Latest changes from Andrew

1 files changed, 158 insertions, 0 deletions

diff --git a/sim/ppc/emul_generic.h b/sim/ppc/emul_generic.h
new file mode 100644
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--- /dev/null
+++ b/sim/ppc/emul_generic.h
@@ -0,0 +1,158 @@
+/*  This file is part of the program psim.
+
+    Copyright (C) 1994-1995, 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 _EMUL_GENERIC_H_
+#define _EMUL_GENERIC_H_
+
+#include "cpu.h"
+#include "idecode.h"
+#include "os_emul.h"
+
+#include "bfd.h"
+
+#ifndef INLINE_EMUL_GENERIC
+#define INLINE_EMUL_GENERIC
+#endif
+
+/* various PowerPC instructions for writing into memory */
+enum {
+  emul_call_instruction = 0x1,
+  emul_loop_instruction = 0x48000000, /* branch to . */
+  emul_rfi_instruction = 0x4c000064,
+  emul_blr_instruction = 0x4e800020,
+};
+
+
+/* emulation specific data */
+
+typedef struct _os_emul_data os_emul_data;
+
+typedef os_emul_data *(os_emul_create_handler)
+     (device *tree,
+      bfd *image,
+      const char *emul_name);
+typedef void (os_emul_init_handler)
+     (os_emul_data *emul_data,
+      int nr_cpus);
+typedef void (os_emul_system_call_handler)
+     (cpu *processor,
+      unsigned_word cia,
+      os_emul_data *emul_data);
+typedef int (os_emul_instruction_call_handler)
+     (cpu *processor,
+      unsigned_word cia,
+      unsigned_word ra,
+      os_emul_data *emul_data);
+
+struct _os_emul {
+  const char *name;
+  os_emul_create_handler *create;
+  os_emul_init_handler *init;
+  os_emul_system_call_handler *system_call;
+  os_emul_instruction_call_handler *instruction_call;
+  os_emul_data *data;
+};
+
+
+/* One class of emulation - system call is pretty general, provide a
+   common template for implementing this */
+
+typedef struct _emul_syscall emul_syscall;
+typedef struct _emul_syscall_descriptor emul_syscall_descriptor;
+
+typedef void (emul_syscall_handler)
+     (os_emul_data *emul_data,
+      unsigned call,
+      const int arg0,
+      cpu *processor,
+      unsigned_word cia);
+
+struct _emul_syscall_descriptor {
+  emul_syscall_handler *handler;
+  const char *name;
+};
+
+struct _emul_syscall {
+  emul_syscall_descriptor *syscall_descriptor;
+  int nr_system_calls;
+  char **error_names;
+  int nr_error_names;
+  char **signal_names;
+  int nr_signal_names;
+};
+
+
+INLINE_EMUL_GENERIC void emul_do_system_call
+(os_emul_data *emul_data,
+ emul_syscall *syscall,
+ unsigned call,
+ const int arg0,
+ cpu *processor,
+ unsigned_word cia);
+
+
+INLINE_EMUL_GENERIC unsigned64 emul_read_gpr64
+(cpu *processor,
+ int g);
+
+INLINE_EMUL_GENERIC void emul_write_gpr64
+(cpu *processor,
+ int g,
+ unsigned64 val);
+
+INLINE_EMUL_GENERIC void emul_write_status
+(cpu *processor,
+ int status,
+ int errno);
+
+INLINE_EMUL_GENERIC char *emul_read_string
+(char *dest,
+ unsigned_word addr,
+ unsigned nr_bytes,
+ cpu *processor,
+ unsigned_word cia);
+
+INLINE_EMUL_GENERIC unsigned_word emul_read_word
+(unsigned_word addr,
+ cpu *processor,
+ unsigned_word cia);
+ 
+INLINE_EMUL_GENERIC void emul_write_word
+(unsigned_word addr,
+ unsigned_word buf,
+ cpu *processor,
+ unsigned_word cia);
+ 
+INLINE_EMUL_GENERIC void emul_read_buffer
+(void *dest,
+ unsigned_word addr,
+ unsigned nr_bytes,
+ cpu *processor,
+ unsigned_word cia);
+
+INLINE_EMUL_GENERIC void emul_write_buffer
+(const void *source,
+ unsigned_word addr,
+ unsigned nr_bytes,
+ cpu *processor,
+ unsigned_word cia);
+
+#endif /* _EMUL_GENERIC_H_ */