357 lines
9.5 KiB
C
357 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 _EMUL_GENERIC_C_
|
|
#define _EMUL_GENERIC_C_
|
|
|
|
#include "emul_generic.h"
|
|
|
|
#ifndef STATIC_INLINE_EMUL_GENERIC
|
|
#define STATIC_INLINE_EMUL_GENERIC STATIC_INLINE
|
|
#endif
|
|
|
|
|
|
STATIC_INLINE_EMUL_GENERIC void
|
|
emul_syscall_enter(emul_syscall *emul,
|
|
int call,
|
|
int arg0,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
printf_filtered("%d:0x%lx:%s(",
|
|
cpu_nr(processor) + 1,
|
|
(long)cia,
|
|
emul->syscall_descriptor[call].name);
|
|
}
|
|
|
|
|
|
STATIC_INLINE_EMUL_GENERIC void
|
|
emul_syscall_exit(emul_syscall *emul,
|
|
int call,
|
|
int arg0,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
int status = cpu_registers(processor)->gpr[3];
|
|
int error = cpu_registers(processor)->gpr[0];
|
|
printf_filtered(")=%d", status);
|
|
if (error > 0 && error < emul->nr_error_names)
|
|
printf_filtered("[%s]", emul->error_names[error]);
|
|
printf_filtered("\n");
|
|
}
|
|
|
|
|
|
INLINE_EMUL_GENERIC unsigned64
|
|
emul_read_gpr64(cpu *processor,
|
|
int g)
|
|
{
|
|
unsigned32 hi;
|
|
unsigned32 lo;
|
|
if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) {
|
|
hi = cpu_registers(processor)->gpr[g];
|
|
lo = cpu_registers(processor)->gpr[g+1];
|
|
}
|
|
else {
|
|
lo = cpu_registers(processor)->gpr[g];
|
|
hi = cpu_registers(processor)->gpr[g+1];
|
|
}
|
|
return (INSERTED64(hi, 0, 31) | INSERTED64(lo, 32, 63));
|
|
}
|
|
|
|
|
|
INLINE_EMUL_GENERIC void
|
|
emul_write_gpr64(cpu *processor,
|
|
int g,
|
|
unsigned64 val)
|
|
{
|
|
unsigned32 hi = EXTRACTED64(val, 0, 31);
|
|
unsigned32 lo = EXTRACTED64(val, 32, 63);
|
|
if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) {
|
|
cpu_registers(processor)->gpr[g] = hi;
|
|
cpu_registers(processor)->gpr[g+1] = lo;
|
|
}
|
|
else {
|
|
cpu_registers(processor)->gpr[g] = lo;
|
|
cpu_registers(processor)->gpr[g+1] = hi;
|
|
}
|
|
}
|
|
|
|
|
|
INLINE_EMUL_GENERIC char *
|
|
emul_read_string(char *dest,
|
|
unsigned_word addr,
|
|
unsigned nr_bytes,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
unsigned nr_moved = 0;
|
|
if (addr == 0)
|
|
return NULL;
|
|
while (1) {
|
|
dest[nr_moved] = vm_data_map_read_1(cpu_data_map(processor),
|
|
addr + nr_moved,
|
|
processor, cia);
|
|
if (dest[nr_moved] == '\0' || nr_moved >= nr_bytes)
|
|
break;
|
|
nr_moved++;
|
|
}
|
|
dest[nr_moved] = '\0';
|
|
return dest;
|
|
}
|
|
|
|
|
|
INLINE_EMUL_GENERIC void
|
|
emul_write_status(cpu *processor,
|
|
int status,
|
|
int errno)
|
|
{
|
|
if (status == -1 && errno != 0) {
|
|
cpu_registers(processor)->gpr[3] = errno;
|
|
CR_SET(0, cr_i_summary_overflow);
|
|
}
|
|
else {
|
|
cpu_registers(processor)->gpr[3] = status;
|
|
CR_SET(0, 0);
|
|
}
|
|
}
|
|
|
|
|
|
INLINE_EMUL_GENERIC void
|
|
emul_write2_status(cpu *processor,
|
|
int status1,
|
|
int status2,
|
|
int errno)
|
|
{
|
|
if (status1 == -1 && errno != 0) {
|
|
cpu_registers(processor)->gpr[3] = errno;
|
|
CR_SET(0, cr_i_summary_overflow);
|
|
}
|
|
else {
|
|
cpu_registers(processor)->gpr[3] = status1;
|
|
cpu_registers(processor)->gpr[4] = status2;
|
|
CR_SET(0, 0);
|
|
}
|
|
}
|
|
|
|
|
|
INLINE_EMUL_GENERIC unsigned_word
|
|
emul_read_word(unsigned_word addr,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
return vm_data_map_read_word(cpu_data_map(processor),
|
|
addr,
|
|
processor, cia);
|
|
}
|
|
|
|
|
|
INLINE_EMUL_GENERIC void
|
|
emul_write_word(unsigned_word addr,
|
|
unsigned_word buf,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
vm_data_map_write_word(cpu_data_map(processor),
|
|
addr,
|
|
buf,
|
|
processor, cia);
|
|
}
|
|
|
|
|
|
INLINE_EMUL_GENERIC void
|
|
emul_write_buffer(const void *source,
|
|
unsigned_word addr,
|
|
unsigned nr_bytes,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
int nr_moved;
|
|
for (nr_moved = 0; nr_moved < nr_bytes; nr_moved++) {
|
|
vm_data_map_write_1(cpu_data_map(processor),
|
|
addr + nr_moved,
|
|
((const char*)source)[nr_moved],
|
|
processor, cia);
|
|
}
|
|
}
|
|
|
|
|
|
INLINE_EMUL_GENERIC void
|
|
emul_read_buffer(void *dest,
|
|
unsigned_word addr,
|
|
unsigned nr_bytes,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
int nr_moved;
|
|
for (nr_moved = 0; nr_moved < nr_bytes; nr_moved++) {
|
|
((char*)dest)[nr_moved] = vm_data_map_read_1(cpu_data_map(processor),
|
|
addr + nr_moved,
|
|
processor, cia);
|
|
}
|
|
}
|
|
|
|
|
|
INLINE_EMUL_GENERIC void
|
|
emul_do_system_call(os_emul_data *emul_data,
|
|
emul_syscall *emul,
|
|
unsigned call,
|
|
const int arg0,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
emul_syscall_handler *handler = NULL;
|
|
if (call >= emul->nr_system_calls)
|
|
error("do_call() os_emul call %d out-of-range\n", call);
|
|
|
|
handler = emul->syscall_descriptor[call].handler;
|
|
if (handler == NULL) {
|
|
if (emul->syscall_descriptor[call].name) {
|
|
error("do_call() unimplemented call %s\n", emul->syscall_descriptor[call].name);
|
|
} else {
|
|
error("do_call() unimplemented call %d\n", call);
|
|
}
|
|
}
|
|
|
|
if (WITH_TRACE && ppc_trace[trace_os_emul])
|
|
emul_syscall_enter(emul, call, arg0, processor, cia);
|
|
|
|
cpu_registers(processor)->gpr[0] = 0; /* default success */
|
|
handler(emul_data, call, arg0, processor, cia);
|
|
|
|
if (WITH_TRACE && ppc_trace[trace_os_emul])
|
|
emul_syscall_exit(emul, call, arg0, processor, cia);
|
|
}
|
|
|
|
|
|
/* default size for the first bank of memory */
|
|
|
|
#ifndef OEA_MEMORY_SIZE
|
|
#define OEA_MEMORY_SIZE 0x100000
|
|
#endif
|
|
|
|
|
|
/* Add options to the device tree */
|
|
|
|
INLINE_EMUL_GENERIC void
|
|
emul_add_tree_options(device *tree,
|
|
bfd *image,
|
|
const char *emul,
|
|
const char *env,
|
|
int oea_interrupt_prefix)
|
|
{
|
|
int little_endian = 0;
|
|
|
|
/* sort out little endian */
|
|
if (device_find_property(tree, "/options/little-endian?"))
|
|
little_endian = device_find_boolean_property(tree, "/options/little-endian?");
|
|
else {
|
|
#ifdef bfd_little_endian /* new bfd */
|
|
little_endian = (image != NULL && bfd_little_endian(image));
|
|
#else
|
|
little_endian = (image != NULL &&
|
|
!image->xvec->byteorder_big_p);
|
|
#endif
|
|
device_tree_add_parsed(tree, "/options/little-endian? %s",
|
|
little_endian ? "true" : "false");
|
|
}
|
|
|
|
/* misc other stuff */
|
|
device_tree_add_parsed(tree, "/openprom/options/oea-memory-size 0x%x",
|
|
OEA_MEMORY_SIZE);
|
|
device_tree_add_parsed(tree, "/openprom/options/oea-interrupt-prefix %d",
|
|
oea_interrupt_prefix);
|
|
device_tree_add_parsed(tree, "/openprom/options/smp 1");
|
|
device_tree_add_parsed(tree, "/openprom/options/env %s", env);
|
|
device_tree_add_parsed(tree, "/openprom/options/os-emul %s", emul);
|
|
device_tree_add_parsed(tree, "/openprom/options/strict-alignment? %s",
|
|
((WITH_ALIGNMENT == 0 && little_endian)
|
|
|| (WITH_ALIGNMENT == STRICT_ALIGNMENT))
|
|
? "true" : "false");
|
|
device_tree_add_parsed(tree, "/openprom/options/floating-point? %s",
|
|
WITH_FLOATING_POINT ? "true" : "false");
|
|
device_tree_add_parsed(tree, "/openprom/options/use-stdio? %s",
|
|
WITH_STDIO == DO_USE_STDIO ? "true" : "false");
|
|
device_tree_add_parsed(tree, "/openprom/options/model \"%s",
|
|
model_name[WITH_DEFAULT_MODEL]);
|
|
device_tree_add_parsed(tree, "/openprom/options/model-issue %d",
|
|
MODEL_ISSUE_IGNORE);
|
|
|
|
/* useful options */
|
|
/* FIXME - need to check the OpenBoot powerpc bindings to see if
|
|
this is still used and if so what it should be */
|
|
device_tree_add_parsed(tree, "/options/load-base 0x80000");
|
|
}
|
|
|
|
INLINE_EMUL_GENERIC void
|
|
emul_add_tree_hardware(device *root)
|
|
{
|
|
int i;
|
|
int nr_cpus = device_find_integer_property(root, "/openprom/options/smp");
|
|
|
|
/* sanity check the number of processors */
|
|
if (nr_cpus > MAX_NR_PROCESSORS)
|
|
error("Specified number of processors (%d) exceeds the number configured (%d).\n",
|
|
nr_cpus, MAX_NR_PROCESSORS);
|
|
|
|
/* add some memory */
|
|
if (device_tree_find_device(root, "/memory") == NULL) {
|
|
unsigned_word memory_size =
|
|
device_find_integer_property(root, "/openprom/options/oea-memory-size");
|
|
device_tree_add_parsed(root, "/memory@0/reg { 0x0 0x%lx",
|
|
(unsigned long)memory_size);
|
|
/* what about allocated? */
|
|
}
|
|
|
|
/* our processors */
|
|
for (i = 0; i < nr_cpus; i++) {
|
|
device_tree_add_parsed(root, "/cpus/cpu@%d/cpu-nr %d", i, i);
|
|
}
|
|
|
|
/* a fake eeprom - need to be able to write to it */
|
|
device_tree_add_parsed(root, "/openprom/memory@0xfff00000/reg { 0xfff00000 0x3000");
|
|
|
|
|
|
/* A local bus containing basic devices */
|
|
device_tree_add_parsed(root, "/iobus@0xf0000000/reg { 0xf0000000 0x0f000000");
|
|
|
|
/* NVRAM with clock */
|
|
device_tree_add_parsed(root, "/iobus/nvram@0x0/reg { 0 0x1000");
|
|
device_tree_add_parsed(root, "/iobus/nvram/timezone 0");
|
|
|
|
/* the debugging pal. Wire interrupts up directly */
|
|
device_tree_add_parsed(root, "/iobus/pal@0x0x1000/reg { 0x1000 32");
|
|
for (i = 0; i < nr_cpus; i++) {
|
|
device_tree_add_parsed(root, "/iobus/pal > int%d int /cpus/cpu@%d", i, i);
|
|
}
|
|
|
|
/* a disk containing zero's */
|
|
device_tree_add_parsed(root, "/iobus/disk@0x2000/reg { 0x2000 0x1000");
|
|
device_tree_add_parsed(root, "/iobus/disk/file \"/dev/zero");
|
|
|
|
/* chosen etc */
|
|
device_tree_add_parsed(root, "/chosen/stdin */iobus/pal");
|
|
device_tree_add_parsed(root, "/chosen/stdout !/chosen/stdin");
|
|
device_tree_add_parsed(root, "/chosen/memory */memory");
|
|
device_tree_add_parsed(root, "/chosen/disk */iobus/disk");
|
|
}
|
|
|
|
#endif /* _EMUL_GENERIC_C_ */
|