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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [sim/] [ppc/] [emul_generic.h] - Blame information for rev 205

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1 24 jeremybenn
/*  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 2 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, write to the Free Software
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    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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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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