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[/] [or1k/] [tags/] [nog_patch_42/] [or1ksim/] [cpu/] [common/] [abstract.c] - Blame information for rev 611

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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"
#include "support/profile.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 immu_translate(virtaddr, write_access);
  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. */
 
static inline 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. */
 
static inline unsigned long simulate_dc_mmu_load(unsigned long virtaddr)
{
  if (config.dc.tagtype == CT_NONE)
    return dmmu_translate(virtaddr, 0);
  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. */
 
static inline unsigned long simulate_dc_mmu_store(unsigned long virtaddr)
{
  if (config.dc.tagtype == CT_NONE)
    return dmmu_translate(virtaddr, 0);
  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. */
inline struct dev_memarea *verify_memoryarea(unsigned long addr)
{
  struct dev_memarea *ptmp;
 
  /* Check cached value first */
  if (cur_area && (addr & cur_area->addr_mask) == (cur_area->addr_compare & cur_area->addr_mask))
    return cur_area;
 
  /* When mc is enabled, we must check valid also, otherwise we assume it is nonzero */
  IFF (config.mc.enabled) {
    /* Check list of registered devices. */
    for(ptmp = dev_list; ptmp; ptmp = ptmp->next)
      if ((addr & ptmp->addr_mask) == (ptmp->addr_compare & ptmp->addr_mask) && ptmp->valid)
        return cur_area = ptmp;
  } else {
    /* Check list of registered devices. */
    for(ptmp = dev_list; ptmp; ptmp = ptmp->next)
      if ((addr & ptmp->addr_mask) == (ptmp->addr_compare & ptmp->addr_mask))
        return cur_area = ptmp;
  }
  return cur_area = NULL;
}
 
inline 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;
    }
  }
  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;
    }
  }
  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;
    }
  }
  return temp;
}
 
/* 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 (config.debug.enabled)
    *breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr); /* 28/05/01 CZ */
  temp = evalsim_mem32(memaddr);
  if (!cur_area) {
    printf("EXCEPTION: read out of memory (16-bit access to %.8lx)\n", memaddr);
    except_handle(EXCEPT_BUSERR, cur_vadd);
    temp = 0;
  }
 
  if (!pending.valid && cur_area->log)
    fprintf (cur_area->log, "[%08x] -> read %08x\n", memaddr, temp);
  if (config.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;
 
  if (config.sim.mprofile)
    mprofile (memaddr, MPROF_32 | MPROF_READ);
 
  if (memaddr & 3) {
    except_handle (EXCEPT_ALIGN, memaddr);
    return 0;
  }
 
  cur_vadd = memaddr;
  memaddr = simulate_dc_mmu_load(memaddr);
  if (pending.valid)
    return 0;
 
  if (config.debug.enabled)
    *breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr); /* 28/05/01 CZ */
  temp = evalsim_mem32(memaddr);
  if (!cur_area) {
    printf("EXCEPTION: read out of memory (32-bit access to %.8lx)\n", memaddr);
    except_handle(EXCEPT_BUSERR, cur_vadd);
    temp = 0;
  }
 
  if (!pending.valid && cur_area->log)
    fprintf (cur_area->log, "[%08x] -> read %08x\n", memaddr, temp);
  if (config.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;
 
  if (config.sim.mprofile)
    mprofile (memaddr, MPROF_32 | MPROF_FETCH);
//  memaddr = simulate_ic_mmu_fetch(memaddr);
  cur_vadd = pc;
  IFF (config.ic.enabled) ic_simulate_fetch(memaddr);
  if (config.debug.enabled)
    *breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr); /* 28/05/01 CZ */
  temp = evalsim_mem32(memaddr);
  if (!cur_area) {
    printf("EXCEPTION: read out of memory (32-bit access to %.8lx)\n", memaddr);
    except_handle(EXCEPT_BUSERR, cur_vadd);
    temp = 0;
  }
 
  if (!pending.valid && cur_area->log)
    fprintf (cur_area->log, "[%08x] -> read %08x\n", memaddr, temp);
  if (config.debug.enabled)
    *breakpoint += CheckDebugUnit(DebugLoadData,temp);  /* MM170901 */
  return temp;
}
 
/* Returns 16-bit values from mem array. Big endian version. */
 
unsigned short eval_mem16(unsigned long memaddr,int* breakpoint)
{
  unsigned short temp;
 
  if (config.sim.mprofile)
    mprofile (memaddr, MPROF_16 | MPROF_READ);
 
  if (memaddr & 1) {
    except_handle (EXCEPT_ALIGN, memaddr);
    return 0;
  }
 
  cur_vadd = memaddr;
  memaddr = simulate_dc_mmu_load(memaddr);
  if (pending.valid)
    return 0;
 
  if (config.debug.enabled)
    *breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr); /* 28/05/01 CZ */
 
  temp = evalsim_mem16(memaddr);
  if (!cur_area) {
    printf("EXCEPTION: read out of memory (16-bit access to %.8lx)\n", memaddr);
    except_handle(EXCEPT_BUSERR, cur_vadd);
    temp = 0;
  }
 
  if (!pending.valid && cur_area->log)
    fprintf (cur_area->log, "[%08x] -> read %08x\n", memaddr, temp);
  if (config.debug.enabled)
    *breakpoint += CheckDebugUnit(DebugLoadData,temp);  /* MM170901 */
  return temp;
}
 
/* Returns 8-bit values from mem array. */
 
unsigned char eval_mem8(unsigned long memaddr,int* breakpoint)
{
  unsigned long temp;
 
  if (config.sim.mprofile)
    mprofile (memaddr, MPROF_8 | MPROF_READ);
 
  cur_vadd = memaddr;
  memaddr = simulate_dc_mmu_load(memaddr);
  if (pending.valid)
    return 0;
 
  if (config.debug.enabled)
    *breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr);  /* 28/05/01 CZ */
 
  temp = evalsim_mem8(memaddr);
  if (!cur_area) {
    printf("EXCEPTION: read out of memory (8-bit access to %.8lx)\n", memaddr);
    except_handle(EXCEPT_BUSERR, cur_vadd);
    temp = 0;
  }
 
  if (!pending.valid && cur_area->log)
    fprintf (cur_area->log, "[%08x] -> read %08x\n", memaddr, temp);
  if (config.debug.enabled)
    *breakpoint += CheckDebugUnit(DebugLoadData,temp);  /* MM170901 */
  return temp;
}
 
void setsim_mem32(unsigned long memaddr, unsigned long value)
{
  struct dev_memarea *dev;
 
  if (verify_memoryarea(memaddr)) {
    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);
  }
}
 
void setsim_mem16(unsigned long memaddr, unsigned short value)
{
  unsigned long temp;
  if (verify_memoryarea(memaddr)) {
    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) ? 16 : 0);
      temp |= (unsigned long)(value & 0xffff) << ((memaddr & 2) ? 0 : 16);
      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);
  }
}
 
void setsim_mem8(unsigned long memaddr, unsigned char value)
{
  unsigned long temp;
  if (verify_memoryarea(memaddr)) {
    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) ? 8 : 0);
      temp |= (unsigned short)(value & 0xff) << ((memaddr & 1) ? 0 : 8);
      setsim_mem16 (memaddr & ~1ul, temp);
      break;
    case 4:
      temp = evalsim_mem32 (memaddr & ~3ul);
      temp &= ~(0xff << (8 * (3 - (memaddr & 3))));
      temp |= (unsigned long)(value & 0xff) << (8 * (3 - (memaddr & 3)));
      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);
  }
}
 
/* Set mem, 32-bit. Big endian version. */
 
void set_mem32(unsigned long memaddr, unsigned long value,int* breakpoint)
{
  if (config.sim.mprofile)
    mprofile (memaddr, MPROF_32 | MPROF_WRITE);
 
  if (memaddr & 3) {
    except_handle (EXCEPT_ALIGN, memaddr);
    return;
  }
 
  cur_vadd = memaddr;
  memaddr = simulate_dc_mmu_store(memaddr);
  /* If we produced exception don't set anything */
  if (pending.valid)
    return;
 
  if (config.debug.enabled) {
    *breakpoint += CheckDebugUnit(DebugStoreAddress,memaddr);  /* 28/05/01 CZ */
    *breakpoint += CheckDebugUnit(DebugStoreData,value);
  }
 
  if (cur_area->log)
    fprintf (cur_area->log, "[%08x] -> write %08x\n", memaddr, value);
 
  setsim_mem32(memaddr, value);
}
 
/* Set mem, 16-bit. Big endian version. */
 
void set_mem16(unsigned long memaddr, unsigned short value,int* breakpoint)
{
  if (config.sim.mprofile)
    mprofile (memaddr, MPROF_16 | MPROF_WRITE);
 
  if (memaddr & 1) {
    except_handle (EXCEPT_ALIGN, memaddr);
    return;
  }
 
  cur_vadd = memaddr;
  memaddr = simulate_dc_mmu_store(memaddr);
  /* If we produced exception don't set anything */
  if (pending.valid)
    return;
 
  if (config.debug.enabled) {
    *breakpoint += CheckDebugUnit(DebugStoreAddress,memaddr);  /* 28/05/01 CZ */
    *breakpoint += CheckDebugUnit(DebugStoreData,value);
  }
 
  if (cur_area->log)
    fprintf (cur_area->log, "[%08x] -> write %08x\n", memaddr, value);
 
  setsim_mem16(memaddr, value);
}
 
/* Set mem, 8-bit. */
 
void set_mem8(unsigned long memaddr, unsigned char value,int* breakpoint)
{
  if (config.sim.mprofile)
    mprofile (memaddr, MPROF_8 | MPROF_WRITE);
 
  cur_vadd = memaddr;
  memaddr = simulate_dc_mmu_store(memaddr);
  /* If we produced exception don't set anything */
  if (pending.valid) return;
 
  if (config.debug.enabled) {
    *breakpoint += CheckDebugUnit(DebugStoreAddress,memaddr);  /* 28/05/01 CZ */
    *breakpoint += CheckDebugUnit(DebugStoreData,value);
  }
 
  if (cur_area->log)
    fprintf (cur_area->log, "[%08x] -> write %08x\n", memaddr, value);
 
  setsim_mem8(memaddr, value);
}
 
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->chip_select = ce;
      cur_area->valid = 1;
      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 = NULL;
      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);
    cur_area->misc = memory_needed;
    cur_area->chip_select = 0;
    cur_area->valid = 1;
    cur_area->delayw = 1;
    cur_area->delayr = 1;
    cur_area->log = NULL;
    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;
 
    /* If this mem area is not for memory chip under MC control
       then this area is valid all the time */
    if (ptmp->readfunc != &simmem_read_word) {
      ptmp->valid = 1;
      ptmp->chip_select = -1;
    }
  }
}
 
/* 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	547	markom	`#include "support/profile.h"`
43	2	cvs
44			`extern unsigned long reg[];`
45	138	markom	`extern char *disassembled;`
46	2	cvs
47	28	lampret	`/* This is an abstract+physical memory array rather than only physical`
48			`memory array */`
49	538	markom	`static unsigned long *simmem32;`
50	2	cvs
51	30	lampret	`/* Pointer to memory area descriptions that are assigned to individual`
52			`peripheral devices. */`
53			`struct dev_memarea *dev_list;`
54
55	221	markom	`/* Temporary variable to increase speed. */`
56			`struct dev_memarea *cur_area;`
57
58	525	simons	`/* Virtual address of current access. */`
59			`unsigned long cur_vadd;`
60
61	537	markom	`/* Temporary variable, which specifies how many cycles did the memory acces require */`
62			`extern int mem_cycles;`
63
64	349	simons	`/* It returns physical address. */`
65	430	markom	`inline unsigned long translate_vrt_to_phy_add(unsigned long virtaddr, int write_access)`
66	77	lampret	`{`
67	429	markom	`if (config.ic.tagtype == CT_NONE)`
68	572	simons	`return immu_translate(virtaddr, write_access);`
69	239	markom	`else`
70	429	markom	`if (config.ic.tagtype == CT_VIRTUAL) {`
71	430	markom	`return immu_translate(virtaddr, write_access);`
72	239	markom	`}`
73	429	markom	`else if (config.dc.tagtype == CT_PHYSICAL) {`
74	430	markom	`unsigned long phyaddr = immu_translate(virtaddr, write_access);`
75	239	markom	`return phyaddr;`
76			`}`
77			`else {`
78			`printf("INTERNAL ERROR: Unknown insn cache type.\n");`
79			`cont_run = 0;`
80			`}`
81	221	markom
82	239	markom	`return -1;`
83	77	lampret	`}`
84
85	349	simons	`/* Calls IMMU translation routines before simulating insn`
86			`cache for virtually indexed insn cache or after simulating insn cache`
87			`for physically indexed insn cache. It returns physical address. */`
88
89	574	markom	`static inline unsigned long simulate_ic_mmu_fetch(unsigned long virtaddr)`
90	349	simons	`{`
91
92			`unsigned long phyaddr;`
93
94	430	markom	`if ((phyaddr = translate_vrt_to_phy_add(virtaddr, 0)) != -1) {`
95	349	simons	`ic_simulate_fetch(phyaddr);`
96			`return phyaddr;`
97			`}`
98			`else {`
99			`printf("INTERNAL ERROR: Unknown insn cache type.\n");`
100			`cont_run = 0;`
101			`}`
102			`return -1;`
103			`}`
104
105	77	lampret	`/* Calls DMMU translation routines (load cycles) before simulating data`
106	239	markom	`cache for virtually indexed data cache or after simulating data cache`
107			`for physically indexed data cache. It returns physical address. */`
108	6	lampret
109	574	markom	`static inline unsigned long simulate_dc_mmu_load(unsigned long virtaddr)`
110	6	lampret	`{`
111	429	markom	`if (config.dc.tagtype == CT_NONE)`
112	572	simons	`return dmmu_translate(virtaddr, 0);`
113	239	markom	`else`
114	429	markom	`if (config.dc.tagtype == CT_VIRTUAL) {`
115	327	lampret	`dc_simulate_read(virtaddr);`
116	430	markom	`return dmmu_translate(virtaddr, 0);`
117	239	markom	`}`
118	429	markom	`else if (config.dc.tagtype == CT_PHYSICAL) {`
119	430	markom	`unsigned long phyaddr = dmmu_translate(virtaddr, 0);`
120	327	lampret	`dc_simulate_read(phyaddr);`
121	239	markom	`return phyaddr;`
122			`}`
123			`else {`
124	327	lampret	`printf("INTERNAL ERROR: Unknown data cache type.\n");`
125	239	markom	`cont_run = 0;`
126			`}`
127	221	markom
128	239	markom	`return -1;`
129	6	lampret	`}`
130
131	77	lampret	`/* Calls DMMU translation routines (store cycles) before simulating data`
132	6	lampret	`cache for virtually indexed data cache or after simulating data cache`
133			`for physically indexed data cache. It returns physical address. */`
134
135	574	markom	`static inline unsigned long simulate_dc_mmu_store(unsigned long virtaddr)`
136	6	lampret	`{`
137	429	markom	`if (config.dc.tagtype == CT_NONE)`
138	572	simons	`return dmmu_translate(virtaddr, 0);`
139	239	markom	`else`
140	429	markom	`if (config.dc.tagtype == CT_VIRTUAL) {`
141	239	markom	`dc_simulate_write(virtaddr);`
142	430	markom	`return dmmu_translate(virtaddr, 1);`
143	239	markom	`}`
144	429	markom	`else if (config.dc.tagtype == CT_PHYSICAL) {`
145	430	markom	`unsigned long phyaddr = dmmu_translate(virtaddr, 1);`
146	239	markom	`dc_simulate_write(phyaddr);`
147			`return phyaddr;`
148			`}`
149			`else {`
150			`printf("INTERNAL ERROR: Unknown data cache type.\n");`
151			`cont_run = 0;`
152			`}`
153	221	markom
154	239	markom	`return -1;`
155	6	lampret	`}`
156
157	261	markom	`/* Calculates bit mask to fit the data */`
158			`unsigned long bit_mask (unsigned long data) {`
159			`int i = 0;`
160			`data--;`
161	382	markom	`while (data >> i)`
162	261	markom	`data \|= 1 << i++;`
163			`return data;`
164			`}`
165
166			`/* Register read and write function for a memory area.`
167			`addr is inside the area, if addr & addr_mask == addr_compare`
168			`(used also by peripheral devices like 16450 UART etc.) */`
169			`void register_memoryarea_mask(unsigned long addr_mask, unsigned long addr_compare,`
170			`unsigned long size, unsigned granularity,`
171	239	markom	`unsigned long (readfunc)(unsigned long),`
172	261	markom	`void (writefunc)(unsigned long, unsigned long))`
173	30	lampret	`{`
174	239	markom	`struct dev_memarea **pptmp;`
175	261	markom	`unsigned long size_mask = bit_mask (size);`
176			`int found_error = 0;`
177			`addr_compare &= addr_mask;`
178	221	markom
179	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);`
180	239	markom	`/* Go to the end of the list. */`
181	261	markom	`for(pptmp = &dev_list; pptmp; pptmp = &(pptmp)->next)`
182			`if ((addr_compare >= (pptmp)->addr_compare) && (addr_compare < (pptmp)->addr_compare + (*pptmp)->size)`
183			`\|\| (addr_compare + size > (pptmp)->addr_compare) && (addr_compare < (pptmp)->addr_compare + (*pptmp)->size)) {`
184	262	markom	`if (!found_error) {`
185	261	markom	`fprintf (stderr, "ERROR: Overlapping memory area(s):\n");`
186	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);`
187			`}`
188	261	markom	`found_error = 1;`
189	424	markom	`fprintf (stderr, "and\taddr & %08x == %08x to %08x, size %08x, gran %iB\n", (pptmp)->addr_mask, (pptmp)->addr_compare,`
190	261	markom	`(pptmp)->addr_compare \| (pptmp)->size_mask, (pptmp)->size, (pptmp)->granularity);`
191			`}`
192
193			`if (found_error)`
194			`exit (-1);`
195	537	markom
196	239	markom	`cur_area = pptmp = (struct dev_memarea )malloc(sizeof(struct dev_memarea));`
197	261	markom	`(*pptmp)->addr_mask = addr_mask;`
198			`(*pptmp)->addr_compare = addr_compare;`
199	239	markom	`(*pptmp)->size = size;`
200	261	markom	`(*pptmp)->size_mask = size_mask;`
201	239	markom	`(*pptmp)->granularity = granularity;`
202			`(*pptmp)->readfunc = readfunc;`
203			`(*pptmp)->writefunc = writefunc;`
204	479	markom	`(*pptmp)->log = 0;`
205	239	markom	`(*pptmp)->next = NULL;`
206	261	markom	`}`
207	221	markom
208	261	markom	`/* Register read and write function for a memory area.`
209			`Memory areas should be aligned. Memory area is rounded up to`
210			`fit the nearest 2^n aligment.`
211			`(used also by peripheral devices like 16450 UART etc.) */`
212			`void register_memoryarea(unsigned long addr,`
213			`unsigned long size, unsigned granularity,`
214			`unsigned long (readfunc)(unsigned long),`
215			`void (writefunc)(unsigned long, unsigned long))`
216			`{`
217			`unsigned long size_mask = bit_mask (size);`
218			`unsigned long addr_mask = ~size_mask;`
219			`register_memoryarea_mask (addr_mask, addr & addr_mask,`
220			`size_mask + 1, granularity,`
221			`readfunc, writefunc);`
222	30	lampret	`}`
223
224	261	markom
225	30	lampret	`/* Check if access is to registered area of memory. */`
226	560	markom	`inline struct dev_memarea *verify_memoryarea(unsigned long addr)`
227	30	lampret	`{`
228	239	markom	`struct dev_memarea *ptmp;`
229	221	markom
230	560	markom	`/* Check cached value first */`
231			`if (cur_area && (addr & cur_area->addr_mask) == (cur_area->addr_compare & cur_area->addr_mask))`
232			`return cur_area;`
233
234			`/* When mc is enabled, we must check valid also, otherwise we assume it is nonzero */`
235			`IFF (config.mc.enabled) {`
236			`/* Check list of registered devices. */`
237			`for(ptmp = dev_list; ptmp; ptmp = ptmp->next)`
238			`if ((addr & ptmp->addr_mask) == (ptmp->addr_compare & ptmp->addr_mask) && ptmp->valid)`
239			`return cur_area = ptmp;`
240			`} else {`
241			`/* Check list of registered devices. */`
242			`for(ptmp = dev_list; ptmp; ptmp = ptmp->next)`
243			`if ((addr & ptmp->addr_mask) == (ptmp->addr_compare & ptmp->addr_mask))`
244			`return cur_area = ptmp;`
245			`}`
246	239	markom	`return cur_area = NULL;`
247	30	lampret	`}`
248
249	560	markom	`inline unsigned long evalsim_mem32(unsigned long memaddr)`
250			`{`
251			`unsigned long temp;`
252
253			`if (verify_memoryarea(memaddr)) {`
254			`switch(cur_area->granularity) {`
255			`case 4:`
256			`temp = cur_area->readfunc(memaddr);`
257			`mem_cycles += cur_area->delayr;`
258			`break;`
259			`case 1:`
260			`temp = cur_area->readfunc(memaddr) << 24;`
261			`temp \|= cur_area->readfunc(memaddr + 1) << 16;`
262			`temp \|= cur_area->readfunc(memaddr + 2) << 8;`
263			`temp \|= cur_area->readfunc(memaddr + 3);`
264			`mem_cycles += cur_area->delayr * 4;`
265			`break;`
266			`case 2:`
267			`temp = cur_area->readfunc(memaddr) << 16;`
268			`temp \|= cur_area->readfunc(memaddr + 2);`
269			`mem_cycles += cur_area->delayr * 2;`
270			`break;`
271			`}`
272			`}`
273			`return temp;`
274			`}`
275
276			`unsigned short evalsim_mem16(unsigned long memaddr)`
277			`{`
278			`unsigned long temp;`
279
280			`if (verify_memoryarea(memaddr)) {`
281			`switch(cur_area->granularity) {`
282			`case 1:`
283			`temp = cur_area->readfunc(memaddr) << 8;`
284			`temp \|= cur_area->readfunc(memaddr + 1);`
285			`mem_cycles += cur_area->delayr * 2;`
286			`break;`
287			`case 2:`
288			`temp = cur_area->readfunc(memaddr);`
289			`mem_cycles += cur_area->delayr;`
290			`break;`
291			`case 4:`
292			`temp = evalsim_mem32 (memaddr & ~3ul);`
293			`if (memaddr & 2)`
294			`temp &= 0xffff;`
295			`else`
296			`temp >>= 16;`
297			`break;`
298			`}`
299			`}`
300			`return temp;`
301			`}`
302
303			`unsigned char evalsim_mem8(unsigned long memaddr)`
304			`{`
305			`unsigned long temp;`
306
307			`if (verify_memoryarea(memaddr)) {`
308			`switch(cur_area->granularity) {`
309			`case 1:`
310			`temp = cur_area->readfunc(memaddr);`
311			`mem_cycles += cur_area->delayr;`
312			`break;`
313			`case 2:`
314			`temp = evalsim_mem16 (memaddr & ~1ul);`
315			`if (memaddr & 1)`
316			`temp &= 0xff;`
317			`else`
318			`temp >>= 8;`
319			`break;`
320			`case 4:`
321			`temp = evalsim_mem32 (memaddr & ~3ul);`
322			`temp >>= 8 * (3 - (memaddr & 3));`
323			`temp &= 0xff;`
324			`break;`
325			`}`
326			`}`
327			`return temp;`
328			`}`
329
330	2	cvs	`/* Returns 32-bit values from mem array. Big endian version. */`
331	349	simons	`unsigned long read_mem(unsigned long memaddr,int* breakpoint)`
332			`{`
333			`unsigned long temp;`
334			`struct dev_memarea *dev;`
335
336	525	simons	`cur_vadd = memaddr;`
337	550	markom	`if (config.debug.enabled)`
338	349	simons	`breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr); / 28/05/01 CZ */`
339			`temp = evalsim_mem32(memaddr);`
340	611	simons	`if (!cur_area) {`
341			`printf("EXCEPTION: read out of memory (16-bit access to %.8lx)\n", memaddr);`
342			`except_handle(EXCEPT_BUSERR, cur_vadd);`
343			`temp = 0;`
344			`}`
345
346	599	simons	`if (!pending.valid && cur_area->log)`
347	587	markom	`fprintf (cur_area->log, "[%08x] -> read %08x\n", memaddr, temp);`
348	550	markom	`if (config.debug.enabled)`
349	349	simons	`breakpoint += CheckDebugUnit(DebugLoadData,temp); / MM170901 */`
350			`return temp;`
351	537	markom	`}`
352	349	simons
353			`/* Returns 32-bit values from mem array. Big endian version. */`
354	123	markom	`unsigned long eval_mem32(unsigned long memaddr,int* breakpoint)`
355	2	cvs	`{`
356	6	lampret
357	239	markom	`unsigned long temp;`
358			`struct dev_memarea *dev;`
359	123	markom
360	547	markom	`if (config.sim.mprofile)`
361			`mprofile (memaddr, MPROF_32 \| MPROF_READ);`
362
363	538	markom	`if (memaddr & 3) {`
364			`except_handle (EXCEPT_ALIGN, memaddr);`
365			`return 0;`
366			`}`
367	557	markom
368	574	markom	`cur_vadd = memaddr;`
369			`memaddr = simulate_dc_mmu_load(memaddr);`
370			`if (pending.valid)`
371			`return 0;`
372
373	550	markom	`if (config.debug.enabled)`
374	270	markom	`breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr); / 28/05/01 CZ */`
375	239	markom	`temp = evalsim_mem32(memaddr);`
376	611	simons	`if (!cur_area) {`
377			`printf("EXCEPTION: read out of memory (32-bit access to %.8lx)\n", memaddr);`
378			`except_handle(EXCEPT_BUSERR, cur_vadd);`
379			`temp = 0;`
380			`}`
381
382	599	simons	`if (!pending.valid && cur_area->log)`
383	587	markom	`fprintf (cur_area->log, "[%08x] -> read %08x\n", memaddr, temp);`
384	550	markom	`if (config.debug.enabled)`
385	270	markom	`breakpoint += CheckDebugUnit(DebugLoadData,temp); / MM170901 */`
386	239	markom	`return temp;`
387	66	lampret	`}`
388
389	349	simons	`/* Returns 32-bit values from mem array. Big endian version. */`
390			`unsigned long eval_insn(unsigned long memaddr,int* breakpoint)`
391			`{`
392			`unsigned long temp;`
393			`struct dev_memarea *dev;`
394
395	547	markom	`if (config.sim.mprofile)`
396			`mprofile (memaddr, MPROF_32 \| MPROF_FETCH);`
397	532	markom	`// memaddr = simulate_ic_mmu_fetch(memaddr);`
398	525	simons	`cur_vadd = pc;`
399	560	markom	`IFF (config.ic.enabled) ic_simulate_fetch(memaddr);`
400	550	markom	`if (config.debug.enabled)`
401	349	simons	`breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr); / 28/05/01 CZ */`
402			`temp = evalsim_mem32(memaddr);`
403	611	simons	`if (!cur_area) {`
404			`printf("EXCEPTION: read out of memory (32-bit access to %.8lx)\n", memaddr);`
405			`except_handle(EXCEPT_BUSERR, cur_vadd);`
406			`temp = 0;`
407			`}`
408
409	599	simons	`if (!pending.valid && cur_area->log)`
410	587	markom	`fprintf (cur_area->log, "[%08x] -> read %08x\n", memaddr, temp);`
411	550	markom	`if (config.debug.enabled)`
412	349	simons	`breakpoint += CheckDebugUnit(DebugLoadData,temp); / MM170901 */`
413			`return temp;`
414			`}`
415
416	2	cvs	`/* Returns 16-bit values from mem array. Big endian version. */`
417
418	123	markom	`unsigned short eval_mem16(unsigned long memaddr,int* breakpoint)`
419	2	cvs	`{`
420	239	markom	`unsigned short temp;`
421	547	markom
422			`if (config.sim.mprofile)`
423			`mprofile (memaddr, MPROF_16 \| MPROF_READ);`
424
425	538	markom	`if (memaddr & 1) {`
426			`except_handle (EXCEPT_ALIGN, memaddr);`
427			`return 0;`
428			`}`
429	574	markom
430			`cur_vadd = memaddr;`
431			`memaddr = simulate_dc_mmu_load(memaddr);`
432			`if (pending.valid)`
433			`return 0;`
434
435	550	markom	`if (config.debug.enabled)`
436	270	markom	`breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr); / 28/05/01 CZ */`
437	66	lampret
438	239	markom	`temp = evalsim_mem16(memaddr);`
439	611	simons	`if (!cur_area) {`
440			`printf("EXCEPTION: read out of memory (16-bit access to %.8lx)\n", memaddr);`
441			`except_handle(EXCEPT_BUSERR, cur_vadd);`
442			`temp = 0;`
443			`}`
444
445	599	simons	`if (!pending.valid && cur_area->log)`
446	587	markom	`fprintf (cur_area->log, "[%08x] -> read %08x\n", memaddr, temp);`
447	550	markom	`if (config.debug.enabled)`
448	270	markom	`breakpoint += CheckDebugUnit(DebugLoadData,temp); / MM170901 */`
449	239	markom	`return temp;`
450	66	lampret	`}`
451
452	6	lampret	`/* Returns 8-bit values from mem array. */`
453	2	cvs
454	123	markom	`unsigned char eval_mem8(unsigned long memaddr,int* breakpoint)`
455	221	markom	`{`
456	538	markom	`unsigned long temp;`
457	547	markom
458			`if (config.sim.mprofile)`
459			`mprofile (memaddr, MPROF_8 \| MPROF_READ);`
460
461	525	simons	`cur_vadd = memaddr;`
462	574	markom	`memaddr = simulate_dc_mmu_load(memaddr);`
463	458	simons	`if (pending.valid)`
464			`return 0;`
465	574	markom
466	550	markom	`if (config.debug.enabled)`
467	270	markom	`breakpoint += CheckDebugUnit(DebugLoadAddress,memaddr); / 28/05/01 CZ */`
468	6	lampret
469	239	markom	`temp = evalsim_mem8(memaddr);`
470	611	simons	`if (!cur_area) {`
471			`printf("EXCEPTION: read out of memory (8-bit access to %.8lx)\n", memaddr);`
472			`except_handle(EXCEPT_BUSERR, cur_vadd);`
473			`temp = 0;`
474			`}`
475
476	599	simons	`if (!pending.valid && cur_area->log)`
477	587	markom	`fprintf (cur_area->log, "[%08x] -> read %08x\n", memaddr, temp);`
478	550	markom	`if (config.debug.enabled)`
479	270	markom	`breakpoint += CheckDebugUnit(DebugLoadData,temp); / MM170901 */`
480	239	markom	`return temp;`
481	66	lampret	`}`
482
483			`void setsim_mem32(unsigned long memaddr, unsigned long value)`
484			`{`
485	239	markom	`struct dev_memarea *dev;`
486	66	lampret
487	239	markom	`if (verify_memoryarea(memaddr)) {`
488			`switch(cur_area->granularity) {`
489	538	markom	`case 4:`
490			`cur_area->writefunc(memaddr, value);`
491			`mem_cycles += cur_area->delayw;`
492			`break;`
493	239	markom	`case 1:`
494	251	erez	`cur_area->writefunc(memaddr , (value >> 24) & 0xFF);`
495	239	markom	`cur_area->writefunc(memaddr + 1, (value >> 16) & 0xFF);`
496	251	erez	`cur_area->writefunc(memaddr + 2, (value >> 8) & 0xFF);`
497			`cur_area->writefunc(memaddr + 3, (value ) & 0xFF);`
498	537	markom	`mem_cycles += cur_area->delayw * 4;`
499	239	markom	`break;`
500			`case 2:`

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