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old-cross-binutils/sim/ppc/emul_generic.c
Michael Meissner eada1efcaf Update to 1995-02-20 release
1996-02-21 16:47:06 +00:00

295 lines
7.9 KiB
C
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/* 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)
{
cpu_registers(processor)->gpr[3] = status;
if (status < 0)
cpu_registers(processor)->gpr[0] = errno;
else
cpu_registers(processor)->gpr[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)
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 == STRICT_ALIGNMENT || little_endian)
? "true" : "false");
device_tree_add_parsed(tree, "/openprom/options/floating-point? %s",
WITH_FLOATING_POINT ? "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);
}
INLINE_EMUL_GENERIC void
emul_add_tree_hardware(device *root)
{
/* 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? */
}
/* an eeprom */
device_tree_add_parsed(root, "/openprom/eeprom@0xfff00000/reg { 0xfff00000 0x3000");
/* the IO bus */
device_tree_add_parsed(root, "/iobus@0x400000/reg { 0x400000 0x400000");
device_tree_add_parsed(root, "/iobus/console@0x000000/reg { 0x000000 16");
device_tree_add_parsed(root, "/iobus/halt@0x100000/reg { 0x100000 4");
device_tree_add_parsed(root, "/iobus/icu@0x200000/reg { 0x200000 8");
device_tree_add_parsed(root, "/iobus/icu > 0 0 /iobus/icu");
device_tree_add_parsed(root, "/iobus/icu > 1 1 /iobus/icu");
/* chosen etc */
device_tree_add_parsed(root, "/chosen/stdin */iobus/console");
device_tree_add_parsed(root, "/chosen/stdout !/chosen/stdin");
device_tree_add_parsed(root, "/chosen/memory */memory");
}
#endif /* _SYSTEM_C_ */
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