elf_mem_map: add declaration position in --map
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d1720cba51
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@ -10,7 +10,7 @@ EEPROM_OFFSET = 0x810000
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FILL_BYTE = b'\0'
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Entry = namedtuple('Entry', ['name', 'loc', 'size'])
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Entry = namedtuple('Entry', ['name', 'loc', 'size', 'declpos'])
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Member = namedtuple('Member', ['name', 'off', 'size'])
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@ -160,6 +160,8 @@ def get_elf_globals(path, expand_structs, struct_gaps=True):
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grefs = []
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for CU in dwarfinfo.iter_CUs():
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file_entries = dwarfinfo.line_program_for_CU(CU).header["file_entry"]
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for DIE in CU.iter_DIEs():
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# handle only variable types
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if DIE.tag != 'DW_TAG_variable':
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@ -196,6 +198,16 @@ def get_elf_globals(path, expand_structs, struct_gaps=True):
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continue
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byte_size = size[1]
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# location of main definition
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declpos = ''
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if 'DW_AT_decl_file' in DIE.attributes and \
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'DW_AT_decl_line' in DIE.attributes:
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line = DIE.attributes['DW_AT_decl_line'].value
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fname = DIE.attributes['DW_AT_decl_file'].value
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if fname and fname - 1 < len(file_entries):
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fname = file_entries[fname-1].name.decode('ascii')
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declpos = '{}:{}'.format(fname, line)
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# fetch array dimensions (if known)
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array_dim = get_array_dims(DIE)
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@ -208,17 +220,18 @@ def get_elf_globals(path, expand_structs, struct_gaps=True):
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else:
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for member in members:
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grefs.append(Entry(entry.name + '.' + member.name,
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entry.loc + member.off, member.size))
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entry.loc + member.off, member.size,
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entry.declpos))
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if byte_size == 1 and len(array_dim) > 1:
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# likely string, remove one dimension
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byte_size *= array_dim.pop()
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if len(array_dim) == 0 or (len(array_dim) == 1 and array_dim[0] == 1):
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# plain entry
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expand_members(Entry(name, loc, byte_size), members)
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expand_members(Entry(name, loc, byte_size, declpos), members)
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elif len(array_dim) == 1 and byte_size == 1:
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# likely string, avoid expansion
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grefs.append(Entry(name + '[]', loc, array_dim[0]))
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grefs.append(Entry(name + '[]', loc, array_dim[0], declpos))
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else:
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# expand array entries
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array_pos = loc
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@ -229,7 +242,7 @@ def get_elf_globals(path, expand_structs, struct_gaps=True):
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for d in range(len(array_dim)):
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sfx += '[{}]'.format(str(array_loc[d]).rjust(len(str(array_dim[d]-1)), '0'))
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expand_members(Entry(name + sfx, array_pos, byte_size), members)
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expand_members(Entry(name + sfx, array_pos, byte_size, declpos), members)
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# advance
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if array_inc(array_loc, array_dim):
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@ -316,9 +329,9 @@ def annotate_refs(grefs, addr, data, width, gaps=True, overlaps=True):
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def print_map(grefs):
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print('OFFSET\tSIZE\tNAME')
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print('OFFSET\tSIZE\tNAME\tDECLPOS')
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for entry in grefs:
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print('{:x}\t{}\t{}'.format(entry.loc, entry.size, entry.name))
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print('{:x}\t{}\t{}\t{}'.format(entry.loc, entry.size, entry.name, entry.declpos))
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def main():
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