1 /* This file is part of the program psim.
3 Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 #ifndef _EMUL_GENERIC_C_
23 #define _EMUL_GENERIC_C_
25 #include "emul_generic.h"
27 #ifndef STATIC_INLINE_EMUL_GENERIC
28 #define STATIC_INLINE_EMUL_GENERIC STATIC_INLINE
32 STATIC_INLINE_EMUL_GENERIC
void
33 emul_syscall_enter(emul_syscall
*emul
,
39 printf_filtered("%d:0x%lx:%s(",
40 cpu_nr(processor
) + 1,
42 emul
->syscall_descriptor
[call
].name
);
46 STATIC_INLINE_EMUL_GENERIC
void
47 emul_syscall_exit(emul_syscall
*emul
,
53 int status
= cpu_registers(processor
)->gpr
[3];
54 int error
= cpu_registers(processor
)->gpr
[0];
55 printf_filtered(")=%d", status
);
56 if (error
> 0 && error
< emul
->nr_error_names
)
57 printf_filtered("[%s]", emul
->error_names
[error
]);
58 printf_filtered("\n");
62 INLINE_EMUL_GENERIC unsigned64
63 emul_read_gpr64(cpu
*processor
,
68 if (CURRENT_TARGET_BYTE_ORDER
== BIG_ENDIAN
) {
69 hi
= cpu_registers(processor
)->gpr
[g
];
70 lo
= cpu_registers(processor
)->gpr
[g
+1];
73 lo
= cpu_registers(processor
)->gpr
[g
];
74 hi
= cpu_registers(processor
)->gpr
[g
+1];
76 return (INSERTED64(hi
, 0, 31) | INSERTED64(lo
, 32, 63));
80 INLINE_EMUL_GENERIC
void
81 emul_write_gpr64(cpu
*processor
,
85 unsigned32 hi
= EXTRACTED64(val
, 0, 31);
86 unsigned32 lo
= EXTRACTED64(val
, 32, 63);
87 if (CURRENT_TARGET_BYTE_ORDER
== BIG_ENDIAN
) {
88 cpu_registers(processor
)->gpr
[g
] = hi
;
89 cpu_registers(processor
)->gpr
[g
+1] = lo
;
92 cpu_registers(processor
)->gpr
[g
] = lo
;
93 cpu_registers(processor
)->gpr
[g
+1] = hi
;
98 INLINE_EMUL_GENERIC
char *
99 emul_read_string(char *dest
,
105 unsigned nr_moved
= 0;
109 dest
[nr_moved
] = vm_data_map_read_1(cpu_data_map(processor
),
112 if (dest
[nr_moved
] == '\0' || nr_moved
>= nr_bytes
)
116 dest
[nr_moved
] = '\0';
121 INLINE_EMUL_GENERIC
void
122 emul_write_status(cpu
*processor
,
126 if (status
== -1 && errno
!= 0) {
127 cpu_registers(processor
)->gpr
[3] = errno
;
128 CR_SET(0, cr_i_summary_overflow
);
131 cpu_registers(processor
)->gpr
[3] = status
;
137 INLINE_EMUL_GENERIC
void
138 emul_write2_status(cpu
*processor
,
143 if (status1
== -1 && errno
!= 0) {
144 cpu_registers(processor
)->gpr
[3] = errno
;
145 CR_SET(0, cr_i_summary_overflow
);
148 cpu_registers(processor
)->gpr
[3] = status1
;
149 cpu_registers(processor
)->gpr
[4] = status2
;
155 INLINE_EMUL_GENERIC unsigned_word
156 emul_read_word(unsigned_word addr
,
160 return vm_data_map_read_word(cpu_data_map(processor
),
166 INLINE_EMUL_GENERIC
void
167 emul_write_word(unsigned_word addr
,
172 vm_data_map_write_word(cpu_data_map(processor
),
179 INLINE_EMUL_GENERIC
void
180 emul_write_buffer(const void *source
,
187 for (nr_moved
= 0; nr_moved
< nr_bytes
; nr_moved
++) {
188 vm_data_map_write_1(cpu_data_map(processor
),
190 ((const char*)source
)[nr_moved
],
196 INLINE_EMUL_GENERIC
void
197 emul_read_buffer(void *dest
,
204 for (nr_moved
= 0; nr_moved
< nr_bytes
; nr_moved
++) {
205 ((char*)dest
)[nr_moved
] = vm_data_map_read_1(cpu_data_map(processor
),
212 INLINE_EMUL_GENERIC
void
213 emul_do_system_call(os_emul_data
*emul_data
,
220 emul_syscall_handler
*handler
= NULL
;
221 if (call
>= emul
->nr_system_calls
)
222 error("do_call() os_emul call %d out-of-range\n", call
);
224 handler
= emul
->syscall_descriptor
[call
].handler
;
225 if (handler
== NULL
) {
226 if (emul
->syscall_descriptor
[call
].name
) {
227 error("do_call() unimplemented call %s\n", emul
->syscall_descriptor
[call
].name
);
229 error("do_call() unimplemented call %d\n", call
);
233 if (WITH_TRACE
&& ppc_trace
[trace_os_emul
])
234 emul_syscall_enter(emul
, call
, arg0
, processor
, cia
);
236 cpu_registers(processor
)->gpr
[0] = 0; /* default success */
237 handler(emul_data
, call
, arg0
, processor
, cia
);
239 if (WITH_TRACE
&& ppc_trace
[trace_os_emul
])
240 emul_syscall_exit(emul
, call
, arg0
, processor
, cia
);
244 /* default size for the first bank of memory */
246 #ifndef OEA_MEMORY_SIZE
247 #define OEA_MEMORY_SIZE 0x100000
251 /* Add options to the device tree */
253 INLINE_EMUL_GENERIC
void
254 emul_add_tree_options(device
*tree
,
258 int oea_interrupt_prefix
)
260 int little_endian
= 0;
262 /* sort out little endian */
263 if (device_find_property(tree
, "/options/little-endian?"))
264 little_endian
= device_find_boolean_property(tree
, "/options/little-endian?");
266 #ifdef bfd_little_endian /* new bfd */
267 little_endian
= (image
!= NULL
&& bfd_little_endian(image
));
269 little_endian
= (image
!= NULL
&&
270 !image
->xvec
->byteorder_big_p
);
272 device_tree_add_parsed(tree
, "/options/little-endian? %s",
273 little_endian
? "true" : "false");
276 /* misc other stuff */
277 device_tree_add_parsed(tree
, "/openprom/options/oea-memory-size 0x%x",
279 device_tree_add_parsed(tree
, "/openprom/options/oea-interrupt-prefix %d",
280 oea_interrupt_prefix
);
281 device_tree_add_parsed(tree
, "/openprom/options/smp 1");
282 device_tree_add_parsed(tree
, "/openprom/options/env %s", env
);
283 device_tree_add_parsed(tree
, "/openprom/options/os-emul %s", emul
);
284 device_tree_add_parsed(tree
, "/openprom/options/strict-alignment? %s",
285 ((WITH_ALIGNMENT
== 0 && little_endian
)
286 || (WITH_ALIGNMENT
== STRICT_ALIGNMENT
))
288 device_tree_add_parsed(tree
, "/openprom/options/floating-point? %s",
289 WITH_FLOATING_POINT
? "true" : "false");
290 device_tree_add_parsed(tree
, "/openprom/options/use-stdio? %s",
291 WITH_STDIO
== DO_USE_STDIO
? "true" : "false");
292 device_tree_add_parsed(tree
, "/openprom/options/model \"%s",
293 model_name
[WITH_DEFAULT_MODEL
]);
294 device_tree_add_parsed(tree
, "/openprom/options/model-issue %d",
298 /* FIXME - need to check the OpenBoot powerpc bindings to see if
299 this is still used and if so what it should be */
300 device_tree_add_parsed(tree
, "/options/load-base 0x80000");
303 INLINE_EMUL_GENERIC
void
304 emul_add_tree_hardware(device
*root
)
307 int nr_cpus
= device_find_integer_property(root
, "/openprom/options/smp");
309 /* sanity check the number of processors */
310 if (nr_cpus
> MAX_NR_PROCESSORS
)
311 error("Specified number of processors (%d) exceeds the number configured (%d).\n",
312 nr_cpus
, MAX_NR_PROCESSORS
);
314 /* add some memory */
315 if (device_tree_find_device(root
, "/memory") == NULL
) {
316 unsigned_word memory_size
=
317 device_find_integer_property(root
, "/openprom/options/oea-memory-size");
318 device_tree_add_parsed(root
, "/memory@0/reg { 0x0 0x%lx",
319 (unsigned long)memory_size
);
320 /* what about allocated? */
324 for (i
= 0; i
< nr_cpus
; i
++) {
325 device_tree_add_parsed(root
, "/cpus/cpu@%d/cpu-nr %d", i
, i
);
328 /* a fake eeprom - need to be able to write to it */
329 device_tree_add_parsed(root
, "/openprom/memory@0xfff00000/reg { 0xfff00000 0x3000");
332 /* A local bus containing basic devices */
333 device_tree_add_parsed(root
, "/iobus@0xf0000000/reg { 0xf0000000 0x0f000000");
335 /* NVRAM with clock */
336 device_tree_add_parsed(root
, "/iobus/nvram@0x0/reg { 0 0x1000");
337 device_tree_add_parsed(root
, "/iobus/nvram/timezone 0");
339 /* the debugging pal. Wire interrupts up directly */
340 device_tree_add_parsed(root
, "/iobus/pal@0x0x1000/reg { 0x1000 32");
341 for (i
= 0; i
< nr_cpus
; i
++) {
342 device_tree_add_parsed(root
, "/iobus/pal > int%d int /cpus/cpu@%d", i
, i
);
345 /* a disk containing zero's */
346 device_tree_add_parsed(root
, "/iobus/disk@0x2000/reg { 0x2000 0x1000");
347 device_tree_add_parsed(root
, "/iobus/disk/file \"/dev/zero");
350 device_tree_add_parsed(root
, "/chosen/stdin */iobus/pal");
351 device_tree_add_parsed(root
, "/chosen/stdout !/chosen/stdin");
352 device_tree_add_parsed(root
, "/chosen/memory */memory");
353 device_tree_add_parsed(root
, "/chosen/disk */iobus/disk");
356 #endif /* _EMUL_GENERIC_C_ */