-#include <signal.h>
+/* This must come before any other includes. */
+#include "defs.h"
+
#include "sim-main.h"
#include "sim-options.h"
#include "v850_sim.h"
+#include "sim-assert.h"
+#include "itable.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__
-#define INLINE inline
-#else
-#define INLINE
-#endif
-#endif
-
+static const char * get_insn_name (sim_cpu *, int);
-/* For compatibility */
+/* For compatibility. */
SIM_DESC simulator;
-
-
-/* v850 interrupt model */
+/* V850 interrupt model. */
enum interrupt_type
{
num_int_types
};
-char *interrupt_names[] = {
+const char *interrupt_names[] =
+{
"reset",
"nmi",
"intov1",
};
static void
-do_interrupt (sd, data)
- SIM_DESC sd;
- void *data;
+do_interrupt (SIM_DESC sd, void *data)
{
- enum interrupt_type inttype = *(int*)data;
- /* Disable further interrupts. */
- PSW |= PSW_ID;
- /* Indicate that we're doing interrupt not exception processing. */
- PSW &= ~PSW_EP;
+ const char **interrupt_name = (const char**)data;
+ enum interrupt_type inttype;
+ inttype = (interrupt_name - STATE_WATCHPOINTS (sd)->interrupt_names);
+
+ /* For a hardware reset, drop everything and jump to the start
+ address */
if (inttype == int_reset)
{
PC = 0;
PSW = 0x20;
ECR = 0;
- /* (Might be useful to init other regs with random values.) */
+ sim_engine_restart (sd, NULL, NULL, NULL_CIA);
}
- else if (inttype == int_nmi)
+
+ /* Deliver an NMI when allowed */
+ if (inttype == int_nmi)
{
if (PSW & PSW_NP)
{
/* We're already working on an NMI, so this one must wait
around until the previous one is done. The processor
- ignores subsequent NMIs, so we don't need to count them. */
- State.pending_nmi = 1;
+ ignores subsequent NMIs, so we don't need to count them.
+ Just keep re-scheduling a single NMI until it manages to
+ be delivered */
+ if (STATE_CPU (sd, 0)->pending_nmi != NULL)
+ sim_events_deschedule (sd, STATE_CPU (sd, 0)->pending_nmi);
+ STATE_CPU (sd, 0)->pending_nmi =
+ sim_events_schedule (sd, 1, do_interrupt, data);
+ return;
}
else
{
+ /* NMI can be delivered. Do not deschedule pending_nmi as
+ that, if still in the event queue, is a second NMI that
+ needs to be delivered later. */
FEPC = PC;
FEPSW = PSW;
/* Set the FECC part of the ECR. */
ECR &= 0x0000ffff;
ECR |= 0x10;
PSW |= PSW_NP;
+ PSW &= ~PSW_EP;
+ PSW |= PSW_ID;
PC = 0x10;
+ sim_engine_restart (sd, NULL, NULL, NULL_CIA);
}
}
- else
+
+ /* deliver maskable interrupt when allowed */
+ if (inttype > int_nmi && inttype < num_int_types)
{
- EIPC = PC;
- EIPSW = PSW;
- /* Clear the EICC part of the ECR, will set below. */
- ECR &= 0xffff0000;
- switch (inttype)
+ if ((PSW & PSW_NP) || (PSW & PSW_ID))
{
- case int_intov1:
- PC = 0x80;
- ECR |= 0x80;
- break;
- case int_intp10:
- PC = 0x90;
- ECR |= 0x90;
- break;
- case int_intp11:
- PC = 0xa0;
- ECR |= 0xa0;
- break;
- case int_intp12:
- PC = 0xb0;
- ECR |= 0xb0;
- break;
- case int_intp13:
- PC = 0xc0;
- ECR |= 0xc0;
- break;
- case int_intcm4:
- PC = 0xd0;
- ECR |= 0xd0;
- break;
- default:
- /* Should never be possible. */
- abort ();
- break;
+ /* Can't deliver this interrupt, reschedule it for later */
+ sim_events_schedule (sd, 1, do_interrupt, data);
+ return;
}
+ else
+ {
+ /* save context */
+ EIPC = PC;
+ EIPSW = PSW;
+ /* Disable further interrupts. */
+ PSW |= PSW_ID;
+ /* Indicate that we're doing interrupt not exception processing. */
+ PSW &= ~PSW_EP;
+ /* Clear the EICC part of the ECR, will set below. */
+ ECR &= 0xffff0000;
+ switch (inttype)
+ {
+ case int_intov1:
+ PC = 0x80;
+ ECR |= 0x80;
+ break;
+ case int_intp10:
+ PC = 0x90;
+ ECR |= 0x90;
+ break;
+ case int_intp11:
+ PC = 0xa0;
+ ECR |= 0xa0;
+ break;
+ case int_intp12:
+ PC = 0xb0;
+ ECR |= 0xb0;
+ break;
+ case int_intp13:
+ PC = 0xc0;
+ ECR |= 0xc0;
+ break;
+ case int_intcm4:
+ PC = 0xd0;
+ ECR |= 0xd0;
+ break;
+ default:
+ /* Should never be possible. */
+ sim_engine_abort (sd, NULL, NULL_CIA,
+ "do_interrupt - internal error - bad switch");
+ break;
+ }
+ }
+ sim_engine_restart (sd, NULL, NULL, NULL_CIA);
}
+
+ /* some other interrupt? */
+ sim_engine_abort (sd, NULL, NULL_CIA,
+ "do_interrupt - internal error - interrupt %d unknown",
+ inttype);
}
-/* These default values correspond to expected usage for the chip. */
-
-int v850_debug;
+/* Return name of an insn, used by insn profiling. */
-uint32 OP[4];
-
-static long hash PARAMS ((long));
-#if 0
-static void do_format_1_2 PARAMS ((uint32));
-static void do_format_3 PARAMS ((uint32));
-static void do_format_4 PARAMS ((uint32));
-static void do_format_5 PARAMS ((uint32));
-static void do_format_6 PARAMS ((uint32));
-static void do_format_7 PARAMS ((uint32));
-static void do_format_8 PARAMS ((uint32));
-static void do_format_9_10 PARAMS ((uint32));
-#endif
-
-#define MAX_HASH 63
-
-struct hash_entry
+static const char *
+get_insn_name (sim_cpu *cpu, int i)
{
- struct hash_entry *next;
- unsigned long opcode;
- unsigned long mask;
- struct simops *ops;
-};
+ return itable[i].name;
+}
-struct hash_entry hash_table[MAX_HASH+1];
+/* These default values correspond to expected usage for the chip. */
+uint32 OP[4];
-static INLINE long
-hash(insn)
- long insn;
+static sim_cia
+v850_pc_get (sim_cpu *cpu)
{
- if ( (insn & 0x0600) == 0
- || (insn & 0x0700) == 0x0200
- || (insn & 0x0700) == 0x0600
- || (insn & 0x0780) == 0x0700)
- return (insn & 0x07e0) >> 5;
-
- if ((insn & 0x0700) == 0x0300
- || (insn & 0x0700) == 0x0400
- || (insn & 0x0700) == 0x0500)
- return (insn & 0x0780) >> 7;
-
- if ((insn & 0x07c0) == 0x0780)
- return (insn & 0x07c0) >> 6;
-
- return (insn & 0x07e0) >> 5;
+ return PC;
}
-#if 0
-static struct hash_entry *
-lookup_hash (sd, ins)
- SIM_DESC sd;
- uint32 ins;
+static void
+v850_pc_set (sim_cpu *cpu, sim_cia pc)
{
- struct hash_entry *h;
-
- h = &hash_table[hash(ins)];
-
- while ((ins & h->mask) != h->opcode)
- {
- if (h->next == NULL)
- {
- sim_io_error (sd, "ERROR looking up hash for 0x%lx, PC=0x%lx",
- (long) ins, (long) PC);
- }
- h = h->next;
- }
- return (h);
+ PC = pc;
}
-#endif
+
+static int v850_reg_fetch (SIM_CPU *, int, unsigned char *, int);
+static int v850_reg_store (SIM_CPU *, int, unsigned char *, int);
SIM_DESC
-sim_open (kind, cb, abfd, argv)
- SIM_OPEN_KIND kind;
- host_callback *cb;
- struct _bfd *abfd;
- char **argv;
+sim_open (SIM_OPEN_KIND kind,
+ host_callback * cb,
+ struct bfd * abfd,
+ char * const * argv)
{
- char *buf;
+ int i;
SIM_DESC sd = sim_state_alloc (kind, cb);
-#if 0
- struct simops *s;
- struct hash_entry *h;
-#endif
+ int mach;
+
+ SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
+
+ /* Set default options before parsing user options. */
+ current_target_byte_order = BFD_ENDIAN_LITTLE;
+
+ /* The cpu data is kept in a separately allocated chunk of memory. */
+ if (sim_cpu_alloc_all (sd, 1) != SIM_RC_OK)
+ return 0;
/* for compatibility */
simulator = sd;
/* FIXME: should be better way of setting up interrupts */
- STATE_WATCHPOINTS (sd)->pc = &(PC);
- STATE_WATCHPOINTS (sd)->sizeof_pc = sizeof (PC);
STATE_WATCHPOINTS (sd)->interrupt_handler = do_interrupt;
STATE_WATCHPOINTS (sd)->interrupt_names = interrupt_names;
+ /* Initialize the mechanism for doing insn profiling. */
+ CPU_INSN_NAME (STATE_CPU (sd, 0)) = get_insn_name;
+ CPU_MAX_INSNS (STATE_CPU (sd, 0)) = nr_itable_entries;
+
if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
return 0;
/* Allocate core managed memory */
+
/* "Mirror" the ROM addresses below 1MB. */
- asprintf (&buf, "memory region 0,0x100000,0x%lx", V850_ROM_SIZE);
- sim_do_command (sd, buf);
- free (buf);
+ sim_do_commandf (sd, "memory region 0,0x100000,0x%x", V850_ROM_SIZE);
/* Chunk of ram adjacent to rom */
- asprintf (&buf, "memory region 0x100000,0x%lx", V850_LOW_END - 0x100000);
- sim_do_command (sd, buf);
- free (buf);
+ sim_do_commandf (sd, "memory region 0x100000,0x%x", V850_LOW_END-0x100000);
/* peripheral I/O region - mirror 1K across 4k (0x1000) */
sim_do_command (sd, "memory region 0xfff000,0x1000,1024");
/* similarly if in the internal RAM region */
sim_do_command (sd, "memory region 0xffe000,0x1000,1024");
- /* 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. */
+ /* The parser will print an error message for us, so we silently return. */
if (sim_parse_args (sd, argv) != SIM_RC_OK)
{
/* Uninstall the modules to avoid memory leaks,
return 0;
}
-#if 0
- /* 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;
- if (h->ops)
- {
- h->next = (struct hash_entry *) calloc(1,sizeof(struct hash_entry));
- h = h->next;
- }
- h->ops = s;
- h->mask = s->mask;
- h->opcode = s->opcode;
- }
-#endif
-
- return sd;
-}
-
-
-void
-sim_close (sd, quitting)
- SIM_DESC sd;
- int quitting;
-{
- sim_module_uninstall (sd);
-}
-
-int
-sim_stop (sd)
- SIM_DESC sd;
-{
- return 0;
-}
-
-#if 0
-void
-sim_engine_run (sd, next_cpu_nr, siggnal)
- SIM_DESC sd;
- int next_cpu_nr;
- int siggnal;
-{
- uint32 inst;
- SIM_ADDR oldpc;
+ /* determine the machine type */
+ if (STATE_ARCHITECTURE (sd) != NULL
+ && (STATE_ARCHITECTURE (sd)->arch == bfd_arch_v850
+ || STATE_ARCHITECTURE (sd)->arch == bfd_arch_v850_rh850))
+ mach = STATE_ARCHITECTURE (sd)->mach;
+ else
+ mach = bfd_mach_v850; /* default */
- while (1)
+ /* set machine specific configuration */
+ switch (mach)
{
- struct hash_entry * h;
- /* Fetch the current instruction. */
- inst = RLW (PC);
- oldpc = PC;
-
- h = lookup_hash (sd, inst);
- OP[0] = inst & 0x1f;
- OP[1] = (inst >> 11) & 0x1f;
- OP[2] = (inst >> 16) & 0xffff;
- OP[3] = inst;
-
- /* fprintf (stderr, "PC = %x, SP = %x\n", PC, SP ); */
+ case bfd_mach_v850:
+ case bfd_mach_v850e:
+ case bfd_mach_v850e1:
+ case bfd_mach_v850e2:
+ case bfd_mach_v850e2v3:
+ case bfd_mach_v850e3v5:
+ STATE_CPU (sd, 0)->psw_mask = (PSW_NP | PSW_EP | PSW_ID | PSW_SAT
+ | PSW_CY | PSW_OV | PSW_S | PSW_Z);
+ break;
+ }
- if (inst == 0)
- {
- fprintf (stderr, "NOP encountered!\n");
- break;
- }
-
- PC += h->ops->func ();
+ /* CPU specific initialization. */
+ for (i = 0; i < MAX_NR_PROCESSORS; ++i)
+ {
+ SIM_CPU *cpu = STATE_CPU (sd, i);
- if (oldpc == PC)
- {
- sim_io_eprintf (sd, "simulator loop at %lx\n", (long) PC );
- break;
- }
-
- if (sim_events_tick (sd))
- {
- sim_events_process (sd);
- }
+ CPU_REG_FETCH (cpu) = v850_reg_fetch;
+ CPU_REG_STORE (cpu) = v850_reg_store;
+ CPU_PC_FETCH (cpu) = v850_pc_get;
+ CPU_PC_STORE (cpu) = v850_pc_set;
}
-}
-#endif
-#if 0
-int
-sim_trace (sd)
- SIM_DESC sd;
-{
-#ifdef DEBUG
- v850_debug = DEBUG;
-#endif
- sim_resume (sd, 0, 0);
- return 1;
-}
-#endif
-
-void
-sim_info (sd, verbose)
- SIM_DESC sd;
- int verbose;
-{
- /* do nothing */
+ return sd;
}
SIM_RC
-sim_create_inferior (sd, prog_bfd, argv, env)
- SIM_DESC sd;
- struct _bfd *prog_bfd;
- char **argv;
- char **env;
+sim_create_inferior (SIM_DESC sd,
+ struct bfd * prog_bfd,
+ char * const *argv,
+ char * const *env)
{
memset (&State, 0, sizeof (State));
if (prog_bfd != NULL)
return SIM_RC_OK;
}
-void
-sim_fetch_register (sd, rn, memory)
- SIM_DESC sd;
- int rn;
- unsigned char *memory;
+static int
+v850_reg_fetch (SIM_CPU *cpu, int rn, unsigned char *memory, int length)
{
*(unsigned32*)memory = H2T_4 (State.regs[rn]);
-}
-
-void
-sim_store_register (sd, rn, memory)
- SIM_DESC sd;
- int rn;
- unsigned char *memory;
-{
- State.regs[rn] = T2H_4 (*(unsigned32*)memory);
+ return -1;
}
-void
-sim_do_command (sd, cmd)
- SIM_DESC sd;
- char *cmd;
+static int
+v850_reg_store (SIM_CPU *cpu, int rn, unsigned char *memory, int length)
{
- 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);
- }
+ State.regs[rn] = T2H_4 (*(unsigned32 *) memory);
+ return length;
}
projects / thirdparty / binutils-gdb.git / blobdiff