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Facilidade de uso
Controlling Breakpoints (Cont.)
Displaying and Modifying Process Information (Cont.)
Command Syntax Elements
• condition breakpoint-number [conditional-
• modify native-address value {8 | 16 | 32 | 64} (or
• Linespec - Specifies a single source line with the list or
expression] - Specifies a conditional expression for
info with registers) - Changes the content of memory.
breakpoint commands, using:
evaluation at a specific breakpoint.
• print - [/format] expressions Evaluates and display the
number - A line number in the current file.
• delete [breakpoints] [breakpoint-number ...] -
value of a specified expression (saves the result in value
filename:number - A line number in the source.
Deletes instruction breakpoints
history).
function - A line at which the body of the function begins.
•
•
disable [breakpoints] [breakpoint-number ... ]
reg - Displays registers.
filename:function - The line at which the body of the
- Disables specified breakpoints
•
specified function begins.
set [variable] var-name {expression | value}
•
(Variable) - Evaluates an expression and assigns its value to a
dmab [-g] - Deletes a memory access breakpoint (MAB).
variable.
*address - The line containing the program address.
• enable [once | delete] [breakpoint-number ...]
•
• native-address - Specifies a 32-bit or 64-bit address, using
- Enables breakpoints that have been disabled.
x [/format] address - Examines memory at a specified
the fol owing:
address.
•
ignore breakpoint-number ignore-count - Sets the
Hexadecimal (for example, 0x120001DC0).
number of breakpoint hits to ignore.
Displaying and Selecting Stack Information
Decimal (for example, 48331845824).
•
• {bt | tn} [count] - Prints a backtrace of all the stack
Octal (for example, 044000016700).
info breakpoints - Lists information about all user-
defined breakpoints (including per-process breakpoints,
frames.
• llce - Specifies a low-level conditional expression to set
global breakpoints, and catch events.).
•
conditional breakpoints with the break, tbreak, or mab
{down | down-silently} count - Selects the stack frame
commands as follows:
•
that is called by the selected stack frame.
mab [{*native address | variable}
-e native-address [& mask] operator value
[size][flags] [-e linespec]] - Sets a memory access
• {frame | select-frame} [number] - Selects a specified
breakpoint (MAB).
stack frame.
mask is a 64-bit mask.
•
operator is one of !=, ==, < or >.
info attribute (with the frame option) - Displays
Displaying and Modifying Process Information
information about frames and registers.
•
value is an integer.
a native-address [count] - Displays memory in ASCI
•
format.
tj native-address - Traces the stack from a TNS/E native
• expression - Specifies a list of operands and operators for
jump buffer contained at the specified address.
evaluation. Other valid expressions are:
• d native-address [count] [:format] - Displays
•
memory in a specified format.
tu native-address - Traces the stack from a ucontext
$, $$ - Refers to the last two values printed.
buffer contained at the specified address.
•
$number - References previous print commands.
delete display [num] - Removes an expression from the
• {up | up-silently} count - Selects the stack frame that
automatic display list.
$register-name - Displays register contents.
called the currently selected stack frame.
• /format - Specifies a repeat count with the x, print, and
• disable display [num] - Disables automatic display
Using Object and Symbol Files
output commands as fol ows: /[count][format][size]
items.
• {add-symbol-file | symbol-file} filename
count - An integer specifying the number of units of size to
•
- Adds symbol file information.
display or print.
{disassemble | da} [[start-address][end-
address] | function-name] - Displays a range of
• ptype [data-type | variable-name]
memory as instructions.
format - Specifies the display format as follows:
- Prints information about a specified data type.
•
a address
i instruction (ICODE)
u unsigned decimal
display [[/format] expression] - Adds an expression
• {symbol | symbol-file} [-g] [-readnow] pathname -
to the list that is automatically displayed when the process is
Opens a native code file and builds internal symbol tables.
c char
o octal
x hexadecimal
suspended.
•
d decimal
s nul terminated string
unload-symbol-file [-g] symbol-file-name
•
f float
t binary
enable display [num] - Enables automatic display items.
- Discards symbol data associated with a specified filename.
size - Specifies the unit size as folows:
•
•
env - Displays process environment information.
whatis expression - Displays the data type of a specified
expression.
b byte
h half word (16 bits)
• fn value [start-addr [end-addr]] [type]
w word (32 bits)
g giant (64 bits)
- Searches for a value (finds a number) in the virtual address
Managing Memory
pTAL and COBOL Considerations:
space of the current process.
• set heap-check attribute value - Displays settings
•
•
For pTAL programs use: procedure[subprocedure]
i {{native-address [count]} | function-name} -
for commands that debug memory problems.
Displays memory as instructions.
• For COBOL programs use one of the fol owing:
• vq [segid] - Displays information about the extended
•
Program-unit [program-unit]
output [/format] expressions - Displays the value of
segments al ocated by the current process. Specify segid to
a specified expression (does not save the result in value
change the current selectable segment.
[section.]paragraph
history).
paragraph [of section]
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