1 files changed, 72 insertions, 0 deletions
diff --git a/gdb/memattr.h b/gdb/memattr.h
new file mode 100644
index 00000000000..1af276b5169
--- /dev/null
+++ b/gdb/memattr.h
@@ -0,0 +1,72 @@
+/* memattr.h */
+#ifndef MEMATTR_H
+#define MEMATTR_H
+
+enum mem_access_mode
+{
+  MEM_RW,			/* read/write */
+  MEM_RO,			/* read only */
+  MEM_WO,			/* write only */
+};
+
+enum mem_access_width
+{
+  MEM_WIDTH_UNSPECIFIED,
+  MEM_WIDTH_8,			/*  8 bit accesses */
+  MEM_WIDTH_16,			/* 16  "      "    */
+  MEM_WIDTH_32,			/* 32  "      "    */
+  MEM_WIDTH_64			/* 64  "      "    */
+};
+
+/* The set of all attributes that can be set for a memory region.
+  
+   This structure was created so that memory attributes can be passed
+   to target_ functions without exposing the details of memory region
+   list, which would be necessary if these fields were simply added to
+   the mem_region structure.
+
+   FIXME: It would be useful if there was a mechanism for targets to
+   add their own attributes.  For example, the number of wait states. */
+ 
+struct mem_attrib 
+{
+  /* read/write, read-only, or write-only */
+  enum mem_access_mode mode;
+
+  enum mem_access_width width;
+
+  /* enables hardware breakpoints */
+  int hwbreak;
+  
+  /* enables host-side caching of memory region data */
+  int cache;
+  
+  /* enables memory verification.  after a write, memory is re-read
+     to verify that the write was successful. */
+  int verify; 
+};
+
+struct mem_region 
+{
+  /* FIXME: memory regions are stored in an unsorted singly-linked
+     list.  This probably won't scale to handle hundreds of memory
+     regions --- that many could be needed to describe the allowed
+     access modes for memory mapped i/o device registers. */
+  struct mem_region *next;
+  
+  CORE_ADDR lo;
+  CORE_ADDR hi;
+
+  /* Item number of this memory region. */
+  int number;
+
+  /* Status of this memory region (enabled or disabled) */
+  int status;
+
+  /* Attributes for this region */
+  struct mem_attrib attrib;
+};
+
+extern struct mem_region *lookup_mem_region(CORE_ADDR);
+
+#endif	/* MEMATTR_H */