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llvm-project/lldb/scripts/lldb.swig

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/*
lldb.swig
This is the input file for SWIG, to create the appropriate C++ wrappers and
functions for various scripting languages, to enable them to call the
liblldb Script Bridge functions.
*/
/* Define our module docstring. */
%define DOCSTRING
"The lldb module contains the public APIs for Python binding.
Some of the important classes are describe here:
o SBTarget: Represents the target program running under the debugger.
o SBProcess: Represents the process associated with the target program.
o SBThread: Represents a thread of execution. SBProcess contains SBThread(s).
o SBFrame: Represents one of the stack frames associated with a thread. SBThread
contains SBFrame(s).
o SBSymbolContext: A container that stores various debugger related info.
o SBValue: Represents the value of a variable, a register, or an expression.
o SBModule: Represents an executable image and its associated object and symbol
files.
o SBSymbol: Represents the symbol associated with a stack frame.
o SBCompileUnit: Represents a compilation unit, or compiled source file.
o SBFunction: Represents a generic function, which can be inlined or not.
o SBBlock: Represents a lexical block. SBFunction contains SBBlock(s).
o SBLineEntry: Specifies an association with a contiguous range of instructions
and a source file location. SBCompileUnit contains SBLineEntry(s)"
%enddef
/* The name of the module to be created. */
%module(docstring=DOCSTRING) lldb
/* Typemap definitions, to allow SWIG to properly handle 'char**' data types. */
%typemap(in) char ** {
/* Check if is a list */
if (PyList_Check($input)) {
int size = PyList_Size($input);
int i = 0;
$1 = (char **) malloc((size+1) * sizeof(char*));
for (i = 0; i < size; i++) {
PyObject *o = PyList_GetItem($input,i);
if (PyString_Check(o))
$1[i] = PyString_AsString(o);
else {
PyErr_SetString(PyExc_TypeError,"list must contain strings");
free($1);
return NULL;
}
}
$1[i] = 0;
} else if ($input == Py_None) {
$1 = NULL;
} else {
PyErr_SetString(PyExc_TypeError,"not a list");
return NULL;
}
}
%typemap(freearg) char** {
free((char *) $1);
}
%typemap(out) char** {
int len;
int i;
len = 0;
while ($1[len]) len++;
$result = PyList_New(len);
for (i = 0; i < len; i++) {
PyList_SetItem($result, i, PyString_FromString($1[i]));
}
}
/* Typemap definitions to allow SWIG to properly handle char buffer. */
// typemap for a char buffer
// See also SBThread::GetStopDescription.
%typemap(in) (char *dst, size_t dst_len) {
if (!PyInt_Check($input)) {
PyErr_SetString(PyExc_ValueError, "Expecting an integer");
return NULL;
}
$2 = PyInt_AsLong($input);
if ($2 <= 0) {
PyErr_SetString(PyExc_ValueError, "Positive integer expected");
return NULL;
}
$1 = (char *) malloc($2);
}
// Return the char buffer. Discarding any previous return result
// See also SBThread::GetStopDescription.
%typemap(argout) (char *dst, size_t dst_len) {
Py_XDECREF($result); /* Blow away any previous result */
$result = PyString_FromStringAndSize(($1),result);
free($1);
}
// typemap for an outgoing buffer
// See also SBProcess::WriteMemory.
%typemap(in) (const void *buf, size_t size) {
if (!PyString_Check($input)) {
PyErr_SetString(PyExc_ValueError, "Expecting a string");
return NULL;
}
$1 = (void *) PyString_AsString($input);
$2 = PyString_Size($input);
}
// typemap for an incoming buffer
// See also SBProcess::ReadMemory.
%typemap(in) (void *buf, size_t size) {
if (!PyInt_Check($input)) {
PyErr_SetString(PyExc_ValueError, "Expecting an integer");
return NULL;
}
$2 = PyInt_AsLong($input);
if ($2 <= 0) {
PyErr_SetString(PyExc_ValueError, "Positive integer expected");
return NULL;
}
$1 = (void *) malloc($2);
}
// Return the buffer. Discarding any previous return result
// See also SBProcess::ReadMemory.
%typemap(argout) (void *buf, size_t size) {
Py_XDECREF($result); /* Blow away any previous result */
$result = PyString_FromStringAndSize(static_cast<const char*>($1),result);
free($1);
}
/* The liblldb header files to be included. */
%{
#include "lldb/lldb-public.h"
#include "lldb/API/SBAddress.h"
#include "lldb/API/SBBlock.h"
#include "lldb/API/SBBreakpoint.h"
#include "lldb/API/SBBreakpointLocation.h"
#include "lldb/API/SBBroadcaster.h"
#include "lldb/API/SBCommandInterpreter.h"
#include "lldb/API/SBCommandReturnObject.h"
#include "lldb/API/SBCommunication.h"
#include "lldb/API/SBCompileUnit.h"
#include "lldb/API/SBDebugger.h"
#include "lldb/API/SBError.h"
#include "lldb/API/SBEvent.h"
#include "lldb/API/SBFileSpec.h"
#include "lldb/API/SBFrame.h"
#include "lldb/API/SBFunction.h"
#include "lldb/API/SBHostOS.h"
#include "lldb/API/SBInputReader.h"
#include "lldb/API/SBInstruction.h"
#include "lldb/API/SBInstructionList.h"
#include "lldb/API/SBLineEntry.h"
#include "lldb/API/SBListener.h"
#include "lldb/API/SBModule.h"
#include "lldb/API/SBProcess.h"
#include "lldb/API/SBSourceManager.h"
#include "lldb/API/SBStream.h"
#include "lldb/API/SBStringList.h"
#include "lldb/API/SBSymbol.h"
#include "lldb/API/SBSymbolContext.h"
#include "lldb/API/SBSymbolContextList.h"
#include "lldb/API/SBTarget.h"
#include "lldb/API/SBThread.h"
#include "lldb/API/SBType.h"
#include "lldb/API/SBValue.h"
#include "lldb/API/SBValueList.h"
%}
/* Various liblldb typedefs that SWIG needs to know about. */
#define __extension__ /* Undefine GCC keyword to make Swig happy when processing glibc's stdint.h. */
%include <stdint.h>
%include "lldb/lldb-defines.h"
%include "lldb/lldb-enumerations.h"
%include "lldb/lldb-forward.h"
%include "lldb/lldb-forward-rtti.h"
%include "lldb/lldb-types.h"
%include "lldb/API/SBAddress.h"
%include "lldb/API/SBBlock.h"
%include "lldb/API/SBBreakpoint.h"
%include "lldb/API/SBBreakpointLocation.h"
%include "lldb/API/SBBroadcaster.h"
%include "lldb/API/SBCommandInterpreter.h"
%include "lldb/API/SBCommandReturnObject.h"
%include "lldb/API/SBCommunication.h"
%include "lldb/API/SBCompileUnit.h"
%include "lldb/API/SBDebugger.h"
%include "lldb/API/SBError.h"
%include "lldb/API/SBEvent.h"
%include "lldb/API/SBFileSpec.h"
%include "lldb/API/SBFrame.h"
%include "lldb/API/SBFunction.h"
%include "lldb/API/SBHostOS.h"
%include "lldb/API/SBInputReader.h"
%include "lldb/API/SBInstruction.h"
%include "lldb/API/SBInstructionList.h"
%include "lldb/API/SBLineEntry.h"
%include "lldb/API/SBListener.h"
%include "lldb/API/SBModule.h"
%include "lldb/API/SBProcess.h"
%include "lldb/API/SBSourceManager.h"
%include "lldb/API/SBStream.h"
%include "lldb/API/SBStringList.h"
%include "lldb/API/SBSymbol.h"
%include "lldb/API/SBSymbolContext.h"
%include "lldb/API/SBSymbolContextList.h"
%include "lldb/API/SBTarget.h"
%include "lldb/API/SBThread.h"
%include "lldb/API/SBType.h"
%include "lldb/API/SBValue.h"
%include "lldb/API/SBValueList.h"
%include "./Python/python-extensions.swig"
%wrapper %{
// This function is called by lldb_private::ScriptInterpreterPython::BreakpointCallbackFunction(...)
// and is used when a script command is attached to a breakpoint for execution.
SWIGEXPORT bool
LLDBSwigPythonBreakpointCallbackFunction
(
const char *python_function_name,
const char *session_dictionary_name,
const lldb::StackFrameSP& frame_sp,
const lldb::BreakpointLocationSP& bp_loc_sp
)
{
lldb::SBFrame sb_frame (frame_sp);
lldb::SBBreakpointLocation sb_bp_loc(bp_loc_sp);
bool stop_at_breakpoint = true;
PyObject *Frame_PyObj = SWIG_NewPointerObj((void *) &sb_frame, SWIGTYPE_p_lldb__SBFrame, 0);
PyObject *Bp_Loc_PyObj = SWIG_NewPointerObj ((void *) &sb_bp_loc, SWIGTYPE_p_lldb__SBBreakpointLocation, 0);
if (Frame_PyObj == NULL || Bp_Loc_PyObj == NULL)
return stop_at_breakpoint;
if (!python_function_name || !session_dictionary_name)
return stop_at_breakpoint;
PyObject *pmodule, *main_dict, *session_dict, *pfunc;
PyObject *pargs, *pvalue;
pmodule = PyImport_AddModule ("__main__");
if (pmodule != NULL)
{
main_dict = PyModule_GetDict (pmodule);
if (main_dict != NULL)
{
PyObject *key, *value;
Py_ssize_t pos = 0;
// Find the current session's dictionary in the main module's dictionary.
if (PyDict_Check (main_dict))
{
session_dict = NULL;
while (PyDict_Next (main_dict, &pos, &key, &value))
{
// We have stolen references to the key and value objects in the dictionary; we need to increment
// them now so that Python's garbage collector doesn't collect them out from under us.
Py_INCREF (key);
Py_INCREF (value);
if (strcmp (PyString_AsString (key), session_dictionary_name) == 0)
{
session_dict = value;
break;
}
}
}
if (!session_dict || !PyDict_Check (session_dict))
return stop_at_breakpoint;
// Find the function we need to call in the current session's dictionary.
pos = 0;
pfunc = NULL;
while (PyDict_Next (session_dict, &pos, &key, &value))
{
if (PyString_Check (key))
{
// We have stolen references to the key and value objects in the dictionary; we need to increment
// them now so that Python's garbage collector doesn't collect them out from under us.
Py_INCREF (key);
Py_INCREF (value);
if (strcmp (PyString_AsString (key), python_function_name) == 0)
{
pfunc = value;
break;
}
}
}
// Set up the arguments and call the function.
if (pfunc && PyCallable_Check (pfunc))
{
pargs = PyTuple_New (3);
if (pargs == NULL)
{
if (PyErr_Occurred())
PyErr_Clear();
return stop_at_breakpoint;
}
PyTuple_SetItem (pargs, 0, Frame_PyObj); // This "steals" a reference to Frame_PyObj
PyTuple_SetItem (pargs, 1, Bp_Loc_PyObj); // This "steals" a reference to Bp_Loc_PyObj
PyTuple_SetItem (pargs, 2, session_dict); // This "steals" a reference to session_dict
pvalue = PyObject_CallObject (pfunc, pargs);
Py_DECREF (pargs);
if (pvalue != NULL)
{
Py_DECREF (pvalue);
}
else if (PyErr_Occurred ())
{
PyErr_Clear();
}
Py_INCREF (session_dict);
}
else if (PyErr_Occurred())
{
PyErr_Clear();
}
}
else if (PyErr_Occurred())
{
PyErr_Clear();
}
}
else if (PyErr_Occurred ())
{
PyErr_Clear ();
}
return stop_at_breakpoint;
}
%}
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