1 /* This file is part of the program psim.
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 3 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, see <http://www.gnu.org/licenses/>.
28 #include "emul_generic.h"
29 #include "emul_netbsd.h"
30 #include "emul_unix.h"
31 #include "emul_chirp.h"
32 #include "emul_bugapi.h"
34 static const os_emul *(os_emulations[]) = {
46 os_emul_create(const char *file_name,
49 const char *emulation_name = NULL;
51 os_emul *chosen_emulation = NULL;
53 bfd_init(); /* would never hurt */
56 image = bfd_openr(file_name, NULL);
58 bfd_perror(file_name);
59 error("nothing loaded\n");
62 /* check it is an executable */
63 if (!bfd_check_format(image, bfd_object)) {
65 ("FIXME - should check more than just bfd_check_format\n"));
67 ("%s not an executable, assumeing a device file\n", file_name));
72 /* if a device file, load that before trying the emulations on */
74 psim_merge_device_file(root, file_name);
77 /* see if the device tree already specifies the required emulation */
78 if (tree_find_property(root, "/openprom/options/os-emul") != NULL)
80 tree_find_string_property(root, "/openprom/options/os-emul");
82 emulation_name = NULL;
84 /* go through each emulation to see if they reconize it. FIXME -
85 should have some sort of imported table from a separate file */
87 os_emul_data *emul_data;
88 const os_emul **possible_emulation;
89 chosen_emulation = NULL;
90 for (possible_emulation = os_emulations, emul_data = NULL;
91 *possible_emulation != NULL && emul_data == NULL;
92 possible_emulation++) {
93 emul_data = (*possible_emulation)->create(root,
96 if (emul_data != NULL) {
97 chosen_emulation = ZALLOC(os_emul);
98 *chosen_emulation = **possible_emulation;
99 chosen_emulation->data = emul_data;
107 return chosen_emulation;
112 os_emul_init(os_emul *emulation,
115 if (emulation != (os_emul*)0)
116 emulation->init(emulation->data, nr_cpus);
121 os_emul_system_call(cpu *processor,
124 os_emul *emulation = cpu_os_emulation(processor);
125 if (emulation != (os_emul*)0 && emulation->system_call != 0)
126 emulation->system_call(processor, cia, emulation->data);
128 error("System call emulation not available\n");
133 os_emul_instruction_call(cpu *processor,
137 os_emul *emulation = cpu_os_emulation(processor);
138 if (emulation != (os_emul*)0 && emulation->instruction_call != 0)
139 return emulation->instruction_call(processor, cia, ra, emulation->data);
145 #endif /* _OS_EMUL_C_ */