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Diffstat (limited to 'gdb/memattr.h')
-rw-r--r-- | gdb/memattr.h | 72 |
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 */ |