119 lines
3.3 KiB
Python
119 lines
3.3 KiB
Python
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import gdb
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import re
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# GDB Pretty Printers for most isl objects
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class IslObjectPrinter:
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"""Print an isl object"""
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def __init__(self, val, type):
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self.val = val
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self.type = type
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def to_string(self):
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# Cast val to a void pointer to stop gdb using this pretty
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# printer for the pointer which would lead to an infinite loop.
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void_ptr = gdb.lookup_type("void").pointer()
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value = str(self.val.cast(void_ptr))
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printer = gdb.parse_and_eval(
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"isl_printer_to_str(isl_" + str(self.type) + "_get_ctx(" + value + "))"
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)
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printer = gdb.parse_and_eval(
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"isl_printer_print_"
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+ str(self.type)
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+ "("
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+ str(printer)
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+ ", "
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+ value
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+ ")"
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)
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string = gdb.parse_and_eval("(char*)isl_printer_get_str(" + str(printer) + ")")
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gdb.parse_and_eval("isl_printer_free(" + str(printer) + ")")
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return string
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def display_hint(self):
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return "string"
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class IslIntPrinter:
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"""Print an isl_int"""
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def __init__(self, val):
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self.val = val
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def to_string(self):
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# Cast val to a void pointer to stop gdb using this pretty
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# printer for the pointer which would lead to an infinite loop.
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void_ptr = gdb.lookup_type("void").pointer()
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value = str(self.val.cast(void_ptr))
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context = gdb.parse_and_eval("isl_ctx_alloc()")
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printer = gdb.parse_and_eval("isl_printer_to_str(" + str(context) + ")")
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printer = gdb.parse_and_eval(
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"isl_printer_print_isl_int(" + str(printer) + ", " + value + ")"
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)
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string = gdb.parse_and_eval("(char*)isl_printer_get_str(" + str(printer) + ")")
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gdb.parse_and_eval("isl_printer_free(" + str(printer) + ")")
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gdb.parse_and_eval("isl_ctx_free(" + str(context) + ")")
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return string
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def display_hint(self):
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return "string"
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class IslPrintCommand(gdb.Command):
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"""Print an isl value."""
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def __init__(self):
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super(IslPrintCommand, self).__init__("islprint", gdb.COMMAND_OBSCURE)
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def invoke(self, arg, from_tty):
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arg = gdb.parse_and_eval(arg)
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printer = str_lookup_function(arg)
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if printer == None:
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print("No isl printer for this type")
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return
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print(printer.to_string())
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IslPrintCommand()
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def str_lookup_function(val):
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if val.type.code != gdb.TYPE_CODE_PTR:
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if str(val.type) == "isl_int":
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return IslIntPrinter(val)
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else:
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return None
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lookup_tag = val.type.target()
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regex = re.compile("^isl_(.*)$")
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if lookup_tag == None:
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return None
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m = regex.match(str(lookup_tag))
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if m:
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# Those types of printers defined in isl.
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if m.group(1) in [
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"basic_set",
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"set",
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"union_set",
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"basic_map",
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"map",
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"union_map",
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"qpolynomial",
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"pw_qpolynomial",
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"pw_qpolynomial_fold",
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"union_pw_qpolynomial",
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"union_pw_qpolynomial_fold",
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]:
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return IslObjectPrinter(val, m.group(1))
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return None
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# Do not register the pretty printer.
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# gdb.current_objfile().pretty_printers.append(str_lookup_function)
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