416 lines
9.5 KiB
C
416 lines
9.5 KiB
C
/* This file is part of the program psim.
|
|
|
|
Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>
|
|
|
|
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
*/
|
|
|
|
|
|
#ifndef _CORE_C_
|
|
#define _CORE_C_
|
|
|
|
#include "basics.h"
|
|
#include "device_table.h"
|
|
#include "corefile.h"
|
|
|
|
typedef struct _core_mapping core_mapping;
|
|
struct _core_mapping {
|
|
/* common */
|
|
int level;
|
|
int space;
|
|
unsigned_word base;
|
|
unsigned_word bound;
|
|
unsigned nr_bytes;
|
|
/* memory map */
|
|
void *free_buffer;
|
|
void *buffer;
|
|
/* callback map */
|
|
device *device;
|
|
/* growth */
|
|
core_mapping *next;
|
|
};
|
|
|
|
struct _core_map {
|
|
core_mapping *first;
|
|
};
|
|
|
|
typedef enum {
|
|
core_read_map,
|
|
core_write_map,
|
|
core_execute_map,
|
|
nr_core_map_types,
|
|
} core_map_types;
|
|
|
|
struct _core {
|
|
core_map map[nr_core_map_types];
|
|
};
|
|
|
|
|
|
INLINE_CORE\
|
|
(core *)
|
|
core_create(void)
|
|
{
|
|
return ZALLOC(core);
|
|
}
|
|
|
|
|
|
INLINE_CORE\
|
|
(core *)
|
|
core_from_device(device *root)
|
|
{
|
|
root = device_root(root);
|
|
ASSERT(strcmp(device_name(root), "core") == 0);
|
|
return device_data(root);
|
|
}
|
|
|
|
|
|
INLINE_CORE\
|
|
(void)
|
|
core_init(core *memory)
|
|
{
|
|
core_map_types access_type;
|
|
for (access_type = 0;
|
|
access_type < nr_core_map_types;
|
|
access_type++) {
|
|
core_map *map = memory->map + access_type;
|
|
/* blow away old mappings */
|
|
core_mapping *curr = map->first;
|
|
while (curr != NULL) {
|
|
core_mapping *tbd = curr;
|
|
curr = curr->next;
|
|
if (tbd->free_buffer != NULL) {
|
|
ASSERT(tbd->buffer != NULL);
|
|
free(tbd->free_buffer);
|
|
}
|
|
free(tbd);
|
|
}
|
|
map->first = NULL;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/* the core has three sub mappings that the more efficient
|
|
read/write fixed quantity functions use */
|
|
|
|
INLINE_CORE\
|
|
(core_map *)
|
|
core_readable(core *memory)
|
|
{
|
|
return memory->map + core_read_map;
|
|
}
|
|
|
|
INLINE_CORE\
|
|
(core_map *)
|
|
core_writeable(core *memory)
|
|
{
|
|
return memory->map + core_write_map;
|
|
}
|
|
|
|
INLINE_CORE\
|
|
(core_map *)
|
|
core_executable(core *memory)
|
|
{
|
|
return memory->map + core_execute_map;
|
|
}
|
|
|
|
|
|
|
|
STATIC_INLINE_CORE\
|
|
(core_mapping *)
|
|
new_core_mapping(attach_type attach,
|
|
int space,
|
|
unsigned_word addr,
|
|
unsigned nr_bytes,
|
|
device *device,
|
|
void *buffer,
|
|
void *free_buffer)
|
|
{
|
|
core_mapping *new_mapping = ZALLOC(core_mapping);
|
|
/* common */
|
|
new_mapping->level = attach;
|
|
new_mapping->space = space;
|
|
new_mapping->base = addr;
|
|
new_mapping->nr_bytes = nr_bytes;
|
|
new_mapping->bound = addr + (nr_bytes - 1);
|
|
if (attach == attach_raw_memory) {
|
|
new_mapping->buffer = buffer;
|
|
new_mapping->free_buffer = free_buffer;
|
|
}
|
|
else if (attach >= attach_callback) {
|
|
new_mapping->device = device;
|
|
}
|
|
else {
|
|
error("new_core_mapping() - internal error - unknown attach type %d\n",
|
|
attach);
|
|
}
|
|
return new_mapping;
|
|
}
|
|
|
|
|
|
STATIC_INLINE_CORE\
|
|
(void)
|
|
core_map_attach(core_map *access_map,
|
|
attach_type attach,
|
|
int space,
|
|
unsigned_word addr,
|
|
unsigned nr_bytes, /* host limited */
|
|
device *client, /*callback/default*/
|
|
void *buffer, /*raw_memory*/
|
|
void *free_buffer) /*raw_memory*/
|
|
{
|
|
/* find the insertion point for this additional mapping and insert */
|
|
core_mapping *next_mapping;
|
|
core_mapping **last_mapping;
|
|
|
|
/* actually do occasionally get a zero size map */
|
|
if (nr_bytes == 0) {
|
|
device_error(client, "called on core_map_attach() with size zero");
|
|
}
|
|
|
|
/* find the insertion point (between last/next) */
|
|
next_mapping = access_map->first;
|
|
last_mapping = &access_map->first;
|
|
while(next_mapping != NULL
|
|
&& (next_mapping->level < attach
|
|
|| (next_mapping->level == attach
|
|
&& next_mapping->bound < addr))) {
|
|
/* provided levels are the same */
|
|
/* assert: next_mapping->base > all bases before next_mapping */
|
|
/* assert: next_mapping->bound >= all bounds before next_mapping */
|
|
last_mapping = &next_mapping->next;
|
|
next_mapping = next_mapping->next;
|
|
}
|
|
|
|
/* check insertion point correct */
|
|
ASSERT(next_mapping == NULL || next_mapping->level >= attach);
|
|
if (next_mapping != NULL && next_mapping->level == attach
|
|
&& next_mapping->base < (addr + (nr_bytes - 1))) {
|
|
device_error(client, "map overlap when attaching %d:0x%lx (%ld)",
|
|
space, (long)addr, (long)nr_bytes);
|
|
}
|
|
|
|
/* create/insert the new mapping */
|
|
*last_mapping = new_core_mapping(attach,
|
|
space, addr, nr_bytes,
|
|
client, buffer, free_buffer);
|
|
(*last_mapping)->next = next_mapping;
|
|
}
|
|
|
|
|
|
INLINE_CORE\
|
|
(void)
|
|
core_attach(core *memory,
|
|
attach_type attach,
|
|
int space,
|
|
access_type access,
|
|
unsigned_word addr,
|
|
unsigned nr_bytes, /* host limited */
|
|
device *client) /*callback/default*/
|
|
{
|
|
core_map_types access_map;
|
|
void *buffer;
|
|
void *free_buffer;
|
|
if (attach == attach_raw_memory) {
|
|
/* Padd out the raw buffer to ensure that ADDR starts on a
|
|
correctly aligned boundary */
|
|
int padding = (addr % sizeof (unsigned64));
|
|
free_buffer = zalloc(nr_bytes + padding);
|
|
buffer = (char*)free_buffer + padding;
|
|
}
|
|
else {
|
|
buffer = NULL;
|
|
free_buffer = &buffer; /* marker for assertion */
|
|
}
|
|
for (access_map = 0;
|
|
access_map < nr_core_map_types;
|
|
access_map++) {
|
|
switch (access_map) {
|
|
case core_read_map:
|
|
if (access & access_read)
|
|
core_map_attach(memory->map + access_map,
|
|
attach,
|
|
space, addr, nr_bytes,
|
|
client, buffer, free_buffer);
|
|
free_buffer = NULL;
|
|
break;
|
|
case core_write_map:
|
|
if (access & access_write)
|
|
core_map_attach(memory->map + access_map,
|
|
attach,
|
|
space, addr, nr_bytes,
|
|
client, buffer, free_buffer);
|
|
free_buffer = NULL;
|
|
break;
|
|
case core_execute_map:
|
|
if (access & access_exec)
|
|
core_map_attach(memory->map + access_map,
|
|
attach,
|
|
space, addr, nr_bytes,
|
|
client, buffer, free_buffer);
|
|
free_buffer = NULL;
|
|
break;
|
|
default:
|
|
error("core_attach() internal error\n");
|
|
break;
|
|
}
|
|
}
|
|
/* allocated buffer must attach to at least one thing */
|
|
ASSERT(free_buffer == NULL);
|
|
}
|
|
|
|
|
|
STATIC_INLINE_CORE\
|
|
(core_mapping *)
|
|
core_map_find_mapping(core_map *map,
|
|
unsigned_word addr,
|
|
unsigned nr_bytes,
|
|
cpu *processor,
|
|
unsigned_word cia,
|
|
int abort) /*either 0 or 1 - helps inline */
|
|
{
|
|
core_mapping *mapping = map->first;
|
|
ASSERT((addr & (nr_bytes - 1)) == 0); /* must be aligned */
|
|
ASSERT((addr + (nr_bytes - 1)) >= addr); /* must not wrap */
|
|
while (mapping != NULL) {
|
|
if (addr >= mapping->base
|
|
&& (addr + (nr_bytes - 1)) <= mapping->bound)
|
|
return mapping;
|
|
mapping = mapping->next;
|
|
}
|
|
if (abort)
|
|
error("core_find_mapping() - access to unmaped address, attach a default map to handle this - addr=0x%x nr_bytes=0x%x processor=0x%x cia=0x%x\n",
|
|
addr, nr_bytes, processor, cia);
|
|
return NULL;
|
|
}
|
|
|
|
|
|
STATIC_INLINE_CORE\
|
|
(void *)
|
|
core_translate(core_mapping *mapping,
|
|
unsigned_word addr)
|
|
{
|
|
return (void *)(((char *)mapping->buffer) + addr - mapping->base);
|
|
}
|
|
|
|
|
|
INLINE_CORE\
|
|
(unsigned)
|
|
core_map_read_buffer(core_map *map,
|
|
void *buffer,
|
|
unsigned_word addr,
|
|
unsigned len)
|
|
{
|
|
unsigned count = 0;
|
|
while (count < len) {
|
|
unsigned_word raddr = addr + count;
|
|
core_mapping *mapping =
|
|
core_map_find_mapping(map,
|
|
raddr, 1,
|
|
NULL, /*processor*/
|
|
0, /*cia*/
|
|
0); /*dont-abort*/
|
|
if (mapping == NULL)
|
|
break;
|
|
if (mapping->device != NULL) {
|
|
int nr_bytes = len - count;
|
|
if (raddr + nr_bytes - 1> mapping->bound)
|
|
nr_bytes = mapping->bound - raddr + 1;
|
|
if (device_io_read_buffer(mapping->device,
|
|
(unsigned_1*)buffer + count,
|
|
mapping->space,
|
|
raddr,
|
|
nr_bytes,
|
|
0, /*processor*/
|
|
0 /*cpu*/) != nr_bytes)
|
|
break;
|
|
count += nr_bytes;
|
|
}
|
|
else {
|
|
((unsigned_1*)buffer)[count] =
|
|
*(unsigned_1*)core_translate(mapping, raddr);
|
|
count += 1;
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
|
|
|
|
INLINE_CORE\
|
|
(unsigned)
|
|
core_map_write_buffer(core_map *map,
|
|
const void *buffer,
|
|
unsigned_word addr,
|
|
unsigned len)
|
|
{
|
|
unsigned count = 0;
|
|
while (count < len) {
|
|
unsigned_word raddr = addr + count;
|
|
core_mapping *mapping = core_map_find_mapping(map,
|
|
raddr, 1,
|
|
NULL, /*processor*/
|
|
0, /*cia*/
|
|
0); /*dont-abort*/
|
|
if (mapping == NULL)
|
|
break;
|
|
if (mapping->device != NULL) {
|
|
int nr_bytes = len - count;
|
|
if (raddr + nr_bytes - 1 > mapping->bound)
|
|
nr_bytes = mapping->bound - raddr + 1;
|
|
if (device_io_write_buffer(mapping->device,
|
|
(unsigned_1*)buffer + count,
|
|
mapping->space,
|
|
raddr,
|
|
nr_bytes,
|
|
0, /*processor*/
|
|
0 /*cpu*/) != nr_bytes)
|
|
break;
|
|
count += nr_bytes;
|
|
}
|
|
else {
|
|
*(unsigned_1*)core_translate(mapping, raddr) =
|
|
((unsigned_1*)buffer)[count];
|
|
count += 1;
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
|
|
|
|
/* define the read/write 1/2/4/8/word functions */
|
|
|
|
#define N 1
|
|
#include "corefile-n.h"
|
|
#undef N
|
|
|
|
#define N 2
|
|
#include "corefile-n.h"
|
|
#undef N
|
|
|
|
#define N 4
|
|
#include "corefile-n.h"
|
|
#undef N
|
|
|
|
#define N 8
|
|
#include "corefile-n.h"
|
|
#undef N
|
|
|
|
#define N word
|
|
#include "corefile-n.h"
|
|
#undef N
|
|
|
|
#endif /* _CORE_C_ */
|