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[/] [or1k/] [tags/] [nog_patch_47/] [or1ksim/] [cpu/] [common/] [abstract.c] - Blame information for rev 538

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/* abstract.c -- Abstract entities
   Copyright (C) 1999 Damjan Lampret, lampret@opencores.org
 
This file is part of OpenRISC 1000 Architectural Simulator.
 
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
 
/* Abstract memory and routines that go with this. I need to
add all sorts of other abstract entities. Currently we have
only memory. */
 
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <string.h>
 
#include "config.h"
#include "sim-config.h"
 
#include "parse.h"
#include "abstract.h"
#include "labels.h"
#include "arch.h"
#include "execute.h"
#include "sprs.h"
#include "stats.h"
#include "except.h"
#include "debug_unit.h"
#include "opcode/or32.h"
 
extern unsigned long reg[];
extern char *disassembled;
 
/* This is an abstract+physical memory array rather than only physical
   memory array */
static unsigned long *simmem32;
 
/* Pointer to memory area descriptions that are assigned to individual
   peripheral devices. */
struct dev_memarea *dev_list;
 
/* Temporary variable to increase speed.  */
struct dev_memarea *cur_area;
 
/* Virtual address of current access. */
unsigned long cur_vadd;
 
/* Temporary variable, which specifies how many cycles did the memory acces require */
extern int mem_cycles;
 
/* It returns physical address. */
inline unsigned long translate_vrt_to_phy_add(unsigned long virtaddr, int write_access)
{
  if (config.ic.tagtype == CT_NONE)
    return virtaddr;
  else
    if (config.ic.tagtype == CT_VIRTUAL) {
      return immu_translate(virtaddr, write_access);
    }
    else if (config.dc.tagtype == CT_PHYSICAL) {
      unsigned long phyaddr = immu_translate(virtaddr, write_access);
      return phyaddr;
    }
    else {
      printf("INTERNAL ERROR: Unknown insn cache type.\n");
      cont_run = 0;
    }
 
  return -1;
}
 
/* Calls IMMU translation routines before simulating insn
cache for virtually indexed insn cache or after simulating insn cache
for physically indexed insn cache. It returns physical address. */
 
unsigned long simulate_ic_mmu_fetch(unsigned long virtaddr)
{
 
  unsigned long phyaddr;
 
  if ((phyaddr = translate_vrt_to_phy_add(virtaddr, 0)) != -1) {
    ic_simulate_fetch(phyaddr);
    return phyaddr;
  }
  else {
    printf("INTERNAL ERROR: Unknown insn cache type.\n");
    cont_run = 0;
  }
  return -1;
}
 
/* Calls DMMU translation routines (load cycles) before simulating data
   cache for virtually indexed data cache or after simulating data cache
   for physically indexed data cache. It returns physical address. */
 
unsigned long simulate_dc_mmu_load(unsigned long virtaddr)
{
  if (config.dc.tagtype == CT_NONE)
    return virtaddr;
  else
  if (config.dc.tagtype == CT_VIRTUAL) {
    dc_simulate_read(virtaddr);
    return dmmu_translate(virtaddr, 0);
  }
  else if (config.dc.tagtype == CT_PHYSICAL) {
    unsigned long phyaddr = dmmu_translate(virtaddr, 0);
    dc_simulate_read(phyaddr);
    return phyaddr;
  }
  else {
    printf("INTERNAL ERROR: Unknown data cache type.\n");
    cont_run = 0;
  }
 
  return -1;
}
 
/* Calls DMMU translation routines (store cycles) before simulating data
cache for virtually indexed data cache or after simulating data cache
for physically indexed data cache. It returns physical address. */
 
unsigned long simulate_dc_mmu_store(unsigned long virtaddr)
{
  if (config.dc.tagtype == CT_NONE)
    return virtaddr;
  else
  if (config.dc.tagtype == CT_VIRTUAL) {
    dc_simulate_write(virtaddr);
    return dmmu_translate(virtaddr, 1);
  }
  else if (config.dc.tagtype == CT_PHYSICAL) {
    unsigned long phyaddr = dmmu_translate(virtaddr, 1);
    dc_simulate_write(phyaddr);
    return phyaddr;
  }
  else {
    printf("INTERNAL ERROR: Unknown data cache type.\n");
    cont_run = 0;
  }
 
  return -1;
}
 
/* Calculates bit mask to fit the data */
unsigned long bit_mask (unsigned long data) {
  int i = 0;
  data--;
  while (data >> i)
    data |= 1 << i++;
  return data;
}
 
/* Register read and write function for a memory area.
   addr is inside the area, if addr & addr_mask == addr_compare
   (used also by peripheral devices like 16450 UART etc.) */
void register_memoryarea_mask(unsigned long addr_mask, unsigned long addr_compare,
                         unsigned long size, unsigned granularity,
                         unsigned long (readfunc)(unsigned long),
                         void (writefunc)(unsigned long, unsigned long))
{
  struct dev_memarea **pptmp;
  unsigned long size_mask = bit_mask (size);
  int found_error = 0;
  addr_compare &= addr_mask;
 
  debug(5, "addr & %08x == %08x to %08x, size %08x, gran %iB\n", addr_mask, addr_compare, addr_compare | bit_mask (size), size, granularity);
  /* Go to the end of the list. */
  for(pptmp = &dev_list; *pptmp; pptmp = &(*pptmp)->next)
    if ((addr_compare >= (*pptmp)->addr_compare) && (addr_compare < (*pptmp)->addr_compare + (*pptmp)->size)
     || (addr_compare + size > (*pptmp)->addr_compare) && (addr_compare < (*pptmp)->addr_compare + (*pptmp)->size)) {
      if (!found_error) {
        fprintf (stderr, "ERROR: Overlapping memory area(s):\n");
        fprintf (stderr, "\taddr & %08x == %08x to %08x, size %08x, gran %iB\n", addr_mask, addr_compare, addr_compare | bit_mask (size), size, granularity);
      }
      found_error = 1;
      fprintf (stderr, "and\taddr & %08x == %08x to %08x, size %08x, gran %iB\n", (*pptmp)->addr_mask, (*pptmp)->addr_compare,
        (*pptmp)->addr_compare | (*pptmp)->size_mask, (*pptmp)->size, (*pptmp)->granularity);
    }
 
  if (found_error)
    exit (-1);
 
  cur_area = *pptmp = (struct dev_memarea *)malloc(sizeof(struct dev_memarea));
  (*pptmp)->addr_mask = addr_mask;
  (*pptmp)->addr_compare = addr_compare;
  (*pptmp)->size = size;
  (*pptmp)->size_mask = size_mask;
  (*pptmp)->granularity = granularity;
  (*pptmp)->readfunc = readfunc;
  (*pptmp)->writefunc = writefunc;
  (*pptmp)->log = 0;
  (*pptmp)->next = NULL;
}
 
/* Register read and write function for a memory area.
   Memory areas should be aligned. Memory area is rounded up to
   fit the nearest 2^n aligment.
   (used also by peripheral devices like 16450 UART etc.) */
void register_memoryarea(unsigned long addr,
                         unsigned long size, unsigned granularity,
                         unsigned long (readfunc)(unsigned long),
                         void (writefunc)(unsigned long, unsigned long))
{
  unsigned long size_mask = bit_mask (size);
  unsigned long addr_mask = ~size_mask;
  register_memoryarea_mask (addr_mask, addr & addr_mask,
                      size_mask + 1, granularity,
                      readfunc, writefunc);
}
 
 
/* Check if access is to registered area of memory. */
struct dev_memarea *verify_memoryarea(unsigned long addr)
{
  struct dev_memarea *ptmp;
 
  /* Check list of registered devices. */
  for(ptmp = dev_list; ptmp; ptmp = ptmp->next)
    if ((addr & ptmp->addr_mask) == ptmp->addr_compare)
      return cur_area = ptmp;
  return cur_area = NULL;
}
 
/* Returns 32-bit values from mem array. Big endian version. */
unsigned long read_mem(unsigned long memaddr,int* breakpoint)
{
  unsigned long temp;
  struct dev_memarea *dev;
 
  cur_vadd = memaddr;
  if (DEBUG_ENABLED)
    *breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr); /* 28/05/01 CZ */
  temp = evalsim_mem32(memaddr);
  if (DEBUG_ENABLED)
    *breakpoint += CheckDebugUnit(DebugLoadData,temp);  /* MM170901 */
  return temp;
}
 
/* Returns 32-bit values from mem array. Big endian version. */
unsigned long eval_mem32(unsigned long memaddr,int* breakpoint)
{
 
  unsigned long temp;
  struct dev_memarea *dev;
 
  cur_vadd = memaddr;
  memaddr = simulate_dc_mmu_load(memaddr);
  if (pending.valid)
    return 0;
 
  if (memaddr & 3) {
    except_handle (EXCEPT_ALIGN, memaddr);
    return 0;
  }
 
  if (DEBUG_ENABLED)
    *breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr); /* 28/05/01 CZ */
  temp = evalsim_mem32(memaddr);
  if (DEBUG_ENABLED)
    *breakpoint += CheckDebugUnit(DebugLoadData,temp);  /* MM170901 */
  return temp;
}
 
/* Returns 32-bit values from mem array. Big endian version. */
unsigned long eval_insn(unsigned long memaddr,int* breakpoint)
{
  unsigned long temp;
  struct dev_memarea *dev;
 
//  memaddr = simulate_ic_mmu_fetch(memaddr);
  cur_vadd = pc;
  ic_simulate_fetch(memaddr);
  if (DEBUG_ENABLED)
    *breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr); /* 28/05/01 CZ */
  temp = evalsim_mem32(memaddr);
  if (DEBUG_ENABLED)
    *breakpoint += CheckDebugUnit(DebugLoadData,temp);  /* MM170901 */
  return temp;
}
 
unsigned long evalsim_mem32(unsigned long memaddr)
{
  unsigned long temp;
 
  if (verify_memoryarea(memaddr)) {
    switch(cur_area->granularity) {
    case 4:
      temp = cur_area->readfunc(memaddr);
      mem_cycles += cur_area->delayr;
      break;
    case 1:
      temp = cur_area->readfunc(memaddr) << 24;
      temp |= cur_area->readfunc(memaddr + 1) << 16;
      temp |= cur_area->readfunc(memaddr + 2) << 8;
      temp |= cur_area->readfunc(memaddr + 3);
      mem_cycles += cur_area->delayr * 4;
      break;
    case 2:
      temp = cur_area->readfunc(memaddr) << 16;
      temp |= cur_area->readfunc(memaddr + 2);
      mem_cycles += cur_area->delayr * 2;
      break;
    }
    if (cur_area->log)
      fprintf (cur_area->log, "[%08x] -> read %08x\n", memaddr, temp);
  } else {
    printf("EXCEPTION: read out of memory (32-bit access to %.8lx)\n", memaddr);
    except_handle(EXCEPT_BUSERR, cur_vadd);
    temp = 0;
  }
  return temp;
}
 
/* Returns 16-bit values from mem array. Big endian version. */
 
unsigned short eval_mem16(unsigned long memaddr,int* breakpoint)
{
  unsigned short temp;
  cur_vadd = memaddr;
  memaddr = simulate_dc_mmu_load(memaddr);
  if (pending.valid)
    return 0;
 
  if (memaddr & 1) {
    except_handle (EXCEPT_ALIGN, memaddr);
    return 0;
  }
 
  if (DEBUG_ENABLED)
    *breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr); /* 28/05/01 CZ */
 
  temp = evalsim_mem16(memaddr);
  if (DEBUG_ENABLED)
    *breakpoint += CheckDebugUnit(DebugLoadData,temp);  /* MM170901 */
  return temp;
}
 
unsigned short evalsim_mem16(unsigned long memaddr)
{
  unsigned long temp;
 
  if (verify_memoryarea(memaddr)) {
    switch(cur_area->granularity) {
    case 1:
      temp = cur_area->readfunc(memaddr) << 8;
      temp |= cur_area->readfunc(memaddr + 1);
      mem_cycles += cur_area->delayr * 2;
      break;
    case 2:
      temp = cur_area->readfunc(memaddr);
      mem_cycles += cur_area->delayr;
      break;
    case 4:
      temp = evalsim_mem32 (memaddr & ~3ul);
      if (memaddr & 2)
        temp &= 0xffff;
      else
        temp >>= 16;
      break;
    }
    if (cur_area->log)
      fprintf (cur_area->log, "[%08x] -> read %08x\n", memaddr, temp);
  } else {
    printf("EXCEPTION: read out of memory (16-bit access to %.8lx)\n", memaddr);
    except_handle(EXCEPT_BUSERR, cur_vadd);
    temp = 0;
  }
  return temp;
}
 
 
/* Returns 8-bit values from mem array. */
 
unsigned char eval_mem8(unsigned long memaddr,int* breakpoint)
{
  unsigned long temp;
  cur_vadd = memaddr;
  memaddr = simulate_dc_mmu_load(memaddr);
  if (pending.valid)
    return 0;
  if (DEBUG_ENABLED)
    *breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr);  /* 28/05/01 CZ */
 
  temp = evalsim_mem8(memaddr);
  if (DEBUG_ENABLED)
    *breakpoint += CheckDebugUnit(DebugLoadData,temp);  /* MM170901 */
  return temp;
}
 
unsigned char evalsim_mem8(unsigned long memaddr)
{
  unsigned long temp;
 
  if (verify_memoryarea(memaddr)) {
    switch(cur_area->granularity) {
    case 1:
      temp = cur_area->readfunc(memaddr);
      mem_cycles += cur_area->delayr;
      break;
    case 2:
      temp = evalsim_mem16 (memaddr & ~1ul);
      if (memaddr & 1)
        temp &= 0xff;
      else
        temp >>= 8;
      break;
    case 4:
      temp = evalsim_mem32 (memaddr & ~3ul);
      temp >>= 8 * (3 - (memaddr & 3));
      temp &= 0xff;
      break;
    }
    if (cur_area->log)
      fprintf (cur_area->log, "[%08x] -> read %08x\n", memaddr, temp);
  } else {
    printf("EXCEPTION: read out of memory (8-bit access to %.8lx)\n", memaddr);
    except_handle(EXCEPT_BUSERR, cur_vadd);
    temp = 0;
  }
  return temp;
}
 
/* Set mem, 32-bit. Big endian version. */
 
void set_mem32(unsigned long memaddr, unsigned long value,int* breakpoint)
{
  cur_vadd = memaddr;
  memaddr = simulate_dc_mmu_store(memaddr);
 
  /* If we produced exception don't set anything */
  if (pending.valid == 1)
    return;
 
  if (memaddr & 3) {
    except_handle (EXCEPT_ALIGN, memaddr);
    return;
  }
 
  if (DEBUG_ENABLED) {
    *breakpoint += CheckDebugUnit(DebugStoreAddress,memaddr);  /* 28/05/01 CZ */
    *breakpoint += CheckDebugUnit(DebugStoreData,value);
  }
 
  setsim_mem32(memaddr, value);
}
 
void setsim_mem32(unsigned long memaddr, unsigned long value)
{
  struct dev_memarea *dev;
 
  if (verify_memoryarea(memaddr)) {
    if (cur_area->log)
      fprintf (cur_area->log, "[%08x] -> write %08x\n", memaddr, value);
    switch(cur_area->granularity) {
    case 4:
      cur_area->writefunc(memaddr, value);
      mem_cycles += cur_area->delayw;
      break;
    case 1:
      cur_area->writefunc(memaddr    , (value >> 24) & 0xFF);
      cur_area->writefunc(memaddr + 1, (value >> 16) & 0xFF);
      cur_area->writefunc(memaddr + 2, (value >>  8) & 0xFF);
      cur_area->writefunc(memaddr + 3, (value      ) & 0xFF);
      mem_cycles += cur_area->delayw * 4;
      break;
    case 2:
      cur_area->writefunc(memaddr, (value >> 16) & 0xFFFF);
      cur_area->writefunc(memaddr + 2, value & 0xFFFF);
      mem_cycles += cur_area->delayw * 2;
      break;
    }
  } else {
    printf("EXCEPTION: write out of memory (32-bit access to %.8lx)\n", memaddr);
    except_handle(EXCEPT_BUSERR, cur_vadd);
  }
}
 
/* Set mem, 16-bit. Big endian version. */
 
void set_mem16(unsigned long memaddr, unsigned short value,int* breakpoint)
{
  cur_vadd = memaddr;
  memaddr = simulate_dc_mmu_store(memaddr);
 
  /* If we produced exception don't set anything */
  if (pending.valid == 1)
    return;
 
  if (memaddr & 1) {
    except_handle (EXCEPT_ALIGN, memaddr);
    return;
  }
 
  if (DEBUG_ENABLED) {
    *breakpoint += CheckDebugUnit(DebugStoreAddress,memaddr);  /* 28/05/01 CZ */
    *breakpoint += CheckDebugUnit(DebugStoreData,value);
  }
 
  setsim_mem16(memaddr, value);
}
 
void setsim_mem16(unsigned long memaddr, unsigned short value)
{
  unsigned long temp;
  if (verify_memoryarea(memaddr)) {
    if (cur_area->log)
      fprintf (cur_area->log, "[%08x] -> write %08x\n", memaddr, value);
    switch(cur_area->granularity) {
    case 1:
      cur_area->writefunc(memaddr, (value >> 8) & 0xFF);
      cur_area->writefunc(memaddr + 1, value & 0xFF);
      mem_cycles += cur_area->delayw * 2;
      break;
    case 2:
      cur_area->writefunc(memaddr, value & 0xFFFF);
      mem_cycles += cur_area->delayw;
      break;
    case 4:
      temp = evalsim_mem32 (memaddr & ~3ul);
      temp &= 0xffff << ((memaddr & 2) ? 0 : 16);
      temp |= (unsigned long)(value & 0xffff) << ((memaddr & 2) ? 16 : 0);
      setsim_mem32 (memaddr & ~3ul, temp);
      break;
    }
  } else {
    printf("EXCEPTION: write out of memory (16-bit access to %.8lx)\n", memaddr);
    except_handle(EXCEPT_BUSERR, cur_vadd);
  }
}
 
/* Set mem, 8-bit. */
 
void set_mem8(unsigned long memaddr, unsigned char value,int* breakpoint)
{
  cur_vadd = memaddr;
  memaddr = simulate_dc_mmu_store(memaddr);
 
  /* If we produced exception don't set anything */
  if (pending.valid == 1)
    return;
 
  if (DEBUG_ENABLED) {
    *breakpoint += CheckDebugUnit(DebugStoreAddress,memaddr);  /* 28/05/01 CZ */
    *breakpoint += CheckDebugUnit(DebugStoreData,value);
  }
 
  setsim_mem8(memaddr, value);
}
 
void setsim_mem8(unsigned long memaddr, unsigned char value)
{
  unsigned long temp;
  if (verify_memoryarea(memaddr)) {
    if (cur_area->log)
      fprintf (cur_area->log, "[%08x] -> write %08x\n", memaddr, value);
    switch (cur_area->granularity) {
    case 1:
      cur_area->writefunc(memaddr, value);
      mem_cycles += cur_area->delayw;
      break;
    case 2:
      temp = evalsim_mem16 (memaddr & ~1ul);
      temp &= 0xff << ((memaddr & 1) ? 0 : 8);
      temp |= (unsigned short)(value & 0xff) << ((memaddr & 1) ? 8 : 0);
      setsim_mem16 (memaddr & ~1ul, temp);
      break;
    case 4:
      temp = evalsim_mem32 (memaddr & ~3ul);
      printf ("%08x\n", temp);
      temp &= ~(0xff << (8 * (3 - (memaddr & 3))));
      printf ("%08x\n", temp);
      temp |= (unsigned long)(value & 0xff) << (8 * (3 - (memaddr & 3)));
      printf ("%08x\n", temp);
      setsim_mem32 (memaddr & ~3ul, temp);
      break;
    }
  } else {
    printf("EXCEPTION: write out of memory (8-bit access to %.8lx)\n", memaddr);
    except_handle(EXCEPT_BUSERR, cur_vadd);
  }
}
 
void dumpmemory(unsigned int from, unsigned int to, int disasm, int nl)
{
  unsigned int i, j;
  struct label_entry *tmp;
  int breakpoint = 0;
  int ilen = disasm ? 4 : 16;
 
  for(i = from; i < to; i += ilen) {
    printf("%.8x: ", i);
    for (j = 0; j < ilen;) {
      int data = -1;
      if (!disasm) {
        tmp = NULL;
        if (verify_memoryarea(i+j)) {
          struct label_entry *entry;
          entry = get_label(i + j);
          if (entry)
            printf("(%s)", entry->name);
          printf("%02x ", data = evalsim_mem8(i+j));
        } else printf("XX ");
        j++;
      } else {
        int breakpoint;
        unsigned int _insn = read_mem(i, &breakpoint);
        int index = insn_decode (_insn);
        int len = insn_len (index);
 
        tmp = NULL;
        if (verify_memoryarea(i+j)) {
          struct label_entry *entry;
          entry = get_label(i + j);
          if (entry)
            printf("(%s)", entry->name);
 
          printf(": %08x ", (unsigned long)_insn);
          if (index >= 0) {
            disassemble_insn (_insn);
            printf(" %s", disassembled);
          } else
            printf("<invalid>");
        } else printf("XXXXXXXX");
        j += len;
      }
    }
    if (nl)
      printf ("\n");
  }
}
 
unsigned long simmem_read_word(unsigned long addr) {
  return simmem32[(cur_area->misc + (addr & cur_area->size_mask)) >> 2];
}
 
void simmem_write_word(unsigned long addr, unsigned long value) {
  simmem32[(cur_area->misc + (addr & cur_area->size_mask)) >> 2] = value;
}
 
unsigned long simmem_read_zero(unsigned long addr) {
  if (config.sim.verbose)
    fprintf (stderr, "WARNING: memory read from non-read memory area 0x%08x.\n", addr);
  return 0;
}
 
void simmem_write_null(unsigned long addr, unsigned long value) {
  if (config.sim.verbose)
    fprintf (stderr, "WARNING: memory write to 0x%08x, non-write memory area (value 0x%08x).\n", addr, value);
}
 
/* Initialize memory table from a config struct */
 
void init_memory_table ()
{
  unsigned long memory_needed = 0;
 
  /* If nothing was defined, use default memory block */
  if (config.memory.nmemories) {
    int i;
    for (i = 0; i < config.memory.nmemories; i++) {
      unsigned long start = config.memory.table[i].baseaddr;
      unsigned long length = config.memory.table[i].size;
      char *type = config.memory.table[i].name;
      int rd = config.memory.table[i].delayr;
      int wd = config.memory.table[i].delayw;
      int ce = config.memory.table[i].ce;
      if (config.sim.verbose)
        debug (1, "%08X %08X (%i KB): %s (activated by CE%i; read delay = %icyc, write delay = %icyc)\n",
          start, length, length >> 10, type, ce, rd, wd);
      register_memoryarea(start, length, 4, &simmem_read_word, &simmem_write_word);
      cur_area->misc = memory_needed;
      cur_area->delayw = wd;
      cur_area->delayr = rd;
      if (config.memory.table[i].log[0] != '\0') {
        if ((cur_area->log = fopen (config.memory.table[i].log, "wt+")) == NULL)
          fprintf (stderr, "WARNING: Cannot open '%s'.\n", config.memory.table[i].log);
      } else
        cur_area->log = 0;
      memory_needed += cur_area->size;
    }
    printf ("\n");
  } else {
    if (config.sim.verbose)
      fprintf (stderr, "WARNING: Memory not defined, assuming standard configuration.\n");
    register_memoryarea(DEFAULT_MEMORY_START, DEFAULT_MEMORY_LEN, 4, &simmem_read_word, &simmem_write_word);
    memory_needed += cur_area->size;
  }
 
  simmem32 = (unsigned long *) malloc (sizeof (unsigned long) * ((memory_needed + 3) / 4));
  if (!simmem32) {
    fprintf (stderr, "Failed to allocate sim memory. Aborting\n");
    exit (-1);
  }
}
 
/* Changes read/write memory in read/write only */
 
void lock_memory_table ()
{
  struct dev_memarea *ptmp;
 
  /* Check list of registered devices. */
  for(ptmp = dev_list; ptmp; ptmp = ptmp->next) {
    if (ptmp->delayr < 0 && ptmp->readfunc == &simmem_read_word)
      ptmp->readfunc = &simmem_read_zero;
    if (ptmp->delayw < 0 && ptmp->writefunc == &simmem_write_word)
      ptmp->writefunc = &simmem_write_null;
  }
}
 
/* Closes files, etc. */
 
void done_memory_table ()
{
  struct dev_memarea *ptmp;
 
  /* Check list of registered devices. */
  for(ptmp = dev_list; ptmp; ptmp = ptmp->next) {
    if (ptmp->log)
      fclose (ptmp->log);
  }
}
 
/* Displays current memory configuration */
 
void memory_table_status ()
{
  struct dev_memarea *ptmp;
 
  /* Check list of registered devices. */
  for(ptmp = dev_list; ptmp; ptmp = ptmp->next) {
    printf ("addr & %08x == %08x to %08x, size %08x, gran %iB\n",
      ptmp->addr_mask, ptmp->addr_compare, ptmp->addr_compare | bit_mask (ptmp->size),
      ptmp->size, ptmp->granularity);
    printf ("\t");
    if (ptmp->delayr >= 0)
      printf ("read delay = %i cycles, ", ptmp->delayr);
    else
      printf ("reads not possible, ");
 
    if (ptmp->delayw >= 0)
      printf ("write delay = %i cycles", ptmp->delayw);
    else
      printf ("writes not possible");
 
    if (ptmp->log)
      printf (", (logged)\n");
    else
      printf ("\n");
  }
}
 
/* Outputs time in pretty form to dest string */
 
void generate_time_pretty (char *dest, long time_ps)
{
  int exp3 = 0;
  if (time_ps) {
    while ((time_ps % 1000) == 0) {
      time_ps /= 1000;
      exp3++;
    }
  }
  sprintf (dest, "%i%cs", time_ps, "pnum"[exp3]);
}

Line No.	Rev	Author	Line
1	2	cvs	`/* abstract.c -- Abstract entities`
2			`Copyright (C) 1999 Damjan Lampret, lampret@opencores.org`
3
4			`This file is part of OpenRISC 1000 Architectural Simulator.`
5
6			`This program is free software; you can redistribute it and/or modify`
7			`it under the terms of the GNU General Public License as published by`
8			`the Free Software Foundation; either version 2 of the License, or`
9			`(at your option) any later version.`
10
11			`This program is distributed in the hope that it will be useful,`
12			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
13			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
14			`GNU General Public License for more details.`
15
16			`You should have received a copy of the GNU General Public License`
17			`along with this program; if not, write to the Free Software`
18			`Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */`
19
20	66	lampret	`/* Abstract memory and routines that go with this. I need to`
21	2	cvs	`add all sorts of other abstract entities. Currently we have`
22			`only memory. */`
23
24	221	markom	`#include <stdlib.h>`
25	2	cvs	`#include <stdio.h>`
26			`#include <ctype.h>`
27			`#include <string.h>`
28
29	6	lampret	`#include "config.h"`
30	7	jrydberg	`#include "sim-config.h"`
31	6	lampret
32	2	cvs	`#include "parse.h"`
33			`#include "abstract.h"`
34	261	markom	`#include "labels.h"`
35	2	cvs	`#include "arch.h"`
36			`#include "execute.h"`
37	32	lampret	`#include "sprs.h"`
38	35	lampret	`#include "stats.h"`
39	32	lampret	`#include "except.h"`
40	123	markom	`#include "debug_unit.h"`
41	134	markom	`#include "opcode/or32.h"`
42	2	cvs
43			`extern unsigned long reg[];`
44	138	markom	`extern char *disassembled;`
45	2	cvs
46	28	lampret	`/* This is an abstract+physical memory array rather than only physical`
47			`memory array */`
48	538	markom	`static unsigned long *simmem32;`
49	2	cvs
50	30	lampret	`/* Pointer to memory area descriptions that are assigned to individual`
51			`peripheral devices. */`
52			`struct dev_memarea *dev_list;`
53
54	221	markom	`/* Temporary variable to increase speed. */`
55			`struct dev_memarea *cur_area;`
56
57	525	simons	`/* Virtual address of current access. */`
58			`unsigned long cur_vadd;`
59
60	537	markom	`/* Temporary variable, which specifies how many cycles did the memory acces require */`
61			`extern int mem_cycles;`
62
63	349	simons	`/* It returns physical address. */`
64	430	markom	`inline unsigned long translate_vrt_to_phy_add(unsigned long virtaddr, int write_access)`
65	77	lampret	`{`
66	429	markom	`if (config.ic.tagtype == CT_NONE)`
67	239	markom	`return virtaddr;`
68			`else`
69	429	markom	`if (config.ic.tagtype == CT_VIRTUAL) {`
70	430	markom	`return immu_translate(virtaddr, write_access);`
71	239	markom	`}`
72	429	markom	`else if (config.dc.tagtype == CT_PHYSICAL) {`
73	430	markom	`unsigned long phyaddr = immu_translate(virtaddr, write_access);`
74	239	markom	`return phyaddr;`
75			`}`
76			`else {`
77			`printf("INTERNAL ERROR: Unknown insn cache type.\n");`
78			`cont_run = 0;`
79			`}`
80	221	markom
81	239	markom	`return -1;`
82	77	lampret	`}`
83
84	349	simons	`/* Calls IMMU translation routines before simulating insn`
85			`cache for virtually indexed insn cache or after simulating insn cache`
86			`for physically indexed insn cache. It returns physical address. */`
87
88			`unsigned long simulate_ic_mmu_fetch(unsigned long virtaddr)`
89			`{`
90
91			`unsigned long phyaddr;`
92
93	430	markom	`if ((phyaddr = translate_vrt_to_phy_add(virtaddr, 0)) != -1) {`
94	349	simons	`ic_simulate_fetch(phyaddr);`
95			`return phyaddr;`
96			`}`
97			`else {`
98			`printf("INTERNAL ERROR: Unknown insn cache type.\n");`
99			`cont_run = 0;`
100			`}`
101			`return -1;`
102			`}`
103
104	77	lampret	`/* Calls DMMU translation routines (load cycles) before simulating data`
105	239	markom	`cache for virtually indexed data cache or after simulating data cache`
106			`for physically indexed data cache. It returns physical address. */`
107	6	lampret
108			`unsigned long simulate_dc_mmu_load(unsigned long virtaddr)`
109			`{`
110	429	markom	`if (config.dc.tagtype == CT_NONE)`
111	239	markom	`return virtaddr;`
112			`else`
113	429	markom	`if (config.dc.tagtype == CT_VIRTUAL) {`
114	327	lampret	`dc_simulate_read(virtaddr);`
115	430	markom	`return dmmu_translate(virtaddr, 0);`
116	239	markom	`}`
117	429	markom	`else if (config.dc.tagtype == CT_PHYSICAL) {`
118	430	markom	`unsigned long phyaddr = dmmu_translate(virtaddr, 0);`
119	327	lampret	`dc_simulate_read(phyaddr);`
120	239	markom	`return phyaddr;`
121			`}`
122			`else {`
123	327	lampret	`printf("INTERNAL ERROR: Unknown data cache type.\n");`
124	239	markom	`cont_run = 0;`
125			`}`
126	221	markom
127	239	markom	`return -1;`
128	6	lampret	`}`
129
130	77	lampret	`/* Calls DMMU translation routines (store cycles) before simulating data`
131	6	lampret	`cache for virtually indexed data cache or after simulating data cache`
132			`for physically indexed data cache. It returns physical address. */`
133
134			`unsigned long simulate_dc_mmu_store(unsigned long virtaddr)`
135			`{`
136	429	markom	`if (config.dc.tagtype == CT_NONE)`
137	239	markom	`return virtaddr;`
138			`else`
139	429	markom	`if (config.dc.tagtype == CT_VIRTUAL) {`
140	239	markom	`dc_simulate_write(virtaddr);`
141	430	markom	`return dmmu_translate(virtaddr, 1);`
142	239	markom	`}`
143	429	markom	`else if (config.dc.tagtype == CT_PHYSICAL) {`
144	430	markom	`unsigned long phyaddr = dmmu_translate(virtaddr, 1);`
145	239	markom	`dc_simulate_write(phyaddr);`
146			`return phyaddr;`
147			`}`
148			`else {`
149			`printf("INTERNAL ERROR: Unknown data cache type.\n");`
150			`cont_run = 0;`
151			`}`
152	221	markom
153	239	markom	`return -1;`
154	6	lampret	`}`
155
156	261	markom	`/* Calculates bit mask to fit the data */`
157			`unsigned long bit_mask (unsigned long data) {`
158			`int i = 0;`
159			`data--;`
160	382	markom	`while (data >> i)`
161	261	markom	`data \|= 1 << i++;`
162			`return data;`
163			`}`
164
165			`/* Register read and write function for a memory area.`
166			`addr is inside the area, if addr & addr_mask == addr_compare`
167			`(used also by peripheral devices like 16450 UART etc.) */`
168			`void register_memoryarea_mask(unsigned long addr_mask, unsigned long addr_compare,`
169			`unsigned long size, unsigned granularity,`
170	239	markom	`unsigned long (readfunc)(unsigned long),`
171	261	markom	`void (writefunc)(unsigned long, unsigned long))`
172	30	lampret	`{`
173	239	markom	`struct dev_memarea **pptmp;`
174	261	markom	`unsigned long size_mask = bit_mask (size);`
175			`int found_error = 0;`
176			`addr_compare &= addr_mask;`
177	221	markom
178	382	markom	`debug(5, "addr & %08x == %08x to %08x, size %08x, gran %iB\n", addr_mask, addr_compare, addr_compare \| bit_mask (size), size, granularity);`
179	239	markom	`/* Go to the end of the list. */`
180	261	markom	`for(pptmp = &dev_list; pptmp; pptmp = &(pptmp)->next)`
181			`if ((addr_compare >= (pptmp)->addr_compare) && (addr_compare < (pptmp)->addr_compare + (*pptmp)->size)`
182			`\|\| (addr_compare + size > (pptmp)->addr_compare) && (addr_compare < (pptmp)->addr_compare + (*pptmp)->size)) {`
183	262	markom	`if (!found_error) {`
184	261	markom	`fprintf (stderr, "ERROR: Overlapping memory area(s):\n");`
185	262	markom	`fprintf (stderr, "\taddr & %08x == %08x to %08x, size %08x, gran %iB\n", addr_mask, addr_compare, addr_compare \| bit_mask (size), size, granularity);`
186			`}`
187	261	markom	`found_error = 1;`
188	424	markom	`fprintf (stderr, "and\taddr & %08x == %08x to %08x, size %08x, gran %iB\n", (pptmp)->addr_mask, (pptmp)->addr_compare,`
189	261	markom	`(pptmp)->addr_compare \| (pptmp)->size_mask, (pptmp)->size, (pptmp)->granularity);`
190			`}`
191
192			`if (found_error)`
193			`exit (-1);`
194	537	markom
195	239	markom	`cur_area = pptmp = (struct dev_memarea )malloc(sizeof(struct dev_memarea));`
196	261	markom	`(*pptmp)->addr_mask = addr_mask;`
197			`(*pptmp)->addr_compare = addr_compare;`
198	239	markom	`(*pptmp)->size = size;`
199	261	markom	`(*pptmp)->size_mask = size_mask;`
200	239	markom	`(*pptmp)->granularity = granularity;`
201			`(*pptmp)->readfunc = readfunc;`
202			`(*pptmp)->writefunc = writefunc;`
203	479	markom	`(*pptmp)->log = 0;`
204	239	markom	`(*pptmp)->next = NULL;`
205	261	markom	`}`
206	221	markom
207	261	markom	`/* Register read and write function for a memory area.`
208			`Memory areas should be aligned. Memory area is rounded up to`
209			`fit the nearest 2^n aligment.`
210			`(used also by peripheral devices like 16450 UART etc.) */`
211			`void register_memoryarea(unsigned long addr,`
212			`unsigned long size, unsigned granularity,`
213			`unsigned long (readfunc)(unsigned long),`
214			`void (writefunc)(unsigned long, unsigned long))`
215			`{`
216			`unsigned long size_mask = bit_mask (size);`
217			`unsigned long addr_mask = ~size_mask;`
218			`register_memoryarea_mask (addr_mask, addr & addr_mask,`
219			`size_mask + 1, granularity,`
220			`readfunc, writefunc);`
221	30	lampret	`}`
222
223	261	markom
224	30	lampret	`/* Check if access is to registered area of memory. */`
225			`struct dev_memarea *verify_memoryarea(unsigned long addr)`
226			`{`
227	239	markom	`struct dev_memarea *ptmp;`
228	221	markom
229	239	markom	`/* Check list of registered devices. */`
230			`for(ptmp = dev_list; ptmp; ptmp = ptmp->next)`
231	261	markom	`if ((addr & ptmp->addr_mask) == ptmp->addr_compare)`
232	239	markom	`return cur_area = ptmp;`
233			`return cur_area = NULL;`
234	30	lampret	`}`
235
236	2	cvs	`/* Returns 32-bit values from mem array. Big endian version. */`
237	349	simons	`unsigned long read_mem(unsigned long memaddr,int* breakpoint)`
238			`{`
239			`unsigned long temp;`
240			`struct dev_memarea *dev;`
241
242	525	simons	`cur_vadd = memaddr;`
243	349	simons	`if (DEBUG_ENABLED)`
244			`breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr); / 28/05/01 CZ */`
245			`temp = evalsim_mem32(memaddr);`
246			`if (DEBUG_ENABLED)`
247			`breakpoint += CheckDebugUnit(DebugLoadData,temp); / MM170901 */`
248			`return temp;`
249	537	markom	`}`
250	349	simons
251			`/* Returns 32-bit values from mem array. Big endian version. */`
252	123	markom	`unsigned long eval_mem32(unsigned long memaddr,int* breakpoint)`
253	2	cvs	`{`
254	6	lampret
255	239	markom	`unsigned long temp;`
256			`struct dev_memarea *dev;`
257	123	markom
258	525	simons	`cur_vadd = memaddr;`
259	239	markom	`memaddr = simulate_dc_mmu_load(memaddr);`
260	458	simons	`if (pending.valid)`
261			`return 0;`
262	538	markom
263			`if (memaddr & 3) {`
264			`except_handle (EXCEPT_ALIGN, memaddr);`
265			`return 0;`
266			`}`
267
268	270	markom	`if (DEBUG_ENABLED)`
269			`breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr); / 28/05/01 CZ */`
270	239	markom	`temp = evalsim_mem32(memaddr);`
271	270	markom	`if (DEBUG_ENABLED)`
272			`breakpoint += CheckDebugUnit(DebugLoadData,temp); / MM170901 */`
273	239	markom	`return temp;`
274	66	lampret	`}`
275
276	349	simons	`/* Returns 32-bit values from mem array. Big endian version. */`
277			`unsigned long eval_insn(unsigned long memaddr,int* breakpoint)`
278			`{`
279			`unsigned long temp;`
280			`struct dev_memarea *dev;`
281
282	532	markom	`// memaddr = simulate_ic_mmu_fetch(memaddr);`
283	525	simons	`cur_vadd = pc;`
284	416	simons	`ic_simulate_fetch(memaddr);`
285	349	simons	`if (DEBUG_ENABLED)`
286			`breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr); / 28/05/01 CZ */`
287			`temp = evalsim_mem32(memaddr);`
288			`if (DEBUG_ENABLED)`
289			`breakpoint += CheckDebugUnit(DebugLoadData,temp); / MM170901 */`
290			`return temp;`
291			`}`
292
293	221	markom	`unsigned long evalsim_mem32(unsigned long memaddr)`
294	66	lampret	`{`
295	239	markom	`unsigned long temp;`
296	221	markom
297	239	markom	`if (verify_memoryarea(memaddr)) {`
298			`switch(cur_area->granularity) {`
299	538	markom	`case 4:`
300			`temp = cur_area->readfunc(memaddr);`
301			`mem_cycles += cur_area->delayr;`
302			`break;`
303	239	markom	`case 1:`
304			`temp = cur_area->readfunc(memaddr) << 24;`
305			`temp \|= cur_area->readfunc(memaddr + 1) << 16;`
306			`temp \|= cur_area->readfunc(memaddr + 2) << 8;`
307			`temp \|= cur_area->readfunc(memaddr + 3);`
308	537	markom	`mem_cycles += cur_area->delayr * 4;`
309	239	markom	`break;`
310			`case 2:`
311			`temp = cur_area->readfunc(memaddr) << 16;`
312			`temp \|= cur_area->readfunc(memaddr + 2);`
313	537	markom	`mem_cycles += cur_area->delayr * 2;`
314	239	markom	`break;`
315	426	markom	`}`
316			`if (cur_area->log)`
317			`fprintf (cur_area->log, "[%08x] -> read %08x\n", memaddr, temp);`
318	239	markom	`} else {`
319			`printf("EXCEPTION: read out of memory (32-bit access to %.8lx)\n", memaddr);`
320	525	simons	`except_handle(EXCEPT_BUSERR, cur_vadd);`
321	239	markom	`temp = 0;`
322			`}`
323			`return temp;`
324	2	cvs	`}`
325
326			`/* Returns 16-bit values from mem array. Big endian version. */`
327
328	123	markom	`unsigned short eval_mem16(unsigned long memaddr,int* breakpoint)`
329	2	cvs	`{`
330	239	markom	`unsigned short temp;`
331	525	simons	`cur_vadd = memaddr;`
332	239	markom	`memaddr = simulate_dc_mmu_load(memaddr);`
333	458	simons	`if (pending.valid)`
334			`return 0;`
335	538	markom
336			`if (memaddr & 1) {`
337			`except_handle (EXCEPT_ALIGN, memaddr);`
338			`return 0;`
339			`}`
340
341	270	markom	`if (DEBUG_ENABLED)`
342			`breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr); / 28/05/01 CZ */`
343	66	lampret
344	239	markom	`temp = evalsim_mem16(memaddr);`
345	270	markom	`if (DEBUG_ENABLED)`
346			`breakpoint += CheckDebugUnit(DebugLoadData,temp); / MM170901 */`
347	239	markom	`return temp;`
348	66	lampret	`}`
349
350	221	markom	`unsigned short evalsim_mem16(unsigned long memaddr)`
351	66	lampret	`{`
352	538	markom	`unsigned long temp;`
353	221	markom
354	239	markom	`if (verify_memoryarea(memaddr)) {`
355			`switch(cur_area->granularity) {`
356			`case 1:`
357			`temp = cur_area->readfunc(memaddr) << 8;`
358			`temp \|= cur_area->readfunc(memaddr + 1);`
359	537	markom	`mem_cycles += cur_area->delayr * 2;`
360	239	markom	`break;`
361			`case 2:`
362			`temp = cur_area->readfunc(memaddr);`
363	537	markom	`mem_cycles += cur_area->delayr;`
364	239	markom	`break;`
365			`case 4:`
366	538	markom	`temp = evalsim_mem32 (memaddr & ~3ul);`
367			`if (memaddr & 2)`
368			`temp &= 0xffff;`
369			`else`
370			`temp >>= 16;`
371	239	markom	`break;`
372			`}`
373	426	markom	`if (cur_area->log)`
374			`fprintf (cur_area->log, "[%08x] -> read %08x\n", memaddr, temp);`
375	239	markom	`} else {`
376			`printf("EXCEPTION: read out of memory (16-bit access to %.8lx)\n", memaddr);`
377	525	simons	`except_handle(EXCEPT_BUSERR, cur_vadd);`
378	239	markom	`temp = 0;`
379			`}`
380			`return temp;`
381	2	cvs	`}`
382
383
384	6	lampret	`/* Returns 8-bit values from mem array. */`
385	2	cvs
386	123	markom	`unsigned char eval_mem8(unsigned long memaddr,int* breakpoint)`
387	221	markom	`{`
388	538	markom	`unsigned long temp;`
389	525	simons	`cur_vadd = memaddr;`
390	239	markom	`memaddr = simulate_dc_mmu_load(memaddr);`
391	458	simons	`if (pending.valid)`
392			`return 0;`
393	270	markom	`if (DEBUG_ENABLED)`
394			`breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr); / 28/05/01 CZ */`
395	6	lampret
396	239	markom	`temp = evalsim_mem8(memaddr);`
397	270	markom	`if (DEBUG_ENABLED)`
398			`breakpoint += CheckDebugUnit(DebugLoadData,temp); / MM170901 */`
399	239	markom	`return temp;`
400	66	lampret	`}`
401
402	221	markom	`unsigned char evalsim_mem8(unsigned long memaddr)`
403			`{`
404	538	markom	`unsigned long temp;`
405	123	markom
406	239	markom	`if (verify_memoryarea(memaddr)) {`
407			`switch(cur_area->granularity) {`
408			`case 1:`
409			`temp = cur_area->readfunc(memaddr);`
410	537	markom	`mem_cycles += cur_area->delayr;`
411	239	markom	`break;`
412			`case 2:`
413	538	markom	`temp = evalsim_mem16 (memaddr & ~1ul);`
414			`if (memaddr & 1)`
415			`temp &= 0xff;`
416			`else`
417			`temp >>= 8;`
418			`break;`
419	239	markom	`case 4:`
420	538	markom	`temp = evalsim_mem32 (memaddr & ~3ul);`
421			`temp >>= 8 * (3 - (memaddr & 3));`
422			`temp &= 0xff;`
423	239	markom	`break;`
424			`}`
425	426	markom	`if (cur_area->log)`
426			`fprintf (cur_area->log, "[%08x] -> read %08x\n", memaddr, temp);`
427	239	markom	`} else {`
428			`printf("EXCEPTION: read out of memory (8-bit access to %.8lx)\n", memaddr);`
429	525	simons	`except_handle(EXCEPT_BUSERR, cur_vadd);`
430	239	markom	`temp = 0;`
431			`}`
432			`return temp;`
433	2	cvs	`}`
434
435			`/* Set mem, 32-bit. Big endian version. */`
436
437	123	markom	`void set_mem32(unsigned long memaddr, unsigned long value,int* breakpoint)`
438	2	cvs	`{`
439	525	simons	`cur_vadd = memaddr;`
440	239	markom	`memaddr = simulate_dc_mmu_store(memaddr);`
441	221	markom
442	437	simons	`/* If we produced exception don't set anything */`
443			`if (pending.valid == 1)`
444			`return;`
445
446	538	markom	`if (memaddr & 3) {`
447			`except_handle (EXCEPT_ALIGN, memaddr);`
448			`return;`
449			`}`
450
451	270	markom	`if (DEBUG_ENABLED) {`
452			`breakpoint += CheckDebugUnit(DebugStoreAddress,memaddr); / 28/05/01 CZ */`
453			`*breakpoint += CheckDebugUnit(DebugStoreData,value);`
454			`}`
455	123	markom
456	239	markom	`setsim_mem32(memaddr, value);`
457	66	lampret	`}`
458
459			`void setsim_mem32(unsigned long memaddr, unsigned long value)`
460			`{`
461	239	markom	`struct dev_memarea *dev;`
462	66	lampret
463	239	markom	`if (verify_memoryarea(memaddr)) {`
464	426	markom	`if (cur_area->log)`
465			`fprintf (cur_area->log, "[%08x] -> write %08x\n", memaddr, value);`
466	239	markom	`switch(cur_area->granularity) {`
467	538	markom	`case 4:`
468			`cur_area->writefunc(memaddr, value);`
469			`mem_cycles += cur_area->delayw;`
470			`break;`
471	239	markom	`case 1:`
472	251	erez	`cur_area->writefunc(memaddr , (value >> 24) & 0xFF);`
473	239	markom	`cur_area->writefunc(memaddr + 1, (value >> 16) & 0xFF);`
474	251	erez	`cur_area->writefunc(memaddr + 2, (value >> 8) & 0xFF);`
475			`cur_area->writefunc(memaddr + 3, (value ) & 0xFF);`
476	537	markom	`mem_cycles += cur_area->delayw * 4;`
477	239	markom	`break;`
478			`case 2:`
479			`cur_area->writefunc(memaddr, (value >> 16) & 0xFFFF);`
480			`cur_area->writefunc(memaddr + 2, value & 0xFFFF);`
481	537	markom	`mem_cycles += cur_area->delayw * 2;`
482	239	markom	`break;`
483	242	markom	`}`
484	239	markom	`} else {`
485			`printf("EXCEPTION: write out of memory (32-bit access to %.8lx)\n", memaddr);`
486	525	simons	`except_handle(EXCEPT_BUSERR, cur_vadd);`
487	239	markom	`}`
488	2	cvs	`}`
489
490			`/* Set mem, 16-bit. Big endian version. */`
491
492	123	markom	`void set_mem16(unsigned long memaddr, unsigned short value,int* breakpoint)`
493	2	cvs	`{`
494	525	simons	`cur_vadd = memaddr;`
495	239	markom	`memaddr = simulate_dc_mmu_store(memaddr);`
496	221	markom
497	437	simons	`/* If we produced exception don't set anything */`
498			`if (pending.valid == 1)`
499			`return;`
500	538	markom

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[/] [or1k/] [tags/] [nog_patch_47/] [or1ksim/] [cpu/] [common/] [abstract.c] - Blame information for rev 538