z/VM: CP Commands and Utilities Reference - z/VM - IBM

Usage Notes
Responses
altered registers assume a value within the range. The range may be a single
value or a pair of values separated by a period (.) or a hyphen (-). A hyphen
denotes a starting and ending range. A period denotes a starting range for a
byte count.
In ESA/390 or ESA/XC mode, range values are viewed as eight hexadecimal
digits. Wrap-around data ranges are not allowed. If no data range is specified
for general register alteration tracing, 0-FFFFFFFF is assumed.
In z/Architecture mode, range values are viewed as 16 hexadecimal digits. If no
data range is specified for general register alteration tracing,
00000000–FFFFFFFF_FFFFFFFF is assumed. Wrap-around data ranges are
not allowed. An optional delimiter (underscore) can be used to separate the two
words of a 16 hexadecimal digit input value. If the underscore delimiter is used
there must be exactly eight hexadecimal digits to the right of the delimiter.
Leading zeroes on the word to the left of the delimiter can be omitted.
MASK hexstring
specifies a hexadecimal string that forms a mask for data comparison. The
MASK string is logically applied to both the register and the data range before a
comparison is made.
In ESA/390 or ESA/XC mode, the mask string is eight hexadecimal digits. The
default is FFFFFFFF.
In z/Architecture mode, the mask string is 16 hexadecimal digits. The default is
FFFFFFFF_FFFFFFFF.
options
For an explanation of the options, see “TRACE: Options” on page 1604.
1. Your virtual machine runs very slowly after you enter the TRACE GG command.
2. For more information, see “Usage Notes” on page 1601.
TRACE GG
For response information, see “TRACE: Command Responses” on page 1610.
Chapter 2. CP Commands 1635