Integral Types

The syntax for linker command file expressions is very similar to the syntax of the C programming language. All integer types are long or unsigned long.

Octal integers (commonly know as base eight integers) are specified with a leading zero, followed by numeral in the range of zero through seven. The following listing shows valid octal patterns that you can put into your linker command file.

Listing: Sample Octal patterns

  _octal_number  = 012;
  
  _octal_number2 = 03245;

Decimal integers are specified as a non-zero numeral, followed by numerals in the range of zero through nine. To create a negative integer, use the minus sign (-) in front of the number. The following listing shows examples of valid decimal integers that you can write into your linker command file.

Listing: Sample Decimal integers

  _dec_num       = 9999;
  
  _decimalNumber = -1234;

Hexadecimal (base sixteen) integers are specified as 0x or 0X (a zero with an X), followed by numerals in the range of zero through nine, and/or characters A through F. Examples of valid hexadecimal integers that you can put in your linker command file appear in the following listing.

Listing: Sample Hex integers

_somenumber       = 0x0F21;

_fudgefactorspace = 0XF00D;

_hexonyou         = 0xcafe;

Note: When assigning a value to a pointer variable, the value is in byte units despite that in the linked map (.xMAP file), the variable value appears in word units.