first stage in function unit support; add new switches & latest code from andrew

1 files changed, 230 insertions, 0 deletions

diff --git a/sim/ppc/emul_generic.c b/sim/ppc/emul_generic.c
new file mode 100644
index 0000000..f764205
--- /dev/null
+++ b/sim/ppc/emul_generic.c
@@ -0,0 +1,230 @@
+/*  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.
+ 
+    ----
+
+    Code to output system call traces Copyright (C) 1991 Gordon Irlam.
+    All rights reserved.
+
+    This tool is part of the Spa(7) package.  The Spa(7) package
+    may  be redistributed and/or modified under the terms of the
+    GNU General Public License Version 2 (GPL(7))  as  published
+    by the Free Software Foundation.
+
+    */
+
+
+#ifndef _EMUL_GENERIC_C_
+#define _EMUL_GENERIC_C_
+
+#include "emul_generic.h"
+
+#ifndef STATIC_INLINE_EMUL_GENERIC
+#define STATIC_INLINE_EMUL_GENERIC STATIC_INLINE
+#endif
+
+
+INLINE_EMUL_GENERIC void
+emul_enter_call(emulation *emul,
+		int call,
+		int arg0,
+		cpu *processor,
+		unsigned_word cia)
+{
+  printf_filtered("%d:0x%x:%s(",
+		  cpu_nr(processor) + 1,
+		  cia, 
+		  emul->call_descriptor[call].name);
+}
+
+
+INLINE_EMUL_GENERIC void
+emul_exit_call(emulation *emul,
+	       int call,
+	       int arg0,
+	       cpu *processor,
+	       unsigned_word cia)
+{
+  int status = cpu_registers(processor)->gpr[3];
+  int error = cpu_registers(processor)->gpr[0];
+  printf_filtered(")=%d", status);
+  if (error > 0 && error < emul->nr_error_names)
+    printf_filtered("[%s]",
+		    emul->error_names[cpu_registers(processor)->gpr[0]]);
+  printf_filtered("\n");
+}
+
+
+INLINE_EMUL_GENERIC unsigned64
+emul_read_gpr64(cpu *processor,
+		int g)
+{
+  unsigned32 hi;
+  unsigned32 lo;
+  if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) {
+    hi = cpu_registers(processor)->gpr[g];
+    lo = cpu_registers(processor)->gpr[g+1];
+  }
+  else {
+    lo = cpu_registers(processor)->gpr[g];
+    hi = cpu_registers(processor)->gpr[g+1];
+  }
+  return (INSERTED64(hi, 0, 31) | INSERTED64(lo, 32, 63));
+}
+
+
+INLINE_EMUL_GENERIC void
+emul_write_gpr64(cpu *processor,
+		 int g,
+		 unsigned64 val)
+{
+  unsigned32 hi = EXTRACTED64(val, 0, 31);
+  unsigned32 lo = EXTRACTED64(val, 32, 63);
+  if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) {
+    cpu_registers(processor)->gpr[g] = hi;
+    cpu_registers(processor)->gpr[g+1] = lo;
+  }
+  else {
+    cpu_registers(processor)->gpr[g] = lo;
+    cpu_registers(processor)->gpr[g+1] = hi;
+  }
+}
+
+
+INLINE_EMUL_GENERIC char *
+emul_read_string(char *dest,
+		 unsigned_word addr,
+		 unsigned nr_bytes,
+		 cpu *processor,
+		 unsigned_word cia)
+{
+  unsigned nr_moved = 0;
+  if (addr == 0)
+    return NULL;
+  while (1) {
+    if (vm_data_map_read_buffer(cpu_data_map(processor),
+				&dest[nr_moved],
+				addr + nr_moved,
+				sizeof(dest[nr_moved]))
+	!= sizeof(dest[nr_moved]))
+      return NULL;
+    if (dest[nr_moved] == '\0' || nr_moved >= nr_bytes)
+      break;
+    nr_moved++;
+  }
+  dest[nr_moved] = '\0';
+  return dest;
+}
+
+
+INLINE_EMUL_GENERIC void
+emul_write_status(cpu *processor,
+		  int status,
+		  int errno)
+{
+  cpu_registers(processor)->gpr[3] = status;
+  if (status < 0)
+    cpu_registers(processor)->gpr[0] = errno;
+  else
+    cpu_registers(processor)->gpr[0] = 0;
+}
+
+
+INLINE_EMUL_GENERIC void
+emul_write_word(unsigned_word addr,
+		unsigned_word buf,
+		cpu *processor,
+		unsigned_word cia)
+{
+  int nr_moved;
+  H2T(buf);
+  nr_moved = vm_data_map_write_buffer(cpu_data_map(processor),
+				      &buf,
+				      addr,
+				      sizeof(buf),
+				      0/*violate_ro*/);
+  if (nr_moved != sizeof(buf)) {
+    printf_filtered("emul_write_word() write failed, %d out of %d written\n",
+		    nr_moved, sizeof(buf));
+    cpu_halt(processor, cia, was_exited, 14/*EFAULT*/);
+  }
+}
+
+
+INLINE_EMUL_GENERIC void
+emul_write_buffer(const void *source,
+		  unsigned_word addr,
+		  unsigned nr_bytes,
+		  cpu *processor,
+		  unsigned_word cia)
+{
+  int nr_moved = vm_data_map_write_buffer(cpu_data_map(processor),
+					  source,
+					  addr,
+					  nr_bytes,
+					  0/*violate_ro*/);
+  if (nr_moved != nr_bytes) {
+    printf_filtered("emul_write_buffer() write failed %d out of %d written\n",
+		    nr_moved, nr_bytes);
+    cpu_halt(processor, cia, was_exited, 14/*EFAULT*/);
+  }
+}
+
+
+INLINE_EMUL_GENERIC void
+emul_read_buffer(void *dest,
+		 unsigned_word addr,
+		 unsigned nr_bytes,
+		 cpu *processor,
+		 unsigned_word cia)
+{
+  int nr_moved = vm_data_map_read_buffer(cpu_data_map(processor),
+					 dest,
+					 addr,
+					 nr_bytes);
+  if (nr_moved != nr_bytes) {
+    printf_filtered("emul_read_buffer() read failed %d out of %d read\n",
+		    nr_moved, nr_bytes);
+    cpu_halt(processor, cia, was_exited, 14/*EFAULT*/);
+  }
+}
+
+
+INLINE_EMUL_GENERIC void
+emul_do_call(emulation *emul,
+	     unsigned call,
+	     const int arg0,
+	     cpu *processor,
+	     unsigned_word cia)
+{
+  emul_call_handler *handler = NULL;
+  if (call >= emul->nr_system_calls)
+    error("do_call() os_emul call %d out-of-range\n", call);
+
+  handler = emul->call_descriptor[call].handler;
+  if (handler == NULL)
+    error("do_call() unimplemented call %d\n", call);
+
+  ENTER_CALL;
+  cpu_registers(processor)->gpr[0] = 0; /* default success */
+  handler(emul, call, arg0, processor, cia);
+  EXIT_CALL;
+}
+
+
+#endif /* _SYSTEM_C_ */