Type options
Commands like read, write,
search and measure deal with values that
can be configured with a common set of options. These are known as type
options.
To choose a type you pass the appropriately named --type
option one of the following values:
byte
integer
ieee754
text
address
x86
arm
sparc
powerpc
mips
The following sections will describe each type and their specific options individually.
Byte
This is the most basic type of them all. It represents a unit
of memory. Its size is always 1. When printed, the sequence of
bits that form it are represented as an unsigned integer in
hexadecimal notation.
This type does not have specific options.
Integer
An integer number can be represented in various ways. Proctal
supports 8, 16, 32 and 64 bit wide integers, either unsigned or
using the two's complement representation for negative numbers
and either in little or big endian. It's printed with decimal
numbers.
The --integer-endianness option can be used
to set the endianness. You can choose between
big and little.
The --integer-bits option can be used to set
the number of bits. Only 8, 16,
32 and 64 are supported at the
moment.
The --integer-sign option can be used to set
the sign representation. twos-complement uses
two's complement. unsigned disregards signing
altogether.
By default an integer is 8-bit, signed using two's complement
and using the same endianness that the system uses.
IEEE754
These numbers are represented as defined by the IEEE 754-1985
standard. It's printed with decimal numbers.
The --ieee754-precision option allows you to
pick the precision. You may use single,
double or extended.
By the default a floating point number uses single precision.
Text
Text is a single character from a character set. It's printed
in UTF-8.
The --text-encoding option defines the
charater set to use. At the moment the only value that is
supported is ascii.
By default text uses the ASCII encoding.
Address
This represents a memory address in the computer. It's printed
in hexadecimal notation.
This type does not have type specific options.
x86
Represents an x86 CPU instruction. It's printed in assembly.
The --x86-mode option lets you set the mode. You
may use 16, 32 and
64 for 16-bit, 32-bit and 64-bit mode,
respectively.
The --x86-syntax option defines the syntax for
assembly. You may use either att or
intel. By default intel is used.
ARM
An ARM A32/T32 or A64 CPU instruction.
The --arm-mode option lets you choose between
a32, t32 and a64.
--arm-endianness lets you set the endianness. It
can be little or big.
SPARC
A SPARC CPU instruction.
The --sparc-mode option lets you choose between
32, 64.
--arm-endianness lets you set the endianness. It
can be little or big.
PowerPC
A PowerPC CPU instruction.
The --powerpc-mode option lets you choose
between 32 and 64.
--powerpc-endianness lets you set the
endianness. It can be little or
big.
MIPS
A MIPS CPU instruction.
The --mips-mode option lets you choose between
32 and 64.
--mips-endianness lets you set the endianness.
It can be little or big.