#include <signal.h>
+
+#if WITH_COMMON
+#include "sim-main.h"
+#include "sim-options.h"
+#include "sim-hw.h"
+#else
+#include "mn10300_sim.h"
+#endif
+
#include "sysdep.h"
#include "bfd.h"
+#include "sim-assert.h"
-#include "mn10300_sim.h"
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#ifdef HAVE_STRING_H
+#include <string.h>
+#else
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#endif
+
+#include "bfd.h"
#ifndef INLINE
#ifdef __GNUC__
#endif
#endif
+
host_callback *mn10300_callback;
int mn10300_debug;
+struct _state State;
+
+
+/* simulation target board. NULL=default configuration */
+static char* board = NULL;
+
+static DECLARE_OPTION_HANDLER (mn10300_option_handler);
+
+enum {
+ OPTION_BOARD = OPTION_START,
+};
+
+static SIM_RC
+mn10300_option_handler (sd, cpu, opt, arg, is_command)
+ SIM_DESC sd;
+ sim_cpu *cpu;
+ int opt;
+ char *arg;
+ int is_command;
+{
+ int cpu_nr;
+ switch (opt)
+ {
+ case OPTION_BOARD:
+ {
+ if (arg)
+ {
+ board = zalloc(strlen(arg) + 1);
+ strcpy(board, arg);
+ }
+ return SIM_RC_OK;
+ }
+ }
+
+ return SIM_RC_OK;
+}
-static struct hash_entry *lookup_hash PARAMS ((uint32 ins, int));
+static const OPTION mn10300_options[] =
+{
+#define BOARD_AM32 "stdeval1"
+ { {"board", required_argument, NULL, OPTION_BOARD},
+ '\0', "none" /* rely on compile-time string concatenation for other options */
+ "|" BOARD_AM32
+ , "Customize simulation for a particular board.", mn10300_option_handler },
+
+ { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
+};
+
+#if WITH_COMMON
+#else
+static void dispatch PARAMS ((uint32, uint32, int));
static long hash PARAMS ((long));
static void init_system PARAMS ((void));
-#define MAX_HASH 63
+
+static SIM_OPEN_KIND sim_kind;
+static char *myname;
+#define MAX_HASH 127
struct hash_entry
{
long opcode;
long mask;
struct simops *ops;
+#ifdef HASH_STAT
+ unsigned long count;
+#endif
};
+static int max_mem = 0;
struct hash_entry hash_table[MAX_HASH+1];
hash(insn)
long insn;
{
- /* These are one byte insns. */
+ /* These are one byte insns, we special case these since, in theory,
+ they should be the most heavily used. */
if ((insn & 0xffffff00) == 0)
{
- if ((insn & 0xf0) == 0x00
- || (insn & 0xf0) == 0x40)
- return (insn & 0xf3) & 0x3f;
-
- if ((insn & 0xf0) == 0x10
- || (insn & 0xf0) == 0x30
- || (insn & 0xf0) == 0x50)
- return (insn & 0xfc) & 0x3f;
-
- if ((insn & 0xf0) == 0x60
- || (insn & 0xf0) == 0x70
- || (insn & 0xf0) == 0x80
- || (insn & 0xf0) == 0x90
- || (insn & 0xf0) == 0xa0
- || (insn & 0xf0) == 0xb0
- || (insn & 0xf0) == 0xe0)
- return (insn & 0xf0) & 0x3f;
-
- return (insn & 0xff) & 0x3f;
+ switch (insn & 0xf0)
+ {
+ case 0x00:
+ return 0x70;
+
+ case 0x40:
+ return 0x71;
+
+ case 0x10:
+ return 0x72;
+
+ case 0x30:
+ return 0x73;
+
+ case 0x50:
+ return 0x74;
+
+ case 0x60:
+ return 0x75;
+
+ case 0x70:
+ return 0x76;
+
+ case 0x80:
+ return 0x77;
+
+ case 0x90:
+ return 0x78;
+
+ case 0xa0:
+ return 0x79;
+
+ case 0xb0:
+ return 0x7a;
+
+ case 0xe0:
+ return 0x7b;
+
+ default:
+ return 0x7c;
+ }
}
/* These are two byte insns */
{
if ((insn & 0xf000) == 0x2000
|| (insn & 0xf000) == 0x5000)
- return ((insn & 0xfc00) >> 8) & 0x3f;
+ return ((insn & 0xfc00) >> 8) & 0x7f;
if ((insn & 0xf000) == 0x4000)
- return ((insn & 0xf300) >> 8) & 0x3f;
+ return ((insn & 0xf300) >> 8) & 0x7f;
if ((insn & 0xf000) == 0x8000
|| (insn & 0xf000) == 0x9000
|| (insn & 0xf000) == 0xa000
|| (insn & 0xf000) == 0xb000)
- return ((insn & 0xf000) >> 8) & 0x3f;
+ return ((insn & 0xf000) >> 8) & 0x7f;
+
+ if ((insn & 0xff00) == 0xf000
+ || (insn & 0xff00) == 0xf100
+ || (insn & 0xff00) == 0xf200
+ || (insn & 0xff00) == 0xf500
+ || (insn & 0xff00) == 0xf600)
+ return ((insn & 0xfff0) >> 4) & 0x7f;
+
+ if ((insn & 0xf000) == 0xc000)
+ return ((insn & 0xff00) >> 8) & 0x7f;
- return ((insn & 0xff00) >> 8) & 0x3f;
+ return ((insn & 0xffc0) >> 6) & 0x7f;
}
/* These are three byte insns. */
if ((insn & 0xff000000) == 0)
{
if ((insn & 0xf00000) == 0x000000)
- return ((insn & 0xf30000) >> 16) & 0x3f;
+ return ((insn & 0xf30000) >> 16) & 0x7f;
if ((insn & 0xf00000) == 0x200000
|| (insn & 0xf00000) == 0x300000)
- return ((insn & 0xfc0000) >> 16) & 0x3f;
+ return ((insn & 0xfc0000) >> 16) & 0x7f;
- return ((insn & 0xff0000) >> 16) & 0x3f;
+ if ((insn & 0xff0000) == 0xf80000)
+ return ((insn & 0xfff000) >> 12) & 0x7f;
+
+ if ((insn & 0xff0000) == 0xf90000)
+ return ((insn & 0xfffc00) >> 10) & 0x7f;
+
+ return ((insn & 0xff0000) >> 16) & 0x7f;
}
/* These are four byte or larger insns. */
- return ((insn & 0xff000000) >> 24) & 0x3f;
+ if ((insn & 0xf0000000) == 0xf0000000)
+ return ((insn & 0xfff00000) >> 20) & 0x7f;
+
+ return ((insn & 0xff000000) >> 24) & 0x7f;
}
-static struct hash_entry *
-lookup_hash (ins, length)
- uint32 ins;
+static INLINE void
+dispatch (insn, extension, length)
+ uint32 insn;
+ uint32 extension;
int length;
{
struct hash_entry *h;
- h = &hash_table[hash(ins)];
+ h = &hash_table[hash(insn)];
- while ((ins & h->mask) != h->opcode
- || (length != h->ops->length))
+ while ((insn & h->mask) != h->opcode
+ || (length != h->ops->length))
{
- if (h->next == NULL)
+ if (!h->next)
{
- (*mn10300_callback->printf_filtered) (mn10300_callback, "ERROR looking up hash for 0x%x, PC=0x%x\n", ins, PC);
+ (*mn10300_callback->printf_filtered) (mn10300_callback,
+ "ERROR looking up hash for 0x%x, PC=0x%x\n", insn, PC);
exit(1);
}
h = h->next;
}
- return (h);
-}
-
-/* FIXME These would more efficient to use than load_mem/store_mem,
- but need to be changed to use the memory map. */
-
-uint8
-get_byte (x)
- uint8 *x;
-{
- return *x;
-}
-
-uint16
-get_half (x)
- uint8 *x;
-{
- uint8 *a = x;
- return (a[1] << 8) + (a[0]);
-}
-
-uint32
-get_word (x)
- uint8 *x;
-{
- uint8 *a = x;
- return (a[3]<<24) + (a[2]<<16) + (a[1]<<8) + (a[0]);
-}
-
-void
-put_byte (addr, data)
- uint8 *addr;
- uint8 data;
-{
- uint8 *a = addr;
- a[0] = data;
-}
-
-void
-put_half (addr, data)
- uint8 *addr;
- uint16 data;
-{
- uint8 *a = addr;
- a[0] = data & 0xff;
- a[1] = (data >> 8) & 0xff;
-}
-
-void
-put_word (addr, data)
- uint8 *addr;
- uint32 data;
-{
- uint8 *a = addr;
- a[0] = data & 0xff;
- a[1] = (data >> 8) & 0xff;
- a[2] = (data >> 16) & 0xff;
- a[3] = (data >> 24) & 0xff;
-}
-
-
-uint32
-load_mem_big (addr, len)
- SIM_ADDR addr;
- int len;
-{
- uint8 *p = addr + State.mem;
-
- switch (len)
- {
- case 1:
- return p[0];
- case 2:
- return p[0] << 8 | p[1];
- case 3:
- return p[0] << 16 | p[1] << 8 | p[2];
- case 4:
- return p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];
- default:
- abort ();
- }
-}
-
-uint32
-load_mem (addr, len)
- SIM_ADDR addr;
- int len;
-{
- uint8 *p = addr + State.mem;
- switch (len)
- {
- case 1:
- return p[0];
- case 2:
- return p[1] << 8 | p[0];
- case 3:
- return p[2] << 16 | p[1] << 8 | p[0];
- case 4:
- return p[3] << 24 | p[2] << 16 | p[1] << 8 | p[0];
- default:
- abort ();
- }
-}
-void
-store_mem (addr, len, data)
- SIM_ADDR addr;
- int len;
- uint32 data;
-{
- uint8 *p = addr + State.mem;
+#ifdef HASH_STAT
+ h->count++;
+#endif
- switch (len)
- {
- case 1:
- p[0] = data;
- return;
- case 2:
- p[0] = data;
- p[1] = data >> 8;
- return;
- case 4:
- p[0] = data;
- p[1] = data >> 8;
- p[2] = data >> 16;
- p[3] = data >> 24;
- return;
- default:
- abort ();
- }
+ /* Now call the right function. */
+ (h->ops->func)(insn, extension);
+ PC += length;
}
void
if (State.mem)
free (State.mem);
+ max_mem = 1 << power;
State.mem = (uint8 *) calloc (1, 1 << power);
if (!State.mem)
{
init_system ()
{
if (!State.mem)
- sim_size(18);
+ sim_size(19);
}
int
-sim_write (addr, buffer, size)
+sim_write (sd, addr, buffer, size)
+ SIM_DESC sd;
SIM_ADDR addr;
unsigned char *buffer;
int size;
init_system ();
for (i = 0; i < size; i++)
- store_mem (addr + i, 1, buffer[i]);
+ store_byte (addr + i, buffer[i]);
return size;
}
-void
-sim_open (args)
- char *args;
+/* Compare two opcode table entries for qsort. */
+static int
+compare_simops (arg1, arg2)
+ const PTR arg1;
+ const PTR arg2;
+{
+ unsigned long code1 = ((struct simops *)arg1)->opcode;
+ unsigned long code2 = ((struct simops *)arg2)->opcode;
+
+ if (code1 < code2)
+ return -1;
+ if (code2 < code1)
+ return 1;
+ return 0;
+}
+
+SIM_DESC
+sim_open (kind, cb, abfd, argv)
+ SIM_OPEN_KIND kind;
+ host_callback *cb;
+ struct bfd *abfd;
+ char **argv;
{
struct simops *s;
struct hash_entry *h;
- if (args != NULL)
+ char **p;
+ int i;
+
+ mn10300_callback = cb;
+
+ /* Sort the opcode array from smallest opcode to largest.
+ This will generally improve simulator performance as the smaller
+ opcodes are generally preferred to the larger opcodes. */
+ for (i = 0, s = Simops; s->func; s++, i++)
+ ;
+ qsort (Simops, i, sizeof (Simops[0]), compare_simops);
+
+ sim_kind = kind;
+ myname = argv[0];
+
+ for (p = argv + 1; *p; ++p)
{
+ if (strcmp (*p, "-E") == 0)
+ ++p; /* ignore endian spec */
+ else
#ifdef DEBUG
- if (strcmp (args, "-t") == 0)
+ if (strcmp (*p, "-t") == 0)
mn10300_debug = DEBUG;
else
#endif
- (*mn10300_callback->printf_filtered) (mn10300_callback, "ERROR: unsupported option(s): %s\n",args);
+ (*mn10300_callback->printf_filtered) (mn10300_callback, "ERROR: unsupported option(s): %s\n",*p);
}
- /* put all the opcodes in the hash table */
+ /* put all the opcodes in the hash table */
for (s = Simops; s->func; s++)
{
h = &hash_table[hash(s->opcode)];
-
+
/* go to the last entry in the chain */
while (h->next)
- h = h->next;
+ {
+ /* Don't insert the same opcode more than once. */
+ if (h->opcode == s->opcode
+ && h->mask == s->mask
+ && h->ops == s)
+ break;
+ else
+ h = h->next;
+ }
+
+ /* Don't insert the same opcode more than once. */
+ if (h->opcode == s->opcode
+ && h->mask == s->mask
+ && h->ops == s)
+ continue;
if (h->ops)
{
h->ops = s;
h->mask = s->mask;
h->opcode = s->opcode;
+#if HASH_STAT
+ h->count = 0;
+#endif
}
+
+
+ /* fudge our descriptor for now */
+ return (SIM_DESC) 1;
}
void
-sim_close (quitting)
+sim_close (sd, quitting)
+ SIM_DESC sd;
int quitting;
{
/* nothing to do */
(*mn10300_callback->printf_filtered) (mn10300_callback, "sim_set_profile_size %d\n", n);
}
+int
+sim_stop (sd)
+ SIM_DESC sd;
+{
+ return 0;
+}
+
void
-sim_resume (step, siggnal)
+sim_resume (sd, step, siggnal)
+ SIM_DESC sd;
int step, siggnal;
{
uint32 inst;
else
State.exception = 0;
+ State.exited = 0;
+
do
{
unsigned long insn, extension;
/* Fetch the current instruction. */
- inst = load_mem_big (PC, 1);
+ inst = load_mem_big (PC, 2);
oldpc = PC;
- /* These are one byte insns. */
- if ((inst & 0xf3) == 0x00
- || (inst & 0xf0) == 0x10
- || (inst & 0xfc) == 0x3c
- || (inst & 0xf3) == 0x41
- || (inst & 0xf3) == 0x40
- || (inst & 0xfc) == 0x50
- || (inst & 0xfc) == 0x54
- || (inst & 0xf0) == 0x60
- || (inst & 0xf0) == 0x70
- || ((inst & 0xf0) == 0x80
- && (inst & 0x0c) >> 2 != (inst & 0x03))
- || ((inst & 0xf0) == 0x90
- && (inst & 0x0c) >> 2 != (inst & 0x03))
- || ((inst & 0xf0) == 0xa0
- && (inst & 0x0c) >> 2 != (inst & 0x03))
- || ((inst & 0xf0) == 0xb0
- && (inst & 0x0c) >> 2 != (inst & 0x03))
- || (inst & 0xff) == 0xcb
- || (inst & 0xfc) == 0xd0
- || (inst & 0xfc) == 0xd4
- || (inst & 0xfc) == 0xd8
- || (inst & 0xf0) == 0xe0)
- {
- insn = inst;
- h = lookup_hash (insn, 1);
- extension = 0;
- (h->ops->func)(insn, extension);
- PC += 1;
- }
-
- /* These are two byte insns. */
- else if ((inst & 0xf0) == 0x80
- || (inst & 0xf0) == 0x90
- || (inst & 0xf0) == 0xa0
- || (inst & 0xf0) == 0xb0
- || (inst & 0xfc) == 0x20
- || (inst & 0xfc) == 0x28
- || (inst & 0xf3) == 0x43
- || (inst & 0xf3) == 0x42
- || (inst & 0xfc) == 0x58
- || (inst & 0xfc) == 0x5c
- || ((inst & 0xf0) == 0xc0
- && (inst & 0xff) != 0xcb
- && (inst & 0xff) != 0xcc
- && (inst & 0xff) != 0xcd)
- || (inst & 0xff) == 0xf0
- || (inst & 0xff) == 0xf1
- || (inst & 0xff) == 0xf2
- || (inst & 0xff) == 0xf3
- || (inst & 0xff) == 0xf4
- || (inst & 0xff) == 0xf5
- || (inst & 0xff) == 0xf6)
- {
- insn = load_mem_big (PC, 2);
- h = lookup_hash (insn, 2);
- extension = 0;
- (h->ops->func)(insn, extension);
- PC += 2;
- }
-
- /* These are three byte insns. */
- else if ((inst & 0xff) == 0xf8
- || (inst & 0xff) == 0xcc
- || (inst & 0xff) == 0xf9
- || (inst & 0xf3) == 0x01
- || (inst & 0xf3) == 0x02
- || (inst & 0xf3) == 0x03
- || (inst & 0xfc) == 0x24
- || (inst & 0xfc) == 0x2c
- || (inst & 0xfc) == 0x30
- || (inst & 0xfc) == 0x34
- || (inst & 0xfc) == 0x38
- || (inst & 0xff) == 0xde
- || (inst & 0xff) == 0xdf
- || (inst & 0xff) == 0xcc)
- {
- insn = load_mem_big (PC, 3);
- h = lookup_hash (insn, 3);
- extension = 0;
- (h->ops->func)(insn, extension);
- PC += 3;
- }
-
- /* These are four byte insns. */
- else if ((inst & 0xff) == 0xfa
- || (inst & 0xff) == 0xfb)
- {
- insn = load_mem_big (PC, 4);
- h = lookup_hash (insn, 4);
- extension = 0;
- (h->ops->func)();
- PC += 4;
- }
-
- /* These are five byte insns. */
- else if ((inst & 0xff) == 0xcd
- || (inst & 0xff) == 0xdc)
- {
- insn = load_mem_big (PC, 4);
- h = lookup_hash (insn, 5);
- extension = load_mem_big (PC + 4, 1);
- (h->ops->func)(insn, extension);
- PC += 5;
- }
-
- /* These are six byte insns. */
- else if ((inst & 0xff) == 0xfd
- || (inst & 0xff) == 0xfc)
- {
- insn = load_mem_big (PC, 4);
- h = lookup_hash (insn, 6);
- extension = load_mem_big (PC + 4, 2);
- (h->ops->func)(insn, extension);
- PC += 6;
- }
+ /* Using a giant case statement may seem like a waste because of the
+ code/rodata size the table itself will consume. However, using
+ a giant case statement speeds up the simulator by 10-15% by avoiding
+ cascading if/else statements or cascading case statements. */
- /* Else its a seven byte insns (in theory). */
- else
+ switch ((inst >> 8) & 0xff)
{
- insn = load_mem_big (PC, 4);
- h = lookup_hash (insn, 7);
- extension = load_mem_big (PC + 4, 3);
- (h->ops->func)(insn, extension);
- PC += 7;
+ /* All the single byte insns except 0x80, 0x90, 0xa0, 0xb0
+ which must be handled specially. */
+ case 0x00:
+ case 0x04:
+ case 0x08:
+ case 0x0c:
+ case 0x10:
+ case 0x11:
+ case 0x12:
+ case 0x13:
+ case 0x14:
+ case 0x15:
+ case 0x16:
+ case 0x17:
+ case 0x18:
+ case 0x19:
+ case 0x1a:
+ case 0x1b:
+ case 0x1c:
+ case 0x1d:
+ case 0x1e:
+ case 0x1f:
+ case 0x3c:
+ case 0x3d:
+ case 0x3e:
+ case 0x3f:
+ case 0x40:
+ case 0x41:
+ case 0x44:
+ case 0x45:
+ case 0x48:
+ case 0x49:
+ case 0x4c:
+ case 0x4d:
+ case 0x50:
+ case 0x51:
+ case 0x52:
+ case 0x53:
+ case 0x54:
+ case 0x55:
+ case 0x56:
+ case 0x57:
+ case 0x60:
+ case 0x61:
+ case 0x62:
+ case 0x63:
+ case 0x64:
+ case 0x65:
+ case 0x66:
+ case 0x67:
+ case 0x68:
+ case 0x69:
+ case 0x6a:
+ case 0x6b:
+ case 0x6c:
+ case 0x6d:
+ case 0x6e:
+ case 0x6f:
+ case 0x70:
+ case 0x71:
+ case 0x72:
+ case 0x73:
+ case 0x74:
+ case 0x75:
+ case 0x76:
+ case 0x77:
+ case 0x78:
+ case 0x79:
+ case 0x7a:
+ case 0x7b:
+ case 0x7c:
+ case 0x7d:
+ case 0x7e:
+ case 0x7f:
+ case 0xcb:
+ case 0xd0:
+ case 0xd1:
+ case 0xd2:
+ case 0xd3:
+ case 0xd4:
+ case 0xd5:
+ case 0xd6:
+ case 0xd7:
+ case 0xd8:
+ case 0xd9:
+ case 0xda:
+ case 0xdb:
+ case 0xe0:
+ case 0xe1:
+ case 0xe2:
+ case 0xe3:
+ case 0xe4:
+ case 0xe5:
+ case 0xe6:
+ case 0xe7:
+ case 0xe8:
+ case 0xe9:
+ case 0xea:
+ case 0xeb:
+ case 0xec:
+ case 0xed:
+ case 0xee:
+ case 0xef:
+ case 0xff:
+ insn = (inst >> 8) & 0xff;
+ extension = 0;
+ dispatch (insn, extension, 1);
+ break;
+
+ /* Special cases where dm == dn is used to encode a different
+ instruction. */
+ case 0x80:
+ case 0x85:
+ case 0x8a:
+ case 0x8f:
+ case 0x90:
+ case 0x95:
+ case 0x9a:
+ case 0x9f:
+ case 0xa0:
+ case 0xa5:
+ case 0xaa:
+ case 0xaf:
+ case 0xb0:
+ case 0xb5:
+ case 0xba:
+ case 0xbf:
+ insn = inst;
+ extension = 0;
+ dispatch (insn, extension, 2);
+ break;
+
+ case 0x81:
+ case 0x82:
+ case 0x83:
+ case 0x84:
+ case 0x86:
+ case 0x87:
+ case 0x88:
+ case 0x89:
+ case 0x8b:
+ case 0x8c:
+ case 0x8d:
+ case 0x8e:
+ case 0x91:
+ case 0x92:
+ case 0x93:
+ case 0x94:
+ case 0x96:
+ case 0x97:
+ case 0x98:
+ case 0x99:
+ case 0x9b:
+ case 0x9c:
+ case 0x9d:
+ case 0x9e:
+ case 0xa1:
+ case 0xa2:
+ case 0xa3:
+ case 0xa4:
+ case 0xa6:
+ case 0xa7:
+ case 0xa8:
+ case 0xa9:
+ case 0xab:
+ case 0xac:
+ case 0xad:
+ case 0xae:
+ case 0xb1:
+ case 0xb2:
+ case 0xb3:
+ case 0xb4:
+ case 0xb6:
+ case 0xb7:
+ case 0xb8:
+ case 0xb9:
+ case 0xbb:
+ case 0xbc:
+ case 0xbd:
+ case 0xbe:
+ insn = (inst >> 8) & 0xff;
+ extension = 0;
+ dispatch (insn, extension, 1);
+ break;
+
+ /* The two byte instructions. */
+ case 0x20:
+ case 0x21:
+ case 0x22:
+ case 0x23:
+ case 0x28:
+ case 0x29:
+ case 0x2a:
+ case 0x2b:
+ case 0x42:
+ case 0x43:
+ case 0x46:
+ case 0x47:
+ case 0x4a:
+ case 0x4b:
+ case 0x4e:
+ case 0x4f:
+ case 0x58:
+ case 0x59:
+ case 0x5a:
+ case 0x5b:
+ case 0x5c:
+ case 0x5d:
+ case 0x5e:
+ case 0x5f:
+ case 0xc0:
+ case 0xc1:
+ case 0xc2:
+ case 0xc3:
+ case 0xc4:
+ case 0xc5:
+ case 0xc6:
+ case 0xc7:
+ case 0xc8:
+ case 0xc9:
+ case 0xca:
+ case 0xce:
+ case 0xcf:
+ case 0xf0:
+ case 0xf1:
+ case 0xf2:
+ case 0xf3:
+ case 0xf4:
+ case 0xf5:
+ case 0xf6:
+ insn = inst;
+ extension = 0;
+ dispatch (insn, extension, 2);
+ break;
+
+ /* The three byte insns with a 16bit operand in little endian
+ format. */
+ case 0x01:
+ case 0x02:
+ case 0x03:
+ case 0x05:
+ case 0x06:
+ case 0x07:
+ case 0x09:
+ case 0x0a:
+ case 0x0b:
+ case 0x0d:
+ case 0x0e:
+ case 0x0f:
+ case 0x24:
+ case 0x25:
+ case 0x26:
+ case 0x27:
+ case 0x2c:
+ case 0x2d:
+ case 0x2e:
+ case 0x2f:
+ case 0x30:
+ case 0x31:
+ case 0x32:
+ case 0x33:
+ case 0x34:
+ case 0x35:
+ case 0x36:
+ case 0x37:
+ case 0x38:
+ case 0x39:
+ case 0x3a:
+ case 0x3b:
+ case 0xcc:
+ insn = load_byte (PC);
+ insn <<= 16;
+ insn |= load_half (PC + 1);
+ extension = 0;
+ dispatch (insn, extension, 3);
+ break;
+
+ /* The three byte insns without 16bit operand. */
+ case 0xde:
+ case 0xdf:
+ case 0xf8:
+ case 0xf9:
+ insn = load_mem_big (PC, 3);
+ extension = 0;
+ dispatch (insn, extension, 3);
+ break;
+
+ /* Four byte insns. */
+ case 0xfa:
+ case 0xfb:
+ if ((inst & 0xfffc) == 0xfaf0
+ || (inst & 0xfffc) == 0xfaf4
+ || (inst & 0xfffc) == 0xfaf8)
+ insn = load_mem_big (PC, 4);
+ else
+ {
+ insn = inst;
+ insn <<= 16;
+ insn |= load_half (PC + 2);
+ extension = 0;
+ }
+ dispatch (insn, extension, 4);
+ break;
+
+ /* Five byte insns. */
+ case 0xcd:
+ insn = load_byte (PC);
+ insn <<= 24;
+ insn |= (load_half (PC + 1) << 8);
+ insn |= load_byte (PC + 3);
+ extension = load_byte (PC + 4);
+ dispatch (insn, extension, 5);
+ break;
+
+ case 0xdc:
+ insn = load_byte (PC);
+ insn <<= 24;
+ extension = load_word (PC + 1);
+ insn |= (extension & 0xffffff00) >> 8;
+ extension &= 0xff;
+ dispatch (insn, extension, 5);
+ break;
+
+ /* Six byte insns. */
+ case 0xfc:
+ case 0xfd:
+ insn = (inst << 16);
+ extension = load_word (PC + 2);
+ insn |= ((extension & 0xffff0000) >> 16);
+ extension &= 0xffff;
+ dispatch (insn, extension, 6);
+ break;
+
+ case 0xdd:
+ insn = load_byte (PC) << 24;
+ extension = load_word (PC + 1);
+ insn |= ((extension >> 8) & 0xffffff);
+ extension = (extension & 0xff) << 16;
+ extension |= load_byte (PC + 5) << 8;
+ extension |= load_byte (PC + 6);
+ dispatch (insn, extension, 7);
+ break;
+
+ case 0xfe:
+ insn = inst << 16;
+ extension = load_word (PC + 2);
+ insn |= ((extension >> 16) & 0xffff);
+ extension <<= 8;
+ extension &= 0xffff00;
+ extension |= load_byte (PC + 6);
+ dispatch (insn, extension, 7);
+ break;
+
+ default:
+ abort ();
}
}
while (!State.exception);
+
+#ifdef HASH_STAT
+ {
+ int i;
+ for (i = 0; i < MAX_HASH; i++)
+ {
+ struct hash_entry *h;
+ h = &hash_table[i];
+
+ printf("hash 0x%x:\n", i);
+
+ while (h)
+ {
+ printf("h->opcode = 0x%x, count = 0x%x\n", h->opcode, h->count);
+ h = h->next;
+ }
+
+ printf("\n\n");
+ }
+ fflush (stdout);
+ }
+#endif
+
}
int
-sim_trace ()
+sim_trace (sd)
+ SIM_DESC sd;
{
#ifdef DEBUG
mn10300_debug = DEBUG;
#endif
- sim_resume (0, 0);
+ sim_resume (sd, 0, 0);
return 1;
}
void
-sim_info (verbose)
+sim_info (sd, verbose)
+ SIM_DESC sd;
int verbose;
{
(*mn10300_callback->printf_filtered) (mn10300_callback, "sim_info\n");
}
-void
-sim_create_inferior (start_address, argv, env)
- SIM_ADDR start_address;
+SIM_RC
+sim_create_inferior (sd, abfd, argv, env)
+ SIM_DESC sd;
+ struct bfd *abfd;
char **argv;
char **env;
{
- PC = start_address;
-}
-
-void
-sim_kill ()
-{
- /* nothing to do */
+ if (abfd != NULL)
+ PC = bfd_get_start_address (abfd);
+ else
+ PC = 0;
+ return SIM_RC_OK;
}
void
This is enough to get c-torture limping though. */
void
-sim_stop_reason (reason, sigrc)
+sim_stop_reason (sd, reason, sigrc)
+ SIM_DESC sd;
enum sim_stop *reason;
int *sigrc;
{
- *reason = sim_stopped;
+ if (State.exited)
+ *reason = sim_exited;
+ else
+ *reason = sim_stopped;
+
if (State.exception == SIGQUIT)
*sigrc = 0;
else
*sigrc = State.exception;
}
-void
-sim_fetch_register (rn, memory)
- int rn;
- unsigned char *memory;
-{
- put_word (memory, State.regs[rn]);
-}
-
-void
-sim_store_register (rn, memory)
- int rn;
- unsigned char *memory;
-{
- State.regs[rn] = get_word (memory);
-}
-
int
-sim_read (addr, buffer, size)
+sim_read (sd, addr, buffer, size)
+ SIM_DESC sd;
SIM_ADDR addr;
unsigned char *buffer;
int size;
{
int i;
for (i = 0; i < size; i++)
- buffer[i] = load_mem (addr + i, 1);
+ buffer[i] = load_byte (addr + i);
return size;
}
void
-sim_do_command (cmd)
+sim_do_command (sd, cmd)
+ SIM_DESC sd;
char *cmd;
{
(*mn10300_callback->printf_filtered) (mn10300_callback, "\"%s\" is not a valid mn10300 simulator command.\n", cmd);
}
-int
-sim_load (prog, from_tty)
+SIM_RC
+sim_load (sd, prog, abfd, from_tty)
+ SIM_DESC sd;
char *prog;
+ bfd *abfd;
int from_tty;
{
- /* Return nonzero so GDB will handle it. */
- return 1;
+ extern bfd *sim_load_file (); /* ??? Don't know where this should live. */
+ bfd *prog_bfd;
+
+ prog_bfd = sim_load_file (sd, myname, mn10300_callback, prog, abfd,
+ sim_kind == SIM_OPEN_DEBUG,
+ 0, sim_write);
+ if (prog_bfd == NULL)
+ return SIM_RC_FAIL;
+ if (abfd == NULL)
+ bfd_close (prog_bfd);
+ return SIM_RC_OK;
}
+#endif /* not WITH_COMMON */
+
+
+#if WITH_COMMON
+
+/* For compatibility */
+SIM_DESC simulator;
+
+/* These default values correspond to expected usage for the chip. */
+
+SIM_DESC
+sim_open (kind, cb, abfd, argv)
+ SIM_OPEN_KIND kind;
+ host_callback *cb;
+ struct bfd *abfd;
+ char **argv;
+{
+ SIM_DESC sd = sim_state_alloc (kind, cb);
+ mn10300_callback = cb;
+
+ SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
+
+ /* for compatibility */
+ simulator = sd;
+
+ /* FIXME: should be better way of setting up interrupts. For
+ moment, only support watchpoints causing a breakpoint (gdb
+ halt). */
+ STATE_WATCHPOINTS (sd)->pc = &(PC);
+ STATE_WATCHPOINTS (sd)->sizeof_pc = sizeof (PC);
+ STATE_WATCHPOINTS (sd)->interrupt_handler = NULL;
+ STATE_WATCHPOINTS (sd)->interrupt_names = NULL;
+
+ if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
+ return 0;
+ sim_add_option_table (sd, NULL, mn10300_options);
+
+ /* Allocate core managed memory */
+ sim_do_command (sd, "memory region 0,0x100000");
+ sim_do_command (sd, "memory region 0x40000000,0x200000");
+
+ /* 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;
+ }
+
+ if ( NULL != board
+ && (strcmp(board, BOARD_AM32) == 0 ) )
+ {
+ /* environment */
+ STATE_ENVIRONMENT (sd) = OPERATING_ENVIRONMENT;
+
+ sim_do_command (sd, "memory region 0x44000000,0x40000");
+ sim_do_command (sd, "memory region 0x48000000,0x400000");
+
+ /* device support for mn1030002 */
+ /* interrupt controller */
+
+ sim_hw_parse (sd, "/mn103int@0x34000100/reg 0x34000100 0x7C 0x34000200 0x8 0x34000280 0x8");
+
+ /* DEBUG: NMI input's */
+ sim_hw_parse (sd, "/glue@0x30000000/reg 0x30000000 12");
+ sim_hw_parse (sd, "/glue@0x30000000 > int0 nmirq /mn103int");
+ sim_hw_parse (sd, "/glue@0x30000000 > int1 watchdog /mn103int");
+ sim_hw_parse (sd, "/glue@0x30000000 > int2 syserr /mn103int");
+
+ /* DEBUG: ACK input */
+ sim_hw_parse (sd, "/glue@0x30002000/reg 0x30002000 4");
+ sim_hw_parse (sd, "/glue@0x30002000 > int ack /mn103int");
+
+ /* DEBUG: LEVEL output */
+ sim_hw_parse (sd, "/glue@0x30004000/reg 0x30004000 8");
+ sim_hw_parse (sd, "/mn103int > nmi int0 /glue@0x30004000");
+ sim_hw_parse (sd, "/mn103int > level int1 /glue@0x30004000");
+
+ /* DEBUG: A bunch of interrupt inputs */
+ sim_hw_parse (sd, "/glue@0x30006000/reg 0x30006000 32");
+ sim_hw_parse (sd, "/glue@0x30006000 > int0 irq-0 /mn103int");
+ sim_hw_parse (sd, "/glue@0x30006000 > int1 irq-1 /mn103int");
+ sim_hw_parse (sd, "/glue@0x30006000 > int2 irq-2 /mn103int");
+ sim_hw_parse (sd, "/glue@0x30006000 > int3 irq-3 /mn103int");
+ sim_hw_parse (sd, "/glue@0x30006000 > int4 irq-4 /mn103int");
+ sim_hw_parse (sd, "/glue@0x30006000 > int5 irq-5 /mn103int");
+ sim_hw_parse (sd, "/glue@0x30006000 > int6 irq-6 /mn103int");
+ sim_hw_parse (sd, "/glue@0x30006000 > int7 irq-7 /mn103int");
+
+ /* processor interrupt device */
+
+ /* the device */
+ sim_hw_parse (sd, "/mn103cpu@0x20000000");
+ sim_hw_parse (sd, "/mn103cpu@0x20000000/reg 0x20000000 0x42");
+
+ /* DEBUG: ACK output wired upto a glue device */
+ sim_hw_parse (sd, "/glue@0x20002000");
+ sim_hw_parse (sd, "/glue@0x20002000/reg 0x20002000 4");
+ sim_hw_parse (sd, "/mn103cpu > ack int0 /glue@0x20002000");
+
+ /* DEBUG: RESET/NMI/LEVEL wired up to a glue device */
+ sim_hw_parse (sd, "/glue@0x20004000");
+ sim_hw_parse (sd, "/glue@0x20004000/reg 0x20004000 12");
+ sim_hw_parse (sd, "/glue@0x20004000 > int0 reset /mn103cpu");
+ sim_hw_parse (sd, "/glue@0x20004000 > int1 nmi /mn103cpu");
+ sim_hw_parse (sd, "/glue@0x20004000 > int2 level /mn103cpu");
+
+ /* REAL: The processor wired up to the real interrupt controller */
+ sim_hw_parse (sd, "/mn103cpu > ack ack /mn103int");
+ sim_hw_parse (sd, "/mn103int > level level /mn103cpu");
+ sim_hw_parse (sd, "/mn103int > nmi nmi /mn103cpu");
+
+
+ /* PAL */
+
+ /* the device */
+ sim_hw_parse (sd, "/pal@0x31000000");
+ sim_hw_parse (sd, "/pal@0x31000000/reg 0x31000000 64");
+ sim_hw_parse (sd, "/pal@0x31000000/poll? true");
+
+ /* DEBUG: PAL wired up to a glue device */
+ sim_hw_parse (sd, "/glue@0x31002000");
+ sim_hw_parse (sd, "/glue@0x31002000/reg 0x31002000 16");
+ sim_hw_parse (sd, "/pal@0x31000000 > countdown int0 /glue@0x31002000");
+ sim_hw_parse (sd, "/pal@0x31000000 > timer int1 /glue@0x31002000");
+ sim_hw_parse (sd, "/pal@0x31000000 > int int2 /glue@0x31002000");
+ sim_hw_parse (sd, "/glue@0x31002000 > int0 int3 /glue@0x31002000");
+ sim_hw_parse (sd, "/glue@0x31002000 > int1 int3 /glue@0x31002000");
+ sim_hw_parse (sd, "/glue@0x31002000 > int2 int3 /glue@0x31002000");
+
+ /* REAL: The PAL wired up to the real interrupt controller */
+ sim_hw_parse (sd, "/pal@0x31000000 > countdown irq-0 /mn103int");
+ sim_hw_parse (sd, "/pal@0x31000000 > timer irq-1 /mn103int");
+ sim_hw_parse (sd, "/pal@0x31000000 > int irq-2 /mn103int");
+
+ /* 8 and 16 bit timers */
+ sim_hw_parse (sd, "/mn103tim@0x34001000/reg 0x34001000 36 0x34001080 100 0x34004000 16");
+
+ /* Hook timer interrupts up to interrupt controller */
+ sim_hw_parse (sd, "/mn103tim > timer-0-underflow timer-0-underflow /mn103int");
+ sim_hw_parse (sd, "/mn103tim > timer-1-underflow timer-1-underflow /mn103int");
+ sim_hw_parse (sd, "/mn103tim > timer-2-underflow timer-2-underflow /mn103int");
+ sim_hw_parse (sd, "/mn103tim > timer-3-underflow timer-3-underflow /mn103int");
+ sim_hw_parse (sd, "/mn103tim > timer-4-underflow timer-4-underflow /mn103int");
+ sim_hw_parse (sd, "/mn103tim > timer-5-underflow timer-5-underflow /mn103int");
+ sim_hw_parse (sd, "/mn103tim > timer-6-underflow timer-6-underflow /mn103int");
+ sim_hw_parse (sd, "/mn103tim > timer-6-compare-a timer-6-compare-a /mn103int");
+ sim_hw_parse (sd, "/mn103tim > timer-6-compare-b timer-6-compare-b /mn103int");
+
+
+ /* Serial devices 0,1,2 */
+ sim_hw_parse (sd, "/mn103ser@0x34000800/reg 0x34000800 48");
+ sim_hw_parse (sd, "/mn103ser@0x34000800/poll? true");
+
+ /* Hook serial interrupts up to interrupt controller */
+ sim_hw_parse (sd, "/mn103ser > serial-0-receive serial-0-receive /mn103int");
+ sim_hw_parse (sd, "/mn103ser > serial-0-transmit serial-0-transmit /mn103int");
+ sim_hw_parse (sd, "/mn103ser > serial-1-receive serial-1-receive /mn103int");
+ sim_hw_parse (sd, "/mn103ser > serial-1-transmit serial-1-transmit /mn103int");
+ sim_hw_parse (sd, "/mn103ser > serial-2-receive serial-2-receive /mn103int");
+ sim_hw_parse (sd, "/mn103ser > serial-2-transmit serial-2-transmit /mn103int");
+
+ sim_hw_parse (sd, "/mn103iop@0x36008000/reg 0x36008000 8 0x36008020 8 0x36008040 0xc 0x36008060 8 0x36008080 8");
+
+ /* Memory control registers */
+ sim_do_command (sd, "memory region 0x32000020,0x30");
+ /* Cache control register */
+ sim_do_command (sd, "memory region 0x20000070,0x4");
+ /* Cache purge regions */
+ sim_do_command (sd, "memory region 0x28400000,0x800");
+ sim_do_command (sd, "memory region 0x28401000,0x800");
+ /* DMA registers */
+ sim_do_command (sd, "memory region 0x32000100,0xF");
+ sim_do_command (sd, "memory region 0x32000200,0xF");
+ sim_do_command (sd, "memory region 0x32000400,0xF");
+ sim_do_command (sd, "memory region 0x32000800,0xF");
+ }
+ else
+ {
+ if (board != NULL)
+ {
+ sim_io_eprintf (sd, "Error: Board `%s' unknown.\n", board);
+ 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;
+ }
+
+
+ /* set machine specific configuration */
+/* STATE_CPU (sd, 0)->psw_mask = (PSW_NP | PSW_EP | PSW_ID | PSW_SAT */
+/* | PSW_CY | PSW_OV | PSW_S | PSW_Z); */
+
+ return sd;
+}
+
+
+void
+sim_close (sd, quitting)
+ SIM_DESC sd;
+ int quitting;
+{
+ sim_module_uninstall (sd);
+}
+
+
+SIM_RC
+sim_create_inferior (sd, prog_bfd, argv, env)
+ SIM_DESC sd;
+ struct bfd *prog_bfd;
+ char **argv;
+ char **env;
+{
+ memset (&State, 0, sizeof (State));
+ if (prog_bfd != NULL) {
+ PC = bfd_get_start_address (prog_bfd);
+ } else {
+ PC = 0;
+ }
+ CIA_SET (STATE_CPU (sd, 0), (unsigned64) PC);
+
+ return SIM_RC_OK;
+}
+
+void
+sim_do_command (sd, cmd)
+ SIM_DESC sd;
+ char *cmd;
+{
+ char *mm_cmd = "memory-map";
+ char *int_cmd = "interrupt";
+
+ if (sim_args_command (sd, cmd) != SIM_RC_OK)
+ {
+ if (strncmp (cmd, mm_cmd, strlen (mm_cmd) == 0))
+ sim_io_eprintf (sd, "`memory-map' command replaced by `sim memory'\n");
+ else if (strncmp (cmd, int_cmd, strlen (int_cmd)) == 0)
+ sim_io_eprintf (sd, "`interrupt' command replaced by `sim watch'\n");
+ else
+ sim_io_eprintf (sd, "Unknown command `%s'\n", cmd);
+ }
+}
+#endif /* WITH_COMMON */
+
+/* FIXME These would more efficient to use than load_mem/store_mem,
+ but need to be changed to use the memory map. */
+
+uint8
+get_byte (x)
+ uint8 *x;
+{
+ return *x;
+}
+
+uint16
+get_half (x)
+ uint8 *x;
+{
+ uint8 *a = x;
+ return (a[1] << 8) + (a[0]);
+}
+
+uint32
+get_word (x)
+ uint8 *x;
+{
+ uint8 *a = x;
+ return (a[3]<<24) + (a[2]<<16) + (a[1]<<8) + (a[0]);
+}
+
+void
+put_byte (addr, data)
+ uint8 *addr;
+ uint8 data;
+{
+ uint8 *a = addr;
+ a[0] = data;
+}
+
+void
+put_half (addr, data)
+ uint8 *addr;
+ uint16 data;
+{
+ uint8 *a = addr;
+ a[0] = data & 0xff;
+ a[1] = (data >> 8) & 0xff;
+}
+
+void
+put_word (addr, data)
+ uint8 *addr;
+ uint32 data;
+{
+ uint8 *a = addr;
+ a[0] = data & 0xff;
+ a[1] = (data >> 8) & 0xff;
+ a[2] = (data >> 16) & 0xff;
+ a[3] = (data >> 24) & 0xff;
+}
+
+int
+sim_fetch_register (sd, rn, memory, length)
+ SIM_DESC sd;
+ int rn;
+ unsigned char *memory;
+ int length;
+{
+ put_word (memory, State.regs[rn]);
+ return -1;
+}
+
+int
+sim_store_register (sd, rn, memory, length)
+ SIM_DESC sd;
+ int rn;
+ unsigned char *memory;
+ int length;
+{
+ State.regs[rn] = get_word (memory);
+ return -1;
+}
+
+
+void
+mn10300_core_signal (SIM_DESC sd,
+ sim_cpu *cpu,
+ sim_cia cia,
+ unsigned map,
+ int nr_bytes,
+ address_word addr,
+ transfer_type transfer,
+ sim_core_signals sig)
+{
+ const char *copy = (transfer == read_transfer ? "read" : "write");
+ address_word ip = CIA_ADDR (cia);
+
+ switch (sig)
+ {
+ case sim_core_unmapped_signal:
+ sim_io_eprintf (sd, "mn10300-core: %d byte %s to unmapped address 0x%lx at 0x%lx\n",
+ nr_bytes, copy,
+ (unsigned long) addr, (unsigned long) ip);
+ program_interrupt(sd, cpu, cia, SIM_SIGSEGV);
+ break;
+
+ case sim_core_unaligned_signal:
+ sim_io_eprintf (sd, "mn10300-core: %d byte %s to unaligned address 0x%lx at 0x%lx\n",
+ nr_bytes, copy,
+ (unsigned long) addr, (unsigned long) ip);
+ program_interrupt(sd, cpu, cia, SIM_SIGBUS);
+ break;
+
+ default:
+ sim_engine_abort (sd, cpu, cia,
+ "mn10300_core_signal - internal error - bad switch");
+ }
+}
+
+
+void
+program_interrupt (SIM_DESC sd,
+ sim_cpu *cpu,
+ sim_cia cia,
+ SIM_SIGNAL sig)
+{
+ int status;
+ struct hw *device;
+ static int in_interrupt = 0;
+
+#ifdef SIM_CPU_EXCEPTION_TRIGGER
+ SIM_CPU_EXCEPTION_TRIGGER(sd,cpu,cia);
+#endif
+
+ /* avoid infinite recursion */
+ if (in_interrupt)
+ {
+ (*mn10300_callback->printf_filtered) (mn10300_callback,
+ "ERROR: recursion in program_interrupt during software exception dispatch.");
+ }
+ else
+ {
+ in_interrupt = 1;
+ /* copy NMI handler code from dv-mn103cpu.c */
+ store_word (SP - 4, CIA_GET (cpu));
+ store_half (SP - 8, PSW);
+
+ /* Set the SYSEF flag in NMICR by backdoor method. See
+ dv-mn103int.c:write_icr(). This is necessary because
+ software exceptions are not modelled by actually talking to
+ the interrupt controller, so it cannot set its own SYSEF
+ flag. */
+ if ((NULL != board) && (strcmp(board, BOARD_AM32) == 0))
+ store_byte (0x34000103, 0x04);
+ }
+
+ PSW &= ~PSW_IE;
+ SP = SP - 8;
+ CIA_SET (cpu, 0x40000008);
+
+ in_interrupt = 0;
+ sim_engine_halt(sd, cpu, NULL, cia, sim_stopped, sig);
+}
+
+
+void
+mn10300_cpu_exception_trigger(SIM_DESC sd, sim_cpu* cpu, address_word cia)
+{
+ ASSERT(cpu != NULL);
+
+ if(State.exc_suspended > 0)
+ sim_io_eprintf(sd, "Warning, nested exception triggered (%d)\n", State.exc_suspended);
+
+ CIA_SET (cpu, cia);
+ memcpy(State.exc_trigger_regs, State.regs, sizeof(State.exc_trigger_regs));
+ State.exc_suspended = 0;
+}
+
+void
+mn10300_cpu_exception_suspend(SIM_DESC sd, sim_cpu* cpu, int exception)
+{
+ ASSERT(cpu != NULL);
+
+ if(State.exc_suspended > 0)
+ sim_io_eprintf(sd, "Warning, nested exception signal (%d then %d)\n",
+ State.exc_suspended, exception);
+
+ memcpy(State.exc_suspend_regs, State.regs, sizeof(State.exc_suspend_regs));
+ memcpy(State.regs, State.exc_trigger_regs, sizeof(State.regs));
+ CIA_SET (cpu, PC); /* copy PC back from new State.regs */
+ State.exc_suspended = exception;
+}
+
+void
+mn10300_cpu_exception_resume(SIM_DESC sd, sim_cpu* cpu, int exception)
+{
+ ASSERT(cpu != NULL);
+
+ if(exception == 0 && State.exc_suspended > 0)
+ {
+ if(State.exc_suspended != SIGTRAP) /* warn not for breakpoints */
+ sim_io_eprintf(sd, "Warning, resuming but ignoring pending exception signal (%d)\n",
+ State.exc_suspended);
+ }
+ else if(exception != 0 && State.exc_suspended > 0)
+ {
+ if(exception != State.exc_suspended)
+ sim_io_eprintf(sd, "Warning, resuming with mismatched exception signal (%d vs %d)\n",
+ State.exc_suspended, exception);
+
+ memcpy(State.regs, State.exc_suspend_regs, sizeof(State.regs));
+ CIA_SET (cpu, PC); /* copy PC back from new State.regs */
+ }
+ else if(exception != 0 && State.exc_suspended == 0)
+ {
+ sim_io_eprintf(sd, "Warning, ignoring spontanous exception signal (%d)\n", exception);
+ }
+ State.exc_suspended = 0;
+}
projects / thirdparty / binutils-gdb.git / blobdiff