#!/usr/bin/env python
import sys
import struct
import re
MAXSTRING=63
symtabfmt = "<Q%ds" % (MAXSTRING+1)
funcline = re.compile(r'([0-9a-f]+)\s+[lg]\s+.\s+\.text\s+([0-9a-f]+)\s+(.*)$')
bssline = re.compile(r'([0-9a-f]+)\s+[lg]\s+[a-zA-Z]\s+\.bss\s+([0-9a-f]+)\s+(.*)$')
dataline = re.compile(r'([0-9a-f]+)\s+[lg]\s+[a-zA-Z]\s+\.data\s+([0-9a-f]+)\s+(.*)$')
fileexp = re.compile(r'([^\s]+):\s+file format')
def read_obdump(inp):
funcs = {}
data = {}
bss ={}
fname = ''
for line in inp:
line = line.strip()
res = funcline.match(line)
if res:
funcs.setdefault(fname,[]).append((int(res.group(1),16),
res.group(3)))
continue
res = bssline.match(line)
if res:
start = int(res.group(1),16)
end = int(res.group(2),16)
if end:
bss.setdefault(fname,[]).append((start,res.group(3)))
res = dataline.match(line)
if res:
start = int(res.group(1),16)
end = int(res.group(2),16)
if end:
data.setdefault(fname,[]).append((start,res.group(3)))
res = fileexp.match(line)
if res:
fname = res.group(1)
continue
return {
'text' : funcs,
'bss' : bss,
'data' : data
}
startfile = re.compile(r'\.(text|bss|data)\s+(0x[0-9a-f]+)\s+0x[0-9a-f]+\s+(.*)$')
def generate(kmapf, obmapf, out):
obdump = read_obdump(obmapf)
def sorter(x,y):
return cmp(x[0],y[0])
for line in kmapf:
line = line.strip()
res = startfile.match(line)
if res and obdump[res.group(1)].has_key(res.group(3)):
offset = int(res.group(2),16)
fname = res.group(3)
symbols = obdump[res.group(1)][fname]
symbols.sort(sorter)
for addr,symbol in symbols:
value = fname + ':' + symbol
data = struct.pack(symtabfmt,addr+offset,value[:MAXSTRING])
out.write(data)
out.write(struct.pack(symtabfmt,0,''))
def main():
if len(sys.argv) != 4:
print "Usage: %s <kernel.map> <nm dump> <output.bin>" % sys.argv[0]
sys.exit(1)
kmapf = open(sys.argv[1],'r')
obmapf = open(sys.argv[2],'r')
out = open(sys.argv[3],'w')
generate(kmapf,obmapf,out)
kmapf.close()
obmapf.close()
out.close()
if __name__ == '__main__':
main()