| 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 |
| 7 | the Free Software Foundation; either version 3 of the License, or |
| 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 |
| 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
| 17 | |
| 18 | */ |
| 19 | |
| 20 | |
| 21 | #ifndef _EMUL_GENERIC_H_ |
| 22 | #define _EMUL_GENERIC_H_ |
| 23 | |
| 24 | #include "cpu.h" |
| 25 | #include "idecode.h" |
| 26 | #include "os_emul.h" |
| 27 | |
| 28 | #include "tree.h" |
| 29 | |
| 30 | #include "bfd.h" |
| 31 | |
| 32 | #ifndef INLINE_EMUL_GENERIC |
| 33 | #define INLINE_EMUL_GENERIC |
| 34 | #endif |
| 35 | |
| 36 | /* various PowerPC instructions for writing into memory */ |
| 37 | enum { |
| 38 | emul_call_instruction = 0x1, |
| 39 | emul_loop_instruction = 0x48000000, /* branch to . */ |
| 40 | emul_rfi_instruction = 0x4c000064, |
| 41 | emul_blr_instruction = 0x4e800020, |
| 42 | }; |
| 43 | |
| 44 | |
| 45 | /* emulation specific data */ |
| 46 | |
| 47 | typedef struct _os_emul_data os_emul_data; |
| 48 | |
| 49 | typedef os_emul_data *(os_emul_create_handler) |
| 50 | (device *tree, |
| 51 | bfd *image, |
| 52 | const char *emul_name); |
| 53 | typedef void (os_emul_init_handler) |
| 54 | (os_emul_data *emul_data, |
| 55 | int nr_cpus); |
| 56 | typedef void (os_emul_system_call_handler) |
| 57 | (cpu *processor, |
| 58 | unsigned_word cia, |
| 59 | os_emul_data *emul_data); |
| 60 | typedef int (os_emul_instruction_call_handler) |
| 61 | (cpu *processor, |
| 62 | unsigned_word cia, |
| 63 | unsigned_word ra, |
| 64 | os_emul_data *emul_data); |
| 65 | |
| 66 | struct _os_emul { |
| 67 | const char *name; |
| 68 | os_emul_create_handler *create; |
| 69 | os_emul_init_handler *init; |
| 70 | os_emul_system_call_handler *system_call; |
| 71 | os_emul_instruction_call_handler *instruction_call; |
| 72 | os_emul_data *data; |
| 73 | }; |
| 74 | |
| 75 | |
| 76 | /* One class of emulation - system call is pretty general, provide a |
| 77 | common template for implementing this */ |
| 78 | |
| 79 | typedef struct _emul_syscall emul_syscall; |
| 80 | typedef struct _emul_syscall_descriptor emul_syscall_descriptor; |
| 81 | |
| 82 | typedef void (emul_syscall_handler) |
| 83 | (os_emul_data *emul_data, |
| 84 | unsigned call, |
| 85 | const int arg0, |
| 86 | cpu *processor, |
| 87 | unsigned_word cia); |
| 88 | |
| 89 | struct _emul_syscall_descriptor { |
| 90 | emul_syscall_handler *handler; |
| 91 | const char *name; |
| 92 | }; |
| 93 | |
| 94 | struct _emul_syscall { |
| 95 | emul_syscall_descriptor *syscall_descriptor; |
| 96 | int nr_system_calls; |
| 97 | char **error_names; |
| 98 | int nr_error_names; |
| 99 | char **signal_names; |
| 100 | int nr_signal_names; |
| 101 | }; |
| 102 | |
| 103 | |
| 104 | INLINE_EMUL_GENERIC void emul_do_system_call |
| 105 | (os_emul_data *emul_data, |
| 106 | emul_syscall *syscall, |
| 107 | unsigned call, |
| 108 | const int arg0, |
| 109 | cpu *processor, |
| 110 | unsigned_word cia); |
| 111 | |
| 112 | |
| 113 | INLINE_EMUL_GENERIC unsigned64 emul_read_gpr64 |
| 114 | (cpu *processor, |
| 115 | int g); |
| 116 | |
| 117 | INLINE_EMUL_GENERIC void emul_write_gpr64 |
| 118 | (cpu *processor, |
| 119 | int g, |
| 120 | unsigned64 val); |
| 121 | |
| 122 | INLINE_EMUL_GENERIC void emul_write_status |
| 123 | (cpu *processor, |
| 124 | int status, |
| 125 | int errno); |
| 126 | |
| 127 | INLINE_EMUL_GENERIC void emul_write2_status |
| 128 | (cpu *processor, |
| 129 | int status1, |
| 130 | int status2, |
| 131 | int errno); |
| 132 | |
| 133 | INLINE_EMUL_GENERIC char *emul_read_string |
| 134 | (char *dest, |
| 135 | unsigned_word addr, |
| 136 | unsigned nr_bytes, |
| 137 | cpu *processor, |
| 138 | unsigned_word cia); |
| 139 | |
| 140 | INLINE_EMUL_GENERIC unsigned_word emul_read_word |
| 141 | (unsigned_word addr, |
| 142 | cpu *processor, |
| 143 | unsigned_word cia); |
| 144 | |
| 145 | INLINE_EMUL_GENERIC void emul_write_word |
| 146 | (unsigned_word addr, |
| 147 | unsigned_word buf, |
| 148 | cpu *processor, |
| 149 | unsigned_word cia); |
| 150 | |
| 151 | INLINE_EMUL_GENERIC void emul_read_buffer |
| 152 | (void *dest, |
| 153 | unsigned_word addr, |
| 154 | unsigned nr_bytes, |
| 155 | cpu *processor, |
| 156 | unsigned_word cia); |
| 157 | |
| 158 | INLINE_EMUL_GENERIC void emul_write_buffer |
| 159 | (const void *source, |
| 160 | unsigned_word addr, |
| 161 | unsigned nr_bytes, |
| 162 | cpu *processor, |
| 163 | unsigned_word cia); |
| 164 | |
| 165 | /* Simplify the construction of device trees */ |
| 166 | |
| 167 | INLINE_EMUL_GENERIC void emul_add_tree_options |
| 168 | (device *tree, |
| 169 | bfd *image, |
| 170 | const char *emul, |
| 171 | const char *env, |
| 172 | int oea_interrupt_prefix); |
| 173 | |
| 174 | INLINE_EMUL_GENERIC void emul_add_tree_hardware |
| 175 | (device *tree); |
| 176 | |
| 177 | #endif /* _EMUL_GENERIC_H_ */ |