Memory (Debugging with GDB) - sourceware. org Memory (Debugging with GDB)Each time you specify a unit size with x, that size becomes the default unit the next time you use x For the ‘ i ’ format, the unit size is ignored and is normally not written For the ‘ s ’ format, the unit size defaults to ‘ b ’, unless it is explicitly given Use x hs to display 16-bit char strings and x ws to display 32-bit strings The next use of
Debugging with GDB - Memory - GNU The default for addr is usually just after the last address examined--but several other commands also set the default address: info breakpoints (to the address of the last breakpoint listed), info line (to the starting address of a line), and print (if you use it to display a value from memory)
Debugging with GDB - Examining Data It specifies how much memory (counting by units u) to display The display format is one of the formats used by print, or `s' (null-terminated string) or `i' (machine instruction) The default is `x' (hexadecimal) initially, or the format from the last time you used either x or print The unit size is any of
How can gdb show both hex and ascii when examing memory? When using x 100c, the output shows the both ascii and decimal 0x111111: 40 '(' 40 '(' How can gdb show the ascii and hex at the same time ? like 0x111111: 0x28 'C' 0x28 'C' This format is
Examining Memory With a Debugger - Sonoma State University printf "format", var1, var2,… — Display the values of var1, var2,… The "format" string follows the same rules as the printf in the C Standard Library r — Begin execution of a program that has been loaded under control of gdb x nfs MemoryAddress — Display (examine) n values in memory in format f of size s starting at MemoryAddress
Memory - Debugging with GDB The encoding is set by the programming language and cannot be altered addr, starting display address addr is the address where you want gdb to begin displaying memory The expression need not have a pointer value (though it may); it is always interpreted as an integer address of a byte of memory See Expressions, for more information on
Output Formats (Debugging with GDB) - sourceware. org Output Formats (Debugging with GDB)By default, GDB prints a value according to its data type Sometimes this is not what you want For example, you might want to print a number in hex, or a pointer in decimal Or you might want to view data in memory at a certain address as a character string or as an instruction To do these things, specify an output format when you print a value