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-rw-r--r--sim/mn10200/interp.c820
1 files changed, 0 insertions, 820 deletions
diff --git a/sim/mn10200/interp.c b/sim/mn10200/interp.c
deleted file mode 100644
index 90529c8..0000000
--- a/sim/mn10200/interp.c
+++ /dev/null
@@ -1,820 +0,0 @@
-#include <signal.h>
-#include "sysdep.h"
-#include "bfd.h"
-
-#include "mn10200_sim.h"
-
-#ifdef NEED_UI_LOOP_HOOK
-/* How often to run the ui_loop update, when in use */
-#define UI_LOOP_POLL_INTERVAL 0x60000
-
-/* Counter for the ui_loop_hook update */
-static long ui_loop_hook_counter = UI_LOOP_POLL_INTERVAL;
-
-/* Actual hook to call to run through gdb's gui event loop */
-extern int (*deprecated_ui_loop_hook) (int);
-#endif /* NEED_UI_LOOP_HOOK */
-
-host_callback *mn10200_callback;
-int mn10200_debug;
-static SIM_OPEN_KIND sim_kind;
-static char *myname;
-
-static void dispatch PARAMS ((uint32, uint32, int));
-static long hash PARAMS ((long));
-static void init_system PARAMS ((void));
-#define MAX_HASH 127
-
-struct hash_entry
-{
- struct hash_entry *next;
- long opcode;
- long mask;
- struct simops *ops;
-#ifdef HASH_STAT
- unsigned long count;
-#endif
-};
-
-int max_mem = 0;
-struct hash_entry hash_table[MAX_HASH+1];
-
-
-/* This probably doesn't do a very good job at bucket filling, but
- it's simple... */
-static INLINE long
-hash(insn)
- long insn;
-{
- /* These are one byte insns. */
- if ((insn & 0xffffff00) == 0x00)
- {
- if ((insn & 0xf0) != 0x80)
- return ((insn & 0xf0) >> 4) & 0x7f;
-
- if ((insn & 0xf0) == 0x80
- && (insn & 0x0c) >> 2 != (insn & 0x03))
- return (insn & 0xf0) & 0x7f;
-
- return (insn & 0xff) & 0x7f;
- }
-
- if ((insn & 0xffff0000) == 0)
- {
- if ((insn & 0xf000) == 0xd000)
- return ((insn & 0xfc00) >> 10) & 0x7f;
-
- if ((insn & 0xf000) == 0xe000)
- return ((insn & 0xff00) >> 8) & 0x7f;
-
- if ((insn & 0xf200) == 0xf200)
- return ((insn & 0xfff0) >> 4) & 0x7f;
-
- if ((insn & 0xc000) == 0x4000
- || (insn & 0xf000) == 0x8000)
- return ((insn & 0xf000) >> 8) & 0x7f;
-
- if ((insn & 0xf200) == 0xf000)
- return ((insn & 0xffc0) >> 8) & 0x7f;
-
- return ((insn & 0xff00) >> 8) & 0x7f;
- }
-
- if ((insn & 0xff000000) == 0)
- {
-
- if ((insn & 0xf00000) != 0xf00000
- || (insn & 0xfc0000) == 0xf80000)
- return ((insn & 0xfc0000) >> 16) & 0x7f;
-
- if ((insn & 0xff0000) == 0xf50000)
- return ((insn & 0xfff000) >> 12) & 0x7f;
- return ((insn & 0xff0000) >> 16) & 0x7f;
- }
-
- return ((insn & 0xfff0000) >> 20) & 0x7f;
-}
-
-static INLINE void
-dispatch (insn, extension, length)
- uint32 insn;
- uint32 extension;
- int length;
-{
- struct hash_entry *h;
-
- h = &hash_table[hash(insn)];
-
- while ((insn & h->mask) != h->opcode
- || (length != h->ops->length))
- {
- if (!h->next)
- {
- (*mn10200_callback->printf_filtered) (mn10200_callback,
- "ERROR looking up hash for 0x%x, PC=0x%x\n", insn, PC);
- exit(1);
- }
- h = h->next;
- }
-
-
-#ifdef HASH_STAT
- h->count++;
-#endif
-
- /* Now call the right function. */
- (h->ops->func)(insn, extension);
- PC += length;
-}
-
-/* FIXME These would more efficient to use than load_mem/store_mem,
- but need to be changed to use the memory map. */
-
-uint32
-get_word (x)
- uint8 *x;
-{
- uint8 *a = x;
- return (a[3]<<24) + (a[2]<<16) + (a[1]<<8) + (a[0]);
-}
-
-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;
-}
-
-void
-sim_size (power)
- int power;
-
-{
- if (State.mem)
- free (State.mem);
-
- max_mem = 1 << power;
- State.mem = (uint8 *) calloc (1, 1 << power);
- if (!State.mem)
- {
- (*mn10200_callback->printf_filtered) (mn10200_callback, "Allocation of main memory failed.\n");
- exit (1);
- }
-}
-
-static void
-init_system ()
-{
- if (!State.mem)
- sim_size(19);
-}
-
-int
-sim_write (sd,addr, buffer, size)
- SIM_DESC sd;
- SIM_ADDR addr;
- unsigned char *buffer;
- int size;
-{
- int i;
-
- init_system ();
-
- for (i = 0; i < size; i++)
- store_byte (addr + i, buffer[i]);
-
- return size;
-}
-
-/* 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;
- char **p;
- int i;
-
- mn10200_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 (*p, "-t") == 0)
- mn10200_debug = DEBUG;
- else
-#endif
- (*mn10200_callback->printf_filtered) (mn10200_callback, "ERROR: unsupported option(s): %s\n",*p);
- }
-
- /* 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)
- {
- /* 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->next = calloc(1,sizeof(struct hash_entry));
- h = h->next;
- }
- h->ops = s;
- h->mask = s->mask;
- h->opcode = s->opcode;
-#ifdef HASH_STAT
- h->count = 0;
-#endif
- }
-
- /* fudge our descriptor for now */
- return (SIM_DESC) 1;
-}
-
-
-void
-sim_set_profile (n)
- int n;
-{
- (*mn10200_callback->printf_filtered) (mn10200_callback, "sim_set_profile %d\n", n);
-}
-
-void
-sim_set_profile_size (n)
- int n;
-{
- (*mn10200_callback->printf_filtered) (mn10200_callback, "sim_set_profile_size %d\n", n);
-}
-
-int
-sim_stop (sd)
- SIM_DESC sd;
-{
- State.exception = SIGINT;
- return 1;
-}
-
-void
-sim_resume (sd, step, siggnal)
- SIM_DESC sd;
- int step, siggnal;
-{
- uint32 inst;
-
- if (step)
- State.exception = SIGTRAP;
- else
- State.exception = 0;
-
- State.exited = 0;
-
- do
- {
- unsigned long insn, extension;
-
-#ifdef NEED_UI_LOOP_HOOK
- if (deprecated_ui_loop_hook != NULL && ui_loop_hook_counter-- < 0)
- {
- ui_loop_hook_counter = UI_LOOP_POLL_INTERVAL;
- deprecated_ui_loop_hook (0);
- }
-#endif /* NEED_UI_LOOP_HOOK */
-
- /* Fetch the current instruction, fetch a double word to
- avoid redundant fetching for the common cases below. */
- inst = load_mem_big (PC, 2);
-
- /* 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. */
- switch ((inst >> 8) & 0xff)
- {
- /* All the single byte insns except 0x80, which must
- be handled specially. */
- case 0x00:
- case 0x01:
- case 0x02:
- case 0x03:
- case 0x04:
- case 0x05:
- case 0x06:
- case 0x07:
- case 0x08:
- case 0x09:
- case 0x0a:
- case 0x0b:
- case 0x0c:
- case 0x0d:
- case 0x0e:
- case 0x0f:
- 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 0x20:
- case 0x21:
- case 0x22:
- case 0x23:
- case 0x24:
- case 0x25:
- case 0x26:
- case 0x27:
- case 0x28:
- case 0x29:
- case 0x2a:
- case 0x2b:
- 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 0x3c:
- case 0x3d:
- case 0x3e:
- case 0x3f:
- case 0x90:
- case 0x91:
- case 0x92:
- case 0x93:
- case 0x94:
- case 0x95:
- case 0x96:
- case 0x97:
- case 0x98:
- case 0x99:
- case 0x9a:
- case 0x9b:
- case 0x9c:
- case 0x9d:
- case 0x9e:
- case 0x9f:
- case 0xa0:
- case 0xa1:
- case 0xa2:
- case 0xa3:
- case 0xa4:
- case 0xa5:
- case 0xa6:
- case 0xa7:
- case 0xa8:
- case 0xa9:
- case 0xaa:
- case 0xab:
- case 0xac:
- case 0xad:
- case 0xae:
- case 0xaf:
- case 0xb0:
- case 0xb1:
- case 0xb2:
- case 0xb3:
- case 0xb4:
- case 0xb5:
- case 0xb6:
- case 0xb7:
- case 0xb8:
- case 0xb9:
- case 0xba:
- case 0xbb:
- case 0xbc:
- case 0xbd:
- case 0xbe:
- case 0xbf:
- case 0xeb:
- case 0xf6:
- case 0xfe:
- case 0xff:
- insn = (inst >> 8) & 0xff;
- extension = 0;
- dispatch (insn, extension, 1);
- break;
-
- /* Special case as mov dX,dX really means mov imm8,dX. */
- case 0x80:
- case 0x85:
- case 0x8a:
- case 0x8f:
- /* Fetch the full instruction. */
- 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:
- insn = (inst >> 8) & 0xff;
- extension = 0;
- dispatch (insn, extension, 1);
- break;
-
- /* And the two byte insns. */
- case 0x40:
- case 0x41:
- case 0x42:
- case 0x43:
- case 0x44:
- case 0x45:
- case 0x46:
- case 0x47:
- case 0x48:
- case 0x49:
- case 0x4a:
- case 0x4b:
- case 0x4c:
- case 0x4d:
- case 0x4e:
- case 0x4f:
- case 0x50:
- case 0x51:
- case 0x52:
- case 0x53:
- case 0x54:
- case 0x55:
- case 0x56:
- case 0x57:
- case 0x58:
- case 0x59:
- case 0x5a:
- case 0x5b:
- case 0x5c:
- case 0x5d:
- case 0x5e:
- case 0x5f:
- 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 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 0xf0:
- case 0xf1:
- case 0xf2:
- case 0xf3:
- /* Fetch the full instruction. */
- insn = inst;
- extension = 0;
- dispatch (insn, extension, 2);
- break;
-
- /* And the 3 byte insns with a 16bit operand in little
- endian format. */
- case 0xc0:
- case 0xc1:
- case 0xc2:
- case 0xc3:
- case 0xc4:
- case 0xc5:
- case 0xc6:
- case 0xc7:
- case 0xc8:
- case 0xc9:
- case 0xca:
- case 0xcb:
- case 0xcc:
- case 0xcd:
- case 0xce:
- case 0xcf:
- case 0xdc:
- case 0xdd:
- case 0xde:
- case 0xdf:
- case 0xec:
- case 0xed:
- case 0xee:
- case 0xef:
- case 0xf8:
- case 0xf9:
- case 0xfa:
- case 0xfb:
- case 0xfc:
- case 0xfd:
- insn = load_byte (PC);
- insn <<= 16;
- insn |= load_half (PC + 1);
- extension = 0;
- dispatch (insn, extension, 3);
- break;
-
- /* 3 byte insns without 16bit operand. */
- case 0xf5:
- insn = load_mem_big (PC, 3);
- extension = 0;
- dispatch (insn, extension, 3);
- break;
-
- /* 4 byte insns. */
- case 0xf7:
- insn = inst;
- insn <<= 16;
- insn |= load_half (PC + 2);
- extension = 0;
- dispatch (insn, extension, 4);
- break;
-
- case 0xf4:
- insn = inst;
- insn <<= 16;
- insn |= load_mem_big (PC + 4, 1) << 8;
- insn |= load_mem_big (PC + 3, 1);
- extension = load_mem_big (PC + 2, 1);
- dispatch (insn, extension, 5);
- 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
-
-}
-
-
-void
-sim_close (sd, quitting)
- SIM_DESC sd;
- int quitting;
-{
- /* nothing to do */
-}
-
-int
-sim_trace (sd)
- SIM_DESC sd;
-{
-#ifdef DEBUG
- mn10200_debug = DEBUG;
-#endif
- sim_resume (sd, 0, 0);
- return 1;
-}
-
-void
-sim_info (sd, verbose)
- SIM_DESC sd;
- int verbose;
-{
- (*mn10200_callback->printf_filtered) (mn10200_callback, "sim_info\n");
-}
-
-SIM_RC
-sim_create_inferior (sd, abfd, argv, env)
- SIM_DESC sd;
- struct bfd *abfd;
- char **argv;
- char **env;
-{
- if (abfd != NULL)
- PC = bfd_get_start_address (abfd);
- else
- PC = 0;
- return SIM_RC_OK;
-}
-
-void
-sim_set_callbacks (p)
- host_callback *p;
-{
- mn10200_callback = p;
-}
-
-/* All the code for exiting, signals, etc needs to be revamped.
-
- This is enough to get c-torture limping though. */
-
-void
-sim_stop_reason (sd, reason, sigrc)
- SIM_DESC sd;
- enum sim_stop *reason;
- int *sigrc;
-{
- if (State.exited)
- *reason = sim_exited;
- else
- *reason = sim_stopped;
- if (State.exception == SIGQUIT)
- *sigrc = 0;
- else
- *sigrc = State.exception;
-}
-
-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;
-}
-
-int
-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_byte (addr + i);
-
- return size;
-}
-
-void
-sim_do_command (sd, cmd)
- SIM_DESC sd;
- char *cmd;
-{
- (*mn10200_callback->printf_filtered) (mn10200_callback, "\"%s\" is not a valid mn10200 simulator command.\n", cmd);
-}
-
-SIM_RC
-sim_load (sd, prog, abfd, from_tty)
- SIM_DESC sd;
- char *prog;
- bfd *abfd;
- int from_tty;
-{
- extern bfd *sim_load_file (); /* ??? Don't know where this should live. */
- bfd *prog_bfd;
-
- prog_bfd = sim_load_file (sd, myname, mn10200_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;
-}
generated by cgit v1.1 at 2024-11-22 21:41:47 +0000