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m68k/gdbserver/m68k-bdm-low.h

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+/* BDM/m68k specific low level interface, for the remote server for GDB.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   Copyright (C) 2008 Chris Johns (chrisj@rtems.org).
+
+   This file is part of M68K BDM.
+
+   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 3 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, see <http://www.gnu.org/licenses/>.
+
+   The code in the this file is based on the GDB server code in GDB and
+   the code in M68K BDM GDB patch file called 'remote-m68k-bdm.c'.
+   Based on:
+    1. `A Background Debug Mode Driver Package for Motorola's
+       16-bit and 32-Bit Microcontrollers', Scott Howard, Motorola
+       Canada, 1993.
+    2. `Linux device driver for public domain BDM Interface',
+       M. Schraut, Technische Universitaet Muenchen, Lehrstuhl
+       fuer Prozessrechner, 1995.                                      */
+
+#if !defined (M68K_BDM_LOW_H)
+#define M68K_BDM_LOW_H
+
+#include "regdef.h"
+#include "BDMlib.h"
+
+/*
+ * Mark a register as a control register using this define.
+ */
+#define BDM_REG_CONTROL_REG      (1 << 31)
+#define BDM_REG_CONTROL_REG_MASK (~(1 << 31))
+#define BDM_REG_CTRL(r)          (BDM_REG_CONTROL_REG | (r))
+
+/*
+ * Mark a register as a debug register using this define.
+ */
+#define BDM_REG_DEBUG_REG      (1 << 30)
+#define BDM_REG_DEBUG_REG_MASK (~(1 << 30))
+#define BDM_REG_DEBUG(r)       (BDM_REG_DEBUG_REG | (r))
+
+/*
+ * Mark a register as virtual or not present.
+ */
+#define BDM_REG_VIRTUAL_REG      (1 << 29)
+#define BDM_REG_VIRTUAL_REG_MASK (~(1 << 29))
+#define BDM_REG_VIRT(r)          (BDM_REG_VIRTUAL_REG | (r))
+
+#define BDM_REG_MASK \
+  (~(BDM_REG_CONTROL_REG | BDM_REG_DEBUG_REG | BDM_REG_VIRTUAL_REG))
+
+/*
+ * Types of registers.
+ */
+#define M68K_BDM_REG_TYPE_INT32         (0)
+#define M68K_BDM_REG_TYPE_UINT32        (1)
+#define M68K_BDM_REG_TYPE_VOID_DATA_PTR (2)
+#define M68K_BDM_REG_TYPE_M68881_EXT    (3)
+
+/*
+ * The Coldfire VBR is write only.
+ */
+#define M68K_BDM_CF_VBR_FLAGS (REG_NON_CACHEABLE | REG_WRITE_ONLY)
+
+/*
+ * Hold a mapping from a register number to a register type
+ * and device number type. The register number comes from the
+ * register name.
+ */
+struct m68k_bdm_reg_mapping
+{
+  const char*  name;
+  int          type;
+  int          num;
+  unsigned int code;
+  unsigned int flags; 
+};
+
+/*
+ * The number of registers.
+ */
+#define M68K_BDM_REG_NUMBER(_m) (sizeof (_m) / sizeof (struct m68k_bdm_reg_mapping))
+
+#endif