1 /* This file is part of the program psim.
3 Copyright (C) 1994-1997, 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 (tree_find_property(tree, "/options/little-endian?"))
264 little_endian = tree_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 tree_parse(tree, "/options/little-endian? %s",
273 little_endian ? "true" : "false");
276 /* misc other stuff */
277 tree_parse(tree, "/openprom/options/oea-memory-size 0x%x",
279 tree_parse(tree, "/openprom/options/oea-interrupt-prefix %d",
280 oea_interrupt_prefix);
281 tree_parse(tree, "/openprom/options/smp 1");
282 tree_parse(tree, "/openprom/options/env %s", env);
283 tree_parse(tree, "/openprom/options/os-emul %s", emul);
284 tree_parse(tree, "/openprom/options/strict-alignment? %s",
285 (WITH_ALIGNMENT == STRICT_ALIGNMENT)
287 tree_parse(tree, "/openprom/options/floating-point? %s",
288 WITH_FLOATING_POINT ? "true" : "false");
289 tree_parse(tree, "/openprom/options/use-stdio? %s",
290 ((WITH_STDIO == DO_USE_STDIO
292 ? "true" : "false"));
293 tree_parse(tree, "/openprom/options/model \"%s",
294 model_name[WITH_DEFAULT_MODEL]);
295 tree_parse(tree, "/openprom/options/model-issue %d",
301 INLINE_EMUL_GENERIC void
302 emul_add_tree_hardware(device *root)
305 int nr_cpus = tree_find_integer_property(root, "/openprom/options/smp");
307 /* sanity check the number of processors */
308 if (nr_cpus > MAX_NR_PROCESSORS)
309 error("Specified number of processors (%d) exceeds the number configured (%d).\n",
310 nr_cpus, MAX_NR_PROCESSORS);
312 /* set the number of address cells (1 or 2) */
313 tree_parse(root, "#address-cells %d", WITH_TARGET_WORD_BITSIZE / 32);
315 /* add some memory */
316 if (tree_find_device(root, "/memory") == NULL) {
317 unsigned_word memory_size =
318 tree_find_integer_property(root, "/openprom/options/oea-memory-size");
319 const unsigned_word avail_start = 0x3000;
320 tree_parse(root, "/memory@0/reg 0x0 0x%lx",
321 (unsigned long)memory_size);
322 /* reserve the first 0x3000 for the PowerPC interrupt table */
323 tree_parse(root, "/memory@0/available 0x%lx 0x%lx",
324 (unsigned long)avail_start,
325 (unsigned long)memory_size - avail_start);
329 for (i = 0; i < nr_cpus; i++) {
330 tree_parse(root, "/cpus/cpu@%d/cpu-nr %d", i, i);
333 /* the debugging pal - hide it in the openprom and don't attach it
335 tree_parse(root, "/openprom/pal");
338 tree_parse(root, "/chosen/stdin */openprom/pal");
339 tree_parse(root, "/chosen/stdout !/chosen/stdin");
340 tree_parse(root, "/chosen/memory */memory");
343 #endif /* _EMUL_GENERIC_C_ */