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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [sim/] [ppc/] [os_emul.c] - Rev 828
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/* This file is part of the program psim. Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef _OS_EMUL_C_ #define _OS_EMUL_C_ #include "cpu.h" #include "idecode.h" #include "os_emul.h" #include "emul_generic.h" #include "emul_netbsd.h" #include "emul_unix.h" #include "emul_chirp.h" #include "emul_bugapi.h" static const os_emul *(os_emulations[]) = { &emul_chirp, &emul_bugapi, &emul_netbsd, &emul_solaris, &emul_linux, 0 }; INLINE_OS_EMUL\ (os_emul *) os_emul_create(const char *file_name, device *root) { const char *emulation_name = NULL; bfd *image; os_emul *chosen_emulation = NULL; bfd_init(); /* would never hurt */ /* open the file */ image = bfd_openr(file_name, NULL); if (image == NULL) { bfd_perror(file_name); error("nothing loaded\n"); } /* check it is an executable */ if (!bfd_check_format(image, bfd_object)) { TRACE(trace_tbd, ("FIXME - should check more than just bfd_check_format\n")); TRACE(trace_os_emul, ("%s not an executable, assumeing a device file\n", file_name)); bfd_close(image); image = NULL; } /* if a device file, load that before trying the emulations on */ if (image == NULL) { psim_merge_device_file(root, file_name); } /* see if the device tree already specifies the required emulation */ if (tree_find_property(root, "/openprom/options/os-emul") != NULL) emulation_name = tree_find_string_property(root, "/openprom/options/os-emul"); else emulation_name = NULL; /* go through each emulation to see if they reconize it. FIXME - should have some sort of imported table from a separate file */ { os_emul_data *emul_data; const os_emul **possible_emulation; chosen_emulation = NULL; for (possible_emulation = os_emulations, emul_data = NULL; *possible_emulation != NULL && emul_data == NULL; possible_emulation++) { emul_data = (*possible_emulation)->create(root, image, emulation_name); if (emul_data != NULL) { chosen_emulation = ZALLOC(os_emul); *chosen_emulation = **possible_emulation; chosen_emulation->data = emul_data; } } } /* clean up */ if (image != NULL) bfd_close(image); return chosen_emulation; } INLINE_OS_EMUL\ (void) os_emul_init(os_emul *emulation, int nr_cpus) { if (emulation != (os_emul*)0) emulation->init(emulation->data, nr_cpus); } INLINE_OS_EMUL\ (void) os_emul_system_call(cpu *processor, unsigned_word cia) { os_emul *emulation = cpu_os_emulation(processor); if (emulation != (os_emul*)0 && emulation->system_call != 0) emulation->system_call(processor, cia, emulation->data); else error("System call emulation not available\n"); } INLINE_OS_EMUL\ (int) os_emul_instruction_call(cpu *processor, unsigned_word cia, unsigned_word ra) { os_emul *emulation = cpu_os_emulation(processor); if (emulation != (os_emul*)0 && emulation->instruction_call != 0) return emulation->instruction_call(processor, cia, ra, emulation->data); else return 0; } #endif /* _OS_EMUL_C_ */
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