)
+	  if (device_io_write_buffer (mapping->device, &data, mapping->space, addr, N, CPU_STATE (cpu), cpu, cia) != N)
 	    device_error (mapping->device, "internal error - %s - io_write_buffer should not fail",
 			  XSTRING (sim_core_write_aligned_N));
 	  break;