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c906108c SS |
1 | /* This file is part of the program psim. |
2 | ||
3 | Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au> | |
4 | ||
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 | |
3fd725ef | 7 | the Free Software Foundation; either version 3 of the License, or |
c906108c SS |
8 | (at your option) any later version. |
9 | ||
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. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
51b318de | 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
c906108c SS |
17 | |
18 | */ | |
19 | ||
20 | ||
21 | #ifndef _OS_EMUL_C_ | |
22 | #define _OS_EMUL_C_ | |
23 | ||
24 | #include "cpu.h" | |
25 | #include "idecode.h" | |
26 | #include "os_emul.h" | |
27 | ||
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" | |
33 | ||
34 | static const os_emul *(os_emulations[]) = { | |
35 | &emul_chirp, | |
36 | &emul_bugapi, | |
37 | &emul_netbsd, | |
38 | &emul_solaris, | |
39 | &emul_linux, | |
40 | 0 | |
41 | }; | |
42 | ||
43 | ||
44 | INLINE_OS_EMUL\ | |
45 | (os_emul *) | |
46 | os_emul_create(const char *file_name, | |
47 | device *root) | |
48 | { | |
49 | const char *emulation_name = NULL; | |
50 | bfd *image; | |
51 | os_emul *chosen_emulation = NULL; | |
52 | ||
53 | bfd_init(); /* would never hurt */ | |
54 | ||
55 | /* open the file */ | |
56 | image = bfd_openr(file_name, NULL); | |
57 | if (image == NULL) { | |
58 | bfd_perror(file_name); | |
59 | error("nothing loaded\n"); | |
60 | } | |
61 | ||
62 | /* check it is an executable */ | |
63 | if (!bfd_check_format(image, bfd_object)) { | |
64 | TRACE(trace_tbd, | |
65 | ("FIXME - should check more than just bfd_check_format\n")); | |
66 | TRACE(trace_os_emul, | |
67 | ("%s not an executable, assumeing a device file\n", file_name)); | |
68 | bfd_close(image); | |
69 | image = NULL; | |
70 | } | |
71 | ||
72 | /* if a device file, load that before trying the emulations on */ | |
73 | if (image == NULL) { | |
74 | psim_merge_device_file(root, file_name); | |
75 | } | |
76 | ||
77 | /* see if the device tree already specifies the required emulation */ | |
78 | if (tree_find_property(root, "/openprom/options/os-emul") != NULL) | |
79 | emulation_name = | |
80 | tree_find_string_property(root, "/openprom/options/os-emul"); | |
81 | else | |
82 | emulation_name = NULL; | |
83 | ||
84 | /* go through each emulation to see if they reconize it. FIXME - | |
85 | should have some sort of imported table from a separate file */ | |
86 | { | |
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, | |
94 | image, | |
95 | emulation_name); | |
96 | if (emul_data != NULL) { | |
97 | chosen_emulation = ZALLOC(os_emul); | |
98 | *chosen_emulation = **possible_emulation; | |
99 | chosen_emulation->data = emul_data; | |
100 | } | |
101 | } | |
102 | } | |
103 | ||
104 | /* clean up */ | |
105 | if (image != NULL) | |
106 | bfd_close(image); | |
107 | return chosen_emulation; | |
108 | } | |
109 | ||
110 | INLINE_OS_EMUL\ | |
111 | (void) | |
112 | os_emul_init(os_emul *emulation, | |
113 | int nr_cpus) | |
114 | { | |
115 | if (emulation != (os_emul*)0) | |
116 | emulation->init(emulation->data, nr_cpus); | |
117 | } | |
118 | ||
119 | INLINE_OS_EMUL\ | |
120 | (void) | |
121 | os_emul_system_call(cpu *processor, | |
122 | unsigned_word cia) | |
123 | { | |
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); | |
127 | else | |
128 | error("System call emulation not available\n"); | |
129 | } | |
130 | ||
131 | INLINE_OS_EMUL\ | |
132 | (int) | |
133 | os_emul_instruction_call(cpu *processor, | |
134 | unsigned_word cia, | |
135 | unsigned_word ra) | |
136 | { | |
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); | |
140 | else | |
141 | return 0; | |
142 | } | |
143 | ||
144 | ||
145 | #endif /* _OS_EMUL_C_ */ |