(ddd.info)Examining Memory

---

Prev: Plotting Values Up: Examining Data

---

Enter node , (file) or (file)node

7.5 Examining Memory
====================

Using GDB or DBX, you can examine memory in any of several formats,
independently of your program's data types.  The item `Data => Memory'
pops up a panel where you can choose the format to be shown.

   In the panel, you can enter

   * a "repeat count", a decimal integer that specifies how much memory
     (counting by units) to display

   * a "display format"--one of

    `octal'
          Print as integer in octal

    `hex'
          Regard the bits of the value as an integer, and print the
          integer in hexadecimal.

    `decimal'
          Print as integer in signed decimal.

    `unsigned'
          Print as integer in unsigned decimal.

    `binary'
          Print as integer in binary.

    `float'
          Regard the bits of the value as a floating point number and
          print using typical floating point syntax.

    `address'
          Print as an address, both absolute in hexadecimal and as an
          offset from the nearest preceding symbol.

    `instruction'
          Print as machine instructions.  The unit size is ignored for
          this display format.

    `char'
          Regard as an integer and print it as a character constant.

    `string'
          Print as null-terminated string.  The unit size is ignored
          for this display format.

   * a "unit size"--one of

    `bytes'
          Bytes.

    `halfwords'
          Halfwords (two bytes).

    `words'
          Words (four bytes).

    `giants'
          Giant words (eight bytes).

   * an "address"--the starting display address.  The expression need
     not have a pointer value (though it may); it is always interpreted
     as an integer address of a byte of memory.

   There are two ways to examine the values:

   * You can dump the memory in the debugger console (using `Print').
     If you repeat the resulting `x' command by pressing <Return> in
     the debugger console (Note: Command History), the following area
     of memory is shown.

   * You can also display the memory dump in the data window (using
     `Display').  If you choose to display the values, the values will
     be updated automatically each time the program stop.