177 lines
4 KiB
C
177 lines
4 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 _EMUL_GENERIC_H_
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#define _EMUL_GENERIC_H_
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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 "tree.h"
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#include "bfd.h"
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#ifndef INLINE_EMUL_GENERIC
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#define INLINE_EMUL_GENERIC
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#endif
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/* various PowerPC instructions for writing into memory */
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enum {
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emul_call_instruction = 0x1,
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emul_loop_instruction = 0x48000000, /* branch to . */
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emul_rfi_instruction = 0x4c000064,
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emul_blr_instruction = 0x4e800020,
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};
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/* emulation specific data */
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typedef struct _os_emul_data os_emul_data;
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typedef os_emul_data *(os_emul_create_handler)
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(device *tree,
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bfd *image,
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const char *emul_name);
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typedef void (os_emul_init_handler)
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(os_emul_data *emul_data,
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int nr_cpus);
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typedef void (os_emul_system_call_handler)
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(cpu *processor,
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unsigned_word cia,
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os_emul_data *emul_data);
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typedef int (os_emul_instruction_call_handler)
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(cpu *processor,
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unsigned_word cia,
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unsigned_word ra,
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os_emul_data *emul_data);
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struct _os_emul {
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const char *name;
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os_emul_create_handler *create;
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os_emul_init_handler *init;
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os_emul_system_call_handler *system_call;
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os_emul_instruction_call_handler *instruction_call;
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os_emul_data *data;
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};
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/* One class of emulation - system call is pretty general, provide a
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common template for implementing this */
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typedef struct _emul_syscall emul_syscall;
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typedef struct _emul_syscall_descriptor emul_syscall_descriptor;
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typedef void (emul_syscall_handler)
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(os_emul_data *emul_data,
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unsigned call,
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const int arg0,
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cpu *processor,
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unsigned_word cia);
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struct _emul_syscall_descriptor {
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emul_syscall_handler *handler;
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const char *name;
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};
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struct _emul_syscall {
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emul_syscall_descriptor *syscall_descriptor;
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int nr_system_calls;
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char **error_names;
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int nr_error_names;
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char **signal_names;
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int nr_signal_names;
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};
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INLINE_EMUL_GENERIC void emul_do_system_call
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(os_emul_data *emul_data,
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emul_syscall *syscall,
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unsigned call,
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const int arg0,
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cpu *processor,
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unsigned_word cia);
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INLINE_EMUL_GENERIC unsigned64 emul_read_gpr64
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(cpu *processor,
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int g);
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INLINE_EMUL_GENERIC void emul_write_gpr64
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(cpu *processor,
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int g,
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unsigned64 val);
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INLINE_EMUL_GENERIC void emul_write_status
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(cpu *processor,
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int status,
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int errno);
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INLINE_EMUL_GENERIC void emul_write2_status
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(cpu *processor,
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int status1,
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int status2,
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int errno);
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INLINE_EMUL_GENERIC char *emul_read_string
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(char *dest,
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unsigned_word addr,
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unsigned nr_bytes,
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cpu *processor,
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unsigned_word cia);
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INLINE_EMUL_GENERIC unsigned_word emul_read_word
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(unsigned_word addr,
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cpu *processor,
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unsigned_word cia);
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INLINE_EMUL_GENERIC void emul_write_word
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(unsigned_word addr,
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unsigned_word buf,
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cpu *processor,
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unsigned_word cia);
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INLINE_EMUL_GENERIC void emul_read_buffer
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(void *dest,
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unsigned_word addr,
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unsigned nr_bytes,
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cpu *processor,
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unsigned_word cia);
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INLINE_EMUL_GENERIC void emul_write_buffer
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(const void *source,
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unsigned_word addr,
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unsigned nr_bytes,
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cpu *processor,
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unsigned_word cia);
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/* Simplify the construction of device trees */
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INLINE_EMUL_GENERIC void emul_add_tree_options
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(device *tree,
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bfd *image,
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const char *emul,
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const char *env,
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int oea_interrupt_prefix);
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INLINE_EMUL_GENERIC void emul_add_tree_hardware
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(device *tree);
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#endif /* _EMUL_GENERIC_H_ */
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