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-rw-r--r--sim/d10v/interp.c309
1 files changed, 173 insertions, 136 deletions
diff --git a/sim/d10v/interp.c b/sim/d10v/interp.c
index fc1bee8..008894b 100644
--- a/sim/d10v/interp.c
+++ b/sim/d10v/interp.c
@@ -36,7 +36,6 @@ static void do_long PARAMS ((uint32 ins));
static void do_2_short PARAMS ((uint16 ins1, uint16 ins2, enum _leftright leftright));
static void do_parallel PARAMS ((uint16 ins1, uint16 ins2));
static char *add_commas PARAMS ((char *buf, int sizeof_buf, unsigned long value));
-static void init_system PARAMS ((void));
extern void sim_set_profile PARAMS ((int n));
extern void sim_set_profile_size PARAMS ((int n));
@@ -114,7 +113,7 @@ bfd_vma
decode_pc ()
{
asection *s;
- if (!init_text_p)
+ if (!init_text_p && prog_bfd != NULL)
{
init_text_p = 1;
for (s = prog_bfd->sections; s; s = s->next)
@@ -315,10 +314,6 @@ sim_size (power)
exit(1);
}
- SET_IMAP0(0x1000);
- SET_IMAP1(0x1000);
- SET_DMAP(0);
-
#ifdef DEBUG
if ((d10v_debug & DEBUG_MEMSIZE) != 0)
{
@@ -333,13 +328,6 @@ sim_size (power)
#endif
}
-static void
-init_system ()
-{
- if (!State.imem)
- sim_size(1);
-}
-
/* Transfer data to/from simulated memory. Since a bug in either the
simulated program or in gdb or the simulator itself may cause a
bogus address to be passed in, we need to do some sanity checking
@@ -348,138 +336,159 @@ init_system ()
than aborting the entire run. */
static int
-xfer_mem (addr, buffer, size, write)
- SIM_ADDR addr;
- unsigned char *buffer;
- int size;
- int write;
+xfer_mem (SIM_ADDR addr,
+ unsigned char *buffer,
+ int size,
+ int write_p)
{
- if (!State.imem)
- init_system ();
+ unsigned char *memory;
+ int segment = ((addr >> 24) & 0xff);
+ addr = (addr & 0x00ffffff);
#ifdef DEBUG
if ((d10v_debug & DEBUG_INSTRUCTION) != 0)
{
- if (write)
+ if (write_p)
{
- (*d10v_callback->printf_filtered) (d10v_callback, "sim_write %d bytes to 0x%x\n", size, addr);
+ (*d10v_callback->printf_filtered) (d10v_callback, "sim_write %d bytes to 0x%02x:%06x\n", size, segment, addr);
}
else
{
- (*d10v_callback->printf_filtered) (d10v_callback, "sim_read %d bytes from 0x%x\n", size, addr);
+ (*d10v_callback->printf_filtered) (d10v_callback, "sim_read %d bytes from 0x%2x:%6x\n", size, segment, addr);
}
}
#endif
- /* to access data, we use the following mapping
- 0x00000000 - 0x00ffffff : 16 Mb of external unified memory in segments of 128 Kb each
- 0x01000000 - 0x0103ffff : 256 Kb of external instruction memory
- 0x02000000 - 0x0200ffff : 32 Kb of on chip data memory + 16 Kb DMAP memory + 16 Kb I/O space */
+ /* to access data, we use the following mapping
+ 0x00xxxxxx: Logical data address segment (DMAP translated memory)
+ 0x01xxxxxx: Logical instruction address segment (IMAP translated memory)
+ 0x10xxxxxx: Physical data memory segment (On-chip data memory)
+ 0x11xxxxxx: Physical instruction memory segment (On-chip insn memory)
+ 0x12xxxxxx: Phisical unified memory segment (Unified memory)
+ */
- if ((addr | 0x00ffffff) == 0x00ffffff)
+ switch (segment)
{
- /* UNIFIED MEMORY (0x00000000 - 0x00ffffff) */
- int startsegment, startoffset; /* Segment and offset within segment where xfer starts */
- int endsegment, endoffset; /* Segment and offset within segment where xfer ends */
+ case 0x00: /* DMAP translated memory */
+ {
+ int byte;
+ for (byte = 0; byte < size; byte++)
+ {
+ uint8 *mem = dmem_addr (addr + byte);
+ if (mem == NULL)
+ return byte;
+ else if (write_p)
+ *mem = buffer[byte];
+ else
+ buffer[byte] = *mem;
+ }
+ return byte;
+ }
- startsegment = addr >> UMEM_SIZE;
- startoffset = addr & ((1 << UMEM_SIZE) - 1);
- endsegment = (addr + size) >> UMEM_SIZE;
- endoffset = (addr + size) & ((1 << UMEM_SIZE) - 1);
+ case 0x01: /* IMAP translated memory */
+ {
+ int byte;
+ for (byte = 0; byte < size; byte++)
+ {
+ uint8 *mem = imem_addr (addr + byte);
+ if (mem == NULL)
+ return byte;
+ else if (write_p)
+ *mem = buffer[byte];
+ else
+ buffer[byte] = *mem;
+ }
+ return byte;
+ }
- /* FIXME: We do not currently implement xfers across segments, so detect this case and fail gracefully. */
+ case 0x10: /* On-chip data memory */
+ {
+ addr &= ((1 << DMEM_SIZE) - 1);
+ if ((addr + size) > (1 << DMEM_SIZE))
+ {
+ (*d10v_callback->printf_filtered) (d10v_callback, "ERROR: data address 0x%x is outside range 0-0x%x.\n",
+ addr + size - 1, (1 << DMEM_SIZE) - 1);
+ return (0);
+ }
+ memory = State.dmem + addr;
+ break;
+ }
- if ((startsegment != endsegment) && !((endsegment == (startsegment + 1)) && endoffset == 0))
- {
- (*d10v_callback->printf_filtered) (d10v_callback, "ERROR: Unimplemented support for transfers across unified memory segment boundaries\n");
- return (0);
- }
- if (!State.umem[startsegment])
- {
+ case 0x11: /* On-chip insn memory */
+ {
+ addr &= ((1 << IMEM_SIZE) - 1);
+ if ((addr + size) > (1 << IMEM_SIZE))
+ {
+ (*d10v_callback->printf_filtered) (d10v_callback, "ERROR: instruction address 0x%x is outside range 0-0x%x.\n",
+ addr + size - 1, (1 << IMEM_SIZE) - 1);
+ return (0);
+ }
+ memory = State.imem + addr;
+ }
+
+ case 0x12: /* Unified memory */
+ {
+ int startsegment, startoffset; /* Segment and offset within segment where xfer starts */
+ int endsegment, endoffset; /* Segment and offset within segment where xfer ends */
+
+ startsegment = addr >> UMEM_SIZE;
+ startoffset = addr & ((1 << UMEM_SIZE) - 1);
+ endsegment = (addr + size) >> UMEM_SIZE;
+ endoffset = (addr + size) & ((1 << UMEM_SIZE) - 1);
+
+ /* FIXME: We do not currently implement xfers across segments,
+ so detect this case and fail gracefully. */
+
+ if ((startsegment != endsegment) && !((endsegment == (startsegment + 1)) && endoffset == 0))
+ {
+ (*d10v_callback->printf_filtered) (d10v_callback, "ERROR: Unimplemented support for transfers across unified memory segment boundaries\n");
+ return (0);
+ }
+ if (!State.umem[startsegment])
+ {
#ifdef DEBUG
- if ((d10v_debug & DEBUG_MEMSIZE) != 0)
- {
- (*d10v_callback->printf_filtered) (d10v_callback,"Allocating %s bytes unified memory to region %d\n",
- add_commas (buffer, sizeof (buffer), (1UL<<IMEM_SIZE)), startsegment);
- }
+ if ((d10v_debug & DEBUG_MEMSIZE) != 0)
+ {
+ (*d10v_callback->printf_filtered) (d10v_callback,"Allocating %s bytes unified memory to region %d\n",
+ add_commas (buffer, sizeof (buffer), (1UL<<IMEM_SIZE)), startsegment);
+ }
#endif
- State.umem[startsegment] = (uint8 *)calloc(1,1<<UMEM_SIZE);
- }
- if (!State.umem[startsegment])
- {
- (*d10v_callback->printf_filtered) (d10v_callback, "ERROR: Memory allocation of 0x%x bytes failed.\n", 1<<UMEM_SIZE);
- return (0);
- }
- if (write)
- {
- memcpy (State.umem[startsegment]+startoffset, buffer, size);
- }
- else
- {
- memcpy (buffer, State.umem[startsegment]+startoffset, size);
- }
- }
- else if ((addr | 0x0003ffff) == 0x0103ffff)
- {
- /* INSTRUCTION MEMORY (0x01000000 - 0x0103ffff) */
- addr &= ((1 << IMEM_SIZE) - 1);
- if ((addr + size) > (1 << IMEM_SIZE))
- {
- (*d10v_callback->printf_filtered) (d10v_callback, "ERROR: instruction address 0x%x is outside range 0-0x%x.\n",
- addr + size - 1, (1 << IMEM_SIZE) - 1);
- return (0);
- }
- if (write)
- {
- memcpy (State.imem+addr, buffer, size);
- }
- else
- {
- memcpy (buffer, State.imem+addr, size);
- }
+ State.umem[startsegment] = (uint8 *)calloc(1,1<<UMEM_SIZE);
+ }
+ if (!State.umem[startsegment])
+ {
+ (*d10v_callback->printf_filtered) (d10v_callback, "ERROR: Memory allocation of 0x%x bytes failed.\n", 1<<UMEM_SIZE);
+ return (0);
+ }
+ memory = State.umem[startsegment] + startoffset;
+ break;
+ }
+
+ default:
+ {
+ (*d10v_callback->printf_filtered) (d10v_callback, "ERROR: address 0x%lx is not in valid range\n", (long) addr);
+ (*d10v_callback->printf_filtered) (d10v_callback, "0x00xxxxxx: Logical data address segment (DMAP translated memory)\n");
+ (*d10v_callback->printf_filtered) (d10v_callback, "0x01xxxxxx: Logical instruction address segment (IMAP translated memory)\n");
+ (*d10v_callback->printf_filtered) (d10v_callback, "0x10xxxxxx: Physical data memory segment (On-chip data memory)\n");
+ (*d10v_callback->printf_filtered) (d10v_callback, "0x11xxxxxx: Physical instruction memory segment (On-chip insn memory)\n");
+ (*d10v_callback->printf_filtered) (d10v_callback, "0x12xxxxxx: Phisical unified memory segment (Unified memory)\n");
+ return (0);
+ }
}
- else if ((addr | 0x0000ffff) == 0x0200ffff)
+
+ if (write_p)
{
- /* DATA MEMORY (0x02000000 - 0x0200ffff) */
- addr &= ((1 << DMEM_SIZE) - 1);
- if ((addr + size) > (1 << DMEM_SIZE))
- {
- (*d10v_callback->printf_filtered) (d10v_callback, "ERROR: data address 0x%x is outside range 0-0x%x.\n",
- addr + size - 1, (1 << DMEM_SIZE) - 1);
- return (0);
- }
- if (write)
- {
- memcpy (State.dmem+addr, buffer, size);
- }
- else
- {
- memcpy (buffer, State.dmem+addr, size);
- }
+ memcpy (memory, buffer, size);
}
else
{
- (*d10v_callback->printf_filtered) (d10v_callback, "ERROR: address 0x%x is not in valid range\n",addr);
- (*d10v_callback->printf_filtered) (d10v_callback, "Unified memory addresses are 0x00000000 - 0x00ffffff\n");
- (*d10v_callback->printf_filtered) (d10v_callback, "Instruction addresses are 0x01000000 - 0x0103ffff\n");
- (*d10v_callback->printf_filtered) (d10v_callback, "Data addresses are 0x02000000 - 0x0200ffff\n");
- return (0);
+ memcpy (buffer, memory, size);
}
return size;
}
-static int
-sim_write_phys (sd, addr, buffer, size)
- SIM_DESC sd;
- SIM_ADDR addr;
- unsigned char *buffer;
- int size;
-{
- return xfer_mem( addr, buffer, size, 1);
-}
-
int
sim_write (sd, addr, buffer, size)
SIM_DESC sd;
@@ -555,6 +564,11 @@ sim_open (kind, callback, abfd, argv)
}
}
+ /* reset the processor state */
+ if (!State.imem)
+ sim_size(1);
+ sim_create_inferior ((SIM_DESC) 1, NULL, NULL, NULL);
+
/* Fudge our descriptor. */
return (SIM_DESC) 1;
}
@@ -632,10 +646,9 @@ dmem_addr( addr )
}
-static uint8 *
-pc_addr()
+uint8 *
+imem_addr (uint32 pc)
{
- uint32 pc = ((uint32)PC) << 2;
uint16 imap;
if (pc & 0x20000)
@@ -647,12 +660,7 @@ pc_addr()
return State.imem + pc;
if (State.umem[imap & 0xff] == NULL)
- {
- (*d10v_callback->printf_filtered) (d10v_callback, "ERROR: unified memory region %d unmapped, pc = 0x%lx\n",
- imap & 0xff, (long)PC);
- State.exception = SIGBUS;
- return 0;
- }
+ return 0;
/* Discard upper bit(s) of PC in case IMAP1 selects unified memory. */
pc &= (1 << UMEM_SIZE) - 1;
@@ -680,6 +688,7 @@ sim_resume (sd, step, siggnal)
{
uint32 inst;
int do_iba;
+ uint8 *iaddr;
/* (*d10v_callback->printf_filtered) (d10v_callback, "sim_resume (%d,%d) PC=0x%x\n",step,siggnal,PC); */
State.exception = 0;
@@ -688,7 +697,15 @@ sim_resume (sd, step, siggnal)
do
{
- inst = get_longword( pc_addr() );
+ iaddr = imem_addr ((uint32)PC << 2);
+ if (iaddr == NULL)
+ {
+ State.exception = SIGBUS;
+ break;
+ }
+
+ inst = get_longword( iaddr );
+
State.pc_changed = 0;
ins_type_counters[ (int)INS_CYCLES ]++;
@@ -882,6 +899,24 @@ sim_create_inferior (sd, abfd, argv, env)
/* reset all state information */
memset (&State.regs, 0, (int)&State.imem - (int)&State.regs[0]);
+ if (argv)
+ {
+ /* a hack to set r0/r1 with argc/argv */
+ /* some high memory that won't be overwritten by the stack soon */
+ addr = State.regs[0] = 0x7C00;
+ p = 20;
+ i = 0;
+ while (argv[i])
+ {
+ SW (addr + 2*i, addr + p);
+ size = strlen (argv[i]) + 1;
+ sim_write (sd, addr + 0, argv[i], size);
+ p += size;
+ i++;
+ }
+ State.regs[1] = i;
+ }
+
/* set PC */
if (abfd != NULL)
start_address = bfd_get_start_address (abfd);
@@ -895,10 +930,18 @@ sim_create_inferior (sd, abfd, argv, env)
/* cpu resets imap0 to 0 and imap1 to 0x7f, but D10V-EVA board */
/* resets imap0 and imap1 to 0x1000. */
-
- SET_IMAP0(0x1000);
- SET_IMAP1(0x1000);
- SET_DMAP(0);
+ if (1)
+ {
+ SET_IMAP0 (0x0000);
+ SET_IMAP1 (0x007f);
+ SET_DMAP (0x0000);
+ }
+ else
+ {
+ SET_IMAP0(0x1000);
+ SET_IMAP1(0x1000);
+ SET_DMAP(0);
+ }
return SIM_RC_OK;
}
@@ -928,7 +971,7 @@ sim_stop_reason (sd, reason, sigrc)
case SIG_D10V_EXIT: /* exit trap */
*reason = sim_exited;
- *sigrc = State.regs[2];
+ *sigrc = State.regs[0];
break;
default: /* some signal */
@@ -949,9 +992,6 @@ sim_fetch_register (sd, rn, memory)
int rn;
unsigned char *memory;
{
- if (!State.imem)
- init_system();
-
if (rn > 34)
WRITE_64 (memory, State.a[rn-35]);
else if (rn == 32)
@@ -972,9 +1012,6 @@ sim_store_register (sd, rn, memory)
int rn;
unsigned char *memory;
{
- if (!State.imem)
- init_system();
-
if (rn > 34)
State.a[rn-35] = READ_64 (memory) & MASK40;
else if (rn == 34)
@@ -1014,7 +1051,7 @@ sim_load (sd, prog, abfd, from_tty)
}
prog_bfd = sim_load_file (sd, myname, d10v_callback, prog, abfd,
sim_kind == SIM_OPEN_DEBUG,
- 0, sim_write_phys);
+ 1/*LMA*/, sim_write);
if (prog_bfd == NULL)
return SIM_RC_FAIL;
prog_bfd_was_opened_p = abfd == NULL;
generated by cgit v1.1 at 2024-11-29 17:20:21 +0000