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elf_mem_map: also dump gaps between known regions

This commit is contained in:
Yuri D'Elia 2021-06-02 17:15:21 +02:00 committed by DRracer
parent 4c6339ac46
commit c321ba4821
1 changed files with 13 additions and 2 deletions
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15
tools/elf_mem_map
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@ -104,7 +104,9 @@ def decode_dump(path):
return (buf_addr, buf_data) return (buf_addr, buf_data)
def annotate_refs(grefs, addr, data, width=45): def annotate_refs(grefs, addr, data, width=45, gaps=True):
last_pos = None
for name, loc, size in grefs: for name, loc, size in grefs:
if loc < addr: if loc < addr:
continue continue
@ -112,7 +114,8 @@ def annotate_refs(grefs, addr, data, width=45):
continue continue
pos = loc-addr pos = loc-addr
buf = data[pos:pos+size] end_pos = pos + size
buf = data[pos:end_pos]
buf_repr = '' buf_repr = ''
if len(buf) in [1, 2, 4]: if len(buf) in [1, 2, 4]:
@ -122,8 +125,16 @@ def annotate_refs(grefs, addr, data, width=45):
# attempt to decode as floats # attempt to decode as floats
buf_repr += ' F:' + '{:10.3f}'.format(unpack('f', buf)[0]) buf_repr += ' F:' + '{:10.3f}'.format(unpack('f', buf)[0])
if gaps and last_pos is not None and last_pos < pos:
# decode gaps
gap_size = pos - last_pos
gap_buf = data[last_pos:pos]
print('{:04x} {} {:4} R:{}'.format(last_pos, "*UNKNOWN*".ljust(width),
gap_size, gap_buf.hex()))
print('{:04x} {} {:4}{} R:{}'.format(loc, name.ljust(width), size, print('{:04x} {} {:4}{} R:{}'.format(loc, name.ljust(width), size,
buf_repr, buf.hex())) buf_repr, buf.hex()))
last_pos = end_pos
def print_map(grefs): def print_map(grefs):