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-rw-r--r--sim/common/sim-core.c839
1 files changed, 839 insertions, 0 deletions
diff --git a/sim/common/sim-core.c b/sim/common/sim-core.c
new file mode 100644
index 00000000000..36627a20350
--- /dev/null
+++ b/sim/common/sim-core.c
@@ -0,0 +1,839 @@
+/* This file is part of the program psim.
+
+ Copyright (C) 1994-1997, 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 SIM_CORE_C
+#define SIM_CORE_C
+
+#include "sim-main.h"
+#include "sim-assert.h"
+
+#if (WITH_HW)
+#include "sim-hw.h"
+#endif
+
+#if (WITH_DEVICES)
+/* TODO: create sim/common/device.h */
+void device_error (device *me, char* message, ...);
+int device_io_read_buffer(device *me, void *dest, int space, address_word addr, unsigned nr_bytes, sim_cpu *processor, sim_cia cia);
+int device_io_write_buffer(device *me, const void *source, int space, address_word addr, unsigned nr_bytes, sim_cpu *processor, sim_cia cia);
+#endif
+
+/* "core" module install handler.
+
+ This is called via sim_module_install to install the "core"
+ subsystem into the simulator. */
+
+#if EXTERN_SIM_CORE_P
+static MODULE_INIT_FN sim_core_init;
+static MODULE_UNINSTALL_FN sim_core_uninstall;
+#endif
+
+#if EXTERN_SIM_CORE_P
+SIM_RC
+sim_core_install (SIM_DESC sd)
+{
+ SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
+
+ /* establish the other handlers */
+ sim_module_add_uninstall_fn (sd, sim_core_uninstall);
+ sim_module_add_init_fn (sd, sim_core_init);
+
+ /* establish any initial data structures - none */
+ return SIM_RC_OK;
+}
+#endif
+
+
+/* Uninstall the "core" subsystem from the simulator. */
+
+#if EXTERN_SIM_CORE_P
+static void
+sim_core_uninstall (SIM_DESC sd)
+{
+ sim_core *core = STATE_CORE(sd);
+ unsigned map;
+ /* blow away any mappings */
+ for (map = 0; map < nr_maps; map++) {
+ sim_core_mapping *curr = core->common.map[map].first;
+ while (curr != NULL) {
+ sim_core_mapping *tbd = curr;
+ curr = curr->next;
+ if (tbd->free_buffer != NULL) {
+ SIM_ASSERT(tbd->buffer != NULL);
+ zfree(tbd->free_buffer);
+ }
+ zfree(tbd);
+ }
+ core->common.map[map].first = NULL;
+ }
+}
+#endif
+
+
+#if EXTERN_SIM_CORE_P
+static SIM_RC
+sim_core_init (SIM_DESC sd)
+{
+ /* Nothing to do */
+ return SIM_RC_OK;
+}
+#endif
+
+
+
+#ifndef SIM_CORE_SIGNAL
+#define SIM_CORE_SIGNAL(SD,CPU,CIA,MAP,NR_BYTES,ADDR,TRANSFER,ERROR) \
+sim_core_signal ((SD), (CPU), (CIA), (MAP), (NR_BYTES), (ADDR), (TRANSFER), (ERROR))
+#endif
+
+#if EXTERN_SIM_CORE_P
+void
+sim_core_signal (SIM_DESC sd,
+ sim_cpu *cpu,
+ sim_cia cia,
+ unsigned map,
+ int nr_bytes,
+ address_word addr,
+ transfer_type transfer,
+ sim_core_signals sig)
+{
+ const char *copy = (transfer == read_transfer ? "read" : "write");
+ address_word ip = CIA_ADDR (cia);
+ switch (sig)
+ {
+ case sim_core_unmapped_signal:
+ sim_io_eprintf (sd, "core: %d byte %s to unmapped address 0x%lx at 0x%lx\n",
+ nr_bytes, copy, (unsigned long) addr, (unsigned long) ip);
+ sim_engine_halt (sd, cpu, NULL, cia, sim_stopped, SIM_SIGSEGV);
+ break;
+ case sim_core_unaligned_signal:
+ sim_io_eprintf (sd, "core: %d byte misaligned %s to address 0x%lx at 0x%lx\n",
+ nr_bytes, copy, (unsigned long) addr, (unsigned long) ip);
+ sim_engine_halt (sd, cpu, NULL, cia, sim_stopped, SIM_SIGBUS);
+ break;
+ default:
+ sim_engine_abort (sd, cpu, cia,
+ "sim_core_signal - internal error - bad switch");
+ }
+}
+#endif
+
+
+#if EXTERN_SIM_CORE_P
+static sim_core_mapping *
+new_sim_core_mapping (SIM_DESC sd,
+ int level,
+ int space,
+ address_word addr,
+ address_word nr_bytes,
+ unsigned modulo,
+#if WITH_HW
+ struct hw *device,
+#else
+ device *device,
+#endif
+ void *buffer,
+ void *free_buffer)
+{
+ sim_core_mapping *new_mapping = ZALLOC(sim_core_mapping);
+ /* common */
+ new_mapping->level = level;
+ new_mapping->space = space;
+ new_mapping->base = addr;
+ new_mapping->nr_bytes = nr_bytes;
+ new_mapping->bound = addr + (nr_bytes - 1);
+ if (modulo == 0)
+ new_mapping->mask = (unsigned) 0 - 1;
+ else
+ new_mapping->mask = modulo - 1;
+ new_mapping->buffer = buffer;
+ new_mapping->free_buffer = free_buffer;
+ new_mapping->device = device;
+ return new_mapping;
+}
+#endif
+
+
+#if EXTERN_SIM_CORE_P
+static void
+sim_core_map_attach (SIM_DESC sd,
+ sim_core_map *access_map,
+ int level,
+ int space,
+ address_word addr,
+ address_word nr_bytes,
+ unsigned modulo,
+#if WITH_HW
+ struct hw *client, /*callback/default*/
+#else
+ device *client, /*callback/default*/
+#endif
+ void *buffer, /*raw_memory*/
+ void *free_buffer) /*raw_memory*/
+{
+ /* find the insertion point for this additional mapping and then
+ insert */
+ sim_core_mapping *next_mapping;
+ sim_core_mapping **last_mapping;
+
+ SIM_ASSERT ((client == NULL) != (buffer == NULL));
+ SIM_ASSERT ((client == NULL) >= (free_buffer != NULL));
+
+ /* actually do occasionally get a zero size map */
+ if (nr_bytes == 0)
+ {
+#if (WITH_DEVICES)
+ device_error(client, "called on sim_core_map_attach with size zero");
+#endif
+#if (WITH_HW)
+ sim_hw_abort (sd, client, "called on sim_core_map_attach with size zero");
+#endif
+ sim_io_error (sd, "called on sim_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 < level
+ || (next_mapping->level == level
+ && 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 */
+ SIM_ASSERT (next_mapping == NULL || next_mapping->level >= level);
+ if (next_mapping != NULL && next_mapping->level == level
+ && next_mapping->base < (addr + (nr_bytes - 1)))
+ {
+#if (WITH_DEVICES)
+ device_error (client, "memory map %d:0x%lx..0x%lx (%ld bytes) overlaps %d:0x%lx..0x%lx (%ld bytes)",
+ space,
+ (long) addr,
+ (long) nr_bytes,
+ (long) (addr + (nr_bytes - 1)),
+ next_mapping->space,
+ (long) next_mapping->base,
+ (long) next_mapping->bound,
+ (long) next_mapping->nr_bytes);
+#endif
+#if WITH_HW
+ sim_hw_abort (sd, client, "memory map %d:0x%lx..0x%lx (%ld bytes) overlaps %d:0x%lx..0x%lx (%ld bytes)",
+ space,
+ (long) addr,
+ (long) nr_bytes,
+ (long) (addr + (nr_bytes - 1)),
+ next_mapping->space,
+ (long) next_mapping->base,
+ (long) next_mapping->bound,
+ (long) next_mapping->nr_bytes);
+#endif
+ sim_io_error (sd, "memory map %d:0x%lx..0x%lx (%ld bytes) overlaps %d:0x%lx..0x%lx (%ld bytes)",
+ space,
+ (long) addr,
+ (long) nr_bytes,
+ (long) (addr + (nr_bytes - 1)),
+ next_mapping->space,
+ (long) next_mapping->base,
+ (long) next_mapping->bound,
+ (long) next_mapping->nr_bytes);
+ }
+
+ /* create/insert the new mapping */
+ *last_mapping = new_sim_core_mapping(sd,
+ level,
+ space, addr, nr_bytes, modulo,
+ client, buffer, free_buffer);
+ (*last_mapping)->next = next_mapping;
+}
+#endif
+
+
+/* Attach memory or a memory mapped device to the simulator.
+ See sim-core.h for a full description. */
+
+#if EXTERN_SIM_CORE_P
+void
+sim_core_attach (SIM_DESC sd,
+ sim_cpu *cpu,
+ int level,
+ unsigned mapmask,
+ int space,
+ address_word addr,
+ address_word nr_bytes,
+ unsigned modulo,
+#if WITH_HW
+ struct hw *client,
+#else
+ device *client,
+#endif
+ void *optional_buffer)
+{
+ sim_core *memory = STATE_CORE(sd);
+ unsigned map;
+ void *buffer;
+ void *free_buffer;
+
+ /* check for for attempt to use unimplemented per-processor core map */
+ if (cpu != NULL)
+ sim_io_error (sd, "sim_core_map_attach - processor specific memory map not yet supported");
+
+ /* verify modulo memory */
+ if (!WITH_MODULO_MEMORY && modulo != 0)
+ {
+#if (WITH_DEVICES)
+ device_error (client, "sim_core_attach - internal error - modulo memory disabled");
+#endif
+#if (WITH_HW)
+ sim_hw_abort (sd, client, "sim_core_attach - internal error - modulo memory disabled");
+#endif
+ sim_io_error (sd, "sim_core_attach - internal error - modulo memory disabled");
+ }
+ if (client != NULL && modulo != 0)
+ {
+#if (WITH_DEVICES)
+ device_error (client, "sim_core_attach - internal error - modulo and callback memory conflict");
+#endif
+#if (WITH_HW)
+ sim_hw_abort (sd, client, "sim_core_attach - internal error - modulo and callback memory conflict");
+#endif
+ sim_io_error (sd, "sim_core_attach - internal error - modulo and callback memory conflict");
+ }
+ if (modulo != 0)
+ {
+ unsigned mask = modulo - 1;
+ /* any zero bits */
+ while (mask >= sizeof (unsigned64)) /* minimum modulo */
+ {
+ if ((mask & 1) == 0)
+ mask = 0;
+ else
+ mask >>= 1;
+ }
+ if (mask != sizeof (unsigned64) - 1)
+ {
+#if (WITH_DEVICES)
+ device_error (client, "sim_core_attach - internal error - modulo %lx not power of two", (long) modulo);
+#endif
+#if (WITH_HW)
+ sim_hw_abort (sd, client, "sim_core_attach - internal error - modulo %lx not power of two", (long) modulo);
+#endif
+ sim_io_error (sd, "sim_core_attach - internal error - modulo %lx not power of two", (long) modulo);
+ }
+ }
+
+ /* verify consistency between device and buffer */
+ if (client != NULL && optional_buffer != NULL)
+ {
+#if (WITH_DEVICES)
+ device_error (client, "sim_core_attach - internal error - conflicting buffer and attach arguments");
+#endif
+#if (WITH_HW)
+ sim_hw_abort (sd, client, "sim_core_attach - internal error - conflicting buffer and attach arguments");
+#endif
+ sim_io_error (sd, "sim_core_attach - internal error - conflicting buffer and attach arguments");
+ }
+ if (client == NULL)
+ {
+ if (optional_buffer == NULL)
+ {
+ int padding = (addr % sizeof (unsigned64));
+ unsigned long bytes = (modulo == 0 ? nr_bytes : modulo) + padding;
+ free_buffer = zalloc (bytes);
+ buffer = (char*) free_buffer + padding;
+ }
+ else
+ {
+ buffer = optional_buffer;
+ free_buffer = NULL;
+ }
+ }
+ else
+ {
+ /* a device */
+ buffer = NULL;
+ free_buffer = NULL;
+ }
+
+ /* attach the region to all applicable access maps */
+ for (map = 0;
+ map < nr_maps;
+ map++)
+ {
+ if (mapmask & (1 << map))
+ {
+ sim_core_map_attach (sd, &memory->common.map[map],
+ level, space, addr, nr_bytes, modulo,
+ client, buffer, free_buffer);
+ free_buffer = NULL;
+ }
+ }
+
+ /* Just copy this map to each of the processor specific data structures.
+ FIXME - later this will be replaced by true processor specific
+ maps. */
+ {
+ int i;
+ for (i = 0; i < MAX_NR_PROCESSORS; i++)
+ {
+ CPU_CORE (STATE_CPU (sd, i))->common = STATE_CORE (sd)->common;
+ }
+ }
+}
+#endif
+
+
+/* Remove any memory reference related to this address */
+#if EXTERN_SIM_CORE_P
+static void
+sim_core_map_detach (SIM_DESC sd,
+ sim_core_map *access_map,
+ int level,
+ int space,
+ address_word addr)
+{
+ sim_core_mapping **entry;
+ for (entry = &access_map->first;
+ (*entry) != NULL;
+ entry = &(*entry)->next)
+ {
+ if ((*entry)->base == addr
+ && (*entry)->level == level
+ && (*entry)->space == space)
+ {
+ sim_core_mapping *dead = (*entry);
+ (*entry) = dead->next;
+ if (dead->free_buffer != NULL)
+ zfree (dead->free_buffer);
+ zfree (dead);
+ return;
+ }
+ }
+}
+#endif
+
+#if EXTERN_SIM_CORE_P
+void
+sim_core_detach (SIM_DESC sd,
+ sim_cpu *cpu,
+ int level,
+ int address_space,
+ address_word addr)
+{
+ sim_core *memory = STATE_CORE (sd);
+ unsigned map;
+ for (map = 0; map < nr_maps; map++)
+ {
+ sim_core_map_detach (sd, &memory->common.map[map],
+ level, address_space, addr);
+ }
+ /* Just copy this update to each of the processor specific data
+ structures. FIXME - later this will be replaced by true
+ processor specific maps. */
+ {
+ int i;
+ for (i = 0; i < MAX_NR_PROCESSORS; i++)
+ {
+ CPU_CORE (STATE_CPU (sd, i))->common = STATE_CORE (sd)->common;
+ }
+ }
+}
+#endif
+
+
+STATIC_INLINE_SIM_CORE\
+(sim_core_mapping *)
+sim_core_find_mapping(sim_core_common *core,
+ unsigned map,
+ address_word addr,
+ unsigned nr_bytes,
+ transfer_type transfer,
+ int abort, /*either 0 or 1 - hint to inline/-O */
+ sim_cpu *cpu, /* abort => cpu != NULL */
+ sim_cia cia)
+{
+ sim_core_mapping *mapping = core->map[map].first;
+ ASSERT ((addr & (nr_bytes - 1)) == 0); /* must be aligned */
+ ASSERT ((addr + (nr_bytes - 1)) >= addr); /* must not wrap */
+ ASSERT (!abort || cpu != NULL); /* abort needs a non null CPU */
+ while (mapping != NULL)
+ {
+ if (addr >= mapping->base
+ && (addr + (nr_bytes - 1)) <= mapping->bound)
+ return mapping;
+ mapping = mapping->next;
+ }
+ if (abort)
+ {
+ SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, nr_bytes, addr, transfer,
+ sim_core_unmapped_signal);
+ }
+ return NULL;
+}
+
+
+STATIC_INLINE_SIM_CORE\
+(void *)
+sim_core_translate (sim_core_mapping *mapping,
+ address_word addr)
+{
+ if (WITH_MODULO_MEMORY)
+ return (void *)((unsigned8 *) mapping->buffer
+ + ((addr - mapping->base) & mapping->mask));
+ else
+ return (void *)((unsigned8 *) mapping->buffer
+ + addr - mapping->base);
+}
+
+
+#if EXTERN_SIM_CORE_P
+unsigned
+sim_core_read_buffer (SIM_DESC sd,
+ sim_cpu *cpu,
+ unsigned map,
+ void *buffer,
+ address_word addr,
+ unsigned len)
+{
+ sim_core_common *core = (cpu == NULL ? &STATE_CORE (sd)->common : &CPU_CORE (cpu)->common);
+ unsigned count = 0;
+ while (count < len)
+ {
+ unsigned_word raddr = addr + count;
+ sim_core_mapping *mapping =
+ sim_core_find_mapping (core, map,
+ raddr, /*nr-bytes*/1,
+ read_transfer,
+ 0 /*dont-abort*/, NULL, NULL_CIA);
+ if (mapping == NULL)
+ break;
+#if (WITH_DEVICES)
+ 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,
+ cpu,
+ CIA_GET (cpu)) != nr_bytes)
+ break;
+ count += nr_bytes;
+ continue;
+ }
+#endif
+#if (WITH_HW)
+ if (mapping->device != NULL)
+ {
+ int nr_bytes = len - count;
+ if (raddr + nr_bytes - 1> mapping->bound)
+ nr_bytes = mapping->bound - raddr + 1;
+ if (sim_hw_io_read_buffer (sd, mapping->device,
+ (unsigned_1*)buffer + count,
+ mapping->space,
+ raddr,
+ nr_bytes) != nr_bytes)
+ break;
+ count += nr_bytes;
+ continue;
+ }
+#endif
+ ((unsigned_1*)buffer)[count] =
+ *(unsigned_1*)sim_core_translate(mapping, raddr);
+ count += 1;
+ }
+ return count;
+}
+#endif
+
+
+#if EXTERN_SIM_CORE_P
+unsigned
+sim_core_write_buffer (SIM_DESC sd,
+ sim_cpu *cpu,
+ unsigned map,
+ const void *buffer,
+ address_word addr,
+ unsigned len)
+{
+ sim_core_common *core = (cpu == NULL ? &STATE_CORE (sd)->common : &CPU_CORE (cpu)->common);
+ unsigned count = 0;
+ while (count < len)
+ {
+ unsigned_word raddr = addr + count;
+ sim_core_mapping *mapping =
+ sim_core_find_mapping (core, map,
+ raddr, /*nr-bytes*/1,
+ write_transfer,
+ 0 /*dont-abort*/, NULL, NULL_CIA);
+ if (mapping == NULL)
+ break;
+#if (WITH_DEVICES)
+ if (WITH_CALLBACK_MEMORY
+ && 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,
+ cpu,
+ CIA_GET(cpu)) != nr_bytes)
+ break;
+ count += nr_bytes;
+ continue;
+ }
+#endif
+#if (WITH_HW)
+ if (WITH_CALLBACK_MEMORY
+ && mapping->device != NULL)
+ {
+ int nr_bytes = len - count;
+ if (raddr + nr_bytes - 1 > mapping->bound)
+ nr_bytes = mapping->bound - raddr + 1;
+ if (sim_hw_io_write_buffer (sd, mapping->device,
+ (unsigned_1*)buffer + count,
+ mapping->space,
+ raddr,
+ nr_bytes) != nr_bytes)
+ break;
+ count += nr_bytes;
+ continue;
+ }
+#endif
+ *(unsigned_1*)sim_core_translate(mapping, raddr) =
+ ((unsigned_1*)buffer)[count];
+ count += 1;
+ }
+ return count;
+}
+#endif
+
+
+#if EXTERN_SIM_CORE_P
+void
+sim_core_set_xor (SIM_DESC sd,
+ sim_cpu *cpu,
+ int is_xor)
+{
+ /* set up the XOR map if required. */
+ if (WITH_XOR_ENDIAN) {
+ {
+ sim_core *core = STATE_CORE (sd);
+ sim_cpu_core *cpu_core = (cpu != NULL ? CPU_CORE (cpu) : NULL);
+ if (cpu_core != NULL)
+ {
+ int i = 1;
+ unsigned mask;
+ if (is_xor)
+ mask = WITH_XOR_ENDIAN - 1;
+ else
+ mask = 0;
+ while (i - 1 < WITH_XOR_ENDIAN)
+ {
+ cpu_core->xor[i-1] = mask;
+ mask = (mask << 1) & (WITH_XOR_ENDIAN - 1);
+ i = (i << 1);
+ }
+ }
+ else
+ {
+ if (is_xor)
+ core->byte_xor = WITH_XOR_ENDIAN - 1;
+ else
+ core->byte_xor = 0;
+ }
+ }
+ }
+ else {
+ if (is_xor)
+ sim_engine_abort (sd, NULL, NULL_CIA,
+ "Attempted to enable xor-endian mode when permenantly disabled.");
+ }
+}
+#endif
+
+
+#if EXTERN_SIM_CORE_P
+static void
+reverse_n (unsigned_1 *dest,
+ const unsigned_1 *src,
+ int nr_bytes)
+{
+ int i;
+ for (i = 0; i < nr_bytes; i++)
+ {
+ dest [nr_bytes - i - 1] = src [i];
+ }
+}
+#endif
+
+
+#if EXTERN_SIM_CORE_P
+unsigned
+sim_core_xor_read_buffer (SIM_DESC sd,
+ sim_cpu *cpu,
+ unsigned map,
+ void *buffer,
+ address_word addr,
+ unsigned nr_bytes)
+{
+ address_word byte_xor = (cpu == NULL ? STATE_CORE (sd)->byte_xor : CPU_CORE (cpu)->xor[0]);
+ if (!WITH_XOR_ENDIAN || !byte_xor)
+ return sim_core_read_buffer (sd, cpu, map, buffer, addr, nr_bytes);
+ else
+ /* only break up transfers when xor-endian is both selected and enabled */
+ {
+ unsigned_1 x[WITH_XOR_ENDIAN + 1]; /* +1 to avoid zero-sized array */
+ unsigned nr_transfered = 0;
+ address_word start = addr;
+ unsigned nr_this_transfer = (WITH_XOR_ENDIAN - (addr & ~(WITH_XOR_ENDIAN - 1)));
+ address_word stop;
+ /* initial and intermediate transfers are broken when they cross
+ an XOR endian boundary */
+ while (nr_transfered + nr_this_transfer < nr_bytes)
+ /* initial/intermediate transfers */
+ {
+ /* since xor-endian is enabled stop^xor defines the start
+ address of the transfer */
+ stop = start + nr_this_transfer - 1;
+ SIM_ASSERT (start <= stop);
+ SIM_ASSERT ((stop ^ byte_xor) <= (start ^ byte_xor));
+ if (sim_core_read_buffer (sd, cpu, map, x, stop ^ byte_xor, nr_this_transfer)
+ != nr_this_transfer)
+ return nr_transfered;
+ reverse_n (&((unsigned_1*)buffer)[nr_transfered], x, nr_this_transfer);
+ nr_transfered += nr_this_transfer;
+ nr_this_transfer = WITH_XOR_ENDIAN;
+ start = stop + 1;
+ }
+ /* final transfer */
+ nr_this_transfer = nr_bytes - nr_transfered;
+ stop = start + nr_this_transfer - 1;
+ SIM_ASSERT (stop == (addr + nr_bytes - 1));
+ if (sim_core_read_buffer (sd, cpu, map, x, stop ^ byte_xor, nr_this_transfer)
+ != nr_this_transfer)
+ return nr_transfered;
+ reverse_n (&((unsigned_1*)buffer)[nr_transfered], x, nr_this_transfer);
+ return nr_bytes;
+ }
+}
+#endif
+
+
+#if EXTERN_SIM_CORE_P
+unsigned
+sim_core_xor_write_buffer (SIM_DESC sd,
+ sim_cpu *cpu,
+ unsigned map,
+ const void *buffer,
+ address_word addr,
+ unsigned nr_bytes)
+{
+ address_word byte_xor = (cpu == NULL ? STATE_CORE (sd)->byte_xor : CPU_CORE (cpu)->xor[0]);
+ if (!WITH_XOR_ENDIAN || !byte_xor)
+ return sim_core_write_buffer (sd, cpu, map, buffer, addr, nr_bytes);
+ else
+ /* only break up transfers when xor-endian is both selected and enabled */
+ {
+ unsigned_1 x[WITH_XOR_ENDIAN + 1]; /* +1 to avoid zero sized array */
+ unsigned nr_transfered = 0;
+ address_word start = addr;
+ unsigned nr_this_transfer = (WITH_XOR_ENDIAN - (addr & ~(WITH_XOR_ENDIAN - 1)));
+ address_word stop;
+ /* initial and intermediate transfers are broken when they cross
+ an XOR endian boundary */
+ while (nr_transfered + nr_this_transfer < nr_bytes)
+ /* initial/intermediate transfers */
+ {
+ /* since xor-endian is enabled stop^xor defines the start
+ address of the transfer */
+ stop = start + nr_this_transfer - 1;
+ SIM_ASSERT (start <= stop);
+ SIM_ASSERT ((stop ^ byte_xor) <= (start ^ byte_xor));
+ reverse_n (x, &((unsigned_1*)buffer)[nr_transfered], nr_this_transfer);
+ if (sim_core_read_buffer (sd, cpu, map, x, stop ^ byte_xor, nr_this_transfer)
+ != nr_this_transfer)
+ return nr_transfered;
+ nr_transfered += nr_this_transfer;
+ nr_this_transfer = WITH_XOR_ENDIAN;
+ start = stop + 1;
+ }
+ /* final transfer */
+ nr_this_transfer = nr_bytes - nr_transfered;
+ stop = start + nr_this_transfer - 1;
+ SIM_ASSERT (stop == (addr + nr_bytes - 1));
+ reverse_n (x, &((unsigned_1*)buffer)[nr_transfered], nr_this_transfer);
+ if (sim_core_read_buffer (sd, cpu, map, x, stop ^ byte_xor, nr_this_transfer)
+ != nr_this_transfer)
+ return nr_transfered;
+ return nr_bytes;
+ }
+}
+#endif
+
+
+
+/* define the read/write 1/2/4/8/16/word functions */
+
+#define N 16
+#include "sim-n-core.h"
+
+#define N 8
+#include "sim-n-core.h"
+
+#define N 7
+#define M 8
+#include "sim-n-core.h"
+
+#define N 6
+#define M 8
+#include "sim-n-core.h"
+
+#define N 5
+#define M 8
+#include "sim-n-core.h"
+
+#define N 4
+#include "sim-n-core.h"
+
+#define N 3
+#define M 4
+#include "sim-n-core.h"
+
+#define N 2
+#include "sim-n-core.h"
+
+#define N 1
+#include "sim-n-core.h"
+
+#endif