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146 lines
3.7 KiB
C
146 lines
3.7 KiB
C
/* This file is part of the program psim.
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Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _OS_EMUL_C_
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#define _OS_EMUL_C_
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#include "cpu.h"
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#include "idecode.h"
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#include "os_emul.h"
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#include "emul_generic.h"
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#include "emul_netbsd.h"
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#include "emul_unix.h"
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#include "emul_chirp.h"
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#include "emul_bugapi.h"
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static const os_emul *(os_emulations[]) = {
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&emul_chirp,
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&emul_bugapi,
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&emul_netbsd,
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&emul_solaris,
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&emul_linux,
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0
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};
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INLINE_OS_EMUL\
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(os_emul *)
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os_emul_create(const char *file_name,
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device *root)
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{
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const char *emulation_name = NULL;
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bfd *image;
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os_emul *chosen_emulation = NULL;
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bfd_init(); /* would never hurt */
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/* open the file */
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image = bfd_openr(file_name, NULL);
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if (image == NULL) {
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bfd_perror(file_name);
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error("nothing loaded\n");
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}
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/* check it is an executable */
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if (!bfd_check_format(image, bfd_object)) {
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TRACE(trace_tbd,
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("FIXME - should check more than just bfd_check_format\n"));
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TRACE(trace_os_emul,
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("%s not an executable, assumeing a device file\n", file_name));
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bfd_close(image);
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image = NULL;
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}
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/* if a device file, load that before trying the emulations on */
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if (image == NULL) {
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psim_merge_device_file(root, file_name);
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}
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/* see if the device tree already specifies the required emulation */
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if (tree_find_property(root, "/openprom/options/os-emul") != NULL)
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emulation_name =
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tree_find_string_property(root, "/openprom/options/os-emul");
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else
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emulation_name = NULL;
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/* go through each emulation to see if they reconize it. FIXME -
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should have some sort of imported table from a separate file */
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{
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os_emul_data *emul_data;
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const os_emul **possible_emulation;
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chosen_emulation = NULL;
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for (possible_emulation = os_emulations, emul_data = NULL;
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*possible_emulation != NULL && emul_data == NULL;
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possible_emulation++) {
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emul_data = (*possible_emulation)->create(root,
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image,
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emulation_name);
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if (emul_data != NULL) {
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chosen_emulation = ZALLOC(os_emul);
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*chosen_emulation = **possible_emulation;
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chosen_emulation->data = emul_data;
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}
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}
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}
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/* clean up */
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if (image != NULL)
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bfd_close(image);
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return chosen_emulation;
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}
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INLINE_OS_EMUL\
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(void)
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os_emul_init(os_emul *emulation,
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int nr_cpus)
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{
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if (emulation != (os_emul*)0)
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emulation->init(emulation->data, nr_cpus);
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}
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INLINE_OS_EMUL\
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(void)
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os_emul_system_call(cpu *processor,
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unsigned_word cia)
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{
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os_emul *emulation = cpu_os_emulation(processor);
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if (emulation != (os_emul*)0 && emulation->system_call != 0)
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emulation->system_call(processor, cia, emulation->data);
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else
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error("System call emulation not available\n");
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}
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INLINE_OS_EMUL\
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(int)
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os_emul_instruction_call(cpu *processor,
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unsigned_word cia,
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unsigned_word ra)
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{
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os_emul *emulation = cpu_os_emulation(processor);
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if (emulation != (os_emul*)0 && emulation->instruction_call != 0)
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return emulation->instruction_call(processor, cia, ra, emulation->data);
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else
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return 0;
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}
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#endif /* _OS_EMUL_C_ */
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