Tornado

7
Debugger
gdbEvalScalar exprlist
Evaluates a list of expressions exprlist and returns a list of single integer values
(in hexadecimal), one for each element of exprlist. 6 If an expression represents
a scalar value (such as int, long, or char), that value is returned. If an
expression represents a float or double, the fractional part is truncated. If an
expression represents an aggregate type, such as a structure or array, the
address of the indicated object is returned. Standard rules for Tcl argument
evaluation apply.
If Tcl debugging is enabled, the following message is printed for each
expression:
7
evaluate: expression
If an expression does not evaluate to an object that can be cast to pointer type,
an error message is printed, and gdbEvalScalar signals a Tcl error, which
unwinds the Tcl stack if not caught (see B.2.9 Tcl Error Handling, p.324 for
information about unwinding).
gdbFileAddrInfo fileName
Returns a Tcl list with four elements: the first source line number of fileName
that corresponds to generated object code, the last such line number, the lowest
object-code address from fileName in the target, and the highest object-code
address from fileName in the target. The argument fileName must be the source
file (.c, not .o) corresponding to code loaded in the target and in the debugger.
For example:
(gdb) tcl gdbFileAddrInfo vxColor.c
{239 1058 0x39e2d0 0x39fbfc}
gdbFileLineInfo fileName
Returns a Tcl list with as many elements as there are source lines of fileName
that correspond to generated object code. Each element of the list is itself a list
with three elements: the source-file line number, the beginning address of
object code for that line, and the ending address of object code for that line. The
argument fileName must be the source file (.c, not .o) of a file corresponding to
code loaded in the target and in the debugger.
6. A more restricted form of this command, called gdbEvalAddress, can only evaluate a single
expression (constructed by concatenating all its arguments). gdbEvalAddress is only
supported to provide compatibility with Tcl debugger extensions written for an older
debugger, VxGDB. Use the more general gdbEvalScalar in new Tcl extensions.
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