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Migrate the in_range(symbol, section) and symbol_iter(module, section) utility functions 

from lldbutil.py to the lldb.py proper.  The in_range() function becomes a function in
the lldb module.  And the symbol_iter() function becomes a method within the SBModule
called symbol_in_section_iter().  Example:

        # Iterates the text section and prints each symbols within each sub-section.
        for subsec in text_sec:
            print INDENT + repr(subsec)
            for sym in exe_module.symbol_in_section_iter(subsec):
                print INDENT2 + repr(sym)
                print INDENT2 + 'symbol type: %s' % symbol_type_to_str(sym.GetType())

might produce this following output:

    [0x0000000100001780-0x0000000100001d5c) a.out.__TEXT.__text
        id = {0x00000004}, name = 'mask_access(MaskAction, unsigned int)', range = [0x00000001000017c0-0x0000000100001870)
        symbol type: code
        id = {0x00000008}, name = 'thread_func(void*)', range = [0x0000000100001870-0x00000001000019b0)
        symbol type: code
        id = {0x0000000c}, name = 'main', range = [0x00000001000019b0-0x0000000100001d5c)
        symbol type: code
        id = {0x00000023}, name = 'start', address = 0x0000000100001780
        symbol type: code
    [0x0000000100001d5c-0x0000000100001da4) a.out.__TEXT.__stubs
        id = {0x00000024}, name = '__stack_chk_fail', range = [0x0000000100001d5c-0x0000000100001d62)
        symbol type: trampoline
        id = {0x00000028}, name = 'exit', range = [0x0000000100001d62-0x0000000100001d68)
        symbol type: trampoline
        id = {0x00000029}, name = 'fflush', range = [0x0000000100001d68-0x0000000100001d6e)
        symbol type: trampoline
        id = {0x0000002a}, name = 'fgets', range = [0x0000000100001d6e-0x0000000100001d74)
        symbol type: trampoline
        id = {0x0000002b}, name = 'printf', range = [0x0000000100001d74-0x0000000100001d7a)
        symbol type: trampoline
        id = {0x0000002c}, name = 'pthread_create', range = [0x0000000100001d7a-0x0000000100001d80)
        symbol type: trampoline
        id = {0x0000002d}, name = 'pthread_join', range = [0x0000000100001d80-0x0000000100001d86)
        symbol type: trampoline
        id = {0x0000002e}, name = 'pthread_mutex_lock', range = [0x0000000100001d86-0x0000000100001d8c)
        symbol type: trampoline
        id = {0x0000002f}, name = 'pthread_mutex_unlock', range = [0x0000000100001d8c-0x0000000100001d92)
        symbol type: trampoline
        id = {0x00000030}, name = 'rand', range = [0x0000000100001d92-0x0000000100001d98)
        symbol type: trampoline
        id = {0x00000031}, name = 'strtoul', range = [0x0000000100001d98-0x0000000100001d9e)
        symbol type: trampoline
        id = {0x00000032}, name = 'usleep', range = [0x0000000100001d9e-0x0000000100001da4)
        symbol type: trampoline
    [0x0000000100001da4-0x0000000100001e2c) a.out.__TEXT.__stub_helper
    [0x0000000100001e2c-0x0000000100001f10) a.out.__TEXT.__cstring
    [0x0000000100001f10-0x0000000100001f68) a.out.__TEXT.__unwind_info
    [0x0000000100001f68-0x0000000100001ff8) a.out.__TEXT.__eh_frame

llvm-svn: 140830
This commit is contained in:
Johnny Chen 2011-09-30 00:42:49 +00:00
parent befa6f0caa
commit c44e20cec0
4 changed files with 99 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
lldb/scripts/Python/interface/SBModule.i
View File

@ -32,7 +32,63 @@ and rich comparion methods which allow the API program to use,
print 'This module is the same as that module'
to test module equality. A module also contains object file sections, namely
SBSection. SBModule supports section iteration through section_iter()."
SBSection. SBModule supports section iteration through section_iter(), for
example,
print 'Number of sections: %d' % module.GetNumSections()
for sec in module.section_iter():
print sec
And to iterate the symbols within a SBSection, use symbol_in_section_iter(),
# Iterates the text section and prints each symbols within each sub-section.
for subsec in text_sec:
print INDENT + repr(subsec)
for sym in exe_module.symbol_in_section_iter(subsec):
print INDENT2 + repr(sym)
print INDENT2 + 'symbol type: %s' % symbol_type_to_str(sym.GetType())
might produce this following output:
[0x0000000100001780-0x0000000100001d5c) a.out.__TEXT.__text
id = {0x00000004}, name = 'mask_access(MaskAction, unsigned int)', range = [0x00000001000017c0-0x0000000100001870)
symbol type: code
id = {0x00000008}, name = 'thread_func(void*)', range = [0x0000000100001870-0x00000001000019b0)
symbol type: code
id = {0x0000000c}, name = 'main', range = [0x00000001000019b0-0x0000000100001d5c)
symbol type: code
id = {0x00000023}, name = 'start', address = 0x0000000100001780
symbol type: code
[0x0000000100001d5c-0x0000000100001da4) a.out.__TEXT.__stubs
id = {0x00000024}, name = '__stack_chk_fail', range = [0x0000000100001d5c-0x0000000100001d62)
symbol type: trampoline
id = {0x00000028}, name = 'exit', range = [0x0000000100001d62-0x0000000100001d68)
symbol type: trampoline
id = {0x00000029}, name = 'fflush', range = [0x0000000100001d68-0x0000000100001d6e)
symbol type: trampoline
id = {0x0000002a}, name = 'fgets', range = [0x0000000100001d6e-0x0000000100001d74)
symbol type: trampoline
id = {0x0000002b}, name = 'printf', range = [0x0000000100001d74-0x0000000100001d7a)
symbol type: trampoline
id = {0x0000002c}, name = 'pthread_create', range = [0x0000000100001d7a-0x0000000100001d80)
symbol type: trampoline
id = {0x0000002d}, name = 'pthread_join', range = [0x0000000100001d80-0x0000000100001d86)
symbol type: trampoline
id = {0x0000002e}, name = 'pthread_mutex_lock', range = [0x0000000100001d86-0x0000000100001d8c)
symbol type: trampoline
id = {0x0000002f}, name = 'pthread_mutex_unlock', range = [0x0000000100001d8c-0x0000000100001d92)
symbol type: trampoline
id = {0x00000030}, name = 'rand', range = [0x0000000100001d92-0x0000000100001d98)
symbol type: trampoline
id = {0x00000031}, name = 'strtoul', range = [0x0000000100001d98-0x0000000100001d9e)
symbol type: trampoline
id = {0x00000032}, name = 'usleep', range = [0x0000000100001d9e-0x0000000100001da4)
symbol type: trampoline
[0x0000000100001da4-0x0000000100001e2c) a.out.__TEXT.__stub_helper
[0x0000000100001e2c-0x0000000100001f10) a.out.__TEXT.__cstring
[0x0000000100001f10-0x0000000100001f68) a.out.__TEXT.__unwind_info
[0x0000000100001f68-0x0000000100001ff8) a.out.__TEXT.__eh_frame
"
) SBModule;
class SBModule
{

45
lldb/scripts/Python/modify-python-lldb.py
View File

@ -59,8 +59,27 @@ EIGHT_SPACES = ' ' * 8
one_liner_docstring_pattern = re.compile('^(%s|%s)""".*"""$' % (TWO_SPACES, EIGHT_SPACES))
#
# lldb_iter() should appear before our first SB* class definition.
# lldb_helpers and lldb_iter() should appear before our first SB* class definition.
#
lldb_helpers = '''
def in_range(symbol, section):
symSA = symbol.GetStartAddress().GetFileAddress()
symEA = symbol.GetEndAddress().GetFileAddress()
secSA = section.GetFileAddress()
secEA = secSA + section.GetByteSize()
if symEA != LLDB_INVALID_ADDRESS:
if secSA <= symSA and symEA <= secEA:
return True
else:
return False
else:
if secSA <= symSA and symSA < secEA:
return True
else:
return False
'''
lldb_iter_def = '''
# ===================================
# Iterator for lldb container objects
@ -166,6 +185,16 @@ ne_def = " def __ne__(self, other): return not self.__eq__(other)"
# Delegate to self.IsValid() if it is defined for the current lldb object.
nonzero_def = " def __nonzero__(self): return self.IsValid()"
# A convenience iterator for SBSymbol!
symbol_in_section_iter_def = '''
def symbol_in_section_iter(self, section):
"""Given a module and its contained section, returns an iterator on the
symbols within the section."""
for sym in self:
if in_range(sym, section):
yield sym
'''
#
# This dictionary defines a mapping from classname to (getsize, getelem) tuple.
#
@ -193,7 +222,9 @@ d = { 'SBBreakpoint': ('GetNumLocations', 'GetLocationAtIndex'),
},
# SBModule has an additional section_iter(), see below.
'SBModule-extra': ('GetNumSections', 'GetSectionAtIndex')
'SBModule-section': ('GetNumSections', 'GetSectionAtIndex'),
# As well as symbol_in_section_iter().
'SBModule-symbol-in-section': symbol_in_section_iter_def
}
#
@ -305,8 +336,10 @@ for line in content.splitlines():
if state == NORMAL:
match = class_pattern.search(line)
# Inserts the lldb_iter() definition before the first class definition.
# Inserts lldb_helpers and the lldb_iter() definition before the first
# class definition.
if not lldb_iter_defined and match:
new_content.add_line(lldb_helpers)
new_content.add_line(lldb_iter_def)
lldb_iter_defined = True
@ -341,9 +374,11 @@ for line in content.splitlines():
new_content.add_line(eq_def % (cls, list_to_frag(e[cls])))
new_content.add_line(ne_def)
# SBModule has an extra SBSection iterator!
# SBModule has an extra SBSection iterator and symbol_in_section_iter()!
if cls == "SBModule":
new_content.add_line(section_iter % d[cls+'-extra'])
new_content.add_line(section_iter % d[cls+'-section'])
new_content.add_line(d[cls+'-symbol-in-section'])
# This special purpose iterator is for SBValue only!!!
if cls == "SBValue":
new_content.add_line(linked_list_iter_def)

28
lldb/test/lldbutil.py
View File

@ -44,34 +44,6 @@ def disassemble(target, function_or_symbol):
print >> buf, i
return buf.getvalue()
# ======================================================
# Utilities for iterating a module's section for symbols
# ======================================================
def in_range(symbol, section):
symSA = symbol.GetStartAddress().GetFileAddress()
symEA = symbol.GetEndAddress().GetFileAddress()
secSA = section.GetFileAddress()
secEA = secSA + section.GetByteSize()
if symEA != lldb.LLDB_INVALID_ADDRESS:
if secSA <= symSA and symEA <= secEA:
return True
else:
return False
else:
if secSA <= symSA and symSA < secEA:
return True
else:
return False
def symbol_iter(module, section):
"""Given a module and its contained section, returns an iterator on the
symbols within the section."""
for sym in module:
if in_range(sym, section):
yield sym
# ==========================================================
# Integer (byte size 1, 2, 4, and 8) to bytearray conversion
# ==========================================================

4
lldb/test/python_api/module_section/TestModuleAndSection.py
View File

@ -45,14 +45,14 @@ class ModuleAndSectionAPIsTestCase(TestBase):
print sec
print INDENT + "Number of subsections: %d" % sec.GetNumSubSections()
if sec.GetNumSubSections() == 0:
for sym in symbol_iter(exe_module, sec):
for sym in exe_module.symbol_in_section_iter(sec):
print INDENT + repr(sym)
print INDENT + "symbol type: %s" % symbol_type_to_str(sym.GetType())
else:
for subsec in sec:
print INDENT + repr(subsec)
# Now print the symbols belonging to the subsection....
for sym in symbol_iter(exe_module, subsec):
for sym in exe_module.symbol_in_section_iter(subsec):
print INDENT2 + repr(sym)
print INDENT2 + "symbol type: %s" % symbol_type_to_str(sym.GetType())